PhD candidate in Fei Chen's lab @insitubiology @BBS_Harvard @broadinstitute | measuring and perturbing tissues | prev: @UNB 🇨🇦

Cambridge, MA
Joined February 2016
We found a surprisingly large technical artifact hiding in a widely-used scRNA-seq technology. In all Flex v1 datasets we’ve analyzed, we see hundreds of DE genes between probe set barcodes. More on why this matters and what to do about it below: biorxiv.org/content/10.64898… (1/n)
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Jackson Weir retweeted
I’m excited to share that I’ll be joining @Columbia in the CS Department as an Assistant Professor in January 2027, in New York City. My lab will work on advancing causality, AI, experimental design, and biomedical applications. I’ll be taking on PhD students and recruiting postdocs. If you’re interested in working with me, consider applying to the CS PhD program this fall or reach out at [email protected].
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Check out our newest spatial lineage tracing paper! Fun collaboration with @FD_Camargo's lab. Congrats to Joyce and @sundakao for leading this!
A central limitation of cellular barcoding analyses has been the loss of native spatial context. With @insitubiology, we developed an adaptable platform for multiclonal lineage analysis that links clonal history to spatially resolved gene expression. cell.com/cell-stem-cell/full…
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Generative model for subcellular protein location, congrats @SandeepKambham2!!
I'm excited to share our new preprint "Vermeer: Autoregressive generative modeling of microscopy predicts protein localization," a collaboration between @MSFTResearch and @insitubiology! Preprint: biorxiv.org/content/10.64898… Protein localization is fundamental to protein function, but experimental imaging, a key technique to study localization, cannot scale to the entire human proteome across all biological contexts. To address this challenge, we introduce Vermeer, an autoregressive generative model trained on Human Protein Atlas data @ProteinAtlas. Vermeer synthesizes fluorescence microscopy images of proteins conditioned on cell morphology reference stains and protein sequence embeddings (ESM-C). Vermeer can leverage latent information about protein localization in the ESM embeddings to generalize to proteins the model has never seen during training. (1/n)
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Congrats Jiaqi!
1/ Excited to share our preprint on the Cancer Immunotherapy Machine Learning Competition: broad.io/MLC-2023 - the first of the ongoing @SchmidtCenter Cell Perturbation Prediction Challenge (CPPC) series. Here are some key points! 🧵👇
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I spun up a fresh claude code session to test this! I fed my coding agent the original dataset that made us think something was off and monitored to see how much prompting the agent would need before it became similarly suspicious. (1/n)
Could AI agents have found this kind of artifact? And if so why have they not found such issues so far? Has anyone tried "Find cryptic issues in this data from a new platform". Will it find novel artifacts like this one? Folks developing new assays & platforms should try this.
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But it didn't seem to have this "feeling" that something was off with the DE genes in the same way that we did. Perhaps with more of the relevant biology pumped into context, it would have. And maybe a more bioinformatics-specialized agent would have raised some red flags. (9/n)
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My feeling is that agents are great for many things and have massively changed the way I do science. But I think they're still not great at catching subtle oddities in relatively open-ended data exploration without very clear prompting from the user. (10/n)
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Huge thanks to @CalebLareau, @Ben_G_Cooper, and @insitubiology for very helpful conversations and to @pdhsu for access to the raw data from the Virtual Cell Challenge. (18/n)
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Finally, big thank you to @YonitKrebs for being an awesome co-first author to explore this artifact alongside and to Fei for always being such a great mentor! (19/n)
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