Design of polyrotaxanes as supramolecular conjugates for cells and tissues.
This research focuses on the supramolecular challenge of enhancing multivalent binding between ligands and proteins or biological receptors on cell surfaces. Our special interest is using supramolecular-structured polymers, namely, polyrotaxanes consisting of ligand-immobilized alpha-cyclodextrins (alpha-CDs) threaded onto a poly(ethylene glycol) (PEG) chain capped at both terminals with bulky end groups via biodegradable linkages. The structural characteristics of these polyrotaxanes involve sliding and rotational motion of the ligands immobilized on alpha-CDs along a PEG chain, thus facilitating access to binding sites on proteins. This approach provides a novel biomaterial design in the field of drug delivery and tissue engineering.
School of Materials Science, the 21st Century COE Program, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi, Ishikawa 923-1292, Japan. yui@jaist.ac.jp
Nobuhiko
N
Yui
Tooru
T
Ooya
D000818:Animals; D001665:Binding Sites; D001672:Biocompatible Materials / Q000138:chemical synthesis* / Q000737:chemistry; D001673:Biodegradation, Environmental; D002478:Cells, Cultured; D046508:Culture Techniques; D004337:Drug Carriers; D016503:Drug Delivery Systems; D006801:Humans; D008422:Materials Testing; D015394:Molecular Structure; D012106:Research; D043862:Rotaxanes / Q000737:chemistry / Q000494:pharmacology*; D012680:Sensitivity and Specificity; D012995:Solubility; D013329:Structure-Activity Relationship
D001672:Biocompatible Materials; D004337:Drug Carriers; D043862:Rotaxanes