Expression profile and clinical significance of Wnt signaling in human gliomas

Hao Zhang1, Yanhua Qi1, Decheng Geng1

  • 1The Graduate School, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.

Oncology Letters
|February 2, 2018
PubMed

Insights

Wnt signaling molecules Wnt3a, Wnt5a, and their receptors are elevated in glioma, impacting patient prognosis. However, beta-catenin is not upregulated, suggesting alternative Wnt pathways drive glioma development.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Wnt signaling is crucial for tumor development.
  • Limited research exists on Wnt pathway components in glioma tissues.
  • Understanding Wnt signaling in glioma is vital for targeted therapies.

Purpose of the Study:

  • To investigate the expression patterns of core Wnt signaling molecules in glioma.
  • To determine the clinical relevance and prognostic impact of Wnt pathway components in glioma patients.
  • To elucidate the role of Wnt signaling in glioma development.

Main Methods:

  • Analysis of mRNA and protein expression levels of Wnt signaling components in glioma and non-tumor tissues.
  • Utilized the R2: Genomics Analysis and Visualization Platform for prognostic correlation.
  • Compared expression levels between tumor and normal tissues.

Main Results:

  • Elevated mRNA levels of Wnt3a, Wnt5a, frizzled 2, 6, and 7; decreased Wnt7b in glioma.
  • No significant difference in mRNA levels of beta-catenin, GSK3β, AXIN1, cyclin D1, and AXIN2.
  • Increased protein levels of Wnt2b, Wnt3a, and Wnt5a; unchanged beta-catenin, GSK3β, and cyclin D1 in gliomas.
  • Wnt2b, Wnt5a, frizzled 2, 6, and 7 expression correlated with glioma patient prognosis.

Conclusions:

  • Beta-catenin is not upregulated in gliomas.
  • Wnt signaling may promote glioma development through noncanonical or alternative pathways.
  • Specific Wnt pathway components have prognostic significance in glioma.

Related Concept Videos

Canonical Wnt Signaling Pathway02:54

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...
10.7K
Non-Canonical Wnt Signaling Pathways01:41

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...
8.5K
Statistical Significance01:50

Statistical Significance

Once data is collected from both the experimental and the control groups, a statistical analysis is conducted to find out if there are meaningful differences between the two groups. A statistical analysis determines how likely any difference found is due to chance (and thus not meaningful). In psychology, group differences are considered meaningful, or significant, if the odds that these differences occurred by chance alone are 5 percent or less. Stated another way, if we repeated this...
22.3K
Significance of Center of Mass01:12

Significance of Center of Mass

The center of mass of an object is defined as the mass-weighted average position of all the particles that comprise the object. The significance of the center of mass of an object can be seen by looking at its dynamics. The time derivative of the center of mass gives its velocity, assuming that the object's mass remains constant over time. Furthermore, the total linear momentum of an object can be seen as the linear momentum of a single particle of the object's total mass moving with...
7.8K
Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
1.5K
Significance Testing: Overview01:04

Significance Testing: Overview

Significance testing is a set of statistical methods used to test whether a claim about a parameter is valid. In analytical chemistry, significance testing is used primarily to determine whether the difference between two values comes from determinate or random errors. The effect of a particular change in the measurement protocol, analyst, or sample itself can cause a deviation from the expected result. In the case of a suspected deviation/outlier, we need to be able to confirm mathematically...
12.8K