Graham J. Ray

ORCID: 0000-0002-1245-8428
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About
Contact & Profiles
Research Areas
  • CRISPR and Genetic Engineering
  • RNA and protein synthesis mechanisms
  • T-cell and B-cell Immunology
  • Advanced biosensing and bioanalysis techniques
  • Peroxisome Proliferator-Activated Receptors
  • Protein Degradation and Inhibitors
  • Cancer-related gene regulation
  • RNA Interference and Gene Delivery
  • Genetics, Aging, and Longevity in Model Organisms
  • RNA modifications and cancer
  • Pluripotent Stem Cells Research
  • Epigenetics and DNA Methylation
  • Genomics and Chromatin Dynamics
  • Cytomegalovirus and herpesvirus research

Howard Hughes Medical Institute
2020

Massachusetts Institute of Technology
2020

Whitehead Institute for Biomedical Research
2020

Broad Institute
2020

University of California, Berkeley
2016-2018

Innovative Genomics Institute
2016-2018

National Institutes of Health
2015

National Cancer Institute
2015

Abstract The Cas9 endonuclease can be targeted to genomic sequences by programming the sequence of an associated single guide RNA (sgRNA). For unknown reasons, activity these Cas9–sgRNA combinations varies widely at different loci and in cell types. Thus, disrupting genes polyploid lines or when using poorly performing sgRNAs require extensive downstream screening identify homozygous clones. Here we find that non-homologous single-stranded DNA greatly stimulates Cas9-mediated gene disruption...

10.1038/ncomms12463 article EN cc-by Nature Communications 2016-08-17

Peroxisomes are metabolic organelles that perform a diverse array of critical functions in human physiology. Traditional isolation methods for peroxisomes can take more than 1 h to complete and be laborious implement. To address this, we have now extended our prior work on rapid organellar via the development peroxisomally localized 3XHA epitope tag ("PEROXO-Tag") associated immunoprecipitation ("PEROXO-IP") workflow. Our PEROXO-IP workflow has excellent reproducibility, is easy implement,...

10.1016/j.isci.2020.101109 article EN cc-by-nc-nd iScience 2020-04-28

In mammals, the cytosine in CG dinucleotides is typically methylated producing 5-methylcytosine (5mC), a chemically less stable form of that can spontaneously deaminate to thymidine resulting T•G mismatched base pair. Unlike other eukaryotes efficiently repair this pair back C•G, 5mCG deamination mutagenic, sometimes TG dinucleotides, explaining depletion mammalian genomes. It was suggested new generate genetic diversity may be critical for evolutionary change. We tested conjecture by...

10.1093/gbe/evv205 article EN cc-by-nc Genome Biology and Evolution 2015-10-27

The majority of genetic variants associated with common human diseases map to enhancers, non-coding elements that shape cell type-specific transcriptional programs and responses specific extracellular cues 1-3 . In order understand the mechanisms by which variation contributes disease, systematic mapping functional enhancers their biological contexts is required. Here, we develop an unbiased discovery platform can identify for a target gene without prior knowledge native context. We used...

10.1101/091843 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2016-12-05

ABSTRACT Peroxisomes are metabolic organelles that perform a diverse array of critical functions in human physiology. Traditional isolation methods for peroxisomes can take more than one hour to complete and be laborious implement. To address this, we have now extended our prior work on rapid organellar via the development peroxisomally-localized 3XHA epitope tag (“PEROXO-Tag”) associated immunoprecipitation (“PEROXO-IP”) workflow. Our PEROXO-IP workflow has excellent reproducibility, is...

10.1101/2020.03.10.984948 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2020-03-11

Abstract Cas9 endonuclease can be targeted to genomic sequences by varying the sequence of single guide RNA (sgRNA). The activity these Cas9-sgRNA combinations varies widely at different loci and in cell types. Thus, disrupting genes polyploid lines, or using inefficient sgRNAs, require extensive downstream screening identify homozygous clones. We have found that linear, non-homologous oligonucleotide DNA greatly stimulates Cas9-mediated gene disruption absence homology-directed repair. This...

10.1101/040212 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2016-02-18
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