IFN-α/β-mediated NK2R expression is related to the malignancy of colon cancer cells.

Cancer science 2022 Aug

filter terms:

Neurokinin 2 receptor (NK2R), a G protein-coupled receptor for neurokinin A (NKA), a tachykinin family member, regulates various physiological functions including pain response, relaxation of smooth muscle, dilation of blood vessels, and vascular permeability. However, the precise role and regulation of NK2R expression in cancer cells have not been fully elucidated. In this study, we found that high NK2R gene expression was correlated with the poor survival of colorectal cancer patients, and Interferon (IFN-α/β) stimulation significantly enhanced NK2R gene expression level of colon cancer cells in a Janus kinas 1/2 (JAK 1/2)-dependent manner. NKA stimulation augmented viability/proliferation and phosphorylation of Extracellular-signal-regulated kinase 1/2 (ERK1/2) levels of IFN-α/β-treated colon cancer cells and NK2R blockade by using a selective antagonist reduced the proliferation in vitro. Administration of an NK2R antagonist alone or combined with polyinosinic-polycytidylic acid, a synthetic analog of double-stranded RNA, to CT26-bearing mice significantly suppressed tumorigenesis. NK2R-overexpressing CT26 cells showed enhanced tumorigenesis and metastatic colonization in both lung and liver after the inoculation into mice. These findings indicate that IFN-α/β-mediated NK2R expression is related to the malignancy of colon cancer cells, suggesting that NK2R blockade may be a promising strategy for colon cancers. © 2022 The Authors. Cancer Science published by John Wiley & Sons Australia, Ltd on behalf of Japanese Cancer Association.

Citation

Huihui Xiang, Yujiro Toyoshima, Weidong Shen, Xiangdong Wang, Naoki Okada, Shuhei Kii, Ko Sugiyama, Toshihiro Nagato, Hiroya Kobayashi, Kazuho Ikeo, Shinichi Hashimoto, Mishie Tanino, Akinobu Taketomi, Hidemitsu Kitamura. IFN-α/β-mediated NK2R expression is related to the malignancy of colon cancer cells. Cancer science. 2022 Aug;113(8):2513-2525