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Compositions and methods for the therapy and diagnosis of breast cancer

a breast cancer and composition technology, applied in the field of cancer treatment and diagnosis, can solve the problems of difficult interpretation, no vaccine or other universally successful method for breast cancer prevention or treatment is currently available,

Inactive Publication Date: 2006-03-30
CORIXA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0026] The present invention further provides, in other aspects, fusion proteins that comprise at least one polypeptide as described above, as well as polynucleotides encoding such fusion proteins, typically in the form of pharmaceutical compositions, e.g., vaccine compositions, comprising a physiologically acceptable carrier and / or an immunostimulant. The fusions proteins may comprise multiple immunogenic polypeptides or portions / variants thereof, as described herein, and may further comprise one or more polypeptide segments for facilitating the expression, purification and / or immunogenicity of the polypeptide(s).

Problems solved by technology

No vaccine or other universally successful method for the prevention or treatment of breast cancer is currently available.
However, the use of established markers often leads to a result that is difficult to interpret, and the high mortality observed in breast cancer patients indicates that improvements are needed in the treatment, diagnosis and prevention of the disease.

Method used

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  • Compositions and methods for the therapy and diagnosis of breast cancer
  • Compositions and methods for the therapy and diagnosis of breast cancer

Examples

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example 1

Isolation and Characterization of breast Tumor Polypeptides

[0858] This Example describes the isolation of breast tumor polypeptides from a breast tumor cDNA library.

[0859] A cDNA subtraction library containing cDNA from breast tumor subtracted with normal breast cDNA was constructed as follows. Total RNA was extracted from primary tissues using Trizol reagent (Gibco BRL Life Technologies, Gaithersburg, Md.) as described by the manufacturer. The polyA+RNA was purified using an oligo(dT) cellulose column according to standard protocols. First strand cDNA was synthesized using the primer supplied in a Clontech PCR-Select cDNA Subtraction Kit (Clontech, Palo Alto, Calif.). The driver DNA consisted of cDNAs from two normal breast tissues with the tester cDNA being from three primary breast tumors. Double-stranded cDNA was synthesized for both tester and driver, and digested with a combination of endonucleases (MluI, MscI, PvuII, SalI and StuI) which recognize six base pairs DNA. This m...

example 2

Isolation and Characterization of Breast Tumor Polypeptides Obtained by PCR-Based Subtraction Using SCID-Passaged Tumor RNA

[0877] Human breast tumor antigens were obtained by PCR-based subtraction using SCID mouse passaged breast tumor RNA as follows. Human breast tumor was implanted in SCID mice and harvested on the first or sixth serial passage, as described in patent application Ser. No. 08 / 556,659 filed Nov. 13, 1995, U.S. Pat. No. 5,986,170. Genes found to be differentially expressed between early and late passage SCID tumor may be stage specific and therefore useful in therapeutic and diagnostic applications. Total RNA was prepared from snap frozen SCID passaged human breast tumor from both the first and sixth passage.

[0878] PCR-based subtraction was performed essentially as described above. In the first subtraction (referred to as T9), RNA from first passage tumor was subtracted from sixth passage tumor RNA to identify more aggressive, later passage-specific antigens. Of th...

example 3

Synthesis of Polypeptides

[0882] Polypeptides may be synthesized on an Perkin Elmer / Applied Biosystems Division 430A peptide synthesizer using FMOC chemistry with HPTU (O-Benzotriazole-N,N,N′,N′-tetramethyluronium hexafluorophosphate) activation. A Gly-Cys-Gly sequence may be attached to the amino terminus of the peptide to provide a method of conjugation, binding to an immobilized surface, or labeling of the peptide. Cleavage of the peptides from the solid support may be carried out using the following cleavage mixture: trifluoroacetic acid:ethanedithiol:thioanisole:water:phenol (40:1:2:2:3). After cleaving for 2 hours, the peptides may be precipitated in cold methyl-t-butyl-ether. The peptide pellets may then be dissolved in water containing 0.1% trifluoroacetic acid (TFA) and lyophilized prior to purification by C18 reverse phase HPLC. A gradient of 0%-60% acetonitrile (containing 0.1% TFA) in water (containing 0.1% TFA) may be used to elute the peptides. Following lyophilization...

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Abstract

Compositions and methods for the therapy and diagnosis of cancer, particularly breast cancer, are disclosed. Illustrative compositions comprise one or more breast tumor polypeptides, immunogenic portions thereof, polynucleotides that encode such polypeptides, antigen presenting cell that expresses such polypeptides, and T cells that are specific for cells expressing such polypeptides. The disclosed compositions are useful, for example, in the diagnosis, prevention and / or treatment of diseases, particularly breast cancer.

Description

TECHNICAL FIELD OF THE INVENTION [0001] The present invention relates generally to therapy and diagnosis of cancer, such as breast cancer. The invention is more specifically related to polypeptides, comprising at least a portion of a breast tumor protein, and to polynucleotides encoding such polypeptides. Such polypeptides and polynucleotides are useful in pharmaceutical compositions, e.g., vaccines, and other compositions for the diagnosis and treatment of breast cancer. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] Breast cancer is a significant health problem for women in the United States and throughout the world. Although advances have been made in detection and treatment of the disease, breast cancer remains the second leading cause of cancer-related deaths in women, affecting more than 180,000 women in the United States each year. For women in North America, the life-time odds of getting breast cancer are one in eight. [0004] 2. Description of the Relate...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K48/00C12Q1/68C07H21/04C07K14/82C07K16/30A61K35/12A61K38/00A61K39/00C07K14/47C12N9/00
CPCA61K35/12A61K38/00A61K39/00A61K2039/5154A61K2039/57C07K14/47G01N2500/00C07K16/3015C07K2319/00C12N9/00C12Q1/6886G01N33/57415C07K14/4748A61P35/00A61P37/00A61P37/04A61P43/00C07K2317/34C12Q2600/156C12Q2600/158
Inventor HOUGHTON, RAYMONDSLEATH, PAULPERSING, DAVID
Owner CORIXA CORP
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