生长因子
生长因子一词是指天然的蛋白能刺激细胞增殖和细胞分化。生长因子调节细胞的各类活动与功能。生长因子通常充当细胞间的信号分子。生长因子结合到靶细胞表面的特异受体上。生长因子通常促进细胞分化和成熟。当然，因生长因子不一，其功能也多样。例如，骨形成蛋白刺激骨细胞的分化；而血管内皮生长因子刺激促进血管内皮细胞增殖。
Pleiotrophin
中文百科
英语百科
Pleiotrophin 生长因子
Pleiotrophin (PTN) also known as heparin-binding brain mitogen (HBBM) or heparin-binding growth factor 8 (HBGF-8) or neurite growth-promoting factor 1 (NEGF1) or heparin affinity regulatory peptide (HARP) or heparin binding growth associated molecule (HB-GAM) is a protein that in humans is encoded by the PTN gene. Pleiotrophin is an 18-kDa growth factor that has a high affinity for heparin. It is structurally related to midkine and retinoic acid induced heparin-binding protein.
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