|Title||Slow Delivery Immunization Enhances HIV Neutralizing Antibody and Germinal Center Responses via Modulation of Immunodominance.|
|Journal, issue, pages||Cell, Vol. 177, Issue 5, Page 1153-1171.e28, Year 2019|
|Publish date||May 16, 2019|
|Authors||Kimberly M Cirelli / Diane G Carnathan / Bartek Nogal / Jacob T Martin / Oscar L Rodriguez / Amit A Upadhyay / Chiamaka A Enemuo / Etse H Gebru / Yury Choe / Federico Viviano / Catherine Nakao / Matthias G Pauthner / Samantha Reiss / Christopher A Cottrell / Melissa L Smith / Raiza Bastidas / William Gibson / Amber N Wolabaugh / Mariane B Melo / Benjamin Cossette / Venkatesh Kumar / Nirav B Patel / Talar Tokatlian / Sergey Menis / Daniel W Kulp / Dennis R Burton / Ben Murrell / William R Schief / Steven E Bosinger / Andrew B Ward / Corey T Watson / Guido Silvestri / Darrell J Irvine / Shane Crotty /|
|PubMed Abstract||Conventional immunization strategies will likely be insufficient for the development of a broadly neutralizing antibody (bnAb) vaccine for HIV or other difficult pathogens because of the ...Conventional immunization strategies will likely be insufficient for the development of a broadly neutralizing antibody (bnAb) vaccine for HIV or other difficult pathogens because of the immunological hurdles posed, including B cell immunodominance and germinal center (GC) quantity and quality. We found that two independent methods of slow delivery immunization of rhesus monkeys (RMs) resulted in more robust T follicular helper (T) cell responses and GC B cells with improved Env-binding, tracked by longitudinal fine needle aspirates. Improved GCs correlated with the development of >20-fold higher titers of autologous nAbs. Using a new RM genomic immunoglobulin locus reference, we identified differential IgV gene use between immunization modalities. Ab mapping demonstrated targeting of immunodominant non-neutralizing epitopes by conventional bolus-immunized animals, whereas slow delivery-immunized animals targeted a more diverse set of epitopes. Thus, alternative immunization strategies can enhance nAb development by altering GCs and modulating the immunodominance of non-neutralizing epitopes.|
|External links||PubMed:31080066 / Publisher's page|
|Methods||EM (single particle)|
|Resolution||16.4 - 29.5 A|
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