Evidence map›Paper›PMID 40825573›Full record

ArticleJournal of extracellular vesicles2025

X-Ray Irradiation of Pseudomonas aeruginosa Induces Biogenesis of Outer-Inner Membrane Vesicles With Potential as a Vaccine Against Acute Pneumonia.

Li Zhang, Zhixue Shen, Yanwei Chen, Cuicui Ma, Mi Huang, Yueyue He, Guilan Wang, Dan Huang, Bo Su, Boguang Jiang and 6 more

Abstract read
In one paragraph

Article in Journal of extracellular vesicles, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

  1. Article
  2. Review
  3. 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

16 authors.

Li ZhangState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Zhixue ShenState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Yanwei ChenState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Cuicui MaState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Mi HuangState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Yueyue HeState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Guilan WangState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Dan HuangState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Bo SuCore Facilities of West China Hospital, Sichuan University, Chengdu, China.
Boguang JiangState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Yingjie LuoState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Wenfang LiState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Mao LianState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Xiaolong XuState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Xingjun ChengState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
Zhenling WangState Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China.ORCID https://orcid.org/0000-0003-0364-8948

Funding

Postdoctoral Research Fund of West China Hospital, Sichuan University 2024HXBH169Science and Technology Department of Sichuan Province 2023ZYD0169Science and Technology Department of Sichuan Province 2025ZNSFSC1739
6 · The paper itself

Abstract

Many bacteria produce extracellular vesicles (EVs) that play critical roles in various biological processes and hold significant potential for biomedical applications. However, the mechanisms underlying EV biogenesis remain incompletely understood. Using transmission electron microscopy, we demonstrate that X-ray irradiation induces outward blebbing of the inner membrane in Pseudomonas aeruginosa PAO1 (P. aeruginosa PAO1), leading to the formation of outer-inner membrane vesicles (OIMVs) through outer membrane pinching-off. The endolysin Lys, which is negatively regulated by PrtR and positively regulated by PrtN, is essential for OIMV production. Lys translocates into the periplasmic space, where it disrupts the peptidoglycan layer, causing morphological changes from rod-shaped to round cells and facilitating OIMV release. Furthermore, deletion of YciB, a protein crucial for inner membrane integrity, significantly increases OIMV production. In a murine model of acute pneumonia, OIMV immunisation significantly improves pulmonary bacterial clearance, reduces lung injury and enhances survival rates. Our findings reveal inner membrane blebbing as a novel mechanism of OIMV biogenesis in P. aeruginosa PAO1 under X-ray irradiation and highlight the potential of OIMVs as promising vaccine candidates against P. aeruginosa infections.

Indexed as

Bacterial Outer MembraneExtracellular VesiclesPneumoniaPseudomonas aeruginosaPseudomonas InfectionsAnimalsBacterial ProteinsDisease Models, AnimalEndopeptidasesFemaleMiceX-RaysBacterial ProteinsendolysinEndopeptidasesinner membrane blebbingOIMV biogenesisP. aeruginosavaccinesX‐ray irradiation

Identifiers

PMID40825573
PMCPMC12360855

What OpenQuestion holds

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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.