+検索条件
-Structure paper
| タイトル | A rare B cell clonotype imprinted by ancestral SARS-CoV-2 develops cross-sarbecovirus neutralization in immune recalls. |
|---|---|
| ジャーナル・号・ページ | Cell Rep, Vol. 44, Issue 7, Page 115964, Year 2025 |
| 掲載日 | 2025年7月4日 |
著者 | Xixian Chen / Ling Li / Ruiping Du / Zuowei Wang / Yunjian Li / Yi Sun / Rongrong Qin / Hualong Feng / Lin Hu / Xuanyi Chen / Maosheng Lu / Xueyan Huang / Haibo Wang / Liwei Jiang / Teng Zuo / ![]() |
| PubMed 要旨 | The ultimate potential of B cells imprinted by ancestral SARS-CoV-2 in developing neutralizing breadth and potency remains to be explored. Here, we longitudinally tracked B cells that recognize the ...The ultimate potential of B cells imprinted by ancestral SARS-CoV-2 in developing neutralizing breadth and potency remains to be explored. Here, we longitudinally tracked B cells that recognize the wild-type spike in two individuals who were repeatedly infected by Omicron variants after receiving prototype mRNA vaccines. Functional and genetic analysis of 632 monoclonal antibodies (mAbs) from those B cells reveals that mAbs cloned after a second infection have dramatically enhanced neutralizing breadth and potency due to immune recalls. Among the eleven mAbs that broadly neutralize SARS-CoV-2 variants from the wild type to KP.3, five mAbs are classified into public clonotypes encoded by IGHV3-53 or IGHV3-66, whereas the rest belong to a rare clonotype encoded by IGHV3-74. Notably, IGHV3-74 mAbs can also potently neutralize other sarbecoviruses by targeting a non-dominant epitope partially overlapping with receptor-binding domain (RBD)-3 and RBD-5. These results support that ancestral SARS-CoV-2 immune imprinting can be harnessed in developing pan-SARS-CoV-2 and even cross-sarbecovirus vaccines. |
リンク | Cell Rep / PubMed:40616841 |
| 手法 | EM (単粒子) |
| 解像度 | 3.03 - 3.17 Å |
| 構造データ | EMDB-64581, PDB-9uxd: EMDB-64582, PDB-9uxe: |
| 化合物 | ![]() ChemComp-NAG: |
| 由来 |
|
キーワード | VIRAL PROTEIN/IMMUNE SYSTEM / spike / antibody / VIRAL PROTEIN-IMMUNE SYSTEM complex |
ムービー
コントローラー
構造ビューア
万見文献について



著者
リンク




homo sapiens (ヒト)
キーワード