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- W4282964209 abstract "Abstract Regarding metastatic potential of cancer cells and the refractory status, regulatory and epigenetic factors underlie the cancer treatment resistance by inducing cellular heterogeneity. Circulating tumor cells (CTCs) and their stemness are critical for metastases formation associated with poor survival rates. In colorectal cancer (CRC), several stem-cell markers, such as CD44v9 and LGR5, the positive cells cause intertumoral heterogeneity and promote refractory potential. However, the mastermind of the cells which is critical for the treatment resistance remains unknown. Here, we aimed to identify the mechanisms of the treatment resistance of the CRC by focusing on typical stem cells. We selected several stem cell-related genes such as pluripotency related genes, based on the expression profile analysis of CRC patients along with drug susceptibility assays using patient-derived organoids. Despite the small number of cancer stem cells, the single cell produced heterogeneous cell populations in vitro and in vivo, expressing various differentiation and stem biomarkers, and confirmed by the knockdown analysis. Single-cell trajectory analysis suggested that heterogeneous populations including cancer stem and some persister cells were derived from the stem cells following administration of anti-cancer drugs. Furthermore, the stem cells formed heterogeneous liver metastases at a high rate, and these unique cells were observed in the bloodstream of CRC patients. This present study unveils a mechanism of CRC treatment resistance and highlights the potential of stem marker-expressing cells as CTCs. Citation Format: Norikatsu Miyoshi, Shiki Fujino, Yuki Sekido, Tsuyoshi Hata, Takayuki Ogino, Hidekazu Takahashi, Mamoru Uemura, HIrofumi Yamamoto, Yuichiro Doki, Hidetoshi Eguchi. Heterogeneity inducible tumor stem cells relate distant metastasis and the treatment resistance [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 2630." @default.
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- W4282964209 date "2022-06-15" @default.
- W4282964209 modified "2023-10-12" @default.
- W4282964209 title "Abstract 2630: Heterogeneity inducible tumor stem cells relate distant metastasis and the treatment resistance" @default.
- W4282964209 doi "https://doi.org/10.1158/1538-7445.am2022-2630" @default.
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