Disclosed are recombinant extracellular vesicles (EVs), compositions including modified EVs encapsulated in a matrix, methods for controlling the release of EVs from an encapsulating matrix, and methods of using the same in the treatment of disease.

Covalently modified alginate polymers, possessing enhanced biocompatibility and tailored physiochemical properties, as well as methods of making and use thereof, are disclosed herein. The covalently modified alginates are useful as a matrix for coating of any material where reduced fibrosis is desired, such as encapsulated cells for transplantation and medical devices implanted or used in the body.

There is provided a tubular vitrigel composed of a laminate in which a plurality of plate-like vitrigels each having a through-hole are laminated in a thickness direction so that the through-holes are continuous.

Embodiments of the present disclosure generally relate to compositions that include hydrogel-encapsulated/dispersed cells, compositions including hydrogel-encapsulated/dispersed cells, and to processes for forming such hydrogel-encapsulated/dispersed cells and compositions thereof. The compositions can be used for, e.g., therapeutic applications. In some examples, the hydrogel-encapsulated/dispersed cells are formed using photoreactive groups chemically attached to polyethylene glycol to form a material which, upon exposure to a desired wavelength or wavelength range of light, reacts to form a cross-linked hydrogel network.

A composition for regeneration of skeletal muscle includes a nerve cell secretome or an isolate thereof. An implantable therapeutic material for regeneration of skeletal muscle includes a hydrogel and nerve cells encapsulated within the hydrogel, wherein at least some of the nerve cells are living. A method of regenerating skeletal muscle includes applying the composition or implanting the implantable material adjacent to skeletal muscle myoblasts and/or myogenic cells to regenerate skeletal muscle therefrom.

Provided are polysaccharide compositions capable of controllable hydrolytic degradation and suitable for controlled release of therapeutic agents. Also provided are methods for synthesizing such compositions and a variety of applications in which the compositions may be used.

Disclosed herein is a use of a composition, comprising a non-toxic polyanionic material or a salt thereof to dissociate a polymeric membrane. In addition, a method of dissociating a polymeric membrane is also presented, the method comprising the steps of providing a polymeric membrane; and dissociating the polymeric membrane by adding a composition comprising a non-toxic polyanionic material to the polymeric membrane.

The technology relates to a 3D printed hydrogel formed from a maleimide containing polymer cross-linked using a bis-thiol containing cross-linking agent having at least two thiol functional groups, processes for preparing the 3D printed hydrogel, and uses thereof.

Provided herein are methods and systems for forming a three-dimensional object corresponding to an organ or organoid. A method for forming a three-dimensional object corresponding to an organ or organoid may comprise generating a plurality of discrete focal points patterned as a 3D projection corresponding to the organ or organoid in a medium comprising one or more precursors of a polymer, to form at least a portion of the 3D object corresponding to the organ or organoid.

Methods and devices for facilitating post-resection tissue formation to accelerate healing are provided. A hydrogel scaffold with encapsulated cells may be prepared. The encapsulated cells may be cells of the patient undergoing the resection that correspond to a type of the tissue resected. The hydrogel scaffold may be integrated with a frame to form an implantable device for insertion into a cavity created by the resection. The hydrogel scaffold and the frame may be bioabsorbable, and the frame may include non-bioabsorbable, radiopaque markers spaced along the frame. Upon insertion of the implantable device into the cavity, the encapsulated cells may interact with native cells to facilitate new tissue formation within the hydrogel scaffold and other areas of the cavity, the frame may provide temporary structural support for the cavity to reduce deformations as new tissue is being formed, and the markers may enable identification of the resection site.