Engineered renal tissues, arrays thereof, and methods of making the same
First Claim
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1. A three-dimensional, engineered, bioprinted, biological renal tubule model comprising:
- a. a layer of renal interstitial tissue, the renal interstitial tissue comprising renal fibroblasts and endothelial cells; and
b. a layer of renal epithelial tissue, the renal epithelial tissue comprising renal tubular epithelial cells, the renal epithelial tissue in contact with the layer of renal interstitial tissue to form the three-dimensional, engineered, biological renal tubule model;
provided that the interstitial tissue comprises an interstitial bio-ink, the epithelial tissue comprises an epithelial bio-ink, and form a three-dimensional, engineered, biological renal tubule model; and
wherein the fibroblasts and endothelial cells are the only cells present in the layer of renal interstitial tissue and are present in a ratio of fibroblasts to endothelial cells at which the renal tubule model is planar six days post-printing.
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Abstract
Disclosed are renal tissues and arrays thereof that include a layer of renal interstitial tissue, the renal interstitial tissue comprising renal fibroblasts and endothelial cells; and a layer of renal epithelial tissue, the renal epithelial tissue comprising renal tubular epithelial cells, the renal epithelial tissue in contact with the layer of renal interstitial tissue to form a three-dimensional, engineered, biological renal tissue. Also disclosed are methods of fabricating and using the same.
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Citations
28 Claims
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1. A three-dimensional, engineered, bioprinted, biological renal tubule model comprising:
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a. a layer of renal interstitial tissue, the renal interstitial tissue comprising renal fibroblasts and endothelial cells; and b. a layer of renal epithelial tissue, the renal epithelial tissue comprising renal tubular epithelial cells, the renal epithelial tissue in contact with the layer of renal interstitial tissue to form the three-dimensional, engineered, biological renal tubule model; provided that the interstitial tissue comprises an interstitial bio-ink, the epithelial tissue comprises an epithelial bio-ink, and form a three-dimensional, engineered, biological renal tubule model; and
wherein the fibroblasts and endothelial cells are the only cells present in the layer of renal interstitial tissue and are present in a ratio of fibroblasts to endothelial cells at which the renal tubule model is planar six days post-printing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A three-dimensional, engineered, bioprinted, biological renal tubule model comprising:
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a. a layer of renal interstitial tissue, the renal interstitial tissue comprising renal fibroblasts and endothelial cells; and b. a monolayer of renal epithelial tissue, the renal epithelial tissue consisting essentially of renal tubular epithelial cells, wherein at least 70% of the layer of renal epithelial tissue is in contact with the apical surface of the layer of renal interstitial tissue to form the three-dimensional, engineered, biological renal tubule model; provided that the interstitial tissue comprises an interstitial bio-ink, the epithelial tissue comprises an epithelial bio-ink, and form a three-dimensional, engineered, biological renal tubule model that is between 50 and 150 μ
m thick; and
wherein the fibroblasts and endothelial cells are the only cells present in the layer of renal interstitial tissue and are present in a ratio of fibroblasts to endothelial cells at which the renal tubule model is planar six days post-printing.
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15. A method of fabricating a three-dimensional, engineered, biological renal tubule model, the method comprising:
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a. preparing a renal interstitial bio-ink, the interstitial bio-ink comprising a plurality of interstitial cell types, the interstitial cell types comprising renal fibroblasts and endothelial cells; b. preparing a renal epithelial bio-ink, the epithelial bio-ink comprising renal tubular epithelial cells; c. depositing the renal interstitial bio-ink and the renal epithelial bio-ink such that the renal epithelial bio-ink forms a layer on at least one surface of the layer of renal interstitial bio-ink; and d. maturing the deposited bio-ink in a cell culture media to allow the cells to cohere to form the three-dimensional, engineered, biological renal tubule model; wherein the fibroblasts and endothelial cells are the only cells present in the layer of renal interstitial tissue and are present in a ratio of fibroblasts to endothelial cells at which the renal tubule model is planar six days post-depositing. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of assessing the renal toxicity of a therapeutic agent, the method comprising:
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a. preparing a renal interstitial bio-ink, the interstitial bio-ink comprising a plurality of interstitial cell types, the interstitial cell types comprising renal fibroblasts and endothelial cells;
preparing a renal epithelial bio-ink, the epithelial bio-ink comprising renal tubular epithelial cells;b. depositing the interstitial bio-ink and the epithelial bio-ink such that the epithelial bio-ink forms a layer on at least one surface of the interstitial bio-ink; and c. maturing the deposited bio-ink in a cell culture media to allow the cells to cohere to form a three-dimensional, engineered, biological renal tubule model; d. contacting a therapeutic agent with the construct; e. measuring viability or functionality of the renal tubular epithelial cells; and f, assessing the renal toxicity of the therapeutic agent based on the measured viability or functionality of the renal tubular epithelial cells wherein the fibroblasts and endothelial cells are the only cells present in the layer of renal interstitial tissue and are present in a ratio of fibroblasts to endothelial cells at which the renal tubule model is planar six days post-depositing.
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Specification