Abstract
Short-chain fatty acids are processed from indigestible dietary fibers by gut bacteria and have immunomodulatory properties. Here, we investigate propionic acid (PA) in multiple sclerosis (MS), an autoimmune and neurodegenerative disease. Serum and feces of subjects with MS exhibited significantly reduced PA amounts compared with controls, particularly after the first relapse. In a proof-of-concept study, we supplemented PA to therapy-naive MS patients and as an add-on to MS immunotherapy. After 2 weeks of PA intake, we observed a significant and sustained increase of functionally competent regulatory T (Treg) cells, whereas Th1 and Th17 cells decreased significantly. Post-hoc analyses revealed a reduced annual relapse rate, disability stabilization, and reduced brain atrophy after 3 years of PA intake. Functional microbiome analysis revealed increased expression of Treg-cell-inducing genes in the intestine after PA intake. Furthermore, PA normalized Treg cell mitochondrial function and morphology in MS. Our findings suggest that PA can serve as a potent immunomodulatory supplement to MS drugs.
| Original language | English |
|---|---|
| Pages (from-to) | 1067-1080.e16 |
| Journal | Cell |
| Volume | 180 |
| Issue number | 6 |
| DOIs | |
| State | Published - 19 Mar 2020 |
Bibliographical note
Publisher Copyright:© 2020 Elsevier Inc.
Funding
The study was funded by SFB TR128 (Deutsche Forschungsgemeinschaft), the DMSG (Deutsche MS Gesellschaft in NRW), FoRUM (Ruhr-University Bochum), the Rose-Stiftung, ProDi (Proteindiagnostik RUB), the Ministerium für Kultur und Wissenschaft des Landes Nordrhein-Westfalen, the Regierende Bürgermeister von Berlin – inkl. Wissenschaft und Forschung, and the Bundesministerium für Bildung und Forschung. Statistical analyses and gene expression data were supported by the German Network for Bioinformatics Infrastructure (Karin Schork) – de.NBI, Service Center BioInfra.Prot, a project of the German Federal Ministry of Education and Research (BMBF) (FKZ 031 A 534A). D.N.M. is supported by the DZHK and the DFG (SFB 1365). K.F.W. is supported by the German Research Foundation (DFG, Research Unit 2848). SR-SIM microscopy was funded by the German Research Foundation and the State Government of North Rhine-Westphalia (INST 213/840-1 FUGG). We thank Anna Lena Fisse, Miriam Fels, Christoph Schröder, Katrin Straßburger-Krogias, Laura Tomaske, Daniel Richter, and Janina Kneiphof for identifying subjects with MS of interest for this study. Conceptualization, A.D. B.G. S. Hirschberg, N.Y. R.A.L. R.G. and A.H.; Formal Analysis, A.D. S. Hirschberg, N.Y. M.S. S.K.F. and A.H.; Funding Acquisition, R.G. and A.H.; Investigation, A.D. B.G. S. Hirschberg, N.Y. E.E. V.B. S. Haase, J.K. C.D. R.S. R.T. D.Z. T.H. N.D. S.G. S.D.M.-R. O.S. S.A. K.S. F.H. A.B. S.K. P.T. M.M.Z. J.B.H. H.B.N. C.L. S.G.G. G.P. and A.H.;, Methodology, A.D. V.B. E.E. N.Y. and A.H.; Project Administration, N.Y. A.F. H.P. R.A.L. D.N.M. M.P. R.G. and A.H.; Supervision, N.Y. G.I.S. K.F.W. and A.H.; Visualization, A.D. S. Hirschberg, N.Y. V.B. and A.H.; Writing – Original Draft, A.D. B.G. S. Hirschberg, N.Y. R.S. S.K.F. and A.H.; Writing – Review & Editing, A.D. B.G. S. Hirschberg, N.Y. J.K. R.S. M.G.M. M.S. S.K.F. R.A.L. R.G. and A.H. R.G. and A.H. have filed a patent on the supportive immunomodulatory effect of C3-C8 aliphatic fatty acids. The study was funded by SFB TR128 ( Deutsche Forschungsgemeinschaft ), the DMSG (Deutsche MS Gesellschaft in NRW), FoRUM (Ruhr-University Bochum), the Rose-Stiftung, ProDi (Proteindiagnostik RUB), the Ministerium für Kultur und Wissenschaft des Landes Nordrhein-Westfalen , the Regierende Bürgermeister von Berlin – inkl. Wissenschaft und Forschung , and the Bundesministerium für Bildung und Forschung . Statistical analyses and gene expression data were supported by the German Network for Bioinformatics Infrastructure (Karin Schork) – de.NBI , Service Center BioInfra.Prot , a project of the German Federal Ministry of Education and Research (BMBF) ( FKZ 031 A 534A ). D.N.M. is supported by the DZHK and the DFG ( SFB 1365 ). K.F.W. is supported by the German Research Foundation (DFG, Research Unit 2848 ). SR-SIM microscopy was funded by the German Research Foundation and the State Government of North Rhine-Westphalia ( INST 213/840-1 FUGG ). We thank Anna Lena Fisse, Miriam Fels, Christoph Schröder, Katrin Straßburger-Krogias, Laura Tomaske, Daniel Richter, and Janina Kneiphof for identifying subjects with MS of interest for this study.
| Funders | Funder number |
|---|---|
| Deutsche MS Gesellschaft | |
| Rose-Stiftung | |
| State Government of North Rhine-Westphalia | INST 213/840-1 FUGG |
| Wissenschaft und Forschung | |
| Deutsches Zentrum für Herz-Kreislaufforschung | |
| FORUM Pharmaceuticals | |
| Deutsche Forschungsgemeinschaft | SFB 1365 |
| Bundesministerium für Bildung und Forschung | FKZ 031 A 534A |
| Ruhr-Universität Bochum | |
| Deutschen Multiple Sklerose Gesellschaft | |
| Ministerium für Kultur und Wissenschaft des Landes Nordrhein-Westfalen | |
| German Network for Bioinformatics Infrastructure |
Keywords
- autoimmune diseases
- immune modulation
- microbiome
- multiple sclerosis
- neuroregeneration
- propionic acid
- regulatory T cells
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