Abstract: An adenovirus expression vector is provided. The adenovirus expression vector may include: a) one or more mutations that render the adenovirus replication incompetent and b) at least one nucleotide sequence encoding a protein or an RNA is provided. A method of synthesizing an adenovirus vector is also provided. The synthesis may include: a) producing a plurality of overlapping adenovirus sub-fragments, each sub-fragment comprising a portion of the full genome of the adenovirus; b) circularizing the sub-fragments to form plasmid structures; and c) assembling the circularized sub-fragments into a linear structure, wherein the vector comprises a combination of two or more sub-fragments. A mammalian cell line configured to replicate adenoviral vectors, wherein the cell line comprises nucleotide sequences expressing E1A and E1B gene products but is devoid of other adenovirus sequences is also provided.

Abstract: An adenovirus expression vector is provided. The adenovirus expression vector may include: a) one or more mutations that render the adenovirus replication incompetent and b) at least one nucleotide sequence encoding a protein or an RNA is provided. A method of synthesizing an adenovirus vector is also provided. The synthesis may include: a) producing a plurality of overlapping adenovirus sub-fragments, each sub-fragment comprising a portion of the full genome of the adenovirus; b) circularizing the sub-fragments to form plasmid structures; and c) assembling the circularized sub-fragments into a linear structure, wherein the vector comprises a combination of two or more sub-fragments. A mammalian cell line configured to replicate adenoviral vectors, wherein the cell line comprises nucleotide sequences expressing E1A and E1B gene products but is devoid of other adenovirus sequences is also provided.

Abstract: A three-dimensional (3D) printing apparatus is configured to manufacture a 3D article in a layer-layer manner. The 3D printing apparatus includes a projector configured to selectively irradiate a photosensitive apparatus along a horizontal build plane defined along X and Y axes. The projector is coupled to a lateral movement mechanism configured to laterally scan the projector along X? and Y? axial movement coordinates. The X? and Y? axial movement coordinates are not exactly aligned with the X and Y axes respectively. For individual layers of the 3D article, the projector is configured to irradiate a sequence of adjacent pixelated tiles within the build plane. Before irradiating the sequence of tiles, the projector is configured to operate a camera and to align leading and trailing edges of the tiles along each of X? and Y?.

Abstract: The present disclosure relates generally to, among other things, methods and compositions (e.g., culture media) for culturing iPS cells, such as iPS-endothelial cells (IPS-ECs). The present disclosure also provides iPS-EC cultures comprising iPS-ECs and a culture medium.

Abstract: Modular synthetic receptors are provided. The synthetic receptors may include an extracellular domain capable of binding to one or more ligand molecules and may be released from the synthetic receptor after binding, a transmembrane domain derived from the Notch receptor, and an intracellular domain which may have one or more functional activities when released from the synthetic receptor. A method of use for the synthetic receptors is also provided, wherein upon binding of the extracellular domain to a specific ligand, the synthetic receptor undergoes proteolytic cleavage to release either or both the extracellular and intracellular domains. The extracellular binding domain, if released, may continue to bind to its cognate ligand and may carry one or more additional functional activities and the intracellular domain, if released, may stimulate or inhibit one or more intracellular activities.

Abstract: A method of modifying a surface of a three-dimensional (3D) article includes immersing at least one part of the 3D article in a buffered solution of functionalized peptides, allowing reaction between the functionalized peptides and reactive groups on the surface of the 3D article; and washing the at least one part of the 3D article to remove unreacted functionalized peptides. The surface-modified 3D article includes a plurality of peptides covalently bonded to the surface of the 3D article via a cysteine bridge. The surface-modified 3D article can be used as a scaffold for the formation of biological tissue or bodily implants.

Abstract: A method of printing a hydrogel scaffold is provided which includes providing a container containing an ink and a liquid that is immiscible with the ink; applying light from a light source to the ink to form a portion of the hydrogel scaffold; and applying light from a light source one or more additional times to produce one or more additional portions of the hydrogel scaffold.

Abstract: Provided herein are methods which alter the mechanical and biological properties of polymeric materials. Also provided are compositions comprising the polymeric materials having said properties.

Abstract: Modular synthetic receptors are provided. The synthetic receptors may include an extracellular domain capable of binding to one or more ligand molecules and may be released from the synthetic receptor after binding, a transmembrane domain derived from the Notch receptor, and an intracellular domain which may have one or more functional activities when released from the synthetic receptor. A method of use for the synthetic receptors is also provided, wherein upon binding of the extracellular domain to a specific ligand, the synthetic receptor undergoes proteolytic cleavage to release either or both the extracellular and intracellular domains. The extracellular binding domain, if released, may continue to bind to its cognate ligand and may carry one or more additional functional activities and the intracellular domain, if released, may stimulate or inhibit one or more intracellular activities.

Abstract: Provided herein are methods which alter the mechanical and biological properties of polymeric materials. Also provided are compositions comprising the polymeric materials having said properties.

Abstract: A method of manufacturing a three-dimensional (3D) article includes operating a print engine to fabricate a composite structure including the 3D article coupled to a support structure, removing the composite structure from the fluid tank, and peeling the inside surface of the sheath away from the outer surface of the article, peeling progressively breaks the plurality of strands. The support structure includes a conformal sheath having an inside surface that follows the outer surface of the 3D article with a gap between the inside surface of the sheath and the outer surface of the article, and a plurality of strands that span the gap and individually have opposed ends that are coupled to the inside surface of the sheath and the outer surface of the article to maintain the gap, the gap filled with the photocurable liquid ink.

Abstract: An advanced manufactured interpenetrating polymer network (AM-IPN) comprising: a primary polymer network; a secondary polymer network, wherein the secondary polymer network is bonded to the primary polymer network via one or more crosslinks, wherein one or more of the primary polymer network, the secondary polymer network and the one or more crosslinks are printed using a synthetic bioink is disclosed. Methods of making and using are also disclosed.

Abstract: An advanced manufactured transwell (AM-transwell), the AM-transwell comprises: a lower chamber; an upper chamber; a membrane disposed between the lower chamber and the upper chamber; and one or more legs. The one or more legs form at least a portion of the lower chamber. One or more of the lower chambers, the upper chamber, the membrane and the one or more legs is printed using a synthetic bioink. Methods for making and using the AM-transwell are also disclosed.

Abstract: A platform form an apparatus for printing a 3D model comprises a base and a print layer. The base has a first side where the first side of the base has a first surface roughness thereon. The print layer is coupled first side of the base and includes a surface. The surface of the print layer is distal from the base and has a second surface roughness which is greater than the first surface roughness so as to promote adhesion of the 3D model being printed on the platform.

Abstract: A printable composition for the manufacture of cell-receiving scaffolds comprising about 0.3 wt % to about 3.0 wt % of one or more collagens; about 5.0 wt % to about 40.0 wt % of one or more monomers; about 0.5 wt % to about 2.0 wt % of a photo initiator; and 0 wt % to about 75 wt % of a vehicle comprising a protic solvent, by weight of the printable composition; wherein the printable composition has a resolution of about 100 microns or less when printed, a photo speed (Dp/Ec) of about 0.1-5 mm (Dp) and about 10-100 mJ/cm2 (Ec) when printed, and a green strength of at least about 5 kPa after drying. The present technology further includes methods of manufacturing a three-dimensional cell-receiving scaffold using the printable composition.

Abstract: An apparatus can include a triply periodic minimal surface. The apparatus can include a 3D scaffold formed from the triply periodic minimal surface. The apparatus can include one or more channels formed by the 3D scaffold. A method of forming a gas exchange unit can include printing a 3D scaffold formed from a triply periodic minimal surface. The 3D scaffold can include a vascular network configured to conduct a fluid. The 3D scaffold can include one or more channels configured to hold a gas. The vascular network can be embedded inside walls of the 3D scaffold. The one or more channels can be positioned between the walls of the 3D scaffold.

Abstract: A method of printing a hydrogel scaffold is provided which includes providing a container containing an ink and a liquid that is immiscible with the ink; applying light from a light source to the ink to form a portion of the hydrogel scaffold; and from a light source one or more additional times to produce one or more additional portions of the hydrogel scaffold.

Abstract: A printable composition for the manufacture of cell-receiving scaffolds comprising about 0.3 wt % to about 3.0 wt % of one or more collagens; about 5.0 wt % to about 40.0 wt % of one or more monomers; about 0.5 wt % to about 2.0 wt % of a photo initiator; and 0 wt % to about 75 wt % of a vehicle comprising a protic solvent, by weight of the printable composition; wherein the printable composition has a resolution of about 100 microns or less when printed, a photo speed (Dp/Ec) of about 0.1-5 mm (Dp) and about 10-100 mJ/cm2 (Ec) when printed, and a green strength of at least about 5 kPa after drying. The present technology further includes methods of manufacturing a three-dimensional cell-receiving scaffold using the printable composition.

Abstract: Embodiments of this disclosure relate to bioinks and bioink compositions. These bioinks may be 3D printed into a hydrogel. The printed hydrogel may support primary cell and induced pluripotent stem cell attachment, proliferation, and spreading. Compounds in the bioink may be modified to incorporate chemical functionality, such as by chemical synthesis means. Incorporating chemical functionality may allow the incorporation of modified material as a component in the bioink. The modifications may allow chemical conjugation of a desired component. The desired component may maintain its cell interactive feature to aid in cell attachment and proliferation. Such incorporation may allow modulation of the bioprinted object's mechanical properties without interfering with cell adhesion.

Abstract: Provided herein are methods which alter the mechanical and biological properties of polymeric materials. Also provided are compositions comprising the polymeric materials having said properties.