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Articles 1 - 6 of 6
Full-Text Articles in Medicine and Health Sciences
Enterotoxin Preconditioning Restores Calcium-Sensing Receptor-Mediated Cytostasis In Colon Cancer Cells, Giovanni Mario Pitari, Jieru E. Lin, Fawad J. Shah, Wilhelm J. Lubbe, David Zuzga, Peng Li, Stephanie Schulz, Scott A Waldman
Enterotoxin Preconditioning Restores Calcium-Sensing Receptor-Mediated Cytostasis In Colon Cancer Cells, Giovanni Mario Pitari, Jieru E. Lin, Fawad J. Shah, Wilhelm J. Lubbe, David Zuzga, Peng Li, Stephanie Schulz, Scott A Waldman
Department of Pharmacology and Experimental Therapeutics Faculty Papers
Guanylyl cyclase C (GCC), the receptor for diarrheagenic bacterial heat-stable enterotoxins (STs), inhibits colorectal cancer cell proliferation by co-opting Ca(2+) as the intracellular messenger. Similarly, extracellular Ca(2+) (Ca(2+)(o)) opposes proliferation and induces terminal differentiation in intestinal epithelial cells. In that context, human colon cancer cells develop a phenotype characterized by insensitivity to cytostasis imposed by Ca(2+)(o). Here, preconditioning with ST, mediated by GCC signaling through cyclic nucleotide-gated channels, restored Ca(2+)(o)-dependent cytostasis, reflecting posttranscriptional regulation of calcium-sensing receptors (CaRs). ST-induced GCC signaling deployed CaRs to the surface of human colon cancer cells, whereas elimination of GCC signaling in mice nearly abolished …
A Central Function For Perlecan In Skeletal Muscle And Cardiovascular Development, Jason J. Zoeller, Angela Mcquillan, John Whitelock, Shiu-Ying Ho, Renato V. Iozzo
A Central Function For Perlecan In Skeletal Muscle And Cardiovascular Development, Jason J. Zoeller, Angela Mcquillan, John Whitelock, Shiu-Ying Ho, Renato V. Iozzo
Department of Pathology, Anatomy, and Cell Biology Faculty Papers
Perlecan's developmental functions are difficult to dissect in placental animals because perlecan disruption is embryonic lethal. In contrast to mammals, cardiovascular function is not essential for early zebrafish development because the embryos obtain adequate oxygen by diffusion. In this study, we use targeted protein depletion coupled with protein-based rescue experiments to investigate the involvement of perlecan and its C-terminal domain V/endorepellin in zebrafish development. The perlecan morphants show a severe myopathy characterized by abnormal actin filament orientation and disorganized sarcomeres, suggesting an involvement of perlecan in myopathies. In the perlecan morphants, primary intersegmental vessel sprouts, which develop through angiogenesis, fail …
A Distinct Role For B1b Lymphocytes In T Cell-Independent Immunity, Kishore R. Alugupalli
A Distinct Role For B1b Lymphocytes In T Cell-Independent Immunity, Kishore R. Alugupalli
Department of Microbiology and Immunology Faculty Papers
Pathogenesis of infectious disease is not only determined by the virulence of the microbe but also by the immune status of the host. Vaccination is the most effective means to control infectious diseases. A hallmark of the adaptive immune system is the generation of B cell memory, which provides a long-lasting protective antibody response that is central to the concept of vaccination. Recent studies revealed a distinct function for B1b lymphocytes, a minor subset of mature B cells that closely resembles that of memory B cells in a number of aspects. In contrast to the development of conventional B cell …
Fibulin-2 Is Dispensable For Mouse Development And Elastic Fiber Formation, Francois-Xavier Sicot, Takeshi Tsuda, Dessislava Markova, John Klement, Machiko Arita, Rui-Zhu Zhang, Te-Cheng Pan, Robert P. Mecham, David E. Birk, Mon-Li Chu
Fibulin-2 Is Dispensable For Mouse Development And Elastic Fiber Formation, Francois-Xavier Sicot, Takeshi Tsuda, Dessislava Markova, John Klement, Machiko Arita, Rui-Zhu Zhang, Te-Cheng Pan, Robert P. Mecham, David E. Birk, Mon-Li Chu
Department of Dermatology and Cutaneous Biology Faculty Papers
Fibulin-2 is an extracellular matrix protein belonging to the five-member fibulin family, of which two members have been shown to play essential roles in elastic fiber formation during development. Fibulin-2 interacts with two major constituents of elastic fibers, tropoelastin and fibrillin-1, in vitro and localizes to elastic fibers in many tissues in vivo. The protein is prominently expressed during morphogenesis of the heart and aortic arch vessels and at early stages of cartilage development. To examine its role in vivo, we generated mice that do not express the fibulin-2 gene (Fbln2) through homologous recombination of embryonic stem cells. Unexpectedly, the …
Diverse Antidepressants Increase Cdp-Diacylglycerol Production And Phosphatidylinositide Resynthesis In Depression-Relevant Regions Of The Rat Brain, Kimberly R. Tyeryar, Habiba O.U. Vongtau, Ashiwel S. Undieh
Diverse Antidepressants Increase Cdp-Diacylglycerol Production And Phosphatidylinositide Resynthesis In Depression-Relevant Regions Of The Rat Brain, Kimberly R. Tyeryar, Habiba O.U. Vongtau, Ashiwel S. Undieh
College of Pharmacy Faculty Papers
BACKGROUND: Major depression is a serious mood disorder affecting millions of adults and children worldwide. While the etiopathology of depression remains obscure, antidepressant medications increase synaptic levels of monoamine neurotransmitters in brain regions associated with the disease. Monoamine transmitters activate multiple signaling cascades some of which have been investigated as potential mediators of depression or antidepressant drug action. However, the diacylglycerol arm of phosphoinositide signaling cascades has not been systematically investigated, even though downstream targets of this cascade have been implicated in depression. With the ultimate goal of uncovering the primary postsynaptic actions that may initiate cellular antidepressive signaling, we …
Molecular Ablation Of Tgf-Beta Signaling Pathways By Tyrosine Kinase Inhibition: The Coming Of A Promising New Era In The Treatment Of Tissue Fibrosis, Joel Rosenbloom, Sergio A. Jimenez
Molecular Ablation Of Tgf-Beta Signaling Pathways By Tyrosine Kinase Inhibition: The Coming Of A Promising New Era In The Treatment Of Tissue Fibrosis, Joel Rosenbloom, Sergio A. Jimenez
Selected Works of Sergio Jiménez, MD, MACR
No abstract provided.