Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Young killer cells protect against infectious mononucleosis

19.12.2013
Most people are carriers of the Epstein-Barr Virus, which can trigger infectious mononucleosis. Those who become infected as adults are more at risk of becoming ill from it.

By contrast, children who become infected are protected by their innate immune system. This is because young «natural killer cells» fight off infectious mononucleosis, as immunologists from the University of Zurich have now shown. The researchers are now testing vaccinations that could protect young people from the illness.

More than 90 percent of all adults are carriers of the oncogenic Epstein-Barr Virus (EBV). Primary infection with this herpes virus as a young child is generally not linked to any symptoms, and usually offers life-long protection from its cancer-causing effect. However, for people who do not become infected with the virus until adolescence, the infection often leads to infectious mononucleosis (commonly known as glandular fever). Our immune systems can generally fend off this disease after a period of between one and several months. However, there is an increased risk of developing Hodgkin lymphoma at a later stage, a cancerous tumor of the lymphatic system. Immunologists from the University of Zurich have now discovered a risk factor that is in part responsible for the outbreak of infectious mononucleosis in young people.

Young natural killer cells combat primary infection

The researchers used an animal model to show that the loss of innate immune control by young natural killer cells can lead to infectious mononucleosis. “Young natural killer cells, which small children in particular have in abundance, seem to be especially suited to killing off the cells that multiply EBV”, according to Christian Münz, Professor of Experimental Immunology at the University of Zurich. “This weakens the primary infection and infectious mononucleosis does not break out”.

Without the defense of the natural killer cells, EBV multiplies so dramatically during the primary infection phase that the aggressive response of the adaptive immune system – chiefly of the T killer cells – makes the infected person sick with infectious mononucleosis. “In the animal model we also observed weight loss and the increased occurrence of EBV-associated lymphomas. Consequently, natural killer cells seem to play a key role in the development of the primary infection with Epstein-Barr Virus”. This is how Christian Münz explains the results of the study.

Young people could benefit from a vaccination

Adolescents who are not yet carriers of EBV are at an increased risk of developing infectious mononucleosis. Christian Münz’s work group is currently examining vaccinations that could protect against EBV infection. This could prevent the outbreak of infectious mononucleosis and reduce the related risk of developing Hodgkin lymphoma.

Literature:

Obinna Chijioke, Anne Müller, Regina Feederle, Mario Henrique M. Barros, Carsten Krieg, Vanessa Emmel, Emanuela Marcenaro, Carol S. Leung, Olga Antsiferova, Vanessa Landtwing, Walter Bossart, Alessandro Moretta, Rocio Hassan, Onur Boyman, Gerald Niedobitek, Henri-Jacques Delecluse, Riccarda Capaul and Christian Münz. Human Natural Killer Cells Prevent Infectious Mononucleosis Features by Targeting Lytic Epstein-Barr Virus Infection. Cell Reports. December 19, 2013. Doi: 10.1016/

Nathalie Huber | Universität Zürich
Further information:
http://www.uzh.ch/

More articles from Life Sciences:

nachricht The world's tiniest first responders
21.06.2018 | University of Southern California

nachricht A new toxin in Cholera bacteria discovered by scientists in Umeå
21.06.2018 | Schwedischer Forschungsrat - The Swedish Research Council

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Better model of water under extreme conditions could aid understanding of Earth's mantle

21.06.2018 | Earth Sciences

What are the effects of coral reef marine protected areas?

21.06.2018 | Life Sciences

The Janus head of the South Asian monsoon

21.06.2018 | Earth Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>