JP6596008B2 - 液体安定なブタウイルスワクチン - Google Patents
液体安定なブタウイルスワクチン Download PDFInfo
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Description
本出願は、2014年2月19日付け出願の米国仮特許出願第61/941,720号(その内容の全体を参照により本明細書に組み入れることとする)の、35 U.S.C.§119(e)に基づく優先権を主張するものである。
本発明は、生ブタウイルスを含む液体安定ブタワクチンに関する。本発明はまた、かかるワクチンの製造および動物対象にワクチン接種する方法に関する。
現在のワクチンの欠点を克服するべく、本発明は新規液体安定生ブタウイルスワクチンおよびそれらの対応免疫原性組成物を提供する。本発明の液体安定生ブタウイルスワクチンは、長期間、例えば6、7、9カ月またはそれ以上(例えば、約1〜3年)にわたって有効であり続けることが可能である。本発明はまた、そのようなワクチンをブタに投与する方法を提供する。本発明は更に、本発明のワクチンを投与することにより動物、例えばブタにおける疾患を予防する方法を提供する。
本発明の液体安定ブタウイルスワクチンは生ウイルス、例えば生弱毒化ウイルスを含むため、従来であれば、該ワクチンの製剤化中に、有意な有害事象を招きうるレベルを安全に下回るレベルに弱毒化ウイルスの力価を維持するために、格別の注意が必要とされたであろう。実際、ほとんどの生弱毒化ブタウイルスワクチンは凍結乾燥され、凍結乾燥プロセス自体と長期貯蔵中の経時的影響との両方により、凍結乾燥は弱毒化生ウイルスワクチンの効力における相当な低下を招きうる。
液体ブタウイルスワクチンの安定性
材料および方法
バルク抗原の製造:凍結バルクPRRSウイルス抗原を得て、ワクチンを混合する時まで−50℃未満に維持した。該PRRSバルク抗原は約9のlog log10(EID50)の力価を有する。
PRRSv力価測定アッセイ:PRRSvを含有する試験サンプルの感染性を感受性組織培養細胞、好ましくはアフリカミドリザル腎細胞系、例えばMARC145またはMA104上の力価測定により決定する。該アッセイの3〜4日前に、細胞を適当な培養プレートまたはディッシュ、例えば96ウェル組織培養プレート内に播く。
以下の表2Bは、本発明のブタウイルスワクチンの、10個の液体安定製剤を示す。製剤11は、生ブタウイルスワクチンを安定化するために従来用いられた凍結乾燥法を考慮して設計されたトリプトン,ラクトース製剤である。27℃で行った加速試験においては、標準的な凍結乾燥製剤(製剤11)は直ちに劣化し始めた。以下の表3を参照されたい。2℃〜7℃における対応リアルタイム安定性研究においては、該製剤の全ての力価は製剤2に匹敵した(以下の表2Bを参照されたい)。この製剤の、10個の変異体の全ての力価は、少なくとも6カ月間(測定した最終時点)、2℃〜7℃で比較的安定なままのようである。全く対照的に、製剤11の力価は、この6カ月の時点で、測定可能な程度に減少しており、その力価において1.5 log近く低下している。以下の表4を参照されたい。
Claims (14)
- 生弱毒化ブタ生殖器呼吸器症候群ウイルス(PRRS)と、10〜30%(w/v)の糖アルコールと、アルギニン、グルタミン酸およびグリシンからなる群から選択される0.15〜0.75Mのアミノ酸とを含む液体安定ワクチンであって、
pHが6.0〜8.0である、液体安定ワクチン。 - 前記糖アルコールがソルビトールである、請求項1記載の液体安定ワクチン。
- 前記アミノ酸がアルギニンである、請求項1または2記載の液体安定ワクチン。
- 非アルコール糖である糖添加物を更に含み、
液体安定ワクチン中の前記糖アルコールと前記非アルコール糖との総量が15〜40%(w/v)である、請求項1〜3のいずれかに記載の液体安定ワクチン。 - 前記非アルコール糖が、スクロースおよびトレハロースからなる群から選択される、請求項4に記載の液体安定ワクチン。
- バッファーを更に含む、請求項1〜5のいずれかに記載の液体安定ワクチン。
- 死滅ブタウイルスを更に含む、請求項1〜6のいずれかに記載の液体安定ワクチン。
- 細菌を更に含む、請求項1〜7のいずれかに記載の液体安定ワクチン。
- 前記細菌が、生弱毒化パスツレラ・マルトシダ(Pasteurella multocida)、生弱毒化サルモネラ属種(Salmonella ssp.)、生弱毒化マンヘミア・ヘモリチカ(Mannheimia haemolytica)、生弱毒化クロストリジウム・パーフリンジェンス(Clostridium perfringens)、生弱毒化ローソニア・イントラセルラーリス(Lawsonia intracellularis)、生弱毒化マイコプラズマ・ヒオニューモニエ(Mycoplasma hyopneumoniae)、生弱毒化エリシペラス属種(Erysipelas ssp.)およびそれらのいずれかの組合せからなる群から選択される、請求項8記載の液体安定ワクチン。
- 10〜20%(w/v)の糖アルコールと5〜15%(w/v)の非アルコール糖とを含む、請求項1〜9のいずれか記載の液体安定ワクチン。
- 請求項1〜10のいずれかに記載の液体安定ワクチン0.2〜2.0mLをブタに投与することを含む、ブタ生殖器呼吸器症候群ウイルス(PRRS)からブタを保護することを補助する方法。
- 経口、注射または鼻腔内経路により前記投与を行う、請求項11記載の方法。
- 前記注射経路が、皮下、筋肉内および皮内からなる群より選択される、請求項12記載の方法。
- 治療的有効量の生弱毒化ブタウイルスを、10〜30%(w/v)糖アルコールと、アルギニン、グルタミン酸およびグリシンからなる群より選択される0.15〜0.75Mのアミノ酸と組み合わせることを含む、pH6.0〜8.0の、請求項1〜10のいずれか記載の液体安定ワクチンの製造方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201461941720P | 2014-02-19 | 2014-02-19 | |
| US61/941,720 | 2014-02-19 | ||
| PCT/EP2015/053364 WO2015124594A1 (en) | 2014-02-19 | 2015-02-18 | Swine virus vaccines that are liquid stable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2017506643A JP2017506643A (ja) | 2017-03-09 |
| JP6596008B2 true JP6596008B2 (ja) | 2019-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016552582A Active JP6596008B2 (ja) | 2014-02-19 | 2015-02-18 | 液体安定なブタウイルスワクチン |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US9855336B2 (ja) |
| EP (1) | EP3107572B1 (ja) |
| JP (1) | JP6596008B2 (ja) |
| CN (1) | CN106061503B (ja) |
| BR (1) | BR112016018871B1 (ja) |
| ES (1) | ES2793942T3 (ja) |
| RU (1) | RU2695523C2 (ja) |
| TW (1) | TWI670085B (ja) |
| WO (1) | WO2015124594A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9314519B2 (en) | 2012-08-21 | 2016-04-19 | Intervet Inc. | Liquid stable virus vaccines |
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| WO2015124594A1 (en) | 2015-08-27 |
| CN106061503B (zh) | 2020-06-16 |
| TW201613556A (en) | 2016-04-16 |
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