What is the primary purpose of scaffolds in tissue engineering?

The primary purpose of scaffolds in tissue engineering is to provide structure for cell attachment and growth. Scaffolds are designed to mimic the extracellular matrix (ECM) of natural tissues, creating a conducive environment for cells to adhere, proliferate, and differentiate. This structural support is crucial for forming new tissue, as it helps maintain the shape and mechanical properties necessary for the tissue to function properly.

Scaffolds are typically made from biocompatible materials that allow cells to infiltrate and eventually occupy the scaffold, leading to tissue regeneration. They facilitate not only the physical support but also the signaling required for cellular activities, thereby promoting tissue healing and integration.

By contrast, other options do not accurately capture the primary role of scaffolds. While scaffolds may indirectly influence nutrient flow and support cellular metabolism, their fundamental design and purpose focus on providing a scaffold-like structure essential for cell growth and organization into functional tissue.