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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...
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Methods to Investigate the Regulatory Role of Small RNAs and Ribosomal Occupancy of Plasmodium falciparum
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MicroRNAs and Malaria - A Dynamic Interaction Still Incompletely Understood.

Amy Cohen1, Valéry Combes1, Georges Er Grau1

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Small RNAs, including microRNAs (miRNAs), are increasingly recognized for their role in malaria pathogenesis and resistance. Further research into these molecules could unlock new therapeutic strategies for this persistent infectious disease.

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Area of Science:

  • Molecular parasitology
  • RNA biology
  • Infectious diseases

Background:

  • Malaria, a significant global health threat, particularly impacting children, is caused by Plasmodium parasites.
  • The complex pathogenesis of malaria, especially severe forms, is not fully understood, limiting effective treatment development.
  • Small non-coding RNAs, such as microRNAs (miRNAs), are emerging as critical regulators in various biological processes, including infectious diseases.

Purpose of the Study:

  • To review existing literature on the presence and function of microRNAs in malaria.
  • To elucidate the specific roles of microRNAs in malaria parasite, vector, and host interactions.
  • To explore the potential of microRNAs as therapeutic targets for malaria treatment.

Main Methods:

  • Literature review of independent studies investigating microRNAs in malaria.
  • Analysis of identified microRNAs within the malaria parasite, Anopheles mosquito vector, and human host.
  • Synthesis of findings on the functional implications of microRNAs in disease progression and resistance.

Main Results:

  • Evidence confirms the presence of microRNAs in the malaria parasite, vector, and host.
  • Specific microRNAs are implicated in modulating the host immune response and parasite development.
  • MicroRNAs show potential in influencing malaria pathogenesis and drug resistance.

Conclusions:

  • MicroRNAs represent a novel class of molecules involved in malaria.
  • Understanding microRNA functions offers new avenues for malaria control and treatment strategies.
  • Targeting microRNAs may provide innovative therapeutic approaches to combat malaria.