scholarly journals Osteogenic Differentiation of Renal Interstitial Fibroblasts Promoted by lncRNA MALAT1 May Partially Contribute to Randall’s Plaque Formation

2021 ◽  
Vol 8 ◽  
Author(s):  
Zewu Zhu ◽  
Fang Huang ◽  
Weiping Xia ◽  
Huimin Zeng ◽  
Meng Gao ◽  
...  
Keyword(s):  
Osteogenic Differentiation ◽  
Transcription Initiation ◽  
Potential Role ◽  
Ectopic Calcification ◽  
Competing Endogenous Rna ◽  
Runx2 Expression ◽  
Lncrna Malat1 ◽  
Current Belief ◽  
Rna Immunoprecipitation ◽  
Randall’S Plaques

BackgroundThe current belief is that Randall’s plaques (RP) constitute a nidus for the formation of idiopathic calcium oxalate stones, but the upstream events in RP formation remain unclear. The present study aimed to investigate whether RP formation shares similarities with biomineralization and to illustrate the potential role played by the lncRNA MALAT1 in osteogenic differentiation of human renal interstitial fibroblasts (hRIFs).Materials and MethodsBiomineralization and MALAT1 expression were assessed in RP, and hRIFs were isolated and induced under osteogenic conditions for further experiments. The transcription initiation and termination sites in MALAT1 were identified by 5′ and 3′ RACE. RNA immunoprecipitation assays and luciferase assays were used to validate the interactions among MALAT1, Runx2 and miRNAs.ResultsUpregulated expression of osteogenic markers and MALAT1 was observed in RP and hRIFs induced with osteogenic medium. Biomineralization in RP and calcium phosphate (CaP) deposits in induced hRIFs were further verified by electron microscopy. Furthermore, overexpression of MALAT1 promoted the osteogenic phenotype of hRIFs, while treatment with a miR-320a-5p mimic and knockdown of Runx2 significantly suppressed the osteogenic phenotype. Further analysis showed that MALAT1 functioned as a competing endogenous RNA to sponge miR-320a-5p, leading to upregulation of Runx2 and thus promoting osteogenic differentiation of hRIFs.ConclusionEctopic calcification and MALAT1 partially contributed to the formation of RP, in which MALAT1 might promote Runx2 expression to regulate osteogenic differentiation of hRIFs by sponging miRNA-320a-5p. The current study sheds new light on the lncRNA-directed mechanism of RP formation via a process driven by osteogenic-like cells.

miRNA-126 Inhibits Osteogenic Differentiation of Rat Bone Marrow Mesenchymal Stem Cells (BMSCs)

2022 ◽  
Vol 12 (4) ◽  
pp. 794-799
Author(s):  
Le Chang ◽  
Wei Duan ◽  
Chuang Wang ◽  
Jian Zhang
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Osteogenic Differentiation ◽  
Mrna Level ◽  
Alizarin Red ◽  
Runx2 Expression ◽  
Alp Activity ◽  
Smad4 Protein ◽  
Marrow Mesenchymal Stem Cells

This study was to determine whether microRNA (miRNA)-126 regulates osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). Rat BMSCs were extracted and stimulated for osteogenic differentiation. Functional experiments were conducted to assess miR-126’s impact on BMSCs differentiation. Western blot and RT-qPCR determined miR-126 expression. ALP activity detection and alizarin red staining detection were also performed. After osteogenic differentiation of BMSCs, miR-126 expression was gradually decreased over time. Overexpression of miR-26 decreased ALP activity, Notch signaling activity as well as declined Runx2 expression and calcium Salt nodules after treatment. Importantly, we found that Smad4 serves as a target of miR-126 while upregulation of the miRNA was accompanied with the decreased Smad4 protein expression without affecting the Smad4 mRNA level. In conclusion, miR-126 restrains osteogenic differentiation through inhibition of SMAD4 signaling, providing a novel insight into the mechanism.

The transcription factor snail regulates osteogenic differentiation by repressing Runx2 expression

Bone ◽  
2010 ◽  
Vol 46 (6) ◽  
pp. 1498-1507 ◽  
Author(s):  
Su Jin Park ◽  
Seung-Hyun Jung ◽  
Gadi Jogeswar ◽  
Hyun-Mo Ryoo ◽  
Jong In Yook ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Osteogenic Differentiation ◽  
Runx2 Expression

Exosome-Derived miR21/SMAD7 Derived from Donor Osteoporosis Mesenchymal Stem Cells Inhibits Osteogenic Differentiation of Reconstituted Hosts

2019 ◽  
Vol 9 (10) ◽  
pp. 1346-1354
Author(s):  
Jie Chen ◽  
Yongsheng Luo ◽  
Ting Li ◽  
Wenbo Yang ◽  
Wen Zhang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Osteogenic Differentiation ◽  
Runx2 Expression ◽  
Alp Activity ◽  
Marrow Mesenchymal Stem Cells ◽  
Smad7 Expression ◽  
Different Sources ◽  
Adult Mscs ◽  
Normal Adults

Exogenous bone marrow mesenchymal stem cells (MSCs) can regulate osteogenic differentiation. MicroRNA-21 has been shown to target SMAD7. This study explored the mechanism by which miR-21/SMAD7 inhibits osteogenic differentiation from exosomes secreted by osteoporosis patients-derived MSCs. Exosomes were obtained from MSCs and miR-21 expression was detected. Normal MSCs were treated with exosomes secreted by MSCs from different sources for osteogenic differentiation followed by detection of ALP, Bglap and Runx2 level and ALP activity. Normal MSCs were divided into three groups, which were treated with exosomes from normal adult MSCs, osteoporosis patients-derived MSCs and osteoporosis patients-derived MSCs + SMAD7 overexpression followed by analysis of the mRNA expression of ALP, Bglap and Runx2 by qRT-PCR and ALP activity. miR-21 expression in exosomes from osteoporosis patients-derived MSCs was significantly higher than that from normal adults MSCs. After treatment with exosomes from osteoporosis patients-derived MSCs, Runx2 expression and ALP activity was significantly decreased. SMAD7 expression in osteoporosis patients was significantly lower than that in normal adults. The expression of ALP, Bglap and Runx2 is significantly decreased after overexpression of SMAD7. SMAD7 is a target gene of miR-21 and plays a role in inhibiting osteogenic differentiation induced by exosomes from osteoporosis-derived MSCs.

scholarly journals lncRNA MALAT1 Mediates Osteogenic Differentiation and Apoptosis in Osteoporosis by Regulating the miR-485-5p/WNT7B Axis

2021 ◽  
Author(s):  
Yuan Zhou ◽  
Zhuo Xu ◽  
Yuanyi Wang ◽  
Qiang Song ◽  
Ruofeng Yin
Keyword(s):  
Osteogenic Differentiation ◽  
Cell Apoptosis ◽  
Binding Sites ◽  
Hindlimb Unloading ◽  
Cellular Functions ◽  
Alizarin Red ◽  
Lncrna Malat1 ◽  
Non Coding Rnas

Abstract Background: Accumulating evidence demonstrates that long non-coding RNAs (lncRNAs) are associated with the development of osteoporosis. This study aimed to investigate the effects of metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) on osteogenic differentiation and cell apoptosis in osteoporosis. Methods: hindlimb unloading (HU) was performed to establish osteoporosis model in vivo. MicroCT was applied for pathological analysis. Microgravity (MG) was used to construct osteoporosis in vitro. The mRNA and miRNA expression was determined using RT-qPCR. Protein expression was determined using western blot. The binding sites between miR-485-5p and MALAT1/Wnt family member 7B (WNT7B) was predicted by bioinformatics analysis and verified by luciferase and RNA pull-down assays. Cellular functions were determined by ALP staining, Alizarin red staining, and flow cytometry assays. Results: MALAT1 expression was downregulated in HU mice and MG treated MC3T3-E1 cells. However, overexpression of MALAT1 upregulated the expression of Bmp4, Col1a1, Spp1, and enhanced ALP activity. Additionally, overexpression of MALAT1 inhibited apoptosis, decreased Bax and caspase-3 levels, and increased Bcl-2 level. Moreover, MALAT1 overexpression improved bone phenotype in vivo. MALAT1 functioned as a ceRNA to upregulate WNT7B. Overexpression of miR-485-5p rescued the promotion of osteogenic differentiation and the inhibition of apoptosis induced by MALAT1. Knockdown of WNT7B abolished the facilitation of osteogenic differentiation and the suppression of apoptosis induced by downregulation of miR-485-5p. Conclusion: In conclusion, MALAT1 promoted osteogenic differentiation and inhibited cell apoptosis through miR-485-5p/WNT7B axis, which suggested that MALAT1 is a potential target to alleviate osteoporosis.

scholarly journals Integrated analysis of lncRNA–mRNA networks associated with an SLA titanium surface reveals the potential role of HIF1A-AS1 in bone remodeling

RSC Advances ◽  
2020 ◽  
Vol 10 (35) ◽  
pp. 20972-20990
Author(s):  
Yan Zheng ◽  
Yunfei Zheng ◽  
Lingfei Jia ◽  
Yu Zhang ◽  
Ye Lin
Keyword(s):  
Osteogenic Differentiation ◽  
Bone Remodeling ◽  
P38 Mapk ◽  
Titanium Surface ◽  
Potential Role ◽  
Integrated Analysis ◽  
Non Coding Rna ◽  
Long Non Coding Rna

Long non-coding RNA HIF1A-AS1 plays a role in SLA titanium surface-induced osteogenic differentiation of hBMSCs by regulating p38 MAPK.

Ghrelin inhibits early osteogenic differentiation of C3H10T1/2 cells by suppressing Runx2 expression and enhancing PPARγ and C/EBPα expression

2009 ◽  
Vol 106 (4) ◽  
pp. 626-632 ◽  
Author(s):  
Sang Wan Kim ◽  
Ok Kyung Choi ◽  
Ju Yeon Jung ◽  
Jae-Yeon Yang ◽  
Sun Wook Cho ◽  
...  
Keyword(s):  
Osteogenic Differentiation ◽  
Runx2 Expression
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