Enhancer function of a 53-bp repetitive element in the 5’ flanking region of the human neutrophil elastase gene

Kunihiko Yoshimura, Chin Shyan Chu, Ronald Crystal

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Expression of the human neutrophil elastase (NE) gene is limited to the early stage of myeloid cell differentiation in bone-marrow cells. While NE gene expressions controlled mainly at the transcriptional level during bone marrow cell differentiation, the mechanism of transcriptional control is not fully understood. One motif of interest in the 5' flanking region of the gene is the six tandem repeats of a 53-bp nucleotide sequence (REP53) containing a potential binding site for a basic helix-loop-helix protein located at -1032 to -716. The REP53 sequence can function as a non-cell specific transcriptional enhancer which is capable of augmenting heterologous promoter activity. When the single REP53 element was inserted into the pAZ1037 chloramphenicol acetyltransferase (CAT) expression vector immediately upstream of the chicken β-actin promoter in either normal or inverted orientation and used to transfect K-562 erythroleukemia or HeLa cervical carcinoma cells, these modified vectors achieved 2 to 3-fold higher CAT activity than the parental pAZ1037 vector irrespective of orientation of the REP53.

Original languageEnglish
Pages (from-to)38-42
Number of pages5
JournalBiochemical and Biophysical Research Communications
Volume204
Issue number1
DOIs
Publication statusPublished - 15 Oct 1994
Externally publishedYes

Fingerprint

Leukocyte Elastase
Chloramphenicol O-Acetyltransferase
5' Flanking Region
Bone Marrow Cells
Cell Differentiation
Genes
Cells
Leukemia, Erythroblastic, Acute
Tandem Repeat Sequences
Bone
Myeloid Cells
Actins
Chickens
Binding Sites
Carcinoma
Gene Expression
Gene expression
Nucleotides
Proteins

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Enhancer function of a 53-bp repetitive element in the 5’ flanking region of the human neutrophil elastase gene. / Yoshimura, Kunihiko; Chu, Chin Shyan; Crystal, Ronald.

In: Biochemical and Biophysical Research Communications, Vol. 204, No. 1, 15.10.1994, p. 38-42.

Research output: Contribution to journalArticle

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