Protein Phosphatases-A Touchy Enemy in the Battle Against Glioblastomas: A Review

Arata Tomiyama1,2, Tatsuya Kobayashi3,4,5, Kentaro Mori6

  • 1Division of Brain Tumor Translational Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan. atomiyam@outlook.jp.

Cancers
|February 23, 2019
PubMed

Insights

Glioblastoma (GBM) remains deadly due to difficult resection and treatment resistance. This review highlights protein phosphatases, which regulate cancer signaling, as potential new therapeutic targets for GBM.

Area of Science:

  • Neuro-oncology
  • Molecular Biology
  • Cancer Signaling

Background:

  • Glioblastoma (GBM) is the most prevalent and lethal primary brain tumor.
  • Current treatments face challenges due to incomplete tumor resection and resistance to chemoradiotherapy.
  • Despite advances in understanding GBM molecular signaling, targeted therapies have yielded unsatisfactory results.

Purpose of the Study:

  • To review and summarize the critical roles of protein phosphatases in regulating oncogenic signaling pathways in GBM.
  • To highlight the potential of phosphatases as novel therapeutic targets for glioblastoma.

Main Methods:

  • Literature review of recent studies on GBM molecular signaling.
  • Analysis of research on protein phosphatases and their function in cancer.
  • Synthesis of information on phosphatases involved in GBM oncogenesis.

Main Results:

  • Protein phosphatases antagonize phosphorylation signaling, crucial for cancer cell regulation.
  • Deregulation of specific phosphatases has been implicated in GBM tumorigenesis.
  • Understanding phosphatase-mediated signaling is key to developing new GBM therapies.

Conclusions:

  • Protein phosphatases play significant roles in GBM cell signaling and tumor growth.
  • Targeting specific phosphatases represents a promising strategy for novel adjuvant therapies in glioblastoma.
  • Further elucidation of phosphatase mechanisms is essential for therapeutic application in GBM.

Related Concept Videos

Protein Kinases and Phosphatases02:54

Protein Kinases and Phosphatases

Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
15.1K
Protein Kinases and Phosphatases02:54

Protein Kinases and Phosphatases

4.5K
Review and Preview01:10

Review and Preview

In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
Percentiles are a type of fractile that partition data into...
8.4K
Review and Preview01:13

Review and Preview

Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
11.2K
Protein-protein Interfaces02:04

Protein-protein Interfaces

Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.7K
Protein and Protein Structure02:15

Protein and Protein Structure

Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
87.4K