Related Experiment Video

Updated: Jul 4, 2026

Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
07:23

Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification

Published on: December 3, 2016

Nitric oxide, C-type natriuretic peptide and cGMP as regulators of endochondral ossification

Cristina C Teixeira1, Hanga Agoston, Frank Beier

  • 1Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, NY 10010, USA. cristina.teixeira@nyu.edu

Developmental Biology
|June 3, 2008
PubMed

Insights

Nitric oxide (NO) and C-type natriuretic peptide (CNP) are vital for endochondral bone growth by regulating chondrocyte development. Their signaling pathway, involving cGMP-dependent kinase II (cGKII), is crucial for skeletal development.

Area of Science:

  • Skeletal Biology
  • Cell Signaling
  • Endocrinology

Background:

  • Endochondral bone growth relies on precise chondrocyte proliferation and differentiation.
  • The molecular mechanisms governing these processes remain incompletely understood.
  • Nitric oxide (NO) and C-type natriuretic peptide (CNP) have emerged as key regulators in cartilage development.

Purpose of the Study:

  • To review the current understanding of NO, CNP, and cGKII signaling in cartilage and endochondral bone development.
  • To elucidate the roles and mechanisms of these signaling molecules in skeletal growth.
  • To highlight the importance of the NO-CNP-cGMP-cGKII pathway in chondrogenesis.

Main Methods:

  • Literature review of studies investigating NO, CNP, and cGKII in cartilage and bone.
  • Analysis of signaling pathways involving cyclic guanosine monophosphate (cGMP).
  • Examination of the role of cGMP-dependent kinase II (cGKII) in endochondral ossification.

Main Results:

  • Both NO and CNP activate downstream signaling by stimulating cGMP synthesis.
  • cGMP-dependent kinase II (cGKII) is a critical mediator in the NO and CNP signaling cascade.
  • cGKII has been identified as essential for normal endochondral bone formation.

Conclusions:

  • The NO-CNP-cGMP-cGKII signaling pathway plays a fundamental role in regulating chondrocyte function during endochondral bone growth.
  • Understanding these mechanisms provides insights into potential therapeutic targets for skeletal disorders.
  • Further research is warranted to fully delineate the complexities of this pathway in skeletal development.

More Related Videos

Culturing and Measuring Fetal and Newborn Murine Long Bones06:58

Culturing and Measuring Fetal and Newborn Murine Long Bones

Published on: April 26, 2019

Laser Capture Microdissection of Mouse Embryonic Cartilage and Bone for Gene Expression Analysis09:20

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

Published on: December 18, 2019

Related Concept Videos

Nitric Oxide Signaling Pathway01:28

Nitric Oxide Signaling Pathway

Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure to...
Bone Formation by Endochondral Ossification01:24

Bone Formation by Endochondral Ossification

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...
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Paracrine Signaling01:21

Paracrine Signaling

Paracrine signaling allows cells to communicate with their immediate neighbors via secretion of signaling molecules. Such a signal can only trigger a response in nearby target cells because the signal molecules degrade quickly or are inactivated if not taken up. Prominent examples of paracrine signaling include nitric oxide signaling in blood vessels, synaptic signaling of neurons, the blood clotting system, tissue repair/wound healing, and local allergic skin reactions. Nitric oxide as a...
Growth of Cartilage and Bone Tissue01:27

Growth of Cartilage and Bone Tissue

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...