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Articles 91 - 105 of 105
Full-Text Articles in Life Sciences
Loss Of Abhd5 Promotes Colorectal Tumor Development And Progression By Inducing Aerobic Glycolysis And Epithelial-Mesenchymal Transition, Juanjuan Ou, Hongming Miao, Yinyan Ma, Feng Guo, Jia Deng, Xing Wei, Jie Zhou, Ganfeng Xie, Hang Shi, Bingzhong Xue, Houjie Liang, Liqing Yu
Loss Of Abhd5 Promotes Colorectal Tumor Development And Progression By Inducing Aerobic Glycolysis And Epithelial-Mesenchymal Transition, Juanjuan Ou, Hongming Miao, Yinyan Ma, Feng Guo, Jia Deng, Xing Wei, Jie Zhou, Ganfeng Xie, Hang Shi, Bingzhong Xue, Houjie Liang, Liqing Yu
Biology Faculty Publications
How cancer cells shift metabolism to aerobic glycolysis is largely unknown. Here, we show that deficiency of a/b-hydrolase domain-containing 5 (Abhd5), an intracellular lipolytic activator that is also known as comparative gene identification 58 (CGI-58), promotes this metabolic shift and enhances malignancies of colorectal carcinomas (CRCs). Silencing of Abhd5 in normal fibroblasts induces malignant transformation. Intestine-specific knockout of Abhd5 in ApcMin/+ mice robustly increases tumorigenesis and malignant transformation of adenomatous polyps. In colon cancer cells, Abhd5 deficiency induces epithelial-mesenchymal transition by suppressing the AMPKa-p53 pathway, which is attributable to increased aerobic glycolysis. In human CRCs, Abhd5 expression falls substantially and …
Structures Of Darunavir-Resistant Hiv-1 Protease Mutant Reveal Atypical Binding Of Darunavir To Wide Open Flaps, Ying Zhang, Yu-Chung E. Chang, John M. Louis, Yuan Fang Wang, Robert W. Harrison, Irene Weber
Structures Of Darunavir-Resistant Hiv-1 Protease Mutant Reveal Atypical Binding Of Darunavir To Wide Open Flaps, Ying Zhang, Yu-Chung E. Chang, John M. Louis, Yuan Fang Wang, Robert W. Harrison, Irene Weber
Biology Faculty Publications
The molecular basis for high resistance to clinical inhibitors of HIV-1 protease (PR) was examined for the variant designated PRP51 that was selected for resistance to darunavir (DRV). High resolution crystal structures of PRP51 with the active site D25N mutation revealed a ligand-free form and an inhibitor-bound form showing a unique binding site and orientation for DRV. This inactivating mutation is known to increase the dimer dissociation constant and decrease DRV affinity of PR. The PRP51-D25N dimers were in the open conformation with widely separated flaps, as reported for other highly resistant variants. PRP51-D25N dimer bound two DRV molecules and …
Immunomodulatory Activity Of Red Ginseng Against Influenza A Virus Infection, Jong Seok Lee, Hye Suk Hwang, Eun-Ju Ko, Yu-Na Lee, Young-Man Kwon, Min-Chul Kim, Sang-Moo Kang
Immunomodulatory Activity Of Red Ginseng Against Influenza A Virus Infection, Jong Seok Lee, Hye Suk Hwang, Eun-Ju Ko, Yu-Na Lee, Young-Man Kwon, Min-Chul Kim, Sang-Moo Kang
Biology Faculty Publications
Ginseng herbal medicine has been known to have beneficial effects on improving human health. We investigated whether red ginseng extract (RGE) has preventive effects on influenza A virus infection in vivo and in vitro. RGE was found to improve survival of human lung epithelial cells upon influenza virus infection. Also, RGE treatment reduced the expression of pro-inflammatory genes (IL-6, IL-8) probably in part through interference with the formation of reactive oxygen species by influenza A virus infection. Long-term oral administration of mice with RGE showed multiple immunomodulatory effects such as stimulating antiviral cytokine IFN-γ production after influenza A virus infection. …
Eccentric Contractions Disrupt Fkbp12 Content In Mouse Skeletal Muscle, Cory W. Baumann, Russell George Rogers Iii, Nidhi Gahlot, Chris Ingalls
Eccentric Contractions Disrupt Fkbp12 Content In Mouse Skeletal Muscle, Cory W. Baumann, Russell George Rogers Iii, Nidhi Gahlot, Chris Ingalls
Biology Faculty Publications
Strength deficits associated with eccentric contraction-induced muscle injury stem, in part, from impaired voltage-gated sarcoplasmic reticulum (SR) Ca2+ release. FKBP12 is a 12-kD immunophilin known to bind to the SR Ca2+ release channel (ryanodine receptor, RyR1) and plays an important role in excitation-contraction coupling. To assess the effects of eccentric contractions on FKBP12 content, we measured anterior crural muscle (tibialis anterior [TA], extensor digitorum longus [EDL], extensor hallucis longus muscles) strength and FKBP12 content in pellet and supernatant fractions after centrifugation via immunoblotting from mice before and after a single bout of either 150 eccentric or concentric contractions. There were …
The Dry Box And C-Terminal Domain Of The Human Cytomegalovirus Us27 Gene Product Play A Role In Promoting Cell Growth And Survival, C C. Tu, Juliet Spencer
The Dry Box And C-Terminal Domain Of The Human Cytomegalovirus Us27 Gene Product Play A Role In Promoting Cell Growth And Survival, C C. Tu, Juliet Spencer
Biology Faculty Publications
Human cytomegalovirus (HCMV) is a widespread pathogen that can lay dormant in healthy individuals and establish lifelong latent infection. This successful co-existence is facilitated by a number of viral gene products that manipulate host cellular functions and immune responses. Among these immunomodulatory genes are four G-protein coupled receptors (GPCRs) encoded by HCMV, designated US27, US28, UL33, and UL78. Studies have shown the US28 gene product to be a functional chemokine receptor that signals both constitutively and in a ligand-dependent manner, resulting in a wide range of cellular effects. In previous work, we have found that US27 expression results in at …
Cmvil-10 Stimulates The Invasive Potential Of Mda-Mb-231 Breast Cancer Cells, Cendy Valle Oseguera, Juliet Spencer
Cmvil-10 Stimulates The Invasive Potential Of Mda-Mb-231 Breast Cancer Cells, Cendy Valle Oseguera, Juliet Spencer
Biology Faculty Publications
Cancer is the result of unregulated cell growth that leads to tumor formation, and in many cases, metastases. Although there are several risk factors associated with cancer, one area that remains poorly understood is the impact of infectious disease. Human cytomegalovirus (HCMV) is a member of the herpesvirus family that is highly prevalent in the population. HCMV usually causes clinical disease only in immune compromised individuals, but recent evidence suggests that HCMV may be strongly associated with some forms of cancer, particularly glioblastoma and breast cancer. We investigated the possibility that cmvIL-10, a viral cytokine with homology to human IL-10 …
Lack Of Quantitative Training Among Early-Career Ecologists: A Survey Of The Problem And Potential Solutions, F. Barraquand, T. G. Ezard, P. Søgaard Jørgensen, Naupaka B. Zimmerman, S. Chamberlain, R. Salguero-Gómez, T. J. Curran, T. Poisot
Lack Of Quantitative Training Among Early-Career Ecologists: A Survey Of The Problem And Potential Solutions, F. Barraquand, T. G. Ezard, P. Søgaard Jørgensen, Naupaka B. Zimmerman, S. Chamberlain, R. Salguero-Gómez, T. J. Curran, T. Poisot
Biology Faculty Publications
Proficiency in mathematics and statistics is essential to modern ecological science, yet few studies have assessed the level of quantitative training received by ecologists. To do so, we conducted an online survey. The 937 respondents were mostly early-career scientists who studied biology as undergraduates. We found a clear self-perceived lack of quantitative training: 75% were not satisfied with their understanding of mathematical models; 75% felt that the level of mathematics was “too low” in their ecology classes; 90% wanted more mathematics classes for ecologists; and 95% more statistics classes. Respondents thought that 30% of classes in ecology-related degrees should be …
The Unseen World: Environmental Microbial Sequencing And Identification Methods For Ecologists, Naupaka B. Zimmerman, J. Izard, C. Klatt, J. Zhou, E. Aronson
The Unseen World: Environmental Microbial Sequencing And Identification Methods For Ecologists, Naupaka B. Zimmerman, J. Izard, C. Klatt, J. Zhou, E. Aronson
Biology Faculty Publications
Microorganisms inhabit almost every environment, comprise the majority of diversity on Earth, are important in biogeochemical cycling, and may be vital to ecosystem responses to large-scale climatic change. In recent years, ecologists have begun to use rapidly advancing molecular techniques to address questions about microbial diversity, biogeography, and responses to environmental change. Studies of microbes in the environment generally focus on three broad objectives: determining which organisms are present, what their functional capabilities are, and which are active at any given time. However, comprehending the range of methodologies currently in use can be daunting. To provide an overview of environmental …
Biotic Mechanisms Of Community Stability Shift Along A Precipitation Gradient, Lauren M. Hallett, Joanna S. Hsu, Elisa E. Cleland, Scott L. Collins, Timothy L. Dickson, Emily C. Farrer, Laureano A. Gherardi, Katherine L. Gross, Richard J. Hobbs, Laura Turnball, Katharine N. Suding
Biotic Mechanisms Of Community Stability Shift Along A Precipitation Gradient, Lauren M. Hallett, Joanna S. Hsu, Elisa E. Cleland, Scott L. Collins, Timothy L. Dickson, Emily C. Farrer, Laureano A. Gherardi, Katherine L. Gross, Richard J. Hobbs, Laura Turnball, Katharine N. Suding
Biology Faculty Publications
Understanding how biotic mechanisms confer stability in variable environments is a fundamental quest in ecology, and one that is becoming increasingly urgent with global change. Several mechanisms, notably a portfolio effect associated with species richness,compensatory dynamics generated by negative species covariance and selection for stable dominant species populations can increase the stability of the overall community. While the importance of these mechanisms is debated, few studies have contrasted their importance in an environmental context. We analyzed nine long-term data sets of grassland species compositiont o investigate how two key environmental factors, precipitation amount and variability, may directly influence community stability …
Sarpa Salpa Herbivory On Shallow Reaches Of Posidonia Oceanica Beds, Latina Steele, Kelly M. Darnell, Just Cebrián, Jose Luis Sanchez-Lizaso
Sarpa Salpa Herbivory On Shallow Reaches Of Posidonia Oceanica Beds, Latina Steele, Kelly M. Darnell, Just Cebrián, Jose Luis Sanchez-Lizaso
Biology Faculty Publications
Sarpa salpa herbivory on shallow reaches of Posidonia oceanica beds.— Here, we examined the temporal and small–scale spatial variability of grazing by the herbivorous fish Sarpa salpa on shallow beds of the temperate seagrass Posidonia oceanica. Herbivory intensity expressed as the percent of leaf area taken by fish bites was higher in September 2006 than in February 2007, and at 0.5 m than at 1.5 m during both sampling times. All S. salpa feeding at the shallow locations studied were juveniles, with bite sizes ranging from 0.03 to 0.62 cm2. Juveniles feeding at 1.5 m were larger in February 2007 …
Genotyping-By-Sequencing For Populus Population Genomics: An Assessment Of Genome Sampling Patterns And Filtering Approaches, M. Schilling, Paul G. Wolf, A. M. Duffy, H. S. Rai, C. A. Rowe, B. A. Richardson, K. E. Mock
Genotyping-By-Sequencing For Populus Population Genomics: An Assessment Of Genome Sampling Patterns And Filtering Approaches, M. Schilling, Paul G. Wolf, A. M. Duffy, H. S. Rai, C. A. Rowe, B. A. Richardson, K. E. Mock
Biology Faculty Publications
Continuing advances in nucleotide sequencing technology are inspiring a suite of genomic approaches in studies of natural populations. Researchers are faced with data management and analytical scales that are increasing by orders of magnitude. With such dramatic advances comes a need to understand biases and error rates, which can be propagated and magnified in large-scale data acquisition and processing. Here we assess genomic sampling biases and the effects of various population-level data filtering strategies in a genotyping-by-sequencing (GBS) protocol. We focus on data from two species of Populus, because this genus has a relatively small genome and is emerging …
Production Of Destruxins From Metarhizium Spp. Fungi In Artificial Medium And In Endophytically Colonized Cowpea Plants, P. S. Golo, D. R. Gardner, Michelle M. Grilley, Jon Y. Takemoto, S. B. Krasnoff, M. S. Pires, E. K. K. Férnandes, V. R. Bittencourt, Donald W. Roberts
Production Of Destruxins From Metarhizium Spp. Fungi In Artificial Medium And In Endophytically Colonized Cowpea Plants, P. S. Golo, D. R. Gardner, Michelle M. Grilley, Jon Y. Takemoto, S. B. Krasnoff, M. S. Pires, E. K. K. Férnandes, V. R. Bittencourt, Donald W. Roberts
Biology Faculty Publications
Destruxins (DTXs) are cyclic depsipeptides produced by many Metarhizium isolates that have long been assumed to contribute to virulence of these entomopathogenic fungi. We evaluated the virulence of 20 Metarhizium isolates against insect larvae and measured the concentration of DTXs A, B, and E produced by these same isolates in submerged (shaken) cultures. Eight of the isolates (ARSEF 324, 724, 760, 1448, 1882, 1883, 3479, and 3918) did not produce DTXs A, B, or E during the five days of submerged culture. DTXs were first detected in culture medium at 2–3 days in submerged culture. Galleria mellonella and Tenebrio molitor …
Revision Of Anacaena Thomson, 1859 Xi. Republic Of The Philippines (Coleoptera: Hydrophilidae), Hendrik Freitag
Revision Of Anacaena Thomson, 1859 Xi. Republic Of The Philippines (Coleoptera: Hydrophilidae), Hendrik Freitag
Biology Faculty Publications
The species of Anacaena THOMSON, 1859 (Coleoptera: Hydrophilidae) of the Republic of the Philippines are revised. Fifteen new species are described: Anacaena albay sp.n., A. amplocomata sp.n., A. apo sp.n., A. balabag sp.n., A. cordillera sp.n., A. davao sp.n., A. destructa sp.n., A. emergens sp.n., A. hemisphaerica sp.n., A. levistriata sp.n., A. philippina sp.n., A. princesa sp.n., A. quezona sp.n., A. sulcata sp.n., and A. zamboangana. All species are endemic to the Philippines, twelve are aquatic, the habitat of three species is unknown. All Philippine species are morphologically similar to other species of the eastern Oriental Region and probably do …
De Novo Assembly And Analysis Of The Northern Leopard Frog Rana Pipiens Transcriptome, Matthew K. Christenson, Andrew J. Trease, Lakshmi-Prasad Potluri, Andrew Jezewski, Vincent M. Davis, Lindsey A. Knight, Alan Kolok, Paul H. Davis
De Novo Assembly And Analysis Of The Northern Leopard Frog Rana Pipiens Transcriptome, Matthew K. Christenson, Andrew J. Trease, Lakshmi-Prasad Potluri, Andrew Jezewski, Vincent M. Davis, Lindsey A. Knight, Alan Kolok, Paul H. Davis
Biology Faculty Publications
The northern leopard frog Rana (Lithobates) pipiens is an important animal model, being used extensively in cancer, neurology, physiology, and biomechanical studies. R. pipiens is a native North American frog whose range extends from northern Canada to southwest United States, but over the past few decades its populations have declined significantly and is now considered uncommon in large portions of the United States and Canada. To aid in the study and conservation of R. pipiens, this paper describes the first R. pipiens transcriptome. The R. pipiens transcriptome was annotated using Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), …
A Mega-Diverse Water Beetle Genus (Coleoptera: Hydraenidae: Hydraena Kugelann) Commonly Overlooked In Southeast Asia And Its Potential Use For Environmental Biomonitoring, Hendrik Freitag
Biology Faculty Publications
This study summarizes the current knowledge of the water beetle genus Hydraena Kugelann in Southeast Asia. The surprising species diversity and endemism rates in Hydraenopsis Janssens, the only subgenus present in Southeast Asia, are discussed. Data of five published Hydraena surveys from the Philippines and Singapore are used to evaluate species richness and the occurrence of species assemblages that are subject to the presence and quality of forests. Species richness was found to be generally higher in old grown forests. Some species appeared to be confined to near-natural forests. The denomination of indicator species is impeded by adequate sampling data, …