The invention generally concerns inhibition of a molecule that has a role in post-translational modification of a receptor for antiproliferative factor (APF) of bladder epithelial cells, thereby modulating the APF. In particular, inhibition of DHHC2 activity and/or ZDHHC2 expression results in modulation of APF receptor activity, and in specific aspects such modulation is therapeutic and/or preventative for a bladder condition, such as interstitial cystitis. In addition, inhibition of CKAP4 palmitoylation in certain cases also decreases its activity as a tPA receptor on smooth muscle cells or surfactant A on type II pneumocytes, and/or generally inhibits its function as a cell membrane receptor, cell chaperone molecule, and/or membrane trafficking agent.

Inhibition of palmitoyl acyl transferase expression and/or activity for the regulation of antiproliferative factor activity

An assay system designed to detect a protein biomarker in urine that is diagnostic for interstitial cystitis (IC). The presence of a 9 amino acid glycopeptide, antiproliferative factor (APF), in urine is unique to patients with IC. Urine samples from patients who exhibit symptoms consistent with IC are added to the assay system. Binding of APF to the cytoskeletal associated protein 4 (CKAP4) is positive for the presence of APF in urine and diagnostic for IC. The diagnostic system is a significant and surprising advance in diagnosis of IC and has commercial applications relevant to women and men who suffer from symptoms consistent with IC.

Cell-based detection of APF through its interaction with CKAP4 for diagnosis of interstitial cystitis

Derivatives of bladder epithelial antiproliferative factor and methods of using them are disclosed. In specific embodiments, the glycopeptide compositions are useful for the treatment and/or prevention of medical conditions, including cancer. In other embodiments, there are compositions and methods related to treatment of bladder conditions. In particular embodiments, the glycopeptide comprises D-pipecolic acid or L-pipecolic acid.

Derivatives of APF and methods of use

The purpose of the present invention is to identify a target molecule that is involved in Dkk1-induced hyperproliferation of tumor cells to provide a novel antitumor agent. CKAP4 specifically regulates the hyperproliferation effects that are induced by Dkk1, and proliferation of tumor cells can be suppressed by inhibiting expression or function of CKAP4 in the tumor cells.

CKAP4-molecular-targeted antitumor agent

Derivatives of apf and their use for treating cystitis

The present invention concerns the receptor for antiproliferative factor (APF) from bladder epithelial cells. In particular, there are compositions and methods for modulating APF, APF receptor, and/or the binding of APF to APF receptor. Agents that interfere with the binding of APF to its receptor or agents that enhance the binding of APF to its receptor are contemplated. In specific aspects, certain compositions are employed for a therapeutic purpose, such as interstitial cystitis or cancer, for example.

Cellular receptor for antiproliferative factor

A novel antiproliferative factor comprising a glycopeptide is disclosed. In specific embodiments, the novel antiproliferative factor is associated with the bladder. Compositions, diagnostic kits and reagents, and methods of using the compounds for identifying and/or treating interstitial cystitis and cancer are disclosed.

Antiproliferative factor and methods of use

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Cellular receptor for antiproliferative factor

Antiproliferative factor and methods of use