Evidence map›Paper›PMID 24736563›Full record

ArticlePloS one2014

A flow cytometry-based quantitative drug sensitivity assay for all Plasmodium falciparum gametocyte stages.

Zenglei Wang, Min Liu, Xiaoying Liang, Salil Siriwat, Xiaolian Li, Xiaoguang Chen, Daniel M Parker, Jun Miao, Liwang Cui

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
5.8field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 29 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 2 countries.

Zenglei WangDepartment of Entomology, Pennsylvania State University, University Park, Pennsylvania, United States of America.
Min LiuDepartment of Entomology, Pennsylvania State University, University Park, Pennsylvania, United States of America; Department of Parasitology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong, P.R. China.
Xiaoying LiangDepartment of Entomology, Pennsylvania State University, University Park, Pennsylvania, United States of America.
Salil SiriwatDepartment of Entomology, Pennsylvania State University, University Park, Pennsylvania, United States of America.
Xiaolian LiDepartment of Entomology, Pennsylvania State University, University Park, Pennsylvania, United States of America.
Xiaoguang ChenDepartment of Parasitology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong, P.R. China.
Daniel M ParkerDepartment of Entomology, Pennsylvania State University, University Park, Pennsylvania, United States of America.
Jun MiaoDepartment of Entomology, Pennsylvania State University, University Park, Pennsylvania, United States of America.
Liwang CuiDepartment of Entomology, Pennsylvania State University, University Park, Pennsylvania, United States of America.
Pennsylvania State University · USSouthern Medical University · CN

Funding

Southeast Asia Malaria Research CenterU19AI089672 · NIAID · UNIVERSITY OF SOUTH FLORIDA · PI CUI, LIWANG · 2010 to 2023
$28.9M
NIAID NIH HHS U19 AI089672
6 · The paper itself

Abstract

backgroundMalaria elimination/eradication campaigns emphasize interruption of parasite transmission as a priority strategy. Screening for new drugs and vaccines against gametocytes is therefore urgently needed. However, current methods for sexual stage drug assays, usually performed by counting or via fluorescent markers are either laborious or restricted to a certain stage. Here we describe the use of a transgenic parasite line for assaying drug sensitivity in all gametocyte stages.

methodsA transgenic parasite line expressing green fluorescence protein (GFP) under the control of the gametocyte-specific gene α-tubulin II promoter was generated. This parasite line expresses GFP in all gametocyte stages. Using this transgenic line, we developed a flow cytometry-based assay to determine drug sensitivity of all gametocyte stages, and tested the gametocytocidal activities of four antimalarial drugs.

findingsThis assay proved to be suitable for determining drug sensitivity of all sexual stages and can be automated. A Z' factor of 0.79 ± 0.02 indicated that this assay could be further optimized for high-throughput screening. The daily sensitivity of gametocytes to three antimalarial drugs (chloroquine, dihydroartemisinin and pyronaridine) showed a drastic decrease from stage III on, whereas it remained relatively steady for primaquine.

conclusionsA drug assay was developed to use a single transgenic parasite line for determining drug susceptibility of all gametocyte stages. This assay may be further automated into a high-throughput platform for screening compound libraries against P. falciparum gametocytes.

Indexed as

Flow CytometryParasitic Sensitivity TestsAntimalarialsGene ExpressionGene Knock-In TechniquesGenes, ReporterHumansInhibitory Concentration 50Plasmodium falciparumAntimalarials

Identifiers

PMID24736563
PMCPMC3988044
OpenAlexW2069521464

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.