JP7028802B2 - 短鎖型桿体由来錐体生存因子及び親水性ペプチド間の融合タンパク質 - Google Patents
短鎖型桿体由来錐体生存因子及び親水性ペプチド間の融合タンパク質 Download PDFInfo
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- JP7028802B2 JP7028802B2 JP2018563544A JP2018563544A JP7028802B2 JP 7028802 B2 JP7028802 B2 JP 7028802B2 JP 2018563544 A JP2018563544 A JP 2018563544A JP 2018563544 A JP2018563544 A JP 2018563544A JP 7028802 B2 JP7028802 B2 JP 7028802B2
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Description
Annex C/ST.25テキストファイルの形態で電子的に提出された配列表と、付属ファイル参照番号WOC-019PCTは、開示の一部である。
配列番号1:融合タンパク質のN末端でヒトアルブミンを有する、ヒトアルブミンと短鎖RdCVFとの融合タンパク質のアミノ酸配列(ALB-RdCVFS)。
理論に縛られることを望むものではないが、短鎖型RdCVFを発現及び分泌することの困難性は、その高い疎水性アミノ酸組成に起因する可能性がある。短鎖型及び長鎖型ヒトRdCVFタンパク質の両方のアミノ酸組成を慎重に分析することにより、短鎖型RdCVFタンパク質が極めて疎水性であることが明らかになった(図1A及び1B)。短鎖RdCVFの109のうちの42アミノ酸(38.5%)は、疎水性アミノ酸である。1ストレッチの6つの疎水性アミノ酸、1ストレッチの4つの疎水性アミノ酸、及び2ストレッチの3つの疎水性アミノ酸がそれぞれ存在する。疎水性アミノ酸組成が高い割合であると、疎水性-疎水性相互作用を介して脂質膜に付着する可能性がより高いので、短鎖RdCVFを哺乳動物細胞からインビトロ及びインビボで効率的に発現及び分泌することを非常に困難にする可能性が高い。興味深いことに、長鎖型RdCVFのN末端109アミノ酸は短鎖RdCVF全体と同一であるが、長鎖RdCVFのC末端の103アミノ酸は疎水性ではなく、わずか25%のアミノ酸が疎水性であるのみである(103のうち26)。長鎖RdCVFのこのC末端における最も長い疎水性アミノ酸のストレッチの長さはわずか4アミノ酸である。3つの疎水性アミノ酸のストレッチはない。長鎖RdCVFのC末端における比較的親水性の性質は、長鎖RdCVFの全体的な疎水性を低下させるのに重要な役割を果たし得る。
Ala: 1.800
Arg: -4.500
Asn: -3.500
Asp: -3.500
Cys: 2.500
Gln: -3.500
Glu: -3.500
Gly: -0.400
His: -3.200
Ile: 4.500
Leu: 3.800
Lys: -3.900
Met: 1.900
Phe: 2.800
Pro: -1.600
Ser: -0.800
Thr: -0.700
Trp: -0.900
Tyr: -1.300
Val: 4.200
[実施例]
プラスミドクローニング
N末端でヒトアルブミンと融合しているコドン最適化されたヒト短鎖型RdCVFタンパク質のcDNAを、GENEART(登録商標)(フィー・フォー・サービスの会社)によって合成し、アデノ随伴ウイルスベクタープラスミドpAAV-MCS(Cell Biolabs社製、San Diego、CA)にクローニングし、プラスミドpAAV-ALB-RdCVFSを作製した。ヒトアルブミン由来のシグナルペプチドもまた、RdCVF及びアルブミン融合タンパク質コード配列の上流に組み込まれた。
プラスミドpAAV-ALB-RdCVFS又はpAAV-RdCVFS-ALB、pHELPER(Cell BioLabs社製、カタログ番号340202)及びpRC2(Cell BioLabs社製、カタログ番号340201)をDH10Bコンピテントバクテリア細胞(Invitrogen社製、カタログ番号18297-010)に形質転換し、Qiagen EndoFree Plasmid Maxi Kit又はEndoFree Plasmid Mega Kitを製造者の指示に従って使用してスケールアップした。Beckman DU-600分光光度計を用いてプラスミド濃度を測定した。各々のプラスミドの同一性は、制限酵素切断及びDNA配列決定分析によって確認した。
4~20%のSDS-PAGEゲルを用いたウエスタンブロット分析を用いて、標準技術を用いてRdCVF及びアルブミン融合タンパク質発現を検出した。対照として、5μL容量のMAGICMARK(商標)XPウエスタンタンパク質標準(Invitrogen社製、カタログ番号LC5602)を外側のウェルに添加した。タンパク質試料緩衝液と混合したrAAVベクター形質導入ヒト293細胞の各々からの細胞培養液30μLを各ウェルに添加した。染料がゲルの底に達するまでゲルを200Vで流した。ウエスタンブロット分析は、Vector Laboratories社のVECTASTAIN(登録商標)ABC-Ampウエスタンブロット分析キットを用いて、製造会社の修正版の使用説明書に従って行った。SDS-PAGEをトランスファーバッファーで20分間平衡化し、SDS-PAGEで分離したタンパク質をTrans Blot Semi-Dry Transfer Cellを用いて20Vで40分間、ニトロセルロース膜に転写した。転写が完了した後、室温(RT)で少なくとも2時間、又は4℃で終夜、ロッカープラットフォーム上で穏やかに撹拌しながら、200mLの1xカゼイン溶液中で膜をブロックした。4℃で終夜又は室温で1時間穏やかに撹拌しながら、1:2000に希釈したウサギ抗RdCVFタンパク質特異的抗体(一次抗体、Covance社(Denver、PA)によって生成された)を含む50mLの1xカゼイン溶液とともに、膜をインキュベートした。30mLの1xカゼイン溶液で4回、穏やかに撹拌しながら室温で各々5分間、膜を洗浄した。膜を、1:10000に希釈した30mLのビオチン化ヤギ抗ウサギIgG(二次抗体)とともに、1xカゼイン溶液中で穏やかに撹拌しながら室温で1時間インキュベートした。30mLの1xカゼイン溶液中で3回、穏やかに撹拌しながら室温で各々5分間、膜を洗浄した。100μLの試薬A及び100μLの試薬Bを含む50mLの1xカゼイン中のVectastain ABC-AmPで45分間、膜をインキュベートした。30mLの1xカゼイン溶液中で3回、室温で緩やかに撹拌しながら各々5分間、膜を洗浄した。
N末端でヒトアルブミン融合タンパク質コード配列と融合しているコドン最適化された(再コードされた)ヒト短鎖RdCVFをコードする組換えAAVベクターは、ヒト細胞内での融合タンパク質の発現及びヒト細胞からの分泌を媒介することができた。C末端でヒトアルブミン融合タンパク質と融合しているコドン最適化されたヒト短鎖RdCVFをコードする組換えAAVベクターは、ヒト細胞内での融合タンパク質の発現及びヒト細胞からの分泌を媒介することができた。
Claims (20)
- (a)第1のN末端シグナルペプチド配列、前記シグナルペプチド配列のC末端にある第2のペプチド配列、及び前記第2のペプチド配列のC末端にある第3のペプチド配列;又は(b)第2のペプチド配列及び前記第2のペプチド配列のC末端にある第3のペプチド配列;を含む融合タンパク質であって、
前記第1のペプチド配列が、Igkシグナル配列であり、前記第2のペプチド配列がRdCVF-短鎖ペプチド配列であり、前記第3のペプチド配列がヒトアルブミンであり;かつ
配列(配列番号3)又は(配列番号3)のアミノ酸22~732を有する、前記融合タンパク質。 - 請求項1に記載の融合タンパク質をコードする核酸。
- DNAである、請求項2に記載の核酸。
- 配列(配列番号3)を有する融合タンパク質をコードする、請求項2に記載の核酸。
- 配列(配列番号4)を有する、請求項4に記載の核酸。
- 制御配列に作動可能に連結された、請求項2~5のいずれかに記載の核酸を含む発現ベクター。
- 制御配列がプロモーターである、請求項6に記載の発現ベクター。
- プロモーターがCMVプロモーターである、請求項7に記載の発現ベクター。
- ベクターがプラスミドである、請求項6に記載の発現ベクター。
- ベクターがAAV発現プラスミドである、請求項9に記載の発現ベクター。
- ベクターがウイルスベクターである、請求項6に記載の発現ベクター。
- ウイルスベクターが、AAVベクター、レンチウイルスベクター、レトロウイルスベクター、アデノウイルスベクター、及び合成ウイルスベクターからなる群から選択される、請求項11に記載の発現ベクター。
- 請求項2~5のいずれかに記載の核酸又は請求項6~12のいずれかに記載の発現ベクターを含む細胞。
- (i)請求項1に記載の融合タンパク質、請求項2~5のいずれかに記載の核酸、請求項6~12のいずれかに記載の発現ベクター、及び、請求項13に記載の細胞からなる群から選択される成分;及び(ii)薬学的に許容される担体;を含む医薬組成物。
- 哺乳動物患者における状態の治療剤であって、請求項1に記載の融合タンパク質、請求項2~5のいずれかに記載の核酸、請求項6~12のいずれかに記載の発現ベクター、請求項13に記載の細胞、又は請求項14に記載の医薬組成物を含み、投与され、それにより前記患者における前記状態が治療され、
前記状態が、網膜ジストロフィー、シュタルガルト病、色素性網膜炎、萎縮型加齢性黄斑変性症(萎縮型AMD)、地図状萎縮(萎縮型AMDの進行期)、滲出型加齢性黄斑変性症(滲出型AMD)、高眼圧を伴う又は伴わない緑内障、糖尿病性網膜症、バルデ・ビードル症候群、バッセン・コーンツヴァイク症候群、ベスト病、コロイデマ、脳回転状萎縮症、先天性黒内障、レフサン症候群、アッシャー症候群、甲状腺関連眼疾患、グレーブ病、網膜色素上皮細胞に関連する疾患、前眼部疾患、水晶体疾患/白内障、眼杯障害、ブドウ膜炎、アルツハイマー病、ハンチントン病、パーキンソン病、及び嗅覚疾患からなる群から選択される、前記治療剤。 - 状態が眼の状態であり、投与が網膜下注射及び硝子体内注射からなる群から選択される、請求項15に記載の剤。
- 患者における眼の光受容器細胞の保護剤であって、請求項1に記載の融合タンパク質、請求項2~5のいずれかに記載の核酸、請求項6~12のいずれかに記載の発現ベクター、請求項13に記載の細胞、又は請求項14に記載の医薬組成物を含み、投与され、それにより前記患者における前記眼の光受容器細胞を保護する、前記保護剤。
- 投与が、網膜下注射及び硝子体内注射からなる群から選択される、請求項17に記載の剤。
- 患者がヒト患者である、請求項15~18のいずれかに記載の剤。
- 請求項1に記載の融合タンパク質を産生する方法であって、コードされた前記融合タンパク質の発現及び分泌を可能にする条件下で請求項13に記載の細胞を培養するステップであって、前記細胞が発現ベクターを含み、前記発現ベクターが配列(配列番号3)を有する融合タンパク質をコードする核酸を含み、前記核酸が制御配列に作動可能に連結されている、前記ステップ、並びに前記融合タンパク質を前記細胞培養物から単離するステップを含む、前記方法。
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JP2014516358A (ja) | 2011-04-12 | 2014-07-10 | ガンガゲン インコーポレーティッド | キメラ抗菌ポリペプチド |
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FR2823221B1 (fr) | 2001-04-06 | 2004-04-02 | Univ Pasteur | Sequences associees a la degenerescence retinienne et applications |
EP1463752A4 (en) | 2001-12-21 | 2005-07-13 | Human Genome Sciences Inc | ALBUMIN FUSION PROTEINS |
CN1241946C (zh) | 2002-07-01 | 2006-02-15 | 美国福源集团 | 对多种细胞具刺激增生作用的人血清白蛋白重组融合蛋白 |
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US10857240B2 (en) | 2016-01-05 | 2020-12-08 | The Trustees Of The University Of Pennsylvania | Methods and compositions for treatment of ocular disorders and blinding diseases |
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AU2017344059B2 (en) | 2021-12-23 |
KR20230156440A (ko) | 2023-11-14 |
CN109415423A (zh) | 2019-03-01 |
AU2017344059A1 (en) | 2018-12-13 |
BR112018076674A2 (pt) | 2019-04-02 |
RU2018144780A3 (ja) | 2021-02-02 |
EP3526238A4 (en) | 2020-04-29 |
US12076367B2 (en) | 2024-09-03 |
JP2019532616A (ja) | 2019-11-14 |
ZA201808041B (en) | 2019-09-25 |
WO2018071465A1 (en) | 2018-04-19 |
RU2018144780A (ru) | 2020-11-17 |
EP3526238A1 (en) | 2019-08-21 |
US10946063B2 (en) | 2021-03-16 |
CA3025977A1 (en) | 2018-04-19 |
MX2018015596A (es) | 2019-03-14 |
IL263990A (en) | 2019-01-31 |
US20210162005A1 (en) | 2021-06-03 |
US20190151410A1 (en) | 2019-05-23 |
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