Related Experiment Video
Updated: Jun 9, 2026
07:14
Fabrication of a Biomimetic Nano-Matrix with Janus Base Nanotubes and Fibronectin for Stem Cell Adhesion
Published on: May 10, 2020
Nanofibers in a hyaluronan-based pericellular matrix
Debora Gerlach1, Tim Kaminski, Fabián Pérez-Willard
1Institut für Biochemie und Molekularbiologie, Universität Bonn, Nussallee 11, 53115 Bonn, Germany.
Summary
Researchers discovered that thin nanofibers form the oligodendroglial pericellular matrix. These structures are key to brain extracellular matrix organization and may regulate oligodendrocyte development and movement.
Area of Science:
- Neuroscience
- Biochemistry
- Cell Biology
Background:
- The brain's extracellular matrix (ECM) is a complex hyaluronan-based structure crucial for neuronal development and function.
- This matrix plays vital roles in processes like neuronal pathfinding, cell migration, synaptogenesis, and plasticity.
Purpose of the Study:
- To investigate the structural organization of the hyaluronan-rich pericellular matrix surrounding oligodendroglial precursor cells.
- To elucidate the fundamental building blocks of this specialized brain ECM at high resolution.
Main Methods:
- Utilized helium ion beam scanning microscopy for subnanometer resolution imaging.
- Analyzed the pericellular matrix of an oligodendroglial precursor cell line.
Main Results:
- Identified thin nanofibers as the ultimate structural elements of the oligodendroglial pericellular matrix.
- Observed a highly organized supramolecular assembly at the nanoscale.
Conclusions:
- The identified nanofibers are fundamental components of the oligodendroglial ECM.
- These nanostructures likely play a significant role in regulating oligodendroglial maturation and cell motility.
Related Concept Videos
01:42The Extracellular Matrix
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 MatrixThe extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse molecules.
01:29The Extracellular Matrix
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...
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...
01:21Matrix Proteoglycans and Glycoproteins
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...
01:25Fibronectins Connect Cells with ECM
Fibronectin is an adhesive glycoprotein present in the extracellular matrix of embryogenic and adult tissue. These molecules primarily aid in regulating cell motility and attachment. A fibronectin molecule is composed of two identical polypeptide chains attached to each other by a pair of disulfide bonds at the C-terminal.
Both proteoglycans and collagen are attached to fibronectin proteins, which, in turn, are attached to integrin proteins. These integrin proteins interact with transmembrane...
Both proteoglycans and collagen are attached to fibronectin proteins, which, in turn, are attached to integrin proteins. These integrin proteins interact with transmembrane...
01:13Cell-matrix's Response to Mechanical Forces
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...
Anchoring junctions mechanically attach a cell to the...
01:24Overview of Cell-Matrix Interactions
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...