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Transcriptomic analysis and biological evaluation reveals that LMO3 regulates the osteogenic differentiation of human adipose derived stem cells via PI3K/Akt signaling pathway

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Abstract

Autologous bone transplantation which is a common treatment method for bone defects needs a large quantity of bone cells. In order to develop new treatments to regenerating bone tissues, this research aimed at identifying the key genes and finding their mechanism in human adipose-derived stem cells (hADSCs) osteogenesis. GSE63754, GSE89330 and GSE72429 were downloaded to perform GO functional and KEGG pathway analyses, construct a competing endogenous RNA (ceRNA) network, construct a PPI network and identify hub genes. The expression level of LMO3 during the osteogenesis of hADSCs was examined by quantitative reverse transcription polymerase chain reaction and western blot. Lentivirus transfection was used to knock down or overexpress LMO3, which enabled us to investigate the effect of LMO3 on osteogenic differentiation of hADSCs. Wortmannin were used to identify the mechanism of the LMO3/PI3K/Akt axis in regulating osteogenic differentiation of hADSCs. Moreover, ectopic bone formation in nude mice was used to investigate the effect of LMO3 on osteogenesis in vivo. In this study, we found the expression of LMO3 was significantly upregulated during the osteogenic differentiation of hADSCs. LMO3 knockdown remarkably suppressed osteogenic differentiation of hADSCs, while LMO3 overexpression promoted osteogenic differentiation of hADSCs both in vitro and in vivo. Moreover, we discovered that the enhancing effect of LMO3 overexpression on osteogenic differentiation was related to the activation of PI3K/Akt signaling pathway. Inhibition of PI3K/Akt signaling pathway with wortmannin effectively blocked the stimulation of osteogenic differentiation induced by LMO3 overexpression. In conclusion, based on transcriptomic analysis, we identified key genes involved in regulating the osteogenic differentiation of hADSCs. In addition, we found that LMO3 might act as a positive modulator of hADSC osteogenic differentiation by mediating PI3K/Akt signaling pathway. Manipulating the expression of LMO3 and its associated pathways might contribute to advances in bone regeneration and tissue engineering.

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Funding

This study was supported by the Joint Funds of the Natural science Foundation of Liaoning Province, Grant Number 2020-ZLLH-40.

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Authors and Affiliations

  1. Department of Breast Surgery, Cancer Hospital of China Medical University, No. 44 Xiaoheyan Road, Dadong District, Shenyang, 110042, Liaoning Province, People’s Republic of China

    Yue Kang

  2. Department of Information Management, Cancer Hospital of China Medical University, No. 44 Xiaoheyan Road, Dadong District, Shenyang, 110042, Liaoning Province, People’s Republic of China

    Wenye Pei

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  1. Yue Kang
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Correspondence to Wenye Pei.

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Kang, Y., Pei, W. Transcriptomic analysis and biological evaluation reveals that LMO3 regulates the osteogenic differentiation of human adipose derived stem cells via PI3K/Akt signaling pathway. J Mol Histol 53, 379–394 (2022). https://doi.org/10.1007/s10735-021-10047-5

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  • DOI: https://doi.org/10.1007/s10735-021-10047-5

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