Tuberc Respir Dis.  1998 Oct;45(5):984-991.

Expression of the FHIT gene Located in Chromosome 3p14.2 in Human Lung Cancer Cell Lines

• Kim CH
• Yoo CG
• Lee CT
• Han SK
• Shim YS
• Kim YW

Abstract

BACKGROUND: The 3p deletions has been shown to be the most frequent alteration in lung cancers, strongly suggesting the presence of at least one tumor suppressor gene in this chromosomal region. However, no solid candidate for the tumor suppressor gene(s) on 3p has as yet been identified. Recent attention has focused on a candidate 3p14.2 tumor suppressor gene, FHIT, which is located in a .region that is homozygously deleted in multiple tumor cell lines and disrupted by the hereditary renal cell carcinoma t(3;8) chromosomal translocation breakpoint FHIT also spans FRA3B, the most common fragile sites in the human genome. In the present study, we have analyzed expression of the FHIT gene in lung cancer cell lines.
METHODS
RNA from 21 lung cancer cell lines (16 NSCLC, 5 SCLC) were extracted using standard procedures. Random-primed, first strand CDNAS were synthesized from total RNA and PCR amplication of coding exons 5 to 9 was performed. The RT-PCR products were electrophoresed in 1.5% ethidium bromide-stained agarose gels.
RESULTS
12 of 21(57%) lung cancer cell lines exhibited absent or aberrant FHIT expression [7 of 16(44%) of non-small cell lung cancer and 5 of 5(100%) of small cell lung cancer cell lines].
CONCLUSION
The result shows that abnormal transcription of the FHIT gene is common in human lung cancer cell lines, especially in small cell lung cancer.

Keyword

Chromosome 3p14.2; Lung cancer; FHIT

MeSH Terms

Carcinoma, Non-Small-Cell Lung
Carcinoma, Renal Cell
Cell Line*
Cell Line, Tumor
Clinical Coding
DNA, Complementary
Ethidium
Exons
Gels
Genes, Tumor Suppressor
Genome, Human
Humans*
Lung Neoplasms*
Lung*
Polymerase Chain Reaction
RNA
Sepharose
Small Cell Lung Carcinoma
Translocation, Genetic
DNA, Complementary
Ethidium
Gels
RNA
Sepharose