A novel role for DYX1C1, a chaperone protein for both Hsp70 and Hsp90, in breast cancer.

Abstract:

AIMS:With three consecutive tetratricopeptide repeat (TPR) motifs at its C-terminus essential for neuronal migration, and a p23 domain at its N-terminus, DYX1C1 was the first gene proposed to have a role in developmental dyslexia. In this study, we attempted to identify the potential interaction of DYX1C1 and heat shock protein, and the role of DYX1C1 in breast cancer. MAIN METHODS:GST pull-down, a yeast two-hybrid system, RT-PCR, site-directed mutagenesis approach. KEY FINDINGS:Our study initially confirmed DYX1C1, a dyslexia related protein, could interact with Hsp70 and Hsp90 via GST pull-down and a yeast two-hybrid system. And we verified that EEVD, the C-terminal residues of DYX1C1, is responsible for the identified association. Further, DYX1C1 mRNA was significantly overexpressed in malignant breast tumor, linking with the up-regulated expression of Hsp70 and Hsp90. SIGNIFICANCE:These results suggest that DYX1C1 is a novel Hsp70 and Hsp90-interacting co-chaperone protein and its expression is associated with malignancy.

authors

Chen Y,Zhao M,Wang S,Chen J,Wang Y,Cao Q,Zhou W,Liu J,Xu Z,Tong G,Li J

doi

10.1007/s00432-009-0568-6

subject

Has Abstract

pub_date

2009-09-01 00:00:00

pages

1265-76

issue

9

eissn

0171-5216

issn

1432-1335

journal_volume

135

pub_type

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