Investigation of molecular mechanisms for common diseases caused by aging and oxidative stress and development of drug candidates aiming the molecular targets

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In this project we aim to investigate the molecular mechanisms for adipocytokine production from adipocytes and clearance of β-amyloid peptide in microglia, which apply to develop drug candidates aiming the molecular targets. During the passed three years, we have obtained several novel findings and drug candidates as follows. (1)Production of some adipocytokines including resistin increased by stimulation of ox-LDL via translation modulated mechanism. (2)We found a novel clearance mechanism of oligomeric β-amyloid peptides, which is induced selectively in type-2 microglia by IL-4 stimulation. (3)The clearance mechanism was proved to induce in vivo using transgenic AD model mice. We also found that some compounds of low molecular weight are able to induce the clearance mechanism. (4)We are succeeded in generating specific monoclonal antibodies to discriminate type-1 and type-2 microglia (Patent is applied.)All the results described above are more than we expected, and they are very promising to create new drugs for recovering from Alzheimer's disease, in particular.