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Nat Commun. 2021 Dec 02;12(1):7035. doi: 10.1038/s41467-021-27204-9.

Atlas of RNA editing events affecting protein expression in aged and Alzheimer's disease human brain tissue.

Nature communications

Yiyi Ma, Eric B Dammer, Daniel Felsky, Duc M Duong, Hans-Ulrich Klein, Charles C White, Maotian Zhou, Benjamin A Logsdon, Cristin McCabe, Jishu Xu, Minghui Wang, Thomas S Wingo, James J Lah, Bin Zhang, Julie Schneider, Mariet Allen, Xue Wang, Nilüfer Ertekin-Taner, Nicholas T Seyfried, Allan I Levey, David A Bennett, Philip L De Jager

Affiliations

  1. Center for Translational & Computational Neuroimmunology, Department of Neurology, Columbia University Medical Center, 630 West 168th street, New York, NY, 10032, USA.
  2. Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, 30322, USA.
  3. Integrated Proteomics Core Facility, Emory University School of Medicine, Atlanta, GA, 30322, USA.
  4. Krembil Centre for Neuroinformatics, Centre for Addiction and Mental Health, Toronto, ON, Canada.
  5. Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
  6. Cell Circuits Program, Broad Institute, 415 Main street, Cambridge, MA, 02142, USA.
  7. Sage Bionetworks, 2901 Third Avenue, Suite 330, Seattle, WA, 98121, USA.
  8. Rush Alzheimer's Disease Center, Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, 60612, USA.
  9. Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, 10029, USA.
  10. Icahn Institute of Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, 10029, USA.
  11. Department of Neurology, Emory University School of Medicine, Atlanta, GA, 30322, USA.
  12. Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, 30322, USA.
  13. Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, 30322, USA.
  14. Mayo Clinic Florida, Department of Neuroscience, Jacksonville, FL, 32224, USA.
  15. Mayo Clinic Florida, Department of Health Sciences Research, Jacksonville, FL, 32224, USA.
  16. Mayo Clinic Florida, Department of Neurology, Jacksonville, FL, 32224, USA.
  17. Center for Translational & Computational Neuroimmunology, Department of Neurology, Columbia University Medical Center, 630 West 168th street, New York, NY, 10032, USA. [email protected].
  18. Cell Circuits Program, Broad Institute, 415 Main street, Cambridge, MA, 02142, USA. [email protected].

PMID: 34857756 PMCID: PMC8640037 DOI: 10.1038/s41467-021-27204-9

Abstract

RNA editing is a feature of RNA maturation resulting in the formation of transcripts whose sequence differs from the genome template. Brain RNA editing may be altered in Alzheimer's disease (AD). Here, we analyzed data from 1,865 brain samples covering 9 brain regions from 1,074 unrelated subjects on a transcriptome-wide scale to identify inter-regional differences in RNA editing. We expand the list of known brain editing events by identifying 58,761 previously unreported events. We note that only a small proportion of these editing events are found at the protein level in our proteome-wide validation effort. We also identified the occurrence of editing events associated with AD dementia, neuropathological measures and longitudinal cognitive decline in: SYT11, MCUR1, SOD2, ORAI2, HSDL2, PFKP, and GPRC5B. Thus, we present an extended reference set of brain RNA editing events, identify a subset that are found to be expressed at the protein level, and extend the narrative of transcriptomic perturbation in AD to RNA editing.

© 2021. The Author(s).

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