Endostatin gene therapy stimulates upregulation of ICAM-1 and VCAM-1 in a metastatic renal cell carcinoma model

Endostatin gene therapy stimulates upregulation of ICAM-1 and VCAM-1 in a metastatic renal cell carcinoma model

Author Chaves, K. C. B. Autor UNIFESP Google Scholar
Peron, J. P. S. Google Scholar
Chammas, R. Google Scholar
Turaca, L. T. Autor UNIFESP Google Scholar
Pesquero, J. B. Autor UNIFESP Google Scholar
Braga, M. S. Autor UNIFESP Google Scholar
Foguer, K. Autor UNIFESP Google Scholar
Schor, N. Autor UNIFESP Google Scholar
Bellini, M. H. Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
Abstract One of the greatest challenges in urological oncology is renal cell carcinoma (RCC), which is the third leading cause of death in genitourinary cancers. RCCs are highly vascularized and respond positively to antiangiogenic therapy. Endostatin (ES) is a fragment of collagen XVIII that possesses antiangiogenic activity. in this study, we examined the potential of ES-based antiangiogenic therapy to activate tumor-associated endothelial cells in metastatic RCC (mRCC). Balb/c-bearing Renca cells were treated with NIH/3T3-LendSN or, as a control, with NIH/3T3-LXSN cells. the T-cell subsets and lymphocyte populations of tumors, mediastinal lymph nodes and the spleen were assessed by flow cytometry. the expression of intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) was assessed by real-time PCR, flow cytometry and immunohistochemistry analysis. ES gene therapy led to an increase in the percentage of infiltrating CD4-interferon (IFN)-gamma cells (P<0.05), CD8-IFN-gamma cells (P<0.01) and CD49b-tumor necrosis factor-alpha cells (P<0.01). in addition, ES therapy caused an increase at the mRNA level of ICAM-1 (1.4-fold; P<0.01) and VCAM-1 (1.5-fold) (control vs treated group; P<0.001). Through flow cytometry, we found a significant increase in the CD34/ICAM-1 cells (8.1-fold; P<0.001) and CD34/VCAM-1 cells (1.6-fold; P<0.05). ES gene therapy induced a significant increase in both T CD4 and CD8 cells in the lymph nodes and the spleen, suggesting that ES therapy may facilitate cell survival or clonal expansion. CD49b cells were also present in increased quantities in all of these organs. in this study, we demonstrate an antitumor inflammatory effect of ES in an mRCC model, and this effect is mediated by an increase in ICAM-1 and VCAM-1 expression in tumor-associated endothelial cells.
Keywords RCC
endostatin
orthotopic metastatic model
ICAM-1
VCAM-1
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Grant number FAPESP: 2009/54253-6
FAPESP: 2009/12518-9
Date 2012-08-01
Published in Cancer Gene Therapy. London: Nature Publishing Group, v. 19, n. 8, p. 558-565, 2012.
ISSN 0929-1903 (Sherpa/Romeo, impact factor)
Publisher Nature Publishing Group
Extent 558-565
Origin http://dx.doi.org/10.1038/cgt.2012.32
Access rights Closed access
Type Article
Web of Science ID WOS:000306507900007
URI http://repositorio.unifesp.br/handle/11600/35146

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