Limited Unfolded Protein Response and Inflammation in Neuroserpinopathy
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Limited Unfolded Protein Response and Inflammation in Neuroserpinopathy. / López-González, Irene; Pérez-Mediavilla, Alberto; Zamarbide, Marta; Carmona, Margarita; Torrejón Escribano, Benjamin; Glatzel, Markus; Galliciotti, Giovanna; Ferrer, Isidre.
in: J NEUROPATH EXP NEUR, Jahrgang 75, Nr. 2, 02.2016, S. 121-33.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Limited Unfolded Protein Response and Inflammation in Neuroserpinopathy
AU - López-González, Irene
AU - Pérez-Mediavilla, Alberto
AU - Zamarbide, Marta
AU - Carmona, Margarita
AU - Torrejón Escribano, Benjamin
AU - Glatzel, Markus
AU - Galliciotti, Giovanna
AU - Ferrer, Isidre
N1 - © 2016 American Association of Neuropathologists, Inc. All rights reserved.
PY - 2016/2
Y1 - 2016/2
N2 - Familial encephalopathy with neuroserpin inclusion bodies (FENIB) is a rare disease characterized by the deposition of multiple intracytoplasmic neuronal inclusions that contain mutated neuroserpin. Tg-Syracuse (Tg-Syr) mice express Ser49Pro mutated neuroserpin and develop clinical and neuropathological features of human FENIB. We used 8-, 34-, 45- and 80-week-old Tg-Syr mice to characterize neuroinflammation and the unfolded protein response (UPR) in a neurodegenerative disease in which abnormal protein aggregates accumulate within the endoplasmic reticulum (ER). There were scattered neuroserpin inclusions in Tg-Syr mice at 8 weeks of age; the numbers of neurons involved and the amount of neuroserpin per neuron increased with age throughout the CNS to 80 weeks of age; no similar inclusions were found in wild type (Tg-WT) mice at any age. Increases in numbers of astrocytes and microglia occurred at advanced disease stages. Among 22 markers in 80-week-old Tg-Syr mice, only II1b and II10rb mRNAs in the somatosensory cortex and CxCl10 and Il10rb mRNAs in the olfactory bulb were upregulated when compared with Tg-WT mice indicating a limited relationship between neuroserpin inclusions and inflammatory responses. The changes were accompanied by a transient increase in expression of Xbp1 spliced at 45 weeks and increased ERdJ4 mRNAs at 80 weeks. The sequestration of UPR activators GRP78 and GRP94 in neuroserpin inclusions might explain the limited UPR responses despite the accumulation of neuroserpin in the ER in this FENIB mouse model.
AB - Familial encephalopathy with neuroserpin inclusion bodies (FENIB) is a rare disease characterized by the deposition of multiple intracytoplasmic neuronal inclusions that contain mutated neuroserpin. Tg-Syracuse (Tg-Syr) mice express Ser49Pro mutated neuroserpin and develop clinical and neuropathological features of human FENIB. We used 8-, 34-, 45- and 80-week-old Tg-Syr mice to characterize neuroinflammation and the unfolded protein response (UPR) in a neurodegenerative disease in which abnormal protein aggregates accumulate within the endoplasmic reticulum (ER). There were scattered neuroserpin inclusions in Tg-Syr mice at 8 weeks of age; the numbers of neurons involved and the amount of neuroserpin per neuron increased with age throughout the CNS to 80 weeks of age; no similar inclusions were found in wild type (Tg-WT) mice at any age. Increases in numbers of astrocytes and microglia occurred at advanced disease stages. Among 22 markers in 80-week-old Tg-Syr mice, only II1b and II10rb mRNAs in the somatosensory cortex and CxCl10 and Il10rb mRNAs in the olfactory bulb were upregulated when compared with Tg-WT mice indicating a limited relationship between neuroserpin inclusions and inflammatory responses. The changes were accompanied by a transient increase in expression of Xbp1 spliced at 45 weeks and increased ERdJ4 mRNAs at 80 weeks. The sequestration of UPR activators GRP78 and GRP94 in neuroserpin inclusions might explain the limited UPR responses despite the accumulation of neuroserpin in the ER in this FENIB mouse model.
U2 - 10.1093/jnen/nlv011
DO - 10.1093/jnen/nlv011
M3 - SCORING: Journal article
C2 - 26733586
VL - 75
SP - 121
EP - 133
JO - J NEUROPATH EXP NEUR
JF - J NEUROPATH EXP NEUR
SN - 0022-3069
IS - 2
ER -