Embodiments of the invention include linking agents including photo groups and vinyl groups and coatings and devices that incorporate such linking agents, along with related methods. Exemplary methods herein include methods of priming substrates and methods of coating substrates using compounds having the formula R
1
—X—R
2
, wherein R
1
is a radical comprising a vinyl group, X is a radical comprising from about one to about twenty carbon atoms, and R
2
is a radical comprising a photoreactive group. Embodiments herein also include linking agents having the formula R
1
—X—R
2
, wherein R
1
is a radical comprising a vinyl group, X is a radical comprising from about one to about twenty carbon atoms, and R
2
is a radical comprising a photoreactive group. Other embodiments are also included herein.
Polypeptide microparticles having sustained release characteristics, methods and uses
申请人:Slager Joram
公开号:US20090022805A1
公开(公告)日:2009-01-22
The invention provides polypeptide microparticles having control release features, particular methods for the preparation of such microparticles, and drug delivery systems that include polypeptide microparticles.
Tissue graft materials containing biocompatible agent and methods of making and using same
申请人:Stucke Sean M.
公开号:US20080063627A1
公开(公告)日:2008-03-13
The invention provides implantable tissue graft materials composed of a collagenous tissue scaffold and a biocompatible agent bonded to the tissue scaffold via an activated photoreactive group. The invention further provides methods including steps of obtaining a tissue graft material comprising a collagenous tissue scaffold; contacting the collagenous tissue scaffold with a biocompatible agent composition that includes biocompatible agent and one or more photoreactive groups; and treating the collagenous tissue scaffold and biocompatible agent composition to activate the photoreactive groups and bond the biocompatible agent to the tissue scaffold via one or more activated photoreactive groups. Implantable prostheses formed of the tissue graft material are also contemplated.
DELIVERY OF NUCLEIC ACID COMPLEXES FROM MATERIALS INCLUDING NEGATIVELY CHARGED GROUPS
申请人:McGonigle Joseph Schmidt
公开号:US20090263449A1
公开(公告)日:2009-10-22
Embodiments of the invention include devices and methods for the controlled elution of nucleic acid delivery complexes. In an embodiment, the invention includes a medical device including a substrate surface, a polymeric coating disposed on the surface, the polymeric coating coupled to the substrate surface through the reaction product of a photoreactive group; the polymeric coating comprising negatively charged species on the surface; and a plurality of nucleic acid delivery complexes disposed on the polymeric coating, the nucleic acid delivery complexes comprising a nucleic acid and a cationic carrier agent complexed to the nucleic acid. Other embodiments are included herein.
A photoactivatable nucleic acid derivative composition in which one or more photoreactive group(s) are bound to a natural or synthetic nucleic acid. The photoreactive groups can be bound to the nucleic acid before, during or after its formation, and can thereafter be activated in order to attach the nucleic acid to another molecule, e.g., to the surface of a solid support. Also described is a method of preparing such a composition, and a method of using such a composition to attach the nucleic acid to a another molecule, such as that provided by the surface of a substrate used to prepare a nucleic acid chip by photolithographic techniques.