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-Structure paper
タイトル | Structural and functional characterization of nanobodies that neutralize Omicron variants of SARS-CoV-2. |
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ジャーナル・号・ページ | Open Biol, Vol. 14, Issue 6, Page 230252, Year 2024 |
掲載日 | 2024年6月4日 |
著者 | Katy Cornish / Jiandong Huo / Luke Jones / Parul Sharma / Joseph W Thrush / Sahar Abdelkarim / Anja Kipar / Siva Ramadurai / Miriam Weckener / Halina Mikolajek / Sai Liu / Imogen Buckle / Eleanor Bentley / Adam Kirby / Ximeng Han / Stephen M Laidlaw / Michelle Hill / Lauren Eyssen / Chelsea Norman / Audrey Le Bas / John Clarke / William James / James P Stewart / Miles Carroll / James H Naismith / Raymond J Owens / |
PubMed 要旨 | The Omicron strains of SARS-CoV-2 pose a significant challenge to the development of effective antibody-based treatments as immune evasion has compromised most available immune therapeutics. ...The Omicron strains of SARS-CoV-2 pose a significant challenge to the development of effective antibody-based treatments as immune evasion has compromised most available immune therapeutics. Therefore, in the 'arms race' with the virus, there is a continuing need to identify new biologics for the prevention or treatment of SARS-CoV-2 infections. Here, we report the isolation of nanobodies that bind to the Omicron BA.1 spike protein by screening nanobody phage display libraries previously generated from llamas immunized with either the Wuhan or Beta spike proteins. The structure and binding properties of three of these nanobodies (A8, H6 and B5-5) have been characterized in detail providing insight into their binding epitopes on the Omicron spike protein. Trimeric versions of H6 and B5-5 neutralized the SARS-CoV-2 variant of concern BA.5 both and in the hamster model of COVID-19 following nasal administration. Thus, either alone or in combination could serve as starting points for the development of new anti-viral immunotherapeutics. |
リンク | Open Biol / PubMed:38835241 / PubMed Central |
手法 | EM (単粒子) / X線回折 |
解像度 | 1.73 - 4.0 Å |
構造データ | EMDB-17295, PDB-8oyt: EMDB-17296, PDB-8oyu: PDB-8owt: PDB-8owv: PDB-8oww: |
化合物 | ChemComp-NAG: ChemComp-MES: ChemComp-HOH: ChemComp-GOL: ChemComp-EDO: ChemComp-NO3: |
由来 |
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キーワード | VIRAL PROTEIN / Nanobody / Complex / Receptor binding domain / SARS-CoV-2 / spike |