Gentaur Pub

#33631531   2021/02/13 To Up

Microfluidics-assisted conjugation of chitosan-coated polymeric nanoparticles with antibodies: Significance in drug release, uptake, and cytotoxicity in breast cancer cells.

N
Noé Escareño, Natalia Hassan, Marcelo J Kogan, Josué Juárez, Antonio Topete, Adrián Daneri-Navarro

2826 related Products with: Microfluidics-assisted conjugation of chitosan-coated polymeric nanoparticles with antibodies: Significance in drug release, uptake, and cytotoxicity in breast cancer cells.

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#33630844   2021/02/25 To Up

The cell surface protein MUL_3720 confers binding of the skin pathogen Mycobacterium ulcerans to sulfated glycans and keratin.

Mycobacterium ulcerans is the causative agent of the chronic, necrotizing skin disease Buruli ulcer. Modes of transmission and molecular mechanisms involved in the establishment of M. ulcerans infections are poorly understood. Interactions with host glycans are often crucial in bacterial pathogenesis and the 22 kDa M. ulcerans protein MUL_3720 has a putative role in host cell attachment. It has a predicted N-terminal lectin domain and a C-terminal peptidoglycan-binding domain and is highly expressed on the surface of the bacilli. Here we report the glycan-binding repertoire of whole, fixed M. ulcerans bacteria and of purified, recombinant MUL_3720. On an array comprising 368 diverse biologically relevant glycan structures, M. ulcerans cells showed binding to 64 glycan structures, representing several distinct classes of glycans, including sulfated structures. MUL_3720 bound only to glycans containing sulfated galactose and GalNAc, such as glycans known to be associated with keratins isolated from human skin. Surface plasmon resonance studies demonstrated that both whole, fixed M. ulcerans cells and MUL_3720 show high affinity interactions with both glycans and human skin keratin extracts. This MUL_3720-mediated interaction with glycans associated with human skin keratin may contribute to the pathobiology of Buruli ulcer.
Christopher J Day, Katharina Röltgen, Gerd Pluschke, Michael P Jennings

2779 related Products with: The cell surface protein MUL_3720 confers binding of the skin pathogen Mycobacterium ulcerans to sulfated glycans and keratin.

1mg1000 TESTS/0.65ml10100 U20.5mg

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#33630832   2021/02/25 To Up

Whole genome genetic variation and linkage disequilibrium in a diverse collection of Listeria monocytogenes isolates.

We performed whole-genome multi-locus sequence typing for 2554 genes in a large and heterogenous panel of 180 Listeria monocytogenes strains having diverse geographical and temporal origins. The subtyping data was used for characterizing genetic variation and evaluating patterns of linkage disequilibrium in the pan-genome of L. monocytogenes. Our analysis revealed the presence of strong linkage disequilibrium in L. monocytogenes, with ~99% of genes showing significant non-random associations with a large majority of other genes in the genome. Twenty-seven loci having lower levels of association with other genes were considered to be potential "hot spots" for horizontal gene transfer (i.e., recombination via conjugation, transduction, and/or transformation). The patterns of linkage disequilibrium in L. monocytogenes suggest limited exchange of foreign genetic material in the genome and can be used as a tool for identifying new recombinant strains. This can help understand processes contributing to the diversification and evolution of this pathogenic bacteria, thereby facilitating development of effective control measures.
Swarnali Louha, Richard J Meinersmann, Travis C Glenn

1608 related Products with: Whole genome genetic variation and linkage disequilibrium in a diverse collection of Listeria monocytogenes isolates.

200 200 100.00 ug100 assays100 μg100 μg100ug Lyophilized100 μg1 Set100 μg1 Set

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#33630578   2021/02/25 To Up

Development of Monoclonal Antibodies against Pea Globulins for Multiplex Assays Targeting Legume Proteins.

Legume proteins are widely used as food ingredients, but only some (soybean, lupin, and peanut) must be declared under consumer safety regulations to protect allergy sufferers. It is not yet mandatory to declare pea proteins as allergens even though they are predicted to be allergenic based on cross-reactivity in sensitized people. The processing of legume proteins can modify their allergenic properties and hence the need for specific and precise methods for the detection of all major legume allergens. There are many commercially available tests for known food allergens but not for ingredients that are yet to be classified as allergenic. We therefore generated sets of pea-specific antibodies targeting globulins to be used in a multiplex assay for the simultaneous detection of soybean, lupin, peanut, and pea proteins. We focused on the 7S globulin family, which is the least conserved among the four legumes, allowing the specific detection of proteins from each species. Having confirmed the specificity and sensitivity of the multiplex assay, we evaluated different processing steps for proteins rich in pea globulins to demonstrate the impact of food processing on antibody binding. Our sensitive multiplex assay provides a fast and reliable method for the specific detection of soybean, lupin, peanut, and pea allergens and is therefore ideal for food safety and authenticity testing applications.
Norbert Lidzba, Verónica García Arteaga, Andreas Schiermeyer, Heide Havenith, Isabel Muranyi, Stefan Schillberg, Jörg Lehmann, Elke Ueberham

1944 related Products with: Development of Monoclonal Antibodies against Pea Globulins for Multiplex Assays Targeting Legume Proteins.

10mg1mg1mg1mg1mg1 mg1 mg1mg500 ug1 mg100.00 ug100.00 ug

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#33630318   2021/02/25 To Up

Acute Immune thrombocytopenia following administration of Shingrix recombinant zoster vaccine.

Nicholas Schmidt, Hillary Maitland

2330 related Products with: Acute Immune thrombocytopenia following administration of Shingrix recombinant zoster vaccine.

1 mg20 100100 2.00 ug50010100 μg5.00 ug1mg1 mg100ug

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#33630229   2021/02/25 To Up

Molecular characterization of poleroviruses isolated from oilseed rape in Greece.

In 2018 virus-like symptoms, typical of polerovirus infection were observed in several oilseed rape crops in northern Greece. In order to identify the etiological agent of these symptoms a polerovirus-generic RT-PCR assay was applied. Sequencing of the amplicons revealed the presence of virus isolates genetically close to turnip yellows virus (TuYV). Further molecular characterization of the near complete genome of '1-2', 'Geo1', 'Geo7' and 'Geo15' isolates revealed that they share > 96% nt identity with various TuYV sequences. On the other hand, the fifth, characterized isolate from oilseed rape, termed '1-1', showed higher sequence similarity to brassica yellows virus (BrYV) regarding the 5' part of the complete coding sequence, whereas the 3' part was closely related to TuYV isolates. A recombination analysis using RDP indicated the presence of a putative breakpoint (nucleotide position 2964) in '1-1' genome and it is proposed that the virus isolate '1-1' might be an interspecies recombinant between BrYV and TuYV. To our knowledge, this is the first time that the complete coding sequences of Greek TuYV isolates have been determined and the first detection of a BrYV/TuYV recombinant isolate infecting oilseed rape in Greece.
C G Orfanidou, L Lotos, G Tsiolakis, S K Stefanidis, J T Tsialtas, N I Katis, V I Maliogka

2824 related Products with: Molecular characterization of poleroviruses isolated from oilseed rape in Greece.

100 ul100 ul50 ul50 ul100 20 mg100 ug2.5 mg1g 100 ug 100ug Lyophilized10 ml

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#33629859   2021/02/25 To Up

Aptamer Conjugated Gold Nanostar-Based Distance-Dependent Nanoparticle Surface Energy Transfer Spectroscopy for Ultrasensitive Detection and Inactivation of Corona Virus.

The ongoing outbreak of the coronavirus infection has killed more than 2 million people. Herein, we demonstrate that Rhodamine 6G (Rh-6G) dye conjugated DNA aptamer-attached gold nanostar (GNS)-based distance-dependent nanoparticle surface energy transfer (NSET) spectroscopy has the capability of rapid diagnosis of specific SARS-CoV-2 spike recombinant antigen or SARS-CoV-2 spike protein pseudotyped baculovirus within 10 min. Because Rh-6G-attached single-stand DNA aptamer wrapped the GNS, 99% dye fluorescence was quenched because of the NSET process. In the presence of spike antigen or virus, the fluorescence signal persists because of the aptamer-spike protein binding. Specifically, the limit of detection for the NSET assay has been determined to be 130 fg/mL for antigen and 8 particles/mL for virus. Finally, we have demonstrated that DNA aptamer-attached GNSs can stop virus infection by blocking the angiotensin-converting enzyme 2 (ACE2) receptor binding capability and destroying the lipid membrane of the virus.
Avijit Pramanik, Ye Gao, Shamily Patibandla, Dipanwita Mitra, Martin G McCandless, Lauren A Fassero, Kalein Gates, Ritesh Tandon, Paresh Chandra Ray

2375 related Products with: Aptamer Conjugated Gold Nanostar-Based Distance-Dependent Nanoparticle Surface Energy Transfer Spectroscopy for Ultrasensitive Detection and Inactivation of Corona Virus.

100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug Lyophilized100ug100ug Lyophilized100ug100ug Lyophilized

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#33629856   2021/02/25 To Up

Biosynthesis of Chlorogenic Acid Using an Artificial Microbial Community.

Engineering an artificial microbial community for natural product production is a promising strategy. As mono- and dual-culture systems only gave non-detectable or minimal chlorogenic acid (CGA) biosynthesis, here, a polyculture of three recombinant strains, acting as biosynthetic modules of caffeic acid (CA), quinic acid (QA), and CGA, was designed and used for CGA biosynthesis. An influx transporter of 3-dehydroshikimic acid (DHS)/shikimic acid (SA), ShiA, was introduced into the QA module-a DHS auxotroph. The QA module proportion in the polyculture and CGA production were found to be dependent on ShiA expression, providing an alternative approach for controlling microbial community composition. The polyculture strategy avoids metabolic flux competition in the biosynthesis of two CGA precursors, CA and QA, and allows production improvement by balancing module proportions. The performance of this polyculture approach was superior to that of previously reported approaches of CGA production.
Shizhong Li, Chaoning Liang, Guoxia Liu, Jian-Ming Jin, Yong Tao, Shuang-Yan Tang

2574 related Products with: Biosynthesis of Chlorogenic Acid Using an Artificial Microbial Community.

50 mg50 ug 100ug Lyophilized100 μl100ug Lyophilized100ug Lyophilized100ug Lyophilized500 g1 mg100ug Lyophilized100ug Lyophilized100ug Lyophilized

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#33629793   2021/02/25 To Up

Successful use of recombinant activated factor VII administered via automated bolus pump following emergency laparoscopic appendectomy in a patient with mild congenital FVII deficiency: Case report.

Heather Perkins, Robert J Klaassen

1152 related Products with: Successful use of recombinant activated factor VII administered via automated bolus pump following emergency laparoscopic appendectomy in a patient with mild congenital FVII deficiency: Case report.

100ug100ug100ug Lyophilized100ug100ug Lyophilized100ug Lyophilized100ug100ug100ug100ug100ug Lyophilized100ug

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