BACE-1 is expressed in the blood-brain barrier endothelium and is upregulated in a murine model of Alzheimer's disease.
Identifieur interne : 000171 ( PubMed/Checkpoint ); précédent : 000170; suivant : 000172BACE-1 is expressed in the blood-brain barrier endothelium and is upregulated in a murine model of Alzheimer's disease.
Auteurs : Kavi Devraj [Allemagne] ; Slobodan Poznanovic [Allemagne] ; Christoph Spahn [Allemagne] ; Gerhard Schwall [Allemagne] ; Patrick N. Harter [Allemagne] ; Michel Mittelbronn [Allemagne] ; Katia Antoniello [Suisse] ; Paolo Paganetti [Suisse] ; Andreas Muhs [Suisse] ; Mike Heilemann [Allemagne] ; Richard A. Hawkins [États-Unis] ; André Schrattenholz [Allemagne] ; Stefan Liebner [Allemagne]Source :
- Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism [ 1559-7016 ] ; 2016.
Abstract
Endothelial cells of the blood-brain barrier form a structural and functional barrier maintaining brain homeostasis via paracellular tight junctions and specific transporters such as P-glycoprotein. The blood-brain barrier is responsible for negligible bioavailability of many neuroprotective drugs. In Alzheimer's disease, current treatment approaches include inhibitors of BACE-1 (β-site of amyloid precursor protein cleaving enzyme), a proteinase generating neurotoxic β-amyloid. It is known that BACE-1 is highly expressed in endosomes and membranes of neurons and glia. We now provide evidence that BACE-1 is expressed in blood-brain barrier endothelial cells of human, mouse, and bovine origin. We further show its predominant membrane localization by 3D-dSTORM super-resolution microscopy, and by biochemical fractionation that further shows an abluminal distribution of BACE-1 in brain microvessels. We confirm its functionality in processing APP in primary mouse brain endothelial cells. In an Alzheimer's disease mouse model we show that BACE-1 is upregulated at the blood-brain barrier compared to healthy controls. We therefore suggest a critical role for BACE-1 at the blood-brain barrier in β-amyloid generation and in vascular aspects of Alzheimer's disease, particularly in the development of cerebral amyloid angiopathy.
DOI: 10.1177/0271678X15606463
PubMed: 26661166
Affiliations:
- Allemagne, Suisse, États-Unis
- Canton de Vaud, District de Darmstadt, Hesse (Land), Illinois, Rhénanie-Palatinat
- Francfort-sur-le-Main, Lausanne, Mayence
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<front><div type="abstract" xml:lang="en">Endothelial cells of the blood-brain barrier form a structural and functional barrier maintaining brain homeostasis via paracellular tight junctions and specific transporters such as P-glycoprotein. The blood-brain barrier is responsible for negligible bioavailability of many neuroprotective drugs. In Alzheimer's disease, current treatment approaches include inhibitors of BACE-1 (β-site of amyloid precursor protein cleaving enzyme), a proteinase generating neurotoxic β-amyloid. It is known that BACE-1 is highly expressed in endosomes and membranes of neurons and glia. We now provide evidence that BACE-1 is expressed in blood-brain barrier endothelial cells of human, mouse, and bovine origin. We further show its predominant membrane localization by 3D-dSTORM super-resolution microscopy, and by biochemical fractionation that further shows an abluminal distribution of BACE-1 in brain microvessels. We confirm its functionality in processing APP in primary mouse brain endothelial cells. In an Alzheimer's disease mouse model we show that BACE-1 is upregulated at the blood-brain barrier compared to healthy controls. We therefore suggest a critical role for BACE-1 at the blood-brain barrier in β-amyloid generation and in vascular aspects of Alzheimer's disease, particularly in the development of cerebral amyloid angiopathy.</div>
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<Abstract><AbstractText>Endothelial cells of the blood-brain barrier form a structural and functional barrier maintaining brain homeostasis via paracellular tight junctions and specific transporters such as P-glycoprotein. The blood-brain barrier is responsible for negligible bioavailability of many neuroprotective drugs. In Alzheimer's disease, current treatment approaches include inhibitors of BACE-1 (β-site of amyloid precursor protein cleaving enzyme), a proteinase generating neurotoxic β-amyloid. It is known that BACE-1 is highly expressed in endosomes and membranes of neurons and glia. We now provide evidence that BACE-1 is expressed in blood-brain barrier endothelial cells of human, mouse, and bovine origin. We further show its predominant membrane localization by 3D-dSTORM super-resolution microscopy, and by biochemical fractionation that further shows an abluminal distribution of BACE-1 in brain microvessels. We confirm its functionality in processing APP in primary mouse brain endothelial cells. In an Alzheimer's disease mouse model we show that BACE-1 is upregulated at the blood-brain barrier compared to healthy controls. We therefore suggest a critical role for BACE-1 at the blood-brain barrier in β-amyloid generation and in vascular aspects of Alzheimer's disease, particularly in the development of cerebral amyloid angiopathy.</AbstractText>
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<ForeName>Richard A</ForeName>
<Initials>RA</Initials>
<AffiliationInfo><Affiliation>Dept of Physiology/Biophysics, University of Health Sci./Chicago Medical School, Illinois, USA.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Schrattenholz</LastName>
<ForeName>André</ForeName>
<Initials>A</Initials>
<AffiliationInfo><Affiliation>Pivot GmbH, Trier, Germany.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Liebner</LastName>
<ForeName>Stefan</ForeName>
<Initials>S</Initials>
<AffiliationInfo><Affiliation>Edinger Institute of Neurology, Goethe University Medical School, Frankfurt, Germany.</Affiliation>
</AffiliationInfo>
</Author>
</AuthorList>
<Language>eng</Language>
<PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType>
</PublicationTypeList>
<ArticleDate DateType="Electronic"><Year>2015</Year>
<Month>10</Month>
<Day>13</Day>
</ArticleDate>
</Article>
<MedlineJournalInfo><Country>United States</Country>
<MedlineTA>J Cereb Blood Flow Metab</MedlineTA>
<NlmUniqueID>8112566</NlmUniqueID>
<ISSNLinking>0271-678X</ISSNLinking>
</MedlineJournalInfo>
<CitationSubset>IM</CitationSubset>
<OtherID Source="NLM">PMC4929696 [Available on 07/01/17]</OtherID>
<KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Alzheimer’s disease</Keyword>
<Keyword MajorTopicYN="N">BACE-1</Keyword>
<Keyword MajorTopicYN="N">blood–brain barrier</Keyword>
<Keyword MajorTopicYN="N">endothelium</Keyword>
<Keyword MajorTopicYN="N">β-amyloid</Keyword>
</KeywordList>
</MedlineCitation>
<PubmedData><History><PubMedPubDate PubStatus="received"><Year>2015</Year>
<Month>01</Month>
<Day>16</Day>
</PubMedPubDate>
<PubMedPubDate PubStatus="accepted"><Year>2015</Year>
<Month>07</Month>
<Day>21</Day>
</PubMedPubDate>
<PubMedPubDate PubStatus="pmc-release"><Year>2017</Year>
<Month>07</Month>
<Day>01</Day>
</PubMedPubDate>
<PubMedPubDate PubStatus="entrez"><Year>2015</Year>
<Month>12</Month>
<Day>15</Day>
<Hour>6</Hour>
<Minute>0</Minute>
</PubMedPubDate>
<PubMedPubDate PubStatus="pubmed"><Year>2015</Year>
<Month>12</Month>
<Day>15</Day>
<Hour>6</Hour>
<Minute>0</Minute>
</PubMedPubDate>
<PubMedPubDate PubStatus="medline"><Year>2015</Year>
<Month>12</Month>
<Day>15</Day>
<Hour>6</Hour>
<Minute>0</Minute>
</PubMedPubDate>
</History>
<PublicationStatus>ppublish</PublicationStatus>
<ArticleIdList><ArticleId IdType="pubmed">26661166</ArticleId>
<ArticleId IdType="pii">0271678X15606463</ArticleId>
<ArticleId IdType="doi">10.1177/0271678X15606463</ArticleId>
<ArticleId IdType="pmc">PMC4929696</ArticleId>
</ArticleIdList>
</PubmedData>
</pubmed>
<affiliations><list><country><li>Allemagne</li>
<li>Suisse</li>
<li>États-Unis</li>
</country>
<region><li>Canton de Vaud</li>
<li>District de Darmstadt</li>
<li>Hesse (Land)</li>
<li>Illinois</li>
<li>Rhénanie-Palatinat</li>
</region>
<settlement><li>Francfort-sur-le-Main</li>
<li>Lausanne</li>
<li>Mayence</li>
</settlement>
</list>
<tree><country name="Allemagne"><noRegion><name sortKey="Devraj, Kavi" sort="Devraj, Kavi" uniqKey="Devraj K" first="Kavi" last="Devraj">Kavi Devraj</name>
</noRegion>
<name sortKey="Harter, Patrick N" sort="Harter, Patrick N" uniqKey="Harter P" first="Patrick N" last="Harter">Patrick N. Harter</name>
<name sortKey="Heilemann, Mike" sort="Heilemann, Mike" uniqKey="Heilemann M" first="Mike" last="Heilemann">Mike Heilemann</name>
<name sortKey="Liebner, Stefan" sort="Liebner, Stefan" uniqKey="Liebner S" first="Stefan" last="Liebner">Stefan Liebner</name>
<name sortKey="Mittelbronn, Michel" sort="Mittelbronn, Michel" uniqKey="Mittelbronn M" first="Michel" last="Mittelbronn">Michel Mittelbronn</name>
<name sortKey="Poznanovic, Slobodan" sort="Poznanovic, Slobodan" uniqKey="Poznanovic S" first="Slobodan" last="Poznanovic">Slobodan Poznanovic</name>
<name sortKey="Schrattenholz, Andre" sort="Schrattenholz, Andre" uniqKey="Schrattenholz A" first="André" last="Schrattenholz">André Schrattenholz</name>
<name sortKey="Schwall, Gerhard" sort="Schwall, Gerhard" uniqKey="Schwall G" first="Gerhard" last="Schwall">Gerhard Schwall</name>
<name sortKey="Spahn, Christoph" sort="Spahn, Christoph" uniqKey="Spahn C" first="Christoph" last="Spahn">Christoph Spahn</name>
</country>
<country name="Suisse"><region name="Canton de Vaud"><name sortKey="Antoniello, Katia" sort="Antoniello, Katia" uniqKey="Antoniello K" first="Katia" last="Antoniello">Katia Antoniello</name>
</region>
<name sortKey="Muhs, Andreas" sort="Muhs, Andreas" uniqKey="Muhs A" first="Andreas" last="Muhs">Andreas Muhs</name>
<name sortKey="Paganetti, Paolo" sort="Paganetti, Paolo" uniqKey="Paganetti P" first="Paolo" last="Paganetti">Paolo Paganetti</name>
</country>
<country name="États-Unis"><region name="Illinois"><name sortKey="Hawkins, Richard A" sort="Hawkins, Richard A" uniqKey="Hawkins R" first="Richard A" last="Hawkins">Richard A. Hawkins</name>
</region>
</country>
</tree>
</affiliations>
</record>
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