Role of microRNA-146a in cancer development by regulating apoptosis

Keihan Kookli1, Kosar Torfi Soleimani2, Eman Fathy Amr3

  • 1International Campus, Iran University of Medical Sciences, Tehran, Iran.

PubMed

Insights

MicroRNAs (miRNAs) like miR-146a are crucial in cancer development and cell death. Understanding miR-146a

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Cancer remains a significant global health challenge despite advances in treatment.
  • MicroRNAs (miRNAs) are small non-coding RNAs regulating gene expression, often dysregulated in cancer.
  • MiR-146a is frequently overexpressed in tumors and linked to cancer cell apoptosis and progression.

Purpose of the Study:

  • To explore the role of miR-146a in regulating cancer cell apoptosis.
  • To investigate the potential of miR-146a as a therapeutic target for cancer treatment.
  • To review the biogenesis, function, and implications of miR-146a in cancer cell death and chemotherapy resistance.

Main Methods:

  • Literature review of studies on miR-146a, cancer, and apoptosis.
  • Analysis of miR-146a's involvement in various cell death pathways.
  • Investigation of exosomal miR-146a's impact on cancer cell apoptosis.

Main Results:

  • MiR-146a expression is correlated with pathological changes and apoptosis regulation in cancer cells.
  • Modulating miRNA expression, including miR-146a, shows promise in mitigating cancer.
  • Exosomal miR-146a may promote apoptosis and potentially overcome chemotherapeutic resistance.

Conclusions:

  • MiR-146a plays a significant role in cancer cell apoptosis and progression.
  • Targeting miR-146a presents a hopeful strategy for enhancing cancer therapy outcomes.
  • Further research into exosomal miR-146a could lead to novel approaches for combating cancer and drug resistance.

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
The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
6.6K
Experimental RNAi02:15

Experimental RNAi

RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
6.1K
lncRNA - Long Non-coding RNAs02:39

lncRNA - Long Non-coding RNAs

In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
8.6K
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...
4.5K