Evidence map›Paper›PMID 26416907›Full record

ArticleInfection and immunity2015

Chlamydial plasmid-encoded virulence factor Pgp3 neutralizes the antichlamydial activity of human cathelicidin LL-37.

Shuping Hou, Xiaohua Dong, Zhangsheng Yang, Zhongyu Li, Quanzhong Liu, Guangming Zhong

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
4.3field-weighted citation impact, top 5% 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, 52 citations in OpenAlex.

  1. Plasmid-encoded Pgp3 protein enhances the infectivity ofZhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2026
    Article
  2. Review
  3. Review
  4. Review
  5. Pathogenic and Protective Roles of Neutrophils inPathogens (Basel, Switzerland) · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Plasmid-mediated virulence inFrontiers in cellular and infection microbiology · 2023
    Review
  15. Article
  16. Review
  17. Review
  18. Article
  19. Anti-Psoriatic Effects of Middle Fragment of Chlamydial Plasmid-Encoded Protein pGP3 in an Imiquimod-Induced Psoriasis Mouse Model.Medical science monitor : international medical journal of experimental and clinical research · 2021
    Article
  20. 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

6 authors at 4 institutions in 2 countries.

Shuping HouDepartment of Microbiology & Immunology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA Department of Dermatovenereology, Tianjin Medical University General Hospital, Tianjin, People's Republic of China.
Xiaohua DongDepartment of Microbiology & Immunology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA Department of Pharmacology, School of Pharmacy, Hebei North University, Zhangjiakou, Hebei, People's Republic of China.
Zhangsheng YangDepartment of Microbiology & Immunology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA.
Zhongyu LiDepartment of Microbiology, University of South China, Hengyang, Hunan, People's Republic of China.
Quanzhong LiuDepartment of Dermatovenereology, Tianjin Medical University General Hospital, Tianjin, People's Republic of China.
Guangming ZhongDepartment of Microbiology & Immunology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA Zhongg@UTHSCSA.EDU.
The University of Texas Health Science Center at San Antonio · USHebei North University · CNTianjin Medical University General Hospital · CNUniversity of South China · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chlamydia trachomatis infection in the lower genital tract can ascend to and cause pathologies in the upper genital tract, potentially leading to severe complications, such as tubal infertility. However, chlamydial organisms depleted of plasmid or deficient in the plasmid-encoded Pgp3 are attenuated in ascending infection and no longer are able to induce the upper genital tract pathologies, indicating a significant role of Pgp3 in chlamydial pathogenesis. We now report that C. trachomatis Pgp3 can neutralize the antichlamydial activity of human cathelicidin LL-37, a host antimicrobial peptide secreted by both genital tract epithelial cells and infiltrating neutrophils. Pgp3 bound to and formed stable complexes with LL-37. We further showed that the middle region of Pgp3 (Pgp3m) was responsible for both the binding to and neutralization of LL-37, suggesting that Pgp3m can be targeted for attenuating chlamydial pathogenicity or developed for blocking LL-37-involved non-genital-tract pathologies, such as rosacea and psoriasis. Thus, the current study has provided significant information for both understanding the mechanisms of chlamydial pathogenesis and developing novel therapeutic agents.

Indexed as

Amino Acid SequenceAntigens, BacterialAntimicrobial Cationic PeptidesBacterial ProteinsCathelicidinsChlamydia trachomatisEscherichia coliGene ExpressionHeLa CellsHost-Pathogen InteractionsHumansMolecular Sequence DataMutationPlasmidsProtein BindingRecombinant ProteinsAntigens, BacterialAntimicrobial Cationic PeptidesBacterial ProteinsCathelicidinspgp3 protein, ChlamydiaRecombinant ProteinsVirulence Factors

Identifiers

PMID26416907
PMCPMC4645396
OpenAlexW2181426635

What OpenQuestion holds

Textmetadata
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.