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| Content Provider | PubMed Central |
|---|---|
| Author | Crossno, Joseph T. Majka, Susan M. Grazia, Todd Gill, Ronald G. Klemm, Dwight J. |
| Copyright Year | 2006 |
| Abstract | Obesity and weight gain are characterized by increased adipose tissue mass due to an increase in the size of individual adipocytes and the generation of new adipocytes. New adipocytes are believed to arise from resident adipose tissue preadipocytes and mesenchymal progenitor cells. However, it is possible that progenitor cells from other tissues, in particular BM, could also contribute to development of new adipocytes in adipose tissue. We tested this hypothesis by transplanting whole BM cells from GFP-expressing transgenic mice into wild-type C57BL/6 mice and subjecting them to a high-fat diet or treatment with the thiazolidinedione (TZD) rosiglitazone (ROSI) for several weeks. Histological examination of adipose tissue or FACS of adipocytes revealed the presence of GFP+ multilocular (ML) adipocytes, whose number was significantly increased by ROSI treatment or high-fat feeding. These ML adipocytes expressed adiponectin, perilipin, fatty acid–binding protein (FABP), leptin, C/EBPα, and PPARγ but not uncoupling protein–1 (UCP-1), the CD45 hematopoietic lineage marker, or the CDllb monocyte marker. They also exhibited increased mitochondrial content. Appearance of GFP+ ML adipocytes was contemporaneous with an increase in circulating levels of mesenchymal and hematopoietic progenitor cells in ROSI-treated animals. We conclude that TZDs and high-fat feeding promote the trafficking of BM-derived circulating progenitor cells to adipose tissue and their differentiation into ML adipocytes. |
| Related Links | http://dx.doi.org/10.1172/jci28510 |
| Ending Page | 3228 |
| Page Count | 9 |
| Starting Page | 3220 |
| File Format | |
| ISSN | 00219738 |
| Journal | Journal of Clinical Investigation |
| Issue Number | 12 |
| Volume Number | 116 |
| Language | English |
| Publisher | American Society for Clinical Investigation |
| Publisher Date | 2006-12-01 |
| Access Restriction | Open |
| Rights Holder | American Society for Clinical Investigation |
| Subject Keyword | Medicine(all) Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine |
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