Quinn Cowan, PhD
@Quinn_Cowan_sci
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Genome editor | Biochemistry and Molecular Biophysics PhD | Conklin lab @GladstoneInst | Previously @KomorLab @UCSanDiego 🧬🔬
La Jolla, San Diego
Joined May 2019
Excited my PhD work is out now @NatureBiotech! We report Multiplexed Orthogonal Base Editor (MOBE) systems: tools to simultaneously install distinct point mutations. MOBEs introduce co-occurring genetic variants (polygenic disease, haplotypes)🧬 🧵⬇️ 1/
nature.com
Nature Biotechnology - Multiplexed orthogonal base editing systems introduce different point mutations at two loci simultaneously.
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Check out MitoScribe, our new preprint led by @Linhan_W: https://t.co/rvNOSaMily... It's an analog molecular recorder that uses neutral base edits to the mitochondrial genome to store info about historical signaling in a cell. Single cell resolution at scale (see next post)!
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1/10 Today in @ScienceMagazine in collaboration with @liugroup we report the development of a laboratory-evolved CRISPR-associated transposase (evoCAST) that supports therapeutically relevant levels of RNA-programmable gene insertion in human cells. https://t.co/y2DqXZzY1R
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The Conklin Lab is hiring! We are seeking a Research Associate I to support ongoing projects focused on DNA repair and genome editing, particularly using motor neurons as a model system. Apply Here: https://t.co/30Ct9hQ3xL
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Gene syntax defines supercoiling-mediated transcriptional feedback https://t.co/BjJA77j9Y7
#biorxiv_synbio
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Genome editing with the HDR-enhancing DNA-PKcs inhibitor AZD7648 causes large-scale genomic alterations https://t.co/pKEjQMa9XX
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Today we report Evo, a generalist foundation model for biology, on the cover of @ScienceMagazine. Trained on billions of DNA nucleotides, Evo was designed to capture two key aspects of biology: the multi-modality of the central dogma and the multi-scale nature of evolution.
A new Science study presents “Evo”—a machine learning model capable of decoding and designing DNA, RNA, and protein sequences, from molecular to genome scale, with unparalleled accuracy. Evo’s ability to predict, generate, and engineer entire genomic sequences could change the
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Excited to share our new system for evolving eVLPs with improved production and protein delivery efficiencies! Grateful to @davidrliu and @liugroup for support throughout this study, and special thanks to co-authors Meirui An and @paulchenz for their contributions!
Today we report in @NatureBiotech a system for the laboratory evolution of engineered virus-like particles (eVLPs) that enables the discovery of eVLP variants with desired properties, including improved production and delivery potency. 1/13 PDF: https://t.co/OKvvoawP9n
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Attention gene editors! We are searching for faculty in gene editing (broadly defined) at UC Irvine:
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So you want to engineer your hiPSCs, but targeting DNA payloads requires multiple slow, inefficient steps for each construct. What if we could accomplish multi-site integration seamlessly? 🚨Introducing STRAIGHT-IN Dual! 🧵 (1/n) Link: https://t.co/4BKAf4Or90
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*Efficient PAMless base editing in patient-derived HSPCs* 🧬🖌️ https://t.co/UwjoM3u1yK For a few years now, we've been collaborating with clinical experts to develop genome editing-based treatments for genetic diseases. It has been a great fortune to work with, and learn from,
science.org
Versatile PAMless CRISPR base editors enable efficient and precise therapeutic correction of CGD mutations in hematopoietic stem and progenitor cells.
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Our latest paper is out! In collaboration with @DrAnneCarpenter, we conducted a systematic high-content screen to understand the role of protein mislocalization in diverse human disorders. 1/
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Saisha loves chess and singing. She is also affected by Charcot-Marie-Tooth disease, a genetic neuropathy that causes progressive damage to nerves in her legs and arms. In 2023, Saisha and her parents visited Gladstone. Read more: https://t.co/AWU5P4mbIT
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Check out our latest study on the DNA polymerase theta (Polθ), a precision oncology target for HDR-deficient cancers. Our work uncovers the inhibitory mechanism of a potent Polθ inhibitor using cryoEM, accelerating rational drug development strategies: https://t.co/ctvAprYhAI
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Having a hard time with #CRISPR HDR? Your cells might be fighting against you! TREX1 nuclease, high in some cells, eats up HDR donor templates. Check out our paper in @NatureBiotech for the story & ways to improve HDR. https://t.co/03GokR65LA With @karasuerman1 & @J_Maciejowski
nature.com
Nature Biotechnology - Homologous recombination in CRISPR–Cas9 genome editing is increased by blocking an exonuclease activity.
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Excited to share 'frugal' CRISPRkit, a gene editing tool for K-12 education! Developed almost entirely by high school and undergrad students, led by Marvin & Matthew, this kit brings hands-on CRISPR experiments to classrooms to explore genome engineering without equipment. (1/2)
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Research Highlight by @madhuramukho: Multiplexed Orthogonal Base Editor (MOBE) systems developed by @komorlab, @quinn_cowan_sci & colleagues is a suite of tools that use RNA aptamer systems to enable simultaneous distinct point mutations at different loci. https://t.co/d5pswLEUfK
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Check out this great summary of our work "MOBE: A Base Editor That Multitasks without Mix-ups" by @TheScientistLLC @aparnanathan featuring @sahakris @KomorLab 🧑🔬🧪@UCSDChemBiochem @UCSDPhySci
the-scientist.com
A new system for simultaneous genomic edits could unlock better models of complex diseases.
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Thank you @naturemethods @madhuramukho for highlighting our research: Development of Multiplexed Orthogonal Base Editor (MOBE) systems! 🧬@KomorLab @UCSDChemBiochem @UCSDPhySci
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So excited to share one of the final works from my PhD in @SethShipman’s lab with @Asim_g_Khan and @oso_de_antojos, where we used high-throughput libraries and machine learning to create design rules for retron gene editors:
biorxiv.org
The bacterial retron reverse transcriptase system has served as an intracellular factory for single-stranded DNA in many biotechnological applications. In these technologies, a natural retron...
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