Targeting the SPC25/RIOK1/MYH9 Axis to Overcome Tumor Stemness and Platinum Resistance in Epithelial Ovarian Cancer
In epithelial ovarian cancer (EOC), platinum resistance, potentially mediated by cancer stem cells (CSCs), often leads to relapse and treatment failure. Here, the role of spindle pole body component 25 (SPC25) as a key determinant promoting stemness and platinum resistance in EOC cells, with its expression being correlated with adverse clinical outcomes is delineated. Mechanistically, SPC25 acts as a scaffolding platform, orchestrating the assembly of an SPC25/RIOK1/MYH9 trimeric complex, triggering RIOK1-mediated phosphorylation of MYH9 at Ser1943. This prompts MYH9 to disengage from the cytoskeleton, augmenting its nuclear accumulation, thus potentiating CTNNB1 transcription and subsequent activation of Wnt/β-catenin signaling. CBP1, a competitive inhibitory peptide, can disrupt the formation of the aforementioned trimeric complex, diminishing the activity of the SPC25/RIOK1/MYH9 axis-mediated Wnt/β-catenin signaling, and thus attenuate CSC phenotypes, thereby enhancing platinum efficacy in vitro, in vivo, and in patient-derived organoids. Therefore, targeting the SPC25/RIOK1/MYH9 axis, which mediates the maintenance of stemness and platinum resistance in EOC cells, may enhance platinum sensitivity and increase survival in patients with EOC.
Authors
- Muwen Yang (ORCID: https://orcid.org/0000-0002-0786-7059)
- Xuwei Chen (ORCID: https://orcid.org/0000-0001-7189-5022)
- Yulu Pan
- Lingzhi Kong (ORCID: https://orcid.org/0000-0003-2451-4965)
- Lixin He
- Boyu Chen (ORCID: https://orcid.org/0000-0002-1422-713X)
- Libing Song (ORCID: https://orcid.org/0000-0002-5315-771X)
- Ying Ouyang (ORCID: https://orcid.org/0000-0002-3487-0958)
- Xiangfu Chen
- Dongni Shi (ORCID: https://orcid.org/0000-0003-3669-2734)
- Yue Li (ORCID: https://orcid.org/0000-0002-1949-7913)
- Li Zheng (ORCID: https://orcid.org/0000-0002-3404-4824)
- Yanna Zhang (ORCID: https://orcid.org/0000-0003-4178-6575)
- Weijing Zhang (ORCID: https://orcid.org/0000-0002-1178-6059)
- Pinwei Deng
- Shu‐Mei Huang (ORCID: https://orcid.org/0000-0001-8323-0888)
- Hequn Zou (ORCID: https://orcid.org/0000-0002-7579-6643)
- Xingyu Jiang (ORCID: https://orcid.org/0009-0008-3043-819X)
- Jun Li (ORCID: https://orcid.org/0009-0004-1683-5130)
- Rui Wang (ORCID: https://orcid.org/0009-0009-3413-940X)
Institutions
- Sun Yat-sen University (CN)
- Kunming Medical University (CN)
- Chinese University of Hong Kong, Shenzhen (CN)
- Peking University Shenzhen Hospital (CN)
- Sun Yat-sen University Cancer Center (CN)
Publication Details
- Journal
- Advanced Science
- Published
- 2024-11-03
- DOI
- https://doi.org/10.1002/advs.202406688
- Citations
- 7
- Primary Topic
- Microtubule and mitosis dynamics
- Type
- article
- Field-Weighted Citation Impact
- 2.28
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Natural Science Foundation of Guangdong Province
- National Key Research and Development Program of China
- Basic and Applied Basic Research Foundation of Guangdong Province