Human kinase and polynucleotides encoding the same

Details Human kinase and polynucleotides encoding the same Human kinase and polynucleotides encoding the same

2001-12-11

2003-07-15

Monshipouri, M. (Department: 1652)

Chemistry: molecular biology and microbiology

Micro-organism, per se ; compositions thereof; proces of...

Bacteria or actinomycetales; media therefor

C435S006120, C435S252300, C435S320100, C435S194000, C536S023200

Reexamination Certificate

active

06593126

ABSTRACT:

1. INTRODUCTION
The present invention relates to the discovery, identification, and characterization of novel human polynucleotides encoding a protein that shares sequence similarity with animal kinases. The invention encompasses the described polynucleotides, host cell expression systems, the encoded proteins, fusion proteins, polypeptides and peptides, antibodies to the encoded proteins and peptides, and genetically engineered animals that either lack or overexpress the disclosed genes, antagonists and agonists of the proteins, and other compounds that modulate the expression or activity of the proteins encoded by the disclosed genes, which can be used for diagnosis, drug screening, clinical trial monitoring, the treatment of diseases and disorders, and cosmetic or nutriceutical applications.
2. BACKGROUND OF THE INVENTION
Kinases mediate phosphorylation of a wide variety of proteins and compounds in the cell. Along with phosphatases, kinases are involved in a range of regulatory pathways. Given their physiological importance, kinases have been subject to intense scrutiny and are proven drug targets.
3. SUMMARY OF THE INVENTION
The present invention relates to the discovery, identification, and characterization of nucleotides that encode a novel human protein, and the corresponding amino acid sequence of this protein. The novel human protein (NHP) described for the first time herein shares structural similarity with animal kinases, including, but not limited to, serine/threonine kinases, tyrosine kinases, TGF-beta activated kinases, and a variety of growth factor receptors. As such, the novel polynucleotides encode a new kinase protein having homologues and orthologs across a range of phyla and species.
The novel human polynucleotides described herein, encode an open reading frame (ORF) encoding a protein of 1036 amino acids in length (see SEQ ID NO: 2).
The invention also encompasses agonists and antagonists of the described NHPs, including small molecules, large molecules, mutant NHPs, or portions thereof, that compete with native NHP, peptides, and antibodies, as well as nucleotide sequences that can be used to inhibit the expression of the described NHPs (e.g., antisense and ribozyme molecules, and open reading frame or regulatory sequence replacement constructs) or to enhance the expression of the described NHPs (e.g., expression constructs that place the described polynucleotide under the control of a strong promoter system), and transgenic animals that express a NHP sequence, or “knock-outs” (which can be conditional) that do not express a functional NHP. Knock-out mice can be produced in several ways, one of which involves the use of mouse embryonic stem cells (“ES cells”) lines that contain gene trap mutations in a murine homolog of at least one of the described NHPs. When the unique NHP sequences described in SEQ ID NOS:1-3 are “knocked-out” they provide a method of identifying phenotypic expression of the particular gene as well as a method of assigning function to previously unknown genes. In addition, animals in which the unique NHP sequences described in SEQ ID NOS:1-3 are “knocked-out” provide a unique source in which to elicit antibodies to homologous and orthologous proteins that would have been previously viewed by the immune system as “self” and therefore would have failed to elicit significant antibody responses.
Additionally, the unique NHP sequences described in SEQ ID NOS:1-3 are useful for the identification of protein coding sequence and mapping a unique gene to a particular chromosome (the described NHP is apparently encoded on human chromosome 1, see GENBANK accession no. AL133380). These sequences identify actual, biologically verified, and therefore relevant, exon splice junctions as opposed to those that may have been bioinformatically predicted from genomic sequence alone. The sequences of the present invention are also useful as additional DNA markers for restriction fragment length polymorphism (RFLP) analysis, and in forensic biology.
Further, the present invention also relates to processes for identifying compounds that modulate, i.e., act as agonists or antagonists, of NHP expression and/or NHP activity that utilize purified preparations of the described NHPs and/or NHP product, or cells expressing the same. Such compounds can be used as therapeutic agents for the treatment of any of a wide variety of symptoms associated with biological disorders or imbalances.


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