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https://www.readbyqxmd.com/read/28636835/use-of-bacteriophages-to-control-escherichia-coli-o157-h7-in-domestic-ruminants-meat-products-and-fruits-and-vegetables
#1
Lili Wang, Kunli Qu, Xiaoyu Li, Zhenhui Cao, Xitao Wang, Zhen Li, Yaxiong Song, Yongping Xu
Escherichia coli O157:H7 is an important foodborne pathogen that causes severe bloody diarrhea, hemorrhagic colitis, and hemolytic uremic syndrome. Ruminant manure is a primary source of E. coli O157:H7 contaminating the environment and food sources. Therefore, effective interventions targeted at reducing the prevalence of fecal excretion of E. coli O157:H7 by cattle and sheep and the elimination of E. coli O157:H7 contamination of meat products as well as fruits and vegetables are required. Bacteriophages offer the prospect of sustainable alternative approaches against bacterial pathogens with the flexibility of being applied therapeutically or for biological control purposes...
June 21, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28635259/a-delivery-system-targeting-haemagglutinin-of-influenza-virus-a-to-facilitate-antisense-based-anti-h1n1-therapy
#2
Xiaoran Ding, Jing Yang, Dandan Lu, Qingjun Li, Zhaoyan Zhang, Zhe Zhou, Shengqi Wang
Antisense oligonucleotides (ODNs) are therapeutic molecules that hybridize to complementary target mRNA sequences. To further overcome the poor cellular uptake of ODNs, we proposed a novel strategy to deliver ODNs by conjugating the anti-influenza A virus (IAV) ODN with a peptide showing high affinity to the haemagglutinin (HA) on the surface of IAV particles or the IAV infected host cells. The HA-specific binding peptides were selected by phage display and the individual binding clones are characterized by DNA sequencing, and the selected phage was further assayed by ELISA...
June 21, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28634746/screening-and-identification-of-a-specific-peptide-binding-to-cervical-cancer-cells-from-a-phage-displayed-peptide-library
#3
Chunyan Li, Ning Gao, Qinqin Xue, Ni Ma, Yuqin Hu, Jianfang Zhang, Biliang Chen, Yingchun Hou
OBJECTIVES: To screen and identify the probe markers specifically binding to human cervical cancer, a phage-displayed 12-mer peptide library was used for biopanning of SiHa cells. RESULTS: After four rounds of whole-cell subtraction biopanning, the phage recovery was 21-fold higher (from 3.9 × 10(-5) to 8.3 × 10(-4)) than that of the first round, and specific phage clones were significantly enriched. 57 randomly selected phage clones were tested by ELISA, and 36 phage clones were identified as positive clones...
June 20, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28613272/phage-phagocyte-interactions-and-their-implications-for-phage-application-as-therapeutics
#4
REVIEW
Ewa Jończyk-Matysiak, Beata Weber-Dąbrowska, Barbara Owczarek, Ryszard Międzybrodzki, Marzanna Łusiak-Szelchowska, Norbert Łodej, Andrzej Górski
Phagocytes are the main component of innate immunity. They remove pathogens and particles from organisms using their bactericidal tools in the form of both reactive oxygen species and degrading enzymes-contained in granules-that are potentially toxic proteins. Therefore, it is important to investigate the possible interactions between phages and immune cells and avoid any phage side effects on them. Recent progress in knowledge concerning the influence of phages on phagocytes is also important as such interactions may shape the immune response...
June 14, 2017: Viruses
https://www.readbyqxmd.com/read/28612636/phage-therapy-for-the-treatment-of-human-intestinal-bacterial-infections-soon-to-be-a-reality
#5
Harald Brüssow
No abstract text is available yet for this article.
June 19, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28611755/efficacy-of-phage-therapy-in-controlling-rabbit-colibacillosis-and-changes-in-cecal-microbiota
#6
Jian Zhao, Yan Liu, Chenwen Xiao, Shaojie He, Huochun Yao, Guolian Bao
Phage therapy is a valid weapon that we could use to fight against pathogens. Bacteriophages kill bacteria and self-proliferate in the digestive tract. Furthermore, it was assumed that phage therapy could preserve the existing gut microbiota. In this study, 45 rabbits were equally divided into three groups after they were orally inoculated with pathogenic Escherichia coli to induce gut infection. Each group was treated with bacteriophage ZRP1 (Group P), ciprofloxacin lactate (Group A), or phosphate-buffered solution (PBS) (Group N)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28611631/successful-treatment-of-chronic-staphylococcus-aureus-related-dermatoses-with-the-topical-endolysin-staphefekt-sa-100-a-report-of-3-cases
#7
Joan E E Totté, Martijn B van Doorn, Suzanne G M A Pasmans
Staphylococcus aureus plays an important role in skin and soft tissue infections and contributes to the pathophysiology of complex skin disorders such as atopic dermatitis. Bacterial resistance against commonly used antibiotics has increased considerably in the last decades demanding alternative treatment approaches. We present 3 cases where patients with chronic and recurrent S. aureus-related dermatoses were successfully treated with Staphefekt SA.100. Staphefekt SA.100 is a recombinant phage endolysin for topical skin application that specifically targets both methicillin-sensitive and methicillin-resistant S...
May 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/28599144/making-serine-integrases-work-for-us
#8
REVIEW
W Marshall Stark
DNA site-specific recombinases are enzymes (often associated with mobile DNA elements) that catalyse breaking and rejoining of DNA strands at specific points, thereby bringing about precise genetic rearrangements. Serine integrases are a group of recombinases derived from bacteriophages. Their unusual properties, including directionality of recombination and simple site requirements, are leading to their development as efficient, versatile tools for applications in experimental biology, biotechnology, synthetic biology and gene therapy...
June 6, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28596941/highly-specific-and-effective-targeting-of-egfrviii-positive-tumors-with-tandab-antibodies
#9
Kristina Ellwanger, Uwe Reusch, Ivica Fucek, Stefan Knackmuss, Michael Weichel, Thorsten Gantke, Vera Molkenthin, Eugene A Zhukovsky, Michael Tesar, Martin Treder
To harness the cytotoxic capacity of immune cells for the treatment of solid tumors, we developed tetravalent, bispecific tandem diabody (TandAb) antibodies that recognize EGFRvIII, the deletion variant III of the epidermal growth factor receptor (EGFR), and CD3 on T-cells, thereby directing immune cells to eliminate EGFRvIII-positive tumor cells. Using phage display, we identified scFv antibodies selectively binding to EGFRvIII. These highly EGFRvIII-specific, fully human scFv were substantially improved by affinity maturation, achieving KDs in the picomolar range, and were used to construct a set of bispecific EGFRvIII-targeting TandAbs with a broad range of binding and cytotoxic properties...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28586008/a-nanobody-targeting-carcinoembryonic-antigen-as-a-promising-molecular-probe-for-non-small-cell-lung-cancer
#10
Hao Wang, Ai-Min Meng, Sheng-Hua Li, Xiao-Liang Zhou
Carcinoembryonic antigen (CEA) is a biomarker and therapy target for non‑small cell lung cancer (NSCLC), which is the most common type of lung cancer. Nanobodies with high target specificity are promising candidates to function as anti‑CEA probes. In the present study, the targeting effects of an anti‑CEA nanobody obtained from phage display were investigated using technetium‑99 m (99mTc) and fluorescence labeling. In vitro binding and immunofluorescent staining assays, as well as in vivo blood clearance and biodistribution assays were performed...
July 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28578326/targeting-jurkat-t-lymphocyte-leukemia-cells-by-an-engineered-interferon-alpha-hybrid-molecule
#11
Dehai Yu, Zhonghua Du, Wei Li, Huaqiu Chen, Songgen Ye, Andrew R Hoffman, Jiuwei Cui, Ji-Fan Hu
BACKGROUND/AIMS: Adult T-cell leukemia/lymphoma (ATL) is a very aggressive T cell malignancy that carries a poor prognosis, primarily due to its resistance to chemotherapy and to life-threatening infectious complications. Interferon-alpha (IFNα) has been used in combination with the anti-retroviral drug zidovudine to treat patients with ATL. However, the efficacy of long-term therapy is significantly limited due to the systemic toxicity of IFNα. METHODS: We utilized phage display library screening to identify short peptides that specifically bind to Jurkat T lymphocyte leukemia cells...
June 5, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28572305/genome-sequence-of-escherichia-coli-e28-a-multidrug-resistant-strain-isolated-from-a-chicken-carcass-and-its-spontaneously-inducible-prophage
#12
Imke Schmidt, Thomas Riedel, Isabel Schober, Boyke Bunk, Cathrin Spröer, Anna Bierbrodt, Hansjörg Lehnherr, Johannes Wittmann
In this study, we sequenced the complete genome of the multidrug-resistant Escherichia coli strain E28, which was used as an indicator strain for phage therapy in vivo We used a combination of single-molecule real-time and Illumina sequencing technology to reveal the presence of a spontaneously inducible prophage.
June 1, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28548103/an-aavp-based-solid-phase-transducing-matrix-for-transgene-delivery-potential-for-translational-applications
#13
T L Smith, G R Souza, R L Sidman, W Arap, R Pasqualini
A hybrid vector of adeno-associated virus and phage (termed AAVP) has been introduced as a platform for systemic ligand-directed delivery of transgenes to tumors over the past decade. A series of studies have evaluated the AAVP platform for potential theranostic or purely therapeutic applications in several tumor models. Sufficient ligand-directed tumor targeting consistently resulted in specific molecular-genetic imaging and/or anti-tumor responses to 'suicide' transgene delivery. However, efforts to optimize transduction efficiency are still ongoing...
May 26, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28546472/complete-genome-sequence-of-lytic-bacteriophage-vpusm-8-against-o1-el-tor-inaba-vibrio-cholerae
#14
Ali Al-Fendi, Rafidah Hanim Shueb, Phiaw Chong Foo, Manickam Ravichandran, Chan Yean Yean
The complete genome sequence of bacteriophage VPUSM 8 against O1 El Tor Inaba Vibrio cholerae is reported here. The isolated VPUSM 8 has potential use in future phage therapy or as a biocontrol agent for the prevention and treatment of cholera.
May 25, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28544932/vascular-homing-peptides-for-cancer-therapy
#15
REVIEW
Lan Lu, Huan Qi, Jie Zhu, Wen Xia Sun, Bin Zhang, Chun Yan Tang, Qiang Cheng
In the past 30 years, a variety of phage libraries have been extensively utilized to identify and develop tumor homing peptides (THPs). THPs specifically bind to tumor cells or elements of the tumor microenvironment while no or low affinity to normal cells. In this regard, the efficacy of therapeutic agents in cancer therapy can be enhanced by targeting strategies based on coupling with THPs that recognize receptors expressed by tumor cells or tumor vasculature. Especially, vascular-homing peptides, targeting tumor vasculature, have their receptors expressed on or around the blood vessel including pro-angiogenic factors, metalloproteinase, integrins, fibrin-fibronectin complexes, etc...
May 22, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28536572/the-bacteriophage-ef-p29-efficiently-protects-against-lethal-vancomycin-resistant-enterococcus-faecalis-and-alleviates-gut-microbiota-imbalance-in-a-murine-bacteremia-model
#16
Mengjun Cheng, Jiaming Liang, Yufeng Zhang, Liyuan Hu, Pengjuan Gong, Ruopeng Cai, Lei Zhang, Hao Zhang, Jinli Ge, Yalu Ji, Zhimin Guo, Xin Feng, Changjiang Sun, Yongjun Yang, Liancheng Lei, Wenyu Han, Jingmin Gu
Enterococcus faecalis is becoming an increasingly important opportunistic pathogen worldwide, especially because it can cause life-threatening nosocomial infections. Treating E. faecalis infections has become increasingly difficult because of the prevalence of multidrug-resistant E. faecalis strains. Because bacteriophages show specificity for their bacterial hosts, there has been a growth in interest in using phage therapies to combat the rising incidence of multidrug-resistant bacterial infections. In this study, we isolated a new lytic phage, EF-P29, which showed high efficiency and a broad host range against E...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28529640/lung-cancer-targeting-peptides-with-multi-subtype-indication-for-combinational-drug-delivery-and-molecular-imaging
#17
Yi-Hsuan Chi, Jong-Kai Hsiao, Ming-Huang Lin, Chen Chang, Chun-Hsin Lan, Han-Chung Wu
Lung cancer is the leading cause of cancer-related death worldwide. Most targeted drugs approved for lung cancer treatment are tyrosine kinase inhibitors (TKIs) directed against EGFR or ALK, and are used mainly for adenocarcinoma. At present, there is no effective or tailored targeting agent for large cell carcinoma (LCC) or small cell lung cancer (SCLC). Therefore, we aimed to identify targeting peptides with diagnostic and therapeutic utility that possess broad subtype specificity for SCLC and non-small cell lung cancer (NSCLC)...
2017: Theranostics
https://www.readbyqxmd.com/read/28502784/liposome-loaded-phage-cocktail-enhanced-therapeutic-potential-in-resolving-klebsiella-pneumoniae-mediated-burn-wound-infections
#18
Parul Chadha, Om Prakash Katare, Sanjay Chhibber
BACKGROUND: Klebsiella pneumoniae is one of the predominant pathogens in burn wound infections, and prevalence of multidrug resistant strains has further complicated the situation. An increased interest in phage therapy as a means of combating infection has been accruing in recent years. In order to overcome the drawbacks associated with phage therapy, the present study was conducted to evaluate the potential of liposomes as a delivery vehicle for phage in the treatment of burn wound infection...
May 11, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28497737/-phage-therapy-a-realistic-weapon-against-multidrug-resistant-bacteria
#19
Nicolas Dufour, Laurent Debarbieux
The continuous increase in antibiotic resistance among bacteria in infectious diseases associated with the lack of new antibiotics able to circumvent them are urging physicians, researchers and politicians to look for others options for treatments. Among those, phage therapy (use of natural viruses that infect bacteria, called bacteriophages) is one of the most promising approaches. In this review, we first focus on the problematic raised by multidrug resistant bacteria before addressing the main biological characteristics of bacteriophages, as well as the credibility and the relevance of phage therapy...
April 2017: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28495757/complete-genome-sequence-of-a-novel-multidrug-resistant-klebsiella-pneumoniae-phage-vb_kpn_ime260
#20
Shaozhen Xing, Xiangchun Pan, Qiang Sun, Guangqian Pei, Xiaoping An, Zhiqiang Mi, Yong Huang, Baohua Zhao, Yigang Tong
Klebsiella pneumoniae is the most common clinically important opportunistic bacterial pathogen and its infection is often iatrogenic. Its drug resistance poses a grave threat to public health. The genomic data reported here comprise an important resource for research on phage therapy in the control of drug-resistant bacteria.
May 11, 2017: Genome Announcements
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