Evidence map›Paper›PMID 24862934›Full record

ArticleHuman immunology2014

Cryptosporidium parvum induces SIRT1 expression in host epithelial cells through downregulating let-7i.

Hongguan Xie, Ningfei Lei, Ai-Yu Gong, Xian-Ming Chen, Guoku Hu

Abstract read
In one paragraph

Article in Human immunology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

18 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Extracellular vesicle-mediated delivery of anti-miR-106b inhibits morphine-induced primary ciliogenesis in the brain.Molecular therapy : the journal of the American Society of Gene Therapy · 2023
    Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. NADFrontiers in molecular biosciences · 2021
    Review
  11. Aging, Melatonin, and the Pro- and Anti-Inflammatory Networks.International journal of molecular sciences · 2019
    Review
  12. Review
  13. Article
  14. Tat-Mediated Induction of miRs-34a & -138 Promotes Astrocytic Activation via Downregulation of SIRT1: Implications for Aging in HAND.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2017
    Article
  15. Review
  16. Article
  17. Exploring NAD+ metabolism in host-pathogen interactions.Cellular and molecular life sciences : CMLS · 2016
    Review
  18. Article
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

5 authors at 2 institutions in 2 countries.

Hongguan XieCollege of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
Ningfei LeiCollege of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
Ai-Yu GongDepartment of Medical Microbiology and Immunology, Creighton University Medical Center, Omaha, NE 68178, USA.
Xian-Ming ChenDepartment of Medical Microbiology and Immunology, Creighton University Medical Center, Omaha, NE 68178, USA.
Guoku HuCollege of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China. Electronic address: guokuhu@gmail.com.
Chengdu University of Technology · CNCHI Health Creighton University Medical Center - Bergan Mercy · US

Funding

Epithelial exosomes and TLR-mediated mucosal defenseU01AI095532 · NIAID · CREIGHTON UNIVERSITY · PI CHEN, XIAN-MING · 2011 to 2015
$1.5M
NIAID NIH HHS U01 AI095532
6 · The paper itself

Abstract

Epithelial cells along human gastrointestinal mucosal surface express pathogen-recognizing receptors and actively participate in the regulation of inflammatory reactions in response to microbial infection. The NAD-dependent deacetylase sirtuin-1 (SIRT1), one member of the sirtuin family of proteins and an NAD-dependent deacetylase has been implicated in the regulation of multiple cellular processes, including inflammation, longevity, and metabolism. In this study, we demonstrated that infection of cultured human biliary epithelial cells (H69 cholangiocytes) with a parasitic protozoan, Cryptosporidium parvum, induced SIRT1 expression at the protein level without a change in SIRT1 mRNA content. Using real-time PCR and Northern blot analyses, we found that C. parvum infection decreased the expression of let-7i in infected H69 cells. Down-regulation of let-7i caused relief of miRNA-mediated translational suppression of SIRT1 and consequently, resulted in an increased SIRT1 protein level in infected H69 cell cultures. Moreover, gain- and loss-of-function studies revealed that let-7i could modulate NF-κB activation through modification of SIRT1 protein expression. Thus, our data suggest that let-7i regulates SIRT1 expression in human biliary epithelial cells in response to microbial challenge, suggesting a new role of let-7i in the regulation of NF-κB-mediated epithelial innate immune response.

Indexed as

Cell Line, TumorCryptosporidium parvumEpithelial CellsGene Expression RegulationHost-Parasite InteractionsHumansInterleukin-8MicroRNAsRNA, MessengerSignal TransductionSirtuin 1Interleukin-8MicroRNAsmirnlet7 microRNA, humanRNA, MessengerSIRT1 protein, humanSirtuin 1C. parvumEpitheliumlet-7NF-κBSIRT1

Identifiers

PMID24862934
PMCPMC4327856
OpenAlexW2076955223

What OpenQuestion holds

Textmetadata
LicenceTDM
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.