Compositions and methods to treating hemoglobinopathies
First Claim
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1. A synthetic BCL11A microRNA comprising:
- a) a first BCL11A segment, a loop segment; and
b) a second BCL11A segment arranged in tandem in a 5′
to 3′
direction, wherein the loop segment is between and directly linked to the first and second BCL11A segments,wherein the first BCL11A segment starts with a -GCGC- at the 5′
end and the second BCL11A segment ends with a -GCGC- at the 3′
end, andwherein the first BCL11A segment is complementary to the second BCL11A segment so that the first and second BCL11A segments base pair to form a hairpin loop with the loop segment forming the loop portion of the hairpin loop thus formed.
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Abstract
Embodiment herein provide specially designed synthetic BCL11A-targeting microRNAs for RNA polymerase II expression, and methods of use to treat hemoglobinopathies such as sickle cell disease or thalassemia by increasing the expression levels of fetal hemoglobin levels. In particular illustrative embodiment, the present invention provides, in part, improved compositions and methods for achieving gene therapy in hematopoietic cells and hematopoietic precursor cells, including erythrocytes, erythroid progenitors, and embryonic stem cells. The invention further provides improved gene therapy methods for treating hematopoietic-related disorders.
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13 Claims
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1. A synthetic BCL11A microRNA comprising:
-
a) a first BCL11A segment, a loop segment; and b) a second BCL11A segment arranged in tandem in a 5′
to 3′
direction, wherein the loop segment is between and directly linked to the first and second BCL11A segments,wherein the first BCL11A segment starts with a -GCGC- at the 5′
end and the second BCL11A segment ends with a -GCGC- at the 3′
end, andwherein the first BCL11A segment is complementary to the second BCL11A segment so that the first and second BCL11A segments base pair to form a hairpin loop with the loop segment forming the loop portion of the hairpin loop thus formed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification