Related Experiment Video
Updated: Jun 11, 2025

Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome
Published on: June 15, 2016
ZNF217 Mediates Transcriptional Activation of GRHL3 to Regulate SLC22A31 and Promote Malignant Progression in Thyroid
Ying Xu1, Chunxu Liu1, Qingrui Meng2
1Department of Ultrasound Medicine, Daqing Oilfield General Hospital, No.9, Zhongkang Street, Daqing, 163000, Heilongjiang, People's Republic of China.
Abstract:
The incidence of thyroid cancer (THCA) has increased worldwide during the past 40 years. However, an understanding of the mechanisms and major transcription factors involved in THCA is insufficient to identify therapeutic targets against THCA. To reveal such mechanisms, we conducted bioinformatics analyses to assess the differential expression in human THCA sample and normal tissue sample, leading us to focus on the function of the ZNF217/GRHL3/ SLC22A31 axis in mediating biological activity in THCA. The genes of interest were interfered with lentiviral vectors, and transfection efficiency was verified using RT-qPCR. ZNF217, GRHL3, and SLC22A31 were abundantly expressed in THCA tissues or cells. Knockdown of GRHL3, ZNF217, or SLC22A31 all significantly curtailed the malignant biological behavior of THCA cells. ZNF217 promoted GRHL3 expression through transcriptional activation, thereby increasing the transcription of SLC22A31. Ectopic expression of GRHL3 or SLC22A31 abated the suppressing impact of ZNF217 or GRHL3 knockdown on the biological activity of THCA cells. Collectively, our results demonstrated that ZNF217 acted as an activator of GRHL3, thereby promoting the expression of SLC22A31 and the malignant activity of THCA cells.
Insights
Thyroid cancer (THCA) mechanisms remain unclear. This study identifies the ZNF217/GRHL3/SLC22A31 axis as crucial for THCA progression, revealing ZNF217 as a key driver of malignant activity.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Thyroid cancer (THCA) incidence is rising globally.
- Mechanisms and key transcription factors in THCA require further elucidation for therapeutic target identification.
- Understanding the ZNF217/GRHL3/SLC22A31 axis is critical for THCA research.
Purpose of the Study:
- To investigate the role of the ZNF217/GRHL3/SLC22A31 axis in thyroid cancer.
- To elucidate the molecular mechanisms underlying THCA progression.
- To identify potential therapeutic targets for THCA.
Main Methods:
- Bioinformatics analyses of differential gene expression in THCA and normal tissues.
- Gene interference using lentiviral vectors.
- Quantitative reverse transcription PCR (RT-qPCR) for transfection efficiency verification.
Main Results:
- ZNF217, GRHL3, and SLC22A31 were found to be highly expressed in THCA tissues and cells.
- Knockdown of ZNF217, GRHL3, or SLC22A31 significantly reduced the malignant behavior of THCA cells.
- ZNF217 activates GRHL3 transcription, which in turn upregulates SLC22A31 expression, promoting THCA cell activity.
Conclusions:
- The ZNF217/GRHL3/SLC22A31 axis plays a significant role in mediating the biological activity of thyroid cancer.
- ZNF217 acts as an activator of GRHL3, driving SLC22A31 expression and contributing to THCA malignancy.
- This axis represents a potential therapeutic target for thyroid cancer treatment.
Related Concept Videos
Co-activators and Co-repressors
Synthesis and Regulation of Thyroid Hormones
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The...
The Nucleolus
Master Transcription Regulators
Abnormal Proliferation
lncRNA - Long Non-coding RNAs

