title: Constitutive Notch Signaling Causes Abnormal Development of the Oviducts, Abnormal Angiogenesis, and Cyst Formation in Mouse Female Reproductive Tract.
abstract: The Notch signaling pathway is critical for the differentiation of many tissues and organs in the embryo. To study the consequences of Notch1 gain-of-function signaling on female reproductive tract development, we used a cre-loxP strategy and Amhr2-cre transgene to generate mice with conditionally activated Notch1 (Rosa(Notch1)). The Amhr2-cre transgene is expressed in the mesenchyme of developing female reproductive tract and in granulosa cells in the ovary. Double transgenic Amhr2-cre, Rosa(Notch1) females were infertile, whereas control Rosa(Notch1) mice had normal fertility. All female reproductive organs in mutants showed hemorrhaging of blood vessels progressing with age. The mutant oviducts did not develop coiling, and were instead looped around the ovary. There were multiple blockages in the lumen along the oviduct length, creating a barrier for sperm or oocyte passage. Mutant females demonstrated inflamed uteri with increased vascularization and an influx of inflammatory cells. Additionally, older females developed ovarian, oviductal, and uterine cysts. The significant change in gene expression was detected in the mutant oviduct expression of Wnt4, essential for female reproductive tract development. Similar oviductal phenotypes have been detected previously in mice with activated Smo and in beta-catenin, Wnt4, Wnt7a, and Dicer conditional knockouts, indicating a common regulatory pathway disrupted by these genetic abnormalities.
authors: Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida.
authors: Lydia
authors: L
authors: Ferguson
authors: Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida.
authors: Elena M
authors: EM
authors: Kaftanovskaya
authors: Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida.
authors: Carmen
authors: C
authors: Manresa
authors: Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida.
authors: Agustin M
authors: AM
authors: Barbara
authors: Department of Pathology, Mount Sinai Medical Center, Miami Beach, Florida Department of Pathology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida.
authors: Robert J
authors: RJ
authors: Poppiti
authors: Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida Department of Gynecology, Shandong Qianfoshan Hospital, Shandong University, Jinan, China.
authors: Yingchun
authors: Y
authors: Tan
authors: Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, Texas aagoulni@fiu.edu.
authors: Alexander I
authors: AI
authors: Agoulnik
mesh_terms: D000818:Animals; D005260:Female; D005298:Fertility; D018507:Gene Expression Regulation, Developmental / Q000502:physiology*; D041722:Genes, Transgenic, Suicide; D051379:Mice; D009154:Mutation; D009389:Neovascularization, Pathologic / Q000378:metabolism*; D010048:Ovarian Cysts / Q000378:metabolism*; D010057:Oviducts / Q000002:abnormalities* / Q000254:growth & development; D051881:Receptor, Notch1 / Q000235:genetics / Q000378:metabolism*; D015398:Signal Transduction; D015854:Up-Regulation; D014599:Uterus / Q000098:blood supply / Q000473:pathology; D020246:Venous Thrombosis
chemical_list: C497762:Notch1 protein, mouse; D051881:Receptor, Notch1
keywords: Notch1; angiogenesis; female reproductive tract; infertility; oviduct