Role of microRNAs in lymphoid biology and disease

Muller Fabbri1, Carlo M Croce

  • 1Department of Molecular Virology, Immunology and Medical Genetics, the Ohio State University Comprehensive Cancer Center, Columbus, Ohio 43210, USA.

Abstract

Insights

MicroRNA (miRNA) dysregulation is implicated in lymphoid malignancies. These findings highlight miRNAs as crucial biomarkers for diagnosing, predicting prognosis, and guiding therapy in these cancers.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression.
  • Dysregulation of miRNAs is increasingly recognized in various cancers, including lymphoid malignancies.

Purpose of the Study:

  • To provide a comprehensive overview of the role of miRNA dysregulation in lymphoid malignancies.
  • To summarize recent advances in understanding miRNA involvement in these diseases.

Main Methods:

  • This review synthesizes findings from recent scientific literature.
  • It focuses on studies investigating miRNA aberrations and their pathogenetic implications.

Main Results:

  • Aberrations in the miRNome contribute to the development of malignant lymphoid phenotypes.
  • A new pathogenetic model involving miRNAs and genes like TP53 and ZAP-70 explains prognostic implications in B-cell chronic lymphocytic leukemia.
  • Recent studies have elucidated the role of miRNAs in lymphomas and acute lymphoblastic leukemias.

Conclusions:

  • MicroRNAs show significant potential as biomarkers for lymphoid malignancies.
  • These biomarkers have implications for diagnosis, prognosis, and predicting treatment response.

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...
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 ends...
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 ends...
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 (lncRNA)...
Lymphoid Cells and Tissues01:18

Lymphoid Cells and Tissues

Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...