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Articles 4621 - 4650 of 5734

Full-Text Articles in Medical Specialties

Case Report: Artemis Deficiency And 3m Syndrome-Coexistence Of Two Distinct Genetic Disorders, Ayca Ceylan, Ilyas Emre Tekdemir, Nadir Kocak, Ivan Kingyue Chinn, Jordan Scott Orange, Hasibe Artac Jan 2023

Case Report: Artemis Deficiency And 3m Syndrome-Coexistence Of Two Distinct Genetic Disorders, Ayca Ceylan, Ilyas Emre Tekdemir, Nadir Kocak, Ivan Kingyue Chinn, Jordan Scott Orange, Hasibe Artac

Faculty, Staff and Students Publications

The presence of two different genetic conditions in the same individual is possible, especially in populations with consanguinity. In this case report, we present the coexistence of Artemis deficiency (OMIM 602450) and Three M (3M) syndrome (OMIM 273750). A 10-months-old male patient with neuromotor developmental delay was evaluated for immunodeficiency due to recurrent respiratory infections diarrhea and oral moniliasis from the age of 1.5 months. He had facial dysmorphism with rotated ears, flat nose and hypertelorism. Neurological examination revealed generalized hypotonia and mental motor delay. Immunological screening of the patient demonstrated mild lymphopenia, hypogammaglobulinemia, reduced number of CD3


Brain Monoamine Vesicular Transport Disease Caused By Homozygous Slc18a2 Variants: A Study In 42 Affected Individuals, Ken Saida, Reza Maroofian, Toru Sengoku, Tadahiro Mitani, Alistair T Pagnamenta, Dana Marafi, Maha S Zaki, Thomas J O'Brien, Ehsan Ghayoor Karimiani, Rauan Kaiyrzhanov, Marina Takizawa, Sachiko Ohori, Huey Yin Leong, Gulsen Akay, Hamid Galehdari, Mina Zamani, Ratna Romy, Christopher J Carroll, Mehran Beiraghi Toosi, Farah Ashrafzadeh, Shima Imannezhad, Hadis Malek, Najmeh Ahangari, Hoda Tomoum, Vykuntaraju K Gowda, Varunvenkat M Srinivasan, David Murphy, Natalia Dominik, Hasnaa M Elbendary, Karima Rafat, Sanem Yilmaz, Seda Kanmaz, Mine Serin, Deepa Krishnakumar, Alice Gardham, Anna Maw, Tekki Sreenivasa Rao, Sarah Alsubhi, Myriam Srour, Daniela Buhas, Tamison Jewett, Rachel E Goldberg, Hanan Shamseldin, Eirik Frengen, Doriana Misceo, Petter Strømme, José Ricardo Magliocco Ceroni, Chong Ae Kim, Gozde Yesil, Esma Sengenc, Serhat Guler, Mariam Hull, Mered Parnes, Dilek Aktas, Banu Anlar, Yavuz Bayram, Davut Pehlivan, Jennifer E Posey, Shahryar Alavi, Seyed Ali Madani Manshadi, Hamad Alzaidan, Mohammad Al-Owain, Lama Alabdi, Ferdous Abdulwahab, Futoshi Sekiguchi, Kohei Hamanaka, Atsushi Fujita, Yuri Uchiyama, Takeshi Mizuguchi, Satoko Miyatake, Noriko Miyake, Reem M Elshafie, Kamran Salayev, Ulviyya Guliyeva, Fowzan S Alkuraya, Joseph G Gleeson, Kristin G Monaghan, Katherine G Langley, Hui Yang, Mahsa Motavaf, Saeid Safari, Mozhgan Alipour, Kazuhiro Ogata, André E X Brown, James R Lupski, Henry Houlden, Naomichi Matsumoto Jan 2023

Brain Monoamine Vesicular Transport Disease Caused By Homozygous Slc18a2 Variants: A Study In 42 Affected Individuals, Ken Saida, Reza Maroofian, Toru Sengoku, Tadahiro Mitani, Alistair T Pagnamenta, Dana Marafi, Maha S Zaki, Thomas J O'Brien, Ehsan Ghayoor Karimiani, Rauan Kaiyrzhanov, Marina Takizawa, Sachiko Ohori, Huey Yin Leong, Gulsen Akay, Hamid Galehdari, Mina Zamani, Ratna Romy, Christopher J Carroll, Mehran Beiraghi Toosi, Farah Ashrafzadeh, Shima Imannezhad, Hadis Malek, Najmeh Ahangari, Hoda Tomoum, Vykuntaraju K Gowda, Varunvenkat M Srinivasan, David Murphy, Natalia Dominik, Hasnaa M Elbendary, Karima Rafat, Sanem Yilmaz, Seda Kanmaz, Mine Serin, Deepa Krishnakumar, Alice Gardham, Anna Maw, Tekki Sreenivasa Rao, Sarah Alsubhi, Myriam Srour, Daniela Buhas, Tamison Jewett, Rachel E Goldberg, Hanan Shamseldin, Eirik Frengen, Doriana Misceo, Petter Strømme, José Ricardo Magliocco Ceroni, Chong Ae Kim, Gozde Yesil, Esma Sengenc, Serhat Guler, Mariam Hull, Mered Parnes, Dilek Aktas, Banu Anlar, Yavuz Bayram, Davut Pehlivan, Jennifer E Posey, Shahryar Alavi, Seyed Ali Madani Manshadi, Hamad Alzaidan, Mohammad Al-Owain, Lama Alabdi, Ferdous Abdulwahab, Futoshi Sekiguchi, Kohei Hamanaka, Atsushi Fujita, Yuri Uchiyama, Takeshi Mizuguchi, Satoko Miyatake, Noriko Miyake, Reem M Elshafie, Kamran Salayev, Ulviyya Guliyeva, Fowzan S Alkuraya, Joseph G Gleeson, Kristin G Monaghan, Katherine G Langley, Hui Yang, Mahsa Motavaf, Saeid Safari, Mozhgan Alipour, Kazuhiro Ogata, André E X Brown, James R Lupski, Henry Houlden, Naomichi Matsumoto

Faculty, Staff and Students Publications

Purpose: Brain monoamine vesicular transport disease is an infantile-onset movement disorder that mimics cerebral palsy. In 2013, the homozygous SLC18A2 variant, p.Pro387Leu, was first reported as a cause of this rare disorder, and dopamine agonists were efficient for treating affected individuals from a single large family. To date, only 6 variants have been reported. In this study, we evaluated genotype-phenotype correlations in individuals with biallelic SLC18A2 variants.

Methods: A total of 42 affected individuals with homozygous SLC18A2 variant alleles were identified. We evaluated genotype-phenotype correlations and the missense variants in the affected individuals based on the structural modeling of rat …


Genetics In Medicine Open To Us All, Bo Yuan Jan 2023

Genetics In Medicine Open To Us All, Bo Yuan

Faculty, Staff and Students Publications

No abstract provided.


The Role Of Neural And Genetic Processes In Learning To Read And Specific Reading Disabilities: Implications For Instruction, Jessica A Church, Elena L Grigorenko, Jack M Fletcher Jan 2023

The Role Of Neural And Genetic Processes In Learning To Read And Specific Reading Disabilities: Implications For Instruction, Jessica A Church, Elena L Grigorenko, Jack M Fletcher

Faculty, Staff and Students Publications

To learn to read, the brain must repurpose neural systems for oral language and visual processing to mediate written language. We begin with a description of computational models for how alphabetic written language is processed. Next, we explain the roles of a dorsal sublexical system in the brain that relates print and speech, a ventral lexical system that develops the visual expertise for rapid orthographic processing at the word level, and the role of cognitive control networks that regulate attentional processes as children read. We then use studies of children, adult illiterates learning to read, and studies of poor readers …


Ultrahigh Resolution Lipid Mass Spectrometry Imaging Of High-Grade Serous Ovarian Cancer Mouse Models, Xin Ma, Andro Botros, Sylvia R Yun, Eun Young Park, Olga Kim, Soojin Park, Thu-Huyen Pham, Ruihong Chen, Murugesan Palaniappan, Martin M Matzuk, Jaeyeon Kim, Facundo M Fernández Jan 2023

Ultrahigh Resolution Lipid Mass Spectrometry Imaging Of High-Grade Serous Ovarian Cancer Mouse Models, Xin Ma, Andro Botros, Sylvia R Yun, Eun Young Park, Olga Kim, Soojin Park, Thu-Huyen Pham, Ruihong Chen, Murugesan Palaniappan, Martin M Matzuk, Jaeyeon Kim, Facundo M Fernández

Faculty, Staff and Students Publications

No effective screening tools for ovarian cancer (OC) exist, making it one of the deadliest cancers among women. Considering that little is known about the detailed progression and metastasis mechanism of OC at a molecular level, it is crucial to gain more insights into how metabolic and signaling alterations accompany its development. Herein, we present a comprehensive study using ultra-high-resolution Fourier transform ion cyclotron resonance matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI) to investigate the spatial distribution and alterations of lipids in ovarian tissues collected from double knockout (n = 4) and triple mutant mouse models (n …


Oocyte-Specific Wee1-Like Protein Kinase 2 Is Dispensable For Fertility In Mice, Kaori Nozawa, Zian Liao, Yuhkoh Satouh, Ting Geng, Masahito Ikawa, Diana Monsivais, Martin M Matzuk Jan 2023

Oocyte-Specific Wee1-Like Protein Kinase 2 Is Dispensable For Fertility In Mice, Kaori Nozawa, Zian Liao, Yuhkoh Satouh, Ting Geng, Masahito Ikawa, Diana Monsivais, Martin M Matzuk

Faculty, Staff and Students Publications

Wee1-like protein kinase 2 (WEE2) is an oocyte-specific protein tyrosine kinase involved in the regulation of oocyte meiotic arrest in humans. As such, it has been proposed as a candidate for non-hormonal female contraception although pre-clinical models have not been reported. Therefore, we developed two novel knockout mouse models using CRISPR/Cas9 to test loss-of-function of Wee2 on female fertility. A frameshift mutation at the Wee2 translation start codon in exon 2 had no effect on litter size, litter production, or the ability of oocytes to maintain prophase I arrest. Because of the lack of a reproductive phenotype, we additionally generated …


Variantsurvival: A Tool To Identify Genotype-Treatment Response, Thomas Krannich, Marina Herrera Sarrias, Hiba Ben Aribi, Moustafa Shokrof, Alfredo Iacoangeli, Ammar Al-Chalabi, Fritz J Sedlazeck, Ben Busby, Ahmad Al Khleifat Jan 2023

Variantsurvival: A Tool To Identify Genotype-Treatment Response, Thomas Krannich, Marina Herrera Sarrias, Hiba Ben Aribi, Moustafa Shokrof, Alfredo Iacoangeli, Ammar Al-Chalabi, Fritz J Sedlazeck, Ben Busby, Ahmad Al Khleifat

Faculty, Staff and Students Publications

Associated Data


Cloud-Native Distributed Genomic Pileup Operations, Marek Wiewiórka, Agnieszka Szmurło, Paweł Stankiewicz, Tomasz Gambin Jan 2023

Cloud-Native Distributed Genomic Pileup Operations, Marek Wiewiórka, Agnieszka Szmurło, Paweł Stankiewicz, Tomasz Gambin

Faculty, Staff and Students Publications

MOTIVATION: Pileup analysis is a building block of many bioinformatics pipelines, including variant calling and genotyping. This step tends to become a bottleneck of the entire assay since the straightforward pileup implementations involve processing of all base calls from all alignments sequentially. On the other hand, a distributed version of the algorithm faces the intrinsic challenge of splitting reads-oriented file formats into self-contained partitions to avoid costly data exchange between computational nodes.

RESULTS: Here, we present a scalable, distributed and efficient implementation of a pileup algorithm that is suitable for deploying in cloud computing environments. In particular, we implemented: (i) …


Milder Loss Of Insulin-Containing Islets In Individuals With Type 1 Diabetes And Type 2 Diabetes-Associated Tcf7l2 Genetic Variants, Maria J Redondo, Sarah J Richardson, Daniel Perry, Charles G Minard, Alice L J Carr, Todd Brusko, Irina Kusmartseva, Alberto Pugliese, Mark A Atkinson Jan 2023

Milder Loss Of Insulin-Containing Islets In Individuals With Type 1 Diabetes And Type 2 Diabetes-Associated Tcf7l2 Genetic Variants, Maria J Redondo, Sarah J Richardson, Daniel Perry, Charles G Minard, Alice L J Carr, Todd Brusko, Irina Kusmartseva, Alberto Pugliese, Mark A Atkinson

Faculty, Staff and Students Publications

AIMS/HYPOTHESIS: TCF7L2 variants are the strongest genetic risk factor for type 2 diabetes. In individuals with type 1 diabetes, these variants are associated with a higher C-peptide AUC, a lower glucose AUC during an OGTT, single autoantibody positivity near diagnosis, particularly in individuals older than 12 years of age, and a lower frequency of type 1 diabetes-associated HLA genotypes. Based on initial observations from clinical cohorts, we tested the hypothesis that type 2 diabetes-predisposing TCF7L2 genetic variants are associated with a higher percentage of residual insulin-containing cells (ICI%) in pancreases of donors with type 1 diabetes, by examining genomic data …


Tanshinone Iia Inhibits Cell Viability And Promotes Puma-Mediated Apoptosis Of Oral Squamous Cell Carcinoma, Shuangze Han, Xinfang Yu, Ruirui Wang, Xiaocong Wang, Lulu Liu, Qing Zhao, Rongbo Xie, Ming Li, Zhong Su Zhou Jan 2023

Tanshinone Iia Inhibits Cell Viability And Promotes Puma-Mediated Apoptosis Of Oral Squamous Cell Carcinoma, Shuangze Han, Xinfang Yu, Ruirui Wang, Xiaocong Wang, Lulu Liu, Qing Zhao, Rongbo Xie, Ming Li, Zhong Su Zhou

Faculty, Staff and Students Publications

Apoptosis alteration is responsible for tumorigenesis and tumor resistance to therapies. The natural product Tanshinone IIA (Tan IIA) exhibits potent inhibitory effects against various tumors. However, the effect of Tan IIA on apoptosis and its underlying mechanism remains elusive in oral squamous cell carcinoma (OSCC). Here, we demonstrated that Tan IIA dose-dependently suppressed cell viability and colony formation in CAL27, SCC4, and SCC25 cells. Moreover, Tan IIA inhibited Akt activation from inducing Foxo3a dephosphorylation and PUMA-mediated apoptosis. PUMA or Foxo3a knockdown compromised the inhibitory effect of Tan IIA on OSCC cells. Tan IIA administration inhibited CAL27-deprived xenograft tumor growth and …


Differential Regulation Of Skeletal Stem/Progenitor Cells In Distinct Skeletal Compartments, Jea Giezl Niedo Solidum, Youngjae Jeong, Francisco Heralde, Dongsu Park Jan 2023

Differential Regulation Of Skeletal Stem/Progenitor Cells In Distinct Skeletal Compartments, Jea Giezl Niedo Solidum, Youngjae Jeong, Francisco Heralde, Dongsu Park

Faculty, Staff and Students Publications

Skeletal stem/progenitor cells (SSPCs), characterized by self-renewal and multipotency, are essential for skeletal development, bone remodeling, and bone repair. These cells have traditionally been known to reside within the bone marrow, but recent studies have identified the presence of distinct SSPC populations in other skeletal compartments such as the growth plate, periosteum, and calvarial sutures. Differences in the cellular and matrix environment of distinct SSPC populations are believed to regulate their stemness and to direct their roles at different stages of development, homeostasis, and regeneration; differences in embryonic origin and adjacent tissue structures also affect SSPC regulation. As these SSPC …


Cell-Type-Specific Aging Clocks To Quantify Aging And Rejuvenation In Neurogenic Regions Of The Brain, Matthew T Buckley, Eric D Sun, Benson M George, Ling Liu, Nicholas Schaum, Lucy Xu, Jaime M Reyes, Margaret A Goodell, Irving L Weissman, Tony Wyss-Coray, Thomas A Rando, Anne Brunet Jan 2023

Cell-Type-Specific Aging Clocks To Quantify Aging And Rejuvenation In Neurogenic Regions Of The Brain, Matthew T Buckley, Eric D Sun, Benson M George, Ling Liu, Nicholas Schaum, Lucy Xu, Jaime M Reyes, Margaret A Goodell, Irving L Weissman, Tony Wyss-Coray, Thomas A Rando, Anne Brunet

Faculty, Staff and Students Publications

The diversity of cell types is a challenge for quantifying aging and its reversal. Here we develop 'aging clocks' based on single-cell transcriptomics to characterize cell-type-specific aging and rejuvenation. We generated single-cell transcriptomes from the subventricular zone neurogenic region of 28 mice, tiling ages from young to old. We trained single-cell-based regression models to predict chronological age and biological age (neural stem cell proliferation capacity). These aging clocks are generalizable to independent cohorts of mice, other regions of the brains, and other species. To determine if these aging clocks could quantify transcriptomic rejuvenation, we generated single-cell transcriptomic datasets of neurogenic …


Payer Reimbursement Practices And Incentives For Improving Interpretation Of Germline Genetic Testing, Patricia Deverka, Janis Geary, Charles Mathews, Matan Cohen, Gillian Hooker, Mary Majumder, Zuzana Skvarkova, Robert Cook-Deegan Jan 2023

Payer Reimbursement Practices And Incentives For Improving Interpretation Of Germline Genetic Testing, Patricia Deverka, Janis Geary, Charles Mathews, Matan Cohen, Gillian Hooker, Mary Majumder, Zuzana Skvarkova, Robert Cook-Deegan

Center for Medical Ethics and Health Policy Staff Publications

Germline genetic testing for inherited cancer risk has shifted to multi-gene panel tests (MGPTs). While MGPTs detect more pathogenic variants, they also detect more variants of uncertain significance (VUSs) that increase the possibility of harms such as unnecessary surgery. Data sharing by laboratories is critical to addressing the VUS problem. However, barriers to sharing and an absence of incentives have limited laboratory contributions to the ClinVar database. Payers can play a crucial role in the expansion of knowledge and effectiveness of genetic testing. Current policies affecting MGPT reimbursement are complex and create perverse incentives. Trends in utilization and coverage for …


Factors Associated With Nonsyndromic Anotia And Microtia, Texas, 1999–2014, Jeremy M Schraw, J P Woodhouse, Renata H Benjamin, Charles J Shumate, Joanne Nguyen, Mark A Canfield, A J Agopian, Philip J Lupo Jan 2023

Factors Associated With Nonsyndromic Anotia And Microtia, Texas, 1999–2014, Jeremy M Schraw, J P Woodhouse, Renata H Benjamin, Charles J Shumate, Joanne Nguyen, Mark A Canfield, A J Agopian, Philip J Lupo

Faculty, Staff and Students Publications

BACKGROUND: Few risk factors have been identified for nonsyndromic anotia/microtia (A/M).

METHODS: We obtained data on cases and a reference population of all livebirths in Texas for 1999-2014 from the Texas Birth Defects Registry (TBDR) and Texas vital records. We estimated prevalence ratios (PRs) and 95% confidence intervals (CIs) for A/M (any, isolated, nonisolated, unilateral, and bilateral) using Poisson regression. We evaluated trends in prevalence rates using Joinpoint regression.

RESULTS: We identified 1,322 cases, of whom 982 (74.3%) had isolated and 1,175 (88.9%) had unilateral A/M. Prevalence was increased among males (PR: 1.3, 95% CI: 1.2-1.4), offspring of women with …


Methodological Considerations In Pisces 3: A Randomized, Placebo-Controlled Study Of Intracerebral Stem Cells In Subjects With Disability Following An Ischemic Stroke, Daniel T Laskowitz, Keith W Muir, Sean I Savitz, Lawrence R Wechsler, Julie G Pilitsis, Scott Y Rahimi, Richard L Beckman, Vincent Holmes, Peng R Chen, Laura Juel, Deborah Koltai, Brad J Kolls Jan 2023

Methodological Considerations In Pisces 3: A Randomized, Placebo-Controlled Study Of Intracerebral Stem Cells In Subjects With Disability Following An Ischemic Stroke, Daniel T Laskowitz, Keith W Muir, Sean I Savitz, Lawrence R Wechsler, Julie G Pilitsis, Scott Y Rahimi, Richard L Beckman, Vincent Holmes, Peng R Chen, Laura Juel, Deborah Koltai, Brad J Kolls

Faculty, Staff and Student Publications

Background and hypothesis: At present, there are no medical interventions proven to improve functional recovery in patients with subacute stroke. We hypothesize that the intraparenchymal administration of CTX0E03, a conditionally immortalized neural stem cell line, linked with a standardized rehabilitation therapy regimen for the upper limb, would improve functional outcomes in patients 6-12 months after an index ischemic stroke.

Study design: PISCES III was designed as a multicenter prospective, sham-controlled, outcome-blinded randomized clinical trial. Eligibility required a qualifying ischemic stroke 6-12 months prior to surgical intervention. Patients must be between 35 and 75 years of age and have residual moderate …


Cerebellar Dysfunction In Rodent Models With Dystonia, Tremor, And Ataxia, Meike E Van Der Heijden, Roy V Sillitoe Jan 2023

Cerebellar Dysfunction In Rodent Models With Dystonia, Tremor, And Ataxia, Meike E Van Der Heijden, Roy V Sillitoe

Duncan NRI Faculty and Staff Publications

Dystonia is a movement disorder characterized by involuntary co- or over-contractions of the muscles, which results in abnormal postures and movements. These symptoms arise from the pathophysiology of a brain-wide dystonia network. There is mounting evidence suggesting that the cerebellum is a central node in this network. For example, manipulations that target the cerebellum cause dystonic symptoms in mice, and cerebellar neuromodulation reduces these symptoms. Although numerous findings provide insight into dystonia pathophysiology, they also raise further questions. Namely, how does cerebellar pathophysiology cause the diverse motor abnormalities in dystonia, tremor, and ataxia? Here, we describe recent work in rodents …


Function And Dysfunction Of The Dystonia Network: An Exploration Of Neural Circuits That Underlie The Acquired And Isolated Dystonias, Jason S Gill, Megan X Nguyen, Mariam Hull, Meike E Van Der Heijden, Ken Nguyen, Sruthi P Thomas, Roy V Sillitoe Jan 2023

Function And Dysfunction Of The Dystonia Network: An Exploration Of Neural Circuits That Underlie The Acquired And Isolated Dystonias, Jason S Gill, Megan X Nguyen, Mariam Hull, Meike E Van Der Heijden, Ken Nguyen, Sruthi P Thomas, Roy V Sillitoe

Duncan NRI Faculty and Staff Publications

Dystonia is a highly prevalent movement disorder that can manifest at any time across the lifespan. An increasing number of investigations have tied this disorder to dysfunction of a broad "dystonia network" encompassing the cerebellum, thalamus, basal ganglia, and cortex. However, pinpointing how dysfunction of the various anatomic components of the network produces the wide variety of dystonia presentations across etiologies remains a difficult problem. In this review, a discussion of functional network findings in non-mendelian etiologies of dystonia is undertaken. Initially acquired etiologies of dystonia and how lesion location leads to alterations in network function are explored, first through …


Social Behavioral Impairments In Syngap1-Related Intellectual Disability, Hajer Naveed, Maria Mccormack, J Lloyd Holder Jan 2023

Social Behavioral Impairments In Syngap1-Related Intellectual Disability, Hajer Naveed, Maria Mccormack, J Lloyd Holder

Duncan NRI Faculty and Staff Publications

Introduction: Developmental synaptopathies are neurodevelopmental disorders caused by genetic mutations disrupting the development and function of neuronal synapses.

Methods: We administered the validated Social Responsiveness Scale, Second Edition (SRS-2) to investigate the phenotypic presentation of social-behavioral impairments for the developmental synaptopathy-SYNGAP1-related Intellectual Disability (SYNGAP1-ID) (n = 32) compared with a phenotypically similar disorder Phelan-McDermid syndrome (PMD) (n = 27) and healthy controls (n = 43). A short form SRS-2 analysis (n = 85) was also conducted.

Results: Both SYNGAP1-ID and PMD had significantly elevated total and subcategory T-scores, with no significant score differences between SYNGAP1 …


Engineered Cd4 T Cells Expressing A Membrane Anchored Viral Inhibitor Restrict Hiv-1 Through Cis And Trans Mechanisms, Weiming Wang, Khanghy Truong, Chaobaihui Ye, Suman Sharma, Huan He, Lihong Liu, Michael Wen, Anisha Misra, Paul Zhou, Jason T Kimata Jan 2023

Engineered Cd4 T Cells Expressing A Membrane Anchored Viral Inhibitor Restrict Hiv-1 Through Cis And Trans Mechanisms, Weiming Wang, Khanghy Truong, Chaobaihui Ye, Suman Sharma, Huan He, Lihong Liu, Michael Wen, Anisha Misra, Paul Zhou, Jason T Kimata

Faculty, Staff and Students Publications

HIV-1 infection of target cells can occur through either cell-free virions or cell-cell transmission in a virological synapse, with the latter mechanism of infection reported to be 100- to 1,000-fold more efficient. Neutralizing antibodies and entry inhibitors effectively block cell-free HIV-1, but with few exceptions, they display much less inhibitory activity against cell-mediated HIV-1 transmission. Previously, we showed that engineering HIV-1 target cells by genetically linking single-chain variable fragments (scFvs) of antibodies to glycosyl phosphatidylinositol (GPI) potently blocks infection by cell-free virions and cell-mediated infection by immature dendritic cell (iDC)-captured HIV-1. Expression of scFvs on CD4


Structural Basis Of Ferroportin Inhibition By Minihepcidin Pr73, Azaan Saalim Wilbon, Jiemin Shen, Piotr Ruchala, Ming Zhou, Yaping Pan Jan 2023

Structural Basis Of Ferroportin Inhibition By Minihepcidin Pr73, Azaan Saalim Wilbon, Jiemin Shen, Piotr Ruchala, Ming Zhou, Yaping Pan

Faculty, Staff and Students Publications

Ferroportin (Fpn) is the only known iron exporter in humans and is essential for maintaining iron homeostasis. Fpn activity is suppressed by hepcidin, an endogenous peptide hormone, which inhibits iron export and promotes endocytosis of Fpn. Hepcidin deficiency leads to hemochromatosis and iron-loading anemia. Previous studies have shown that small peptides that mimic the first few residues of hepcidin, i.e., minihepcidins, are more potent than hepcidin. However, the mechanism of enhanced inhibition by minihepcidins remains unclear. Here, we report the structure of human ferroportin in complex with a minihepcidin, PR73 that mimics the first 9 residues of hepcidin, at 2.7 …


Examining Sociodemographic Correlates Of Opioid Use, Misuse, And Use Disorders In The All Of Us Research Program, Hsueh-Han Yeh, Cathryn Peltz-Rauchman, Christine C Johnson, Pamala A Pawloski, David Chesla, Stephen C Waring, Alan B Stevens, Mara Epstein, Christine Joseph, Lisa R Miller-Matero, Hongsheng Gui, Amy Tang, Eric Boerwinkle, Mine Cicek, Cheryl R Clark, Elizabeth Cohn, Kelly Gebo, Roxana Loperena, Kelsey Mayo, Stephen Mockrin, Lucila Ohno-Machado, Sheri Schully, Andrea H Ramirez, Jun Qian, Brian K Ahmedani Jan 2023

Examining Sociodemographic Correlates Of Opioid Use, Misuse, And Use Disorders In The All Of Us Research Program, Hsueh-Han Yeh, Cathryn Peltz-Rauchman, Christine C Johnson, Pamala A Pawloski, David Chesla, Stephen C Waring, Alan B Stevens, Mara Epstein, Christine Joseph, Lisa R Miller-Matero, Hongsheng Gui, Amy Tang, Eric Boerwinkle, Mine Cicek, Cheryl R Clark, Elizabeth Cohn, Kelly Gebo, Roxana Loperena, Kelsey Mayo, Stephen Mockrin, Lucila Ohno-Machado, Sheri Schully, Andrea H Ramirez, Jun Qian, Brian K Ahmedani

Faculty, Staff and Student Publications

Background: The All of Us Research Program enrolls diverse US participants which provide a unique opportunity to better understand the problem of opioid use. This study aims to estimate the prevalence of opioid use and its association with sociodemographic characteristics from survey data and electronic health record (EHR).

Methods: A total of 214,206 participants were included in this study who competed survey modules and shared EHR data. Adjusted logistic regressions were used to explore the associations between sociodemographic characteristics and opioid use.

Results: The lifetime prevalence of street opioids was 4%, and the nonmedical use of prescription opioids was 9%. …


Editorial: Advances In Mathematical And Computational Oncology, Volume Iii, George Bebis, Mamoru Kato, Mohammad Kohandel, Kathleen Wilkie, Dinler A Antunes, Ken Chen, Jinzhuang Dou Jan 2023

Editorial: Advances In Mathematical And Computational Oncology, Volume Iii, George Bebis, Mamoru Kato, Mohammad Kohandel, Kathleen Wilkie, Dinler A Antunes, Ken Chen, Jinzhuang Dou

Faculty, Staff and Student Publications

No abstract provided.


Case Report: Responses To The Combination Of Gemcitabine With Sirolimus In Two Patients With Tsc-Mutated Sarcomas, Elise F Nassif, Cissimol P Joseph, Rossana Lazcano, Jocelyn T Joseph, Prapassorn Thirasastr, Alexander J Lazar, Neeta Somaiah Jan 2023

Case Report: Responses To The Combination Of Gemcitabine With Sirolimus In Two Patients With Tsc-Mutated Sarcomas, Elise F Nassif, Cissimol P Joseph, Rossana Lazcano, Jocelyn T Joseph, Prapassorn Thirasastr, Alexander J Lazar, Neeta Somaiah

Faculty, Staff and Student Publications

TSC-mutated sarcomas are rare molecular and histologic types of sarcoma. Due to the presence of their specific oncogenic driver mutation, these sarcomas are particularly sensitive to mTOR inhibitors. Recently, nab-sirolimus, an albumin-bound mTOR inhibitor, was approved by the Food and Drug Administration (FDA) for PEComas, which harbor a TSC mutation, and this drug remains the only FDA-approved systemic treatment for these tumors. We report on two cases of patients with TSC-mutated sarcomas who experienced significant responses to the combination of gemcitabine and sirolimus, after progression on prior gemcitabine-based chemotherapy and single agent mTOR inhibition with nab-sirolimus. …


Stellettin B Sensitizes Glioblastoma To Dna-Damaging Treatments By Suppressing Pi3k-Mediated Homologous Recombination Repair, Xin Peng, Shaolu Zhang, Yingying Wang, Zhicheng Zhou, Zixiang Yu, Zhenxing Zhong, Liang Zhang, Zhe-Sheng Chen, Francois X Claret, Moshe Elkabets, Feng Wang, Fan Sun, Ran Wang, Han Liang, Hou-Wen Lin, Dexin Kong Jan 2023

Stellettin B Sensitizes Glioblastoma To Dna-Damaging Treatments By Suppressing Pi3k-Mediated Homologous Recombination Repair, Xin Peng, Shaolu Zhang, Yingying Wang, Zhicheng Zhou, Zixiang Yu, Zhenxing Zhong, Liang Zhang, Zhe-Sheng Chen, Francois X Claret, Moshe Elkabets, Feng Wang, Fan Sun, Ran Wang, Han Liang, Hou-Wen Lin, Dexin Kong

Faculty, Staff and Student Publications

Glioblastoma (GBM) is the most aggressive type of cancer. Its current first-line postsurgery regimens are radiotherapy and temozolomide (TMZ) chemotherapy, both of which are DNA damage-inducing therapies but show very limited efficacy and a high risk of resistance. There is an urgent need to develop novel agents to sensitize GBM to DNA-damaging treatments. Here it is found that the triterpene compound stellettin B (STELB) greatly enhances the sensitivity of GBM to ionizing radiation and TMZ in vitro and in vivo. Mechanistically, STELB inhibits the expression of homologous recombination repair (HR) factors BRCA1/2 and RAD51 by promoting the degradation of PI3Kα …


Mass Spectrometry Based Biomarkers For Early Detection Of Hcc Using A Glycoproteomic Approach, Yehia Mechref, Wenjing Peng, Sakshi Gautam, Parisa Ahmadi, Yu Lin, Jianhui Zhu, Jie Zhang, Suyu Liu, Amit G Singal, Neehar D Parikh, David M Lubman Jan 2023

Mass Spectrometry Based Biomarkers For Early Detection Of Hcc Using A Glycoproteomic Approach, Yehia Mechref, Wenjing Peng, Sakshi Gautam, Parisa Ahmadi, Yu Lin, Jianhui Zhu, Jie Zhang, Suyu Liu, Amit G Singal, Neehar D Parikh, David M Lubman

Faculty, Staff and Student Publications

Hepatocellular carcinoma (HCC) is the fourth most common cause of cancer-related mortality worldwide and 80%-90% of HCC develops in patients that have underlying cirrhosis. Better methods of surveillance are needed to increase early detection of HCC and the proportion of patients that can be offered curative therapies. Recent work in novel mass spec-based methods for glycomic and glycopeptide analysis for discovery and confirmation of markers for early detection of HCC versus cirrhosis is reviewed in this chapter. Results from recent work in these fields by several groups and the progress made in developing markers of early HCC which can outperform …


Risk Prediction Of Pancreatic Cancer In Patients With Recent-Onset Hyperglycemia: A Machine-Learning Approach, Wansu Chen, Rebecca K Butler, Eva Lustigova, Suresh T Chari, Anirban Maitra, Jo A Rinaudo, Bechien U Wu Jan 2023

Risk Prediction Of Pancreatic Cancer In Patients With Recent-Onset Hyperglycemia: A Machine-Learning Approach, Wansu Chen, Rebecca K Butler, Eva Lustigova, Suresh T Chari, Anirban Maitra, Jo A Rinaudo, Bechien U Wu

Faculty, Staff and Student Publications

Background: New-onset diabetes (NOD) has been suggested as an early indicator of pancreatic cancer. However, the definition of NOD by the American Diabetes Association requires 2 simultaneous or consecutive elevated glycemic measures. We aimed to apply a machine-learning approach using electronic health records to predict the risk in patients with recent-onset hyperglycemia.

Materials and methods: In this retrospective cohort study, health plan enrollees 50 to 84 years of age who had an elevated (6.5%+) glycated hemoglobin (HbA1c) tested in January 2010 to September 2018 with recent-onset hyperglycemia were identified. A total of 102 potential predictors were extracted. Ten imputation datasets …


A Comparative Analysis Of Radical Cystectomy With Perioperative Chemotherapy, Chemoradiation Therapy, Or Systemic Therapy In Patients With Clinically Advanced Node-Positive Bladder Cancer (Cn2/N3), Harshit Garg, Mukund Bhandari, Furkan Dursun, Michael A Liss, Dharam Kaushik, Robert S Svatek, Ahmed M Mansour Jan 2023

A Comparative Analysis Of Radical Cystectomy With Perioperative Chemotherapy, Chemoradiation Therapy, Or Systemic Therapy In Patients With Clinically Advanced Node-Positive Bladder Cancer (Cn2/N3), Harshit Garg, Mukund Bhandari, Furkan Dursun, Michael A Liss, Dharam Kaushik, Robert S Svatek, Ahmed M Mansour

Faculty, Staff and Student Publications

Introduction: The management of non-metastatic clinically advanced lymph nodal (cN2/N3) bladder cancer (Stage IIIB) could involve radical cystectomy, chemoradiation, or systemic therapy alone. However, a definitive comparison between these approaches is lacking. This study aims to compare the outcomes of patients undergoing radical cystectomy with pelvic lymph node dissection (RC-PLND), chemoradiation therapy (CRT) or systemic therapy (including immunotherapy) (ST) only in patients with stage IIIB bladder cancer.

Materials and methods: A retrospective analysis of the National Cancer Database for patients with stage IIIB urothelial bladder cancer was done from 2004-2019. Patients were classified as Group A: Those who received RC-PLND …


Editorial: Women In Molecular And Cellular Oncology, Petranel T Ferrao, Laura Rosanò, Valeria Poli, Shilpa S Dhar, Ana Paula Lepique Jan 2023

Editorial: Women In Molecular And Cellular Oncology, Petranel T Ferrao, Laura Rosanò, Valeria Poli, Shilpa S Dhar, Ana Paula Lepique

Faculty, Staff and Student Publications

No abstract provided.


Editorial: Women In Molecular And Cellular Oncology, Volume Ii: 2022, Shilpa S Dhar Jan 2023

Editorial: Women In Molecular And Cellular Oncology, Volume Ii: 2022, Shilpa S Dhar

Faculty, Staff and Student Publications

No abstract provided.


A Case Of Successful Treatment Of Recurrent Urinary Tract Infection By Extended-Spectrum Β-Lactamase Producing Klebsiella Pneumoniae Using Oral Lyophilized Fecal Microbiota Transplant, Naomi Bier, Blake Hanson, Zhi-Dong Jiang, Herbert L Dupont, Cesar A Arias, William R Miller Jan 2023

A Case Of Successful Treatment Of Recurrent Urinary Tract Infection By Extended-Spectrum Β-Lactamase Producing Klebsiella Pneumoniae Using Oral Lyophilized Fecal Microbiota Transplant, Naomi Bier, Blake Hanson, Zhi-Dong Jiang, Herbert L Dupont, Cesar A Arias, William R Miller

Faculty, Staff and Student Publications

Recurrent urinary tract infections (UTIs) are a challenging clinical entity that can be frustrating for patient and physician alike. Repeated rounds of antibiotics can select for multidrug-resistant organisms, further complicating care. We describe the successful use of fecal microbiota transplantation (FMT) for the treatment of recurrent extended-spectrum β-lactamase (ESBL)-producing Klebsiella pneumoniae UTIs in a patient with an ileal conduit and urostomy. In the 18 months after FMT, the patient had not experienced new infections with ESBL-producing organisms. The urine and stool microbiomes of the patient were tracked before and post-FMT using 16s RNA sequencing with measurement of α-diversity. Sequencing of …