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Analysis of an alternatively spliced exon of the neurofibromatosis type 1 gene in cultured melanocytes from patients with neurofibromatosis 1

✍ Scribed by Ingrid Eisenbarth; Sven Hoffmeyer; Dieter Kaufmann; Günter Assum; Winfrid Krone

Publisher
Springer-Verlag
Year
1995
Tongue
English
Weight
889 KB
Volume
287
Category
Article
ISSN
0340-3696

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✦ Synopsis

Neurofibromatosis type 1 (NF1) is characterized by clinical features that primarily affect tissues derived from the neural crest (neurofibromas, caf~-aulait macules). Because aberrant regulation of alternative splicing in the NF1 gene transcript may be of functional significance, cultured melanocytes from caffi-aulait macules (CALM), as an example of benign NF1 lesions, were examined for the expression of the different alternative splice products of this gene. Both kinds of NF1 messengers (type 1 and 2) were found not only in CALM melanocytes but also in keratinocytes, fibroblasts and blood cells. Except in blood cells, there was a predominance of the type 2 transcript. Melanocytes from NF1 patients and healthy donors showed similar expression patterns under several culture conditions. Our results suggest that the development of CALM does not correlate with a switch in the ratio of type I to type 2 NF1 messenger RNA.

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