Roles of miRNA dysregulation in the pathogenesis of multiple myeloma

Dan Chen1, Xinhong Yang2, Min Liu2

  • 1Department of Central Laboratory, The Affiliated Hospital of Chengde Medical College, Chengde, Hebei, China.

Cancer Gene Therapy
|January 6, 2021
PubMed

Insights

MicroRNAs (miRNAs) play a crucial role in multiple myeloma (MM) progression and drug resistance. Understanding these small RNAs offers potential for new prognostic biomarkers and therapeutic strategies against this incurable cancer.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • Multiple myeloma (MM) is a complex plasma cell malignancy causing significant morbidity.
  • Novel agents have improved patient outcomes, but MM remains incurable with considerable heterogeneity.
  • MicroRNAs (miRNAs) are noncoding RNAs regulating gene expression and are implicated in MM pathology.

Purpose of the Study:

  • To summarize the current knowledge on the roles of miRNAs in multiple myeloma.
  • To highlight the significance of miRNAs in regulating MM progression factors.
  • To discuss the potential of miRNAs as prognostic biomarkers and therapeutic targets for MM.

Main Methods:

  • Literature review and synthesis of existing research on miRNAs in multiple myeloma.
  • Analysis of miRNA involvement in key pathological factors of MM.
  • Evaluation of miRNA potential in prognosis and therapy.

Main Results:

  • miRNA deregulation is closely linked to MM initiation, progression, metastasis, prognosis, and drug response.
  • miRNAs significantly regulate critical pathological factors in MM, including the bone marrow microenvironment, methylation, immune regulation, genomic instability, and drug resistance.

Conclusions:

  • miRNAs are integral to the complex pathology of multiple myeloma.
  • Targeting the miRNA network presents a promising avenue for novel anti-MM therapeutic approaches.
  • miRNAs hold potential as valuable prognostic biomarkers and therapeutic targets for multiple myeloma.

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...
3.4K
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...
23.3K
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...
4.9K
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...
4.1K
Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
24.7K