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Evaluation of the Interplay Between the Complement Protein C1q and Hyaluronic Acid in Promoting Cell Adhesion
06:54

Evaluation of the Interplay Between the Complement Protein C1q and Hyaluronic Acid in Promoting Cell Adhesion

Published on: June 15, 2019

Interactome analysis reveals that C1QBP (complement component 1, q subcomponent binding protein) is associated with

Xiaofang Zhang1, Fei Zhang, Lin Guo

  • 1Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China;

Molecular & Cellular Proteomics : MCP
|August 9, 2013
PubMed

Insights

Complement component 1, q subcomponent binding protein (C1QBP) regulates cancer cell migration and metastasis. This study identifies C1QBP as a novel therapeutic target for breast cancer treatment.

Area of Science:

  • Molecular Biology
  • Proteomics
  • Cancer Research

Background:

  • Complement component 1, q subcomponent binding protein (C1QBP) is a ubiquitous protein involved in diverse cellular functions.
  • Understanding C1QBP's biological roles, particularly in cancer, requires detailed interactome analysis.

Purpose of the Study:

  • To identify C1QBP interacting proteins and construct its interactome network.
  • To investigate the role of C1QBP in cancer cell migration and metastasis.
  • To evaluate C1QBP as a potential therapeutic target for breast cancer.

Main Methods:

  • Proteomics analysis using an improved sample preparation and mass spectrometry strategy.
  • High-speed centrifugation, formaldehyde labeling, and 2D-reverse-phase liquid chromatography.
  • In vitro assays for cell chemotaxis and in vivo studies using a mouse model of breast cancer metastasis.

Main Results:

  • Identified 187 C1QBP interacting proteins and built a highly connected interactome network.
  • Demonstrated that C1QBP regulates protein kinase C ζ activity and modulates EGF-induced cancer cell chemotaxis.
  • Confirmed C1QBP's essential role in breast cancer metastasis and its overexpression in human breast cancer tissues, correlating with advanced stages.

Conclusions:

  • C1QBP is a novel regulator of cancer cell metastasis.
  • C1QBP's involvement in cell migration and its overexpression in breast cancer highlight its potential as a therapeutic target.

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