Glucose-Responsive Exendin-4 Delivery Device for T2D Holds Promise
The researchers found that the dual mineralized particle-based system can specifically release exendin-4 while immobilizing glucose oxidase.
HealthDay News — A smart exendin-4 (Ex4) delivery device is a promising therapeutic option for type 2 diabetes that can provide safe, long-term, and on-demand Ex4 therapy, according to a study published online in Nature Communications.
Noting that delivery of therapeutic peptides for diabetes therapy is compromised by short half-lives of drugs, Wei Chen, PhD, from Sun Yat-sen University Cancer Center in Guangzhou, China, and colleagues examined the role of a smart Ex4 delivery device based on microneedle (MN)-array patches integrated with dual mineralized particles that separately contain Ex4 and glucose oxidase (GOx) for diabetes therapy.
The researchers found that as a result of the differential response to the microenvironment induced by biological stimuli, the dual mineralized particle-based system can specifically release Ex4 while immobilizing GOx. Thereby the system allows glucose-responsive and closed-loop release to significantly improve the therapeutic performance of Ex4.
The mechanical strength of alginate-based MN can be enhanced by integration of mineralized particles by crosslinking to facilitate skin penetration, supporting transdermal administration that is painless and noninvasive.
"We believe this smart glucose-responsive Ex4 delivery holds great promise for type 2 diabetes therapy by providing safe, long-term, and on-demand Ex4 therapy," the authors write.
Chen W, Tian R, Xu C, et al. Microneedle-array patches loaded with dual mineralized protein/peptide particles for type 2 diabetes therapy. Nat Commun. 2017; 8(1):1777.