Granted Patent
B2
US 12,186,333 · App. 18/333,591 · Granted Jan 7, 2025
Delivery of RNA to trigger multiple immune pathways
Inventors:
Andrew Geall (Littleton, MA); Katrin Ramsauer (Vienna, AT); Gillis Otten (Rowley, MA); Christian Walter Mandl (Lexington, MA)
Assignee:
GlaxoSmithKline Biologicals SA
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Abstract
RNA encoding an immunogen is co-delivered to non-immune cells as the site of delivery and also to immune cells which infiltrate the site of delivery. The responses of these two cell types to the same delivered RNA lead to two different effects, which interact to produce a strong immune response against the immunogen. The non-immune cells translate the RNA and express the immunogen. Infiltrating immune cells respond to the RNA by expressing type I interferons and pro-inflammatory cytokines which produce a local adjuvant effect which acts on the immunogen-expressing non-immune cells to upregulate major histocompatibility complex expression, thereby increasing presentation of the translated protein to T cells. The effects on the immune and non-immune cells can be achieved by a single delivery of a single RNA e.g., by a single injection.
Claims (9)
1. A method of raising an immune response in a vertebrate, the method comprising administering to the vertebrate a composition comprising liposomes and an immunogen-encoding ribonucleic acid (RNA) such that the immunogen-encoding RNA: (i) stimulates an endosomal innate immunity receptor in the vertebrate; (ii) stimulates a cytoplasmic innate immunity receptor in the vertebrate; and (iii) is translated in the vertebrate to provide expression of the immunogen; the liposomes encapsulating at least half of the immunogen-encoding RNA; and at least 80% by number of the liposomes having diameters from 20 nm to 220 nm.
2. The method of claim 1 , wherein the composition is administered to skeletal muscle tissue.
3. The method of claim 1 , wherein the composition is administered by injection.
4. The method of claim 3 , wherein the injection is by a needle.
5. The method of claim 1 , wherein the endosomal innate immunity receptor is toll-like receptor 7 (TLR7).
6. The method of claim 1 , wherein the cytoplasmic innate immunity receptor is a RNA helicase.
7. The method of claim 1 , wherein the immunogen-encoding RNA is a self-replicating RNA.
8. The method of claim 1 , wherein the immunogen is a virus immunogen.
9. The method of claim 8 , wherein the virus immunogen is respiratory syncytial virus glycoprotein F.
Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Aug 11, 2023
From: GEALL, ANDREW; RAMSAUER, KATRIN; OTTEN, GILLIS; MANDL, CHRISTIAN
To: NOVARTIS VACCINES AND DIAGNOSTICS, INC.
Reel/Frame 064559/0214 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Aug 11, 2023
From: NOVARTIS VACCINES AND DIAGNOSTICS, INC.
To: NOVARTIS AG
Reel/Frame 064559/0251 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Aug 11, 2023
From: NOVARTIS AG
To: GLAXOSMITHKLINE BIOLOGICALS SA
Reel/Frame 064559/0313 →
Continuity (7)
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