title: Fibromatosis stem cells rather than bone-marrow mesenchymal stem cells recapitulate a murine model of fibromatosis.
abstract: Palmar fibromatosis is a benign fibroproliferative tumor of unknown etiology, with a high rate of recurrence after excision. The offending cells of palmar fibromatosis are myofibroblasts and the cellular origin of other myofibroblasts has previously been reported to be the bone marrow. However, further clarification of the relationship between bone marrow precursors and palmar fibromatosis is required. Stem cells (SCs) are known to exist in various tissues, but whether SCs can be isolated from fibromatosis tissue is still unclear. The purpose of this study was to isolate and identify stem cells from human palmar fibromatosis, and to evaluate the differences in the differentiation and fibrogenic capacities of bone marrow stem cells (BMSCs) and fibromatosis-derived stem cells (FSCs). We found that FSCs had better fibrogenic differentiation potential than BMSCs, whereas BMSCs had better adipogenic and chondrogenic differentiation capacities. Treatment with transforming growth factor-β1 increased the expression of α-smooth muscle actin, and types III and I collagen significantly more in FSCs than in BMSCs. An in vivo study further confirmed the results of fibrogenesis and suggested that FSCs can recapitulate the fibromatosis nodule. In summary, their myofibroblastic differentiation both in vivo and in vitro makes FSCs a potential cell source for future applications in murine models of fibromatosis or fibrogenesis.
authors.affiliation: Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan. jpwang801@gmail.com
authors.forename: Jung-Pan
authors.initials: JP
authors.lastname: Wang
authors.forename: Yun-Ju
authors.initials: YJ
authors.lastname: Hui
authors.forename: Shih-Tien
authors.initials: ST
authors.lastname: Wang
authors.forename: Yi-Chao
authors.initials: YC
authors.lastname: Huang
authors.forename: En-Rung
authors.initials: ER
authors.lastname: Chiang
authors.forename: Chien-Lin
authors.initials: CL
authors.lastname: Liu
authors.forename: Tain-Hsiung
authors.initials: TH
authors.lastname: Chen
authors.forename: Shih-Chieh
authors.initials: SC
authors.lastname: Hung
mesh_terms: D000199:Actins / Q000096:biosynthesis; D000818:Animals; D001854:Bone Marrow Cells / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D002448:Cell Adhesion; D002454:Cell Differentiation; D002469:Cell Separation; D024042:Collagen Type I / Q000096:biosynthesis; D024061:Collagen Type III / Q000096:biosynthesis; D004195:Disease Models, Animal; D005260:Female; D005350:Fibroma / Q000378:metabolism / Q000473:pathology*; D005434:Flow Cytometry; D006801:Humans; D008233:Lymphotoxin-alpha / Q000494:pharmacology; D059630:Mesenchymal Stem Cells / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D051379:Mice; D058628:Myofibroblasts / Q000187:drug effects / Q000378:metabolism / Q000473:pathology*; D013234:Stem Cells / Q000187:drug effects / Q000378:metabolism / Q000473:pathology*
chemical_list: C541116:ACTA2 protein, human; D000199:Actins; D024042:Collagen Type I; D024061:Collagen Type III; D008233:Lymphotoxin-alpha