Leishmania major Adenylate kinase immunization offers partial protection to a susceptible host.
PARASITE IMMUNOLOGY(2020)
摘要
Leishmania major causes mild-to-severe cutaneous lesions resulting in significant disfigurations, if untreated. The drugs are toxic, and drug-resistance parasites are emerging. Therefore, a prophylactic vaccination is an urgent need. As no vaccine is available, we compared the genes expressed by virulent and avirulent parasites. We identify L major adenylate kinase (AdeK) as a probable vaccine candidate after a series of experimentations. We cloned the gene in mammalian pcDNA6/HisA and pet28a(+) vector for in vivo expression following immunization and in vitro protein expression for booster, respectively. We observed that immunization of susceptible BALB/c mice with AdeK resulted in significant protection against L major challenge infection. The protection was accompanied by increased IFN-gamma producing lymphocytes and reduced IL-4, IL-17 and IL-10 secreting central and effector Th2, Th17 and Treg memory cells, respectively. These observations indicate L major AdeK as a potential vaccine candidate.
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关键词
adenylate kinase,IFN-gamma,leishmania,Th17,Th2,vaccine
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