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Related Concept Videos

TGF - β Signaling Pathway01:16

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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...
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Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
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Bone formation, or ossification, begins around the sixth to seventh week of embryonic development. Most bones develop from a cartilaginous template through the process of endochondral ossification. Cartilage formation begins when clusters of mesenchymal cells differentiate into chondrocytes. These chondrocytes proliferate rapidly and secrete an extracellular matrix that becomes encased in a membrane called the perichondrium. The resulting cartilage model provides a template that resembles the...
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The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
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The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
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Related Experiment Video

Updated: May 1, 2026

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TGFβ signaling in cartilage development and maintenance.

Weiguang Wang1, Diana Rigueur, Karen M Lyons

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Birth Defects Research. Part C, Embryo Today : Reviews
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Summary

Transforming growth factor beta (TGFβ) signaling is crucial for cartilage health. Recent mouse genetic studies reveal new insights into TGFβ regulation and crosstalk, potentially leading to osteoarthritis therapies.

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TGFβcartilagedevelopmentmaintenancesignaling

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Area of Science:

  • Biochemistry and Molecular Biology
  • Developmental Biology
  • Orthopedics

Background:

  • Transforming Growth Factor beta (TGFβ) superfamily members are vital for cartilage formation and maintenance.
  • The in vivo mechanisms of TGFβ signal transduction in cartilage are not fully understood.
  • Genetic studies link TGFβ superfamily components to skeletal development and osteoarthritis susceptibility.

Purpose of the Study:

  • To review recent genetic discoveries in mice concerning TGFβ signaling regulation in cartilage.
  • To explore the crosstalk between canonical and noncanonical TGFβ signaling pathways.
  • To identify potential therapeutic targets for maintaining articular cartilage health.

Main Methods:

  • Review of recent genetic studies in mouse models.
  • Analysis of mutations in TGFβ family members, receptors, and signaling components.
  • Examination of genome-wide association studies data.

Main Results:

  • Genetic studies in mice have elucidated TGFβ regulation in growth plate and articular cartilage.
  • Distinct modes of crosstalk between canonical and noncanonical TGFβ signaling pathways have been identified.
  • Insights into TGFβ signaling mechanisms provide a basis for understanding cartilage development and disease.

Conclusions:

  • Recent genetic findings offer a deeper understanding of TGFβ signaling in cartilage.
  • Knowledge of TGFβ pathway regulation and crosstalk may lead to novel osteoarthritis therapies.
  • Targeting TGFβ signaling presents new prospects for maintaining healthy articular cartilage.