Inflammatory signals rise in human colon support cells
Comparisons of lab-grown cells from normal, colitis and cancer samples found inflammatory gene activity alongside signals of senescence, a state in which cells stop dividing.
Limit: CXCL8 expression measures inflammatory activity, not cancer progression
Edited by Boris Djordjevic · AgingResearch.News
Human colon fibroblasts, cells that support surrounding tissue, were grown in the lab from normal colon, ulcerative colitis and colon cancer samples. Ulcerative colitis is a chronic inflammatory bowel disease. Researchers compared gene activity and tested responses to inflammatory and bacterial signals.
Cells from diseased samples showed gene activity linked to inflammation and senescence. Colitis-associated cells produced more CXCL8, a protein that attracts immune cells, than normal colon fibroblasts. Immune signals and bacterial stimuli increased CXCL8 in cell experiments. Experiments that reprogrammed cells through a stem-cell state indicated that colitis-derived fibroblasts retained an inflammatory memory. The authors suggest that persistent patterns of gene regulation may sustain their elevated CXCL8 response.
Why it matters
The study addresses whether senescence-related inflammatory signals could help identify the path from chronic bowel inflammation to colon cancer.
Caveats
The human-cell findings came from laboratory studies, which cannot establish whether these signals predict cancer progression in people. This preprint has not been peer-reviewed, and the reprogramming experiments used limited samples.
The paper
Inflammatory Stromal Aging in Ulcerative Colitis and Colitis-Associated Cancer
Cleveland State University
bioRxiv, May 20, 2026, Open access, Preprint, not peer-reviewed
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