Related Experiment Video

Updated: Jan 18, 2026

Skeletal Phenotype Analysis of a Conditional Stat3 Deletion Mouse Model
08:42

Skeletal Phenotype Analysis of a Conditional Stat3 Deletion Mouse Model

Published on: July 3, 2020

5.1K

Slit2 inhibits SRC-PI3K signaling pathway, regulates osteoclast differentiation of macrophages and reduces bone

Qing Ge1, Yaokun Zou1, Huizhi Deng1

  • 1Department of Oral Implantology, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction and Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China.

Frontiers in Cell and Developmental Biology
|September 12, 2025
PubMed

Insights

Slit2 protein was found to reduce bone loss and inhibit osteoclast differentiation in osteoporosis models. This suggests Slit2 may be a potential therapeutic target for treating osteoporosis.

Area of Science:

  • Bone Biology
  • Cell Signaling
  • Metabolic Disorders

Background:

  • Osteoporosis is characterized by imbalanced bone remodeling, with increased resorption and decreased formation.
  • Slit2, an axon guidance molecule, has known roles in the nervous system and kidneys, but its function in bone metabolism is largely unexplored.
  • Understanding Slit2's role in bone is crucial for developing new osteoporosis therapies.

Purpose of the Study:

  • To investigate the role of Slit2 in regulating bone metabolism and its potential as a therapeutic target for osteoporosis.
  • To elucidate the molecular mechanisms by which Slit2 influences osteoclast differentiation and bone resorption.

Main Methods:

  • Established aging-induced and ovariectomy-induced osteoporosis mouse models (wild-type and Slit2-transgenic).
  • Performed in vitro osteoclast differentiation assays using bone marrow-derived monocytes.
  • Utilized RNA sequencing, Gene Ontology analysis, and Western blotting to identify signaling pathways involved.

Main Results:

  • Slit2 administration attenuated bone loss and suppressed osteoclast differentiation in osteoporosis models.
  • Slit2 inhibited osteoclast-associated marker expression and macrophage differentiation into osteoclasts in vitro.
  • Src and PI3K/AKT signaling pathways were identified as key mediators of Slit2's effects on bone metabolism.

Conclusions:

  • Slit2 plays a protective role against bone loss in osteoporosis by inhibiting osteoclast differentiation and activity.
  • Slit2 exerts its effects by downregulating Src expression and suppressing the PI3K/AKT pathway in macrophages.
  • Slit2 represents a promising therapeutic target for the treatment of osteoporosis.
Keywords:
PI3K/AKT signalingSlit2Srcosteoclastsosteoporosis

More Related Videos

Stimulation of Notch Signaling in Mouse Osteoclast Precursors08:01

Stimulation of Notch Signaling in Mouse Osteoclast Precursors

Published on: February 28, 2017

8.3K
Isolation of Monocyte-Macrophage Lineage Cells from Rat Bones by Secondary Adherence Method04:19

Isolation of Monocyte-Macrophage Lineage Cells from Rat Bones by Secondary Adherence Method

Published on: July 13, 2022

4.2K

Related Concept Videos

The JAK-STAT Signaling Pathway01:20

The JAK-STAT Signaling Pathway

Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
12.2K
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a...
5.4K
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...
3.9K
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...
10.5K
Role Of Notch Signalling In Intestinal Stem Cell Renewal01:12

Role Of Notch Signalling In Intestinal Stem Cell Renewal

Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
2.4K
The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
8.3K