Research

Funding: MWK über Universität Göttingen, 24.805 EUR

Project Details:
Die Zusammensetzung und Reaktivität des lungenspezifischen Immunsystems wird durch verschiedene Mechanismen gesteuert. Wichtig ist hierbei insbesondere die körpereigene, genetische Disposition des Individuums. Genetische Varianten sind wichtige Determinanten der kindlichen Asthma- und Virusinfektionsanfälligkeit . Aber auch äußere Faktoren wie Infektionen, Rauchen oder Umweltgifte können das Immunsystem des Lungengewebes prägen. Neuste Studien zeigen, dass auch dem Lungenmikrobiom eine bedeutende Rolle bei der Regulierung und Aktivität des Lungenimmunsystems zukommt. Das Lungenmikrobiom wurde spät entdeckt, da man lange Zeit davon ausging, dass die Lunge eine pathogenfreie, sterile Umgebung darstellt. In diesem Projekt soll der Einfluss der Lungemikrobioms auf die Schwere einer SARS-CoV-2 Infektion untersucht werden.

Funding: DFG-Deutsche Forschungsgemeinschaft, 210.700 EUR

Project Details:
Marine mammals are infected by a variety of endo- and ectoparasites which face multiple challenges when having to attach to their host. Arthropod parasites of marine mammals have developed specialized anatomical adaptations, to secure their hold on aquatic hosts, and sophisticated strategies, to enable transmission between vagile pelagic and amphibious wildlife. We have chosen three arthropod species that have adapted differently to their marine hosts: seal lice, as hematophagous insects of terrestrial origin and whale lice, as amphipod crustaceans of marine origin, as well as respiratory mites from the airways of seals. All three species have motile larvae that are transmitted during bodily contact of host individuals. Their exoskeleton has evolved by adapting materials and design to survive on gregarious and diving marine mammals. Little is known about biology of marine mammal arthropod parasites, but even less about physical aspects of their life in this challenging environment. Novel approaches are required to provide more insight in structural design and mechanical properties and knowledge on physical principles of their attachment and locomotion. State of the art instrumentation, such as micro-CT, confocal laser scanning microscopy and Cryo-SEM will provide basic knowledge on morphological adaptations of parasites that enable their attachment to hosts during dives, haul-out and how they endure currents and social interactions. The locomotive abilities of the different life cycle stages on various surfaces and developed features of insect, crustacean and arachnid species are compared to understand functional morphology of their locomotory system. Parasites reduce the fitness of their host most obviously at the interface between parasite and host. Whale lice impede healing processes of skin wounds and seal lice are vectors for filarial and viral diseases. We will investigate the host-parasite interface using histopathology of infected tissues to define the structural damage to host tissues. Friction and adhesion forces maintained by the different parasite species are investigated by custom made microforce testing devices. The envisaged project will provide knowledge on relationships between structure, material properties and attachment performance of attachment devices in selected arthropod parasite species. Data on their locomotion and recruitment dynamics will be studied for the first time and the results will provide new avenues for development of biologically-inspired surfaces and systems specialized for enhancement or reduction of frictional or adhesive forces. New data on the properties of attachment devices in different ontogenetic stages and their role in the life cycle can potentially reveal interesting veterinary aspects.

Results:

Dissertation: Prevalence, adaptation and impact of arthropod parasites on seals in the German North and Baltic Sea

https://nbn-resolving.org/urn:nbn:de:gbv:95-121230

Funding: DFG, 255.550 EUR

Project Details:
Bovine Viral Diarrhea/ Mucosal Disease (BVD/ MD) is an economically important notifiable disease of cattle. The causative agent, BVD virus (BVDV), is a plus strand RNA virus of the family Flaviviridae, genus Pestivirus. BVDV is known to enter oronasally and through the respiratory tract, from where it spreads to various organs and tissues. The initial stage of infection is poorly understood. In the context of preliminary work it was shown that non-differentiated polarized respiratory epithelial cells are highly susceptible to apical and basolateral infection with BVDV, but virus release occurs only via the apical side of the cells. Thus, it remains unknown how pestiviruses cross the barrier of the airway epithelium. However, it is well established that BVDV and other pestiviruses have a strong tropism for immune cells. Therefore, an important goal of this project is to explore the pathway by which BVDV crosses the barrier of the respiratory epithelium and spreads from there to immune cells.
In the first part of the project, the infection of airway epithelial cells (tracheal/bronchial epithelial cells) will be investigated. Two cell culture systems established at the Institute of Virology are available for the analysis of end-differentiated cells: Air-liquid-interface (ALI) cultures and precision lung slices (PCLS). Subsequently, cells that have not yet completed differentiation or cells that are in the regeneration phase after epithelial injury will be examined. Finally, we will analyze whether BVDV can overcome the epithelial barrier in a paracellular manner by exploiting leaky junctions between cells. To find out whether the different infection characteristics in the different culture systems and under the various infection conditions depending on the degree of differentiation can be correlated or explained with the presence of the cellular receptor, the expression of the receptor for BVDV, CD46, will be analyzed. For the detection of CD46 a monoclonal antibody is available, which was produced at the Institute of Virology. Another focus will be studies on the infection of macrophages. Co-cultures of macrophages and airway epithelial cells will be established to find out whether macrophage infection can be used to overcome the epithelial barrier.
Other interesting perspectives for future projects include the role of cellular innate immunity for respiratory epithelial infection with BVDV, and viral-viral or viral-bacterial co-infections.

Funding: EU, 215.581 EUR

Project Details:
The project is carried out at DIL e.V., Quakenbrück.
The DIL leads the work package that focuses on optimising and up-scaling ultrasound (US). Firstly, an extensive literature review on microbial decontamination by US in food and model systems was conducted. It was found that manothermosonication (MTS), a technology that combines mild thermal treatment, elevated pressure, and sonication, is the most promising approach and a potential alternative to traditional thermal pasteurisation of liquid whole egg. Consequently, the DIL developed an MTS prototype that can be used for experimental work with Salmonella Enteritidis. The results showed that MTS can provide the same level of food safety as conventional pasteurisation but with a lower thermal load, suggesting potential food quality benefits confirmed by work on physico-chemical, functional, and protein properties. In addition, sustainability studies using the life cycle analysis (LCA) methodology revealed a lower energy demand in MTS pasteurisation. As a final part of the project, a computational fluid dynamics simulation will be performed to design industrial MTS treatments for continuous application.

Cooperation Partners:

External cooperation partners:

Wageningen University, L-Università ta' Malta,

University of Reading,

Elea Vertriebs- und Vermarktungsgesellschaft mbH,

Leibniz Institut für Plasmaforschung und Technologie e.V.,

Sociedade de Estudos de Analise Sensorial a Produtos Alimentares,

Stichting Wageningen Research,

Hyperbaric,

Arla Foods,

Unilever Research and Development Vlaardingen BV,

Koninklijke Euroma BV,

Société des Produits Nestlé S.A.

Funding: BMEL, ERA-NET, 117.043 EUR

Project Details:
The project is carried out on DIL e.V., Quakenbrück.
With CLIMAQUA an innovative process for the conversion and recycling of aquaculture side streams to feed based on A. platensis is created, which in turn can be used in aquaculture. The aim is to significantly reduce the high greenhouse gas emissions from aquaculture, especially for feed production, by integrating A. platensis into biomass / feed production. Geographical and site-specific features (temperature, length of daylight, etc.) are taken into account in order to obtain an almost completely digestible algae-based feed for salmon and catfish farming and thereby establish a circulatory system that is economically and ecologically sound. In addition, CLIMAQUA examines climate change-related aspects of aquaculture in two regions of the world: The use of innovative technologies in aquaculture is adapted to the climatic conditions and promotes the implementation of sustainable and local food systems.

Project Details:
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Funding: Nordic Research Council (NRC), 49.000 EUR

Project Details:
The retreat of sea ice and the melting and retreat of tidewater glaciers are particularly visible signs of the changes taking place in the Arctic due to global warming. The deterioration of these two physical features of Arctic marine systems is occurring faster in the northern Barents Sea than elsewhere in the circumpolar Arctic, making the Norwegian High Arctic an indicator of climate change in the Arctic region as a whole. The changes will undoubtedly have profound effects on marine ecosystems in the High Arctic and consequences for endemic Arctic marine mammal species.
The ARK research programme will use a variety of data time series (occurrence, ecology, diet, contaminant levels, health parameters, infectious diseases, trophic interactions, etc.) to quantitatively assess different hypotheses on climate change impacts on Arctic marine mammals: 1) Habitat decline will lead to declines in ice-dependent species, changes in distribution patterns and, in the long term, species extinction. 2) Endemic species will increasingly compete with temperate species, which are expanding their habitats. 3) Exposure to new pathogens and increased levels of pollutants will have a negative impact on endemic species. 4) Atlantification of food webs will negatively impact Arctic species and affect the entire Arctic ecosystem.
Within the ARK project, the Kongsfjord, on the west coast of Spitsbergen, will be used in a case-study approach to investigate changes in the ecosystem, apply physical-biochemical food web models and complex risk analyses to make predictions and provide management information.

Results:

Schick, L. A., K. M. Kovacs, C. Lydersen, et al. 2026. " Sharing Is Caring?—Pathogens and Pathogen-Specific Antibodies in Arctic Endemic Seal Species and the Newly Sympatric Harbor Seals in Kongsfjorden, Svalbard." Marine Mammal Science 42, no. 2: e70143

https://doi.org/10.1111/mms.70143

Cooperation Partners:

Kooperationsprojekt mit dem Norwegian Polar Institute, Tromsø

Funding: Interdisciplinary Center for Clinical Research (IZKF) of the University Hospital Erlangen

Project Details:
To investigate the impact of chronic colitis on the behavioral phenotype of mice expressing human α-synuclein under the Thy1-promoter(Thy1-αSyn mice), a well-established mouse model for synucleinopathies.

Cooperation Partners:

Dr.med. Patrick Süß, Prof. Dr. Jürgen Winkler (Dept of Molecular Neurology, Universitätsklinikum Erlangen)

Project Details:
Cognitive dysfunction is characteristic to the prodromal stages of Parkinson´s disease, and more generally to synucleinopathies. We test novel therapeutic options for cognitive dysfunction associated with alpha-synuclein pathology. We base our interest on microRNAs (miRNAs) which are small endogenous RNAs, and will test the hypotheses that specific miRNAs that are downregulated in PD brains are associated with cognitive dysfunction and, when delivered into the diseased brain, can form the basis for miRNA replacement therapy.

Cooperation Partners:

Prof. Eran Hornstein (Weizmann Institute, Israel); Prof. Achim Aigner (Klinische Pharmakologie, Universität Leipzig)

Funding: MWK über Uni Göttingen, 732.193 EUR

Project Details:
Das SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus-Type 2) ist der Erreger von COVID-19. Der bisherige Verlauf der COVID-19 Pandemie hat nachdrücklich gezeigt, dass eine koordinierte Bündelung von interdisziplinären und komplementären Expertisen notwendig ist, um die vielfältigen Aspekte der Biologie, der Pathologie und der Epidemiologie von SARS-CoV-2 zu entschlüsseln und die gewonnenen Erkenntnisse sowohl klinisch für die Behandlung von Patienteninnen und Patienten als auch für die Modellierung von Infektionsverläufen in der Bevölkerung einzusetzen. Um einen solch holistischen Ansatz leisten und umsetzen zu können, bietet das Bundesland Niedersachsen mit seinen international renommierten Wissenschaftsstandorten ideale Voraussetzungen. Das Forschungsnetzwerk COFONI arbeitet am Aufbau eines COVID-19 Forschungsnetzwerkes des Landes Niedersachsen (COFONI)um gebündelt Forschungsvorhaben zur Entwicklung neuer Strategien zur Bekämpfung von COVID-19 zu entwickeln. Hauptfokus der Technologieplattform Tiermodelle ist der Aufbau von Tiermodellen für COVID-19.