Successful modification | The parasite was generated by the genetic modification |
The mutant contains the following genetic modification(s) |
Gene tagging
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Reference (PubMed-PMID number) |
Reference 1 (PMID number) : 23197789 |
MR4 number |
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Parent parasite used to introduce the genetic modification |
Rodent Malaria Parasite | P. berghei |
Parent strain/line | P. berghei ANKA |
Name parent line/clone |
P. berghei ANKA cl15cy1
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Other information parent line | A reference wild type clone from the ANKA strain of P. berghei (PubMed: PMID: 17406255). |
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The mutant parasite was generated by |
Name PI/Researcher | E.M. Pasini, C.J. Janse, B.M.D. Franke-Fayard |
Name Group/Department | Department of Parasitology |
Name Institute | Biomedical Primate Research Centre |
City | Rijswijk |
Country | The Netherlands |
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Name of the mutant parasite |
RMgm number | RMgm-690 |
Principal name | 1477cl3 |
Alternative name | |
Standardized name | |
Is the mutant parasite cloned after genetic modification | Yes |
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Phenotype |
Asexual blood stage | The tagged-protein is exported into the cytoplasm of the host erythrocyte and shows a location at the surface membrane of infected erythrocytes |
Gametocyte/Gamete | Gametocytes: the tagged-protein is exported into the cytoplasm of the host erythrocyte and shows a location at the surface membrane of infected erythrocytes |
Fertilization and ookinete | Not tested |
Oocyst | Not different from wild type |
Sporozoite | Not different from wild type |
Liver stage | The tagged protein is expressed in late liver stages (schizonts) where it is located in the parasitophorous vacuole. |
Additional remarks phenotype | The mutant parasite expresses an mCherry-tagged protein. The protein has been selected for tagging in a screen for putative exported proteins of P. berghei.
The genotype of the parasites has not been analysed in detail.
Southern analysis of PFG-separated chromosomes (to show integration into the chromosome on which the target gene is located) and/or diagnostic PCR (for correct integration of the construct) have been performed (see below). This analysis provided evidence for tagging of the correct gene. The construct used aims at integration of the tagging construct by single-cross-over integration resulting in the presence of a tagged copy of the endogenous gene.
Phenotype analyses of the blood stages by fluorescence microscopy show that the tagged-protein is exported into the cytoplasm of the host erythrocyte and shows a location at the surface membrane of infected erythrocytes.
The protein is not detected in oocysts and in sporozoites.
The tagged protein is expressed in late liver stages (schizonts) where it is located in the parasitophorous vacuole.
An additional mutant, in which PBANKA_0836800 was c-terminally tagged with EGFP, has been made in P. berghei ANKA 1037m1f1mocl1 (1941; RMgm-1283). P. berghei ANKA 1037m1f1mocl1 (1037cl1; RMgm-32) is a reference ANKA mutant line which expresses GFP-luciferase under control of a schizont-specific promoter. This reference line does not contain a drug-selectable marker (PubMed: PMID: 20019192).
Other mutants
RMgm-489: mutant lacking expression of PBANKA_0836800 and expressing GFP-luciferase under control of a schizont-specific promoter
RMgm-691: P. berghei K173 mutant expressing an mCherry-tagged version of PBANKA_0836800
RMgm-692: mutant lacking expression of PBANKA_010060 (SMAC) and expressing GFP-luciferase under control of a schizont-specific promoter (RMgm-662). This mutant is also expressing an mCherry-tagged version of PBANKA_0836800
RMgm-1283: An additional mutant, in which PBANKA_0836800 was c-terminally tagged with EGFP, has been made in P. berghei ANKA 1037m1f1mocl1.
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