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Prachee Avasthi
CSO, Arcadia Science
Prachee is the co-founder and CSO of Arcadia Science. She comes from the Geisel School of Medicine at Dartmouth where she is an Associate Professor of Biochemistry and Cell Biology. Prachee is also the President of ASAPbio.
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1 pub in other communities.
Prachee has published in other PubPub communities. Click to go to their full profile.
Published: May 31, 2022
Building on the open-source platform PubPub, we’re sharing the first iteration of our publishing website. In addition to posting our first set of research pubs, we’re documenting our progress in developing this new system for sharing science and hope you’ll provide feedback.
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Published: Aug 23, 2022
Cells can be highly motile, moving in and out of a microscope’s field of view. Understanding complex life cycles is difficult without continuous observation. To overcome this challenge, we’ve developed a 3D-printed microchamber device to confine cells for long-term visualization.
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Supplements (7): 3D-printing files - NIH 3D Print Exchange • Code v1.1 - GitHub • Imaging data - C. steinii cyst rotation - Zenodo • Imaging data - C. steinii early encystment - Zenodo • Imaging data - C. steinii in a 384-well plate or microwells - Zenodo • Imaging data - C. steinii reanimation experiment - Zenodo • Imaging data - T. rostrata timelapse - Zenodo
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Published: Oct 14, 2022
Quantifying movement is a powerful window into cellular functions. However, cells can generate movement through a variety of complex mechanisms. Here, we generate a flexible framework for comparing an especially variable type of motility: cellular crawling.
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Supplements (1): Code v1.1 - GitHub
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Published: Dec 01, 2022
The process of deciding whether a candidate actin homolog represents a “true” actin is tricky. We propose clear and data-driven criteria to define actin that highlight the functional importance of this protein while accounting for phylogenetic diversity.
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Supplements (2): Code v2.0 - GitHub • Data outputs - Zenodo
Published: Dec 04, 2022
Long protrusions from several microalgal species appear to help cells move, capture prey, transport mitochondria and chloroplasts, and more. Are they filopodia that evolved abilities more like other actin- or microtubule-based structures, or are they something new?
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Published: Mar 29, 2023
Treating P. tricornutum cells with serine endopeptidases or certain cytoskeletal inhibitors induces the formation of cell wall-free protoplasts and suggests a novel role for actin and myosin in preventing protoplast formation.
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Published: Jun 15, 2023
Even with many tools available, categorizing species is tough. We used data from Raman spectroscopy, a form of label-free imaging, to infer phylogenetic patterns among several dozen diverse microbial taxa, offering a non-destructive and rapid way to dissect species relationships.
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Supplements (1): Code v1.0 - GitHub
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Published: May 03, 2023
Constraining motile microorganisms for live imaging often requires costly microfluidics or optical traps to keep them in view. We used patterned stamps and agar to make versatile, inexpensive “microchambers” and offer a way to predict the right chamber size for a given organism.
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Published: Jul 20, 2023
We are interested in neuroactive metabolites that influence animal behavior. Some fungi have horizontally transferred neuroactive metabolite pathways between species. We used a horizontal gene transfer detection pipeline to screen for novel fungal genes tied to neuroactivity.
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Supplements (1): Code v1.0 - GitHub
Published: May 31, 2022
Researchers studying any organism with genomic data can follow this simple walkthrough to create sets of barcoded probes for the multiplexed FISH technique called MERFISH. We’re sharing interactive code notebooks that can be adapted to design barcoded FISH probes for any species.
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Published: Sep 29, 2023
We investigated protein structure predictions as an alternative to protein sequence homology for comparing single-cell RNA-seq data across species.
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Supplements (2): Code v0.0.1 - GitHub • Related data - Zenodo
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Published: Dec 20, 2023
Some human proteins are encoded by genes with repetitive sequences, which, if they expand, damage the nervous system and cause disorders like Huntington’s disease. We found animals with similar proteins that have more repeats than we’ve ever seen in healthy people.
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Published: Sep 22, 2023
It is commonly assumed that phenotypes arise from the cumulative effects of many independent genes. However, we show that by accounting for dependent and nonlinear biological relationships, we can generate models that predict phenotypes with great accuracy.
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Supplements (2): Data - Zenodo • Code v1.0.1 - GitHub
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Published: Sep 29, 2023
The ProteinCartography pipeline identifies proteins related to a query protein using sequence- and structure-based searches, compares all protein structures, and creates a navigable map that can be used to look at protein relationships and make hypotheses about function.
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Supplements (3): ProteinCartography v0.5.0 - GitHub • ProteinCartography v0.4.2 - GitHub • Data - Zenodo
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Published: Oct 06, 2023
Only some bacteria accumulate substantial amounts of polyphosphate (polyP). We thought that despite sequence divergence, polyP synthesis enzymes in these bacteria might have similar structures. We found this is sometimes true but doesn’t fully explain the phenomenon.
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Replies (1): How can we identify the common molecular signatures underlying polyphosphate accumulation?
Supplements (2): Data - Zenodo • Code - GitHub
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Published: Jun 23, 2023
We’re crossing C. reinhardtii and C. smithii algae for high-throughput genotype-phenotype mapping. In preparation, we’re comparing the parents to uncover unique species-specific phenotypes.
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Published: Dec 02, 2023
Oligo pools can contain millions of unique sequences, but they’re limited by length, error rate, and bias. We propose methods to scalably screen synthetic DNA libraries, so an individual researcher can obtain thousands of error-free synthetic DNA assemblies at low cost.
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Published: Dec 02, 2023
Machine learning is a powerful tool for classifying images in a time series, such as the developmental stages of embryos. We built a classifier using only bright-field microscopy images to infer nematode embryonic stages at high throughput.
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Supplements (2): Code v1.0 - GitHub • Data- Time-course images of nematode embryos - Zenodo
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Published: Feb 14, 2024
We've applied ProteinCartography, a tool for protein family exploration, to the well-studied actin family. We’re able to categorize actins and related proteins into distinguishable functional buckets, and we uncovered some surprising hypotheses that could prompt further study.
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Supplements (2): Code v1.0 - GitHub • Data - Zenodo
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Published: Mar 06, 2024
We outline a comparative approach to investigate protein function by correlating the presence or absence of a protein with species-level phenotypes. We applied this strategy to a novel actin isoform in fungi but didn’t find an association with any of the phenotypes we considered.
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Supplements (2): Data - Zenodo • Code v1.0 - GitHub
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Published: Mar 05, 2024
We’re seeking feedback on NovelTree, our modular phylogenomic workflow. We’d appreciate your insights into how we can improve gene family inference, incorporate protein structure predictions, and expand to whole-genome data as input.
Published: Mar 29, 2024
How can we measure the true impact of science? We're seeking feedback on indicators of the utility and rigor of publications beyond traditional journal metrics. Your input will help shape the future of our publishing experiment.
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Published: May 31, 2024
To test its utility in analyzing biological samples, we built an open-source Raman spectrometer and collected spectra from chilis, beer, and algae. We could stratify samples, classify replicates, and link spectra with quantitative traits of beer (ABV) and chilis (perceived heat).
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Supplements (1): Code and data - GitHub
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Published: May 31, 2024
We’re using the well-studied superfamily of small monomeric GTPases, the Ras GTPases, to evaluate our structure-based clustering tool, ProteinCartography. We’re seeking feedback on working with this protein family and determining which individual proteins to study.
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Supplements (1): Data - Zenodo
How can we biochemically validate protein function predictions with the deoxycytidine kinase family?
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Published: May 31, 2024
The human deoxycytidine kinase, a member of the nucleoside salvage pathway, has been studied extensively. We’ll use this family to assess our structure-based protein clustering tool, ProteinCartography. We’d love feedback on how we might work with this protein for validation.
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Supplements (1): Data - Zenodo
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Published: May 31, 2024
We aim to validate ProteinCartography, a tool for structure-based protein clustering, by evaluating two foundational hypotheses: that proteins within a cluster have similar functions and proteins in different clusters have differing functions.
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Published: Jun 13, 2024
Two years into our publishing experiment, we’ve learned a lot. We built internal processes that worked but inadvertently decreased scientists' agency and creativity. Now, we’re minimizing process in an effort to empower our scientists to share their work how they see fit.
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Published: Aug 01, 2024
Many protein prediction and design models rely on evolutionary comparisons. We show that popular databases are phylogenetically biased, influencing the statistical utility of the known protein universe in important ways.
Connections
Supplements (1): Code v1.0 - GitHub
