MiR-181c-5p Regulates Lung Adenocarcinoma Progression via Targeting PRKN

Jing Wang1, Man Li2, Meigui Wang3

  • 1Department of Oncology, The Second People's Hospital of Liaocheng, Linqing, 252600, Shandong Province, China.

Biochemical Genetics
|August 2, 2023
PubMed

Insights

MicroRNA miR-181c-5p is elevated in lung adenocarcinoma and drives cancer progression by targeting the Parkin gene (PRKN). Inhibiting miR-181c-5p suppressed tumor growth, suggesting its potential as a biomarker.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNAs (miRNAs) play a critical role in the development of lung adenocarcinoma.
  • The specific role and mechanism of miR-181c-5p in lung adenocarcinoma are not well understood.

Purpose of the Study:

  • To investigate the regulatory mechanism of miR-181c-5p in lung adenocarcinoma progression.
  • To explore the potential of miR-181c-5p as a diagnostic and predictive marker.

Main Methods:

  • Quantitative real-time PCR (RT-qPCR) to measure miR-181c-5p levels.
  • Cell viability, migration, and invasion assays (CCK-8, Transwell).
  • Bioinformatic prediction (miRDB) and dual-luciferase reporter assay to confirm target gene (PRKN).

Main Results:

  • miR-181c-5p expression was significantly upregulated in lung adenocarcinoma tissues and cells.
  • Downregulation of miR-181c-5p inhibited cell viability, migration, and invasion.
  • PRKN was identified as a direct target of miR-181c-5p, with inverse correlation in expression.
  • PRKN mediated the effects of miR-181c-5p on lung adenocarcinoma progression.

Conclusions:

  • miR-181c-5p promotes lung adenocarcinoma progression by targeting PRKN.
  • miR-181c-5p represents a potential diagnostic and predictive biomarker for lung adenocarcinoma.
  • Targeting miR-181c-5p may offer novel therapeutic strategies for lung adenocarcinoma.

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 the pre-miRNA...
3.0K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
3.8K
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...
4.6K
Tumor Progression02:07

Tumor Progression

Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
6.4K
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...
3.7K
Induced Pluripotent Stem Cells01:06

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic...
4.2K