Adrenomedullin antagonist suppresses in vivo growth of human pancreatic cancer cells in SCID mice by suppressing angiogenesis.

Abstract:

:Since it is reported that adrenomedullin (AM) upregulated by hypoxia inhibits hypoxic cell death, we examined the effects of AM antagonist (AM C-terminal fragment; AM(22-52)) on the growth of pancreatic cancer cells. We, for the first time, demonstrated that AM antagonist significantly reduced the in vivo growth of the pancreatic cancer cell line. Immunohistochemical analysis demonstrated that the mean diameter of blood vessels was significantly smaller in the tumor tissues treated with AM antagonist than in those treated with AM N-terminal fragment (AM(1-25)), and that the PCNA-labeling index was lower in the former than in the latter. Then we demonstrated that AM antagonist showed no effect on the in vitro growth of the pancreatic cancer cell line. These results showed that AM played an important role in the growth of pancreatic cancer cells in vivo, suggesting that AM antagonist might be a useful tool for treating pancreatic cancers.

journal_name

Oncogene

journal_title

Oncogene

authors

Ishikawa T,Chen J,Wang J,Okada F,Sugiyama T,Kobayashi T,Shindo M,Higashino F,Katoh H,Asaka M,Kondo T,Hosokawa M,Kobayashi M

doi

10.1038/sj.onc.1206207

subject

Has Abstract

pub_date

2003-02-27 00:00:00

pages

1238-42

issue

8

eissn

0950-9232

issn

1476-5594

pii

1206207

journal_volume

22

pub_type

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