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Home NEWS Science News Health

Salmonella could be combated by enhancing body’s natural process

Bioengineer by Bioengineer
March 26, 2019
in Health
Reading Time: 3 mins read
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Credit: Dr. Anne-Claire Jacomin/University of Warwick

Autophagy – the process of recycling cellular material in the body, can help combat Salmonella and other pathogens according to researchers at the School of Life Sciences, University of Warwick who have studied how autophagy can get rid of bacteria, and prevent diseases developing.

An interdisciplinary team of researchers led by Dr Ioannis Nezis from the School of Life Sciences, University of Warwick, and Dr Tamas Korscmaros from Earlham Institute and Quadram Institute, Norwich, UK screened the proteome from 56 pathogenic bacterial species – to see how autophagy reacts with them.

Some of the 56 species screened included Salmonella, Shigella, Listeria, Mycobacterium tuberculosis and Staphylococcus. They identified how host cells use autophagy to clear invading bacteria, but also how bacteria use their proteins to escape this clearance.

They found that host cells use autophagy to target specific bacterial proteins for recycling. These bacterial proteins could be used by the bacteria to help them escape their clearance.

Salmonella is a food born pathogenic bacterium and it is the second most common cause of childhood mortality in the developing world. Understanding how host cells sense and combat Salmonella infection would lead to new therapies. They identified Salmonella YhjJ protein which interacts with autophagy protein LC3 and can cleave other autophagy proteins to inhibit their function.

Dr Ioannis Nezis commented:
“Our systems-level analysis has highlighted the complex interplay between host autophagy and bacteria to inspire future experimental studies to elucidate the detailed molecular mechanisms of autophagy in the pathogenesis of bacterial infections.

“With drug resistance being on the rise worldwide, bacterial infections pose one of the greatest global threats to human health. Using activators of autophagy with antibiotics, as antibiotic resistance breakers, would be a very promising way to fight bacterial infections”

Research can now look at identifying natural products that can boost autophagy and decrease the likelihood of developing infections as well as treating them.

###

For previous research of Nezis’ group (see https://warwick.ac.uk/newsandevents/pressreleases/colon_cancer_breakthrough )

The paper, ‘Targeted interplay between bacterial pathogens and host autophagy.’ by Padhmanand Sudhakar, Anne Claire-Jacomin, Isabelle Hautefort, Siva Samavedam, Koorosh Fatemian, Eszter Ari, Leila Gul, Amanda Demeter, Emily Jones, Tamas Korcsmaros and Ioannis P. Nezis, is published in Autophagy journal on 26 March 2019

It is funded by the Biotechnology and Biological Sciences Research Council.

NOTES TO EDITORS

Paper available to view at: https://www.tandfonline.com/doi/full/10.1080/15548627.2019.1590519

High-res images available at: https://warwick.ac.uk/services/communications/medialibrary/images/march2019/iaonnis_autophagy.jpg

FOR MORE INFORMATION PLEASE CONTACT

Alice Scott, Media Relations Manager, University of Warwick

Tel: 02476 574 255 or 07920 531 221

E-mail: [email protected]

Media Contact
Alice Scott
[email protected]

Original Source

https://warwick.ac.uk/newsandevents/pressreleases/salmonella_could_be

Related Journal Article

http://dx.doi.org/10.1080/15548627.2019.1590519

Tags: Alternative MedicineBacteriologyBiologyCell BiologyHealth Care Systems/ServicesImmunology/Allergies/AsthmaMedical/Scientific EthicsMedicine/HealthNutrition/NutrientsPublic Health
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