Tissue Engineering Scaffold

Seeding density 50%

Growth-factor conc. 50%

Scaffold porosity 55%

Confluence

Cells

Growth rate

0.0 cells/s

How it works

Tissue engineering seeds living cells onto a porous biocompatible scaffold; cells attach, proliferate and secrete extracellular matrix, gradually filling the scaffold's pores — "confluence" — before it can be implanted or matured further in a bioreactor.

Porosity is a trade-off: a more porous scaffold has wider, better-connected channels so nutrients and oxygen diffuse deeper into the construct and cells migrate more freely — but the thinner, sparser struts leave it mechanically weaker and more prone to collapsing under load. Growth factors are signalling proteins (e.g. VEGF, TGF-β, FGF) added to the culture medium that bind cell-surface receptors and accelerate proliferation and matrix production without changing how many cells were seeded initially.

Seeding density — how many cells are attached to the scaffold at the start.
Growth-factor concentration — how quickly seeded cells proliferate over time.
Scaffold porosity — how open/sparse the lattice struts are, trading strength for diffusion.

This mirrors real regenerative-medicine work such as growing cartilage patches for joint repair or lab-grown skin grafts for burn victims, where scaffold pore size and growth-factor dosing are tuned to balance strength, nutrient supply and how fast the tissue matures.

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