OBJECTIVE: To investigate the expression of MGST1 in primary tumors, solid metastases and metastatic effusions in advanced-stage serous ovarian carcinoma (OC) and analyze the association with clinicopathologic parameters, including chemotherapy resistance and survival. METHODS: MGST1 mRNA expression was investigated in 178 tumors (88 effusions, 38 primary carcinomas, 52 solid metastases) from 144 patients using real-time quantitative PCR (qRT-PCR). Forty-two of the 88 effusions were additionally analyzed for MGST1 protein expression by Western blotting. RESULTS: mRNA expression of MGST1 was higher in primary carcinomas and solid metastases compared to effusions (p=0.008 and p=0.012, respectively). In patient-matched samples, mRNA expression of MGST1 was higher in solid metastases compared to effusions (p=0.023), and a trend for higher MGST1 levels in solid metastases compared to primary tumors was observed (p=0.06). Biopsies from primary carcinomas obtained from patients with >200 ml ascites at diagnosis had higher mRNA expression of MGST1 compared to samples from patients with <200 ml ascites (p=0.037). MGST1 mRNA expression was not associated with age, histological grade, tumor stage, residual disease volume, response to chemotherapy, chemotherapy resistance or survival. Western blot analysis of patient-matched effusions showed high concordance between MGST1 protein and mRNA levels measured by qRT-PCR (p<0.001). CONCLUSIONS: The present study documents frequent MGST1 mRNA and protein expression in OC. The data suggest increased activity of oxidative response pathways, reflected by higher mRNA expression, in solid OC tumors compared to metastatic effusions. Additionally, a tumor microenvironment consisting of ascites may induce antioxidant activity.
OBJECTIVE: To investigate the expression of MGST1 in primary tumors, solid metastases and metastatic effusions in advanced-stage serous ovarian carcinoma (OC) and analyze the association with clinicopathologic parameters, including chemotherapy resistance and survival. METHODS:MGST1 mRNA expression was investigated in 178 tumors (88 effusions, 38 primary carcinomas, 52 solid metastases) from 144 patients using real-time quantitative PCR (qRT-PCR). Forty-two of the 88 effusions were additionally analyzed for MGST1 protein expression by Western blotting. RESULTS: mRNA expression of MGST1 was higher in primary carcinomas and solid metastases compared to effusions (p=0.008 and p=0.012, respectively). In patient-matched samples, mRNA expression of MGST1 was higher in solid metastases compared to effusions (p=0.023), and a trend for higher MGST1 levels in solid metastases compared to primary tumors was observed (p=0.06). Biopsies from primary carcinomas obtained from patients with >200 ml ascites at diagnosis had higher mRNA expression of MGST1 compared to samples from patients with <200 ml ascites (p=0.037). MGST1 mRNA expression was not associated with age, histological grade, tumor stage, residual disease volume, response to chemotherapy, chemotherapy resistance or survival. Western blot analysis of patient-matched effusions showed high concordance between MGST1 protein and mRNA levels measured by qRT-PCR (p<0.001). CONCLUSIONS: The present study documents frequent MGST1 mRNA and protein expression in OC. The data suggest increased activity of oxidative response pathways, reflected by higher mRNA expression, in solid OC tumors compared to metastatic effusions. Additionally, a tumor microenvironment consisting of ascites may induce antioxidant activity.
Authors: Ben Davidson; Dag Andre Nymoen; Bente Vilming Elgaaen; Anne Cathrine Staff; Claes G Tropé; Janne Kærn; Reuven Reich; Thea E Hetland Falkenthal Journal: Virchows Arch Date: 2014-04-23 Impact factor: 4.064
Authors: Dag Andre Nymoen; Arild Holth; Thea E Hetland Falkenthal; Claes G Tropé; Ben Davidson Journal: Mol Cancer Date: 2015-02-18 Impact factor: 27.401
Authors: Ganna Chornokur; Hui-Yi Lin; Jonathan P Tyrer; Kate Lawrenson; Joe Dennis; Ernest K Amankwah; Xiaotao Qu; Ya-Yu Tsai; Heather S L Jim; Zhihua Chen; Ann Y Chen; Jennifer Permuth-Wey; Katja K H Aben; Hoda Anton-Culver; Natalia Antonenkova; Fiona Bruinsma; Elisa V Bandera; Yukie T Bean; Matthias W Beckmann; Maria Bisogna; Line Bjorge; Natalia Bogdanova; Louise A Brinton; Angela Brooks-Wilson; Clareann H Bunker; Ralf Butzow; Ian G Campbell; Karen Carty; Jenny Chang-Claude; Linda S Cook; Daniel W Cramer; Julie M Cunningham; Cezary Cybulski; Agnieszka Dansonka-Mieszkowska; Andreas du Bois; Evelyn Despierre; Ed Dicks; Jennifer A Doherty; Thilo Dörk; Matthias Dürst; Douglas F Easton; Diana M Eccles; Robert P Edwards; Arif B Ekici; Peter A Fasching; Brooke L Fridley; Yu-Tang Gao; Aleksandra Gentry-Maharaj; Graham G Giles; Rosalind Glasspool; Marc T Goodman; Jacek Gronwald; Patricia Harrington; Philipp Harter; Alexander Hein; Florian Heitz; Michelle A T Hildebrandt; Peter Hillemanns; Claus K Hogdall; Estrid Hogdall; Satoyo Hosono; Anna Jakubowska; Allan Jensen; Bu-Tian Ji; Beth Y Karlan; Linda E Kelemen; Mellissa Kellar; Lambertus A Kiemeney; Camilla Krakstad; Susanne K Kjaer; Jolanta Kupryjanczyk; Diether Lambrechts; Sandrina Lambrechts; Nhu D Le; Alice W Lee; Shashi Lele; Arto Leminen; Jenny Lester; Douglas A Levine; Dong Liang; Boon Kiong Lim; Jolanta Lissowska; Karen Lu; Jan Lubinski; Lene Lundvall; Leon F A G Massuger; Keitaro Matsuo; Valerie McGuire; John R McLaughlin; Iain McNeish; Usha Menon; Roger L Milne; Francesmary Modugno; Kirsten B Moysich; Roberta B Ness; Heli Nevanlinna; Ursula Eilber; Kunle Odunsi; Sara H Olson; Irene Orlow; Sandra Orsulic; Rachel Palmieri Weber; James Paul; Celeste L Pearce; Tanja Pejovic; Liisa M Pelttari; Malcolm C Pike; Elizabeth M Poole; Harvey A Risch; Barry Rosen; Mary Anne Rossing; Joseph H Rothstein; Anja Rudolph; Ingo B Runnebaum; Iwona K Rzepecka; Helga B Salvesen; Eva Schernhammer; Ira Schwaab; Xiao-Ou Shu; Yurii B Shvetsov; Nadeem Siddiqui; Weiva Sieh; Honglin Song; Melissa C Southey; Beata Spiewankiewicz; Lara Sucheston; Soo-Hwang Teo; Kathryn L Terry; Pamela J Thompson; Lotte Thomsen; Ingvild L Tangen; Shelley S Tworoger; Anne M van Altena; Robert A Vierkant; Ignace Vergote; Christine S Walsh; Shan Wang-Gohrke; Nicolas Wentzensen; Alice S Whittemore; Kristine G Wicklund; Lynne R Wilkens; Anna H Wu; Xifeng Wu; Yin-Ling Woo; Hannah Yang; Wei Zheng; Argyrios Ziogas; Hanis N Hasmad; Andrew Berchuck; Edwin S Iversen; Joellen M Schildkraut; Susan J Ramus; Ellen L Goode; Alvaro N A Monteiro; Simon A Gayther; Steven A Narod; Paul D P Pharoah; Thomas A Sellers; Catherine M Phelan Journal: PLoS One Date: 2015-06-19 Impact factor: 3.240