Constitutive Dyrk1A is abnormally expressed in Alzheimer disease, Down syndrome, Pick disease, and related transgenic models
Standard
Constitutive Dyrk1A is abnormally expressed in Alzheimer disease, Down syndrome, Pick disease, and related transgenic models. / Ferrer, Isidro; Barrachina, Marta; Puig, Berta; Martínez de Lagrán, M; Martí, Eulalia; Avila, Jesús; Dierssen, Mara; Puig Martorell, Berta.
in: NEUROBIOL DIS, Jahrgang 20, Nr. 2, 01.11.2005, S. 392-400.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - Constitutive Dyrk1A is abnormally expressed in Alzheimer disease, Down syndrome, Pick disease, and related transgenic models
AU - Ferrer, Isidro
AU - Barrachina, Marta
AU - Puig, Berta
AU - Martínez de Lagrán, M
AU - Martí, Eulalia
AU - Avila, Jesús
AU - Dierssen, Mara
AU - Puig Martorell, Berta
PY - 2005/11/1
Y1 - 2005/11/1
N2 - DYRK1A, dual-specificity tyrosine-regulated kinase 1A, maps to human chromosome 21 within the Down syndrome (DS) critical region. Dyrk1 phosphorylates the human microtubule-associated protein tau at Thr212 in vitro, a residue that is phosphorylated in fetal tau and hyper-phosphorylated in Alzheimer disease (AD) and tauopathies, including Pick disease (PiD). Furthermore, phosphorylation of Thr212 primes tau for phosphorylation by glycogen synthase kinase 3 (GSK-3). The present study examines Dyrk1A in the cerebral cortex of sporadic AD, adult DS with associated AD, and PiD. Increased Dyrk1A immunoreactivity has been found in the cytoplasm and nuclei of scattered neurons of the neocortex, entorhinal cortex, and hippocampus in AD, DS, and PiD. Dyrk1A is found in sarkosyl-insoluble fractions which are enriched in phosphorylated tau in AD brains, thus suggesting a possible association of Dyrk1A with neurofibrillary tangle pathology. Yet, no clear relationship has been observed between tau phosphorylation at Thr212, and GSK-3 and Dyrk1A expression in diseased brains. Transgenic mice bearing a triple tau mutation (G272V, P301L, and R406W) and expressing hyper-phosphoyrylated tau in neurons of the entorhinal cortex, hippocampus, and cerebral neocortex show increased expression of Dyrk1A in individual neurons in the same regions. However, transgenic mice over-expressing Dyrk1A do not show increased phosphorylation of tau at Thr212, thus suggesting that Dyrk1A over-expression does not trigger per se hyper-phosphorylation of tau at Thr212 in vivo. The present observations indicate modifications in the expression of constitutive Dyrk1A in the cytoplasm and nuclei of neurons in various neurodegenerative diseases associated with tau phosphorylation.
AB - DYRK1A, dual-specificity tyrosine-regulated kinase 1A, maps to human chromosome 21 within the Down syndrome (DS) critical region. Dyrk1 phosphorylates the human microtubule-associated protein tau at Thr212 in vitro, a residue that is phosphorylated in fetal tau and hyper-phosphorylated in Alzheimer disease (AD) and tauopathies, including Pick disease (PiD). Furthermore, phosphorylation of Thr212 primes tau for phosphorylation by glycogen synthase kinase 3 (GSK-3). The present study examines Dyrk1A in the cerebral cortex of sporadic AD, adult DS with associated AD, and PiD. Increased Dyrk1A immunoreactivity has been found in the cytoplasm and nuclei of scattered neurons of the neocortex, entorhinal cortex, and hippocampus in AD, DS, and PiD. Dyrk1A is found in sarkosyl-insoluble fractions which are enriched in phosphorylated tau in AD brains, thus suggesting a possible association of Dyrk1A with neurofibrillary tangle pathology. Yet, no clear relationship has been observed between tau phosphorylation at Thr212, and GSK-3 and Dyrk1A expression in diseased brains. Transgenic mice bearing a triple tau mutation (G272V, P301L, and R406W) and expressing hyper-phosphoyrylated tau in neurons of the entorhinal cortex, hippocampus, and cerebral neocortex show increased expression of Dyrk1A in individual neurons in the same regions. However, transgenic mice over-expressing Dyrk1A do not show increased phosphorylation of tau at Thr212, thus suggesting that Dyrk1A over-expression does not trigger per se hyper-phosphorylation of tau at Thr212 in vivo. The present observations indicate modifications in the expression of constitutive Dyrk1A in the cytoplasm and nuclei of neurons in various neurodegenerative diseases associated with tau phosphorylation.
KW - Adult
KW - Aged
KW - Aged, 80 and over
KW - Alzheimer Disease
KW - Animals
KW - Cell Nucleus
KW - Cerebral Cortex
KW - Cytoplasm
KW - Disease Models, Animal
KW - Down Syndrome
KW - Entorhinal Cortex
KW - Female
KW - Hippocampus
KW - Humans
KW - Immunohistochemistry
KW - Male
KW - Mice
KW - Mice, Transgenic
KW - Middle Aged
KW - Neurons
KW - Phosphorylation
KW - Pick Disease of the Brain
KW - Protein-Serine-Threonine Kinases
KW - Protein-Tyrosine Kinases
KW - tau Proteins
U2 - 10.1016/j.nbd.2005.03.020
DO - 10.1016/j.nbd.2005.03.020
M3 - SCORING: Journal article
C2 - 16242644
VL - 20
SP - 392
EP - 400
JO - NEUROBIOL DIS
JF - NEUROBIOL DIS
SN - 0969-9961
IS - 2
ER -