Abstract
The calcitonin/alpha-CGRP (CT/CGRP) gene is ectopically expressed in a wide variety of neoplasia. We have investigated the molecular mechanisms responsible for this ectopic expression in the human cell line BEN, which is derived from a poorly differentiated squamous cell lung carcinoma. We show that a trans-acting factor which represses expression of the CT/CGRP gene in HeLa cells is absent or inactive in BEN cells, and have localised the repressor binding site to a 53 bp fragment 1500 bp upstream of the transcription start site.
| Original language | English |
|---|---|
| Pages (from-to) | 229-33 |
| Number of pages | 5 |
| Journal | FEBS Letters |
| Volume | 306 |
| Issue number | 2-3 |
| DOIs | |
| State | Published - 20 Jul 1992 |
Keywords
- Base Sequence
- Binding Sites
- Calcitonin Gene-Related Peptide/genetics
- Carcinoma, Squamous Cell/genetics
- DNA, Neoplasm/metabolism
- Gene Expression Regulation, Neoplastic
- HeLa Cells
- Humans
- Lung Neoplasms/genetics
- Molecular Sequence Data
- Repressor Proteins/metabolism
- Restriction Mapping
- Transcription, Genetic
- Transfection
- Tumor Cells, Cultured