Nature June 2009 PMID 19516333

Histone H4 lysine 16 acetylation regulates cellular lifespan.

Weiwei Dang, Kristan K Steffen, Rocco Perry, Jean A Dorsey, F Brad Johnson, Ali Shilatifard, Matt Kaeberlein, Brian K Kennedy, Shelley L Berger

Mentions

8
Peak: 2 in Oct 2020
across 3 sources since Jun 2009

Extended reach

26,968
potential audience

Total likes

570

Video views

21,491

Mentions per month

Jun 2009 – Apr 2021

Where it's discussed

  • News4 articles
  • X / Twitter2 posts
  • YouTube2 videos

AI synopsis

What people are saying

Discussions mainly revolve around the role of SIRT1 in aging, with posts questioning the reasons behind its decline, such as 'Why does SIRT1 go down in aging & senescence?' and referencing related processes like autophagy and biochemistry. These comments demonstrate interest and engagement but are relatively surface-level, focusing on understanding rather than deep analysis or critique.

AgreementNeither agree nor disagree

The discussions do not explicitly agree or disagree with the publication, but they acknowledge the importance of sirtuins like SIRT1 in the context of aging.

InterestModerate interest

Participants show curiosity by asking why SIRT1 decreases during aging, indicating moderate interest in the topic.

EngagementModerate engagement

Posts include questions and brief commentaries that reflect some engagement, such as references to biological processes and concepts like senescence and autophagy.

ImpactNeutral impact

The overall impact appears moderate; the discussions highlight relevant biological mechanisms but do not suggest a radical shift in understanding or application.

Abstract in brief

  • The study discusses how epigenetic changes, specifically the acetylation of histone H4 lysine 16, influence cellular aging, focusing on the role of sirtuins like the yeast Sir2 enzyme in maintaining chromatin silencing and lifespan.
  • As yeast cells age, there is a decrease in Sir2 protein levels and an increase in H4 lysine 16 acetylation, leading to reduced chromatin silencing at subtelomeric regions, which impacts gene regulation and aging.
  • The balance between Sir2 deacetylase activity and the acetyltransferase Sas2 helps regulate lifespan by maintaining telomeric chromatin integrity, suggesting a conserved mechanism by which sirtuins influence aging through chromatin modifications.

Top posts

Most liked on X and Bluesky
Eleanor Sheekey
@EleanorSheekey · X

Why does SIRT1 go down in aging & senescence? https://t.co/igM8VXlxz7 via @YouTube #senescence #biochemistry #SIRT1 #scicomm #autophagy

Oct 15, 2020 · 7 likes · 4,911 followers View post →
Mathew Titus the Great
@mathewtitus · X

SIRT1 goes down in Aging & Senescence https://t.co/GRerDiAYsD https://t.co/Ft5sPJuwMn

Apr 4, 2021 · 527 followers View post →

All mentions

Mathew Titus the Great
@mathewtitus · X

SIRT1 goes down in Aging & Senescence https://t.co/GRerDiAYsD https://t.co/Ft5sPJuwMn

Apr 4, 2021 · 527 followers View post →
Eleanor Sheekey
@EleanorSheekey · X

Why does SIRT1 go down in aging & senescence? https://t.co/igM8VXlxz7 via @YouTube #senescence #biochemistry #SIRT1 #scicomm #autophagy

Oct 15, 2020 · 7 likes · 4,911 followers View post →
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