Abstract
Lung squamous cell carcinoma (LUSC) represents a major subtype of lung cancer with limited treatment options. KMT2D is one of the most frequently mutated genes in LUSC (>20%), and yet its role in LUSC oncogenesis remains unknown. Here, we identify KMT2D as a key regulator of LUSC tumorigenesis wherein Kmt2d deletion transforms lung basal cell organoids to LUSC. Kmt2d loss increases activation of receptor tyrosine kinases (RTKs), EGFR and ERBB2, partly through reprogramming the chromatin landscape to repress the expression of protein tyrosine phosphatases. These events provoke a robust elevation in the oncogenic RTK-RAS signaling. Combining SHP2 inhibitor SHP099 and pan-ERBB inhibitor afatinib inhibits lung tumor growth in Kmt2d-deficient LUSC murine models and in patient-derived xenografts (PDXs) harboring KMT2D mutations. Our study identifies KMT2D as a pivotal epigenetic modulator for LUSC oncogenesis and suggests that KMT2D loss renders LUSC therapeutically vulnerable to RTK-RAS inhibition.
Original language | English (US) |
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Pages (from-to) | 88-105.e8 |
Journal | Cancer cell |
Volume | 41 |
Issue number | 1 |
DOIs | |
State | Published - Jan 9 2023 |
Funding
We thank NYU Langone Preclinical Imaging Laboratory (partially funded by P30CA016087 and P41 EB017183 ) for MRI; the Genome Technology Center (partially supported by P30CA016087 ) for library preparation and sequencing; and the Experimental Pathology Research Laboratory (partially funded by P30CA016087 ) for immunohistochemistry. This work is supported by U01 CA233084 (K.-K.W.); R01 CA219670 (K.-K.W.); R01 CA216188 (K.-K.W.); R01 CA205150 (K.-K.W.); R01 CA166480 (K.-K.W.); P01 CA154303 (K.-K.W.); P01 CA098101 (A.K.R., A.J.B., J.A.D., and K.-K.W.; and the Molecular Pathology and Biostatistics Shared Resources ); P30 CA013696 (A.K.R.); and the International Cooperation Project of Chinese Academy of Sciences 153D31KYSB20190035 (H.J.).
Keywords
- EGFR
- ERBB2
- KMT2D
- SHP2
- lung squamous cell carcinoma
- organoids
ASJC Scopus subject areas
- Oncology
- Cancer Research