Fox Chase Cancer Center

Joanne Estojak

Erica A Golemis

Susan F Law

Vladimir Khazak

An isolated nucleic acid molecule is provided which encodes a mammalian signal mediator protein involved in regulation of cellular morphological alterations. The encoded protein comprises an amino-terminal SH3 domain, an Internal domain containing several SH2 binding motifs, and a carboxy-terminal effector domain that can induce pseudohyphal budding in yeast. The invention also provides the novel signal mediator protein, and antibodies thereto. These biological molecules are useful as research tools and as diagnostic and therapeutic agents for the identification, detection and regulation of complex signaling events leading to morphological, potentially neoplastic, cellular changes.

Signal mediator protein that induces cellular morphological alterations

An isolated nucleic acid molecule is provided which encodes a mammalian signal mediator protein involved in regulation of cellular morphological alterations. The encoded protein comprises an amino-terminal SH3 domain, an internal domain containing several SH2 binding motifs, and a carboxy-terminal effector domain that can induce pseudohyphal budding in yeast. The invention also provides the novel signal mediator protein, and antibodies thereto. These biological molecules are useful as research tools and as diagnostic and therapeutic agents for the identification, detection and regulation of complex signaling events leading to morphological, potentially neoplastic, cellular changes.

Antibodies immunologically specific for a signal mediator protein that

An isolated nucleic acid is provided, which encodes a stress-responsive subunit of mammalian RNA polymerase II, RPB4. In a preferred embodiment, the human RPB4 subunit (hsRPB4) is provided. Also provided are oligonucleotides that specifically hybridize with the nucleic acid, the purified polypeptide encoded by the nucleic acid and antibodies immunologically specific for the polypeptide. These biological molecules are useful as markers of stress-related responses, which may correspond to the occurrence of malignant disease, and as therapeutic agents to modify resistance of a selected cell population to external stress conditions, such as that resulting from treatment of a patient with chemotherapeutic agents.

Growing community of inventors

Jenkintown, PA, United States of America

Joanne Estojak