An immunogenic glycan compound has a poly--1,4-ManNAc repeating-unit structure variably modified with 6-linked phosphoethanolamine and 6-linked phosphoglycerol.

A method of characterizing the protein O-GlcNAcylation site-specificity of an antibody. A method of detecting or quantifying the expression of site-specific O-GlcNAcylated proteins expressed in cells and biological samples. A method of diagnosing cancer in a host based on the cellular expression of site-specific O-GlcNAcylated proteins. A method of screening anti-cancer compounds according to their ability to increase a level O-GlcNAcylation of oncogene or tumor suppressor proteins. Methods of treating cancer in an animal host by administering compounds that increase a level of O-GlcNAcylated c-myc or p53 in cancer cells. A method of distinguishing subclasses of pancreatic cancer according to the sensitivity of pancreatic cancer cells to an imidazole derivative, and a method of personalized pancreatic cancer treatment delivered according to the sensitivity subclasses.

Provided herein are methods for detecting a cerebrospinal fluid-specific (CSF-specific) glycoform of Apolipoprotein E (APOE) in a subject.

IgG epitope and applications thereof as a target are provided. The IgG epitope is the C.sub.H1 domain of non-B cell-derived IgG, and there is N-glycosylated sialic acid modification at the Asn162 site of the domain. The realization of its antigen functions must depend on the sialylation of the site. The present invention further discloses the applications of the IgG epitope as a drug target in preparing drugs for diagnosis and/or treatment of epithelial tumors. In addition, our studies showed that this antigen depends on the sialylation of Asn162 site as a drug target, and the sialylation of this site must depend on sialyltransferase ST3GAL4, indicating that the enzyme can be used as a drug target for preparing tumor therapeutic drugs. Further, integrin 4 is co-expressed and co-localized with IgG containing the epitope. IgG can be used as a marker for preparing drugs for the auxiliary detection of epithelial tumors.

Provided are: an Fc-binding protein having improved stability, particularly to heat and acid; a method for producing the protein; an antibody adsorbent using the protein; and a method for separating the antibodies using the adsorbent. Specifically provided are: an Fc-binding protein having improved stability to heat and acid, achieved by substituting an amino-acid residue in a specific position in the extracellular region of human FcyRIIIa with another specific amino acid; a method for producing the protein; an antibody adsorbent using the protein; and a method for separating the antibodies using the adsorbent.

The present invention provides antibodies or the antigen-binding portion thereof, that bind to one or more carbohydrate antigens. Also disclosed herein are pharmaceutical pharmaceutical compositions and methods for the inhibition of cancer cells in a subject in need thereof. The pharmaceutical compositions comprise an antibody or an antigen-binding portion thereof and at least one pharmaceutically acceptable carrier.

Disclosed are methods for treating a cancer and/or enhancing immune responses to infiltration of tumors comprising administering to a subject a fucose. Also disclosed herein are methods of detecting the presence of a sugar-modified protein (i.e., a glycosylated protein).

The present invention broadly provides different compositions, kits, vectors, and methods including monoclonal antibodies directed to epitopes found within lipoarabinomannan (LAM) and phosphatidyl-myo-inositol mannoside 6 (PIM6) for the diagnosis and treatment of Mycobacterium tuberculosis infections.

The present invention relates to a method for detecting fucosylated alpha1-acid glycoprotein (AGP) in a sample, comprising the steps providing a monovalent fucose-binding peptide having at least 80% identity, such as 85, 90, 95, 99 or 100% identity, to a peptide having an amino acid according to SEQ ID NO: 1, immobilised on a solid phase; bringing the sample into contact with the immobilised fucose-binding peptide; and detecting any fucosylated AGP bound to said fucose-binding peptide. The invention further relates to a method for assessing a risk that a human individual suffers from hepatocellular carcinoma, and to a kit of parts and antibodies useful in the methods according to the invention, and to a peptide useful as an immunizing antigen in production of such antibodies.

In alternative embodiments, the invention provides vaccines, pharmaceutical compounds and formulations for diagnosing, preventing, treating or ameliorating Group A Streptococcus (GAS), Group C Streptococcus (GCS), or Group A Streptococcus (GGS), infections, or other pathogenic Streptococcus infections. In alternative embodiments, the invention provides compositions such as diagnostic tests, assays, immunoassays and test strips, and methods, for detecting or diagnosing the presence of a Streptococcal infection, e.g., Group A Streptococcus (GAS), Group C Streptococcus (GCS), or Group A Streptococcus (GGS), infections, or other pathogenic Streptococcus infections.