Antineoplastic Agents/pharmacology; Fenofibrate/pharmacology; PPAR alpha/agonists; Tretinoin/pharmacology; Animals; Antineoplastic Agents/therapeutic use; Apoptosis/drug effects; Cell Line, Tumor; Cell Proliferation/drug effects; Cyclin D1/genetics; Cyclin D1/metabolism; Dose-Response Relationship, Drug; Endometrial Neoplasms/drug therapy; Endometrial Neoplasms/metabolism; Endometrial Neoplasms/pathology; Female; Fenofibrate/therapeutic use; Gene Expression Profiling/methods; Gene Expression Regulation/drug effects; Humans; Methionine Adenosyltransferase/genetics; Methionine Adenosyltransferase/metabolism; Mice; Mice, Nude; Neoplasm Transplantation; Oligonucleotide Array Sequence Analysis; PPAR alpha/genetics; PPAR alpha/metabolism; RNA Interference; RNA, Messenger/metabolism; Tretinoin/therapeutic use