摘要:
The present invention relates to compositions and methods for the selection and use of surface exposed epitopes. The present invention includes in vivo and in vitro phage peptide diplay methods for the identification and selection of peptides and peptide associated factors with desired properties (e.g., targeting specificity, stability, etc.). The present invention further provides methods and compositions for the isolation and identification of peptide-specific antibodies. The present invention also includes methods and compositions employing nuclear localization signals for enhanced nuclear transport and expression of DNA.
摘要:
Disclosed is a process for transfecting genetic material into a mammalian cell to alter endogenous properties of the cell. The process comprises designing a polynucleotide for transfection. Then the polynucleotide is inserted into a mammalian vessel such as a tail vein or artery. Prior to insertion, subsequent to insertion, or concurrent with insertion the permeability of the vessel is increased thereby the genetic material is delivered to the parenchymal cell altering endogenous properties of the cell.
摘要:
We describe a process for generating multilayer particles comprising condensing a polymer with an oppositely charged polymer to form a particle and sequentially adding oppositely charged polymers to the particle forming at least three layers of polymers. The process is used to form a composition for delivering a biologically active compound to a cell.
摘要:
A method of forming polymers in the presence of nucleic acid using template polymerization. Also, a method of having the polymerization occur in heterophase systems. These methods can be used for the delivery of nucleic acids, for condensing the nucleic acid, for forming nucleic acid binding polymers, for forming supramolecular complexes containing nucleic acid and polymer, and for forming an interpolyelectrolyte complex.
摘要:
Chelator containing compounds are utilized in the delivery of molecules, polymers, nucleic acids and genes to animal cells. At least one chelator such as crown ether is attached to a polymer and then associated with another polymer such as DNA. An ion is then added to the mixture thereby forming condensed DNA. In condensed form and in complex with the chelator, DNA can be delivered to a cell.
摘要:
Disclosed is a complex for providing nucleic acid expression in a cell. A polynucleotide and a polymer are mixed together to form the complex wherein the zeta potential of the complex is not positive. Then the complex is delivered to the cell wherein the nucleic acid is expressed.
摘要:
A method of forming polymers in the presence of nucleic acid using template polymerization. Also, a method of having the polymerization occur in heterophase systems. These methods can be used for the delivery of nucleic acids, for condensing the nucleic acid, for forming nucleic acid binding polymers, for forming supramolecular complexes containing nucleic acid and polymer, and for forming an interpolyelectrolyte complex.
摘要:
The present invention is directed compositions for delivery of RNA interference (RNAi) polynucleotides to cells in vivo. The compositions comprise amphipathic membrane active polyamines reversibly modified with enzyme cleavable dipeptide-amidobenzyl-carbonate masking agents. Modification masks membrane activity of the polymer while reversibility provides physiological responsiveness. The reversibly modified polyamines (dynamic polyconjugate or DPC) are further covalently linked to an RNAi polynucleotide or co-administered with a targeted RNAi polynucleotide-targeting molecule conjugate.
摘要:
An polyampholyte is utilized in a condensed polynucleotide complex for purposes of nucleic acid delivery to a cell. The complex can be formed with an appropriate amount of positive and/or negative charge such that the resulting complex can be delivered to the extravascular space and may be further delivered to a cell.