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Application of Retinoic Acid to Obtain Osteocytes Cultures from Primary Mouse Osteoblasts
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The endocannabinoid system and retinoic acid signaling combine to influence bone growth

Daniel Fraher1, Robert J Mann1, Matthew J Dubuisson2

  • 1Metabolic Genetic Diseases Laboratory, Metabolic Research Unit, Deakin University School of Medicine, Geelong, VIC, 3216, Australia.

Molecular and Cellular Endocrinology
|April 11, 2021
PubMed

Insights

This study explores how retinoic acid (RA) and endocannabinoid system (ECS) pathways affect bone growth. Combining RA enhancement and ECS reduction shows promise for osteoporosis therapeutics by promoting bone formation and reducing osteoclast activity.

Area of Science:

  • Bone Biology and Development
  • Pharmacology and Therapeutics
  • Endocrinology

Background:

  • Osteoporosis presents a growing global health challenge, necessitating novel therapeutic strategies.
  • The retinoic acid (RA) and endocannabinoid system (ECS) signaling pathways are implicated as potential targets for osteoporosis treatment.
  • Understanding the specific roles of RA and ECS in bone development and maturation is crucial for therapeutic development.

Purpose of the Study:

  • To investigate the influence of retinoic acid (RA) and endocannabinoid system (ECS) signaling on bone development and maturation.
  • To assess the impact of modulating RA and ECS pathways on osteoclast activity.
  • To explore the potential of combining RA and ECS modulators for osteoporosis treatment.

Main Methods:

  • Utilized zebrafish as a model organism to study bone development.
  • Administered chemical treatments to modulate RA and ECS pathways at different developmental stages (early, intermediate, late).
  • Quantified osteoclast activity in zebrafish and medaka models.

Main Results:

  • Modulating RA and ECS pathways at distinct developmental times influenced bone growth.
  • Enhancing RA signaling or reducing ECS activity promoted bone formation.
  • Combined sub-optimal doses of RA and ECS modulators decreased osteoclast abundance and activity.

Conclusions:

  • Retinoic acid (RA) signaling and the endocannabinoid system (ECS) play significant roles in bone development and maturation.
  • Combined, sub-optimal doses of RA and ECS modulators can effectively influence bone growth and osteoclast activity.
  • These pathways represent promising therapeutic targets for developing novel osteoporosis treatments.
Keywords:
EndocannabinoidMedakaOsteoblastOsteoclastRetinoic acidZebrafish

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