Abstract
Osteoporosis development is linked to abnormal bone marrow mesenchymal stem cells (BMSCs) differentiation. N6-methyladenosine (m6A), a prevalent mRNA modification, is known to influence BMSCs' osteogenic capacity. Qianggu decoction (QGD), a traditional Chinese medicine for osteoporosis, has unknown effects on BMSCs differentiation. This study investigates QGD's impact on BMSCs and its potential to ameliorate osteoporosis through m6A regulation. Using Sprague-Dawley (SD) rats with ovariectomy-induced osteoporosis, it is evaluated QGD's antiosteoporotic effects through micro-CT, histology, Western blotting, and osteoblastogenesis markers. QGD is found to enhance bone tissue growth and upregulate osteogenic markers Runx2, OPN, and OCN. It also promoted BMSCs osteogenic differentiation, as shown by increased calcium nodules and ALP activity. QGD treatment significantly increased m6A RNA levels and Mettl3 expression in BMSCs. Silencing Mettl3 with siRNA negated QGD's osteogenic effects. Collectively, QGD may improve BMSCs differentiation and mitigate osteoporosis, potentially through Mettl3-mediated m6A modification.
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