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家禽孵化期胚胎肌肉发育研究进展 被引量:8

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摘要 肌肉细胞增殖、迁移、黏附和融合形成肌管,肌管进一步分化为成熟肌纤维,肌纤维发育在孵化期几乎就能完成。胚胎期肌肉生长的特点是成肌细胞增生,数量增多,而孵化后肌纤维的生长通过肌肥大过程实现,这导致卫星细胞核的补充。增生和肥大由细胞外因子调控,这些外部因子包括生长因子和细胞外基质。生长因子包括:肝细胞生长因子、成纤维细胞生长因子2、β-转化生长因子、胰岛素样生长因子和刺激或抑制成肌细胞和卫星细胞增生及分化的肌肉生长抑制素。一些生长因子如成纤维细胞生长因子2,必须与一种低亲和性的胞外基质高分子相互作用后与细胞信号必需的高亲和力受体绑定在一起。生长因子信号中的细胞外基质蛋白的表达有可能会在增生和肥大中影响肌肉生长特性。进一步研究与肌肉生长机制有关的信号途径,有益于家禽选育过程中对关键基因的选择。
出处 《中国家禽》 北大核心 2010年第5期43-45,49,共4页 China Poultry
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同被引文献73

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