Quantification of sprouting angiogenesis under the effect of different growth factors involved in the tumor microenvironmen

Del Amo, C. (Universidad de Zaragoza) ; Borau, C. (Universidad de Zaragoza) ; Asín, J. (Universidad de Zaragoza) ; García-Aznar, J. M. (Universidad de Zaragoza)

Resumen: One of the most important problems in tumor control is the management of metastatic process. Angiogenesis or the formation of new blood vessels from preexisting ones plays a crucial role in the expansion of the tumor by providing oxygen, nutrition and conduits for cancer cells to invade and metastasize new tissues¹. Abnormalities of growth factors (GFs) released such as PDGFs (Platelet Derived Growth Factor) could be involved in malignant human diseases2,3. Inflammation and cancer present similar mechanisms of development including angiogenesis or cell proliferation4. In order to know the effect on sprouting promotion of GFs existent in the tumor environment such as VEGF (Vascular Endothelial Growth Factor), PDGF, BMP2 (Bone Morphogenetic Protein 2) or TGF-ß (Transforming Growth Factor-ß), we have developed a microfluidic-based test based on devices designed by Farahat et al. (2012)5, which allows to the user the quantification of sprouting formation under the effect of these GFs. TGF-ß pathway involved in tumor progression in multiple human cancers, instigates phenotypical changes affecting to the cell growth, differentiation and migration6. Knowing the overexpression of GFs such as VEGF or BMP2 in tumors7,8, we aimed to compare its effect on endothelial cells in angiogenesis. Analyzing the promotion of sprout in normal conditions under GFs addition would be possible to determine which of these molecules could decrease or promote the advance of the endothelial cells. The results obtained in this work indicated that VEGF is the most important factor to enhance the angiogenic process while non-specific factors such as BMP2 or TGF-ß show a low effectiveness. In the case of PDGF, the negative effect of this molecule observed in our assays could be explained by the non-optimal balance of concentration. Furthermore, we are currently working to quantify the effect of fluid flow on the sprouting promotion.

Idioma: Inglés

DOI: 10.1158/2326-6074.TUMIMM16-B85

Año: 2017

Publicado en: Cancer immunology research 5, 3 (2017), B85
ISSN: 2326-6066

Factor impacto JCR: 9.188 (2017)

Categ. JCR: ONCOLOGY rank: 16 / 223 = 0.072 (2017) - Q1 - T1
Categ. JCR: IMMUNOLOGY rank: 10 / 155 = 0.065 (2017) - Q1 - T1

Factor impacto SCIMAGO: 4.956 - Immunology (Q1) - Cancer Research (Q1)

Financiación: info:eu-repo/grantAgreement/EUR/FP7/ERC2012-StG-306751
Financiación: info:eu-repo/grantAgreement/ES/MEC/FPU13-03194
Financiación: info:eu-repo/grantAgreement/ES/MINECO/DPI2015-64221-C2-1-R

Tipo y forma: Congress (Published version)

Área (Departamento): Área Estadís. Investig. Opera. (Dpto. Métodos Estadísticos)
Área (Departamento): Área Mec.Med.Cont. y Teor.Est. (Dpto. Ingeniería Mecánica)