Department of Neurology, Henry Ford Health System, E&R Building, Room 4051, Detroit, MI, 48202, USA.
Center for Bioinformatics, Henry Ford Health System, Detroit, MI, 48202, USA.
J Neuroimmune Pharmacol. 2019 Jun;14(2):241-250. doi: 10.1007/s11481-018-9815-4. Epub 2018 Oct 12.
Identification of non-invasive biomarkers of disease progression in multiple sclerosis (MS) is critically needed for monitoring the disease progression and for effective therapeutic interventions. Urine is an attractive source for non-invasive biomarkers because it is easily obtained in the clinic. In search of a urine metabolite signature of progression in chronic experimental autoimmune encephalomyelitis (EAE), we profiled urine at the chronic stage of the disease (day 45 post immunization) by global untargeted metabolomics. Using a combination of high-throughput liquid-and-gas chromatography with mass spectrometry, we found 105 metabolites (P < 0.05) significantly altered at the chronic stage, indicating a robust alteration in the urine metabolite profile during disease. Assessment of altered metabolites against the Kyoto Encyclopedia of Genes and Genomes revealed distinct non-overlapping metabolic pathways and revealed phenylalanine-tyrosine and associated metabolism being the most impacted. Combined with previously performed plasma profiling, eight common metabolites were significantly altered in both of the biofluids. Metaboanalyst analysis of these common metabolites revealed that phenylalanine metabolism and Valine, leucine, and isoleucine biosynthetic pathways are central metabolic pathways in both bio-fluids and could be analyzed further, either for the discovery of therapeutics or biomarker development. Overall, our study suggests that urine and plasma metabolomics may contribute to the identification of a distinct metabolic fingerprint of EAE disease discriminating from the healthy control which may aid in the development of an objective non-invasive monitoring method for progressive autoimmune diseases like MS. Graphical Abstract Untargeted urinary metabolomics of a chronic mouse model of multiple sclerosis identified Phenylalanine, tyrosine & tryptophan metabolism as the significantly altered metabolic pathway. Eight common metabolites were identified when we combined urinary and plasma metabolic signature, which revealed a perturbation of Phenylalanine metabolism and valine, leucine & isoleucine metabolic pathways, involved in CNS dysfunction during diseases. The identified eight metabolic signature of urine and plasma may be of clinical relevance as potential biomarkers and guide towards the identification of specific metabolic pathways as novel drug targets.
在多发性硬化症(MS)中,识别疾病进展的非侵入性生物标志物对于监测疾病进展和进行有效的治疗干预至关重要。尿液是一种很有吸引力的非侵入性生物标志物来源,因为它在临床上很容易获得。为了寻找慢性实验性自身免疫性脑脊髓炎(EAE)进展的尿液代谢标志物特征,我们通过全球非靶向代谢组学对疾病的慢性阶段(免疫后第 45 天)的尿液进行了分析。我们使用高通量液质联用技术,发现了 105 种代谢物(P<0.05)在慢性阶段发生了显著改变,表明疾病期间尿液代谢谱发生了明显改变。对京都基因与基因组百科全书(KEGG)中的改变代谢物进行评估,揭示了不同的非重叠代谢途径,并表明苯丙氨酸-酪氨酸及其相关代谢物受到的影响最大。结合之前进行的血浆分析,两种生物流体中都有 8 种常见代谢物发生了显著改变。对这些常见代谢物进行代谢分析表明,苯丙氨酸代谢和缬氨酸、亮氨酸和异亮氨酸生物合成途径是两种生物流体中的核心代谢途径,可以进一步分析,无论是为了发现治疗方法还是生物标志物的开发。总的来说,我们的研究表明,尿液和血浆代谢组学可能有助于确定 EAE 疾病的独特代谢特征,与健康对照区分开来,这可能有助于开发用于 MS 等进行性自身免疫性疾病的客观非侵入性监测方法。
J Neuroimmune Pharmacol. 2018-10-12
J Cancer Res Clin Oncol. 2024-10-23
Mol Neurobiol. 2024-10
Int J Mol Sci. 2022-9-4
Proc Natl Acad Sci U S A. 2022-6-21
J Neurosci Res. 2018-2-15
JCI Insight. 2017-10-5
Int J Mol Sci. 2017-9-15
Neurol Neuroimmunol Neuroinflamm. 2017-1-27
J Neuroimmunol. 2017-3-15
Cell Death Differ. 2016-11-1