PMID- 12707231 OWN - NLM STAT- MEDLINE DCOM- 20030505 LR - 20231213 IS - 1524-4539 (Electronic) IS - 0009-7322 (Linking) VI - 107 IP - 16 DP - 2003 Apr 29 TI - Isolation of bone marrow stromal cell-derived smooth muscle cells by a human SM22alpha promoter: in vitro differentiation of putative smooth muscle progenitor cells of bone marrow. PG - 2078-81 AB - BACKGROUND: Bone marrow stromal cells (BMSCs) have many characteristics of mesenchymal stem cells that can differentiate into smooth muscle cells (SMCs). However, there have been few studies closely following the cell development of smooth muscle lineage among BMSCs. METHODS AND RESULTS: To investigate the possible existence of a cell population committed to the SMC lineage among bone marrow adhesion cells, we tried to detect and follow the in vitro differentiation of such a cell type by using a promoter-sorting method with a human SM22alpha promoter (-480 bp)/green fluorescent protein (GFP) construct. The construct was transfected to adhesion cells that appeared 5 days after the seeding of mononuclear cells from bone marrow. GFP was first detectable 5 days after the transfection in a cell population [Ad(G) cells], which expressed PDGF-beta but neither mature (calponin) nor immature (SMemb) SMC-specific proteins at that time. However, the cells were eventually grown into individual clones that expressed SMC-specific proteins (alpha-smooth muscle actin, calponin, and SM-1), suggesting that Ad(G) cells have partly at least progenitor properties. Because early studies have reported that PDGF-beta signaling plays pivotal roles in the differentiation of mesenchymal smooth muscle progenitor cells, Ad(G) cells might be putative mesenchymal smooth muscle progenitors expressing PDGF-beta. CONCLUSIONS: We demonstrated the presence of a cell population fated to become SMCs and followed their differentiation into SMCs among BMSCs. FAU - Kashiwakura, Yuji AU - Kashiwakura Y AD - Department of Cardiology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan. FAU - Katoh, Youichi AU - Katoh Y FAU - Tamayose, Kenji AU - Tamayose K FAU - Konishi, Hakuoh AU - Konishi H FAU - Takaya, Norihide AU - Takaya N FAU - Yuhara, Senji AU - Yuhara S FAU - Yamada, Masanori AU - Yamada M FAU - Sugimoto, Koichi AU - Sugimoto K FAU - Daida, Hiroyuki AU - Daida H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20030421 PL - United States TA - Circulation JT - Circulation JID - 0147763 RN - 0 (Antibodies) RN - 0 (Calcium-Binding Proteins) RN - 0 (Luminescent Proteins) RN - 0 (Microfilament Proteins) RN - 0 (Muscle Proteins) RN - 0 (RNA, Messenger) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Tagln protein, mouse) RN - 0 (transgelin) RN - 147336-22-9 (Green Fluorescent Proteins) RN - EC 2.7.10.1 (Receptor, Platelet-Derived Growth Factor beta) RN - EC 3.6.1.- (Smooth Muscle Myosins) SB - IM MH - Animals MH - Antibodies MH - Bone Marrow Cells/*cytology MH - Calcium-Binding Proteins/analysis/immunology MH - Cell Differentiation MH - Cell Lineage MH - Cells, Cultured MH - Clone Cells MH - Green Fluorescent Proteins MH - Humans MH - Luminescent Proteins/analysis/genetics MH - Mice MH - Mice, Inbred C57BL MH - Microfilament Proteins/*genetics MH - Muscle Proteins/*genetics MH - Muscle, Smooth, Vascular/chemistry/*cytology/metabolism MH - Promoter Regions, Genetic MH - RNA, Messenger/biosynthesis MH - Receptor, Platelet-Derived Growth Factor beta/analysis/immunology MH - Recombinant Fusion Proteins/analysis MH - Smooth Muscle Myosins/analysis/biosynthesis/genetics MH - Stem Cells/*physiology MH - Stromal Cells/*physiology MH - Transfection MH - Calponins EDAT- 2003/04/23 05:00 MHDA- 2003/05/06 05:00 CRDT- 2003/04/23 05:00 PHST- 2003/04/23 05:00 [pubmed] PHST- 2003/05/06 05:00 [medline] PHST- 2003/04/23 05:00 [entrez] AID - 01.CIR.0000070082.64414.B5 [pii] AID - 10.1161/01.CIR.0000070082.64414.B5 [doi] PST - ppublish SO - Circulation. 2003 Apr 29;107(16):2078-81. doi: 10.1161/01.CIR.0000070082.64414.B5. Epub 2003 Apr 21.