[Research progress of protein tyrosine phosphatase SHP-2]

Hong-ke Cai1, Yong-chuan Deng

  • 1Department of Surgical Oncology, Zhejiang University School of Medicine, Hangzhou, China.

Insights

The phosphatase SHP-2 (PTPN11) is crucial in cell signaling and implicated in various cancers. Understanding its role in tumor development could reveal new anti-cancer treatment strategies.

Area of Science:

  • Molecular Biology
  • Oncology
  • Signal Transduction

Context:

  • SHP-2, encoded by PTPN11, is a key phosphatase in multiple intracellular signaling pathways.
  • Mutations in SHP-2 are frequently observed in various hematological malignancies and solid tumors.
  • Aberrant SHP-2 signaling contributes to oncogenesis.

Purpose:

  • To investigate the molecular mechanisms by which SHP-2 mutations drive cellular transformation.
  • To identify novel therapeutic targets for cancers associated with SHP-2 alterations.

Summary:

  • SHP-2 is a critical regulator of signaling pathways involved in cell growth and survival.
  • Specific PTPN11 mutations lead to constitutive SHP-2 activation, promoting uncontrolled cell proliferation and tumor formation.
  • The study focuses on dissecting the downstream events triggered by oncogenic SHP-2.

Impact:

  • Elucidating SHP-2's role in tumorigenesis may uncover new therapeutic strategies for leukemia and solid tumors.
  • Findings could lead to the development of targeted therapies aimed at inhibiting aberrant SHP-2 activity.
  • This research may improve our understanding of cancer development and inform future treatment approaches.

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...
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...
The JAK-STAT Signaling Pathway01:20

The JAK-STAT Signaling Pathway

Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
Phosphoinositides and PIPs01:42

Phosphoinositides and PIPs

Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
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: