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Related Concept Videos

The Extracellular Matrix01:29

The Extracellular Matrix

8.8K
Overview
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
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Overview of Cell-Matrix Interactions01:24

Overview of Cell-Matrix Interactions

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The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
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Extracellular Matrix01:26

Extracellular Matrix

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Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
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Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

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In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
Anchoring junctions mechanically attach a cell to the...
2.5K
Matrix Proteoglycans and Glycoproteins01:21

Matrix Proteoglycans and Glycoproteins

3.8K
Proteoglycans are extensively glycosylated proteins, commonly found in the extracellular matrix, interwoven with collagen fibers. Hyaline cartilage, the most common type of cartilage in the body, consists of short and dispersed collagen fibers associated with large amounts of proteoglycans. These proteoglycans have long negative charges that attract cations, which in turn attract water molecules. This influx of ions and water molecules swells up the proteoglycan like a water-soaked gel that can...
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Connective Tissue Fibers and Ground Substance01:17

Connective Tissue Fibers and Ground Substance

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One of the significant functions of connective tissue is connecting tissues and organs. Unlike epithelial tissue that is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. The matrix usually includes a large amount of extracellular material produced by the connective tissue cells that are embedded within it. It plays a significant role in the functioning of this tissue. The major component of the matrix is a...
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Updated: May 28, 2025

A Rapid, Scalable Method for the Isolation, Functional Study, and Analysis of Cell-derived Extracellular Matrix
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A Rapid, Scalable Method for the Isolation, Functional Study, and Analysis of Cell-derived Extracellular Matrix

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A Simple Framework for Agent-Based Modeling with Extracellular Matrix.

John Metzcar1,2, Ben S Duggan3, Brandon Fischer1

  • 1Intelligent Systems Engineering, Indiana University, 700 N. Woodlawn, Bloomington, IN, 47408, USA.

Bulletin of Mathematical Biology
|February 12, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a new computational framework for modeling cell-extracellular matrix interactions. The model captures how cells remodel their environment and how the matrix influences cell behavior, aiding in understanding complex biological processes.

Keywords:
Agent-based modelingCancer and basement membrane invasionCollective migrationExtracellular matrixFibrosisStigmergy

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Area of Science:

  • Computational biology
  • Cellular microenvironment modeling
  • Multiscale biological systems

Background:

  • Extracellular matrix (ECM) is vital for cellular functions and disease processes.
  • Modeling ECM and cell-ECM interactions presents a multiscale challenge.
  • Existing computational frameworks often lack intermediate detail or focus on single ECM aspects.

Purpose of the Study:

  • To develop a PhysiCell-based framework for modeling bidirectional cell-ECM interactions.
  • To represent ECM microstructure with variables like anisotropy, density, and fiber orientation.
  • To enable cells to remodel ECM and be influenced by it.

Main Methods:

  • Utilized the PhysiCell agent-based modeling platform.
  • Developed an intermediate-detail framework representing ECM as an array of elements.
  • Incorporated cell-mediated ECM remodeling and ECM-mediated cell behavior changes.

Main Results:

  • Demonstrated framework utility in cellular invasion, wound healing, and collective migration.
  • Showcased the framework's ability to capture diverse cell-ECM interactions.
  • Highlighted accessibility of ECM microstructure variables for integration into cell behaviors.

Conclusions:

  • The developed framework offers a simplified yet effective approach to modeling cell-ECM dynamics.
  • It facilitates rapid modeling of various cell-matrix biology scenarios.
  • The open-source framework is available for broader research use.