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Articles 4681 - 4710 of 9784
Full-Text Articles in Genetics and Genomics
The Effect Of Sweeteners In Drosophila Melanogaster's Locomotion., Araceli Francisco
The Effect Of Sweeteners In Drosophila Melanogaster's Locomotion., Araceli Francisco
The International Student Science Fair 2018
This research aims to measure how much locomotion is affected in Drosophila melanogaster considering the alimentation. The experiment was divided in a control group, a group fed with natural sugar and another fed with artificial sugar. The diets were prepared based on standard laboratory food (SLF) by varying the sugar. Several generations were grown. The locomotion was measured through monitors with infrared lasers which calculated the number of times the fly passed through it. They were accustomed to a day and night cycle and were kept under observation for a period of 13 days. As a result, the group that …
Snf1 Cooperates With The Cwi Mapk Pathway To Mediate The Degradation Of Med13 Following Oxidative Stress, Stephen D Willis, David C Stieg, Kai Li Ong, Ravina Shah, Alexandra K. Strich, Julianne H Grose, Katrina F Cooper
Snf1 Cooperates With The Cwi Mapk Pathway To Mediate The Degradation Of Med13 Following Oxidative Stress, Stephen D Willis, David C Stieg, Kai Li Ong, Ravina Shah, Alexandra K. Strich, Julianne H Grose, Katrina F Cooper
Rowan-Virtua School of Osteopathic Medicine Departmental Research
Eukaryotic cells, when faced with unfavorable environmental conditions, mount either pro-survival or pro-death programs. The conserved cyclin C-Cdk8 kinase plays a key role in this decision. Both are members of the Cdk8 kinase module that, along with Med12 and Med13, associate with the core Mediator complex of RNA polymerase II. In Saccharomyces cerevisiae, oxidative stress triggers Med13 destruction, which releases cyclin C into the cytoplasm to promote mitochondrial fission and programmed cell death. The SCFGrr1 ubiquitin ligase mediates Med13 degradation dependent on the cell wall integrity pathway, MAPK Slt2. Here we show that the AMP kinase Snf1 activates a second …
A Humanized Hypertrophic Cardiomyopathy Model To Elucidate Molecular Mechanism In Disease Pathology, Ragavi Vijayakumar, Maxine Hong
A Humanized Hypertrophic Cardiomyopathy Model To Elucidate Molecular Mechanism In Disease Pathology, Ragavi Vijayakumar, Maxine Hong
The International Student Science Fair 2018
Hypertrophic cardiomyopathy (HCM), that clinically manifests as an enlarged heart is a highly prevalent cardiac disorder with propensity towards arrhythmia-induced sudden cardiac death. The mechanism of HCM remains poorly defined, necessitating further understanding of the disease for improved therapeutic strategies. As it is challenging to obtain cardiac biopsies from human subjects, using induced pluripotent stem cells technology, we generated cardiomyocytes (CMs) in a dish from HCM patients. These HCM-CMs presented the clinical manifestation in that they were significantly larger in size in comparison to control (healthy)-CMs. Furthermore, gene expression profiling of cardiac ion channels revealed increased transcripts encoding for calcium …
Lim Protein Ajuba Associates With The Rpa Complex Through Direct Cell Cycle-Dependent Interaction With The Rpa70 Subunit, Sandy Fowler, Pascal Maguin, Sampada Kalan, Diego Loayza
Lim Protein Ajuba Associates With The Rpa Complex Through Direct Cell Cycle-Dependent Interaction With The Rpa70 Subunit, Sandy Fowler, Pascal Maguin, Sampada Kalan, Diego Loayza
Publications and Research
DNA damage response pathways are essential for genome stability and cell survival. Specifically, the ATR kinase is activated by DNA replication stress. An early event in this activation is the recruitment and phosphorylation of RPA, a single stranded DNA binding complex composed of three subunits, RPA70, RPA32 and RPA14. We have previously shown that the LIM protein Ajuba associates with RPA, and that depletion of Ajuba leads to potent activation of ATR. In this study, we provide evidence that the Ajuba-RPA interaction occurs through direct protein contact with RPA70, and that their association is cell cycle-regulated and is reduced upon …
Different Patterns Of Colonization Of Oxalis Alpina In The Sky Islands Of The Sonoran Desert Via Pollen And Seed Flow, Jessica Pérez‐Alquicira, Stephen G. Weller, César A. Domínguez, Francisco E. Molina-Freaner, Olga V. Tsyusko
Different Patterns Of Colonization Of Oxalis Alpina In The Sky Islands Of The Sonoran Desert Via Pollen And Seed Flow, Jessica Pérez‐Alquicira, Stephen G. Weller, César A. Domínguez, Francisco E. Molina-Freaner, Olga V. Tsyusko
Plant and Soil Sciences Faculty Publications
Historical factors such as climatic oscillations during the Pleistocene epoch have dramatically impacted species distributions. Studies of the patterns of genetic structure in angiosperm species using molecular markers with different modes of inheritance contribute to a better understanding of potential differences in colonization and patterns of gene flow via pollen and seeds. These markers may also provide insights into the evolution of reproductive systems in plants. Oxalis alpina is a tetraploid, herbaceous species inhabiting the Sky Island region of the southwestern United States and northern Mexico. Our main objective in this study was to analyze the influence of climatic oscillations …
A Mutation Affecting Polycystin-1 Mediated Heterotrimeric G-Protein Signaling Causes Pkd, Stephen C. Parnell, Brenda S. Magenheimer, Robin L. Maser, Tengis S. Pavlov, Mallory A. Havens, Michelle L. Hastings, Stephen F. Jackson, Christopher J. Ward, Kenneth R. Peterson, Alexander Staruschenko, James P. Calvet
A Mutation Affecting Polycystin-1 Mediated Heterotrimeric G-Protein Signaling Causes Pkd, Stephen C. Parnell, Brenda S. Magenheimer, Robin L. Maser, Tengis S. Pavlov, Mallory A. Havens, Michelle L. Hastings, Stephen F. Jackson, Christopher J. Ward, Kenneth R. Peterson, Alexander Staruschenko, James P. Calvet
Biology Department Faculty Articles
Autosomal dominant polycystic kidney disease (ADPKD) is characterized by the growth of renal cysts that ultimately destroy kidney function. Mutations in the PKD1 and PKD2 genes cause ADPKD. Their protein products, polycystin-1 (PC1) and polycystin-2 (PC2) have been proposed to forma calcium-permeable receptor-channel complex; however the mechanisms by which they function are almost completely unknown. Most mutations in PKD1 are truncating loss-of-function mutations or affect protein biogenesis, trafficking or stability and reveal very little about the intrinsic biochemical properties or cellular functions of PC1. An ADPKD patient mutation (L4132D or DL), resulting in a single amino acid deletion in a …
Characterization Of The Bioluminescent Symbionts From Ceratioids Collected In The Gulf Of Mexico, Lindsay L. Freed
Characterization Of The Bioluminescent Symbionts From Ceratioids Collected In The Gulf Of Mexico, Lindsay L. Freed
HCNSO Student Theses and Dissertations
Anglerfishes are easily one of the most popular deep-sea creatures due to their menacing appearance, extreme sexual dimorphism, parasitic mating approach, and eye catching bioluminescent lure. Unlike most bioluminescent fishes, which intrinsically generate light, female anglerfishes belonging to nine of the 11 families within the suborder Ceratioidei (deep-sea anglerfishes) have developed a symbiotic relationship with bioluminescent bacteria that are housed within the light organs. Previous molecular work had identified symbionts from two anglerfish species as novel and possibly unculturable taxa (Haygood et al., 1992), but nothing more has been revealed about the bioluminecent symbionts of ceratioids. As part of …
Chronic Lymphocytic Leukemia-Derived Il-10 Suppresses Antitumor Immunity., Sara S Alhakeem, Mary K Mckenna, Karine Z Oben, Sunil K Noothi, Jacqueline R Rivas, Gerhard C Hildebrandt, Roger A Fleischman, Vivek M Rangnekar, Natarajan Muthusamy, Subbarao Bondada
Chronic Lymphocytic Leukemia-Derived Il-10 Suppresses Antitumor Immunity., Sara S Alhakeem, Mary K Mckenna, Karine Z Oben, Sunil K Noothi, Jacqueline R Rivas, Gerhard C Hildebrandt, Roger A Fleischman, Vivek M Rangnekar, Natarajan Muthusamy, Subbarao Bondada
Microbiology, Immunology, and Molecular Genetics Faculty Publications
Chronic lymphocytic leukemia (CLL) patients progressively develop an immunosuppressive state. CLL patients have more plasma IL-10, an anti-inflammatory cytokine, than healthy controls. In vitro human CLL cells produce IL-10 in response to BCR cross-linking. We used the transgenic Eμ-T cell leukemia oncogene-1 (
Complete Genome Sequences Of Paenibacillus Larvae Phages Bn12, Dragolir, Kiel007, Leyra, Likha, Pagassa, Pbl1c, And Tadhana, Jamison K. Walker, Bryan D. Merrill, Jordan A. Berg, Aziza Dhalai, Douglas W. Dingman, Chris P. Fajardo, Kiel Graves, Hunter L. Hill, Jared A. Hilton, Cameron Imahara, Bradley K. Knabe, James Mangohig, Josh Monk, Heejin Mun, Ashley M. Payne, Alicia Salisbury, Casey Stamereilers, Kathie Velez, Andy T. Ward, Donald P. Breakwell, Julianne H. Grose, Sandra Hope, Philippos K. Tsourkas
Complete Genome Sequences Of Paenibacillus Larvae Phages Bn12, Dragolir, Kiel007, Leyra, Likha, Pagassa, Pbl1c, And Tadhana, Jamison K. Walker, Bryan D. Merrill, Jordan A. Berg, Aziza Dhalai, Douglas W. Dingman, Chris P. Fajardo, Kiel Graves, Hunter L. Hill, Jared A. Hilton, Cameron Imahara, Bradley K. Knabe, James Mangohig, Josh Monk, Heejin Mun, Ashley M. Payne, Alicia Salisbury, Casey Stamereilers, Kathie Velez, Andy T. Ward, Donald P. Breakwell, Julianne H. Grose, Sandra Hope, Philippos K. Tsourkas
Life Sciences Faculty Research
We present here the complete genomes of eight phages that infect Paenibacillus larvae, the causative agent of American foulbrood in honeybees. Phage PBL1c was originally isolated in 1984 from a P. larvae lysogen, while the remaining phages were isolated in 2014 from bee debris, honeycomb, and lysogens from three states in the USA.
Genomic Dissection Of Bipolar Disorder And Schizophrenia, Including 28 Subphenotypes, Douglas M. Ruderfer, Stephan Ripke, Andrew Mcquillin, James Boocock, Ney Alliey Rodriguez
Genomic Dissection Of Bipolar Disorder And Schizophrenia, Including 28 Subphenotypes, Douglas M. Ruderfer, Stephan Ripke, Andrew Mcquillin, James Boocock, Ney Alliey Rodriguez
School of Medicine Publications
Schizophrenia and bipolar disorder are two distinct diagnoses that share symptomology. Understanding the genetic factors contributing to the shared and disorder-specific symptoms will be crucial for improving diagnosis and treatment. In genetic data consisting of 53,555 cases (20,129 bipolar disorder [BD], 33,426 schizophrenia [SCZ]) and 54,065 controls, we identified 114 genome-wide significant loci implicating synaptic and neuronal pathways shared between disorders. Comparing SCZ to BD (23,585 SCZ, 15,270 BD) identified four genomic regions including one with disorder-independent causal variants and potassium ion response genes as contributing to differences in biology between the disorders. Polygenic risk score (PRS) analyses identified several …
Sources And Fates Of Carbamyl Phosphate: A Labile Energy-Rich Molecule With Multiple Facets., Dashuang Shi, Ljubica Caldovic, Mendel Tuchman
Sources And Fates Of Carbamyl Phosphate: A Labile Energy-Rich Molecule With Multiple Facets., Dashuang Shi, Ljubica Caldovic, Mendel Tuchman
Genomics and Precision Medicine Faculty Publications
Carbamyl phosphate (CP) is well-known as an essential intermediate of pyrimidine and arginine/urea biosynthesis. Chemically, CP can be easily synthesized from dihydrogen phosphate and cyanate. Enzymatically, CP can be synthesized using three different classes of enzymes: (1) ATP-grasp fold protein based carbamyl phosphate synthetase (CPS); (2) Amino-acid kinase fold carbamate kinase (CK)-like CPS (anabolic CK or aCK); and (3) Catabolic transcarbamylase. The first class of CPS can be further divided into three different types of CPS as CPS I, CPS II, and CPS III depending on the usage of ammonium or glutamine as its nitrogen source, and whether
Systematics And Diversification Of The Pantropical Avian Order Coraciiformes, Jenna Merle Mccullough
Systematics And Diversification Of The Pantropical Avian Order Coraciiformes, Jenna Merle Mccullough
Biology ETDs
How and why species diversify is a central theme of evolutionary biology. Species-rich, morphologically diverse, pantropical clades provide rare opportunities to explore questions about drivers of diversification in the tropics. Here, we present the first complete species tree of Coraciiformes (6 families, ~177 species of kingfishers, motmots, bee-eaters, and allies), produced with thousands of ultraconserved elements. We recovered a well-supported tree which shows that there are two clades within Coraciiformes: 1) bee-eaters sister to rollers + ground- rollers and 2) todies sister to motmots + kingfishers. We estimated the biogeographical history of the group, explored bill shape evolution with a …
Lipid Phosphate Phosphatase 3 Regulates Adipocyte Sphingolipid Synthesis, But Not Developmental Adipogenesis Or Diet-Induced Obesity In Mice, Lorenzo Frederico, Liping Yang, Jason Brandon, Manikandan Panchatcharam, Hongmei Ren, Paul Mueller, Manjula Sunkara, Diana Escalante-Alcalde, Andrew J. Morris, Susan S. Smyth
Lipid Phosphate Phosphatase 3 Regulates Adipocyte Sphingolipid Synthesis, But Not Developmental Adipogenesis Or Diet-Induced Obesity In Mice, Lorenzo Frederico, Liping Yang, Jason Brandon, Manikandan Panchatcharam, Hongmei Ren, Paul Mueller, Manjula Sunkara, Diana Escalante-Alcalde, Andrew J. Morris, Susan S. Smyth
Gill Heart & Vascular Institute Faculty Publications
Dephosphorylation of phosphatidic acid (PA) is the penultimate step in triglyceride synthesis. Adipocytes express soluble intracellular PA-specific phosphatases (Lipins) and broader specificity membrane-associated lipid phosphate phosphatases (LPPs) that can also dephosphorylate PA. Inactivation of lipin1 causes lipodystrophy in mice due to defective developmental adipogenesis. Triglyceride synthesis is diminished but not ablated by inactivation of lipin1 in differentiated adipocytes implicating other PA phosphatases in this process. To investigate the possible role of LPPs in adipocyte lipid metabolism and signaling we made mice with adipocyte-targeted inactivation of LPP3 encoded by the Plpp3(Ppap2b) gene. Adipocyte LPP3 deficiency resulted in blunted …
The Zinc Transporter Zipt-7.1 Regulates Sperm Activation In Nematodes, Yanmei Zhao, Chieh-Hsiang Tan, Amber Krauchunas, Andrea Scharf, Nicholas Dietrich, Kurt Warnhoff, Zhiheng Yuan, Marina Druzhinina, Sam Guoping Gu, Long Miao, Andrew Singson, Ronald E Ellis, Kerry Kornfeld
The Zinc Transporter Zipt-7.1 Regulates Sperm Activation In Nematodes, Yanmei Zhao, Chieh-Hsiang Tan, Amber Krauchunas, Andrea Scharf, Nicholas Dietrich, Kurt Warnhoff, Zhiheng Yuan, Marina Druzhinina, Sam Guoping Gu, Long Miao, Andrew Singson, Ronald E Ellis, Kerry Kornfeld
Rowan-Virtua School of Osteopathic Medicine Departmental Research
Sperm activation is a fascinating example of cell differentiation, in which immotile spermatids undergo a rapid and dramatic transition to become mature, motile sperm. Because the sperm nucleus is transcriptionally silent, this transition does not involve transcriptional changes. Although Caenorhabditis elegans is a leading model for studies of sperm activation, the mechanisms by which signaling pathways induce this transformation remain poorly characterized. Here we show that a conserved transmembrane zinc transporter, ZIPT-7.1, regulates the induction of sperm activation in Caenorhabditis nematodes. The zipt-7.1 mutant hermaphrodites cannot self-fertilize, and males reproduce poorly, because mutant spermatids are defective in responding to activating …
Completion Of Dna Replication In Escherichia Coli, Brian Michael Wendel
Completion Of Dna Replication In Escherichia Coli, Brian Michael Wendel
Dissertations and Theses
To maintain genomic integrity, all cells must accurately duplicate their genetic material in order to provide intact and complete copies to each daughter cell following cell division. Successful inheritance of chromosomal information without changing even a single nucleotide requires accurate and robust DNA replication. This requires that cells tightly control replication initiation from the origin(s), processive elongation of the replisome, and the completion of DNA replication by resolving convergent replication forks ensuring that each sequence is duplicated without alteration. Unlike initiation and elongation, the process by which replication forks converge and are resolved into two discrete, inheritable DNA molecules is …
Polygenic Scores For Metabolic Traits And Related Drug Prescriptions In The Michigan Genomics Initiative, Samuel K. Handelman, Xiaomeng Du, Yanhua H. Chen, Elizabeth K. Speliotes
Polygenic Scores For Metabolic Traits And Related Drug Prescriptions In The Michigan Genomics Initiative, Samuel K. Handelman, Xiaomeng Du, Yanhua H. Chen, Elizabeth K. Speliotes
Biology and Medicine Through Mathematics Conference
No abstract provided.
Modeling Stochastic Viral Evolution: A Multiscale Wright Fisher Model, Marco Hamins-Puertolas
Modeling Stochastic Viral Evolution: A Multiscale Wright Fisher Model, Marco Hamins-Puertolas
Biology and Medicine Through Mathematics Conference
No abstract provided.
Acetic Acid Induces Sch9p-Dependent Translocation Of Isc1p From The Endoplasmic Reticulum Into Mitochondria, António Rego, Katrina F Cooper, Justin Snider, Yusuf A Hannun, Vítor Costa, Manuela Côrte-Real, Susana R Chaves
Acetic Acid Induces Sch9p-Dependent Translocation Of Isc1p From The Endoplasmic Reticulum Into Mitochondria, António Rego, Katrina F Cooper, Justin Snider, Yusuf A Hannun, Vítor Costa, Manuela Côrte-Real, Susana R Chaves
Rowan-Virtua School of Osteopathic Medicine Departmental Research
Changes in sphingolipid metabolism have been linked to modulation of cell fate in both yeast and mammalian cells. We previously assessed the role of sphingolipids in cell death regulation using a well characterized yeast model of acetic acid-induced regulated cell death, finding that Isc1p, inositol phosphosphingolipid phospholipase C, plays a pro-death role in this process. Indeed, isc1∆ mutants exhibited a higher resistance to acetic acid associated with reduced mitochondrial alterations. Here, we show that Isc1p is regulated by Sch9p under acetic acid stress, since both single and double mutants lacking Isc1p or/and Sch9p have the same resistant phenotype, and SCH9 …
Loss Of Function Of Gene X Protects Against Α-Dicarbonyl Stress Through The Skn-1 Pathway In C. Elegans, Austin Lim
Loss Of Function Of Gene X Protects Against Α-Dicarbonyl Stress Through The Skn-1 Pathway In C. Elegans, Austin Lim
Dissertations, Masters Theses, Capstones, and Culminating Projects
Diabetes mellitus and Parkinson’s Disease (PD) are debilitating diseases that are increasing in prevalence worldwide. One potential cause of these diseases is the accumulation of advanced glycation end products (AGEs), which are macromolecules that cause irreversible damages. AGEs are a diverse group of highly oxidative byproducts produced from α-dicarbonyl compounds (α-dcs), which are highly reactive molecules that bind indiscriminately to protein and DNA and, are regulated by a conserved glyoxalase system (GLO1 and DJ-1) in humans. Utilizing the conserved glyoxalase system, we were able to establish within a C. elegans model that when this glyoxalase system is impaired, …
Borrelia Burgdorferi Spovg Dna- And Rna-Binding Protein Modulates The Physiology Of The Lyme Disease Spirochete, Christina R. Savage, Brandon L. Jutras, Aaron Bestor, Kit Tilly, Patricia A. Rosa, Yvonne Tourand, Philip E. Stewart, Catherine A. Brissette, Brian Stevenson
Borrelia Burgdorferi Spovg Dna- And Rna-Binding Protein Modulates The Physiology Of The Lyme Disease Spirochete, Christina R. Savage, Brandon L. Jutras, Aaron Bestor, Kit Tilly, Patricia A. Rosa, Yvonne Tourand, Philip E. Stewart, Catherine A. Brissette, Brian Stevenson
Microbiology, Immunology, and Molecular Genetics Faculty Publications
The SpoVG protein of Borrelia burgdorferi, the Lyme disease spirochete, binds to specific sites of DNA and RNA. The bacterium regulates transcription of spoVG during the natural tick-mammal infectious cycle and in response to some changes in culture conditions. Bacterial levels of spoVG mRNA and SpoVG protein did not necessarily correlate, suggesting that posttranscriptional mechanisms also control protein levels. Consistent with this, SpoVG binds to its own mRNA, adjacent to the ribosome-binding site. SpoVG also binds to two DNA sites in the glpFKD operon and to two RNA sites in glpFKD mRNA; that operon encodes genes necessary for glycerol catabolism …
Stability Of The Human Faecal Microbiome In A Cohort Of Adult Men, Raaj S. Mehta, David A. Drew, Jason Lloyd-Price, Ayshwarya Subramaian, Paul Lochhead, Amit D. Joshi, Kerry L. Ivey, Hamed Khalili, Gordon T. Brown, Casey Dulong, Mingyang Song, Long H. Nguyen, Himel Mallick, Eric B. Rimm, Jacques Izard, Curtis Huttenhower, Andrew T. Chan, Galeb S. Abu-Ali
Stability Of The Human Faecal Microbiome In A Cohort Of Adult Men, Raaj S. Mehta, David A. Drew, Jason Lloyd-Price, Ayshwarya Subramaian, Paul Lochhead, Amit D. Joshi, Kerry L. Ivey, Hamed Khalili, Gordon T. Brown, Casey Dulong, Mingyang Song, Long H. Nguyen, Himel Mallick, Eric B. Rimm, Jacques Izard, Curtis Huttenhower, Andrew T. Chan, Galeb S. Abu-Ali
Department of Food Science and Technology: Faculty Publications
Characterizing the stability of the gut microbiome is important to exploit it as a therapeutic target and diagnostic biomarker. We metagenomically and metatranscriptomically sequenced the faecal microbiomes of 308 participants in the Health Professionals Follow-Up Study. Participants provided four stool samples—one pair collected 24–72 h apart and a second pair ~6 months later. Within-person taxonomic and functional variation was consistently lower than between-person variation over time. In contrast, metatranscriptomic profiles were comparably variable within and between subjects due to higher within-subject longitudinal variation. Metagenomic instability accounted for ~74% of corresponding metatranscriptomic instability. The rest was probably attributable to sources such …
Genetic Sequencing For Surveillance Of Drug Resistance In Tuberculosis In Highly Endemic Countries: A Multi-Country Population-Based Surveillance Study, Matteo Zignol Md, Andrea Maurizio Cabibbe, Anna S. Dean, Philippe Glaziou, Natavan Alikhanova, Cecilia Ama, Sönke Andres, Anna Barbova, Rumina Hasan, Zahra Hasan
Genetic Sequencing For Surveillance Of Drug Resistance In Tuberculosis In Highly Endemic Countries: A Multi-Country Population-Based Surveillance Study, Matteo Zignol Md, Andrea Maurizio Cabibbe, Anna S. Dean, Philippe Glaziou, Natavan Alikhanova, Cecilia Ama, Sönke Andres, Anna Barbova, Rumina Hasan, Zahra Hasan
Department of Pathology and Laboratory Medicine
Background: In many countries, regular monitoring of the emergence of resistance to anti-tuberculosis drugs is hampered by the limitations of phenotypic testing for drug susceptibility. We therefore evaluated the use of genetic sequencing for surveillance of drugresistance in tuberculosis.
Methods: Population-level surveys were done in hospitals and clinics in seven countries (Azerbaijan, Bangladesh, Belarus, Pakistan, Philippines, South Africa, and Ukraine) to evaluate the use of genetic sequencing to estimate the resistance of Mycobacterium tuberculosisisolates to rifampicin, isoniazid, ofloxacin, moxifloxacin, pyrazinamide, kanamycin, amikacin, and capreomycin. For each drug, we assessed the accuracy of genetic sequencing by a comparison of the adjusted …
Population Genetics And Bumble Bee Conservation: Saving Species By Thinking Small, Cady Greenslit
Population Genetics And Bumble Bee Conservation: Saving Species By Thinking Small, Cady Greenslit
Lawrence University Honors Projects
Pollinators have experienced a severe decline over the last few decades, and this includes bumble bee populations (g. Bombus). Bumble bees are important native pollinators, and here I investigate the health of local populations with molecular tools. The field of conservation genetics has created useful methodology for investigating the health and informing management strategies of threatened populations. This work investigates and describes the applications of population genetics, which uses span across the board. These applications are then brought back into the context of bumble bee conservation, and how they fit into the experimental plan I originally designed. I designed …
Recta: Regulon Identification Based On Comparative Genomics And Transcriptomics Analysis, Xin Chen, Anjun Ma, Adam Mcdermaid, Hanyuan Zhang, Chao Liu, Huansheng Cao, Qin Ma
Recta: Regulon Identification Based On Comparative Genomics And Transcriptomics Analysis, Xin Chen, Anjun Ma, Adam Mcdermaid, Hanyuan Zhang, Chao Liu, Huansheng Cao, Qin Ma
School of Computing: Faculty Publications
Regulons, which serve as co-regulated gene groups contributing to the transcriptional regulation of microbial genomes, have the potential to aid in understanding of underlying regulatory mechanisms. In this study, we designed a novel computational pipeline, regulon identification based on comparative genomics and transcriptomics analysis (RECTA), for regulon prediction related to the gene regulatory network under certain conditions. To demonstrate the effectiveness of this tool, we implemented RECTA on Lactococcus lactis MG1363 data to elucidate acid-response regulons. A total of 51 regulons were identified, 14 of which have computational-verified significance. Among these 14 regulons, five of them were computationally predicted to …
Transcriptional Profiling Reveals Extraordinary Diversity Among Skeletal Muscle Tissues, Erin E. Terry, Xiping Zhang, Christy Hoffmann, Laura D. Hughes, Scott A. Lewis, Jiajia Li, Matthew J. Wallace, Lance A. Riley, Collin M. Douglas, Miguel A. Gutierrez-Monreal, Nicholas F. Lahens, Ming C. Gong, Francisco H. Andrade, Karyn A. Esser, Michael E. Hughes
Transcriptional Profiling Reveals Extraordinary Diversity Among Skeletal Muscle Tissues, Erin E. Terry, Xiping Zhang, Christy Hoffmann, Laura D. Hughes, Scott A. Lewis, Jiajia Li, Matthew J. Wallace, Lance A. Riley, Collin M. Douglas, Miguel A. Gutierrez-Monreal, Nicholas F. Lahens, Ming C. Gong, Francisco H. Andrade, Karyn A. Esser, Michael E. Hughes
Physiology Faculty Publications
Skeletal muscle comprises a family of diverse tissues with highly specialized functions. Many acquired diseases, including HIV and COPD, affect specific muscles while sparing others. Even monogenic muscular dystrophies selectively affect certain muscle groups. These observations suggest that factors intrinsic to muscle tissues influence their resistance to disease. Nevertheless, most studies have not addressed transcriptional diversity among skeletal muscles. Here we use RNAseq to profile mRNA expression in skeletal, smooth, and cardiac muscle tissues from mice and rats. Our data set, MuscleDB, reveals extensive transcriptional diversity, with greater than 50% of transcripts differentially expressed among skeletal muscle tissues. We detect …
Deletion Of Endo-Β-1,4-Xylanase Vmxyl1 Impacts The Virulence Of Valsa Mali In Apple Tree, Chunlei Yu, Ting Li, Xiangpeng Shi, Muhammad Saleem, Baohua Li, Wenxing Liang, Caixia Wang
Deletion Of Endo-Β-1,4-Xylanase Vmxyl1 Impacts The Virulence Of Valsa Mali In Apple Tree, Chunlei Yu, Ting Li, Xiangpeng Shi, Muhammad Saleem, Baohua Li, Wenxing Liang, Caixia Wang
Plant and Soil Sciences Faculty Publications
Valsa mali, a parasitic fungus, is a destructive pathogen of apple tree that causes heavy economic losses in China. The pathogen secretes various cell wall-degrading enzymes (CWDEs) that degrade plant cell-wall components, and thus facilitate its entry into host cells. Therefore, functional analysis of the genes encoding CWDEs is necessary to understand virulence of V. mali toward apple tree. Here, we identified and cloned an endo-β-1,4-xylanase gene, VmXyl1 in V. mali. The full-length cDNA of VmXyl1 is 1626 bp containing 5′- and 3′-non-coding regions, as well an open reading frame of 1320 bp that encodes a protein with …
Population Structure, Demographic History, And Environmental Niche Of The Sand Fly Disease Vector Lutzomyia Shannoni (Dyar) (Diptera: Psychodidae) In The U.S., Mexico, And Colombia, Matthew E. Wolkoff
Population Structure, Demographic History, And Environmental Niche Of The Sand Fly Disease Vector Lutzomyia Shannoni (Dyar) (Diptera: Psychodidae) In The U.S., Mexico, And Colombia, Matthew E. Wolkoff
Biology Theses
Lutzomyia shannoni (Dyar, 1929) (Diptera: Psychodidae) is the only known sand fly vector of vesicular stomatitis virus, a putative leishmaniasis vector, and also boasts the widest distribution of any sand fly in the New World. Research on Lu. shannoni in Central and South America has revealed genetically divergent subpopulations; however, tentative analysis of Lu. shannoni in the U.S. has failed to detect any significant population structure, even between specimens collected from highly disparate localities.
The present study used four molecular markers to more closely investigate the population structure of Lu. shannoni in the U.S., and assess the species’ relationships with …
Investigating The Role Of Genomic Variation In Susceptibility To Environmental Chemicals Across Populations, Lindsay Adrian Holden
Investigating The Role Of Genomic Variation In Susceptibility To Environmental Chemicals Across Populations, Lindsay Adrian Holden
Dissertations and Theses
No two individuals are identical. This is true at the genetic level and at the phenotypic level. One of the traits that varies between populations is toxicant susceptibility: some individuals are sensitive to the effects of environmental chemical exposure, and others are resistant. This body of work aims to address the impact of genomic copy number variants (CNV)--large (>1 Kb) duplications or deletions across the genome--on the toxicant-susceptibility phenotype.
Herein copy number variants were characterized across three commonly used laboratory strains of zebrafish (Danio rerio) and mRNA expression phenotypes were identified in the same strains. It was found that …
Analysis Of The Immunological Biomarker Profile During Acute Zika Virus Infection Reveals The Overexpression Of Cxcl10, A Chemokine Linked To Neuronal Damage., Felipe Gomes Naveca, Gemilson Soares Pontes, Aileen Yu-Hen Chang, George Allan Villarouco Da Silva, Valdinete Alves Do Nascimento, Dana Cristina Da Silva Monteiro, +Several Additional Authors
Analysis Of The Immunological Biomarker Profile During Acute Zika Virus Infection Reveals The Overexpression Of Cxcl10, A Chemokine Linked To Neuronal Damage., Felipe Gomes Naveca, Gemilson Soares Pontes, Aileen Yu-Hen Chang, George Allan Villarouco Da Silva, Valdinete Alves Do Nascimento, Dana Cristina Da Silva Monteiro, +Several Additional Authors
Medicine Faculty Publications
BACKGROUND: Infection with Zika virus (ZIKV) manifests in a broad spectrum of disease ranging from mild illness to severe neurological complications and little is known about Zika immunopathogenesis.
OBJECTIVES: To define the immunologic biomarkers that correlate with acute ZIKV infection.
METHODS: We characterized the levels of circulating cytokines, chemokines, and growth factors in 54 infected patients of both genders at five different time points after symptom onset using microbeads multiplex immunoassay; comparison to 100 age-matched controls was performed for statistical analysis and data mining.
FINDINGS: ZIKV-infected patients present a striking systemic inflammatory response with high levels of pro-inflammatory mediators. Despite …
Cannibalism In Blepharisma Americanum : A Genome Comparison, Bethaney Gulla-Devaney
Cannibalism In Blepharisma Americanum : A Genome Comparison, Bethaney Gulla-Devaney
Theses, Dissertations, and Projects
Cannibalism is a process in which an organism consumes a member of its own species. The process is intraspecies while predation is interspecies. Unlike predation, literature on the process of cannibalism is largely understudied, particularly in the microbial world. This study focuses on Blepharisma americanum, a species of eukaryotic microbe. In this species, cannibalism can be confirmed visually by a giant cannibal cell digesting victim cells within the food vacuoles. Cannibalism is regularly practiced in B. americanum and I attempt to elucidate the genetic differences between life states: cannibal and vegetative cells. I investigate using bioinformatic approaches: whole transcriptome amplification, …