Method of harvesting rare blood products
First Claim
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1. A method of harvesting stem cells from a blood product comprising:
- contacting a blood product comprising stem cells with a porous medium comprising a fibrous web;
selectively retaining the stem cells on the porous medium;
backflushing the porous medium with an elution fluid at a temperature of between about 5-37°
C.; and
selectively eluting the stem cells from the porous medium.
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Abstract
The present invention provides methods of harvesting rare cells from blood products and/or obtaining products of the rare cells. The method includes contacting a blood product containing rare cells with a porous medium, and selectively retaining rare cells of interest on the porous medium. The porous medium can be contacted with an elution fluid wherein a population of the rare cells is eluted from the porous medium. Rare cells selectively retained on the porous medium can be cultured on the porous medium, and products of the rare cells can be obtained.
37 Citations
20 Claims
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1. A method of harvesting stem cells from a blood product comprising:
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contacting a blood product comprising stem cells with a porous medium comprising a fibrous web;
selectively retaining the stem cells on the porous medium;
backflushing the porous medium with an elution fluid at a temperature of between about 5-37°
C.; and
selectively eluting the stem cells from the porous medium. - View Dependent Claims (2, 3, 4)
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5. A method of obtaining products of rare cells comprising:
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contacting a blood product containing rare cells with a porous medium wherein the rare cells are selectively retained on the porous medium, contacting the porous medium with a nutrient-rich culture solution wherein a population of the rare cells is cultured on the porous medium so as to produce products of the rare cells, and isolating the products of the rare cells from the culture solution. - View Dependent Claims (6, 7, 8)
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9. A method of harvesting rare cells from a blood product comprising:
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contacting a blood product containing rare cells with a porous medium;
selectively retaining the rare cells on the porous medium;
contacting the porous medium with an elution fluid at a temperature of between about 5-37°
C.; and
selectively eluting the rare cells from the porous medium. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of harvesting rare cells from a blood product comprising:
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contacting the blood product containing the rare cells with a porous medium;
selectively retaining first and second populations of the rare cells on the porous medium, contacting the first and second populations of rare cells with a factor which promotes the first population to adhere more strongly to the porous medium in comparison with the second population, and contacting the porous medium with an elution fluid comprising a solution physiologically compatible with the first and second populations wherein the second population of the rare cells is eluted from the porous medium to a greater extent than the first population of rare cells. - View Dependent Claims (17, 18, 19, 20)
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Specification