Paediatric Solid Tumour Biology and Therapeutics Group

Professor Louis Chesler’s group is investigating the genetic causes for the childhood cancers, neuroblastoma, medulloblastoma and rhabdomyosarcoma. 

Research, projects and publications in this group

Our group's aim is to improve the treatment and survival of children with neuroblastoma, medulloblastoma and rhabdomyosarcoma.

The goal of our laboratory is to improve the treatment and survival of children with neuroblastoma, medulloblastoma and rhabdomyosarcoma, three paediatric solid tumours in which high-risk patient cohorts can be defined by alterations in a single oncogene. We focus on the role of the MYCN oncogene, since aberrant expression of MYCNis very significantly associated with high-risk in all three diseases and implies that they may have a common cell-of-origin.

Elucidating the molecular signalling pathways that control expression of the MYCN oncoprotein and targeting these pathways with novel therapeutics is a major goal of the laboratory. We use a variety of innovative preclinical drug development platforms for this purpose.

Technologically, we focus on genetically engineered cancer models incorporating novel imaging (optical and fluorescent) modalities that can be used as markers to monitor disease progression and therapeutic response.

Our group has several key objectives:

  • Mechanistically dissect the role of the MYCN oncogene, and other key oncogenic driver genes in poor-outcome paediatric solid tumours (neuroblastoma, medulloblastoma, rhabdomyosarcoma).
  • Develop novel therapeutics targeting MYCN oncoproteins and other key oncogenic drivers
  • Develop improved genetic cancer models dually useful for studies of oncogenesis and preclinical development of novel therapeutics.
  • Use such models to develop and functionally validate optical imaging modalities useful as surrogate markers of tumour progression in paediatric cancer.

Professor Louis Chesler

Clinical Senior Lecturer/Group Leader:

Paediatric Solid Tumour Biology and Therapeutics Professor Louis Chesler (Profile pic)

Professor Louis Chesler is working to understand the biology of children’s cancers and use that information to discover and develop new personalised approaches to cancer treatment. His work focuses on improving the understanding of the role of the MYCN oncogene.

Researchers in this group

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Email: [email protected]

Location: Sutton

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Phone: +44 20 3437 6124

Email: [email protected]

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Email: [email protected]

Location: Sutton

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Phone: +44 20 8722 4186

Email: [email protected]

Location: Sutton

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Phone: +44 20 3437 3501

Email: [email protected]

Location: Sutton

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Email: [email protected]

Location: Sutton

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Phone: +44 20 8722 4361

Email: [email protected]

Location: Sutton

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Email: [email protected]

Location: Sutton

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Phone: +44 20 3437 6118

Email: [email protected]

Location: Sutton

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Email: [email protected]

Location: Sutton

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Phone: +44 20 3437 6196

Email: [email protected]

Location: Sutton

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Email: [email protected]

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Email: [email protected]

Location: Sutton

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OrcID: 0000-0003-3977-7020

Phone: +44 20 3437 6109

Email: [email protected]

Location: Sutton

I obtained an MSci in Biochemistry from the University of Glasgow in 2018. In October 2018 I joined the labs of Dr Michael Hubank and Professor Andrea Sottoriva to investigate the use of liquid biopsy to monitor clonal frequency and emergence of resistance mutations in paediatric cancers.

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Email: [email protected]

Location: Sutton

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Email: [email protected]

Location: Sutton

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Email: [email protected]

Location: Sutton

Professor Louis Chesler's group have written 113 publications

Most recent new publication 4/2025

See all their publications

Vacancies in this group

Working in this group

Group Leader in In Vivo Cancer Modelling

  • Sutton
  • Cancer Biology
  • Salary : From £66,092 per annum

The Institute of Cancer Research (ICR) in London seeks to appoint a Group Leader in In Vivo Cancer Modelling to play a pivotal role in advancing our cutting-edge cancer research. The position is based at the newly established Centre for In Vivo Modelling (CIVM), part of the Division of Cancer Biology. We welcome applications at both the Career Development Faculty and Career Faculty levels. Key Requirements The successful candidate will generate and employ state-of-the-art genetic and humanised mouse models of cancer to tackle fundamental and translational questions in haemato-oncology and/or solid tumour oncology. In addition to leading a successful research group, they will expand the CIVM's research capabilities and foster productive collaborations with other groups and centres at the ICR, thus promoting in vivo modelling by integrating it into multidisciplinary projects and initiatives. Applicants must have an internationally recognised track record of leading research in in vivo modelling and advanced mouse genetics, demonstrated by high-quality publications and significant funding success. For more junior candidates, an outstanding track record in cancer research, coupled with a compelling research vision leveraging advanced genetic mouse models and clear potential to secure competitive external funding, is essential. As part of your online application you will be required to upload your full CV which will pre-populate your application form, you will also be asked to attach the following documents and failure to do so will mean your application cannot be considered on this occasion: Lists of major publications, achievements, research grants, distinctions. Research plan (five to six pages outlining your current research interests and research programme for the next 5 years) A PDF of a maximum of five key publications, or other research outputs (e.g. patents) that best demonstrate previous productivity You must also complete the personal statement section of the application form in the format of a covering letter including the names and contact details of three academic referees Department/Directorate Information: The ICR is one of the world’s most influential cancer research institutions, with an outstanding track record of achievement dating back more than 100 years. In addition to being one of the UK’s leading higher education institutions for research quality and impact, the ICR is consistently ranked among the world’s most successful for industry collaboration. As a member institution of the University of London, we also provide postgraduate higher education of international distinction. One of the ICR’s key research strategies is to defeat cancer by viewing it as a dynamic ecosystem. We aim to solidify our expertise in state-of-the-art in vivo cancer models to probe these complex cancer ecosystems, discover their underlying biology, and identify new therapeutic targets. The postholder will significantly contribute to driving these strategic priorities. We encourage all applicants to access the job pack attached for more detailed information regarding this role. If you would like to informally discuss this position, please contact Professor Kamil R. Kranc ([email protected]), Director of the Centre for In Vivo Modelling, or Professor Chris Jones ([email protected]), Head of the Division of Cancer Biology at the ICR.

Postdoctoral Training Fellow - Microenvironment

  • Sutton
  • Translational Immunotherapy
  • Salary: £45,600
  • Fixed term

Under the guidance of Anna Wilkins and Magnus Dillon, we are seeking to recruit a Postdoctoral Training Fellow to contribute to a project on the microenvironmental effects of radiotherapy, assessing the microenvironmental effects of advanced radiation technologies in vivo and conducting analyses of radiotherapy-treated human tumour tissues. The successful candidate will play a key role in developing our knowledge of the effect of radiation (microbeam +/- FLASH) on fibroblast and myeloid populations in pancreatic and bladder cancer models. About you The successful candidate must have: - a home office licence and prior experience of in vivo mouse work - immunology experience, either using multiparameter flow cytometry, development and analysis of multiplex immunofluorescence or spatial transcriptomic data analysis Candidates who are nearing completion of their PhD may apply, but confirmation on awarded PhD is required within 6 months of employment. The ICR has a workforce agreement stating that Postdoctoral Training Fellows can only be employed for up to 7 years as PDTF at the ICR, providing total postdoctoral experience (including previous employment at this level elsewhere) does not exceed 7 years. For general information on Postdocs at The ICR, more information can be found here. Department/Directorate Information The Division of Radiotherapy and Imaging brings together research groups that work on how to use radiation therapy, guided by state-of-the-art imaging techniques, in the most effective way to cure cancer. Our work is based on the central idea that the best outcomes will be achieved by delivering curative radiation doses to tumours, while limiting radiation damage of neighbouring normal tissues. Our therapy often includes adding drug treatments alongside radiation therapy as a means of killing cancer cells more effectively and, at the same time, activating anti-tumour immune responses. Preclinical work includes research that combines radiation therapy with radiation sensitisers and biological response modifiers (for example innate immune activators, immune checkpoint inhibitors) to maximise anti-tumour efficacy and give protection against tumour recurrence. Multiple translational clinical studies seek to address these themes through our collaborators in the Royal Marsden. Overall, our mission is to cure more patients with fewer immediate and long-term side effects of treatment. Biological enhancement of radiotherapy and Stromal Radiobiology Groups The Biological Enhancement of Radiotherapy and Stromal Radiobiology Groups (led by Magnus Dillon and Anna Wilkins) aim to understand how the tumour microenvironment drives radiotherapy resistance. The groups focus on gastrointestinal and bladder cancers with an emphasis on integrating findings from preclinical models and patient samples. The immunostimulatory effect of radiation is often restrained by suppressive cells in the tumour microenvironment. These include certain populations of cancer-associated fibroblasts, macrophages, myeloid-derived suppressor cells and tumour-associated neutrophils. Both fibroblast and macrophage activation and polarity can be affected by radiation, with dose-dependent effects. The effect of dose-rate is unknown, but delivering radiation at ultra-high dose-rates (FLASH) is believed to have reduced effects on normal tissues, including immune cells. Microbeam radiotherapy offers the opportunity to modulate different spatially-distributed populations by exposure to different radiation doses. Using these technologies may allow the delivery of radiation which (a) preserves and (b) stimulates anti-tumour immune cells, when compared to standard treatment. We work collaboratively within other groups in the Centre for Immunotherapy of Cancer and the Centre for Cancer Imaging What we offer A dynamic and supportive research environment Access to state-of-the-art facilities and professional development opportunities Collaboration with leading researchers in the field Competitive salary and pension We encourage all applicants to access the job pack attached for more detailed information regarding this role. For an informal discussion regarding the role, please contact [email protected] or [email protected]

Industrial partnership opportunities with this group

Opportunity: A novel test for predicting future cancer risk in patients with inflammatory bowel disease

Commissioner: Professor Trevor Graham

Recent discoveries from this group

18/07/25

Thousands of women with breast cancer could be spared unnecessary treatment, thanks to a simple test which can identify whether or not their cancer is likely to return – just two weeks after starting treatment.

The test – which is already approved for clinical use – could have a transformative impact on the treatment of oestrogen receptor positive, human epidermal growth factor receptor 2 positive (ER+/HER2+) breast cancer, which accounts for 200,000 cases per year worldwide.

Subtypes based on molecular differences

A team of scientists from The Institute of Cancer Research, London, identified a set of subtypes of ER+/HER2+ breast cancer that will help clinicians to develop more personalised treatment strategies for the disease – allowing some patients to avoid side effects of unnecessary treatment, and moving other patients onto more intensive therapies at an earlier stage.

One in 10 cases of breast cancer is ER+/HER2+. Patients have varying responses to the same treatment due to the molecular differences in their tumours.

The Institute of Cancer Research (ICR) team analysed tumour samples from 213 patients participating in the phase III  POETIC trial, which tested the benefit of hormone therapy before and after surgery – compared with post-surgery alone – to reduce the risk of cancer coming back in women with early-stage, ER+ breast cancer.

Hormone therapy alters the subtype

The POETIC trial – a study co-sponsored by the ICR and The Royal Marsden NHS Foundation Trust and managed by the ICR Clinical Trials and Statistics Unit (ICR-CTSU) – did not suggest a clear benefit of two weeks of hormone therapy before surgery for all patients.

However, this new research shows the hormone therapy can indicate which post-surgery treatment is best for each patient. The researchers are calling for all patients to be offered this short-term hormone therapy.

In research published in the journal eBioMedicine, the team analysed tumour samples taken before and after this short-term treatment, to see how the tumour responds.

The research was funded by the ICR, which is a charity as well as a research institute, Breast Cancer Now and  NanoString, which provided genetic profiling technology, and the National Institute for Health and Care Research (NIHR) Biomedical Research Centre at The Royal Marsden and the ICR. The POETIC trial itself was funded by Cancer Research UK.

Decisions about ongoing care

The same team previously identified five subtypes of ER+/HER2+ breast cancer based on the molecular and genetic features of the tumours. This current research looked at two subtypes – Luminal A and Luminal B.

In the new study, the team showed that just two weeks of hormone therapy changes the characteristics of some tumours, causing them to shift their subtype.

The subtype of the tumour after treatment was an even stronger predictor of the risk of cancer coming back. Some tumours changed to the less aggressive subtypes, suggesting the treatment is working – which could help guide decisions about ongoing care.

Identify those at highest risk of relapse

Tumours which remained Luminal A after two weeks of treatment – 19 per cent of the tumours analysed – were associated with the lowest risk of relapse. The research team suggests these patients continue with their five years of hormone therapy – the standard of care for all ER+/HER2+ patients.

Of the 213 patient samples analysed, 28 per cent of tumours shifted from Luminal B subtype to the Luminal A subtype, suggesting that the treatment is working, and they should also continue with standard of care hormone therapy.

Patients with the highest risk of their cancer returning at five years had Luminal B tumours that did not change after this short-term hormone therapy. These patients – accounting for 6 per cent of the 213 patients in the study – were at least 1.5 times more likely to relapse than if their tumour shifted to the Luminal A subtype.

The researchers suggest that these patients will require more intensive treatment, such as CDK4/6 inhibitors, to keep their breast cancer at bay.

The study authors say the findings highlight the benefit of two weeks of hormone therapy before surgery to help guide clinical decision-making, providing patients with personalised treatment plans based on how their cancer responds to drugs, not just how tumours are initially classified.

Tailor treatment strategies

Dr Maggie Cheang, leader of the ICR-CTSU Integrative Genomic Analysis in Clinical Trials Team at The Institute of Cancer Research, London, said:

“To deliver truly personalised care, we need to refine how we classify breast cancer, so that each patient receives the treatment most likely to benefit them. While current classification relies on hormone receptor and HER2 status, we know that patients within these groups can respond very differently to the same therapy.

“Our earlier research identified distinct molecular subtypes within HER2-positive, oestrogen receptor–positive breast cancer. In this new study, we’ve shown that these subtypes can shift after just two weeks of hormone therapy.

“This insight helps us identify which patients are likely to respond well and which may show early signs of treatment resistance, offering the opportunity to tailor treatment strategies sooner. Ultimately, our findings move us closer to more precise, patient-centred care for this over-looked breast cancer subtype.”

“The POETIC trial benefited from strong collaboration and dialogue with Independent Cancer Patients’ Voice. I am grateful for the patient advocate group’s input, which was fundamental during the trial’s development. The group brings the views and experience of cancer patients, their families, and carers to the cancer research community.”

Define cancer by its molecular characteristics

Professor Kristian Helin, Chief Executive of The Institute of Cancer Research, London, said:

“We have long moved past defining cancer solely by where it starts in the body – we now know that its complex molecular characteristics will drive its behaviour. By decoding the underlying biology of tumours, we can tailor treatments to individual patients.

“This research offers insight into how the biology of some breast cancers changes in response to hormone therapy. I look forward to seeing how these findings inform treatment decisions in the future – helping some patients avoid unnecessary side effects, while ensuring that those with more aggressive tumours are offered alternative and more effective drugs.”

Professor Marian Knight, Scientific Director for NIHR Infrastructure, said: 

"The insights that the researchers at The Institute of Cancer Research have uncovered in this study will help clinicians deliver more personalised breast cancer care that will be transformative for some patients, saving them from unnecessary treatments and their side effects.

"Work like this, which is underpinned by the NIHR's investment in Biomedical Research Centres, is crucial to saving the NHS time and money and, ultimately, moving the dial on patient outcomes."