Noordin, Naqib Rafieqin and Lau, Yee Ling and Cheong, Fei Wen and Fong, Mun Yik (2023) Inter-population genetic diversity and clustering of merozoite surface protein-1 (pkmsp-1) of plasmodium knowlesi isolates from Malaysia and Thailand. Tropical Medicine and Infectious Disease, 8 (5). ISSN 2414-6366, DOI https://doi.org/10.3390/tropicalmed8050285.
Full text not available from this repository.Abstract
The genetic diversity of pkmsp-1 of Malaysian Plasmodium knowlesi isolates was studied recently. However, the study only included three relatively older strains from Peninsular Malaysia and focused mainly on the conserved blocks of this gene. In this study, the full-length pkmsp-1 sequence of recent P. knowlesi isolates from Peninsular Malaysia was characterized, along with Malaysian Borneo and Thailand pkmsp-1 sequences that were retrieved from GenBank. Genomic DNA of P. knowlesi was extracted from human blood specimens and the pkmsp-1 gene was PCR-amplified, cloned, and sequenced. The sequences were analysed for genetic diversity, departure from neutrality, and geographical clustering. The pkmsp-1 gene was found to be under purifying/negative selection and grouped into three clusters via a neighbour-joining tree and neighbour net inferences. Of the four polymorphic blocks in pkmsp-1, block IV, was most polymorphic, with the highest insertion-deletion (indel) sites. Two allelic families were identified in block IV, thereby highlighting the importance of this block as a promising genotyping marker for the multiplicity of infection study of P. knowlesi malaria. A single locus marker may provide an alternate, simpler method to type P. knowlesi in a population.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education, Malaysia [Grant No: ]LRGS/1/2018/UM/01/1/1 |
| Uncontrolled Keywords: | Plasmodium knowlesi; Merozoite surface protein-1; Genetic diversity; Clustering; Block IV |
| Subjects: | Q Science > QR Microbiology R Medicine > RV Botanic, Thomsonian, and eclectic medicine |
| Divisions: | Faculty of Medicine > Parasitology Deparment |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 06 Nov 2025 03:28 |
| Last Modified: | 06 Nov 2025 03:28 |
| URI: | http://eprints.um.edu.my/id/eprint/49791 |
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