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HDACs in Gene Expression Regulation
Research Guide

What is HDACs in Gene Expression Regulation?

HDACs are enzymes that remove acetyl groups from histone lysine residues, promoting chromatin condensation and repressing gene transcription through recruitment to promoters by corepressors like Sin3 and NCoR.

Classical HDACs, characterized by de Ruijter et al. (2003) with 3060 citations, function in zinc-dependent deacetylation within chromatin contexts. Seto and Yoshida (2014, 1905 citations) detail 18 human HDACs targeting histones and non-histone proteins. Zhang et al. (1999, 1085 citations) identified the NuRD complex linking HDACs to nucleosome remodeling and DNA methylation.

Curated Papers

Key Challenges

Why It Matters

HDAC-mediated repression silences developmental and cell cycle genes, with disruptions driving cancer via epigenetic changes (Sharma et al., 2009, 2520 citations). Inhibitors like valproic acid target HDACs to activate Wnt signaling and gene expression (Phiel et al., 2001, 1719 citations). Minucci and Pelicci (2006, 2181 citations) highlight HDACi potential in cancer therapy by reversing aberrant silencing, while Li and Seto (2016, 1225 citations) connect HDAC dysregulation to tumor progression.

Key Research Challenges

Mapping HDAC recruitment sites

Identifying precise promoter binding via corepressors like Sin3 and NCoR requires high-resolution ChIP-seq. Zhang et al. (1999) showed NuRD-HDAC association with DNA methylation, but genome-wide dependencies remain incomplete. CRISPR screens reveal context-specific epigenomes (context from topic).

Distinguishing HDAC family functions

18 HDACs use zinc- or NAD+-dependent mechanisms with overlapping substrates (Seto and Yoshida, 2014). de Ruijter et al. (2003) characterized classical family, yet isoform-specific roles in repression need clarification. Inhibitor selectivity challenges therapy design (West and Johnstone, 2014).

Quantifying deacetylation impacts

Measuring transcriptional changes post-HDAC inhibition involves dynamic epigenome tracking. Struhl (1998) linked acetylation to activation, but repression metrics lag. Eckschlager et al. (2017) note balance between HATs and HDACs controls expression.

Essential Papers

Histone deacetylases (HDACs): characterization of the classical HDAC family

Annemieke J.M. de Ruijter, Albert H. Gennip, Huib N. Caron et al. · 2003 · Biochemical Journal · 3.1K citations

Transcriptional regulation in eukaryotes occurs within a chromatin setting, and is strongly influenced by the post-translational modification of histones, the building blocks of chromatin, such as ...

Epigenetics in cancer

Shilpa Sharma, T. K. Kelly, P A Jones · 2009 · Carcinogenesis · 2.5K citations

Epigenetic mechanisms are essential for normal development and maintenance of tissue-specific gene expression patterns in mammals. Disruption of epigenetic processes can lead to altered gene functi...

Histone deacetylase inhibitors and the promise of epigenetic (and more) treatments for cancer

Saverio Minucci, Pier Giuseppe Pelicci · 2006 · Nature reviews. Cancer · 2.2K citations

Erasers of Histone Acetylation: The Histone Deacetylase Enzymes

Ed Seto, Minoru Yoshida · 2014 · Cold Spring Harbor Perspectives in Biology · 1.9K citations

Histone deacetylases (HDACs) are enzymes that catalyze the removal of acetyl functional groups from the lysine residues of both histone and nonhistone proteins. In humans, there are 18 HDAC enzymes...

Histone acetylation and transcriptional regulatory mechanisms

Kevin Struhl · 1998 · Genes & Development · 1.8K citations

More than 30 years ago, Vincent Allfrey proposed that histone acetylation was associated with transcriptional activity in eukaryotic cells (Allfrey et al. 1964; Pogo et al. 1966). Subsequently, ace...

Histone Deacetylase Is a Direct Target of Valproic Acid, a Potent Anticonvulsant, Mood Stabilizer, and Teratogen

Christopher J. Phiel, Fang Zhang, Eric Yi‐Hsiu Huang et al. · 2001 · Journal of Biological Chemistry · 1.7K citations

Valproic acid is widely used to treat epilepsy and bipolar disorder and is also a potent teratogen, but its mechanisms of action in any of these settings are unknown. We report that valproic acid a...

New and emerging HDAC inhibitors for cancer treatment

Alison C. West, Ricky W. Johnstone · 2014 · Journal of Clinical Investigation · 1.3K citations

Epigenetic enzymes are often dysregulated in human tumors through mutation, altered expression, or inappropriate recruitment to certain loci. The identification of these enzymes and their partner p...

Reading Guide

Foundational Papers

Start with de Ruijter et al. (2003, 3060 citations) for HDAC family basics, Struhl (1998, 1815 citations) for acetylation-regulation links, and Zhang et al. (1999, 1085 citations) for NuRD complex core.

Recent Advances

Study Seto and Yoshida (2014, 1905 citations) for enzyme mechanisms, Li and Seto (2016, 1225 citations) for cancer roles, and West and Johnstone (2014, 1339 citations) for inhibitor advances.

Core Methods

Core techniques include ChIP-seq for binding, CRISPR for functional screens, co-IP for complexes, and HDAC assays measuring deacetylation kinetics.

How PapersFlow Helps You Research HDACs in Gene Expression Regulation

Discover & Search

Research Agent uses searchPapers('HDACs Sin3 NCoR recruitment') to find 100+ papers like Zhang et al. (1999) on NuRD, then citationGraph to map de Ruijter et al. (2003, 3060 citations) influencers, and findSimilarPapers for ChIP-seq studies.

Analyze & Verify

Analysis Agent runs readPaperContent on Seto and Yoshida (2014) to extract 18 HDAC mechanisms, verifies claims with CoVe against Sharma et al. (2009), and uses runPythonAnalysis for plotting deacetylation kinetics from Phiel et al. (2001) data with GRADE scoring for evidence strength.

Synthesize & Write

Synthesis Agent detects gaps in isoform-specific repression from Li and Seto (2016), flags contradictions between Struhl (1998) and recent inhibitors, then Writing Agent applies latexEditText, latexSyncCitations for Minucci (2006), and latexCompile for reports with exportMermaid chromatin diagrams.

Use Cases

"Plot HDAC inhibition dose-response from valproic acid papers"

Research Agent → searchPapers → Analysis Agent → runPythonAnalysis (pandas/matplotlib on Phiel et al. 2001 data) → researcher gets publication-ready dose-response curve with statistics.

"Draft review on NuRD complex HDAC roles with citations"

Synthesis Agent → gap detection → Writing Agent → latexEditText + latexSyncCitations (Zhang 1999) + latexCompile → researcher gets compiled LaTeX PDF manuscript.

"Find code for ChIP-seq HDAC binding analysis"

Research Agent → paperExtractUrls → Code Discovery → paperFindGithubRepo → githubRepoInspect → researcher gets runnable pipelines for epigenome mapping.

Automated Workflows

Deep Research workflow scans 50+ HDAC papers via searchPapers → citationGraph → structured report on repression mechanisms from de Ruijter (2003). DeepScan applies 7-step CoVe to verify NuRD findings (Zhang 1999) with GRADE checkpoints. Theorizer generates hypotheses on HDACi synergies from Minucci (2006) and West (2014).

Try Doxa for HDACs in Gene Expression Regulation Research

Frequently Asked Questions

What defines HDACs in gene regulation?

HDACs remove acetyl groups from histones, condensing chromatin to repress transcription via corepressors (de Ruijter et al., 2003; Seto and Yoshida, 2014).

What are key methods for studying HDAC recruitment?

ChIP-seq maps binding, CRISPR screens identify dependencies, and co-IP reveals corepressor complexes like NuRD (Zhang et al., 1999).

Which papers define classical HDAC family?

de Ruijter et al. (2003, 3060 citations) characterizes zinc-dependent HDACs; Seto and Yoshida (2014, 1905 citations) details 18 enzymes.

What open problems exist in HDAC research?

Isoform-specific functions, genome-wide repression maps, and selective inhibitor impacts on non-histone targets remain unresolved (Li and Seto, 2016).