These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Impact of vessel maturation on antiangiogenic therapy in ovarian cancer.
    Author: Lu C, Thaker PH, Lin YG, Spannuth W, Landen CN, Merritt WM, Jennings NB, Langley RR, Gershenson DM, Yancopoulos GD, Ellis LM, Jaffe RB, Coleman RL, Sood AK.
    Journal: Am J Obstet Gynecol; 2008 Apr; 198(4):477.e1-9; discussion 477.e9-10. PubMed ID: 18395047.
    Abstract:
    OBJECTIVE: The purpose of this study was to examine the functional and therapeutic significance of pericytes in ovarian cancer vasculature. STUDY DESIGN: Tumor vessel morphologic condition and efficacy of endothelial and pericyte targeting were examined with the use of in vivo ovarian cancer models. The expression of platelet-derived growth factor (PDGF) ligands and receptors was examined in endothelial, pericyte-like, and ovarian cancer cells. RESULTS: Relative to normal vessels, tumor vasculature was characterized by loosely attached pericytes in reduced density. PDGF-BB was expressed predominantly by the endothelial and cancer cells, whereas PDGFRbeta was present in pericyte-like cells. PDGF-BB significantly increased the migration of and VEGF production by pericyte-like cells; PDGFRbeta blockade abrogated these effects. Dual VEGF (VEGF-Trap) and PDGF-B (PDGF-Trap) targeted therapy was more effective in inhibiting in vivo tumor growth than either agent alone. CONCLUSION: Aberrations in the tumor microenvironment contribute to endothelial cell survival. Strategies that target both endothelial cells and pericytes should be considered for clinical trials.
    [Abstract] [Full Text] [Related] [New Search]