Cargando…
Targeting the pro-angiogenic forms of VEGF or inhibiting their expression as anti-cancer strategies
Tumor growth relies on oxygen and blood supply depending on neo-vascularization. This process is mediated by the Vascular Endothelial Growth Factor (VEGF) in many tumors. This paradigm has led to the development of specific therapeutic approaches targeting VEGF or its receptors. Despite their promis...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Impact Journals LLC
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5354723/ https://www.ncbi.nlm.nih.gov/pubmed/27999187 http://dx.doi.org/10.18632/oncotarget.13942 |
_version_ | 1782515373668564992 |
---|---|
author | Guyot, Mélanie Hilmi, Caroline Ambrosetti, Damien Merlano, Marco Nigro, Cristiana Lo Durivault, Jérôme Grépin, Renaud Pagès, Gilles |
author_facet | Guyot, Mélanie Hilmi, Caroline Ambrosetti, Damien Merlano, Marco Nigro, Cristiana Lo Durivault, Jérôme Grépin, Renaud Pagès, Gilles |
author_sort | Guyot, Mélanie |
collection | PubMed |
description | Tumor growth relies on oxygen and blood supply depending on neo-vascularization. This process is mediated by the Vascular Endothelial Growth Factor (VEGF) in many tumors. This paradigm has led to the development of specific therapeutic approaches targeting VEGF or its receptors. Despite their promising effects, these strategies have not improved overall survival of patients suffering from different cancers compared to standard therapies. We hypothesized that the existence of anti-angiogenic forms of VEGF VEGFxxxb which are still present in many tumors limit the therapeutic effects of the anti-VEGF antibodies bevacizumab/Avastin (BVZ). To test this hypothesis, we generated renal cell carcinoma cells (RCC) expressing VEGF165b. The incidence of tumors xenografts generated in nude mice and their growth were inferior to those obtained with control cells. Whereas BVZ had no effect on control tumors, it slowed-down the growth of tumor generated with VEGF165b expressing cells. A prophylactic immunization against the domain discriminating VEGF from VEGFxxxb isoforms inhibited the growth of tumor generated with two different syngenic tumor cell lines (melanoma (B16 cells) and RCC (RENCA cells)). Purified immunoglobulins from immunized mice also slowed-down tumor growth of human RCC xenografts in nude mice, producing a potent effect compared to BVZ in this model. Furthermore, down-regulating the serine-arginine-rich splicing factor 1 (SRSF1) or masking SRSF1 binding sites by 2’O-Methyl RNA resulted in the increase of the VEGFxxxb/VEGF ratio. Therefore, a vaccine approach, specific antibodies against pro-angiogenic forms of VEGF, or increasing the VEGFxxxb/VEGF ratio may represent new prophylactic or pro-active anti-cancer strategies. |
format | Online Article Text |
id | pubmed-5354723 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Impact Journals LLC |
record_format | MEDLINE/PubMed |
spelling | pubmed-53547232017-04-14 Targeting the pro-angiogenic forms of VEGF or inhibiting their expression as anti-cancer strategies Guyot, Mélanie Hilmi, Caroline Ambrosetti, Damien Merlano, Marco Nigro, Cristiana Lo Durivault, Jérôme Grépin, Renaud Pagès, Gilles Oncotarget Research Paper Tumor growth relies on oxygen and blood supply depending on neo-vascularization. This process is mediated by the Vascular Endothelial Growth Factor (VEGF) in many tumors. This paradigm has led to the development of specific therapeutic approaches targeting VEGF or its receptors. Despite their promising effects, these strategies have not improved overall survival of patients suffering from different cancers compared to standard therapies. We hypothesized that the existence of anti-angiogenic forms of VEGF VEGFxxxb which are still present in many tumors limit the therapeutic effects of the anti-VEGF antibodies bevacizumab/Avastin (BVZ). To test this hypothesis, we generated renal cell carcinoma cells (RCC) expressing VEGF165b. The incidence of tumors xenografts generated in nude mice and their growth were inferior to those obtained with control cells. Whereas BVZ had no effect on control tumors, it slowed-down the growth of tumor generated with VEGF165b expressing cells. A prophylactic immunization against the domain discriminating VEGF from VEGFxxxb isoforms inhibited the growth of tumor generated with two different syngenic tumor cell lines (melanoma (B16 cells) and RCC (RENCA cells)). Purified immunoglobulins from immunized mice also slowed-down tumor growth of human RCC xenografts in nude mice, producing a potent effect compared to BVZ in this model. Furthermore, down-regulating the serine-arginine-rich splicing factor 1 (SRSF1) or masking SRSF1 binding sites by 2’O-Methyl RNA resulted in the increase of the VEGFxxxb/VEGF ratio. Therefore, a vaccine approach, specific antibodies against pro-angiogenic forms of VEGF, or increasing the VEGFxxxb/VEGF ratio may represent new prophylactic or pro-active anti-cancer strategies. Impact Journals LLC 2016-12-15 /pmc/articles/PMC5354723/ /pubmed/27999187 http://dx.doi.org/10.18632/oncotarget.13942 Text en Copyright: © 2017 Guyot et al. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Paper Guyot, Mélanie Hilmi, Caroline Ambrosetti, Damien Merlano, Marco Nigro, Cristiana Lo Durivault, Jérôme Grépin, Renaud Pagès, Gilles Targeting the pro-angiogenic forms of VEGF or inhibiting their expression as anti-cancer strategies |
title | Targeting the pro-angiogenic forms of VEGF or inhibiting their expression as anti-cancer strategies |
title_full | Targeting the pro-angiogenic forms of VEGF or inhibiting their expression as anti-cancer strategies |
title_fullStr | Targeting the pro-angiogenic forms of VEGF or inhibiting their expression as anti-cancer strategies |
title_full_unstemmed | Targeting the pro-angiogenic forms of VEGF or inhibiting their expression as anti-cancer strategies |
title_short | Targeting the pro-angiogenic forms of VEGF or inhibiting their expression as anti-cancer strategies |
title_sort | targeting the pro-angiogenic forms of vegf or inhibiting their expression as anti-cancer strategies |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5354723/ https://www.ncbi.nlm.nih.gov/pubmed/27999187 http://dx.doi.org/10.18632/oncotarget.13942 |
work_keys_str_mv | AT guyotmelanie targetingtheproangiogenicformsofvegforinhibitingtheirexpressionasanticancerstrategies AT hilmicaroline targetingtheproangiogenicformsofvegforinhibitingtheirexpressionasanticancerstrategies AT ambrosettidamien targetingtheproangiogenicformsofvegforinhibitingtheirexpressionasanticancerstrategies AT merlanomarco targetingtheproangiogenicformsofvegforinhibitingtheirexpressionasanticancerstrategies AT nigrocristianalo targetingtheproangiogenicformsofvegforinhibitingtheirexpressionasanticancerstrategies AT durivaultjerome targetingtheproangiogenicformsofvegforinhibitingtheirexpressionasanticancerstrategies AT grepinrenaud targetingtheproangiogenicformsofvegforinhibitingtheirexpressionasanticancerstrategies AT pagesgilles targetingtheproangiogenicformsofvegforinhibitingtheirexpressionasanticancerstrategies |