MICROSPHERE DRUG CARRIER, PREPARATION METHOD, COMPOSITION AND USE THEREOF

摘要

A nanosphere or microsphere drug carrier, formulations comprising the drug carrier and the preparation method of the formulations and the use of the carrier are disclosed. The carrier comprises a biodegradable methoxy end-capped polyethylene glycol-polylactide block copolymersor a derivative thereof represented by formula (I) as the main carrier material: CH3O—[CH2—CH2—O]m—[C(O)—CH(CH3)—O]n—R (I).