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Long non-coding RNA MIR22HG suppresses the chondrogenic differentiation of human adipose-derived stem cells by interacting with CTCF to upregulate CRLF1

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Abstract

Improved chondrogenic differentiation of mesenchymal stem cells (MSCs) by genetic regulation is a potential method for regenerating articular cartilage. LncRNA MIR22HG has been proven to accelerate osteogenic differentiation, but the regulation mechanism of chondrogenic differentiation is still unclear. Human adipose-derived stem cells (hADSCs) have been widely utilised for bone tissue engineering applications. The present study aimed to examine the effect of MIR22HG on the chondrogenic differentiation of hADSCs. The results confirmed that MIR22HG was downregulated in the process of chondrogenic differentiation. Subsequently, gain- and loss-of-function of MIR22HG experiments showed that the overexpression of MIR22HG suppressed the deposition of cartilage matrix proteoglycans and decreased the expression of cartilage-related markers (e.g. Sox9, ACAN and Col2A1), whereas the knockdown of MIR22HG had the opposite effect. MIR22HG could bind to CTCF (CCCTC-binding factor), and CTCF could bind to the CRLF1 (cytokine receptor-like factor 1) promoter and upregulate CRLF1 gene expression. Besides, inhibition of CRLF1 can reverse the effect of MIR22HG on cell chondrogenic differentiation of hADSCs. Taken together, our outcomes reveal that MIR22HG suppressed chondrogenic differentiation by interaction with CTCF to stabilise CRLF1.

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All data generated or analysed during this study are included in this article.

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Acknowledgements

We thank all members of the laboratory for their kindness and help.

Funding

This work was supported by National Natural Science Foundation of China (31660265 and 31960208), Youth Fund of Guizhou Provincial People’s Hospital (GZSYQN(2015)06), Subsidy Foundation of National Natural Science Foundation of Guizhou Provincial People’s Hospital (Guizhou Science and Technology Platform (2017)5724), Science and Technology Foundation of Guizhou Province (Guizhou Science and Technology J Word (2015)2096) and Subsidy Foundation of National Natural Science Foundation of Guizhou Provincial People’s Hospital (GPPH-NSFC-2019-1).

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Contributions

J.G., Z.R., and Z.Y. designed and performed the research; J.G. and W.Y. data collection; X.W., H.H., and B.L. data analysis and interpretation; J.G. wrote the manuscript. All authors read and approved the final manuscript.

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Correspondence to Zhijing Ren or Zhen Yang.

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HADSCs were collected from healthy people by liposuction aspiration through the ethical standards of the Ethics Committee of Guizhou Provincial People’s Hospital. Written informed consent was received from the donors.

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The authors declare no competing interests.

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Guo, J., Ye, W., Wu, X. et al. Long non-coding RNA MIR22HG suppresses the chondrogenic differentiation of human adipose-derived stem cells by interacting with CTCF to upregulate CRLF1. Funct Integr Genomics 23, 329 (2023). https://doi.org/10.1007/s10142-023-01248-0

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  • DOI: https://doi.org/10.1007/s10142-023-01248-0

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