Alginate Dialdehyde-Collagen Hydrogels and Their Use in 3d Cell Culture

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent introduces a hydrogel system composed of alginate dialdehyde (ADA) and collagen that are covalently cross-linked to form a three-dimensional (3D) matrix. The hydrogel can be precisely tailored in its physical and chemical properties, such as stiffness and porosity, and is designed to support the growth and 3D culture of a wide range of cells, especially neuronal cells. The innovation provides a method for making this hydrogel and its application in advanced cell culture, bioprinting, drug screening, and disease modeling.

Use CasesContent extracted from patent full text and abstract with AI.

• 3D in vitro cell culture platforms for studying cell behavior and interaction in a realistic environment.
• Culturing plant, animal, or human neuronal cells to study nervous system development and diseases.
• Drug screening and evaluation, particularly for neurodegenerative diseases like Alzheimer's.
• Creating in vitro tumor models for cancer research and drug testing.
• Serving as bio-inks for 3D bioprinting of tissues or organoids.
• Developing tissue engineering scaffolds for regenerative medicine applications.
• Lab-on-a-chip devices for diagnostics, analytics, or personalized medicine.

BenefitsContent extracted from patent full text and abstract with AI.

• Provides a highly controllable and reproducible 3D cell culture environment.
• Mechanical and chemical properties (stiffness, porosity, degradability) can be precisely adjusted to mimic various tissues.
• Supports diverse cell types, including neuronal, bone, stem, muscle, cartilage, vascular, and cancer cells.
• Improves modeling of complex cell interactions and tissue structures compared to conventional 2D or non-optimized 3D matrices.
• Reduces batch-to-batch variability compared to natural products like Matrigel.
• Enables efficient nutrient and oxygen diffusion for long-term cell survival and development.
• Lower cost than existing commercial 3D matrices like Matrigel.
• Ethically advantageous by supporting replacement and reduction of animal testing ('three Rs').
• Facilitates the self-organization and physiological behavior of cells in 3D, closely resembling natural tissues.

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Patent Abstract

The present invention relates to a method of generating a hydrogel comprising alginate dialdehyde (ADA) and collagen, which are covalently cross-linked, and optionally, further component(s), and to uses of such hydrogel. The present invention further relates to using the hydrogel for culturing cells, in particular neuronal cells, and for further uses, such as 3D bioprinting. The present invention furthermore relates to a cell culture system comprising a hydrogel of alginate dialdehyde (ADA) and collagen, which are covalently cross-linked, and, optionally, further components. Furthermore, the present invention relates to a method of generating a three-dimensional (3D) cell culture using a hydrogel according to the invention.