Abstract:
The present invention relates to a method for producing dextran polymer-based amplified nucleic acid aptamer nanoconstructs which efficiently and selectively capture a specific target molecule, the method comprising linking a short nucleic acid sequence or a complementary sequence for formation of nanoconstructs and a nucleic acid aptamer sequence for capture of the specific target molecule to a dextran polymer by a chemical reaction, mixing the resulting polymer/nucleic acid substances with each other to form nanostructures, subjecting the nanostructures to rolling circle amplification, thereby forming a nucleic acid aptamer having a repeated structure. The dextran polymer-based amplified nucleic acid aptamer nanoconstructs have the effect of efficiently and selectively capturing a specific target molecule.
Abstract:
The present invention relates to a highly efficient aptamer complex comprising a branched DNA and an aptamer, and a pharmaceutical use thereof. More specifically, the aptamer complex of the present invention relates to a highly efficient aptamer complex including a Y-shaped DNA as the branched DNA and using vascular endothelial growth factor (VEGF) as a target molecule. The aptamer complex of the present invention and a pharmaceutical composition comprising the same as an active ingredient are expected to be widely used in the medical field since the binding efficiency with the target molecule is more remarkable than that of the conventional aptamer.
Abstract:
Provided is a gene delivery including a polymer network formed by binding phenylboronic acid, sugar, and a low-molecular weight branched polymer. The gene delivery may be stably maintained in vivo and efficiently deliver a gene specifically to cancer cells, such that the gene delivery system may be usefully used as a gene delivery system for chemotherapy.
Abstract:
The invention relates to a nitric oxide-responsive acrylamide-based polymer, and more particularly, to an acrylamide-based polymer that is produced using an acrylamide-based monomer and a nitric oxide-sensitive crosslinking agent and allows prevention or treatment of a disease or illness caused by overexpression of nitric oxide.
Abstract:
The present invention relates to a polymeric gel comprising crosslink points, which are dissociated in response to nitrogen monoxide, and to a method for preparing a hydrogel, the method comprising the steps of: a) polymerizing a mixture of monomers comprising a monofunctional hydrophilic monomer and a monomer comprising a plurality of functional groups comprising an o-phenylenediamine residue; and b) separating a hydrogel formed by the polymerization.
Abstract:
A nanoporous membrane according to the present invention includes a support member and a polymer layer disposed on the support member and including a plurality of nano pores each having an inner wall formed of a block-structured polymer material of which the end thereof is substituted by a functional group.
Abstract:
Provided is a method of controlling release of nitric oxide, and more particularly, to a method of selectively releasing nitric oxide depending on a change in pH using calcium phosphate.The method of selectively releasing nitric oxide according to the present invention may stably deliver nitric oxide to a desired site, and induce release of nitric oxide by a change in pH, thereby making it possible to improve a therapeutic effect while preventing a loss of nitric oxide.
Abstract:
A method of coating surfaces of various body-implantable materials with control-releasable nitrogen monoxide using a catecholamine, more particularly, technology of preparing a coating film containing a diazeniumdiolate functional group on a surface of a material to be coated using a catecholamine, is provided. The coating film prepared by the method has advantages in that nitrogen monoxide can be stably supplied under an in vivo environment, and can be suitably used in a living body without causing cytotoxicity. Therefore, among the materials having a coating film formed on a surface thereof, the body-implantable material is especially expected to be widely used for medical and health applications including treatment of ischemic disorders such as arteriosclerosis through controlled release of nitrogen monoxide, regulation of penile erections, antibacterial and antiviral effects, and wound healing.