ヤマニシ　ハルヨ   Haruyo Yamanishi   山西　治代    所属   川崎医科大学  医学部 基礎医学　解剖学    職種   講師
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Perivascular localization of dermal stem cells in human scalp.
掲載誌名	正式名：Experimental dermatology ISSNコード：16000625/09066705
掲載区分	国外
巻・号・頁	21,pp.78-80
著者・共著者	Yamanishi H, Fujiwara S, Soma T
発行年月	2012/01
概要	In mammalian skin, the existence of stem cells in the dermis is still poorly understood. Previous studies have indicated that mesenchymal stem cells (MSCs) are situated as pericytes in various mammalian tissues. We speculated that the human adult dermis also contains MSC-like cells positive for CD34 at perivascular sites similar to adipose tissue. At first, stromal cells from adult scalp skin tissues showed colony-forming ability and differentiated into mesenchymal lineages (osteogenic, chondrogenic and adipogenic). Three-dimensional analysis of scalp skin with a confocal microscope clearly demonstrated that perivascular cells were positive for not only NG2, but also CD34, immunoreactivity. Perivascular CD34-positive cells were abundant around follicular portions. Furthermore, CD34-positive cell fractions collected with magnetic cell sorting were capable of differentiating into mesenchymal lineages. This study suggests that dermal perivascular sites act as a niche of MSCs in human scalp skin, which are easily accessible and useful in regenerative medicine.