IP Library › Granted Patent US 12,359,175
Granted Patent B2
US 12,359,175 · App. 17/544,518 · Granted Jul 15, 2025

Viral nanoparticle multimers

Inventors: Nicole F. Steinmetz (Cleveland, OH); Amy M. Wen (Cleveland, OH)
Assignee: CASE WESTERN RESERVE UNIVERSITY
C12N7/00C07K14/005B82Y5/00C12N2770/32023C12N2770/32051C12N2770/32142C12N2810/856
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Quick Facts
Patent No.
US 12,359,175
App. No.
17/544,518
Granted
Jul 15, 2025
Kind
B2
Abstract

Virus particle multimers and methods of making and using such virus particle multimer are described. Virus particle multimers are constructed by preparing a plurality of asymmetrically functionalized virus particles bearing one or more functional groups and contacting the asymmetrically functionalized virus particles with a first linker molecule that reacts with the functional groups to form a virus particle multimer that includes a plurality of asymmetrically functionalized virus particles connected by the linker molecule. The asymmetrically functionalized virus particles are typically prepared by attaching the virus particles to a support surface to allow asymmetrical functionalization to be introduced.

Claims (19)

1. A plant virus particle multimer, the plant virus particle multimer produced by preparing a plurality of asymmetrically functionalized plant virus particles bearing one or more functional groups that are disposed asymmetrically and contacting the asymmetrically functionalized plant virus particles with a first linker molecule that reacts with the functional groups to form a plant virus particle multimer comprising a plurality of asymmetrically functionalized plant virus particles connected by the linker molecule, wherein the one or more asymmetrically disposed functional groups inhibit additional cluster formation and aggregation of the plant virus particles, wherein the plurality of asymmetrically functionalized plant virus particles are prepared by a method comprising the step of attaching a plurality of plant virus particles to a support surface to allow for asymmetrical functionalization of the plant virus particles and releasing the asymmetrically functionalized plant virus particles from the support surface to provide a plurality of unbound asymmetrically functionalized plant virus particles, and wherein the step of preparing a plurality of asymmetrically functionalized plant virus particles is performed at about physiological pH.

2. The plant virus particle multimer of claim 1 , wherein the plant virus particles included in the multimer are icosahedral plant virus particles.

3. The plant virus particle multimer of claim 1 , wherein the multimer is a dimer.

4. The plant virus particle multimer of claim 3 , wherein the multimer is a heterodimer comprising a first and a second asymmetrically functionalized plant virus, wherein the first asymmetrically functionalized plant virus includes a targeting molecule bound to the surface and the second asymmetrically functionalized plant virus includes an imaging agent bound to the surface.

5. The plant virus particle multimer of claim 3 , wherein the multimer is a homodimer comprising a first and a second asymmetrically functionalized plant virus, wherein both the first asymmetrically functionalized plant virus and the second asymmetrically functionalized plant virus include a targeting molecule and an imaging agent bound to the surface.

6. The plant virus particle multimer of claim 1 , wherein the plant virus particle multimer further comprises an imaging agent.

7. The plant virus particle multimer of claim 1 , wherein the plant virus particle multimer further comprises an antitumor agent.

8. The plant virus particle multimer of claim 1 , wherein the plant virus particles included in the multimer are cow pea mosaic virus (CMPV) particles.

9. A method of delivering a cargo molecule to a cell, comprising contacting the cell with a plant virus particle multimer loaded with the cargo molecule, the plant virus particle multimer produced by preparing a plurality of asymmetrically functionalized virus particles bearing one or more functional groups that are disposed asymmetrically and contacting the asymmetrically functionalized plant virus particles with a first linker molecule that reacts with the functional groups to form a plant virus particle multimer comprising a plurality of asymmetrically functionalized plant virus particles connected by the linker molecule, wherein the one or more asymmetrically disposed functional groups inhibit additional cluster formation and aggregation of the plant virus particles, wherein the plurality of asymmetrically functionalized plant virus particles are prepared by a method comprising the step of attaching a plurality of plant virus particles to a support surface to allow for asymmetrical functionalization of the plant virus particles and releasing the asymmetrically functionalized plant virus particles from the support surface to provide a plurality of unbound asymmetrically functionalized plant virus particles, and wherein the step of preparing a plurality of asymmetrically functionalized plant virus particles is performed at about physiological pH.

10. The method of claim 9 , wherein the multimer is a dimer.

11. The method of claim 10 , wherein the multimer is a heterodimer comprising a first and a second asymmetrically functionalized plant virus, wherein the first asymmetrically functionalized plant virus includes a targeting molecule bound to the surface and the second asymmetrically functionalized plant virus includes an imaging agent bound to the surface.

12. The method of claim 10 , wherein the multimer is a homodimer comprising a first and a second asymmetrically functionalized plant virus, wherein both the first asymmetrically functionalized plant virus and the second asymmetrically functionalized plant virus include a targeting molecule and an imaging agent bound to the surface.

13. The method of claim 9 , wherein the cell is a cancer cell.

14. The method of claim 9 , wherein the cargo molecule is an imaging agent.

15. The method of claim 9 , wherein the cargo molecule is an antitumor agent.

16. The method of claim 9 , wherein the cell is in vivo.

17. The method of claim 9 , wherein the plant virus particle multimer further comprises a cell penetrating peptide and/or a targeting molecule bound to the surface of the plant virus particle multimer.

18. The method of claim 9 , wherein the plant virus particle multimer is provided as part of a pharmaceutical composition.

19. The method of claim 9 , wherein the plant virus particles included in the multimer are cow pea mosaic virus (CMPV) particles.

Continuity (3)
Continuation 14761444
Provisional Application 61753558 · Jan 17, 2013
Related Publication 20220090026A1 · Mar 24, 2022
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