PMID- 33348629 OWN - NLM STAT- MEDLINE DCOM- 20210621 LR - 20210621 IS - 2073-4409 (Electronic) IS - 2073-4409 (Linking) VI - 9 IP - 12 DP - 2020 Dec 17 TI - HLA Class II Genotype Does Not Affect the Myelin Responsiveness of Multiple Sclerosis Patients. LID - 10.3390/cells9122703 [doi] LID - 2703 AB - BACKGROUND: When aiming to restore myelin tolerance using antigen-specific treatment approaches in MS, the wide variety of myelin-derived antigens towards which immune responses are targeted in multiple sclerosis (MS) patients needs to be taken into account. Uncertainty remains as to whether the myelin reactivity pattern of a specific MS patient can be predicted based upon the human leukocyte antigen (HLA) class II haplotype of the patient. METHODS: In this study, we analyzed the reactivity towards myelin oligodendrocyte glycoprotein (MOG), myelin basic protein (MBP) and proteolipid protein (PLP) peptides using direct interferon (IFN)-gamma enzyme-linked immune absorbent spot (ELISPOT). Next, the HLA class II haplotype profile was determined by next-generation sequencing. In doing so, we aimed to evaluate the possible association between the precursor frequency of myelin-reactive T cells and the HLA haplotype. RESULTS: Reactivity towards any of the analyzed peptides could be demonstrated in 65.0% (13/20) of MS patients and in 60.0% (6/10) of healthy controls. At least one of the MS risk alleles HLA-DRB1*15:01, HLA-DQA1*01:02 and HLA-DQB1*06:02 was found in 70.0% (14/20) of patients and in 20.0% (2/10) of healthy controls. No difference in the presence of a myelin-specific response, nor in the frequency of myelin peptide-reactive precursor cells could be detected among carriers and non-carriers of these risk alleles. CONCLUSION: No association between HLA haplotype and myelin reactivity profile was present in our study population. This complicates the development of antigen-specific treatment approaches and implies the need for multi-epitope targeting in an HLA-unrestricted manner to fully address the wide variation in myelin responses and HLA profiles in a heterogeneous group of MS patients. FAU - Derdelinckx, Judith AU - Derdelinckx J AUID- ORCID: 0000-0003-0898-1432 AD - Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (VaxInfectio), Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Antwerp, Belgium. AD - Division of Neurology, Antwerp University Hospital, 2650 Edegem, Belgium. FAU - Nkansah, Irene AU - Nkansah I AD - Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (VaxInfectio), Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Antwerp, Belgium. FAU - Ooms, Naomi AU - Ooms N AD - Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (VaxInfectio), Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Antwerp, Belgium. FAU - Van Bruggen, Laura AU - Van Bruggen L AD - Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (VaxInfectio), Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Antwerp, Belgium. FAU - Emonds, Marie-Paule AU - Emonds MP AUID- ORCID: 0000-0002-2653-8656 AD - Histocompatibility and Immunogenetics Laboratory, Red Cross-Flanders, 2650 Mechelen, Belgium. FAU - Daniels, Liesbeth AU - Daniels L AD - Histocompatibility and Immunogenetics Laboratory, Red Cross-Flanders, 2650 Mechelen, Belgium. FAU - Reynders, Tatjana AU - Reynders T AUID- ORCID: 0000-0002-9263-0012 AD - Division of Neurology, Antwerp University Hospital, 2650 Edegem, Belgium. FAU - Willekens, Barbara AU - Willekens B AUID- ORCID: 0000-0002-5212-8837 AD - Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (VaxInfectio), Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Antwerp, Belgium. AD - Division of Neurology, Antwerp University Hospital, 2650 Edegem, Belgium. FAU - Cras, Patrick AU - Cras P AD - Division of Neurology, Antwerp University Hospital, 2650 Edegem, Belgium. AD - Born Bunge Institute, Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Antwerp, Belgium. FAU - Berneman, Zwi N AU - Berneman ZN AD - Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (VaxInfectio), Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Antwerp, Belgium. AD - Center for Cell Therapy and Regenerative Medicine, Antwerp University Hospital, 2650 Edegem, Belgium. FAU - Cools, Nathalie AU - Cools N AD - Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (VaxInfectio), Faculty of Medicine and Health Sciences, University of Antwerp, 2610 Antwerp, Belgium. AD - Center for Cell Therapy and Regenerative Medicine, Antwerp University Hospital, 2650 Edegem, Belgium. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201217 PL - Switzerland TA - Cells JT - Cells JID - 101600052 RN - 0 (HLA Antigens) RN - 0 (HLA-DQ alpha-Chains) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQA1 antigen) RN - 0 (HLA-DQB1 antigen) RN - 0 (MBP protein, human) RN - 0 (Myelin Basic Protein) RN - 0 (Myelin Proteolipid Protein) RN - 0 (Myelin-Oligodendrocyte Glycoprotein) RN - 0 (Peptides) SB - IM MH - Adult MH - Aged MH - Alleles MH - Case-Control Studies MH - Female MH - Genotype MH - HLA Antigens/*genetics MH - HLA-DQ alpha-Chains/genetics MH - HLA-DQ beta-Chains/genetics MH - Haplotypes MH - Humans MH - Leukocytes, Mononuclear/cytology/drug effects/metabolism MH - Male MH - Middle Aged MH - Multiple Sclerosis, Relapsing-Remitting/genetics/*pathology MH - Myelin Basic Protein/chemistry/*metabolism MH - Myelin Proteolipid Protein/chemistry/metabolism MH - Myelin-Oligodendrocyte Glycoprotein/chemistry/metabolism MH - Peptides/pharmacology MH - Young Adult PMC - PMC7766454 OTO - NOTNLM OT - HLA class II genotype OT - antigen-specific treatment OT - multiple sclerosis OT - myelin responsiveness COIS- The authors declare no conflict of interest. EDAT- 2020/12/23 06:00 MHDA- 2021/06/22 06:00 PMCR- 2020/12/17 CRDT- 2020/12/22 01:03 PHST- 2020/11/14 00:00 [received] PHST- 2020/12/07 00:00 [revised] PHST- 2020/12/16 00:00 [accepted] PHST- 2020/12/22 01:03 [entrez] PHST- 2020/12/23 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2020/12/17 00:00 [pmc-release] AID - cells9122703 [pii] AID - cells-09-02703 [pii] AID - 10.3390/cells9122703 [doi] PST - epublish SO - Cells. 2020 Dec 17;9(12):2703. doi: 10.3390/cells9122703.