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Related Concept Videos

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...
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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...
General Transcription Factors01:30

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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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Receptor Downregulation in MVBs

Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
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NF-κB-dependent Signaling Pathway02:26

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The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
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Related Experiment Video

Updated: Jun 12, 2026

Vasodilation of Isolated Vessels and the Isolation of the Extracellular Matrix of Tight-skin Mice
08:09

Vasodilation of Isolated Vessels and the Isolation of the Extracellular Matrix of Tight-skin Mice

Published on: March 24, 2017

IGF-IEc expression, regulation and biological function in different tissues.

Zhongquan Dai1, Feng Wu, Ella W Yeung

  • 1State Key Laboratory of Space Medicine Fundamentals and Application China Astronaut Research and Training Center, Beijing, China. daizhq77@163.com

Growth Hormone & IGF Research : Official Journal of the Growth Hormone Research Society and the International IGF Research Society
|May 25, 2010
PubMed
Summary

Mechano-growth factor (MGF), an Insulin-like Growth Factor I (IGF-I) variant, promotes tissue repair and regeneration in muscle and brain. This review explores MGF

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Related Experiment Videos

Last Updated: Jun 12, 2026

Vasodilation of Isolated Vessels and the Isolation of the Extracellular Matrix of Tight-skin Mice
08:09

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Published on: March 24, 2017

Separation of Rat Epidermis and Dermis with Thermolysin to Detect Site-Specific Inflammatory mRNA and Protein
08:45

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Published on: September 29, 2021

Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications
09:29

Isolation of Intermediate Filament Proteins from Multiple Mouse Tissues to Study Aging-associated Post-translational Modifications

Published on: May 18, 2017

Area of Science:

  • Molecular Biology
  • Cellular Biology
  • Biochemistry

Background:

  • Insulin-like Growth Factor I (IGF-I) is crucial for development, growth, and homeostasis.
  • IGF-I exhibits complex, tissue-specific functions and regulation.
  • Mechano-growth factor (MGF) is an IGF-I splice variant involved in local tissue repair.

Purpose of the Study:

  • To review the expression and regulation of Mechano-growth factor (MGF).
  • To elucidate the function of the MGF isoform in tissue protection and repair.
  • To discuss MGF's potential therapeutic applications.

Main Methods:

  • Literature review of studies on MGF expression, regulation, and function.
  • Analysis of MGF's role in response to mechanical stimuli and ischemia.
  • Examination of experimental animal studies investigating MGF's therapeutic potential.

Main Results:

  • MGF expression significantly increases in muscle, bone, and tendon after mechanical damage.
  • MGF acts as a neuroprotectant in brain ischemia and activates satellite cells for muscle regeneration.
  • MGF and its derivatives show promise as therapies for muscular dystrophy and cerebral hypoxia-ischemia.

Conclusions:

  • MGF is a critical IGF-I isoform with significant roles in tissue repair and protection.
  • While MGF's unique actions are recognized, detailed mechanisms require further investigation.
  • Continued research into MGF's expression, regulation, and function is essential for therapeutic development.