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@ARTICLE{Fleck:136519,
author = {Fleck, Daniel and Garratt, Alistair N and Haass, Christian
and Willem, Michael},
title = {{BACE}1 dependent neuregulin processing: review.},
journal = {Current Alzheimer research},
volume = {9},
number = {2},
issn = {1567-2050},
address = {Hilversum},
publisher = {Bentham Science Publ. Ltd.},
reportid = {DZNE-2020-02841},
pages = {178-183},
year = {2012},
abstract = {Neuregulin-1 (NRG1), known also as heregulin, acetylcholine
receptor inducing activity (ARIA), glial growth factor
(GGF), or sensory and motor neuron derived factor (SMDF),
plays essential roles in several developmental processes,
and is required also later in life. Many variants of NRG1
are produced via alternative splicing and usage of distinct
promoters. All contain an epidermal growth factor (EGF)-like
domain, which alone is sufficient to bind and activate the
cognate receptors, members of the ErbB family. NRG1 mediated
signaling is crucial for cardiogenesis and the development
of the mammary gland and ErbB2 (HER2), an orphan co-receptor
for NRG1 is the target of the drug Herceptin�
(trastuzumab) used for treatment of metastatic breast
cancer. In the nervous system, NRG1 controls the early
development of subpopulations of neural crest cells. In
particular, NRG1 acts as an essential paracrine signaling
molecule expressed on the axonal surface, where it signals
to Schwann cells throughout development and regulates the
thickness of the myelin sheath. NRG1 is required also by
other cell types in the nervous system, for instance as an
axonal signal released by proprioceptive afferents to induce
development of the muscle spindle, and it controls aspects
of cortical interneuron development as well as the formation
of thalamocortical projections. Work from several
laboratories implicates dysregulation of NRG1/ErbB4
signaling in the etiology of schizophrenia. Biochemical
studies have shown that the precursor proteins of NRG1 can
be released from the membrane through limited proteolysis.
In addition, most NRG1 isoforms contain a transmembrane
domain, which is processed by γ-secretase after shedding.
Thereby the intracellular domain is released into the
cytoplasm. Despite this, the importance of NRG1 cleavage for
its functions in vivo remained unclear until recently. β-
Secretase (β-site amyloid precursor protein cleaving enzyme
1, BACE1) was first identified through its function as the
rate limiting enzyme of amyloid-β-peptide (Aβ) production.
Aβ is the major component of amyloid plaques in Alzheimer's
disease (AD). More recently it was shown that Neuregulin-1
is a major physiological substrate of BACE1 during early
postnatal development. Mutant mice lacking BACE1 display
severe hypomyelination of peripheral nerves similar to that
seen in mice lacking NRG1/ErbB signaling in Schwann cells,
and a BACE1-dependent activation of NRG1 in the process of
peripheral myelination was proposed. Here we summarize the
current knowledge about the role of NRG1 proteolysis for
ErbB receptor mediated signaling during development and in
Alzheimer's disease.},
subtyp = {Review Article},
keywords = {Amyloid Precursor Protein Secretases: metabolism / Animals
/ Aspartic Acid Endopeptidases: metabolism / ErbB Receptors:
metabolism / Humans / Mice / Models, Biological /
Neuregulins: genetics / Neuregulins: metabolism / Signal
Transduction: physiology / Neuregulins (NLM Chemicals) /
EGFR protein, human (NLM Chemicals) / ErbB Receptors (NLM
Chemicals) / Amyloid Precursor Protein Secretases (NLM
Chemicals) / Aspartic Acid Endopeptidases (NLM Chemicals) /
BACE1 protein, human (NLM Chemicals)},
cin = {AG Haass old / Ext LMU},
ddc = {610},
cid = {I:(DE-2719)1110007 / I:(DE-2719)5000048},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22455478},
doi = {10.2174/156720512799361637},
url = {https://pub.dzne.de/record/136519},
}