Growth factors and synthetic peptides in tissue regeneration

Tissue regeneration research draws on two overlapping classes of signalling molecule: the endogenous growth factors that cells use to coordinate repair, and synthetic peptides designed to mimic, fragment or extend those signals. Comparing the two helps clarify what each can and cannot tell us in the laboratory.

Endogenous growth factors

Factors such as FGF2, the TGF-β family (including Activin A and the BMPs), VEGF and the IGF axis are central to development and repair. They act through well-mapped receptor pathways and remain the backbone of most differentiation protocols. Their behaviour in stem cell research – for example in directing pluripotent cells toward defined lineages – is one of the better-understood areas of the field, as illustrated by work like the axolotl pluripotency studies reported through the network.

Synthetic signalling peptides

Synthetic peptides offer defined, scalable alternatives to full-length proteins. Short sequences can reproduce a functional motif of a larger factor, act as receptor agonists or antagonists, or serve as research probes for a pathway. Because they are chemically defined, batch consistency and purity are comparatively straightforward to verify – an advantage for reproducible research, provided the material is properly characterised.

Choosing between them

The choice is driven by the question. Mechanistic studies of native signalling usually call for recombinant growth factors; screening, probe and tool-compound work often favours synthetic peptides. For background on the peptides used as research tools, see signalling peptides in stem cell research and our broader laboratory resources.

For research use only.

« Back to research resources