Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Looking for new antibiotics

08.04.2020

DSMZ scientist develops innovative strategy for drug screening

A team of researchers led by Professor Dr. Yvonne Mast from the Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures in Braunschweig (Germany) have developed a new strategy for the activation of silent antibiotic gene clusters.


Growth of Streptomyces lividans on agar plate. On the left the control, on the right the strain with the SARP overexpression construct (pGM190/papR2).

DSMZ/Mast


Prof. Dr. Yvonne Mast

DSMZ

They showed that the Streptomyces Antibiotic Regulatory Protein (SARP), a regulator that controls the biosynthesis of antibiotics in streptomycetes, can be used as a general activator of various antibiotic gene clusters.

The research data on how SARPs can be used to identify and specifically switch on inducible gene clusters have been published in the internationally renowned journal Frontiers in Microbiology.

In their study, the team of Prof. Yvonne Mast was able to show that SARP regulators occur in many different actinomycetes and are part of gene clusters that code for different types of secondary metabolites. In their experiments the researchers showed that SARP regulators have the potential to regulate gene clusters also in other host strains.

Using the SARP regulator PapR2 as an example, the researchers demonstrated that this regulator has cluster-activating properties not only in the bacterium Streptomyces pristinaespiralis, in which it occurs naturally; it is also able to activate silent gene clusters in other streptomycetes such as Streptomyces lividans, thereby enabling the production of bioactive substances.

By better understanding regulatory mechanisms and with the help of genome sequence data, researchers can now predict which gene clusters can potentially be activated by SARPs, which will facilitate later drug discovery.

Activation of silent gene clusters

Actinomycetes are known for their potential to produce many bioactive substances. Based on genome sequence analyses, it is known that the organisms harbour numerous so-called "silent gene clusters", which contain the information for the synthesis of active substances, which however is not translated into the corresponding substances.

It is assumed that actinomycetes theoretically could produce ten times more secondary metabolites than are normally isolated under standard laboratory conditions. Why many of the clusters are "inactive" is still unclear.

However, one reason might be the lack of activation by regulatory elements. The discovery and activation of such silent gene clusters, which may result in the identification and characterisation of new potential drugs are of utmost importance in times of increasing numbers of infections caused by antibiotic-resistant pathogens.

"The advantage of the method we use is that it allows us to activate gene clusters in a relatively simple but targeted manner. Most other strategies for the activation of silent gene clusters are either unspecific activation approaches, which require major analytical efforts or are gene cluster-specific, which involves a lot of cloning work." Professor Yvonne Mast summarizes the advantages of her research approach.

Original publication:
Disclosing the Potential of the SARP-Type Regulator PapR2 for the Activation of Antibiotic Gene Clusters in Streptomycetes. Krause J, Handayani I, Blin K, Kulik A, Mast Y.
Front Microbiol. 2020 Feb 18;11:225. doi: 10.3389/fmicb.2020.00225.

Press contact:
Sven-David Müller, Head of Public Relations, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH
Phone: ++49 (0)531/2616-300
Mail: Sven.David.Mueller@dsmz.de

About the Leibniz Institute DSMZ
The Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures is the world's most diverse collection of biological resources (bacteria, archaea, protists, yeasts, fungi, bacteriophages, plant viruses, genomic bacterial DNA as well as human and animal cell lines). Microorganisms and cell cultures are collected, investigated and archived at the DSMZ. As an institution of the Leibniz Association, the DSMZ with its extensive scientific services and biological resources has been a global partner for research, science and industry since 1969. The DSMZ is the first registered collection in Europe (Regulation (EU) No. 511/2014) and certified according to the quality standard ISO 9001:2015. As a patent depository, it offers the only possibility in Germany to deposit biological material in accordance with the requirements of the Budapest Treaty. In addition to scientific services, research is the second pillar of the DSMZ. The institute, located on the Science Campus Braunschweig-Süd, accommodates more than 73,000 cultures and biomaterials and has 198 employees. www.dsmz.de 

The Leibniz Association
The Leibniz Association connects 96 independent research institutions that range in focus from the natural, engineering and environmental sciences via economics, spatial and social sciences to the humanities. Leibniz Institutes address issues of social, economic and ecological relevance. They conduct knowledge-driven and applied basic research, maintain scientific infrastructure and provide research-based services. The Leibniz Association identifies focus areas for knowledge transfer to policy-makers, academia, business and the public. Leibniz institutions collaborate intensively with universities – in the form of “Leibniz ScienceCampi” (thematic
partnerships between university and non-university research institutes), for example – as well as with industry and other partners at home and abroad. They are subject to an independent evaluation procedure that is unparalleled in its transparency. Due to the importance of the institutions for the country as a whole, they are funded jointly by the Federation and the Länder, employing some 19,100 individuals, including 9,900 researchers. The entire budget of all the institutes is approximately 1.9 billion Euros. www.leibniz-gemeinschaft.de

Originalpublikation:

Disclosing the Potential of the SARP-Type Regulator PapR2 for the Activation of Antibiotic Gene Clusters in Streptomycetes. Krause J, Handayani I, Blin K, Kulik A, Mast Y.
Front Microbiol. 2020 Feb 18;11:225. doi: 10.3389/fmicb.2020.00225.

Dr. Manuela Schüngel | idw - Informationsdienst Wissenschaft

More articles from Life Sciences:

nachricht When predictions of theoretical chemists become reality
22.05.2020 | Technische Universität Dresden

nachricht From artificial meat to fine-tuning photosynthesis: Food System Innovation – and how to get there
20.05.2020 | Potsdam-Institut für Klimafolgenforschung

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: I-call - When microimplants communicate with each other / Innovation driver digitization - "Smart Health“

Microelectronics as a key technology enables numerous innovations in the field of intelligent medical technology. The Fraunhofer Institute for Biomedical Engineering IBMT coordinates the BMBF cooperative project "I-call" realizing the first electronic system for ultrasound-based, safe and interference-resistant data transmission between implants in the human body.

When microelectronic systems are used for medical applications, they have to meet high requirements in terms of biocompatibility, reliability, energy...

Im Focus: When predictions of theoretical chemists become reality

Thomas Heine, Professor of Theoretical Chemistry at TU Dresden, together with his team, first predicted a topological 2D polymer in 2019. Only one year later, an international team led by Italian researchers was able to synthesize these materials and experimentally prove their topological properties. For the renowned journal Nature Materials, this was the occasion to invite Thomas Heine to a News and Views article, which was published this week. Under the title "Making 2D Topological Polymers a reality" Prof. Heine describes how his theory became a reality.

Ultrathin materials are extremely interesting as building blocks for next generation nano electronic devices, as it is much easier to make circuits and other...

Im Focus: Rolling into the deep

Scientists took a leukocyte as the blueprint and developed a microrobot that has the size, shape and moving capabilities of a white blood cell. Simulating a blood vessel in a laboratory setting, they succeeded in magnetically navigating the ball-shaped microroller through this dynamic and dense environment. The drug-delivery vehicle withstood the simulated blood flow, pushing the developments in targeted drug delivery a step further: inside the body, there is no better access route to all tissues and organs than the circulatory system. A robot that could actually travel through this finely woven web would revolutionize the minimally-invasive treatment of illnesses.

A team of scientists from the Max Planck Institute for Intelligent Systems (MPI-IS) in Stuttgart invented a tiny microrobot that resembles a white blood cell...

Im Focus: NASA's Curiosity rover finds clues to chilly ancient Mars buried in rocks

By studying the chemical elements on Mars today -- including carbon and oxygen -- scientists can work backwards to piece together the history of a planet that once had the conditions necessary to support life.

Weaving this story, element by element, from roughly 140 million miles (225 million kilometers) away is a painstaking process. But scientists aren't the type...

Im Focus: Making quantum 'waves' in ultrathin materials

Study co-led by Berkeley Lab reveals how wavelike plasmons could power up a new class of sensing and photochemical technologies at the nanoscale

Wavelike, collective oscillations of electrons known as "plasmons" are very important for determining the optical and electronic properties of metals.

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Dresden Nexus Conference 2020: Same Time, Virtual Format, Registration Opened

19.05.2020 | Event News

Aachen Machine Tool Colloquium AWK'21 will take place on June 10 and 11, 2021

07.04.2020 | Event News

International Coral Reef Symposium in Bremen Postponed by a Year

06.04.2020 | Event News

 
Latest News

Inexpensive retinal diagnostics via smartphone

25.05.2020 | Medical Engineering

Smart machine maintenance: New AI system also detects unknown faults

25.05.2020 | Information Technology

Artificial Intelligence for optimized mobile communication

25.05.2020 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>