Int J Biol Sci 2020; 16(2):251-263. doi:10.7150/ijbs.38214 This issue Cite

Research Paper

LRRC75A antisense lncRNA1 knockout attenuates inflammatory responses of bovine mammary epithelial cells

Xixi Wang*, Hao Wang*, Ruiqi Zhang, Dan Li, Ming-Qing Gao

College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China.
*These authors contributed equally to this work.

Citation:
Wang X, Wang H, Zhang R, Li D, Gao MQ. LRRC75A antisense lncRNA1 knockout attenuates inflammatory responses of bovine mammary epithelial cells. Int J Biol Sci 2020; 16(2):251-263. doi:10.7150/ijbs.38214. https://www.ijbs.com/v16p0251.htm
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Abstract

Graphic abstract

Long noncoding RNAs (lncRNAs) play multiple key roles during inflammatory processes. In this study, a novel lncRNA identified by the high-throughput sequencing analysis was found significantly down-regulated in Escherichia coli-introduced cell model of bovine mastitis. Given that this lncRNA consists of the antisense of leucine-rich repeat-containing protein 75A (LRRC75A), it was named LRRC75A antisense lncRNA1 (LRRC75A-AS1). The expression of LRRC75A-AS1 was down-regulated in bovine mammary epithelial cells and mammary tissues under inflammatory condition. Knockout (KO) of LRRC75A-AS1 by CRISPR-Cas9 system in bovine mammary alveolar cell-T (MAC-T) cell line could enhance expressions of tight junction (TJ) proteins Claudin-1, Occludin and ZO-1, reduce cell monolayer permeability, and inhibit Staphylococcus aureus adhesion and invasion. Meanwhile, it also down-regulated expressions of inflammatory factors and attenuated activation of NF-κB pathway. Similarly, knockdown of LRRC75A caused the changes as LRRC75A-AS1 KO did, while overexpression of LRRC75A enabled the opposite effects. TJ of epithelioid cells barriers the pathogenic microorganisms outside during inflammation, in which LRRC75A-AS1 can regulate the expression of TJ proteins through LRRC75A, affecting the development of inflammation.

Keywords: bovine mammary epithelial cell, lncRNA, LRRC75A-AS1, LRRC75A, bovine mastitis


Citation styles

APA
Wang, X., Wang, H., Zhang, R., Li, D., Gao, M.Q. (2020). LRRC75A antisense lncRNA1 knockout attenuates inflammatory responses of bovine mammary epithelial cells. International Journal of Biological Sciences, 16(2), 251-263. https://doi.org/10.7150/ijbs.38214.

ACS
Wang, X.; Wang, H.; Zhang, R.; Li, D.; Gao, M.Q. LRRC75A antisense lncRNA1 knockout attenuates inflammatory responses of bovine mammary epithelial cells. Int. J. Biol. Sci. 2020, 16 (2), 251-263. DOI: 10.7150/ijbs.38214.

NLM
Wang X, Wang H, Zhang R, Li D, Gao MQ. LRRC75A antisense lncRNA1 knockout attenuates inflammatory responses of bovine mammary epithelial cells. Int J Biol Sci 2020; 16(2):251-263. doi:10.7150/ijbs.38214. https://www.ijbs.com/v16p0251.htm

CSE
Wang X, Wang H, Zhang R, Li D, Gao MQ. 2020. LRRC75A antisense lncRNA1 knockout attenuates inflammatory responses of bovine mammary epithelial cells. Int J Biol Sci. 16(2):251-263.

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