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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...

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Updated: Jun 26, 2026

Identifying Bone Marrow Microenvironmental Populations in Myelodysplastic Syndrome and Acute Myeloid Leukemia
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MicroRNA expression profiling in bone marrow: implications in hematological malignancies.

Ana Costa1, Catarina Osório, Sérgio Dias

  • 1Angiogenesis Laboratory, CIPM, Portuguese Institute of Oncology, Lisboa, Portugal.

Biotechnology Journal
|January 22, 2009
PubMed
Summary

MicroRNAs regulate gene expression in health and disease. This review covers microRNA roles in bone marrow diseases and normal blood cell development.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • MicroRNAs (miRNAs) are key regulators of gene expression.
  • They play critical roles in physiological processes like growth and differentiation.
  • Dysregulation of miRNAs is implicated in pathological conditions, including oncogenesis.

Purpose of the Study:

  • To review the involvement of miRNAs in bone marrow (BM) diseases.
  • To summarize the function of miRNAs in normal hematopoiesis.
  • To highlight the potential of miRNAs as diagnostic and prognostic biomarkers.

Main Methods:

  • Literature review of studies on miRNA function in hematopoiesis and BM diseases.
  • Analysis of research investigating miRNA profiles for disease prediction and classification.
  • Synthesis of findings on miRNA generation and mechanistic roles.

Main Results:

  • miRNAs are integral to normal bone marrow function and hematopoiesis.
  • Aberrant miRNA expression is associated with various bone marrow pathologies.
  • miRNA profiles show promise as biomarkers for disease outcome and diagnosis.

Conclusions:

  • MicroRNAs are crucial regulators in bone marrow function and disease.
  • Further research into miRNA biomarkers could revolutionize diagnostics and prognostics for BM disorders.
  • Understanding miRNA mechanisms is vital for developing targeted therapies.