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Short-Term Ex Vivo Culture of CTCs from Advance Breast Cancer Patients: Clinical Implications

SIMPLE SUMMARY: Circulating tumor cells (CTCs) are responsible for metastasis, they represent tumor biology and have also predictive value for therapy monitoring and prognosis of metastatic breast cancer patients. In the blood, CTCs are found in low frequency and a small percentage of them survive....

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Autores principales: Carmona-Ule, Nuria, González-Conde, Miriam, Abuín, Carmen, Cueva, Juan F., Palacios, Patricia, López-López, Rafael, Costa, Clotilde, Dávila-Ibáñez, Ana Belén
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198105/
https://www.ncbi.nlm.nih.gov/pubmed/34071445
http://dx.doi.org/10.3390/cancers13112668
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author Carmona-Ule, Nuria
González-Conde, Miriam
Abuín, Carmen
Cueva, Juan F.
Palacios, Patricia
López-López, Rafael
Costa, Clotilde
Dávila-Ibáñez, Ana Belén
author_facet Carmona-Ule, Nuria
González-Conde, Miriam
Abuín, Carmen
Cueva, Juan F.
Palacios, Patricia
López-López, Rafael
Costa, Clotilde
Dávila-Ibáñez, Ana Belén
author_sort Carmona-Ule, Nuria
collection PubMed
description SIMPLE SUMMARY: Circulating tumor cells (CTCs) are responsible for metastasis, they represent tumor biology and have also predictive value for therapy monitoring and prognosis of metastatic breast cancer patients. In the blood, CTCs are found in low frequency and a small percentage of them survive. Therefore, achieving their expansion in vitro will allow performing characterization and functional analysis. In this work, we used growth factors and Nanoemulsions to support CTCs culture. We have seen that the CTCs subpopulation capable of ex vivo expanding presented mesenchymal and stem characteristics and loss of epithelial markers. Besides, CTC culture predicted progression-free survival. ABSTRACT: Background: Circulating tumor cells (CTC) have relevance as prognostic markers in breast cancer. However, the functional properties of CTCs or their molecular characterization have not been well-studied. Experimental models indicate that only a few cells can survive in the circulation and eventually metastasize. Thus, it is essential to identify these surviving cells capable of forming such metastases. Methods: We isolated viable CTCs from 50 peripheral blood samples obtained from 35 patients with advanced metastatic breast cancer using RosetteSep(TM) for ex vivo culture. The CTCs were seeded and monitored on plates under low adherence conditions and with media supplemented with growth factors and Nanoemulsions. Phenotypic analysis was performed by immunofluorescence and gene expression analysis using RT-PCR and CTCs counting by the Cellsearch(®) system. Results: We found that in 75% of samples the CTC cultures lasted more than 23 days, predicting a shorter Progression-Free Survival in these patients, independently of having ≥5 CTC by Cellsearch(®). We also observed that CTCs before and after culture showed a different gene expression profile. Conclusions: the cultivability of CTCs is a predictive factor. Furthermore, the subset of cells capable of growing ex vivo show stem or mesenchymal features and may represent the CTC population with metastatic potential in vivo.
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spelling pubmed-81981052021-06-14 Short-Term Ex Vivo Culture of CTCs from Advance Breast Cancer Patients: Clinical Implications Carmona-Ule, Nuria González-Conde, Miriam Abuín, Carmen Cueva, Juan F. Palacios, Patricia López-López, Rafael Costa, Clotilde Dávila-Ibáñez, Ana Belén Cancers (Basel) Article SIMPLE SUMMARY: Circulating tumor cells (CTCs) are responsible for metastasis, they represent tumor biology and have also predictive value for therapy monitoring and prognosis of metastatic breast cancer patients. In the blood, CTCs are found in low frequency and a small percentage of them survive. Therefore, achieving their expansion in vitro will allow performing characterization and functional analysis. In this work, we used growth factors and Nanoemulsions to support CTCs culture. We have seen that the CTCs subpopulation capable of ex vivo expanding presented mesenchymal and stem characteristics and loss of epithelial markers. Besides, CTC culture predicted progression-free survival. ABSTRACT: Background: Circulating tumor cells (CTC) have relevance as prognostic markers in breast cancer. However, the functional properties of CTCs or their molecular characterization have not been well-studied. Experimental models indicate that only a few cells can survive in the circulation and eventually metastasize. Thus, it is essential to identify these surviving cells capable of forming such metastases. Methods: We isolated viable CTCs from 50 peripheral blood samples obtained from 35 patients with advanced metastatic breast cancer using RosetteSep(TM) for ex vivo culture. The CTCs were seeded and monitored on plates under low adherence conditions and with media supplemented with growth factors and Nanoemulsions. Phenotypic analysis was performed by immunofluorescence and gene expression analysis using RT-PCR and CTCs counting by the Cellsearch(®) system. Results: We found that in 75% of samples the CTC cultures lasted more than 23 days, predicting a shorter Progression-Free Survival in these patients, independently of having ≥5 CTC by Cellsearch(®). We also observed that CTCs before and after culture showed a different gene expression profile. Conclusions: the cultivability of CTCs is a predictive factor. Furthermore, the subset of cells capable of growing ex vivo show stem or mesenchymal features and may represent the CTC population with metastatic potential in vivo. MDPI 2021-05-28 /pmc/articles/PMC8198105/ /pubmed/34071445 http://dx.doi.org/10.3390/cancers13112668 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Carmona-Ule, Nuria
González-Conde, Miriam
Abuín, Carmen
Cueva, Juan F.
Palacios, Patricia
López-López, Rafael
Costa, Clotilde
Dávila-Ibáñez, Ana Belén
Short-Term Ex Vivo Culture of CTCs from Advance Breast Cancer Patients: Clinical Implications
title Short-Term Ex Vivo Culture of CTCs from Advance Breast Cancer Patients: Clinical Implications
title_full Short-Term Ex Vivo Culture of CTCs from Advance Breast Cancer Patients: Clinical Implications
title_fullStr Short-Term Ex Vivo Culture of CTCs from Advance Breast Cancer Patients: Clinical Implications
title_full_unstemmed Short-Term Ex Vivo Culture of CTCs from Advance Breast Cancer Patients: Clinical Implications
title_short Short-Term Ex Vivo Culture of CTCs from Advance Breast Cancer Patients: Clinical Implications
title_sort short-term ex vivo culture of ctcs from advance breast cancer patients: clinical implications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198105/
https://www.ncbi.nlm.nih.gov/pubmed/34071445
http://dx.doi.org/10.3390/cancers13112668
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