Dysregulation of lncRNA and circRNA Expression in Mouse Testes after Exposure to Triptolide

Author(s): Suping Xiong, Yanting Li, Yang Xiang, Na Peng, Chunmiao Shen, Yanqiu Cai, Dandan Song, Peng Zhang, Xiaolong Wang, Xuihui Zeng, Xiaoning Zhang*.

Journal Name: Current Drug Metabolism

Volume 20 , Issue 8 , 2019


Graphical Abstract:


Abstract:

Background: Triptolide has been shown to exert various pharmacological effects on systemic autoimmune diseases and cancers. However, its severe toxicity, especially reproductive toxicity, prevents its widespread clinical use for people with fertility needs. Noncoding RNAs including lncRNAs and circRNAs are novel regulatory molecules that mediate a wide variety of physiological activities; they are crucial for spermatogenesis and their dysregulation might cause male infertility. However, whether they are involved in triptolide-induced reproductive toxicity is completely unknown.

Methods: After exposure of mice to triptolide, the total RNAs were used to investigate lncRNA/circRNA/mRNA expression profiles by strand-specific RNA sequencing at the transcriptome level to help uncover RNA-related mechanisms in triptolide-induced toxicity.

Results: Triptolide significantly decreased testicular weight, damaged testis and sperm morphology, and reduced sperm motility and density. Remarkable deformities in sperm head and tail were also found in triptolide-exposed mice. At the transcriptome level, the triptolide-treated mice exhibited aberrant expression profiles of lncRNAs/circRNAs/mRNAs. Gene Ontology and pathway analyses revealed that the functions of the differentially expressed lncRNA targets, circRNA cognate genes, and mRNAs were closely linked to many processes involved in spermatogenesis. In addition, some lncRNAs/circRNAs were greatly upregulated or inducibly expressed, implying their potential value as candidate markers for triptolide-induced male reproductive toxicity.

Conclusion: This study provides a preliminary database of triptolide-induced transcriptome, promotes understanding of the reproductive toxicity of triptolide, and highlights the need for research on increasing the medical efficacy of triptolide and decreasing its toxicity.

Keywords: Triptolide, lncRNA, circRNA, RNA sequencing, spermatogenesis, male infertility.

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Article Details

VOLUME: 20
ISSUE: 8
Year: 2019
Page: [665 - 673]
Pages: 9
DOI: 10.2174/1389200220666190729130020

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