XIAOFANG WANG¹, XIAOLIN TU^1,2,*, YUFEI MA¹, JIE CHEN¹, YANG SONG³, GUANGLIANG LIU¹

BIOCELL, Vol.46, No.9, pp. 2089-2099, 2022, DOI:10.32604/biocell.2022.020069

Abstract The limited bioactivity of scaffold materials is an important factor that restricts the development of bone tissue engineering. Wnt3a activates the classic Wnt/β-catenin signaling pathway which effects bone growth and development by the accumulation of β-catenin in the nucleus. In this study, we fabricated 3D printed PCL scaffold with Wnt3a-induced murine bone marrow-derived stromal cell line ST2 decellularized matrix (Wnt3a-ST2-dCM-PCL) and ST2 decellularized matrix (ST2-dCM-PCL) by freeze-thaw cycle and DNase decellularization treatment which efficiently decellularized >90% DNA while preserved most protein. Compared to ST2-dCM-PCL, Wnt3a-ST2-dCM-PCL significantly enhanced newly-seeded ST2 proliferation, osteogenic differentiation and upregulated osteogenic marker genes alkaline phosphatase (Alp),… More >

MIN TANG^1,#, XUELING HE^1,2,#, XINGHONG YAO¹, JIRUI WEN¹, MINGYUE BAO¹, LIANG LI^1,*

BIOCELL, Vol.46, No.6, pp. 1465-1472, 2022, DOI:10.32604/biocell.2022.018967

Abstract The present study was designed to investigate the role of estrogen receptor α (ERα) in biaxial tensile strain (BTS) regulated osteogenic differentiation of rat bone marrow-derived mesenchymal stem cells (rBMSCs). rBMSCs were derived from rats and overexpressed ERα. The rBMSCs were subjected to BTS at 1 Hz with a strain of 2% for 4 h per day, 3 days, with or without ERα inhibitor ICI 182,780 (ICI). Then, bone mineralization was performed by Alizarin Red Staining. The markers of osteogenic differentiation and downstream Wnt3a/β-catenin signaling were detected by western blotting. Results showed that BTS enhanced the osteogenic differentiation of rBMSCs,… More >