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Related Experiment Video

Updated: Jun 17, 2026

Laser Capture Microdissection of Mouse Embryonic Cartilage and Bone for Gene Expression Analysis

Laser Capture Microdissection of Mouse Embryonic Cartilage and Bone for Gene Expression Analysis

Published on: December 18, 2019

FGF-23 in bone biology.

Katherine Wesseling-Perry¹

¹Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA. kwesseling@mednet.ucla.edu

Pediatric Nephrology (Berlin, Germany)

|December 17, 2009

Summary

Fibroblast growth factor 23 (FGF-23) increases with declining kidney function, impacting mineral and bone disorders in chronic kidney disease (CKD). Early CKD stages show dysregulated FGF-23 and DMP1 in bone, central to altered skeletal mineralization.

Area of Science:

Nephrology
Endocrinology
Bone Biology

Background:

Fibroblast growth factor 23 (FGF-23) is a key regulator of phosphorus and vitamin D metabolism.
Elevated FGF-23 levels correlate with declining renal function in chronic kidney disease (CKD).
FGF-23 and its regulators, DMP1 and matrix extracellular phosphoglycoprotein, are primarily produced in osteocytes within bone.

Purpose of the Study:

To investigate the role of FGF-23 and its regulators in the early stages of CKD.
To understand the connection between FGF-23, DMP1, and skeletal mineralization alterations in pediatric CKD patients.

Main Methods:

Analysis of FGF-23 and DMP1 expression in pediatric CKD patients.
Correlation of protein expression with skeletal mineralization status.

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Main Results:

FGF-23 levels rise significantly as renal function declines in CKD.
Skeletal expression of FGF-23 and its regulator DMP1 are increased in early CKD stages.
Increased expression of these proteins is associated with altered skeletal mineralization.

Conclusions:

Dysregulation of osteocytic FGF-23 and DMP1 occurs early in CKD.
Altered bone and mineral metabolism in CKD patients is centrally linked to these osteocytic proteins.
Osteocytes play a critical role in regulating skeletal mineralization, which is disrupted in CKD.