Rapid preparation of stem cell matrices for use in tissue and organ treatment and repair
First Claim
1. A rapid method of preparing a stem cell-biomatrix for use in tissue and organ treatment or repair comprising:
- a) admixing a stem cell preparation with a physiologically acceptable matrix material to form a stem cell matrix; and
b) incubating the stem-cell matrix of step a in vitro for less than about 12 hours prior to use in tissue or organ treatment or repair in a recipient.
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Abstract
The present invention describes a rapid method for preparing stem cell and physiologically acceptable matrix compositions for use in tissue and organ repair. Compared with previous tissue engineering materials, the stem cell-matrix compositions of the present invention do not require long-term incubation or cultivation in vitro prior to use in in vivo applications. The stem cells can be from numerous sources and may be homogeneous, heterogeneous, autologous, and/or allogeneic in the matrix material. The stem cell-matrix compositions as described provide point of service utility for the practitioner, wherein the stem cells and matrix can be combined not long before use, thereby alleviating costly and lengthy manufacturing procedures. In addition, the stem cells offer unique structural properties to the matrix composition which improves outcome and healing after use. Use of stem cells obtained from muscle affords contractility to the matrix composition.
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Citations
45 Claims
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1. A rapid method of preparing a stem cell-biomatrix for use in tissue and organ treatment or repair comprising:
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a) admixing a stem cell preparation with a physiologically acceptable matrix material to form a stem cell matrix; and
b) incubating the stem-cell matrix of step a in vitro for less than about 12 hours prior to use in tissue or organ treatment or repair in a recipient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 39, 40, 41, 42, 43, 44, 45)
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23. A rapid method of preparing a stem cell-biomatrix for use in tissue and organ treatment or repair comprising:
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a) admixing a stem cell preparation with a first physiologically acceptable matrix material to form a first stem cell-matrix combination;
b) introducing the first stem cell-matrix combination of step a) onto a second physiologically acceptable matrix material to form a second stem cell-matrix material, wherein the first stem cell-matrix combination and the second physiologically acceptable matrix material are incubated in vitro for between about 5 seconds and 1 hour; and
c) applying the second stem cell-matrix material of step b on or in a tissue or organ site in a recipient.
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38. A preparation of stem cells and a physiologically acceptable substrate material forming an implantable and innervatable three-dimensional scaffolding for tissue and organ repair.
Specification