The document discusses the assembly and antitumor activity of lycium barbarum polysaccharide-platinum conjugates. Specifically, it investigates conjugating lycium barbarum polysaccharide (LBP) extracted from goji berries with 5-aminosalicylic acid (5-ASA) and platinum to form LBP-5-ASA-Pt conjugates. The cytotoxicity of the conjugates was tested on several cancer cell lines and a normal kidney cell line. Results showed the conjugates were cytotoxic to cancer cells, with LBP-5-ASA-Pt having the strongest effect. Further experiments showed the conjugates interacted with DNA and induced cell cycle arrest and apoptosis in cancer cells.