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Histone H2A ubiquitination resulting from Brap loss of function connects multiple aging hallmarks and accelerates neurodegeneration.

Yan Guo | Alison A Chomiak | Ye Hong | Clara C Lowe | Caroline A Kopsidas | Wen-Ching Chan | Jorge Andrade | Hongna Pan | Xiaoming Zhou | Edwin S Monuki | Yuanyi Feng
iScience | 2022

Aging is an intricate process characterized by multiple hallmarks including stem cell exhaustion, genome instability, epigenome alteration, impaired proteostasis, and cellular senescence. Whereas each of these traits is detrimental at the cellular level, it remains unclear how they are interconnected to cause systemic organ deterioration. Here we show that abrogating Brap, a BRCA1-associated protein essential for neurogenesis, results in persistent DNA double-strand breaks and elevation of histone H2A mono- and poly-ubiquitination (H2Aub). These defects extend to cellular senescence and proteasome-mediated histone H2A proteolysis with alterations in cells' proteomic and epigenetic states. Brap deletion in the mouse brain causes neuroinflammation, impaired proteostasis, accelerated neurodegeneration, and substantially shortened the lifespan. We further show the elevation of H2Aub also occurs in human brain tissues with Alzheimer's disease. These data together suggest that chromatin aberrations mediated by H2Aub may act as a nexus of multiple aging hallmarks and promote tissue-wide degeneration.

Pubmed ID: 35754718 RIS Download

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Anti Iba1, Rabbit antibody (antibody)

RRID:AB_839504

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cyclin A (H-432) (antibody)

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Monoclonal Anti-Vinculin antibody produced in mouse (antibody)

RRID:AB_477629

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MMP1 antibody (antibody)

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Monoclonal Anti-alpha-Tubulin antibody produced in mouse (antibody)

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Monoclonal Anti-GAPDH-Peroxidase antibody produced in mouse (antibody)

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This monoclonal targets GAPDH-Peroxidase antibody produced in mouse

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Nucleoporin p62 (antibody)

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Anti-Ubiquitin K11 linkage Antibody, clone 2A3/2E6 (antibody)

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This monoclonal targets Ubiquitin K11 linkage

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Anti-Ubiquitin (antibody)

RRID:AB_2180744

This polyclonal targets UBB

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Cleaved Caspase-3 (Asp175) Antibody (antibody)

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This polyclonal targets Cleaved Caspase-3 (Asp175)

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Anti-NeuN (antibody)

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This monoclonal targets NeuN

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Glial Fibiralliry Acidic Protein (antibody)

RRID:AB_305808

This unknown targets The initial immunization was performed with a preparation of full length human recombinant GFAP expressed in bacteria and highly purified

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PAI-1 antibody (antibody)

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This polyclonal targets PAI-1

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MMP2 antibody (antibody)

RRID:AB_2881746

This monoclonal targets MMP2

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MMP2 antibody (antibody)

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This polyclonal targets MMP2

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NEW Anti-RNF168 (antibody)

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This polyclonal targets NEW RNF168

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RNF2-human (antibody)

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This unknown targets RNF2

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Lamin A/C (4C11) Mouse mAb (antibody)

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This monoclonal targets Lamin A/C

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Lamin B (M-20) (antibody)

RRID:AB_648158

This polyclonal targets LMNB1

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Histone H4 antibody (antibody)

RRID:AB_2886030

This polyclonal targets Histone H4

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H3K9me3-human,H3K9me3-mouse (antibody)

RRID:AB_306848

This polyclonal targets H3K9me3

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Histone H3 antibody (pAb) (antibody)

RRID:AB_2793771

This unknown targets Histone H3

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Histone H2BK120ub1 antibody (mAb) (antibody)

RRID:AB_2793279

This monoclonal targets Histone H2BK120ub1

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Histone H2B antibody (pAb) (antibody)

RRID:AB_2793163

This unknown targets Histone H2B

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MacroH2A1 Antibody (antibody)

RRID:AB_2797647

This unknown targets H2AFY

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Purified anti-H2A.X Phospho (Ser139) (antibody)

RRID:AB_315794

This monoclonal targets H2A.X Phospho Ser139

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Histone H2A.XS139ph antibody (pAb) (antibody)

RRID:AB_2793161

This unknown targets Histone H2A.XS139ph

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Phospho-Histone H2A.X (Ser139) Antibody (antibody)

RRID:AB_2118010

This polyclonal targets Phospho-Histone H2A.X (Ser139)

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Histone H2A.X antibody (antibody)

RRID:AB_2728764

This polyclonal targets H2AX

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Anti-ubiquityl-Histone H2A, clone E6C5 (antibody)

RRID:AB_11214408

This monoclonal targets ubiquityl-Histone H2A clone E6C5

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Ubiquityl-Histone H2A (Lys119) (D27C4) XP Rabbit mAb (antibody)

RRID:AB_10891618

This monoclonal targets Histone H2A (Lys119)

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Histone H2A antibody (antibody)

RRID:AB_2885986

This polyclonal targets Histone H2A

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Histone H2A Antibody II (antibody)

RRID:AB_2118804

This polyclonal targets Histone H2A

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Histone H2A, C-terminal antibody (pAb) (antibody)

RRID:AB_2793270

This unknown targets Histone H2A, C-terminal

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Histone H2A (D6O3A) Antibody (antibody)

RRID:AB_2687875

This monoclonal targets Histone H2A

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Histone H1 (AE-4) (antibody)

RRID:AB_675641

This monoclonal targets Histone H1 (AE-4)

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Histone H1 antibody (pAb) (antibody)

RRID:AB_2793314

This unknown targets Histone H1

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Histone H1.0 antibody (pAb) (antibody)

RRID:AB_2793627

This unknown targets Histone H1.0

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PrP (6D11) (antibody)

RRID:AB_1128724

This monoclonal targets PrP (6D11)

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Tau (TAU-5) (antibody)

RRID:AB_785931

This monoclonal targets Tau (TAU-5)

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Tau (Tau 46) (antibody)

RRID:AB_628327

This monoclonal targets MAPT

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Phospho-Tau (Ser416) (D7U2P) Rabbit mAb (antibody)

RRID:AB_2728782

This monoclonal targets Phospho-Tau (Ser416)

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Phospho-Tau (Thr231) Polyclonal Antibody (antibody)

RRID:AB_2533742

This unknown targets Phospho-Tau (Thr231)

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Phospho-Tau (Ser202, Thr205) Monoclonal Antibody (AT8) (antibody)

RRID:AB_223647

This monoclonal targets Phospho-Tau (Ser202, Thr205)

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Phospho-Tau (Thr181) Recombinant Rabbit Monoclonal Antibody (5H9L11) (antibody)

RRID:AB_2532491

This recombinant monoclonal targets Phospho-Tau (Thr181)

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Fibronectin (antibody)

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This monoclonal targets FN1

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SQSTM1 / P62 antibody [N3C1], Internal (antibody)

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LC3B Antibody (antibody)

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MAP LC3beta (G-9) (antibody)

RRID:AB_11150489

This monoclonal targets MAP LC3beta (G-9)

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BRCA1 (C-20) (antibody)

RRID:AB_630944

This polyclonal targets BRCA1

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Anti-ATR, phospho (Ser428) Antibody, Unconjugated (antibody)

RRID:AB_2290281

This polyclonal targets ATR, phospho (Ser428)

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Phospho-p53 (Ser15) (16G8) Mouse mAb (antibody)

RRID:AB_331741

This monoclonal targets Phospho-p53 (Ser15)

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p53 (phospho S15) antibody (antibody)

RRID:AB_301090

This polyclonal targets p53 (phospho S15)

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Phospho-NF-κB p65 (Ser536) (93H1) Rabbit mAb (antibody)

RRID:AB_331284

This monoclonal targets NF-KappaB p65, phospho (Ser536)

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p27 (F-8) (antibody)

RRID:AB_628074

This monoclonal targets Epitope corresponds to AA 1-197 representing full length p27 of mouse origin

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Anti-p21waf1, clone HZ52 (antibody)

RRID:AB_11212534

This monoclonal targets p21waf1 clone HZ52

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FVB/N-Tg(Thy1-cre)1Vln/J (organism)

RRID:IMSR_JAX:006143

Mus musculus with name FVB/N-Tg(Thy1-cre)1Vln/J from IMSR.

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B6.129S2-Emx1tm1(cre)Krj/J (organism)

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Mus musculus with name B6.129S2-Emx1tm1(cre)Krj/J from IMSR.

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cyclin A (H-432) (antibody)

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