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Deprecated: Implicit conversion from float 253.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+China+Life+Sci 2020 ; 63 (8): 1240-1250 Nephropedia Template TP
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Next-generation sequencing and single-cell RT-PCR reveal a distinct variable gene usage of porcine antibody repertoire following PEDV vaccination #MMPMID31321668
Li R; Fu F; Feng L; Liu P
Sci China Life Sci 2020[Aug]; 63 (8): 1240-1250 PMID31321668show ga
Porcine epidemic diarrhea virus (PEDV) is the most common diarrhea-causing pathogen in newborn piglets. The clarifications of the overall antibody repertoire and antigen-specific antibody repertoire are essential to provide important insights into the B-cell response and reshape new vaccines. Here, we applied next-generation sequencing (NGS) technology to investigate immunoglobulin (Ig) variable (V) gene segment usage of swine B-cells from peripheral blood lymphocytes (PBL) and mesenteric lymph node (MLN) cells following PEDV vaccination. We identified the transcripts of all functional Ig V-genes in antibody repertoire. IgHV1S2, IgKV1-11, and IgLV3-4 were the most prevalent gene segments for heavy, kappa, and lambda chains, respectively, in PBL and MLN. Unlike previous studies, IgKV1, instead of IgKV2, and IgLV3, instead of IgLV8, were the prevalent Ig V-gene families for kappa and lambda light chains, respectively. We further examined the antibody repertoire of PEDV spike-specific B cells by single-cell RT-PCR. In contrast to the overall antibody repertoire, Ig V-gene segments of PEDV spike-specific B cells preferentially adopted IgHV1-4 and IgHV1-14 for heavy chain, IgKV1-11 for kappa chain, and IgLV3-3 for lambda chain. These results represent a comprehensive analysis to characterize the Ig V-gene segment usage in the overall and PEDV spike-specific antibody repertoire in PBL and MLN.