PMID- 33559856 OWN - NLM STAT- MEDLINE DCOM- 20210215 LR - 20231213 IS - 0065-2598 (Print) IS - 0065-2598 (Linking) VI - 1290 DP - 2021 TI - IL-22 Signaling in the Tumor Microenvironment. PG - 81-88 LID - 10.1007/978-3-030-55617-4_5 [doi] AB - Interleukin (IL)-22 belongs to the IL-10 cytokine family which performs biological functions by binding to heterodimer receptors comprising a type 1 receptor chain (R1) and a type 2 receptor chain (R2). IL-22 is mainly derived from CD4+ helper T cells, CD8+ cytotoxic T cells, innate lymphocytes, and natural killer T cells. It can activate downstream signaling pathways such as signal transducer and activator of transcription (STAT)1/3/5, nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kappaB), mitogen-activated protein kinase (MAPK), and phosphoinositide 3-kinase (PI3K)-protein kinase B (AKT)-mammalian target of rapamycin (mTOR) through these heterodimer receptors. Although IL-22 is produced by immune cells, its specific receptor IL-22R1 is selectively expressed in nonimmune cells, such as hepatocytes, colonic epithelial cells, and pancreatic epithelial cells (Jiang et al. Hepatology 54(3):900-9, 2011; Jiang et al. BMC Cancer 13:59, 2013; Curd et al. Clin Exp Immunol 168(2):192-9, 2012). Immune cells do not respond to IL-22 stimulation directly within tumors, reports from different groups have revealed that IL-22 can indirectly regulate the tumor microenvironment (TME). In the present chapter, we discuss the roles of IL-22 in malignant cells and immunocytes within the TME, meanwhile, the potential roles of IL-22 as a target for drug discovery will be discussed. FAU - Jiang, Runqiu AU - Jiang R AD - Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, People's Republic of China. AD - Medical School of Nanjing University, Nanjing, People's Republic of China. FAU - Sun, Beicheng AU - Sun B AD - Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, People's Republic of China. sunbc@nju.edu.cn. LA - eng PT - Journal Article PL - United States TA - Adv Exp Med Biol JT - Advances in experimental medicine and biology JID - 0121103 RN - 0 (Interleukins) SB - IM MH - Interleukins MH - *Phosphatidylinositol 3-Kinases MH - Signal Transduction MH - *Tumor Microenvironment MH - Interleukin-22 OTO - NOTNLM OT - Breast cancer OT - Colorectal cancer OT - Drug discovery OT - Gastric cancer OT - IL-22 OT - Innate lymphocyte OT - JAK/STAT OT - Leukemia OT - Liver cancer OT - Lung cancer OT - Lymphoma OT - NKT cell OT - Pancreatic cancer OT - T cell OT - Tumor microenvironment EDAT- 2021/02/10 06:00 MHDA- 2021/02/16 06:00 CRDT- 2021/02/09 08:49 PHST- 2021/02/09 08:49 [entrez] PHST- 2021/02/10 06:00 [pubmed] PHST- 2021/02/16 06:00 [medline] AID - 10.1007/978-3-030-55617-4_5 [doi] PST - ppublish SO - Adv Exp Med Biol. 2021;1290:81-88. doi: 10.1007/978-3-030-55617-4_5.