Targeting radiation driven invasion and metastasis in cancers of unmet need

Lead Research Organisation: University of Glasgow
Department Name: College of Medical, Veterinary, Life Sci

Abstract

Radiotherapy is used for a number of cancers, and while it is an effective and potentially curative treatment, it can induce unwanted behaviour in cancer cells that remain following therapy. One such behaviour is the induction of increased invasive potential, allowing cancers cells to disseminate and metastasise into normal tissue thus contributing to treatment resistance and recurrence.

This project aims to identify new therapeutic avenues that can be used alongside radiotherapy to contain metastatic spread in three cancers: glioblastoma, colorectal cancer and pancreatic cancer. These cancers are currently of unmet need and novel, innovative therapies are urgently required to improve outcomes and survival rates. The work proposed will further our understanding of the processes that drive invasion and metastasis in these cancers, leading to the identification of novel anti-invasive, chemotherapeutic targets to improve patient outcomes in the future.

Planned Impact

Radiotherapy is the standard of care (SOC) for a large number of cancer types, and although an effective treatment, its potential to generate unwanted pro-metastatic phenotype in remaining cancer cells needs to be carefully managed to maximise treatment success. The proposed research has the potential to generate both novel mechanistic insights into the processes that underpin radiation driven cancer invasion and metastasis, but crucially, to also identify new therapeutic avenues in three cancers of current unmet need; glioblastoma, pancreatic and colorectal cancer, that can be used alongside current SOC to improve patient outcomes in the future.
The key beneficiaries will include:
1) Academic
The data generated from both the initial screens and validation experiments will be shared with the wider scientific community to help advance the cancer biology field. In addition, the models that are used to assess invasion and metastasis will be made accessible to other groups through collaborations and the provision of expertise.
2) Public healthcare services
One of the major potential outputs of the proposed research is the identification and pre-clinical validation of new chemotherapeutics for use alongside standard of care. Different radiotherapy regimes and advanced imaging will also be investigated using state of the art pre-clinical in vivo models. These outputs have a strong potential to inform clinical management of cancer patients in the future.
3) Commercial private sector beneficiaries
The engagement of industrial partnerships will be paramount to the successful translation of any identified therapies to the clinic. Industry collaborators will be secured at pertinent stages of target development.
4) Wider population
The major aim of the proposed research is to uncover new treatments to improve outcomes for patients with cancers that currently have dismal prognoses. This will hopefully lead to crucial improvements both to symptom management and survival rates
 
Description 1. While my previous research had focused on radiation driven invasion in glioblastoma, little was known about this process in pancreatic cancer (PDAC) and rectal cancer (RC). In the first two years of this award we were able to identify several key components of the process in PDAC and RC cells involving how cells respond and communicate with each other following radiotherapy. This gave a surprising result that the way these very different cancers respond to radiotherapy is conserved through the MRCK signalling pathway, opening up the possibility of using an MRCK inhibitor alongside radiotherapy to contain spread of disease during treatment. This approach was previously described as being effective in pre-clinical models of glioblastoma. We have now completed the in vitro work in PDAC, and are about to move into advanced pre-clinical in vivo models to validate this approach. If these studies yield positive results, translation of this inhibitor for clinical use in PDAC will be explored. In addition to the identification of MRCK as a targetable pathway in PDAC and RC, we have also identified several other new targets of interest (e.g. Acin1, TGFbeta) that will be explored in the coming years
2. Through our work with PDAC cells we were able to show that not all cell lines respond to radiotherapy in a pro-invasive manner. This offers up the possibility of identifying possible biomarkers that could be used in the clinic to predict which patients would be more susceptible to metastasis following radiotherapy, and this inform clinicians on their suitability for treatment. We are currently exploring the genetic differences between the responders and non-responders to identify these potential predictive biomarkers
3. A major aim of this fellowship was to perform a druggable genome screen to find new anti-invasive targets in glioblastoma. Unfortunately, due to Covid and unavailability of reagents, this was severely delayed. However, during this time, we have independently identified the cell cycle regulator, ATR, as a new anti-invasive target. We have tested the efficacy of targeting ATR rigorously in in vitro and in vivo studies, and this project is now at an advanced stage (preprint). As ATR inhibitors are already being tested in clinical trial for other cancers, this offers a very exciting potential new avenue of treatment that can be into the clinic.
4. This fellowship has been a springboard for developing new models, networks and collaborations. One of the most exciting of these is a connection with surgical partners in Glasgow who are willing to supply fresh tumour samples and allow us to establish a sophisticated technique that cultures fresh patient tumour samples (GBM and PDAC) in the laboratory which will be used to test new combinations of radiotherapy and chemotherapy. This is a powerful technique that ensures a faithful replication of the complexities of cancer, and will be a valuable addition to both the local and wider cancer research communities.
Exploitation Route Once the pre-clinical testing is complete, we will use our clinical and industry connections to move our identified anti-invasive compounds towards clinical trials, with the hope of ultimately adding new treatment options to these cancers of current unmet need. In addition, identification of common druggable targets across three different cancers raises the possibility of any new anti-invasive drug that is identified from this project being utilised across other metastatic cancer types (e.g. breast cancer).
As a part of this project we have also developed various research tools and models that can be utilised by others in the field of cancer research and beyond, such as the patient ex vivo tissue model described above. These techniques will be made available to the research community.
Finally, our interrogation into the mechanisms that drive invasion in cancer will help to inform the field, and lead to further discovery and translational science.
Sectors Healthcare,Pharmaceuticals and Medical Biotechnology

URL https://www.researchsquare.com/article/rs-967109/v1
 
Description The findings from this project so far have brought the potential clinical impact of radiation driven invasion and metastasis to the attention of the radio-oncology field. I have recently been invited to give a teaching lecture on the subject at the 2023 European Society for Therapeutic Radiology and Oncology, Europe's largest meeting of radio-oncologists, highlighting the rising interest in this specific area of research.
First Year Of Impact 2022
Sector Healthcare,Pharmaceuticals and Medical Biotechnology
 
Description Combining Radiation with JAK inhibitors as a novel therapeutic strategy for rectal cancer 
Organisation Francis Crick Institute
Country United Kingdom 
Sector Academic/University 
PI Contribution Provision of rectal cancer cell lines and expertise in pre-clinical irradiation
Collaborator Contribution Principal drivers of the project, plus expert support
Impact CRUK RadNet seed funding Combining Radiation with JAK inhibitors as a novel therapeutic strategy for rectal cancer
Start Year 2021
 
Description Combining Radiation with JAK inhibitors as a novel therapeutic strategy for rectal cancer 
Organisation University College London
Country United Kingdom 
Sector Academic/University 
PI Contribution Provision of rectal cancer cell lines and expertise in pre-clinical irradiation
Collaborator Contribution Principal drivers of the project, plus expert support
Impact CRUK RadNet seed funding Combining Radiation with JAK inhibitors as a novel therapeutic strategy for rectal cancer
Start Year 2021
 
Description Combining Radiation with JAK inhibitors as a novel therapeutic strategy for rectal cancer 
Organisation University of Glasgow
Department Institute of Cancer Sciences
Country United Kingdom 
Sector Academic/University 
PI Contribution Provision of rectal cancer cell lines and expertise in pre-clinical irradiation
Collaborator Contribution Principal drivers of the project, plus expert support
Impact CRUK RadNet seed funding Combining Radiation with JAK inhibitors as a novel therapeutic strategy for rectal cancer
Start Year 2021
 
Description Combining Radiation with JAK inhibitors as a novel therapeutic strategy for rectal cancer 
Organisation University of Oxford
Department Nuffield Department of Medicine
Country United Kingdom 
Sector Academic/University 
PI Contribution Provision of rectal cancer cell lines and expertise in pre-clinical irradiation
Collaborator Contribution Principal drivers of the project, plus expert support
Impact CRUK RadNet seed funding Combining Radiation with JAK inhibitors as a novel therapeutic strategy for rectal cancer
Start Year 2021
 
Description Development of a collated rectal cancer cell bank 
Organisation University of Glasgow
Department Institute of Cancer Sciences
Country United Kingdom 
Sector Academic/University 
PI Contribution Principal investigator
Collaborator Contribution Supporting expertise and materials
Impact CRUK RadNet Preclinical models development grant
Start Year 2021
 
Description Investigating pro-invasive gene signatures arising from acute irradiation of pancreatic cancer cells 
Organisation University of Glasgow
Department Institute of Cancer Sciences
Country United Kingdom 
Sector Academic/University 
PI Contribution Principal investigator
Collaborator Contribution Supporting expertise
Impact CRUK Radnet pump priming award
Start Year 2022
 
Description Pilot study to develop a preclinical rectal cancer organoid platform 
Organisation University of Glasgow
Department Institute of Cancer Sciences
Country United Kingdom 
Sector Academic/University 
PI Contribution Expertise in preclinical radiotherapy
Collaborator Contribution Principal investigators
Impact CRUK RadNet preclinical models development award
Start Year 2021
 
Description Interview for a high school newspaper 
Form Of Engagement Activity A magazine, newsletter or online publication
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Schools
Results and Impact I was interviewed by a high school pupil about my research and my experience of becoming a scientist
Year(s) Of Engagement Activity 2021