Tumor Hypoxia and Circulating Tumor Cells

Circulating tumor cells (CTCs) are a rare tumor cell subpopulation induced and selected by the tumor microenvironment’s extreme conditions. Under hypoxia and starvation, these aggressive and invasive cells are able to invade the lymphatic and circulatory systems. Escaping from the primary tumor, CTC...

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Main Authors: Walter Tinganelli, Marco Durante
Format: Article
Language:English
Published: MDPI AG 2020-12-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/21/24/9592
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author Walter Tinganelli
Marco Durante
author_facet Walter Tinganelli
Marco Durante
author_sort Walter Tinganelli
collection DOAJ
description Circulating tumor cells (CTCs) are a rare tumor cell subpopulation induced and selected by the tumor microenvironment’s extreme conditions. Under hypoxia and starvation, these aggressive and invasive cells are able to invade the lymphatic and circulatory systems. Escaping from the primary tumor, CTCs enter into the bloodstream to form metastatic deposits or re-establish themselves in cancer’s primary site. Although radiotherapy is widely used to cure solid malignancies, it can promote metastasis. Radiation can disrupt the primary tumor vasculature, increasing the dissemination of CTCs. Radiation also induces epithelial–mesenchymal transition (EMT) and eliminates suppressive signaling, causing the proliferation of existent, but previously dormant, disseminated tumor cells (DTCs). In this review, we collect the results and evidence underlying the molecular mechanisms of CTCs and DTCs and the effects of radiation and hypoxia in developing these cells.
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spelling doaj.art-7ecb04dbb28c4c869fb3c5c292c604d42023-11-21T01:06:44ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672020-12-012124959210.3390/ijms21249592Tumor Hypoxia and Circulating Tumor CellsWalter Tinganelli0Marco Durante1Biophysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, GermanyBiophysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, GermanyCirculating tumor cells (CTCs) are a rare tumor cell subpopulation induced and selected by the tumor microenvironment’s extreme conditions. Under hypoxia and starvation, these aggressive and invasive cells are able to invade the lymphatic and circulatory systems. Escaping from the primary tumor, CTCs enter into the bloodstream to form metastatic deposits or re-establish themselves in cancer’s primary site. Although radiotherapy is widely used to cure solid malignancies, it can promote metastasis. Radiation can disrupt the primary tumor vasculature, increasing the dissemination of CTCs. Radiation also induces epithelial–mesenchymal transition (EMT) and eliminates suppressive signaling, causing the proliferation of existent, but previously dormant, disseminated tumor cells (DTCs). In this review, we collect the results and evidence underlying the molecular mechanisms of CTCs and DTCs and the effects of radiation and hypoxia in developing these cells.https://www.mdpi.com/1422-0067/21/24/9592CTCsDTCsEMTmetastasisinvasionmigration
spellingShingle Walter Tinganelli
Marco Durante
Tumor Hypoxia and Circulating Tumor Cells
International Journal of Molecular Sciences
CTCs
DTCs
EMT
metastasis
invasion
migration
title Tumor Hypoxia and Circulating Tumor Cells
title_full Tumor Hypoxia and Circulating Tumor Cells
title_fullStr Tumor Hypoxia and Circulating Tumor Cells
title_full_unstemmed Tumor Hypoxia and Circulating Tumor Cells
title_short Tumor Hypoxia and Circulating Tumor Cells
title_sort tumor hypoxia and circulating tumor cells
topic CTCs
DTCs
EMT
metastasis
invasion
migration
url https://www.mdpi.com/1422-0067/21/24/9592
work_keys_str_mv AT waltertinganelli tumorhypoxiaandcirculatingtumorcells
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