Merlin isoform 2 in neurofibromatosis type 2-associated polyneuropathy
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Merlin isoform 2 in neurofibromatosis type 2-associated polyneuropathy. / Schulz, Alexander; Baader, Stephan L; Niwa-Kawakita, Michiko; Jung, Marie Juliane; Bauer, Reinhard; Garcia, Cynthia; Zoch, Ansgar; Schacke, Stephan; Hagel, Christian; Mautner, Victor-Felix; Hanemann, C Oliver; Dun, Xin-Peng; Parkinson, David B; Weis, Joachim; Schröder, J Michael; Gutmann, David H; Giovannini, Marco; Morrison, Helen.
in: NAT NEUROSCI, Jahrgang 16, Nr. 4, 01.04.2013, S. 426-33.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Merlin isoform 2 in neurofibromatosis type 2-associated polyneuropathy
AU - Schulz, Alexander
AU - Baader, Stephan L
AU - Niwa-Kawakita, Michiko
AU - Jung, Marie Juliane
AU - Bauer, Reinhard
AU - Garcia, Cynthia
AU - Zoch, Ansgar
AU - Schacke, Stephan
AU - Hagel, Christian
AU - Mautner, Victor-Felix
AU - Hanemann, C Oliver
AU - Dun, Xin-Peng
AU - Parkinson, David B
AU - Weis, Joachim
AU - Schröder, J Michael
AU - Gutmann, David H
AU - Giovannini, Marco
AU - Morrison, Helen
PY - 2013/4/1
Y1 - 2013/4/1
N2 - The autosomal dominant disorder neurofibromatosis type 2 (NF2) is a hereditary tumor syndrome caused by inactivation of the NF2 tumor suppressor gene, encoding merlin. Apart from tumors affecting the peripheral and central nervous systems, most NF2 patients develop peripheral neuropathies. This peripheral nerve disease can occur in the absence of nerve-damaging tumors, suggesting an etiology that is independent of gross tumor burden. We discovered that merlin isoform 2 (merlin-iso2) has a specific function in maintaining axonal integrity and propose that reduced axonal NF2 gene dosage leads to NF2-associated polyneuropathy. We identified a merlin-iso2-dependent complex that promotes activation of the GTPase RhoA, enabling downstream Rho-associated kinase to promote neurofilament heavy chain phosphorylation. Merlin-iso2-deficient mice exhibited impaired locomotor capacities, delayed sensory reactions and electrophysiological signs of axonal neuropathy. Sciatic nerves from these mice and sural nerve biopsies from NF2 patients revealed reduced phosphorylation of the neurofilament H subunit, decreased interfilament spacings and irregularly shaped axons.
AB - The autosomal dominant disorder neurofibromatosis type 2 (NF2) is a hereditary tumor syndrome caused by inactivation of the NF2 tumor suppressor gene, encoding merlin. Apart from tumors affecting the peripheral and central nervous systems, most NF2 patients develop peripheral neuropathies. This peripheral nerve disease can occur in the absence of nerve-damaging tumors, suggesting an etiology that is independent of gross tumor burden. We discovered that merlin isoform 2 (merlin-iso2) has a specific function in maintaining axonal integrity and propose that reduced axonal NF2 gene dosage leads to NF2-associated polyneuropathy. We identified a merlin-iso2-dependent complex that promotes activation of the GTPase RhoA, enabling downstream Rho-associated kinase to promote neurofilament heavy chain phosphorylation. Merlin-iso2-deficient mice exhibited impaired locomotor capacities, delayed sensory reactions and electrophysiological signs of axonal neuropathy. Sciatic nerves from these mice and sural nerve biopsies from NF2 patients revealed reduced phosphorylation of the neurofilament H subunit, decreased interfilament spacings and irregularly shaped axons.
KW - Adult
KW - Amino Acid Sequence
KW - Animals
KW - Animals, Newborn
KW - Cell Line, Tumor
KW - Cells, Cultured
KW - Female
KW - Ganglia, Spinal
KW - HEK293 Cells
KW - Humans
KW - Male
KW - Mice
KW - Mice, Inbred C57BL
KW - Mice, Knockout
KW - Middle Aged
KW - Molecular Sequence Data
KW - Neurofibromatosis 2
KW - Neurofibromin 2
KW - Phosphorylation
KW - Polyneuropathies
KW - Pregnancy
KW - Protein Isoforms
U2 - 10.1038/nn.3348
DO - 10.1038/nn.3348
M3 - SCORING: Journal article
C2 - 23455610
VL - 16
SP - 426
EP - 433
JO - NAT NEUROSCI
JF - NAT NEUROSCI
SN - 1097-6256
IS - 4
ER -