Multiple nuclear factors bind to novel positive and negative regulatory elements upstream of the human MHC class I gene HLA-A11.

Abstract:

:Quantitative expression of class I genes varies widely in different tissues, during development and in some neoplastic cells. Regulatory DNA sequences controlling levels of transcription of class I genes have been characterized in the murine and swine promoters. Although some regulatory features appear to be retained in humans, most of them are not evolutionary conserved. In this study, we identify novel DNA sequences and factors which contribute to the regulation of the human HLA-A11 gene. Two activator elements (-155 to -91 and -335 to -206) and one negative element (-172 to -156), distinct from those previously described are mapped within 335 bp upstream of exon 1 of the human HLA-A11 gene. Various nuclear factors bind to these regulatory elements, some of which are cell restricted or interact with evolutionary divergent regulatory sequences of the human class I gene promoter. Two of the five DNA-binding sites characterized in this work bind at least two proteins which compete for the occupancy of their site. The identification of these new regulatory elements provides a more comprehensive basis for the understanding of physiological or pathological modulation of MHC class I transcription in humans.

journal_name

Int Immunol

journal_title

International immunology

authors

Blanchet O,Gazin C,L'Haridon M,Tatari Z,Degos L,Sigaux F,Paul P

doi

10.1093/intimm/6.10.1485

subject

Has Abstract

pub_date

1994-10-01 00:00:00

pages

1485-96

issue

10

eissn

0953-8178

issn

1460-2377

journal_volume

6

pub_type

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