Abstract:
:Experimental whole-parasite immunization through concurrent administration of infectious Plasmodium sporozoites with drugs that prevent pathogenic blood-stage infection represents the current benchmark in malaria vaccine development. Key questions concerning translation remain, including the requirement for single-dose drug regimens that can reliably prevent breakthrough infections. We assessed the feasibility and efficacy of immunization with single-dose piperaquine chemoprophylaxis and concurrent sporozoite administration (PPQ-CPS) in the murine P. berghei ANKA/C57BL/6 infection model. We demonstrate that PPQ-CPS is protective with an efficacy comparable to previous findings using whole-parasite immunization under chloroquine chemoprophylaxis. PPQ-CPS immunization resulted in an expansion of intrahepatic and intrasplenic effector memory CD8(+) T cells. In summary, PPQ-CPS appears to be a safe and efficacious immunization regimen in the rodent malaria model and may thus become an important improvement regarding the translation of whole-parasite immunization toward a human malaria vaccine.
journal_name
Vaccinejournal_title
Vaccineauthors
Pfeil J,Sepp KJ,Heiss K,Meister M,Mueller AK,Borrmann Sdoi
10.1016/j.vaccine.2014.07.112subject
Has Abstractpub_date
2014-10-14 00:00:00pages
6005-11issue
45eissn
0264-410Xissn
1873-2518pii
S0264-410X(14)01197-9journal_volume
32pub_type
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