IP Library › Granted Patent US 12,350,284
Granted Patent B2
US 12,350,284 · App. 17/051,578 · Granted Jul 8, 2025

BCL11A microRNAs for treating hemoglobinopathies

Inventors: David A. Williams (Dover, MA); Swaroopa Guda (Canton, MA)
A61K31/7105A61P7/00C12N15/1024C12N15/113C12N15/86
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Quick Facts
Patent No.
US 12,350,284
App. No.
17/051,578
Granted
Jul 8, 2025
Kind
B2
Abstract

Embodiments 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.

Claims (17)

1. A synthetic BCL11A microRNA comprising;

a) a first BCL11A segment,

b) a loop segment derived from miRNA144; and

c) 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 second BCL11A segment is complementary to the first 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; and

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,

wherein the loop segment consists of the sequence of AGTTTGCGATGAGACAC (SEQ ID NO: 68).

2. The synthetic BCL11A microRNA of claim 1 , wherein the first and second BCL11A segments are 18 to 25 nucleotides long.

3. The synthetic BCL11A microRNA of claim 1 , wherein the first BCL11A segment contains a sequence from a BCL11A mRNA sequence.

4. The synthetic BCL11A microRNA of claim 1 , wherein the first BCL11A segment comprises the nucleotide sequence set forth in any one of SEQ ID NOs: 57, 58, 59, 60, 61, 62, 63, 64, and 65.

5. The synthetic BCL11A microRNA of claim 1 , wherein the first BCL11A segment comprises the nucleotide sequence set forth in SEQ ID NO: 61.

6. The synthetic BCL11A microRNA of claim 1 , wherein the microRNA comprising a nucleotide sequence consisting of SEQ ID NO: 98.

7. An isolated nucleic acid molecule comprising the nucleotide sequence of SEQ ID NO: 98.

8. A vector comprising the isolated nucleic acid molecule of claim 7 .

9. A isolated host cell comprising the vector of claim 8 .

10. The isolated host cell of claim 9 , wherein the cell is a hematopoietic stem cell or progenitor cell.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 6, 2025
From: WILLIAMS, DAVID A.; GUDA, SWAROOPA
To: CHILDREN'S MEDICAL CENTER CORPORATION, THE
Reel/Frame 070423/0918 →
Continuity (2)
Provisional Application 62665691 · May 2, 2018
Related Publication 20210085707A1 · Mar 25, 2021
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