Peptide Antibody Reactivity to Homologous Regions in Glutamate Decarboxylase Isoforms and Coxsackievirus B4 P2C
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Peptide Antibody Reactivity to Homologous Regions in Glutamate Decarboxylase Isoforms and Coxsackievirus B4 P2C. / Trier, Nicole Hartwig; Valdarnini, Niccolo; Fanelli, Ilaria; Rovero, Paolo; Hansen, Paul Robert; Schafer, Claus; Ciplys, Evaldas ; Slibinskas, Rimantas; Pociot, Flemming; Friis, Tina ; Houen, Gunnar .
I: International Journal of Molecular Sciences, Bind 23, Nr. 8, 4424, 2022.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Peptide Antibody Reactivity to Homologous Regions in Glutamate Decarboxylase Isoforms and Coxsackievirus B4 P2C
AU - Trier, Nicole Hartwig
AU - Valdarnini, Niccolo
AU - Fanelli, Ilaria
AU - Rovero, Paolo
AU - Hansen, Paul Robert
AU - Schafer, Claus
AU - Ciplys, Evaldas
AU - Slibinskas, Rimantas
AU - Pociot, Flemming
AU - Friis, Tina
AU - Houen, Gunnar
PY - 2022
Y1 - 2022
N2 - Two isoforms of the glutamate decarboxylase (GAD) enzyme exist, GAD65 and GAD67, which are associated with type 1 diabetes (T1D) and stiff-person syndrome (SPS), respectively. Interestingly, it has been reported that T1D patients seldom develop SPS, whereas patients with SPS occasionally develop T1D. In addition, coxsackievirus B4 (CVB4) has previously been proposed to be involved in the onset of T1D through molecular mimicry. On this basis, we aimed to examine antibody cross-reactivity between a specific region of GAD65 and GAD67, which has high sequence homology to the nonstructural P2C protein of CVB4 to determine potential correlations at antibody level. Monoclonal peptide antibodies generated in mice specific for a region with high similarity in all three proteins were screened for reactivity along with human sera in immunoassays. In total, six antibodies were generated. Two of the antibodies reacted to both GAD isoforms. However, none of the antibodies were cross-reactive to CVB, suggesting that antibody cross-reactivity between GAD65 and CVB, and GAD67 and CVB may not contribute to the onset of T1D and SPS, respectively.
AB - Two isoforms of the glutamate decarboxylase (GAD) enzyme exist, GAD65 and GAD67, which are associated with type 1 diabetes (T1D) and stiff-person syndrome (SPS), respectively. Interestingly, it has been reported that T1D patients seldom develop SPS, whereas patients with SPS occasionally develop T1D. In addition, coxsackievirus B4 (CVB4) has previously been proposed to be involved in the onset of T1D through molecular mimicry. On this basis, we aimed to examine antibody cross-reactivity between a specific region of GAD65 and GAD67, which has high sequence homology to the nonstructural P2C protein of CVB4 to determine potential correlations at antibody level. Monoclonal peptide antibodies generated in mice specific for a region with high similarity in all three proteins were screened for reactivity along with human sera in immunoassays. In total, six antibodies were generated. Two of the antibodies reacted to both GAD isoforms. However, none of the antibodies were cross-reactive to CVB, suggesting that antibody cross-reactivity between GAD65 and CVB, and GAD67 and CVB may not contribute to the onset of T1D and SPS, respectively.
U2 - 10.3390/ijms23084424
DO - 10.3390/ijms23084424
M3 - Journal article
C2 - 35457242
VL - 23
JO - International Journal of Molecular Sciences (CD-ROM)
JF - International Journal of Molecular Sciences (CD-ROM)
SN - 1424-6783
IS - 8
M1 - 4424
ER -
ID: 300081654