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Articles 1 - 30 of 243
Full-Text Articles in Medicine and Health Sciences
The Oncolytic Adenovirus Delta-24-Rgd In Combination With Onc201 Induces A Potent Antitumor Response In Pediatric High-Grade And Diffuse Midline Glioma Models, Daniel De La Nava, Iker Ausejo-Mauleon, Virginia Laspidea, Marisol Gonzalez-Huarriz, Andrea Lacalle, Noelia Casares, Marta Zalacain, Lucía Marrodan, Marc García-Moure, Maria C Ochoa, Antonio Carlos Tallon-Cobos, Reyes Hernandez-Osuna, Javier Marco-Sanz, Laasya Dhandapani, Irati Hervás-Corpión, Oren J Becher, Javad Nazarian, Sabine Mueller, Timothy N Phoenix, Jasper Van Der Lugt, Mikel Hernaez, Elizabeth Guruceaga, Carl Koschmann, Sriram Venneti, Joshua E Allen, Matthew D Dun, Juan Fueyo, Candelaria Gomez-Manzano, Jaime Gallego Perez-Larraya, Ana Patiño-García, Sara Labiano, Marta M Alonso
The Oncolytic Adenovirus Delta-24-Rgd In Combination With Onc201 Induces A Potent Antitumor Response In Pediatric High-Grade And Diffuse Midline Glioma Models, Daniel De La Nava, Iker Ausejo-Mauleon, Virginia Laspidea, Marisol Gonzalez-Huarriz, Andrea Lacalle, Noelia Casares, Marta Zalacain, Lucía Marrodan, Marc García-Moure, Maria C Ochoa, Antonio Carlos Tallon-Cobos, Reyes Hernandez-Osuna, Javier Marco-Sanz, Laasya Dhandapani, Irati Hervás-Corpión, Oren J Becher, Javad Nazarian, Sabine Mueller, Timothy N Phoenix, Jasper Van Der Lugt, Mikel Hernaez, Elizabeth Guruceaga, Carl Koschmann, Sriram Venneti, Joshua E Allen, Matthew D Dun, Juan Fueyo, Candelaria Gomez-Manzano, Jaime Gallego Perez-Larraya, Ana Patiño-García, Sara Labiano, Marta M Alonso
Student and Faculty Publications
BACKGROUND: Pediatric high-grade gliomas (pHGGs), including diffuse midline gliomas (DMGs), are aggressive pediatric tumors with one of the poorest prognoses. Delta-24-RGD and ONC201 have shown promising efficacy as single agents for these tumors. However, the combination of both agents has not been evaluated.
METHODS: The production of functional viruses was assessed by immunoblotting and replication assays. The antitumor effect was evaluated in a panel of human and murine pHGG and DMG cell lines. RNAseq, the seahorse stress test, mitochondrial DNA content, and γH2A.X immunofluorescence were used to perform mechanistic studies. Mouse models of both diseases were used to assess the …
Exploring The Pdz, Duf, And Lim Domains Of Pdlim5 In Dendrite Branching, Yogesh Srivastava, Maxsam Donta, Lydia L Mireles, Adriana Paulucci-Holthauzen, Leilei Shi, Mark T Bedford, M Neal Waxham, Pierre D Mccrea
Exploring The Pdz, Duf, And Lim Domains Of Pdlim5 In Dendrite Branching, Yogesh Srivastava, Maxsam Donta, Lydia L Mireles, Adriana Paulucci-Holthauzen, Leilei Shi, Mark T Bedford, M Neal Waxham, Pierre D Mccrea
Student and Faculty Publications
The branched architecture of neuronal dendrites is a key factor in how neurons form ordered networks and discoveries continue to be made identifying proteins and protein-protein interactions that direct or execute the branching and extension of dendrites. Our prior work showed that the molecular scaffold Pdlim5 and delta-catenin, in conjunction, are two proteins that help regulate the branching and elongation of dendrites in cultured hippocampal neurons and do so through a phosphorylation-dependent mechanism triggered by upstream glutamate signaling. In this report we have focused on Pdlim5's multiple scaffolding domains and how each contributes to dendrite branching. The three identified regions …
Modulation Of The Blood-Brain Barrier By Sigma-1r Activation, Eugen Brailoiu, Jeffrey L Barr, Hailey N Wittorf, Saadet Inan, Ellen M Unterwald, Gabriela Cristina Brailoiu
Modulation Of The Blood-Brain Barrier By Sigma-1r Activation, Eugen Brailoiu, Jeffrey L Barr, Hailey N Wittorf, Saadet Inan, Ellen M Unterwald, Gabriela Cristina Brailoiu
Student and Faculty Publications
Sigma non-opioid intracellular receptor 1 (Sigma-1R) is an intracellular chaperone protein residing on the endoplasmic reticulum at the mitochondrial-associated membrane (MAM) region. Sigma-1R is abundant in the brain and is involved in several physiological processes as well as in various disease states. The role of Sigma-1R at the blood-brain barrier (BBB) is incompletely characterized. In this study, the effect of Sigma-1R activation was investigated in vitro on rat brain microvascular endothelial cells (RBMVEC), an important component of the blood-brain barrier (BBB), and in vivo on BBB permeability in rats. The Sigma-1R agonist PRE-084 produced a dose-dependent increase in mitochondrial calcium, …
Dlk-Mapk Signaling Coupled With Dna Damage Promotes Intrinsic Neurotoxicity Associated With Non-Mutated Tau, Sanming Li, Ethan R Roy, Yanyu Wang, Trent Watkins, Wei Cao
Dlk-Mapk Signaling Coupled With Dna Damage Promotes Intrinsic Neurotoxicity Associated With Non-Mutated Tau, Sanming Li, Ethan R Roy, Yanyu Wang, Trent Watkins, Wei Cao
Student and Faculty Publications
Alzheimer's disease (AD) is the most prevalent form of neurodegeneration. Despite the well-established link between tau aggregation and clinical progression, the major pathways driven by this protein to intrinsically damage neurons are incompletely understood. To model AD-relevant neurodegeneration driven by tau, we overexpressed non-mutated human tau in primary mouse neurons and observed substantial axonal degeneration and cell death, a process accompanied by activated caspase 3. Mechanistically, we detected deformation of the nuclear envelope and increased DNA damage response in tau-expressing neurons. Gene profiling analysis further revealed significant alterations in the mitogen-activated protein kinase (MAPK) pathway; moreover, inhibitors of dual leucine …
Head-To-Head Comparison Of Relevant Cell Sources Of Small Extracellular Vesicles For Cardiac Repair: Superiority Of Embryonic Stem Cells, Hernán González-King, Patricia G Rodrigues, Tamsin Albery, Benyapa Tangruksa, Ramya Gurrapu, Andreia M Silva, Gentian Musa, Dominika Kardasz, Kai Liu, Bengt Kull, Karin Åvall, Katarina Rydén-Markinhuhta, Tania Incitti, Nitin Sharma, Cecilia Graneli, Hadi Valadi, Kasparas Petkevicius, Miguel Carracedo, Sandra Tejedor, Alena Ivanova, Sepideh Heydarkhan-Hagvall, Phillipe Menasché, Jane Synnergren, Niek Dekker, Qing-Dong Wang, Karin Jennbacken
Head-To-Head Comparison Of Relevant Cell Sources Of Small Extracellular Vesicles For Cardiac Repair: Superiority Of Embryonic Stem Cells, Hernán González-King, Patricia G Rodrigues, Tamsin Albery, Benyapa Tangruksa, Ramya Gurrapu, Andreia M Silva, Gentian Musa, Dominika Kardasz, Kai Liu, Bengt Kull, Karin Åvall, Katarina Rydén-Markinhuhta, Tania Incitti, Nitin Sharma, Cecilia Graneli, Hadi Valadi, Kasparas Petkevicius, Miguel Carracedo, Sandra Tejedor, Alena Ivanova, Sepideh Heydarkhan-Hagvall, Phillipe Menasché, Jane Synnergren, Niek Dekker, Qing-Dong Wang, Karin Jennbacken
Faculty and Staff Publications
Small extracellular vesicles (sEV) derived from various cell sources have been demonstrated to enhance cardiac function in preclinical models of myocardial infarction (MI). The aim of this study was to compare different sources of sEV for cardiac repair and determine the most effective one, which nowadays remains limited. We comprehensively assessed the efficacy of sEV obtained from human primary bone marrow mesenchymal stromal cells (BM-MSC), human immortalized MSC (hTERT-MSC), human embryonic stem cells (ESC), ESC-derived cardiac progenitor cells (CPC), human ESC-derived cardiomyocytes (CM), and human primary ventricular cardiac fibroblasts (VCF), in in vitro models of cardiac repair. ESC-derived sEV (ESC-sEV) …
Crosstalk Between Diacylglycerol Kinase And Protein Kinase A In The Regulation Of Airway Smooth Muscle Cell Proliferation, Miguel Angel Hernandez-Lara, Santosh Kumar Yadav, Stanley Conaway, Sushrut D. Shah, Raymond B. Penn, Phd, Deepak A. Deshpande, Phd
Crosstalk Between Diacylglycerol Kinase And Protein Kinase A In The Regulation Of Airway Smooth Muscle Cell Proliferation, Miguel Angel Hernandez-Lara, Santosh Kumar Yadav, Stanley Conaway, Sushrut D. Shah, Raymond B. Penn, Phd, Deepak A. Deshpande, Phd
Center for Translational Medicine Faculty Papers
Background: Diacylglycerol kinase (DGK) regulates intracellular signaling and functions by converting diacylglycerol (DAG) into phosphatidic acid. We previously demonstrated that DGK inhibition attenuates airway smooth muscle (ASM) cell proliferation, however, the mechanisms mediating this effect are not well established. Given the capacity of protein kinase A (PKA) to effect inhibition of ASM cells growth in response to mitogens, we employed multiple molecular and pharmacological approaches to examine the putative role of PKA in the inhibition of mitogen-induced ASM cell proliferation by the small molecular DGK inhibitor I (DGK I).
Methods: We assayed cell proliferation using CyQUANT™ NF assay, protein expression …
Reduced Spag17 Expression In Systemic Sclerosis Triggers Myofibroblast Transition And Drives Fibrosis, Paulene Sapao, Elisha D O Roberson, Bo Shi, Shervin Assassi, Brian Skaug, Fred Lee, Alexandra Naba, Bethany E Perez White, Carlos Córdova-Fletes, Pei-Suen Tsou, Amr H Sawalha, Johann E Gudjonsson, Feiyang Ma, Priyanka Verma, Dibyendu Bhattacharyya, Mary Carns, Jerome F Strauss, Delphine Sicard, Daniel J Tschumperlin, Melissa I Champer, Paul J Campagnola, Maria E Teves, John Varga
Reduced Spag17 Expression In Systemic Sclerosis Triggers Myofibroblast Transition And Drives Fibrosis, Paulene Sapao, Elisha D O Roberson, Bo Shi, Shervin Assassi, Brian Skaug, Fred Lee, Alexandra Naba, Bethany E Perez White, Carlos Córdova-Fletes, Pei-Suen Tsou, Amr H Sawalha, Johann E Gudjonsson, Feiyang Ma, Priyanka Verma, Dibyendu Bhattacharyya, Mary Carns, Jerome F Strauss, Delphine Sicard, Daniel J Tschumperlin, Melissa I Champer, Paul J Campagnola, Maria E Teves, John Varga
Faculty and Staff Publications
Systemic sclerosis (SSc) is a clinically heterogeneous fibrotic disease with no effective treatment. Myofibroblasts are responsible for unresolving synchronous skin and internal organ fibrosis in SSc, but the drivers of sustained myofibroblast activation remain poorly understood. Using unbiased transcriptome analysis of skin biopsies, we identified the downregulation of SPAG17 in multiple independent cohorts of patients with SSc, and by orthogonal approaches, we observed a significant negative correlation between SPAG17 and fibrotic gene expression. Fibroblasts and endothelial cells explanted from SSc skin biopsies showed reduced chromatin accessibility at the SPAG17 locus. Remarkably, mice lacking Spag17 showed spontaneous skin fibrosis with increased …
G-Rich Motifs Within Phosphorothioate-Based Antisense Oligonucleotides (Asos) Drive Activation Of Fxn Expression Through Indirect Effects, Feng Wang, Ezequiel Calvo-Roitberg, Julia M Rembetsy-Brown, Minggang Fang, Jacquelyn Sousa, Zachary J Kartje, Pranathi Meda Krishnamurthy, Jonathan Lee, Michael R Green, Athma A Pai, Jonathan K Watts
G-Rich Motifs Within Phosphorothioate-Based Antisense Oligonucleotides (Asos) Drive Activation Of Fxn Expression Through Indirect Effects, Feng Wang, Ezequiel Calvo-Roitberg, Julia M Rembetsy-Brown, Minggang Fang, Jacquelyn Sousa, Zachary J Kartje, Pranathi Meda Krishnamurthy, Jonathan Lee, Michael R Green, Athma A Pai, Jonathan K Watts
Student and Faculty Publications
Friedreich's ataxia is an incurable disease caused by frataxin (FXN) protein deficiency, which is mostly induced by GAA repeat expansion in intron 1 of the FXN gene. Here, we identified antisense oligonucleotides (ASOs), complementary to two regions within the first intron of FXN pre-mRNA, which could increase FXN mRNA by ∼2-fold in patient fibroblasts. The increase in FXN mRNA was confirmed by the identification of multiple overlapping FXN-activating ASOs at each region, two independent RNA quantification assays, and normalization by multiple housekeeping genes. Experiments on cells with the ASO-binding sites deleted indicate that the ASO-induced FXN activation was driven by …
Intermediary Role Of Lung Alveolar Type 1 Cells In Epithelial Repair Upon Sendai Virus Infection, Belinda J Hernandez, Margo P Cain, Anne M Lynch, Jose R Flores, Michael J Tuvim, Burton F Dickey, Jichao Chen
Intermediary Role Of Lung Alveolar Type 1 Cells In Epithelial Repair Upon Sendai Virus Infection, Belinda J Hernandez, Margo P Cain, Anne M Lynch, Jose R Flores, Michael J Tuvim, Burton F Dickey, Jichao Chen
Student and Faculty Publications
The lung epithelium forms the first barrier against respiratory pathogens and noxious chemicals; however, little is known about how more than 90% of this barrier, made of AT1 (alveolar type 1) cells, responds to injury. Using the Sendai virus to model natural infection in mice, we find evidence that AT1 cells have an intermediary role by persisting in areas depleted of AT2 cells, upregulating IFN responsive genes, and receding from invading airway cells. Sendai virus infection mobilizes airway cells to form alveolar SOX2+ (Sry-box 2+) clusters without differentiating into AT1 or AT2 cells. Large AT2 cell-depleted areas remain covered by …
Preventing Cholesterol-Induced Perk (Protein Kinase Rna-Like Endoplasmic Reticulum Kinase) Signaling In Smooth Muscle Cells Blocks Atherosclerotic Plaque Formation, Abhijnan Chattopadhyay, Pujun Guan, Suravi Majumder, Kaveeta Kaw, Zhen Zhou, Chen Zhang, Siddharth K Prakash, Anita Kaw, L Maximillian Buja, Callie S Kwartler, Dianna M Milewicz
Preventing Cholesterol-Induced Perk (Protein Kinase Rna-Like Endoplasmic Reticulum Kinase) Signaling In Smooth Muscle Cells Blocks Atherosclerotic Plaque Formation, Abhijnan Chattopadhyay, Pujun Guan, Suravi Majumder, Kaveeta Kaw, Zhen Zhou, Chen Zhang, Siddharth K Prakash, Anita Kaw, L Maximillian Buja, Callie S Kwartler, Dianna M Milewicz
Faculty and Staff Publications
BACKGROUND: Vascular smooth muscle cells (SMCs) undergo complex phenotypic modulation with atherosclerotic plaque formation in hyperlipidemic mice, which is characterized by de-differentiation and heterogeneous increases in the expression of macrophage, fibroblast, osteogenic, and stem cell markers. An increase of cellular cholesterol in SMCs triggers similar phenotypic changes in vitro with exposure to free cholesterol due to cholesterol entering the endoplasmic reticulum, triggering endoplasmic reticulum stress and activating Perk (protein kinase RNA-like endoplasmic reticulum kinase) signaling.
METHODS: We generated an SMC-specific
RESULTS: SMC-specific deletion of Perk reduces atherosclerotic plaque formation in male hyperlipidemic mice by 80%. Single-cell transcriptomic data identify 2 …
Hematopoietic-Mesenchymal Signals Regulate The Properties Of Mesenchymal Stem Cells, Sanshiro Kanazawa, Hiroyuki Okada, Dan Riu, Yo Mabuchi, Chihiro Akazawa, Junichi Iwata, Kazuto Hoshi, Atsuhiko Hikita
Hematopoietic-Mesenchymal Signals Regulate The Properties Of Mesenchymal Stem Cells, Sanshiro Kanazawa, Hiroyuki Okada, Dan Riu, Yo Mabuchi, Chihiro Akazawa, Junichi Iwata, Kazuto Hoshi, Atsuhiko Hikita
Student and Faculty Publications
It is well known that the properties of hematopoietic stem/progenitor cells (HSCs), such as their self-renewal ability and multipotency, are maintained through interactions with mesenchymal stem/stromal cells (MSCs). MSCs are rare cells that are present in the bone marrow and are useful for clinical applications due to their functional ability. To obtain the necessary number of cells, MSCs must be cultured to expand, but this causes a remarkable decrease in stem cell properties, such as multipotency and proliferation ability. In this study, we show that the c-Mpl signal, which is related to the maintenance of hematopoietic stem cells, has an …
The Immunoregulatory Landscape Of Human Tuberculosis Granulomas., Erin F Mccaffrey, Michele Donato, Leeat Keren, Zhenghao Chen, Alea Delmastro, Megan B Fitzpatrick, Sanjana Gupta, Noah F Greenwald, Alex Baranski, William Graf, Rashmi Kumar, Marc Bosse, Christine Camacho Fullaway, Pratista K Ramdial, Erna Forgó, Vladimir Jojic, David Van Valen, Smriti Mehra, Shabaana A Khader, Sean C Bendall, Matt Van De Rijn, Daniel Kalman, Deepak Kaushal, Robert L Hunter, Niaz Banaei, Adrie J C Steyn, Purvesh Khatri, Michael Angelo
The Immunoregulatory Landscape Of Human Tuberculosis Granulomas., Erin F Mccaffrey, Michele Donato, Leeat Keren, Zhenghao Chen, Alea Delmastro, Megan B Fitzpatrick, Sanjana Gupta, Noah F Greenwald, Alex Baranski, William Graf, Rashmi Kumar, Marc Bosse, Christine Camacho Fullaway, Pratista K Ramdial, Erna Forgó, Vladimir Jojic, David Van Valen, Smriti Mehra, Shabaana A Khader, Sean C Bendall, Matt Van De Rijn, Daniel Kalman, Deepak Kaushal, Robert L Hunter, Niaz Banaei, Adrie J C Steyn, Purvesh Khatri, Michael Angelo
Student and Faculty Publications
Tuberculosis (TB) in humans is characterized by formation of immune-rich granulomas in infected tissues, the architecture and composition of which are thought to affect disease outcome. However, our understanding of the spatial relationships that control human granulomas is limited. Here, we used multiplexed ion beam imaging by time of flight (MIBI-TOF) to image 37 proteins in tissues from patients with active TB. We constructed a comprehensive atlas that maps 19 cell subsets across 8 spatial microenvironments. This atlas shows an IFN-γ-depleted microenvironment enriched for TGF-β, regulatory T cells and IDO1
Single-Cell Multi-Omics Reveals Dyssynchrony Of The Innate And Adaptive Immune System In Progressive Covid-19., Avraham Unterman, Tomokazu S Sumida, Nima Nouri, Xiting Yan, Amy Y Zhao, Victor Gasque, Jonas C Schupp, Hiromitsu Asashima, Yunqing Liu, Carlos Cosme, Wenxuan Deng, Ming Chen, Micha Sam Brickman Raredon, Kenneth B Hoehn, Guilin Wang, Zuoheng Wang, Giuseppe Deiuliis, Neal G Ravindra, Ningshan Li, Christopher Castaldi, Patrick Wong, John Fournier, Santos Bermejo, Lokesh Sharma, Arnau Casanovas-Massana, Chantal B F Vogels, Anne L Wyllie, Nathan D Grubaugh, Anthony Melillo, Hailong Meng, Yan Stein, Maksym Minasyan, Subhasis Mohanty, William E Ruff, Inessa Cohen, Khadir Raddassi, Laura E Niklason, Albert I Ko, Ruth R Montgomery, Shelli F Farhadian, Akiko Iwasaki, Albert C Shaw, David Van Dijk, Hongyu Zhao, Steven H Kleinstein, David A Hafler, Naftali Kaminski, Charles S Dela Cruz
Single-Cell Multi-Omics Reveals Dyssynchrony Of The Innate And Adaptive Immune System In Progressive Covid-19., Avraham Unterman, Tomokazu S Sumida, Nima Nouri, Xiting Yan, Amy Y Zhao, Victor Gasque, Jonas C Schupp, Hiromitsu Asashima, Yunqing Liu, Carlos Cosme, Wenxuan Deng, Ming Chen, Micha Sam Brickman Raredon, Kenneth B Hoehn, Guilin Wang, Zuoheng Wang, Giuseppe Deiuliis, Neal G Ravindra, Ningshan Li, Christopher Castaldi, Patrick Wong, John Fournier, Santos Bermejo, Lokesh Sharma, Arnau Casanovas-Massana, Chantal B F Vogels, Anne L Wyllie, Nathan D Grubaugh, Anthony Melillo, Hailong Meng, Yan Stein, Maksym Minasyan, Subhasis Mohanty, William E Ruff, Inessa Cohen, Khadir Raddassi, Laura E Niklason, Albert I Ko, Ruth R Montgomery, Shelli F Farhadian, Akiko Iwasaki, Albert C Shaw, David Van Dijk, Hongyu Zhao, Steven H Kleinstein, David A Hafler, Naftali Kaminski, Charles S Dela Cruz
Faculty Research 2022
Dysregulated immune responses against the SARS-CoV-2 virus are instrumental in severe COVID-19. However, the immune signatures associated with immunopathology are poorly understood. Here we use multi-omics single-cell analysis to probe the dynamic immune responses in hospitalized patients with stable or progressive course of COVID-19, explore V(D)J repertoires, and assess the cellular effects of tocilizumab. Coordinated profiling of gene expression and cell lineage protein markers shows that S100A
Common Genetic Variants Contribute To Risk Of Transposition Of The Great Arteries., Doris Škorić-Milosavljević, Rafik Tadros, Fernanda M Bosada, Federico Tessadori, Jan Hendrik Van Weerd, Odilia I Woudstra, Fleur V Y Tjong, Najim Lahrouchi, Fanny Bajolle, Heather J Cordell, A J Agopian, Gillian M Blue, Daniela Q C M Barge-Schaapveld, Marc Gewillig, Christoph Preuss, Elisabeth M Lodder, Phil Barnett, Aho Ilgun, Leander Beekman, Karel Van Duijvenboden, Regina Bokenkamp, Martina Müller-Nurasyid, Hubert W Vliegen, Thelma C Konings, Joost P Van Melle, Arie P J Van Dijk, Roland R J Van Kimmenade, Jolien W Roos-Hesselink, Gertjan T Sieswerda, Folkert Meijboom, Hashim Abdul-Khaliq, Felix Berger, Sven Dittrich, Marc-Phillip Hitz, Julia Moosmann, Frank-Thomas Riede, Stephan Schubert, Pilar Galan, Mark Lathrop, Hans M Munter, Ammar Al-Chalabi, Christopher E Shaw, Pamela J Shaw, Karen E Morrison, Jan H Veldink, Leonard H Van Den Berg, Sylvia Evans, Marcelo A Nobrega, Ivy Aneas, Milena Radivojkov-Blagojević, Thomas Meitinger, Erwin Oechslin, Tapas Mondal, Lynn Bergin, John F Smythe, Luis Altamirano-Diaz, Jane Lougheed, Berto J Bouma, Marie-A Chaix, Jennie Kline, Anne S Bassett, Gregor Andelfinger, Roel L F Van Der Palen, Patrice Bouvagnet, Sally-Ann B Clur, Jeroen Breckpot, Wilhelmina S Kerstjens-Frederikse, David S Winlaw, Ulrike M M Bauer, Seema Mital, Elizabeth Goldmuntz, Bernard Keavney, Damien Bonnet, Barbara J Mulder, Michael W T Tanck, Jeroen Bakkers, Vincent M Christoffels, Cornelis J Boogerd, Alex V Postma, Connie R Bezzina
Common Genetic Variants Contribute To Risk Of Transposition Of The Great Arteries., Doris Škorić-Milosavljević, Rafik Tadros, Fernanda M Bosada, Federico Tessadori, Jan Hendrik Van Weerd, Odilia I Woudstra, Fleur V Y Tjong, Najim Lahrouchi, Fanny Bajolle, Heather J Cordell, A J Agopian, Gillian M Blue, Daniela Q C M Barge-Schaapveld, Marc Gewillig, Christoph Preuss, Elisabeth M Lodder, Phil Barnett, Aho Ilgun, Leander Beekman, Karel Van Duijvenboden, Regina Bokenkamp, Martina Müller-Nurasyid, Hubert W Vliegen, Thelma C Konings, Joost P Van Melle, Arie P J Van Dijk, Roland R J Van Kimmenade, Jolien W Roos-Hesselink, Gertjan T Sieswerda, Folkert Meijboom, Hashim Abdul-Khaliq, Felix Berger, Sven Dittrich, Marc-Phillip Hitz, Julia Moosmann, Frank-Thomas Riede, Stephan Schubert, Pilar Galan, Mark Lathrop, Hans M Munter, Ammar Al-Chalabi, Christopher E Shaw, Pamela J Shaw, Karen E Morrison, Jan H Veldink, Leonard H Van Den Berg, Sylvia Evans, Marcelo A Nobrega, Ivy Aneas, Milena Radivojkov-Blagojević, Thomas Meitinger, Erwin Oechslin, Tapas Mondal, Lynn Bergin, John F Smythe, Luis Altamirano-Diaz, Jane Lougheed, Berto J Bouma, Marie-A Chaix, Jennie Kline, Anne S Bassett, Gregor Andelfinger, Roel L F Van Der Palen, Patrice Bouvagnet, Sally-Ann B Clur, Jeroen Breckpot, Wilhelmina S Kerstjens-Frederikse, David S Winlaw, Ulrike M M Bauer, Seema Mital, Elizabeth Goldmuntz, Bernard Keavney, Damien Bonnet, Barbara J Mulder, Michael W T Tanck, Jeroen Bakkers, Vincent M Christoffels, Cornelis J Boogerd, Alex V Postma, Connie R Bezzina
Faculty Research 2022
RATIONALE: Dextro-transposition of the great arteries (D-TGA) is a severe congenital heart defect which affects approximately 1 in 4,000 live births. While there are several reports of D-TGA patients with rare variants in individual genes, the majority of D-TGA cases remain genetically elusive. Familial recurrence patterns and the observation that most cases with D-TGA are sporadic suggest a polygenic inheritance for the disorder, yet this remains unexplored.
OBJECTIVE: We sought to study the role of common single nucleotide polymorphisms (SNPs) in risk for D-TGA.
METHODS AND RESULTS: We conducted a genome-wide association study in an international set of 1,237 patients …
Evaluation Of Bone Formation On Orthopedic Implant Surfaces Using An Ex-Vivo Bone Bioreactor System, Rupak Dua, Hugh Jones, Philip C Noble
Evaluation Of Bone Formation On Orthopedic Implant Surfaces Using An Ex-Vivo Bone Bioreactor System, Rupak Dua, Hugh Jones, Philip C Noble
Student and Faculty Publications
Recent advances in materials and manufacturing processes have allowed the fabrication of intricate implant surfaces to facilitate bony attachment. However, refinement and evaluation of these new design strategies are hindered by the cost and complications of animal studies, particularly during early iterations in the development process. To address this problem, we have previously constructed and validated an ex-vivo bone bioreactor culture system that can maintain the viability of bone samples for an extended period ex-vivo. In this study, we investigated the mineralization of a titanium wire mesh scaffold under both static and dynamic culturing using our ex vivo bioreactor system. …
Comparison Of Transcriptional Profiles Of Treponema Pallidum During Experimental Infection Of Rabbits And In Vitro Culture: Highly Similar, Yet Different, Bridget D De Lay, Todd A Cameron, Nicholas R De Lay, Steven J Norris, Diane G Edmondson
Comparison Of Transcriptional Profiles Of Treponema Pallidum During Experimental Infection Of Rabbits And In Vitro Culture: Highly Similar, Yet Different, Bridget D De Lay, Todd A Cameron, Nicholas R De Lay, Steven J Norris, Diane G Edmondson
Student and Faculty Publications
Treponema pallidum ssp. pallidum, the causative agent of syphilis, can now be cultured continuously in vitro utilizing a tissue culture system, and the multiplication rates are similar to those obtained in experimental infection of rabbits. In this study, the RNA transcript profiles of the T. pallidum Nichols during in vitro culture and rabbit infection were compared to examine whether gene expression patterns differed in these two environments. To this end, RNA preparations were converted to cDNA and subjected to RNA-seq using high throughput Illumina sequencing; reverse transcriptase quantitative PCR was also performed on selected genes for validation of results. The …
Self And Microbiota-Derived Epitopes Induce Cd4⁺ T Cell Anergy And Conversion Into Cd4⁺Foxp3⁺ Regulatory Cells, Michal P. Kuczma, Edyta A. Szurek, Anna Cebula, Vu L. Ngo, Maciej Pietrzak, Piotr Kraj, Timothy L. Denning, Leszek Ignatowicz
Self And Microbiota-Derived Epitopes Induce Cd4⁺ T Cell Anergy And Conversion Into Cd4⁺Foxp3⁺ Regulatory Cells, Michal P. Kuczma, Edyta A. Szurek, Anna Cebula, Vu L. Ngo, Maciej Pietrzak, Piotr Kraj, Timothy L. Denning, Leszek Ignatowicz
Biological Sciences Faculty Publications
The physiological role of T cell anergy induction as a key mechanism supporting self-tolerance remains undefined, and natural antigens that induce anergy are largely unknown. In this report, we used TCR sequencing to show that the recruitment of CD4+CD44+Foxp3−CD73+FR4+ anergic (Tan) cells expands the CD4+Foxp3+ (Tregs) repertoire. Next, we report that blockade in peripherally-induced Tregs (pTregs) formation due to mutation in CNS1 region of Foxp3 or chronic exposure to a selecting self-peptide result in an accumulation of Tan cells. Finally, we show that microbial antigens from Akkermansia muciniphila …
Sustained Increases In Immune Transcripts And Immune Cell Trafficking During The Recovery Of Experimental Brain Ischemia, Wen Fury, Keun Woo Park, Zhuhao Wu, Eunhee Kim, Moon-Sook Woo, Yu Bai, Lynn E Macdonald, Susan D Croll, Sunghee Cho
Sustained Increases In Immune Transcripts And Immune Cell Trafficking During The Recovery Of Experimental Brain Ischemia, Wen Fury, Keun Woo Park, Zhuhao Wu, Eunhee Kim, Moon-Sook Woo, Yu Bai, Lynn E Macdonald, Susan D Croll, Sunghee Cho
Student and Faculty Publications
BACKGROUND AND PURPOSE: Stroke is a major cause of chronic neurological disability. There is considerable interest in understanding how acute transcriptome changes evolve into subacute and chronic patterns that facilitate or limit spontaneous recovery. Here we mapped longitudinal changes in gene expression at multiple time points after stroke in mice out to 6 months.
METHODS: Adult C57BL/6 mice were subjected to transient middle cerebral artery occlusion. Longitudinal transcriptome levels were measured at 10 time points after stroke from acute to recovery phases of ischemic stroke. Localization and the number of mononuclear phagocytes were determined in the postischemic brain. Whole-mount brain …
Nuclear Receptor Subfamily 4 Group A Member 2 Inhibits Activation Of Erk Signaling And Cell Growth In Response To Β-Adrenergic Stimulation In Adult Rat Cardiomyocytes, Sadia Ashraf, Yassmin K Hegazy, Romain Harmancey
Nuclear Receptor Subfamily 4 Group A Member 2 Inhibits Activation Of Erk Signaling And Cell Growth In Response To Β-Adrenergic Stimulation In Adult Rat Cardiomyocytes, Sadia Ashraf, Yassmin K Hegazy, Romain Harmancey
Faculty and Staff Publications
Sustained elevation of sympathetic activity is an important contributor to pathological cardiac hypertrophy, ventricular arrhythmias, and left ventricular contractile dysfunction in chronic heart failure. The orphan nuclear receptor NR4A2 is an immediate early-response gene activated in the heart under β-adrenergic stimulation. The goal of this study was to identify the transcriptional remodeling events induced by increased NR4A2 expression in cardiomyocytes and their impact on the physiological response of those cells to sustained β-adrenergic stimulation. Treatment of adult rat ventricular myocytes with isoproterenol induced a rapid (<4 >h) increase in NR4A2 levels that was accompanied by a transient (<24 >h) increase …24>4>
Nuclear Receptor Subfamily 4 Group A Member 2 Inhibits Activation Of Erk Signaling And Cell Growth In Response To Β-Adrenergic Stimulation In Adult Rat Cardiomyocytes, Sadia Ashraf, Yassmin K Hegazy, Romain Harmancey
Nuclear Receptor Subfamily 4 Group A Member 2 Inhibits Activation Of Erk Signaling And Cell Growth In Response To Β-Adrenergic Stimulation In Adult Rat Cardiomyocytes, Sadia Ashraf, Yassmin K Hegazy, Romain Harmancey
Faculty and Staff Publications
Sustained elevation of sympathetic activity is an important contributor to pathological cardiac hypertrophy, ventricular arrhythmias, and left ventricular contractile dysfunction in chronic heart failure. The orphan nuclear receptor NR4A2 is an immediate early-response gene activated in the heart under β-adrenergic stimulation. The goal of this study was to identify the transcriptional remodeling events induced by increased NR4A2 expression in cardiomyocytes and their impact on the physiological response of those cells to sustained β-adrenergic stimulation. Treatment of adult rat ventricular myocytes with isoproterenol induced a rapid (<4 >h) increase in NR4A2 levels that was accompanied by a transient (<24 >h) increase …24>4>
The Marine Sponge Metabolite Mycothiazole: A Novel Prototype Mitochondrial Complex I Inhibitor., J Brian Morgan, Fakhri Mahdi, Yang Liu, Veena Coothankandaswamy, Mika B Jekabsons, Tyler A. Johnson, Koneni V Sashidhara, Phillip Crews, Dale G Nagle, Yu-Dong Zhou
The Marine Sponge Metabolite Mycothiazole: A Novel Prototype Mitochondrial Complex I Inhibitor., J Brian Morgan, Fakhri Mahdi, Yang Liu, Veena Coothankandaswamy, Mika B Jekabsons, Tyler A. Johnson, Koneni V Sashidhara, Phillip Crews, Dale G Nagle, Yu-Dong Zhou
Tyler Johnson
A natural product chemistry-based approach was applied to discover small-molecule inhibitors of hypoxia-inducible factor-1 (HIF-1). A Petrosaspongia mycofijiensis marine sponge extract yielded mycothiazole (1), a solid tumor selective compound with no known mechanism for its cell line-dependent cytotoxic activity. Compound 1 inhibited hypoxic HIF-1 signaling in tumor cells (IC(50) 1nM) that correlated with the suppression of hypoxia-stimulated tumor angiogenesis in vitro. However, 1 exhibited pronounced neurotoxicity in vitro. Mechanistic studies revealed that 1 selectively suppresses mitochondrial respiration at complex I (NADH-ubiquinone oxidoreductase). Unlike rotenone, MPP(+), annonaceous acetogenins, piericidin A, and other complex I inhibitors, mycothiazole is a mixed polyketide/peptide-derived compound …
Disruption Of Immune Homeostasis In Human Dendritic Cells Via Regulation Of Autophagy And Apoptosis By, Mohamed M Meghil, Omnia K Tawfik, Mahmoud Elashiry, Mythilypriya Rajendran, Roger M Arce, David J Fulton, Patricia V Schoenlein, Christopher W Cutler
Disruption Of Immune Homeostasis In Human Dendritic Cells Via Regulation Of Autophagy And Apoptosis By, Mohamed M Meghil, Omnia K Tawfik, Mahmoud Elashiry, Mythilypriya Rajendran, Roger M Arce, David J Fulton, Patricia V Schoenlein, Christopher W Cutler
Student and Faculty Publications
As fundamental processes of immune homeostasis, autophagy, and apoptosis must be maintained to mitigate risk of chronic inflammation and autoimmune diseases. Periodontitis is a chronic inflammatory disease characterized by oral microbial dysbiosis, and dysregulation of dendritic cell (DC) and T cell responses. The aim of this study was to elucidate the underlying mechanisms by which the oral microbe
Apoptosis Signal-Regulating Kinase 1 Inhibition Attenuates Human Airway Smooth Muscle Growth And Migration In Chronic Obstructive Pulmonary Disease., Mathew S. Eapen, Anudeep Kota, Howard Vindin, Kielan D. Mcalinden, Dia Xenaki, Brian G. Oliver, Deepak A. Deshpande, Sukhwinder Singh Sohal, Pawan Sharma
Apoptosis Signal-Regulating Kinase 1 Inhibition Attenuates Human Airway Smooth Muscle Growth And Migration In Chronic Obstructive Pulmonary Disease., Mathew S. Eapen, Anudeep Kota, Howard Vindin, Kielan D. Mcalinden, Dia Xenaki, Brian G. Oliver, Deepak A. Deshpande, Sukhwinder Singh Sohal, Pawan Sharma
Center for Translational Medicine Faculty Papers
Increased airway smooth muscle (ASM) mass is observed in chronic obstructive pulmonary disease (COPD), which is correlated with disease severity and negatively affects lung function in these patients. Thus, there is clear unmet clinical need for finding new therapies which can target airway remodeling and disease progression in COPD. Apoptosis signal-regulating kinase 1 (ASK1) is a ubiquitously expressed mitogen-activated protein kinase (MAPK) kinase kinase (MAP3K) activated by various stress stimuli, including reactive oxygen species (ROS), tumor necrosis factor (TNF)-α, and lipopolysaccharide (LPS) and is known to regulate cell proliferation. ASM cells from COPD patients are hyperproliferative to mitogens in vitro. …
Effects Of Platelet-Activating Factor On Brain Microvascular Endothelial Cells., Eugen Brailoiu, Christine L. Barlow, Servio H. Ramirez, Mary E. Abood, G. Cristina Brailoiu
Effects Of Platelet-Activating Factor On Brain Microvascular Endothelial Cells., Eugen Brailoiu, Christine L. Barlow, Servio H. Ramirez, Mary E. Abood, G. Cristina Brailoiu
College of Pharmacy Faculty Papers
Platelet-activating factor (PAF) is a potent phospholipid mediator that exerts various pathophysiological effects by interacting with a G protein-coupled receptor. PAF has been reported to increase the permeability of the blood-brain barrier (BBB) via incompletely characterized mechanisms. We investigated the effect of PAF on rat brain microvascular endothelial cells (RBMVEC), a critical component of the BBB. PAF produced a dose-dependent increase in cytosolic Ca2+ concentration; the effect was prevented by the PAF receptor antagonist, WEB2086. The effect of PAF on cytosolic Ca2+ was abolished in Ca2+-free saline or in the presence of L-type voltage-gated Ca2+ …
Human Gucy2c-Targeted Chimeric Antigen Receptor (Car)-Expressing T Cells Eliminate Colorectal Cancer Metastases., Michael S. Magee, Tara S. Abraham, Trevor R. Baybutt, John C. Flickinger, Natalie A. Ridge, Glen P Marszalowicz, Priyanka Prajapati, Adam R. Hersperger, Scott A. Waldman, Adam E. Snook
Human Gucy2c-Targeted Chimeric Antigen Receptor (Car)-Expressing T Cells Eliminate Colorectal Cancer Metastases., Michael S. Magee, Tara S. Abraham, Trevor R. Baybutt, John C. Flickinger, Natalie A. Ridge, Glen P Marszalowicz, Priyanka Prajapati, Adam R. Hersperger, Scott A. Waldman, Adam E. Snook
Department of Pharmacology and Experimental Therapeutics Faculty Papers
One major hurdle to the success of adoptive T-cell therapy is the identification of antigens that permit effective targeting of tumors in the absence of toxicities to essential organs. Previous work has demonstrated that T cells engineered to express chimeric antigen receptors (CAR-T cells) targeting the murine homolog of the colorectal cancer antigen GUCY2C treat established colorectal cancer metastases, without toxicity to the normal GUCY2C-expressing intestinal epithelium, reflecting structural compartmentalization of endogenous GUCY2C to apical membranes comprising the intestinal lumen. Here, we examined the utility of a human-specific, GUCY2C-directed single-chain variable fragment as the basis for a CAR construct targeting …
Α-Catenin-Dependent Cytoskeletal Tension Controls Yap Activity In The Heart., Alexia Vite, Caimei Zhang, Roslyn Yi, Sabrina Emms, Glenn L. Radice
Α-Catenin-Dependent Cytoskeletal Tension Controls Yap Activity In The Heart., Alexia Vite, Caimei Zhang, Roslyn Yi, Sabrina Emms, Glenn L. Radice
Center for Translational Medicine Faculty Papers
Shortly after birth, muscle cells of the mammalian heart lose their ability to divide. At the same time, the N-cadherin/catenin cell adhesion complex accumulates at the cell termini, creating a specialized type of cell-cell contact called the intercalated disc (ICD). To investigate the relationship between ICD maturation and proliferation, αE-catenin (Ctnna1) and αT-catenin (Ctnna3) genes were deleted to generate cardiac-specific α-catenin double knockout (DKO) mice. DKO mice exhibited aberrant N-cadherin expression, mislocalized actomyosin activity and increased cardiomyocyte proliferation that was dependent on Yap activity. To assess effects on tension, cardiomyocytes were cultured on deformable polyacrylamide hydrogels of varying stiffness. When …
Cigarette Smoke Initiates Oxidative Stress-Induced Cellular Phenotypic Modulation Leading To Cerebral Aneurysm Pathogenesis., Robert M. Starke, John W. Thompson, Muhammad S. Ali, Crissey L. Pascale, Alejandra Martinez Lege, Dale Ding, Nohra Chalouhi, David M. Hasan, Pascal Jabbour, Gary K Owens, Michal Toborek, Joshua M. Hare, Aaron S. Dumont
Cigarette Smoke Initiates Oxidative Stress-Induced Cellular Phenotypic Modulation Leading To Cerebral Aneurysm Pathogenesis., Robert M. Starke, John W. Thompson, Muhammad S. Ali, Crissey L. Pascale, Alejandra Martinez Lege, Dale Ding, Nohra Chalouhi, David M. Hasan, Pascal Jabbour, Gary K Owens, Michal Toborek, Joshua M. Hare, Aaron S. Dumont
Department of Neurosurgery Faculty Papers
OBJECTIVE: Cigarette smoke exposure (CSE) is a risk factor for cerebral aneurysm (CA) formation, but the molecular mechanisms are unclear. Although CSE is known to contribute to excess reactive oxygen species generation, the role of oxidative stress on vascular smooth muscle cell (VSMC) phenotypic modulation and pathogenesis of CAs is unknown. The goal of this study was to investigate whether CSE activates a NOX (NADPH oxidase)-dependent pathway leading to VSMC phenotypic modulation and CA formation and rupture.
APPROACH AND RESULTS: In cultured cerebral VSMCs, CSE increased expression of NOX1 and reactive oxygen species which preceded upregulation of proinflammatory/matrix remodeling genes …
Neurotensin Receptor 3/Sortilin Contributes To Tumorigenesis Of Neuroendocrine Tumors Through Augmentation Of Cell Adhesion And Migration, Ji Tae Kim, Dana L. Napier, Heidi L. Weiss, Eun Y. Lee, Courtney M. Townsend, B. Mark Evers
Neurotensin Receptor 3/Sortilin Contributes To Tumorigenesis Of Neuroendocrine Tumors Through Augmentation Of Cell Adhesion And Migration, Ji Tae Kim, Dana L. Napier, Heidi L. Weiss, Eun Y. Lee, Courtney M. Townsend, B. Mark Evers
Markey Cancer Center Faculty Publications
Neurotensin (NTS), a 13–amino acid peptide which is distributed predominantly along gastrointestinal tract, has multiple physiologic and pathologic functions, and its effects are mediated by three distinct NTS receptors (NTSRs). Overexpression and activation of NTS signaling components, especially NTS and/or NTSR1, are closely linked with cancer progression and metastasis in various types of cancers including neuroendocrine tumors (NETs). Although deregulation of NTSR3/sortilin has been implicated in a variety of human diseases, the expression and role of NTSR3/sortilin in NETs have not been elucidated. In this study, we investigated the expression and oncogenic effect of NTSR3/sortilin in NETs. Increased protein levels …
Endothelial Cell-Derived Microparticles From Patients With Obstructive Sleep Apnea Hypoxia Syndrome And Coronary Artery Disease Increase Aortic Endothelial Cell Dysfunction., Lixin Jia, Jingyao Fan, Wei Cui, Sa Liu, Na Li, Wayne Bond Lau, Xin-Liang Ma, Jie Du, Shaoping Nie, Yongxiang Wei
Endothelial Cell-Derived Microparticles From Patients With Obstructive Sleep Apnea Hypoxia Syndrome And Coronary Artery Disease Increase Aortic Endothelial Cell Dysfunction., Lixin Jia, Jingyao Fan, Wei Cui, Sa Liu, Na Li, Wayne Bond Lau, Xin-Liang Ma, Jie Du, Shaoping Nie, Yongxiang Wei
Department of Emergency Medicine Faculty Papers
BACKGROUND/AIMS: Obstructive sleep apnea hypoxia syndrome (OSAHS) is an independent risk factor for coronary artery disease (CAD). Treatment of OSAHS improves clinical outcome in some CAD patients, but the relationship between OSAHS and CAD is complex. Microparticles (MPs) are shed by the plasma membrane by either physiologic or pathologic stimulation. In the current study, we investigated the role of MPs in the context of OSAHS.
METHODS AND RESULTS: 54 patients with both suspected coronary artery stenosis and OSAHS were recruited and underwent both coronary arteriography and polysomnography. Circulating MPs were isolated and analyzed by flow cytometry. CAD+OSAHS patients exhibited greater …
Pro-Inflammatory Chemokines And Cytokines Dominate The Blister Fluid Molecular Signature In Patients With Epidermolysis Bullosa And Affect Leukocyte And Stem Cell Migration., Vitali Alexeev, Julio Cesar Salas-Alanis, Francis Palisson, Lila Mukhtarzada, Giulio Fortuna, Jouni Uitto, Andrew P. South, Olga Igoucheva
Pro-Inflammatory Chemokines And Cytokines Dominate The Blister Fluid Molecular Signature In Patients With Epidermolysis Bullosa And Affect Leukocyte And Stem Cell Migration., Vitali Alexeev, Julio Cesar Salas-Alanis, Francis Palisson, Lila Mukhtarzada, Giulio Fortuna, Jouni Uitto, Andrew P. South, Olga Igoucheva
Department of Dermatology and Cutaneous Biology Faculty Papers
Hereditary epidermolysis bullosa (EB) is associated with skin blistering and the development of chronic nonhealing wounds. Although clinical studies have shown that cell-based therapies improve wound healing, the recruitment of therapeutic cells to blistering skin and to more advanced skin lesions remains a challenge. Here, we analyzed cytokines and chemokines in blister fluids of patients affected by dystrophic, junctional, and simplex EB. Our analysis revealed high levels of CXCR1, CXCR2, CCR2, and CCR4 ligands, particularly dominant in dystrophic and junctional EB. In vitro migration assays demonstrated the preferential recruitment of CCR4+ lymphocytes and CXCR1+, CXCR2+, …