Abstract
Tyrosine kinase inhibitor (TKI) and immune checkpoint inhibitor (ICI) combination therapy is emerging as a major therapeutic strategy for advanced clear cell renal cell carcinoma (ccRCC). To define the druggable targets for improvement of TKI and ICI combination therapy in ccRCC, we analyzed a commercial protein kinase inhibitor dataset and a public ccRCC dataset and identified LRRK2 as a potential candidate that can be targeted by a small molecule inhibitor. We demonstrated that LRRK2 was transcriptionally upregulated by HIF2A and enabled to drive proliferation of ccRCC cells in a manner independent of its kinase activity. LRRK2 inhibits the RBX1-mediated degradation of lipid metabolism modulator LPCAT1 to reducing the sensitivity to TKI and PD-1 blockade in ccRCC. Specifically, LRRK2/LPCAT1 upregulated IL-1β expression levels through AKT and also increased IL-1β shearing by activating inflammasome. To target the kinase-independent activity of LRRK2, we developed an LR-protac and showed that LR-protac decreased LRRK2 protein level and enhanced the antitumor effect of PD-1 blockade and TKI in ccRCC. These data indicate that LRRK2 is a viable target for improvement of the efficacy of PD-1 blockade and TKI in ccRCC.
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Data availability
The datasets used and/or analyzed during the current study are available from the corresponding authors on reasonable request. The data generated in this study are publicly available in Gene Expression Omnibus (GEO) at GSE264320.
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Acknowledgements
We would like to thank Shanghai BioProfile Biotechnology (Shanghai, China) for technical support. We would like to thank ProMab Biotechnologies, Inc. (Changsha, China) for their antibody.
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Yulong Hong: Methodology; Wei Li: Methodology; Zhuo Xing: Methodology; Minghao Lu: Methodology; Tianyu Tang: Formal analysis; Liang Zhu: Formal analysis; Wei Xiong: Formal analysis; Wentao Liu: Project administration, Investigation; Huan Zhang: Investigation; Shangqing Ren: Project administration, Investigation.
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Hong, Y., Li, W., Xing, Z. et al. LRRK2 reduces the sensitivity to TKI and PD-1 blockade in ccRCC via activating LPCAT1. Oncogene 44, 1761–1776 (2025). https://doi.org/10.1038/s41388-025-03289-0
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DOI: https://doi.org/10.1038/s41388-025-03289-0
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