JP6413008B2 - フタリド化合物の使用 - Google Patents
フタリド化合物の使用 Download PDFInfo
- Publication number
- JP6413008B2 JP6413008B2 JP2017500053A JP2017500053A JP6413008B2 JP 6413008 B2 JP6413008 B2 JP 6413008B2 JP 2017500053 A JP2017500053 A JP 2017500053A JP 2017500053 A JP2017500053 A JP 2017500053A JP 6413008 B2 JP6413008 B2 JP 6413008B2
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- Prior art keywords
- acid
- medicament
- phthalide
- pharmaceutical composition
- zebrafish
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/365—Lactones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/14—Drugs for disorders of the nervous system for treating abnormal movements, e.g. chorea, dyskinesia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/14—Drugs for disorders of the nervous system for treating abnormal movements, e.g. chorea, dyskinesia
- A61P25/16—Anti-Parkinson drugs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- Chemical & Material Sciences (AREA)
- Public Health (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Psychology (AREA)
- Hospice & Palliative Care (AREA)
- Psychiatry (AREA)
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
(細胞トランスフェクション)
この実験では、SCA3タンパク質のタンパク質発現レベルに対するBPおよびリグスチリドの効果を分析した。最初に、緑色蛍光タンパク質またはpEGFP−C1−Ataxin3Q28プラスミド(すなわち、正常なCAGリピート数(28Q)を有するAtaxin遺伝子を含むプラスミド)(アドジーン社、米国)を含むpEGFP−C1−Ataxin3Q84プラスミド(すなわち、異常なCAGリピート数(84Q)を有するAtaxin遺伝子を含むプラスミド)を、ヒト胚性腎臓(HEK)細胞293T(バイオリソースコレクションアンドリサーチセンター、台湾)または神経幹細胞(NSC)にトランスフェクトした。次いで、細胞を、10%ウシ胎仔血清(ギブコ社)を含有するDMEM培地(ダルベッコ改変イーグル培地、サーモ社)中で培養し、37℃、5%CO2で、インキュベーター中でインキュベートした。次いで、細胞を24時間、5μg/mlのBP(A10353、アルファアーサー社(米国)から購入;純度95%)またはリグスチリド(5393−015M1、ファルマロン社(中国)から購入)で処理した。各群の細胞におけるGFP−ATXN3タンパク質のタンパク質凝集を蛍光顕微鏡により観察した。野生型細胞および緑色蛍光タンパク質(GFP)でトランスフェクトした細胞を対照群として使用した。実験結果を図1に示す。
(1)安全投与量試験
この実験では、実験群の動物モデルとして使用されたゼブラフィッシュは、Tg(HuC:GFP)であり、それは、蛍光を生成することができるその主要な感覚ニューロン(Rohon−Beard細胞)によって特徴付けられる。対照群で用いたゼブラフィッシュは、野生型ゼブラフィッシュであった。すべてのゼブラフィッシュは、TZCAS(アカデミア・シニカ(台湾)の台湾ゼブラフィッシュコア施設)およびTZCF(台湾ゼブラフィッシュコア施設(台湾))によって提供された。最初に、ゼブラフィッシュに対するBPの毒性を、ゼブラフィッシュに異なる用量のBPを注射することによって試験した。その後、ゼブラフィッシュは28.5℃に保たれた。48時間後、ゼブラフィッシュの生存率が観察された。
この実験では、ATXN3遺伝子のモルホリノDNA断片(ジーンツール社(米国)、以下「ATXN3 MO」と呼ぶ)を用いて、ゼブラフィッシュの内因性ATXN3の発現を不活性化し、それにより神経学的損傷の効果をもたらした。
ゼブラフィッシュの卵に、300nM/μlのATXN3 MO、250mg/kgのBP、または250mg/kgのBP、125mg/kgのBPもしくは62.5mg/kgのBPと組み合わせたATXN3 MOをマイクロインジェクションした。48時間後、ゼブラフィッシュをスライドガラスに封入した。生体内の運動ニューロンを共焦点蛍光顕微鏡で記録した。
MJD84.2トランスジェニックマウス(すなわち、ヒト84 CAGリピート配列を有するATXN3遺伝子をトランスフェクトしたマウス、以下、「SCA3マウス」と呼ぶ)をこの実験で使用した。MJD84.2トランスジェニックマウスは、脊髄小脳萎縮の研究に用いられる動物モデルであった。これらのマウスは、出生後4週間で異常な歩行を示し、軽度の振戦、中等度の活動減少、前肢/後肢の異常な収縮(約24週齢で)、および地面に横たわれなくなる状態を示す。
2週齢のMJD84.2トランスジェニックマウスを無作為に5群に分け、各群は6匹のマウスを有していた。マウスを以下の条件で2週間処理した:(1)未処理群;(2)オリーブ油で処理(すなわち、アジュバントでのみ処理);(3)100mg/kg/ 1日2回投与のBPで処理;(4)500mg/kg/1日2回投与のBPで処理した;(5)100mg/kg/1日2回投与のリグスチリドで処理。野生型マウス(WT)を対照群として使用した。2週間後、局所モーターおよびロータロッド試験を行った。
マウスの運動能力を試験するために、局所運動試験を行った。10週齢のマウスをロータロッドで3週間に1回、試験した。次いで、マウスを2時間、透明アクリルボックスに入れ、自由に動かした。VersaMax 420(AccuscanInstrumentsInc、米国)を用いて、行動試験を1時間行い、データを統計的方法で分析した。
ロータロッド試験を、マウスのバランスおよびグリップ能力を試験するために行った。マウスは、最初の行動試験の2週間前に練習を与えられた。実験を、IITCロータロッド(IITCライフサイエンス社、米国)を用いて行った。10週齢のマウスをロータロッドで3週間に1回、試験した。試験条件は、300秒以内に4〜40rpmの線形加速度として設定された。マウスがロータロッドから落下した時間(秒)(すなわち、落下までの待ち時間)を記録した。各試験を最大で5分間続け、マウスを疲労を避けるために、各試験の間に少なくとも15分間休息させた。ロータロッド試験後、マウスの体重を記録した。試験は1日3回、4日間連続して行い、統計的分析を、マウスがロータロッドから落ちる前の1日の平均時間を用いて行った。
8週齢のMJD84.2トランスジェニックマウス(すなわち、改変ATXN3遺伝子を有するマウス)を無作為に5群に分け、各群で6匹のマウスを用いた。マウスを以下の条件で処理した:(1)未処理群;(2)オリーブ油で処理;(3)100mg/kg/1日2回のBPで処理;(4)500mg/kg/1日2回のBPで処理;(5)100mg/kg/1日2回のリグスチリドで処理。その後、マウスを20週齢および24週齢で屠殺した。小脳スライス染色および組織タンパク質抽出を実施した(実施例5参照)。マウスの全脳組織を3.7%ホルマリンで一晩固定し、パラフィンに包埋した。Quantoキット(サーモ社、米国)を用いて試料を切片化し(4μm)、顕微鏡スライド上に載せた。
実施例4で屠殺したマウスの小脳を全脳から分離し、小脳のタンパク質を抽出した。 精製したタンパク質を、抗ユビキチン抗体および抗カルビンジン抗体を用いたウエスタンブロッティングアッセイにより分析し、各群のSCA3マウスの小脳組織におけるユビキチンおよびカルビンジンのタンパク質発現レベルの変化を測定した。β−アクチンを内部対照群として使用した。
(付記1)
プルキンエ細胞の変性を治療および/または遅延させるための医薬の製造のための、n−ブチリデンフタリド(BP)、BPの代謝前駆体、BPの代謝前駆体の薬学的に許容される塩、BPの代謝前駆体の薬学的に許容されるエステルおよびそれらの組み合わせからなる群から選択されるフタリドの使用。
前記フタリドは、BPである、
ことを特徴とする付記1に記載の使用。
前記BPは、Z−BPの少なくとも90%を構成する、
ことを特徴とする付記2に記載の使用。
前記フタリドは、BPの代謝前駆体、BPの代謝前駆体の薬学的に許容される塩および/またはBPの代謝前駆体の薬学的に許容されるエステルである、
ことを特徴とする付記1に記載の使用。
前記BPの代謝前駆体は、3−ブチリデン−4,5−ジヒドロフタリド(リグスチリド)である、
ことを特徴とする付記3に記載の使用。
前記医薬はさらに、担体としてオリーブ油を含む、
ことを特徴とする付記1に記載の使用。
前記医薬は、小脳におけるプルキンエ細胞の死を遅延または防止するためのものである、
ことを特徴とする付記1乃至6のいずれか1項に記載の使用。
前記医薬は、経口投与、経鼻投与もしくは静脈内注射のための剤形であるか、または皮下もしくは組織間投与のための制御放出剤形である、
ことを特徴とする付記1乃至6のいずれか1項に記載の使用。
前記医薬は、プルキンエ細胞における前記タンパク質のユビキチン化を増加させるためのものである、
ことを特徴とする付記1乃至6のいずれか1項に記載の使用。
前記医薬は、脊髄小脳萎縮、アルツハイマー病、パーキンソン病およびそれらの組み合わせの発症を治療および/または遅延させるためのものである、
ことを特徴とする付記1乃至6のいずれか1項に記載の使用。
前記医薬は、脊髄小脳萎縮の発症を治療および/または遅延させるためのものである、
ことを特徴とする付記1乃至6のいずれか1項に記載の使用。
前記医薬は、脊髄小脳萎縮3型の発症を治療および/または遅延させるためのものである、
ことを特徴とする付記1乃至6のいずれか1項に記載の使用。
Claims (7)
- 脊髄小脳萎縮3型の発症を治療および/または遅延させるための医薬組成物であって、フタリドを含み、当該フタリドは、n−ブチリデンフタリド(BP)、BPの代謝前駆体、BPの代謝前駆体の薬学的に許容される塩およびそれらの組み合わせからなる群から選択され、当該BPの代謝前駆体は、3−ブチリデン−4,5−ジヒドロフタリド(リグスチリド)である、医薬組成物。
- 前記フタリドは、BPである、
ことを特徴とする請求項1に記載の医薬組成物。 - 前記BPは、Z−BPの少なくとも90%を構成する、
ことを特徴とする請求項2に記載の医薬組成物。 - 前記フタリドは、3−ブチリデン−4,5−ジヒドロフタリド(リグスチリド)および/または3−ブチリデン−4,5−ジヒドロフタリド(リグスチリド)の薬学的に許容される塩である、
ことを特徴とする請求項1に記載の医薬組成物。 - 前記フタリドは、3−ブチリデン−4,5−ジヒドロフタリド(リグスチリド)である、
ことを特徴とする請求項4に記載の医薬組成物。 - さらに、担体としてオリーブ油を含む、
ことを特徴とする請求項1に記載の医薬組成物。 - 経口投与、経鼻投与もしくは静脈内注射のための剤形であるか、または皮下もしくは組織間投与のための制御放出剤形である、
ことを特徴とする請求項1乃至6のいずれか1項に記載の医薬組成物。
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