840 search results for “antibiotic resistance” in the Public website
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Search and rescue: tackling antibiotic resistance with chemistry
With the rise of multi-drug resistant bacterial pathogens, the possibility of a post-antibiotic world is quickly becoming reality.
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Structural characterization of bacterial proteins involved in antibiotic resistance and peptidoglycan biosynthesis
This thesis describes the structural and biochemical characterization of the β-lactamase BlaC from Mycobacterium tuberculosis (Mtb), and the Alr and YlmE proteins from Streptomyces coelicolor A3(2).Mtb is the main cause of tuberculosis.
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Brick in the Wall: The role of the actinobacterial cell wall in antibiotic resistance, phylogeny and development
Streptomyces are multicellular, Gram-positive bacteria in the phylum of actinobacteria which produce a high amount of bioactive natural products of which the expression is tightly coordinated with the life cycle.
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New polymyxin antibiotics for old problems: addressing nephrotoxicity and resistance
Polymyxins are clinically used antibiotics, discovered in mid-20th century. Once abandoned due to excessive nephrotoxicity, they are now used increasingly to address infections caused by multi-drug resistant Gram-negative bacteria.In this thesis, we describe the development and synthesis of analogues…
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Antibiotic combination therapies against drug resistant Gram negative pathogens
Can effective synergists be identified to enhance the effect of antibiotics against Gram negative pathogens?
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The EPIC Alliance joins forces to combat antibiotic resistance
No, this isn’t about a Star Wars Alliance that wants to suppress The Resistance. Rather, the EPIC Alliance brings together scientific experts from seven countries to address the growing threat of antibiotic resistance. Leiden professor Nathaniel Martin is part of the 11-member consortium.
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Discovery of antibiotics and their targets in multidrug-resistant bacteria
Global healthcare is on the verge of an antibiotic availability crisis as bacteria have evolved resistance to nearly all known antibacterials. Identifying new antibiotics that operate via novel modes-of-action is therefore of high priority.
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Next generation bacitracin: reimagining a classic antibiotic
Given the accelerating appearance of antimicrobial resistance, there is an urgent need for more fundamental research into novel antibiotic strategies. The work in this thesis helps to address this global problem by developing new antibiotic compounds, inspired by the antibacterial mechanisms of the…
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Synthesis of Ribitol Phosphate based Wall Teichoic acids
Antibiotic resistance, caused by widespread use of antibiotics, leads to bacterial infections that are difficult, if not impossible, to treat and is a major worldwide health concern.
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Metabolomic fingerprint biomarkers to guide antibiotic therapy and reduce resistance development
Ontwikkeling van resistentie tegen antibiotica kan optreden als patiënten onnodig of te lang met antibiotica behandeld worden. Diagnostiek waarmee snel een bacteriële infectie vastgesteld kan worden, of de response op antibiotica bepaald kan worden, zijn daarom belangrijk om therapie te optimaliseren…
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Next generation lipopeptide antibiotics
This thesis describes the evaluation of novel natural products with antibacterial activity enabled by total chemical synthesis.
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VOILA (Validation of Innovative Lipopeptide Antibiotics)
Examining the therapeutic potential of new semisynthetic lipopeptide antibiotics
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Clever variant of antibiotic bypasses resistance in bacteria
Biological chemist Nathaniel Martin is going to test an alternative antibiotic that can combat common resistant bacteria such as MRSA. For this purpose, he will receive 350,000 euros from the NWO's NACTAR programme. ‘We want to know how safe and effective our antibiotic is in a realistic situation.’
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New antibiotics
Pathogenic bacteria are increasingly resistant to today’s antibiotics. Professor Gilles van Wezel seeks new forms of antibiotics in good bacteria that live in the soil.
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Quest for new antibiotics
Gubbens
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Semisynthetic glycopeptide antibiotics
Vancomycin is a last-resort antibiotic for the treatment of many Gram-positive bacterial infections, while remaining inactive against Gram-negative strains.
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A much-needed new class of antibiotics
Antimicrobial resistance (AMR) is the phenomenon that pathogens become insensitive to the antibiotics that we use against them. A growing number of pathogens is becoming resistant, with methicillin-resistant S. aureus (MRSA) as the most famous example. But while the threat of AMR represents a slow-moving…
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Finding and valorizing new antibiotics using AI
Antibiotics are a class of medicine most people take for granted. But pathogenic bacteria are becoming more and more resistant to our antibiotics, and this poses a great challenge for future treatments. There is thus a great societal need to identify new molecules that can address new targets and be…
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The Ecology and Evolution of Microbial Warfare in Streptomyces
The soil-dwelling, filamentous bacteria of the genus Streptomyces are renowned for their production of useful secondary metabolites including antibiotics. The work described in this thesis provides new insights on the role and regulation of antibiotic production and resistance in these bacteria.
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Environmental and metabolomic study of antibiotic production by actinomycetes
Promotor: Prof.dr. G.P. van Wezel
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NACTAR: The lugdunomycins: a new class of polyketide antibiotics with unique chemical scaffold
Aim of the proposal is to develop lugdunomycin into a drug candidate able to treat infectious diseases caused by multi-drug resistant pathogens.
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Marcellus Ubbink
Science
m.ubbink@chem.leidenuniv.nl | +31 71 527 4628
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Quantitative pharmacological modelling for optimizing treatment of sepsis
Sepsis is a life-threatening condition caused by a dysregulated host response to infection, it is associated with significant morbidity, mortality, and with a high financial burden on global healthcare systems. Bacterial infections are the primary cause of sepsis, but the growing prevalence of antimicrobial…
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Nathaniel Martin: why won’t antibiotics cure us anymore?
Current means of fighting bacteria are no longer as good as they used to be because of antibiotic resistance. These days, people are dying from bacterial infections that could have been cured fifty years ago.
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TARGETBIO: Transmission of Antimicrobial Resistance Genes and Engineered DNA from Transgenic Biosystems in Nature
This project aims to assess the risk of spread of antimicrobial resistance genes in the environment derived from currently used synthetic biology approaches in the field of drug discovery.
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Nathaniel Martin in podcast about antimicrobial resistance
Professor Biological chemistry Nathaniel Martin from the Institute of Biology Leiden is interviewed by the Netherlands Innovation Network on innovative scientific approaches. He talks about his work on designing new antibiotics and developing new molecules to make resistant bacteria susceptible again…
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Development of new antibiotics from plant-originated products
Utilization of plant-originated products as new antibiotics
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Antibiotic Discovery: From mechanistic studies to target ID
The investigations described in this thesis lay out strategies aimed at advancing antibiotic research and development. The examples presented revolve around two main approaches: understanding drug-target interactions and target identification.
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Discovery of novel Antibiotics from Actinomycetes by Integrated Metabolomics & Genomics Approaches
Promotor: G.P. van Wezel, Co-promotor: Y.H. Choi
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Aquatic eDNA: Beyond Species Presence
As a non-invasive genetic method, eDNA based approaches have become an important component of ecologists' and environmental managers' toolkits for biomonitoring in conservation and an increasingly important source of ecological knowledge.
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methanol to medicine – Sustainable microbial production of polyketide antibiotics
Can the pink-pigmented microbe Methylobacterium extorquens be genetically engineered to convert the sustainable raw material methanol into antibiotics?
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In Pursuit of Next-Generation Lipopeptide Antibiotics
Can new variants of daptomycin and the polymyxins be found?
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LED3 Lecture: Natural Product Antibiotics
Lecture
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Postdoc - Translational Pharmacology in antibiotic regimen development
Science, Leiden Academic Centre for Drug Research (LACDR)
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New antibiotic named after Leiden
Increasing resistance and a lack of new antibiotics are a serious problem for public health. Against this background, Gilles van Wezel of the Institute of Biology Leiden is looking for new medicines. Together with former PhD student Changsheng Wu and colleagues he discovered the special antibiotic lugdunomycin,…
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the Guanidino Lipoglycopeptides: A Novel Family of Glycopeptide Antibiotics with Best-in-Class Potential
Can we make a better vancomycin?
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Mechanisms and consequences of horizontal gene transfer in cell wall-deficient cells of Kitasatospora viridifaciens
The bacterial cell wall is a nearly universal structure that offers protection and gives the cell its shape. However, environmental stressors, such as cell wall-targeting antibiotics and hyperosmotic conditions, can induce bacteria to shift to a wall-deficient state. It is unknown whether the lack of…
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Do common antibiotic treatments influence emotional processing?
People who have taken antibiotics in the past three months pay more attention to negative facial expressions, according to research by postdoc Katerina Johnson and assistant professor Laura Steenbergen. This may explain how antibiotics increase the risk of developing depression.
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Multi-omics studies of the control of growth and antibiotic production of Streptomyces
Actinobacteria are Gram-positive bacteria that have a complex multicellular life cycle and are well known for their ability to produce a wide range of bioactive natural products (NPs).
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Potentiation of Gram-positive specific antibiotics against Gram-negative bacteria through outer membrane disruption
Extending our current arsenal of antibiotics is key to staying ahead in the arms race between humans and resistant bacteria.
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This week the National Antibiotic Development Platform, NADP, was officially launched via a meeting in Utrecht.
Antibiotic resistance is one of the major threats to human health. This week the National Antibiotic Development Platform, NADP, was officially launched via a meeting in Utrecht, with many of the stakeholders in the field present.
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reduced mycelial heterogeneity for improved production of enzymes and antibiotics
How can cell wall engineering approaches be used to improve streptomycetes for industry to make new antibiotics?
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transfer and spreading of biosynthetic gene clusters and antimicrobial resistance
Biosynthetic gene clusters (BGCs) for natural products are widespread in microbial genomes, and they are rapidly exchanged. This research assesses the factors that control the spread of BGCs and resistance genes in nature. This includes risk assessment for the spread of engineered DNA in nature.
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Statistical learning for complex data to enable precision medicine strategies
Explaining treatment response variability between and within patients can support treatment and dosing optimization, to improve treatment of individual patients.
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RESIST Study
Knowledge of mental distress and resilience factors over the time span from before to after a stressor is important to be able to leverage the most promising resilience factors and promote mental health at the right time. To shed light on this topic, we designed the RESIST Study, in which we assessed…
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Quantitative Pharmacology
The Quantitative Pharmacology group headed by Coen van Hasselt focusses on the application of state-of-the-art quantitative pharmacometrics and systems pharmacology modeling combined with translational experimental models to develop personalized treatment strategies for antibiotics and to combat antimicrobial…
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Chemistry & Chemical Biology approaches toward novel cyclic peptide antibiotics
Can cyclic peptides provide a new generation of antibiotics?
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A metabolomics resistance test
Can metabolomic profiling be used to predict resistance against insect herbivores in plants?
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Anthracycline biosynthesis in Streptomyces: engineering, resistance and antimicrobial activity
Actinobacteria are well known for the production of bioactive natural products, many of which have applications in the fields of human, animal and plant health. Subject of this thesis are the anthracyclines, glycosylated aromatic polyketides with potent anticancer activity.
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NO-ESKAPE New Strategies for Overcoming the ESKAPE Pathogens
Natural product inspired antibiotics to address resistance