Human secreted proteins and polynucleotides encoding the same

Details Human secreted proteins and polynucleotides encoding the same Human secreted proteins and polynucleotides encoding the same

2001-03-20

2004-11-09

Tate, Christopher R. (Department: 1654)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

C536S023200, C536S023100, C530S300000, C435S325000, C435S252300, C435S320100, C435S069100

Reexamination Certificate

active

06815538

ABSTRACT:

INTRODUCTION
The present invention relates to the discovery, identification, and characterization of novel human polynucleotides encoding proteins that share sequence similarity with animal secreted proteins such as, inter alia, semiphorins, protein/peptide hormones of the neurohypophysial and oxytocin (neurophysin 1 precursor) family. 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 over express the disclosed polynucleotides, antagonists and agonists of the proteins, and other compounds that modulate the expression or activity of the proteins encoded by the disclosed polynucleotides that can be used for diagnosis, drug screening, clinical trial monitoring, and treatment of diseases and disorders.
BACKGROUND OF THE INVENTION
Secreted proteins are biologically active molecules that have been implicated in a number of biological processes and anomalies such as hyperproliferative disorders, muscle contraction, vasoconstriction and dilation, immunity, development, modulating metabolism, and cancer. In particular, protein hormones have been implicated in, inter alia, autoimmunity, diabetes, osteoporosis, infectious disease, arthritis, and modulating physiological homeostasis, metabolism, and behavior. Examples of biologically active secreted proteins include, but are not limited to, semaphorins which have been implicated in, inter alia, mediating neural processes, cancer, and development. Along with their cognate receptors (i.e., neuropilins), semaphorins act to regulate the organization and fasciculation of nerves in the body.
SUMMARY OF THE INVENTION
The present invention relates to the discovery, identification, and characterization of nucleotides that encode novel human proteins, and the corresponding amino acid sequences of these proteins. The novel human proteins (NHPs) described for the first time herein share structural similarity with semaphorin proteins (SEQ ID NOS: 1-5), protein/peptide hormones of the neurohypophysial family (SEQ ID NOS:6-7) and protein/peptide hormones of the oxytocin (neurophysin 1 precursor) family (SEQ ID NOS:8-10).
The novel human nucleic acid sequences described herein, encode alternative proteins/open reading frames (ORFs) of 875, 782, 91 and 89 amino acids in length (see respectively SEQ ID NOS: 2, 4, 7, 9).
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 gene or regulatory sequence replacement constructs) or to enhance the expression of the described NHP polynucleotides (e.g., expression constructs that place the described polynucleotide under the control of a strong promoter system), and transgenic animals that express a NHP transgene, 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:1-10 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. Additionally, the unique NHP sequences described in SEQ ID NOS:1-10 are useful for the identification of coding sequence and the mapping a unique gene to a particular chromosome.
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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