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Related Concept Videos

Type IV Collagen of Basal Lamina01:05

Type IV Collagen of Basal Lamina

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Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen  forms the backbone of the basement membrane by scaffolding with laminin, entactin, proteoglycans, and fibronectin. Apart from rendering structural support to the basement membrane, it also helps entail signaling potentials necessary for both pathological and physiological functions.
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Fibril-associated collagens are a type of collagens present in the extracellular matrix with interrupted triple helices or FACIT (Fibril-associated collagens interrupted triple-helices). FACIT help connect and attach the collagen fibrils with each other as well as with other proteins of the extracellular matrix.
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Updated: Oct 13, 2025

Preparation of 3D Collagen Gels and Microchannels for the Study of 3D Interactions In Vivo
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Collagen Linearization within Tumors.

Craig E Barcus1, Gregory D Longmore2

  • 1Department of Medicine (Oncology) and Department of Cell Biology and Physiology, ICCE Institute, Washington University, St. Louis, Missouri.

Cancer Research
|November 16, 2021
PubMed
Summary
This summary is machine-generated.

Tumor microenvironment

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Area of Science:

  • Oncology
  • Cancer Biology
  • Tumor Microenvironment Research

Background:

  • The tumor microenvironment (TME) significantly influences cancer progression, including invasion, migration, and therapeutic response.
  • The extracellular matrix (ECM) within the TME undergoes substantial remodeling during tumor development, impacting cancer biology.
  • Understanding ECM structural changes is crucial for developing targeted therapies against metastasis.

Purpose of the Study:

  • To investigate the role of WISP1 and WISP2 in regulating the tumor extracellular matrix (ECM).
  • To elucidate the mechanism by which WISP1/WISP2 ratio affects collagen fiber linearization and cancer metastasis.
  • To identify potential therapeutic strategies targeting ECM alterations in cancer.

Main Methods:

  • Analysis of the WISP1/WISP2 ratio in tumor tissues.
  • Investigating the direct binding of WISP2 to ECM collagen.
  • Assessing the impact of WISP1/WISP2 modulation on collagen linearization and tumor cell migration.

Main Results:

  • The ratio of WISP1 to WISP2 is critical for ECM collagen fiber linearization.
  • WISP2 directly binds to ECM collagen, inhibiting WISP1-mediated linearization.
  • Altered collagen linearization driven by WISP1/WISP2 imbalance promotes tumor metastasis.

Conclusions:

  • The WISP1/WISP2 ratio is a key regulator of ECM structure and function in the tumor microenvironment.
  • Targeting WISP1/WISP2 interactions offers a novel therapeutic approach to prevent or reverse ECM alterations.
  • Modulating collagen linearization presents a promising strategy to inhibit cancer metastasis.