2012 April Shiseido Develops New Anti-Aging Skincare Technology that Enhances Skin’s Self-Restoring Capabilities using Dermal Stem Cells Using the results of research on dermal stem cells*1, which facilitate the skin’s self-restoring process, Shiseido has successfully developed new anti-aging skincare technology. This technology prevents and improves sagging and deep wrinkles, and counteracts age-related decline in skin’s elasticity and resilience caused by the progressive aging of the dermis. To achieve this effect, skin’s regenerative and repair capabilities must be enhanced. While skin’s fibroblasts produce the components of the dermis, it is the dermal stem cells that increase dermal regenerative and repair capabilities. Shiseido’s research shows that stem cells hold the key to skin’s self-restoring abilities. (Figures 1, 2) Here are Four Findings from Shiseido’s Dermal Stem Cell research: (1) Dermal stem cells, which differentiate, can only exist stably in areas around blood vessels (Figure 3) (2) A platelet-derived growth factor (PDGF-BB*2) is required in order to enable dermal stem cells to exist stably around blood vessels. (Figure 4) (3) Dermal stem cells and PDGF-BB decrease with age. (Figure 5) (4) Inositol*3 increases the generation of PDGF-BB. (Figure 6) These findings will be applied in the development of new anti-aging skincare products (in Japan and overseas) formulated to enhance the skin’s self-restoring process—strengthening regenerative and repair capabilities induced by dermal stem cells—while preventing and improving sagging, loss of elasticity and deep wrinkles. Additionally, a portion of these research results will be presented at the 75th Annual Meeting of the Society for Investigative Dermatology, which will convene from May 9 to 12 in the United States. The Society for Investigative Dermatology is one of the world’s leading research societies related to dermatology. *1 Dermal stem cells are mesenchymal stem cells existing in the dermis that differentiate into fibroblasts. Since mesenchymal stem cells are initially differentiated from bone marrow and are capable of producing various tissues, they are drawing attention in regenerative medicine and are the closest to reaching the clinical application stage. *2 PDGF-BB is a growth factor derived from blood platelets. Growth factor is the collective term for in vivo substances that promote the growth or differentiation of cells. *3 Inositol is a type of vitamin B that is largely contained in items such as plant seeds and grain crops. It is known to play a major role in the metabolism of fats and cholesterol. 1 The Current State of Stem Cell Research Stem cells are capable of producing various other types of cells. Stem cells work to maintain a body’s health, or to heal scarring through their differentiation ability. In recent years, research on regenerative medicine to repair organs and tissues damaged by disease or trauma has been actively pursued in the medical field. Although the application of stem cell research and knowledge has also been promoted in the cosmetics field, these efforts are mostly limited to the development of artificial stem cells from plant cells, and the process of combining them, which can be done relatively simply. While research on skin stem cells is also being done, it is related to epidermal stem cells (which only generate keratinocytes found on the surface of the skin) or it is focused on identifying the presence of dermal stem cells. Until Shiseido’s research, here had been no in-depth research on dermal stem cells from the perspective of enhancing the skin’s self-restoring power by increasing the regenerative and repair capabilities of the dermis. This research, begun in 2004, will lead to new solutions for anti-aging skin care. New Anti-Aging Skincare Technology Enhances Skin’s Self-Restoring Capabilities The skin concerns that arise for most women as they age are sagging, loss of elasticity and deep wrinkles caused by changes in the skin’s configuration. These changes occur with the decline of collagen, elastin and hyaluronic acid—the main structural components of skin’s elasticity and resilience. Consequently, in order to maintain youthful skin with elasticity and resilience, skin’s capacity for self-restoring needs to increase, and that means the regenerative and reparative capabilities of the dermis need to increase as well. Based on the four new findings listed previously, and the discovery of Inositol as a new substance for promoting the production of the growth factor PDGF-BB (which declines due to aging) Shiseido succeeded in creating new anti-aging skincare technology that improves the skin’s self-restoring power by enhancing the regenerative and repair capabilities of the dermis. 2 Dermal stem cells differentiation differentiation Epidermal stem cells production Fibroblasts Pericytes etc. differentiation Epidermal cells Collagen Elastin Hyaluronic acid × Figure 1: Difference in functions of dermal stem cells and epidermal stem cells (Tentative image) In vitro culture of dermal stem cells Fibroblastic cells (type I collagen positive) Dissociation Culture dermal stem cells (Immunofluorescence image ) Colony forming ability of dermal stem cells Figure 2: Differentiation of dermal stem cells into fibroblasts Nucleus Dermal stem cells Blood vessels Dermal stem cells Nucleus Blood vessels Figure 3: Perivascular localization of dermal stem cells 3 Blood vessels ** Colony forming ability of derma stem cells PDGF-BB Nucleus minus plus PDGF-BB Number of dermal stem cells Figure 4: PFGF-BB, which enhances the function of dermal stem cells 20 30 40 50 60 70 80 90 20 30 40 50 60 70 80 90 age age Figure 5: Dermal stem cells and PFGF-BB that decline due to aging • A type of Vitamin B that is largely found in plant seeds and grains • Naturally exists in the human body and is important in metabolizing fat and cholesterol. minus plus Inositol Figure 6: Inositol, which increases the production of PFGF-BB 4