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A novel BMP2 secretagogue ameliorates glucocorticoid induced oxidative stress in osteoblasts by activating NRF2 dependent survival while promoting Wnt/ β-catenin mediated osteogenesis
Free Radic Biol Med. 2022 Aug 10:S0891-5849(22)00514-7. doi: 10.1016/j.freeradbiomed.2022.08.007. Online ahead of print.ABSTRACTIn our previous study, a novel BMP2 secretagogue was synthesized belonging to a class of galloyl conjugates of flavanones, with remarkable osteogenic potential that promoted bone regeneration. We aimed to establish the protective effect of our compound against bone loss that co-exists with excess Glucocorticoid (GC) therapy. GC therapy induces osteoblast damage leading to apoptosis by increasing reactive oxygen species (ROS). Our results delineate that compound 5e (a BMP2 secretagogue) activates N...
Source: Free Radical Biology and Medicine - August 13, 2022 Category: Biology Authors: Divya Rai Ashish Kumar Tripathi Anirban Sardar Alka Raj Pandey Shradha Sinha Kunal Chutani Geeta Dhaniya Priyanka Kothari Koneni V Sashidhara Ritu Trivedi Source Type: research

Chlorogenic acid promotes the Nrf2/HO-1 anti-oxidative pathway by activating p21Waf1/Cip1 to resist dexamethasone-induced apoptosis in osteoblastic cells.
Abstract In a previous study, p21Waf1/Cip1 (p21) promoted activation of the nuclear factor E2-related factor 2 (Nrf2)/heme oxygenase-1 (HO-1) pathway, which has an important role in regulating apoptosis triggered by oxidative stress and inhibiting development of osteoporosis. Chlorogenic acid (CGA) has a strong protective effect on osteoporosis, closely related to activating the Nrf2/HO-1 pathway. However, whether CGA can resist apoptosis by regulating p21 and consequently promote activation of the Nrf2/HO-1 pathway needs further investigation. MC3T3-E1 cells were treated with dexamethasone (Dex), with or without ...
Source: Free Radical Biology and Medicine - April 16, 2019 Category: Biology Authors: Han D, Gu X, Gao J, Wang Z, Liu G, Barkema HW, Han B Tags: Free Radic Biol Med Source Type: research