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CDK4/6 inhibition confers protection of normal gut epithelia against gemcitabine and the active metabolite of irinotecan
Cancer chemotherapy relies on a high ratio of toxicity toward cancer cells vs. nonmalignant cells, making it desirable to protect normal cells. Among the nonmalignant cells, epithelia of the gut belong to the most vulnerable ones toward chemotherapeutics. Here, we use a murine intestinal organoid mo...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Taylor & Francis
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10361147/ https://www.ncbi.nlm.nih.gov/pubmed/37266562 http://dx.doi.org/10.1080/15384101.2023.2217003 |
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author | Blume, Joshua Claus, Luisa Isermann, Tamara Dickmanns, Antje Conradi, Lena-Christin Schulz-Heddergott, Ramona Dobbelstein, Matthias |
author_facet | Blume, Joshua Claus, Luisa Isermann, Tamara Dickmanns, Antje Conradi, Lena-Christin Schulz-Heddergott, Ramona Dobbelstein, Matthias |
author_sort | Blume, Joshua |
collection | PubMed |
description | Cancer chemotherapy relies on a high ratio of toxicity toward cancer cells vs. nonmalignant cells, making it desirable to protect normal cells. Among the nonmalignant cells, epithelia of the gut belong to the most vulnerable ones toward chemotherapeutics. Here, we use a murine intestinal organoid model to assess a strategy for protecting such epithelia against chemotherapy. Cell cycle progression was first stalled by palbociclib, a clinically established cyclin-dependent kinase 4/6 (CDK4/6) inhibitor. Washout of the drug allowed subsequent outgrowth of gut organoids. This transient cell cycle arrest conferred near-complete protection of the cells toward the nucleoside analogue gemcitabine. Moreover, pre-treatment with palbociclib protected the organoids against SN-38, the topoisomerase I-inhibiting metabolite of irinotecan, which is otherwise known for its severe gastrointestinal toxicities. In contrast, RB1-mutated cancer cells were not protected against gemcitabine or SN-38 when pre-treated with palbociclib. Taken together, these results outline a strategy for protecting nonmalignant cells against the toxicities of chemotherapeutics commonly used to treat advanced colorectal and pancreatic cancer. We propose that this strategy is particularly promising to protect the gut when treating RB1-deficient tumors that fail to arrest the cell cycle in response to CDK4/6 inhibitors. [Figure: see text] |
format | Online Article Text |
id | pubmed-10361147 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Taylor & Francis |
record_format | MEDLINE/PubMed |
spelling | pubmed-103611472023-07-22 CDK4/6 inhibition confers protection of normal gut epithelia against gemcitabine and the active metabolite of irinotecan Blume, Joshua Claus, Luisa Isermann, Tamara Dickmanns, Antje Conradi, Lena-Christin Schulz-Heddergott, Ramona Dobbelstein, Matthias Cell Cycle Research Paper Cancer chemotherapy relies on a high ratio of toxicity toward cancer cells vs. nonmalignant cells, making it desirable to protect normal cells. Among the nonmalignant cells, epithelia of the gut belong to the most vulnerable ones toward chemotherapeutics. Here, we use a murine intestinal organoid model to assess a strategy for protecting such epithelia against chemotherapy. Cell cycle progression was first stalled by palbociclib, a clinically established cyclin-dependent kinase 4/6 (CDK4/6) inhibitor. Washout of the drug allowed subsequent outgrowth of gut organoids. This transient cell cycle arrest conferred near-complete protection of the cells toward the nucleoside analogue gemcitabine. Moreover, pre-treatment with palbociclib protected the organoids against SN-38, the topoisomerase I-inhibiting metabolite of irinotecan, which is otherwise known for its severe gastrointestinal toxicities. In contrast, RB1-mutated cancer cells were not protected against gemcitabine or SN-38 when pre-treated with palbociclib. Taken together, these results outline a strategy for protecting nonmalignant cells against the toxicities of chemotherapeutics commonly used to treat advanced colorectal and pancreatic cancer. We propose that this strategy is particularly promising to protect the gut when treating RB1-deficient tumors that fail to arrest the cell cycle in response to CDK4/6 inhibitors. [Figure: see text] Taylor & Francis 2023-06-02 /pmc/articles/PMC10361147/ /pubmed/37266562 http://dx.doi.org/10.1080/15384101.2023.2217003 Text en © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) ), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent. |
spellingShingle | Research Paper Blume, Joshua Claus, Luisa Isermann, Tamara Dickmanns, Antje Conradi, Lena-Christin Schulz-Heddergott, Ramona Dobbelstein, Matthias CDK4/6 inhibition confers protection of normal gut epithelia against gemcitabine and the active metabolite of irinotecan |
title | CDK4/6 inhibition confers protection of normal gut epithelia against gemcitabine and the active metabolite of irinotecan |
title_full | CDK4/6 inhibition confers protection of normal gut epithelia against gemcitabine and the active metabolite of irinotecan |
title_fullStr | CDK4/6 inhibition confers protection of normal gut epithelia against gemcitabine and the active metabolite of irinotecan |
title_full_unstemmed | CDK4/6 inhibition confers protection of normal gut epithelia against gemcitabine and the active metabolite of irinotecan |
title_short | CDK4/6 inhibition confers protection of normal gut epithelia against gemcitabine and the active metabolite of irinotecan |
title_sort | cdk4/6 inhibition confers protection of normal gut epithelia against gemcitabine and the active metabolite of irinotecan |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10361147/ https://www.ncbi.nlm.nih.gov/pubmed/37266562 http://dx.doi.org/10.1080/15384101.2023.2217003 |
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