A Devil of a Transmissible Cancer

Area of Science:

• Veterinary Medicine
• Oncology
• Conservation Biology

Background:

• Devil facial tumor disease (DFTD) comprises two distinct transmissible cancers devastating Tasmanian devil populations.
• DFTD cancer cells originate from Schwann cells and transmit through biting, common during mating.

Purpose of the Study:

• To describe Devil facial tumor disease (DFTD) by drawing an analogy with the life cycles of parasites.
• To highlight similarities and differences between DFTD and parasitic organisms.

Main Methods:

• Review of existing literature on DFTD and parasite biology.
• Comparative analysis of DFTD transmission and lifecycle with parasitic organisms.
• Utilizing the Centers for Disease Control and Prevention (CDC) definition of a parasite.

Main Results:

• DFTD exhibits parasitic-like features, including living within a host and deriving resources at the host's expense.
• DFTD shares the transmissible nature common to many parasites.
• Unlike many parasites, DFTD cancer cells lack independent, vector-borne, or quiescent phases in their lifecycle.

Conclusions:

• The parasite life cycle analogy aids in understanding DFTD's unique transmission dynamics.
• Recognizing DFTD's parasitic-like characteristics is crucial for conservation efforts.
• Further research into DFTD's biological mechanisms can inform strategies against transmissible cancers.