Transcriptional networks underlying tumour plasticity in small-cell lung cancer
Single-cell multi-omics of small-cell lung cancer resolved distinct cell states along the neuroendocrine-to-nonneuroendocrine axis, including a previously unrecognised Intermediate state of low-identity immunogenic cells that serves as an obligatory route in lineage transition. A Boolean Bayes model of transcription factor networks (BoBa-T) predicted state regulators, and RORB was validated as a gatekeeper of the neuroendocrine state: its inactivation pushes NE cells into the Intermediate state, upregulates immunogenic programs, and inhibits tumour growth in immunocompetent hosts.
Why it matters: Identifies an obligatory immunogenic intermediate state and RORB as a druggable gatekeeper of SCLC lineage plasticity.