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Oncotherapy

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https://www.readbyqxmd.com/read/28911213/effects-of-oncotherapy-on-testicular-stem-cells-and-niche
#1
Deepa Bhartiya, Sandhya Anand
No abstract text is available yet for this article.
September 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28892360/in-vivo-imaging-guided-photothermal-photoacoustic-synergistic-therapy-with-bioorthogonal-metabolic-glycoengineering-activated-tumor-targeting-nanoparticles
#2
Lihua Du, Huan Qin, Teng Ma, Tao Zhang, Da Xing
Developing multifunctional phototheranostics with nanoplatforms offers promising potential for effective eradication of malignant solid tumors. In this study, we develop a multifunctional phototheranostic by combining photothermal therapy (PTT) and photoacoustic therapy (PAT) based on a tumor-targeting nanoagent (DBCO-ZnPc-LP). The nanoagent DBCO-ZnPc-LP was facilely prepared by self-assembling of a single lipophilic near-infrared (NIR) dye zinc(II)-phthalocyanine (ZnPc) with a lipid-poly(ethylene glycol) (LP) and following modified further with dibenzyl cyclootyne (DBCO) for introducing the two-step chemical tumor-targeting strategy based on metabolic glycoengineering and click chemistry...
September 13, 2017: ACS Nano
https://www.readbyqxmd.com/read/28872842/core-shell-shell-multifunctional-nanoplatform-for-intracellular-tumor-related-mrnas-imaging-and-near-infrared-light-triggered-photodynamic-photothermal-synergistic-therapy
#3
Yao Cen, Wen-Jing Deng, Yuan Yang, Ru-Qin Yu, Xia Chu
A multifunctional nanoplatform, which generally integrates biosensing, imaging diagnosis, and therapeutic functions into a single nanoconstruct, has great important significance for biomedicine and nanoscience. Here, we developed a core-shell-shell multifunctional polydopamine (PDA) modified upconversion nanoplatform for intracellular tumor-related mRNAs detection and near-infrared (NIR) light triggered photodynamic and photothermal synergistic therapy (PDT-PTT). The nanoplatform was constructed by loading a silica shell on the hydrophobic upconversion nanoparticles (UCNPs) with hydrophilic photosensitizer methylene blue (MB) entrapped in it, and then modifying PDA shells through an in situ self-polymerization process, thus yielding a core-shell-shell nanoconstruct UCNP@SiO2-MB@PDA...
September 13, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28847040/metabolic-effects-of-hedyotis-diffusa-on-rats-bearing-walker-256-tumor-revealed-by-nmr-based-metabolomics
#4
Zhiyong Wang, Kuo Gao, Can Xu, Jian Gao, Yujing Yan, Yingfeng Wang, Zhongfeng Li, Jianxin Chen
Hedyotis diffusa, a traditional Chinese herbal medicine, is widely used for oncotherapy and shows a positive effect in the clinical treatment. But its mechanism of anticancer activities is complicated and unclear. This study was undertaken to assess the therapeutic effects and reveal detailed mechanisms of H. diffusa for oncotherapy. A Walker 256 tumor-bearing rat model was established, and metabolomic profiles of plasma and urine were obtained from (1) H NMR technique. Multivariate statistical analysis methods were used to characterize the discriminating metabolites between control (C), Walker 256 tumor-bearing rats model (M), and H...
August 28, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/28826722/pd-1-pd-l1-and-immunotherapy-for-pancreatic-cancer
#5
Mengyu Feng, Guangbing Xiong, Zhe Cao, Gang Yang, Suli Zheng, Xujun Song, Lei You, Lianfang Zheng, Taiping Zhang, Yupei Zhao
Therapy that targets programmed death 1 or programmed death 1 ligand 1 (PD-1/PD-L1), which are known as immune checkpoints, has been recently rapidly developing as oncotherapy for various carcinomas. However, this therapy has a poor effect on the treatment of pancreatic cancer with PD-1/PD-L1 blockade monotherapy. In this review, the development and limitations of anti-PD-1/PD-L1 monotherapy in pancreatic cancer are discussed. We then consider the underlying mechanism of anti-PD-1/PD-L1 monotherapy failure, combination strategies overcoming resistance to anti-PD-1/PD-L1 immunotherapy and the prospect of targeting PD-1/PD-L1 for the immunotherapy of pancreatic cancer...
October 28, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28808999/studying-protein-protein-interactions-by-biotin-ap-tagged-pulldown-and-ltq-orbitrap-mass-spectrometry
#6
Zhongqiu Xie, Yuemeng Jia, Hui Li
The study of protein-protein interactions represents a key aspect of biological research. Identifying unknown protein binding partners using mass spectrometry (MS)-based proteomics has evolved into an indispensable strategy in drug discovery. The classic approach of immunoprecipitation with specific antibodies against the proteins of interest has limitations, such as the need for immunoprecipitation-qualified antibody. The biotin AP-tag pull-down system has the advantage of high specificity, ease of use, and no requirement for antibody...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28755641/a-visual-guide-to-gene-optothermal-synergy-therapy-nanosystem-using-tungsten-oxide
#7
Bin Zheng, Jingya Wang, Huizhuo Pan, Hongbin Chen, Wanying Ji, Zhenyu Liao, Xiaoqun Gong, Hanjie Wang, Jin Chang
Combination of gene therapy and photothermal therapy (PTT) has drawn much attention in cancer therapy in recent years. However, this joint treatment process lacks fluorescence imaging visualization guidance that limits its clinical applications in oncotherapy. Herein, we report the use of gene therapy and tungsten oxide (W18O49, WO) synthetized with template method for combined PTT of cancer. In this system, a novel nanoplatform, with Bax gene, WO and indocyanine green (ICG) loaded in mesoporous silica nanoparticle had been successfully constructed, which was used as the near-infrared imaging-guided gene/optothermal multi-modal oncotherapy...
November 15, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28739696/differences-in-extracellular-matrix-composition-and-its-role-in-invasion-in-primary-and-secondary-intracerebral-malignancies
#8
József Virga, Csaba Dávid Szemcsák, Judit Reményi-Puskár, Judit Tóth, Tibor Hortobágyi, Éva Csősz, Gábor Zahuczky, László Szivos, Lászlo Bognár, Almos Klekner
BACKGROUND/AIM: The most common malignant primary brain tumor is glioblastoma which infiltrates the peritumoral brain, while secondary brain metastases are well demarcated malignancies. Previous research has proved the pivotal role of the changes in the extracellular matrix (ECM) in cancer cell invasion. MATERIALS AND METHODS: The mRNA expression of 40 ECM molecules was determined using qRT-PCR in 54 fresh-frozen glioblastoma and brain metastasis samples. Seventy-two samples were used to determine the levels of 20 ECM proteins...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28654265/polyphenolic-phytochemicals-in-cancer-prevention-and-therapy-bioavailability-versus-bioefficacy
#9
Jose Maria Estrela, Salvador Mena, Elena Obrador, Maria Benlloch, Gloria Castellano, Rosario Salvador, Ryan W Dellinger
Natural polyphenols are organic chemicals which contain phenol units in their structures. They show anticancer properties. However, a key problem is their short half-life and low bioavailability under in vivo conditions. Still, definitively demonstrating the human benefits of isolated polyphenolic compounds (alone or in combination) using modern scientific methodology has proved challenging. The main discrepancy between experimental and clinical observations is the frequent use of non-physiologically relevant concentrations of polyphenols in mechanistic studies...
June 27, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28591750/mir-346-suppresses-cell-proliferation-through-smyd3-dependent-approach-in-hepatocellular-carcinoma
#10
Weiyou Zhu, Jing Qian, Ling Ma, Pei Ma, Fengming Yang, Yongqian Shu
BACKGROUND & AIMS: The miRNAs are demonstrated to be involved in the carcinogenesis of hepatocellular carcinoma (HCC) and some exhibit potential value for oncotherapy. This study was designed to explore the role of miR-346 in the pathogenesis of hepatocellular carcinoma. METHODS: High throughput screening was employed following with Real time-PCR to investigate the candidate miRNAs. 5-ethynyl-2-deoxyuridine (EdU) assay, CCK-8, transwell assay, cell cycle assay, luciferase reporter assay, western blot and mice xenotransplantation model were performed in the present study...
May 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28561650/higher-level-pathway-objectives-of-epigenetic-therapy-a-solution-to-the-p53-problem-in-cancer
#11
Vamsidhar Velcheti, Tomas Radivoyevitch, Yogen Saunthararajah
Searches for effective yet nontoxic oncotherapies are searches for exploitable differences between cancer and normal cells. In its core of cell division, cancer resembles normal life, coordinated by the master transcription factor MYC. Outside of this core, apoptosis and differentiation programs, which dominantly antagonize MYC to terminate cell division, necessarily differ between cancer and normal cells, as apoptosis is suppressed by biallelic inactivation of the master regulator of apoptosis, p53, or its cofactor p16/CDKN2A in approximately 80% of cancers...
2017: American Society of Clinical Oncology Educational Book
https://www.readbyqxmd.com/read/28448438/antiplatelet-activity-of-a-newly-synthesized-novel-ruthenium-ii-a-potential-role-for-akt-jnk-signaling
#12
Themmila Khamrang, Kuo-Chen Hung, Chih-Hsuan Hsia, Cheng-Ying Hsieh, Marappan Velusamy, Thanasekaran Jayakumar, Joen-Rong Sheu
In oncotherapy, ruthenium complexes are considered as potential alternatives for platinum compounds, and have been proved as promising anticancer drugs with high efficacy and lesser side effects. Platelet activation plays a major role in cancer metastasis and progression. Hence, this study explored the effect of a newly synthesized ruthenium complex, [Ru(η⁶-cymene)(L)Cl]BF₄(TQ5), where L = 4-phenyl-2-pyridin-2-yl-quinazoline), on human platelet activation. TQ5 (3-5 µM) inhibited concentration-dependent collagen-induced platelet aggregation in washed human platelets...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28420615/the-mechanism-and-clinical-significance-of-long-noncoding-rna-mediated-gene-expression-via-nuclear-architecture
#13
REVIEW
Jian Shi, Yan-ming Li, Xiang-dong Fang
Long noncoding RNAs (lncRNAs) are a class of non-protein coding transcripts exceeding 200 nucleotides in length. Accumulating evidence achieved by several sophisticated techniques such as chromatin conformation capture and RNA-seq has led to new questions concerning correlations between lncRNAs and chromatin structures. Many studies have revealed that lncRNAs exert great influences on gene expression through regulating chromatin 3D structures. In addition, lncRNAs play a crucial role in tumorigenesis and therefore hold great promises in disease diagnosis and prognosis...
March 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28391161/the-mvmp-p4-promoter-is-a-host-cell-type-range-determinant-in-vivo
#14
Chen Meir, Michal Mincberg, Irina Rostovsky, Saar Tal, Ellen M Vollmers, Adi Levi, Peter Tattersall, Claytus Davis
The protoparvovirus early promoters, e.g. P4 of Minute Virus of Mice (MVM), play a critical role during infection. Initial P4 activity depends on the host transcription machinery only. Since this is cell-type dependent, it is hypothesized that P4 is a host cell-type range determinant. Yet host range determinants have mapped mostly to capsid, never P4. Here we test the hypothesis using the mouse embryo as a model system. Disruption of the CRE element of P4 drastically decreased infection levels without altering range...
June 2017: Virology
https://www.readbyqxmd.com/read/28372823/defining-precision-the-precision-medicine-initiative-trials-nci-mpact-and-nci-match
#15
Geraldine O'Sullivan Coyne, Naoko Takebe, Alice P Chen
"Precision" trials, using rationally incorporated biomarker targets and molecularly selective anticancer agents, have become of great interest to both patients and their physicians. In the endeavor to test the cornerstone premise of precision oncotherapy, that is, determining if modulating a specific molecular aberration in a patient's tumor with a correspondingly specific therapeutic agent improves clinical outcomes, the design of clinical trials with embedded genomic characterization platforms which guide therapy are an increasing challenge...
May 2017: Current Problems in Cancer
https://www.readbyqxmd.com/read/28363756/her2-as-an-emerging-oncotarget-for-colorectal-cancer-treatment-after-failure-of-anti-epidermal-growth-factor-receptor-therapy
#16
REVIEW
Naoki Takegawa, Kimio Yonesaka
Amplification of the HER2 gene is an indicator of poor prognosis for several kinds of malignancies such as breast and gastric cancer, and anti-HER2 targeting therapies provide clinical benefits in these patients. In 2011, HER2 was identified as a resistance molecule for de novo and secondary anti-epidermal growth factor receptor (EGFR) antibody therapy. HER2 activation provides a bypass signaling pathway after anti-EGFR antibody treatment of colorectal cancer. Cell line-based screening revealed that HER2 genomic amplification induces resistance to the anti-EGFR antibody cetuximab in colorectal cancer...
March 9, 2017: Clinical Colorectal Cancer
https://www.readbyqxmd.com/read/28356010/the-emerging-roles-of-rassf5-in-human-malignancy
#17
Shuofeng Li, Jingwei Teng, Haiqing Li, Junnian Zheng, Feifei Chen
Ras association domain family member 5 (RASSF5, also named NORE1) is an identified member of the RASSF gene family which could bind selectively to activated Ras and func¬tion as an antineoplastic effector in multiple cellular regulations. While high expressed in majority of normal tissues, RASSF5 is epigenetically inactivated by promoter hypermethylation in numerous cancer cell lines and primary cancers, suggesting it as a potential tumor suppressor. Nevertheless, the physiologic significance of RASSF5 in tumorigenesis remains unclear...
March 27, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28347249/chemoresistance-is-associated-with-overexpression-of-hax-1-inhibition-of-which-resensitizes-drug-resistant-breast-cancer-cells-to-chemotherapy
#18
Ji Yang, Yue Wu, Xiao Wang, Liqian Xu, Xiaohong Zhao, Yunmei Yang
Acquired resistance to standard chemotherapy is the common and critical limitation for cancer therapy. Hematopoietic cell-specific protein 1-associated protein X-1 (HAX-1) has been reported to be upregulated in numerous cancers. However, the role of HAX-1 in oncotherapy remains unclear. In this study, we established MDA-MB-231 cell lines which were resistant to cisplatin (MDA-MB-231/CR) or doxorubicin (MDA-MB-231/DR) to study the chemoresistance in breast cancer. As a result, the HAX-1 which is an apoptosis-associated protein was observed to be overexpressed in both MDA-MB-231/CR and MDA-MB-231/DR compared with the routine MDA-MB-231 cells...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28248076/multifunctional-theranostic-agent-of-cu2-oh-po4-quantum-dots-for-photoacoustic-image-guided-photothermal-photodynamic-combination-cancer-therapy
#19
Wei Guo, Zhenyu Qiu, Chongshen Guo, Dandan Ding, Tianchan Li, Fei Wang, Jianzhe Sun, Nannan Zheng, Shaoqin Liu
Image-guided phototherapy is considered to be a prospective technique for cancer treatment because it can provide both oncotherapy and bioimaging, thus achieving an optimized therapeutic efficacy and higher treatment accuracy. Compared to complicated systems with multiple components, using a single material for this multifunctional purpose is preferable. In this work, we strategically fabricated poly(acrylic acid)- (PAA-) coated Cu2(OH)PO4 quantum dots [denoted as Cu2(OH)PO4@PAA QDs], which exhibit a strong near-infrared photoabsorption ability...
March 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28101733/3d-absorbed-dose-distribution-estimated-by-monte-carlo-simulation-in-radionuclide-therapy-with-a-monoclonal-antibody-targeting-synovial-sarcoma
#20
David Sarrut, Jean-Noël Badel, Adrien Halty, Gwenaelle Garin, David Perol, Philippe Cassier, Jean-Yves Blay, David Kryza, Anne-Laure Giraudet
BACKROUND: Radiolabeled OTSA101, a monoclonal antibody targeting synovial sarcoma (SS) developed by OncoTherapy Science, was used to treat relapsing SS metastases following a theranostic procedure: in case of significant (111)In-OTSA101 tumor uptake and favorable biodistribution, patient was randomly treated with 370/1110 MBq (90)Y-OTSA101. Monte Carlo-based 3D dosimetry integrating time-activity curves in VOI was performed on (111)In-OTSA101 repeated SPECT/CT. Estimated absorbed doses (AD) in normal tissues were compared to biological side effects and to the admitted maximal tolerated absorbed dose (MTD) in normal organs...
December 2017: EJNMMI Physics
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