摘要:
Described are nucleic acids encoding a polypeptide for delivery of a nanoparticle to the cytosol, the peptide comprising: (a) a nanoparticle association domain, (b) a spacer domain, (c) an uptake domain, and (d) a vesicle escape domain, wherein the domains (a) through (d) appear in the same order as listed above, and wherein the peptide, upon addition of a non-hydrolyzable lipophilic moiety to the vesicle escape domain and binding to a nanoparticle, is effective to induce uptake of a nanoparticle by a cell and delivery of the nanoparticle to the cytosol of the cell. Also described are methods of delivery of a nanoparticle to the cytosol of a cell, the method comprising providing to a cell a nanoparticle attached to such a peptide. Exemplary nanoparticles include quantum dots.
摘要:
Described are peptides for delivery of a nanoparticle to the cytosol, the peptide comprising: (a) a nanoparticle association domain; (b) a proline-rich spacer domain; (c) an uptake domain; and (d) a vesicle escape domain comprising a non-hydrolyzable lipid moiety, wherein the spacer domain is between the nanoparticle association domain and the uptake and vesicle escape domains, and wherein the peptide, when attached to an extracellular nanoparticle, is effective to induce uptake of the nanoparticle by a cell and delivery of the nanoparticle to the cytosol of the cell. Also described are methods of delivery of a nanoparticle to the cytosol of a cell, the method comprising providing to a cell a nanoparticle attached to such a peptide. Exemplary nanoparticles include quantum dots.
摘要:
A peptide directs nanoparticles (such as quantum dots) to the plasma membrane of mammalian cells. A method of delivery of a nanoparticle to a plasma membrane of a cell includes providing to the cell a nanoparticle attached to a peptide configured to direct the nanoparticle the plasma membrane, and allowing the cell to take up the nanoparticle. The nanoparticle can be a FRET donor to an organic dye.
摘要:
Described are nucleic acids encoding a polypeptide for delivery of a nanoparticle to the cytosol, the peptide comprising: (a) a nanoparticle association domain, (b) a spacer domain, (c) an uptake domain, and (d) a vesicle escape domain, wherein the domains (a) through (d) appear in the same order as listed above, and wherein the peptide, upon addition of a non-hydrolyzable lipophilic moiety to the vesicle escape domain and binding to a nanoparticle, is effective to induce uptake of a nanoparticle by a cell and delivery of the nanoparticle to the cytosol of the cell. Also described are methods of delivery of a nanoparticle to the cytosol of a cell, the method comprising providing to a cell a nanoparticle attached to such a peptide. Exemplary nanoparticles include quantum dots.
摘要:
A peptide directs nanoparticles (such as quantum dots) to the plasma membrane of mammalian cells. A method of delivery of a nanoparticle to a plasma membrane of a cell includes providing to the cell a nanoparticle attached to a peptide configured to direct the nanoparticle the plasma membrane, and allowing the cell to take up the nanoparticle. The nanoparticle can be a FRET donor to an organic dye.
摘要:
Described are peptides for delivery of a nanoparticle to the cytosol, the peptide comprising: (a) a nanoparticle association domain; (b) a proline-rich spacer domain; (c) an uptake domain; and (d) a vesicle escape domain comprising a non-hydrolyzable lipid moiety, wherein the spacer domain is between the nanoparticle association domain and the uptake and vesicle escape domains, and wherein the peptide, when attached to an extracellular nanoparticle, is effective to induce uptake of the nanoparticle by a cell and delivery of the nanoparticle to the cytosol of the cell. Also described are methods of delivery of a nanoparticle to the cytosol of a cell, the method comprising providing to a cell a nanoparticle attached to such a peptide. Exemplary nanoparticles include quantum dots.