QINGJIAN HE¹, HUIXIN ZHU^2,3, SHANHONG FANG^4,5,*

BIOCELL, Vol.48, No.2, pp. 205-216, 2024, DOI:10.32604/biocell.2023.045109

Abstract Introduction: Dexamethasone (Dex) caused impaired osteoblast differentiation and oxidative stress (OS) in bone marrow mesenchymal stem cells (BMSCs). This work sought to elucidate the precise molecular pathway through which Dex influences osteogenic differentiation (OD) and OS in BMSCs. Methods: The expression of Runt-related transcription factor 1 (RUNX1) and alpha-2 macroglobulin (A2M) was assessed in Dex-treated BMSCs using qRT-PCR and Western Blot. Following the functional rescue experiments, cell proliferation was determined by MTT assay, reactive oxygen species (ROS) expression by DCFH-DA fluorescent probe, lactate dehydrogenase (LDH), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (Gpx) expression by kits, OD by alkaline… More >

WENQI CHEN^1,#, XIAOYANG CHU^2,#, YANG ZENG^3,#, YOUSHENG YAN⁴, YIPENG WANG⁴, DONGLAN SUN¹, DONGLIANG ZHANG⁵, JING ZHANG^1,*, KAI YANG^4,*

BIOCELL, Vol.47, No.7, pp. 1561-1569, 2023, DOI:10.32604/biocell.2023.028851

Abstract Background: Receptor tyrosine kinase-like orphan receptor 2 (ROR2) has a vital role in osteogenesis. However, the mechanism underlying the regulation of ROR2 in osteogenic differentiation is still poorly comprehended. A previous study by our research group showed that a novel compound heterozygous ROR2 variation accounted for the autosomal recessive Robinow syndrome (ARRS). This study attempted to explore the impact of the ROR2: c.904C>T variant specifically on the osteogenic differentiation of BMSCs. Methods: Coimmunoprecipitation (CoIP)-western blotting was carried out to identify the interaction between ROR2 and Wnt5a. Double-immunofluorescence staining was used for determining the expressions and co-localization of ROR2 and Wnt5a… More > Graphic Abstract

NINGYU LI^1,2,#, XIAOFANG CHEN^2,#,§, SUXIA GENG², PEILONG LAI², LISI HUANG², MINMING LI², XIN HUANG², CHENGXIN DENG², YULIAN WANG², JIANYU WENG², XIN DU^1,2,*

BIOCELL, Vol.47, No.1, pp. 133-141, 2023, DOI:10.32604/biocell.2022.022021

Abstract The pathogenesis of myelodysplastic syndrome (MDS) may be related to the abnormal expression of microRNAs (miRNAs), which could influence the differentiation capacity of mesenchymal stem cells (MSCs) towards adipogenic and osteogenic lineages. In this study, exosomes from bone marrow plasma were successfully extracted and identified. Assessment of miR-103-3p expression in exosomes isolated from BM in 34 MDS patients and 10 controls revealed its 0.52-fold downregulation in patients with MDS compared with controls (NOR) and was downregulated 0.55-fold in MDS-MSCs compared with NOR-MSCs. Transfection of MDS-MSCs with the miR-103-3p mimic improved osteogenic differentiation and decreased adipogenic differentiation in vitro, while inhibition… More >

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 >

YUNZE XUAN^1,#, BIN JIN^1,#, SAYAN DEB DUTTA^5,#, MENGMENG LIU², ZAIXIAN SHEN¹, XIWEN LIU³, YANG KANGJUAN^4,*, LIM KI-TAEK^5,*

BIOCELL, Vol.44, No.3, pp. 389-400, 2020, DOI:10.32604/biocell.2020.09170

Abstract Periodontitis is a type of chronic inflammation in the gingival tissue caused by infectious bacteria colonizing the surface of the teeth, leading to the destruction of tooth-supporting tissues and loss of alveolar bone. Suberoylanilide hydroxamic acid (SAHA), a class of histone deacetylase (HDAC) inhibitor, has the potential to stimulate osteoblast differentiation by acetylating histone proteins, and thus suppressing the expression of adipogenic and chondrogenic genes. However, the effect of SAHA on the differentiation of human periodontal ligament stem cells (hPDLSCs) is yet to be elucidated. Herein, we investigated the effects of SAHA on in vitro proliferation and differentiation of hPDLSCs… More >

N.M. OCARINO*, A. BOZZI**, R.D.O. PEREIRA*, N.M. BREYNER**, V.L. SILVA*, P. CASTANHEIRA**, A.M. GOES**, R. SERAKIDES*

BIOCELL, Vol.32, No.2, pp. 175-183, 2008, DOI:10.32604/biocell.2008.32.175

Abstract 4’, 6-diamidino-2-phenylindole dihydrochloride (DAPI) is a DNA dye widely used to mark and trace stem cells in therapy. We here studied the effect of DAPI staining on the behavior of mesenchymal stem cells cultured in either a control, non-osteogenic medium or in an osteogenic differentiation medium. In the control medium, the number of stem cells/field, as well as the number of fluorescent cells/field increased up to the sixth day in both control and DAPI-treated cultures. Afterwards, both the number of fluorescent cells and their fluorescence intensity decreased. Control cells were fusiform and with some long extensions that apparently linked them… More >

Danyang Yue¹, Yijuan Fan¹, Juan Lu¹, Mengxue Zhang¹, Jin Zhou¹, Yuying Bai¹, Jun Pan^1,*

Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 144-144, 2019, DOI:10.32604/mcb.2019.07084

Abstract Mesenchymal Stem Cells (MSCs) are recruited to the musculoskeletal system following trauma [1] or chemicals stimulation [2]. The regulation of their differentiation into either bone or cartilage cells is a key question. The fluid shear stress (FSS) is of pivotal importance to the development, function and even the repair of all tissues in the musculoskeletal system [3]. We previously found that MSCs are sensitive enough to distinguish a slight change of FSS stimulation during their differentiation commitment to bone or cartilage cells, and the internal mechanisms. In detail, MSCs were exposed to laminar FSS linearly increased from 0 to 10… More >

Lili Dong¹, Yang Song^1,*, Li Yang^1,*

Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 78-78, 2019, DOI:10.32604/mcb.2019.07130

Abstract It has been widely recognized that stem cells possess the potential of osteogenic differentiation, which greatly contribute to bone repair. Recently, accumulating evidences have indicated that mechanical cues are required for bone repair ^[1,2]. However, how local and recruited stem cells in the bone architecture receive the mechanical signals is poorly understood ^[3,4]. The purpose of this study is to demonstrate that macrophages potentially transduce the mechanical signals for stem cell osteogenic lineage. This demonstration has been carried out through a co-culture system to investigate the effect of macrophages which subjected to cyclic stretch on the osteogenic potential of bone… More >

I. A. Titushkin¹, M. Cho¹

Molecular & Cellular Biomechanics, Vol.3, No.4, pp. 151-151, 2006, DOI:10.32604/mcb.2006.003.151

Abstract This article has no abstract. More >