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Assessing gene function in the ruminant placenta.

R V Anthony¹, J D Cantlon, K C Gates

¹Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA. Russ.Anthony@Colostate.edu

Society of Reproduction and Fertility Supplement

|July 16, 2011

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Investigating specific gene functions in the placenta is challenging. New viral vector technologies in sheep offer a promising method for placenta-specific gene manipulation, advancing our understanding of placental development and function.

Area of Science:

Reproductive Biology
Developmental Biology
Genetics

Background:

The placenta is vital for nutrient/waste exchange, immune protection, and endocrine functions.
Assessing specific placental gene functions is difficult due to limitations in traditional genetic manipulation techniques.
The pregnant sheep is a valuable model for in vivo placental studies, but lacks efficient genetic tools.

Purpose of the Study:

To explore novel methods for assessing specific gene functions within the ruminant placenta.
To overcome limitations in genetic manipulation of the placenta in established animal models like sheep.
To investigate the potential of new biotechnologies for placental gene function studies.

Main Methods:

Utilizing primary trophoblast cell lines from sheep and cattle.

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Employing viral infection of trophoectoderm in hatched blastocysts for placenta-specific transgenesis.

Developing gene knockdown and potential gain-of-function experiments in the developing sheep conceptus.

Main Results:

Primary trophoblast cell lines are now available for sheep and cattle.
Viral-mediated gene transfer into the trophoectoderm has been successfully used for gene knockdown in sheep.
This approach shows potential for both loss-of-function and gain-of-function studies in the ruminant placenta.

Conclusions:

New cell lines and viral transgenesis methods are enhancing the study of placental gene function in ruminants.
These advancements facilitate a deeper understanding of placental development and physiology.
Further development of these technologies promises efficient assessment of specific gene roles in the placenta.