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- W2090818946 abstract "We investigated how the equine fetus prepares its pre-immune humoral repertoire for an imminent exposure to pathogens in the neonatal period, particularly how the primary hematopoietic organs are equipped to support B cell hematopoiesis and immunoglobulin (Ig) diversity. We demonstrated that the liver and the bone marrow at approximately 100 days of gestation (DG) are active sites of hematopoiesis based on the expression of signature messenger RNA (mRNA) (c-KIT, CD34, IL7R, CXCL12, IRF8, PU.1, PAX5, NOTCH1, GATA1, CEBPA) and protein markers (CD34, CD19, IgM, CD3, CD4, CD5, CD8, CD11b, CD172A) of hematopoietic development and leukocyte differentiation molecules, respectively. To verify Ig diversity achieved during the production of B cells, V(D)J segments were sequenced in primary lymphoid organs of the equine fetus and adult horse, revealing that similar heavy chain VDJ segments and CDR3 lengths were most frequently used independent of life stage. In contrast, different lambda light chain segments were predominant in equine fetal compared to adult stage, and surprisingly, the fetus had less restricted use of variable gene segments to construct the lambda chain. Fetal Igs also contained elements of sequence diversity, albeit to a smaller degree than that of the adult horse. Our data suggest that the B cells produced in the liver and bone marrow of the equine fetus generate a wide repertoire of pre-immune Igs for protection, and the more diverse use of different lambda variable gene segments in fetal life may provide the neonate an opportunity to respond to a wider range of antigens at birth." @default.
- W2090818946 created "2016-06-24" @default.
- W2090818946 creator A5045894508 @default.
- W2090818946 creator A5052991048 @default.
- W2090818946 creator A5061701685 @default.
- W2090818946 creator A5067035673 @default.
- W2090818946 date "2014-09-02" @default.
- W2090818946 modified "2023-10-16" @default.
- W2090818946 title "Hematopoiesis in the equine fetal liver suggests immune preparedness" @default.
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- W2090818946 doi "https://doi.org/10.1007/s00251-014-0799-9" @default.
- W2090818946 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4198492" @default.
- W2090818946 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25179685" @default.
- W2090818946 hasPublicationYear "2014" @default.
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