A frame for constructing nerve tract is provided, including microcatheters, a support, and a shell. The shell is configured to contain a culture medium inside. The microcatheters are configured to culture nerve cells. The multiple microcatheters are suspended and fixed into the shell by the support, the microcatheters are arranged along a direction from one end to the other end of the shell, catheter walls of the microcatheters are provided with through holes, the nerve cells in the microcatheter cannot flow out through the through holes, and the culture medium enters the microcatheter through the through holes. A method for constructing nerve tract based on the frame described is provided, including: filling the nerve cells wrapped with a collagen hydrogel stock solution into the microcatheters, and after the collagen hydrogel stock solution is completely cross-linked, placing the frame loaded with the nerve cells in a culture device for perfusion culture.

The substrates, systems, and methods described herein relate to textured substrates for preparing a comestible meat product. Substrates and methods are described herein for controlling one or more of growth, adhesion, retention, and/or release of cells (e.g., of a cell sheet) on or from the surface of the substrate. A method of preparing a comestible meat product may include applying a plurality of non-human cells to at least one patterned texture substrate, growing the cells on the patterned texture substrate to form the comestible meat product, and separating the comestible meat product from the patterned texture substrate. The patterned texture allows for improved growth, adhesion, retention, and/or release of cells as compared to another surface not comprising the patterned texture. In some embodiments, the cell culture substrate surfaces include a plurality of regions corresponding to a plurality of patterned textures.

A microtopography system for modulating one or more cellular processes on a surface is described. The microtopography system comprising: a repeated microtopographic pattern, said microtopographic pattern comprising: an array of repeated micropillars applied to a surface of a product, said micropillars being formed of surface structures between 1-100 μm in height, and 1-50 μm in width. The microtopographic pattern acts to modulate one or more cellular processes on the surface.

Provided herein are a scaffold having a surface hyperboloid structure and its fabrication method and application. The scaffold has internally disposed with pores where each of the pores connects with each other and any point on a surface of each of the pores has the hyperboloid structure. Since the surface of the scaffold is smooth and stress concentration is thereby avoided, the scaffold can withstand a greater external force in the case of the same porosity. Moreover, since the pores inside the scaffold connect with each other, the scaffold has a better permeability to fluid and is more conducive to tissue ingrowth. In addition, the scaffold has a large internal surface area, rendering it feasible to subsequent surface treatment, such as film coating, to be carried out on the internal surface of the scaffold.

A method for generating a population of cardiomyocytes from induced pluripotent stem cells (iPSCs) in an integrated process. The method may comprise seeding the iPSCs on a modified surface of a modified cell culture substrate, culturing the seeded iPSCs on the modified surface of the modified cell culture substrate in an animal component-free culture medium, and differentiating the cultured iPSCs to the population of cardiomyocytes on the modified surface of the modified cell culture substrate. The modified cell culture substrate may comprise a patterned polydimethylsiloxane (PDMS) substrate, a first coating comprising a plurality of polydopamine molecules, and a second coating comprising a plurality of Laminin 511 E8 Fragment (LME8) molecules.

Provided is a cell culture substrate for trait induction control of a macrophage, which has a pattern of unevenness on a surface to which a cell adheres, the width of the unevenness being 50 nm or more and less than 1,000 nm.

Provided is a cell culture substrate for trait induction of a nerve cell, which has a pattern of unevenness on a surface to which a cell adheres, the width of the unevenness being 50 nm or more and 1,000 nm or less.

A trait induction method of undifferentiated cells is provided, including: culturing undifferentiated cells on abase material which has an uneven pattern on the surface to which the cells adhere and of which the width of the unevenness is 1 nm to 1,000 nm.

A two-dimensional lattice or mesh scaffold for therapeutic cell implants is disclosed as well as methods for manufacture and use. The lattice is constructed of crisscrossing capillaries of hydrophobic parylene, such as parylene AF4, that may be coated with a hydrophilic polymer, such as parylene C, for cell adhesion. At each intersection of the crisscross, the intersecting capillaries are internally connected so as to allow oxygen to flow freely within. The walls of the capillaries are thin enough to be permeable to oxygen, on the scale of a micron thick, so that oxygen can flow through the lattice and permeate through the capillary walls. For some implants, cells are sandwiched between two or more lattices, the cells being slightly held apart from aggregation with each other by the lattice holes. The implants may then be surgically implanted within a subject.

A construct that supports cell attachment and alignment including a substrate that is incompatible with photolithography conditions, containing a physical pattern in at least part of one surface, the physical pattern optionally bearing a coating of a metal alkoxide, oxide or mixed oxide-alkoxide thereon and a Self-Assembled Monolayer of Phosphonate (SAMP) covalently attached thereto, which phosphonate contains functionality adapted for cell binding. The construct optionally also contains cells attached thereto. Also disclosed are methods of preparing such a construct.