کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2431896 1106775 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Defining terminally differentiating B cell populations in rainbow trout immune tissues using the transcription factor XbpI
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم آبزیان
پیش نمایش صفحه اول مقاله
Defining terminally differentiating B cell populations in rainbow trout immune tissues using the transcription factor XbpI
چکیده انگلیسی

The nature of antibody-secreting cells in the rainbow trout is poorly defined. Here we describe a flow cytometric approach to help differentiate between four major trout B cell subsets present during terminal B cell differentiation: resting B cells, activated B cells, plasmablasts, and plasma cells. To aid in the identification of B cell subsets, the LPS-inducible transcription factor XbpI-S was used as a marker. An antibody specific to the stable form of inducible transcription factor X-box protein I (XbpI) was generated, which detects XbpI-S protein expression for species within the Oncorhyncus genus, including rainbow trout. Combinatorial expression patterns, or B cell signatures, were established using antibodies to XbpI-S, Pax5, and IgM in combination with a proliferation marker. We show that XbpI-S induction in trout splenic B cells increases throughout a 10-day in vitro LPS-induction period and that increased XbpI-S expression correlates with increased HCmu expression in the cell. PBLs displayed a lower level of XbpI-S induction during this incubation period, compared to spleen. We conclude that trout B cells follow a highly conserved B cell activation pathway, albeit slower than what has been observed in mammalian species. The use of XbpI-S as an activation marker for trout humoral immune activation promises to be useful for future in vivo studies, and can be applied to a broad range of teleost species.


► XbpI-S induction in trout splenic B cells increases during in vitro LPS induction.
► Increased XbpI-S expression correlates with increased HCmu expression in trout.
► Trout blood displays a lower level of XbpI-S induction compared to trout spleen.
► Trout B-activation is slower than what has been observed in mammalian species.
► XbpI-S should provide a B-activation marker for a broad range of teleost species.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fish & Shellfish Immunology - Volume 31, Issue 6, December 2011, Pages 727–735
نویسندگان
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