The abstract is read at the publisher; the summary is JClub's.
CD47-enriched extracellular vesicles in head and neck squamous cell carcinoma are linked to poor cetuximab response by stabilizing integrin-dependent IGF1R signaling and rewiring toward IGF1R.
- Why it matters: Resistance to EGFR-targeted antibodies is often treated as tumor-intrinsic, but how intercellular communication spreads cetuximab resistance in HNSCC is unclear.
- What they did: The study tracked systemically circulating CD47-enriched EVs, tested how CD47 stabilizes integrin-dependent IGF1R signaling, and used EV-release inhibition to reduce CD47 cargo loading and assess cetuximab efficacy.
- The result: EV-mediated CD47 transfer enhanced IGF-1R activity and conferred resistance cell-nonautonomously, remodeling the tumor immune microenvironment, and blocking EV release reduced CD47 loading while enhancing cetuximab efficacy.
The findingWhy it mattersWhat they didThe result
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