TEKT4 Promotes Papillary Thyroid Cancer Cell Proliferation, Colony Formation, and Metastasis through Activating

Zhouci Zheng1, Xiaofen Zhou2, Yefeng Cai2

  • 1Departments of Neck Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.

Endocrine Pathology
|September 26, 2018
PubMed

Insights

Thyroid cancer

Area of Science:

  • Endocrinology
  • Molecular Oncology
  • Genetics

Background:

  • Thyroid carcinoma is a prevalent endocrine malignancy with unclear molecular drivers.
  • The gene TEKT4 has been linked to other diseases, but its specific role in thyroid cancer requires investigation.

Purpose of the Study:

  • To investigate the function of TEKT4 in papillary thyroid cancer (PTC).
  • To determine the effect of TEKT4 on aggressive behaviors in PTC cell lines.

Main Methods:

  • Utilized small interfering RNA (siRNA) to downregulate TEKT4 expression in TPC1 and BCPAP cell lines.
  • Assessed cell proliferation, colony formation, migration, and invasion assays.
  • Analyzed the involvement of the PI3K/Akt pathway.

Main Results:

  • TEKT4 downregulation significantly suppressed cell proliferation, colony formation, migration, and invasion in PTC cell lines.
  • Knockdown of TEKT4 demonstrated a tumor-suppressing role.
  • The observed tumor-suppressing effects were associated with the silencing of the PI3K/Akt pathway.

Conclusions:

  • TEKT4 plays a significant role in the aggressive behavior of papillary thyroid cancer.
  • TEKT4 downregulation exhibits anti-cancer effects in PTC, potentially via the PI3K/Akt pathway.
  • TEKT4 warrants further investigation for its biological implications in thyroid carcinoma.

Related Concept Videos

PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a...
5.6K
Papillary Dermis01:11

Papillary Dermis

Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen...
5.7K
Cells Coordinate Growth and Proliferation02:36

Cells Coordinate Growth and Proliferation

Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...
5.1K
The Eukaryotic Promoter Region02:40

The Eukaryotic Promoter Region

The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences.  The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
18.8K
Metastasis02:30

Metastasis

Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
6.6K
Co-activators and Co-repressors02:04

Co-activators and Co-repressors

Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
8.6K