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Astrocyte-derived Jagged-1 mitigates deleterious Notch signaling in amyotrophic lateral sclerosis
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- Annelies, Nonneman (författare)
- KU Leuven Univ Leuven, Dept Neurosci, Lab Neurobiol & Expt Neurol, Herestr 49, B-3000 Leuven, Belgium.;LBI, Herestr 49, B-3000 Leuven, Belgium.;Ctr Brain & Dis Res, VIB, Herestr 49, B-3000 Leuven, Belgium.
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- Nathan, Criem (författare)
- Ctr Brain & Dis Res, VIB, Herestr 49, B-3000 Leuven, Belgium.;KU Leuven Univ Leuven, Dept Cardiovasc Sci, Ctr Mol & Vasc Biol, Herestr 49, B-3000 Leuven, Belgium.;KU Leuven Univ Leuven, Dept Human Genet, Herestr 49, B-3000 Leuven, Belgium.
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- Lewandowski, Sebastian (författare)
- Karolinska Institutet,KTH,Affinitets-proteomik,Science for Life Laboratory, SciLifeLab,Karolinska Inst, Dept Clin Neurosci, S-17177 Stockholm, Sweden.
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- KU Leuven Univ Leuven, Dept Neurosci, Lab Neurobiol & Expt Neurol, Herestr 49, B-3000 Leuven, Belgium;LBI, Herestr 49, B-3000 Leuven, Belgium.;Ctr Brain & Dis Res, VIB, Herestr 49, B-3000 Leuven, Belgium. Ctr Brain & Dis Res, VIB, Herestr 49, B-3000 Leuven, Belgium.;KU Leuven Univ Leuven, Dept Cardiovasc Sci, Ctr Mol & Vasc Biol, Herestr 49, B-3000 Leuven, Belgium.;KU Leuven Univ Leuven, Dept Human Genet, Herestr 49, B-3000 Leuven, Belgium. (creator_code:org_t)
- Academic Press, 2018
- 2018
- Engelska.
- Ingår i: Neurobiology of Disease. - : Academic Press. - 0969-9961 .- 1095-953X. ; 119, s. 26-40
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Amyotrophic lateral sclerosis (ALS) is a late-onset devastating degenerative disease mainly affecting motor neurons. Motor neuron degeneration is accompanied and aggravated by oligodendroglial pathology and the presence of reactive astrocytes and microglia. We studied the role of the Notch signaling pathway in ALS, as it is implicated in several processes that may contribute to this disease, including axonal retraction, microgliosis, astrocytosis, oligodendrocyte precursor cell proliferation and differentiation, and cell death. We observed abnormal activation of the Notch signaling pathway in the spinal cord of SOD1(G93A) mice, a well-established model for ALS, as well as in the spinal cord of patients with sporadic ALS (sALS). This increased activation was particularly evident in reactive GFAP-positive astrocytes. In addition, one of the main Notch ligands, Jagged-1, was ectopically expressed in reactive astrocytes in spinal cord from ALS mice and patients, but absent in resting astrocytes. Astrocyte-specific inactivation of Jagged-1 in presymptomatic SOD1(G93A) mice further exacerbated the activation of the Notch signaling pathway and aggravated the course of the disease in these animals without affecting disease onset. These data suggest that aberrant Notch signaling activation contributes to the pathogenesis of ALS, both in sALS patients and SOD1(G93A) mice, and that it is mitigated in part by the upregulation of astrocytic Jagged-1.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Neurovetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Neurosciences (hsv//eng)
Nyckelord
- Amyotrophic lateral sclerosis
- Notch
- Jagged-1
- Cis
- Trans
- Astrocyte
- Motor neuron
- Neurodegeneration
- Conditional knock-out mice
- Genetic modulation
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- ref (ämneskategori)
- art (ämneskategori)
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