Aligned scaffolds for improved myocardial regeneration

Chemistry: molecular biology and microbiology – Animal cell – per se ; composition thereof; process of... – Solid support and method of culturing cells on said solid...

Reexamination Certificate

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Details

C435S325000, C424S400000, C424S422000, C424S443000

Reexamination Certificate

active

07579189

ABSTRACT:
The present invention relates to a biocompatible, three-dimensional scaffold useful to grow cells and to regenerate or repair tissue in predetermined orientations. The scaffold is particularly useful for regeneration and repair of cardiac tissue. The scaffold contains layers of alternating A-strips and S-strips, wherein the A-strips within each layer are aligned parallel to each other and preferentially promote cellular attachment over attachment to the S-strips. Methods of producing and implanting the scaffold are also provided.

REFERENCES:
patent: 5855610 (1999-01-01), Vacanti et al.
patent: WO 97/41208 (1997-11-01), None
patent: WO 00/34442 (2000-06-01), None
Badylack et al., “Small intestinal submucosa: A substrate for in vitro cell growth,”Journal of Biomaterials Science Polymer Edition, 9(8):863-878, 1998.
Badylak et al., “Morphologic study of small intestinal submucosa as a body wall repair device,”Journal of Surgical Research, 103(2):190-202, 2002.
Badylak et al., “Strength over time of a resorbable bioscaffold for body wall repair in a dog model,”Journal of Surgical Research, 99(2):282-287, 2001.
Evans et al., “Novel 3D culture system for study of cardiac myocyte development,”American Journal of Physiology, 285(2):H570-H578, 2003.
Lu S-H et al., “Muscle derived stem cells seeded into acellular scaffolds develop calcium-dependent contractile activity that is modulated by nicotinic receptors,”Urology, 61:1285-1291, 2003.
Voytik-Harbin et al., “Small intestinal submocosa: A tissue-derived extracellular matrix that promotes tissue-specific growth and differentiation of cells in vitro,”Tissue Engineering, 4(2):157-174, 1998.

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