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Canonical Wnt Signaling Pathway

Canonical Wnt Signaling Pathway

The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which results in tumor...

Canonical Wnt Signaling Pathway

Canonical Wnt Signaling Pathway

The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which results in tumor...

Non-Canonical Wnt Signaling Pathways

Non-Canonical Wnt Signaling Pathways

Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...

Non-Canonical Wnt Signaling Pathways

Non-Canonical Wnt Signaling Pathways

Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...

Regulation of Angiogenesis and Blood Supply

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...

Role Of Notch Signalling In Intestinal Stem Cell Renewal

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...

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Related Experiment Video

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Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis

Published on: June 3, 2016

Adipogenesis and WNT signalling.

Constantinos Christodoulides¹, Claire Lagathu, Jaswinder K Sethi

¹Institute of Metabolic Science, MRC Centre for Obesity and Associated Diseases, Biochemistry, University of Cambridge, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK. constantinos.christodoulides@orh.nhs.uk

Trends in Endocrinology and Metabolism: TEM

|November 15, 2008

Summary

Obesity and insulin resistance may stem from adipose tissue's limited ability to grow. Targeting WNT signaling offers a potential therapeutic strategy for metabolic complications.

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Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis

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Expansion and Adipogenesis Induction of Adipocyte Progenitors from Perivascular Adipose Tissue Isolated by Magnetic Activated Cell Sorting

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Semi-Automated Isolation of the Stromal Vascular Fraction from Murine White Adipose Tissue Using a Tissue Dissociator

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Area of Science:

Cell Biology
Metabolic Research
Endocrinology

Background:

Obesity is linked to insulin resistance, potentially due to adipose tissue expansion limits.
Adipose tissue growth relies on mesenchymal precursor cell differentiation into adipocytes.
This process is regulated by cellular communication and energy demands.

Purpose of the Study:

To review the role of WNT signaling in regulating adipogenesis.
To explore WNT pathway manipulation as a therapeutic target for obesity-associated metabolic dysfunction.

Main Methods:

Literature review of recent reports on WNT signaling and adipogenesis.
Analysis of WNT pathway's involvement in adipose tissue maintenance and remodeling.

Main Results:

WNT signaling is implicated in regulating adipogenesis.
The WNT pathway plays a role in mediating adipose cell communication.
Evidence suggests WNT signaling influences adipocyte growth and differentiation.

Conclusions:

Dysfunctional adipose tissue expansion may contribute to insulin resistance.
WNT signaling is a key regulator of adipogenesis.
Modulating the WNT pathway presents a promising drug-development avenue for metabolic disorders.