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Cancer AND apoptosis

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https://www.readbyqxmd.com/read/27926532/novel-parp1-2-inhibitor-mefuparib-hydrochloride-elicits-potent-in-vitro-and-in-vivo-anticancer-activity-characteristic-of-high-tissue-distribution
#1
Jin-Xue He, Meng Wang, Xia-Juan Huan, Chuan-Huizi Chen, Shan-Shan Song, Ying-Qing Wang, Xue-Mei Liao, Cun Tan, Qian He, Lin-Jiang Tong, Yu-Ting Wang, Xiao-Hua Li, Yi Su, Yan-Yan Shen, Yi-Ming Sun, Xin-Ying Yang, Yi Chen, Zhi-Wei Gao, Xiao-Yan Chen, Bing Xiong, Xiu-Lian Lu, Jian Ding, Chun-Hao Yang, Ze-Hong Miao
The approval of poly(ADP-ribose) polymerase (PARP) inhibitor AZD2281 in 2014 marked the successful establishment of the therapeutic strategy targeting homologous recombination repair defects of cancers in the clinic. However, AZD2281 has poor water solubility, low tissue distribution and relatively weak in vivo anticancer activity, which appears to become limiting factors for its clinical use. In this study, we found that mefuparib hydrochloride (MPH) was a potent PARP inhibitor, possessing prominent in vitro and in vivo anticancer activity...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27926525/apoptosis-linked-gene-2-promotes-breast-cancer-growth-and-metastasis-by-regulating-the-cytoskeleton
#2
Juan Qin, Dengwen Li, Yunqiang Zhou, Songbo Xie, Xin Du, Ziwei Hao, Ruming Liu, Xinqi Liu, Min Liu, Jun Zhou
Breast cancer is the most prevalent cancer in women. Although it begins as local disease, breast cancer frequently metastasizes to the lymph nodes and distant organs. Therefore, novel therapeutic targets are needed for the management of this disease. Apoptosis-linked gene 2 (ALG-2) is a calcium-binding protein crucial for diverse physiological processes and has recently been implicated in cancer development. However, it remains unclear whether this protein is involved in the pathogenesis of breast cancer. Here, we demonstrate that the expression of ALG-2 is significantly upregulated in breast cancer tissues and is correlated with clinicopathological characteristics indicative of tumor malignancy...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27926517/suberoylanilide-hydroxamic-acid-induced-specific-epigenetic-regulation-controls-leptin-induced-proliferation-of-breast-cancer-cell-lines
#3
Xiuyan Feng, Han Han, Dan Zou, Jiaming Zhou, Weiqiang Zhou
Breast cancer is one of the most common malignancies among women in the world, investigating the characteristics and special transduction pathways is important for better understanding breast development and tumorigenesis. Leptin, a peptide hormone secreted from white adipocytes, may be an independent risk factor for breast cancer.Here, we treated suberoylanilide hydroxamic acid (SAHA) on Leptin-induced cell proliferation and invasion in the estrogen-receptor-positive breast cancer cell line MCF-7 and triple-negative breast cancer cell line MDA-MB-231...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27926513/mael-is-essential-for-cancer-cell-survival-and-tumorigenesis-through-protection-of-genetic-integrity
#4
Su-Hyeon Kim, Eun-Ran Park, Eugene Cho, Won-Hee Jung, Ju-Yeon Jeon, Hyun-Yoo Joo, Kee-Ho Lee, Hyun-Jin Shin
Germ line-specific genes are activated in somatic cells during tumorigenesis, and are accordingly referred to as cancer germline genes. Such genes that act on piRNA (Piwi-interacting RNA) processing play an important role in the progression of cancer cells. Here, we show that the spermatogenic transposon silencer maelstrom (Mael), a piRNA-processing factor, is required for malignant transformation and survival of cancer cells. A specific Mael isoform was distinctively overexpressed in diverse human cancer cell lines and its depletion resulted in cancer-specific cell death, characterized by apoptosis and senescence, accompanied by an increase in reactive oxygen-species and DNA damage...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27926503/foxd3-is-a-tumor-suppressor-of-colon-cancer-by-inhibiting-egfr-ras-raf-mek-erk-signal-pathway
#5
Kun Li, Qunfeng Guo, Jun Yang, Hui Chen, Kewen Hu, Juan Zhao, Shunxin Zheng, Xiufeng Pang, Sufang Zhou, Yongyan Dang, Lei Li
Forkhead box D3 (FOXD3), as a transcriptional repressor, is well known to be involved in the regulation of development. Although FoxD3 is associated with several cancers, its role in colon cancer and the underlying mechanism are still unclear. Here, we first showed that FOXD3 knockdown dramatically increased the proliferation of human colon cancer cells, enhanced cell invasive ability and inhibited cell apoptosis. In vivo xenograft studies confirmed that the FOXD3-knockdown cells were more tumorigenic than the controls...
December 3, 2016: Oncotarget
https://www.readbyqxmd.com/read/27926488/blocking-ezh2-methylation-transferase-activity-by-gsk126-decreases-stem-cell-like-myeloma-cells
#6
Delong Zeng, Maoxing Liu, Jingxuan Pan
EZH2 is a critical epigenetic regulator that is deregulated in various types of cancers including multiple myeloma (MM). In the present study, we hypothesized that targeting EZH2 might induce apoptosis in myeloma cells including stem cell-like cells (CSCs). We investigated the effect of EZH2 inhibition on MM cells using a potent inhibitor (GSK126). The results showed that GSK126 effectively abrogated the methylated histone 3 (H3K27me3) level in MM.1S and LP1 cells, and inhibited the number of live cells and colony formation in soft agar of six MM cell lines...
December 2, 2016: Oncotarget
https://www.readbyqxmd.com/read/27925170/associations-of-microrna-single-nucleotide-polymorphisms-and-disease-risk-and-pathophysiology
#7
REVIEW
Xiaoxiao Liu, Zhijun Han, Chengjian Yang
Single nucleotide polymorphisms (SNPs) are genetic variations that contribute to human phenotypes associated with various diseases. SNPs are involved in the regulation of a broad range of physiological and pathological processes, such as cellular senescence, apoptosis, inflammation, and immune response, by up-regulating the expression of classical inflammation markers. Recent studies have suggested that SNPs located in gene-encoding microRNAs (miRNAs) affect various aspects of diseases by regulating the expression or activity of miRNAs...
December 7, 2016: Clinical Genetics
https://www.readbyqxmd.com/read/27925035/insulin-like-growth-factor-1-gene-polymorphism-and-breast-cancer-risk
#8
Danylo R Costa-Silva, Maria DA Conceição Barros-Oliveira, Rafael S Borges, Cléciton B Tavares, Umbelina S Borges, Francisco A Alves-Ribeiro, Vladimir C Silva, Benedito B DA Silva
Insulin-like Growth Factor-1 (IGF-1) gene polymorphism has been associated with an increased risk for breast cancer. IGF-1 is a key regulator of proliferation, cell differentiation and apoptosis. It has important mitogenic and anti-apoptotic activities in normal cells and in breast cancer cells, acting synergistically with estrogen to increase neoplastic cell proliferation. This review aims to present the recent finds of IGF-1 gene polymorphism and its relationship with the risk of breast cancer through following the polymorphic dinucleotide repeat cytosine-adenine (CA) and single nucleotide polymorphisms (SNPs) by searching in the PubMed database publications focused studies published from 2010 to 2015 related to IGF-1 gene polymorphism and breast cancer risk...
December 1, 2016: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/27924828/rpl3-promotes-the-apoptosis-of-p53-mutated-lung-cancer-cells-by-down-regulating-cbs-and-nf%C3%AE%C2%BAb-upon-5-fu-treatment
#9
Annapina Russo, Assunta Saide, Roberta Cagliani, Monica Cantile, Gerardo Botti, Giulia Russo
5-FU is a chemotherapy drug commonly used for the treatment of human cancers; however drug resistance represents a major challenge for its clinical application. In the present study, we reporte that rpL3 induced by 5-FU treatment in Calu-6 cells represses CBS transcription and reduces CBS protein stability leading to a decrease of CBS protein levels. rpL3 also regulates negatively the activation of NFκB by preventing NFκB nuclear translocation through IκB-α up-regulation. Furthermore, we demonstrate that rpL3 significantly enhances the apoptosis of 5-FU treated Calu-6 cells promoting the overexpression of the pro-apoptotic proteins Bax and the inhibition of the anti-apoptotic protein Bcl-2...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924730/congenital-malformations-attributed-to-prenatal-exposure-to-cyclophosphamide
#10
Padmanabhan Rengasamy
Cyclophosphamide (CPA) remains one of the most widely prescribed anticancer drugs. It is also used in the treatment of rheumatoid arthritis, childhood nephrotic syndrome and systemic lupus erythematosus. It is a potent immunosuppressive agent. It is commonly used in blood and bone marrow transplantation. With the growing trend among women postponing childbearing, the number of women who are diagnosed with breast cancer is also increasing thus escalating the chances of exposure of the unborn child to antineoplastic drugs...
December 6, 2016: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/27924725/anticancer-drug-targets-of-salvia-phytometabolites-chemistry-biology-and-omics
#11
Da-Cheng Hao, Guang-Bo Ge, Pei-Gen Xiao
Salvia displays diverse anticancer properties, which are attributable to their diterpene and phenolic contents. There is no comprehensive review on the anticancer diversity and molecular targets of Salvia components. We investigate the diversity and molecular targets of Salvia phytometabolites responsible for the prevention and treatment of cancer and sarcoma. Traditional therapeutic knowledge suggests that Salvia species can be used to develop anticancer drugs. Lots of concerns have been raised for tanshinone (Tan) IIA and cryptotanshinone...
December 7, 2016: Current Drug Targets
https://www.readbyqxmd.com/read/27924630/gelsolin-like-actin-capping-protein%C3%A2-is-associated-with-patient-prognosis-cellular-apoptosis-and-proliferation-in-prostate-cancer
#12
Tieqiu Li, Xiuqin Hong, Jie Zhao, Yili Teng, Jue Zheng, Hao Chen, Henggui Chen, Huahua Li
AIM: To investigate the role of gelsolin-like actin-capping protein (CapG) in prostate cancer (PCa). MATERIALS & METHODS: CapG expression and its correlation with clinicopathological characters and patient prognosis were analyzed in 76 cases of PCa by immunohistochemistry and qRT-PCR. Then, the influence of CapG downregulation on cell apoptosis and proliferation were assessed. RESULTS: CapG expression in PCa was significantly higher compared with those in matched adjacent noncancerous prostate tissues, and significantly correlated with clinicopathological characters...
December 7, 2016: Biomarkers in Medicine
https://www.readbyqxmd.com/read/27924160/multivalent-targeting-based-delivery-of-therapeutic-peptide-using-ap1-elp-carrier-for-effective-cancer-therapy
#13
Vijaya Sarangthem, Yunjae Kim, Thoudam Debraj Singh, Bo-Yeon Seo, Sun-Ha Cheon, Young-Jin Lee, Byung-Heon Lee, Rang-Woon Park
Elastin-like polypeptide (ELP)-based drug delivery has been utilized for various applications including cancer therapies for many years. Genetic incorporation of internalization ligands and cell-targeting peptides along with ELP polymer enhanced tumor accumulation and retention time as well as stability and activities of the drug conjugates. Herein, we described a unique delivery system comprised of genetically engineered ELP incorporated with multiple copies of IL-4 receptor targeting peptide (AP1) periodically and proapoptotic peptide (KLAKLAK)2 referred to as AP1-ELP-KLAK...
2016: Theranostics
https://www.readbyqxmd.com/read/27924159/in-vitro-and-in-vivo-evaluation-of-89-zr-ds-8273a-as-a-theranostic-for-anti-death-receptor-5-therapy
#14
Ingrid J G Burvenich, Fook-Thean Lee, Nancy Guo, Hui K Gan, Angela Rigopoulos, Adam C Parslow, Graeme J O'Keefe, Sylvia J Gong, Henri Tochon-Danguy, Stacey E Rudd, Paul S Donnelly, Masakatsu Kotsuma, Toshiaki Ohtsuka, Giorgio Senaldi, Andrew M Scott
Background: DS-8273a, an anti-human death receptor 5 (DR5) agonistic antibody, has cytotoxic activity against human cancer cells and induces apoptosis after specific binding to DR5. DS-8273a is currently being used in clinical Phase I trials. This study evaluated the molecular imaging of DR5 expression in vivo in mouse tumor models using SPECT/CT and PET/MRI, as a tool for drug development and trial design. Methods: DS-8273a was radiolabeled with indium-111 and zirconium-89. Radiochemical purity, immunoreactivity, antigen binding affinity and serum stability were assessed in vitro...
2016: Theranostics
https://www.readbyqxmd.com/read/27924151/effect-of-sp600125-on-the-mitotic-spindle-in-hela-cells-leading-to-mitotic-arrest-endoreduplication-and-apoptosis
#15
Donia Mili, Kaouthar Abid, Imed Rjiba, Abderraouf Kenani
BACKGROUND: The JNK inhibitor SP600125 strongly inhibits cell proliferation in many human cancer cells by blocking mitosis progression and inducing cell death. Despite, all this study, the mechanism by which SP600125 inhibits mitosis-related effects in human cervical cells (HeLa cells) remains unclear. In this study, we investigated the effects of SP600125 on the cell viability, cell cycle, and on the spindle assembly during mitosis in HeLa cells. METHODS: To explore this approach, we used a viability test, an immunofluorescence microscopy to detect Histone phosphorylation and mitotic spindle aberrations...
2016: Molecular Cytogenetics
https://www.readbyqxmd.com/read/27924072/p53-and-murine-double-mimute-2-mdm2-expression-changes-and-significance-in-different-types-of-endometrial-lesions
#16
Zhongyong Jiang, Wanqing Xu, Gang Dan, Yuan Liu, Jie Xiong
BACKGROUND Endometrial lesions are common in obstetrics and gynecology, including endometrial polyps, uterine adenomyosis, and malignant endometrial adenocarcinoma. Endometrial lesions seriously affect women's health, fertility, quality of life, and life safety. As a pro-apoptosis gene, p53 is considered to be closely related with human tumors. Murine double mimute 2 (MDM2) is an oncogene that can promote tumor occurrence and development. P53 and MDM2 expression and significance in different types of endometrial lesions have not been fully elucidated...
December 7, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27924057/pazopanib-a-novel-multi-kinase-inhibitor-shows-potent-antitumor-activity-in-colon-cancer-through-puma-mediated-apoptosis
#17
Lingling Zhang, Huanan Wang, Wei Li, Juchang Zhong, Rongcheng Yu, Xinfeng Huang, Honghui Wang, Zhikai Tan, Jiangang Wang, Yingjie Zhang
Colon cancer is still the third most common cancer which has a high mortality but low five-year survival rate. Novel tyrosine kinase inhibitors (TKI) such as pazopanib become effective antineoplastic agents that show promising clinical activity in a variety of carcinoma, including colon cancer. However, the precise underlying mechanism against tumor is unclear. Here, we demonstrated that pazopanib promoted colon cancer cell apoptosis through inducing PUMA expression. Pazopanib induced p53-independent PUMA activation by inhibiting PI3K/Akt signaling pathway, thereby activating Foxo3a, which subsequently bound to the promoter of PUMA to activate its transcription...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27923993/specific-targeting-of-telomeric-multimeric-g-quadruplexes-by-a-new-triaryl-substituted-imidazole
#18
Ming-Hao Hu, Shuo-Bin Chen, Bo Wang, Tian-Miao Ou, Lian-Quan Gu, Jia-Heng Tan, Zhi-Shu Huang
Multiple G-quadruplex units in the 3'-terminal overhang of human telomeric DNA can associate and form multimeric structures. The specific targeting of such distinctive higher-order G-quadruplexes might be a promising strategy for developing selective anticancer agents with fewer side effects. However, thus far, only a few molecules were found to selectively bind to telomeric multimeric G-quadruplexes, and their effects on cancer cells were unknown. In this study, a new triaryl-substituted imidazole derivative called IZNP-1: was synthesized and found to specifically bind to and strongly stabilize telomeric multimeric G-quadruplexes through intercalating into the pocket between the two quadruplex units...
December 6, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27923905/%C3%AE-lapachone-inhibits-lung-metastasis-of-colorectal-cancer-by-inducing-apoptosis-of-ct26-cells
#19
Ji-Ye Kee, Yo-Han Han, Jinbong Park, Dae-Seung Kim, Jeong-Geon Mun, Kwang Seok Ahn, Hyun-Jung Kim, Jae-Young Um, Seung-Heon Hong
BACKGROUND: β-Lapachone is a quinone-containing compound found in red lapacho (Tabebuia impetiginosa, syn. T avellanedae) trees. Lapacho has been used in traditional medicine by several South and Central American indigenous people to treat various types of cancer. The purpose of this study was to investigate the antimetastatic properties of β-lapachone and the underlying mechanisms using colon cancer cells. METHODS: This research used metastatic murine colon cancer cell lines, colon 26 (CT26) and colon 38 (MC38)...
December 5, 2016: Integrative Cancer Therapies
https://www.readbyqxmd.com/read/27923774/mechanistic-insights-into-selective-killing-of-oxphos-dependent-cancer-cells-by-arctigenin
#20
Karin Brecht, Virginie Riebel, Philippe Couttet, Franziska Paech, Armin Wolf, Salah-Dine Chibout, Francois Pognan, Stephan Krähenbühl, Marianne Uteng
Arctigenin has previously been identified as a potential anti-tumor treatment for advanced pancreatic cancer. However, the mechanism of how arctigenin kills cancer cells is not fully understood. In the present work we studied arctigenin's mechanism of toxicity in the human pancreatic cell line, Panc-1, with special emphasis on the mitochondria. A comparison of Panc-1 cells cultured in glucose versus galactose medium was applied, allowing assessments of effects in glycolytic versus oxidative phosphorylation (OXPHOS)-dependent Panc-1 cells...
December 3, 2016: Toxicology in Vitro: An International Journal Published in Association with BIBRA
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