About
Passionate about genome-scale cell engineering.
Activity
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I am so excited to be at the Global Biofoundry Alliance 2024 (https://www.gba2024.org/) meeting in Deajeon Korea hosted by my fantastic colleagues at…
I am so excited to be at the Global Biofoundry Alliance 2024 (https://www.gba2024.org/) meeting in Deajeon Korea hosted by my fantastic colleagues at…
Liked by Leslie Mitchell
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Hope you will join Jenny Hunt (Wang), Ph.D at the World ADC conference to learn Aureka Biotechnologies, Inc. high-throughput platform to discover…
Hope you will join Jenny Hunt (Wang), Ph.D at the World ADC conference to learn Aureka Biotechnologies, Inc. high-throughput platform to discover…
Liked by Leslie Mitchell
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October 4 is always a special day, because the date abbreviation = my favorite gene Oct4! It’s been 10 years since my PhD work was submitted for…
October 4 is always a special day, because the date abbreviation = my favorite gene Oct4! It’s been 10 years since my PhD work was submitted for…
Liked by Leslie Mitchell
Experience
Education
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University of Ottawa
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Dissertation:
A systems level characterization of the Saccharomyces cerevisiae NuA4 lysine acetyltransferase. -
Dissertation:
The fate of duplicated regions of the Atlantic salmon (Salmo salar) genome -
Publications
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De novo assembly, delivery and expression of a 101 kb human gene in mouse cells
BioRxiv
Design and large-scale synthesis of DNA has been applied to the functional study of viral and microbial genomes. New and expanded technology development is required to unlock the transformative potential of such bottom-up approaches to the study of larger mammalian genomes. Two major challenges include assembling and delivering long DNA sequences. Here we describe a pipeline for de novo DNA assembly and delivery that enables functional evaluation of mammalian genes on the length scale of 100…
Design and large-scale synthesis of DNA has been applied to the functional study of viral and microbial genomes. New and expanded technology development is required to unlock the transformative potential of such bottom-up approaches to the study of larger mammalian genomes. Two major challenges include assembling and delivering long DNA sequences. Here we describe a pipeline for de novo DNA assembly and delivery that enables functional evaluation of mammalian genes on the length scale of 100 kb. The DNA assembly step is supported by an integrated robotic workcell. We assembled the 101 kb human HPRT1 gene in yeast, delivered it to mouse embryonic stem cells, and showed expression of the human protein from its full-length gene. This pipeline provides a framework for producing systematic, designer variants of any mammalian gene locus for functional evaluation in cells.
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Design of a synthetic yeast genome
Science
We describe complete design of a synthetic eukaryotic genome, Sc2.0, a highly modified Saccharomyces cerevisiae genome reduced in size by nearly 8%, with 1.1 megabases of the synthetic genome deleted, inserted, or altered. Sc2.0 chromosome design was implemented with BioStudio, an open-source framework developed for eukaryotic genome design, which coordinates design modifications from nucleotide to genome scales and enforces version control to systematically track edits. To achieve complete…
We describe complete design of a synthetic eukaryotic genome, Sc2.0, a highly modified Saccharomyces cerevisiae genome reduced in size by nearly 8%, with 1.1 megabases of the synthetic genome deleted, inserted, or altered. Sc2.0 chromosome design was implemented with BioStudio, an open-source framework developed for eukaryotic genome design, which coordinates design modifications from nucleotide to genome scales and enforces version control to systematically track edits. To achieve complete Sc2.0 genome synthesis, individual synthetic chromosomes built by Sc2.0 Consortium teams around the world will be consolidated into a single strain by "endoreduplication intercross." Chemically synthesized genomes like Sc2.0 are fully customizable and allow experimentalists to ask otherwise intractable questions about chromosome structure, function, and evolution with a bottom-up design strategy.
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Synthesis, debugging, and effects of synthetic chromosome consolidation: synVI and beyond
Science
We describe design, rapid assembly, and characterization of synthetic yeast Sc2.0 chromosome VI (synVI). A mitochondrial defect in the synVI strain mapped to synonymous coding changes within PRE4 (YFR050C), encoding an essential proteasome subunit; Sc2.0 coding changes reduced Pre4 protein accumulation by half. Completing Sc2.0 specifies consolidation of 16 synthetic chromosomes into a single strain. We investigated phenotypic, transcriptional, and proteomewide consequences of Sc2.0 chromosome…
We describe design, rapid assembly, and characterization of synthetic yeast Sc2.0 chromosome VI (synVI). A mitochondrial defect in the synVI strain mapped to synonymous coding changes within PRE4 (YFR050C), encoding an essential proteasome subunit; Sc2.0 coding changes reduced Pre4 protein accumulation by half. Completing Sc2.0 specifies consolidation of 16 synthetic chromosomes into a single strain. We investigated phenotypic, transcriptional, and proteomewide consequences of Sc2.0 chromosome consolidation in poly-synthetic strains. Another "bug" was discovered through proteomic analysis, associated with alteration of the HIS2 transcription start due to transfer RNA deletion and loxPsym site insertion. Despite extensive genetic alterations across 6% of the genome, no major global changes were detected in the poly-synthetic strain "omics" analyses. This work sets the stage for completion of a designer, synthetic eukaryotic genome.
Patents
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Versatile genetic assembly system (vegas) to assemble pathways for expression
Issued US US20160046972A1
More activity by Leslie
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Tackling the #innovatorsdilemma takes a village, a global village... for a 133 year old company, that village truly matters! From Bangalore to…
Tackling the #innovatorsdilemma takes a village, a global village... for a 133 year old company, that village truly matters! From Bangalore to…
Liked by Leslie Mitchell
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I'm thrilled to share that I'll be pitching Omios Biologics at the Life Science Summit https://lnkd.in/eURxd8HP on October 8th at the Alexandria…
I'm thrilled to share that I'll be pitching Omios Biologics at the Life Science Summit https://lnkd.in/eURxd8HP on October 8th at the Alexandria…
Liked by Leslie Mitchell
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I’m proud to introduce Florey Biosciences, a #biotech company spun out of the Wyss Institute at Harvard University, dedicated to engineering microbes…
I’m proud to introduce Florey Biosciences, a #biotech company spun out of the Wyss Institute at Harvard University, dedicated to engineering microbes…
Liked by Leslie Mitchell
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Wahoo and let’s go! I’m having a great first day at the Chan Zuckerberg Biohub New York and am excited for this next chapter! I’m back online and…
Wahoo and let’s go! I’m having a great first day at the Chan Zuckerberg Biohub New York and am excited for this next chapter! I’m back online and…
Liked by Leslie Mitchell
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Such a great time at the Women of Future Industries Fashion Show last Friday!
Such a great time at the Women of Future Industries Fashion Show last Friday!
Liked by Leslie Mitchell
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