JP7430011B2 - 動物の中性化用組換えタンパク質およびこれを含むワクチン組成物 - Google Patents
動物の中性化用組換えタンパク質およびこれを含むワクチン組成物 Download PDFInfo
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Description
実施例1:BiP-CTB-GnRH-pFc2-HDEL融合タンパク質の発現および精製
GnRHに対する免疫原性を誘導するために、図1に示されたように、GnRHにCTB、pFc2、BiPおよびHDELを融合した組み換えGnRHを発現させるためのベクターを製作した。10個のアミノ酸から構成されたGnRHは、6個が連続するようにしてアラニン-グリシン-アラニン(AGA)リンカーで連結した。6個が連結されたGnRHのアミノ酸配列および塩基配列は、それぞれ、配列番号2および配列番号3に示した。また、CTBに対するアミノ酸配列および塩基配列は、それぞれ、配列番号4および配列番号5に、pFc2に対するアミノ酸配列および塩基配列は、それぞれ、配列番号6および配列番号7に、BiPに対するアミノ酸配列および塩基配列は、それぞれ、配列番号8および配列番号9に、HDELに対するアミノ酸配列および塩基配列は、それぞれ、配列番号10および配列番号11に示し、発現カセット(cassette)の全体アミノ酸配列および塩基配列は、それぞれ、配列番号12および配列番号13に示した。
前記実施例1で分離・精製した組み換えGnRHタンパク質の濃度を確認および測定するために、濃度を知っているBSA(bovine serum albumin)をスタンダード(standard)としてSDS-PAGEを行った。分離精製した組み換えGnRHタンパク質を1、2μlローディングし、定量のために0.5、1、2μgのBSAを含ませた。Gelは、クマシーブルー染色(Coomassie blue staining)を通じてバンドを最終的に確認した。
3.1.実験動物、投与条件および日程
組み換えGnRHタンパク質の中性化効果を確認するために、4週齢の雄性SD(Sprague Dawley)ラットに下記表1に記載された投与条件で、図3に示された日程によって本発明による組み換えGnRHタンパク質が含まれたワクチン組成物を投与した。対照群は、同量のPBS(phosphate-buffered saline)を投与し、実験群は、前記ワクチン組成物100μg/180μlおよびEmulsigen(登録商標)-Dアジュバント20μlを投与した(下記表1参照)。入舎した4週齢のラットを約4日間安定化させた後、14日~15日の投与間隔で総3回投与した。採血は、それぞれ、投与前および実験終了時に実施し、3次投与後4週が経過した時点で睾丸を摘出して、重量およびサイズを測定し、血中テストステロン(testosterone)の濃度を測定した。
本発明によるワクチン組成物の3次投与後に4週が経過した時点で睾丸を摘出して、目視評価を実施した。結果は、下記表2および図4に示した。
本発明によるワクチン組成物の3次投与後に4週が経過した時点で採血して、血中テストステロンの濃度を測定した。測定は、Elabscience(登録商標)のELISAキットを用いて製造社の指針によって行った。具体的に、テストステロンがコートされているプレートに50μLの血清を入れ、すぐに同量のbiotinylated Detection抗体を入れた。37℃で45分間反応させた後、350μLの洗浄バッファーを用いて3回洗浄した。次に、100μLのHRP conjugate溶液を入れ、37℃で30分間培養した。上述した過程と同一に洗浄を5回進めた後、90μLの基質液を添加した後、37℃で15分間培養した。その後、50μLの反応停止液を入れ、ELISA機械を通じて450nmの波長でOD値を測定した。血中テストステロンの実際量を定量するために、テストステロンスタンダードタンパク質を0.1、0.4、1.6、5、20ng/mlで含んで反応を進めた。これを通じて得られたOD値でスタンダードグラフを作成し、これに上記で得られたサンプルのOD値を代入してテストステロンを定量した。その結果は、下記表3および図5に示した。
4.1.実験動物、投与条件および日程
組換えGnRHタンパク質の中性化効果を確認するために、4週齢の雌性SD(Sprague Dawley)ラットに下記表5に記載された投与条件で、図7に示した日程によって本発明による組換えGnRHタンパク質が含まれたワクチン組成物を投与した。対照群は、同量のPBS(phosphate-buffered saline)を投与し、比較群としてCTBの代わりにFeが融合したGnRHタンパク質が含まれたワクチン組成物100μg/180μlおよびEmulsigen(登録商標)-Dアジュバント20μlを投与した。実験群は、本発明によるワクチン組成物100μg/180μlおよびEmulsigen(登録商標)-Dアジュバント20μlを投与した(下記表5参照)。ワクチンは、4週齢のラットにそれぞれ14日および7日の投与間隔で総3回投与した。採血は、それぞれの投与前および実験終了時に施行し、3次投与後3週が経過した時点で卵巣を摘出して重量およびサイズを測定し、血中プロゲストロン(progesterone)およびエストラジオール(estradiol)の濃度を測定した。
本発明による中性化ワクチンによりGnRHに対する抗体が生成されたか否かを確認するために、96-wellプレートにGnRH抗原をそれぞれ50および25ng/wellでコートした。対照群としては、同量のPBSを注入したマウスから得られた血清を使用した。
本発明によるワクチン組成物の3次投与後、3週が経過した時点で卵巣を摘出して、目視評価を実施した。結果は、下記表7および図9に示した。
Claims (17)
- CTB(Cholera toxin B subunit)、n個のGnRH(Gonadotropin-releasing hormone)および豚のFc断片(porcine Fc fragment;pFc2)が融合した組み換えタンパク質を有効成分として含み、
前記CTBは、GnRHのN末端方向に融合し、pFc2は、GnRHのC末端方向に融合し、及び、
前記nは、1~20の整数である、動物の中性化ワクチン組成物。 - 前記GnRHは、配列番号1のアミノ酸配列からなることを特徴とする、請求項1に記載のワクチン組成物。
- 前記CTBは、配列番号4のアミノ酸配列からなることを特徴とする、請求項1又は2に記載のワクチン組成物。
- 前記nは、6であることを特徴とする、請求項1~3のいずれか1項に記載のワクチン組成物。
- 前記GnRHは、配列番号2のアミノ酸配列からなることを特徴とする、請求項4に記載のワクチン組成物。
- 前記GnRHは、nが2以上であるとき、それぞれ、アラニン-グリシン-アラニン(alanine-glycine-alanine)リンカーで連結されたことを特徴とする、請求項1~5のいずれか1項に記載のワクチン組成物。
- 前記組み換えタンパク質において、シャペロン結合タンパク質(chaperone binding protein;BiP)、及び/又はHDEL(His-Asp-Glu-Leu)がさらに融合し、および、BiP、CTB、GnRH、pFc2、およびHDELが順次融合されることを特徴とする、請求項1~6のいずれか1項に記載のワクチン組成物。
- 前記BiPは、配列番号8のアミノ酸配列からなり、及び/又は
前記HDELは、配列番号11の塩基配列によってコードされることを特徴とする、請求項7に記載のワクチン組成物。 - 前記pFc2は、配列番号6のアミノ酸配列からなる、請求項1に記載のワクチン組成物。
- 前記組み換えタンパク質は、配列番号12のアミノ酸配列からなることを特徴とする、請求項1~9のいずれか1項に記載のワクチン組成物。
- 前記ワクチン組成物は、アジュバント(adjuvant)をさらに含むことを特徴とする、請求項1~9のいずれか1項に記載のワクチン組成物。
- 前記アジュバントは、エマルシゲン(Emulsigen)系であることを特徴とする、請求項11に記載のワクチン組成物。
- 請求項1~12のいずれか一項に記載のワクチン組成物をヒトを除いた動物に投与する段階を含む、動物の中性化方法。
- 配列番号5のアミノ酸配列からなるCTB遺伝子、
配列番号3の塩基配列からなるGnRH遺伝子、及び、
配列番号6のアミノ酸配列からなる豚のFc断片(porcine Fc fragment;pFc2)をコードするポリヌクレオチドを含むことを特徴とする、動物の中性化用組み換えベクター。 - CTB(Cholera toxin B subunit)、n個のGnRH(Gonadotropin-releasing hormone)およびブタFcフラグメント(pFc2)が融合した、動物の中性化用組み換えタンパク質であって、
前記CTBは、GnRHのN末端方向に融合し、pFc2は、GnRHのC末端方向に融合し、及び、
前記nは、1~20の整数である組換えタンパク質。 - 請求項14に記載の組み換えベクターで形質転換された、形質転換体。
- CTB(Cholera toxin B subunit)、n個のGnRH(Gonadotropin-releasing hormone)および豚のFc断片(porcine Fc fragment;pFc2)が融合し、
前記CTBは、GnRHのN末端方向に融合し、pFc2は、GnRHのC末端方向に融合し、及び、
前記nは、1~20の整数である組換えタンパク質の、動物中性化に用いられるワクチンを製造するための使用。
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KR101080015B1 (ko) * | 2008-02-14 | 2011-11-04 | 주식회사 고려비엔피 | CTLA-4-GnRH 또는 GM-CSF-GnRH 재조합 단백질을 유효성분으로 함유하는 동물의 면역거세용 백신 |
KR101298215B1 (ko) * | 2011-02-18 | 2013-08-22 | 건국대학교 산학협력단 | STF2-GnRH 융합 재조합 단백질, 이를 코딩하는 유전자, 이 유전자를 포함하는 재조합 벡터, 이 벡터로 형질전환된 형질전환체 및 이를 이용한 융합 재조합 단백질의 제조방법 |
KR101217269B1 (ko) * | 2011-02-18 | 2012-12-31 | 건국대학교 산학협력단 | STF2-GnRH 융합 재조합 단백질을 포함하는 면역 거세용 백신 조성물 및 이를 이용한 동물의 면역 거세 방법 |
CN102151332A (zh) * | 2011-03-22 | 2011-08-17 | 中国药科大学 | 一种幽门螺旋杆菌表位疫苗及其设计、制备方法和应用 |
CN105176897A (zh) * | 2015-07-29 | 2015-12-23 | 中国药科大学 | 一种表达GnRH/M2融合多肽的重组工程菌株及其构建和应用 |
JP7161729B2 (ja) * | 2017-02-28 | 2022-10-27 | 一般財団法人阪大微生物病研究会 | 多価ワクチン |
KR102280493B1 (ko) * | 2017-05-29 | 2021-07-21 | 건국대학교 산학협력단 | GnRH가 삽입된 STF2 재조합 단백질 및 이의 용도 |
KR20200035898A (ko) | 2018-09-27 | 2020-04-06 | 주식회사 엘지화학 | 항균 코팅제가 처리된 기재 및 이의 제조방법 |
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US20230218729A1 (en) | 2023-07-13 |
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CN115066256A (zh) | 2022-09-16 |
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JP2023511458A (ja) | 2023-03-17 |
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