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RbAp48 Protein Is a Critical Component of GPR158/OCN Signaling and Ameliorates Age-Related Memory Loss.

Cell reports | 2018

Precisely deciphering the molecular mechanisms of age-related memory loss is crucial to create appropriate therapeutic interventions. We have previously shown that the histone-binding protein RbAp48/Rbbp4 is a molecular determinant of Age-Related Memory Loss. By exploring how this protein regulates the genomic landscape of the hippocampal circuit, we find that RbAp48 controls the expression of BDNF and GPR158 proteins, both critical components of osteocalcin (OCN) signaling in the mouse hippocampus. We show that inhibition of RbAp48 in the hippocampal formation inhibits OCN's beneficial functions in cognition and causes deficits in discrimination memory. In turn, disruption of OCN/GPR158 signaling leads to the downregulation of RbAp48 protein, mimicking the discrimination memory deficits observed in the aged hippocampus. We also show that activation of the OCN/GPR158 pathway increases the expression of RbAp48 in the aged dentate gyrus and rescues age-related memory loss.

Pubmed ID: 30355501 RIS Download

Research resources used in this publication

Associated grants

  • Agency: NIMH NIH HHS, United States
    Id: R01 MH115215
  • Agency: NIMH NIH HHS, United States
    Id: R56 MH106809

Publication data is provided by the National Library of Medicine ® and PubMed ®. Data is retrieved from PubMed ® on a weekly schedule. For terms and conditions see the National Library of Medicine Terms and Conditions.

This is a list of tools and resources that we have found mentioned in this publication.


Addgene (tool)

RRID:SCR_002037

Non-profit plasmid repository dedicated to helping scientists around the world share high-quality plasmids. Facilitates archiving and distributing DNA-based research reagents and associated data to scientists worldwide. Repository contains over 65,000 plasmids, including special collections on CRISPR, fluorescent proteins, and ready-to-use viral preparations. There is no cost for scientists to deposit plasmids, which saves time and money associated with shipping plasmids themselves. All plasmids are fully sequenced for validation and sequencing data is openly available. We handle the appropriate Material Transfer Agreements (MTA) with institutions, facilitating open exchange and offering intellectual property and liability protection for depositing scientists. Furthermore, we curate free educational resources for the scientific community including a blog, eBooks, video protocols, and detailed molecular biology resources.

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NeuroMab (tool)

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Cold Spring Harbor Laboratory (tool)

RRID:SCR_008326

Non profit, private research and education institution that performs molecular and genetic research used to generate methods for better diagnostics and treatments for cancer and neurological diseases. Research of cancer causing genes and their respective signaling pathways, mutations and structural variations of the human genome that could cause neurodevelopmental and neurodegenerative illnesses such as autism, schizophrenia, and Alzheimer's and Parkinson's diseases and also research in plant genetics and quantitative biology.

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RbAp48 antibody [11G10] (antibody)

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BDNF (N-20) (antibody)

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CBP (C-20) (antibody)

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GPR158 antibody (antibody)

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RRID:IMSR_JAX:021882

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RRID:IMSR_TAC:b6

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C57BL/6J (organism)

RRID:IMSR_JAX:000664

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HEK293-FT (cell line)

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RRID:IMSR_JAX:007914

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guinea pig anti-parvalbumin antibody (antibody)

RRID:AB_2665495

This polyclonal targets recombinant mouse parvalbumin

View all literature mentions

Anti-mCherry antibody (antibody)

RRID:AB_2722769

This polyclonal targets mCherry

View all literature mentions

Anti-GFP antibody (antibody)

RRID:AB_300798

This polyclonal targets GFP

View all literature mentions

MAP2 antibody - Neuronal Marker (antibody)

RRID:AB_2138153

This polyclonal targets MAP2 antibody - Neuronal Marker

View all literature mentions

Anti-PSD-95 Antibody (antibody)

RRID:AB_2292909

This monoclonal targets PSD 95

View all literature mentions

Osteocalcin Polyclonal Antibody (antibody)

RRID:AB_2065062

This unknown targets Osteocalcin

View all literature mentions

GPR158 antibody (antibody)

RRID:AB_10723755

This polyclonal targets GPR158 antibody

View all literature mentions

CBP (C-20) (antibody)

RRID:AB_2245237

This polyclonal targets CBP (C-20)

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CBP (C-1) (antibody)

RRID:AB_626817

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BDNF (N-20) (antibody)

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Monoclonal Anti-beta-Tubulin I antibody produced in mouse (antibody)

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RbAp48 Polyclonal Antibody (antibody)

RRID:AB_2177636

This unknown targets RbAp48

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RbAp48 antibody [11G10] (antibody)

RRID:AB_372869

This monoclonal targets RbAp48

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