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Articles 1 - 2 of 2
Full-Text Articles in Medicine and Health Sciences
Gucy2c Opposes Systemic Genotoxic Tumorigenesis By Regulating Akt-Dependent Intestinal Barrier Integrity, Jieru Egeria Lin, Adam Eugene Snook, Peng Li, Brian Arthur Stoecker, Gilbert Won Kim, Michael Sullivan Magee, Alex Vladimir Mejia Garcia, Michael Anthony Valentino, Terry Hyslop, Stephanie Schulz, Scott Arthur Waldman
Gucy2c Opposes Systemic Genotoxic Tumorigenesis By Regulating Akt-Dependent Intestinal Barrier Integrity, Jieru Egeria Lin, Adam Eugene Snook, Peng Li, Brian Arthur Stoecker, Gilbert Won Kim, Michael Sullivan Magee, Alex Vladimir Mejia Garcia, Michael Anthony Valentino, Terry Hyslop, Stephanie Schulz, Scott Arthur Waldman
Department of Pharmacology and Experimental Therapeutics Faculty Papers
The barrier separating mucosal and systemic compartments comprises epithelial cells, annealed by tight junctions, limiting permeability. GUCY2C recently emerged as an intestinal tumor suppressor coordinating AKT1-dependent crypt-villus homeostasis. Here, the contribution of GUCY2C to barrier integrity opposing colitis and systemic tumorigenesis is defined. Mice deficient in GUCY2C (Gucy2c−/−) exhibited barrier hyperpermeability associated with reduced junctional proteins. Conversely, activation of GUCY2C in mice reduced barrier permeability associated with increased junctional proteins. Further, silencing GUCY2C exacerbated, while activation reduced, chemical barrier disruption and colitis. Moreover, eliminating GUCY2C amplified, while activation reduced, systemic oxidative DNA damage. This genotoxicity was associated …
Selection Of Optimal Reference Genes For Normalization In Quantitative Rt-Pcr., Inna Chervoneva, Yanyan Li, Stephanie Schulz, Sean Croker, Chantell Wilson, Scott A Waldman, Terry Hyslop
Selection Of Optimal Reference Genes For Normalization In Quantitative Rt-Pcr., Inna Chervoneva, Yanyan Li, Stephanie Schulz, Sean Croker, Chantell Wilson, Scott A Waldman, Terry Hyslop
Department of Pharmacology and Experimental Therapeutics Faculty Papers
BACKGROUND: Normalization in real-time qRT-PCR is necessary to compensate for experimental variation. A popular normalization strategy employs reference gene(s), which may introduce additional variability into normalized expression levels due to innate variation (between tissues, individuals, etc). To minimize this innate variability, multiple reference genes are used. Current methods of selecting reference genes make an assumption of independence in their innate variation. This assumption is not always justified, which may lead to selecting a suboptimal set of reference genes. RESULTS: We propose a robust approach for selecting optimal subset(s) of reference genes with the smallest variance of the corresponding normalizing factors. …