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Fibroblast regeneration holds key to anti-ageing skin care development

By Andrew McDougall+

13-Dec-2013

Scientists in the UK have identified the unique properties of two different types of skin cell that could pave the way for treatments aimed at reducing the impact of ageing on skin function and repair injured skin.

Fibroblasts are a type of cell found in the connective tissue of the body's organs, where they produce proteins such as collagen.

The team at King's College London have for the first time identified the two different fibroblasts; a big discovery as it is widely believed that all fibroblasts are the same cell type.

Two types

The study at King's, published in Nature, indicates that there are at least two distinct types of fibroblasts in the skin: those in the upper layer of connective tissue, which are required for the formation of hair follicles and those in the lower layer, which are responsible for making the most of the skin's collagen fibres and for the initial wave of repair of damaged skin.

“Changes to the thickness and composition of the skin as we age mean that older skin is more prone to injury and takes longer to heal,” says Professor Fiona Watt, lead author and Director of the Centre for Stem Cells and Regenerative Medicine at King's College London.

“It is possible that this reflects a loss of upper dermal fibroblasts and therefore it may be possible to restore the skin's elasticity by finding ways to stimulate those cells to grow. Such an approach might also stimulate hair growth and reduce scarring.”

Watt’s team found that the quantity of these fibroblasts can be increased by signals from the overlying epidermis and that an increase in fibroblasts in the upper layer of the skin results in hair follicles forming during wound healing.

Treatments

This could potentially lead to treatments aimed at reducing scarring and the impact of ageing, she says.

“Although an early study, our research sheds further light on the complex architecture of the skin and the mechanisms triggered in response to skin wounds,” continues Watt.

“The potential to enhance the skin's response to injury and ageing is hugely exciting. However, clinical trials are required to examine the effectiveness of injecting different types of fibroblasts into the skin of humans.”

Dr Paul Colville-Nash, Programme Manager for Regenerative Medicine at the MRC, says that these findings are an important step in the understanding of how the skin repairs itself following injury and how that process becomes less efficient as we age.

The insights gleaned from this work will have wide-reaching implications in the area of tissue regeneration and skin care.

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