Methods and compositions for treatment of a beta thalessemia
First Claim
Patent Images
1. A genetically modified CD34+ stem cell comprising a corrected endogenous aberrant human beta-hemoglobin (Hbb) gene, a donor comprising the sequence of SEQ ID NO:
- 19 or SEQ ID NO;
21 and a pair of zinc finger nucleases comprising first and second zinc finger nucleases, wherein each zinc finger nuclease comprises 5 or 6 zinc finger domains, each zinc finger domain comprising a recognition helix region ordered F1 to F5 or F1 to F6, wherein the zinc finger nuclease (ZFN) comprises;
(i) a first zinc finger nuclease that binds to a target site as shown in SEQ ID NO;
5, the first ZFN comprising the following recognition helix regions;
F1;
LRHHLTR (SEQ ID NO;
11);
F2;
QSGTRKT (SEQ ID NO;
12);
F3;
RSDNLST (SEQ ID NO;
13);
F4;
DSANRIK (SEQ ID NO;
14);
F5;
LRHHLTR (SEQ ID NO;
11); and
F6;
QSGNLHV (SEQ ID NO;
15); and
(ii) a second zinc finger nuclease that binds to a target site as shown in SEQ ID NO;
4, the second ZFN comprising the following recognition helix regions;
F1;
AMQTLRV (SEQ ID NO;
16);
F2;
DRSHLAR (SEQ ID NO;
7);
F3;
RSDNLSE (SEQ ID NO;
8);
F4;
ASKTRKN (SEQ ID NO;
9); and
F5;
TSSDRKK (SEQ ID NO;
17) or VYEGLKK (SEQ ID NO;
18),wherein the donor sequence is integrated into an endogenous aberrant human beta-hemoglobin (Hbb) gene following targeted cleavage by the pair of zinc finger nucleases, thereby correcting the sequence of the Hbb gene.
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Abstract
Methods and compositions for treatment of a beta thalessemia are provided.
91 Citations
12 Claims
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1. A genetically modified CD34+ stem cell comprising a corrected endogenous aberrant human beta-hemoglobin (Hbb) gene, a donor comprising the sequence of SEQ ID NO:
- 19 or SEQ ID NO;
21 and a pair of zinc finger nucleases comprising first and second zinc finger nucleases, wherein each zinc finger nuclease comprises 5 or 6 zinc finger domains, each zinc finger domain comprising a recognition helix region ordered F1 to F5 or F1 to F6, wherein the zinc finger nuclease (ZFN) comprises;(i) a first zinc finger nuclease that binds to a target site as shown in SEQ ID NO;
5, the first ZFN comprising the following recognition helix regions;F1;
LRHHLTR (SEQ ID NO;
11);F2;
QSGTRKT (SEQ ID NO;
12);F3;
RSDNLST (SEQ ID NO;
13);F4;
DSANRIK (SEQ ID NO;
14);F5;
LRHHLTR (SEQ ID NO;
11); andF6;
QSGNLHV (SEQ ID NO;
15); and(ii) a second zinc finger nuclease that binds to a target site as shown in SEQ ID NO;
4, the second ZFN comprising the following recognition helix regions;F1;
AMQTLRV (SEQ ID NO;
16);F2;
DRSHLAR (SEQ ID NO;
7);F3;
RSDNLSE (SEQ ID NO;
8);F4;
ASKTRKN (SEQ ID NO;
9); andF5;
TSSDRKK (SEQ ID NO;
17) or VYEGLKK (SEQ ID NO;
18),wherein the donor sequence is integrated into an endogenous aberrant human beta-hemoglobin (Hbb) gene following targeted cleavage by the pair of zinc finger nucleases, thereby correcting the sequence of the Hbb gene. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- 19 or SEQ ID NO;
Specification