The MTT assays of bovine retinal pericytes and human microvascular endothelial cells on DLC and Si-DLC-coated TCPS

TIT Okpalugo, E McKenna, AC Magee, JAD McLaughlin, NMD Brown

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

MTT (Tetrazolium)-assay suggests that diamond-like carbon (DLC) and silicon-doped DLC (Si-DLC) films obtained under appropriate deposition parameters are not toxic to bovine retinal pericytes, and human microvascular endothelial cells (HMEC). The observed frequency distributions of the optical density (OD) values indicative of cell viability are near Gaussian-normal distribution. One-way ANOVA indicates that at 0.05 levels the population means are not significantly different for the coated and control samples. The observed OD values depend on the cell line (cell growth/metabolic rate), possibly cell cycle stage, the deposition parameters-bias voltage, ion energy, pressure, argon precleaning, and the dopant. For colored thin films like DLC with room temperature photoconductivity and photoelectric effects, it is important to account for the OD contribution from the coating itself. MTT assay, not surprisingly, seems not to be highly sensitive to interfacial cellular interaction resulting from the change in the film's nanostructure, because the tetrazolium metabolism is mainly intracellular and not interfacial. The thin films were synthesized by 13.56 MHz RF-PECVD using argon and acetylene as source gases, with tetramethylsilane (TMS) vapor introduced for silicon doping. This study could be relevant to biomedical application of the films in the eye, peri-vascular, vascular compartments, and for cell-tissue engineering. © 2004 Wiley Periodicals, Inc. J Biomed Mater Res 71A: 201-208, 2004
LanguageEnglish
Pages201-208
JournalJournal of Biomedical Materials Research
Volume71A
Issue number2
DOIs
Publication statusPublished - 2004

Fingerprint

Diamond
Density (optical)
Endothelial cells
Silicon
Assays
Diamonds
Carbon
Argon
Cells
Cell engineering
Doping (additives)
Photoelectricity
Thin films
Acetylene
Diamond like carbon films
Poisons
Photoconductivity
Cell growth
Normal distribution
Plasma enhanced chemical vapor deposition

Keywords

  • Si-DLC • MTT assay • optical density • pericytes • endothelial cell

Cite this

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title = "The MTT assays of bovine retinal pericytes and human microvascular endothelial cells on DLC and Si-DLC-coated TCPS",
abstract = "MTT (Tetrazolium)-assay suggests that diamond-like carbon (DLC) and silicon-doped DLC (Si-DLC) films obtained under appropriate deposition parameters are not toxic to bovine retinal pericytes, and human microvascular endothelial cells (HMEC). The observed frequency distributions of the optical density (OD) values indicative of cell viability are near Gaussian-normal distribution. One-way ANOVA indicates that at 0.05 levels the population means are not significantly different for the coated and control samples. The observed OD values depend on the cell line (cell growth/metabolic rate), possibly cell cycle stage, the deposition parameters-bias voltage, ion energy, pressure, argon precleaning, and the dopant. For colored thin films like DLC with room temperature photoconductivity and photoelectric effects, it is important to account for the OD contribution from the coating itself. MTT assay, not surprisingly, seems not to be highly sensitive to interfacial cellular interaction resulting from the change in the film's nanostructure, because the tetrazolium metabolism is mainly intracellular and not interfacial. The thin films were synthesized by 13.56 MHz RF-PECVD using argon and acetylene as source gases, with tetramethylsilane (TMS) vapor introduced for silicon doping. This study could be relevant to biomedical application of the films in the eye, peri-vascular, vascular compartments, and for cell-tissue engineering. {\circledC} 2004 Wiley Periodicals, Inc. J Biomed Mater Res 71A: 201-208, 2004",
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The MTT assays of bovine retinal pericytes and human microvascular endothelial cells on DLC and Si-DLC-coated TCPS. / Okpalugo, TIT; McKenna, E; Magee, AC; McLaughlin, JAD; Brown, NMD.

In: Journal of Biomedical Materials Research, Vol. 71A, No. 2, 2004, p. 201-208.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The MTT assays of bovine retinal pericytes and human microvascular endothelial cells on DLC and Si-DLC-coated TCPS

AU - Okpalugo, TIT

AU - McKenna, E

AU - Magee, AC

AU - McLaughlin, JAD

AU - Brown, NMD

PY - 2004

Y1 - 2004

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