PMID- 18444086 OWN - NLM STAT- MEDLINE DCOM- 20080708 LR - 20211020 IS - 1538-2443 (Electronic) IS - 1355-0284 (Linking) VI - 14 IP - 2 DP - 2008 Apr TI - Lack of immune responses against multiple sclerosis-associated retrovirus/human endogenous retrovirus W in patients with multiple sclerosis. PG - 143-51 LID - 10.1080/13550280801958922 [doi] AB - The multiple sclerosis-associated retrovirus (MSRV), originally identified in cell cultures from patients with multiple sclerosis (MS), is closely related to the human endogenous retrovirus family type W (HERV-W). Different lines of evidence appear compatible with a potential role of MSRV/HERV-W in the pathogenesis of MS. The authors therefore analyzed humoral and cellular immune responses against MSRV/HERV-W antigens in patients with MS, patients with other inflammatory and noninflammatory neurological diseases, and healthy controls, using indirect immunofluorescence and enzyme-linked immunospot assays. Antibodies against the HERV-W envelope (Env) protein, Syncytin-1, were found in one of 50 patients with MS and none of 59 controls, whereas antibodies against MSRV matrix and capsid (Gag) or Env proteins were not detectable in any of the patients or controls. Similarly, in a screening of human leukocyte antigen (HLA)-B7+ patients with MS (n = 23) and controls (n = 29) for cytotoxic T-lymphocyte responses against 36 predicted HLA-B7-restricted MSRV/HERV-W Gag-, protease-, and reverse transcriptase-derived peptides, no such responses could be detected in any of the subjects studied. These data suggest that there are no appreciable humoral or cellular immune responses against MSRV/HERV-W in patients with MS. While this may be due to immunological tolerance of physiologically expressed HERV-W proteins, strategies other than measurement of immune responses will be required to further elucidate the relationship between MSRV/HERV-W and MS. FAU - Ruprecht, Klemens AU - Ruprecht K AD - Institute for Virology, Saarland University Hospital, Homburg/Saar, Germany. klemens.ruprecht@uniklinikum-saarland.de FAU - Gronen, Felix AU - Gronen F FAU - Sauter, Marlies AU - Sauter M FAU - Best, Barbara AU - Best B FAU - Rieckmann, Peter AU - Rieckmann P FAU - Mueller-Lantzsch, Nikolaus AU - Mueller-Lantzsch N LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Neurovirol JT - Journal of neurovirology JID - 9508123 RN - 0 (Antibodies, Viral) RN - 0 (Cytokines) RN - 0 (Gene Products, env) RN - 0 (Pregnancy Proteins) RN - 0 (syncytin) SB - IM MH - Antibodies, Viral/*analysis MH - Cohort Studies MH - Cytokines/*biosynthesis MH - Endogenous Retroviruses/*immunology MH - Gene Products, env/metabolism MH - Humans MH - Multiple Sclerosis/blood/*immunology/*virology MH - Pregnancy Proteins/metabolism EDAT- 2008/04/30 09:00 MHDA- 2008/07/09 09:00 CRDT- 2008/04/30 09:00 PHST- 2008/04/30 09:00 [pubmed] PHST- 2008/07/09 09:00 [medline] PHST- 2008/04/30 09:00 [entrez] AID - 792702467 [pii] AID - 10.1080/13550280801958922 [doi] PST - ppublish SO - J Neurovirol. 2008 Apr;14(2):143-51. doi: 10.1080/13550280801958922.