Endocrinology and Metabolism

Seonhyang Jeong

2 Articles

Thyroid
Comparative Analysis of Driver Mutations and Transcriptomes in Papillary Thyroid Cancer by Region of Residence in South Korea: Jandee Lee, Seonhyang Jeong, Hwa Young Lee, Sunmi Park, Meesson Jeong, Young Suk Jo; Endocrinol Metab. 2023;38(6):720-729. Published online November 6, 2023; DOI: https://doi.org/10.3803/EnM.2023.1758

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Background
Radiation exposure is a well-known risk factor for papillary thyroid cancer (PTC). South Korea has 24 nuclear reactors in operation; however, no molecular biological analysis has been performed on patients with PTC living near nuclear power plants.
Methods
We retrospectively included patients with PTC (n=512) divided into three groups according to their place of residence at the time of operation: inland areas (n=300), coastal areas far from nuclear power plants (n=134), and nuclear power plant areas (n=78). After propensity score matching (1:1:1) by age, sex, and surgical procedure, the frequency of representative driver mutations and gene expression profiles were compared (n=50 per group). Epithelial-mesenchymal transition (EMT), BRAF, thyroid differentiation, and radiation scores were calculated and compared.
Results
No significant difference was observed in clinicopathological characteristics, including radiation exposure history and the frequency of incidentally discovered thyroid cancer, among the three groups. BRAF^V600E mutation was most frequently detected in the groups, with no difference among the three groups. Furthermore, gene expression profiles showed no statistically significant difference. EMT and BRAF scores were higher in our cohort than in cohorts from Chernobyl tissue bank and The Cancer Genome Atlas Thyroid Cancer; however, there was no difference according to the place of residence. Radiation scores were highest in the Chernobyl tissue bank but exhibited no difference according to the place of residence.
Conclusion
Differences in clinicopathological characteristics, frequency of representative driver mutations, and gene expression profiles were not observed according to patients’ region of residence in South Korea.

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Systemic therapy for differentiated thyroid cancer with distant metastasis
Eun Kyung Lee
Journal of the Korean Medical Association.2024; 67(7): 484. CrossRef

Endocrine Research
Liver X Receptor β Related to Tumor Progression and Ribosome Gene Expression in Papillary Thyroid Cancer: Seonhyang Jeong, In-Kyu Kim, Hyunji Kim, Moon Jung Choi, Jandee Lee, Young Suk Jo; Endocrinol Metab. 2020;35(3):656-668. Published online August 20, 2020; DOI: https://doi.org/10.3803/EnM.2020.667

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Abstract PDF Supplementary Material PubReader ePub

Background
Intracellular lipid deposition has been reported in thyroid glands in obese animal and human. To understand the regulatory mechanism of lipid metabolism in thyroid cancer, we investigated the expression status of liver X receptor (LXR) and analyzed its clinicopathological characteristics and molecular biological features.
Methods
Expression status of LXR and its transcriptional targets in human cancers were analyzed using The Cancer Genome Atlas (TCGA). The gene-sets related to high LXRβ expression was investigated by gene set enrichment analysis (GSEA) using Kyoto Encyclopedia of Genes and Genomes (KEGG) signaling pathways and gene ontology biologic process. Quantitative reverse transcription polymerase chain reaction was performed in thyroid cancer samples using our validation cohort.
Results
In contrast to low expression of LXRα, LXRβ was highly expressed in thyroid cancer compared to the other types of human cancers. High LXRβ expression was correlated with the expression of LXRβ transcriptional targets genes, such as apolipoprotein C1 (APOC1), APOC2, apolipoprotein E (APOE), ATP binding cassette subfamily G member 8 (ABCG8), sterol regulatory elementbinding protein 1c (SREBP1c), and SPOT14. Furthermore, High LXRβ expression group indicated poor clinicopathological characteristics and aggressive molecular biological features independently from the drive mutation status. Mechanistically, high LXRβ expression was coordinately related to ribosome-related gene sets.
Conclusion
The mechanistic link between LXRβ and ribosomal activity will be addressed to develop new diagnostic and therapeutic targets in thyroid cancers.

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Citations to this article as recorded by

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Simultaneous Expression of Long Non-Coding RNA FAL1 and Extracellular Matrix Protein 1 Defines Tumour Behaviour in Young Patients with Papillary Thyroid Cancer
Seonhyang Jeong, Seul-Gi Lee, Hyunji Kim, Gibbeum Lee, Sunmi Park, In-Kyu Kim, Jandee Lee, Young-Suk Jo
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BMC Bioinformatics.2021;[Epub] CrossRef
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Frontiers in Oncology.2021;[Epub] CrossRef
Metabolic Reprogramming of Thyroid Cancer Cells and Crosstalk in Their Microenvironment
Lisha Bao, Tong Xu, Xixuan Lu, Ping Huang, Zongfu Pan, Minghua Ge
Frontiers in Oncology.2021;[Epub] CrossRef
Cooperative Subtype Switch of Thyroid Hormone Receptor and Nuclear Receptor Corepressor Related Epithelial–Mesenchymal Transition in Papillary Thyroid Cancer
Seonhyang Jeong, Seul Gi Lee, Hyunji Kim, Gibbeum Lee, Sunmi Park, In-Kyu Kim, Jandee Lee, Young Suk Jo
International Journal of Thyroidology.2021; 14(2): 152. CrossRef

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