Multi-layer cell encapsulation for tissue engineering

Chemistry: molecular biology and microbiology – Carrier-bound or immobilized enzyme or microbial cell;... – Enzyme or microbial cell is immobilized on or in an organic...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C435S177000, C435S180000, C427S213340, C514S963000

Reexamination Certificate

active

06916640

ABSTRACT:
A multi-layered microcapsule has an inner extracellular matrix and an outer shell. The inner extracellular matrix includes a first inner layer of biopolymer and a second intermediate layer of polymer that provides partial immune-protection and holds the first layer in place. The outer shell can form an exoskeleton to provide mechanical stability. Each of the individual layers can be varied to optimize mechanical stability, cell function, and immuno-protection.

REFERENCES:
patent: 3959078 (1976-05-01), Guire
patent: 4293654 (1981-10-01), Levine et al.
patent: 4743545 (1988-05-01), Torobin
patent: 4798786 (1989-01-01), Tice et al.
patent: 4994388 (1991-02-01), Hillegas et al.
patent: 5620883 (1997-04-01), Shao et al.
patent: 5833979 (1998-11-01), Schinstine et al.
patent: 5837234 (1998-11-01), Gentile et al.
patent: 5840576 (1998-11-01), Schinstine et al.
patent: 5846952 (1998-12-01), Vournakis et al.
patent: 5853717 (1998-12-01), Schinstine et al.
patent: 5858350 (1999-01-01), Vournakis et al.
patent: 5858747 (1999-01-01), Schinstine et al.
patent: 5908623 (1999-06-01), Baetge et al.
patent: 0 222 718 (1987-05-01), None
patent: 0 529 751 (1993-03-01), None
patent: WO 91/07485 (1991-05-01), None
Chia et al, Biomaterials, 2002, vol. 23, No. 3, pp. 849-856.
Koster, J. The Integrin Page, 1997, accessed Sep. 2004. http://integrins.hypermart.net/index/html□□.
Ishikawa, O., Kondo, A., Okada, K., Miyachi, Y., and Furumura, M., British Journal of Dermatology, Morphological and biochemical analyses on fibroblasts and self-produced collagens in a novel three-dimensional culture, 1997: 136: pp. 6-11.
Puviani, A.C., Lodi, A., Tassinari, B., Ottolenghi, C., Ganzerli, S., Ricci, D., Pazzi, P., and Morsiani, E., The International Journal of Artificial Organs, Morphological and functional evaluation of isolated rat hepatocytes in three dimensional culture systems, vol. 22, No. 11, 1999, pp. 778-785.
Cappai, A., Petruzzo, P., Ruiu, G., Congui, T., Dessy, E., De Seta, W., Santa Cruz, G, and Brotzu, G., The International Journal of Artificial Organs, Evaluation of new small barium alginate microcapsules, vol. 18, No. 2, 1995, pp. 96-102.
Konur, Abdo, Kreutz, Marina, Knüchel, Ruth, Krause, Stefan W., and Andreesen, Reinhard, International Union Against Cancer Journal, Three-Dimensional Co-Culture of Human Monocytes and Macrophages with Tumor Cells: Analysis of Macrophage Differentiation and Activation, 66, pp. 645-652, 1996.
Zekorn, T., Endl, A., Horcher, A., Siebers, U., Bretzel, R. G., and Federlin, K., Transplantation Proceedings, Mixed Lymphocyte Islet Culture for Assessment of Immunoprotection by Islet Microencapsulation, vol. 27, No. 6, Dec., 1995, pp. 3362-3363.
Kunz-Schughart, Leoni A., Kreutz, Marina, and Knuechel, Ruth, International Journal of Experimental Pathology, Multicellular spheroids: a three-dimensional in vitro culture system to study tumour biology, 1998, 79, pp. 1-23.
Kaufmann, P.M., Heimrath, S., Kim, B.S., and Mooney, D.J. Elsevier Science Inc., Cell Transplantation, Highly Porous Polymer Matrices as a Three-Dimensional Culture System for Hepatocytes, vol. 6, No. 5, pp. 463-468, 1997.
Weber, Collin J., Hagler, Mary K., Chryssochoos, John T., Kap, Judith A., Korbutt, Gregory S., Rajotte, Ray V., and Linsley, Peter S., Elsevier Science Inc., Cell Transplantation, CTLA4-1g Prolongs Survival of Microencapsulated Neonatal Porcine Islet Xenografts in Diabetic NOD Mice, vol. 6, No. 5, pp. 506-508, 1997.
Wang, W.J., Inoue, K., Hayashi, H., Aung, T., Tun, T., Gu, Y.J., Kaji, H., Echigo, Y., Kato, M., Doi, R., Setoyama, H. Kawakami, Y., Imamura, M., Maetani, S., Morikawa, N., Iwata, H., Ikada, Y., and Miyazaki, J.I., Transplantation Proceedings, Efficacy of Microencapsulation of a Pancreatic B-Cell Line (MIN8) in an Agarose/PPSa Microbead as a Bioartificial Pancreas, vol. 28, No. 2, Apr. 1996, pp. 1094-1096.
Pueyo, M.E., Darquy, S., Arbet-Engels, C., Poitout, V., Di Maria, S., Gangnerau, M.N., and Reach, G., The International Journal of Artificial Organs, A Method for obtaining monodispersed cells from isolated porcine islets of Langerhans, vol. 18, No. 1, 1995, pp. 34-38.
Woods, Erik J., Liu, Jun, Zeiger, Michael A.J., Lakey, Jonathan R.T., and Critser, John K., Cell Transplantation, The Effects of Microencapsulation on Pancreatic Islet Osmotically Induced Volumetric Response, vol. 8, pp. 699-708, 1999.
Ao, Z., Korbutt, G.S., Warnock, G.L., Flashner, M., Colby, C.B., Luskey, K.L., and Rajotte, R.V., Transplantation Proceedings, Microencapsulation Improves Canine Islet Survival In Vivo, vol. 27, No. 6, Dec., 1995, pp. 3349-3350.
Bishop, J.R.P., Nelson, G., and Lamb, J., J. Microencapsulation, Microencapsulation in yeast cells, vol. 15, No. 6, 1998, pp. 761-773.
Kyle, Alastair H., Chan, Carmel T.O., and Minchinton, Andrew I., Biophysical Journal, Characterization of Three-Dimensional Tissue Culture Using Electrical Impedence Spectroscopy, vol. 76, May 1999, pp. 2640-2648.
Lakey, Jonathan R. T., Cavanagh, Thomas J., Ziegler<McMichael A.J., and Wright, MaryJo, Elsevier Science, Inc., Cell Transplantation, Evaluation of a Purified Enzyme Blend for the Recovery and Function of Canine Pancreatic Islets, vol. 7, No. 4, pp. 365-372, 1998.
Hsu, Brend Ray-Sea, Chnag<Fu-Hsiung, Juang, Jyuhn-Huarng, Huang, Yu-Yao, and Fu, Shin-Huei, Cell Transplantation, The Rescue Effect of 15-Deoxyspergualin on Intraperitoneal Microencapsulated Xenoislets, vol. 8, pp. 307-315, 1999.
Bruni, S. and Chang, T.M.S., The International Journal of Artificial Organs, Effect of donor strains and age of the recipient in the use of microencapsulated hepatocytes to control hyperbilirubinemia in the Gunn rat, vol. 18, No. 5, 1995, pp. 332-339.
Takeshita Kazuyoshi, Ishibashi, Haruaki, Suzuki, Masayuki, Yamamoto, Takumi, Akaike, Toshihiro, and Kodama, Masashi, Artificial Organs, High Cell-Density Culture System of hepatocytes Entrapped in a Three-Dimensional Hollow Fiber Module with Collagen Gel, vol. 19, No. 2, pp. 191-193, 1995.
Chandy, Thomas, Moorandian, Daniel L., and Rao, Gundu H.R., Artificial Organs, Evaluation of Modified Alginate-Chitosan-Polyethlene Glycol Microcapsules for Cell Encapsulation, vol. 23, No. 10, pp. 894-903, 1999.
Jork, A., Thürmer, F., Cramer, H., Zimmermann, G., Gessner, P., Hämmel, K., Hofmann, G., Kuttler, B., Hahn, J.-J., Josimovic-Alasevic, O., Fritsch, K.-G., and Zimmermann, U., Springer-Verlag, Appl Microbiol Biotechnol, Biocompatible alginate from freshly collectedLaminaria pallidafor implantation, vol. 53, pp. 224-229, 2000.
Löhr, Matthias, Bago, Zoltan Tibor, Bergmeister, Helga, Ceijna, Manfred, Freund, Mathias, Gelbmann, Wolfgang, Günzburg, Walter H., Jesnowski, Ralf, Hain, Johannes, Hauenstein, Karlheinz, Henninger, Wolfgang, Hoffmeyer, Anne, Karle, Peter, Kröger, Jens-Christian, Kundt, Günther, Losert, Leibe, Stefan, Losert, Udo, Müller, Petra, Probst, Alexander, Püschel, Renner, Matthias, Renz, Renate, Saller, Robert, Salmons, Brian, Schuh, Maximilian, Schwendenwein, Ilse, Von Rombs, Kerstin, Wagner, Thomas, and Walter, Ingrid, Springer-Verlag, J Mol Med, Cell Therapy using microencapsulated 293 cells transfected with a gene construct expressing CYP2B1, an ifosfamide converting enzyme, instilled intra-arterially in patients with advanced-stage pancreatic carcinoma: a phase I/II study, vol. 77, pp. 393-398, 1999.
Robitaille, Robert, Pariseau, Jean-Francois, Leblond, Francios A., Lamoureux, Michel, Lepage, Yves, and Hallé, Jean-Pierre, John Wiley & Sons, Inc., Studies on small (<350μm) alginate-poly-L-lysine microcapsules. III. Biocompatibility of smaller versus standard microencapsules, pp. 116-120, 1999.
De Vos, Paul, Van Straaten, Jeanette, F.M., Nieuwenhuizen, Arie G., De Groot, Martijn, Ploeg, Rutger J., De Haan, Bart J., and Van Schilfgaarde, Reinout, Diabetes, Why Do Microencapsulated Islet Grafts Fail in the Absence of Fibrotic Overgrowth?, vol. 48, pp. 1381-1388, Jul. 1999.
Spancake, Kimberly M., Anderson, Christine B., Weaver, Valerie M., Matsunami, Norisada, Bissel, Mina J., and White, Ra

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Multi-layer cell encapsulation for tissue engineering does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-layer cell encapsulation for tissue engineering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-layer cell encapsulation for tissue engineering will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3432128

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.