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Mechanism of DAPK1 for Regulating Cancer Stem Cells in Thyroid Cancer
1Department of Anatomy, Konkuk University College of Medicine, 50-1, 268 Chungwon-daero, Cungju-si 27478, Republic of Korea.
Abstract:
Death-associated protein kinase 1 (DAPK1) is a calcium/calmodulin (Ca2+/CaM)-dependent serine/threonine (Ser/Thr) protein kinase and is characteristically downregulated in metastatic cancer. Several studies showed that DAPK1 is involved in both the early and late stages of cancer. DAPK1 downregulation is elaborately controlled by epigenetic, transcriptional, posttranscriptional, and posttranslational processes. DAPK1 is known to regulate not only cancer cells but also stromal cells. Recent studies showed that DAPK1 was involved not only in tumor suppression but also in epithelial-mesenchymal transition (EMT) and cancer stem cell (CSC) formation in colon and thyroid cancers. CSCs are major factors in determining cancer aggressiveness in cancer metastasis and treatment prognosis by influencing EMT. However, the molecular mechanism involved in the regulation of cancer cells by DAPK1 remains unclear. In particular, little is known about the existence of CSCs and how they are regulated in papillary thyroid carcinoma (PTC) among thyroid cancers. In this review, we describe the molecular mechanism of CSC regulation by DAPK1 in PTC progression.
Insights
Death-associated protein kinase 1 (DAPK1) is downregulated in metastatic cancers. This review explores DAPK1's role in regulating cancer stem cells (CSCs) and epithelial-mesenchymal transition (EMT) in papillary thyroid carcinoma (PTC) progression.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Death-associated protein kinase 1 (DAPK1) is a serine/threonine kinase downregulated in metastatic cancers.
- DAPK1 regulates tumor suppression, epithelial-mesenchymal transition (EMT), and cancer stem cell (CSC) formation.
- The role of DAPK1 in CSC regulation within papillary thyroid carcinoma (PTC) remains largely unelucidated.
Purpose of the Study:
- To elucidate the molecular mechanisms by which DAPK1 regulates CSCs in PTC progression.
- To review the current understanding of DAPK1's involvement in thyroid cancer, specifically PTC.
- To highlight the link between DAPK1, EMT, and CSCs in the context of PTC.
Main Methods:
- Literature review of studies on DAPK1, CSCs, and EMT in cancer.
- Analysis of epigenetic, transcriptional, posttranscriptional, and posttranslational regulation of DAPK1.
- Synthesis of existing data to propose a model for DAPK1-mediated CSC regulation in PTC.
Main Results:
- DAPK1 downregulation is implicated in cancer progression through various regulatory mechanisms.
- DAPK1 influences both cancer and stromal cells, impacting tumor behavior.
- Emerging evidence suggests DAPK1's critical role in EMT and CSC generation in thyroid cancers.
Conclusions:
- DAPK1 plays a multifaceted role in cancer, including tumor suppression and promotion of EMT and CSCs.
- Understanding DAPK1's regulation of CSCs in PTC is crucial for developing targeted therapies.
- Further research is needed to fully delineate the molecular pathways involved in DAPK1-mediated CSC regulation in PTC.
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