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Raluca Groza

@ralucag.bsky.social
382 followers 815 following 27 posts

Postdoc in the Kleele lab, ETH Zürich | HFSP and EMBO fellow | Previously PhD in the Ewers lab, FU Berlin | mitochondria, neurons, super-resolution microscopy

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Reposted by Raluca Groza
Veijo Salo @veijosalo.bsky.social · 23/06/2026
How does a cell remodel the ER membrane into a lipid droplet? Excited to share our new bioRxiv preprint, where we find that regulated opening of the seipin ring defines a functional ER–lipid droplet interface — and identify SMLR1 as a regulator of this transition. www.biorxiv.org/content/10.6...
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DGZ.bsky.social @dgz.bsky.social · 11/05/2026
On June 30 at noon, the next #DGZ Focus Workshop on #MembraneOrganization & #ContactSites will take place, organized by Sabrine Buettner & Katja Zieske. Speakers: André Nadler @nadlerlab.bsky.social, Suzan Kors, Zexi Xu and Emma Fenech. Join us!
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Ewerslab @ewerslab.bsky.social · 05/05/2026
New paper out! Left-handed DNA cannot bind to natural, right-handed DNA. This leads to lower background if it is used as a probe in DNA-PAINT. Using Fluorigenic DNA-PAINT with left-handed DNA allows for low background, fast 3D DNA-PAINT! Congrats, Bas! skeetorial: 1/x pubs.acs.org/doi/full/10....
pubs.acs.org
Accelerated Left-Handed DNA-PAINT Using Fluorogenic Probes
Single-molecule localization microscopy (SMLM) techniques offer nanometer-scale resolution by stochastically localizing individual fluorescent molecules. Among these, DNA-mediated point accumulation f...
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David Solecki @so-lets-kilab70.bsky.social · 05/05/2026
Hey y’all 👋 repost magic appreciated. The Solecki lab is recruiting multiple postdocs at St. Jude for a chromatin imaging project at the edge of live-cell imaging, neuronal cell biology, chromatin regulation, and quantitative image analysis. Ever dreamed of touring chromatin like this? We CAN 🔥
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Biointegrated Photonics Lab @schubertlab.bsky.social · 30/04/2026
Optical sensing of biological #forces with #microlasers, now published in @opg.optica.org. Data from Melisa's master thesis, with additional cell data measured by David. So great to have a solid+soft material as alternative to oil droplet microlasers. doi.org/10.1364/OME.... (open access)
A monochrome sketch of a dense layer of biological cells. One cell is shown with more details, including different organelles. The cell also contains a spherical bead that emits a green glow. Red lines and arrows around the bead indicate the biological force that deforms the bead and changes the spectrum of the emitted light from which the absolute force is calculated.
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Reposted by Raluca Groza
Mart Krupovic @mkrupovic.bsky.social · 22/04/2026
"The selfish ribosome" paper is now published in @plosbiology.org . Have a look! Many thanks to the editors and reviewers! doi.org/10.1371/jour...
journals.plos.org
The selfish ribosome
In this Essay, the evolution of life is construed as a ribosomal takeover, whereby the ribosome evolved to consume most of the cell’s resources, while other cellular componentry ensured the propagatio...
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Fran Bottanelli @franbottanelli.bsky.social · 21/04/2026
Exciting to see this out in its final form! Wonderful work led by @probablycarmen.bsky.social. Want to know why protrusions are better at initiating immune signaling in #Tcells? Look no further. Link to Carmen’s 🧵 on the preprint bsky.app/profile/prob...
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Ewerslab @ewerslab.bsky.social · 21/04/2026
impressive!
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Michel Nivard @michelnivard.bsky.social · 18/04/2026
Thinking about this more, the 2 and 3 year bans are real career killers… who’d hire a tenure track candidate, or an (associate) professor that has one of those hanging around their necks?
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bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 18/04/2026
Phosphoregulated SMCR8-FIP200 interaction connects the ALS/FTD-linked C9orf72 complex to autophagy initiation and mitochondrial quality control www.biorxiv.org/content/10.64898/20…
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Reposted by Raluca Groza
Alex Whitworth lab @labwhitworth.bsky.social · 05/01/2026
Drosophila models have been highly useful in dissecting the physiological roles of PINK1 and Parkin in #mitophagy Led by 3 talented PhD students, we wrote a review summarising recent exciting discoveries and discussed these in context of current in vitro studies portlandpress.com/biochemj/art...
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Leonardo Almeida-Souza @leonardoasouza.bsky.social · 17/04/2026
1/13 🧵 ‼️Preprint alert. Are you interested in synthetic protein binders? Do you need to generate them? I present to you IARA: a fast, slim ML model that tells you which protein surfaces are good for binder design. www.biorxiv.org/content/10.6...
biorxiv.org
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Nature @nature.com · 13/04/2026
PhD students reflect on how their supervisors made a meaningful difference — from quiet acts of kindness to career-shaping guidance go.nature.com/422vHhs
go.nature.com
14 things our PhD supervisors got right and why it mattered
PhD students reflect on how their supervisors made a meaningful difference — from quiet acts of kindness to career-shaping guidance.
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Michael Lin, MD PhD @michaelzlin.bsky.social · 12/04/2026
We're gearing up to generate iPSCs stably expressing ASAPs, and are compiling a list of potential users who might want these to study cell fate pathways for neurons or cardiomyocytes, or to perform drug screening. If these would be useful to you, please message me in the chat
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Stella Hurtley @smhsci.bsky.social · 07/04/2026
Out now in @science.org Pearling drives mitochondrial DNA nucleoid distribution | Science www.science.org/doi/10.1126/...
science.org
Pearling drives mitochondrial DNA nucleoid distribution
The distribution of mitochondrial DNA–containing nucleoids is essential for mitochondrial function and genome inheritance; however, no known mechanisms can explain nucleoid segregation or their regula...
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Kai Johnsson @kjohnsson.bsky.social · 26/03/2026
A high-affinity split-HaloTag for live-cell protein labeling. And much more. www.nature.com/articles/s41...
nature.com
A high-affinity split-HaloTag for live-cell protein labeling
Nature Communications - Lin and colleagues present high-affinity split-HaloTag pairs for protein tagging and multiplexed labelling. This versatile system allows protein visualisation with diverse...
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Raffaella De Pace @depaceraffa.bsky.social · 26/03/2026
Take a look at our Research Highlight: Adriana Golding et al. www.nature.com/articles/s41... We highlight the work by Ghoochani et al., who generated an atlas of brain lysosomal proteins and identified SLC45A1-associated disease as a lysosomal disorder: www.cell.com/cell/fulltex...
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Department of Biology, ETH Zurich @eth-dbiol.bsky.social · 04/02/2026
Cells drastically downregulate mRNA translation to save energy during stress. A study by the Weis lab (IBC) shows that mRNAs transcribed after stress escape repression while pre-existing mRNA don’t, in a timing mechanism that is independent of mRNA sequence. More: biol.ethz.ch/en/news-and-...
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Raluca Groza @ralucag.bsky.social · 01/02/2026
Interesting study about the gender gap in publishing. Not sure if 7% longer review time for female scientists is really something, but I do know that indeed we must prove competence more than our male counterparts journals.plos.org/plosbiology/...
journals.plos.org
Biomedical and life science articles by female researchers spend longer under review
Women are underrepresented in academia, especially in STEMM fields, at top institutions, and in senior positions. This study analyzes millions of biomedical and life science articles, revealing that f...
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Science Magazine @science.org · 31/01/2026
In a new #SciencePolicyForum, researchers discuss the risks of malicious “#AI swarms,” which enable a new class of large-scale, coordinated disinformation campaigns that pose significant risks to democracy. scim.ag/49FIhrM
"AI swarms are … equipped to exploit this by engineering a synthetic consensus …" Schroeder et al.
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Nature Reviews Genetics @natrevgenet.nature.com · 31/01/2026
FYI: New online! Whole-genome spatial transcriptomic imaging with RAEFISH
dlvr.it
Whole-genome spatial transcriptomic imaging with RAEFISH
Nature Reviews Genetics, Published online: 09 January 2026; doi:10.1038/s41576-025-00926-yIn this Tools of the Trade article, Yubao Cheng discusses the development of RAEFISH (reverse-padlock amplicon-encoding fluorescence in situ hybridization), a method that enables spatial transcriptomics with both single-molecule spatial resolution and genome-wide coverage.
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asamelson @asamelson.bsky.social · 28/01/2026
After a long review process, I'm excited that our paper is finally in print: www.cell.com/cell/fulltex... TL;DR: We use CRISPR screens in iPSC-derived neurons to find a new tau E3 ligase and a relationship between oxidative stress, the proteasome, and tau proteolytic fragments. More below 👇
cell.com
CRISPR screens in iPSC-derived neurons reveal principles of tau proteostasis
CRISPR screens in iPSC-derived neurons reveal that the E3 ubiquitin ligase CRL5SOCS4 ubiquitinates tau, that CUL5 expression is correlated with resilience in human Alzheimer’s disease, and that electr...
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PLOS Biology @plosbiology.org · 26/01/2026
Mitophagy is critical for cellular health & associated with multiple diseases. @baehreckelab.bsky.social &co show that the OMM protein Mtch regulates #mitophagy during #Drosophila intestinal development, by modulating the insertion of mitophagy receptor BNIP3 @plosbiology.org 🧪 plos.io/45uyBhg
Left panel: Immunofluorescent microscopy showing that Mtch mutant intestine cells (blue nuclei that lack red dye) fail to clear mitochondria marker protein ATP5A (green). Right panel: Transmission electron microscopy image of a mitochondrion engulfed by an autophagosome of a Drosophila intestine enterocyte.
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Nature Portfolio @natureportfolio.nature.com · 09/01/2026
A study published in Nature Communications reveals that exposure to certain food preservatives, including potassium sorbate and sodium nitrite, correlates with a higher risk of developing type 2 diabetes. 🧪
go.nature.com
Associations between preservative food additives and type 2 diabetes incidence in the NutriNet-Santé prospective cohort - Nature Communications
Exposure to twelve widely used preservative food additives are associated with a higher incidence of type 2 diabetes in the French NutriNet-Santé cohort of 108,723 adults, supporting recommendations to favour fresh and minimally processed foods
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Peter O'Toole @yorkbioimaging.bsky.social · 09/01/2026
Emotional - Uri Manor @manorlaboratory.bsky.social was so wonderfully open & an inspiration to listen on #TheMicroscopists Uri talks about growing up with hearing loss & a winding path through baseball-music-restaurant work led him to physics & then biology - pls share Stream bit.ly/microscopist...
bit.ly
The Microscopists | Uri Manor (UC San Diego School of Biological Sciences)
In this episode of The Microscopists, Uri Manor, Assistant Professor of UCSD, opens up about growing up with profound hearing loss and how, despite wanting nothing to do with becoming a scientist, ...
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Sam Lewis, Ph.D. @samlewis.bsky.social · 18/12/2025
⚡️Mitochondria make ATP, the energy that powers life. But in neurons, with axons up to a meter long, how do these tiny power plants stay functional in the right places? We went looking. 1/n www.biorxiv.org/content/10.6...
biorxiv.org
Self-renewal of neuronal mitochondria through asymmetric division
Mitochondrial ATP production is essential for life. Mitochondrial function depends on the spatio-temporal coordination of nuclear and mitochondrial genome expression, yet how this coordination occurs ...
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Evelina Tutucci @anilevetu.bsky.social · 09/11/2025
#spatialgeneexpression #RNAlocalizatiom #RNAsky www.nature.com/articles/s41...
nature.com
Secretome translation shaped by lysosomes and lunapark-marked ER junctions - Nature
Live-cell imaging of mRNA encoding secretome proteins and translated nascent peptide markers show that secretome translation occurs at endoplasmic reticulum junctions near lysosomes, requires lun...
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UCL Faculty of Brain Sciences @uclbrainscience.bsky.social · 09/11/2025
A team involving @uclqsion.bsky.social scientists has, for the first time, directly visualised and quantified the protein clusters believed to trigger Parkinson’s disease.
the-independent.com
Parkinson’s breakthrough could unlock treatments for devastating disease
Scientists have developed a groundbreaking new technique to visualise the brain clusters that may trigger Parkinson’s
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Reposted by Raluca Groza
Albert Dominguez Mantes @albertdm.bsky.social · 06/06/2025
Spotiflow, our deep learning based spot detection method for microscopy, is now published in @natmethods.nature.com! Since the pre-print, we have added many features, notably native 3D detection! @maweigert.bsky.social @gioelelamanno.bsky.social @epfl-brainmind.bsky.social Paper: rdcu.be/epIB7 (1/N)
rdcu.be
Spotiflow: accurate and efficient spot detection for fluorescence microscopy with deep stereographic flow regression
Nature Methods - Spotiflow uses deep learning for subpixel-accurate spot detection in diverse 2D and 3D images. The improved accuracy offered by Spotiflow enables improved biological insights in...
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Dr. Jean Fan @jef.works · 13/10/2025
What is RNA velocity in situ? ChatGPT kept getting it wrong... So I made this video explaining how RNA velocity in situ infers gene expression dynamics by distinguishing nuclear vs. cytoplasmic expression in spatial transcriptomics data: youtu.be/z9Oxf1hvum0 #AcademicSky
youtu.be
RNA velocity in situ infers gene expression dynamics using spatial transcriptomics data
YouTube video by Prof. Jean Fan
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André Nadler @nadlerlab.bsky.social · 09/10/2025
Lipid imaging on the cover of @nature.com! Great times for lipid cell biology indeed. And a fantastic recognition of all the hard work by the team, especially Juan M. Iglesias-Artola and Kristin Böhlig (who made the cover). Link to article: www.nature.com/articles/s41...
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Juan C. Landoni @jclandoni.bsky.social · 12/11/2024
#StarterPack for the #Mitochondria research community! Very much a work in progress, comment below/reach out to be added! #Mito #Mitochondriac go.bsky.app/J6Bu5fL
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Abhishek Chatterjee @achemsynbio.bsky.social · 02/10/2025
Excited to share our work with Eranthie Weerapana and Tim van Opijnen, co-led by Conor Loynd, Soumya Roy, and Sarah Canarelli! We introduce a new generation of BONCAT tools for the versatile characterization of newly synthesized proteins in pathogenic bacteria. rdcu.be/eI4M5
rdcu.be
Cell-selective multiplexed bioorthogonal noncanonical amino acid tagging for nascent proteomics
Nature Chemical Biology - Engineered aminoacyl-tRNA synthetase (aaRS) mutants have been developed that facilitate ultrafast bioorthogonal noncanonical amino acid tagging (BONCAT) of newly...
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Merja Joensuu @joensuulab.bsky.social · 01/10/2025
🌟 Thrilled to share that my lab’s first publication is now out in @natmetabolism.nature.com. Congrats to the team 🎉 🧠 We discovered that neurons use endogenous fatty acids as an energy fuel, challenging long-standing models of sugars being the exclusive energy source for neurons. 1/3
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Raluca Groza @ralucag.bsky.social · 30/09/2025
check out Nadja’s beautiful work on cytokinesis, many congratulations 👏👏
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Nadja M. Hümpfer @nadjahuempf.bsky.social · 28/09/2025
Now out on bioRxiv. 🥳My research on #cytokinesis, averaging thousands of #ExM images🔬, creating a dynamic atlas of cytokinesis 🦠⏳. Here's an animated sneak peek of what we found. Better resolution on bioRxiv😄 #PSFoftheGIF
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Journal of Cell Biology @jcb.org · 15/09/2025
SEPTIN9 locally activates the RhoGEF ARHGEF18 to promote early stages of mitochondrial fission, say Rachel Shannon, William Trimble and colleagues @sickkidsto.bsky.social @utoronto.ca: rupress.org/jcb/article/... #Cytoskeleton #Biochemistry #Mitochondria #septins
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Tatjana Kleele @tatjanakleele.bsky.social · 01/09/2025
Join us at the LS2 Annual Meeting 2026 in Zürich!
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Raluca Groza @ralucag.bsky.social · 21/08/2025
many congratulations for such beautiful work André and co👏👏
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Richard Wubbolts @rwub.bsky.social · 02/08/2025
www.biorxiv.org/content/10.1... Excellent Jasper van den Ende in Esther's lab @esthernoltethoen.bsky.social. Using Marvin's @marvintanenbaum.bsky.social SUNtag system to monitor EV cargo access to cytoplasm allows real time quantification of the process. #EV #extracellular vesicles
biorxiv.org
Development of a live-cell imaging assay to elucidate spatiotemporal dynamics of extracellular vesicle fusion with target cells
Cells communicate via extracellular vesicles (EVs) containing functional RNAs, proteins and lipids. Knowledge on the fate of internalized EVs, especially their capacity to fuse with target cell membra...
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Nature Cell Biology @natcellbio.nature.com · 02/08/2025
🍹@mariamls.bsky.social et al. identify ER–mitochondria contact sites as the intracellular location where phospholipid peroxidation first occurs to promote ferroptosis. Manipulating these contact sites dictates #ferroptosis sensitivity in #BreastCancer. @agostinislab.bsky.social bit.ly/4l93AUW
bit.ly
Endoplasmic reticulum–mitochondria contacts are prime hotspots of phospholipid peroxidation driving ferroptosis - Nature Cell Biology
Sassano et al. identify endoplasmic reticulum–mitochondria contact sites as the intracellular location where phospholipid peroxidation first occurs to promote ferroptosis. Manipulating these contact s...
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Elisa Franco @francolab.bsky.social · 26/06/2025
We demonstrated how to make and dissolve #RNA #condensates through strand displacement using synthetic genes - excited to see this new paper out in @narjournal.bsky.social Collab w/ the Andersen group @esandersen.bsky.social academic.oup.com/nar/article/...
academic.oup.com
Switchable RNA motifs for dynamic transcriptional control of RNA condensates
Abstract. RNA-driven phase separation is emerging as a promising approach for engineering biomolecular condensates with diverse functionalities. Condensate
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Ewerslab @ewerslab.bsky.social · 23/06/2025
Die Kürzungen sind ein absoluter Skandal, die Wissenschaft ist eine der grossen Stärken Berlins. Wir sidn eine der Besten Unis Deutschlands mit vergleichsweise wenig Mitteln, diese noch zu kürzen ist Wahnsinn. Wie sollen wir kompetitiv bleiben? Eine Abwärtsspirale droht.
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Ewerslab @ewerslab.bsky.social · 18/06/2025
Come all next week to the online seminar on "Imaging for Cell Biology" of the @dgz.bsky.social Tuesday June 24th at 12:00 on zoom, info see below.
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Fran Bottanelli @franbottanelli.bsky.social · 28/05/2025
Thank you @jcellsci.bsky.social, Sara Morais da Silva and Co for highlighting me as “cell scientists to watch”! It means a lot to me and I feel so honored as you guys are such a great community of amazing cell biologists! journals.biologists.com/jcs/article/...
journals.biologists.com
Cell scientist to watch – Francesca Bottanelli
ABSTRACT. Francesca Bottanelli is an Assistant Professor in the Department of Biochemistry at Freie Universität Berlin (Germany). Francesca graduated in Plant Biotechnology from the University of Mila...
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Hansi Weissensteiner @whansi.bsky.social · 22/05/2025
Mitochondria Are More Than Powerhouses—They’re the Motherboard of the Cell great work by Martin Picard www.scientificamerican.com/article/why-...
scientificamerican.com
The Hidden Social Lives of Mitochondria
When these energy-giving organelles thrive, so do we
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Ewerslab @ewerslab.bsky.social · 09/05/2025
The 2025 version of Biomembrane Days is online for registration! Sign up now, it is going to be spectacular as always! Looking forward to an outstanding lineup of speakers both invited and selected. We look forward to having experts in the Cell Biology and Biophysics of membranes!
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Tatjana Kleele @tatjanakleele.bsky.social · 14/04/2025
Join us in Engelberg for an exciting #EMBO workshop on #mitochondria in the nervous system #EMBOmitoNervousSys. Great speaker line up and opportunities for short talks from early career scientists! Submit your abstract until May 30st! meetings.embo.org/event/25-mit...
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Nature Cell Biology @natcellbio.nature.com · 27/04/2025
☕Chou et al. generate transdifferentiated human neurons from fibroblasts from young or aged individuals and patients with #Alzheimers. Studies of endolysosomes and proteostasis suggest a role for lysosomal quality control in Alzheimer’s disease pathology. bit.ly/4lSORPV
bit.ly
Proteostasis and lysosomal repair deficits in transdifferentiated neurons of Alzheimer’s disease - Nature Cell Biology
Chou et al. generate transdifferentiated human neurons from fibroblasts from young or aged individuals and patients with Alzheimer’s disease. Studies of endolysosomes and proteostasis suggest a role f...
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dbogani.bsky.social @dbogani.bsky.social · 25/04/2025
Check out also our post to see how the @mrcharwell.bsky.social contributed to the work and what we think it will me for #preclinical in vivo studies and better #TranslationalResearch outcomes www.har.mrc.ac.uk/news/new-fra...
har.mrc.ac.uk
New Framework Aims to Eliminate Sex Bias in Preclinical Research
An important new resource for researchers, reviewers, and funders has been developed with major contributions from the Mary Lyon Centre. A group of researchers and policy leaders from organisations in...
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