IP Library Granted Patent US 12,215,348
Granted Patent B2
US 12,215,348 · App. 18/506,851 · Granted Feb 4, 2025

Methods for producing genetically engineered cell compositions and related compositions

Inventors: Mirna Mujacic (Seattle, WA); Ayu Rahardjo (Kirkland, WA)
Assignee: Juno Therapeutics, Inc.
C12N5/0636A61K39/4611A61K39/4631A61K39/464417C12N7/00C12N15/86G01N33/56972A61K2239/48C12N2502/1114C12N2740/13043C12N2740/15043G01N2333/70514G01N2333/70517
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Quick Facts
Patent No.
US 12,215,348
App. No.
18/506,851
Granted
Feb 4, 2025
Kind
B2
Abstract

Provided herein are methods and compositions for generating engineered cells, such as cells expressing a recombinant receptor, including methods involving stimulation and/or engineering of an input composition having a defined ratio of naïve-like CD4+ T cells to naïve-like CD8+ T cells. In particular, the methods can be used to engineer T cells with genetically engineered receptors, such as genetically engineered antigen receptors such as engineered (recombinant) TCRs and chimeric antigen receptors (CARs), or other recombinant chimeric receptors. Features of the methods include producing a more consistent and/or predictable T cell product and/or a product with lower toxicity compared with other methods.

Claims (34)

1. A method of generating a composition of engineered cells, the method comprising:

contacting an input cell composition comprising naïve-like CD4+ T cells and naïve-like CD8+ T cells from a biological sample from a subject with an agent comprising a nucleic acid molecule encoding a recombinant receptor under conditions to introduce the nucleic acid encoding the recombinant receptor into cells in the composition;

wherein the naïve-like CD4+ T cells and the naïve-like CD8+ T cells are surface positive for CD45RA, CD27 and/or CCR7 and are surface negative for CD45RO and/or CD62L;

wherein the ratio of naïve-like CD4+ T cells to naïve-like CD8+ T cells present in the input cell composition is between 10:1 and 0.05:1, inclusive; and

wherein the method produces recombinant receptor expressing T cells.

2. The method of claim 1 , further comprising stimulating the cells, prior to, during and/or subsequent to said contacting, wherein stimulating comprises incubating the cells in the presence of one or more stimulating agents, wherein stimulating results in activation and/or proliferation of the cells.

3. A method of generating a composition of engineered cells, the method comprising:

(i) stimulating an input cell composition comprising naïve-like CD4+ T cells and naïve-like CD8+ T cells from a biological sample from a subject in the presence of one or more stimulating agents, wherein the naïve-like CD4+ T cells and the naïve-like CD8+ T cells are surface positive for CD45RA, CD27 and/or CCR7 and are surface negative for CD45RO and/or CD62L, wherein the ratio of naïve-like CD4+ T cells to naïve-like CD8+ T cells present in the input cell composition is between 10:1 and 0.05:1, inclusive; and wherein stimulating results in activation of the cells;

(ii) contacting the input cell composition with an agent comprising a nucleic acid molecule encoding a recombinant receptor under conditions to introduce the nucleic acid encoding the recombinant receptor into cells in the composition; and

(iii) stimulating the cells subsequent to said contacting, wherein stimulating comprises incubating the cells in the presence of one or more stimulating agents and wherein stimulating results in proliferation of the cells,

wherein the method produces recombinant receptor expressing T cells.

4. The method of claim 1 , wherein the naïve-like CD4+ T cells and the naïve-like CD8+ T cells are surface positive for CD45RA and CCR7.

5. The method of claim 1 , wherein the naïve-like CD4+ T cells and the naïve-like CD8+ T cells are surface positive for CD27 and CCR7.

6. The method of claim 1 , wherein the naïve-like CD4+ T cells and the naïve-like CD8+ T cells are surface positive for CCR7 and surface negative for CD62L.

7. The method of claim 1 , wherein the input cell composition comprises a ratio of naïve-like CD4+ T cells to naïve-like CD8+ T cells of between 0.8:1 and 2.2:1, each inclusive.

8. The method of claim 4 , wherein the input cell composition comprises a ratio of CCR7+CD45RA+CD4+ cells to CCR7+CD45RA+CD8+ cells of between 0.8:1 and 2.2:1, each inclusive.

9. The method of claim 4 , wherein the input cell composition comprises a ratio of CCR7+CD45RA+CD4+ cells to CCR7+CD45RA+CD8+ cells of or about 1.4:1, 1.1:1, or 1.0:1.

10. The method of claim 5 , wherein the input cell composition comprises a ratio of CD27+CCR7+CD4+ cells to CD27+CCR7+CD8+ cells of between 1.2:1 and 2.4:1, each inclusive.

11. The method of claim 5 , wherein the input cell composition comprises a ratio of CD27+CCR7+CD4+ cells to CD27+CCR7+CD8+ cells of or about 2.7:1.

12. The method of claim 5 , wherein the input cell composition comprises a ratio of CD27+CCR7+CD4+ cells to CD27+CCR7+CD8+ cells of or about 1.69:1.

13. The method of claim 6 , wherein the input cell composition comprises a ratio of CD62L-CCR7+CD4+ cells to CD62L-CCR7+CD8+ cells of between 0.8:1 and 2.2:1, each inclusive.

14. The method of claim 6 , wherein the input cell composition comprises a ratio of CD62L-CCR7+CD4+ cells to CD62L-CCR7+CD8+ cells of or about 2.2:1, 2:1, 1.6:1, or 1.66:1.

15. The method of claim 1 , wherein the composition of engineered cells comprises at least 50%, at least 70%, at least 90%, or 100% of cells that express the recombinant receptor.

16. The method of claim 1 , wherein the ratio of recombinant receptor expressing CD4+ T cells to recombinant receptor expressing CD8+ T cells is or is about 8.6:1, 7.6:1, 2.6:1, 2.0:1, 1.6:1, 1.4:1, 1.3:1, 1.2:1, 1.1:1, or 1.0:1.

17. The method of claim 1 , wherein the ratio of recombinant receptor expressing CD4+ T cells to recombinant receptor expressing CD8+ T cells is or is about 2.6:1 or 2.0:1.

18. The method of claim 1 , wherein the ratio of recombinant receptor expressing CD27+CCR7+CD4+ T cells to recombinant receptor expressing CD27+CCR7+CD8+ T cells is or is about 8.6:1, 7.6:1, 2.6:1, 2.0:1, 1.6:1, 1.4:1, 1.3:1, 1.2:1, 1.1:1, or 1.0:1.

19. The method of claim 1 , wherein the ratio of recombinant receptor expressing CCR7+CD45RA+CD4+ T cells to recombinant receptor expressing CCR7+CD45RA+CD8+ T cells is or is about 8.6:1, 7.6:1, 2.6:1, 2.0:1, 1.6:1, 1.4:1, 1.3:1, 1.2:1, 1.1:1, or 1.0:1.

20. The method of claim 1 , wherein the ratio of recombinant receptor expressing CD62L-CCR7+CD4+ T cells to recombinant receptor expressing CD62L-CCR7+CD8+ T cells is or is about 8.6:1, 7.6:1, 2.6:1, 2.0:1, 1.6:1, 1.4:1, 1.3:1, 1.2:1, 1.1:1, or 1.0:1.

21. The method of claim 1 , wherein the recombinant receptor is a chimeric antigen receptor (CAR).

22. The method of claim 1 , wherein the biological sample is or comprises a whole blood sample, a buffy coat sample, a peripheral blood mononuclear cells (PBMC) sample, an unfractionated T cell sample, a lymphocyte sample, a white blood cell sample, an apheresis product, or a leukapheresis product.

23. The method of claim 1 , wherein the subject is a human subject.

24. The method of claim 1 , wherein the input cell composition comprises from or from about 1×10 7 to 5×10 9 total cells or total T cells, or of viable populations of any of the foregoing.

25. The method of claim 3 , wherein the one or more one stimulating agents is selected from the group consisting of CD3-binding molecules; CD28-binding molecules; recombinant IL-2; recombinant IL-15; and recombinant IL-7, a vaccine comprising an antigen specifically recognized by the antigen receptor, and an anti-idiotype antibody that specifically binds the antigen receptor or combinations thereof.

26. The method of claim 25 , wherein the one or more one stimulating agents comprises CD3-binding molecules and CD28-binding molecules.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 20, 2024
From: MUJACIC, MIRNA; RAHARDJO, AYU
To: JUNO THERAPEUTICS, INC.
Reel/Frame 066504/0516 →
Continuity (4)
Continuation 16637709
Provisional Application 62596770 · Dec 8, 2017
Provisional Application 62543363 · Aug 9, 2017
Related Publication 20240076617A1 · Mar 7, 2024
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