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Related Concept Videos

The Tumor Microenvironment02:17

The Tumor Microenvironment

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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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Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
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Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
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Tumour Microenvironment in Skin Carcinogenesis.

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The tumor microenvironment supports cancer growth and spread. Understanding its specific characteristics in skin cancers like basal cell carcinoma, squamous cell carcinoma, and melanoma can reveal new therapeutic targets.

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Area of Science:

  • Oncology
  • Dermatology
  • Cancer Biology

Background:

  • The tumor microenvironment (TME) is crucial for tumor development, progression, and metastasis.
  • Tumor cells acquire pro-tumorigenic phenotypes through interactions within the TME.
  • Tumor progression results from a dynamic interplay between tumor cell-intrinsic properties and the TME.

Purpose of the Study:

  • To characterize the tumor microenvironment in specific skin cancers: basal cell carcinoma, squamous cell carcinoma, and cutaneous melanoma.
  • To identify common and distinct TME features across different skin cancer types.
  • To explore advanced techniques for evaluating the TME and their therapeutic implications.

Main Methods:

  • Review and synthesis of existing literature on TME characteristics in skin cancers.
  • Highlighting specific cellular components like tumor-associated macrophages and regulatory T lymphocytes.
  • Discussing molecular markers (e.g., macrophage migration inhibitory factor) and genetic variations (e.g., cancer-associated fibroblasts).
  • Introduction of non-invasive imaging techniques like reflectance confocal microscopy for TME evaluation.

Main Results:

  • Common TME features in skin cancers include tumor-associated macrophages and regulatory T lymphocytes.
  • Distinct TME characteristics exist among different skin cancer types, such as specific markers in melanoma and diverse genetic profiles in squamous cell carcinoma fibroblasts.
  • Non-invasive imaging techniques can assess inflammatory infiltrates and cellular populations within skin tumors.

Conclusions:

  • The TME plays a vital role in skin cancer development and progression.
  • Understanding the specific TME composition of different skin cancers is essential for targeted therapies.
  • Advanced imaging technologies offer promising avenues for in-depth TME analysis and the identification of novel therapeutic targets.