申请人:Yale University
公开号:US20220168230A1
公开(公告)日:2022-06-02
At least five classes of MNP-based compounds have been demonstrated to form supramolecular particles for effective delivery by injection or topically of different types of therapeutic, prophylactic, or diagnostic agents. These compounds are isolated from natural sources such as plants. Exemplary MNP-based compounds, from which synthetic analogs or derivatives are made and appreciated to function similarly, e.g., capable of forming supramolecular particles include diterpene resin acids (e.g., abietic acid and pimaric acid), phytosterols (e.g., stigmasterol and β-sitosterol), lupane-type pentacyclic triterpenes (e.g., lupeol and betulinic acid), oleanane-type pentacyclic tritepenes (e.g., glycyrrhetic acid and sumaresinolic acid), and lanostane-type triterpenes and derivatives (e.g., dehydrotrametenolic acid and poricoic acid A). In some cases the MNP-based compounds are therapeutically effective in the absence of added therapeutic, prophylactic or diagnostic agent. Betulinic acid (BA) NPs were capable of efficiently penetrating ischemic brains and effectively promoting functional recovery as antioxidant agents.