Gene delivery compositions and methods
AssigneeThe Johns Hopkins University
InventorsJohn H. Lawrence, III, J. Kevin Donahue
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Abstract
The present provides methods and compositions that enable effective delivery of nucleic acids to desired cells, including to a solid organ such as a mammalian heart. The methods and compositions enable effective gene transfer and subsequent expression to a majority of cells throughout a solid organ such as the heart. Methods and compositions of the invention preferably provide enhanced vascular permeability that enables increased gene transfer to targeted cells, but without significant degradation or injury to endothelial cell layers. Global delivery of nucleic acid to an intact heart has been achieved with as little as 2 minutes of intracoronary exposure to the administered nucleic acid.
Claims66
A method for delivering nucleic acid to cells in a tissue of interest, comprising:
- contacting the tissue with an agent which increases vascular permeability to an exogenous nucleic acid;
- and
- administering to the tissue the exogenous nucleic acid under an effective amount of low calcium ion concentration of less than or equal to 500 micromolar, whereby transfer efficiency of the exogenous nucleic acid by the cells in the tissue is increased.
A method for delivering an exogenous nucleic acid to cells of a tissue of interest, comprising:
- contacting the tissue with a vascular permeability increasing agent under an effective amount of low calcium ion concentration of less than or equal to 500 micromolar to increase vascular permeability to an exogenous nucleic acid;
- and
- administering the exogenous nucleic acid to the tissue, whereby transfer efficiency of the exogenous nucleic acid to the cells of the tissue of interest is increased.
A method for delivering a nucleic acid to malignant cells in a tissue, comprising:
- treating the tissue with a vascular permeability increasing agent to increase delivery of an exogenous nucleic acid to the malignant cells in the tissue;
- and
- administering to the tissue the exogenous nucleic acid under an effective amount of low calcium ion concentration of less than or equal to 500 micromolar.
A method of providing to a recipient subject donor cells that comprise nucleic acid exogenous to the cells, comprising:
- contacting a tissue comprising the donor cells with an agent that increases vascular permeability to increase transfer efficiency of an exogenous nucleic acid to the donor cells;
- administering to the tissue comprising the donor cells nucleic acid under an effective amount of low calcium ion concentration of less than or equal to 500 micromolar;
- and
- introducing the donor cells into the recipient subject to express a gene product encoded by the nucleic acid.
A pharmaceutical kit comprising:
- a permeability agent that can increase vascular permeability to a nucleic acid in a subject;
- a solution having a calcium ion concentration of from about 40 μmol/L to about 500 μmol/L;
- and
- a nucleic acid for administration to a subject.
A treatment solution which has a calcium ion concentration of from about 40 μmol/L to about 500 μmol/L, comprising:
- a) a permeability agent that can increases vascular permeability to a nucleic acid;
- and
- b) a nucleic acid.
A treatment solution comprising a nucleic acid in a fluid carrier and having a calcium ion concentration of from about 40 μmol/L to about 500 μmol/L.
A method for delivering nucleic acid to cells in tissue of interest, comprising administering to the cells an exogenous nucleic acid under an effective amount of low calcium ion concentration of about 500 μmol/L or less.
Dependencies are inferred from the claim text.