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https://www.readbyqxmd.com/read/27935863/a-ruthenium-anticancer-compound-interacts-with-histones-and-impacts-differently-on-epigenetic-and-death-pathways-compared-to-cisplatin
#1
Licona Cynthia, Spaety Marie-Elodie, Capuozzo Antonella, Ali Moussa, Santamaria Rita, Armant Olivier, Delalande Francois, Van Dorsselaer Alain, Cianferani Sarah, Spencer John, Pfeffer Michel, Mellitzer Georg, Gaiddon Christian
Ruthenium complexes are considered as potential replacements for platinum compounds in oncotherapy. Their clinical development is handicapped by a lack of consensus on their mode of action. In this study, we identify three histones (H3.1, H2A, H2B) as possible targets for an anticancer redox organoruthenium compound (RDC11). Using purified histones, we confirmed an interaction between the ruthenium complex and histones that impacted on histone complex formation. A comparative study of the ruthenium complex versus cisplatin showed differential epigenetic modifications on histone H3 that correlated with differential expression of histone deacetylase (HDAC) genes...
November 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/27911090/antitumor-activity-of-portulaca-oleracea-l-polysaccharide-on-hela-cells-through-inducing-tlr4-nf-%C3%AE%C2%BAb-signaling
#2
Rui Zhao, Tao Zhang, Baoling Ma, Xing Li
Abstarct We have previously shown that Portulaca oleracea L. polysaccharide (POL-P3b) possesses the ability to inhibit cervical cancer cell growth in vitro and in vivo. In this study, we explored how toll-like receptor 4 (TLR4) signaling correlated with the antitumor mechanism of POL-P3b. Western blotting was utilized to detect the expression of TLR4 and the downstream signaling pathway. The level of inflammatory mediator was quantified using enzyme-linked immunosorbent assay (ELISA) kits. The effects of POL-P3b on the proliferation and apoptosis in HeLa cells were determined by WST-8 assay and Hoechst 33342/propidium iodide (PI) assay...
December 2, 2016: Nutrition and Cancer
https://www.readbyqxmd.com/read/27895949/primary-ewing-s-sarcoma-of-the-spine-in-a-two-year-old-boy
#3
Ali J Electricwala, Jaffer T Electricwala
Ewing's Sarcoma (ES) is a highly malignant bone tumour. It may involve any part of the skeleton but the most frequent parts are the ilium and diaphysis of femur and tibia (Alfeeli et al., 2005; Zhu et al., 2012). Primary ES of the spine is extremely rare (Yan et al., 2011). It accounts for only 3.5 to 14.9 percent of all primary bone sarcomas. The age of presentation ranges from 12 to 24 years (median 21 years) (Ferguson, 1999; Sharafuddin et al., 1992; Klimo Jr. et al., 2009). We report an unusual case of primary ES of the spine in a two-year-old boy, who presented to us with paraparesis and features of cauda equina syndrome...
2016: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/27863037/multivalent-aptamer-rna-conjugates-for-simple-and-efficient-delivery-of-doxorubicin-sirna-into-multidrug-resistant-cells
#4
Hyosook Jeong, Soo Hyeon Lee, Yeonju Hwang, Hyundong Yoo, Heesun Jung, Sun Hwa Kim, Hyejung Mok
Multivalent aptamer-siRNA conjugates containing multiple mucin-1 aptamers and BCL2-specific siRNA are synthesized, and doxorubicin, an anthracycline anticancer drug, is loaded into these conjugates through intercalation with nucleic acids. These doxorubicin-incorporated multivalent aptamer-siRNA conjugates are transfected to mucin-1 overexpressing MCF-7 breast cancer cells and their multidrug-resistant cell lines. Doxorubicin-incorporated multivalent aptamer-siRNA conjugates exert promising anticancer effects, such as activation of caspase-3/7 and decrease of cell viability, on multidrug-resistant cancer cells because of their high intracellular uptake efficiency...
November 10, 2016: Macromolecular Bioscience
https://www.readbyqxmd.com/read/27830982/excretion-and-toxicity-evaluation-of-131-i-sennoside-a-as-a-necrosis-avid-agent
#5
Zhiqi Yin, Lidan Sun, Qiaomei Jin, Shaoli Song, Yuanbo Feng, Hong Liao, Yicheng Ni, Jian Zhang, Wei Liu
1. Sennoside A (SA) is a newly identified necrosis avid agent that shows capability for imaging diagnosis and tumor therapy. As a water-soluble compound, (131)I-Sennoside A ((131)I-SA) might be excreted mainly through the kidneys with possibility of nephrotoxicity. 2. To further verify excretion pathway and examine nephrotoxicity of (131)I-SA, excretion, and nephrotoxicity were appraised. The pharmacokinetics, hepatotoxicity and hematotoxicity of (131)I-SA were also evaluated to accelerate its possible clinical translation...
November 10, 2016: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/27802366/antitumor-effects-of-orally-and-intraperitoneally-administered-chitosan-oligosaccharides-coss-on-s180-bearing-residual-mouse
#6
Pan Zou, Xin Yang, Yanxin Zhang, Pengfei Du, Shoujun Yuan, Dexuan Yang, Jing Wang
Chitosan oligosaccharides (COSs) are hydrolysate mixture of chitin and possess various biomedical properties, such as antimicrobial, immunoenhancing, and antitumor effects. Antiproliferation activity of COS and commercially available samples was compared in the terms of A549 and HCT-116 cells. Ten tumor cells were used to estimate cytotoxicity of COS. Although there were some researches on the antitumor effects of COS, we highlighted the in vivo antitumor activities of COS administrated orally and intraperitoneally on S180-bearing/residual mouse...
November 1, 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27614362/endogenous-very-small-embryonic-like-stem-cells-critical-review-therapeutic-potential-and-a-look-ahead
#7
Deepa Bhartiya, Ambreen Shaikh, Sandhya Anand, Hiren Patel, Sona Kapoor, Kalpana Sriraman, Seema Parte, Sreepoorna Unni
BACKGROUND: Both pluripotent very small embryonic-like stem cells (VSELs) and induced pluripotent stem (iPS) cells were reported in 2006. In 2012, a Nobel Prize was awarded for iPS technology whereas even today the very existence of VSELs is not well accepted. The underlying reason is that VSELs exist in low numbers, remain dormant under homeostatic conditions, are very small in size and do not pellet down at 250-280g. The VSELs maintain life-long tissue homeostasis, serve as a backup pool for adult stem cells and are mobilized under stress conditions...
September 10, 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27593990/towards-targeted-cancer-therapy-aptamer-or-oncolytic-virus
#8
Kei X Tan, Michael K Danquah, Amandeep Sidhu, Clarence M Ongkudon, Sie Yon Lau
Cancer is a leading cause of global mortality. Whilst anticancer awareness programs have increased significantly over the years, scientific research into the development of efficient and specific drugs to target cancerous cells for enhanced therapeutic effects has not received much clinical success. Chemotherapeutic agents are incapable of acting specifically on cancerous cells, thus causing low therapeutic effects accompanied by toxicity to surrounding normal tissues. The search for smart, highly specific and efficient cancer treatments and delivery systems continues to be a significant research endeavor...
September 1, 2016: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27529342/changes-of-brain-glucose-metabolism-in-the-pretreatment-patients-with-non-small-cell-lung-cancer-a-retrospective-pet-ct-study
#9
Weishan Zhang, Ning Ning, Xianjun Li, Gang Niu, Lijun Bai, Youmin Guo, Jian Yang
OBJECTIVE: The tumor-to-brain communication has been emphasized by recent converging evidences. This study aimed to compare the difference of brain glucose metabolism between patients with non-small cell lung cancer (NSCLC) and control subjects. METHODS: NSCLC patients prior to oncotherapy and control subjects without malignancy confirmed by 6 months follow-up were collected and underwent the resting state 18F-fluoro-D-glucose (FDG) PET/CT. Normalized FDG metabolism was calculated by a signal intensity ratio of each brain region to whole brain...
2016: PloS One
https://www.readbyqxmd.com/read/27512677/oncolytic-sendai-virus-based-virotherapy-for-cancer-recent-advances
#10
REVIEW
Kotaro Saga, Yasufumi Kaneda
Many drugs have been developed and optimized for the treatment of cancer; however, it is difficult to completely cure cancer with anticancer drugs alone. Therefore, the development of new therapeutic technologies, in addition to new anticancer drugs, is necessary for more effective oncotherapy. Oncolytic viruses are one potential new anticancer strategy. Various oncolytic viruses have been developed for safe and effective oncotherapy. Recently, Sendai virus-based oncotherapy has been reported by several groups, and attention has been drawn to its unique anticancer mechanisms, which are different from those of the conventional oncolytic viruses that kill cancer cells by cancer cell-selective replication...
2015: Oncolytic Virotherapy
https://www.readbyqxmd.com/read/27382298/xuefuzhuyu-tang-exerts-antitumor-effects-by-inhibiting-glioma-cell-metastasis-and-invasion-via-regulating-tumor-microenvironment
#11
Jianmin Liu, Ji Zhang, Liangwen Huang, Xuhong Zhu, Wei Chen, Peng Hu
BACKGROUND: XuefuZhuyu Tang (XZT) is a traditional Chinese herb used for destagnation and is currently being used for oncotherapy. This study was intended to assess the effects of XZT on glioma along with its anticancer mechanism. MATERIALS AND METHODS: U251 cells were divided into five groups: CNC (cells were cultured with normal saline), TSC (cells were treated with TaohongSiwu Tang [TST]), XSC (cells were treated with XZT), THC (cells were treated with homogenate of TST), and XHC (cells were treated with homogenate of XZT)...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27356586/synergistic-chemo-photothermal-therapy-of-breast-cancer-by-mesenchymal-stem-cell-encapsulated-yolk-shell-gnr-hpmo-ptx-nanospheres
#12
Jiang Wu, Ying Liu, Yuxia Tang, Shouju Wang, Chunyan Wang, Yanjun Li, Xiaodan Su, Jihong Tian, Ying Tian, Jing Pan, Yunyan Su, Hong Zhu, Zhaogang Teng, Guangming Lu
Mesenchymal stem cells (MSCs) have attracted increasing attention as vehicles for cancer treatment. Herein, MSC-based synergistic oncotherapy strategy is presented for the first time. To achieve this goal, yolk-shell structured gold nanorod embedded hollow periodic mesoporous organosilica nanospheres (GNR@HPMOs) with high paclitaxel (PTX) loading capability and excellent photothermal transfer ability upon near-infrared (NIR) light irradiation are first prepared. Cytotoxicity and migration assays show that the viability and tumor-homing capability of MSCs are well-retained after internalization of high content of PTX loaded GNR@HPMOs (denoted as GNR@HPMOs-PTX)...
July 20, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27203200/ewe-ovarian-tissue-vitrification-a-model-for-the-study-of-fertility-preservation-in-women
#13
REVIEW
Franciele Osmarini Lunardi, Casie Shantel Bass, Marcelo Picinin Bernuci, Roberta Nogueira Chaves, Laritza Ferreira Lima, Renato Félix da Silva, José Ricardo de Figueiredo, Ana Paula Ribeiro Rodrigues
Emergency in vitro fertilization followed by embryo vitrification is one feasible fertility preservation option for cancer patients. However, its clinical application has several limitations. Hormonal stimulation delays the initiation of oncotherapy and it is contraindicated in hormone-sensitive cancers or for use in pre-pubertal females. Vitrification of ovarian cortical tissue prior to the start of cancer treatment could be utilized for autotransplantation or for in vitro maturation of follicles enclosed in ovarian tissue...
2015: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/27013185/altered-expression-of-stromal-interaction-molecule-stim-calcium-release-activated-calcium-channel-protein-orai-and-inositol-1-4-5-trisphosphate-receptors-ip3rs-in-cancer-will-they-become-a-new-battlefield-for-oncotherapy
#14
REVIEW
Jing Wen, Ying-Cheng Huang, Huan-Huan Xiu, Zhi-Ming Shan, Kang-Qing Xu
The stromal interaction molecule (STIM)-calcium release-activated calcium channel protein (ORAI) and inositol 1,4,5-trisphosphate receptors (IP3Rs) play pivotal roles in the modulation of Ca(2+)-regulated pathways from gene transcription to cell apoptosis by driving calcium-dependent signaling processes. Increasing evidence has implicated the dysregulation of STIM-ORAI and IP3Rs in tumorigenesis and tumor progression. By controlling the activities, structure, and/or expression levels of these Ca(2+)-transporting proteins, malignant cancer cells can hijack them to drive essential biological functions for tumor development...
2016: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/26971293/glioblastoma-multiforme-in-patients-with-history-of-extracranial-cancer-case-series
#15
O Kalita, R Trojanec, M Megova, M Hajduch, M Vaverka, L Hrabalek, M Zlevorova, J Drabek, L Tuckova, J Vrbkova
OBJECTIVES: Significant progress in treatment strategies improves the expectations of patients with extracranial cancers. Metastases are the primary consideration in patients with cancer history. In the case of neurologic disorders, the patient should undergo brain MRI. A rationale is presented for surgery, whole-brain or stereotactic radiotherapy, or chemotherapy. Recently, we have encountered misdiagnosed primary malignant brain tumours in patients with oncologic history who had been admitted for surgery for brain metastases...
May 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/26952411/hydrothermal-fabrication-of-porous-hollow-hydroxyapatite-microspheres-for-a-drug-delivery-system
#16
Wen Lai, Cen Chen, Xiaoyuan Ren, In-Seop Lee, Guohua Jiang, Xiangdong Kong
Porous hollow hydroxyapatite microspheres (PHHMs) are the promising biomaterials, owing to their excellent biocompatibility, biodegradability and bioactivity. PHHMs have been used as drug controlled carriers due to their advantages such as large drug loading capacity, nanochannels for drug loading and release and high specific surface area. In this study, PHHMs were prepared successfully in Na2HPO4 solution by an anion-exchange process using vaterite CaCO3 through a hydrothermal method. The previous vaterite CaCO3 was synthesized by a polymer-templated method in the poly(styrene sulfonic acid) sodium salt (PSS) aqueous solutions...
May 2016: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/26894988/codelivery-of-doxorubicin-and-shakt1-by-poly-ethylenimine-glycyrrhetinic-acid-nanoparticles-to-induce-autophagy-mediated-liver-cancer-combination-therapy
#17
Feng-Zhen Wang, Lei Xing, Zheng-hai Tang, Jin-Jian Lu, Peng-Fei Cui, Jian-Bing Qiao, Lei Jiang, Hu-Lin Jiang, Li Zong
Combination therapy has been developed as a promising therapeutic approach for hepatocellular carcinoma therapy. Here we report a low toxicity and high performance nanoparticle system that was self-assembled from a poly(ethylenimine)-glycyrrhetinic acid (PEI-GA) amphiphilic copolymer as a versatile gene/drug dual delivery nanoplatform. PEI-GA was synthesized by chemical conjugation of hydrophobic GA moieties to the hydrophilic PEI backbone via an acylation reaction. The PEI-GA nanocarrier could encapsulate doxorubicin (DOX) efficiently with loading level about 12% and further condense DNA to form PEI-GA/DOX/DNA complexes to codeliver drug and gene...
April 4, 2016: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/26884968/in-vitro-effects-of-mitomycin-c-on-the-proliferation-of-the-non-small-cell-lung-cancer-line-a549
#18
Qi An, Chao Han, Yubing Zhou, Feng Li, Duolu Li, Xiaojian Zhang, Zujiang Yu, Zhenfeng Duan, Quancheng Kan
Non-small-cell lung cancer (NSCLC) is the leading cause of death from cancer in the United States. Chemotherapy prolongs survival among patients with advanced disease, but at the cost of clinically significant adverse effects. As a novel promising oncotherapy method, induced differentiation by mitomycin C has been applied for NSCLC therapy at recent year. In this study, the molecular mechanism of differentiation interruption by mitomycin C in the NSCLC line A549 was investigated. High dosage of mitomycin C (300 µM) could significantly inhibit cell proliferation (P < 0...
2015: International Journal of Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/26861264/alisol-f-24-acetate-enhances-chemosensitivity-and-apoptosis-of-mcf-7-dox-cells-by-inhibiting-p-glycoprotein-mediated-drug-efflux
#19
Guixiang Pan, Tingting Li, Qingqing Zeng, Xiaoming Wang, Yan Zhu
Multidrug resistance (MDR) is a prime reason for numerous failed oncotherapy approaches. In the present study, we investigated whether Alisol F 24 acetate (ALI) could reverse the MDR of MCF-7/DOX cells, a multidrug-resistant human breast cancer cell line. We found that ALI was a potent P-glycoprotein (P-gp) inhibitor, in the Caco-2-monolayer cell model. ALI showed a significant and concentration-dependent cytotoxic effect on MCF-7/DOX cells in combination with doxorubicin by increasing intracellular accumulation and inducing nuclear migration of doxorubicin...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/26860283/imaging-guided-photoacoustic-drug-release-and-synergistic-chemo-photoacoustic-therapy-with-paclitaxel-containing-nanoparticles
#20
Junping Zhong, Sihua Yang, Liewei Wen, Da Xing
Here, a novel triggered drug release modality was developed for oncotherapy. Paclitaxel (PTX), perfluorohexane (PFH) and gold nanorods (AuNRs) loaded nanoparticles (PTX-PAnP) were synthesized. Folic acid (FA) conjugated PTX-PAnP (PTX-PAnP-FA) could be selectively taken into folate receptor-overexpressed tumor cells. Upon pulsed laser irradiation, the PTX-PAnP-FA could be rapidly destructed because of the PFH vaporization, resulting in fast drug release, which induced apoptosis of cancer cells efficiently. Stimulated fragmentation of the PTX-PAnP-FA nanoparticles can facilitate multiple mechanisms such as bubble implosion, shockwave generation, and sonoporation that further enhance the therapeutic efficiency...
March 28, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
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