Poly(lactic-co-glycolide) (PLGA) microspheres have been investigated for a long time as a protein/peptide delivery depot, and some products were already commercialized. However, recent publications have report about their disadvantages in the long term delivery of protein/peptide drugs such as the denaturation, aggregation, and deamidation of protein/peptide drug. The phenomena are induced by proton generated from the hydrolysis of ester linkages in PLGA. It is well known that an acidic condition facilitates the denaturation, aggregation, and deamidation. Therefore, the development of new protein/peptide delivery depot is necessary. In this study, pullulan acetate microsphere (PAM) was inspected as a depot for long term delivery of exendin-4 which is a drug for type II diabetes. It was prepared by w/o/w double emulsion method. The mean particle size of PAM ranged from 5 to 100 mm, as determined by SEM. Their shapes were regular and spherical, as visualized via SEM photographs. The exendin-4 loading efficiency of the microspheres was up to 90 wt. %. The microspheres may give an idea for development of new protein/peptide depot in long term delivery.
저자
Hyun-Jung Yang [ The department of biotechnology ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동