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Alterations of Circulating Bone Marrow–Derived VEGFR-2(+) Progenitor Cells in Isolated Limb Perfusion With or Without rhTNF-α
BACKGROUND: Circulating endothelial progenitor cells (cEPCs) as recruited to the angiogenic vascular system of malignant tumors have been proposed as a biomarker in malignancies. The effect of antitumor chemotherapy on cEPCs is not fully understood. We examined the level of cEPCs, vascular endotheli...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3764318/ https://www.ncbi.nlm.nih.gov/pubmed/22948772 http://dx.doi.org/10.1245/s10434-012-2637-3 |
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author | Nowak, Kai Jachol, Nicole Rafat, Neysan Joas, Elena Beck, Grietje Ch. Hohenberger, Peter |
author_facet | Nowak, Kai Jachol, Nicole Rafat, Neysan Joas, Elena Beck, Grietje Ch. Hohenberger, Peter |
author_sort | Nowak, Kai |
collection | PubMed |
description | BACKGROUND: Circulating endothelial progenitor cells (cEPCs) as recruited to the angiogenic vascular system of malignant tumors have been proposed as a biomarker in malignancies. The effect of antitumor chemotherapy on cEPCs is not fully understood. We examined the level of cEPCs, vascular endothelial growth factor (VEGF), and angiopoietin-2 in the blood of sarcoma and melanoma patients before and after isolated limb perfusion (ILP) with or without recombinant human tumor necrosis factor-α (rhTNF-α). METHODS: Twenty-two patients, 11 each with soft tissue sarcoma or recurrent melanoma of the limb, were recruited. ILP was performed with rhTNF-α/melphalan (TNF) or melphalan only (no TNF). Fifteen healthy volunteers served as control subjects. Blood was sampled before and up to 6 weeks after ILP. Peripheral blood mononuclear cells were isolated by density gradient centrifugation, and annexin V-negative cells were characterized as cEPCs by triple staining for CD133(+), CD34, and VEGFR-2(+). RESULTS: Before treatment, cEPC numbers were significantly increased in sarcoma (0.179 ± 0.190 %) and melanoma patients (0.110 ± 0.073 %) versus healthy controls (0.025 ± 0.018 %; P < 0.01), but did not differ significantly between sarcoma and melanoma patients. cEPC decreased significantly after ILP in patients with no TNF compared to pretreatment values (P < 0.05) and were significantly lower at 4 h, 48 h, and 1 week compared to ILP with TNF (P < 0.05). Values 6 weeks after ILP were significantly lower than before ILP in both investigated groups (P < 0.01). CONCLUSIONS: ILP with TNF results in activation of bone marrow–derived EPCs compared to ILP without TNF. Alteration of cEPCs and angiopoietin-2 by rhTNF-α might account for the cytotoxicity and hemorrhagic effects on tumor vessels during limb perfusion procedures. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1245/s10434-012-2637-3) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-3764318 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-37643182013-09-09 Alterations of Circulating Bone Marrow–Derived VEGFR-2(+) Progenitor Cells in Isolated Limb Perfusion With or Without rhTNF-α Nowak, Kai Jachol, Nicole Rafat, Neysan Joas, Elena Beck, Grietje Ch. Hohenberger, Peter Ann Surg Oncol Translational Research and Biomarkers BACKGROUND: Circulating endothelial progenitor cells (cEPCs) as recruited to the angiogenic vascular system of malignant tumors have been proposed as a biomarker in malignancies. The effect of antitumor chemotherapy on cEPCs is not fully understood. We examined the level of cEPCs, vascular endothelial growth factor (VEGF), and angiopoietin-2 in the blood of sarcoma and melanoma patients before and after isolated limb perfusion (ILP) with or without recombinant human tumor necrosis factor-α (rhTNF-α). METHODS: Twenty-two patients, 11 each with soft tissue sarcoma or recurrent melanoma of the limb, were recruited. ILP was performed with rhTNF-α/melphalan (TNF) or melphalan only (no TNF). Fifteen healthy volunteers served as control subjects. Blood was sampled before and up to 6 weeks after ILP. Peripheral blood mononuclear cells were isolated by density gradient centrifugation, and annexin V-negative cells were characterized as cEPCs by triple staining for CD133(+), CD34, and VEGFR-2(+). RESULTS: Before treatment, cEPC numbers were significantly increased in sarcoma (0.179 ± 0.190 %) and melanoma patients (0.110 ± 0.073 %) versus healthy controls (0.025 ± 0.018 %; P < 0.01), but did not differ significantly between sarcoma and melanoma patients. cEPC decreased significantly after ILP in patients with no TNF compared to pretreatment values (P < 0.05) and were significantly lower at 4 h, 48 h, and 1 week compared to ILP with TNF (P < 0.05). Values 6 weeks after ILP were significantly lower than before ILP in both investigated groups (P < 0.01). CONCLUSIONS: ILP with TNF results in activation of bone marrow–derived EPCs compared to ILP without TNF. Alteration of cEPCs and angiopoietin-2 by rhTNF-α might account for the cytotoxicity and hemorrhagic effects on tumor vessels during limb perfusion procedures. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1245/s10434-012-2637-3) contains supplementary material, which is available to authorized users. Springer US 2012-09-05 2013 /pmc/articles/PMC3764318/ /pubmed/22948772 http://dx.doi.org/10.1245/s10434-012-2637-3 Text en © The Author(s) 2012 https://creativecommons.org/licenses/by/4.0/ This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. |
spellingShingle | Translational Research and Biomarkers Nowak, Kai Jachol, Nicole Rafat, Neysan Joas, Elena Beck, Grietje Ch. Hohenberger, Peter Alterations of Circulating Bone Marrow–Derived VEGFR-2(+) Progenitor Cells in Isolated Limb Perfusion With or Without rhTNF-α |
title | Alterations of Circulating Bone Marrow–Derived VEGFR-2(+) Progenitor Cells in Isolated Limb Perfusion With or Without rhTNF-α |
title_full | Alterations of Circulating Bone Marrow–Derived VEGFR-2(+) Progenitor Cells in Isolated Limb Perfusion With or Without rhTNF-α |
title_fullStr | Alterations of Circulating Bone Marrow–Derived VEGFR-2(+) Progenitor Cells in Isolated Limb Perfusion With or Without rhTNF-α |
title_full_unstemmed | Alterations of Circulating Bone Marrow–Derived VEGFR-2(+) Progenitor Cells in Isolated Limb Perfusion With or Without rhTNF-α |
title_short | Alterations of Circulating Bone Marrow–Derived VEGFR-2(+) Progenitor Cells in Isolated Limb Perfusion With or Without rhTNF-α |
title_sort | alterations of circulating bone marrow–derived vegfr-2(+) progenitor cells in isolated limb perfusion with or without rhtnf-α |
topic | Translational Research and Biomarkers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3764318/ https://www.ncbi.nlm.nih.gov/pubmed/22948772 http://dx.doi.org/10.1245/s10434-012-2637-3 |
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