Contactin‑associated protein‑like 2 expression in SH‑SY5Y cells is upregulated by a FOXP2 mutant with a shortened poly‑glutamine tract.

Abstract:

:The forkhead box protein P2 (FOXP2) gene encodes an important transcription factor that contains a polyglutamine (poly‑Q) tract and a forkhead DNA binding domain. It has been observed that FOXP2 is associated with speech sound disorder (SSD), and mutations that decrease the length of the poly‑Q tract were identified in the FOXP2 gene of SSD patients. However, the exact role of poly‑Q reduction is not well understood. In the present study, constructs expressing wild‑type and poly‑Q reduction mutants of FOXP2 were generated by polymerase chain reaction (PCR) using lentiviral vectors and transfected into the SH‑SY5Y neuronal cell line. Quantitative reverse transcription (qRT)‑PCR and western blotting indicated that infected cells stably expressed high levels of FOXP2. Using this cell model, the impact of FOXP2 on the expression of contactin‑associated protein‑like 2 (CNTNAP2) were investigated, and CNTNAP2 mRNA expression levels were observed to be significantly higher in cells expressing poly‑Q‑reduced FOXP2. In addition, the expression level of CASPR2, a mammalian homolog of Drosophila Neurexin IV, was increased in cells expressing the FOXP2 mutant. Demonstration of regulation by FOXP2 indicates that CNTNAP2 may also be involved in SSD.

journal_name

Mol Med Rep

authors

Zhao Y,Liu X,Sun H,Wang Y,Yang W,Ma H

doi

10.3892/mmr.2015.4483

subject

Has Abstract

pub_date

2015-12-01 00:00:00

pages

8162-8

issue

6

eissn

1791-2997

issn

1791-3004

journal_volume

12

pub_type

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