摘要:
The invention relates to methods for manipulating hematopoietic progenitor cells and related products In one aspect the invention relates to the use of agents that activate a PTH/PTHrP receptor to enhance the growth and maintenance of hematopoietic progenitor cells in vivo and in vitro, to enhance mobilization of hematopoietic stem cells, to improve the efficiency of targeting cells to the bone marrow, and/or to modulate hematopoietic progenitor cell function.
摘要:
The present invention features methods and compositions that are useful for promoting stem cell survival and expansion. In addition, the invention also provides compositions and methods for the treatment of neoplasia.
摘要:
The expansion of a population of stem cells or progenitor cells, or precursors thereof, may be accomplished by disrupting or inhibiting p21cip1/waf1 and/or p27, cyclin dependent kinase inhibitors. In the absence of p27 activity, progenitor cells move into the cell cycle and proliferate; whereas in the absence of p21 activity, stem cells move into the cell cycle and proliferate without losing their pluripotentiality (i.e., their ability to differentiate into the various cell lines found in the blood stream). Any type of stem cell or progenitor cell, or precursor thereof, including, but not limited to, hematopoietic, gastrointestinal, lung, neural, skin, muscle, cardiac muscle, renal, mesenchymal, embryonic, fetal, or liver cell may be used in accordance with the invention. The present invention provides a method of expanding a cell population, cells with decreased p27 and/or p21 activity, transgenic animals with a disrupted p27 and/or p21 gene, pharmaceutical compositions comprising the cells of the invention, and methods of using these cells in gene therapy (e.g., stem cell gene therapy) and bone marrow transplantation.
摘要:
The protein tyrosine kinase receptors, designated Rse and HPTK6, have been purified from human and/or murine cell tissues. Rse and HPTK6 have been cloned from a cDNA library of a human liver carcinoma cell line (i.e., Hep 3B) using PCR amplification. Provided herein are nucleic acid sequences encoding Rse and HPTK6 useful as diagnostics and in the recombinant preparation of Rse and HPTK6. Rse and HPTK6 are used in the preparation and purification of antibodies thereto and in diagnostic assays.
摘要:
Methods of selecting a population of human cells containing quiescent pluripotent hematopoietic progenitor cells substantially free of mature, human myeloid and lymphoid cells, the quiescent pluripotent progenitor cells obtained by these methods, and methods of using the pluripotent progenitor cells are described.
摘要:
The protein tyrosine kinase receptors, designated Rse and HPTK6, have been purified from human and/or murine cell tissues. Rse and HPTK6 have been cloned from a cDNA library of a human liver carcinoma cell line (i.e., Hep 3B) using PCR amplification. Provided herein are nucleic acid sequences encoding Rse and HPTK6 useful as diagnostics and in the recombinant preparation of Rse and HPTK6. Rse and HPTK6 are used in the preparation and purification of antibodies thereto and in diagnostic assays.