Bray Lab

Sarah Bray's lab @PDN_Cambridge @Cambridge_Uni investigating Notch signalling in Drosophila!

[The Company of Biologists @Co_Biologists]

We are pleased to welcome Dan Shanahan as our new Chief Executive Officer. Dan has a strong background in Open Access publishing and non-profit organisations and is passionate about driving innovation in the industry. Read more about Dan at https://t.co/KHVfZKRM5z

[Development @Dev_journal]

Fundamental limits on symmetry breaking by Turing-like activator-inhibitor mechanisms

Read this Research Article from our special issue #DevSIextracellular by Daniel Muzatko, Bijoy Daga and Tom Hiscock @hiscock_lab from @aberdeenuni.

https://t.co/dY8O2G57uH

[Bray Lab @BrayLabCam]

A bit belatedly sharing this beautiful work of carmina’s. A real tour de force of live imaging!

Direct observation of Notch signaling–induced transcription hubs mediating gene-expression responses | Science Advances https://t.co/tnXgIJBlLz

[The Company of Biologists @Co_Biologists]

Our grants support researchers in a variety of ways. Visit our stories page to hear how biologists have utilised the funding to support their science: https://t.co/9VYiG7CDNn

[The Company of Biologists @Co_Biologists]

Happy #WorldEnvironmentDay. We are joining in the #NowForClimate campaign and share our resources for mitigating climate change. Check our free carbon footprint calculator and sustainable grants at https://t.co/vXMU85NgJM

[Development @Dev_journal]

Sean Wu @SeanM_Wu will be speaking on "Stem cells and AI approaches to understanding heart development" at our Journal Meeting in the UK this September #HumanDev26
Register to attend: https://t.co/30OKRkPDT8
Early-bird deadline: 8 May 2026

[The Company of Biologists @Co_Biologists]

One month until early-bird registration deadline for @Dev_journal & @wellcometrust-funded consortium HDBI's 2026 Meeting on Human Development: Stem Cells, Models, Embryos. Check out the programme https://t.co/PMvTPOKxdx and register by 8 May https://t.co/HLu41RYWcu

[Cambridge University @Cambridge_Uni]

11 Cambridge researchers have been awarded Advanced Grants from the @ERC_Research – the highest number of grants awarded to any institution in this latest funding round.

Explore their research 👉
https://t.co/TxpeOwcfKJ

[PDN Cambridge @PDN_Cambridge]

We are delighted to welcome Dr Caren Norden to PDN as the new Charles Darwin Professor of Animal Embryology. This position plays a vital role in sustaining our thriving community of developmental and reproductive biologists.
Read the story in full at https://t.co/4KJ57tNZix

[Bray Lab @BrayLabCam]

Sad to see this, Benny will be greatly missed.

[Meital Oren-Suissa @MeitalOren]

Benny Shilo was a great scientist and a mentor I looked up to. He will be dearly missed

[The Company of Biologists @Co_Biologists]

Early-career researchers can apply for a funded place at our Workshop 'New Technologies for Studying and Reprogramming Development' organised by Alex Dunn @ZevGartner @Adrian_Jacobo and Matthew Kutys.
https://t.co/GED292LZfr
Apply by 23 May
#BiologistsWorkshops

[K. VijayRaghavan @kvijayraghavan]

Congratulations to Artavanis-Tsakonas, Struhl, and Greenwald on the Canada Gairdner Award for their work on Notch signalling. The Notch locus has been shown to have important roles in cancer, stem-cell development, brain disease, and many other areas important for human health. The three have played a key seeding role and allowed a field to grow.

At the kernel of the mechanisms that determine the progressive allocation of cell-fate in animal development lie only a few key signalling pathways. These pathways involve the communication between cells—through contact, short-range signals and long-range signals—to alter the fate of the cell that receives the signal. These key players are Wnt, Hedgehog, Receptor Tyrosine Kinase, TGF-b, NF-kappa-b and, pertinent to our discussion, Notch. I don’t think I am very much off the mark if I were to say that the leading contributors to the discovery and understanding of all these signalling pathways, but for Notch, have been honoured by one or more major awards. By conferring the Canada Gairdner International Award on Spyros Aratavanis-Tsakonas, Gary Struhl and Iva Greenwald this gap has been properly bridged.
Cells acquire their fate by two ways, Sydney Brenner famously said: By who their parents are (which he called the English model) or by who their neighbours are ( the American model). A cell can also stand out amongst equivalent cells in it its neighbourhood by suppressing others, and the principal mechanism it uses for this is by Notch-mediated lateral inhibition. Lateral inhibition was first ‘detected’ by Vincent Wigglesworth, using elegant transplantation experiments to study bristle spacing in the insect Rhodnius prolixus in 1940. The position of bristle- forming cells in a field of ‘bald’ cells is determined by lateral inhibition. The mechanistic underpinnings of this process was, of course not explorable at the time, but strangely, were laid a few years earlier. Derek Poulson, in 1936 pioneered what was later to be called developmental genetics, when he showed that deletions and null mutations at the Notch locus causes the expansion of neuronal tissue at the expense of epidermis.
In the 1970s the revolution in molecular biology allowed the use of genetics to explore underlying molecular mechanisms of genes involved in development. Molecular cloning of genes, relatively straightforward now, was, as we all know a long-haul at that time even for ‘simple’ genes. For genetically complex loci, such as the bithorax- complex, the decapentaplegic ( TGF-b) gene and the Notch locus, only the most daring and intelligent would venture where others feared to tread.
(About Struhl and Greenwald later, their contributions are no less impressive.) But here’s more about Artavanis-Tsakonas. His taking on this challenge is a tribute to his daring and his preparedness in going for the long-haul. Success was by no means guaranteed and there was little reason to second- guess evolution and presume that the molecular analysis would readily reveal cellular or organismal function.
In the event, the long-haul was a very long one that still continues but the the fruits of this labour were found all along the way. The Notch pathway and its roles in cell communication, acquisition of cell fates, modulation of stem cells, and control of oncogenesis have truly illuminated all of biology. Thus, we must see Artavanis-Tsakonas’s contribution not just by the papers from his lab but by publications on Notch from other labs too. The pathway has become so famous that very few now cite the original pathbreaking papers any more. A true sign of a pioneer.
Upon sequencing the Notch gene, the Artavanis-Tsakonas lab identified key EGF-like coding sequences that were its hallmark. This was also shown to be a feature of Notch ligands too, Delta and Serrate ( identified as a ligand by Artavanis-Tsakonas’s lab). Very soon, using cell- culture experiment Artavanis-Tsakonas’s lab show how ligand and receptor interact. They then worked out the intracellular components of the pathway. These are the Enhancer of split locus, which encodes seven independent helix-loop-helix proteins; the suppressor of Hairless and deltex. The Enhancer of split and suppressor of Hairless are two of the three major nuclear targets of Notch signal transduction and deltex is an intracellular protein that binds to and regulates Notch. Artavanis-Tsakonas and colleagues also cloned the mammalian homologues of the Enhancer of split genes and deltex demonstrating that the pathway was evolutionarily conserved.

As Darwin famously said "from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.” The work on Notch that started with flies and worms has taught us about cancers and dementia because all life on earth has a shared chemistry. By studying so-called simple and accessible organisms, we learn about nature, and we learn about our health too. Fundamental research is intertwined like a jalebi with application and the Notch pathway illustrates this beautifully.

[Development @Dev_journal]

Construction of an atlas of transcription factor binding during mouse development identifies popular regulatory regions

Read this Techniques & Resources Article by @AnnaNordin96, @GianlucaZamba, @MattEJonasson, @ppagella86 Claudio Cantù & co.: https://t.co/p2D9ICttF5

[The Forest of Biologists @For_Biologists]

This #InternationalDayOfForests, we’re proud to support our partner The Woodland Trust and its vision of a world where woods and trees thrive for people and nature: Planting trees for a net-zero future, Protecting vital habitats, Restoring ancient woodland
https://t.co/CE5Emujwgp

[Development @Dev_journal]

From the Editors-in-Chief of all @Co_Biologists journals:

"In these uncertain times, we must strengthen our international scientific networks. We must speak with a unified voice in support of evidence-based policymaking and scientific freedom."
https://t.co/ARSP32NWPE

[the Node @the_Node]

Together with @focalplane_jcs, we're having an image competition to accompany the #Biologists100 conference.

Thank you everyone who submitted their images. Shortlisting only 15 was tough!

Browse through the gallery and vote for your favourite image:
https://t.co/UEu6MAy3pb

[PDN Cambridge @PDN_Cambridge]

A study, published in @ScienceMagazine highlights the value of pet dogs as a model for understanding obesity in both humans and animals. The study, led by PDN Academic @EllieRaffan, illustrates how genetic obesity risk leads to weight gain.
https://t.co/JP03rQDGxK

[Wellcome @wellcometrust]

Are you a researcher planning to apply for Wellcome funding in the next two years?

We’re offering researchers the opportunity to observe a Wellcome funding advisory committee and learn how grant applications are assessed.

Learn more ⤵️
https://t.co/thvs7V2mCE

[Development @Dev_journal]

We are looking for a new Executive Editor on the journal, with @katemmabrown1 taking on a new role at
@Co_Biologists. If you're an experienced editor with a love of developmental biology and its community, this could be the job for you: https://t.co/3ZDu9Aye5K

[Hansong Ma @Hansong_Ma]

Deeply saddened by the passing of R. Scott Hawley, whose pioneering work on meiosis and chromosome dynamics and dedication to mentoring will leave a lasting impact on the genetics community.