title: Cervical carcinoma cells stimulate the angiogenesis through TSLP promoting growth and activation of vascular endothelial cells.
abstract: OBJECTIVE
  To explore whether cervical carcinomas cells-derived thymic stromal lymphopoietin (TSLP) modulates the biologic behavior of vascular endothelial cells and herein participates in the angiogenesis in the cervical cancer pathogenesis.
  
  
  METHODS
  We analyzed expression of TSLP and its receptor (TSLPR) in cervical cancer cells by immunohistochemistry, ELISA, and flow cytometry, respectively. We further investigated the effects of TSLP on the proliferation, apoptosis, activation, and angiogenesis in vitro of human umbilical vein endothelial cells (HUVECs).
  
  
  RESULTS
  It has been found that the cervical cancer cells translate TSLP and endothelial cells express TSLPR in cervical cancer tissues. Both HeLa and CaSki cells secret TSLP in a time-dependent manner, and the ratio of TSLPR-positive HUVECs is about 30%. It has been showed that recombinant human TSLP (rhTSLP) can significantly increase Ki67 and CD62E expression in HUVECs and interleukin-6 (IL-6) levels from HeLa and CaSki cells; on the contrary, anti-human TSLP or TSLPR neutralizing antibody down-regulates the expression of Ki67, angiogenesis-relative molecules CD62E, and CD105 in HUVECs cocultured with HeLa or CasKi cells and inhibits IL-6 secretion from HeLa and CaSki cells. Moreover, both rhTSLP and endogenous TSLP from HeLa or CaSki cells obviously stimulate the proliferation, activation, and angiogenesis, but not influence the apoptosis of HUVECs in vitro.
  
  
  CONCLUSIONS
  This study has demonstrated that TSLP secreted by cervical carcinomas cells is involved in the angiogenesis of cervical cancer in a paracrine manner.
authors.affiliation: Laboratory for Reproductive Immunology, Hospital & Institute of Obstetrics and Gynecology, IBS, Fudan University Shanghai Medical College, Shanghai, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Xie
authors.forename: Yu-Han
authors.initials: YH
authors.lastname: Meng
authors.forename: Li-Bing
authors.initials: LB
authors.lastname: Liu
authors.forename: Kai-Kai
authors.initials: KK
authors.lastname: Chang
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Ming-Qing
authors.initials: MQ
authors.lastname: Li
authors.forename: Da-Jin
authors.initials: DJ
authors.lastname: Li
mesh_terms: D000328:Adult; D017209:Apoptosis / Q000187:drug effects; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D018920:Coculture Techniques; D016207:Cytokines / Q000494:pharmacology*; D042783:Endothelial Cells / Q000378:metabolism*; D005260:Female; D061307:Human Umbilical Vein Endothelial Cells; D006801:Humans; D015850:Interleukin-6 / Q000378:metabolism; D008875:Middle Aged; D009389:Neovascularization, Pathologic / Q000378:metabolism; D018121:Receptors, Cytokine / Q000378:metabolism*; D002583:Uterine Cervical Neoplasms / Q000378:metabolism* / Q000473:pathology; D000094632:Thymic Stromal Lymphopoietin
chemical_list: C498762:CRLF2 protein, human; D016207:Cytokines; D015850:Interleukin-6; D018121:Receptors, Cytokine; D000094632:Thymic Stromal Lymphopoietin