Summary
This study elucidates the mechanism by which ROR1, a receptor tyrosine kinase-like orphan receptor activated in lung adenocarcinoma, suppresses pro-apoptotic ASK1-p38 signalling. Through cell-based and in vitro kinase assays, the authors demonstrate that ROR1 directly binds ASK1 via its C-terminal serine/threonine-rich domain and inhibits ASK1 auto-phosphorylation in a kinase-activity-dependent manner, thereby reducing apoptotic signalling and enhancing cancer cell survival.
UK applicability
This mechanistic finding from laboratory studies of human lung cancer cell lines has limited direct applicability to UK farming, food systems, or agricultural practice, as it addresses tumour biology rather than farm production, soil health, or food nutrient quality.
Key measures
ASK1 auto-phosphorylation at threonine 845; p38 phosphorylation at threonine 180 and tyrosine 182; MKK6 phosphorylation; sub-G1 cell population; cell growth inhibition in PC-9 and NCI-H1975 lung adenocarcinoma cell lines and MSTO-211H cells
Outcomes reported
The study demonstrated that ROR1 physically interacts with ASK1 and suppresses ASK1-mediated pro-apoptotic signalling in lung adenocarcinoma cell lines. ROR1's kinase activity was found to be required for effective inhibition of ASK1 auto-phosphorylation and downstream p38 phosphorylation under both basal and oxidative stress conditions.
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