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NEUROLOGY 2007;68:1815-1819
© 2007 American Academy of Neurology

Measles virus–specific plasma cells are prominent in subacute sclerosing panencephalitis CSF

G. P. Owens, PhD, A. M. Ritchie, D. H. Gilden, MD, M. P. Burgoon, PhD, D. Becker, MD and J. L. Bennett, MD, PhD

From the Departments of Neurology (G.P.O., A.M.R., D.H.G. M.P.B. J.L.B.), Microbiology (D.H.G.), and Ophthalmology (J.L.B.), University of Colorado Health Sciences Center, Denver, and Department of Neurology (D.B.), Vanderbilt University Medical Center, Nashville, TN.

Address correspondence and reprint requests to Dr Owens, Department of Neurology, University of Colorado Health Sciences Center, 4200 E. 9 Ave., Mail Stop B182, Denver, CO 80262 greg.owens{at}uchsc.edu

Objective: To demonstrate the specificity of expanded CD138+ plasma cell clones recovered from the CSF of a patient with subacute sclerosing panencephalitis (SSPE) for measles virus (MV).

Methods: IgG variable region sequences of single-antibody-secreting CD138+ cells sorted from SSPE CSF were amplified by single-cell PCR and analyzed. Human IgG1 recombinant antibodies (rAbs) were produced from four expanded CD138+ clones and assayed for immunoreactivity against MV proteins.

Results: Clonal expansion was a prominent feature of the SSPE plasma cell repertoire, and each of the four rAbs assayed was specific for either the MV fusion or the MV nucleocapsid protein.

Conclusions: Expanded plasma cell clones in the CSF of patients with subacute sclerosing panencephalitis produce disease-relevant antibodies. Recombinant antibodies derived from CSF B cells could provide a tool to identify target antigens in idiopathic inflammatory disorders.

Received September 15, 2006. Accepted in final form January 22, 2007.






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