摘要:
Methods of expressing LIM mineralization protein in mammalian cells are described. Methods of expressing LIM mineralization protein and assessing glycosylation of the LIM mineralization protein in prokaryotic and non-mammalian eukaryotic cells are also described. The methods involve transfecting the cells with an isolated nucleic acid comprising a nucleotide sequence encoding a LIM mineralization protein. Transfection may be accomplished in vitro, ex vivo or in vivo by direct injection of virus or naked DNA, or by a nonviral vector such as a plasmid.
摘要:
Described are osteogenic implants that include a first implant material covered at least in part by a second implant material carrying an osteogenic protein such as a bone morphogenic protein. The first implant material can comprise a mineral and provide an inner scaffolding portion for supporting bone ingrowth, and the second implant material can comprise a collagen or other sponge carrier covering the first implant material and having a liquid osteogenic protein formulation imbibed therein. Related implant materials and methods of preparation and use constitute additional aspects of the invention.
摘要:
A carrier matrix may be delivered to a target position within a patient in a minimally invasive manner by first cutting a collagen sponge sheet into a plurality of relatively small pieces. These pieces are sized so that, when wet, they are capable of flowing through a cannula and/or reduced-diameter syringe tip. The pieces are placed into a syringe and wetted, say with a morphogenic solution, and optionally mixed with a bulking material, which is similarly sized to fit through the cannula. The thoroughly mixed and wetted product forms a viscous aggregate which may then be injected into the patient at the target site.
摘要:
A carrier matrix may be delivered to a target position within a patient in a minimally invasive manner by first cutting a collagen sponge sheet into a plurality of relatively small pieces. These pieces are sized so that, when wet, they are capable of flowing through a cannula and/or reduced-diameter syringe tip. The pieces are placed into a syringe and wetted, say with a morphogenic solution, and optionally mixed with a bulking material, which is similarly sized to fit through the cannula. The thoroughly mixed and wetted product forms a viscous aggregate which may then be injected into the patient at the target site.
摘要:
The present invention is directed to isolated nucleic acid molecules that encode LIM mineralization protein, or LMP. The invention further provides vectors comprising nucleotide sequences that encode LMP, as well as host cells comprising those vectors. Moreover, the present invention relates to methods of inducing bone formation by transfecting osteogenic precursor cells with an isolated nucleic acid molecule comprising a nucleotide sequence encoding LIM mineralization protein. The transfection may occur ex vivo or in vivo by direct injection of virus or naked plasmid DNA. In a particular embodiment, the invention provides a method of fusing a spine by transfecting osteogenic precursor cells with an isolated nucleic acid molecule having a nucleotide sequence encoding LIM mineralization protein, admixing the transfected osteogenic precursor cells with a matrix and contacting the matrix with the spine. Finally, the invention relates to methods for inducing systemic bone formation by stable transfection of host cells with the vectors of the invention.
摘要:
A carrier matrix may be delivered to a target position within a patient in a minimally invasive manner by first cutting a collagen sponge sheet into a plurality of relatively small pieces. These pieces are sized so that, when wet, they are capable of flowing through a cannula and/or reduced-diameter syringe tip. The pieces are placed into a syringe and wetted, say with a morphogenic solution, and optionally mixed with a bulking material, which is similarly sized to fit through the cannula. The thoroughly mixed and wetted product forms a viscous aggregate which may then be injected into the patient at the target site.
摘要:
The instant application provides kits and methods for identifying agents which induce or inhibit the osteogenic effect of LMP or BMP proteins. The kits are directed to methods which measure either an amount of a complex between a Smurf protein or a fragment thereof and an LMP protein or a fragment thereof. Alternatively, the kits are directed to methods of measuring an amount of the ubiquitinated Smad protein or a fragment thereof.
摘要:
The present invention is directed to isolated nucleic acid molecules that encode LIM mineralization protein, or LMP. The invention further provides vectors comprising nucleotide sequences that encode LMP, as well as host cells comprising those vectors. Moreover, the present invention relates to methods of inducing bone formation by transfecting osteogenic precursor cells with an isolated nucleic acid molecule comprising a nucleotide sequence encoding LIM mineralization protein. The transfection may occur ex vivo or in vivo by direct injection of virus or naked plasmid DNA. In a particular embodiment, the invention provides a method of fusing a spine by transfecting osteogenic precursor cells with an isolated nucleic acid molecule having a nucleotide sequence encoding LIM mineralization protein, admixing the transfected a osteogenic precursor cells with a matrix and contacting the matrix with the spine. Finally, the invention relates to methods for inducing systemic bone formation by stable transfection of host cells with the vectors of the invention.