Integrated analysis of HBV-specific CD4 T cell and B cell responses to define their role in chronic hepatitis B and HBV functional cure

Active Project Grant Awarded Last action

Award ID
R01AI184931
Recipient
Awarding agency
Obligated
$3,343,106

Award facts

Assistance listing
93.855 Allergy and Infectious Diseases Research
Completion date 48% complete
Place of performance
Boston, MA 02114, USA

Award details come from USAspending.gov.

Description

Abstract
The overarching goal of this multi-PI R01 proposal is to identify the mediators of functional cure of hepatitis B virus (HBV) infection in the cellular and humoral immune responses. Understanding the immune correlates of HBV functional cure, but also the molecular pathways involved in the immune dysregulation leading to persistent HBV infection and hepatitis will greatly facilitate design of effective immunotherapies and therapeutic vaccinations. HBV chronically infects >250 million people and remains a significant public health burden, despite the availability of an effective prophylactic vaccine for more than 30 years. While some infected individuals can naturally control viral replication, known as functional cure, the required immune conditions, particularly in the CD4 T cell and B cell responses, are undefined. Similarly, the exact mechanisms of how HBV-specific CD4 T cell and B cell responses are subverted in persistent infection remains unclear. In this study, we will study the immune responses of well-defined clinical cohorts across the different HBV infection outcomes. The two aims are: (1) to define HBV-specific CD4 T cell functions and the molecular signatures important in immune suppression versus cure; (2) to define HCV-specific humoral responses and the molecular signatures in B cells associated with viral pathogenesis and cure. The two highly complementary and synergistic aims will be analyzed in a highly integrated systems approach, allowing novel understanding of how CD4 T cells, antibodies and B cells synergize in order to control HBV infection. By using the same tissue specimens from the clinical cohorts for all we will achieve a holistic and integrated understanding of the immune landscapes presented in the different manifestations caused by HBV infection. The results have the potential to guide novel immunotherapeutic approaches aimed at inducing sustained control of HBV without the need for life-long antiviral treatments.

Transactions

Action Obligated Date
Amendment $160,224
Amendment $957,683
Amendment $111,823
Amendment $1,056,688
Original award $1,056,688

Subawards

Subrecipient Amount Awarded
Fundacao Oswaldo Cruz Hepatitis B virus (HBV) infection remains a major threat to global health, where approximately 300 million persons worldwide are infected. Due to its… $320,448
Fundacao Oswaldo Cruz $160,224
J. Craig Venter Institute, Inc. In this collaborative project, my lab will perform the following activities: • Implement computational methods for single cell RNA-seq (scRNA-seq)… $437,301
Scripps Research Institute In this collaborative consortium, the Law laboratory will study the immune responses of hepatitis B patients at different disease stages. Currently there is… $1,304,881

Quick answers

Who received award R01AI184931?

R01AI184931 was awarded to The General Hospital Corporation by National Institute of Allergy and Infectious Diseases (National Institutes of Health) on July 1, 2024.

How much is award R01AI184931 worth?

$3,343,106 has been obligated on R01AI184931.

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