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Chang L, Xu L, Tian Y, Liu Z, Song M, Li S, Zhang X, Chen Y, Hao Q, Lu Y, Zhen Y. NLRP6 deficiency suppresses colorectal cancer liver metastasis growth by modulating M-MDSC-induced immunosuppressive microenvironment. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167035. [PMID: 38278335 DOI: 10.1016/j.bbadis.2024.167035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 01/14/2024] [Accepted: 01/17/2024] [Indexed: 01/28/2024]
Abstract
Colorectal cancer liver metastasis (CRLM) a profound influence on the prognosis of patients with colorectal cancer (CRC), prompting a comprehensive inquiry into its underlying mechanisms. Amidst the multifaceted tumor microenvironment, myeloid-derived suppressor cells (MDSCs) have emerged as pivotal orchestrators of immune modulation. However, their specific contributions to the CRLM have not been explored. The role of NLRP6, a member of the NOD-like receptor family, is of interest. Employing a liver metastasis model, our investigation revealed a heightened accumulation of monocytic MDSCs (M-MDSCs) within metastatic sites, culminating in an immunosuppressive milieu characterized by depleted CD8+ T cell populations. Remarkably, the absence of NLRP6 disrupts this intricate immunosuppressive network, highlighting its nuanced role in sculpting the trajectory of CRLM. This study elucidates the interplay between NLRP6 and MDSCs, potentially guiding novel therapeutic strategies to recalibrate the immune microenvironment in CRLM and enhance patient outcomes.
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Affiliation(s)
- Liangzheng Chang
- Department of Colorectal Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, China; Guizhou Medical University, Guiyang, Guizhou 550004, China
| | - Lei Xu
- Department of Colorectal Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, China; Guizhou Medical University, Guiyang, Guizhou 550004, China
| | - Yuying Tian
- Inner Mongolia Medical University, Hohhot, Inner Mongolia 010107, China
| | - Zherui Liu
- Peking University 302 Clinical Medical School, Beijing 100039, China; Comprehensive Liver Cancer Center, The Fifth Medical Center of PLA General Hospital, Beijing 100039, China
| | - Meiru Song
- The Fifth Clinical Medical College of Anhui Medical University, Beijing 100039, China
| | - Shuang Li
- Peking University 302 Clinical Medical School, Beijing 100039, China; Comprehensive Liver Cancer Center, The Fifth Medical Center of PLA General Hospital, Beijing 100039, China
| | - Xinfeng Zhang
- The Fifth Clinical Medical College of Anhui Medical University, Beijing 100039, China
| | - Yue Chen
- Guizhou Medical University, Guiyang, Guizhou 550004, China
| | - Qiuyao Hao
- Department of Colorectal Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, China; Guizhou Medical University, Guiyang, Guizhou 550004, China
| | - Yinying Lu
- Guizhou Medical University, Guiyang, Guizhou 550004, China; Peking University 302 Clinical Medical School, Beijing 100039, China; The Fifth Clinical Medical College of Anhui Medical University, Beijing 100039, China; Comprehensive Liver Cancer Center, The Fifth Medical Center of PLA General Hospital, Beijing 100039, China.
| | - Yunhuan Zhen
- Department of Colorectal Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, China; Guizhou Medical University, Guiyang, Guizhou 550004, China.
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