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From Stem Cells to Bone-Forming Cells.

Samantha Donsante1,2, Biagio Palmisano1, Marta Serafini2

  • 1Department of Molecular Medicine, Sapienza University of Rome, Viale Regina 324, 00161 Rome, Italy.

International Journal of Molecular Sciences
|April 30, 2021
PubMed
Summary
This summary is machine-generated.

Osteoblasts are crucial bone-forming cells originating from diverse skeletal stem cells. This review details their identity, function, and the regulatory pathways governing osteogenic lineage specification.

Keywords:
bonebone marrow stromal cellsosteoblastsskeletal biologyskeletal stem cells

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Area of Science:

  • Cell Biology
  • Developmental Biology
  • Orthopedics

Background:

  • Bone formation is a continuous process throughout life, involving osteoblasts.
  • Osteoblasts are responsible for producing and mineralizing the bone matrix.
  • They also regulate other cellular and metabolic processes, including osteoclastogenesis and phosphate homeostasis.

Purpose of the Study:

  • To define the cellular identity and function of osteoblasts.
  • To discuss various populations of osteoprogenitor cells.
  • To review regulatory pathways in osteogenic lineage specification.

Main Methods:

  • Literature review of osteoblast biology.
  • Analysis of skeletal stem cell populations.
  • Examination of regulatory mechanisms in mouse models and human genetic diseases.

Main Results:

  • Osteoblasts arise from distinct embryonic skeletal stem cell populations.
  • Multiple regulators control osteogenic lineage specification.
  • Known and novel regulatory pathways are identified.

Conclusions:

  • Understanding osteoblast development and regulation is key to bone health.
  • Diverse stem cell origins and regulatory networks shape osteoblast populations.
  • Insights from mouse models and human diseases illuminate osteogenic lineage control.