Chimeric pancreas

Drug – bio-affecting and body treating compositions – Whole live micro-organism – cell – or virus containing – Animal or plant cell

Reexamination Certificate

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C435S001100, C514S866000

Reexamination Certificate

active

07384630

ABSTRACT:
Novel methods, tissues and compositions for increasing the pancreatic mass of a mammalian recipient including harvesting immature pancreatic tissue from a mammalian donor and transplanting said tissue into the peritoneal cavity of a mammalian recipient under conditions that allow the pancreatic tissue to become vascularized and mature, thereby developing a functioning chimeric, endocrine pancreas that produces at least insulin in the recipient. The invention also includes mammalian immature pancreatic tissue adapted for transplantation into the peritoneal cavity of a mammalian recipient for increasing the pancreatic mass of the mammalian recipient as well as methods and compositions for treatment of the pancreatic tissue, recipient immunosuppression and recipient co-stimulatory blockade.

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patent: 5593673 (1997-01-01), Dinsmore
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patent: 2002/0168371 (2002-11-01), Awwad
patent: 2003/0031652 (2003-02-01), Hering et al.
patent: WO 01/39784 (2001-06-01), None
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Groth et al., The Lancet344: 1402-1404 (Nov. 19, 1994).
Rogers et al., Transplant Immunology 14: 67-75 (2005).
Stedman's Medical Dictionary, 2d Edition, definition of the term “primordium”, 2000.
Rogers et al, “Intraperitoneal Transplantation of Pancreatic Anlagen” ASAIO Journal, 2003, vol. 49, No. 5, pp. 527-532.
Hegre et al, “Syngeneic Transplantation of the Fetal Rat Pancreas IV. Dissociated Versus Whole Organ Implantation” Metabolism, 1979, vol. 28, No. 2, pp. 157-162.
Hammerman, “Organogenesis of Endocrine Pancreas from Transplanted Embryonic Anlagen,” Transplant Immunology, 2004, pp. 249-258, vol. 12.
Rogers et al.,Islet cell engraftment and control of diabetes in rats following transplantation of pig pancreatic anlagen, Am. J. Physiol (2004) 286, E502-509.
Eloy et al., Chick Embryo Pancreatic Transplants Reverse Experimental Diabetes of Rats, J. Clin. Invest. (1979) 64, 361-373.

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