Glycoconjugation processes and compositions

US9950054B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9950054-B2
Application numberUS-201615347034-A
CountryUS
Kind codeB2
Filing dateNov 9, 2016
Priority dateAug 16, 2012
Publication dateApr 24, 2018
Grant dateApr 24, 2018

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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Abstract

Official abstract text for this publication.

The invention provides eTEC linked glycoconjugates comprising a saccharide covalently conjugated to a carrier protein through a (2-((2-oxoethyl)thio)ethyl)carbamate (eTEC) spacer, immunogenic compositions comprising such glycoconjugates, and methods for the preparation and use of such glycoconjugates and immunogenic compositions.

First claim

Opening claim text (preview).

The invention claimed is: 1. A method of preventing, treating or ameliorating a bacterial infection, disease or condition in a subject, comprising administering to the subject an immunologically effective amount of an immunogenic glycoconjugate composition comprising a bacterial capsular polysaccharide conjugated to a carrier protein through a (2-((2-oxoethyl)thio)ethyl)carbamate (eTEC) spacer, wherein the polysaccharide is covalently linked to the eTEC spacer through a carbamate linkage, and wherein the carrier protein is covalently linked to the eTEC spacer through an amide linkage. 2. The method of claim 1 , wherein the bacterial capsular polysaccharide is derived from S. pneumoniae. 3. The method of claim 1 , wherein the infection, disease or condition is associated with S. pneumoniae bacteria. 4. The method of claim 2 , wherein the bacterial capsular polysaccharide is selected from the group consisting of Pn-serotype 1, 3, 4, 5, 6A, 6B, 7F, 8, 9V, 10A, 11A, 12F, 14, 15B, 18C, 19A, 19F, 22F, 23F and 33F capsular polysaccharides. 5. The method of claim 1 , wherein the bacterial capsular polysaccharide is derived from N. meningitidis. 6. The method of claim 1 , wherein the infection, disease or condition is associated with N. meningitidis bacteria. 7. The method of claim 5 , wherein the bacterial capsular polysaccharide is selected from the group consisting of Mn-serotype A, C, W135, and capsular polysaccharides. 8. The method of claim 1 , wherein the carrier protein is CRM 197 . 9. A method of inducing a protective immune response in a subject, comprising administering to the subject an immunologically effective amount of an immunogenic composition comprising a bacterial capsular polysaccharide conjugated to a carrier protein through a (2-((2-oxoethyl)thio)ethyl)carbamate (eTEC) spacer, wherein the polysaccharide is covalently linked to the eTEC spacer through a carbamate linkage, and wherein the carrier protein is covalently linked to the eTEC spacer through an amide linkage. 10. The method of claim 9 , wherein the bacterial capsular polysaccharide is derived from S. pneumoniae. 11. The method of claim 9 , wherein the infection, disease or condition is associated with S. pneumoniae bacteria. 12. The method of claim 10 , wherein the bacterial capsular polysaccharide is selected from the group consisting of Pn-serotype 1, 3, 4, 5, 6A, 6B, 7F, 8, 9V, 10A, 11A, 12F, 14, 15B, 18C, 19A, 19F, 22F, 23F and 33F capsular polysaccharides. 13. The method of claim 9 , wherein the bacterial capsular polysaccharide is derived from N. meningitidis. 14. The method of claim 9 , wherein the infection, disease or condition is associated with N. meningitidis bacteria. 15. The method of claim 13 , wherein the bacterial capsular polysaccharide is selected from the group consisting of Mn-serotype A, C, W135, and capsular polysaccharides. 16. The method of claim 9 , wherein the carrier protein is CRM 197 .

Assignees

Inventors

Classifications

  • Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics · CPC title

  • Antibacterial agents · CPC title

  • Immunostimulants · CPC title

  • A61K47/64Primary

    Drug-peptide, drug-protein or drug-polyamino acid conjugates, i.e. the modifying agent being a peptide, protein or polyamino acid which is covalently bonded or complexed to a therapeutically active agent (peptidic linkers A61K47/65) · CPC title

  • Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca · CPC title

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What does patent US9950054B2 cover?
The invention provides eTEC linked glycoconjugates comprising a saccharide covalently conjugated to a carrier protein through a (2-((2-oxoethyl)thio)ethyl)carbamate (eTEC) spacer, immunogenic compositions comprising such glycoconjugates, and methods for the preparation and use of such glycoconjugates and immunogenic compositions.
Who is the assignee on this patent?
Pfizer
What technology area does this patent fall under?
Primary CPC classification A61K47/64. Mapped technology areas include Human Necessities.
When was this patent published?
Publication date Tue Apr 24 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).