IP Library › Granted Patent US 12,337,040
Granted Patent B2
US 12,337,040 · App. 17/555,233 · Granted Jun 24, 2025

Dystrophin R16/R17 syntrophin PDZ fusion proteins

Inventors: Dongsheng Duan (Columbia, MO); Yi Lai (Columbia, MO); Junling Zhao (Columbia, MO); Yongping Yue (Columbia, MO)
Assignee: THE CURATORS OF THE UNIVERSITY OF MISSOURI
A61K48/005A61K9/0019A61K35/28A61K48/00A61P25/14C07K14/4716C12N5/0663C12N15/62C12N15/85C12N15/86A61K35/00A61K38/00C07K2319/00C07K2319/01C12N2750/14143
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Quick Facts
Patent No.
US 12,337,040
App. No.
17/555,233
Granted
Jun 24, 2025
Kind
B2
Abstract

Synthetic nucleic acids encoding mini and microdystrophin genes comprising the membrane binding motifs or domains of the R10-R11-R12 region are provided. Also provided are vectors, host cells, and related methods of using the same to treat a subject suffering from Duchenne muscular dystrophy (DMD), Becker muscular dystrophy (BMD) or X-linked dilated cardiomyopathy (XLDC), or for ameliorating one or more adverse effects of DMD, BMD, or XLDC. Also provided are a fusion protein comprising a nNOS binding domain of dystrophin R16-R17 that is operably linked to a syntrophin PDZ domain and synthetic nucleic acids comprising the same that can be used to treat subjects with diseases characterized by loss of sarcolemmal neuronal nitric oxide synthase (nNOS) activity.

Claims (25)

1. A synthetic nucleic acid molecule comprising:

(i) a sequence encoding a fusion protein comprising a nNOS binding domain of dystrophin R16-R17 that is operably linked to a syntrophin PDZ domain,

wherein the n-terminal alpha-helix, alpha-helix 2, and alpha-helix 3 of the R16 domain are present in the fusion protein and alpha-helix 1, alpha-helix 2, and alpha-helix 3 of the R17 domain are present in the fusion protein; or

(ii) a sequence encoding a fusion protein comprising a nNOS binding domain of dystrophin R16-R17 that is operably linked to a syntrophin PDZ domain,

wherein the n-terminal alpha helix of the R16 domain (SEQ ID NO: 59) or a portion thereof is substituted in phase with an alpha helix from another dystrophin repeat; and

wherein alpha-helix 2 and alpha-helix 3 of the R16 domain are present in the fusion protein and alpha-helix 1, alpha-helix 2, and alpha-helix 3 of the R17 domain are present in the fusion protein.

2. A composition comprising the synthetic nucleic acid molecule of claim 1 and a pharmaceutically acceptable carrier.

3. An isolated host cell comprising the synthetic nucleic acid molecule of claim 1 .

4. A single recombinant adeno-associated virus (AAV) vector comprising the synthetic nucleic acid molecule of claim 1 , wherein said synthetic nucleic acid molecule is operably linked to an expression cassette and viral inverted terminal repeats (ITRs) in the AAV.

5. A composition comprising the vector of claim 4 and a pharmaceutically acceptable carrier.

6. An isolated host cell comprising the vector of claim 4 .

7. A dual recombinant AAV vector system, comprising two AAV vectors, wherein one of the two AAV vectors comprises a part of the synthetic nucleic acid molecule of claim 1 , and the other vector comprises the remaining part of said synthetic nucleic acid molecule, wherein the two vectors further comprise sequences that permit recombination with each other to produce said nucleic acid in full length, and wherein the nucleic acid in full length is operably linked to an expression cassette and viral ITRs.

8. A composition comprising the vectors of claim 7 and a pharmaceutically acceptable carrier.

9. An isolated host cell comprising the vectors of claim 7 .

10. A lentiviral vector comprising the synthetic nucleic acid molecule of claim 1 , wherein the synthetic nucleic acid molecule is operably linked to an expression cassette, 5′ and 3′ long terminal repeats (LTR), and a psi sequence in the lentiviral vector.

11. A composition comprising the vector of claim 10 and a pharmaceutically acceptable carrier.

12. An isolated host cell comprising the vector of claim 10 .

13. A method of increasing the localization of nNOS to the sarcolemma of a subject having a neuromuscular disorder characterized by loss of sarcolemmal neuronal nitric oxide synthase (nNOS) activity, the method comprising administering to the subject a therapeutically effective amount of the synthetic nucleic acid molecule of claim 1 .

14. The method of claim 13 , wherein the neuromuscular disorder characterized by loss of sarcolemmal nNOS activity is selected from the group consisting of Duchenne muscular dystrophy (DMD), age-related muscle atrophy, and cancer cachexia.

15. The method of claim 13 , wherein the neuromuscular disorder characterized by loss of sarcolemmal nNOS activity is selected from the group consisting A of Duchenne muscular dystrophy (DMD), Becker muscular dystrophy (BMD), and X-linked dilated cardiomyopathy (XLDC).

16. The method of claim 13 , wherein the synthetic nucleic acid molecule is administered via a lentiviral vector comprising the synthetic nucleic acid molecule, and wherein the nucleic acid molecule is operably linked to an expression cassette, 5′ and 3′ long terminal repeats (LTR), and a psi sequence in the lentiviral vector.

17. The method of claim 13 , wherein the synthetic nucleic acid molecule is administered via a single recombinant adeno-associated virus (AAV) vector comprising said synthetic nucleic acid molecule, and wherein said nucleic acid molecule is operably linked to an expression cassette and viral inverted terminal repeats (ITRs) in the AAV.

18. The method of claim 13 , wherein a defective endogenous dystrophin gene of the host cell or a defective portion thereof is edited to provide the synthetic nucleic acid molecule within the host cell's X-chromosome.

19. The method of claim 13 , wherein the neuromuscular disorder characterized by loss of sarcolemmal nNOS activity is selected from the group consisting of Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD).

20. The method of claim 13 , wherein the neuromuscular disorder characterized by loss of sarcolemmal nNOS activity is Duchenne muscular dystrophy (DMD).

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 13, 2022
From: DUAN, DONGSHENG; LAI, YI; ZHAO, JUNLING; YUE, YONGPING
To: THE CURATORS OF THE UNIVERSITY OF MISSOURI
Reel/Frame 060183/0200 →
Continuity (5)
Continuation 16311236
Provisional Application 62367559 · Jul 27, 2016
Provisional Application 62357865 · Jul 1, 2016
Provisional Application 62352927 · Jun 21, 2016
Related Publication 20220175964A1 · Jun 9, 2022
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