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An In Vivo Model to Study the Effects of Tumoral Soluble Factors on the Vascular Permeability in Mice

  • César Alejandro Guzmán-PérezEmail author
  • Alfredo Ibarra-Sánchez
  • José Luis Ventura-Gallegos
  • Claudia González-Espinosa
  • Jonathan García-Román
  • Alejandro Zentella-Dehesa
Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 1165)

Abstract

Some cancer cell lines release soluble factors that activate the endothelial cells in vitro; also endothelial activation in vivo includes an increased expression of adhesion molecules on the apical membrane, and an increased permeability, which may contribute to the extravasation process of circulating cells. We have adapted the Miles assay into a protocol that uses IgE/antigen complex and VEGF-1 as controls. The Miles assay comprises the intradermic injection of a pro-inflammatory agent into the skin and the intravenous introduction of a dye; the increase in vascular permeability will allow for the extravasation of the dye and thus the skin will be stained. The dye is then extracted from the dissected skin and quantified by spectrophotometry. The use of localized treatments will allow for testing a larger number of experimental samples in the same animal. With this model, the effects of tumoral soluble factors (TSFs) on endothelial permeability can be studied, as well as the signaling pathways involved. It can also serve to study the interactions between endothelial, immune, and cancer cells during the extravasation process.

Key words

Cancer Endothelium Vascular permeability Metastasis Extravasation Tumoral soluble factors 

Notes

Acknowledgements

César Alejandro Guzmán Pérez received a master’s scholarship from the Mexican National Council for Science and Technology (CONACyT, Grant 245198). The authors thank M. Sc. Layla Ortiz and Dr. Melissa Boyd for their assistance in translating the manuscript.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • César Alejandro Guzmán-Pérez
    • 1
    • 2
    Email author
  • Alfredo Ibarra-Sánchez
    • 3
  • José Luis Ventura-Gallegos
    • 1
    • 2
  • Claudia González-Espinosa
    • 3
  • Jonathan García-Román
    • 2
  • Alejandro Zentella-Dehesa
    • 1
    • 2
  1. 1.Departamento de Medicina Genómica y Toxicología AmbientalInstituto de Investigaciones Biomédicas, UNAMMéxicoMéxico
  2. 2.Unidad de BioquímicaInstituto Nacional de Ciencias Médicas y Nutrición “Salvador Zubirán” SSAMéxicoMéxico
  3. 3.Departamento de FarmacobiologíaCentro de Investigación y de Estudios Avanzados (Cinvestav), Sede Sur.MéxicoMéxico

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