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Related Experiment Video

Updated: May 10, 2026

Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis

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Published on: May 26, 2021

Chemerin neutralization blocks hematopoietic stem cell osteoclastogenesis.

Shanmugam Muruganandan¹, Helen J Dranse, Jillian L Rourke

¹Department of Pharmacology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.

Stem Cells (Dayton, Ohio)

|June 15, 2013

Summary

Chemerin protein is essential for hematopoietic stem cell (HSC) osteoclastogenesis, regulating differentiation via intracellular calcium and NFAT2 signaling. Blocking chemerin prevents osteoclast formation, highlighting its crucial role in bone remodeling.

Keywords:

Antibody CMKLR1 Chemerin Hematopoietic stem cell NFAT2 Osteoclast

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Area of Science:

Cell Biology
Immunology
Biochemistry

Background:

Bone remodeling involves osteoblasts and osteoclasts.
Chemerin, a protein activating CMKLR1, influences MSC differentiation.
Hematopoietic stem cells (HSCs) are precursors for osteoclasts.

Purpose of the Study:

To investigate the role of chemerin in HSC osteoclastogenesis.
To elucidate the mechanism by which chemerin regulates osteoclast formation.

Main Methods:

HSCs and RAW264.7 cells were used to study osteoclastogenesis.
Chemerin neutralization with blocking antibodies was employed.
Gene expression, matrix resorption, and NFAT2 signaling were analyzed.

Main Results:

HSCs express and secrete chemerin and CMKLR1.
Chemerin neutralization significantly inhibited HSC osteoclastogenesis.
Chemerin blockade reduced early signaling molecules and NFAT2 induction.
Restoring chemerin rescued osteoclast differentiation.

Conclusions:

Chemerin plays a critical autocrine/paracrine role in HSC osteoclast differentiation.
Chemerin signaling is essential for regulating intracellular calcium and NFAT2 activation during osteoclastogenesis.
These findings reveal a novel mechanism in bone remodeling.