# US 10,308,704 B2 · Isolated nucleic acid molecules encoding stabilized receptor polypeptides and uses thereof

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- Number: US 10,308,704 B2
- Document ID: US10308704B2
- Status: Granted
- Kind: B2
- Application number: 15/004,375
- Filed: 2016-01-22
- Published: 2016-05-19
- Granted: 2019-06-04
- Earliest claimed: 2008-11-26
- Assignees: Amgen Inc.
- Applicants: Amgen Inc.
- Inventors: Jeonghoon Sun; Lei-Ting Tony Tam; Mark Leo Michaels; Thomas Charles Boone; Rohini Deshpande; Yue-Sheng Li; Huiquan Han
- Web page: https://patentgrep.com/patent/US10308704B2

## CPC

- C07K 14/71: for growth factors; for growth regulators
- A61P 3/00: Drugs for disorders of the metabolism (of the blood or the extracellular fluid A61P7/00)
- A61P 3/04: Anorexiants; Antiobesity agents
- A61P 3/10: for hyperglycaemia, e.g. antidiabetics
- A61P 5/26: Androgens
- A61P 7/00: Drugs for disorders of the blood or the extracellular fluid
- A61P 9/04: Inotropic agents, i.e. stimulants of cardiac contraction; Drugs for heart failure
- A61P 9/10: for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
- A61P 11/00: Drugs for disorders of the respiratory system
- A61P 11/08: Bronchodilators
- A61P 13/02: of urine or of the urinary tract, e.g. urine acidifiers
- A61P 13/12: of the kidneys
- A61P 15/00: Drugs for genital or sexual disorders (for disorders of sex hormones A61P5/24); Contraceptives
- A61P 17/02: for treating wounds, ulcers, burns, scars, keloids, or the like
- A61P 19/00: Drugs for skeletal disorders
- A61P 19/02: for joint disorders, e.g. arthritis, arthrosis
- A61P 19/08: for bone diseases, e.g. rachitism, Paget's disease
- A61P 21/00: Drugs for disorders of the muscular or neuromuscular system
- A61P 21/02: Muscle relaxants, e.g. for tetanus or cramps
- A61P 21/04: for myasthenia gravis
- A61P 25/28: for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
- A61P 29/00: Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
- A61P 31/18: for HIV
- A61P 35/00: Antineoplastic agents
- A61P 43/00: Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
- C07K 14/495: Transforming growth factor [TGF]
- A61K 38/00: Medicinal preparations containing peptides (peptides containing beta-lactam rings A61K31/00; cyclic dipeptides not having in their molecule any other peptide link than those which form their ring, e.g. piperazine-2,5-diones, A61K31/00; ergot alkaloids of the cyclic peptide type A61K31/48; containing macromolecular compounds having statistically distributed amino acid units A61K31/74; medicinal preparations containing antigens or antibodies A61K39/00; medicinal preparations characterised by the non-active ingredients, e.g. peptides as drug carriers, A61K47/00)
- C07K: PEPTIDES (peptides in foodstuffs A23; obtaining protein compositions for foodstuffs, working-up proteins for foodstuffs A23J; preparations for medicinal purposes A61K; peptides containing beta-lactam rings C07D; cyclic dipeptides not having in their molecule any other peptide link than those which form their ring, e.g. piperazine-2,5-diones, C07D; ergot alkaloids of the cyclic peptide type C07D519/02; macromolecular compounds having statistically distributed amino acid units in their molecules, i.e. when the preparation does not provide for a specific; but for a random sequence of the amino acid units, homopolyamides and block copolyamides derived from amino acids C08G69/00; macromolecular products derived from proteins C08H1/00; preparation of glue or gelatine C09H; single cell proteins, enzymes C12N; genetic engineering processes for obtaining peptides C12N15/00; compositions for measuring or testing processes involving enzymes C12Q; investigation or analysis of biological material G01N33/00)
- A61P: SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)

## Abstract

The present invention provides stabilized activin IIB receptor polypeptides and proteins capable of binding and inhibiting the activities of activin A, myostatin, or GDF-11. The present invention also provides polynucleotides, vectors and host cells capable of producing the stabilized polypeptides and proteins. Compositions and methods for treating muscle-wasting diseases and metabolic disorders are also provided.

## Claims

### Claim 1

An isolated nucleic acid molecule comprising a polynucleotide encoding the polypeptide comprising
(a) a polypeptide consisting of the sequence set forth in SEQ ID NO: 2, except for a single amino acid substitution at position 28, and a single amino acid substitution at position 44, wherein the substitution at position 28 is selected from the group consisting of W and Y, and the substitution at position 44 is T;
(b) a polypeptide consisting of the sequence set forth in amino acids 19 through 134 of SEQ ID NO: 2, except for a single amino acid substitution at position 28, and a single amino acid substitution at position 44, wherein the substitution at position 28 is selected from the group consisting of W and Y, and the substitution at position 44 is T;
(c) a polypeptide consisting of the sequence set forth in amino acids 23 through 134 of SEQ ID NO: 2, except for a single amino acid substitution at position 28, and a single amino acid substitution at position 44, wherein the substitution at position 28 is selected from the group consisting of W and Y, and the substitution at position 44 is T;
(d) a polypeptide consisting of the sequence set forth in amino acids 25 through 134 of SEQ ID NO: 2, except for a single amino acid substitution at position 28, and a single amino acid substitution at position 44, wherein the substitution at position 28 is selected from the group consisting of W and Y, and the substitution at position 44 is T;
(e) a polypeptide having at least 80% sequence identity to any one of (a) through (d), except for a single amino acid substitution at position 28, and a single amino acid substitution at position 44, wherein the substitution at position 28 is selected from the group consisting of W and Y, and the substitution at position 44 is T, wherein the polypeptide is capable of binding myostatin, activin A, or GDF-11.

### Claim 2

An isolated nucleic acid molecule comprising a polynucleotide selected from the group consisting of:
polynucleotide encoding a polypeptide consisting of the sequence set forth in the group consisting of (a) SEQ ID NO: 6;
(b) a polynucleotide encoding a polypeptide having at least 90% sequence identity to (a), wherein the polypeptide has a W or a Y at position 28 and a T at position 44; and wherein the polypeptide is capable of binding myostatin, activin A, or GDF-11; and
(c) a polynucleotide encoding a polypeptide having at least 95% sequence identity to (a), wherein the polypeptide has a W or a Y at position 28 and a T at position 44, and wherein the polypeptide is capable of binding myostatin, activin A, or GDF-11.

### Claim 3 (depends on 2)

The nucleic acid molecule of claim 2, wherein the polynucleotide further comprises polynucleotides encoding at least one heterologous protein.

### Claim 4 (depends on 2)

The nucleic acid molecule of claim 2, wherein the polynucleotide is operably linked to a transcriptional or translational regulatory sequence.

### Claim 5 (depends on 2)

A recombinant vector comprising the nucleic acid molecule of claim 2.

### Claim 6 (depends on 5)

A host cell comprising the recombinant vector of claim 5.

### Claim 7 (depends on 6)

The host cell of claim 6, wherein the host cell is a mammalian cell.

### Claim 8 (depends on 6)

A method of producing a svActRIIB protein comprising culturing the host cell of claim 6 under conditions promoting the expression of the protein, and recovering the protein.