The helix‐loop‐helix transcription factors Id1 and Id3 have a functional role in control of cell division in human normal and neoplastic chondrocytes

FEBS Letters

Inerot, Sven²  Thornemo, Maria¹  Asp, Julia¹  Lindahl, Anders¹ 

[1] Research Center for Endocrinology and Metabolism, Institution of Laboratory Medicine, Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska University Hospital, S-413 45 Göteborg, Sweden;Department of Orthopedics, Section of Orthopedic Oncology, Sahlgrenska University Hospital, S-413 45 Göteborg, Sweden

关键词: Id;    E12;    Articular chondrocyte;    Chondrosarcoma;    Differentiation;    Proliferation;    HLH;    helix-loop-helix;    Id;    inhibitor of differentiation/DNA binding;    FCS;    fetal calf serum;    RPA;    RNase protection assay;    RT-PCR;    reverse transcriptase polymerase chain reaction;    PBS;    phosphate-buffered saline;    DTT;    dithiothreitol;    TBS;    Tris-buffered saline;    BrdU;    5-bromo-2-deoxyuridine;   

DOI  :  10.1016/S0014-5793(98)01268-X

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The expression and localization of the helix-loop-helix transcription factors Id1 and Id3, as well as localization of the E12-protein, were studied in cells isolated from human articular cartilage and chondrosarcoma. Serum withdrawal down-regulated Id1 and Id3 expression in chondrocytes but not the Id1 expression in chondrosarcoma cells. Antisense oligonucleotides directed against Id1 and Id3 decreased BrdU labeling in both cell types. E12 was localized to the nucleus in chondrocytes and non-confluent tumor cells and in confluent tumor cells, E12 had a cytoplasmic localization. This study suggests a functional role for Id1 and Id3 in the control of proliferation and differentiation of cartilage.

【 授权许可】

Unknown