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Overexpression of Shrm4 promotes proliferation and differentiation of neural stem cells through activation of GABA signaling pathway

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A Correction to this article was published on 24 June 2020

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Abstract

Shrm4 is a protein that is exclusively expressed in polarized tissues. The physiological function of Shrm4 in the brain was required to be elucidated. Thus, we aimed to explore how the Shrm4-mediated gamma-aminobutyric acid (GABA) pathway affected neural stem cells (NSCs). At first, the Nestin expression in cultured NSCs was identified. After determination of the interaction of Shrm4 and GABAB1, a series of in vitro experiment were performed to detect cell proliferation, the ability of cell colony formation, degree that NSCs differentiated into neurons, the apoptosis rate, and cell cycle. The levels of Shrm4, GABAB1, Bcl-2-associated protein x (Bax), B cell lymphoma 2 (Bcl-2), cleaved Caspase-3, microtubule-associated protein 2 (MAP-2) as well as suppressor of cytokine signaling 2 (SOCS2) were detected to further assess the role of Shrm4 and GABA pathway in NSCs. Initially, we found that Shrm4 could bind to GABAB1, and overexpression of Shrm4 or activation of GABAB1 increased the number of positive cells, and promoted cell viability, colony formation rate and differentiation of NSCs. After overexpression of Shrm4 or activation of GABAB1, cells in the G1 phase were decreased, while those in the S phase were increased with an inhibited cell apoptosis rate in the NSCs. Besides, the overexpression of Shrm4 or activation of GABAB1 upregulated the levels of Shrm4, GABAB1, Bcl-2, MAP-2 and SOCS2, while downregulated Bax and cleaved Caspase-3 in NSCs. Overall, overexpression of Shrm4 activated GABAB1 to stimulate the proliferation and differentiation of NSCs. Thus, Shrm4 might be considered as a novel target for promoting the proliferation and differentiation of NSCs.

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  • 24 June 2020

    The original publication of the article includes an error in Fig. 2. The correct version of the Fig. 2 is provided in this correction.

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Acknowledgements

We acknowledge and appreciate our colleagues for their valuable efforts and comments on this paper.

Funding

This study was supported by National Natural Science Foundation of China (No. 81901534).

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Authors and Affiliations

  1. Department of Psychology, The First Hospital of Jilin University, Changchun, 130021, People’s Republic of China

    Runhui Tian

  2. Department of Andrology, The First Hospital of Jilin University, Changchun, 130021, People’s Republic of China

    Kaimin Guo

  3. Department of Psychology, The Sixth People’s Hospital of Changchun, Changchun, 130000, People’s Republic of China

    Bo Wu

  4. Department of Pediatric Respiratory Disease, The First Hospital of Jilin University, No. 71 Xinmin Street, Changchun, 130021, Jilin Province, People’s Republic of China

    Hongbo Wang

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  1. Runhui Tian
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  2. Kaimin Guo
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Correspondence to Hongbo Wang.

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The authors declare that there are no competing interests associated with the manuscript.

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All protocols for animal experiments were conducted with approval of the Animal Care Committee of The First Hospital of Jilin University, and conformed to the principles and procedures of the Guide for the Care and Use of Laboratory Animals.

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Tian, R., Guo, K., Wu, B. et al. Overexpression of Shrm4 promotes proliferation and differentiation of neural stem cells through activation of GABA signaling pathway. Mol Cell Biochem 463, 115–126 (2020). https://doi.org/10.1007/s11010-019-03634-4

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  • DOI: https://doi.org/10.1007/s11010-019-03634-4

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