AI Article Synopsis
- CYRI-B is crucial for regulating cell movement in normal cells, but its role in gastric cancer is underexplored.
- In gastric cancer, lower levels of CYRI-B are linked to advanced tumor stages and worse patient outcomes, with its expression influenced by collagen type I through the DDR1 receptor.
- The study suggests that reducing CYRI-B leads to increased cancer cell movement and invasiveness by activating the Rac1-STAT3 pathway, potentially offering new targets for treating tumor spread.
Article Abstract
Background: CYRI-B plays key roles in regulating cell motility in nontumor cells. However, the role and function of CYRI-B have rarely been studied in cancer cells, including gastric cancer. The purpose of this study was to investigate the clinical significance, biological function and underlying molecular mechanism of CYRI-B in gastric cancer.
Method: CYRI-B protein levels were detected by immunohistochemistry (IHC) and western blotting (WB). Gastric cancer cells and organoid models were evaluated to explore the correlation of CYRI-B with collagen type I. The function of CYRI-B in proliferation, migration, invasion in gastric cancer was evaluated by in vitro and in vivo experiments.
Result: CYRI-B protein levels were downregulated in gastric cancer. Low expression of CYRI-B was related to later tumor stage and poorer prognosis. CYRI-B expression was reduced when cells were cultured in collagen type I, which was mediated by collagen receptor DDR1. Knockdown of CYRI-B promoted migration, invasion and EMT in vivo and in vitro. Mechanistically, knockdown of CYRI-B activated the Rac1-STAT3 pathway.
Conclusion: Our findings showed that CYRI-B plays an important role in the tumor microenvironment, and is associated with malignant characteristics acquired by gastric cancer. This study may provide new targets for future therapeutic interventions for tumor metastasis.
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| http://dx.doi.org/10.1016/j.yexcr.2022.113453 | DOI Listing |
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