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The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
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A Mouse Model to Investigate the Role of Cancer-Associated Fibroblasts in Tumor Growth
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Published on: December 22, 2020

Connective tissue growth factor in tumor pathogenesis.

Annica Jacobson1, Janet L Cunningham2

  • 1Section of Osteoporosis and Clinical Pharmacogenetics, Department of Medical Sciences, Uppsala University, Uppsala, Sweden.

Fibrogenesis & Tissue Repair
|December 25, 2012
PubMed
Summary
This summary is machine-generated.

Connective tissue growth factor (CTGF) plays a dual role in cancer, promoting progression in some tumors like ileal carcinoids while suppressing others. Understanding CTGF

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Area of Science:

  • Oncology
  • Cell Biology
  • Biochemistry

Background:

  • Connective tissue growth factor (CTGF/CCN2) is crucial in wound healing, influencing myofibroblast differentiation and angiogenesis.
  • CTGF expression in tumors is linked to varied outcomes, acting as both a tumor suppressor and promoter across different cancer types.
  • The discrepancy in CTGF's role in cancer progression remains poorly understood.

Purpose of the Study:

  • To investigate the role of CTGF in the context of ileal carcinoids, a type of well-differentiated endocrine carcinoma.
  • To explore the phenotypic characteristics of ileal carcinoids and their potential association with CTGF functions.

Main Methods:

  • The study focuses on analyzing the known functions of CTGF and its expression patterns in various cancers.
  • Phenotypic characteristics of ileal carcinoids, such as cell migration and stromal response, are examined in relation to CTGF.

Main Results:

  • High CTGF expression is a defining feature of ileal carcinoids, which exhibit low proliferation but are malignant with frequent metastasis.
  • Ileal carcinoids display phenotypes consistent with CTGF functions: enhanced cell migration, suppressed apoptosis, and a rich myofibroblast stroma with fibrosis.
  • CTGF's presence in other endocrine tumors suggests a role in the progression of well-differentiated malignancies.

Conclusions:

  • CTGF is significantly implicated in the progression of ileal carcinoids and potentially other well-differentiated endocrine tumors.
  • The study highlights the complex and context-dependent role of CTGF in cancer, emphasizing its contribution to the aggressive nature of certain endocrine carcinomas.