JP2011500514A - 汎発流行性インフルエンザウィルスに対する免疫応答を惹起する方法 - Google Patents
汎発流行性インフルエンザウィルスに対する免疫応答を惹起する方法 Download PDFInfo
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Abstract
Description
(i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとしての、免疫原を含まない免疫刺激複合体、
を含む組成物を対象に投与するステップを含む、対象において汎発流行性亜型のインフルエンザウィルスに対する保護免疫応答を惹起または誘導する方法を提供する。
(i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとしての、免疫原を含まない免疫刺激複合体、
を含む組成物の使用を提供する。
(i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとしての、免疫原を含まない免疫刺激複合体、
を含む組成物の使用を提供する。
(i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとしての、免疫原を含まない免疫刺激複合体
を含む組成物である。
(i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとしての、免疫原を含まない免疫刺激複合体
を含む組成物を対象に投与するステップを含む、対象において汎発流行性亜型のインフルエンザウィルスに対する保護免疫応答を惹起または誘導する方法を提供する。
(i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとして、免疫原を含まない免疫刺激複合体
を含む組成物の使用を提供する。
(i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとして、免疫原を含まない免疫刺激複合体
を含む組成物の使用をさらに提供する。
(i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとして、免疫原を含まない免疫刺激複合体
を含む組成物である。
フェレット:体重およそ700〜1500gの若齢メスまたはオスフェレット(3〜5ヶ月齢)は、IMVS(SA)から供給された。フェレットは目下流行しているインフルエンザ(H1N1、H3N2、Bウイルス)に対して血清反応陰性であった。血液サンプルは、各ワクチン接種直前およびウイルス攻撃前に採取した。攻撃に対する抗体応答をチェックするためのさらなる血液サンプルは、ウイルス曝露の14日後または安楽死の際に採取した。フェレットの大きさに応じて19〜23ゲージの針を使用して、麻酔した(ケタミン/メデトミジン50:50 0.1ml/kg、Apitemazoleで効果を打ち消した)動物において、頚静脈または腋窩静脈で4箇所から各1mlずつ出血させた。10%の体重低下、または例えば振戦や腹部不快感などのその他の臓器系の関与に一致する徴候の表出のどちらかに続いて、臨床的に冒された動物は即座に安楽死させた。
観察:動物は、研究全体を通じて毎日、攻撃に続いて動物が疾患の徴候を見せた場合は日に2回視覚的にモニターした。攻撃前に一般臨床観察を行い、咳嗽またはくしゃみなどのあらゆる呼吸症状について特に記録した。各ワクチン接種に続いて2、24、および48時間後に、反応部位の観察(すなわち紅斑、浮腫)を記録した。攻撃に続いて活動スコアを毎日モニターした。
インフルエンザISCOMATRIXTMワクチン:抗体応答
フェレットの免疫原性および攻撃研究開始前にフェレットから血清を採取して、A/New Caledonia/20/1999(H1N1)、A/Wisconsin/67/2005(H3N2)、およびB/Malaysia/2506/2004に対する抗体の存在について、標準の方法を使用して酵素結合免疫測定法(ELISA)によって試験した。試験された全てのフェレットは、全ての3株に対する抗体について陰性であり、したがってインフルエンザに未感作と見なされた。
2回目のワクチン投与の4週間後に、Govorkovaら[24]によって述べられているように、フェレットの鼻腔内(両方の鼻孔)に106・50%の鶏卵感染量(EID50)の攻撃ウイルス(A/Vietnam/1203/2004)を接種した。次にフェレットを体温について連続的に、体重、外観および罹患については毎日、モニターした。
研究中になされた重要かつ驚くべき観察は、ISCOMATRIXTMアジュバントと組み合わされたA/New Caledonia/20/1999(H1N1)、A/Wisconsin/67/2005(H3N2)、およびB/Malaysia/2506/2004のそれぞれから15μgのHAを含有するインフルエンザISCOMATRIXTMワクチンが、A/Vietnam/1203/2004に対する検出可能な中和抗体応答(HIおよびVN)の不在下で、高病原性H5N1ウイルス(A/Vietnam/1203/2004)による致死的攻撃からフェレットを保護したことである。インフルエンザISCOMATRIXTMワクチン群中のフェレットの体温の一過性上昇は、攻撃に続いてこれらの動物が感染したが、ウイルス感染の程度は中和抗体非媒介性の免疫学的機序によって制限され、迅速なウイルス排除と感染からの回復がもたらされることを示唆する。
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Claims (10)
- (i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとして、免疫原を含まない免疫刺激複合体
を含む組成物を対象に投与するステップを含む、対象において汎発流行性亜型のインフルエンザウィルスに対する保護免疫応答を惹起または誘導する方法。 - 対象がヒトである、請求項1に記載の方法。
- 組成物が地域流行性インフルエンザA H1N1および/またはH3N2亜型の免疫原を含む、請求項1または請求項2に記載の方法。
- 免疫原を含まない免疫刺激複合体が、サポニン、ステロール、および任意にリン脂質を含む、請求項1〜3のいずれか一項に記載の方法。
- 免疫原を含まない免疫刺激複合体が、ISCOMATRIXTMアジュバントを含む、請求項4に記載の方法。
- 汎発流行性亜型インフルエンザウィルスが、インフルエンザA H5N1、H7N7、H7N3、H9N2、およびH10N7亜型から選択される、請求項1〜5のいずれか一項に記載の方法。
- 前記汎発流行性亜型がインフルエンザA H5N1亜型である、請求項6に記載の方法。
- 汎発流行性亜型のインフルエンザウィルスに対する保護免疫応答を惹起または誘導するために対象に投与するための薬剤の製造における、
(i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとして、免疫原を含まない免疫刺激複合体
を含む組成物の使用。 - 汎発流行性亜型インフルエンザウィルスに対する保護免疫応答を惹起または誘導するための
(i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとして、免疫原を含まない免疫刺激複合体
を含む組成物の使用。 - (i)地域流行性インフルエンザ亜型の免疫原の少なくとも1つ、および
(ii)アジュバントとして、免疫原を含まない免疫刺激複合体
を含む組成物である、対象において汎発流行性亜型のインフルエンザウィルスに対する保護免疫応答を惹起または誘導するための薬剤。
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BRPI0609772A2 (pt) | composição imunogênica multivalente de influenza, método para a produção de uma composição imunogência de influenza para uma situação pandêmica, e, usos de um vìrus de influenza ou preparação antigênica do mesmo e um adjuvante de emulsão óleo-em-água, e de um antìgeno ou preparação antigênica de uma primeira cepa de influenza |
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