Acta Medica Iranica 2018. 56(4):234-243.

Mechanistic Insight Into the Efficient Osteogenic Potential of Dihydrotestosterone: Exploring Sequential Expression of Bone-Related Protein Biomarkers
Hnin Ei Thu, Zahid Hussain, Isa Naina Mohamed, Ahmad Nazrun Shuid


Numerous in vitro, in vivo and clinical studies have evidenced the outstanding potential of dihydrotestosterone (DHT) in the treatment of male osteoporosis. Despite of promising clinical efficacy of DHT in regulating the skeletal growth and homeostasis, the exact molecular and translational mechanism is yet to be explored. This study was aimed to investigate the bone-forming molecular mechanism of DHT using MC3T3-E1 cell line as in vitro model. The mechanism of bone-forming ability of DHT was assessed by evaluating the time-mannered expression of bone-related biomarkers such as bone morphogenic protein-2 (BMP-2), alkaline phosphatase (ALP), runt-related transcription factor 2 (Runx-2), osteocalcin (OCN), type I collagen, osteopontin (OPN), transforming growth factor-β1 (TGF-β1) and androgen receptor (AR). Results demonstrated a remarkable efficacy of DHT (at a dose of 0.1 ng/mL) in promoting the expression of these vital bone-forming mediators. The resulting analysis revealed that the DHT-0.1 group showed higher expression of BMP-2 (106±9 pg/mL), ALP (381±16 pg/mL), Runx-2 (664±32 pg/mL), OCN (2265±111 pg/mL), type I collagen (276±16 pg/mL), TGF-β1 (81±7 pg/mL) and AR (411±21 pg/mL) compared to the control (CN) and other DHT-treated groups. These findings provide an in vitro evidence for the bone-forming capacity of DHT and its therapeutic significance for the treatment of male osteoporosis.


Dihydrotestosterone; Osteoporosis; Enhanced osteogenesis; Cell proliferation; Bone-related biomarkers; Time mannered expression

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