メラノスタチン(Melanostatin)は、オキシトシンの切断により生じる内在性ペプチド断片であるが、体内でオキシトシンとは異なる活性を示す[1][2]Pro-Leu-Gly-NH2の配列のトリペプチドである。Melanocyte-inhibiting factor(MIF-1)とも言う。オピオイド受容体の活性化の影響を阻害する[3][4][5][6][7][8]と同時にドーパミン受容体D2及びD4の正のアロステリック調節因子となり[9][10][11][12][13][14][15][16][17]、またαメラニン細胞刺激ホルモン[18][19][20]等の他の神経ペプチドの放出阻害、メラトニン活性の増強などの活性[21]により、様々な効果を示す。

メラノスタチン
IUPAC命名法による物質名
臨床データ
MedlinePlus a605038
薬物動態データ
生物学的利用能100% (injected)
代謝plasma protease enzymes
排泄N/A
データベースID
CAS番号
2002-44-0 チェック
PubChem CID: 92910
ChemSpider 83871 ×
UNII 3KY24B4Q62 ×
化学的データ
化学式C13H24N4O3
分子量284.355 g/mol
テンプレートを表示

メラノスタチンの投与は、この複雑な作用の組み合わせによって、抗うつ薬[22][23][24]スマートドラッグ[25][26][27][28]抗パーキンソン病薬としての効果を示し[29][30][31]、様々な医療用途で研究が行われている。血中での代謝に耐性を持ち[32]血液脳関門を容易に通過するが[33][34]、経口では効果が弱く、注射で投与される。重要な作用を持つ、密接に関連した他のペプチドとしては、Tyr-MIF-1やエンドモルフィン-1及び-2等がある[35][36][37][38][39]

出典

編集
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関連項目

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