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A Hydrogel Culture System Regulates Human Adipocyte Function.

Jason Junhyoung Kwon¹, Jie Li¹, Joshua Yu-Chung Liu²

¹Department of Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, USA.

International Journal of Molecular Sciences

|November 27, 2025

Summary

Matrix stiffness significantly impacts adipocyte function. Optimal stiffness, similar to native tissue, enhances fat cell growth and lipid storage, while extremes impair these processes.

Keywords:

adipocyte adipogenesis extracellular matrix hydrogel lipid storage

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A Microphysiologic Platform for Human Fat: Sandwiched White Adipose Tissue

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Published on: August 15, 2018

A Human 3D Extracellular Matrix-Adipocyte Culture Model for Studying Matrix-Cell Metabolic Crosstalk

A Human 3D Extracellular Matrix-Adipocyte Culture Model for Studying Matrix-Cell Metabolic Crosstalk

Published on: November 7, 2019

Area of Science:

Biomaterials Science
Cell Biology
Metabolic Research

Background:

Adipose tissue extracellular matrix (ECM) changes are linked to obesity.
The influence of ECM mechanics on adipocyte function remains unclear.

Purpose of the Study:

To investigate the effect of matrix stiffness on adipocyte function.
To determine the optimal mechanical properties of the ECM for adipocyte health and function.

Main Methods:

Utilized a hydrogel-adipocyte culture system to control matrix stiffness.
Performed transcriptomic analysis to identify regulated signaling pathways.

Main Results:

Intermediate matrix stiffness, mimicking native human adipose tissue, maximized adipogenesis and lipid storage.
Matrix stiffness outside this optimal range inhibited adipogenesis and lipid storage.
Matrix stiffness modulated signaling pathways involved in lipid metabolism, immunity, inflammation, and angiogenesis.

Conclusions:

Matrix mechanics play a crucial role in regulating adipocyte function.
Findings provide insights for optimizing in vitro adipocyte culture models.
Results inform the design of future adipocyte delivery vehicles for therapeutic applications.