China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (6): 2079-2087.doi: 10.16431/j.cnki.1671-7236.2022.06.008

• Physiological and Biochemical • Previous Articles     Next Articles

Research Progress of JAK/STAT Signal Pathway Regulating Intestinal Mucosal Regeneration and Helper T Cell Response

ZAN Gengxiu1, QIN Yingchao2, ZHU Chao3, WANG Xiuqi1   

  1. 1. College of Animal Science, South China Agricultural University, Guangzhou 510642, China;
    2. Guangdong Provincial Key Laboratory of Animal Nutrition Control, Guangzhou 510642, China;
    3. National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
  • Received:2021-10-12 Online:2022-06-05 Published:2022-05-27

Abstract: As the junction of the internal and external environment in the body, the intestine is susceptible to various toxic and harmful substances from outside, which leads to damage to the epithelial structure, function and microecosystem, and then reduces growth performance of animals and economic benefit.Intestinal stem cell (ISC)-driven intestinal cell renewal at the base of the crypt is the driving force for the epithelial structure and is necessary for the repair after intestinal injury.ISCs activity are synergistically regulated by various molecular signals in the ISCs microenvironment.And the Janu kinase/signal transducer and activator of transcription (JAK/STAT) pathway is a common pathway for multiple cytokine signals, which bind to tyrosine kinase-related receptors to activate JAK, and then phosphorylate STAT and trigger the transcription of target genes such as cycle-related and anti-apoptotic proteins to control ISCs proliferation, apoptosis, and differentiation fate and ultimately maintains the ordered structure of the crypt villi axis.In addition, helper T cells (Th cells) around the ISCs secrete interleukins (ILs) and interferons (IFNs) in crosstalk with the JAK/STAT signaling pathway in ISCs to achieve a rapid response of intestinal cells to injury stimuli, which accelerates ISCs division and promote intestinal epithelial regeneration.This review focused on the mechanisms of JAK/STAT-mediated ISCs in maintaining the structural and functional integrity of the intestinal epithelium and how Th cells regulate the differentiation of ISCs to functional cells.Meanwhile, the authors described abnormal changes in this signaling pathway during the occurrence of certain livestock and poultry diseases, and identify emerging research models such as intestinal organoids into the study and practice of animal intestinal development and disease diagnosis.The accurate control of JAK/STAT is expected to reveal the updating regularity of the crypt-villus axis and provide the theoretical basis for establishing the scientific nutritional technology scheme and improving intestinal health.

Key words: JAK/STAT signal pathway; intestinal stem cell; helper T cell; intestinal epithelial regeneration

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