Resumo

LI, Hongyi; ZHANG, Mao  e  LIU, Wenjuan. Effect of microRNA, miR-215, on gene expression and metabolism of porcine intestinal epithelial cells. S. Afr. j. anim. sci. [online]. 2022, vol.52, n.6, pp.886-899. ISSN 2221-4062.  http://dx.doi.org/10.4314/sajas.v52i6.14.

MiR-215 maintains a high level of expression in healthy pig intestine and is decreased in lesions or injuries. To clarify the influence of miR-215 on the porcine intestine, miR-215 mimic/inhibitor was transfected into the intestinal porcine epithelial cell line, J2 (IPEC-J2) to overexpress or suppress the expression of miR-215. The treated cells were subjected to various functional assays. The effect of miR-215 on global gene expression was detected using high-throughput sequencing on the BGISEQ-500 platform; cell proliferation was evaluated using a Cell Counting Kit-8 (CCK-8); and the role of miR-215 on cellular metabolism was tested using non-targeted metabonomics and liquid chromatography with tandem mass spectrometry (LC-MS/MS) analysis. Our results revealed that miR-215 promoted cell proliferation in IPEC-J2, up-regulated the expression of the ribosomal protein family, and down-regulated the expression of oncogenesis-related genes and tumour-suppressor genes. Results of the RNA sequencing and the metabonomics detection reveal that miR-215 affects the PI3K-Akt signalling pathway. Our results contribute to further research on miR-215 in the regulation of barrier function and metabolism in the porcine intestine.

Palavras-chave : PI3K-Akt; proliferation; RNA-Sequencing.

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