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Article: Modulation of the spleen transcriptome in domestic turkey (Meleagris gallopavo) in response to aflatoxin B1 and probiotics

TitleModulation of the spleen transcriptome in domestic turkey (Meleagris gallopavo) in response to aflatoxin B1 and probiotics
Authors
Issue Date2015
PublisherSpringer. The Journal's web site is located at http://link.springer.de/link/service/journals/00251/index.htm
Citation
Immunogenetics, 2015, v. 67, p. 163-178 How to Cite?
AbstractPoultry are highly susceptible to the immunotoxic effects of the food-borne mycotoxin aflatoxin B1 (AFB1). Exposure impairs cell-mediated and humoral immunity, limits vaccine efficacy, and increases the incidence of costly secondary infections. We investigated the molecular mechanisms of AFB1 immunotoxicity and the ability of a Lactobacillus-based probiotic to protect against aflatoxicosis in the domestic turkey (Meleagris gallopavo). The spleen transcriptome was examined by RNA sequencing (RNA-seq) of 12 individuals representing four treatment groups. Sequences (6.9 Gb) were de novo assembled to produce over 270,000 predicted transcripts and transcript fragments. Differential expression analysis identified 982 transcripts with statistical significance in at least one comparison between treatment groups. Transcripts with known immune functions comprised 27.6 % of significant expression changes in the AFB1-exposed group. Short exposure to AFB1 suppressed innate immune transcripts, especially from antimicrobial genes, but increased the expression of transcripts from E3 ubiquitin-protein ligase CBL-B and multiple interleukin-2 response genes. Up-regulation of transcripts from lymphotactin, granzyme A, and perforin 1 could indicate either increased cytotoxic potential or activation-induced cell death in the spleen during aflatoxicosis. Supplementation with probiotics was found to ameliorate AFB1-induced expression changes for multiple transcripts from antimicrobial and IL-2-response genes. However, probiotics had an overall suppressive effect on immune-related transcripts.
Persistent Identifierhttp://hdl.handle.net/10722/215551

 

DC FieldValueLanguage
dc.contributor.authorMonson, M-
dc.contributor.authorSettlage, R-
dc.contributor.authorMendoza, K-
dc.contributor.authorRawal, S-
dc.contributor.authorEl-Nezamy, HS-
dc.contributor.authorCoulombe, RA-
dc.contributor.authorReed, K-
dc.date.accessioned2015-08-21T13:29:58Z-
dc.date.available2015-08-21T13:29:58Z-
dc.date.issued2015-
dc.identifier.citationImmunogenetics, 2015, v. 67, p. 163-178-
dc.identifier.urihttp://hdl.handle.net/10722/215551-
dc.description.abstractPoultry are highly susceptible to the immunotoxic effects of the food-borne mycotoxin aflatoxin B1 (AFB1). Exposure impairs cell-mediated and humoral immunity, limits vaccine efficacy, and increases the incidence of costly secondary infections. We investigated the molecular mechanisms of AFB1 immunotoxicity and the ability of a Lactobacillus-based probiotic to protect against aflatoxicosis in the domestic turkey (Meleagris gallopavo). The spleen transcriptome was examined by RNA sequencing (RNA-seq) of 12 individuals representing four treatment groups. Sequences (6.9 Gb) were de novo assembled to produce over 270,000 predicted transcripts and transcript fragments. Differential expression analysis identified 982 transcripts with statistical significance in at least one comparison between treatment groups. Transcripts with known immune functions comprised 27.6 % of significant expression changes in the AFB1-exposed group. Short exposure to AFB1 suppressed innate immune transcripts, especially from antimicrobial genes, but increased the expression of transcripts from E3 ubiquitin-protein ligase CBL-B and multiple interleukin-2 response genes. Up-regulation of transcripts from lymphotactin, granzyme A, and perforin 1 could indicate either increased cytotoxic potential or activation-induced cell death in the spleen during aflatoxicosis. Supplementation with probiotics was found to ameliorate AFB1-induced expression changes for multiple transcripts from antimicrobial and IL-2-response genes. However, probiotics had an overall suppressive effect on immune-related transcripts.-
dc.languageeng-
dc.publisherSpringer. The Journal's web site is located at http://link.springer.de/link/service/journals/00251/index.htm-
dc.relation.ispartofImmunogenetics-
dc.rightsThe final publication is available at Springer via http://dx.doi.org/[insert DOI]-
dc.titleModulation of the spleen transcriptome in domestic turkey (Meleagris gallopavo) in response to aflatoxin B1 and probiotics-
dc.typeArticle-
dc.identifier.emailEl-Nezamy, HS: elnezami@hkucc.hku.hk-
dc.identifier.authorityEl-Nezamy, HS=rp00694-
dc.identifier.doi10.1007/s00251-014-0825-y-
dc.identifier.hkuros248190-
dc.identifier.volume67-
dc.identifier.spage163-
dc.identifier.epage178-
dc.publisher.placeBerlin Heidelberg-

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