Abstract: Described are systems and methods for multi-material printing. The systems and methods can utilize a stereolithographic printing device, a moving stage, and a microfluidic device. The microfluidic device can include a plurality of reservoirs, each reservoir housing a different ink for printing, and a microfluidic chip. The microfluidic chip can include a chamber that comprises a plurality of inlets, a printing region, and one or more outlets as well as an elastic membrane.

Abstract: Described are systems and methods for multi-material printing. The systems and methods can utilize a stereolithographic printing device, a moving stage, and a microfluidic device. The microfluidic device can include a plurality of reservoirs, each reservoir housing a different ink for printing, and a microfluidic chip. The microfluidic chip can include a chamber that comprises a plurality of inlets, a printing region, and one or more outlets as well as an elastic membrane.

Abstract: A dental tissue regenerative composition. The composition includes a combination of (1) human dental pulp stem cells and (2) at least one of human umbilical vein endothelial cells or vascular endothelial growth factor. The combination is encapsulated in a light-activated gelatin methacrylate hydrogel.

Abstract: A dental tissue regenerative composition. The composition includes a combination of (1) human dental pulp stem cells and (2) at least one of human umbilical vein endothelial cells or vascular endothelial growth factor. The combination is encapsulated in a light-activated gelatin methacrylate hydrogel.

Abstract: Systems and methods of using and imaging shear-thinning biomaterial compositions are provided. More particularly, systems and methods of providing reversible birth control and/or for delivering therapeutics to reproductive organs are provided. A method includes administering a biomaterial into fallopian tubes, uterus, or vas deferens of the subject, where the biomaterial is a shear-thinning nanocomposite.

Abstract: Methods fabricate an endothelialized myocardium usable for screening of a drug. A microfibrous hydrogel scaffold is manufactured with additive manufacturing that concurrently bioprints endothelial cells directly within the microfibrous hydrogel scaffold. A bioink is bioprinted into an arrangement of one or more microfibers. The bioink includes at least one crosslinking component and suspended endothelial cells. The crosslinking component or components are crosslinked to yield the microfibrous hydrogel scaffold having the endothelial cells embedded directly within. The microfibrous hydrogel scaffold is seeded with cardiomyocytes to yield the endothelialized myocardium with a controlled anisotropy. The endothelialized myocardium can be incubated until the endothelialized myocardium matures into spontaneously beating myocardial tissue having contractions aligned with the controlled anisotropy.

Abstract: A bioreactor and methods for use can include a microfibrous scaffold, that can be made of a composite bioink, and that can have endothelial cells directly embedded within the scaffold using an additive manufacturing process. The scaffold can further be seeded with cardiomyocytes. The hydrogel scaffold can be composed of a plurality of serpentine layers, with each serpentine layers, which can be placed on each other in a cross-hatch configuration, so that the primary axes of successive layers are perpendicular. This configuration can establish an aspect ratio for the scaffold, which can be selectively varied. For greater strength, the successive layers that have a primary axis in the same direction can be placed in the scaffold so that they are slight offset from each other. The scaffold can be placed in the bioreactor with perfusion, for use in cardiovascular drug screening and other nanomedicine endeavors.

Abstract: A dental tissue regenerative composition. The composition includes a combination of (1) human dental pulp stem cells and (2) at least one of human umbilical vein endothelial cells or vascular endothelial growth factor. The combination is encapsulated in a light-activated gelatin methacrylate hydrogel.

Abstract: A dental tissue regenerative composition. The composition includes a combination of (1) human dental pulp stem cells and (2) at least one of human umbilical vein endothelial cells or vascular endothelial growth factor. The combination is encapsulated in a light-activated gelatin methacrylate hydrogel.

Abstract: The present invention provides compositions and methods for repair and reconstruction of defects and injuries to the cornea.

Abstract: The present application relates to shear thinning hydrogel compositions which are useful for reducing and/or preventing tissue adhesion in a subject (e.g., a post-operative subject). Methods of using the compositions and kits comprising the compositions oar also provided.

Abstract: The present invention provides compositions and methods for repair and reconstruction of defects and injuries to the cornea.

Abstract: The present invention provides an improved tissue adhesive to repair defects in soft tissue. Following ASTM standard tests, crosslinked methacryloyl-substituted gelatin hydrogels of the present invention (GelSEAL) were shown to exhibit adhesive properties, i.e. wound closure strength, shear resistance and burst pressure, that were superior to clinically used fibrin- and poly(ethylene glycol)-based glues. Chronic in vivo experiments in rats proved GelSEAL to effectively seal large lung leakages without additional sutures or staples, presenting improved performance as compared to fibrin and poly(ethylene glycol) glues. Furthermore, subcutaneous implantation in rats revealed high biocompatibility of GelSEAL as evidenced by low inflammatory host response.

Abstract: The present invention provides an improved tissue adhesive to repair defects in soft tissue. Following ASTM standard tests, crosslinked methacryloyl-substituted gelatin hydrogels of the present invention (GelSEAL) were shown to exhibit adhesive properties, i.e. wound closure strength, shear resistance and burst pressure, that were superior to clinically used fibrin- and poly(ethylene glycol)-based glues. Chronic in vivo experiments in rats proved GelSEAL to effectively seal large lung leakages without additional sutures or staples, presenting improved performance as compared to fibrin and poly(ethylene glycol) glues. Furthermore, subcutaneous implantation in rats revealed high biocompatibility of GelSEAL as evidenced by low inflammatory host response.

Abstract: Described are systems and methods for in vivo multi-material bioprinting. The in vivo multi-material bioprinting can be used to fabricate biomedical constructs within a patient minimally invasively. The systems and methods can utilize a multi-material bioprinter, which includes a biocompatible portion. The biocompatible portion can include a single printhead for in vivo bioprinting. The single printhead can include a plurality of outlets, each linked to one of a plurality of reservoirs. Each of the plurality of reservoirs can each house a different bioink for bioprinting. Each of the plurality of outlets can be activated to release a respective bioink.

Abstract: A dental tissue regenerative composition. The composition includes a combination of (1) human dental pulp stem cells and (2) at least one of human umbilical vein endothelial cells or vascular endothelial growth factor. The combination is encapsulated in a light-activated gelatin methacrylate hydrogel.

Abstract: Disclosed herein are polypeptides comprising an amino acid sequence of {[VPGVG]4IPGVG}n, wherein n is an integer greater than 1. The polypeptides can be crosslinked to from biocompatible hydrogels with tunable and desirable mechanical properties. The polypeptides and hydrogels can be used in a variety of biomedical applications including treatment of bleeding, treatment of soft tissue injury, injectable filler, and tissue adhesives.

Abstract: Described are systems and methods for multi-material printing. The systems and methods can utilize a stereolithographic printing device, a moving stage, and a microfluidic device. The microfluidic device can include a plurality of reservoirs, each reservoir housing a different ink for printing, and a microfluidic chip. The microfluidic chip can include a chamber that comprises a plurality of inlets, a printing region, and one or more outlets as well as an elastic membrane.

Abstract: A bioreactor and methods for use can include a microfibrous scaffold, that can be made of a composite bioink, and that can have endothelial cells directly embedded within the scaffold using an additive manufacturing process. The scaffold can further be seeded with cardiomyocytes. The hydrogel scaffold can be composed of a plurality of serpentine layers, with each serpentine layers, which can be placed on each other in a cross-hatch configuration, so that the primary axes of successive layers are perpendicular. This configuration can establish an aspect ratio for the scaffold, which can be selectively varied. For greater strength, the successive layers that have a primary axis in the same direction can be placed in the scaffold so that they are slight offset from each other. The scaffold can be placed in the bioreactor with perfusion, for use in cardiovascular drug screening and other nanomedicine endeavors.

Abstract: The present invention provides compositions and methods for repair and reconstruction of defects and injuries to the cornea.