Identification of CTL Epitopes on Efflux Pumps of the ATP-Binding Cassette and the Major Facilitator Superfamily of Mycobacterium tuberculosis

Author:

Lin Yan1ORCID,Dong Yu1ORCID,Gao Yanfeng1ORCID,Shi Ranran1ORCID,Li Yubing1ORCID,Zhou Xiuman1ORCID,Liu Wenwen1ORCID,Li Guodong1ORCID,Qi Yuanming1ORCID,Wu Yahong1ORCID

Affiliation:

1. School of Life Sciences, Zhengzhou University, Zhengzhou 450001, China

Abstract

Tuberculosis is the world’s most deadly infectious disease, with 10 million people falling ill and 1.5 million people dying from the disease every year. With the increasing number of drug-resistant Mycobacterium tuberculosis (MTB) strains and prevalence of coinfection of MTB with human immunodeficiency virus, many challenges remain in the prevention and treatment of tuberculosis. Therefore, the development of safe and effective tuberculosis vaccines is an urgent issue. In this study, we identified cytotoxic T lymphocyte epitopes on drug resistance-associated membrane protein efflux pumps of MTB, the ATP-binding cassette and the major facilitator superfamilies. First, three online software were used to predict HLA-A2-restricted epitopes. Then, the candidate epitopes were confirmed with the T2A2 cell binding affinity and peptide/MHC (pMHC) complex stability assays and in vitro immune activity experiments. Two drug-resistant T lymphocyte epitopes, designated Rv1218c-p24 and Rv2477c-p182, were selected, and their immunogenic activities studied in vivo in genetically engineered mice. The immune activities of these two epitopes were improved with the help of complete Freund’s adjuvant (CFA). The epitopes identified here provide a foundation for the diagnosis and treatment of patients infected with drug resistant and the future development of a multiepitope vaccine.

Funder

Foundation of Henan Province

Publisher

Hindawi Limited

Subject

Immunology,General Medicine,Immunology and Allergy

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