Uniaxial cyclic strain stimulates cell proliferation and secretion of interleukin-6 and vascular endothelial growth factor of human dermal fibroblasts seeded on chitosan scaffolds

• Published in: Journal of biomedical materials research. Part A 2014-07, Vol.102 (7), p.2268-2276
• Main Authors: Park, Ki-Sook, Lee, Eun-Gyu, Son, Youngsook
• Format: Article
• Language: English
• Subjects: Base Sequence; Biological and medical sciences; Cell Proliferation; Cells, Cultured; Chitosan; chitosan scaffold; cyclic strain; dermal substitute; DNA Primers; Extracellular Matrix Proteins - metabolism; Fibroblasts - secretion; human dermal fibroblast; Humans; IL-6; Interleukin-6 - secretion; Matrix Metalloproteinase 2 - metabolism; Medical sciences; proliferation; Real-Time Polymerase Chain Reaction; Skin - cytology; Skin - secretion; Stress, Mechanical; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases; Technology. Biomaterials. Equipments; Tissue Scaffolds; Vascular Endothelial Growth Factor A - secretion; VEGF
• ISSN: 1549-3296; 1552-4965
• DOI: 10.1002/jbm.a.34881

Human dermal fibroblasts were inoculated into chitosan sponge scaffolds coated with type I collagen and it might be developed as a dermal substitute and/or dressing material. The application of 14% uniaxial cyclic strain to the cellular scaffolds affected the characteristics of the seeded human dermal fibroblasts. Cyclic strain enhanced cellular proliferation, the activity of metalloproteinase‐2, and the expression of extracellular matrix proteins such as fibronectin. Moreover, cyclic strain increased the expression of vascular endothelial growth factor (VEGF) and interleukin (IL)−6, which are critical to wound healing. Even under static culture (strain, 0%) following 14% cyclic strain, the expression of VEGF and IL‐6, which had increased under 14% strain, was amplified or maintained for at least 3 days. Uniaxial cyclic strain may enhance the wound‐healing potential of human dermal fibroblasts seeded on chitosan scaffolds through the changes in the cellular characteristics of the fibroblasts when the cellular scaffold is transplanted into skin wounds, especially chronic wounds such as diabetic wounds. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 102A: 2268–2276, 2014.