Korean J Otolaryngol-Head Neck Surg.  1998 Feb;41(2):232-237.

Cytogenetic Studies of High Dose EGF Treated KUMA3 Cell Clone

• Chae HS
• Song DW
• Jeong HS
• Kim HJ
• Hong CE
• Ahn BH
• Choi IJ

Abstract

BACKGROUND AND OBJECTIVES: Epidermal growth factor (EGF), directly stimulates epidermal growth and differentiation. The combination of EGFR activation and genetic alternations may lead to neoplasia and metaplasia. To study the change of chromosomal number and the aberrations of chromosomal structure of KUMA3 cell line treated with high dose EGF.
MATERIALS AND METHODS
The high dose EGF treated cell clones were obtained from KUMA3 cell line which was established from squamous cell carcinoma of the lower lip by culturing cells in medium containing high dose EGF for 6 months. The chromosomal analysis and subculture were performed at subsequent passage of 1 month interval.
RESULTS
In high dose EGF treated cell clones, there was no apparent change in chromosomal number, but the ratio of the number of chromosome 7 to mode chromosome number was similar to normal value (0.043). The new chromosomal structural aberrations appeared first from 30 passage of IR-200 cell clone. The chromosomal aberrations were del(1)(q23-->qter) and del(4)t(1:4)(1qter-->1q23: : 4p16-->4qter).
CONCLUSION
There was no change in chromosomal number, but the ratio of the number of chromosome 7 to mode chromosome number was similar to normal value (0.043), and the new chromosomal structural aberrations were appeared.

Keyword

EGF; KUMA3 cell clone; Squamous cell carcinoma; Chromosomal aberrations

MeSH Terms

Carcinoma, Squamous Cell
Cell Line
Chromosome Aberrations
Chromosomes, Human, Pair 7
Clone Cells*
Cytogenetics*
Epidermal Growth Factor*
Lip
Metaplasia
Reference Values
Epidermal Growth Factor