Our Research & Development platform
From target identification to product validation and beyond
Delivering first-in-class immunotherapies of activation and regulation
OSE Immunotherapeutics’ R&D is focused on developing innovative immunotherapies for immune activation and regulation in the fields of immuno-oncology and autoimmune diseases.
Stemming from unparalleled experience in clinical immunology applied to transplant, OSE’s research benefits from a fully translational platform historically intertwined with academic centers with expertise in immunotherapy (INSERM, Center for Research in Transplantation and Immunology, University Hospital of Nantes, etc).
Leveraging these collaborations, OSE’s team has acquired unique expertise and knowledge focused on novel target discovery to generate innovative agonists or antagonists of the immune response, combined with several scientific and technological platforms: neoepitopes, myeloid checkpoint inhibitors, monoclonal antibodies.
We have already delivered multiple first-in-class products that activate or regulate the immune system. The originality and potential of these products have been recognized through a wide network of international collaborations with top international pharma, clinical and academic partners, notably in Europe and in the US.
Our Research & Development in Immuno-Oncology
Tumor cells are usually recognized and destroyed through a complex mechanism of immune surveillance involving different immune cells (antigen presenting cells, macrophages, lymphocytes…), proteins and mediators (interleukins, growth factors…).
Tumor cells can escape this surveillance mechanism by blocking immune cells’ activation. They can, for example, express specific antigens that are also expressed by normal cells thus avoiding being recognized, or block immune cell activation checkpoints neutralizing the immune response.
OSE Immunotherapeutics’ R&D team focuses its efforts
on the key aspects of the immune response
T-cell activation with Tedopi®, a patented combination of 10 optimized neo-epitopes selected from 5 tumor-associated antigens expressed in various cancers.
Tedopi® activates a cytotoxic T-cell response able to destroy cancer cells they recognize and restores the immune surveillance of cancer cells in HLA-A2 positive responder patients.
Tedopi®, the company’s most advanced clinical program, is currently in a Phase 3 study in non-small cell lung cancer (NSCLC) after immune checkpoint inhibitor failure, and in Phase 2 status in pancreatic cancer.
Immune activation of the tumor microenvironment (TME) with OSE-172, the company’s first-in-class myeloid checkpoint inhibitor selectively targeting the SIRPα receptor expressed on myeloid pro-tumor suppressive cells.
OSE-172 blocks SIRPα (signal regulatory protein alpha), a receptor strongly expressed by myeloid and macrophage suppressor cells, on the strategic SIRPα / CD47 pathway. It restores effector functions of these suppressor cells, an activity which promotes immunosurveillance.
OSE-172 may also be combined with other immunotherapies, in particular with checkpoint inhibitors acting on T-lymphocytes, e.g. checkpoint inhibitors targeting the PD-1/PD-L1 axis or products triggering a stimulation of the immune system.
OSE-172 is developed in multiple cancer indications under a license and collaboration agreement with Boehringer Ingelheim.
OSE Immunotherapeutics is also exploring additional new cytotoxic antibodies that target myeloid cell and macrophage receptors.
Targeting specific immune receptors with OSE-703, a cytotoxic monoclonal antibody targeting the alpha-chain of the receptor for interleukin-7 (IL-7R), cytotoxic for human cells expressing CD127 and aberrantly expressed on tumor cells.
OSE-703 is in a research collaboration with the Memorial Sloan Kettering Cancer Center (New York) to be explored in solid tumors with NSCLC as the primary cancer model.
Our Research & Development in Autoimmune Diseases
Mirroring cancer, autoimmune diseases are characterized by an abnormal immune reaction against normal cells.
Rheumatoid arthritis, Crohn’s disease, psoriasis and Sjögren syndrome are examples of the 80 different diseases that have been associated to autoimmune dysfunction.
Autoimmune dysfunction happens through a deregulation of the immune response or of immune cell maturation. As a result, immune cells target normal cells instead of disease cells, generating pathological situations that can profoundly affect the daily life of patients.
OSE Immunotherapeutics is developing promising products focusing on different receptors
The CD28-receptor that controls both T-cell activation and regulatory T-cell downregulation. This receptor is believed to be at the heart of several autoimmune diseases including rheumatoid arthritis. FR104, a CD28-antagonist, demonstrated during its Phase 1 clinical trial both good clinical safety and immunosuppressive activity.
FR104 is in Phase 2 status in rheumatoid arthritis.
The IL-7 receptor is another key element of autoimmune diseases. IL-7 is a cytokine that controls the proliferation, apoptosis and activation of CD4 and CD8 effector T-cells in humans. With OSE-127, OSE’s R&D team is developing an antagonist of the IL-7 receptor present on T-cells, the CD127 receptor, thus downregulating immune activity.
OSE-127 is being developed in ulcerative colitis under a license option agreement with Servier.