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Genetic polymorphism and clustering of the Plasmodium cynomolgi Duffy binding protein 1 region II of recent macaque isolates from Peninsular Malaysia

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Abstract

Plasmodium cynomolgi is a simian malaria parasite that has been increasingly infecting humans. It is naturally present in the long-tailed and pig-tailed macaques in Southeast Asia. The P. cynomolgi Duffy binding protein 1 region II [PcDBP1(II)] plays an essential role in the invasion of the parasite into host erythrocytes. This study investigated the genetic polymorphism, natural selection and haplotype clustering of PcDBP1(II) from wild macaque isolates in Peninsular Malaysia. The genomic DNA of 50 P. cynomolgi isolates was extracted from the macaque blood samples. Their PcDBP1(II) gene was amplified using a semi-nested PCR, cloned into a plasmid vector and subsequently sequenced. The polymorphism, natural selection and haplotypes of PcDBP1(II) were analysed using MEGA X and DnaSP ver.6.12.03 programmes. The analyses revealed high genetic polymorphism of PcDBP1(II) (π = 0.026 ± 0.004; Hd = 0.996 ± 0.001), and it was under purifying (negative) selection. A total of 106 haplotypes of PcDBP1(II) were identified. Phylogenetic and haplotype analyses revealed two groups of PcDBP1(II). Amino acid length polymorphism was observed between the groups, which may lead to possible phenotypic difference between them.

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Data availability

All datasets are presented in the manuscript. Nucleotide sequences generated in the study are deposited into GenBank.

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Acknowledgements

The authors thank the Department of Wildlife and National Parks Peninsular Malaysia for their help in field macaque sampling (Permit Number: W-00256-15-19).

Funding

This study was funded by the Fundamental Research Grant Scheme (FRGS) of the Ministry of Higher Education Malaysia (Grant Number: FRGS/1/2020/SKK0/UM/01/3), awarded to Fong MY.

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Authors and Affiliations

Authors

Contributions

Investigation, data curation and formal analysis: Latif ENM, Noordin NR, Shahari S; conceptualization, methodology and supervision: Fong MY, Lau YL, Amir A, Cheong FW; resources: Shahari S, Abdullah ML, Lau YL, Fong MY; writing – original draft and visualization: Latif ENM; writing – review & editing: Noordin NR, Shahari S, Amir A, Cheong FW, Lau YL, Abdullah ML, Fong MY; funding acquisition and project administration: Fong MY. The first draft of the manuscript was written by Latif ENM and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Mun Yik Fong.

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Ethical approval

This study was approved by the University of Malaya Institutional Animal Care and Use Committee (M/06122019/25022019–01/R), and the macaque blood sampling protocol was approved by UC Davis IACUC (Protocol No. 16048). All methods were performed in accordance with relevant guidelines and regulations.

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Not applicable.

Competing interests

The authors declare no competing interests.

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Section Editor: Alexander Maier

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Supplementary Information

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Supplementary file1 (XLSX 337 KB)

436_2024_8125_MOESM2_ESM.tif

Supplementary file2 Supplementary data 2. Multiple alignment of deduced amino acid sequences of the 106 haplotypes corresponding to the amino acid sequences of the reference of Strain B (XM_004221494) and Berok-C2-lab adapted (OR198184). Polymorphic amino acids are listed for each haplotype. Monomorphic, dimorphic, trimorphic and tetramorphic amino acid changes are marked in yellow, blue, green, and red shadings, respectively. Numbers in the top row indicate amino acid positions. The total number of sequences for each haplotype is listed in the panel on the right. (TIF 1069 KB)

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Latif, E.N.M., Noordin, N.R., Shahari, S. et al. Genetic polymorphism and clustering of the Plasmodium cynomolgi Duffy binding protein 1 region II of recent macaque isolates from Peninsular Malaysia. Parasitol Res 123, 105 (2024). https://doi.org/10.1007/s00436-024-08125-0

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  • DOI: https://doi.org/10.1007/s00436-024-08125-0

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