Journal
GENOMICS
Volume 113, Issue 2, Pages 633-645Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ygeno.2021.01.006
Keywords
Cryptorchidism; 3 ' UTR shortening; piRNA (Piwi-interacting RNA)
Funding
- Science and Technology Innovation and Demonstration Promotion Project [MS12019001]
- Nantong, Jiangsu, China
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The study found that piRNA expression related to repeated elements is globally downregulated in testicular tissues of cryptorchidism patients, and mRNAs have a global 3'UTR shortening. Genes with shortened 3'UTR are highly enriched in vascular endothelial growth and protein ubiquitination, and tend to be up-regulated in cryptorchidism.
Background: Cryptorchidism is the most common congenital defect in children's genitourinary system. Decades of research have identified both environmental and genetic factors contribute to the etiology. Methods: Small-RNA/mRNA-seq were performed on testicular tissues from cryptorchidism patients. Downstream analysis included mRNA expression, piRNA expression and miRNA expression. Results: We find a global downregulation of repeated element related piRNA expression as well as a global 3'UTR shortening of mRNAs in patients with cryptorchidism. We also find that genes with shortened 3'UTR which are highly enriched in vascular endothelial growth and protein ubiquitination, tend to be up-regulated in cryptorchidism. These results indicate that boys with cryptorchidism may not have normal piRNA functions to protect developmental tissues from transposon invasion. Dysregulated shortened 3'UTR genes may affect normal testicular tissue development. Conclusion: In summary, our findings also provided the first landscape of gene regulation in cryptorchidism, especially in terms of post-transcriptional regulations.
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