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https://www.readbyqxmd.com/read/30309504/tumor-targeting-salmonella-typhimurium-a1-r-overcomes-partial-carboplatinum-resistance-of-a-cancer-of-unknown-primary-cup
#1
Kentaro Miyake, Tasuku Kiyuna, Masuyo Miyake, Ming Zhao, Sintawat Wangsiricharoen, Kei Kawaguchi, Zhiying Zhang, Takashi Higuchi, Sahar Razmjooei, Yunfeng Li, Scott D Nelson, Tara Russell, Arun Singh, Takashi Murakami, Yukihiko Hiroshima, Masashi Momiyama, Ryusei Matsuyama, Takashi Chishima, Shree Ram Singh, Sant P Chawla, Fritz C Eilber, Itaru Endo, Robert M Hoffman
Cancer of unknown primary (CUP) is metastatic disease without a known primary and therefore very difficult to identify effective therapy. Previously, we demonstrated partial efficacy of Salmonella typhimurium A1-R (S. typhimurium A1-R) alone and carboplatinum alone (CAR) on a CUP patient tumor in the patient-derived xenograft (PDOX) model. The aim of the present study was to investigate the efficacy of S. typhimurium A1-R combined with CAR on the CUP PDOX model. The CUP tumors were implanted orthotopically into the left supraclavicular fossa of nude mice to match the site from which they were resected from the patient...
October 2018: Tissue & Cell
https://www.readbyqxmd.com/read/30302344/cancer-immunotherapy-priming-the-host-immune-response-with-live-attenuated-salmonella-enterica
#2
REVIEW
Marco Antonio Hernández-Luna, Rosendo Luria-Pérez
In recent years, cancer immunotherapy has undergone great advances because of our understanding of the immune response and the mechanisms through which tumor cells evade it. A century after the first immunotherapy attempt based on bacterial products described by William Coley, the use of live attenuated bacterial vectors has become a promising alternative in the fight against cancer. This review describes the role of live attenuated Salmonella enterica as an oncolytic and immunotherapeutic agent, due to its high affinity for tumor tissue and its ability to activate innate and adaptive antitumor immune response...
2018: Journal of Immunology Research
https://www.readbyqxmd.com/read/30292796/shedding-light-on-microrna-function-via-microscopy-based-screening
#3
REVIEW
Ines Rodrigues Lopes, Ricardo Jorge Silva, Ines Caramelo, Ana Eulalio, Miguel Mano
MicroRNAs (miRNAs) are small non-coding RNAs that post-transcriptionally modulate gene expression and orchestrate a wide range of biological and pathological processes. The use of high-throughput screening technologies, in particular microscopy-based screenings (also known as high-content screenings), coupled with genome-wide libraries for modulation of miRNA levels, allow for comprehensive functional analysis of each member of the miRNome in different phenotypic cell-based assays. The wealth of information obtained from such screenings spans across various fields of research, including cancer, cardiovascular, cell reprogramming, and infection biology...
October 5, 2018: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/30292411/a-combination-of-irinotecan-cisplatinum-and-irinotecan-temozolomide-or-tumor-targeting-salmonella-typhimurium-a1-r-arrest-doxorubicin-and-temozolomide-resistant-myxofibrosarcoma-in-a-pdox-mouse-model
#4
Tasuku Kiyuna, Yasunori Tome, Takashi Murakami, Kentaro Miyake, Kentaro Igarashi, Kei Kawaguchi, Hiromichi Oshiro, Takashi Higuchi, Masuyo Miyake, Norihiko Sugisawa, Zhiying Zhang, Sahar Razmjooei, Sintawat Wangsiricharoen, Bartosz Chmielowski, Scott D Nelson, Tara A Russell, Sarah M Dry, Yunfeng Li, Mark A Eckardt, Arun S Singh, Sant Chawla, Fuminori Kanaya, Fritz C Eilber, Shree Ram Singh, Ming Zhao, Robert M Hoffman
Myxofibrosarcoma (MFS) is the most common sarcomas in elderly patients and is either chemo-resistant or recurs with metastasis after chemotherapy. This recalcitrant cancer in need of improved treatment. We have established a patient-derived orthotopic xenograft (PDOX) of MFS. The MFS PDOX model was established in the biceps femoris of nude mice and randomized into 7 groups of 7 mice each: control; doxorubicin (DOX); pazopanib (PAZ); temozolomide (TEM); Irinotecan (IRN); IRN combined with TEM; IRN combined with cisplatinum (CDDP) and Salmonella typhimurium A1-R (S...
October 3, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/30288618/antimicrobial-and-cytotoxicity-effects-of-synthesized-silver-nanoparticles-from-punica-granatum-peel-extract
#5
Sandhanasamy Devanesan, Mohamad S AlSalhi, Radhakrishnan Vishnu Balaji, Amirtham Jacob A Ranjitsingh, Anis Ahamed, Akram A Alfuraydi, Fulwah Y AlQahtani, Fadilah S Aleanizy, Ahmed H Othman
To address the growing challenges from drug-resistant microbes and tumor incidence, approaches are being undertaken to phytosynthesize metal nanoparticles, particularly silver nanoparticles, to get remedial measure. In this study, an attempt has been made to utilize a major biowaste product, pomegranate fruit peel (Punica granatum), to synthesize silver nanoparticles. The silver nanoparticles (AgNPs) were synthesized using the aqueous extract of pomegranate peel. The formation of synthesized AgNPs was confirmed through UV-Vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX) as well as through the change of the colorless aqueous solution to a dark brown solution...
October 4, 2018: Nanoscale Research Letters
https://www.readbyqxmd.com/read/30257571/evaluation-of-genotoxic-potential-of-tert-butylquinone-and-its-derivatives-in-prokaryotic-and-eukaryotic-test-models
#6
Jelena Đorđević, Stoimir Kolarević, Jovana Jovanović, Jovana Kostić-Vuković, Irena Novaković, Marko Jeremić, Dušan Sladić, Branka Vuković-Gačić
Tert-butylquinone (TBQ) and its alkylamino and aralkylamino derivatives are of high interest as a potential antitumor agent. Therefore, it was necessary to investigate if the compounds exert undesirable activities such as interaction with DNA molecule which could result in negative side effects in the case of their use in the diseases treatment. The major aim of this study was to investigate genotoxic potential of TBQ and selected derivatives in an acellular model by using plasmid DNA, in the prokaryotic model by the SOS/umuC assay in Salmonella typhimurium TA1535/pSK1002 and in eukaryotic models by using comet assay in human fetal lung cell line (MRC-5) and human liver cancer cell line (HepG2)...
September 27, 2018: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/30229553/a-geneticist-s-view-of-prostate-cancer-prostate-cancer-treatment-considerations
#7
Abraham Eisenstark
Prostate cancer remains a life-threatening disease of men. While early detection has been helpful to reduce the mortality rate, we currently do not have a desired therapy. In recent years, new strategies have been proposed to treat prostate cancers with poor prognosis by utilizing genetically modified bacteria, including Salmonella typhimurium that preferentially replicate within solid tumors (1000:1 and up to 10,000:1 compared to non-cancerous tissue) destroying cancer cells without causing septic shock that is typically associated with wild-type S...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/30166607/chemo-immunotherapy-of-colon-cancer-with-focused-ultrasound-and-salmonella-laden-temperature-sensitive-liposomes-thermobots
#8
Kalyani Ektate, Maria Cristina Munteanu, Harshini Ashar, Jerry Malayer, Ashish Ranjan
Using attenuated Salmonella that efficiently homes in solid tumors, here we developed thermobots that actively transported membrane attached low-temperature sensitive liposome (LTSL) inside colon cancer cells for triggered doxorubicin release and simultaneous polarized macrophages to M1 phenotype with high intensity focused ultrasound (HIFU) heating (40-42 °C). Biocompatibility studies showed that the synthesized thermobots were highly efficient in LTSL loading without impacting its viability. Thermobots demonstrated efficient intracellular trafficking, high nuclear localization of doxorubicin, and induced pro-inflammatory cytokine expression in colon cancer cells in vitro...
August 30, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30166061/combination-therapy-of-tumor-targeting-salmonella-typhimurium-a1-r-and-oral-recombinant-methioninase-regresses-a-braf-v600e-negative-melanoma
#9
Kei Kawaguchi, Takashi Higuchi, Shukuan Li, Qinghong Han, Yuying Tan, Kentaro Igarashi, Ming Zhao, Kentaro Miyake, Tasuku Kiyuna, Masuyo Miyake, Hiromichi Ohshiro, Norihiko Sugisawa, Zhiying Zhang, Sahar Razmjooei, Sintawat Wangsiricharoen, Bartosz Chmielowski, Scott D Nelson, Tara A Russell, Sarah M Dry, Yunfeng Li, Mark A Eckardt, Arun S Singh, Shree Ram Singh, Fritz C Eilber, Michiaki Unno, Robert M Hoffman
Melanoma is a recalcitrant cancer. To improve and individualize treatment for this disease, we previously developed a patient-derived orthotopic xenograft (PDOX) model for melanoma. We previously reported the individual efficacy of tumor-targeting Salmonella typhimurium A1-R (S. typhimurium A1-R) and recombinant methioninase (rMETase) for melanoma in the PDOX models of this disease. In the present study, we evaluated the efficacy of the combination of S. typhimurium A1-R with orally-administered rMETase (o-rMETase) for BRAF-V600E-negative melanoma in a PDOX model...
September 18, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/30101384/benzoxazole-derivatives-design-synthesis-and-biological-evaluation
#10
Saloni Kakkar, Sumit Tahlan, Siong Meng Lim, Kalavathy Ramasamy, Vasudevan Mani, Syed Adnan Ali Shah, Balasubramanian Narasimhan
BACKGROUND: A new series of benzoxazole analogues was synthesized and checked for their in vitro antibacterial, antifungal and anticancer activities. RESULTS AND DISCUSSION: The synthesized benzoxazole compounds were confirmed by IR, 1 H/13 C-NMR, mass and screened for their in vitro antimicrobial activity against Gram-positive bacterium: Bacillus subtilis, four Gram-negative bacteria: Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Salmonella typhi and two fungal strains: Candida albicans and Aspergillus niger using tube dilution technique and minimum inhibitory concentration (MIC) was noted in µM and compared to ofloxacin and fluconazole...
August 12, 2018: Chemistry Central Journal
https://www.readbyqxmd.com/read/30100607/increasing-the-bactofection-capacity-of-a-mammalian-expression-vector-by-removal-of-the-f1-ori
#11
Síle A Johnson, Michael J Ormsby, Anne McIntosh, Stephen W G Tait, Karen Blyth, Daniel M Wall
Bacterial-mediated cancer therapy has shown great promise in in vivo tumour models with increased survival rates post-bacterial treatment. Improving efficiency of bacterial-mediated tumour regression has focused on controlling and exacerbating bacterial cytotoxicity towards tumours. One mechanism that has been used to carry this out is the process of bactofection where post-invasion, bacteria deliver plasmid-borne mammalian genes into target cells for expression. Here we utilised the cancer-targeting Salmonella Typhimurium strain, SL7207, to carry out bactofection into triple negative breast cancer MDA-MB-231 cells...
August 13, 2018: Cancer Gene Therapy
https://www.readbyqxmd.com/read/30084095/clostridium-difficile-the-difficult-kloster-fuelled-by-antibiotics
#12
REVIEW
Leon M T Dicks, Lasse S Mikkelsen, Erik Brandsborg, Harold Marcotte
Clostridium difficile is normally present in low numbers in a healthy adult gastro-intestinal tract (GIT). Drastic changes in the microbial population, e.g., dysbiosis caused by extensive treatment with antibiotics, stimulates the growth of resistant strains and the onset of C. difficile infection (CDI). Symptoms of infection varies from mild diarrhea to colitis (associated with dehydration and bleeding), pseudomembranous colitis with yellow ulcerations in the mucosa of the colon, to fulminant colitis (perforation of the gut membrane), and multiple organ failure...
August 6, 2018: Current Microbiology
https://www.readbyqxmd.com/read/30053493/benzo-a-pyrene-attenuates-the-pattern-recognition-receptor-induced-proinflammatory-phenotype-of-murine-macrophages-by-inducing-il-10-expression-in-an-aryl-hydrocarbon-receptor-dependent-manner
#13
Christiane Fueldner, Janine Kohlschmidt, Sina Riemschneider, Felix Schulze, Katharina Zoldan, Charlotte Esser, Sunna Hauschildt, Jörg Lehmann
Polycyclic aromatic hydrocarbons such as benzo(a)pyrene (BaP) are environmental contaminants known to be immunosuppressive. Most effects of BaP towards immune cells are thought to be mediated through activation of the aryl hydrocarbon receptor (AhR). The AhR is a ligand-activated transcription factor, which plays a critical modulatory role in various cells during immune response. Macrophages are key players in innate immunity against intracellular bacteria and are discussed to be a target of AhR-mediated immune regulation...
November 1, 2018: Toxicology
https://www.readbyqxmd.com/read/30033415/antibacterial-assay-and-reversion-of-carbon-tetrachloride-induced-liver-damage-on-wistar-mice-by-vernonia-amygdalina-delile
#14
Nwinyi Obinna Chukwuemeka, Smith Oluwakemi Oyebisi, Olugbuyiro Joseph Adebisi Oluwadare, Rotimi Solomon Oladapo, Njobeh Patrick Berka
In this study Vernonia amygdalina. Delile stem and leaves were evaluated for anti-cancer and antibacterial actions against selected microorganisms. The crude plant extracts were extracted using methanol and fractionated into ethyl acetate, hexane, aqueous and crude extracts. Cancer inducing agent Carbon tetrachloride (CCl4) was introduced into Wistar mice and screened with crude extracts of Vernonia amygdalina. Delile to evaluate the anti-cancer properties of the extracts. The effect of CCl4 in mice was determined by isolating and quantifying damaged DNA fragments in liver and blood using DNA zol BD and diphenylamine (DPA)...
July 2018: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/30023799/mechanistic-insight-into-size-dependent-enhanced-cytotoxicity-of-industrial-antibacterial-titanium-oxide-nanoparticles-on-colon-cells-because-of-reactive-oxygen-species-quenching-and-neutral-lipid-alteration
#15
Suresh K Verma, Ealisha Jha, Pritam Kumar Panda, Arun Thirumurugan, S K S Parashar, Shubhransu Patro, Mrutyunjay Suar
This study evaluates the impact of industrially prepared TiO2 nanoparticles on the biological system by using an in vitro model of colon cancer cell lines (HCT116). Industrial synthesis of titanium oxide nanoparticles was mimicked on the lab scale by the high-energy ball milling method by milling bulk titanium oxide particles for 5, 10, and 15 h in an ambient environment. The physiochemical characterization by field emission scanning electron microscopy, dynamic light scattering, and UV-visible spectroscopy revealed alteration in the size and surface charge with respect to increase in the milling time...
January 31, 2018: ACS Omega
https://www.readbyqxmd.com/read/30018975/-in-vivo-study-of-the-effects-of-er-%C3%AE-on-apoptosis-and-proliferation-of-hormone-independent-prostate-cancer-cell-lines-pc-3m
#16
Changli Zhou, Chunyu Yu, Lirong Guo, Xige Wang, Huimin Li, Qinqin Cao, Feng Li
Objective: To evaluate the in vivo therapeutic effects of attenuated Salmonella carrying PCDNA3.1-ER β plasmid in hormone-independent prostatic cancer in nude mice and to clarify the mechanism by which estrogen receptor β (ER β ) induces apoptosis and proliferation in prostatic cancer cells in mice. Methods: The orthotopic prostatic cancer models of mice were randomly divided as follows: MOCK group, treated with PBS, PQ group, treated with attenuated Salmonella alone, PQ-PCDNA3...
2018: BioMed Research International
https://www.readbyqxmd.com/read/30016386/therapeutic-advantage-of-genetically-engineered-salmonella-typhimurium-carrying-short-hairpin-rna-against-inhibin-alpha-subunit-in-cancer-treatment
#17
W Yoon, Y Yoo, Y S Chae, S-H Kee, B M Kim
Background: In contrast to its well-known endocrine function, the role of inhibin in cancer development and therapeutic response is unclear. Salmonella, particularly less toxic attenuated Salmonella strains, are used to treat cancer in two ways. First, Salmonella accumulate around tumors, penetrate the cell barrier, and replicate inside the tumors. Second, Salmonella can act as a vehicle for delivering anti-cancer agents or pro-apoptotic genes to attack tumors. In this study, we aimed to develop a suitable cancer therapeutic strategy by genetically modifying attenuated Salmonella typhimurium to harbor short hairpin RNA (shRNA) expression plasmids targeting alpha subunit of inhibin (sh-INHA)...
July 17, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29992102/biosynthesis-characterization-and-evaluation-of-bioactivities-of-leaf-extract-mediated-biocompatible-gold-nanoparticles-from-alternanthera-bettzickiana
#18
Nagalingam M, Kalpana V N, Devi Rajeswari V, Panneerselvam A
The objective of the study was to synthesize gold nanoparticles (Au NPs) using leaf extract of Alternanthera bettzickiana (A. bettzickiana ). The biosynthesized Au NPs were characterized using UV-vis spectroscopy, X-ray Diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Energy dispersive X-ray analysis (EDX), Zeta potential and Transmission electron microscopy (TEM). Morphologically, the Au NPs showed spherical shaped structures. Size distribution of Au NPs calculated using Scherrer's formula, showed an average size of 80-120 nm...
September 2018: Biotechnology Reports
https://www.readbyqxmd.com/read/29970062/10-hydroxy-2-decenoic-acid-of-royal-jelly-exhibits-bactericide-and-anti-inflammatory-activity-in-human-colon-cancer-cells
#19
Yuan-Chang Yang, Wing-Ming Chou, Debora Arny Widowati, I-Ping Lin, Chi-Chung Peng
BACKGROUND: Royal jelly (RJ), the exclusive food for the larva of queen honeybee, is regarded as the novel supplement to promote human health. The function of RJ may be attributed to its major and unique fatty acid, 10-hydroxy-2-decenoic acid (10-HDA). The current study investigated the anti-inflammory function of 10-HDA on human colon cancer cells, WiDr, as well as its effect on the growth of pathogenic bacterium. METHODS: The pro-inflammatory cytokines, receptor antagonist cytokine (IL-1ra) and nuclear factor-kappa B (NF-κB) in WiDr cells was analyzed by Enzyme-linked immunosorbent assay (ELISA) or western blot...
July 3, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29964313/cyp450-mediated-mitochondrial-ros-production-involved-in-arecoline-n-oxide-induced-oxidative-damage-in-liver-cell-lines
#20
Tsu-Shing Wang, Cheng-Ping Lin, Yu-Pong Chen, Mu-Rong Chao, Chien-Chun Li, Kai-Li Liu
BACKGROUND: IARC has classified the betel nut as a human environmental carcinogen. Previous studies have found that arecoline (AR) is the major alkaloid present in the saliva of betel quid chewers. Saliva contains a large content of AR which has been further shown to cause mutation of oral mucosa cells, resulting in oral cancer. Whereas, to date, there are only few studies reported the hepatotoxicity associated with arecoline and betel nut chewing. Therefore, the main purpose of this study was to determine the toxic effects of AR and its oxidative metabolite, arecoline N-oxide (ARNO), in normal liver cell lines...
October 2018: Environmental Toxicology
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