US5922597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ex vivo culture of stem cells
Assignee: University of Minnesota System
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Filing: 1996-11-13
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Granted: 1999-07-13
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Expires: 2016-11-13
Abstract
Abstract PCT No. PCT/US96/18222 Sec. 371 Date Jul. 14, 1997 Sec. 102(e) Date Jul. 14, 1997 PCT Filed Nov. 13, 1996 PCT Pub. No. WO97/18298 PCT Pub. Date May 22, 1997A method for the culture of hematopoietic cells is provided comprising culturing said cells in stromal conditioned medium comprising one or more cytokines selected from the group consisting of MIP-1 alpha , IL-3, SCF, BB10010 and PF-4, so that the ability of the stem cells to self-replicate and differentiate is maintained or the ability of the committed progenitors to expand and differentiate is maintained.
Inventors
- 👤 Catherine M. Verfaillie
- 👤 Philip B. McGlave
- 👤 Jeffrey S. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:39
CPC Classifications
C; C12; C12N; C12N5/00; C12N5/06; C12N5/0602; C12N5/0634; C12N5/0646; A; A61; A61K; A61K40/00; A61K40/10; A61K40/15; A61K40/40; A61K40/41; A61K40/42; C12N5/0647; A61K35/00; A61K35/12; A61K2035/124; C12N2500/00; C12N2500/30; C12N2500/38; C12N2501/00; C12N2501/10; C12N2501/125; C12N2501/20; C12N2501/21; C12N2501/23; C12N2501/30; C12N2501/38; C12N2501/39; C12N2502/00; C12N2502/13; C12N2502/1394
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
84 words
A method for culturing hematopoietic cells, comprising: culturing a population of human hematopoietic cells comprising stem cells or committed progenitor cells in a stromal conditioned medium in the absence of stromal cells, wherein the medium comprises an effective added amount of one or more cytokines selected from the group consisting of MIP-1α, IL-3, SCF, BB10010 and PF-4, so that the ability of the stem cells to self-replicate and differentiate is maintained or the ability of the committed progenitors to expand and differentiate is maintained.
Claim 2
Independent Claim
84 words
A method for culturing hematopoietic cells, comprising: culturing a population of human hematopoietic cells comprising stem cells or committed progenitor cells in a stromal conditioned medium in the absence of stromal cells, wherein the medium comprises an effective added amount of one or more cytokines selected from the group consisting of MIP-1α, IL-3, SCF, BB10010 and PF-4, so that the ability of the stem cells to self-replicate and differentiate is maintained or the ability of the committed progenitors to expand and differentiate is maintained.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein the hematopoietic cells consist essentially of committed progenitor cells.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein the hematopoietic cells comprise stem cells.
Claim 5
Dependent Claim
15 words
The method of claim 1 wherein the hematopoietic cells are derived from bone marrow cells.
Claim 6
Dependent Claim
16 words
The method of claim 1 wherein the hematopoietic cells are chronic myelogenous leukemia bone marrow cells.
Claim 7
Dependent Claim
19 words
The method of claim 1 wherein the hematopoietic cells are derived from peripheral blood or from newborn cord blood.
Claim 8
Dependent Claim
12 words
The method of claim 1 wherein the hematopoietic cell population is allogeneic.
Claim 9
Dependent Claim
12 words
The method of claim 1 wherein the hematopoietic cell population is autologous.
Claim 10
Dependent Claim
15 words
The method of claim 2 wherein the hematopoietic cells consist essentially of natural killer cells.
Claim 11
Dependent Claim
13 words
The method of claim 3 wherein the stem cells are CD34 + .
Claim 12
Dependent Claim
16 words
The method of claim 10 wherein the stem cells are Lin - CD34 +DR - .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-07-12 | 2003-01-11 | 2003-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-07-12 | 2007-01-11 | 2007-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-07-12 | 2011-01-11 | 2011-07-13 | $7700.00 | Window Closed / Lapsed |