title: Cell chip-based monitoring of toxic effects of cosmetic compounds on skin fibroblast cells.
abstract: The present study estimated the efficacy of electrochemical detection of imidazolidinyl urea-induced cell toxicity in skin human fibroblast cells (HFF cells). The gold nanopunct structures were fabricated through a nanoporous alumina mask, and the structural formations were confirmed via scanning electron microscopy. The HFF cells were allowed to attach to RGD (Arg-Gly-Asp) peptide nanopatterned surfaces, and electrochemical tools were applied to skin cells attached to the chip surface. The HFF cells evidenced inflammation responses to allergens such as imidazolidinyl urea. The cells were subsequently treated with different concentrations of imidazolidinyl urea for 24 h in culture, which induced a change in the cyclic voltammetry (CV) current peak. Treatment with imidazolidinyl urea induced a loss of cell viability and accelerated inflammation in a concentration-dependent manner. The expression level of inflammation-related proteins such as IL-1 beta were increased in imidazolidinyl urea-treated cells. The CV results demonstrated that imidazolidinyl urea significantly reduced the current peaks in a dose-dependent manner. The results showed that the current peak was reduced in accordance with the increases in imidazolidinyl urea-induced inflammation. In conclusion, the results of this study suggest that the electrochemical-based chip provides crucial information for improvements to a cell chip system for drug screening applications.
authors.affiliation: Division of Food Bioscience, Kunkuk University, Chungju, 380-701, Korea. 2Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 121-742, Korea SDepartment of Medical Administration, Daejeon Health Sciences College, Daejeon, 300-711, Korea.
authors.forename: Jeung Hee
authors.initials: JH
authors.lastname: An
authors.forename: Jin-Sung
authors.initials: JS
authors.lastname: Lee
authors.forename: Je-Ran
authors.initials: JR
authors.lastname: Chun
authors.forename: Byung-Keun
authors.initials: BK
authors.lastname: Oh
authors.forename: M D Abdul
authors.initials: MD
authors.lastname: Kafi
authors.forename: Jeong-Woo
authors.initials: JW
authors.lastname: Choi
mesh_terms: D001681:Biological Assay / Q000295:instrumentation*; D002460:Cell Line; D003358:Cosmetics / Q000633:toxicity*; D005347:Fibroblasts / Q000166:cytology / Q000187:drug effects*; D006801:Humans; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation*; D036103:Nanotechnology / Q000295:instrumentation*; D011310:Preservatives, Pharmaceutical / Q000633:toxicity; D012867:Skin / Q000166:cytology / Q000187:drug effects*; D014508:Urea / Q000031:analogs & derivatives* / Q000633:toxicity
chemical_list: D003358:Cosmetics; D011310:Preservatives, Pharmaceutical; D014508:Urea; C006048:imidazolidinyl urea