IP Library Granted Patent US 12,258,369
Granted Patent B2
US 12,258,369 · App. 18/467,224 · Granted Mar 25, 2025

Compositions and methods for synthesizing 5′-capped RNAs

Inventors: Richard I. Hogrefe (San Diego, CA); Alexandre Lebedev (San Diego, CA); Anton P. McCaffrey (San Diego, CA); Dongwon Shin (San Diego, CA)
Assignee: TriLink BioTechnologies, LLC
C07H21/02A23L33/13A61K31/711A61K31/7115A61K31/712C12N15/11C12P19/34C12Y207/07
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Quick Facts
Patent No.
US 12,258,369
App. No.
18/467,224
Granted
Mar 25, 2025
Kind
B2
Abstract

Provided herein are methods and compositions for synthesizing 5′Capped RNAs wherein the initiating capped oligonucleotide primers have the general form m7 Gppp[N 2′Ome ] n [N] m wherein m7 G is N7-methylated guanosine or any guanosine analog, N is any natural, modified or unnatural nucleoside, “n” can be any integer from 0 to 4 and “m” can be an integer from 1 to 9.

Claims (50)

1. An initiating capped oligonucleotide primer comprising the following structure:

wherein:

each of B 1 through Bio is independently a natural, modified or unnatural nucleoside base;

M is 0 or 1;

L is 0 or 1;

q 1 is 1 and each of q 2 through q 9 is independently 0 or 1;

each R 1 is independently H or methyl;

R 2 and R 3 are independently H, OH, alkyl, O-alkyl, halogen, a linker or a detectable marker;

each of X 1 through X 13 is independently O or S;

each of Y 1 through Y 13 is independently OH, SH, BH 3 , aryl, alkyl, O-alkyl or O-aryl;

each of Z 0 through Z 22 is independently O, S, NH, CH 2 , C(halogen) 2 or CH (halogen); and

each of R 4 through R 12 is independently H, OH, O-methyl, or a detectable marker, wherein:

B 1 is complementary to a nucleoside base on a nucleic acid template at transcription template position +1 from the transcription start site,

B 2 through B 9 , if present, are complementary to the respective nucleoside bases on the nucleic acid template at transcription template position +2 and so on from the transcription start site, and

B 10 , the last nucleoside base of initiating capped oligonucleotide primer, is complementary to the last hybridized transcription template nucleotide.

2. The initiating capped oligonucleotide primer of claim 1 , wherein each Ris H.

3. The initiating capped oligonucleotide primer of claim 1 , wherein R 2 and R 3 are each independently OH or O-methyl.

4. The initiating capped oligonucleotide primer of claim 1 , wherein R 4 is OH or O-methyl.

5. The initiating capped oligonucleotide primer of claim 1 , wherein each of B 1 through B 10 is independently adenine, N 6 -methyladenine, guanine, cytosine, or uracil.

6. The initiating capped oligonucleotide primer of claim 1 , wherein B 1 is adenine or N 6 -methyladenine.

7. The initiating capped oligonucleotide primer of claim 1 , wherein B 1 is guanine.

8. The initiating capped oligonucleotide primer of claim 1 , wherein B 10 is guanine.

9. The initiating capped oligonucleotide primer of claim 1 , wherein B 10 is uracil.

10. The initiating capped oligonucleotide primer of claim 1 , wherein each of q2 through q 9 is 0.

11. The initiating capped oligonucleotide primer of claim 10 , wherein B 1 is adenine, N 6 -methyladenine, or guanine.

12. The initiating capped oligonucleotide primer of claim 10 , wherein B 10 is guanine or uracil.

13. The initiating capped oligonucleotide primer of claim 10 , wherein B 1 dis adenine and B 10 is guanine.

14. The initiating capped oligonucleotide primer of claim 10 , wherein B 1 is N 6 -methyladenine and B 10 is guanine.

15. The initiating capped oligonucleotide primer of claim 10 , wherein B 1 is adenine and B 10 is uracil.

16. The initiating capped oligonucleotide primer of claim 10 , wherein B 1 is guanine and B 10 is guanine.

17. The initiating capped oligonucleotide primer of claim 10 , wherein B 1 is cytosine and B 10 is guanine.

18. The initiating capped oligonucleotide primer of claim 10 , wherein R 1 is H and R 4 is O-methyl.

19. The initiating capped oligonucleotide primer of claim 1 , wherein the initiating capped oligonucleotide primer has the following structure:

20. The initiating capped oligonucleotide primer of claim 1 , wherein the initiating capped oligonucleotide primer has the following structure:

21. The initiating capped oligonucleotide primer of claim 1 , wherein the initiating capped oligonucleotide primer has the following structure:

22. The initiating capped oligonucleotide primer of claim 1 , wherein the initiating capped oligonucleotide primer has the following structure:

23. The initiating capped oligonucleotide primer of claim 1 , wherein q 1 is 1, q 2 is 1, and each of q 3 through q 9 is 0.

24. The initiating capped oligonucleotide primer of claim 23 , wherein B 1 is adenine, B 2 is guanine, and Bio is guanine.

25. The initiating capped oligonucleotide primer of claim 1 , wherein the initiating capped oligonucleotide primer has the following structure:

26. An RNA molecule comprising the initiating capped oligonucleotide primer according to claim 1 .

27. An isolated cell containing an RNA molecule comprising the initiating capped oligonucleotide primer according to claim 1 .

28. A pharmaceutical composition comprising an RNA molecule comprising the initiating capped oligonucleotide primer according to claim 1 and a pharmaceutical acceptable carrier.

29. A complex comprising an initiating capped oligonucleotide primer and a DNA template,

wherein the initiating capped oligonucleotide primer comprises a structure:

wherein

B 1 is guanine;

B 2 and B 3 are independently a natural, a modified, or an unnatural nucleoside base; and

R 1 , R 2 , R 3 and R 4 are independently OH or O-methyl;

wherein the DNA template comprises a promoter region comprising a transcriptional start site having a first nucleotide at nucleotide position +1, a second nucleotide at nucleotide position +2, and a third nucleotide at nucleotide position +3; and

wherein the initiating capped oligonucleotide primer is hybridized to the DNA template at least at nucleotide positions +1, +2, and +3.

Assignments (3)
SECURITY INTEREST Recorded Jun 3, 2026
From: TRILINK BIOTECHNOLOGIES, LLC; CYGNUS TECHNOLOGIES, LLC; GLEN RESEARCH, LLC
To: BSP AGENCY, LLC, AS COLLATERAL AGENT
Reel/Frame 074835/0788 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 31, 2024
From: HOGREFE, RICHARD I.; LEBEDEV, ALEXANDRE; MCCAFFREY, ANTON P.; SHIN, DONGWON
To: TRILINK BIOTECHNOLOGIES, INC.
Reel/Frame 066309/0913 →
CHANGE OF NAME Recorded Jan 31, 2024
From: TRILINK BIOTECHNOLOGIES, INC.
To: TRILINK BIOTECHNOLOGIES, LLC
Reel/Frame 066384/0739 →
Continuity (4)
Continuation 17091422 · Nov 6, 2020
Continuation 15761957
Provisional Application 62221248 · Sep 21, 2015
Related Publication 20240140982A1 · May 2, 2024
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