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Derivation
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The ectocervical Ect1/E6E7 (ATCC CRL-2614) and endocervical End1/E6E7 (ATCC CRL-2615) cell lines were established in 1996 from normal epithelial tissue taken from a premenopausal woman undergoing hysterectomy for endometriosis.
The VK2/E6E7 (ATCC CRL-2616 cell line was established in 1996 from the normal vaginal mucosal tissue taken from a premenopausal woman undergoing anterior-posterior vaginal repair surgery.
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Genes Expressed
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cytokeratins 8 (CK8), 10 (CK10), 13 (CK13), 18 (CK18) and 19 (CK19),macrophage colony-stimulating factor (M-CSF); transforming growth factor beta1; interleukin 8 (IL-8); prostaglandin E2; the secretory leukoproteinase inhibitor; polymeric immunoglobulin receptor,Stimulation with interferon gamma and tumor necrosis factor alpha (TNF alpha) induces or significantly up-regulates expression of several of the cytokines and chemokines as well as major histocompatibility complex (MHC) class II antigens The Cyt c-/- cell line provides a unique resource of mammalian cells lacking cytochrome c.
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Comments
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The endocervical cell line expresses characteristics of simple columnar epithelium, whereas the ectocervical and vaginal cell lines express characteristics of stratified squamous nonkeratinizing epithelia.
Without stimulation, all three cell lines produce macrophage colony-stimulating factor (M-CSF), transforming growth factor beta1, interleukin 8 (IL-8), prostaglandin E2, the secretory leukoproteinase inhibitor, and the polymeric immunoglobulin receptor.
The endocervical cell line (End1/E6E7), but not the others, also produce the lymphopoietic cytokines IL-6, IL-7, and consistently detectable levels of the chemokine known as "regulated-upon-activation, normal T cell expressed and secreted" (RANTES).
Stimulation with interferon gamma and tumor necrosis factor alpha (TNF alpha) induces or significantly up-regulates expression of several of the cytokines and chemokines as well as major histocompatibility complex (MHC) class II antigens in the lines.
Piliated, but not nonpiliated, Neisseria gonorrhoea strain F62 variants actively invade these epithelial cell lines. Invasion of these cells by green fluorescent protein-expressing gonococci is characterized by colocalization of gonococci with F actin.
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