Abstract
Colorectal carcinoma (CRC) is one of the most frequently diagnosed cancers and the leading cause of cancer-related death for both men and women. Recent studies have revealed that a small sub-population of cancer cells, termed cancer stem-like cells (CSCs)/cancer-initiating cells (CICs), are endowed with tumor-initiating ability, self-renewal ability and differentiation ability. CSCs/CICs are resistant to current therapies including chemotherapy and radiotherapy. Thus, CSCs/CICs are responsible for recurrence and metastasis, and eradication of CSCs/CICs is essential to cure cancer. In this study, we isolated CR-CSCs/CICs as sphere-cultured cells and found that a product derived from LY6/PLAUR domain containing 3 (LYPD3) is preferentially expressed in CSCs/CICs. Gene overexpression and gene knockdown experiments revealed that LYPD3 has a role in the maintenance of CR-CSCs/CICs. The findings provide a novel molecular insight into CR-CSCs/CICs.
Keywords:
Cancer stem cell; Colorectal cancer; LYPD3; Sphere formation.
Copyright © 2017 Elsevier Inc. All rights reserved.
MeSH terms
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Aldehyde Dehydrogenase / genetics
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Aldehyde Dehydrogenase / metabolism
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Aldehyde Dehydrogenase 1 Family
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Cell Adhesion Molecules / antagonists & inhibitors
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Cell Adhesion Molecules / genetics*
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Cell Adhesion Molecules / metabolism
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Cell Line, Tumor
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Cell Proliferation
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GPI-Linked Proteins / antagonists & inhibitors
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GPI-Linked Proteins / genetics
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GPI-Linked Proteins / metabolism
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Gene Expression Regulation, Neoplastic*
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HCT116 Cells
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HT29 Cells
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Humans
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Nanog Homeobox Protein / genetics
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Nanog Homeobox Protein / metabolism
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Neoplastic Stem Cells / metabolism*
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Neoplastic Stem Cells / pathology
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Octamer Transcription Factor-3 / genetics
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Octamer Transcription Factor-3 / metabolism
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RNA, Small Interfering / genetics
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RNA, Small Interfering / metabolism
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Retinal Dehydrogenase
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SOXB1 Transcription Factors / genetics
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SOXB1 Transcription Factors / metabolism
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Signal Transduction
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Spheroids, Cellular / metabolism*
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Spheroids, Cellular / pathology
Substances
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Cell Adhesion Molecules
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GPI-Linked Proteins
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LYPD3 protein, human
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NANOG protein, human
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Nanog Homeobox Protein
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Octamer Transcription Factor-3
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POU5F1 protein, human
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RNA, Small Interfering
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SOX2 protein, human
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SOXB1 Transcription Factors
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Aldehyde Dehydrogenase 1 Family
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Aldehyde Dehydrogenase
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ALDH1A1 protein, human
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Retinal Dehydrogenase