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Indra

@indrasingh.bsky.social
83 followers 250 following 27 posts

Aging | Leukemia | HSCs heterogeneity | lineage tracing | Chromatin

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Nature @nature.com · 01/06/2026
Bad experiences with supervisors are common among early-career researchers and one of the leading reasons they leave academia go.nature.com/4dTTEgr
go.nature.com
Poor supervision is pushing young researchers out of academia
A survey finds that academic supervisors can have a huge impact on their students’ mental health.
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Indra @indrasingh.bsky.social · 14/02/2026
Been a while, finished my PhD last March, moved to Boston in April, and excited about starting as a postdoc in the Buenrostro lab at the Broad. I will be continuing within hematopoiesis, this time asking how psychosocial stress and resultant endocrine signalling shape HSC fate.
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Indra @indrasingh.bsky.social · 14/02/2026
Come join us 🙂 The Buenrostro lab at the Broad is looking for a few Research Associates to start ~Summer 2026. If you’re comfortable with rodents, excited about single-cell tech, and weirdly into hematopoiesis… you’ll fit right in. www.buenrostrolab.com
buenrostrolab.com
Buenrostro Lab
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Indra @indrasingh.bsky.social · 14/02/2026
Grant writing is such a humbling experience, you read enough to think you can write… then you start writing, just to realise, how reading more might not be a bad idea too, lol..
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Reposted by Indra
Nature @nature.com · 24/09/2025
Nature research paper: Basal cell of origin resolves neuroendocrine–tuft lineage plasticity in cancer go.nature.com/3ViRTAP
go.nature.com
Basal cell of origin resolves neuroendocrine–tuft lineage plasticity in cancer - Nature
Basal cells, rather than neuroendocrine cells, have been identified as the probable origin of small cell lung cancer and other neuroendocrine–tuft cancers, explaining neuroendocrine–tuft heterogeneity and offering new perspectives for targeting lineage plasticity.
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Elizabeth McKenna @elizsmckenna.bsky.social · 24/09/2025
Now online in Cancer Discovery @aacrjournals.bsky.social: Development and Prospective Validation of a Cell-free DNA-based Model for the Early Detection of Pancreatic Cancer - by Xiuchao Wang, Hongwei Wang, Meng Zhang, Jun Yu, Chuntao Gao, Yunfeng Cui, Jihui Hao, et al. doi.org/10.1158/2159...
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Leif S. Ludwig @leifludwig.bsky.social · 24/09/2025
🚨 New preprints from our lab!
First, we introduce Cryo-mtscATAC-seq, led by Maren (@ms-maren.bsky.social ), enabling high-throughput clonal tracing from frozen human samples by isolating nuclei with their mitochondria (“CryoCells”).
👉 www.biorxiv.org/content/10.1...
biorxiv.org
Cryo-mtscATAC-seq for single-cell mitochondrial DNA genotyping and clonal tracing in archived human tissues
High-throughput clonal tracing of primary human samples relies on naturally occurring barcodes, such as somatic mitochondrial DNA (mtDNA) mutations detected via single-cell ATAC-seq (mtscATAC-seq). Fr...
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Reposted by Indra
Nature Biotechnology @natbiotech.nature.com · 23/05/2025
EPI-Clone is a transgene-free lineage tracing method that uses single-cell DNA methylation analysis to track hematopoietic stem cell clones over time #NBThighlight www.nature.com/articles/s41...
nature.com
Clonal tracing with somatic epimutations reveals dynamics of blood ageing - Nature
The discovery that DNA methylation of different CpG sites can serve as digital barcodes of clonal identity led to the development of EPI-Clone, an algorithm that enables single-cell lineage tracing th...
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Nature Biotechnology @natbiotech.nature.com · 02/04/2025
CRISPRai simultaneously activates and represses two genes in single cells go.nature.com/4apFU9q rdcu.be/efe0E
go.nature.com
Bidirectional epigenetic editing reveals hierarchies in gene regulation - Nature Biotechnology
CRISPRai simultaneously activates and represses two genes in single cells.
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Maya Voichek @mayavoichek.bsky.social · 17/03/2025
1/ Transposable elements are often called "jumping genes" because they mobilize within genomes. 🧬 But did you know they can also jump 𝘣𝘦𝘵𝘸𝘦𝘦𝘯 cells? 🤯 Our new study reveals how retrotransposons invade the germline directly from somatic cells. www.biorxiv.org/content/10.1... A short thread 🧵👇
Drosophila follicle showing retrotransposons (pink & yellow) expressed in somatic cells infecting the oocyte
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Nature Biotechnology @natbiotech.nature.com · 18/03/2025
Information storage across a microbial community using universal RNA barcoding - @lauren-stadler.bsky.social @joffsilberg.bsky.social go.nature.com/440gL5E
go.nature.com
Information storage across a microbial community using universal RNA barcoding - Nature Biotechnology
Barcoding microbial ribosomal RNA creates a recording of gene transfer events without requiring translation.
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Michael Scherer @scherermich.bsky.social · 12/03/2025
New paper out in @bloodjournal.bsky.social. In this study lead by Daria Karpova and Hector Encabo, we investigated the effect of frequent blood donations (FD) on clonal hematopoiesis (CH). Briefly, FD selects for DNMT3A mutations rendering HSC sensitive to stimulation by EPO. doi.org/10.1182/bloo...
doi.org
Clonal Hematopoiesis Landscape in Frequent Blood Donors
Key Points. CH Analysis of a unique and uniform cohort of exclusively healthy individuals exposed to a novel type of selection pressureIdentification of no
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Elisabetta Mereu @elimereu.bsky.social · 12/03/2025
🚀 Join the #ISCO2025 community at @mdc-berlin.bsky.social on May 12-13! 🚀 Don't miss this incredible opportunity to connect with top #singlecell & #spatial omics experts and participate in a special Workshop led by @itaiyanai.bsky.social. ⏳Abstract submissions: March 21) www.isco-conference.eu
isco-conference.eu
ISCO - ISCO
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Broad Institute @broadinstitute.org · 12/03/2025
New spatial method, Perturb-FISH, combines imaging-based spatial transcriptomic measurements with CRISPR screening to reveal effects within and between cells. #Science
broad.io
New technology puts a spatial lens on CRISPR screening
Perturb-FISH reveals impacts of perturbations on gene expression and phenotype with single-cell, spatial resolution, allowing study of effects within and between cells.
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Reposted by Indra
Indra @indrasingh.bsky.social · 27/02/2025
Want to track clonality in organoids, cancer models, or in vivo transplants? Try our STRACK barcoding libraries from Addgene: www.addgene.org/233208/ www.addgene.org/233210/ www.addgene.org/233209/. If you need help establishing it, reach out—happy to collaborate and troubleshoot
addgene.org
Addgene: pLARRYv2-EGFP
Plasmid pLARRYv2-EGFP from Dr. Alejo Rodriguez-Fraticelli's lab is published in Cell Stem Cell. 2025 Apr. doi: 10.1016/j.stem.2025.01.012 This plasmid is available through Addgene.
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Indra @indrasingh.bsky.social · 27/02/2025
Beyond excited to say my first PhD paper is out today in @CellStemCell 📷. Here, we explored the role of epigenetic heterogeneity on malignant expansion, using a new approach called STRACK www.cell.com/cell-stem-ce...
cell.com
Pre-existing stem cell heterogeneity dictates clonal responses to the acquisition of leukemic driver mutations
Singh, Fernandez-Perez, et al. use hematopoietic stem cell barcoding to study clones with and without activation of cancer driver mutations, identifying that pre-existing stem cell states can dictate ...
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IRB Barcelona @irbbarcelona.org · 25/02/2025
🧪New technique reveals how the same mutations give rise to very different types of #leukaemia. 📰 Cell Stem Cell, supported by #CRISContraelCáncer. ✍️ Indranil Singh, Daniel Fernández-Pérez, Pedro Sánchez Sánchez, @alejofraticelli.bsky.social. ➡️ bit.ly/3QyrAnJ 📌 doi.org/10.1016/j.st...
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Teif lab @teiflab.bsky.social · 14/01/2025
Here is a growing list of conferences and schools in gene regulation for 2025 generegulation.org/conferences-.... You can order/filter this list by the date, deadline, location. Please reply here to suggest new events* *should be specific to gene regulation
generegulation.org
Conferences & Schools – 2025 – Gene Regulation – Teif Lab
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Nature Portfolio @natureportfolio.nature.com · 18/01/2025
Epidemiological studies have linked dirty air to dementia and other brain disorders. Nature reports on how researchers are trying to determine how pollutants do their damage, and how much harm they cause. 🧪
go.nature.com
Air pollution and brain damage: what the science says
Epidemiological studies have linked dirty air to dementia and other brain disorders. Now researchers are trying to determine how pollutants do their damage, and how much harm they cause.
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Jeff Mold @jeffmold.bsky.social · 16/01/2025
Very interesting work - @alejofraticelli.bsky.social @shalinhnaik.bsky.social www.nature.com/articles/s41...
nature.com
High-resolution, noninvasive single-cell lineage tracing in mice and humans based on DNA methylation epimutations - Nature Methods
This work presents a computational tool MethylTree to infer cell lineages based on epimutations on DNA methylation.
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Anders Sejr Hansen @andersshansen.bsky.social · 16/01/2025
Excited to share James Jusuf's preprint: By integrating Micro-C with SuperRes Live-Imaging we can calibrate genomics&imaging to perform absolute quantification of looping (e.g. this loop is present 3%) We quantify mESC 36k loops: <loops> are generally rare (2.3%) www.biorxiv.org/content/10.1...
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danapeer.bsky.social @danapeer.bsky.social · 31/12/2024
Sometimes, the exciting papers with more surprising findings have a harder time in the current scientific community. This is such an example. I think how cells remember past exposures and how this impacts their future fates is still poorly understood.
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Luis G. Palma @luigalpal.bsky.social · 31/12/2024
Chromatin-based memory as a self-stabilizing influence on cell identity | Genome Biology #Chromatin #CellFate #Review genomebiology.biomedcentral.com/articles/10....
genomebiology.biomedcentral.com
Chromatin-based memory as a self-stabilizing influence on cell identity - Genome Biology
Cell types are traditionally thought to be specified and stabilized by gene regulatory networks. Here, we explore how chromatin memory contributes to the specification and stabilization of cell states...
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Edouard Hannezo @ehannezo.bsky.social · 17/12/2024
Happy to share the latest work from Preeti Sahu, with Adriana Sanchez-Danes on the biomechanics of cell fate choices during tumor initiation! We implement/test a 3D vertex model with proliferation and fate choices for multilayered tissues! See 🧵 below (1/n) bit.ly/3ZXxJzk
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Itai Yanai @itaiyanai.bsky.social · 29/12/2024
The big 4 of grant writing: 1. Credibility: The topic fits your expertise 2. Narrative: It's clear what is the problem, the solution, and why you’re the right person for it 3. Juicy details: Flex your mastery of the topic 4. The concept: You connect every part to the big question
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Antoine Zalc @antoinezalc.bsky.social · 19/12/2024
Extremely cool system for in vitro culture! Synthetic organizer cells, engineered to spatially self-assemble around stem cells, can be used to create specific morphogen gradients and systematically guide in vitro development Congrats to everyone involved! www.cell.com/cell/abstrac...
cell.com
Synthetic organizer cells guide development via spatial and biochemical instructions
Synthetic organizer cells, engineered to spatially self-assemble around stem cells, can be used to create specific morphogen gradients and systematically guide in vitro development.
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Karun Kiani @karun-kiani.bsky.social · 11/12/2024
This is so cool
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John Prensner @johnprensner.bsky.social · 12/12/2024
This is a really amazing study!
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Laurence Ettwiller @ettwiller.bsky.social · 09/12/2024
www.biorxiv.org/content/10.1... Our study published today on #bioRxiv describe the identification of a deaminase that converts 5mC to T, enabling direct sequencing of the human methylome and genome. This achievement was made possible through a collaborative effort across all departments at #NEB.
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Adam MacLean @adamlmaclean.bsky.social · 28/11/2024
Just in time for thanksgiving our paper is out ☄️ using fluctuating methylation clocks as barcodes we show that the variation in the hematopoietic stem cell pool that (in most of us) leads to clonal hematopoiesis in later life is likely present *before birth* 👉🏼 www.nature.com/articles/s41...
nature.com
Developmental hematopoietic stem cell variation explains clonal hematopoiesis later in life - Nature Communications
Clonal hematopoiesis becomes increasingly common with age. Here the authors track stem cell dynamics in monozygotic twins and provide evidence that clonal hematopoiesis in later life reflects weak sel...
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Daniel Ibrahim @danielibrahim.bsky.social · 28/11/2024
🔺🔺🔺RED TRIANGLE ALERT 🔺🔺🔺 Ever wonder how #TADs compare across the tree of life?Look no further & read our Review!!! Find out what genes & 3D chromatin can & can't do in Bacteria! Archeae! Yeast! Plants! Animals! SMCs & RNA-Pol are the only thing they have in common www.nature.com/articles/s41...
nature.com
Evolution and function of chromatin domains across the tree of life - Nature Structural & Molecular Biology
Szalay et al. discuss cross-kingdom similarities and differences in 3D chromatin folding in relation to gene regulation, including in bacteria, archaea, mammals and plants. This comparison reveals cer...
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Sam Rodriques @sgrodriques.bsky.social · 20/11/2024
New on BioRxiv: We report a new, endogenous molecular clock in unmodified human cells and tissues. It is ticking away right now in almost every cell in your body. Paper here: www.biorxiv.org/content/10.1... 1/
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陳昱嘉 Yu-Chia Chen @evodevo-tw.bsky.social · 23/11/2024
Cell division is NOT a must for differentiation during early zebrafish embryogenesis. www.nature.com/articles/s41...
nature.com
Cell state transitions are decoupled from cell division during early embryo development - Nature Cell Biology
Kukreja et al. show that blocking cell division in zebrafish does not affect differentiation of major cell types during gastrulation and segmentation, but it does decelerate differentiation of particu...
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Evgeny Kvon @evgenykvon.bsky.social · 22/11/2024
In this review @gracebower.bsky.social & I discuss recent evidence showing that, unlike canonical enhancers, long-range enhancers located hundreds of kb from their targets rely on additional mechanisms to ensure robust gene activation during mammal development. www.sciencedirect.com/science/arti...
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Cedric Boeckx @cedricboeckx.bsky.social · 21/11/2024
A multi-omic atlas of human embryonic skeletal development, from Sarah Teichmann’s group; introducing the interesting SNP2Cell tool to link cell-type-specific regulatory networks to polygenic traits www.nature.com/articles/s41...
nature.com
A multi-omic atlas of human embryonic skeletal development - Nature
A multiomic atlas of human embryonic joint and cranium development enables detailed analysis of bone and cartilage maturation.
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Teif lab @teiflab.bsky.social · 16/11/2024
Interesting new method to map nucleosomes in 3D, "Proximity Copy Paste (PCP)". www.biorxiv.org/content/10.1... ▶️ mapped connectivity of nucleosomes in S. cerevisiae ▶️ chromatin is predominantly organized into regularly spaced nucleosome arrays ▶️ metaphase chromosomes packed by arrayed cohesin hubs
PCP maps 3D genome organization at the nucleosome level.
(a) Schematic of the PCP reaction on chromatin. Crosslinked chromatin is digested into nucleosomes by Caspase Activated DNAse (CAD) and then immobilized onto magnetic beads. Digested chromatin is ligated by seed and receptor molecules to the ratio of 1/10. The PCP reaction takes place on the beads where RNA tags will diffuse from the seeds and tag nearby receptors. The chromatin is then decrosslinked, the proteins and RNA removed, and a sequencing library generated by PCR. Molecules sharing the same UMI are grouped. Tag groups can be analyzed in several ways, including individual multiway tag groups or pairwise interaction matrices. (b) Plot showing the relative frequency of receptor tagging as a function of distance from the seed, the midpoints of the tagged molecules is shown. Seeds that self-tag are excluded from this analysis. (c) Plot showing the number of reads per seed tag groups for G1 data. (d) Distance decay interaction plots of PCP (orange) and Micro-C (Costantinto et al. 2020, 15 min 23°C sample) (res = 50bp).Regularly spaced nucleosome arrays are prevalent over the genome.
(a) Meta analysis of PCP matrices relative to the dyad of the +1 nucleosome of genes longer than 2Kb, 50 least expressed genes (res = 10bp). (b) As a, but for the 50 most expressed genes (res = 10bp). (c) PCP map of low expressed gene RNR3 (middle, res = 25bp), Nucleosome profile (grey). Note the grid-like pattern across the entire gene body. (d) PCP map of the expressed gene FMP27 (res = 25bp), Nucleosome profile (grey). Note the grid-like pattern at the 5’ end of the gene and parallel stripes at towards the middle and 3’ end of gene. (e) Schematic of the results observed. No pattern is obtained with poorly spaced, poorly positioned nucleosomes. Dotted pattern is obtained with regularly spaced, well positioned nucleosome arrays. Striped pattern is obtained with regularly spaced delocalized arrays. The number of parallel stripes indicates the number of nucleosomes in the array. (f) Meta plot of highly transcribed, ribosomal protein genes. The genes are organized with respect to the Rap1 protein at position 0. Top panel, Rap1 ChIP-MNase in blue (Gutin et al. 2018), All reads size, Mono-nucleosomal (Nuc.) reads only and Sub-nucleosomal reads only (Sub. 20 bp < insert size < 90 bp) are represented. Medium panel represent the density of read by position relative to insert size from mapped PCP data. The bottom panel is a pile-up analysis of PCP matrix oriented relative to the RP genes (res = 10bp). Note that the gene body contains short, delocalized nucleosome arrays. (g) Frequency of tagging relative to the seed position for the subset of genes used in a and b. The most expressed genes are in red and least expressed genes in blue. (h) Frequency of tagging relative to the seed position for gene of at least 600bp. The most expressed are in orange and the least expressed is in blue.
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Matthias Nau @matthiasnau.bsky.social · 30/10/2024
Want to make beautiful scientific figures? Easy! The NIH released a library of 2000+ free scientific illustrations called *BioArt*. Check it out! bioart.niaid.nih.gov #AcademicSky #PsychSciSky 🧠🟦 🧪
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Anshul Kundaje @anshulkundaje.bsky.social · 14/11/2024
CpGPT: a Foundation Model for DNA Methylation www.biorxiv.org/content/10.1... MethylGPT: a foundation model for the DNA methylome www.biorxiv.org/content/10.1... Exciting self supervised models trained on massive cross-platform methylation data by @bowang87.bsky.social lab. 1/
biorxiv.org
CpGPT: a Foundation Model for DNA Methylation
DNA methylation is a critical epigenetic modification that regulates gene expression and plays a significant role in development and disease processes. Here, we present the Cytosine-phosphate-Guanine ...
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Itai Yanai @itaiyanai.bsky.social · 14/11/2024
Professors: we must start teaching creativity in science! Interested in teaching the creative scientific process at your university? Here's our materials to help: Workshops: www.night-science.org/teaching_mat... Editorials: www.biomedcentral.com/collections/... Podcast: nightscience.buzzsprout.com
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Takashi Akera Lab @takashiakeralab.bsky.social · 14/11/2024
Official website for EMBO meiosis 2025 is live now! Looking forward to seeing you in Switzerland next June! #meiosis4eva meetings.embo.org/event/25-mei...
meetings.embo.org
Meiosis: Exploring diversity to discover the fundamentals
Meiosis is an essential cell division for sexual reproduction and fertility across eukaryotes. It involves a series of tightly regulated processes, including entry into meiosis, pairing of homologs, …
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James Briscoe @jamesbriscoe.bsky.social · 12/11/2024
A stimulating workshop on the subject of Waddington Landscapes in Lyon last week, prompted me to compose some thoughts on dynamical landscapes, gene regulatory networks, and single cell transcriptomics briscoelab.org/morphogenalia/
briscoelab.org
Briscoe Lab
Developmental Dynamics of Tissue Formation
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Howard Salis @hsalis.bsky.social · 13/11/2024
NEW paper 🚨 Have you ever wondered how the RNA degradosome picks its targets for mRNA decay? Can we predict how quickly a mRNA will decay inside cells? Drs. Cetnar, Hossain, & Vezeau characterized 50000+ synthetic mRNAs to provide quantitative answers! 🧵 begins www.nature.com/articles/s41...
nature.com
Predicting synthetic mRNA stability using massively parallel kinetic measurements, biophysical modeling, and machine learning - Nature Communications
The authors carried out massively parallel mRNA decay measurements on over 50,000 mRNAs, revealing the interactions controlling mRNA stability in bacteria. Biophysical modeling and machine learning we...
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Daniel Lipka @dblipka.bsky.social · 13/11/2024
Preprint describing the systematic identification of TF binding motifs and of TFs which preferentially bind methylated DNA. #epigenomics
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Maxim Greenberg @maxvcg.bsky.social · 12/11/2024
I've been meaning to write a lengthy thread about our experiences with DNA methylation editing in mouse ESCs if that would be useful (or interesting?) for a niche audience here. tl;dr: it was frustrating but we learned a lot, and it ended with our shiny new pub (1/17) www.nature.com/articles/s41...
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