Compositions and methods useful for HCV infection
First Claim
Patent Images
1. A composition comprising a cryopreserved cell mixture that comprises liver cells and hematopoietic cells isolated from the liver of a human aged three months or older after conception, wherein a preparation that comprises 4×
- 104 thawed cells of said cryopreserved cell mixture in the presence of a feeder cell line in a growth media produces more than about 5000 copies of hepatitis C virus (HCV) RNA in the media seventy two hours after administration of HCV virus RNA898 to said preparation.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides compositions comprising cells that can effectively produce HCV after HCV infection, compositions for culturing the cells, methods for making the composition and methods for infecting the cells in the composition with HCV. The present invention also provides methods for assaying HCV production and methods for evaluating compounds that affect the production of HCV.
39 Citations
56 Claims
-
1. A composition comprising a cryopreserved cell mixture that comprises liver cells and hematopoietic cells isolated from the liver of a human aged three months or older after conception, wherein a preparation that comprises 4×
- 104 thawed cells of said cryopreserved cell mixture in the presence of a feeder cell line in a growth media produces more than about 5000 copies of hepatitis C virus (HCV) RNA in the media seventy two hours after administration of HCV virus RNA898 to said preparation.
- View Dependent Claims (27, 28, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
-
2. (canceled)
-
3. (canceled)
-
4. (canceled)
-
5. (canceled)
-
6. A composition comprising a cell mixture prepared by the following steps:
-
(a) obtaining a suspension of liver cells from a human aged three months or older after conception in a buffer comprising EGTA by treating said liver cells with a protease, wherein said suspension of liver cells has been treated to remove objects that are 40 micron or greater and said suspension of liver cells does not contain red blood cells;
(b) resuspending the cells of step (a) in a media comprising BSA, nicotinamide, epidermal growth factor (EGF), insulin, transferrin and hydrocortisone and optionally, any one of the ingredients selected from the group consisting of glucagon, liver growth factor, ethanolamine and thyrotropin releasing factor; and
(c) culturing the cells in the serum free media of step (b). - View Dependent Claims (7)
-
-
8. (canceled)
-
9. (canceled)
-
10. (canceled)
-
11. (canceled)
-
12. A composition comprising a cell mixture prepared by the following steps:
-
(a) dissecting a liver of a human aged three months or older after conception in a buffer comprising EGTA;
(b) incubating the dissected liver in a buffer comprising collagenase to separate cells from the liver;
(c) remove objects 40 micron or greater from the separated cells;
removing red blood cells from the separated cells;
(e) resuspending the cells in 10% DMSO and 10% fetal calf serum;
(f) cryopreserving the composition of step 5;
(g) thawing the composition of step 6;
(h) resuspending the cells of step (f) in a serum free media, comprising calcium, free fatty acids (FFAs), high density lipoprotein (HDL), nicotinamide, trace elements, epidermal growth factor (EGF), insulin, transferrin and hydrocortisone and optionally, any one of the ingredients selected from the group consisting of glucagon, liver growth factor, ethanolamine and thyrotropin releasing factor; and
(i) culturing the cells in the serum free media of step (e).
-
-
13. A composition comprising a cell mixture prepared by the following steps:
-
(a) dissecting a liver of a human aged three months or older after conception in a buffer comprising EGTA;
(b) incubating the dissected liver in a buffer comprising collagenase to separate cells from the liver;
(c) remove objects 40 micron or greater from the separated cells;
(d) removing red blood cells from the separated cells;
(e) resuspending the cells of step (d) in a media comprising BSA, nicotinamide, epidermal growth factor (EGF), insulin, transferrin and hydrocortisone and optionally, any one of the ingredients selected from the group consisting of glucagon, liver growth factor, ethanolamine and thyrotropin releasing factor; and
(f) culturing the cells in the serum free media of step (e). - View Dependent Claims (14)
-
-
15. (canceled)
-
16. (canceled)
-
17. (canceled)
-
18. A composition comprising an expanded mixed cell population of liver cells and hematopoietic cells released from the liver of a human aged three months or older after conception, wherein said mixed cell population is selected to exclude cells that express CD34+ but includes cells that express alpha fetoprotein, albumin, and glycophorin.
-
19. (canceled)
-
20. (canceled)
-
21. (canceled)
-
22. (canceled)
-
23. (canceled)
-
24. (canceled)
-
25. (canceled)
-
26. (canceled)
-
29. A composition comprising a media, BSA, nicotinamide, EGF, insulin, transferrin, and hydrocortisone, and, optionally, not low density lipoprotein (LDL) and, optionally, not any one of the ingredients selected from the group consisting of glucagon, liver growth factor, ethanolamine and thyrotropin releasing factor.
-
30. (canceled)
-
31. A method for isolating and cultivating a cell mixture comprising the steps of:
-
(a) obtaining a suspension of liver cells from a human aged three months or older after conception in a buffer comprising EGTA by treating said liver cells with a protease, wherein said suspension of liver cells has been treated to remove objects that are 40 micron or greater and said suspension of liver cells does not contain red blood cells;
(b) resuspending the cells of step (a) in a media comprising BSA, nicotinamide, EGF, insulin, transferrin, hydrocortisone; and
(c) culturing the cells in the serum free media of step (b). - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
-
-
54. A method of preparing a mixed population of liver cells comprising:
-
(a) obtaining a suspension of liver cells from a human aged three months or older after conception in a buffer comprising EGTA by treating said liver cells with a protease, wherein said suspension of liver cells has been treated to remove objects that are 40 micron or greater and said suspension of liver cells does not contain red blood cells;
(b) isolating CD34−
/alpha fetoprotein+/glycoprotein+/albumin+cells from said suspension of liver cells;
(c) resuspending the cells of step (b) in a media comprising BSA, nicotinamide, epidermal growth factor (EGF), insulin, transferrin and hydrocortisone and optionally, any one of the ingredients selected from the group consisting of glucagon, liver growth factor, ethanolamine and thyrotropin releasing factor; and
(d) co-culturing said cells from step (c) in culture media comprising feeder cells to expand said population of liver cells. - View Dependent Claims (55)
-
-
56. (canceled)
Specification