Between the Genes: The Genomics of Gene Regulation
Vast tracts of non-coding genomic DNA separate the tiny portions of the human genome that code for our genes. Scattered throughout this non-coding DNA are enhancers — short DNA sequences that control when, where, and to what extent the genes are transcribed. Enhancers orchestrate the intricate patterns of gene expression that direct normal development and physiology in all organisms. The importance of enhancers is underscored by the fact that the majority of disease-causing variants in the human genome reside not in but between the genes, where they disrupt normal gene expression, in part by interfering with the function of enhancers.
Because of their importance in development and disease, we are trying to understand the DNA sequence features that control the activity and specificity of enhancers and other cis-regulatory elements. We take a multidisciplinary approach to this problem, employing both experimental and computational approaches borrowed from genetics, genomics, systems biology, synthetic biology, biophysics, computer science, and statistical physics. Ultimately, we hope to produce quantitative models that accurately identify new regulatory sequences in the genome and predict the consequences of mutations in these elements. Such models will be critical tools for understanding normal development, as well as diseases caused by non-coding mutations.
Positions
The Cohen Lab is currently seeking motivated postdocs. Interested applicants should contact Barak with a cover letter and CV.
Recent Posts
| 2024-01-09 | Congrats, James! |
| 2023-10-23 | Fourth Cohen Research Conference |
| 2023-05-29 | Goodbye Ryan, Avi, and Kai! |
| 2023-05-09 | Well done, Kai! |
| 2023-05-04 | Congratulations Avi! |
Recent Preprints
Selected Publications
- "The origins and functional effects of postzygotic mutations throughout the human life span" (Science, 2023)
- "A single-cell massively parallel reporter assay detects cell-type-specific gene regulation" (Nature Genetics, 2023)
- "A massively parallel reporter assay dissects the influence of chromatin structure on cis-regulatory activity" (Nature Biotechnology, 2019)
- "A Simple Grammar Defines Activating and Repressing cis-Regulatory Elements in Photoreceptors" (Cell Reports, 2016)
- "Single Nucleotide Variants in Transcription Factors Associate More Tightly with Phenotype than with Gene Expression" (PLOS Genetics, 2014)
- "A Computational Framework for Analyzing Stochasticity in Gene Expression" (PLOS Computational Biology, 2014)
- "Massively parallel in vivo enhancer assay reveals that highly local features determine the cis-regulatory function of ChIP-seq peaks" (PNAS, 2013)
- "Complex effects of nucleotide variants in a mammalian cis-regulatory element" (PNAS, 2012)
- "The cis-Regulatory Logic of Hedgehog Gradient Responses: Key Roles for Gli Binding Affinity, Competition, and Cooperativity" (Science Signaling, 2011)
- "Analysis of combinatorial cis-regulation in synthetic and genomic promoters" (Nature, 2009)
- "Genetic Interactions Between Transcription Factors Cause Natural Variation in Yeast" (Science, 2009)
- "The strength of selection on ultraconserved elements in the human genome" (American Journal Of Human Genetics, 2007)
- "Finding functional features in Saccharomyces genomes by phylogenetic footprinting" (Science, 2003)