Different consequences of EGR2 mutants on the transactivation of human Cx32 promoter

Marco Musso, Piercesare Balestra, Franco Taroni, Emilia Bellone, Paola Mandich

Research output: Contribution to journalArticle

Abstract

The early growth response 2 (EGR2) transcription factor plays a crucial role in peripheral nerve myelination. Mutations of this gene are associated with a wide variety of demyelinating neuropathies differing from each other in the severity of nerve injury. Although the expression of EGR2 mutants inhibits the transactivation of myelin gene promoters, the exact molecular mechanism by which these mutations cause the alteration of the myelination process is still unknown. Recently, it was reported that EGR2 is directly involved in the transcriptional regulation of Connexin 32, a myelin gene frequently mutated in peripheral neuropathies. Here we describe the differential effect of two EGR2 mutants; while mutant D355V partially induces Cx32 promoter, mutant R381H does not. Furthermore, we show that a sequence located at -216, recognized by the wild-type and the mutant D355V recombinant proteins, is relevant for promoter transactivation.

Original languageEnglish
Pages (from-to)89-95
Number of pages7
JournalNeurobiology of Disease
Volume12
Issue number1
DOIs
Publication statusPublished - Feb 2003

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ASJC Scopus subject areas

  • Neurology

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