Evidence map›Paper›PMID 29291748›Full record

ArticleParasites & vectors2018

P2X7 receptor mediates NLRP3-dependent IL-1β secretion and parasite proliferation in Toxoplasma gondii-infected human small intestinal epithelial cells.

Juan-Hua Quan, Rui Huang, Zhuang Wang, Shuai Huang, In-Wook Choi, Yu Zhou, Young-Ha Lee, Jia-Qi Chu

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 2 pooled it
15.8field-weighted citation impact, top 1% 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

43 citing papers in PubMed, 2 syntheses or guidelines pooled it, 170 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

8 authors at 2 institutions in 2 countries.

Juan-Hua QuanDepartment of Gastroenterology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, 524001, People's Republic of China.
Rui HuangStem Cell Research and Cellular Therapy Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, 524001, People's Republic of China.
Zhuang WangDepartment of Gastroenterology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, 524001, People's Republic of China.
Shuai HuangDepartment of Gastroenterology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, 524001, People's Republic of China.
In-Wook ChoiDepartment of Infection Biology, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.
Yu ZhouDepartment of Gastroenterology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, 524001, People's Republic of China.
Young-Ha LeeDepartment of Infection Biology, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea. yhalee@cnu.ac.kr.
Jia-Qi ChuStem Cell Research and Cellular Therapy Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, 524001, People's Republic of China. chujiaqi@gdmu.edu.cn.
Guangdong Medical College · CNChungnam National University · KR

Funding

National Natural Science Foundation of China 81300368National Natural Science Foundation of China 81301449National Natural Science Foundation of China 81771612the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education NRF-2017R1A2B4012822the Science Foundation of Guangdong Medical University M2015018the Special Funds of Public Interest Research and Capacity Building of Guangdong Province, China 2015A030302078
6 · The paper itself

Abstract

backgroundToxoplasma gondii can invade and replicate in all nucleated cells in a wide range of host species, and infection induces IL-1β production. IL-1β plays central roles in the stimulation of the innate immune system and inflammation. However, little is known of the innate immune responses in human fetal small intestinal epithelial cells (FHs 74 Int cells) after T. gondii infection.

methodsFHs 74 Int cells were infected with the T. gondii GFP-RH strain. Then, IL-1β production and its mechanisms of action were evaluated using ELISA, MTT cell viability assays, Western blotting, immunofluorescence, quantitative real-time polymerase chain reaction (qRT-PCR), and gene-specific small interfering RNA (siRNA) transfection.

resultsInfection of FHs 74 Int cells by T. gondii triggered significant time- and dose-dependent IL-1β production. Although T. gondii activated NLRP1, NLRP3, NLRC4 and AIM2 inflammasomes in FHs 74 Int cells, NLRP3 levels were consistently and significantly time-dependently increased, while the other inflammasomes were not. Transfection with siRNA targeting NLRP3, cleaved caspase-1 (Casp-1) or ASC significantly reduced T. gondii-induced IL-1β production, whereas T. gondii proliferation was markedly increased. Toxoplasma gondii infection activated P2X7 receptor (P2X7R) levels in FHs 74 Int cells in a time-dependent manner; however, transfection with siRNA targeting P2X7R significantly reduced T. gondii-induced IL-1β secretion and substantially increased T. gondii proliferation, which is mediated by decreased protein expression levels of NLRP3, cleaved Casp-1 and ASC. Collectively, NLRP3-dependent IL-1β secretion is mediated by P2X7R in small intestinal epithelial cells in response to T. gondii infection, thereby controlling parasite proliferation.

conclusionsThis study revealed that the P2X7R/NLRP3 pathway plays important roles in IL-1β secretion and inhibition of T. gondii proliferation in small intestinal epithelial cells. These results not only contribute to our understanding of the mucosal immune mechanisms of T. gondii infection but also offer new insight into the identification of innate resistance in the gut epithelium.

Indexed as

Host-Pathogen InteractionsBlotting, WesternCell LineCell SurvivalEnzyme-Linked Immunosorbent AssayEpithelial CellsFluorescent Antibody TechniqueFormazansGene SilencingHumansInterleukin-1betaNLR Family, Pyrin Domain-Containing 3 ProteinReal-Time Polymerase Chain ReactionReceptors, Purinergic P2X7Tetrazolium SaltsToxoplasmaFormazansInterleukin-1betaMTT formazanNLR Family, Pyrin Domain-Containing 3 ProteinNLRP3 protein, humanP2RX7 protein, humanReceptors, Purinergic P2X7Tetrazolium SaltsHuman small intestinal epithelial cellsIL-1βNLRP3 inflammasomeP2X7 receptorProliferationToxoplasma gondii

Identifiers

PMID29291748
PMCPMC5748956
OpenAlexW2781647206

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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.