| RRC ID |
1289
|
| 著者 |
Ohguchi K, Banno Y, Akao Y, Nozawa Y.
|
| タイトル |
Involvement of phospholipase D1 in melanogenesis of mouse B16 melanoma cells.
|
| ジャーナル |
J Biol Chem
|
| Abstract |
In response to alpha-melanocyte-stimulating hormone (alpha-MSH) or cAMP-elevating agents (forskolin and isobutylmethylxanthine), mouse B16 melanoma cells underwent differentiation characterized by increased melanin biosynthesis. However, the mechanism(s) underlying the regulation of melanogenesis during differentiation has not yet been clearly understood. Phospholipase D (PLD) has been reported to be involved in differentiation. This enzyme cleaves phosphatidylcholine upon stimulation with stimuli to generate phosphatidic acid. In the current study, the involvement of PLD in the regulation of melanogenesis characteristic of differentiation was examined using mouse B16 melanoma cells. Treatment of B16 cells with alpha-MSH was found to cause marked decreases in the PLD1 activity concurrent with its reduced protein level. Moreover, treatment of exogenous bacterial PLD also inhibited alpha-MSH-induced melanogenesis. To further investigate the role of PLD1 in the regulation of melanogenesis, we examined the effects of overexpression of PLD1 on melanogenesis in B16 melanoma cells. The B16 cells overexpressing PLD were prepared by transfection with the vector containing the cDNA encoding PLD1. The melanin contents in PLD1-overexpressing cells (B16/PLD1) were observed to be lower compared with those in the vector control cells (B16/Vec), concomitant with the decreases in both activity and protein level of tyrosinase, a key regulatory enzyme in melanogenesis. Moreover, overexpression of PLD1 resulted in a marked inhibition of melanogenesis induced by alpha-MSH. The inhibition of melanogenesis was well correlated with the decrease in the tyrosinase activity associated with its expression. These results indicated that PLD1 negatively regulated the melanogenic signaling by modulating the expression of tyrosinase in mouse B16 melanoma cells.
|
| 巻・号 |
279(5)
|
| ページ |
3408-12
|
| 公開日 |
2004-1-30
|
| DOI |
10.1074/jbc.M308054200
|
| PII |
S0021-9258(20)75136-7
|
| PMID |
14615486
|
| MeSH |
1-Butanol / pharmacology
Animals
Blotting, Western
Cell Differentiation
Cell Division
Cell Line, Tumor
Cyclic AMP / metabolism
DNA, Complementary / metabolism
Humans
Melanocytes / metabolism*
Melanoma, Experimental
Mice
Monophenol Monooxygenase / metabolism
Phosphatidic Acids / chemistry
Phosphatidylcholines / chemistry
Phospholipase D / chemistry
Phospholipase D / metabolism
Phospholipase D / physiology*
Time Factors
Transfection
|
| IF |
4.238
|
| 引用数 |
15
|
|
WOS 分野
|
BIOCHEMISTRY & MOLECULAR BIOLOGY
|
| リソース情報 |
| ヒト・動物細胞 |
B16 melanoma 4A5(RCB0557) |
