PEX inhibits human melanoma (M21L) growth in nude mice.
(A) Two representative examples of nude mice 20 days
after tumor implantation injected with PBS (Left) or
with PEX-LV (Right). (B) Analysis of
tumor volume starting 5 days after tumor implantation. Five days after
implanting the tumors, PBS (black), Lac-LV (blue), or PEX-LV (red) was
injected around the tumor, n = 7, for each group.
(C) Analysis of PEX expression and vascularization in
tumors. Staining with polyclonal Abs against FLAG-tag
(i) and CD31(PECAM-1) (ii) in a section
through a tumor treated with PEX-LV. (iii) Merger of
i and ii. (iv)
Representative histological sections of a PBS-treated tumor. The arrows
indicate the border of the tumor. (D and
E) Effect of PEX on tumor weight (D) and
tumor-induced angiogenesis (E).