Abstract
To construct the recombinant Lactococcus lactis as oral delivery vaccination against malaria. The C-terminal 19-ku fragments of MSP1 (MSP-1(19)) of Plasmodium yoelii 265-BY was expressed in L. lactis and the recombinant L. lactis was administered orally to BALB/c and C57BL/6 mice. After seven interval vaccinations within 4 wk, the mice were challenged with P. yoelii 265-BY parasites of erythrocytic stage. The protective efficacy of recombinant L. lactis was evaluated. The peak parasitemias in average for the experiment groups of BALB/c and C57BL/6 mice were 0.8+/-0.4% and 20.8+/-26.5%, respectively, and those of their control groups were 12.0+/-0.8% and 60.8+/-9.6%, respectively. None of the BALB/c mice in both experimental group and control group died during the experiment. However, all the C57BL/6 mice in the control group died within 23 d and all the vaccinated mice survived well. The results imply the potential of recombinant L. lactis as oral delivery vaccination against malaria.
MeSH Terms
Administration, Oral
Animals
Humans
Lactococcus lactis/immunology
Malaria/immunology,prevention & control,veterinary
Malaria Vaccines/administration & dosage,therapeutic use
Merozoite Surface Protein 1/genetics,metabolism
Mice
Mice, Inbred BALB C
Mice, Inbred C57BL
Parasitemia
Peptide Fragments/genetics,metabolism
Plasmodium yoelii/immunology
Protein Subunits/genetics,metabolism
Protozoan Proteins/genetics,metabolism
Recombinant Fusion Proteins/genetics,metabolism
Rodent Diseases/immunology,prevention & control
Survival Rate
Vaccination
Chemicals
Malaria Vaccines
Merozoite Surface Protein 1
Peptide Fragments
Protein Subunits
Protozoan Proteins
Recombinant Fusion Proteins
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Zhang Zhi-Hong
Department of Biochemistry, Fudan University, 220 Han Dan Road, Shanghai 200433, China.
Jiang Pei-Hong
Li Ning-Jun
Shi Mi
Huang Weida
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