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Updated: Jun 10, 2025

A Simple Pit Assay Protocol to Visualize and Quantify Osteoclastic Resorption In Vitro
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Stage-specific modulation of multinucleation, fusion, and resorption by the long non-coding RNA DLEU1 and miR-16 in

Sara Reis Moura1,2,3, Ana Beatriz Sousa1,2,3, Jacob Bastholm Olesen4,5,6

  • 1i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.

Cell Death & Disease
|October 10, 2024
PubMed

Insights

Novel non-coding RNAs, DLEU1 and miR-16, show potential for treating bone diseases by modulating osteoclast activity and bone resorption. These molecules offer new therapeutic targets for skeletal conditions.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Osteoclasts are crucial for bone resorption, and their modulation is key in preventing bone diseases.
  • There is a need for new anti-resorption agents beyond current therapies.

Purpose of the Study:

  • To investigate non-coding RNAs (ncRNAs) DLEU1 and miR-16 as novel therapeutic targets for modulating osteoclast function.
  • To elucidate the distinct mechanisms by which DLEU1 and miR-16 affect osteoclastogenesis and bone resorption.

Main Methods:

  • Investigated the role of DLEU1 and miR-16 in osteoclast differentiation and fusion using cell culture models.
  • Analyzed the impact of DLEU1 and miR-16 on osteoclast formation, nuclearity, and bone resorption.
  • Utilized techniques to assess cell fusion, monocyte differentiation, and resorption pit formation.

Main Results:

  • DLEU1 silencing impaired osteoclast fusion by affecting the phagocytic cup modality and reducing fusion events.
  • miR-16 influenced monocyte differentiation, impacting osteoclast formation but not nuclear number at early stages.
  • Both ncRNAs affected resorption speed in pit-forming osteoclasts; increased miR-16 also reduced trench formation and resorbed area.

Conclusions:

  • DLEU1 and miR-16 represent promising ncRNA targets for developing novel therapies against bone-related diseases.
  • These ncRNAs offer distinct pathways to control osteoclastogenesis and bone resorption, providing versatile therapeutic strategies.
  • Targeting DLEU1 and miR-16 could ameliorate bone destruction in various skeletal pathologies.

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