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</script>A large body of evidence indicates that chronic inflammation is one of several key risk factors for cancer initiation, progression, and metastasis. However, the underlying mechanisms responsible for the contribution of inflammation and inflammatory mediators to cancer remain elusive. Here, we present genetic evidence that loss of CXCR2 dramatically suppresses chronic colonic inflammation and colitis-associated tumorigenesis through inhibiting infiltration of myeloid-derived suppressor cells (MDSCs) into colonic mucosa and tumors in a mouse model of colitis-associated cancer. CXCR2 ligands were elevated in inflamed colonic mucosa and tumors and induced MDSC chemotaxis. Adoptive transfer of wild-type MDSCs into Cxcr2(-/-) mice restored AOM/DSS-induced tumor progression. MDSCs accelerated tumor growth by inhibiting CD8(+) T cell cytotoxic activity.
Cytotoxicity, Immunologic, Cancer Research, Carcinogenesis, Chemokine CXCL1, Azoxymethane, CD8-Positive T-Lymphocytes, Dinoprostone, Mice, Animals, Humans, Myeloid Cells, Intestinal Mucosa, Cells, Cultured, Mice, Knockout, Mice, Inbred BALB C, Chemotaxis, Dextran Sulfate, Cell Biology, Colitis, Adoptive Transfer, Oncology, Inflammation Mediators, Colorectal Neoplasms
Cytotoxicity, Immunologic, Cancer Research, Carcinogenesis, Chemokine CXCL1, Azoxymethane, CD8-Positive T-Lymphocytes, Dinoprostone, Mice, Animals, Humans, Myeloid Cells, Intestinal Mucosa, Cells, Cultured, Mice, Knockout, Mice, Inbred BALB C, Chemotaxis, Dextran Sulfate, Cell Biology, Colitis, Adoptive Transfer, Oncology, Inflammation Mediators, Colorectal Neoplasms
| citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 422 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 0.1% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 1% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 1% |
