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Dr. Yannick Benoit of the Benoit Lab is looking forward to furthering his research with the addition of a new, cutting-edge machine that will assist in his investigation into cancer stem cells. [Photo © Danielle Edwards]

University of Ottawa lab takes aim at cancer stem cells

Dr. Yannick Benoît and his lab at the University of Ottawa have been awaiting the arrival of a spectral flow cytometry analyzer, cutting edge technology that could help him and his trainees contribute new information in cancer treatment research.

The Benoit Lab received a grant of more than $200,000 in March from the Canada Foundation for Innovation.

The money will go towards the $500,000 pricetag for the new technology. The remaining $300,000 will be covered the province and the private sector.

Benoît, 38, said that he believes the investment will go a long way in reaching his scientific goals.

His research project is attempting to identify stem cells in a tumour and create drugs to specifically target them. These cells are responsible for the growth of the cancer and its spread throughout the body.

The Benoit Lab is dedicated to research in several areas of the biomedical field — one of which is drug discovery and developing new anticancer agents that will specifically target colorectal cancer cells [Photo © Danielle Edwards]
Flow cytometry is a technique used to detect different characteristics of a cell using laser beam light [Illustration © Danielle Edwards]

“What we’re trying to do is to develop new molecules, new therapies that will target those very important cells for the disease, because the cancer stem cell seems to be escaping from the current standard therapeutics in the clinics,” said Benoît. “So they cause a problem because if we want to get rid of the disease, we absolutely need to get rid of the root.”

Current cancer treatments, like surgery and chemotherapy, are only somewhat effective in eradicating the disease. While surgery does get rid of the physical mass of a tumour, lingering cells can reactivate the cancer. And when it comes to chemotherapy, Benoît calls it “pure poison.”

With current technology, it’s difficult to pick out the cancer stem cells from other non-functional cells in a tumour. That’s where the analyzer comes in.

There’s no one genetic label for a cancer stem cell, said Benoît. Looking at more than 10 labels at a time is difficult, but this machine will be able to view up to 20 labels simultaneously to narrow the search for cells that are at the heart of tumours. Benoît also said that the analyzer will greatly increase the chances of finding cancer stem cells, which will help in creating treatments.

Cancer stem cells were originally discovered by Canadian researcher Dr. John Dick, the current Cancer Research Chair in stem cell biology and a professor at the University of Toronto. In 1997, he reported his observations of stem cells in tumours within certain types of leukemia. His research found tumours aren’t just made up of one type of cell and his findings would go create a new branch of cancer research. Benoît said that one in 52,000 tumour cells is also a cancer stem cell.

His primary focus over the course of his career has been colon cancer — the second most commonly diagnosed cancer in Canada, according to the Canadian Cancer Society. Colon cancer, also known as colorectal cancer, is the second leading cause of death for male cancer patients and the third for female cancer patients.

Colon cancer cells from a human patient [Photo @ Danielle Edwards]
Lab-grown cancer cells [Photo @ Danielle Edwards]

Benoît said his trainees have been instrumental in his ongoing work to improve cancer treatments.

One of them, Chris Bergin, has been working with Benoît since last December. Bergin, 24, is a PhD student in the university’s Cellular and Molecular Medicine program and he’s looking to see how current drugs affect the growth of cancer stem cells.

While a desire to contribute to future cancer research has been Bergin’s main motivation, he also likes being able to see the disease up close.

“Cancer is this big bad thing and it’s cool to be able to come into the lab and have cell lines growing of cancer,” he said. “It’s very cool to be able to just see it personally.”

Chris Bergin and the other trainees have just completed a workshop to learn about using the spectral flow cytometry analyzer and they’re excited to start the new leg of the research [Photo © Danielle Edwards]

He works alongside Angelique Masibag, 23, a master’s student at the university. Masibag has been at the Benoit Lab for a year and helps Bergin with his drug research, while also working on growing colon cancer cells for their experiments.

“It’s going pretty good so far [there’s] a lot of exciting data we’ve been getting” said Masibag of the research. She’s also been working on figuring out which protein on the surface of a cancer stem cell is essential to proliferation.

Benoît said that ultimately, finding new treatments that will attack only cancer stem cells and leave normal cells untouched to give patients a better quality of life has driven his work. And while there has been progress when it comes to finding new treatments, Benoît said that his research and the ongoing field of cancer research is general needs to continue growing.

“We are very happy to see those discoveries, but we don’t want to close the shop,” he said. “The more we have in our arsenal, the better the treatments.”

Comments: 1

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  1. This is a very inspiring story. We need young enthusiastic smart minds like you to help people fighting this terrible disease. Keep up with the good work. You have all my support!