2007 Fiscal Year Final Research Report Summary
Transcriptome analysis in the differentiation from human mesenchymal stem cells to osteoblasts and chondrocytes
| Project/Area Number |
16592024
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Surgical dentistry
|
|---|
| Research Institution | Nihon University |
|---|
Principal Investigator |
KAMINO Yoshikazu Nihon University, Department of Maxillofacial Surgery, Assistant Professor (60287662)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
OGURA Naomi School of Dentistry at Matsudo, Department of Maxillofacial Surgery, Assistant Professor (10152448)
|
|---|
| Project Period (FY) |
2004 – 2007
|
| Keywords | mesenchvmal stem cells / osteoblast / differentiation |
|---|
| Research Abstract |
Human mesenchymal stem cells (hMSC) have the capacity to differentiate into osteoblasts. To identify genes involved in this process, oligonucleotide microarray was applied to analyze the gene expression profile of total RNA isolated from hMSC cultured in osteogenic induction medium (MSCOIM) on days 0, 1, 3, 5, 7, 10, 13, and 17. Hierarchical clustering analysis from microarray data defined 4 groups within the time course : day 0, day 1, days 3-7, and days 10-17. Asporin (ASPN), which is a small leucine-rich proteoglycan (SLRP), was the most up-regulated of the extracellular matrix proteins in the mineralization stage. Seven SLRPs were expressed in hMSC during osteoblast differentiation. Gene expressions of the seven SLRPs were compared in hMSC cultured in MSCOIM or MSC growth medium (MSCGM) on days 0, 1, 3, and 10. The mRNA levels of ASPN and osteoadherin/osteomodulin (OSAD/OMD) were dramatically increased in hMSC cultured with MSCOIM compared with MSCGM. Thus, ASPN and OSAD/OMD may be important matrix molecules during differentiation into osteoblasts and/or mineralization.
|
