J Cancer 2019; 10(2):367-377. doi:10.7150/jca.27947

Research Paper

Alteration of Adaptive Immunity in a Colorectal Peritoneal Carcinomatosis Model

Rongchen Shi1*, Wei Xiang1*, Xia Kang1, Lili Zhang2, Jinping Wang3, Hongming Miao1✉, Fengtian He1✉

1. Department of Biochemistry and Molecular Biology, Third Military Medical University (Army Medical University), Chongqing 400038, China
2. Department of Military Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing 400038, China
3. Department of Neurology, Chongqing Emergency Medical Center, Chongqing 400014, China
*Co-first authors

Abstract

Colorectal cancer (CRC) usually gives rise to transcoelomic spread and ultimately causes peritoneal carcinomatosis (PC). However, mechanism studies, especially the immunological basis of colorectal PC, are rarely revealed due to lack of a suitable PC model. Here we selected a mouse colorectal cancer cell line MC-38 for intraperitoneal inoculation in the C57BL/6 mice to mimic the development of colorectal PC. We demonstrated that the injected CRC cells preferentially and rapidly migrated and colonized in the visceral fat tissues, but not in other visceral organs. With flow cytometric analysis, we found the proportions of spleen T cells and B cells were not affected by PC progression, while the ratios of blood CD4+ and CD8+ T cells were largely influenced. Especially, the quantity or activity of CD4+ and CD8+ T cells in visceral fats were intimately regulated by PC development. Taken together, we successfully constructed a colorectal PC model in immune-competent mice and revealed the alteration of adaptive immunity in PC development. Our study might potentiate the research and therapy strategies of colorectal PC.

Keywords: peritoneal carcinomatosis, adaptive immunity, colorectal cancer

This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY-NC) license (https://creativecommons.org/licenses/by-nc/4.0/). See http://ivyspring.com/terms for full terms and conditions.
How to cite this article:
Shi R, Xiang W, Kang X, Zhang L, Wang J, Miao H, He F. Alteration of Adaptive Immunity in a Colorectal Peritoneal Carcinomatosis Model. J Cancer 2019; 10(2):367-377. doi:10.7150/jca.27947. Available from http://www.jcancer.org/v10p0367.htm