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ovarian suppression

S J A M Santegoets, A F de Groot, E M Dijkgraaf, A M Carnaz Simões, V E van der Noord, J J van Ham, M J P Welters, J R Kroep, S H van der Burg
Epithelial ovarian cancer (EOC) may cause abnormal blood levels of leukocytes. This paraneoplastic manifestation is associated with a worse response to therapy and shorter survival. To understand the complexity and nature of these leukocytes, we dissected the different populations of myeloid cells and analyzed their relation to clinical outcome. Therefore, baseline blood samples of 36 EOC patients treated either with carboplatin/doxorubucin or with gemcitabine were analyzed for different subsets of monocytes/macrophages, myeloid derived suppressor cells (MDSC) and dendritic cells (DC) using multiparameter flow cytometry as well as functional assays for myeloid cell mediated suppression of antigen-specific T cell reactivity...
2018: Oncoimmunology
Yoshihiro Koya, Wenting Liu, Yoshihiko Yamakita, Takeshi Senga, Kiyosumi Shibata, Mamoru Yamashita, Akihiro Nawa, Fumitaka Kikkawa, Hiroaki Kajiyama
Hematopoietic lineage cell-specific protein 1 (HS1), which is the hematopoietic homolog of cortactin, is an actin-binding protein and Lyn substrate. It is upregulated in several cancers and its expression level is associated with increased cell migration, metastasis, and poor prognosis. Here we investigated the expression and roles of HS1 in ovarian carcinoma cells. We analyzed the expression of HS1 in 171 ovarian cancer specimens and determined the association between HS1 expression and clinicopathological characteristics, including patient outcomes...
August 24, 2018: Oncotarget
Lea M Starita, Muhtadi M Islam, Tapahsama Banerjee, Aleksandra I Adamovich, Justin Gullingsrud, Stanley Fields, Jay Shendure, Jeffrey D Parvin
Loss-of-function pathogenic variants in BRCA1 confer a predisposition to breast and ovarian cancer. Genetic testing for sequence changes in BRCA1 frequently reveals a missense variant for which the impact on cancer risk and on the molecular function of BRCA1 is unknown. Functional BRCA1 is required for the homology-directed repair (HDR) of double-strand DNA breaks, a critical activity for maintaining genome integrity and tumor suppression. Here, we describe a multiplex HDR reporter assay for concurrently measuring the effects of hundreds of variants of BRCA1 for their role in DNA repair...
August 24, 2018: American Journal of Human Genetics
Katsutoshi Oda, Junzo Hamanishi, Koji Matsuo, Kosei Hasegawa
Ovarian clear cell carcinoma (OCCC) is distinctive from other histological types of epithelial ovarian cancer, with genetic/epigenetic alterations, a specific immune-related molecular profile, and epidemiologic associations with ethnicity and endometriosis. These findings allow for the exploration of unique and specific treatments for OCCC. Two major mutated genes in OCCC are PIK3CA and ARID1A, which are frequently coexistent with each other. Other genes' alterations also contribute to activation of the PI3K (e...
September 11, 2018: Gynecologic Oncology
Xiaoxiao Liu, Baofeng Yao, Zhiming Wu
The aberrant expression of microRNA (miRNA)-199a-5p has been frequently reported in a number of cancer types, but to the best of our knowledge, this has not been reported in ovarian cancer (OC). The role and the molecular mechanism of miR-199a-5p in OC have not been reported. Therefore, the present study investigated the effects of miR-199a-5p overexpression on the proliferation and invasion of OC cells. The level of miR-199a-5p in OC cell lines was determined by reverse transcription-quantitative polymerase chain reaction...
October 2018: Oncology Letters
Manouchehr Iranparvar Alamdari, Afshin Habibzadeh, Hossein Pakrouy, Parastoo Chaichi, Sharareh Sheidaei
INTRODUCTION: Struma ovarii is an ovarian tumor with thyroid tissue as its predominant component. It usually occurs in older women and presents with abdominal mass, pain and abnormal bleeding. Most patients are euthyroid, but some reports have noted thyrotoxicosis originating from the malignant struma ovarii. PRESENTATION OF CASE: A 10 year-old girl presented with tachycardia, normal thyroid exam and thyrotoxicosis. Thyroid scan showed no uptake with increased uptake in right ovary indicative of struma ovarii...
September 5, 2018: International Journal of Surgery Case Reports
Benjawan Wudtiwai, Pornsiri Pitchakarn, Ratana Banjerdpongchai
Anoikis-resistance is a critical step in cancer progression, especially during the process of metastasis. During this phase, the cancer phenotype that causes cell survival in detachment conditions, drug resistance, and epithelial-to-mesenchymal transition (EMT) is altered. Inhibition of anoikis-resistance can potentially be the molecular target in cancer therapy. Alpha-mangostin, an active compound in Garcinia mangostana, has been reported for its cell-death induction and its chemosensitizing and anti-metastatic properties in many cancer cell types, such as ovarian cancer, lung cancer, and hepatocellular carcinoma...
September 6, 2018: Toxicology in Vitro: An International Journal Published in Association with BIBRA
Yan Liu, Chen-Chen Ren, Li Yang, Yi-Ming Xu, Yan-Nan Chen
Ovarian cancer (OC) is a lethal gynecologic tumor, which brings its mortality to the head. CXCL12 and its receptor chemokine receptor 4 ( CXCR4) have been found to be highly expressed in OC and contribute to the disease progression by affecting tumor cell proliferation and invasion. Here, in this study, we aim to explore whether the blockade of CXCL12-CXCR4 axis with AMD3100 (a selective CXCR4 antagonist) has effects on the progression of OC. On the basis of the gene expression omnibus database of OC gene expression chips, the OC differentially expressed genes were screened by microarray analysis...
September 7, 2018: Journal of Cellular Physiology
Angka Mahardini, Chihiro Yamauchi, Yuki Takeuchi, Dinda Rizky, Hiroki Takekata, Akihiro Takemura
Food availability can become a factor driving the reproductive activity of tropical fish, particularly when primary production within their habitats fluctuates with tropical monsoons. The present study examined the involvement of insulin-like growth factors (IGF) in controlling the reproduction of the sapphire devil Chrysiptera cyanea, a reef-associated damselfish that is capable of manipulating its reproductive activity based on food availability. We cloned and characterized the cDNAs of igf1 and igf2 and determined their transcript levels in relation to seasonal and food-manipulated reproduction...
September 3, 2018: General and Comparative Endocrinology
Bianhua Shi, Jiayu Bao, Yongbin Liu, Juan Shi
The expression of death receptor 6 (DR6) is abnormal in some cancer types, but the function and underlying molecular mechanisms of DR6 in tumor progression are not yet clear. In the present study, our analysis of ovarian cancer RNA sequencing data from The Cancer Genome Atlas revealed that DR6 is upregulated in human ovarian cancer. We confirmed that the expression level of DR6 is upregulated in ovarian cancer tissues when compared with matched adjacent normal tissues. In addition, DR6 enhanced ovarian carcinoma cell migration ability, and decreased expression of DR6 inhibited the expression of matrix metalloprotease (MMP) 2 and MMP9, and increased the expression of E-cadherin...
September 2018: FEBS Open Bio
Miaomiao Qu, Yongning Zhu, Meng Jin
The aim of the present study was to investigate the expression and biological functions of microRNA (miR)-138 in ovarian cancer at the tissue and cellular levels, as well as its underlying mechanisms. A total of 47 patients with ovarian cancer were included in the present study. Ovarian cancer tissues were subjected to staging classification according to the FIGO 2000 criteria. Lymphatic metastasis was also examined. Ovarian cancer A2780 cells were transfected using liposomes. Reverse transcription-quantitative polymerase chain reaction was used to measure the expression of miR-138...
September 2018: Experimental and Therapeutic Medicine
Laurence Booth, Jane L Roberts, Rumeesa Rais, Richard E Cutler, Irmina Diala, Alshad S Lalani, Andrew Poklepovic, Paul Dent
Cancers expressing mutant RAS are associated with a weaker response to chemotherapy and a shorter overall patient survival. We have demonstrated that the irreversible inhibitor of ERBB1/2/4, neratinib, inhibits ERBB1/2/4 and causes their internalization and autolysosomal degradation. Fellow-traveler membrane proteins with RTKs, including mutant K-/N-RAS, were also degraded. We discovered that the CDK4/6 inhibitor palbociclib increased autophagosome and then autolysosome levels in a time dependent fashion, did not reduce mTOR activity, and interacted with temsirolimus to kill...
September 5, 2018: Cancer Biology & Therapy
Ai Liu, Dianxia Fan, Yanping Wang
Ovarian cancer (OC) is a common malignant tumor with a high probability of metastasis. Thus, it is urgently necessary to develop new drugs that inhibit tumor metastasis. Bromodomain and extraterminal (BET) inhibitors targeting bromodomain-containing proteins are currently recognized as novel anticancer agents. Herein, we explored the effects of i-BET151, a BET bromodomain inhibitor, on OC metastasis and on antitumor immunity. Our experiments showed that i-BET151 decreased the viability and induced apoptosis, senescence, and cell cycle arrest of cancer cells...
September 4, 2018: Cell and Tissue Research
Ying Xie, Eun-Sil Park, Dongxi Xiang, Zhe Li
A recent paradigm shift in ovarian cancer research is the finding that many ovarian cancers may originate from fallopian tube epithelial (FTE) cells. As tissue stem and progenitor cells often serve as cells of origin of cancer, a better understanding of FTE stem/progenitor cells and how they become transformed is essential for early detection and prevention of ovarian cancer. To facilitate study of FTE stem/progenitor cells in model systems, we established an organoid culture system for mouse FTE cells. We find that EPCAM+ mouse FTE cells can be stably cultured long-term under a minimal condition of activated EGF signaling and suppressed TGFbeta signaling...
August 25, 2018: Stem Cell Research
Jing Sun, Xin Cai, Mingo Mh Yung, Wei Zhou, Jing Li, Yi Zhang, Zhuqing Li, Stephanie S Liu, Annie N Y Cheung, Hextan Y S Ngan, Yiliang Li, Zhijun Dai, Yan Kai, Alexandros Tzatsos, Weiqun Peng, David W Chan, Wenge Zhu
Platinum drugs are used in first-line to treat ovarian cancer, but most of the patients eventually generate resistance after treatment with these drugs. Although both c-Myc and EZH2 have been implicated in regulating cisplatin resistance in ovarian cancer, the interplay between these two regulators is poorly understood. Using RNA sequence analysis (RNA-seq), for the first time we find that miR-137 level is extremely low in cisplatin resistant ovarian cancer cells, correlating with higher levels of c-Myc and EZH2 expression...
August 30, 2018: Oncogene
Donghyeok Kim, Bo-Hyun Choi, In-Geun Ryoo, Mi-Kyoung Kwak
Aldehyde dehydrogenase 1A1 (ALDH1A1) is one of cancer stem cell (CSC) markers, and high ALDH1 expression has been related to drug resistance and facilitated tumor growth. In this study, we investigated the potential involvement of nuclear factor erythroid 2-like 2 (NFE2L2/NRF2) in CSC-like properties of ALDH-high ovarian CSCs. Our experimental system, ALDH1A1-high (ALDH-H) subpopulation, was isolated and stabilized using doxorubicin-resistant ovarian cancer A2780 cells. ALDH-H exerted CSC-like properties such as drug resistance, colony/sphere formation, and enhanced tumor growth along with high levels of CSCs markers compared to ALDH1A1-low (ALDH-L)...
August 30, 2018: Cell Death & Disease
Kathryn C Galang, Justin R Croft, Graham J Thompson, Anthony Percival-Smith
Queen mandibular pheromone (QMP) is a potent reproductive signal to which honey bee workers respond by suppressing their ovaries and adopting alloparental roles within the colony. This anti-ovarian effect of QMP on workers can, surprisingly, be induced in other insects, including fruit flies, in which females exposed to synthetic QMP develop smaller ovaries with fewer eggs. In this study, we use the Drosophila melanogaster model to identify the components of synthetic QMP required for the anti-ovarian effect...
August 29, 2018: Insect Molecular Biology
Reem Al Argan, Avi Saskin, Ji Wei Yang, Maria Daniela D'Agostino, Juan Rivera
Glucocorticoid resistance syndrome (GRS) is a rare genetic disorder caused by inactivating mutations of the NR3C1 gene which encodes the glucocorticoid receptor. The phenotypic spectrum is broad but typically include symptoms of adrenal insufficiency, mineralocorticoid excess and hyperandrogenism. We report a new case associated with a novel NR3C1 mutation. A 55-year-old woman with lifelong history of low body weight, hyperandrogenism and anxiety was seen at the endocrine clinic after left adrenalectomy and salpingoophorectomy for lesions suspicious of ovarian cancer and adrenal metastasis...
August 30, 2018: Endocrine Journal
Wan-Hung Lee, Lawrence M Carey, Li-Li Li, Zhili Xu, Yvonne Y Lai, Michael J Courtney, Andrea G Hohmann
Elevated N-methyl-D-aspartate receptor activity contributes to central sensitization. Our laboratories and others recently reported that disrupting protein-protein interactions downstream of N-methyl-D-aspartate receptors suppresses pain. Specifically, disrupting binding between the enzyme neuronal nitric oxide synthase and either its upstream (postsynaptic density 95 kDa, PSD95) or downstream (e.g. nitric oxide synthase 1 adaptor protein, NOS1AP) protein partners suppressed inflammatory and/or neuropathic pain...
January 2018: Molecular Pain
Hsin-Ling Yang, Ruei-Wan Lin, Peramaiyan Rajendran, Dony Chacko Mathew, Varadharajan Thigarajan, Chuan-Chen Lee, Chih-Jung Hsu, You-Cheng Hseu
Antrodia salmonea is well known in Taiwan as a traditional Chinese medicinal fungus and has demonstrated antioxidant, anti-inflammatory, and anticancer effects. However, the anticancer activity of A. salmonea against human ovarian cancer is still elusive. Therefore, we investigated the antiovarian tumor activity of a fermented culture broth of A. salmonea and exhibits its underlying molecular mechanism. A. salmonea shows a significant effect on cell viability in human ovarian carcinoma (SKOV-3 or A2780) cell lines with an 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay...
August 26, 2018: Journal of Cellular Physiology
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