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https://www.readbyqxmd.com/read/29693704/lncsox4-serves-an-oncogenic-role-in-the-tumorigenesis-of-epithelial-ovarian-cancer-by-promoting-cell-proliferation-and-inhibiting-apoptosis
#1
Yulan Liu, Yan Wang, Dongmei Yao, Diansheng Cui
Epithelial ovarian cancer is one of the primary causes of gynecological cancer mortality. Increasing evidence has suggested that long non‑coding RNAs (lncRNAs) may serve a pivotal role in cancer development. To determine whether Lnc SRY‑box 4 (SOX4), an lncRNA, promotes the self‑renewal of liver tumor cells and contributes to the development of epithelial ovarian cancer, the present study investigated the expression of LncSOX4 in clinical epithelial ovarian cancer tissues and non‑cancer controls by reverse transcription‑quantitative polymerase chain reaction analysis...
April 18, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29693189/gallic-acid-sensitizes-paclitaxel-resistant-human-ovarian-carcinoma-cells-through-an-increase-in-reactive-oxygen-species-and-subsequent-downregulation-of-erk-activation
#2
Jessica Nayelli Sánchez-Carranza, J Fernando Díaz, Mariano Redondo-Horcajo, Isabel Barasoain, Laura Alvarez, Pedro Lastres, Antonio Romero-Estrada, Patricio Aller, Leticia González-Maya
Paclitaxel (PTX) is currently used as a front-line chemotherapeutic agent for several types of cancer, including ovarian carcinoma; however, PTX-resistance frequently arises through multiple mechanisms. The development of new strategies using natural compounds and PTX in combination has been the aim of several prior studies, in order to enhance the efficacy of chemotherapy. In this study, we found the following: (i) gallic acid (GA), a phenolic compound, potentiated the capacity of PTX to decrease proliferation and to cause G2/M cycle arrest in the PTX-resistant A2780AD ovarian cancer cell line; (ii) GA exerted a pro-oxidant action by increasing the production of reactive oxygen species (ROS), and co-treatment with the antioxidant agent N‑acetyl-L‑cysteine (NAC) prevented GA+PTX-induced cell proliferation inhibition and G2/M phase arrest; (iii) PTX stimulated ERK phosphorylation/activation, and co-treatment with the MEK/ERK inhibitor PD98049 potentiated the proliferation inhibition and G2/M phase arrest; (iv) and finally, GA abrogated the PTX-induced stimulation of ERK phosphorylation, a response that was prevented by co-treatment with NAC...
April 18, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29693187/malat1-affects-ovarian-cancer-cell-behavior-and-patient-survival
#3
Qunbo Lin, Wencai Guan, Weimin Ren, Lingyun Zhang, Jinguo Zhang, Guoxiong Xu
Epithelial ovarian cancer (EOC) is one of the most lethal malignancies of the female reproductive organs. Increasing evidence has revealed that long non‑coding RNAs (lncRNAs) participate in tumorigenesis. Metastasis associated lung adenocarcinoma transcript 1 (MALAT1) is an lncRNA and plays a role in various types of tumors. However, the function of MALAT1 on cellular behavior in EOC remains unclear. The current study explored the expression of MALAT1 in ovarian cancer tissues and in EOC cell lines. Quantitative RT‑PCR analysis revealed that the expression of MALAT1 was higher in human ovarian malignant tumor tissues and EOC cells than in normal ovarian tissues and non‑tumorous human ovarian surface epithelial cells, respectively...
April 19, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29692616/il-21-secreting-hucmscs-combined-with-mir-200c-inhibit-tumor-growth-and-metastasis-via-repression-of-wnt-%C3%AE-catenin-signaling-and-epithelial-mesenchymal-transition-in-epithelial-ovarian-cancer
#4
Yunxia Zhang, Jing Wang, Di Wu, Miao Li, Fenshu Zhao, Mulan Ren, Yunlong Cai, Jun Dou
Background: Epithelial ovarian cancer (EOC) with insidious characteristic manifests no symptoms in its early onset but most patients have advanced and distant cancer metastasis at diagnosis. Innovative early diagnosis and effective treatment of EOC are urgently needed. Methods: In the study, we developed a novel agent of IL-21-secreting human umbilical cord mesenchymal stem cells (hUCMSCs) combined with miR-200c to evaluate its effects on SKOV3 EOC in vitro and in vivo...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29690954/mir-150-suppresses-tumor-growth-in-melanoma-through-downregulation-of-myb
#5
Xiyan Sun, Chao Zhang, Yang Cao, Erbiao Liu
MiR-150 has been demonstrated to inhibit tumor progression in various human cancers, including colorectal cancer, ovarian cancer and thyroid cancer. However, the role of miR-150 in melanoma remains to be determined. In this study, we found that miR-150 was underexpressed in melanoma tissues and cell lines. Through transfection of miR-150 mimics, we found that miR-150 significantly inhibited the proliferation, migration and invasion of melanoma cells. In mechanism, we found that MYB was a target of miR-150 in melanoma cells...
April 24, 2018: Oncology Research
https://www.readbyqxmd.com/read/29690914/klk10-exon-3-unmethylated-pcr-product-concentration-a-new-potential-early-diagnostic-marker-in-ovarian-cancer-a-pilot-study
#6
Mustafa A El Sherbini, Amal A Mansour, Maha M Sallam, Emtiaz A Shaban, Zeinab A Shehab ElDin, Amr H El-Shalakany
BACKGROUND: KLK10 exon 3 hypermethylation correlated to tumor-specific lack of KLK10 expression in cancer cell lines and primary tumors. In the present study we investigate the possible role of KLK10 exon 3 methylation in ovarian tumor diagnosis and prognosis. RESULTS: Qualitative methylation-specific PCR (MSP) results did not show statistically significant differences in patient group samples (normal and tumor) where all samples were positive only for the unmethylated-specific PCR except for two malignant samples that were either doubly positive (serous carcinoma) or doubly negative (Sertoli-Leydig cell tumor) for the two MSP tests...
April 24, 2018: Journal of Ovarian Research
https://www.readbyqxmd.com/read/29689621/sall2-represses-cyclins-d1-and-e1-expression-and-restrains-g1-s-cell-cycle-transition-and-cancer-related-phenotypes
#7
Viviana Hermosilla, Ginessa Salgado, Elizabeth Riffo, David Escobar, Matías Hepp, Carlos Farkas, Mario Galindo, Violeta Morín, María A García-Robles, Ariel F Castro, Roxana Pincheira
SALL2 is a poorly characterized transcription factor that belongs to the Spalt-like family involved in development. Mutations on SALL2 have been associated with ocular coloboma and cancer. In cancers, SALL2 is deregulated, and is proposed as a tumor suppressor in ovarian cancer. SALL2 has been implicated in stemness, cell death, proliferation and quiescence. However, mechanisms underlying roles of SALL2 related to cancer remain largely unknown. Here, we investigated the role of SALL2 in cell proliferation by using mouse embryo fibroblasts (MEFs) derived from Sall2-/- mice...
April 24, 2018: Molecular Oncology
https://www.readbyqxmd.com/read/29688241/spectroscopy-electrochemistry-and-antiproliferative-properties-of-au-iii-pt-ii-and-cu-ii-complexes-bearing-modified-2-2-6-2-terpyridine-ligands
#8
Anna Maroń, Katarzyna Czerwińska, Barbara Machura, Luis Raposo, Catarina Roma-Rodrigues, Alexandra R Fernandes, Jan G Małecki, Agata Szlapa-Kula, Slawomir Kula, Stanisław Krompiec
Structural, spectroscopic and electrochemical properties of six complexes [AuCl(L1)](PF6)2·CH3CN (1), [AuCl(L2)](PF6)2 (2), [PtCl(L1)](BPh4)·CH3CN (3), [PtCl(L2)](SO3CF3) (4), [CuCl2(L1)] (5) and [CuCl2(L2)]·CH3CN (6) with modified 2,2':6',2''-terpyridine ligands, 4'-(4-methoxyphenyl)-2,2':6',2''-terpyridine (L1) and 4'-(4-methoxynaphthalen-1-yl)-2,2':6',2''-terpyridine (L2) were thoroughly investigated and a significant role of the substituent (4-methoxyphenyl or 4-methoxynaphthalen-1-yl) and the metal center was demonstrated...
April 24, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29688005/reversible-ph-responsive-behavior-of-ruthenium-ii-arene-complexes-with-tethered-carboxylate
#9
Francisco Martínez-Peña, Sonia Infante-Tadeo, Abraha Habtemariam, Ana M Pizarro
Five complexes of formula [Ru(η6 -C6 H5 CH2 COOH)(XY)Cl]Cl/Na (XY = ethylenediamine (1), o-phenylenediamine (2), phenanthroline (3), and oxalato (4)) and [Ru(η6 :κ1 -C6 H5 CH2 COO)(tmen)]Cl (tmen = N, N, N', N'-tetramethylethylenediamine, 5C) have been synthesized and fully characterized. Five new X-ray crystal structures ([Ru(η6 -C6 H5 CH2 COOH)(μ-Cl)Cl]2 , 1, 3, 4, and 5C·PF6 ) have been determined, which are the first examples of ruthenium(II) structures with phenylacetic acid as arene ligand. Furthermore, 5C·PF6 is the first example of a five-membered tether ring with a Ru(η6 :κ1 -arene:O) bond...
April 24, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29687293/psychosocial-stress-exposure-disrupts-mammary-gland-development
#10
Marianna B Johnson, Joscelyn N Hoffmann, Hannah M You, Ricardo R Lastra, Sully Fernandez, Jordan W Strober, Ahmad B Allaw, Matthew J Brady, Suzanne D Conzen, Martha K McClintock
Exposure to psychosocial stressors and ensuing stress physiology have been associated with spontaneous invasive mammary tumors in the Sprague-Dawley rat model of human breast cancer. Mammary gland (MG) development is a time when physiologic and environmental exposures influence breast cancer risk. However, the effect of psychosocial stress exposure on MG development remains unknown. Here, in the first comprehensive longitudinal study of MG development in nulliparous female rats (from puberty through young adulthood; 8-25 wks of age), we quantify the spatial gradient of differentiation within the MG of socially stressed (isolated) and control (grouped) rats...
April 23, 2018: Journal of Mammary Gland Biology and Neoplasia
https://www.readbyqxmd.com/read/29685880/integrative-kinome-profiling-identifies-mtorc1-2-inhibition-as-treatment-strategy-in-ovarian-clear-cell-carcinoma
#11
Joseph J Caumanns, Katrien Berns, G Bea A Wisman, Rudolf S N Fehrmann, Tushar Tomar, Harry Klip, Gert Jan Meersma, E Marielle Hijmans, Annemiek Gennissen, Evelien W Duiker, Desiree Weening, Hiroaki Itamochi, Roelof Jc Kluin, An K L Reyners, Michael J Birrer, Helga B Salvesen, Ignace Vergote, Els Van Nieuwenhuysen, James D Brenton, Elena I Braicu, Jolanta Kupryjanczyk, Beata Spiewankiewicz, Lorenza Mittempergher, Rene Bernards, Ate G J van der Zee, Steven de Jong
PURPOSE: Advanced stage ovarian clear cell carcinoma (OCCC) is unresponsive to conventional platinum-based chemotherapy. Frequent alterations in OCCC include deleterious mutations in the tumor suppressor ARID1A and activating mutations in the PI3K subunit PIK3CA. In this study, we aimed to identify currently unknown mutated kinases in OCCC patients and test druggability of downstream affected pathways in OCCC models. EXPERIMENTAL DESIGN: In a large set of OCCC patients (n=124), the human kinome (518 kinases) and additional cancer related genes were sequenced and copy number alterations were determined...
April 23, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29685168/role-of-bmi1-in-epithelial-ovarian-cancer-investigated-via-the-crispr-cas9-system-and-rna-sequencing
#12
Qianying Zhao, Qiuhong Qian, Dongyan Cao, Jiaxin Yang, Ting Gui, Keng Shen
BACKGROUND: B-cell-specific Moloney murine leukemia virus integration site 1 (BMI1) might be an appropriate biomarker in the management of epithelial ovarian cancer (EOC). However, the biological role of BMI1 and its relevant molecular mechanism needs further elaboration. Clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 system is an excellent genome-editing tool and is scarcely used in EOC studies. METHODS: We first applied CRISPR/Cas9 technique to silence BMI1 in EOC cells; thereafter we accomplished various in vivo and in vitro experiments to detect biological behaviors of ovarian cancer cells, including MTT, flow cytometry, Transwell, real-time polymerase chain reaction and western blotting assays, etc...
April 23, 2018: Journal of Ovarian Research
https://www.readbyqxmd.com/read/29684847/the-association-between-p53-protein-phosphorylation-at-serine-15-serine-20-and-sensitivity-of-cells-isolated-from-patients-with-ovarian-cancer-and-cell-lines-to-chemotherapy-in-in-vitro-study
#13
Iwona Kamińska, Julia K Bar
BACKGROUND: The association between p53 protein phosphorylated at serine 15 (Ser15), serine 20 (Ser20) and ovarian tumor cell sensitivity after chemotherapy was analyzed in order to define the influence of p53 activation on tumor cell sensitivity to chemotherapy. METHODS: The study was performed on ovarian cancer cell line (OvBH-1), colon adenocarcinoma metastasis to ovary (SW626) and on cells isolated from ascitic fluids from patients with ovarian cancer: with (p53+) or without (p53-) p53 nuclear protein accumulation...
December 15, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29684820/increased-oxidative-stress-mediates-the-antitumor-effect-of-parp-inhibition-in-ovarian-cancer
#14
Dong Hou, Zhaojian Liu, Xiuhua Xu, Qiao Liu, Xiyu Zhang, Beihua Kong, Jian-Jun Wei, Yaoqin Gong, Changshun Shao
PARP inhibitors have been widely tested in clinical trials, especially for the treatment of breast cancer and ovarian cancer, and were shown to be highly successful. Because PARP primarily functions in sensing and repairing DNA strand breaks, the therapeutic effect of PARP inhibition is generally believed to be attributed to impaired DNA repair. We here report that oxidative stress is also increased by PARP inhibition and mediates the antitumor effect. We showed that PARP1 is highly expressed in specimens of high grade serous ovarian carcinoma and its activity is required for unperturbed proliferation of ovarian cancer cells...
March 30, 2018: Redox Biology
https://www.readbyqxmd.com/read/29684708/structural-based-design-synthesis-and-antitumor-activity-of-novel-alloxazine-analogues-with-potential-selective-kinase-inhibition
#15
Waleed H Malki, Ahmed M Gouda, Hamdy E A Ali, Rabaa Al-Rousan, Doaa Samaha, Ashraf N Abdalla, Juan Bustamante, Zakaria Y Abd Elmageed, Hamed I Ali
Protein kinases are promising therapeutic targets for cancer therapy. Here, we applied multiple approaches to optimize the potency and selectivity of our reported alloxazine scaffold. Flexible moieties at position 2 of the hetero-tricyclic system were incorporated to fit into the ATP binding site and extend to the adjacent allosteric site and selectively inhibit protein kinases. This design led to potential selective inhibition of ABL1, CDK1/Cyclin A1, FAK, and SRC kinase by 30-59%. Cytotoxicity was improved by ∼50 times for the optimized lead (10b; IC50  = 40 nM) against breast cancer (MCF-7) cells...
April 17, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29684707/targeting-mitochondria-esters-of-rhodamine-b-with-triterpenoids-are-mitocanic-triggers-of-apoptosis
#16
Ratna Kancana Wolfram, Lucie Heller, René Csuk
Triterpenoic acids, ursolic acid (1), oleanolic acid (2), glycyrrhetinic acid (3) and betulinic acid (4) were converted into their corresponding methyl 5-8 and benzyl esters 9-12 or benzyl amides 21-24. These derivatives served as starting materials for the synthesis of pink colored rhodamine B derivatives 25-36 which were screened for cytotoxicity in colorimetric SRB assays. All of the compounds were cytotoxic for a variety of human tumor cell lines. The activity of the benzyl ester derivatives 29-32 was lower than the cytotoxicity of the methyl esters 25-28...
April 17, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29684152/association-between-proportion-of-nuclei-with-high-chromatin-entropy-and-prognosis-in-gynecological-cancers
#17
Birgitte Nielsen, Andreas Kleppe, Tarjei Sveinsgjerd Hveem, Manohar Pradhan, Rolf Anders Syvertsen, John Arne Nesheim, Gunnar Balle Kristensen, Jone Trovik, David James Kerr, Fritz Albregtsen, Håvard Emil Danielsen
Background: Nuclear texture analysis measuring differences in chromatin structure has provided prognostic biomarkers in several cancers. There is a need for improved cell-by-cell chromatin analysis to detect nuclei with highly disorganized chromatin. The purpose of this study was to develop a method for detecting nuclei with high chromatin entropy and to evaluate the association between the presence of such deviating nuclei and prognosis. Methods: A new texture-based biomarker that characterizes each cancer based on the proportion of high-chromatin entropy nuclei (<25% vs ≥25%) was developed on a discovery set of 175 uterine sarcomas...
April 18, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29682534/the-progress-of-t-cell-immunity-related-to-prognosis-in-gastric-cancer
#18
REVIEW
Ming Wei, Duo Shen, Sachin Mulmi Shrestha, Juan Liu, Junyi Zhang, Ying Yin
Gastric cancer is the fifth most common malignancy all over the world, and the factors that can affect progress and prognosis of the gastric cancer patients are various, such as TNM stages, invasive depth, and lymph node metastasis ratio. T cell immunity is important component of human immunity system and immunity responding to tumor and dysfunction or imbalance of T cell immunity will lead to serious outcomes for body. T cell immunity includes many different types of cells, CD4+ T cell, CD8+ T cell, memory cell, and so on, and each of them has special function on antitumor response or tumor immune escape which is revealed in lung cancer, colorectal cancer, breast cancer, ovarian cancer, and so on...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29682512/targeting-notch-signalling-pathway-of-cancer-stem-cells
#19
REVIEW
Vandana Venkatesh, Raghu Nataraj, Gopenath S Thangaraj, Murugesan Karthikeyan, Ashok Gnanasekaran, Shanmukhappa B Kaginelli, Gobianand Kuppanna, Chandrashekrappa Gowdru Kallappa, Kanthesh M Basalingappa
Cancer stem cells (CSCs) have been defined as cells within tumor that possess the capacity to self-renew and to cause the heterogeneous lineages of cancer cells that comprise the tumor. CSCs have been increasingly identified in blood cancer, prostate, ovarian, lung, melanoma, pancreatic, colon, brain and many more malignancies. CSCs have slow growth rate and are resistant to chemotherapy and radiotherapy that lead to the failure of traditional current therapy. Eradicating the CSCs and recurrence, is promising aspect for the cure of cancer...
2018: Stem Cell Investigation
https://www.readbyqxmd.com/read/29682189/cisplatin-liposome-and-6-amino-nicotinamide-combination-to-overcome-drug-resistance-in-ovarian-cancer-cells
#20
Daniela Catanzaro, Silvia Nicolosi, Veronica Cocetta, Marika Salvalaio, Andrea Pagetta, Eugenio Ragazzi, Monica Montopoli, Gianfranco Pasut
Ovarian cancer is an aggressive and lethal cancer usually treated by cytoreductive surgery followed by chemotherapy. Unfortunately, after an initial response, many patients relapse owing mainly to the development of resistance against the standard chemotherapy regime, carboplatin/paclitaxel, which is also affected by heavy side effects. In view to addressing such issues here, an association of liposomal cisplatin with 6-amino nicotinamide is investigated. It is known that resistant cells increase their demand for glucose, which is partially redirected toward the pentose phosphate pathway (PPP)...
March 30, 2018: Oncotarget
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