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New model for studying germ cell tumors in testes enlists embryonic stem cells
Date:7/11/2011

Tampa, Fla. (July 11, 2011) A team of researchers from Spain and Switzerland have developed a new model for studying the development of testicular germ cell tumors by transplanting embryonic stem cells into the seminiferous tubules in mouse models, resulting in the development of testicular germ cell tumors (TGCT) that mimic the early stages of TGCT development. The study, published in Cell Transplantation (20:5), is now freely available on-line at http://www.ingentaconnect.com/content/cog/ct/.

"Over the last fifteen years, cell transplantation into seminiferous tubules has become a valuable tool for studying germinal cell biology," said the study's corresponding author Dr. Juan Arechaga of the University of Basque Country, Spain. "The blood-testes permeability barrier establishes a sealed compartment that protects against influences such as immunological rejection. Thus, our lab has developed a tumor assay to study the cancer invasion process in testicular germ cell tumors using embryonic stem cells injected into the seminiferous tubules."

According to Dr. Arechaga, the tumors generated by the transplantation of early embryos possess gene expressions and differentiation patterns similar to those in testicular germ cell tumors.

The researchers point out that testicular germ cell tumors are uncommon in non-human animals, so there have been no previously suitable animal models for study. However these tumors appear to be genetically regulated and the specific genes related to the development of this kind of tumor have been identified.

"Embryonic stem cell transplantation into mouse seminiferous tubules represents a model with very valuable potential applications because it mimics the pre-invasive state of TGCTs," said Dr. Arechaga. "Donor cells can be transfected with different transgenes before transplantation to evaluate certain genes during the invasive proce
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Contact: David Eve
celltransplantation@gmail.com
Cell Transplantation Center of Excellence for Aging and Brain Repair
Source:Eurekalert

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