Related Experiment Video
Updated: Jun 9, 2025
07:31
Detection of Fluorescent Nanoparticle Interactions with Primary Immune Cell Subpopulations by Flow Cytometry
Published on: March 28, 2014
17.6K
Nanoplastics: Immune Impact, Detection, and Internalization after Human Blood Exposure by Single-Cell Mass Cytometry
Laura Fusco1, Arianna Gazzi1, Linda Giro1,2
1ImmuneNano-lab, Department of Biomedical Sciences, University of Padua, Padua, 35131, Italy.
Advanced Materials (Deerfield Beach, Fla.)
|October 25, 2024
Summary
Nanoplastics (NPs) can enter human immune cells, affecting their function and distribution. This study used palladium-doped NPs to track their impact on immune cells, revealing potential health risks.
Area of Science:
- Environmental Health
- Toxicology
- Immunology
Background:
- Growing nanoplastic (NP) exposure poses human health risks due to bioaccumulation.
- NPs in human blood are detected, but their immune cell interactions and regulatory effects are unknown.
Purpose of the Study:
- To investigate the size-dependent impact of NPs on human immune cell subpopulations.
- To quantify NP uptake and effects on immune cell viability and function at the single-cell level.
Main Methods:
- Utilized palladium-doped polystyrene NPs (PS-Pd NPs) for single-cell mass cytometry (CyTOF) detection.
- Investigated size-dependent effects of carboxylate polystyrene NPs (50-200 nm) on 37 human immune cell subpopulations.
- Assessed NP impact on cell viability, functionality, and uptake, with in vivo validation in mice.
Main Results:
- Demonstrated NP interaction, interference, and translocation into multiple immune cell subpopulations.
- Quantified palladium atom count per cell, indicating NP uptake.
- Confirmed NP accumulation in mouse immune cells (monocytes, macrophages, dendritic cells) in liver, blood, and spleen.
Conclusions:
- NPs interact with and translocate into human immune cells, impacting their function.
- In vivo studies confirm NP accumulation in key immune cell types.
- Findings highlight potential risks of NP exposure to human immune system health.
