August 16, 2018
Ottawa researchers discover a new way to make cancer cells more susceptible to virus-based therapies
Over the past decade, researchers have made significant progress in designing oncolytic viruses (OVs) – viruses that destroy cancer cells while leaving healthy tissue unharmed. However, some cancer cells are resistant to this type of therapy and their resistance mechanisms remain poorly understood.
Researchers at the The Ottawa Hospital and University of Ottawa, under the leadership of Dr. Carolina Ilkow, have discovered that a common cellular mechanism, RNAi, allows cancer cells to fight back against cancer-fighting viruses. Their findings, recently published in the Journal for Immunotherapy of Cancer, show that blocking RNAi processes in tumours can make cancer cells more susceptible to OVs.
January 19, 2018
Immunotherapy, which boosts the body’s immune system to kill cancer cells, has shown remarkable promise in treating many types of cancer. Now researchers have found a way to use immunotherapy against triple-negative breast cancer (TNBC), one of the most lethal forms of breast cancer. Previously, TNBC was resistant to immune checkpoint inhibitors, a common class of immunotherapies. Using a new strategy, the scientists achieved a cure rate of up to 90 per cent in mouse models.
January 4, 2018
Researchers at The Ottawa Hospital and the University of Ottawa have found that a combination of two immunotherapies – oncolytic viruses and checkpoint inhibitors – was successful in treating triple-negative breast cancer in mouse models. Triple-negative breast cancer is the most aggressive and hard-to-treat form of the disease.
October 11, 2017
Partners congratulate Turnstone Biologics
Canadian academic institutions and research organizations are congratulating Turnstone Biologics on a new partnership with AbbVie to develop cancer-fighting viruses (also called oncolytic viral immunotherapies).
Turnstone was founded in Ottawa based on research led by Dr. John Bell (from The Ottawa Hospital and uOttawa), Dr. Brian Lichty (from McMaster University) and Dr. David Stojdl (from the Children’s Hospital of Eastern Ontario and uOttawa). The Ontario Institute for Cancer Research (OICR) and BioCanRx have also played a key role in advancing the technology.
Quick Facts and Links
- Turnstone was recently recognized as one of the top 15 biotech start-ups in the world.
- In 2016, Turnstone secured US$41 million in venture capital (VC) funding. This is believed to be the largest VC deal in Ottawa since 2013 and the second largest biotech VC deal in Canada in 2016.
- As of October 2017, Turnstone had 25 employees in Ottawa, Hamilton and New York. It expects to approximately double its employees by the end of next year.
- Turnstone’s most advanced product is called Ad-MG1-MAGEA3. It is produced in The Ottawa Hospital’s Biotherapeutics Manufacturing Centre and the McMaster Immunology Research Centre.
- Top journal Science called cancer immunotherapy the “breakthrough of the year” in 2013.
- Ad-MG1-MAGEA3 is currently being tested in clinical trials at several hospitals across Canada. People who are interested in participating in these trials can read these frequently asked questions.
- While public funding is crucial for cancer research discoveries, private investment is almost always necessary to advance the development of new therapies, as this can cost more than US$2.5 billion.
- Turnstone was co-founded by FACIT, The Ontario Institute for Cancer Research’s commercialization partner, which provided initial management, seed financing, intellectual property consolidation and hiring of initial employees including the CEO.
- Numerous organizations have supported the research team, including the Alliance for Cancer Gene Therapy, Angels of Hope, BioCanRx, the Canada Foundation for Innovation, the Canadian Cancer Society Research Institute, the Canadian Institutes of Health Research, CHEO Foundation, Hair Donation Ottawa, the Ontario Institute for Cancer Research, the Ontario Ministry of Research, Innovation and Science, The Ottawa Hospital Foundation, the Ottawa Regional Cancer Foundation and the Terry Fox Research Institute.
July 11, 2017
The body’s immune system is incredibly powerful. Its ability to detect and destroy various pathogens makes it central to maintaining good health. While we all know the role it plays in fighting the common cold or flu, many do not know that it has recently been enlisted by scientists in the fight against cancer. Researchers in a field known as immuno-oncology are working to find ways to turn on the body’s defences to locate and destroy tumour cells. OICR recently established a team of expert scientists and clinicians to develop and test new immunotherapies to help patients.
May 25, 2017
OICR launches five all-star teams of Ontario scientists to tackle some of the deadliest forms of cancer
Great strides have been made in cancer research, but much work remains to develop better treatments for the most lethal cancers and to advance new anti-cancer technologies. OICR is taking on a new approach, building on the success of the Institute’s first ten years and Ontario’s strength in particular cancer research areas. Reza Moridi, Ontario’s Minister of Research, Innovation and Science announced that the Institute is funding five collaborative, cross-disciplinary and inter-institutional Translational Research Initiatives (TRIs) with a total of $24 million over the next two years.
The TRIs will bring together some of the top cancer researchers in Ontario and be led by internationally renowned Ontario scientists. Each team will focus on a certain type of cancer or therapeutic technology. To maximize the positive impact of research on patients, the TRIs all incorporate clinical trials into their design. The TRIs, which were selected by an International Scientific Review Panel, are:
- Acute Leukemia TRI (led by Drs. John Dick and Aaron Schimmer at the University Health Network (UHN))
- Brain Cancer TRI (led by Drs. Peter Dirks and Michael Taylor at SickKids)
- Immuno-oncology TRI (ACTION) (led by Drs. John Bell and Marcus Butler at The Ottawa Hospital and UHN)
- Ovarian Cancer TRI (led by Drs. Amit Oza and Rob Rottapel at UHN)
- Pancreatic Cancer TRI (PanCuRx) (led by Dr. Steven Gallinger at UHN)
The funding will also support Early Prostate Cancer Developmental Projects led by Drs. Paul Boutros and George Rodriguez.
“In just over 10 years, the Ontario Institute for Cancer Research has become a global centre of excellence that is moving the province to the forefront of discovery and innovation in cancer research. It is home to outstanding Ontario scientists, who are working together to ease the burden of cancer in our province and around the world,” said Moridi.
“Collaboration and translational research are key to seeing that the innovative technologies being developed in Ontario reach the clinic and help patients,” said Mr. Peter Goodhand, President of OICR. “These TRIs represent a unique and significant opportunity to impact clinical cancer care in the province.”
— SickKids_TheHospital (@SickKidsNews) May 25, 2017
— UHN (@UHN_News) May 25, 2017
— The Ottawa Hospital (@OttawaHospital) May 25, 2017
May 25, 2017
OICR launches five large-scale Ontario research initiatives to combat some of the most deadly cancers
Toronto (May 25, 2017) – Reza Moridi, Ontario’s Minister of Research, Innovation and Science, today announced the Ontario Institute for Cancer Research is launching five unique, cross-disciplinary, multi-institutional Translational Research Initiatives (TRIs), each focused on a single type of or treatment approach to cancer. With $24 million in funding over two years, the TRIs will bring together world-leading scientists to tackle some of the most difficult to treat cancers and test innovative solutions to some of the most serious challenges in cancer today.
The TRIs build on Ontario’s proven strengths in areas such as stem cells, immuno-oncology, pediatric cancers, genomics, clinical trials and informatics. Working together, the province’s top scientists and clinicians will accelerate the development of much needed solutions for patients around the globe, with a focus on acute leukemia and brain, ovarian and pancreatic cancers. Each TRI includes clinical trials to maximize patient impact.
February 15, 2017
Biotherapeutics, a relatively new class of treatments, have shown great promise and are generating a lot of excitement in the cancer research community. These treatments harness the power of oncolytic viruses, cell therapies and antibodies to kill cancer. BioCanRX, Canada’s biotherapeutics research network, has announced $11 million in funding for 16 projects that will enable scientists across the country to bring their innovations to patients sooner.
November 2, 2016
OrbiMed, Versant-led round continues commercialization success for Turnstone’s cancer therapies
TORONTO, Nov. 2, 2016 /CNW/ – Turnstone Biologics Inc. (“Turnstone”), an Ontario-based developer of novel oncolytic viral immunotherapies, announced the closing of a USD $41.4 million Series B financing led by OrbiMed Advisors LLC (“OrbiMed”) and Versant Ventures (“Versant”), which led Turnstone’s Series A round in October 2015. New investor F-Prime Capital Partners (“F-Prime”) and existing founding investor FACIT also participated. Proceeds from the financing will support an ongoing Phase I/II clinical trial in patients with advanced or metastatic solid tumours as well as accelerate and expand Turnstone’s pipeline, funding the development of three additional programs into the clinic. In connection with the financing Orbimed’s Rishi Gupta, JD and F-Prime’s Ben Auspitz will join Turnstone’s board of directors alongside Versant’s Brad Bolzon, PhD and Jerel Davis, PhD as well as FACIT’s Jeff Courtney.
January 5, 2016
Drs. John Bell, David Stojdl and Brian Lichty have together been investigating viral therapies for over 15 years. On July 10 in Ottawa they announced that this work has now moved to the clinic, with the launch of a world-first clinical trial using their custom-made cancer-fighting viruses.
Dr. Bell is leader of OICR’s Immuno- and Bio-therapies Program (ORBiT), based at the Ottawa Hospital Research Institute.
July 10, 2015
OTTAWA, July 10, 2015 /CNW/ – Canadian researchers have launched the world’s first clinical trial of a novel investigational therapy that uses a combination of two viruses to attack and kill cancer cells, and stimulate an anti-cancer immune response. Previous research by this team and others worldwide suggests that this approach could be very powerful, and could have fewer side effects than conventional chemotherapy and radiation, although it will take years to rigorously test through this trial and others.
The therapy was jointly discovered and is being developed by Dr. David Stojdl (Children’s Hospital of Eastern Ontario, University of Ottawa), Dr. Brian Lichty (McMaster University) and Dr. John Bell (The Ottawa Hospital, University of Ottawa), and their respective research teams and colleagues. The clinical trial, which is funded by the Ontario Institute for Cancer Research and coordinated by the NCIC Clinical Trials Group, is expected to enroll up to 79 patients at four hospitals across Canada. Up to 24 patients will receive one of the viruses and the rest will receive both, two weeks apart.
Christina Monker, 75, a former nurse from Rockland, Ontario, is one of the first patients treated in the trial. She was diagnosed with cancer in 2012 and, despite six weeks of radiation therapy and two rounds of chemotherapy, the cancer spread to both her lungs. After completing another 30 rounds of chemotherapy, she enrolled in the trial at The Ottawa Hospital and was treated on June 2, 2015.
“The nausea of chemotherapy was worse than I ever could have imagined, but with the viral therapy I just felt like I had the flu for a couple of days, and the symptoms were easily managed,” said Ms. Monker. “It is too soon to know if I may have benefited from this therapy, but I’m very glad to contribute to this important research that could improve care for others.”
The idea of using viruses to treat cancer has been around for more than a century, with sporadic reports of cancer patients experiencing remarkable recoveries after viral infections. However, it is only in recent years that viral therapy has begun to be developed and tested in a rigorous way. Drs. Bell, Lichty and Stojdl began investigating viral therapies for cancer nearly 15 years ago when they worked together at The Ottawa Hospital.
“We found that when normal cells become cancerous, it’s like they are making a deal with the devil,” explained Dr. Bell, a senior scientist at The Ottawa Hospital and professor at the University of Ottawa. “They acquire genetic mutations that allow them to grow very quickly, but these same mutations also make them more susceptible to viruses.”
The two viruses being tested in this clinical trial are called MG1MA3 and AdMA3. MG1MA3 is derived from a virus called Maraba, which was first isolated from Brazilian sandflies, while AdMA3 is derived from a common cold virus called Adenovirus. Both of these viruses have been engineered to stimulate an immune response against cancer cells that express a protein called MAGE-A3, but the Maraba virus also achieves an extra layer of anti-cancer activity by replicating inside many kinds of cancer cells and killing them directly. These viruses are manufactured in specialized facilities at The Ottawa Hospital and McMaster University.
“The idea behind this trial is to use the Adenovirus to prime the patient’s immune system to recognize their cancer, and then use the Maraba virus to directly kill their cancer and further stimulate their immune system to prevent the cancer coming back,” said Dr. Brian Lichty, associate professor at McMaster University. “We’re enthusiastic about the potential of this unique therapy.”
“We’re very excited about this first clinical trial,” said Dr. Stojdl, senior scientist at the Children’s Hospital of Eastern Ontario and associate professor at the University of Ottawa. “We’re continuing to push very hard to develop a suite of biological therapies with the goal of launching similar trials tailored to other types of tumours, including brain cancer and several devastating childhood cancers.”
Viral therapies are one component of a growing field of cancer research that seeks to use biological materials (including cells, genes, antibodies and viruses) to attack cancer cells and stimulate an anti-cancer immune response. This field of research has been called biotherapy or immunotherapy. Dr. Bell and his colleagues recently launched the $60M BioCanRx network to advance this area of research.
The Maraba virus is an important part of a broad biotherapeutics clinical trial development program in Canada that is combining viruses and vaccines with standard and emerging therapies to treat different types of tumours. Drs. Lichty, Bell and Stojdl and their institutions, in cooperation with the Fight Against Cancer Innovation Trust, have formed Turnstone Biologics in order to engage the private sector and to help fund further clinical trials.
“Immunotherapy is a very exciting field of cancer research, with antibody-based therapies showing the most promise in clinical trials so far,” said Dr. Derek Jonker, the overall lead for the clinical trial, a medical oncologist at The Ottawa Hospital and a professor at the University of Ottawa. “Viral therapies have also shown promise in laboratory studies, but it is too soon to know what impact they may have on patients. This clinical trial will help us find out and we’re very grateful to the patients who have participated.”
“Ontario is pleased to support innovative research through the Ontario Institute for Cancer Research,” said Reza Moridi, Ontario Minister of Research and Innovation. “Our investments have enabled our researchers to be at the forefront of this new therapy. Immunotherapy has the potential to vastly improve the way cancer is treated, and is another example of how research investment brings tangible benefits to Ontarians and people around the world.”
“The NCIC Clinical Trials Group is very pleased to conduct this trial, which offers a potential new therapeutic approach for cancer patients that has been developed by Canadian researchers,” said Dr. Janet Dancey, director, NCIC Clinical Trials Group and professor at Queen’s University in Kingston.
“Our Government is committed to investing in research that will accelerate efforts to find a cure for cancer, a disease that kills thousands of Canadians each year. The clinical trial announced today represents an innovative approach to treating cancer. We are proud to have contributed to the development of this therapy and wish the researchers and clinicians every success as they carry out this important study,” said the Honourable Rona Ambrose, Canada’s Minister of Health.
In addition to The Ottawa Hospital, the clinical trial is also taking place at the Juravinski Cancer Centre of Hamilton Health Sciences (under the leadership of Dr. Sebastien Hotte), Princess Margaret Cancer Centre of the University Health Network in Toronto (under the leadership of Dr. Albiruni R A Razak) and the Vancouver Centre of the BC Cancer Agency (under the leadership of Dr. Daniel Renouf). The trial was approved by Health Canada, the Ontario Cancer Research Ethics Board and the BC Cancer Agency Research Ethics Board. Further details about the trial are available at clinicaltrials.gov. Patients wishing to participate in the trial should speak with their own oncologist and ask for a referral to one of the participating hospitals. Further details for patients at The Ottawa Hospital are available online.
While this trial is primarily funded by the Government of Ontario through the Ontario Institute for Cancer Research, many other funding organizations have also supported the research of Drs. Bell, Lichty and Stojdl, including The Ottawa Hospital Foundation, CHEO Foundation, Canadian Cancer Society, Terry Fox Research Institute, Canadian Institutes of Health Research, Ontario Ministry of Research and Innovation, Canada Foundation for Innovation, Ottawa Regional Cancer Foundation, Hair Donation Ottawa, Angels of Hope, BioCanRx, Pancreatic Cancer Canada, NAV Canada and several philanthropic donors.
Editors: Pictures of the scientific team members and graphics related to this media release are available for downloading at: http://bit.ly/cancer-viral-therapy