摘要:
A polymer composition is provided, which contains a polymer or copolymer having a mercapto group at one end and functional group or ligand at the other end and also having a polyethylene glycol segment. Such a composition can form a biosensor surface of reduced non-specific adsorbability for proteins and the like.
摘要:
Parenchymal cells are cultivated on cultivated endothelial cells or cultivated fibroblasts which have been separated by a surface of a specific hydrophilic polymer, and which have been patterned. A culture which contains thus formed patterned spheroids of cultivated parenchymal cells is thereby provided by this invention. This culture maintains a function which is specific to the parenchymal cells over a long period of time.
摘要:
Modified polymers containing a poly(2-hydroxyethyl(meth)acrylate) chain as the hydrophilic polymer segment in which a hydrophobic polymer chain or a lipid residue of a sterol is bound to either end of the poly(2-hydroxyethyl(meth)acrylate) chain through a covalent bond or in which the poly(2-hydroxyethyl(meth)acrylate) chain is grafted onto the backbone chain at either end thereof. These modified polymers are excellent in compatibility with liquid or a living body, thus being advantageously usable particularly in medical fields.
摘要:
This invention provides a heterotelechelic oligomer or polymer which is represented by the following formula: wherein A denotes a sugar residue, L denotes a linkage group represented by the following formula or (̵CH 2 )̵ 4
wherein R 1 and R 2 independently denote lower alkyl, aralkyl or aryl, X denotes a single bond or -CH 2 CH 2 -, Z denotes a group forming an unsaturated ester or ether, or a functional group such as halogen which binds to -CH 2 CH 2 -, n denotes an integer of 5 - 10,000, and m denotes an integer of 0 or 2 - 10,000.
This invention also provides a process to produce the above oligomer or polymer, and further a high molecular-micelle with use of a polyethylene oxide-polyester block polymer which has a sugar residue at its terminal. Said oligomer or polymer is expected to exhibit excellent bioavailability, and is also expected to be utilized in the field such as carriers for drug delivery or diagnostic reagents.
摘要:
This invention provides a heterotelechelic oligomer or polymer which is represented by formula below:
wherein R 1 and R 2 form an acetal, or, combined with each other, denote oxy (= O),
p, m, n and q each denote a certain integer, L is a group which forms an ester, and Z denotes a certain functional group.
This invention also provides a process to produce the above oligomer or polymer by means of living polymeri-zation. Since this oligomer or polymer forms a high- molecular micelle which is stable in an aqueous solvent, said oligomer or polymer will be useful as a carrier for drug delivery.
摘要:
The present invention provides a block polymer which has functional groups on its both ends, and which comprises hydrophilic/hydrophobic segments. As for the functional groups on its both ends, the block polymer has amino group, carboxyl group or mercapto group on α-terminal, and hydroxyl group, carboxyl group, aldehyde group or vinyl group on ω-terminal. Hydrophilic segment comprises polyethylene oxide, while hydrophobic segment is derived from lactide, lactone or (meth)acrylic acid ester. The block polymer of this invention forms a polymeric micelle which is usable as bio-compatible materials.