Abstract: The present invention relates to an orally-administered gene carrier and a use thereof, and more specifically, to: an oral gene carrier comprising, at the C-terminus of an immunoglobulin Fc region, a linker formed from cationic arginine and enabling the condensation of an anionic gene; and an oral composition for preventing, ameliorating or treating metabolic diseases, the composition comprising the gene carrier and the GLP-1 gene as active ingredients. The gene carrier, according to the present invention, may be usefully employed as an orally-administered carrier for various genes, and especially, is expected to be usable for preventing, ameliorating or treating metabolic diseases, such as diabetes and obesity, by effectively transferring the GLP-1 gene.

Abstract: The present invention relates to a nanoparticle for oral gene delivery, which is a novel oral gene delivery system capable of regulating blood glucose levels in biological systems and insulin secretion in response to ingested meals. More specifically, the present invention relates to a nanoparticle for gene delivery, comprising: an ionic polymer conjugated with bile acid or a bile acid derivative; and a gene; and to a pharmaceutical composition comprising the same.