A Canadian startup revolutionizes the cryopreservation of cells and tissues
By Alexandria Daum
Everyone knows that freezing things is an imperfect process. Take frozen food, for example – most have experienced those frozen ice crystals that change the texture and taste of their favourite meal. The medical field experiences a similar problem when freezing cells (stem cells) and tissues, except the result is cellular death and decreased functionality.
But a new Canadian startup called PanTHERA CryoSolutions will soon offer a revolutionary product for the cryopreservation, or freezing, of cells and tissues, ultimately resulting in a longer shelf life for cellular therapies and superior products.
“Cryopreservation is a common strategy, but the technology that was developed to do it is 70 to 80 years old,” explains Dr. Robert Ben (University of Ottawa), who co-founded PanTHERA CryoSolutions with Dr. Jason Acker (Canadian Blood Services/University of Alberta). “With current technology, when you freeze something, you get a large amount of cell death that occurs, so you don’t recover all those cells. In addition, we’re actually adversely affecting the functional capacity of those cells.”
The process that causes the majority of this cellular damage and death is called ice recrystallization. PanTHERA CryoSolutions has discovered a small molecule inhibitor that prevents ice recrystallization – something that none of the current cryoprotectants available on the market can do – making it a unique technology.
“Our technology uses small molecular structures that have the ability to inhibit the ice recrystallization process,” explains Ben. “They actually prevent that damage from occurring, so when we thaw that product, it’s a superior product and it’s also functional.”
The proof of concept for this technology was established with a GlycoNet project that looked at hematopoietic stem cells.
“The results have clearly indicated that this ice recrystallization inhibitor technology really works and makes a superior product where we get faster engraftment and increased incidence of engraftment, which is exactly what you want in a clinical setting,” Ben says.
PanTHERA CryoSolutions aims to have a product commercially available within a year for a specific therapy, but Ben sees the potential to apply this technology to many areas, including cellular therapies, regenerative medicine, and 3-D bioprinting applications.
“We’ve seen tremendous medical advances in the last 10 years or so, but in many of these areas there’s no real shelf life to the products, because it’s been observed that you can’t effectively freeze them. It’s truly a bottleneck is this area, and so the only way to move forward is to have a better cryopreservation strategy,” he says.
“The time is right to fix this problem, and imagine how that’s going to change the landscape. It has the potential to have a large impact, which is really exciting for us – to be able to take a technology that starts out in an academic laboratory and then translate that out,” he adds.