▎ 摘　　要

NOVELTY - Composition comprises nanogel and vehicle, where the nanogel comprises a graphene-like nanosheet and a polysaccharide, the graphene-like nanosheet comprises a carbonization product of at least a portion of the polysaccharide, and the graphene-like nanosheet is complexed with the polysaccharide to form a cross-linked supramolecular structure. USE - The composition is useful for treating tumor disease or neoplastic disorder, where the subject is a mammal. Test details are described but no results given. ADVANTAGE - The composition is safe. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: treating tumor disease or neoplastic disorder in a subject, comprising administering compositions comprising a nanogel to the subject; and preventing or treating metastasis in a subject, comprising administering composition to the subject.