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Related Experiment Video

Updated: Jan 12, 2026

Quantification of Monocyte Chemotactic Activity In Vivo and Characterization of Blood Monocyte Derived Macrophages

Quantification of Monocyte Chemotactic Activity In Vivo and Characterization of Blood Monocyte Derived Macrophages

Published on: August 12, 2019

Mechano-induced patterned domain formation by monocytes.

Wenxuan Du^1,2, Jingyi Zhu^2,3, Yufei Wu^2,4

¹Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA.

Nature Materials

|November 5, 2025

Summary

This summary is machine-generated.

Human monocytes form multicellular domains on soft hydrogels, a unique behavior enhancing their survival by altering cell adhesion and migration. This discovery sheds light on collective cell dynamics in response to tissue stiffness.

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Area of Science:

Biophysics
Cell Biology
Immunology

Background:

Cellular phenotypes and functions are significantly influenced by matrix stiffness and mechanosignalling.
The impact of tissue stiffness on monocyte behavior and the emergence of collective cell behavior remains underexplored.

Purpose of the Study:

To investigate how tissue stiffness affects the behavior of human primary monocytes.
To understand the mechanisms behind the formation of collective cell behavior in monocytes.

Main Methods:

Utilized soft collagen-coated hydrogels with physiological stiffnesses to culture human primary monocytes.
Employed computational modeling, including the Cahn-Hilliard equation and Turing mechanism, to simulate and understand domain formation.
Experimentally validated computational model predictions regarding cell seeding density, chemotaxis, and random migration.

Main Results:

Human monocytes uniquely form dynamic, regular, reversible, multicellular domains on soft hydrogels.
Intercellular adhesion is initiated by the β2 integrin-ICAM-1 complex, while soluble inhibitory factors maintain domain stability.
Domain formation enhances monocyte survival, albeit with inhibited phagocytic capability.

Conclusions:

Cells can generate complex phases by leveraging mechanosensing, short-range interactions, and long-range signals.
Monocyte collective behavior and domain formation are driven by a balance of local activation and global inhibition mechanisms.
This study reveals a novel survival strategy for monocytes mediated by matrix stiffness and collective behavior.