Microbiology & Genomics Lab

In our in-house Microbiology & Genomics laboratory, we have state-of-the-art technical equipment that enables us to perform a wide range of microbiological and molecular biological analyses. Whether sequencing, PCR-based methods, laser scanning microscopy or "classic" culture-based microbiology: we not only have the know-how, but also the right equipment to answer a wide range of research questions.

Ion Torrent:

  • Ion GeneStudio S5 Prime (with automated Sequencing Preparation using Ion Chef System)
  • Genexus System

Short-read sequencing is a method that involves sequencing short DNA fragments, usually in the size range between 50 and 300 bases. This method is used for both whole genome sequencing and sequencing specific target regions in the genome. In our laboratory, we use the semiconductor sequencing method (Ion Torrent).

Preparation for automated sequencing preparation

Sequencing using Ion Torrent semiconductor technology

Automated sequencing workflow with the Genexus system

Nanopore Sequencing:

  • GridION
  • MinION

Sanger Sequencing:

  • SeqStudio

With long-read sequencing, significantly longer DNA fragments can be sequenced compared to short-read sequencing. This can be an advantage, for example, in the detection of more complex structural genetic variants. With the nanopore sequencing method, DNA strands with a length of several hundred kilobases can be sequenced. Sanger sequencing is considered the gold standard of sequencing techniques and enables high accuracy, especially in the determination of single base pairs and mutations.

Long-read sequencing using Nanopore GridION
Long-read sequencing using Nanopore GridION

Polymerase chain reaction (PCR):

  • ProFlex PCR

Quantitative PCR (qPCR):

  • QuantStudio 3 Real-time PCR
  • QuantStudio 7 Pro Real-time PCR

Digitale PCR (dPCR):

  • QuantStudio 3D Digital PCR
  • QuantStudio Absolute Q Digital PCR

The polymerase chain reaction, or PCR for short, is an integral part of our everyday laboratory work and has been known to the general public since the emergence of SARS-CoV-2. This technique allows us to amplify certain DNA target sequences, which is essential for subsequent sequencing.

Performing digital PCR with the QuantStudio Absolute Q
Performing digital PCR with the QuantStudio Absolute Q

Using qPCR, one or optionally several target sequences can be amplified and their concentration quantified via fluorescence measurement. We carry out digital PCR as a special form of quantitative PCR: This enables high accuracy through absolute quantification.

Confocal laser scanning microscope (CLSM):

  • Leica Stellaris 5

Bioreactors:

  • BioFlo 120

Flowcytometry:

  • CytoFLEX

Multimode-Microplate Reader:

  • TECAN spark

Incubator

In addition to the wide range of molecular biological methods, we also carry out “classic” microbiological methods. These include the extraction of pure cultures from environmental samples, growth tests of cultures, e.g. under the influence of antiobiotics or the determination of cell counts using flow cytometry.

Our bioreactors allow us to carry out a wide range of fermentation experiments, whether as a batch, fed-batch or continuous process.

One of our two BioFlo bioreactors
One of our two BioFlo bioreactors

Disk diffusion susceptibility test

Agar plate with different bacterial colonies

Inoculated culture medium for growth experiment

Automated high-throughput extraction:

  • KingFisher DuoPrime
  • KingFisher APEX

Cryostat:

  • Leica CM3050 S Kryostat

various centrifuges

Ultracentrifuge

Sample Preparation

Different research questions require individual sample preparation techniques: We have a variety of centrifuges for concentrating samples, as well as an ultracentrifuge for separating particles. Several high-throughput extraction devices are available for the efficient extraction of DNA and RNA. Our cryostat allows us to prepare thin sections, for example to examine biofilms.

One of our many centrifuges

Preparation of activated sludge samples for extraction

Concentration of samples by centrifugation

Automated Liquid-Handling Systems:

  • Hamilton ML Prep
  • Hamilton MicroLab STAR

Automated liquid handling

Our two automated liquid handling systems support our work in two ways: the significant time savings enable us to achieve a higher sample throughput while maintaining high precision.

Hamilton MicroLab STAR from the outside...

... and from inside

Our "little" helper: Hamilton ML Prep

DNA size selection:

  • BluePippin Instrument

Automated elektrophoresis:

  • 4150 TapeStation System

Gelektrophoresis

Fluorometric nucleic acid quantification:

  • Qubit Flex Fluorometer

In addition to classic gel electrophoresis for determining the size of DNA fragments, we also have the option of carrying out automated electrophoresis in our laboratory. This enables us to determine both the size and concentration of DNA and RNA within a few minutes. By selecting the size, we can select DNA fragments accordingly for the subsequent analysis procedures.

Automated elektrophoresis
Automated elektrophoresis

Clean Bench

Autoclave

Ultra-low temperature freezer

Our laboratory has all the necessary equipment to carry out microbiological and molecular biological work safely and to generate high-quality results. We use sterile benches, an autoclave for the sterilization of consumables and working materials and liquid media, as well as ultra-low temperature freezers for the safe storage of samples, DNA and RNA.

Samples storageat temperatures as low as -85°C

Safe storage of samples, DNA and RNA, even over longer periods of time

Our sterile benches enable contamination-free work