Related Experiment Video
Updated: Jun 3, 2026

Generating a Fractal Microstructure of Laminin-111 to Signal to Cells
Published on: September 28, 2020
Cell behavior on protein matrices containing laminin α1 peptide AG73
Yuji Yamada1, Fumihiko Katagiri, Kentaro Hozumi
1Laboratory of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan.
Abstract:
Collagen has been widely used for tissue engineering. Here, we applied bioactive laminin-derived peptides as an additive for collagen, laminin-111, and fibronectin matrices resulting in peptide/collagen, peptide/laminin-111, and peptide/fibronectin matrices. Several syndecan-binding peptides, including AG73 (RKRLQVQLSIRT), enhanced the cell attachment activity of collagen matrices. AG73 synergistically enhanced not only cell attachment but also cell spreading on collagen matrices. AG73 also enhanced integrin-binding to the collagen matrices, including organization of actin stress fibers and promotion of Tyr397-focal adhesion kinase (FAK) phosphorylation. Additionally, AG73 enhanced neurite outgrowth on collagen matrices. These results suggest that the integrin-mediated biological activity of collagen matrices is synergistically enhanced by the syndecan-mediated cellular function of AG73. Further, cell attachment and spreading activity of laminin-111 and fibronectin matrices was also synergistically enhanced by AG73. The syndecan-binding peptides are useful to enhance the integrin-mediated biological activities of extracellular matrix (ECM) proteins, such as collagen, laminin-111, and fibronectin. The peptide/matrix mixed method is a new concept for biomaterial fabrication and has the potential for wide use in cell and tissue engineering.
More Related Videos
07:50Preparation of Tunable Extracellular Matrix Microenvironments to Evaluate Schwann Cell Phenotype Specification
Published on: June 2, 2020
09:49Light-Induced Molecular Adsorption of Proteins Using the PRIMO System for Micro-Patterning to Study Cell Responses to Extracellular Matrix Proteins
Published on: October 11, 2019
Related Concept Videos
Laminins are the Adhesive Proteins of Basal Lamina
In humans, the five forms of alpha chains are LAMA 1, LAMA 2, LAMA 3, LAMA 4, and LAMA 5. The four forms of beta chains are LAMB 1, LAMB 2, LAMB 3, and LAMB 4. The three forms of gamma...
Overview of Cell-Matrix Interactions
Integrins
Some ECM proteins assemble into a basement membrane to which the remaining components adhere. Proteoglycans typically form the bulk of the ECM while fibrous proteins, like collagen,...
Intracellular Signaling Affects Focal Adhesions
Some...