Concomitant oncoprotein detection with fluorescence in situ hybridization (CODFISH): A fluorescence-based assay enabling simultaneous visualization of gene amplification and encoded protein expression

Raymond R. Tubbs, James Pettay, Pat Roche, Mark H. Stoler, Robert Brian Jenkins, Jon Myles, Thomas Grogan

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We sought the validation of a three-color fluorescence-based system that simultaneously profiles Her2/neu oncogene copy by fluorescence in situ hybridization (FISH) and Her-2/neu encoded protein by the use of a versatile alkaline phosphatase chromogen fast red K in either fluorescence or bright-field mode. Nuclei were counterstained with DAPI. Nineteen infiltrating ductal carcinomas of breast were comprehensively evaluated for Her-2/neu amplification/over-expression by direct and indirect FISH using digoxigenin (DigFISH) and direct fluorescently labeled probes, autoradiographic RNA:RNA in situ hybridization, and immunohistochemistry using monoclonal antibody CB11. CODFISH results correlated well with DigFISH, direct-label FISH, mRNA expression, and oncoprotein expression as assessed with CB11, and enabled simultaneous visualization of gene copy and protein. In addition, qualitative immunohistochemistry may be followed by CODFISH gene copy enumeration to clarify ambiguous cases.

Original languageEnglish (US)
Pages (from-to)78-83
Number of pages6
JournalJournal of Molecular Diagnostics
Volume2
Issue number2
StatePublished - May 2000

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Gene Amplification
Oncogene Proteins
Fluorescence In Situ Hybridization
Fluorescence
Proteins
Immunohistochemistry
Carcinoma, Ductal, Breast
RNA Probes
Digoxigenin
Oncogenes
In Situ Hybridization
Alkaline Phosphatase
Color
Monoclonal Antibodies
RNA
Messenger RNA
Genes

ASJC Scopus subject areas

  • Molecular Biology

Cite this

Concomitant oncoprotein detection with fluorescence in situ hybridization (CODFISH) : A fluorescence-based assay enabling simultaneous visualization of gene amplification and encoded protein expression. / Tubbs, Raymond R.; Pettay, James; Roche, Pat; Stoler, Mark H.; Jenkins, Robert Brian; Myles, Jon; Grogan, Thomas.

In: Journal of Molecular Diagnostics, Vol. 2, No. 2, 05.2000, p. 78-83.

Research output: Contribution to journalArticle

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