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Related Concept Videos

Mouse Models of Cancer Study02:43

Mouse Models of Cancer Study

Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
Mouse Models of Cancer Study02:43

Mouse Models of Cancer Study

Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...

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Related Experiment Video

Updated: May 19, 2026

Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells
06:09

Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells

Published on: June 7, 2019

Origin of mouse melanomas.

Lionel Larue1

  • 1Centre de Recherche, Developmental Genetics of Melanocytes, Institut Curie, Orsay, France. lionel.larue@curie.fr

The Journal of Investigative Dermatology
|August 17, 2012
PubMed
Summary
This summary is machine-generated.

Human melanomas typically occur in the epidermis, while mouse melanomas are found in the dermis. However, mouse melanomas can be induced to develop in the epidermis, showing location at discovery doesn't always indicate origin.

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Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model
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Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model

Published on: September 7, 2013

Area of Science:

  • Dermatology
  • Oncology
  • Comparative Pathology

Background:

  • Melanoma, a significant skin cancer, exhibits distinct anatomical locations in humans versus mice.
  • Human melanomas predominantly arise in the epidermis, the outermost skin layer.
  • Murine melanomas are typically found in the dermis, the layer beneath the epidermis.

Purpose of the Study:

  • To investigate the influence of anatomical location on melanoma development and histological classification.
  • To compare the site-specific origins and progression of melanomas in humans and mice.
  • To determine if the discovered location of melanoma accurately reflects its initial cellular origin.

Main Methods:

  • Comparative histological analysis of melanoma samples from human and murine subjects.
  • Experimental induction of melanomas in specific skin layers (epidermis and dermis) in mouse models.
  • Microscopic examination to ascertain the precise location and cellular origin of developing melanomas.

Main Results:

  • A significant difference in the primary location of naturally occurring melanomas was observed between humans (epidermis) and mice (dermis).
  • Experimental manipulation successfully induced melanoma development in the epidermis of mice, challenging the species-specific localization.
  • Histological analysis revealed that the location where a melanoma is identified at the time of diagnosis does not definitively pinpoint the original site of the cancerous cell.

Conclusions:

  • The anatomical site of melanoma discovery in mice can be experimentally altered to mimic human epidermal localization.
  • Histological location alone is insufficient to determine the primary origin of melanoma cells.
  • Understanding species-specific differences and experimental induction models is crucial for melanoma research.