The ability to replace, instead of simply repairing, damaged skin cells is becoming more of a possibility with the advancements in plant stem cell technology. Scientific research supports the use of certain plant stem cell extracts, but further research may be needed to support the efficacy of others.
At this time, much of the research focuses on the photoprotective properties of dietary botanicals, citing the potential of topical products that use plant extracts with the same characteristics. Keeping abreast of plant-derived stem cell research as it evolves is essential for making optimal treatment choices as plant stem cell technology is incorporated into anti-aging skin care.
Skin Stem Cells
Before considering the addition of stem cells into cosmeceuticals, it is critical to understand the role of stem cells in the skin. The majority of skin stem cells reside in the basal layer of the epidermis. Their primary function is to replenish the skin as it undergoes normal homeostatis and wound repair.1 Like all stem cells, those in the epidermis are undifferentiated and capable of dividing themselves for extended periods of time and differentiating into multiple data suggests that the loss of a stem cell in lineages based on their tissue origin.1,2 When a stem cell divides, the daughter cells have the potential to either remain a stem cell, like the parent cell, or they can differentiate into cells with a more specialized function known as progenitor cells. After these progenies experience several rapid divisions in the basal layer, they cease dividing and travel through the suprabasal layers to the tissue surface. Once there, they progressively differentiate, switching from expression of one set of keratins to another. Eventually their nuclei degener- ate, producing an outer layer of dead keratinized cells that are shed. Stem cells continuously renew the epidermis, with a turnover time of approximately 1 month.2 Epidermal stem cells also are stored in a microenvironment called the bulge, which is located at the base of the hair follicle. They remain dormant there until recruited by neighboring cells to help repair the skin. The stem cell’s characteristics are determined by the epigenetic signal it receives. The existence of several distinct, highly compartmentalized stem cell populations have been reported in the literature3,4 The data suggests that the loss of a stem cell in one structural unit is quickly replaced by stem cells in the adjacent unit, which demonstrates the multipotential nature and developmental flexibility of skin cells. #Regenere3D
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