| RRC ID |
59969
|
| 著者 |
Hara M, Takeba Y, Iiri T, Ohta Y, Ootaki M, Watanabe M, Watanabe D, Koizumi S, Otsubo T, Matsumoto N.
|
| タイトル |
Vasoactive intestinal peptide increases apoptosis of hepatocellular carcinoma by inhibiting the cAMP/Bcl-xL pathway.
|
| ジャーナル |
Cancer Sci
|
| Abstract |
Vasoactive intestinal peptide (VIP) is a modulator of inflammatory responses. VIP receptors are expressed in several tumor types, such as colorectal carcinoma. The study described herein was conducted to confirm the presence of VIP and its receptors (VPAC1 and VPAC2) in surgically resected hepatocellular carcinoma (HCC) tissues and in the HCC cell line Huh7. The mechanism responsible for apoptosis of HCC cells was then examined because VIP treatment (10-10 M) significantly suppressed proliferation of Huh7 cells. In examining apoptosis-related proteins, we found caspase-3 to be significantly increased and Bcl-xL and cyclic AMP (cAMP) response element-binding protein (CREB) to be significantly decreased in Huh7 cells cultured with VIP. Furthermore, the CREB level and phosphorylation were reduced. These effects were reversed by the addition of VIP receptor antagonist or cAMP antagonist Rp-cAMPS. Pretreatment with cAMP analogue blocked the increased apoptosis, suggesting that VIP induces apoptosis via a PKA-independent signaling mechanism. Our data indicate that VIP prevents the progression of HCC by apoptosis through the cAMP/Bcl-xL pathway.
|
| 巻・号 |
110(1)
|
| ページ |
235-244
|
| 公開日 |
2019-1-1
|
| DOI |
10.1111/cas.13861
|
| PMID |
30390393
|
| PMC |
PMC6317926
|
| MeSH |
Animals
Apoptosis / drug effects*
Carcinoma, Hepatocellular / metabolism*
Carcinoma, Hepatocellular / pathology
Cell Line, Tumor
Cells, Cultured
Cyclic AMP / metabolism*
Cyclic AMP Response Element-Binding Protein / metabolism
Hep G2 Cells
Humans
Liver Neoplasms / metabolism*
Liver Neoplasms / pathology
Phosphorylation / drug effects
Receptors, Vasoactive Intestinal Peptide, Type II / metabolism
Receptors, Vasoactive Intestinal Polypeptide, Type I / metabolism
Signal Transduction / drug effects
Vasoactive Intestinal Peptide / metabolism
Vasoactive Intestinal Peptide / pharmacology*
bcl-X Protein / metabolism*
|
| IF |
4.751
|
| 引用数 |
4
|
| リソース情報 |
| ヒト・動物細胞 |
HuH-7
Hep G2(RCB1886) |
