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Abstract

The present invention relates to a pharmaceutical composition for preventing or treating degenerative brain diseases by using glucagon-like peptide-1 (GLP-1) and an interleukin-1 receptor antagonist (IL-1Ra). A composition comprising a fusion protein including GLP-1 and IL-1Ra, according to the present invention, exhibits the effects of inhibiting the production of amyloid beta, which is known as a material causing Alzheimer's disease, and improving memory and cognitive function. In addition, it has been identified that when a bispecific antibody comprising GLP-1 and an anti-IL-1 antibody or a fusion protein in which IL-1Ra and Fc are linked is administered, amyloid beta plaque deposition in the brain is decreased and a neurogenesis promotion effect is exhibited in Alzheimer's disease model mice. Moreover, it has been identified that when GLP-1 and IL-1Ra are also co-administered, amyloid beta plaque deposition in the brain is decreased in Alzheimer's disease model mice. Therefore, the composition comprising GLP-1 and IL-1R, according to the present invention, can be effectively used in the prevention or treatment of degenerative brain diseases, such as Alzheimer's disease, Parkinson's disease and Huntington's disease, and the alleviation of cognitive impairment.

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First Claim