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Immunological characterization of Plasmodium vivax Pv32, a novel predicted GPI-anchored merozoite surface protein

Overview of attention for article published in Malaria Journal, July 2018
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  • Above-average Attention Score compared to outputs of the same age (62nd percentile)
  • Above-average Attention Score compared to outputs of the same age and source (60th percentile)

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Title
Immunological characterization of Plasmodium vivax Pv32, a novel predicted GPI-anchored merozoite surface protein
Published in
Malaria Journal, July 2018
DOI 10.1186/s12936-018-2401-7
Pubmed ID
Authors

Yang Cheng, Bo Wang, Feng Lu, Jin-Hee Han, Md Atique Ahmed, Eun-Taek Han

Abstract

The development of an effective malarial vaccine is an urgent need. Most glycosylphosphatidylinositol (GPI)-anchored proteins of Plasmodium parasites are exposed to neutralizing antibodies, and several are advanced vaccine candidates. In the present study, Plasmodium vivax Pv32 (PVX_084815) as a hypothetical, predicted GPI-anchored and cysteine-rich motif was identified from our previous findings with a focus on its antigenic profiling. The orthologue gene pv32, a predicted GPI anchor of P. falciparum PF3D7_1434400, has still not been well studied. The gene information of pv32 was obtained from PlasmoDB. Recombinant Pv32 protein was expressed and purified using a wheat germ cell-free expression system and a glutathione-Sepharose column. Naturally acquired immune response to recombinant Pv32 protein was evaluated using a protein microarray with 96 parasite-infected patients and 96 healthy individuals. Antibodies against recombinant Pv32 proteins from immune animals were produced, used and analyzed for the subcellular localization of native Pv32 protein by an immunofluorescence assay. A total of 48 pv32 sequences from 11 countries retrieved from PlasmoDB were used to determine the genetic diversity, polymorphisms and genealogical relationships with DNAsp and NETWORK software packages. Pv32 is encoded by a conserved gene with two introns that are located on chromosome 13 and expressed as a 32 kDa protein in mature asexual stage parasites. Immunofluorescence data showed that Pv32 localized on the merozoite surface in schizont-stage parasites. The recombinant Pv32 was recognized by 39.6% of antibodies from P. vivax-infected individuals compared with healthy individuals. Low levels of nucleotide diversity (π = 0.0028) and polymorphisms of pv32 were detected within worldwide isolates. This study shows the identification and characterization of the hypothetical protein, Pv32. Pv32 provides important characteristics, including a merozoite surface protein, a predicted GPI motif and Cysteine-rich motif among Plasmodium species. These results suggested that Pv32 is immunogenic with a merozoite surface pattern to antibodies during natural infection in humans.

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The data shown below were collected from the profiles of 8 X users who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 16 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 16 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 3 19%
Student > Bachelor 2 13%
Researcher 2 13%
Professor > Associate Professor 2 13%
Student > Master 1 6%
Other 2 13%
Unknown 4 25%
Readers by discipline Count As %
Immunology and Microbiology 3 19%
Medicine and Dentistry 2 13%
Biochemistry, Genetics and Molecular Biology 1 6%
Computer Science 1 6%
Business, Management and Accounting 1 6%
Other 2 13%
Unknown 6 38%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 4. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 06 August 2018.
All research outputs
#7,229,289
of 23,577,654 outputs
Outputs from Malaria Journal
#2,166
of 5,653 outputs
Outputs of similar age
#121,832
of 331,330 outputs
Outputs of similar age from Malaria Journal
#37
of 97 outputs
Altmetric has tracked 23,577,654 research outputs across all sources so far. This one has received more attention than most of these and is in the 68th percentile.
So far Altmetric has tracked 5,653 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.8. This one has gotten more attention than average, scoring higher than 59% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 331,330 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 62% of its contemporaries.
We're also able to compare this research output to 97 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 60% of its contemporaries.