Most cancers arise from oncogenic changes in the genomes of somatic cells, and while the cells may migrate by metastasis, they remain within that single individual. Natural transmission of cancer cells from one individual to another has been observed in two distinct cases in mammals (Tasmanian devils and dogs), but these are generally considered to be rare exceptions in nature. The discovery of transmissible cancer in soft-shell clams (Mya arenaria) suggested that this phenomenon might be more widespread. Here we analyse disseminated neoplasia in mussels (Mytilus trossulus), cockles (Cerastoderma edule), and golden carpet shell clams (Polititapes aureus) and find that neoplasias in all three species are attributable to independent transmissible cancer lineages. In mussels and cockles, the cancer lineages are derived from their respective host species; however, unexpectedly, cancer cells in P. aureus are all derived from Venerupis corrugata, a different species living in the same geographical area. No cases of disseminated neoplasia have thus far been found in V. corrugata from the same region. These findings show that transmission of cancer cells in the marine environment is common in multiple species, that it has originated many times, and that while most transmissible cancers are found spreading within the species of origin, cross-species transmission of cancer cells can occur.
Widespread transmission of independent cancer lineages within multiple bivalve species
Michael J. Metzger,A. Villalba,M. J. Carballal,D. Iglesias,J. Sherry,C. Reinisch,A. Muttray,S. Baldwin,S. Goff
Published 2016 in Nature
ABSTRACT
PUBLICATION RECORD
- Publication year
2016
- Venue
Nature
- Publication date
2016-06-05
- Fields of study
Biology, Medicine, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- cerastoderma edule
A cockle species analyzed for disseminated neoplasia in the study.
Aliases: cockles
- cross-species transmission
Transfer of cancer cells from one species to another.
- disseminated neoplasia
A systemic bivalve disease characterized by widespread proliferation of abnormal cells through the body.
- mytilus trossulus
A mussel species analyzed for disseminated neoplasia in the study.
Aliases: mussels
- polititapes aureus
A golden carpet shell clam species analyzed for disseminated neoplasia in the study.
Aliases: golden carpet shell clam
- transmissible cancer lineage
A clonal population of cancer cells capable of spreading between individual hosts.
Aliases: transmissible cancer
- venerupis corrugata
A bivalve species living in the same region and identified as the source species for cancer cells found in Polititapes aureus.
REFERENCES
Showing 1-35 of 35 references · Page 1 of 1