Cited by 60Cancer Cells and MetastasisColorectal Cancer Treatments and StudiesCancer Genomics and Diagnostics

Cancer Stem Cell-Based Models of Colorectal Cancer Reveal Molecular Determinants of Therapy Resistance

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De Angelis, Maria Laura, Zeuner, Ann, Policicchio, Eleonora, Russo, Giorgio, Bruselles, Alessandro, Signore, Michele, Vitale, Sara, De Luca, Gabriele +10 more·2016·Stem Cells Translational Medicine

Abstract

Colorectal cancer (CRC) therapy mainly relies on the use of conventional chemotherapeutic drugs combined, in a subset of patients, with epidermal growth factor receptor [EGFR]-targeting agents. Although CRC is considered a prototype of a cancer stem cell (CSC)-driven tumor, the effects of both conventional and targeted therapies on the CSC compartment are largely unknown. We have optimized a protocol for colorectal CSC isolation that allowed us to obtain CSC-enriched cultures from primary tumor specimens, with high efficiency. CSC isolation was followed by in vitro and in vivo validation, genetic characterization, and drug sensitivity analysis, thus generating panels of CSC lines with defined patterns of genetic mutations and therapy sensitivity. Colorectal CSC lines were polyclonal and maintained intratumor heterogeneity in terms of somatically acquired mutations and differentiation state. Such CSC-enriched cultures were used to investigate the effects of both conventional and targeted therapies on the CSC compartment in vivo and to generate a proteomic picture of signaling pathways implicated in sensitivity/resistance to anti-EGFR agents. We propose CSC lines as a sound preclinical framework to test the effects of therapies in vitro and in vivo and to identify novel determinants of therapy resistance. Significance: Colorectal cancer stem cells (CSCs) have been shown to be responsible for tumor propagation, metastatic dissemination, and relapse. However, molecular pathways present in CSCs, as well as mechanisms of therapy resistance, are mostly unknown. Taking advantage of genetically characterized CSC lines derived from colorectal tumors, this study provides an extensive analysis of CSC response to EGFR-targeted therapy in vivo and an overview of factors implicated in therapy response or resistance. Furthermore, the implementation of a biobank of molecularly annotated CSC lines provides an innovative resource for future investigations in colorectal cancer.

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  1. 12 DePristo MA, Banks E, Poplin R et al. A frameworkforvariationdiscoveryandgenotyping using next-generation DNA sequencing data. Nat Genet 2011;43:491 -498.

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Authors
De Angelis, M. L., Zeuner, A., Policicchio, E., Russo, G., Bruselles, A., Signore, M., Vitale, S., De Luca, G., Pilozzi, E., Boe, A., Stassi, G., Ricci-Vitiani, L., Amoreo, C. A., Pagliuca, A., Francescangeli, F., Tartaglia, M., De Maria, R., & Baiocchi, M.
Affiliations
  • Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
  • Istituto Superiore di Sanità (IT)
  • Sapienza University of Rome (IT)
  • University of Palermo (IT)
  • Instituto Nazionale Tumori Regina Elena (IT)
  • Istituto Nazionale Tumori Regina Elena, Rome, Italy
Corresponding author
Baiocchi, Marta
Venue
Stem Cells Translational Medicine
Published
2016-03-08
Volume
5
Issue
4
Pages
511-523
ISSN
  • 2157-6564 (ISSN-L)
  • 2157-6580
OpenAlex
W2295718866
Cited by
60
References
36
Citations by year
2026: 8 · 2025: 2 · 2024: 1 · 2023: 5 · 2022: 6 · 2021: 9 · 2020: 8 · 2019: 3 · 2018: 4 · 2017: 12 · 2016: 2
FWCI
3.78
Type
journal article
Language
en
Open access
Locations
  • Stem Cells Translational Medicine (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion, cc-by-nd)
  • Nova Science Publishers (Nova Science Publishers, Inc.) (submittedVersion)
Funders
Italian Association for Cancer Research (15749)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
  • Health Sciences › Medicine › Oncology › Colorectal Cancer Treatments and Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
Keywords
colorectal cancer, cancer stem cells, treatment resistance, anti-EGFR therapy, intratumoral heterogeneity, somatic mutations, drug sensitivity, proteomic profiling, signaling pathways, preclinical models, biobanks
MeSH terms
Animals, Cells, Cultured, Female, Humans, Mice, Transgenic, Models, Biological, Neoplastic Stem Cells, Colorectal Neoplasms, Signal Transduction, Mice, SCID, Mice, Inbred NOD, Drug Resistance, Neoplasm, Gene Expression Profiling, Proteomics, Microarray Analysis, Protein Kinase Inhibitors

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