Biomaterial Database

Effects of TGF-beta and TGF-beta-neutralizing antibody on normal skin fibroblasts and scar-derived fibroblasts. 2002

Toshihiko Yamauchi

Department of Plastic and Reconstruction Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan.

Transforming growth factor-beta (TGF-beta) is known as an important cytokine for scar formation in wound healing. The purpose of the present study was to investigate the effects of TGF-beta and its neutralizing antibody on normal skin fibroblasts and scar-derived fibroblasts in culture. Endogenous TGF-beta levels were similar in all fibroblasts. Cell proliferation increased when TGF-beta 1 or beta 2 was added to the cultures, and the increase was higher and started at a lower level in the scar-derived fibroblasts (p < 0.05). The increase of fibroblasts was suppressed by the addition of TGF-beta-neutralizing antibody to the cultures, and the suppression rate was higher in the scar-derived cells (p < 0.05). Percentages of the cells in the growth phases of cell cycle decreased in the normal skin fibroblasts (p < 0.05) when TGF-beta-neutralizing antibody was added. Our findings showed that scar-derived fibroblasts and normal skin fibroblasts have a different sensitivity to TGF-beta. Further study is needed on the effect of the neutralizing antibody to the cell counts and cell cycle of scar-derived fibroblasts.

UI	MeSH Term	Description	Entries
D009500	Neutralization Tests	The measurement of infection-blocking titer of ANTISERA by testing a series of dilutions for a given virus-antiserum interaction end-point, which is generally the dilution at which tissue cultures inoculated with the serum-virus mixtures demonstrate cytopathology (CPE) or the dilution at which 50% of test animals injected with serum-virus mixtures show infectivity (ID50) or die (LD50).	Neutralization Test,Test, Neutralization,Tests, Neutralization
D002453	Cell Cycle	The complex series of phenomena, occurring between the end of one CELL DIVISION and the end of the next, by which cellular material is duplicated and then divided between two daughter cells. The cell cycle includes INTERPHASE, which includes G0 PHASE; G1 PHASE; S PHASE; and G2 PHASE, and CELL DIVISION PHASE.	Cell Division Cycle,Cell Cycles,Cell Division Cycles,Cycle, Cell,Cycle, Cell Division,Cycles, Cell,Cycles, Cell Division,Division Cycle, Cell,Division Cycles, Cell
D002455	Cell Division	The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION.	M Phase,Cell Division Phase,Cell Divisions,Division Phase, Cell,Division, Cell,Divisions, Cell,M Phases,Phase, Cell Division,Phase, M,Phases, M
D002478	Cells, Cultured	Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.	Cultured Cells,Cell, Cultured,Cultured Cell
D002921	Cicatrix	The fibrous tissue that replaces normal tissue during the process of WOUND HEALING.	Scars,Cicatrization,Scar,Scarring
D005347	Fibroblasts	Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules.	Fibroblast
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012867	Skin	The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.
D016212	Transforming Growth Factor beta	A factor synthesized in a wide variety of tissues. It acts synergistically with TGF-alpha in inducing phenotypic transformation and can also act as a negative autocrine growth factor. TGF-beta has a potential role in embryonal development, cellular differentiation, hormone secretion, and immune function. TGF-beta is found mostly as homodimer forms of separate gene products TGF-beta1, TGF-beta2 or TGF-beta3. Heterodimers composed of TGF-beta1 and 2 (TGF-beta1.2) or of TGF-beta2 and 3 (TGF-beta2.3) have been isolated. The TGF-beta proteins are synthesized as precursor proteins.	Bone-Derived Transforming Growth Factor,Platelet Transforming Growth Factor,TGF-beta,Milk Growth Factor,TGFbeta,Bone Derived Transforming Growth Factor,Factor, Milk Growth,Growth Factor, Milk