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ovarian growth factors

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https://www.readbyqxmd.com/read/29331665/blocking-lpa-dependent-signaling-increases-ovarian-cancer-cell-death-in-response-to-chemotherapy
#1
LeAnn C Rogers, Ryan R Davis, Naveen Said, Thomas Hollis, Larry W Daniel
The paradoxical role of reactive oxygen species in cell death versus cell survival establishes a delicate balance between chemotherapy efficacy and management of detrimental side effects. Normal proliferative signaling requires that cells remain inside a redox range that allows reversible protein oxidation to occur. Shifting the redox environment toward highly reducing or oxidizing states leads to cellular stress and cell death. Reactive oxygen species produced in response to Taxol and cisplatin treatment are necessary for effective cancer cell killing but the same ROS leads to damaging side effects in normal tissues...
January 4, 2018: Redox Biology
https://www.readbyqxmd.com/read/29331323/regulation-of-inflammatory-factors-by-double-stranded-rna-receptors-in-breast-cancer-cells
#2
Amritha Venkatesh, Harika Nandigam, Maria Muccioli, Manindra Singh, Tiffany Loftus, Deana Lewis, Michelle Pate, Fabian Benencia
Malignant cells are not the only components of a tumor mass since other cells (e.g., fibroblasts, infiltrating leukocytes and endothelial cells) are also part of it. In combination with the extracellular matrix, all these cells constitute the tumor microenvironment. In the last decade the role of the tumor microenvironment in cancer progression has gained increased attention and prompted efforts directed to abrogate its deleterious effects on anti-cancer therapies. The immune system can detect and attack tumor cells, and tumor-infiltrating lymphocytes (particularly CD8 T cells) have been associated with improved survival or better response to therapies in colorectal, melanoma, breast, prostate and ovarian cancer patients among others...
November 22, 2017: Immunobiology
https://www.readbyqxmd.com/read/29325268/-clinical-significance-of-targeting-drug-based-molecular-biomarkers-expression-in-ovarian-clear-cell-carcinoma
#3
M J Li, H R Li, X Cheng, R Bi, X Y Tu, F Liu, L H Chen
Objective: To assess the expression level of targeting drug-based molecular biomarkers in ovarian clear cell carcinoma (OCCC) tissues and its clinical significance. Methods: A total of 63 OCCC patients included 40 primary OCCC and 23 recurrent OCCC for secondary cytoreductive surgery (SCS), who had received primary surgeries at Fudan University Shanghai Cancer Center between January, 2008 and December, 2015 were enrolled, and immunohistochemistry SP method was used to test human epidermal growth factor receptor (EGFR), human epidermal growth factor receptor-2 (HER2), aurora kinase A (AURKA), breast cancer susceptibility gene 1 (BRCA1), BRCA2 and programmed death-ligand 1 (PD-L1)protein expression in paraffin-embedded tissues...
December 25, 2017: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/29324532/low-expression-of-protocadherin-8-promotes-the-progression-of-ovarian-cancer
#4
Yuan Cao, Yan Yu, Xiaolong Chen, Fang Ren, Ruitao Zhang, Yanyan Jia, Zhigang Ren, Ranran Sun, Juan Li, Huirong Shi
OBJECTIVE: Ovarian cancer (OC) is the second most lethal gynecological cancer among women throughout the world. Protocadherin-8 (PCDH8) could function as a candidate tumor suppressor. However, the link between PCDH8 and OC development is poorly understood. MATERIALS AND METHODS: A total of 68 OC patients were retrospectively enrolled. Clinical information was collected and cancer tissues were used for tissue microarray. The PCDH8 expression was determined on tissue microarray by immunohistochemical staining, and PCDH8 protein was detected in cancer tissues and adjacent tissue by western blotting...
January 10, 2018: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/29321816/erbb-signaling-in-ctcs-of-ovarian-cancer-and-glioblastoma
#5
REVIEW
Anjali Geethadevi, Deepak Parashar, Erin Bishop, Sunila Pradeep, Pradeep Chaluvally-Raghavan
Circulating Tumor Cells (CTCs) are floating cell populations, which are resistant to anoikis after detachment from the primary sites and travel through the circulatory and lymphatic systems to disseminate throughout the body. CTCs are considered as seed cells for metastasis, and thus isolation of CTCs does not require any invasive procedure. Based on the nature and location of ovarian cancer and glioblastoma, the role of CTCs and hematogenous (carried by blood) spreading of tumor cells in these cancers were not understood well...
November 2017: Genes & Cancer
https://www.readbyqxmd.com/read/29321035/dhea-induced-ovarian-hyperfibrosis-is-mediated-by-tgf-%C3%AE-signaling-pathway
#6
Daojuan Wang, Wenqing Wang, Qiao Liang, Xuan He, Yanjie Xia, Shanmei Shen, Hongwei Wang, Qian Gao, Yong Wang
BACKGROUND: The polycystic ovary syndrome (PCOS) is a common metabolic and endocrine disorder with pathological mechanisms remain unclear. The following study investigates the ovarian hyperfibrosis forming via transforming growth factor-β (TGF-β) signaling pathway in Dehydroepiandrosterone (DHEA)- induced polycystic ovary syndrome (PCOS) rat model. We furthermore explored whether TGF-βRI inhibitor (SB431542) decreases ovarian fibrosis by counterbalancing the expression of fibrotic biomarkers...
January 10, 2018: Journal of Ovarian Research
https://www.readbyqxmd.com/read/29318553/analyzing-the-type-ii-transmembrane-serine-protease-hepsin-dependent-basement-membrane-remodeling-in-3d-cell-culture
#7
Shishir M Pant, Denis Belitskin, Hanna Ala-Hongisto, Juha Klefström, Topi A Tervonen
Breakdown of the basement membrane is a key step that precedes tumor invasion, and accumulating evidence suggests a key role for the type II transmembrane proteases (TTSPs) in that process. Overexpression of a TTSP hepsin characterizes many solid cancers, including prostate, breast, and ovarian cancer, and in experimental tumor models, the elevated proteolytic activity of hepsin simultaneously activates several growth factors and cleaves basement membrane protein laminin-332, which is an essential component of the cell-basement membrane junction hemidesmosome...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29317212/folliculogenic-factors-in-photoregressed-ovaries-differences-in-mrna-expression-in-early-compared-to-late-follicle-development
#8
Alexander K Salomon, Kathleen Leon, Melissa M Campbell, Kelly A Young
The early stages of ovarian folliculogenesis generally progress independent of gonadotropins, whereas later stages require signaling initiated by FSH. In Siberian hamsters, cycles of folliculogenesis are mediated by changes in photoperiod which depress the hypothalamic pituitary gonadal axis. Reduced gonadotropins lead to decreases in mature follicle development and ovulation; however, early stages of folliculogenesis have not been explored in regressed ovaries. We hypothesized that intraovarian factors that contribute predominantly to later stages of folliculogenesis would react to changes in photoperiod, whereas factors contributing to earlier stages would not change...
January 6, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29316020/vitrification-and-in-vitro-culture-had-no-adverse-effect-on-the-follicular-development-and-gene-expression-of-stimulated-human-ovarian-tissue
#9
Mahdi Ramezani, Mojdeh Salehnia, Mina Jafarabadi
AIM: The study assesses the effect of the vitrification procedure on the integrity, morphology, follicular development and gene expression of stimulated human ovarian tissue after warming and two weeks of in vitro culture. METHODS: Ovarian specimens were divided into non-vitrified and vitrified groups and were cultured for two weeks. Morphological analysis and immunohistochemistry were performed. The 17-β estradiol and anti-Müllerian hormone levels in collected media were assessed...
January 5, 2018: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29312534/the-pax8-cistrome-in-epithelial-ovarian-cancer
#10
Emily K Adler, Rosario I Corona, Janet M Lee, Norma Rodriguez-Malave, Paulette Mhawech-Fauceglia, Heidi Sowter, Dennis J Hazelett, Kate Lawrenson, Simon A Gayther
PAX8 is a lineage-restricted transcription factor that is expressed in epithelial ovarian cancer (EOC) precursor tissues, and in the major EOC histotypes. Frequent overexpression of PAX8 in primary EOCs suggests this factor functions as an oncogene during tumorigenesis, however, the biological role of PAX8 in EOC development is poorly understood. We found that stable knockdown of PAX8 in EOC models significantly reduced cell proliferation and anchorage dependent growth in vitro, and attenuated tumorigenicity in vivo...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29304854/suitability-assessment-of-baseline-concentration-of-mmp3-timp3-he4-and-ca125-in-the-serum-of-patients-with-ovarian-cancer
#11
Aneta Cymbaluk-Płoska, Anita Chudecka-Głaz, Ewa Pius-Sadowska, Bogusław Machaliński, Janusz Menkiszak, Agnieszka Sompolska-Rzechuła
BACKGROUND: MMP and TIMP play an important role in the degradation of extracellular matrix components which are essential for tumor growth, invasion and metastasis. Aim of this research was to assess MMP3 and TIMP3 as prognostic factors among patients with ovarian cancer. RESULTS: It was found that high levels of output MMP3 correlated with shortened overall survival time of patients by 9.7 months. In addition, it has been shown that high concentrations of output MMP3 were significantly associated with a shorter disease free time in median concentrations implemented p = 0...
January 5, 2018: Journal of Ovarian Research
https://www.readbyqxmd.com/read/29304224/in-vitro-differentiation-of-human-oocyte-like-cells-from-oogonial-stem-cells-single-cell-isolation-and-molecular-characterization
#12
Erica Silvestris, Paola Cafforio, Stella D'Oronzo, Claudia Felici, Franco Silvestris, Giuseppe Loverro
STUDY QUESTION: Are the large cells derived from cultured DEAD box polypeptide 4 (DDX4)-positive oogonial stem cells (OSCs), isolated from the ovarian cortex of non-menopausal and menopausal women, oocyte-like cells? SUMMARY ANSWER: Under appropriate culture conditions, DDX4-positive OSCs from non-menopausal and menopausal women differentiate into large haploid oocyte-like cells expressing the major oocyte markers growth differentiation factor 9 (GDF-9) and synaptonemal complex protein 3 (SYCP3) and then enter meiosis...
January 3, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29298131/a-systematic-review-of-p53-regulation-of-oxidative-stress-in-skeletal-muscle
#13
Kaitlyn Beyfuss, David A Hood
BACKGROUND: p53 is a tumor suppressor protein involved in regulating a wide array of signaling pathways. The role of p53 in the cell is determined by the type of imposed oxidative stress, its intensity and duration. The last decade of research has unravelled a dual nature in the function of p53 in mediating the oxidative stress burden. However, this is dependent on the specific properties of the applied stress and thus requires further analysis. METHODS: A systematic review was performed following an electronic search of Pubmed, Google Scholar, and ScienceDirect databases...
January 3, 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29291022/nfe2l2-nrf2-silencing-inducible-mir-206-targets-c-met-egfr-and-suppresses-bcrp-abcg2-in-cancer-cells
#14
Bo-Hyun Choi, Da Young Ryu, In-Geun Ryoo, Mi-Kyoung Kwak
The nuclear factor (erythroid-derived 2)-like 2 (NFE2L2/NRF2) plays a critical role in the expression of multiple antioxidant and detoxifying enzymes. Herein, we provide evidence of the molecular links between NRF2 and oncogenic signaling hepatocyte growth factor receptor (HGFR/c-MET) and epidermal growth factor receptor (EGFR). Interfering RNA-induced stable inhibition of NRF2 in ovarian carcinoma SKOV3 and renal carcinoma A498 reduced the levels of c-MET and EGFR. MicroRNA-206 (miR-206) that was increased in both NRF2-silenced cells was predicted as a dual regulator of c-MET and EGFR...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29290818/methylation-associated-silencing-of-mir-193a-3p-promotes-ovarian-cancer-aggressiveness-by-targeting-grb7-and-mapk-erk-pathways
#15
Kangmei Chen, Michelle Xin Liu, Celia Sze-Ling Mak, Mingo Ming-Ho Yung, Thomas Ho-Yin Leung, Dakang Xu, Siew-Fei Ngu, Karen Kar-Loen Chan, Huijuan Yang, Hextan Yuen-Sheung Ngan, David Wai Chan
Human growth factor receptor-bound protein-7 (GRB7) is a pivotal mediator involved in receptor tyrosine kinase signaling and governing diverse cellular processes. Aberrant upregulation of GRB7 is frequently associated with the progression of human cancers. However, the molecular mechanisms leading to the upregulation of GRB7 remain largely unknown. Here, we propose that the epigenetic modification of GRB7 at the post-transcriptional level may be a crucial factor leading to GRB7 upregulation in ovarian cancers...
2018: Theranostics
https://www.readbyqxmd.com/read/29288977/maternal-nutritional-restriction-during-late-gestation-impairs-development-of-the-reproductive-organs-in-both-male-and-female-lambs
#16
F Hoffman, E Boretto, S Vitale, V Gonzalez, G Vidal, M F Pardo, M F Flores, F Garcia, G Bagnis, O C M Queiroz, M B Rabaglino
Maternal nutritional restrictions during late gestation could lead to fetal hypoglycemia. Glucose levels in the fetal sheep regulate circulating insulin-like growth factor 1 (IGF1) levels, which stimulate cell proliferation and differentiation of reproductive organs after binding to its own receptor or estrogen receptors. The objective of this study was to determine the effects of subnutrition of ewes during the last trimester of gestation on the serum glucose/IGF1 levels and development of reproductive organs in their lambs...
December 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/29286463/in-vitro-growth-of-mouse-preantral-follicles-under-simulated-microgravity
#17
Shen Zhang, Yonggen Wu, Yimin Weng, Zhihui Xu, Wenmin Chen, Dahan Zheng, Wei Lin, Jun Liu, Ying Zhou
14 day-old mouse ovarian tissue and preantral follicles isolated from same-aged mice were incubated in a simulated microgravity culture system. We quantitatively assessed follicle survival, measured follicle and oocyte diameters, and examined ultrastructure of the oocytes produced from the system. We observed decreased follicle survival, downregulation of expressions of proliferating cell nuclear antigen and growth differentiation factor 9, as indicators for the development of granulosa cells and oocytes, respectively, and oocyte ultrastructural abnormalities under the simulated microgravity condition...
December 17, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29286149/inhibition-effect-of-triptolide-on-human-epithelial-ovarian-cancer-via-adjusting-cellular-immunity-and-angiogenesis
#18
Hui Hu, Genhua Huang, Haibin Wang, Xiaoli Li, Xiaobing Wang, Ying Feng, Buzhen Tan, Tingtao Chen
Chemotherapy resistance of advanced ovarian cancers is responsible for death of most cancer patients, so it is necessary to seek safe and effective natural ingredients to lower the chemotherapy resistance of ovarian cancer. In the present study, we studied the anticancer effects of triptolide (TPL) and TPL + cisplatin (DDP) in vitro and in vivo using SKOV3/DDP cell line and a mouse model. In vitro results showed that TPL and TPL + DDP inhibited cellular invasion and migration of SKOV3/DDP cells (P<0...
December 15, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29286125/goserelin-promotes-the-apoptosis-of-epithelial-ovarian-cancer-cells-by-upregulating-forkhead-box%C3%A2-o1-through-the-pi3k-akt-signaling-pathway
#19
Ning Zhang, Junjun Qiu, Tingting Zheng, Xiaodan Zhang, Keqin Hua, Ying Zhang
Gonadotropins, including luteinizing hormone (LH) and follicle stimulating hormone (FSH), are conducive to the growth of ovarian cancer based on the 'gonadotropin theory' and are regulated by gonadotropin-releasing hormone (GnRH). The present study was carried out to investigate the effect of goserelin, a GnRH agonist, on the apoptosis of epithelial ovarian cancer (EOC) cells and the underlying in vitro and in vivo mechanisms. Through flow cytometry, Hoechst staining and TUNEL staining, we demonstrated that goserelin promoted the apoptosis of EOC cells both in vitro and in vivo...
December 15, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29278228/an-in-vitro-study-on-oocyte-and-follicles-of-transplanted-ovaries-treated-with-vascular-endothelial-growth-factor
#20
Maryam Zand-Vakili, Afsaneh Golkar-Narenji, Paul E Mozdziak, Hussein Eimani
OBJECTIVE: Retrieval of high quality follicles and oocytes from transplanted ovaries is essential for higher fertility preservation efficiency. The effect of vascular endothelial growth factor (VEGF) was evaluated on the survival rate of preantral follicles following ovarian transplantation. MATERIAL AND METHODS: Prepubertal female mice were divided to 6 groups including: control (C), transplanted with no VEGF treatment (T) and transplanted with different dosages of VEGF [0...
December 15, 2017: Journal of the Turkish German Gynecological Association
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