PMID- 18070082 OWN - NLM STAT- MEDLINE DCOM- 20080721 LR - 20191210 IS - 1600-0625 (Electronic) IS - 0906-6705 (Linking) VI - 17 IP - 6 DP - 2008 Jun TI - A graft model for hair development. PG - 512-8 AB - Follicular cell implantation (FCI) is an experimental cell therapy for the treatment of hair loss that uses cultured hair follicle cells to induce new hair formation. This treatment is based on the demonstration that adult dermal papilla cells (DPC) retain the hair inductive capacity they acquired during hair morphogenesis in the embryo. For FCI, hair inductive cells are isolated from scalp biopsies and then propagated in culture in order to provide enough cells to generate many new follicles from a few donor follicles. Following expansion in culture, the cells are implanted into the scalp where they induce the formation of new follicles. Because the process relies on the ability to retain the potential for hair induction during the expansion of DPC in culture, we sought a consistent, reliable and easily performed in vivo assay in which to test hair induction. In this study, we describe a simple graft model that supports hair morphogenesis. The assay combines dermal cells with embryonic mouse epidermis that provides the keratinocyte component of induced follicles. The grafts are placed under a protective skin flap in the host athymic mouse where the cells will form a skin graft with hair if the dermal cells are hair inductive DPC. Using the assay, freshly isolated and cultured mouse embryo dermal cells as well as cultured dermal papilla cells from other species all induced hair formation. The induced hairs were aesthetically indistinguishable from those of the epidermal donor in length, thickness, and pigmentation, and they were histologically normal. FAU - Qiao, Jizeng AU - Qiao J AD - Intercytex Ltd, 175-E New Boston Street, Woburn, MA, USA. FAU - Philips, Erica AU - Philips E FAU - Teumer, Jeff AU - Teumer J LA - eng PT - Evaluation Study PT - Journal Article DEP - 20071207 PL - Denmark TA - Exp Dermatol JT - Experimental dermatology JID - 9301549 RN - EC 3.1.3.1 (Alkaline Phosphatase) SB - IM MH - Alkaline Phosphatase/analysis MH - Animals MH - Cells, Cultured MH - Dermis/cytology/*transplantation MH - Epidermis/embryology/*transplantation MH - Female MH - Fibroblasts/*transplantation MH - Hair/*growth & development/transplantation MH - Humans MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Nude MH - Models, Biological MH - Pregnancy MH - Skin Transplantation/*methods MH - Surgical Flaps EDAT- 2007/12/12 09:00 MHDA- 2008/07/22 09:00 CRDT- 2007/12/12 09:00 PHST- 2007/12/12 09:00 [pubmed] PHST- 2008/07/22 09:00 [medline] PHST- 2007/12/12 09:00 [entrez] AID - EXD661 [pii] AID - 10.1111/j.1600-0625.2007.00661.x [doi] PST - ppublish SO - Exp Dermatol. 2008 Jun;17(6):512-8. doi: 10.1111/j.1600-0625.2007.00661.x. Epub 2007 Dec 7.