The research demonstrates that the integrated stress response acts as a crucial driver of lung adenocarcinoma progression, directing tumor cells toward aggressive, undifferentiated, and high-plasticity states through key signaling axes like p-eIF2α and ATF4. By utilizing advanced single-cell technologies and mouse models, the findings reveal that this stress-adaptation mechanism promotes intratumor heterogeneity and lineage reprogramming, whereas inhibiting the pathway suppresses tumor expansion and alters cellular evolutionary trajectories. Furthermore, disruption of these stress pathways results in mitochondrial dysfunction and a failure to acquire advanced disease phenotypes, highlighting how tumors co-opt these adaptive mechanisms to survive harsh microenvironments. Ultimately, the lung transition cluster serves as a critical fate-decision checkpoint where sustained stress signaling enables malignancy, while genetic or partial impairment restricts tumor evolution and improves prognostic understanding.
References:
Diao S, Zou J Y, Wang S, et al. Integrated stress response couples mitochondrial fitness with lineage reprogramming to drive cancer evolution[J]. Nature Cell Biology, 2026, 28(7): 1529-1544.
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