Occludin controls HIV transcription in brain pericytes via regulation of SIRT‐1 activation
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SIRT1 Regulates HIV Transcription via Tat Deacetylation
The human immunodeficiency virus (HIV) Tat protein is acetylated by the transcriptional coactivator p300, a necessary step in Tat-mediated transactivation. We report here that Tat is deacetylated by human sirtuin 1 (SIRT1), a nicotinamide adenine dinucleotide-dependent class III protein deacetylase in vitro and in vivo. Tat and SIRT1 coimmunoprecipitate and synergistically activate the HIV prom...
متن کاملHomocysteine Induces Heme Oxygenase-1 Expression via Transcription Factor Nrf2 Activation in HepG2 Cells
Background: Elevated level of plasma homocysteine has been related to various diseases. Patients with hyperhomocysteinemia can develop hepatic steatosis and fibrosis. We hypothesized that oxidative stress induced by homocysteine might play an important role in pathogenesis of liver injury. Also, the cellular response designed to combat oxidative stress is primarily controlled by the transcripti...
متن کاملRetraction for Zhang et al., Metabolic regulation of SIRT1 transcription via a HIC1:CtBP corepressor complex.
The Sir2 histone deacetylases are important for gene regulation, metabolism, and longevity. A unique feature of these enzymes is their utilization of NAD(+) as a cosubstrate, which has led to the suggestion that Sir2 activity reflects the cellular energy state. We show that SIRT1, a mammalian Sir2 homologue, is also controlled at the transcriptional level through a mechanism that is specific fo...
متن کاملMetabolic regulation of SIRT1 transcription via a HIC1:CtBP corepressor complex
CELL BIOLOGY Retraction for “Metabolic regulation of SIRT1 transcription via a HIC1:CtBP corepressor complex,” by Qinghong Zhang, Su-Yan Wang, Capucine Fleuriel, Dominique Leprince, Jonathan V. Rocheleau, David W. Piston, and Richard H. Goodman, which appeared in issue 3, January 16, 2007, of Proc Natl Acad Sci USA (104:829–833; first published January 9, 2007; 10.1073/ pnas.0610590104). The un...
متن کاملSIRT1 Activation by Resveratrol Alleviates Cardiac Dysfunction via Mitochondrial Regulation in Diabetic Cardiomyopathy Mice
BACKGROUND Diabetic cardiomyopathy (DCM) is a major threat for diabetic patients. Silent information regulator 1 (SIRT1) has a regulatory effect on mitochondrial dynamics, which is associated with DCM pathological changes. Our study aims to investigate whether resveratrol, a SRIT1 activator, could exert a protective effect against DCM. METHODS AND RESULTS Cardiac-specific SIRT1 knockout (SIRT...
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ژورنال
عنوان ژورنال: The FASEB Journal
سال: 2015
ISSN: 0892-6638,1530-6860
DOI: 10.1096/fj.15-277673