The human protein Elafin plays a key role against the inflammatory reaction typical of Celiac disease and researchers have developed a probiotic bacterium able to deliver Elafin in the gut of mice.
Celiac disease is an auto-immune pathology that occurs in individuals genetically predisposed to gluten intolerance. Affected people do not harbor the enzymes required to degrade gluten during digestion and inflammatory reactions are induced by this abnormal digestion which can lead to the destruction of the gut barrier that is essential for nutrients absorption.
Celiac disease causes chronic abdominal pain (diarrhea, cramps…) and predisposes to certain cancers (small intestine, lymphoma). Its prevalence is estimated between 1/500 and 1/300; no curative treatment currently exist and the only solution is a lifelong gluten-free diet.
Scientists from the French National Institute for Agricultural Research (INRA) and the French National Institute of Health and Medical Research (INSERM), along with Canadian and Swiss colleagues, have shown that Elafin is less abundant in patients with celiac disease than in healthy people. They identified that Elafin is capable of preventing the destruction of the gut barrier during inflammation, and that Elafin is able to interact with enzymes responsible for the abnormal breakdown of gluten: transglutaminase-2.
Consequently, Elafin reduces gluten toxicity.
These observations led the scientists to propose a way to deliver the missing Elafin in celiac patients with help of a harmless bacterium that is often present in food: a lactic bacterium strain (Lactococcus lactis), that scientists transformed in order to express Elafin.
The use of this strain, developed by the same teams from INRA and INSERM, enables a targeted and local production of Elafin, and represents a recent and innovative strategy. The first pre-clinical results pave the way to new therapies for Inflammatory Bowel Disease or IBD (no curative treatment exist).
In the present study, the scientists have administered this bacterium to gluten intolerant mice. They showed that the Elafin delivered by the probiotic decreases significantly the inflammatory reaction.
This strategy, patented by INRA in May 2013, opens promising prospects to treat celiac disease and gluten intolerance in general. The next step will consist in defining the mechanisms underlying the positive effects of elafin in celiac disease, and in the identification of bacteria that naturally produce proteins with anti-inflammatory properties similar to elafin.
Citation: Heather J. Galipeau, Michelle Wiepjes, Jean-Paul Motta, Jessica D. Schulz, Jennifer Jury, Jane M. Natividad, Ines Pinto-Sanchez, Daniel Sinclair, Perrine Rousset, Rebeca Martin-Rosique, Luis Bermudez-Humaran, Jean Christophe Leroux, Joseph Murray, Edgardo Smecuol, Julio C. Bai, Nathalie Vergnolle, Philippe Langella and Elena F. Verdu, 'Novel Role of the Serine Protease Inhibitor Elafin in Gluten-Related Disorders', American Journal of Gastroenterology, 8 April 2014. DOI : 10.1038/ajg.2014.48
- PHYSICAL SCIENCES
- EARTH SCIENCES
- LIFE SCIENCES
- SOCIAL SCIENCES
Subscribe to the newsletter
Stay in touch with the scientific world!
Know Science And Want To Write?
- Part I: Bee Deaths Mystery Solved? Neonicotinoids (Neonics) May Actually Help Bee Health
- Education: Stop New Age Thinking, Chalk And Talk Might Be The Best Way After All
- Big Data Could Be A Big Problem For Workplace Discrimination Law
- Interstellar Is A Dangerous Fantasy Of US Colonialism
- Reasons Serious Scientist Should Not Fear The Winnower and other OA Open Review Journals.
- The BPA Paradox – Too Many Studies?
- 3X Saturated Fat In The Diet Doesn't Increase It In Blood
- "thanks to the information provided, it adds insight for us and add more extensive knowledge obat..."
- "thanks to the information provided, it adds insight for us and add more extensive knowledge http..."
- "Intriguing article. Science fiction at its best, but who knows what my grandchildren's grandchildren..."
- "I haven't seen the film yet, but I think this review is trying to make a big ol' mountain where..."
- "Are you a Neurologist? Why should anyone believe you? What are your credentials? I think it's pretty..."
- Adult survivors of childhood eye cancer experience few cognitive or social setbacks
- Healthy gut microbiota can prevent metabolic syndrome, researchers say
- Schizophrenia may be triggered by excess protein during brain development
- The sound of status: People know high-power voices when they hear them
- Mutant protein takes babies' breath away
Books By Writers Here