Abstract: Provided is a cross-linked polysaccharide gel composition used in cosmetics and medicine fields, and more particularly, to a hyaluronic acid gel composition having durability capable of maintaining durability for a long time within a living body without increasing a cross-linked bond rate by including a material having functions of decomposition inhibition and antioxidation of polysaccharide in cross-linked polysaccharide gel. In addition, the composition is a hydro gel complex in which ursolic acid is contained in non-cross-linked or cross-linked polysaccharides.

Abstract: The present invention relates to a radiation inducible promoter, more particularly to a radiation inducible promoter including a base sequence represented by SEQ ID NO: 3 derived from Salmonella typhimurium, an expression vector including the promoter, a transformant including the expression vector, and a method for inhibiting and treating cancer using the transformant. Because the radiation inducible promoter of the present invention may control the amount of a target protein produced by radiation, problems such as cytotoxicity caused by overproduction of an anticancer agent in the cancer cell may be solved and the anticancer agent may be used as an effective treatment simultaneously with a radiation therapy due to production of the agent in a cancer cell.