Research News

Dealing with sugar withdrawal

10. 1. 2018 | If a cell encounters a stress situation, it reacts immediately to ensure its survival. AcademiaNet member Prof Anne Spang and her research group at the Biozentrum of the University of Basel have investigated how a shortage of sugars affects vital processes in the cell. Their work has now unearthed a new survival factor, called Puf5p.
Professor Anne Spang
Bild vergrößern
(© Anne Spang)


Professor Anne Spang

Prof Spang and her team used yeast as a model organism to investigate which processes are activated when a cell has to deal with sugar restriction. They then compared these with the response to other stress situations. It turned out that P-bodies - small cellular organelles – increase the storage of so-called mitochondrial mRNAs when experiencing sugar shortage. As mobile carriers of genetic information in the cells, mRNAs are templates for the production of vital proteins. The products of the mitochondrial mRNAs initiate an adaptation of the energy metabolism process in the power stations of the cells: the mitochondria. “This is the only way to ensure the continued survival of the cell,” explains Spang. Simultaneously, all the mRNAs that are not necessary to master the deficiency situation are degraded in the P-bodies. Until now, it was assumed that P-bodies only played a role in the degradation of mRNAs.


Furthermore, the researchers were able to identify the decision-maker responsible for this selection: “We demonstrated that the protein Puf5p primarily decides over the fate of the individual mRNA and transports it to the site where this is carried out, the P-bodies,” reports Spang. Their results have been published in the open access journal eLife.


Numerous earlier scientific investigations have shown that certain stresses, in particular nutrient restriction, can positively impact on the life expectancy of cells. Even animals, such as mice, live longer when they eat less. The investigations carried out by Spang provide yet another building block in the more detailed understanding of the processes underlying an increase in lifespan. “It is also the P-body storage of mRNAs during sugar deficiency that proves to be of benefit to the lifespan of the cell,” says Spang.


  (© Heike Sacher (University of Basel) / AcademiaNet)

More information

Testimonials

  1. Read what our members say about AcademiaNet.

No more excuses!

  1. Please download the brochure "No more excuses" and read more about female experts in Europe, and about AcademiaNet.

News

  1. Tais Gorkhover wins LCLS Young Investigator Award for pioneering novel X-ray imaging methods

    The early-career award honours AcademiaNet member and promising leader in X-ray free-electron laser research

  2. World’s Largest Computing Association Appoints First Woman CEO

    ACM President Vicki L. Hanson takes top staff position

  3. Pulsar discoverer Jocelyn Bell Burnell wins $3-million Breakthrough Prize

    AcademiaNet member plans to spend prize money — awarded 50 years after the discovery — on increasing diversity in science. A portrait by Nature

  4. Plant-based molecules company wins EU’s women innovators prize

    Dr Gabriella Colucci, the founder of two biotechnology companies that discover new plant-based molecules for industrial use, has won the top award of €100,000 in the 2018 EU Prize for Women Innovators, which was presented at a ceremony in Brussels, Belgium on 21 June.

  5. An imperative to communicate

    As part of a series on »Science Communication« in the European Research Council Magazine, Dame Athene Donald, member of the ERC's Scientific Council, gives her views on the joys of finding your voice and the political impact of doing so.