The human neuregulin-2 (NRG2) gene: cloning, mapping and evaluation as a candidate for the autosomal recessive form of Charcot-Marie-Tooth disease linked to 5q.
Neuregulin-2 (NRG2) is a novel member of the neuregulin family of growth and differentiation factors. Through interaction with the ErbB family of receptors, neuregulin-2 induces the growth and differentiation of epithelial, neuronal, glial and other types of cells. In this study, we have cloned the human neuregulin-2 gene, and determined its genomic structure and alternative splicing patterns. By using radiation hybrid mapping panels, the human NRG2 gene was mapped to the D5S658-D5S402 region within 5q23-q33, close to an autosomal recessive form of demyelinating Charcot-Marie-Tooth (CMT) disease. The NRG2 gene was found to be on two yeast artificial chromosomes overlapping the candidate interval and was, thus, considered a good positional candidate for this form of CMT. When the entire neuregulin-2 coding sequence and splice junctions were explored, however, no mutation was identified in one CMT family linked to 5q23-q33. In addition, three intronic single nucleotide polymorphisms were identified in the NRG2 gene. Genotyping in two families localized the NRG2 gene outside of the revised candidate interval between D5S402-D5S210 and excluded NRG2 as the gene responsible for this form of CMT disease.
Ring
H Z
HZ
Department of Genetics, Stanford University School of Medicine, CA 94305, USA.
Chang
H
H
Guilbot
A
A
Brice
A
A
LeGuern
E
E
Francke
U
U
D000328:Adult; D017398:Alternative Splicing; D000595:Amino Acid Sequence; D001483:Base Sequence; D002607:Charcot-Marie-Tooth Disease / Q000235:genetics*; D002874:Chromosome Mapping; D018244:Chromosomes, Artificial, Yeast; D002895:Chromosomes, Human, Pair 5; D005091:Exons; D005260:Female; D015723:Gene Library; D005808:Genes, Recessive; D008040:Genetic Linkage; D005819:Genetic Markers; D006801:Humans; D007438:Introns; D008024:Ligands; D008168:Lung / Q000378:metabolism; D008297:Male; D008969:Molecular Sequence Data; D009414:Nerve Growth Factors / Q000235:genetics*; D010375:Pedigree; D016133:Polymerase Chain Reaction
D005819:Genetic Markers; D008024:Ligands; C106766:NRG2 protein, human; D009414:Nerve Growth Factors