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https://www.readbyqxmd.com/read/29677692/full-color-emitting-fluorescent-carbon-material-as-reversible-ph-sensor-with-multicolor-live-cell-imaging
#1
Vinay Sharma, Navpreet Kaur, Pranav Tiwari, Shaikh M Mobin
Carbon-based nano materials are developed as a cytocompatible alternative to semiconducting quantum dots for bioimaging and fluorescence-based sensing. The green alternatives for the synthesis of carbon materials are imminent. The present study demonstrates microwave based one step quick synthesis of fluorescent carbon material (FCM) having three variants: (i) un-doped fluorescent carbon material (UFCM) (ii) nitrogen doped FCM (N@FCM), and (iii) nitrogen & phosphorus co-doped FCM (N-P@FCM) using sugarcane extract as a carbon source...
April 11, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29677645/autophagy-as-a-cytoprotective-mechanism-in-esophageal-squamous-cell-carcinoma
#2
REVIEW
Timothy M Hall, Marie-Pier Tétreault, Kathryn E Hamilton, Kelly A Whelan
Esophageal squamous cell carcinoma (ESCC) is amongst the most aggressive human malignancies, representing a significant health burden worldwide. Autophagy is an evolutionarily conserved catabolic process that degrades and recycles damaged organelles and misfolded proteins to maintain cellular homeostasis. Alterations in autophagy are associated with cancer pathogenesis, including ESCC; however, the functional role of autophagy in ESCC remains elusive. Here, we discuss the clinical relevance of autophagy effectors in ESCC and review current knowledge regarding the molecular mechanisms through which autophagy contributes to ESCC...
April 17, 2018: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29677644/antimicrobial-activity-and-cytotoxicity-of-xanthoquinodin-analogs-from-the-fungus-cytospora-eugeniae-bcc42696
#3
Karoon Sadorn, Siriporn Saepua, Nattawut Boonyuen, Tanapong Boonruangprapa, Pranee Rachtawee, Pattama Pittayakhajonwut
Eleven previously undescribed compounds, including cytosporanthraxanthone, xanthoquinodins A7-A10, ketoxanthoquinodin A6, xanthoquinodins B6-B8, and spiroxanthoquinodins A and B, and one synthetically known compound, 2-methoxy pinselin, as well as ten known compounds, including xanthoquinodins A4-A6, B4, and B5, chrysophanol, physcion, (4S)-5-hydroxy-4-methoxy-α-tetralone, (4S)-4,8-dihydroxy-α-tetralone (or isosclerone), and gonytolide C were isolated from the fungus Cytospora eugeniae BCC42696. Their chemical structures were determined based on the analysis of NMR spectroscopic and mass spectrometric data...
April 17, 2018: Phytochemistry
https://www.readbyqxmd.com/read/29677642/diagnostic-value-of-18-f-fluordesoxyglucose-positron-emission-tomography-for-patients-with-brain-metastasis-from-unknown-primary-site
#4
Fabian Wolpert, Michael Weller, Anna Sophie Berghoff, Elisabeth Rushing, Lisa Michaela Füreder, Gregory Petyt, Henning Leske, Nicolaus Andratschke, Luca Regli, Marian Christoph Neidert, Roger Stupp, Rolf Stahel, Reinhard Dummer, Thomas Frauenfelder, Patrick Roth, Nicolas Reyns, Philipp Antonio Kaufmann, Matthias Preusser, Emilie Le Rhun
BACKGROUND: In 30% of patients with brain metastasis (BM), neurological symptoms are the first clinical manifestation of systemic malignancy, referred to as BM from cancer of unknown primary site (BM-CUPS). Here, we define the diagnostic value of 18 F-fluordesoxyglucose positron emission tomography (FDG-PET/CT) in the workup of BM-CUPS. METHODS: We screened 565 patients operated for BM at the University Hospital Zurich and identified 64 patients with BM-CUPS with data on both FDG-PET/CT and contrast-enhanced chest/abdomen computed tomography (CT) available at BM diagnosis...
April 17, 2018: European Journal of Cancer
https://www.readbyqxmd.com/read/29677641/a-randomised-controlled-trial-of-1-year-adjuvant-chemotherapy-with-oral-tegafur-uracil-versus-surgery-alone-in-stage-ii-colon-cancer-sacura-trial
#5
Chu Matsuda, Megumi Ishiguro, Satoshi Teramukai, Yoshiki Kajiwara, Shoichi Fujii, Yusuke Kinugasa, Yoshihiko Nakamoto, Masanori Kotake, Yoshiyuki Sakamoto, Kiyotaka Kurachi, Atsuyuki Maeda, Koji Komori, Naohiro Tomita, Yasuhiro Shimada, Keiichi Takahashi, Kenjiro Kotake, Masahiko Watanabe, Hidetaka Mochizuki, Yoko Nakagawa, Kenichi Sugihara
BACKGROUND: Efficacy of adjuvant chemotherapy in patients with stage II colon cancer is still controversial. The SACURA trial is a randomised-controlled study evaluating the superiority of 1-year adjuvant treatment with oral tegafur-uracil (UFT) to surgery alone for stage II colon cancer. METHODS: Patients were randomly assigned to the surgery-alone group or UFT group (UFT at 500-600 mg/day for 5 days, followed by 2-day rest, for 1 year). The primary end-point was disease-free survival (DFS)...
April 17, 2018: European Journal of Cancer
https://www.readbyqxmd.com/read/29677569/validation-of-the-ajcc-8th-prognostic-system-for-breast-cancer-in-an-asian-healthcare-setting
#6
R X Wong, F Y Wong, John Lim, W X Lian, Y S Yap
AIMS: We aim to validate the AJCC 8th edition prognostic staging system for breast cancer in an Asian setting. METHODS: Clinico-pathologic information and cancer-specific survival (CSS) outcomes of 6287 stage I to III patients with invasive breast cancer who underwent upfront surgery at SingHealth institutions in Singapore from 2006 to 2014 were analyzed. Survival distributions for the different staging systems were estimated by the Kaplan-Meier method and compared using the log-rank tests...
April 17, 2018: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29677568/validation-of-the-cps-eg-and-neo-bioscore-staging-systems-after-preoperative-systemic-therapy-for-breast-cancer-in-a-single-center-in-china
#7
Ling Xu, Xuening Duan, Bin Zhou, Yinhua Liu, Jingming Ye, Zhaorui Liu, Chao Ma, Hong Zhang, Shuang Zhang, Lanbo Zhang, Jianxin Zhao, Yuanjia Cheng
BACKGROUND: Prognostic assessment after preoperative systemic therapy (PST) plays a vital role in determining treatment in breast cancer patients. Many researchers have sought to develop a system to quantitate residual tumor and its correlation with prognosis after PST. This retrospective study validated the CPS + EG staging system and Neo-Bioscore in a single center in China. METHODS: Data from patients with non-metastatic primary breast cancer who were treated with PST and surgery from Jan...
April 17, 2018: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29677544/peptide-based-therapeutics-and-their-use-for-the-treatment-of-neurodegenerative-and-other-diseases
#8
REVIEW
Mohammad Hassan Baig, Khurshid Ahmad, Mohd Saeed, Ahmed M Alharbi, George E Barreto, Ghulam Md Ashraf, Inho Choi
Bioactive peptides are actively involved in different biological functions and importantly contribute to human health, and the use of peptides as therapeutics has a long successful history in disease management. A number of peptides have wide-ranging therapeutic effects, such as antioxidant, antimicrobial, and antithrombotic effects. Neurodegenerative diseases are typically caused by abnormal aggregations of proteins or peptides, and the depositions of these aggregates in or on neurons, disrupt signaling and eventually kill neurons...
April 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29677543/garcinia-morella-fruit-a-promising-source-of-antioxidant-and-anti-inflammatory-agents-induces-breast-cancer-cell-death-via-triggering-apoptotic-pathway
#9
Bhaswati Choudhury, Raghuram Kandimalla, R Elancheran, Rupjyoti Bharali, Jibon Kotoky
A rapid rise in cancer cases worldwide, especially breast cancer in females, instigates the need for more effective and less side effect causing drugs from natural origin. Thereby, in the present study, Garcinia morella fruit was investigated for antioxidant, anti-inflammatory and anti-breast cancer activity. Preliminary antioxidant and anticancer evaluation of different fractions and crude methanol extract of G. morella fruit suggested chloroform fraction as the bioactive fraction. Time course analysis (by 24 h, 48 h and 72 h) of the bioactive fraction (1...
April 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29677534/punicalagin-induces-senescent-growth-arrest-in-human-papillary-thyroid-carcinoma-bcpap-cells-via-nf-%C3%AE%C2%BAb-signaling-pathway
#10
Xian Cheng, Xin Yao, Shichen Xu, Jie Pan, Huixin Yu, Jiandong Bao, Haixia Guan, Rongrong Lu, Li Zhang
Papillary thyroid carcinoma (PTC) is the most common endocrine carcinoma. Our previous study revealed that punicalagin (PUN), an active component from pomegranate, triggered autophagic cell death and DNA damage response (DDR) in papillary thyroid carcinoma BCPAP cells. But the detailed anti-cancer mechanisms of punicalagin against PTC still remained to be further explored. DDR activation is a proven cause of cellular senescence, which mediates anti-tumor processes under certain circumstances. In this study, we reported that punicalagin treatment generated a senescent phenotype of BCPAP cells characterized as altered morphology, increased cell granularity and senescence-associated β-galactosidase (SA-β-Gal) staining...
April 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29677532/sulforaphane-promotes-apoptosis-and-inhibits-proliferation-and-self-renewal-of-nasopharyngeal-cancer-cells-by-targeting-stat-signal-through-mirna-124-3p
#11
Xiqing Li, Zunlan Zhao, Ming Li, Mingyue Liu, Andres Bahena, Yaping Zhang, Yuwei Zhang, Chetan Nambiar, Guangzhi Liu
Sulforaphane (SF) exhibits an anti-tumor effect in a variety of cancers, but little is known about its function in nasopharyngeal carcinoma. SF could decrease the expression of stem cell markers, β-catenin, Nanog, c-Myc, Oct3/4 and Sox2 in nasopharyngeal cancer cells (HONE1 and SUN1), and inhibit the formation of tumor spheres. Moreover, SF inhibits proliferation and induces apoptosis decreasing the stemness of nasopharyngeal cancer cells through a mechanism related to STAT3 signaling in vitro. We found that SF inhibits total STAT3 expression level and STAT3 phosphorylation (troy 704 and troy 705) by upregulation of miRNA-124-3p...
April 16, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29677525/insights-from-diversified-anti-angiogenic-models-role-of-%C3%AE-interferon-inducer-deae-dextran
#12
Anita K Bakrania, Bhavesh C Variya, Snehal S Patel
BACKGROUND: Angiogenesis, the physiological process involving growth of new blood vessels from preexisting vessels, is essential for organ growth and repair. However, the imbalance in angiogenesis contributes to copious pathologies including cancer. Preceding the development of anti-angiogenic or proangiogenic agents, its evaluation is equally imperative; hence, precise and adequate models required. Valid mammalian models are expensive, time-consuming and not easy to set up, instigating legal and ethical aspects making it necessary to establish models with satisfactory activity and limited drawbacks...
April 17, 2018: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29677520/stable-black-phosphorus-bi-2-o-3-heterostructures-for-synergistic-cancer-radiotherapy
#13
Hao Huang, Lizhen He, Wenhua Zhou, Guangbo Qu, Jiahong Wang, Na Yang, Jie Gao, Tianfeng Chen, Paul K Chu, Xue-Feng Yu
X-ray induced photodynamic therapy (X-ray-PDT) is a promising approach for synergistic cancer radiotherapy and development of suitable radiosensitizers is highly desired. In this paper, we propose black phosphorus/Bi2 O3 (BP/Bi2 O3 ) heterostructures as efficient and biocompatible radiosensitizers for synergistic cancer radiotherapy. The heterostructures are synthesized by growth of ultrasmall Bi2 O3 nanoparticles onto BP nanosheets. The Bi2 O3 decoration inhibits the rapid degradation of BP nanosheets by occupation of the defect sites, and the synergistic effects of BP and Bi2 O3 enable 1 O2 overproduction under X-ray irradiation...
April 13, 2018: Biomaterials
https://www.readbyqxmd.com/read/29677511/an-integrated-genome-wide-crispra-approach-to-functionalize-lncrnas-in-drug-resistance
#14
Assaf C Bester, Jonathan D Lee, Alejandro Chavez, Yu-Ru Lee, Daphna Nachmani, Suhani Vora, Joshua Victor, Martin Sauvageau, Emanuele Monteleone, John L Rinn, Paolo Provero, George M Church, John G Clohessy, Pier Paolo Pandolfi
Resistance to chemotherapy plays a significant role in cancer mortality. To identify genetic units affecting sensitivity to cytarabine, the mainstay of treatment for acute myeloid leukemia (AML), we developed a comprehensive and integrated genome-wide platform based on a dual protein-coding and non-coding integrated CRISPRa screening (DICaS). Putative resistance genes were initially identified using pharmacogenetic data from 760 human pan-cancer cell lines. Subsequently, genome scale functional characterization of both coding and long non-coding RNA (lncRNA) genes by CRISPR activation was performed...
April 19, 2018: Cell
https://www.readbyqxmd.com/read/29677503/revolutionizing-precision-oncology-through-collaborative-proteogenomics-and-data-sharing
#15
Henry Rodriguez, Stephen R Pennington
The integration of proteomics into precision oncology presents opportunities that may transform the molecular analysis of cancer and accelerate basic and clinical cancer research. This Commentary discusses the importance of international collaboration and data sharing inspired by the Cancer Moonshot to accelerate the progress of multi-omic precision medicine-an approach that addresses the global diversity of people and of cancers.
April 19, 2018: Cell
https://www.readbyqxmd.com/read/29677483/design-synthesis-and-biological-evaluation-of-pyrimidine-based-derivatives-as-vegfr-2-tyrosine-kinase-inhibitors
#16
Wuji Sun, Shengquan Hu, Shubiao Fang, Hong Yan
Vascular endothelial growth factor receptor-2 (VEGFR-2) plays a crucial role in tumor angiogenesis, and inhibition of the VEGFR-2 signaling pathway has already become an attractive approach for cancer therapy. In this study, a novel pyrimidine-based derivative 7j was designed as lead compound, and three series of potent VEGFR-2 inhibitors were synthesized and biologically evaluated against A549 and HepG2 cell lines. Compounds 7d, 9s and 13n exhibited superior inhibitory activities against A549 cell with IC50 ranged from 9...
April 13, 2018: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29677448/self-assembled-ph-responsive-polymeric-micelles-for-highly-efficient-non-cytotoxic-delivery-of-doxorubicin-chemotherapy-to-inhibit-macrophage-activation-in-vitro-investigation
#17
Zhi-Sheng Liao, Shan-You Huang, Jyun-Jie Huang, Jem-Kun Chen, Ai-Wei Lee, Juin-Yih Lai, Duu-Jong Lee, Chih-Chia Cheng
Self-assembled pH-responsive polymeric micelles, a combination of hydrophilic poly(ethylene glycol) segments and hydrogen bonding interactions within a biocompatible polyurethane substrate, can spontaneously self-assemble into highly controlled, nanosized micelles in aqueous solution. These newly-developed micelles exhibit excellent pH-responsive behavior and biocompatibility, highly controlled drug (doxorubicin; DOX) release behavior and high drug encapsulation stability in different aqueous environments, making the micelles highly attractive potential candidates for safer, more effective drug delivery in applications such as cancer chemotherapy...
April 20, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29677444/disassembly-of-hydrophobic-photosensitizer-by-bio-degradable-zeolitic-imidazolate-framework-8-for-photodynamic-cancer-therapy
#18
Dandan Xu, Yongqiang You, Fanyu Zeng, Yong Wang, Chunyan Liang, Huanhuan Feng, Xing Ma
Photodynamic therapy (PDT), an alternative to conventional cancer therapeutics, has gained increasingly attentions for its non-invasive advantages and simultaneously fluorescence imaging property. PDT is a tripartite process that functions in simultaneous presence of a photosensitizer (PS), light and available oxygen molecules. However, many highly efficient PSs are hydrophobic and easily self-aggregate in aqueous solution, leading to quickly quenching of PDT effect. Here we construct zeolitic imidazolate framework-8 (ZIF-8) containing water insoluble photosensitizer zinc(II) phthalocyanine (ZnPc), a typical hydrophobic PS, by one-step coprecipitation process, named as ZnPc@ZIF-8...
April 20, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29677439/nanoparticle-based-photo-triggered-cancer-immunotherapy-and-its-domino-effect-in-the-tumor-microenvironment
#19
Santhosh Kalash Rajendrakumar, Saji Uthaman, Chong Su Cho, In-Kyu Park
Immune system evasion by cancer cells is one of the hallmarks of cancers, and it occurs with the support of tumor-associated immune cells (TICs) in the tumor microenvironment that increase the growth and invasiveness of tumor cells. With recent advancements in the development of novel near infrared (NIR)-responsive nanoparticles, specifically eradicating TICs or inducing an inflammatory immune response by activating killer T cells has become possible. This review will discuss the mechanisms and applications of photo-triggered immunotherapy in detail...
April 20, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29677398/does-stress-increase-risk-of-breast-cancer-a-15-year-prospective-study
#20
Phyllis Butow, Melanie Price, Joseph Coll, Katherine Tucker, Bettina Meiser, Roger Milne, Judith Wilson, Louise Heiniger, Brandi Baylock, Tracey Bullen, Prue Weideman, Kelly-Anne Phillips
OBJECTIVE: The possible impact of stress on cancer incidence remains controversial. We prospectively evaluated associations between life event stressors, social support, personality characteristics (optimism, anger control, anti-emotionality) and risk of developing primary breast cancer (BCa), in women at increased familial risk of BCa. METHODS: A prospective cohort, repeated measures design was employed. Recruitment was through the Kathleen Cuningham Foundation Consortium for Research into Familial breast cancer (kConFab), which collects genetic, epidemiological and clinical data from Australasian families with multiple BCa cases...
April 20, 2018: Psycho-oncology
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