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-Structure paper
| タイトル | Functional and epitope specific monoclonal antibody discovery directly from immune sera using cryo-EM. |
|---|---|
| ジャーナル・号・ページ | Sci Adv, Vol. 11, Issue 33, Page eadv8257, Year 2025 |
| 掲載日 | 2025年8月15日 |
著者 | James A Ferguson / Sai Sundar Rajan Raghavan / Garazi Peña Alzua / Disha Bhavsar / Jiachen Huang / Alesandra J Rodriguez / Jonathan L Torres / Maria Bottermann / Julianna Han / Florian Krammer / Facundo D Batista / Andrew B Ward / ![]() |
| PubMed 要旨 | Antibodies are crucial therapeutics, comprising a substantial portion of approved drugs due to their safety and clinical efficacy. Traditional antibody discovery methods are labor-intensive, limiting ...Antibodies are crucial therapeutics, comprising a substantial portion of approved drugs due to their safety and clinical efficacy. Traditional antibody discovery methods are labor-intensive, limiting scalability and high-throughput analysis. Here, we improved upon our streamlined approach combining structural analysis and bioinformatics to infer heavy and light chain sequences from cryo-EM (cryo-electron microscopy) maps of serum-derived polyclonal antibodies (pAbs) bound to antigens. Using ModelAngelo, an automated structure-building tool, we accelerated pAb sequence determination and identified sequence matches in B cell repertoires via ModelAngelo-derived hidden Markov models (HMMs) associated with pAb structures. Benchmarking against results from a nonhuman primate HIV vaccine trial, our pipeline reduced analysis time from weeks to under a day with higher precision. Validation with murine immune sera from influenza vaccination revealed multiple protective antibodies. This workflow enhances antibody discovery, enabling faster, more accurate mapping of polyclonal responses with broad applications in vaccine development and therapeutic antibody discovery. |
リンク | Sci Adv / PubMed:40815640 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.7 - 3.4 Å |
| 構造データ | ![]() EMDB-48118: Map of Neuraminidase active site specific polycloncal antibody from sera of 10 mice vaccinated with Indiana 2011 Group 2 Neuraminidase EMDB-48165, PDB-9md2: EMDB-48166, PDB-9md3: EMDB-48167, PDB-9md4: EMDB-48168, PDB-9md5: EMDB-48169, PDB-9md6: |
| 化合物 | ![]() ChemComp-NAG: ![]() ChemComp-CA: |
| 由来 |
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キーワード | VIRAL PROTEIN/IMMUNE SYSTEM / Polyclonal antibodies / Neuraminidase. Influenza / Cryo-EM / IMMUNE SYSTEM / VIRAL PROTEIN-IMMUNE SYSTEM complex / Neuraminidase / Influenza / Polyclonal antibody |
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Influenza A virus (A/Indiana/10/2011(H3N2)) (A型インフルエンザウイルス)
influenza a virus (A型インフルエンザウイルス)
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