Evidence map›Paper›PMID 22509400›Full record

ArticlePloS one2012

An epithelial serine protease, AgESP, is required for Plasmodium invasion in the mosquito Anopheles gambiae.

Janneth Rodrigues, Giselle A Oliveira, Michalis Kotsyfakis, Rajnikant Dixit, Alvaro Molina-Cruz, Ryan Jochim, Carolina Barillas-Mury

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.3field-weighted citation impact, top 21% 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

16 citing papers in PubMed, 26 citations in OpenAlex.

  1. Review
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  3. Identification of a dengue 2 virus envelope protein receptor inProceedings of the National Academy of Sciences of the United States of America · 2024
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  14. No evidence for positive selection at two potential targets for malaria transmission-blocking vaccines in Anopheles gambiae s.s.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2013
    Article
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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

7 authors at 2 institutions in 1 country.

Janneth RodriguesLaboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, United States of America.
Giselle A Oliveira
Michalis Kotsyfakis
Rajnikant Dixit
Alvaro Molina-Cruz
Ryan Jochim
Carolina Barillas-Mury
National Institute of Allergy and Infectious Diseases · USNational Institutes of Health · US

Funding

Mosquito Immune Responses and Malaria TransmissionZIAAI000947 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI BARILLAS-MURY, CAROLINA · 2009 to 2025
$26.2M
Intramural NIH HHS
6 · The paper itself

Abstract

backgroundPlasmodium parasites need to cross the midgut and salivary gland epithelia to complete their life cycle in the mosquito. However, our understanding of the molecular mechanism and the mosquito genes that participate in this process is still very limited. METHODOLOGY/PRINCIPAL

findingsWe identified an Anopheles gambiae epithelial serine protease (AgESP) that is constitutively expressed in the submicrovillar region of mosquito midgut epithelial cells and in the basal side of the salivary glands that is critical for Plasmodium parasites to cross these two epithelial barriers. AgESP silencing greatly reduces Plasmodium berghei and Plasmodium falciparum midgut invasion and prevents the transcriptional activation of gelsolin, a key regulator of actin remodeling and a reported Plasmodium agonist. AgESP expression is highly induced in midgut cells invaded by Plasmodium, suggesting that this protease also participates in the apoptotic response to invasion. In salivary gland epithelial cells, AgESP is localized on the basal side--the surface with which sporozoites interact. AgESP expression in the salivary gland is also induced in response to P. berghei and P. falciparum sporozoite invasion, and AgESP silencing significantly reduces the number of sporozoites that invade this organ.

conclusionOur findings indicate that AgESP is required for Plasmodium parasites to effectively traverse the midgut and salivary gland epithelial barriers. Plasmodium parasites need to modify the actin cytoskeleton of mosquito epithelial cells to successfully complete their life cycle in the mosquito and AgESP appears to be a major player in the regulation of this process.

Indexed as

Amino Acid SequenceAnimalsAnophelesEpitheliumGelsolinGene Expression RegulationHumansMalariaMolecular Sequence DataPlasmodium falciparumSalivary GlandsSerine ProteasesGelsolinSerine Proteases

Identifiers

PMID22509400
PMCPMC3324419
OpenAlexW2069384559

What OpenQuestion holds

Textmetadata
LicenceCC0
Read underepoch 390

Registered trials

None linked

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.