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Transducer Mechanism: Nuclear Receptors01:31

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Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
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Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
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Nuclear receptors in osteoclasts.

Seyeon Bae1, Steven Zeng2, Kyung-Hyun Park-Min3

  • 1Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021, USA; Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA.

Current Opinion in Pharmacology
|June 23, 2020
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Summary
This summary is machine-generated.

Nuclear receptors regulate bone remodeling by osteoclasts. Understanding their roles is crucial for treating bone diseases and avoiding side effects from synthetic nuclear receptor ligands.

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Area of Science:

  • Bone biology and cellular mechanisms
  • Endocrinology and molecular signaling

Background:

  • Osteoclasts are key bone-resorbing cells involved in physiological and pathological bone remodeling.
  • Nuclear receptors are critical transcription factors regulating metabolism, development, and inflammation.
  • Synthetic nuclear receptor ligands can cause dysregulated bone phenotypes, highlighting the need for research.

Purpose of the Study:

  • To explore the roles of nuclear receptors in osteoclast biology.
  • To elucidate the molecular mechanisms of nuclear receptor action in osteoclasts.
  • To review recent advancements in understanding nuclear receptors' impact on bone cells.

Main Methods:

  • Literature review of recent research on nuclear receptors and osteoclasts.
  • Analysis of studies investigating the physiological and pathological roles of nuclear receptors in bone.
  • Synthesis of findings on molecular mechanisms and therapeutic implications.

Main Results:

  • Nuclear receptors significantly influence osteoclast differentiation and function.
  • Specific nuclear receptors are implicated in bone diseases like osteoporosis and metastasis.
  • Understanding these roles is vital for developing targeted therapies.

Conclusions:

  • Nuclear receptors are critical regulators of osteoclast activity.
  • Further research into nuclear receptor mechanisms in osteoclasts is essential for bone health.
  • This knowledge can guide the development of safer therapeutic strategies for bone disorders.