SOURCE: Taconic

December 09, 2010 10:00 ET

Taconic to Distribute Transposagen's FatRat™ Obesity Model

World's Only Mc4r Knockout Rat Model to Be Available Through Taconic

HUDSON, NY--(Marketwire - December 9, 2010) - Taconic, a leading global provider of research models and services, and Transposagen Biopharmaceuticals, Inc. (Transposagen), the worldwide leader in genetically modified rats, announced today that they have entered into a non-exclusive marketing and distribution agreement. Under the agreement, Taconic will produce and distribute Transposagen's FatRat™.

The FatRat™ is Transposagen's Mc4r TGEM™ Rat Model, which has a mutation in the melanocortin 4 receptor (Mc4r), the gene most commonly involved in monogenic human obesity. Mc4r is normally activated by leptin, a protein produced by another obesity gene, which results in an inhibition in feeding and a reduction in the ability to store calories as fat. However, the FatRat™, as well as humans with mutations in Mc4r, lacks the satiation that normally occurs with eating. In a study comparing the eating habits of humans with Mc4r mutations to those without Mc4r mutations, all Mc4r deficient participants reported "binge eating" while only 14.2% who lack the mutation reported such eating behavior (1). The Mc4r TGEM™ Rat Model, develops obesity due to hyperphagia (overeating), as well as hyperinsulinemia and elevated leptin levels.

The Mc4r model will be available for purchase directly from Taconic in 2011. "Taconic brings high quality standards and has a worldwide distribution network. Taconic will produce the model to excellent health standards and in sufficient quantities for research use," says Jack Crawford, Business Development Manager at Transposagen. "Our collaborators and customers are currently using the FatRat™ Model in a wide variety of obesity studies, from discovering new therapeutic compounds to developing improved bariatric surgery techniques," added Mr. Crawford.

"Our FatRat™ Model, developed and characterized in collaboration with Dr. Edwin Cuppen's laboratory at the Hubrecht Institute, is an example of the new and sophisticated animal models of human disease that are now available (2)," said Dr. Eric Ostertag, the President and CEO of Transposagen. "Obesity is now a global epidemic, with an estimated 300 million people worldwide who fit the medical definition of obese. The FatRat™ Model will allow researchers to better understand obesity in humans and begin to develop treatments to combat this epidemic."

"The FatRat™ is an excellent addition to Taconic's existing portfolio of mouse and rat models and will complement other obesity animal models, such as the Levin rat or the diet induced obese C57BL/6 mouse," said Paul Rounding, Senior Vice President & General Manager of Translational Models & Solutions, Taconic. "We are pleased to facilitate the distribution of relevant models such as the Mc4r knockout rat to our pharmaceutical, biotech and academic customers." 

About Taconic
Taconic is a leading provider of life sciences solutions to researchers worldwide, offering innovative lab animal models and scientific services that facilitate in vivo studies and advance drug discovery. Taconic's wide range of advanced solutions include custom model design, generation and production, imaging, off-the-shelf model repositories, compound profiling, contract research, contract breeding, genetic monitoring and health testing. Headquartered in New York's Hudson River Valley, Taconic operates seven breeding facilities and three service laboratories in the U.S. and Europe and maintains a staff of over 1,000 scientific specialists committed to technological innovation. Additional information about Taconic is available at

About Transposagen Biopharmaceuticals
Transposagen Biopharmaceuticals, Inc., a Lexington, KY based company, is the worldwide leader in the creation of unique genetically modified rat models. The company's signature products, TKO™ Knockout Rat Models and TGEM™ Rat Models, mimic human diseases and are used for drug discovery and development research. The company also creates custom transgenic rat models to customer specifications. For more information or to request a custom rat model, visit

1) Branson et al (2003) New England Journal Of Medicine. 348 (12). 

2) Van Boxtel et al. (2010) The Journal of Pharmacogenomics. June 8. 1-11.

Contact Information

  • For Taconic media inquiries:
    Susan Fogt
    Marketing Communications

    For Transposagen media inquiries:
    Jack Crawford
    145 Graham Ave.
    ASTeCC Bldg., Suite A217
    Lexington, KY 40506