TY - JOUR
T1 - Bobby Sox homology regulates odontoblast differentiation of human dental pulp stem cells/progenitors
AU - Choi, Young Ae
AU - Seol, Mi Youn
AU - Shin, Hong In
AU - Park, Eui Kyun
PY - 2014/5/30
Y1 - 2014/5/30
N2 - Background: Transcription factors have been implicated in regulating the differentiation of odontoblasts from dental pulp stem cells/progenitors (DPSCs/progenitors), but their regulatory network is not completely understood. Result: New transcription factors that control the odontoblast differentiation of human DPSCs/progenitors were analyzed using a microarray. The result revealed bobby sox homolog (BBX) to be expressed most strongly during odontoblast differentiation. Validation using RT-PCR also revealed the strong expression of BBX during the odontoblast differentiation of DPSCs/progenitors. BBX expression was also detected in adult molar odontoblasts and other tissues, including the heart, kidney, testis, and bone marrow. To understand the role of BBX in odontoblast differentiation, BBX variant 1 and 2 cDNA were cloned and overexpressed in DPSCs/progenitors. The results showed that the overexpression of BBX cDNA in DPSCs/progenitors induced substantial mineralization and expression of the odontoblast marker genes, such as ALP, OPN, BSP, DMP1, and DSPP. The knockdown of BBX using shRNA, however, did not affect mineralization, but the expression of ALP and DSPP was decreased substantially. Meanwhile overexpression or knockdown of BBX did not modulate proliferation of DPSCs/progenitors. Conclusion: Our results suggest that BBX plays an important role during the odontoblast differentiation of human DPSCs/progenitors.
AB - Background: Transcription factors have been implicated in regulating the differentiation of odontoblasts from dental pulp stem cells/progenitors (DPSCs/progenitors), but their regulatory network is not completely understood. Result: New transcription factors that control the odontoblast differentiation of human DPSCs/progenitors were analyzed using a microarray. The result revealed bobby sox homolog (BBX) to be expressed most strongly during odontoblast differentiation. Validation using RT-PCR also revealed the strong expression of BBX during the odontoblast differentiation of DPSCs/progenitors. BBX expression was also detected in adult molar odontoblasts and other tissues, including the heart, kidney, testis, and bone marrow. To understand the role of BBX in odontoblast differentiation, BBX variant 1 and 2 cDNA were cloned and overexpressed in DPSCs/progenitors. The results showed that the overexpression of BBX cDNA in DPSCs/progenitors induced substantial mineralization and expression of the odontoblast marker genes, such as ALP, OPN, BSP, DMP1, and DSPP. The knockdown of BBX using shRNA, however, did not affect mineralization, but the expression of ALP and DSPP was decreased substantially. Meanwhile overexpression or knockdown of BBX did not modulate proliferation of DPSCs/progenitors. Conclusion: Our results suggest that BBX plays an important role during the odontoblast differentiation of human DPSCs/progenitors.
KW - BBX
KW - DPSC
KW - Transcription factor
UR - http://www.scopus.com/inward/record.url?scp=84903275863&partnerID=8YFLogxK
U2 - 10.1186/1478-811X-12-35
DO - 10.1186/1478-811X-12-35
M3 - Article
C2 - 24885382
AN - SCOPUS:84903275863
SN - 1478-811X
VL - 12
JO - Cell Communication and Signaling
JF - Cell Communication and Signaling
IS - 1
M1 - 35
ER -