Inhibition of ADAM9 promotes the selective degradation of KRAS and sensitizes pancreatic cancers to chemotherapy

Yu Kai Huang, Wei Chung Cheng, Ting Ting Kuo, Juan Cheng Yang, Yang Chang Wu, Heng Hsiung Wu, Chia Chien Lo, Chih Ying Hsieh, Sze Ching Wong, Chih Hao Lu, Wan Ling Wu, Shih Jen Liu, Yi Chuan Li, Ching Chan Lin, Chia Ning Shen, Mien Chie Hung, Jaw Town Lin, Chun Chieh Yeh*, Yuh Pyng Sher*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Kirsten rat sarcoma virus (KRAS) signaling drives pancreatic ductal adenocarcinoma (PDAC) malignancy, which is an unmet clinical need. Here, we identify a disintegrin and metalloproteinase domain (ADAM)9 as a modulator of PDAC progression via stabilization of wild-type and mutant KRAS proteins. Mechanistically, ADAM9 loss increases the interaction of KRAS with plasminogen activator inhibitor 1 (PAI-1), which functions as a selective autophagy receptor in conjunction with light chain 3 (LC3), triggering lysosomal degradation of KRAS. Suppression of ADAM9 by a small-molecule inhibitor restricts disease progression in spontaneous models, and combination with gemcitabine elicits dramatic regression of patient-derived tumors. Our findings provide a promising strategy to target the KRAS signaling cascade and demonstrate a potential modality to enhance sensitivity to chemotherapy in PDAC.

Original languageEnglish
Pages (from-to)400-419
Number of pages20
JournalNature Cancer
Volume5
Issue number3
DOIs
StatePublished - Mar 2024

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