An Ultralong Bovine CDRH3 that Targets a Conserved, Cryptic Epitope on SARS-CoV and SARS-CoV-2
An Ultralong Bovine CDRH3 that Targets a Conserved, Cryptic Epitope on SARS-CoV and SARS-CoV-2
复制标题
一种针对 SARS-CoV 和 SARS-CoV-2 上保守、隐蔽表位的超长牛 CDRH3
DOI:
10.1101/2022.04.06.487306
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Burke M
中科院分区:
文献类型:
--
作者:
Burke M
The ability of broadly neutralising antibodies to target conserved epitopes gives them huge potential as antibody-based therapeutics, particularly in the face of constant viral antigen evolution. Certain bovine antibodies are highly adept at binding conserved, glycosylated epitopes, courtesy of their ultralong complementarity determining region (CDR)H3. Here, we used a SARS-naïve, bovine ultralong CDRH3 library and mammalian cell display, to isolate a bovine paratope that engages the SARS-CoV and SARS-CoV-2 receptor-binding domain (RBD). This neutralises viruses pseudo-typed with SARS-CoV Spike protein but not by competition with RBD binding to ACE2. Instead, using differential hydrogen-deuterium exchange mass spectrometry and site-directed mutagenesis, we demonstrate that this ultralong CDRH3 recognises a rarely identified, conserved, cryptic epitope that overlaps the target of pan-sarbecovirus antibodies (7D6/6D6). The epitope is glycan-shielded and becomes accessible only transiently via inter-domain movements. This represents the first bovine anti-sarbecovirus paratope and highlights the power of this approach in identifying novel tools to combat emerging pathogens.
登录
查看更多内容
DOI:
10.1056/nejmoa2034577
发表时间:
2020-12-31
期刊:
The New England journal of medicine
影响因子:
--
作者:
Polack FP;Thomas SJ;Kitchin N;Absalon J;Gurtman A;Lockhart S;Perez JL;Pérez Marc G;Moreira ED;Zerbini C;Bailey R;Swanson KA;Roychoudhury S;Koury K;Li P;Kalina WV;Cooper D;Frenck RW Jr;Hammitt LL;Türeci Ö;Nell H;Schaefer A;Ünal S;Tresnan DB;Mather S;Dormitzer PR;Şahin U;Jansen KU;Gruber WC;C4591001 Clinical Trial Group
通讯作者:
C4591001 Clinical Trial Group
DOI:
10.1056/nejmoa2035389
发表时间:
2021-02-04
期刊:
The New England journal of medicine
影响因子:
--
作者:
Baden LR;El Sahly HM;Essink B;Kotloff K;Frey S;Novak R;Diemert D;Spector SA;Rouphael N;Creech CB;McGettigan J;Khetan S;Segall N;Solis J;Brosz A;Fierro C;Schwartz H;Neuzil K;Corey L;Gilbert P;Janes H;Follmann D;Marovich M;Mascola J;Polakowski L;Ledgerwood J;Graham BS;Bennett H;Pajon R;Knightly C;Leav B;Deng W;Zhou H;Han S;Ivarsson M;Miller J;Zaks T;COVE Study Group
通讯作者:
COVE Study Group
DOI:
10.1016/j.jbc.2022.101772
发表时间:
2022-04
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Sarker A;Rathore AS;Khalid MF;Gupta RD
通讯作者:
Gupta RD
影响因子:
4.4
作者:
Saini, SS;Farrugia, W;Kaushik, AK
通讯作者:
Kaushik, AK
DOI:
10.1093/protein/gzg093
发表时间:
2003-10-01
期刊:
PROTEIN ENGINEERING
影响因子:
--
作者:
Yang, K;Basu, A;Filpula, D
通讯作者:
Filpula, D