RGD Reference Report - Soluble FLT-1 expression suppresses carcinomatous ascites in nude mice bearing ovarian cancer. - Rat Genome Database

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Soluble FLT-1 expression suppresses carcinomatous ascites in nude mice bearing ovarian cancer.

Authors: Hasumi, Y  Mizukami, H  Urabe, M  Kohno, T  Takeuchi, K  Kume, A  Momoeda, M  Yoshikawa, H  Tsuruo, T  Shibuya, M  Taketani, Y  Ozawa, K 
Citation: Hasumi Y, etal., Cancer Res. 2002 Apr 1;62(7):2019-23.
RGD ID: 2301253
Pubmed: PMID:11929819   (View Abstract at PubMed)

Vascular endothelial growth factor (VEGF), a bifunctional protein enhancing vascular permeability and stimulating endothelial growth, is thought to be responsible for fluid accumulation and angiogenesis in ascites tumors. To investigate the effects of stable expression of the soluble form of Flt-1 VEGF receptor (sFlt-1), a known endogenous inhibitor of VEGF, on the malignant ascites tumors, we cotransduced RMG-1 human ovarian cancer cells with adeno-associated virus vectors carrying the sFlt-1 cDNA and Neo gene or Neo gene alone and isolated both the sFlt-1-expressing clone and the Neo-expressing clone. In vitro growth characteristics were essentially the same. As expected, conditioned medium collected from the sFlt-1-expressing cells significantly inhibited the human umbilical vein endothelial cell proliferation in the presence of recombinant VEGF. Expression of sFlt-1 significantly suppressed RMG-1 cell-induced angiogenesis in vivo in the mouse dorsal air sac assay model. We then inoculated sFlt-1- or Neo alone-expressing cells i.p. into female BALB/c nude mice. The average volume of ascites fluid, number of leaked RBCs, and number of cancer cells were significantly lower in mice injected with sFlt-1-expressing cells than in the controls. Survival time was significantly prolonged in mice injected with sFlt-1-expressing cells. These results suggest that inhibition of VEGF activity by sFlt-1 expression may provide a means to control carcinomatous ascites and angiogenesis of malignant ascites tumors.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
FLT1HumanOvarian Neoplasms  ISOFlt1 (Mus musculus) RGD 
Flt1RatOvarian Neoplasms  ISOFlt1 (Mus musculus) RGD 
Flt1MouseOvarian Neoplasms  IMP  RGD 

Objects Annotated

Genes (Rattus norvegicus)
Flt1  (Fms related receptor tyrosine kinase 1)

Genes (Mus musculus)
Flt1  (FMS-like tyrosine kinase 1)

Genes (Homo sapiens)
FLT1  (fms related receptor tyrosine kinase 1)


Additional Information