Polyploid cancer cells reveal signatures of chemotherapy resistance
- PMID: 39578659
- DOI: 10.1038/s41388-024-03212-z
Polyploid cancer cells reveal signatures of chemotherapy resistance
Abstract
Therapeutic resistance in cancer significantly contributes to mortality, with many patients eventually experiencing recurrence after initial treatment responses. Recent studies have identified therapy-resistant large polyploid cancer cells in patient tissues, particularly in late-stage prostate cancer, linking them to advanced disease and relapse. Here, we analyzed bone marrow aspirates from 44 advanced prostate cancer patients and found the presence of circulating tumor cells with increased genomic content (CTC-IGC) was significantly associated with poorer progression-free survival. Single cell copy number profiling of CTC-IGC displayed clonal origins with typical CTCs, suggesting complete polyploidization. Induced polyploid cancer cells from PC3 and MDA-MB-231 cell lines treated with docetaxel or cisplatin were examined through single cell DNA sequencing, RNA sequencing, and protein immunofluorescence. Novel RNA and protein markers, including HOMER1, TNFRSF9, and LRP1, were identified as linked to chemotherapy resistance. These markers were also present in a subset of patient CTCs and are associated with recurrence in public gene expression data. This study highlights the prognostic significance of large polyploid tumor cells, their role in chemotherapy resistance, and the expression of markers tied to cancer relapse, offering new potential avenues for therapeutic development.
© 2024. The Author(s).
Conflict of interest statement
Competing interests: The HDSCA technology described here is licensed to Epic Sciences. PK has ownership in Epic Sciences. JH discloses he is a member of the Clinical Advisory Board of Epic Sciences. KJP is a consultant for CUE Biopharma, Inc., and holds equity interest in CUE Biopharma, Inc., Keystone Biopharma, Inc., PEEL Therapeutics, Inc and Kreftect, Inc. SRA holds equity interest in Keystone Biopharma, Inc. Ethics Approval and Consent to Participate: The study was conducted according to the guidelines of the Declaration of Helsinki and approved by the Institutional Review Board of the University of Southern California Keck School of Medicine, MD Anderson (NCT01505868), and the VA of Los Angeles (PCC 2015-090980). Informed consent was obtained from all subjects involved in the study. Consent for Publication: All the authors agree to publish this paper.
Update of
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Polyploid cancer cells reveal signatures of chemotherapy resistance.bioRxiv [Preprint]. 2024 Aug 23:2024.08.19.608632. doi: 10.1101/2024.08.19.608632. bioRxiv. 2024. Update in: Oncogene. 2024 Nov 22. doi: 10.1038/s41388-024-03212-z PMID: 39229204 Free PMC article. Updated. Preprint.
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Polyploid cancer cells reveal signatures of chemotherapy resistance.Res Sq [Preprint]. 2024 Oct 14:rs.3.rs-4921634. doi: 10.21203/rs.3.rs-4921634/v1. Res Sq. 2024. Update in: Oncogene. 2024 Nov 22. doi: 10.1038/s41388-024-03212-z PMID: 39483900 Free PMC article. Updated. Preprint.
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