Josh Tycko

Systematic discovery of protein functions in human cells to understand gene regulation and enable genetic medicine

Research areas




Gene and chromatin regulation


We discovered transcriptional effector domains in 600 human proteins and shed new light on the evolution of major transcription factor families, like KRAB and Hox, while also engineering improved activator and repressor domains for synthetic biology.




Gene delivery


We identified novel recombinases from bacteriophages that can integrate large DNA sequences into the human genome. Previously, we used AAV vectors to deliver antibody genes as a way to prevent RSV infection.




Genetic and epigenetic editing


We built and used CRISPR tools to functionally investigate the non-coding genome. We also developed new biochemical, cellular, and computational approaches to measure, model, and mitigate CRISPR off-target effects to make safer therapies.



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