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Article

Polypyrimidine tract‑binding protein 1 regulates the Sertoli cell blood‑testis barrier by promoting the expression of tight junction proteins

  • Authors:
    • Zhe Yang
    • Zhi Liu
    • Yanping Yang
    • Yanping Dai
    • Xiaoqin Gao
  • View Affiliations / Copyright

    Affiliations: Department of Histology and Embryology, School of Basic Medicine, Guizhou Medical University, Guiyang, Guizhou 550025, P.R. China, Department of Urinary Surgery, The Second Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Kaili, Guizhou 556000, P.R. China
  • Article Number: 847
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    Published online on: June 7, 2021
       https://doi.org/10.3892/etm.2021.10279
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Abstract

Sertoli cells (SCs) are an important component of spermatogenic tubules. The blood‑testis barrier (BTB) is composed of SCs and is necessary for the development and maturity of spermatogenic cells. When the tight connection between SCs is destroyed, the BTB loses its integrity, leading to impaired spermatogenesis. Polypyrimidine tract‑binding protein 1 (PTBP1) is a key protein involved in precursor mRNA splicing and selective splicing events, which directly affects tumor cell proliferation and influences the formation of the blood‑tumor barrier by regulating the expression levels of tight junction‑associated proteins. The present study revealed that the expression of PTBP1 was downregulated following a decrease in spermatogenic activity at the phase of senescence. TM4 cells were transfected with lentivirus‑short hairpinRNA‑PTBP1 to evaluate the effect of silencing PTBP1 on the expression levels of tight junction proteins and the integrity of tight junctions between adjacent SCs. Western blot analysis indicated that the expression levels of Zonula occludens 1, occludin and claudin‑5 decreased significantly due to silencing of PTBP1 in SCs. Through detecting trans‑epithelial electrical resistance, it was revealed that silencing of PTBP1 broke the integrity of tight junctions between adjacent SCs. The results suggested that PTBP1 maintained the integrity of the BTB by promoting the expression levels of tight junction‑associated proteins and revealed the possible mechanism of PTBP1 in regulating spermatogenesis.
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Copy and paste a formatted citation
Spandidos Publications style
Yang Z, Liu Z, Yang Y, Dai Y and Gao X: Polypyrimidine tract‑binding protein 1 regulates the Sertoli cell blood‑testis barrier by promoting the expression of tight junction proteins. Exp Ther Med 22: 847, 2021.
APA
Yang, Z., Liu, Z., Yang, Y., Dai, Y., & Gao, X. (2021). Polypyrimidine tract‑binding protein 1 regulates the Sertoli cell blood‑testis barrier by promoting the expression of tight junction proteins. Experimental and Therapeutic Medicine, 22, 847. https://doi.org/10.3892/etm.2021.10279
MLA
Yang, Z., Liu, Z., Yang, Y., Dai, Y., Gao, X."Polypyrimidine tract‑binding protein 1 regulates the Sertoli cell blood‑testis barrier by promoting the expression of tight junction proteins". Experimental and Therapeutic Medicine 22.2 (2021): 847.
Chicago
Yang, Z., Liu, Z., Yang, Y., Dai, Y., Gao, X."Polypyrimidine tract‑binding protein 1 regulates the Sertoli cell blood‑testis barrier by promoting the expression of tight junction proteins". Experimental and Therapeutic Medicine 22, no. 2 (2021): 847. https://doi.org/10.3892/etm.2021.10279
Copy and paste a formatted citation
x
Spandidos Publications style
Yang Z, Liu Z, Yang Y, Dai Y and Gao X: Polypyrimidine tract‑binding protein 1 regulates the Sertoli cell blood‑testis barrier by promoting the expression of tight junction proteins. Exp Ther Med 22: 847, 2021.
APA
Yang, Z., Liu, Z., Yang, Y., Dai, Y., & Gao, X. (2021). Polypyrimidine tract‑binding protein 1 regulates the Sertoli cell blood‑testis barrier by promoting the expression of tight junction proteins. Experimental and Therapeutic Medicine, 22, 847. https://doi.org/10.3892/etm.2021.10279
MLA
Yang, Z., Liu, Z., Yang, Y., Dai, Y., Gao, X."Polypyrimidine tract‑binding protein 1 regulates the Sertoli cell blood‑testis barrier by promoting the expression of tight junction proteins". Experimental and Therapeutic Medicine 22.2 (2021): 847.
Chicago
Yang, Z., Liu, Z., Yang, Y., Dai, Y., Gao, X."Polypyrimidine tract‑binding protein 1 regulates the Sertoli cell blood‑testis barrier by promoting the expression of tight junction proteins". Experimental and Therapeutic Medicine 22, no. 2 (2021): 847. https://doi.org/10.3892/etm.2021.10279
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