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Cell cycle regulators and bone: development and regeneration

Alisha Shaikh1, Austin A Wesner1, Mohanad Abuhattab1

  • 1Department of Biomedical Engineering, University of Wisconsin-Milwaukee, College of Engineering and Applied Sciences, 3200 N Cramer St, Milwaukee, WI, 53211, USA.

Cell & Bioscience
|February 22, 2023
PubMed

Insights

Cell cycle regulators like p21 and p27 are crucial for bone healing and development. Modulating these regulators shows promise for enhancing bone repair, especially in aged or osteoporotic individuals.

Area of Science:

  • Bone biology and regenerative medicine.
  • Cell cycle regulation and cancerogenesis.
  • Skeletal development and fracture healing.

Background:

  • Cell cycle regulators control cell proliferation, differentiation, apoptosis, and senescence.
  • Emerging evidence highlights the role of cell cycle regulators in bone development and healing.
  • Dysregulation of cell cycle processes is implicated in impaired bone repair.

Purpose of the Study:

  • To review the role of cell cycle regulators in bone healing and development.
  • To explore how modulating cell cycle regulators can impact osteoblasts, osteoclasts, and chondrocytes.
  • To identify therapeutic targets for improving bone repair in conditions like osteoporosis.

Main Methods:

  • Review of existing literature on cell cycle regulators in bone biology.
  • Analysis of studies investigating the effects of p21 deletion and p27 inhibition on bone repair.
  • Examination of the influence of cell cycle regulators on key bone cells.

Main Results:

  • Deletion of p21, a G1/S transition regulator, enhanced bone repair capacity in mice.
  • Inhibition of p27 was shown to increase bone mineral density and bone formation.
  • Cell cycle regulators significantly influence osteoblasts, osteoclasts, and chondrocytes.

Conclusions:

  • Cell cycle regulators play a critical role in bone development and healing.
  • Targeting cell cycle regulators like p21 and p27 offers potential therapeutic strategies for bone repair.
  • Understanding these mechanisms is vital for developing novel treatments for fractures in aged and osteoporotic patients.
Keywords:
BoneCell cycleRegenerationp21

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