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Related Experiment Video

Updated: Jun 25, 2026

Forming Micro-and Nano-Plastics from Agricultural Plastic Films for Employment in Fundamental Research Studies

Forming Micro-and Nano-Plastics from Agricultural Plastic Films for Employment in Fundamental Research Studies

Published on: July 27, 2022

Polystyrene microplastics trigger intestinal inflammation through CXCL11-mediated T-cell recruitment.

Yao Tan¹, Xiaoyan Chen¹, Hao Ge¹

¹Guangxi Key Laboratory of Special Biomedicine, School of Medicine, Guangxi University, Nanning 530004, China.

Journal of Environmental Sciences (China)

|June 23, 2026

Summary

This summary is machine-generated.

Polystyrene microplastics cause intestinal inflammation in zebrafish by activating the interferon-gamma (INFγ)-STAT1 pathway. This molecular cascade increases C-X-C motif chemokine ligand 11 (CXCL11) to recruit T-cells, disrupting gut health and highlighting microplastic risks.

Keywords:

INFγ-STAT1 signaling Immunotoxicity Intestinal inflammation Polystyrene microparticles Zebrafish

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Area of Science:

Environmental toxicology
Molecular biology
Aquatic ecotoxicology

Background:

Polystyrene microplastics (PMs) are widespread aquatic pollutants.
The molecular mechanisms of PMs' ecotoxicity, especially intestinal inflammation, are not well understood.

Purpose of the Study:

To investigate the effects of environmentally relevant PMs concentrations on zebrafish (Danio rerio).
To elucidate the molecular pathways involved in PMs-induced intestinal inflammation.

Main Methods:

Zebrafish were exposed to PMs (1.0 μm) at 0, 25, and 250 μg/L for 4 weeks.
Histopathology, cytokine analysis, transcriptomics, qPCR, immunofluorescence, and Western blotting were employed.
The interferon-gamma (INFγ)-STAT1 pathway and downstream targets were analyzed.

Main Results:

The intestine was identified as the primary site of PMs accumulation and inflammation.
PM exposure led to significant histopathological damage and elevated pro-inflammatory cytokines (TNF-α, IL-2).
Activation of the INFγ-STAT1-CXCL11 signaling axis promoted T-cell infiltration into the zebrafish intestine.

Conclusions:

PMs disrupt intestinal homeostasis in zebrafish via the INFγ-STAT1-CXCL11 pathway.
This pathway amplifies inflammation by increasing CXCL11 expression and T-cell recruitment.
The study reveals a specific molecular mechanism of microplastic immunotoxicity in aquatic organisms.