The German Federal Ministry of Education and Research (BMBF) has granted €1.2 million ($1.35 million) to support a project seeking to characterize the function of the protein TRPM4, a potential therapeutic target to prevent nerve cell injury associated with multiple sclerosis (MS), and to develop new drug candidates for the disease.
The project is being conducted by investigators at the University Medical Center Hamburg-Eppendorf (UKE) in collaboration with colleagues at the Fraunhofer Institute for Molecular Biology and Applied Ecology IME.
TRPM4, which stands for transient receptor potential melastatin 4, is a protein that works as a channel, opening and closing at specific times to allow ions (electrically charged small molecules) to flow in and out of cells.
Its role in the context of MS was first described by Manuel Friese, MD, head of the Institute of Neuroimmunology and Multiple Sclerosis (INIMS) at the UKE. The research revealed that in MS, TRPM4 is overly active in nerve cells due to inflammatory processes, eventually playing a role in nerve cell damage.
Therefore, it is possible that by blocking the activity of TRPM4, the extent of nerve cell damage leading up to progressive disability in MS can be reduced. This is the main rationale of the collaborative project that is now being carried out at the UKE and the Fraunhofer IME ScreeningPort.
First, investigators will focus on learning more about the molecular properties of TRPM4, their potential therapeutic target, and then assess if some of its existing drug candidates can reduce nerve cell damage in different animal models of disease.
In a prior study, the approved diabetes treatment glyburide demonstrated promising efficacy. By blocking the TRPM4 channel activity, the medicine significantly eased symptoms and preserved motor neurons in animal models of MS.
They are anticipating this approach will enable newly developed drug candidates to enter clinical testing at a later stage.
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