+検索条件
-Structure paper
| タイトル | Vaccine design via antigen reorientation. |
|---|---|
| ジャーナル・号・ページ | Nat Chem Biol, Vol. 20, Issue 8, Page 1012-1021, Year 2024 |
| 掲載日 | 2024年1月15日 |
著者 | Duo Xu / Joshua J Carter / Chunfeng Li / Ashley Utz / Payton A B Weidenbacher / Shaogeng Tang / Mrinmoy Sanyal / Bali Pulendran / Christopher O Barnes / Peter S Kim / ![]() |
| PubMed 要旨 | A major challenge in creating universal influenza vaccines is to focus immune responses away from the immunodominant, variable head region of hemagglutinin (HA-head) and toward the evolutionarily ...A major challenge in creating universal influenza vaccines is to focus immune responses away from the immunodominant, variable head region of hemagglutinin (HA-head) and toward the evolutionarily conserved stem region (HA-stem). Here we introduce an approach to control antigen orientation via site-specific insertion of aspartate residues that facilitates antigen binding to alum. We demonstrate the generalizability of this approach with antigens from Ebola, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and influenza viruses and observe enhanced neutralizing antibody responses in all cases. We then reorient an H2 HA in an 'upside-down' configuration to increase the exposure and immunogenicity of HA-stem. The reoriented H2 HA (reoH2HA) on alum induced stem-directed antibodies that cross-react with both group 1 and group 2 influenza A subtypes. Electron microscopy polyclonal epitope mapping (EMPEM) revealed that reoH2HA (group 1) elicits cross-reactive antibodies targeting group 2 HA-stems. Our results highlight antigen reorientation as a generalizable approach for designing epitope-focused vaccines. |
リンク | Nat Chem Biol / PubMed:38225471 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 15.1 - 24.7 Å |
| 構造データ | ![]() EMDB-42044: H2HA A/Japan/305/1957 complexed with mouse polyclonal Fab - wk 12, reoriented immunogen ![]() EMDB-42045: H2HA A/Japan/305/1957 complexed with mouse polyclonal Fab - wk 12, control immunogen ![]() EMDB-42046: H7N9 A/Shanghai/2/2013 complexed with mouse polyclonal Fab - wk 12, control immunogen ![]() EMDB-42048: H3N2 A/Victoria/3/1975 complexed with mouse polyclonal Fab - wk 7, control immunogen ![]() EMDB-42052: H3N2 A/Victoria/3/1975 complexed with mouse polyclonal Fab - wk 7, reoH2HA immunogen ![]() EMDB-42056: H7N9 A/Shanghai/2/2013 complexed with mouse polyclonal Fab - wk 7, reoriented immunogen ![]() EMDB-42058: H7N9 A/Shanghai/2/2013 complexed with mouse polyclonal Fab - wk 7, control immunogen ![]() EMDB-42059: H7N9 A/Shanghai/2/2013 complexed with mouse polyclonal Fab - wk 7, reoriented immunogen |
| 由来 |
|
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







Influenza A virus (A/Japan/305/1957(H2N2)) (A型インフルエンザウイルス)
