Abstract: Disclosed are methods of gene delivery using capsid-modified recombinant adeno-associated viral (rAAV) particles. Exemplary methods are provided employing rAAV particles that have altered affinity for heparin or heparin sulfate. Also provided by the disclosure are methods employing the rAAV vector-based compositions, virus particles, host cells, and pharmaceutical formulations in the expression of selected therapeutic genes, proteins, polypeptides, peptides, antisense oligonucleotides, and/or ribozymes in selected mammals, including organs, tissues, and human host cells.