| Accession |
PMDE91 |
| Name |
Chlamydophila psittaci negative ocular adnexal marginal zone lymphomas express self polyreactive B cell receptors |
| Description |
The pathogenesis of Chlamydophila (C.) psittaci negative ocular adnexal extranodal marginal zone lymphomas (OAEMZLs) is poorly understood. OAEMZLs are monoclonal tumors expressing a biased repertoire of mutated surface immunoglobulins. Antigenic activation of the B cell receptor (BCR) may play a role in the pathogenesis of these lymphomas. We have analyzed the reactivity of recombinant OAEMZL immunoglobulins. OAEMZL antibodies reacted with self-human antigens, as demonstrated by enzyme-linked immunosorbent assays, HEp-2 immunofluorescence and human protein microarrays. All the analyzed recombinant antibodies (rAbs) exhibited polyreactivity by comprehensive protein array antibody reactivity and some rAbs also demonstrated rheumatoid factor activity. The identity of several reactive antigens was confirmed by microcapillary reverse-phase HPLC nano-electrospray tandem mass spectrometry. The tested rAbs frequently reacted with shared intracellular and extracellular self-antigens (e.g. galectin-3). Furthermore, these self-antigens induced BCR signaling in B cells expressing cognate surface immunoglobulins derived from OAEMZLs. These findings suggest that interactions between self-antigens and cognate OAEMZL tumor-derived BCRs are functional, inducing intracellular signaling. Overall our findings suggest that self-antigen-induced BCR stimulation may be implicated in the pathogenesis of C. psittaci negative OAEMZLs. |
| Publication |
Chlamydophila psittaci-negative ocular adnexal marginal zone lymphomas express self polyreactive B-cell receptors
(Go to PubMed)
|
| Provider |
Andrew Gentles |
| Species |
Homo sapiens |
| Subspecies |
Empty
|
| Array type |
Proteome array |
| Sample |
Cell lysate |
| Number of array |
8 |
| Array(1) |
Invitrogen ProtoArray v5.0
|
| Raw data |
download
|
| Experiment details |
download
|
| Analysis report |
No relevant analysis report. If you want to analyse this data, please contact us. |
| Link to GEO |
GSE65443
|
