Osteogenic cell growth using a TGFβ1-von Willebrand's...

Chemistry: molecular biology and microbiology – Animal cell – per se ; composition thereof; process of... – Method of regulating cell metabolism or physiology

Reexamination Certificate

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C435S325000, C435S377000, C435S384000, C435S395000, C435S404000

Reexamination Certificate

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06844191

ABSTRACT:
A method for expressing a recombinant protein from bone marrow-derived cells comprises the steps of treating the bone marrow-derived cells in vitro with a TGFβ1 protein, which selects a population of the cells for further treatment. The selected cells can then be expanded, after which a gene encoding a therapeutic protein can be inserted into the expanded cells and thereafter express the therapeutic protein. The transduced cells can then be introduced into a mammal to produce a therapeutic result.

REFERENCES:
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Gordon, E.M. et al., “Capture and Expression of Bone Marrow-Derived Mesenchymal Progenitor Cells with a Transforming Growth Factor-β1-von Willebrand's Factor Fusion Protein for Retrovirus-Mediated Delivery of Coagulation Factor IX”,Human Gene Therapy, 8:1385-1394 (1997).
Takagi T. et al., Collagen-binding Domain within Bovine Propolypeptide of von Willebrand Factor,Journal of Biological Chemistry, vol. 266, No. 9, pp. 5575-5579 (1991).
Ronald G. Crystal, Transfer of Genes to Humans: Early Lessons and Obstacles to Success,Science, vol. 270, pp. 404-410, Oct. 20, 1995.
Gordon et al., “Capture of bone marrow-derived human mesencymal stem cells with a transforming growth factor β1 (TGFβ1) fusion protein: implications for gene therapy for hemophilia B”Blood, vol. 86, supp. 1, p. 998a (Dec. 1995).
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Mizuno et al., “TGF-beta accelerated the osteogenic differentiation of bone marrow cells induced by collagen matrix,”Biochemical and Biophysical Research Communications, vol. 211, No. 3, pp. 1091-1098 (Jun. 26, 1995).

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