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Related Experiment Video

Updated: Jun 28, 2026

Stimulation of Notch Signaling in Mouse Osteoclast Precursors

Stimulation of Notch Signaling in Mouse Osteoclast Precursors

Published on: February 28, 2017

Periostin-like-factor in osteogenesis.

Shimei Zhu¹, Mary F Barbe, Cheng Liu

¹Department of Anatomy and Cell Biology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140, USA.

Journal of Cellular Physiology

|November 14, 2008

Summary

This summary is machine-generated.

Periostin-like-factor (PLF) promotes osteoblast proliferation and differentiation, enhancing bone formation in vivo. This study reveals PLF

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Area of Science:

Biochemistry
Cell Biology
Orthopedics

Background:

Periostin-like-factor (PLF), an isoform of Periostin, is expressed in bone and vascular cells.
PLF is detected in mesenchymal cells and osteoblasts, suggesting a role in osteogenesis.
PLF is secreted from osteoblasts, indicating its potential signaling function.

Purpose of the Study:

To investigate the role of PLF in osteoblast proliferation and differentiation in vitro.
To determine the effect of PLF on bone formation in vivo.
To examine PLF expression during fracture healing.

Main Methods:

In vitro studies using CyQUANT assay for proliferation and alkaline phosphatase staining/activity, von Kossa staining for mineralization.
In vivo studies involving adenovirus-mediated PLF overexpression in rat femur bone marrow.
Analysis of PLF expression in a fracture healing model.

Main Results:

Overexpression of PLF significantly increased osteoblast proliferation in vitro.
PLF promoted osteoblast differentiation, evidenced by increased alkaline phosphatase activity and calcium deposition.
In vivo, PLF overexpression led to enhanced bone formation in the femur marrow cavity.
PLF expression was upregulated in callus osteoblasts during fracture healing.

Conclusions:

PLF stimulates osteoblast proliferation and differentiation in vitro.
PLF enhances bone formation in vivo.
PLF plays a significant role in osteogenesis and fracture healing.