JP5480139B2 - 食欲制御用化合物 - Google Patents
食欲制御用化合物 Download PDFInfo
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- JP5480139B2 JP5480139B2 JP2010522452A JP2010522452A JP5480139B2 JP 5480139 B2 JP5480139 B2 JP 5480139B2 JP 2010522452 A JP2010522452 A JP 2010522452A JP 2010522452 A JP2010522452 A JP 2010522452A JP 5480139 B2 JP5480139 B2 JP 5480139B2
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Description
wtまたは+/+ - 129/SvEv株の野生型マウス
GPR100-/-、-/-またはGPR100欠損 - 129/SvEvをバックグランドとし、GPR100がホモ接合型欠失の動物
RER - 呼吸交換率
EE - エネルギー消費
HFD - 高脂肪食
HCD - 高炭水化物食
Insl5は、摂食条件に応答して大腸の腸内分泌細胞から分泌されるホルモンである
GPR100欠損動物に認められる微妙な代謝表現型を探るために、GPR100およびその内因性リガンドInsl5の発現パターンを調べた。
GPR100欠損動物における食事の量および頻度ならびに主要栄養素嗜好性の変化
代謝および飼料摂取挙動に対するGPR100の喪失を更に探るために、生存期間が相応する雄性マウスのwt 4匹およびGPR100欠損型4匹に、総合実験動物モニタリングシステム(CLAMS; Columbus Instruments Ltd.)を用いて、絶食および飼料再摂取の手順を施した。CLAMSは、チャンバーを8個、チャンバー1個につき、2食の消費量を独立にモニターする2個のフードホッパー、赤外線ビーム遮断に基づく活動モニター、水摂取量モニタリング、および間接熱量計を装備している。マウスは、高脂肪食(HFD; 35kcal%の炭水化物、45kcal%の脂肪)およびほぼ等カロリーの高炭水化物食(HCD; 70kcal%の炭水化物、10kcal%の脂肪)の選択権を与えられた。1昼目に馴らした後、動物を終夜絶食させ、2昼目から48時間後の実験終了まで食物の選択に戻した(図4)。
Insl5の投与は、wtにおいて飼料摂取を誘発するが、GPR100 -/-マウスでは誘発しない
Insl5は食欲増進ホルモンであるという仮説を直接試験するために、それをwtおよびGPR100 -/-マウスの腹腔内に投与した。Insl5は、wt動物における食物摂取量の増加を用量依存的に誘発する(図9、上側パネル)。GPR100 -/-マウスでは、Insl5は飼料摂取挙動に全く作用しない(図9、下側パネル)。これは、Insl5が食欲増進作用を有することを実証している。その上、この作用はGPR100を通して媒介される。
大腸運動はGPR100 -/-マウスにおいて変化する
公表および内部の発現データは、Insl5およびGPR100の双方が大腸内で発現することを示唆している。このことから、このリガンド受容体系が、大腸運動の調節に関与していることを示すことができよう。回腸から大腸に入る容量の90%もが、大腸の中を移動する際に吸収される。その残りは、容量が減少していく結果、肛門に近づくにつれ移動が遅くなるペレットに圧縮される。排便の準備ができた成熟ペレットは、直腸内に貯蔵される。排便は、様々な機構により誘発されるが、その機構の1つは胃肛門反射である。多量の食事の消費による胃の膨張が、排便を誘発する。こうした機構におけるGPR100の潜在的な関与を探るために、自由に飼料を摂取していた動物を屠殺し、外植した大腸における肛門までの距離として、ペレットの位置を測定した。wt動物における肛門までの距離に亘る頻度分布は、大腸の遠位部ほど速度が減少することと関連している。その結果、大部分のペレットは、大腸の最後部の9mmに観察された(図10)。GPR100 -/-動物における分布は、より近位の大腸セグメントでは同様であるが、最も遠位の2セグメントにおけるペレット含量は、減少しており、これは、ペレットが、しばらく貯蔵される代わりに放出されることを示している。
以上の知見からの結論は、INSL5が食欲増進性の腸内分泌ホルモンであることである。その分泌は、飼料摂取条件により調節される。具体的には、食物消費がInsl5の分泌を抑制するが、絶食は誘発する。大腸における主要な発現を前提とすれば、絶食動物における高い血漿濃度の早期(15分)抑制は、恐らく神経性または内分泌性のシグナルによる。後期の低濃度は、大腸内栄養素の直接作用に媒介されるとも思われる。
Claims (8)
- 食欲減退を特徴とする疾患の治療用医薬の製造における、(i)Insl5、または(ii)その誘導体もしくは断片であって、そのアミノ酸配列が(i)のInsl5のアミノ酸配列に対して90%を超える同一性を有し、かつ、GPR100 Gタンパク質共役受容体に対する結合能を保持する、誘導体もしくは断片の使用。
- 前記疾患が、拒食症、悪液質または消耗性疾患である、請求項1に記載の使用。
- 前記医薬が、(i)グレリン、または(ii)その誘導体もしくは断片であって、Gly-Ser-Ser(n-オクタノイル)-Pheセグメントを含み、かつ、hGHSR1aに対する結合能を保持する、誘導体もしくは断片を含む、請求項1または請求項2に記載の使用。
- 食欲減退を特徴とする疾患の治療に使用するための、(i)Insl5、または(ii)その誘導体もしくは断片であって、そのアミノ酸配列が(i)のInsl5のアミノ酸配列に対して90%を超える同一性を有し、かつ、GPR100 Gタンパク質共役受容体に対する結合能を保持する、誘導体もしくは断片を含む組成物。
- 前記疾患が、拒食症、悪液質または消耗性疾患である、請求項4に記載の組成物。
- 請求項3に規定したグレリンを更に含む、請求項5に記載の組成物。
- (i)グレリン、または(ii)その誘導体もしくは断片であって、Gly-Ser-Ser(n-オクタノイル)-Pheセグメントを含み、かつ、hGHSR1aに対する結合能を保持する、誘導体もしくは断片、および(iii)Insl5、または(iv)その誘導体もしくは断片であって、そのアミノ酸配列が(iii)のInsl5のアミノ酸配列に対して90%を超える同一性を有し、かつ、GPR100 Gタンパク質共役受容体に対する結合能を保持する、誘導体もしくは断片
を含む食欲増進用組成物。 - 治療に使用するための請求項7に記載の組成物。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0717450.1 | 2007-09-07 | ||
| GBGB0717450.1A GB0717450D0 (en) | 2007-09-07 | 2007-09-07 | Medicament |
| PCT/GB2008/003023 WO2009030931A1 (en) | 2007-09-07 | 2008-09-05 | Compound for controlling appetite |
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| JP2014025181A Division JP2014129370A (ja) | 2007-09-07 | 2014-02-13 | 食欲制御用化合物 |
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| JP5480139B2 true JP5480139B2 (ja) | 2014-04-23 |
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| JP2010522452A Expired - Fee Related JP5480139B2 (ja) | 2007-09-07 | 2008-09-05 | 食欲制御用化合物 |
| JP2014025181A Pending JP2014129370A (ja) | 2007-09-07 | 2014-02-13 | 食欲制御用化合物 |
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| US (2) | US8642539B2 (ja) |
| EP (1) | EP2190458A1 (ja) |
| JP (2) | JP5480139B2 (ja) |
| CA (1) | CA2697930A1 (ja) |
| GB (1) | GB0717450D0 (ja) |
| WO (1) | WO2009030931A1 (ja) |
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| JP5983682B2 (ja) | 2014-06-24 | 2016-09-06 | スズキ株式会社 | 自動二輪車の車体フレーム構造 |
| CN108490178B (zh) * | 2018-02-13 | 2019-08-30 | 中山大学肿瘤防治中心(中山大学附属肿瘤医院、中山大学肿瘤研究所) | 用于npc诊断及预后预测的标志物及其应用 |
| CN116134051A (zh) * | 2020-08-04 | 2023-05-16 | 伊莱利利公司 | 靶向人和小鼠insl5的化合物和方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1660518A2 (en) | 2003-08-07 | 2006-05-31 | Janssen Pharmaceutica N.V. | Complexes of gpcr142 and relaxin3 or insl5, and their production and use |
| AU2005210369B2 (en) * | 2004-02-09 | 2008-11-13 | Eisai R & D Management Co., Ltd. | Screening method |
| CA2571517A1 (en) * | 2004-06-21 | 2005-12-29 | Paradigm Therapeutics Limited | Uses of gpr100 receptor in diabetes and obesity regulation |
| CA2587627A1 (en) * | 2004-11-15 | 2006-05-26 | Eli Lilly And Company | Desacyl ghrelin antibodies and therapeutic uses thereof |
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2007
- 2007-09-07 GB GBGB0717450.1A patent/GB0717450D0/en not_active Ceased
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- 2008-09-05 US US12/675,724 patent/US8642539B2/en not_active Expired - Fee Related
- 2008-09-05 EP EP08788554A patent/EP2190458A1/en not_active Withdrawn
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| Publication number | Publication date |
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| WO2009030931A1 (en) | 2009-03-12 |
| CA2697930A1 (en) | 2009-03-12 |
| JP2014129370A (ja) | 2014-07-10 |
| JP2010537965A (ja) | 2010-12-09 |
| EP2190458A1 (en) | 2010-06-02 |
| US8642539B2 (en) | 2014-02-04 |
| US20140161795A1 (en) | 2014-06-12 |
| GB0717450D0 (en) | 2007-10-17 |
| US20100272727A1 (en) | 2010-10-28 |
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