A novel approach to analysis of transcriptional regulation in human cells: Initial application to melanocytes and melanoma cells

James M Grichnik, Barbara A. Gilchrest

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An assay system for transcriptional profile analysis of cultured eukaryotic cells has been developed to simultaneously handle multiple samples in a rapid, sensitive, and internally controlled manner. The methodology incorporates a microtiter plate assay system, a rapid cell-harvest enzyme-assay technique, and the bacterial reporter genes β-glucuronidase and β-galactosidase. We demonstrate, using β-actin and SV40 (late) transcription promoting sequences, that this technically refined microtiter-triton-lysate (MTL) assay methodology can readily differentiate between the transcriptional states of human melanocytes before and after pharmacologic stimulation and malignantly transformed versus normal cell environments. Differences in the transcriptional environments are revealed by the relative expression of transcription element probes. The transcriptional activity ratio of the β-actin compared to the SV40 late transcription promoting sequences was approximately 1:2 in primary cultured melanocytes, 2: 1 in 12-0-tetradecanoyl phorbol-13-acetate (TPA)-treated melanocytes and 1:4 in the Tang melanoma cell line. Because this MTL assay methodology can accommodate a panel of transcription element probes, we anticipate that the resultant transcriptional profiles will prove useful in deciphering the diverse transcriptional changes that occur within normally regulated and malignantly transformed cells.

Original languageEnglish
Pages (from-to)742-746
Number of pages5
JournalJournal of Investigative Dermatology
Volume96
Issue number5
StatePublished - May 1 1991
Externally publishedYes

Fingerprint

Melanocytes
Melanoma
Assays
Transcription
Cells
Actins
Galactosidases
Bacterial Genes
Glucuronidase
Enzyme Assays
Eukaryotic Cells
Reporter Genes
Cultured Cells
Acetates
Cell Line
Genes
Enzymes

ASJC Scopus subject areas

  • Dermatology

Cite this

A novel approach to analysis of transcriptional regulation in human cells : Initial application to melanocytes and melanoma cells. / Grichnik, James M; Gilchrest, Barbara A.

In: Journal of Investigative Dermatology, Vol. 96, No. 5, 01.05.1991, p. 742-746.

Research output: Contribution to journalArticle

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