Virus-based therapies and technologies

The focus of this innovation field with working groups in Stuttgart and Biberach is on concepts and solutions for the use of viruses and phages for the targeted medical (prevention, therapy, diagnostics) or biotechnological application and biointelligent use. The services offer a range from genome engineering to process development for the production of viral agents in lab-scale.

One focus is the development of viruses into therapeutic agents. Oncolytic viruses, for example, represent promising and innovative cancer therapies. In the innovation field, a viral platform based on Herpes Simplex Virus 1 (HSV-1) has already been developed. The ability of viruses/viral vectors to transport genetic information into cells and anchor it there can be used in diverse ways, e.g. for cell and gene therapy.

Bacteriophages are attractive alternatives for combating antibiotic-resistant bacteria and can be used in a variety of technological ways, for example for the production of antibodies, as biointelligent actuators and sensors in fermentation or for the degradation of biofilms.

In addition, within the innovation field we are developing virus-like particles as vaccines and for targeted drug delivery.

From virus engineering to analyzing the formulated virus: Fraunhofer IGB provides expertise along the entire drug development process

Our competencies established at both the Stuttgart and Biberach VBT branch span the entire pharmaceutical development process starting with molecular virus engineering to increase activity and efficiency and ranging to process developments to improve virus production and novel methods to analyze the formulated virus. Consequentially, we will contribute to establish oncolytic viruses and bacteriophages as accepted and broader-used therapeutic modalities.

Virus-based technologies

 

Therapeutic viruses

Understanding infection mechanisms of viruses, diagnosing them and developing approaches to the therapy of cancer and genetic defects are central concerns of our research. By means of viral genome engineering, we have established a versatile virus engineering platform called TheraVision. Based on this, among other things, we develop new virus, cell and process technologies for the production and preclinical testing of novel virus-based therapeutics.

 

Virus-like particles

The research group develops virus-based therapies. We provide virus-like particles with antigens for use as vaccines or develop them as vehicles for targeted drug delivery.

 

Bacteriophages

Bacteriophages are viruses that specifically and exclusively destroy bacteria. They can be used for therapeutic purposes, for bacterial diagnostics and to break down biofilms. We are dealing with the groundbreaking topic of their application-related use for targeted germ reduction.

Molecular diagnostics

 

Culture and detection of viruses

With our experience and infrastructure we offer the cultivation and production of selected viruses. For characterization and further investigation a number of assays are available.

 

PCR technologies

PCR-based technologies form the basis for rapid identification and quantification of pathogens. In particular, we develop multiplex PCR systems for the highly parallel detection of pathogens. On their basis, methods for the diagnosis of viruses, fungi and bacteria can be developed for customers from companies, hospitals and research institutions.

 

Array technologies

With many years of experience we develop microarrays based on nucleic acids or proteins as effective detection systems for pathogens of sepsis or skin infections, the detection of resistances or the diagnosis of respiratory diseases: from probe design to immobilization with contact printing methods.

Infectious biology and array technologies

Production, culture and characterization of human pathogenic viruses

Viruses are minute pathogens that threaten humans and animals in great diversity and can lead to diseases. Understanding their infection mechanisms, detecting them diagnostically, and developing approaches for targeted prevention (vaccines) and therapy (antiviral molecules) are central concerns of Prof. Bailer's research group.

With our virological, cell biological and molecular biological experience and infrastructure we offer the cultivation, production and detection of selected human pathogenic viruses. Direct and indirect detection methods are available for characterization and further investigation.

Range of services

  • Virus culture (quantification, purification, characterization of viruses)
  • Testing of antiviral molecules and characterization of their mode of action
  • Analysis of virus-virus and virus-host protein interactions
  • 2D infection systems
  • Virus diagnostics by bioanalyzer, PCR, RT-qPCR, microarray and ELISA
  • Differentiation of bacterial, viral and fungal diseases
  • Virus engineering (herpes viruses)

Viruses: Herpes viruses (HSV-1, HSV-2, VZV, EBV), polio viruses, influenza viruses can be produced, concentrated and purified in the L2/S2 range.

Diagnostics

A number of virologic assays are available to characterize the viruses:

  • Viral plaque assay
  • TCID50 assay
  • Growth kinetics analysis
  • ELISA

Molecular biological assays are available for the detection of pathogen genomes:

  • Bioanalyzer
  • PCR
  • RT-qPCR

For the analysis of protein interactions (also in high throughput) the yeast-2-hybrid system, the Lumier and the BRET assay are used. Indirect immunofluorescence analysis by confocal microscopy is one of the standard methods.

Selected publications

Heese, R.; Wetschky, J.; Rohmer, C.; Bailer, S.M.; Bortz, M. Fast and Non-Invasive Evaluation of Yeast Viability in Fermentation Processes Using Raman Spectroscopy and Machine Learning. Beverages 2023, 9, 68. doi: https://doi.org/10.3390/beverages9030068

Bailer, S. M.; Rohmer, C.; Rother, D.; Epting, K. Potenzialanalyse Virus-basierte Therapien - Neue Therapieformen und deren Translation in die Klinik : Abschlussbericht. (2023). Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik IGB.

Lieber, D.; Bailer S. M. (2013)
Determination of HSV-1 infectivity by plaque assay and a luciferase reporter cell line
Methods Mol Biol. 1064: 171-181. doi: 10.1007/978-1-62703-601-6_12.

Striebinger, H.; Koegl, M.; Bailer, S. M. (2013)
A high-throughput yeast two-hybrid protocol to determine virus-host protein interactions
Methods Mol Biol. 1064: 1-15. doi: 10.1007/978-1-62703-601-6_1.

Lenac Roviš, T.; Bailer, S. M.; Pothineni, V. R.; Ouwendijk, W. J.; Šimić, H., Babić, M.; Miklić, K.; Malić, S.; Verweij, M. C.; Baiker, A.; Gonzalez, O.; von Brunn, A.; Zimmer, R.; Früh, K.; Verjans, G. M., Jonjić, S; Haas, J. (2013)
Comprehensive analysis of varicella-zoster virus proteins using a new monoclonal antibody collection
J Virol. 87(12): 6943-6954. doi: 10.1128/JVI.00407-13.
 

Scientific publications

Anti-Corona Projects

 

Prevention

CoroVacc – Attenuated SARS-CoV-2 vaccine

Development of a SARS-CoV-2 vaccine based on attenuated carrier viruses.

Due to a modular approach by the Fraunhofer Institutes IGB and IZI, the carrier virus can be developed with SARS-CoV-2 specific antigens at short notice and tested with regard to its vaccination effect.

 

Prevention

ViProTeFa – Development and establishment of a virus protection test facility

The Fraunhofer Institutes IPA and IGB want to establish a worldwide unique test facility for the qualification of protection devices and measures. The aim is the standardized testing of protective equipment and cleaning processes and the development of a widely applicable standard or norm.

 

Prevention

AVATOR

Thermal inactivation of aerosol-borne viruses

 

Aerosols pose an increased risk of infection with SARS-CoV-2. This is where the "Virus Grill" project comes in: By inactivating viruses through heating the air, the probability of infection via droplets suspended in the ambient air is to be reduced.

 

Virus detection

Healthy Air Initiative

The »Healthy Air Initiative« is a network of Fraunhofer institutes and other partners that pursues an integrated concept of research, knowledge transfer and networking. The new advisory center serves as a contact point for small and medium-sized companies with questions about ventilation concepts and air cleaning technologies. Within the framework of the initiative, manufacturers have the opportunity to use test environments and to carry out tests to assess the effectiveness of air cleaning technologies.