数字农科院2.0

Porcine Bone Collagen Peptides Promote Osteoblast Proliferation And Differentiation By Activating The Pi3K/Akt Signaling Pathway

文献类型： 外文期刊

作者： Zhu, LY; Xie, YY; Wen, BT; Ye, ML; Liu, YS; Imam, KMSU; Cai, HM; Zhang, CH; Wang, FZ; Xin, FJ

作者机构：

关键词： Collagen Peptides; Osteoblasts; Apoptosis; Cell Cycle; Pi3K/Akt

期刊名称： JOURNAL OF FUNCTIONAL FOODS

ISSN： 1756-4646

年卷期： 2020 年 64 卷

页码：

收录情况： JCR（2021版）

摘要： Collagen peptides are widely used in food and medicine industries. Given the significant role of collagen in bone structure, collagen peptides are considered promising for osteoporosis prevention and treatment. To elucidate their effect on osteoporosis, we extracted porcine collagen, digested it into peptides, and investigated their biological function using osteoblast MC3T3-E1 cells. The collagen structure was relatively stable and we prepared peptides with different molecular weights (MWs) via hydrolysis with two commercially-available enzymes (alcalase/trypsin). Low-MW ( < 1 kDa) peptides, mainly comprised of tripeptides, increased proliferation and promoted cell cycle progression by upregulating CDK-2, CDK-4, Cyclin B1, and Cyclin D1, and inhibited apoptosis by decreasing Bax/Bcl-2 and cleaved caspase-3 expression. Meanwhile, they upregulated p-Akt and downregulated PTEN, indicating that low-MW peptides inhibited apoptosis and promoted osteoblast proliferation and differentiation by activating PI3K/Akt pathway. Thus, we report the mechanism through which porcine bone-derived collagen peptides could be used to prevent and treat osteoporosis.

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