PDGF-AA activates AKT and ERK signaling for testicular interstitial Leydig cell growth via primary cilia

Yung Chieh Tsai, Tian Ni Kuo, Yu Ying Chao, Pei Rong Lee, Ruei Ci Lin, Xiao Yi Xiao, Bu Miin Huang, Chia Yih Wang

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)

摘要

Testes control the development of male reproductive system. The testicular interstitial Leydig cells (Leydig cells) synthesize testosterone for promoting spermatogenesis and secondary sexual characteristics. Type A platelet-derived growth factor (PDGF-AA) is one of the most important growth factors in regulating Leydig cell growth and function. Knockout of PDGF-AA or its congenital receptor PDGFR-α leads to poor testicular development caused by reducing Leydig cell numbers, supporting PDGF-AA/PDGFR-α signaling regulates Leydig cell development. Primary cilium is a cellular antenna that functions as an integrative platform to transduce extracellular signaling for proper development and differentiation. Several receptors including PDGFR-α are observed on primary cilia for initiating signaling cascades in distinct cell types. Here we showed that PDGF-AA/PDGFR-α signaling promoted Leydig cells growth, migration, and invasion via primary cilia. Upon PDGF-AA treatment, AKT and ERK signaling were activated to regulate these cellular events. Interestingly, active AKT and ERK were detected around the base of primary cilia. Depletion of ciliary genes (IFT88 and CEP164) alleviated PDGF-AA-activated AKT and ERK, thus reducing Leydig cell growth, migration, and invasion. Thus, our study not only reveals the function of PDGF-AA/PDGFR-α signaling in maintaining testicular physiology but also uncovers the role of primary cilium and downstream signaling in regulating Leydig cell development.

原文English
頁(從 - 到)89-102
頁數14
期刊Journal of Cellular Biochemistry
124
發行號1
DOIs
出版狀態Published - 2023 1月

All Science Journal Classification (ASJC) codes

  • 生物化學
  • 分子生物學
  • 細胞生物學

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