Related Experiment Video

Updated: Jul 19, 2026

Effect of Anti-c-fms Antibody on Osteoclast Formation and Proliferation of Osteoclast Precursor In Vitro
07:51

Effect of Anti-c-fms Antibody on Osteoclast Formation and Proliferation of Osteoclast Precursor In Vitro

Published on: March 18, 2019

Interferon-beta modulates bone-associated cytokines and osteoclast precursor activity in multiple sclerosis patients

Bianca Weinstock-Guttman1, Jianming Hong, Roseane Santos

  • 1Jacobs Neurological Institute, Buffalo General Hospital, Buffalo, NY 14203, USA.

Multiple Sclerosis (Houndmills, Basingstoke, England)
|November 8, 2006
PubMed
Abstract

Insights

Interferon-beta-1a (IFN-beta-1a) treatment impacts bone density in multiple sclerosis (MS) patients by altering key bone-modulating proteins like RANKL and OPG. This study reveals complex, time-dependent molecular changes influencing bone homeostasis during MS treatment.

Area of Science:

  • Neuroimmunology
  • Bone Biology
  • Pharmacodynamics

Background:

  • Multiple sclerosis (MS) patients exhibit an elevated risk of reduced bone density.
  • Understanding the molecular mechanisms of bone homeostasis is crucial for managing MS complications.

Purpose of the Study:

  • To investigate the molecular mechanisms influencing bone homeostasis in MS patients treated with interferon-beta-1a (IFN-beta-1a).
  • To analyze the effects of IFN-beta-1a on the bone-modulating system involving receptor activator of nuclear factor-kappaB (RANK), RANK ligand (RANKL), and osteoprotegerin (OPG).

Main Methods:

  • Open-label pharmacodynamic study involving peripheral blood sampling from MS patients before and after IFN-beta-1a injection.
  • Analysis of RANKL, TRAIL, OPG, and MIP-1 alpha/beta expression.
  • Assessment of osteoclast precursor differentiation and measurement of bone formation/degradation markers (osteocalcin, C-telopeptides).

Main Results:

  • IFN-beta-1a modulated OPG and RANKL levels in a time-dependent manner, with initial decreases and subsequent increases in OPG, and peak RANKL at 8 hours.
  • Increased levels of macrophage inflammatory protein-1beta (MIP-1beta), a factor promoting osteolysis, were observed.
  • Osteocalcin levels, lower in MS patients, increased after one year of treatment, and ex vivo IFN-beta reduced osteoclast-like cell formation.

Conclusions:

  • IFN-beta-1a treatment induces intricate, specific, and time-dependent alterations in proteins and mRNAs associated with bone homeostasis in MS patients.
  • These findings highlight the complex interplay between MS treatment and bone metabolism.

Related Concept Videos

Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
TGF - β Signaling Pathway01:16

TGF - β Signaling Pathway

The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors are of three kinds RI, RII, and RIII. The RI...
Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
Regulation of Hematopoietic Stem Cells01:01

Regulation of Hematopoietic Stem Cells

All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...