miR-132 and miR-212 cluster function as a tumor suppressor in thyroid cancer cells by CSDE1 mediated

Tong Chen1, Mingdong Lu1, Xiang Zhou1

  • 1Department of General Surgery, The Second Affiliated Hospital of Wenzhou Medical University Wenzhou, China.

Insights

The miR-132/212 microRNA cluster acts as a tumor suppressor in thyroid cancer. It inhibits cancer cell proliferation by directly targeting CSDE1, revealing a new therapeutic pathway.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • MicroRNAs (miRNAs) are implicated in various cancers.
  • The specific role of miRNAs in thyroid cancer pathogenesis is not fully understood.

Purpose of the Study:

  • To investigate the function of the miR-132/212 cluster in thyroid cancer.
  • To identify the molecular targets and mechanisms of miR-132/212 in thyroid cancer.

Main Methods:

  • Assessing the impact of miR-132/212 overexpression and knockdown on thyroid cancer cell proliferation.
  • Identifying direct targets of miR-132/212 using molecular assays.
  • Analyzing the downstream effects on signaling pathways like PTEN/AKT.

Main Results:

  • The miR-132/212 cluster functions as a tumor suppressor in thyroid cancer.
  • miR-132/212 directly targets and downregulates CSDE1 expression.
  • CSDE1 inhibition leads to PTEN upregulation and suppressed AKT activation, inhibiting proliferation.

Conclusions:

  • miR-132/212 acts as a tumor suppressor in thyroid cancer by targeting CSDE1.
  • This pathway highlights miR-132/212 as a potential therapeutic target for thyroid cancer treatment.

Related Concept Videos

MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After...
23.8K
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.6K
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
5.0K
Loss of Tumor Suppressor Gene Functions01:12

Loss of Tumor Suppressor Gene Functions

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
5.8K
Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
9.3K
Master Transcription Regulators02:23

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.6K