The P2X7 receptor: a new therapeutic target in Alzheimer’s disease

ABSTRACTIntroduction: Alzheimer’s disease (AD) is a neurodegenerative illness with genetic risk as an etiological factor in a subset of cases. In AD with autosomal dominant inheritance, the extracellular β-amyloid (Aβ) aggregates and intracellular neurofibrillary tangles which consist of hyperphosphorylated tau, appear to be involved in the neuronal damage; however, other forms of AD may have a polygenetic causality. Microglial cells orchestrate pathophysiological events responsible for neuronal damage in AD. They surround Aβ aggregates and the stimulation of microglial P2X7 receptors (P2X7Rs) by high local concentrations of ATP which originates from damaged CNS cells, results in degeneration of nearby neurons.Areas covered: We discuss the pathogenesis of Alzheimer’s disease, the role of P2X7 receptors and their potential as therapeutic targets. We also address the fundamental hurdles in the development of new therapeutic strategies for Alzheimer’s disease.Expert opinion: There are many difficulties assoc...