Colorectal Cancer Stem Cell States Uncovered by Simultaneous Single-Cell Analysis of Transcriptome and Telomeres.

Colorectal Cancer Stem Cell States Uncovered by Simultaneous Single-Cell Analysis of Transcriptome and Telomeres.
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DOI:
10.1002/advs.202004320
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发表时间:
2021-04
期刊:
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子:
--
通讯作者:
Liu L
Liu L
中科院分区:
其他
文献类型:
--
作者:
Wang H;Gong P;Chen T;Gao S;Wu Z;Wang X;Li J;Marjani SL;Costa J;Weissman SM;Qi F;Pan X;Liu L

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Cancer stem cells (CSCs) presumably contribute to tumor progression and drug resistance, yet their definitive features have remained elusive. Here, simultaneous measurement of telomere length and transcriptome in the same cells enables systematic assessment of CSCs in primary colorectal cancer (CRC). The in‐depth transcriptome profiled by SMART‐seq2 is independently validated by high‐throughput scRNA‐seq using 10 × Genomics. It is found that rare CSCs exist in dormant state and display plasticity toward cancer epithelial cells (EPCs) that essentially are presumptive tumor‐initiating cells (TICs), while both retaining the prominent signaling pathways including WNT, TGF‐β, and HIPPO/YAP. Moreover, CSCs exhibit chromosome copy number variation (CNV) pattern resembling cancer EPCs but distinct from normal stem cells, suggesting the phylogenetic relationship between CSCs and cancer EPCs. Notably, CSCs maintain shorter telomeres and possess minimal telomerase activity consistent with their nonproliferative nature, unlike cancer EPCs. Additionally, the specific signature of CSCs particularly NOTUM, SMOC2, BAMBI, PHLDA1, and TNFRSF19 correlates with the prognosis of CRC. These findings characterize the heterogeneity of CSCs and their linkage to cancer EPCs/TICs, some of which are conventionally regarded as CSCs. Cells enriched from colorectal cancer with canonical CSC markers CD44, CD133 and LGR5 contain not only CSCs, but also a variety of other cell types, particularly EPC_A and B. Single cell multiomics of transcriptome and telomere reveals the phylogenetic relationship of cancer EPCs with, and specific characters of CSCs. These results are validated by ImmunoFISH, CRISPR/Cas9 knockout and other analyses, and uncover the hidden heterogeneity of colorectal CSCs.
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