Protein sustaining undifferentiated stem cells as such
First Claim
1. A polypeptide having a WIF domain which maintains pluripotency without differentiating a stem cell.
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Accused Products
Abstract
The sustaining stem cells for example, hematopoietic stem cells while holding in the undifferentiated state and maintaining pluripotency by providing a polypeptide having a WIF domain for example, WIF-1 to the stem cells has been successfully achieved. This polypeptide preferably also contains an EGF-like repeat. This result has been achieved by providing a polypeptide preferably having the WIF domain together with a stem cell survival factor such as SCF. Thus, it becomes possible to easily provide a large amount of stem cells for example, hematopoietic stem cells containing functional precursor cells. It has also become possible to more efficiently transfer a gene into the stem cells. Because it is homogeneous and almost free from impurities, the stem cell composition can remarkably relieve side effects for example, infection, which occur in conventional therapies using hematopoietic stem cells.
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Citations
86 Claims
- 1. A polypeptide having a WIF domain which maintains pluripotency without differentiating a stem cell.
- 8. A composition for maintaining pluripotency without differentiating a stem cell comprising a polypeptide having a WIF domain.
- 13. A stem cell which does not differentiate in vitro and maintains pluripotency.
- 17. A long period pluripotency maintaining cell composition comprising a stem cell and a polypeptide having a WIF domain.
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28. A method for maintaining pluripotency without differentiating a stem cell, comprising the step of:
1) providing the stem cell with a polypeptide having a WIF domain. - View Dependent Claims (29, 30, 31, 32)
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38. A method for producing a long period pluripotency maintaining cell composition comprising the steps of:
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1) providing a stem cell;
2) treating the stem cell with a polypeptide having a WIF domain; and
3) collecting the stem cell treated. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A method for treating a disease or disorder originating frome a disorder of a differentiated cell, comprising the steps of:
1) administering a long period pluripotency maintaining cell composition to a subject wherein the long period pluripotency maintaining cell composition comprises;
a stem cell; and
a polypeptide having a WIF domain. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. A pharmaceutical composition for treating a disease or disorder originating from a disorder of a differentiated cell comprising:
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a stem cell;
a polypeptide having a WIF domain; and
a pharmaceutically acceptable carrier. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74)
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- 75. Use of a polypeptide having a WIF domain for maintaining the pluripotency of a stem cell without differentiation.
Specification