miR-212 and miR-132 Are Downregulated in Neurally Derived Plasma Exosomes of Alzheimer’s Patients

It was recently discovered that brain cells release extracellular vesicles (EV) which can pass from brain into blood. These findings raise the possibility that brain-derived EV's present in blood can be used to monitor disease processes occurring in the cerebrum. Since the levels of certain mic...

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Published inFrontiers in neuroscience Vol. 13; p. 1208
Main Authors Cha, Diana J., Mengel, David, Mustapic, Maja, Liu, Wen, Selkoe, Dennis J., Kapogiannis, Dimitrios, Galasko, Douglas, Rissman, Robert A., Bennett, David A., Walsh, Dominic M.
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Research Foundation 26.11.2019
Frontiers Media S.A
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Abstract It was recently discovered that brain cells release extracellular vesicles (EV) which can pass from brain into blood. These findings raise the possibility that brain-derived EV's present in blood can be used to monitor disease processes occurring in the cerebrum. Since the levels of certain micro-RNAs (miRNAs) have been reported to be altered in Alzheimer's disease (AD) brain, we sought to assess miRNA dysregulation in AD brain tissue and to determine if these changes were reflected in neural EVs isolated from blood of subjects with AD. To this end, we employed high-content miRNA arrays to search for differences in miRNAs in RNA pools from brain tissue of AD ( = 5), high pathological control (HPC) ( = 5), or cognitively intact pathology-free controls ( = 5). Twelve miRNAs were altered by >1.5-fold in AD compared to controls, and six of these were also changed compared to HPCs. Analysis of hits in brain extracts from 11 AD, 7 HPCs and 9 controls revealed a similar fold difference in these six miRNAs, with three showing statistically significant group differences and one with a strong trend toward group differences. Thereafter, we focused on the four miRNAs that showed group differences and measured their content in neurally derived blood EVs isolated from 63 subjects: 16 patients with early stage dementia and a CSF Aβ42+ tau profile consistent with AD, 16 individuals with mild cognitive impairment (MCI) and an AD CSF profile, and 31 cognitively intact controls with normal CSF Aβ42+ tau levels. ROC analysis indicated that measurement of miR-132-3p in neurally-derived plasma EVs showed good sensitivity and specificity to diagnose AD, but did not effectively separate individuals with AD-MCI from controls. Moreover, when we measured the levels of a related miRNA, miR-212, we found that this miRNA was also decreased in neural EVs from AD patients compared to controls. Our results suggest that measurement of miR-132 and miR-212 in neural EVs should be further investigated as a diagnostic aid for AD and as a potential theragnostic.
AbstractList It was recently discovered that brain cells release extracellular vesicles (EV) which can pass from brain into blood. These findings raise the possibility that brain-derived EV’s present in blood can be used to monitor disease processes occurring in the cerebrum. Since the levels of certain micro-RNAs (miRNAs) have been reported to be altered in Alzheimer’s disease (AD) brain, we sought to assess miRNA dysregulation in AD brain tissue and to determine if these changes were reflected in neural EVs isolated from blood of subjects with AD. To this end, we employed high-content miRNA arrays to search for differences in miRNAs in RNA pools from brain tissue of AD (n = 5), high pathological control (HPC) (n = 5), or cognitively intact pathology-free controls (n = 5). Twelve miRNAs were altered by >1.5-fold in AD compared to controls, and six of these were also changed compared to HPCs. Analysis of hits in brain extracts from 11 AD, 7 HPCs and 9 controls revealed a similar fold difference in these six miRNAs, with three showing statistically significant group differences and one with a strong trend toward group differences. Thereafter, we focused on the four miRNAs that showed group differences and measured their content in neurally derived blood EVs isolated from 63 subjects: 16 patients with early stage dementia and a CSF Aβ42+ tau profile consistent with AD, 16 individuals with mild cognitive impairment (MCI) and an AD CSF profile, and 31 cognitively intact controls with normal CSF Aβ42+ tau levels. ROC analysis indicated that measurement of miR-132-3p in neurally-derived plasma EVs showed good sensitivity and specificity to diagnose AD, but did not effectively separate individuals with AD-MCI from controls. Moreover, when we measured the levels of a related miRNA, miR-212, we found that this miRNA was also decreased in neural EVs from AD patients compared to controls. Our results suggest that measurement of miR-132 and miR-212 in neural EVs should be further investigated as a diagnostic aid for AD and as a potential theragnostic.
It was recently discovered that brain cells release extracellular vesicles (EV) which can pass from brain into blood. These findings raise the possibility that brain-derived EV's present in blood can be used to monitor disease processes occurring in the cerebrum. Since the levels of certain micro-RNAs (miRNAs) have been reported to be altered in Alzheimer's disease (AD) brain, we sought to assess miRNA dysregulation in AD brain tissue and to determine if these changes were reflected in neural EVs isolated from blood of subjects with AD. To this end, we employed high-content miRNA arrays to search for differences in miRNAs in RNA pools from brain tissue of AD (n = 5), high pathological control (HPC) (n = 5), or cognitively intact pathology-free controls (n = 5). Twelve miRNAs were altered by >1.5-fold in AD compared to controls, and six of these were also changed compared to HPCs. Analysis of hits in brain extracts from 11 AD, 7 HPCs and 9 controls revealed a similar fold difference in these six miRNAs, with three showing statistically significant group differences and one with a strong trend toward group differences. Thereafter, we focused on the four miRNAs that showed group differences and measured their content in neurally derived blood EVs isolated from 63 subjects: 16 patients with early stage dementia and a CSF Aβ42+ tau profile consistent with AD, 16 individuals with mild cognitive impairment (MCI) and an AD CSF profile, and 31 cognitively intact controls with normal CSF Aβ42+ tau levels. ROC analysis indicated that measurement of miR-132-3p in neurally-derived plasma EVs showed good sensitivity and specificity to diagnose AD, but did not effectively separate individuals with AD-MCI from controls. Moreover, when we measured the levels of a related miRNA, miR-212, we found that this miRNA was also decreased in neural EVs from AD patients compared to controls. Our results suggest that measurement of miR-132 and miR-212 in neural EVs should be further investigated as a diagnostic aid for AD and as a potential theragnostic.It was recently discovered that brain cells release extracellular vesicles (EV) which can pass from brain into blood. These findings raise the possibility that brain-derived EV's present in blood can be used to monitor disease processes occurring in the cerebrum. Since the levels of certain micro-RNAs (miRNAs) have been reported to be altered in Alzheimer's disease (AD) brain, we sought to assess miRNA dysregulation in AD brain tissue and to determine if these changes were reflected in neural EVs isolated from blood of subjects with AD. To this end, we employed high-content miRNA arrays to search for differences in miRNAs in RNA pools from brain tissue of AD (n = 5), high pathological control (HPC) (n = 5), or cognitively intact pathology-free controls (n = 5). Twelve miRNAs were altered by >1.5-fold in AD compared to controls, and six of these were also changed compared to HPCs. Analysis of hits in brain extracts from 11 AD, 7 HPCs and 9 controls revealed a similar fold difference in these six miRNAs, with three showing statistically significant group differences and one with a strong trend toward group differences. Thereafter, we focused on the four miRNAs that showed group differences and measured their content in neurally derived blood EVs isolated from 63 subjects: 16 patients with early stage dementia and a CSF Aβ42+ tau profile consistent with AD, 16 individuals with mild cognitive impairment (MCI) and an AD CSF profile, and 31 cognitively intact controls with normal CSF Aβ42+ tau levels. ROC analysis indicated that measurement of miR-132-3p in neurally-derived plasma EVs showed good sensitivity and specificity to diagnose AD, but did not effectively separate individuals with AD-MCI from controls. Moreover, when we measured the levels of a related miRNA, miR-212, we found that this miRNA was also decreased in neural EVs from AD patients compared to controls. Our results suggest that measurement of miR-132 and miR-212 in neural EVs should be further investigated as a diagnostic aid for AD and as a potential theragnostic.
It was recently discovered that brain cells release extracellular vesicles (EV) which can pass from brain into blood. These findings raise the possibility that brain-derived EV's present in blood can be used to monitor disease processes occurring in the cerebrum. Since the levels of certain micro-RNAs (miRNAs) have been reported to be altered in Alzheimer's disease (AD) brain, we sought to assess miRNA dysregulation in AD brain tissue and to determine if these changes were reflected in neural EVs isolated from blood of subjects with AD. To this end, we employed high-content miRNA arrays to search for differences in miRNAs in RNA pools from brain tissue of AD ( = 5), high pathological control (HPC) ( = 5), or cognitively intact pathology-free controls ( = 5). Twelve miRNAs were altered by >1.5-fold in AD compared to controls, and six of these were also changed compared to HPCs. Analysis of hits in brain extracts from 11 AD, 7 HPCs and 9 controls revealed a similar fold difference in these six miRNAs, with three showing statistically significant group differences and one with a strong trend toward group differences. Thereafter, we focused on the four miRNAs that showed group differences and measured their content in neurally derived blood EVs isolated from 63 subjects: 16 patients with early stage dementia and a CSF Aβ42+ tau profile consistent with AD, 16 individuals with mild cognitive impairment (MCI) and an AD CSF profile, and 31 cognitively intact controls with normal CSF Aβ42+ tau levels. ROC analysis indicated that measurement of miR-132-3p in neurally-derived plasma EVs showed good sensitivity and specificity to diagnose AD, but did not effectively separate individuals with AD-MCI from controls. Moreover, when we measured the levels of a related miRNA, miR-212, we found that this miRNA was also decreased in neural EVs from AD patients compared to controls. Our results suggest that measurement of miR-132 and miR-212 in neural EVs should be further investigated as a diagnostic aid for AD and as a potential theragnostic.
Recently it was discovered that brain cells release extracellular vesicles (EV) that can pass from brain into blood. These findings raise the possibility that brain-derived EV’s present in blood can be used to monitor disease processes occurring in the central nervous system. Since the levels of certain micro-RNAs (miRNAs) have been reported to be altered in Alzheimer’s disease (AD) brain, we sought to assess miRNA dysregulation in AD brain tissue and to determine if these changes were reflected in neural EVs isolated from blood of subjects with AD. To this end, we employed high-content miRNA arrays to search for differences in miRNAs in RNA pools from brain tissue of AD (n=5), high pathological control (HPC) (n=5), or cognitively intact pathology-free controls (n=5). Twelve miRNAs were altered by >1.5-fold in AD compared to controls, and six of these were also changed compared to HPCs. Analysis of hits in brain extracts from 11 AD, 7 HPCs and 9 controls revealed a similar fold difference in these six miRNAs, with three showing statistically significant group differences and one with a strong trend towards group differences. Thereafter, we focused on the four miRNAs that showed group differences and measured their content in neurally-derived blood EVs isolated from 64 subjects: 16 patients with early stage dementia and a CSF Aβ42 + tau profile consistent with AD, 16 individuals with mild cognitive impairment (MCI) and an AD CSF profile, and 31 cognitively intact controls with normal CSF Aβ42 + tau levels. ROC analysis indicated that measurement of miR-132-3p in neurally-derived plasma EVs showed good sensitivity and specificity to diagnose AD, but did not effectively separate individuals with AD-MCI from controls. Moreover, when we measured the levels of a related miRNA, miR-212, we found that this miRNA was also decreased in neural EVs from AD patients compared to controls. Our results suggest that measurement of miR-132 and miR-212 in neural EVs should be further investigated as a diagnostic aid for AD and as a potential theragnostic.
It was recently discovered that brain cells release extracellular vesicles (EV) which can pass from brain into blood. These findings raise the possibility that brain-derived EV’s present in blood can be used to monitor disease processes occurring in the cerebrum. Since the levels of certain micro-RNAs (miRNAs) have been reported to be altered in Alzheimer’s disease (AD) brain, we sought to assess miRNA dysregulation in AD brain tissue and to determine if these changes were reflected in neural EVs isolated from blood of subjects with AD. To this end, we employed high-content miRNA arrays to search for differences in miRNAs in RNA pools from brain tissue of AD ( n = 5), high pathological control (HPC) ( n = 5), or cognitively intact pathology-free controls ( n = 5). Twelve miRNAs were altered by >1.5-fold in AD compared to controls, and six of these were also changed compared to HPCs. Analysis of hits in brain extracts from 11 AD, 7 HPCs and 9 controls revealed a similar fold difference in these six miRNAs, with three showing statistically significant group differences and one with a strong trend toward group differences. Thereafter, we focused on the four miRNAs that showed group differences and measured their content in neurally derived blood EVs isolated from 63 subjects: 16 patients with early stage dementia and a CSF Aβ42+ tau profile consistent with AD, 16 individuals with mild cognitive impairment (MCI) and an AD CSF profile, and 31 cognitively intact controls with normal CSF Aβ42+ tau levels. ROC analysis indicated that measurement of miR-132-3p in neurally-derived plasma EVs showed good sensitivity and specificity to diagnose AD, but did not effectively separate individuals with AD-MCI from controls. Moreover, when we measured the levels of a related miRNA, miR-212, we found that this miRNA was also decreased in neural EVs from AD patients compared to controls. Our results suggest that measurement of miR-132 and miR-212 in neural EVs should be further investigated as a diagnostic aid for AD and as a potential theragnostic.
Author Mengel, David
Galasko, Douglas
Kapogiannis, Dimitrios
Selkoe, Dennis J.
Bennett, David A.
Walsh, Dominic M.
Mustapic, Maja
Cha, Diana J.
Rissman, Robert A.
Liu, Wen
AuthorAffiliation 5 Department of Neurosciences, University of California , San Diego, La Jolla, CA , United States
3 German Center for Neurodegenerative Diseases, University of Tübingen , Tübingen , Germany
1 Laboratory for Neurodegenerative Disease Research , Ann Romney Center for Neurologic Diseases, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA , United States
2 Department of Neurodegenerative Diseases , Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, Tübingen , Germany
8 Alzheimer’s Disease and Dementia Research Unit , Biogen Inc., Cambridge, MA , United States
4 Laboratory of Neurosciences , National Institute on Aging, National Institutes of Health, Baltimore, MD , United States
7 Rush Alzheimer‘s Disease Center , Rush Medical College, Chicago, IL , United States
6 VA San Diego Healthcare System , La Jolla, CA , United States
AuthorAffiliation_xml – name: 1 Laboratory for Neurodegenerative Disease Research , Ann Romney Center for Neurologic Diseases, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA , United States
– name: 6 VA San Diego Healthcare System , La Jolla, CA , United States
– name: 2 Department of Neurodegenerative Diseases , Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, Tübingen , Germany
– name: 8 Alzheimer’s Disease and Dementia Research Unit , Biogen Inc., Cambridge, MA , United States
– name: 7 Rush Alzheimer‘s Disease Center , Rush Medical College, Chicago, IL , United States
– name: 3 German Center for Neurodegenerative Diseases, University of Tübingen , Tübingen , Germany
– name: 5 Department of Neurosciences, University of California , San Diego, La Jolla, CA , United States
– name: 4 Laboratory of Neurosciences , National Institute on Aging, National Institutes of Health, Baltimore, MD , United States
Author_xml – sequence: 1
  givenname: Diana J.
  surname: Cha
  fullname: Cha, Diana J.
– sequence: 2
  givenname: David
  surname: Mengel
  fullname: Mengel, David
– sequence: 3
  givenname: Maja
  surname: Mustapic
  fullname: Mustapic, Maja
– sequence: 4
  givenname: Wen
  surname: Liu
  fullname: Liu, Wen
– sequence: 5
  givenname: Dennis J.
  surname: Selkoe
  fullname: Selkoe, Dennis J.
– sequence: 6
  givenname: Dimitrios
  surname: Kapogiannis
  fullname: Kapogiannis, Dimitrios
– sequence: 7
  givenname: Douglas
  surname: Galasko
  fullname: Galasko, Douglas
– sequence: 8
  givenname: Robert A.
  surname: Rissman
  fullname: Rissman, Robert A.
– sequence: 9
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  surname: Bennett
  fullname: Bennett, David A.
– sequence: 10
  givenname: Dominic M.
  surname: Walsh
  fullname: Walsh, Dominic M.
BackLink https://www.ncbi.nlm.nih.gov/pubmed/31849573$$D View this record in MEDLINE/PubMed
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ContentType Journal Article
Copyright Copyright © 2019 Cha, Mengel, Mustapic, Liu, Selkoe, Kapogiannis, Galasko, Rissman, Bennett and Walsh.
2019. This work is licensed under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
Copyright © 2019 Cha, Mengel, Mustapic, Liu, Selkoe, Kapogiannis, Galasko, Rissman, Bennett and Walsh. 2019 Cha, Mengel, Mustapic, Liu, Selkoe, Kapogiannis, Galasko, Rissman, Bennett and Walsh
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– notice: 2019. This work is licensed under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
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Keywords mild cognitive impairment
extracellular vesicles
blood biomarker
L1CAM
micro-RNA
qRT-PCR
Language English
License Copyright © 2019 Cha, Mengel, Mustapic, Liu, Selkoe, Kapogiannis, Galasko, Rissman, Bennett and Walsh.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
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Edited by: Efrat Levy, New York University, United States
This article was submitted to Neurodegeneration, a section of the journal Frontiers in Neuroscience
These authors have contributed equally to this work
Reviewed by: Scott Edward Counts, Michigan State University, United States; Daniela Galimberti, University of Milan, Italy; P. Hemachandra Reddy, Texas Tech University Health Sciences Center, United States
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Snippet It was recently discovered that brain cells release extracellular vesicles (EV) which can pass from brain into blood. These findings raise the possibility that...
Recently it was discovered that brain cells release extracellular vesicles (EV) that can pass from brain into blood. These findings raise the possibility that...
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StartPage 1208
SubjectTerms Alzheimer's disease
Biomarkers
Blood
blood biomarker
Brain research
Cell adhesion & migration
Central nervous system
Cerebrospinal fluid
Cognitive ability
Dementia
Dementia disorders
Disease
Exosomes
extracellular vesicles
Gene expression
L1CAM
micro-RNA
MicroRNAs
mild cognitive impairment
miRNA
Neuroscience
Neurosciences
Pathology
Proteins
qRT-PCR
Statistical analysis
Tau protein
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Title miR-212 and miR-132 Are Downregulated in Neurally Derived Plasma Exosomes of Alzheimer’s Patients
URI https://www.ncbi.nlm.nih.gov/pubmed/31849573
https://www.proquest.com/docview/2318358060
https://www.proquest.com/docview/2328347042
https://pubmed.ncbi.nlm.nih.gov/PMC6902042
https://doaj.org/article/c18a7503e7f6458f86bfd3892a7a15c2
Volume 13
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