肝炎B核タンパク質との融合後のペプチドエピトープの免疫性向上
B E Clarke1, S E Newton, A R Carroll
1FMD Division, Wellcome Biotechnology Ltd, Beckenham, Kent, UK.
Nature
|November 2, 1987
まとめ
ウイルスタンパク質の断片を用いた合成ワクチンは有望である. B型肝炎のコア抗原のエピトープを提示する新しいシステムは,FMDVの全粒子の免疫性と比較できる免疫性を達成しました.
科学分野:
- ウイルス学 ウイルス学 ウイルス学
- 免疫学 免疫学とは
- ワクチン開発 ワクチン開発
背景:
- * 合成ワクチンは,特定のウイルスタンパク質領域 (エピトープ) を免疫原体として利用することができる.
- * 足口病ウイルス (FMDV) VP1タンパク質からのペプチド配列 (141-160) は,中和抗体を誘発することができます.
- *以前,ペプチドを単体またはβ-ギャラクソシダゼと融合したものを用いた試みは,ウイルス全体と比較して,限られた免疫原性を示した.
研究 の 目的:
- *強力な合成ワクチンを作るための発現システムを開発する.
- * ウイルスのような複合体を使用して,高密度で免疫原性エピトープを提示する.
- * ウイルスペプチドエピトープの免疫原性を高めるために.
主な方法:
- * 免疫原性エピトープをキャリアタンパク質と結びつける発現システムの構築.
- * B型肝炎のコア抗原をキャリアタンパク質として利用し,ウイルスのような複合体を形成する.
- *これらの新しい構造の免疫原性の評価.
主要な成果:
- * 開発された表現システムは,高密度でエピトープを成功裏に提示しました.
- * 設計されたウイルスのような複合体の免疫性は,ネイティブのFMDV粒子の免疫性に近づいた.
- *このアプローチは,以前のペプチドベースの方法と比較して,免疫反応を大幅に改善しました.
結論:
- * 新型ウイルスのような粒子のシステムは,ウイルスのエピトープを効果的に提示します.
- * このシステムは,合成ペプチドワクチンの免疫原性を高めます.
- *このアプローチは,次世代のウイルスワクチン開発の可能性を示しています.
関連する概念動画
Cell-mediated Immune Responses
Overview
Antigens Involved in Adaptive Immunity
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Cytotoxic T Cells-mediated Immune Response
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
B Cell Activation and Differentiation
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
Immune Response Against Viral Pathogens
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Tumor Immunotherapy
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.


