Postpartum cells derived from placental tissue, and methods of making, culturing, and using the same
First Claim
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1. A method for forming cell sheets, which comprises coating a support with a polymer or copolymer which has a lower or upper critical solution temperature within the range of 0°
- C. to 80°
C., culturing cells attached to the surface thereof at a higher temperature than said lower critical solution temperature or at a lower temperature than said upper critical solution temperature on said coated surface, and detaching and collecting said cell sheet from said coated surface by changing the temperature to a lower temperature than said lower critical solution temperature or at a higher temperature than said upper critical solution temperature, wherein said cells are placenta-derived cells comprising cells derived from human postpartum placenta tissue substantially free of blood, wherein said cells self-renew and expand in culture, wherein said cells are multipotent, and wherein said cells grow in about 5% to about 20% oxygen.
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Abstract
Cells derived from postpartum placenta and methods for their isolation are provided by the invention. The invention further provides cultures and compositions of the placenta-derived cells. The placenta-derived cells of the invention have a plethora of uses, including but not limited to research, diagnostic, and therapeutic applications.
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Citations
12 Claims
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1. A method for forming cell sheets, which comprises coating a support with a polymer or copolymer which has a lower or upper critical solution temperature within the range of 0°
- C. to 80°
C., culturing cells attached to the surface thereof at a higher temperature than said lower critical solution temperature or at a lower temperature than said upper critical solution temperature on said coated surface, and detaching and collecting said cell sheet from said coated surface by changing the temperature to a lower temperature than said lower critical solution temperature or at a higher temperature than said upper critical solution temperature, wherein said cells are placenta-derived cells comprising cells derived from human postpartum placenta tissue substantially free of blood, wherein said cells self-renew and expand in culture, wherein said cells are multipotent, and wherein said cells grow in about 5% to about 20% oxygen. - View Dependent Claims (2, 3, 4, 5, 6)
- C. to 80°
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7. A method for forming sheets of isolated placenta-derived cells, which comprises coating a support with a polymer which has a lower critical solution temperature of less than about 30°
- C., culturing said cells at 37°
C. to confluence, lowering the temperature to 20°
C., and collecting said sheets. - View Dependent Claims (8, 9, 10)
- C., culturing said cells at 37°
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11. A method for therapeutically treating mammalian tissue, said method comprising the steps of
I. providing a cell sheet, the cell sheet formed by a method which comprises coating a support with a polymer or copolymer which.has a lower or upper critical solution temperature within the range of 0° - C. to 80°
C., culturing cells attached to the surface thereof at a higher temperature than said lower critical solution temperature or at a lower temperature than said upper critical solution temperature on said coated surface, and detaching and collecting said cell sheet from said coated surface by changing the temperature to a lower temperature than said lower critical solution temperature or at a higher temperature than said upper critical solution temperature,wherein said cells are placenta-derived cells comprising cells derived from human postpartum placenta tissue substantially free of blood, wherein said cells self-renew and expand in culture, wherein said cells are multipotent, wherein said cells require L-valine for growth, and wherein said cells grow in about 5% to about 20% oxygen; and
,II. transplanting the cell sheet to mammalian tissue. - View Dependent Claims (12)
- C. to 80°
Specification