title: Uniaxial cyclic strain stimulates cell proliferation and secretion of interleukin-6 and vascular endothelial growth factor of human dermal fibroblasts seeded on chitosan scaffolds.
abstract: 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.
authors.affiliation: Department of Genetic Engineering, College of Life Science and Graduate School of Biotechnology, Kyung Hee University, Kiheung-ku, Yong In, 441-701, Korea.
authors.forename: Ki-Sook
authors.initials: KS
authors.lastname: Park
authors.forename: Eun-Gyu
authors.initials: EG
authors.lastname: Lee
authors.forename: Youngsook
authors.initials: Y
authors.lastname: Son
mesh_terms: D001483:Base Sequence; D049109:Cell Proliferation; D002478:Cells, Cultured; D048271:Chitosan; D017931:DNA Primers; D016326:Extracellular Matrix Proteins / Q000378:metabolism; D005347:Fibroblasts / Q000378:metabolism; D006801:Humans; D015850:Interleukin-6 / Q000378:metabolism*; D020778:Matrix Metalloproteinase 2 / Q000378:metabolism; D060888:Real-Time Polymerase Chain Reaction; D012867:Skin / Q000166:cytology / Q000378:metabolism*; D013314:Stress, Mechanical; D054457:Tissue Scaffolds; D042461:Vascular Endothelial Growth Factor A / Q000378:metabolism*
chemical_list: D017931:DNA Primers; D016326:Extracellular Matrix Proteins; D015850:Interleukin-6; D042461:Vascular Endothelial Growth Factor A; D048271:Chitosan; D020778:Matrix Metalloproteinase 2
keywords: IL-6; VEGF; chitosan scaffold; cyclic strain; dermal substitute; human dermal fibroblast; proliferation