Journal of Southern Medical University

Journal of Southern Medical University ›› 2021, Vol. 41 ›› Issue (10): 1588-1592.doi: 10.12122/j.issn.1673-4254.2021.10.20

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G-protein coupled receptor Smo positively regulates proliferation and migration of adult neural stem cells in vitro

QIU Xinxia, CHEN He, FENG Delong, DONG Weiren   

  1. Experiment Teaching and Administration Center, Institute of Oncology, Southern Medical University, Guangzhou 510515, China; Department of Neurosurgery, Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China
  • Online:2021-10-20 Published:2021-11-11

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Abstract: Objective To investigate the role of G-protein coupled receptor Smoothened (Smo) in regulating proliferation and migration of adult neural stem cells (ANSCs) and explore the underlying mechanism. Methods Cultured ANSCs were treated with purmorphamine (PM, an agonist of Smo) or cyclopamine (CPM, an inhibitor of Smo), and the changes in cell proliferation migration abilities were assessed using cell counting kit-8 (CCK8) assay and wound healing assay, respectively. The mRNA expressions of membrane receptor Patched 1 (Ptch1), Smo, glioma-associated oncogene homolog 1 (Gli1), axon guidance cue slit1 (Slit1) and brain-derived neurotrophic factor (BDNF) in the treated cells were detected using real-time quantitative PCR (RT-PCR). Results PM significantly promoted the proliferation (P<0.01) and migration of ANSCs (P<0.01), and up-regulated the mRNA expressions of Ptch1, Smo, Gli1, Slit1 and BDNF. Treatment with CPM significantly inhibited the proliferation and migration of ANSCs. Conclusion Modulating Smo activity can positively regulate the proliferation and migration of ANSCs possibly by regulating the expressions of BDNF and Slit1.

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