Evidence map›Paper›PMID 19816559›Full record

ArticlePLoS pathogens2009

A granulin-like growth factor secreted by the carcinogenic liver fluke, Opisthorchis viverrini, promotes proliferation of host cells.

Michael J Smout, Thewarach Laha, Jason Mulvenna, Banchob Sripa, Sutas Suttiprapa, Alun Jones, Paul J Brindley, Alex Loukas

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 102 papers.

0numbers the graph read from it
0cells of the map it votes in
102citing papers in PubMed
5.9field-weighted citation impact, top 3% 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

102 citing papers in PubMed, 189 citations in OpenAlex.

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  11. Liver Flukes: Clonorchis and Opisthorchis.Advances in experimental medicine and biology · 2024
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  18. Pathogens (Basel, Switzerland) · 2023
    Review
  19. Extracellular vesicles of the liver flukeCurrent research in parasitology & vector-borne diseases · 2023
    Article
  20. Article

42 more citing papers are in PubMed but not listed here.

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

8 authors at 4 institutions in 3 countries.

Michael J SmoutDivision of Infectious Diseases, Queensland Institute of Medical Research, Queensland, Australia.
Thewarach Laha
Jason Mulvenna
Banchob Sripa
Sutas Suttiprapa
Alun Jones
Paul J Brindley
Alex Loukas
Khon Kaen University · THUniversity of Queensland · AUGeorge Washington University · USQIMR Berghofer Medical Research Institute · AU

Funding

Pathogenesis of Liver Fluke Induced Cancer in ThailandU01AI065871 · NIAID · TULANE UNIVERSITY OF LOUISIANA · PI BRINDLEY, PAUL J · 2005 to 2009
$3.5M
NIAID NIH HHS U01 AI065871NIAID NIH HHS U01AI065871
6 · The paper itself

Abstract

The human liver fluke, Opisthorchis viverrini, infects millions of people throughout south-east Asia and is a major cause of cholangiocarcinoma, or cancer of the bile ducts. The mechanisms by which chronic infection with O. viverrini results in cholangiocarcinogenesis are multi-factorial, but one such mechanism is the secretion of parasite proteins with mitogenic properties into the bile ducts, driving cell proliferation and creating a tumorigenic environment. Using a proteomic approach, we identified a homologue of human granulin, a potent growth factor involved in cell proliferation and wound healing, in the excretory/secretory (ES) products of the parasite. O. viverrini granulin, termed Ov-GRN-1, was expressed in most parasite tissues, particularly the gut and tegument. Furthermore, Ov-GRN-1 was detected in situ on the surface of biliary epithelial cells of hamsters experimentally infected with O. viverrini. Recombinant Ov-GRN-1 was expressed in E. coli and refolded from inclusion bodies. Refolded protein stimulated proliferation of murine fibroblasts at nanomolar concentrations, and proliferation was inhibited by the MAPK kinase inhibitor, U0126. Antibodies raised to recombinant Ov-GRN-1 inhibited the ability of O. viverrini ES products to induce proliferation of murine fibroblasts and a human cholangiocarcinoma cell line in vitro, indicating that Ov-GRN-1 is the major growth factor present in O. viverrini ES products. This is the first report of a secreted growth factor from a parasitic worm that induces proliferation of host cells, and supports a role for this fluke protein in establishment of a tumorigenic environment that may ultimately manifest as cholangiocarcinoma.

Indexed as

AnimalsAntibodiesBile Duct NeoplasmsBile Ducts, IntrahepaticCell DivisionCholangiocarcinomaCricetinaeEpitopesFasciola hepaticaGranulinsGrowth SubstancesHumansIntercellular Signaling Peptides and ProteinsMiceNeoplasm InvasivenessPhylogenyAntibodiesEpitopesGranulinsGrowth SubstancesIntercellular Signaling Peptides and Proteins

Identifiers

PMID19816559
PMCPMC2749447
OpenAlexW2083296923

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.