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Cadmium-induced apoptosis of Siberian tiger fibroblasts via disrupted intracellular homeostasis Biol. Res.
Wang,Hui; Liu,Zheng; Zhang,Wenxiu; Yuan,Ziao; Yuan,Hongyi; Liu,Xueting; Yang,Chunwen; Guan,Weijun.
BACKGROUND: Heavy metals can cause great harm to Siberian tigers in the natural environment. Cadmium (Cd2+) is an environmental contaminant that affects multiple cellular processes, including cell proliferation, differentiation, and survival. It has been shown to induce apoptosis in a variety of cell types and tissues. RESULTS: We investigated the apoptotic effects of Cd2+ on Siberian tiger fibroblasts in vitro. Our research revealed the typical signs of apoptosis after Cd²+ exposure. Apoptosis was dose- (0-4.8 μΜ) and duration-dependent (12-48 h), and proliferation was strongly inhibited. Cd²+ increased the activity of caspase-3, -8, and -9 and disrupted calcium homeostasis by causing oxidative stress and mitochondrial dysfunction. It...
Tipo: Journal article Palavras-chave: Siberian tiger; Cadmium; Apoptosis; Fibroblast; Calcium.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602016000100042
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TNNI3K is a novel mediator of myofilament function and phosphorylates cardiac troponin I BJMBR
Wang,Hui; Wang,Lin; Song,Li; Zhang,Yan-Wan; Ye,Jue; Xu,Rui-Xia; Shi,Na; Meng,Xian-Min.
The phosphorylation of cardiac troponin I (cTnI) plays an important role in the contractile dysfunction associated with heart failure. Human cardiac troponin I-interacting kinase (TNNI3K) is a novel cardiac-specific functional kinase that can bind to cTnI in a yeast two-hybrid screen. The purpose of this study was to investigate whether TNNI3K can phosphorylate cTnI at specific sites and to examine whether the phosphorylation of cTnI caused by TNNI3K can regulate cardiac myofilament contractile function. Co-immunoprecipitation was performed to confirm that TNNI3K could interact with cTnI. Kinase assays further indicated that TNNI3K did not phosphorylate cTnI at Ser23/24 and Ser44, but directly phosphorylated Ser43 and Thr143 in vitro. The results obtained...
Tipo: Info:eu-repo/semantics/article Palavras-chave: TNNI3K; CTnI; Phosphorylation; Contraction function.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200128
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