A Genetic Porcine Model of Cancer.

Published

Journal Article

The large size of the pig and its similarity in anatomy, physiology, metabolism, and genetics to humans make it an ideal platform to develop a genetically defined, large animal model of cancer. To this end, we created a transgenic "oncopig" line encoding Cre recombinase inducible porcine transgenes encoding KRASG12D and TP53R167H, which represent a commonly mutated oncogene and tumor suppressor in human cancers, respectively. Treatment of cells derived from these oncopigs with the adenovirus encoding Cre (AdCre) led to KRASG12D and TP53R167H expression, which rendered the cells transformed in culture and tumorigenic when engrafted into immunocompromised mice. Finally, injection of AdCre directly into these oncopigs led to the rapid and reproducible tumor development of mesenchymal origin. Transgenic animals receiving AdGFP (green fluorescent protein) did not have any tumor mass formation or altered histopathology. This oncopig line could thus serve as a genetically malleable model for potentially a wide spectrum of cancers, while controlling for temporal or spatial genesis, which should prove invaluable to studies previously hampered by the lack of a large animal model of cancer.

Full Text

Cited Authors

  • Schook, LB; Collares, TV; Hu, W; Liang, Y; Rodrigues, FM; Rund, LA; Schachtschneider, KM; Seixas, FK; Singh, K; Wells, KD; Walters, EM; Prather, RS; Counter, CM

Published Date

  • January 2015

Published In

Volume / Issue

  • 10 / 7

Start / End Page

  • e0128864 -

PubMed ID

  • 26132737

Pubmed Central ID

  • 26132737

Electronic International Standard Serial Number (EISSN)

  • 1932-6203

International Standard Serial Number (ISSN)

  • 1932-6203

Digital Object Identifier (DOI)

  • 10.1371/journal.pone.0128864

Language

  • eng