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Published in: Endocrine 1/2023

Open Access 04-11-2022 | Melanoma | Original Article

Silencing FOXP2 reverses vemurafenib resistance in BRAFV600E mutant papillary thyroid cancer and melanoma cells

Authors: Suyuan Jiang, Yuxin Huang, Yuan Li, Qin Gu, Cuiping Jiang, Xiaoming Tao, Jiao Sun

Published in: Endocrine | Issue 1/2023

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Abstract

Background

Vemurafenib (VEM) is a commonly used inhibitor of papillary thyroid cancer (PTC) and melanoma with the BRAFV600E mutation; however, acquired resistance is unavoidable. The present study aimed to identify a potential target to reverse resistance.

Materials and methods

A VEM-resistant PTC cell line (B-CPAP/VR) was established by gradually increasing the drug concentration, and a VEM-resistant BRAFV600E melanoma cell line (A375/VR) was also established. RNA sequencing and bioinformatics analyses were conducted to identify dysregulated genes and construct a transcription factor (TF) network. The role of a potential TF, forkhead box P2 (FOXP2), verified by qRT-PCR, was selected for further confirmation.

Results

The two resistant cell lines were tolerant of VEM and displayed higher migration and colony formation abilities (p < 0.05). RNA sequencing identified 9177 dysregulated genes in the resistant cell lines, and a TF network consisting of 13 TFs and 44 target genes was constructed. Alterations in FOXP2 expression were determined to be consistent between the two VEM-resistant cell lines. Finally, silencing FOXP2 resulted in an increase in drug sensitivity and significant suppression of the migration and colony formation abilities of the two resistant cell lines (p < 0.05).

Conclusions

The present study successfully established two VEM-resistant cell lines and identified a potential target for VEM-resistant PTC or melanoma.
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Metadata
Title
Silencing FOXP2 reverses vemurafenib resistance in BRAFV600E mutant papillary thyroid cancer and melanoma cells
Authors
Suyuan Jiang
Yuxin Huang
Yuan Li
Qin Gu
Cuiping Jiang
Xiaoming Tao
Jiao Sun
Publication date
04-11-2022
Publisher
Springer US
Published in
Endocrine / Issue 1/2023
Print ISSN: 1355-008X
Electronic ISSN: 1559-0100
DOI
https://doi.org/10.1007/s12020-022-03180-y

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