Cellectis Publishes Creation of “Smart CAR T-Cells” for Potentially Safer, More Effective Treatments for Cancer in Nature Communications

Regulatory News:

Cellectis (Paris:ALCLS) (NASDAQ:CLLS) (Euronext Growth: ALCLS; Nasdaq: CLLS), a biopharmaceutical company focused on developing immunotherapies based on gene-edited allogeneic CAR T-cells (UCART), announced today a paper published in Nature Communications that describes a proof-of-concept for rewiring the cell pathway to create highly intelligent T-cells that can recognize cancerous tumors and cause a micro secretion of therapeutic proteins onto these tumors, which ultimately reshapes the tumor microenvironment and improves the T-cells ability to fight cancer. By utilizing gene editing techniques to rewire the TCRα, CD25 and PD1 genes, the study enabled CAR T-cells to micro secrete the pro-inflammatory cytokine, IL-12, in a tumor and time-dependent manner, paving the way for a next generation of tightly controlled, highly active and potentially safer CAR T-cell treatments.

“Discussion around the tumor microenvironment has become a popular topic in the CAR T-cell space, and with recent advancements in gene editing technologies, especially TALEN, it is now possible to manipulate the way a T-cell regulates itself to adapt to its environment,” said Dr. Philippe Duchateau, Ph.D., Chief Scientific Officer, Cellectis. “With seamless modification of multiple genes, and subsequently rewiring their natural regulatory processes, this approach causes the T-cells to secrete therapeutic proteins of interest in a tightly controlled and localized manner. We have essentially transformed the current T-cells used today into precise and powerful micro-robots that can spray IL-12 specifically onto cancer cells – potentially avoiding the toxicity of a systemic injection of IL-12, while enhancing CAR-T activity.”

“Our extensive knowledge in TALEN-based gene editing and DNA donor template design enabled us to develop this groundbreaking proof-of-concept, a milestone that paves the way to the next generation of CAR T-cells,” added Dr. Julien Valton, Ph.D., Innovation Team Leader, Cellectis. “These highly intelligent CAR T-cells can sense and remodel their microenvironment in a tailored, highly regulated, and antigen-specific manner, allowing us to have more control over increasingly potent treatments and less risk of general secretion into healthy tissues. This engineering strategy could bring smarter, safer and more effective treatments to the forefront for patients in need.”