Cambridge researchers named as 2025 Academy of Medical Sciences Fellows
The new Fellows have been recognised for their remarkable contributions to advancing medical science, groundbreaking research discoveries and translating developments into benefits for patients and the wider public. Their work exemplifies the Academy’s mission to create an open and progressive research sector that improves health for everyone.
They join an esteemed Fellowship of 1,450 researchers who are at the heart of the Academy’s work, which includes nurturing the next generation of scientists and shaping research and health policy in the UK and worldwide.
One of Cambridge’s new Fellows, Professor Sam Behjati, is a former recipient of the Academy’s prestigious Foulkes Foundation medal, which recognises rising stars within biomedical research. Sam is Clinical Professor of Paediatric Oncology at the University and an Honorary Consultant Paediatric Oncologist at Addenbrooke’s Hospital, as well as Group Leader at the Wellcome Sanger Institute. His research is rooted in cancer genomics, phylogenetics, and single cell transcriptomics and spans a wide range of diseases and biological problems. More recently, his work has focused on the origin of cancers, in particular of childhood cancer. In addition, he explores how to use genomic data to improve the treatment of children. Sam is a Fellow at Corpus Christi College, Cambridge.
Also elected to the Academy of Medical Sciences Fellowship are:
Professor Clare Bryant, Departments of Medicine and Veterinary Medicine
Clare Bryant is Professor of Innate Immunity. She studies innate immune cell signalling during bacterial infection to answer fundamental questions about host-pathogen interactions and to search for new drugs to modify them. She also applies these approaches to study inflammatory signalling in chronic diseases of humans and animals. Clare has extensive collaborations with many pharmaceutical companies, is on the scientific advisory board of several biotech companies, and helped found the natural product company Polypharmakos. Clare is a Fellow of Queens’ College, Cambridge.
Professor Frank Reimann, Institute of Metabolic Science-Metabolic Research Laboratories
Frank Reimann is Professor of Endocrine Signaling. The main focus of his group, run in close partnership with Fiona Gribble, is the enteroendocrine system within the gut, which helps regulate digestion, metabolism, and how full we feel. Their work has included the use of animal models and human cellular models to understand how cells function. One of these cells, glucagon-like peptide-1 (GLP-1) is the target of therapies now widely used in the treatment of diabetes mellitus and obesity. How cells shape feeding behaviour has become a major focus of the lab in recent years.
Professor Mina Ryten, UK Dementia Research Institute
Mina Ryten is a clinical geneticist and neuroscientist, and Director of the UK Dementia Research Institute at Cambridge since January 2024. She also holds the Van Geest Professorship and leads a lab focused on understanding molecular mechanisms driving neurodegeneration. Mina’s research looks at how genetic variation influences neurological diseases, particularly Lewy body disorders. Her work has advanced the use of single cell and long-read RNA sequencing to map disease pathways and identify potential targets for new treatments. Her expertise in clinical care and functional genomics has enabled her to bridge the gap between patient experience and scientific discovery.
Professor Andrew Morris CBE FRSE PMedSci, President of the Academy of Medical Sciences, said: “The breadth of disciplines represented in this year’s cohort – from mental health and infectious disease to cancer biology and respiratory medicine – reflects the rich diversity of medical science today. Their election comes at a crucial time when scientific excellence and collaboration across disciplines are essential for addressing global health challenges both now and in the future. We look forward to working with them to advance biomedical research and create an environment where the best science can flourish for the benefit of people everywhere.”
The new Fellows will be formally admitted to the Academy at a ceremony on Wednesday 9 July 2025.
Four Cambridge biomedical and health researchers are among those announced today as newly-elected Fellows of the Academy of Medical Sciences.
Big T Images for Academy of Medical SciencesAcademy of Medical Sciences plaque
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Students from across the country get a taste of studying at Cambridge at the Cambridge Festival
We were delighted to welcome pupils from Warrington’s Lymm High School, Ipswich High School, The Charter School in North Dulwich, Rickmansworth School, Sutton Valance School in Maidstone as well as schools closer to home such as St Peter’s Huntingdon, Fenstanton Primary School, Barton Primary School, Impington Village College and St Andrews School in Soham.
Running over two days (25/26 March 2025) and held in the Cambridge Sports Centre, students went on a great alien hunt with Dr Matt Bothwell from the Institute of Astronomy, stepped back in time to explore Must Farm with Department of Archaeology and the Cambridge Archaeological Unit as well as learning to disagree well with Dr Elizabeth Phillips from The Woolf Institute.
Schools had a choice of workshops from a range of departments including, how to think like an engineer and making sustainable food with biotechnology with researchers from the Department of Chemical Engineering and Biotechnology, as well as the chance to get hands-on experience in the world of materials science and explore how properties of materials can be influenced by temperature at the Department of Materials Science and Metallurgy.
The Department of Veterinary Medicine offered students the opportunity to find out what a career in veterinary medicine may look like with workshops on animal x-rays, how different professionals work together to treat animals in a veterinary hospital as well as meeting the departments horses and cows and learn how veterinarians diagnose and treat these large animals.
Students also had the opportunity to learn about antibodies and our immune system with the MRC Toxicology Unit. The students learnt about the incredible job antibodies do defending our bodies against harmful invaders like bacteria and viruses.
Alongside this, a maths trail, developed by Cambridgeshire County Council, guided students around the West Cambridge site whilst testing their maths skills with a number of problems to solve.
Now in their third year, the Cambridge Festival schools days are offering students the opportunity to experience studying at Cambridge with a series of curriculum linked talks and hands on workshops.
The Cambridge Festival runs from 19 March – 4 April and is a mixture of online, on-demand and in-person events covering all aspects of the world-leading research happening at Cambridge. The public have the chance to meet some of the researchers and thought-leaders working in some of the pioneering fields that will impact us all.
Over 500 KS2 and KS3 students from as far away as Warrington got the chance to experience studying at the University of Cambridge with a selection of lectures and workshops held as part of the Cambridge Festival.
Students make antibody keychains during a workshop with the MRC Toxicology Unit
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When inflammation goes too far
Clare Bryant, Professor of Innate Immunity, is a molecular detective. Clare allows us to see how inflammation functions across species, and when our defence systems go too far.
Scientists identify genes that make humans and Labradors more likely to become obese
Researchers studying British Labrador retrievers have identified multiple genes associated with canine obesity and shown that these genes are also associated with obesity in humans.
The dog gene found to be most strongly associated with obesity in Labradors is called DENND1B. Humans also carry the DENND1B gene, and the researchers found that this gene is also linked with obesity in people.
DENND1B was found to directly affect a brain pathway responsible for regulating the energy balance in the body, called the leptin melanocortin pathway.
An additional four genes associated with canine obesity, but which exert a smaller effect than DENND1B, were also mapped directly onto human genes.
“These genes are not immediately obvious targets for weight-loss drugs, because they control other key biological processes in the body that should not be interfered with.
But the results emphasise the importance of fundamental brain pathways in controlling appetite and body weight,” said Alyce McClellan in the University of Cambridge’s Department of Physiology, Development and Neuroscience, and joint first author of the report.
“We found that dogs at high genetic risk of obesity were more interested in food,” said Natalie Wallis in the University of Cambridge’s Department of Physiology, Development and Neuroscience, and joint first author of the report.
She added: “We measured how much dogs pestered their owners for food and whether they were fussy eaters. Dogs at high genetic risk of obesity showed signs of having higher appetite, as has also been shown for people at high genetic risk of obesity.”
The study found that owners who strictly controlled their dogs’ diet and exercise managed to prevent even those with high genetic risk from becoming obese - but much more attention and effort was required.
Similarly, people at high genetic risk of developing obesity will not necessarily become obese, if they follow a strict diet and exercise regime - but they are more prone to weight gain.
As with human obesity, no single gene determined whether the dogs were prone to obesity; the net effect of multiple genetic variants determined whether dogs were at high or low risk.
The results are published today in the journal 'Science'.
“Studying the dogs showed us something really powerful: owners of slim dogs are not morally superior. The same is true of slim people. If you have a high genetic risk of obesity, then when there’s lots of food available you’re prone to overeating and gaining weight unless you put a huge effort into not doing so,” said Dr Eleanor Raffan, a researcher in the University of Cambridge’s Department of Physiology, Development and Neuroscience who led the study.
She added: “By studying dogs we could measure their desire for food separately to the control owners exerted over their dog’s diet and exercise. In human studies, it’s harder to study how genetically driven appetite requires greater willpower to remain slim, as both are affecting the one person.”
The current human obesity epidemic is mirrored by an obesity epidemic in dogs. About 40-60% of pet dogs are overweight or obese, which can lead to a range of health problems.
Dogs are a good model for studying human obesity: they develop obesity through similar environmental influences as humans, and because dogs within any given breed have a high degree of genetic similarity, their genes can be more easily linked to disease.
To get their results, the researchers recruited owners with pet dogs in which they measured body fat, scored ‘greediness’, and took a saliva sample for DNA. Then they analysed the genetics of each dog. By comparing the obesity status of the dog to its DNA, they could identify the genes linked to canine obesity.
Dogs carrying the genetic variant most associated with obesity, DENND1B, had around 8% more body fat than those without it.
The researchers then examined whether the genes they identified were relevant to human obesity. They looked at both large population-based studies, and at cohorts of patients with severe, early onset obesity where single genetic changes are suspected to cause the weight gain.
The researchers say owners can keep their dogs distracted from constant hunger by spreading out each daily food ration, for example by using puzzle feeders or scattering the food around the garden so it takes longer to eat, or by choosing a more satisfying nutrient composition for their pets.
Raffan said: “This work shows how similar dogs are to humans genetically. Studying the dogs meant we had reason to focus on this particular gene, which has led to a big advance in understanding how our own brain controls our eating behaviour and energy use.”
The research was funded by Wellcome, the BBSRC, Dogs Trust, Morris Animal Foundation, MRC, France Genomique consortium, European Genomic Institute for Diabetes, French National Center for Precision Diabetic Medicine, Royal Society, NIHR, Botnar Foundation, Bernard Wolfe Health Neuroscience Endowment, Leducq Fondation, Kennel Club Charitable Trust.
Reference
Wallis, N.J. et al: ‘Canine genome-wide association study identifies DENND1B as an obesity gene in dogs and humans.’ Science, March 2025. DOI: 10.1126/science.ads2145
Researchers at the University of Cambridge have discovered genes linked to obesity in both Labradors and humans. They say the effects can be over-ridden with a strict diet and exercise regime.
Dogs at high genetic risk of obesity showed signs of having higher appetite, as has also been shown for people at high genetic risk of obesity.Natalie WallisJames Barker on UnsplashLabrador licking nose
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