Biofluid-Triggered Burst Release from an Adaptive Covalently Assembled Dipeptide Nanocontainer for Emergency Treatment.
The construction of quickly dissociating containers holding bioactive components that meet the extreme requirements of emergency treatment is highly desirable but remains a great challenge. Here the use of small-molecule-induced dynamic covalent assembly is reported for simple and tunable fabrication of a biocompatible diphenylalanine-based nanocontainer toward rapidly responsive cargo delivery. The assembled nanocontainer can adaptively encapsulate various charged or neutral molecules. Upon biofluid trigger, the encapsulated molecules and bioactive proteins are released in a burst (within 5 s) from the nanocontainer due to highly sensitive deprotonation-mediated disruption of hydrogen bonding. This highlighted feature allows the nanocontainer as an excellent "fast dissolving" delivery vehicle available in spray dosage form for medical emergencies, as demonstrated by in vivo application for massive hemorrhage.
Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Jinbo
J
Fei
Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.|School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
He
H
Zhang
National Center for Nanoscience and Technology, Beijing, 100190, China.
Anhe
A
Wang
Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.|School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
Chenchen
C
Qin
Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.|School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
Huimin
H
Xue
Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.|School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
Junbai
J
Li
D000818:Animals; D004151:Dipeptides / Q000737:chemistry / Q000494:pharmacology; D016503:Drug Delivery Systems / Q000379:methods*; D004632:Emergency Medical Services / Q000379:methods; D005260:Female; D006470:Hemorrhage / Q000188:drug therapy*; D051381:Rats; D017207:Rats, Sprague-Dawley
D004151:Dipeptides
burst release; emergency treatment; peptide; stimuli-responsive; supramolecular assembly