Apelin facilitates integrin αvβ3 production and enhances metastasis in prostate cancer by activating STAT3 and inhibiting miR-8070

  • 0School of Post-Baccalaureate Chinese Medicine, Tzu Chi University, Hualien, Taiwan.

Summary

This summary is machine-generated.

Apelin elevates integrin αvβ3 in prostate cancer, driving metastasis. Inhibiting apelin reduces tumor spread, suggesting the apelin/integrin pathway as a therapeutic target for advanced prostate cancer.

Area Of Science

  • Oncology
  • Molecular Biology
  • Cell Biology

Background

  • Prostate cancer is a leading cancer in men, frequently metastasizing in advanced stages.
  • Integrins are cell surface receptors crucial for cell adhesion and migration.
  • Apelin, an adipokine, is linked to cancer progression, but its role in prostate cancer metastasis via integrin regulation is unclear.

Purpose Of The Study

  • To investigate the role of apelin in regulating integrin expression and prostate cancer cell migration.
  • To elucidate the molecular mechanisms underlying apelin-mediated prostate cancer metastasis.
  • To evaluate the therapeutic potential of targeting the apelin/integrin axis in metastatic prostate cancer.

Main Methods

  • Quantitative analysis of apelin and integrin αvβ3 expression in prostate cancer tissues.
  • In vitro studies assessing the effect of apelin stimulation on prostate cancer cell migration.
  • Investigation of signaling pathways including MAPK, STAT3, and miR-8070.
  • In vivo studies using animal models to assess the impact of apelin inhibition on metastasis.

Main Results

  • Apelin and integrin αvβ3 expression are upregulated in prostate cancer tissues.
  • Apelin enhances integrin αvβ3-dependent prostate cancer cell migration.
  • Apelin-induced integrin synthesis and cell motility are mediated by MAPK pathway activation and miR-8070 inhibition.
  • Inhibition of apelin reduces integrin αvβ3 expression and prostate cancer metastasis in vivo.

Conclusions

  • The apelin/integrin αvβ3 axis plays a significant role in promoting prostate cancer cell migration and metastasis.
  • Targeting the apelin signaling pathway offers a potential therapeutic strategy for inhibiting prostate cancer metastasis.

Related Concept Videos

Intracellular Signaling Affects Focal Adhesions 01:17

2.8K

Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...

Activation of Integrins 01:15

3.6K

Integrins bind ligands and transmit information from outside the cell to inside or vice-versa through an "outside-in signaling" or "inside-out signaling."
In "outside-in signaling," external factors in the extracellular space bind to exposed ligand binding sites on integrins. This causes the inactive protein to undergo a conformational change to become active. Integrins are often clustered on the cell membrane. Repetitive and regularly spaced ligand binding...

The JAK-STAT Signaling Pathway 01:20

9.3K

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...

Regulation of Angiogenesis and Blood Supply 01:24

2.7K

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...

Integrins 01:10

4.2K

Animal and protozoan cells do not have cell walls to help maintain shape and provide structural stability. Instead, these eukaryotic cells secrete a sticky mass of carbohydrates and proteins into the spaces between adjacent cells. This network of proteins and molecules is called an extracellular matrix or ECM.
Some ECM proteins assemble into a basement membrane to which the remaining components adhere. Proteoglycans typically form the bulk of the ECM while fibrous proteins, like collagen,...

Canonical Wnt Signaling Pathway 02:54

9.0K

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...