Human Streptococcus pneumoniae antibodies and uses therefor

Patent metadata

Field	Value
Publication number	US-12352749-B2
Application number	US-202218066582-A
Country	US
Kind code	B2
Filing date	Dec 15, 2022
Priority date	Feb 1, 2012
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

The present invention is directed to particular monoclonal antibodies and fragments thereof that find use in the detection, prevention and treatment of Streptococcus pneumoniae infections. In particular, these antibodies may kill Streptococcus pneumoniae or limit the replication of Streptococcus pneumoniae. Also disclosed are improved methods for producing such monoclonal antibodies.

First claim

What is claimed is:

1. A panel comprising two or more serotype-specific antibodies or binding fragments thereof that bind to Streptococcus pneumoniae or bind to antigens of S. pneumoniae immobilized on a solid support, wherein the two or more serotype-specific antibodies or binding fragments thereof comprise:
a heavy chain variable domain polypeptide selected from the group consisting of the amino acid sequence set forth in SEQ ID NOS: 253 to 257, 269, 294 to 304, 331 to 337, 351 to 354, or 360 to 364; and
a light chain variable domain polypeptide selected from the group consisting of the amino acid sequence set forth SEQ ID NOS: 286, 313 to 323, 344 to 350, 365 to 368, or 374 to 378.

2. The panel of claim 1 , wherein the solid support comprises one or more beads, a dipstick, a filter, a membrane, a plate, a chip, or a column matrix, and wherein the one or more serotype-specific antibodies immobilized on the solid support are specific for a serotype of S. pneumoniae or an antigen of S. pneumoniae.

3. The panel of claim 1 , wherein the one or more serotype-specific antibodies are monoclonal antibodies.

4. The panel of claim 1 , wherein the one or more serotype-specific antibodies bind to at least 18 S. pneumoniae serotypes.

5. The panel of claim 1 , wherein the one or more serotype-specific antibodies that bind to serotypes selected from at least one of:
1, 2, 3, 4, 5, 6B, 8, 9N, 9V, 11B, 14, 15B, 17F, 18C, 19A, 19F, 20, 22F, 23F, 33F, and CWPS cross react with more than one serotype;
1, 2, 3, 4, 5, 6B, 8, 9N, 9V, 11B, 14, 15B, 17F, 18C, 19A, 19F, 20, 22F, 23F, 33F, and CWPS; or
3, 6A, 6B, 6C, 19A, 19F, 22A, and 22F.

6. The panel of claim 1 , wherein the serotype-specific antibodies are linked to a detectable label.

7. The panel of claim 6 , wherein the detectable label comprises a radioactive tag, a fluorescent tag, or a biological or enzymatic tag.

8. A kit for the detection of Streptococcus pneumoniae comprising a panel comprising one or more serotype-specific antibodies or binding fragments thereof that bind to Streptococcus pneumoniae or bind to antigens of S. pneumoniae immobilized on a solid support, a suitable container, and optionally an immunodetection reagent, wherein the antibodies or binding fragments thereof comprise:
a heavy chain variable domain polypeptide selected from the group consisting of the amino acid sequence set forth in SEQ ID NOS: 253 to 257, 269, 294 to 304, 331 to 337, 351 to 354, or 360 to 364; and
a light chain variable domain polypeptide selected from the group consisting of the amino acid sequence set forth SEQ ID NOS: 286, 313 to 323, 344 to 350, 365 to 368, or 374 to 378,
wherein the panel includes antibodies or binding fragments thereof selected to bind to S. pneumoniae serotypes 1, 2, 3, 4, 5, 6B, 8, 9N, 9V, 11B, 14, 15B, 17F, 18C, 19A, 19F, 20, 22F, 23F, 33F, and CWPS.

9. The kit of claim 8 , wherein the support comprises one or more beads, a dipstick, a filter, a membrane, a plate, a chip, or a column matrix, and wherein the one or more serotype-specific antibodies immobilized on the support are specific for a serotype of S. pneumoniae or an antigen of S. pneumoniae.

10. The kit of claim 8 , wherein immunodetection reagent comprises at least a second antibody that binds an immunocomplex formed when an antibody in the antibody panel binds S. pneumoniae or S. pneumoniae antigen.

11. The kit of claim 10 , wherein the one or more serotype-specific antibodies and/or the immunodetection reagent are linked to a detectable label.

12. The kit of claim 11 , wherein the detectable label comprises a radioactive tag, a fluorescent tag, or a biological or enzymatic tag.

13. The kit of claim 8 , wherein the kit further comprises an aliquoted composition of S. pneumoniae or S. pneumoniae antigens that may be used to prepare a standard curve.

Assignees

• Oklahoma Med Res Found

Inventors

• Smith Kenneth

Classifications

• G01N2469/10

  Detection of antigens from microorganism in sample from host · CPC title

• G01N2333/3156

  from Streptococcus pneumoniae [Pneumococcus] · CPC title

• C07K2317/31

  multispecific · CPC title

• C07K2317/92

  Affinity (KD), association rate (Ka), dissociation rate (Kd) or EC50 value · CPC title

• C07K2317/33

  Crossreactivity, e.g. for species or epitope, or lack of said crossreactivity · CPC title