RRC ID 65460
Author Kitano H, Mamiya A, Ishikawa T, Fujiwara Y, Masaoka Y, Miki T, Hidai C.
Title An Epidermal Growth Factor Motif of Developmental Endothelial Locus 1 Protein Inhibits Efficient Angiogenesis in Explanted Squamous Cell Carcinoma In Vivo.
Journal Rev Invest Clin
Abstract BACKGROUND:Cancer gene therapy using a nonviral vector is expected to be repeatable, safe, and inexpensive, and to have longterm effectiveness. Gene therapy using the E3 and C1 (E3C1) domain of developmental endothelial locus-1 (Del1) has been shown to improve prognosis in a mouse transplanted tumor model.
OBJECTIVE:In this study, we examined how this treatment affects angiogenesis in mouse transplanted tumors.
MATERIALS AND METHODS:Mouse transplanted tumors (SCCKN human squamous carcinoma cell line) were injected locally with a nonviral plasmid vector encoding E3C1 weekly. Histochemical analysis of the transplanted tumors was then performed to assess the effects of E3C1 on prognosis.
RESULTS:All mice in the control group had died or reached an endpoint within 39 days. In contrast, one of ten mice in the E3C1 group had died by day 39, and eight of ten had died or reached an endpoint by day 120 (p < 0.01). Enhanced apoptosis in tumor stroma was seen on histochemical analyses, as was inhibited tumor angiogenesis in E3C1-treated mice. In addition, western blot analysis showed decreases in active Notch and HEY1 proteins.
CONCLUSION:These findings indicate that cancer gene therapy using a nonviral vector encoding E3C1 significantly improved life-span by inhibiting tumor angiogenesis.
Volume 73(1)
Pages 039-051
Published 2020-5-7
DOI 10.24875/RIC.20000375
PMID 33052897
MeSH Amino Acid Motifs Animals Calcium-Binding Proteins / genetics Calcium-Binding Proteins / therapeutic use* Carcinoma, Squamous Cell / blood supply* Carcinoma, Squamous Cell / therapy* Cell Adhesion Molecules / genetics Cell Adhesion Molecules / therapeutic use* Discoidin Domain* / genetics Epidermal Growth Factor / genetics Epidermal Growth Factor / therapeutic use* Genetic Therapy* Mice Mice, Nude Neoplasm Transplantation Neovascularization, Pathologic / therapy* Tumor Cells, Cultured
Human and Animal Cells SCCKN(RCB0441)