Hormonal Responsiveness of Integrated MMTV DNA
Endogenous MMTV reacts to the whole range of hormones that regulate normal mammary development and lactation, response has been demonstrated to steroid hormones (androgens, glucocorticoids and progestins), as well as prolactin. When the mouse reaches puberty the virus begins to express its messenger RNA in the estrogen sensitive tissues. As a result, after puberty all mammary cells will contain the active retrovirus and begin to replicate in the genome and express viral messenger RNA is all new mammary tissue cells.
Read more about this topic: Mouse Mammary Tumor Virus
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