Open Access

Chemosensitivity analysis and study of gene resistance on tumors and cancer stem cell isolates from patients with colorectal cancer

  • Authors:
    • Elsa N. Garza‑Treviño
    • Herminia G. Martínez‑Rodríguez
    • Paulina Delgado‑González
    • Orlando Solís‑Coronado
    • Rocio Ortíz‑Lopez
    • Adolfo Soto‑Domínguez
    • Víctor M. Treviño
    • Gerardo R. Padilla‑Rivas
    • Jose F. Islas‑Cisneros
    • Adriana G. Quiroz‑Reyes
    • Salvador L. Said‑Fernández
  • View Affiliations

  • Published online on: August 11, 2021     https://doi.org/10.3892/mmr.2021.12360
  • Article Number: 721
  • Copyright: © Garza‑Treviño et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 4.0].

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Abstract

Colorectal cancer (CRC) is one of the main causes of mortality. Recent studies suggest that cancer stem cells (CSCs) can survive after chemotherapy and promote tumor invasiveness and aggression. According to a higher hierarchy complexity of CSC, different protocols for isolation, expansion, and characterization have been used; however, there are no available resistance biomarkers that allow predicting the clinical response of treatment 5‑fluorouracil (5FU) and oxaliplatin. Therefore, the primary aim of the present study was to analyze the expression of gene resistance on tumors and CSC‑derived isolates from patients CRC. In the present study, adenocarcinomas of the colon and rectum (CRAC) were classified based on an in vitro adenosine triphosphate‑based chemotherapy response assay, as sensitive and resistant and the percentage of CD24 and CD44 markers are evaluated by immunohistochemistry. To isolate resistant colon‑CSC, adenocarcinoma tissues resistant to 5FU and oxaliplatin were evaluated. Finally, all samples were sequenced using a custom assay with chemoresistance‑associated genes to find a candidate gene on resistance colon‑CSC. Results showed that 59% of the CRC tissue analyzed was resistant and had a higher percentage of CD44 and CD24 markers. An association was found in the expression of some genes between the tumor‑resistant tissue and CSC. Overall, isolates of the CSC population CD44+ resistant to 5FU and oxaliplatin demonstrated different expression profiles; however, the present study was able to identify overexpression of the KRT‑18 gene, in most of the isolates. In conclusion, the results of the present study showed overexpression of KRT‑18 in CD44+ cells is associated with chemoresistance to 5FU and oxaliplatin in CRAC.
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October-2021
Volume 24 Issue 4

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Garza‑Treviño EN, Martínez‑Rodríguez HG, Delgado‑González P, Solís‑Coronado O, Ortíz‑Lopez R, Soto‑Domínguez A, Treviño VM, Padilla‑Rivas GR, Islas‑Cisneros JF, Quiroz‑Reyes AG, Quiroz‑Reyes AG, et al: Chemosensitivity analysis and study of gene resistance on tumors and cancer stem cell isolates from patients with colorectal cancer. Mol Med Rep 24: 721, 2021
APA
Garza‑Treviño, E.N., Martínez‑Rodríguez, H.G., Delgado‑González, P., Solís‑Coronado, O., Ortíz‑Lopez, R., Soto‑Domínguez, A. ... Said‑Fernández, S.L. (2021). Chemosensitivity analysis and study of gene resistance on tumors and cancer stem cell isolates from patients with colorectal cancer. Molecular Medicine Reports, 24, 721. https://doi.org/10.3892/mmr.2021.12360
MLA
Garza‑Treviño, E. N., Martínez‑Rodríguez, H. G., Delgado‑González, P., Solís‑Coronado, O., Ortíz‑Lopez, R., Soto‑Domínguez, A., Treviño, V. M., Padilla‑Rivas, G. R., Islas‑Cisneros, J. F., Quiroz‑Reyes, A. G., Said‑Fernández, S. L."Chemosensitivity analysis and study of gene resistance on tumors and cancer stem cell isolates from patients with colorectal cancer". Molecular Medicine Reports 24.4 (2021): 721.
Chicago
Garza‑Treviño, E. N., Martínez‑Rodríguez, H. G., Delgado‑González, P., Solís‑Coronado, O., Ortíz‑Lopez, R., Soto‑Domínguez, A., Treviño, V. M., Padilla‑Rivas, G. R., Islas‑Cisneros, J. F., Quiroz‑Reyes, A. G., Said‑Fernández, S. L."Chemosensitivity analysis and study of gene resistance on tumors and cancer stem cell isolates from patients with colorectal cancer". Molecular Medicine Reports 24, no. 4 (2021): 721. https://doi.org/10.3892/mmr.2021.12360