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Visualization and targeting of LGR5+ human colon cancer stem cells. 2017

Mariko Shimokawa, and Yuki Ohta, and Shingo Nishikori, and Mami Matano, and Ai Takano, and Masayuki Fujii, and Shoichi Date, and Shinya Sugimoto, and Takanori Kanai, and Toshiro Sato
Department of Gastroenterology, Keio University School of Medicine, Tokyo, Japan.

The cancer stem cell (CSC) theory highlights a self-renewing subpopulation of cancer cells that fuels tumour growth. The existence of human CSCs is mainly supported by xenotransplantation of prospectively isolated cells, but their clonal dynamics and plasticity remain unclear. Here, we show that human LGR5+ colorectal cancer cells serve as CSCs in growing cancer tissues. Lineage-tracing experiments with a tamoxifen-inducible Cre knock-in allele of LGR5 reveal the self-renewal and differentiation capacity of LGR5+ tumour cells. Selective ablation of LGR5+ CSCs in LGR5-iCaspase9 knock-in organoids leads to tumour regression, followed by tumour regrowth driven by re-emerging LGR5+ CSCs. KRT20 knock-in reporter marks differentiated cancer cells that constantly diminish in tumour tissues, while reverting to LGR5+ CSCs and contributing to tumour regrowth after LGR5+ CSC ablation. We also show that combined chemotherapy potentiates targeting of LGR5+ CSCs. These data provide insights into the plasticity of CSCs and their potential as a therapeutic target in human colorectal cancer.

UI MeSH Term Description Entries
D008297 Male Males
D009940 Organoids An organization of cells into an organ-like structure. Organoids can be generated in culture, e.g., self-organized three-dimensional tissue structures derived from STEM CELLS (see MICROPHYSIOLOGICAL SYSTEMS). They are also found in certain NEOPLASMS. Organoid
D002454 Cell Differentiation Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs. Differentiation, Cell,Cell Differentiations,Differentiations, Cell
D003110 Colonic Neoplasms Tumors or cancer of the COLON. Cancer of Colon,Colon Adenocarcinoma,Colon Cancer,Cancer of the Colon,Colon Neoplasms,Colonic Cancer,Neoplasms, Colonic,Adenocarcinoma, Colon,Adenocarcinomas, Colon,Cancer, Colon,Cancer, Colonic,Cancers, Colon,Cancers, Colonic,Colon Adenocarcinomas,Colon Cancers,Colon Neoplasm,Colonic Cancers,Colonic Neoplasm,Neoplasm, Colon,Neoplasm, Colonic,Neoplasms, Colon
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000066673 Cell Self Renewal The ability of certain cell types, such as progenitor cells or tumor cells, to go through numerous cycles of CELL DIVISION while still maintaining an undifferentiated or partially differentiated state. Stem Cell Renewal,Stem Cell Self-Renewal,Cell Renewal, Stem,Cell Renewals, Stem,Cell Self Renewals,Cell Self-Renewal, Stem,Cell Self-Renewals, Stem,Renewal, Cell Self,Renewal, Stem Cell,Renewals, Cell Self,Renewals, Stem Cell,Self Renewal, Cell,Self Renewals, Cell,Self-Renewal, Stem Cell,Self-Renewals, Stem Cell,Stem Cell Renewals,Stem Cell Self Renewal,Stem Cell Self-Renewals
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014411 Neoplastic Stem Cells Highly proliferative, self-renewing, and colony-forming stem cells which give rise to NEOPLASMS. Cancer Stem Cells,Colony-Forming Units, Neoplastic,Stem Cells, Neoplastic,Tumor Stem Cells,Neoplastic Colony-Forming Units,Tumor Initiating Cells,Cancer Stem Cell,Cell, Cancer Stem,Cell, Neoplastic Stem,Cell, Tumor Initiating,Cell, Tumor Stem,Cells, Cancer Stem,Cells, Neoplastic Stem,Cells, Tumor Initiating,Cells, Tumor Stem,Colony Forming Units, Neoplastic,Colony-Forming Unit, Neoplastic,Initiating Cell, Tumor,Initiating Cells, Tumor,Neoplastic Colony Forming Units,Neoplastic Colony-Forming Unit,Neoplastic Stem Cell,Stem Cell, Cancer,Stem Cell, Neoplastic,Stem Cell, Tumor,Stem Cells, Cancer,Stem Cells, Tumor,Tumor Initiating Cell,Tumor Stem Cell,Unit, Neoplastic Colony-Forming,Units, Neoplastic Colony-Forming
D043562 Receptors, G-Protein-Coupled The largest family of cell surface receptors involved in SIGNAL TRANSDUCTION. They share a common structure and signal through HETEROTRIMERIC G-PROTEINS. G Protein Coupled Receptor,G-Protein-Coupled Receptor,G-Protein-Coupled Receptors,G Protein Coupled Receptors,Receptor, G-Protein-Coupled,Receptors, G Protein Coupled
D049109 Cell Proliferation All of the processes involved in increasing CELL NUMBER including CELL DIVISION. Cell Growth in Number,Cellular Proliferation,Cell Multiplication,Cell Number Growth,Growth, Cell Number,Multiplication, Cell,Number Growth, Cell,Proliferation, Cell,Proliferation, Cellular

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