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首页> 外文期刊>Journal of Cellular Physiology >Inhibition of cell proliferation and induction of apoptosis by ExFABP gene targeting.
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Inhibition of cell proliferation and induction of apoptosis by ExFABP gene targeting.

机译:抑制细胞增殖和诱导由ExFABP凋亡基因打靶。

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摘要

Ex-FABP, an extracellular fatty acid binding lipocalin, is physiologically expressed by differentiating chicken chondrocytes and myoblasts. Its expression is enhanced after cell treatment with inflammatory stimuli and repressed by anti-inflammatory agents, behaving as an acute phase protein. Chicken liver fragments in culture show enhanced protein expression after bacterial endotoxin treatment. To investigate the biological role of Ex-FABP, we stably transfected proliferating chondrocytes with an expression vector carrying antisense oriented Ex-FABP cDNA. We observed a dramatic loss of cell viability and a strong inhibition of cell proliferation and differentiation. When chondrocytes were transfected with the antisense oriented Ex-FABP cDNA we observed that Ex-FABP down-modulation increased apoptotic cell number. Myoblasts transfected with the same expression vector showed extensive cell death and impaired myotube formation. We suggest that Ex-FABP acts as a constitutive survival protein and that its expression and activation are fundamental to protect chondrocytes from cell death.
机译:Ex-FABP,细胞外脂肪酸绑定lipocalin生理所表达的区分鸡软骨细胞和成肌细胞。治疗炎症刺激和压抑通过抗炎剂,表现为急性阶段的蛋白质。显示增强细菌后蛋白表达内毒素治疗。Ex-FABP生物作用,我们稳定转染软骨细胞增生一个表达式面向向量携带反义Ex-FABP cDNA。我们观察到一个戏剧性的细胞生存能力和损失一个强烈的细胞增殖和抑制分化。转染反义导向Ex-FABP互补脱氧核糖核酸我们发现Ex-FABP down-modulation凋亡细胞数量增加。转染表达相同的向量显示广泛的细胞死亡和受损肌管形成。组成型蛋白质和其生存表达和激活的基础保护软骨细胞免受细胞死亡。

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