Subtopic Deep Dive

PRMTs in DNA Damage Response
Research Guide

What is PRMTs in DNA Damage Response?

PRMTs in DNA Damage Response refers to the regulation of DNA repair pathways by protein arginine methyltransferases, particularly PRMT1 methylating MRE11 to control checkpoint responses and homologous recombination in cancer cells.

PRMT1 methylates MRE11 on arginine residues, essential for DNA damage checkpoint activation and repair (Boisvert et al., 2005, 221 citations). PRMT5 and other PRMTs also modify repair proteins like 53BP1, influencing non-homologous end joining and chemotherapy resistance. Over 10 papers from the list link these modifications to genome stability in tumors.

Curated Papers

Key Challenges

Why It Matters

PRMT1-mediated methylation of MRE11 enables DNA double-strand break repair, and its inhibition sensitizes cancer cells to genotoxic therapies (Boisvert et al., 2005). PRMT inhibitors target methylation in DNA repair, reducing tumor resistance to chemotherapy (Hwang et al., 2021; Kanıskan et al., 2014). These mechanisms explain variable responses to PARP inhibitors in BRCA-mutant cancers (Poulard et al., 2016).

Key Research Challenges

Specificity of PRMT Substrates

Identifying precise arginine sites on DNA repair proteins like MRE11 methylated by PRMT1 remains difficult due to overlapping PRMT activities. Proteomic methods reveal complexes but struggle with low-abundance modifications (Boisvert et al., 2003). Functional validation requires mutagenesis studies (Yu et al., 2011).

PRMT Inhibitor Selectivity

Developing selective inhibitors for PRMT1 and PRMT5 is challenging amid structural similarities with other PMTs. Current inhibitors lack potency against cancer-specific DNA repair contexts (Kanıskan et al., 2014). Clinical translation faces toxicity issues in normal cells (Hwang et al., 2021).

Linking Methylation to Cancer Outcomes

Correlating PRMT activity levels with DNA repair defects and chemotherapy resistance in patient tumors is limited by heterogeneous data. Studies show associations in breast cancer but need prospective validation (Gao et al., 2016; Poulard et al., 2016).

Essential Papers

A Proteomic Analysis of Arginine-methylated Protein Complexes

François‐Michel Boisvert, Jocelyn Côté, Marie‐Chloé Boulanger et al. · 2003 · Molecular & Cellular Proteomics · 356 citations

Arginine methylation is a post-translational modification that results in the formation of asymmetrical and symmetrical dimethylated arginines (a- and sDMA). This modification is catalyzed by type ...

Protein arginine methyltransferases: promising targets for cancer therapy

Jee Won Hwang, Yena Cho, Gyu‐Un Bae et al. · 2021 · Experimental & Molecular Medicine · 234 citations

Abstract Protein methylation, a post-translational modification (PTM), is observed in a wide variety of cell types from prokaryotes to eukaryotes. With recent and rapid advancements in epigenetic r...

Arginine methylation of MRE11 by PRMT1 is required for DNA damage checkpoint control

François‐Michel Boisvert, Ugo Déry, Jean‐Yves Masson et al. · 2005 · Genes & Development · 221 citations

The role of protein arginine methylation in the DNA damage checkpoint response and DNA repair is largely unknown. Herein we show that the MRE11 checkpoint protein is arginine methylated by PRMT1. M...

Minireview: Protein Arginine Methylation of Nonhistone Proteins in Transcriptional Regulation

Young‐Ho Lee, Michael R. Stallcup · 2009 · Molecular Endocrinology · 202 citations

Endocrine regulation frequently culminates in altered transcription of specific genes. The signal transduction pathways, which transmit the endocrine signal from cell surface to the transcription m...

Comprehensive identification of arginine methylation in primary T cells reveals regulatory roles in cell signalling

Vincent Geoghegan, Ailan Guo, David C. Trudgian et al. · 2015 · Nature Communications · 145 citations

Abstract The impact of protein arginine methylation on the regulation of immune functions is virtually unknown. Here, we apply a novel method—isomethionine methyl-SILAC—coupled with antibody-mediat...

Protein arginine methylation/demethylation and cancer

Coralie Poulard, Laura Corbo, Muriel Le Romancer · 2016 · Oncotarget · 134 citations

Protein arginine methylation is a common post-translational modification involved in numerous cellular processes including transcription, DNA repair, mRNA splicing and signal transduction. Currentl...

Selective Inhibitors of Protein Methyltransferases

H. Ümit Kanıskan, Kyle D. Konze, Jian Jin · 2014 · Journal of Medicinal Chemistry · 126 citations

Mounting evidence suggests that protein methyltransferases (PMTs), which catalyze methylation of histone and nonhistone proteins, play a crucial role in diverse biological processes and human disea...

Reading Guide

Foundational Papers

Read Boisvert et al. (2005) first for PRMT1 methylation of MRE11 in checkpoints, then Boisvert et al. (2003) for proteomic identification of methylated repair complexes.

Recent Advances

Study Hwang et al. (2021) for PRMT cancer therapy targets and Poulard et al. (2016) for methylation in DNA repair and oncogenesis.

Core Methods

Core techniques: methyl-SILAC proteomics (Geoghegan et al., 2015), GAR motif mutagenesis (Yu et al., 2011), and PRMT inhibitor screens (Kanıskan et al., 2014).

How PapersFlow Helps You Research PRMTs in DNA Damage Response

Discover & Search

Research Agent uses searchPapers and citationGraph to map PRMT1-MRE11 connections, starting from 'Arginine methylation of MRE11 by PRMT1' (Boisvert et al., 2005), revealing 221 citing papers on DNA repair. exaSearch queries 'PRMT5 53BP1 DNA damage cancer' for recent extensions, while findSimilarPapers expands to PRMT inhibitors (Hwang et al., 2021).

Analyze & Verify

Analysis Agent employs readPaperContent on Boisvert et al. (2005) to extract MRE11 arginine sites, then verifyResponse with CoVe checks claims against 50+ citing papers for checkpoint control accuracy. runPythonAnalysis processes proteomic data from Boisvert et al. (2003) via pandas to quantify methylated complexes, with GRADE scoring evidence strength on repair pathway impacts.

Synthesize & Write

Synthesis Agent detects gaps in PRMT5-53BP1 regulation via contradiction flagging across Poulard et al. (2016) and Yu et al. (2011). Writing Agent uses latexEditText for pathway diagrams, latexSyncCitations to integrate 10 papers, and latexCompile for publication-ready reviews; exportMermaid generates methylation-repair flowcharts.

Use Cases

"Analyze methylation sites in MRE11 from PRMT1 papers using stats."

Research Agent → searchPapers('PRMT1 MRE11') → Analysis Agent → readPaperContent(Boisvert 2005) → runPythonAnalysis(pandas count arginines, matplotlib motif plot) → researcher gets quantified site frequencies and visualizations.

"Write a review on PRMT inhibitors for DNA repair in cancer."

Synthesis Agent → gap detection(Hwang 2021, Kanıskan 2014) → Writing Agent → latexEditText(draft sections) → latexSyncCitations(10 papers) → latexCompile → researcher gets compiled LaTeX PDF with figures.

"Find code for PRMT proteomic analysis from papers."

Research Agent → searchPapers('arginine methylation proteomics') → Code Discovery → paperExtractUrls(Boisvert 2003) → paperFindGithubRepo → githubRepoInspect → researcher gets runnable SILAC-methyl analysis scripts.

Automated Workflows

Deep Research workflow scans 50+ papers on PRMT-DNA repair via searchPapers → citationGraph → structured report with GRADE-scored mechanisms from Boisvert et al. (2005). DeepScan applies 7-step CoVe to verify PRMT1 inhibitor efficacy claims (Kanıskan et al., 2014). Theorizer generates hypotheses on PRMT5-53BP1 synergies from Yu et al. (2011) and Poulard et al. (2016).

Try Doxa for PRMTs in DNA Damage Response Research

Frequently Asked Questions

What is the definition of PRMTs in DNA Damage Response?

PRMTs methylate arginine residues on DNA repair proteins like MRE11 to regulate checkpoint activation and homologous recombination in cancer cells (Boisvert et al., 2005).

What are key methods for studying PRMT methylation?

Proteomic analysis with methyl-SILAC identifies arginine-methylated complexes (Boisvert et al., 2003; Geoghegan et al., 2015). Mutagenesis of GAR motifs tests functional roles in DNA repair (Yu et al., 2011).

What are key papers on this topic?

Foundational works include Boisvert et al. (2005, 221 citations) on PRMT1-MRE11 and Boisvert et al. (2003, 356 citations) on methylated complexes. Recent: Hwang et al. (2021, 234 citations) on PRMTs as cancer targets.

What are open problems in PRMT-DNA repair research?

Challenges include selective PRMT inhibitors for tumors (Kanıskan et al., 2014) and linking methylation to chemotherapy resistance in patients (Poulard et al., 2016).