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The marine sponge, Hymeniacidon sinapium, displays allorecognition of siblings during post-larval settling and metamorphosis to juveniles
Dev Comp Immunol. 2024 Apr 11:105179. doi: 10.1016/j.dci.2024.105179. Online ahead of print.ABSTRACTMarine sponges, including the crumb of bread sponge, Hymeniacidon sinapium, display allorejection responses to contact with conspecifics in both experimental and natural settings. These responses have been used to infer immunocompetence in a variety of marine invertebrates. However, larvae and juveniles released from several marine sponge species fuse and form chimeras. Some of these chimeras persist, whereas others eventually break down, revealing a period of allogeneic non-responsiveness that varies depending on the specie...
Source: Developmental and Comparative Immunology - April 13, 2024 Category: Allergy & Immunology Authors: L Courtney Smith Source Type: research

Identification and characterization of myeloid cells localized in the tadpole liver cortex in Xenopus laevis
Dev Comp Immunol. 2024 Apr 8:105178. doi: 10.1016/j.dci.2024.105178. Online ahead of print.ABSTRACTIn the present study, using transgenic frogs that express GFP specifically in myeloid cells under the myeloperoxidase enhancer sequence, we found that myeloperoxidase-positive cells are localized in the liver cortex at the late tadpole stages. Immunohistochemical analysis revealed that myelopoiesis in the liver cortex became evident after st. 50 and reached its peak by st. 56. Transplantation experiments indicated that cells with a high density at the liver cortex were derived from the dorso-lateral plate tissue in the neurul...
Source: Developmental and Comparative Immunology - April 10, 2024 Category: Allergy & Immunology Authors: Mitsugu Ma éno Miki Tanabe Ayame Ogawa Haruka Kobayashi Yumi Izutsu Takashi Kato Source Type: research

Glycosaminoglycan lyase: A new competition between bacteria and the pacific white shrimp Litopenaeus vannamei
In this study, we analyzed bacteria-derived HGT based on a high-quality genome of L. vannamei via a homology search and phylogenetic analysis, and six HGT genes were identified. Among these six horizontally transferred genes, we found one gene (LOC113799989) that contains a bacterial chondroitinase AC structural domain and encodes an unknown glycosaminoglycan (GAG) lyase in L. vannamei. The real-time quantitative PCR results showed that the mRNA expression level of LOC113799989 was highest in the hepatopancreas and heart, and after stimulation by Vibrio parahaemolyticus, its mRNA expression level was rapidly up-regulated w...
Source: Developmental and Comparative Immunology - April 9, 2024 Category: Allergy & Immunology Authors: Bo Zheng Gengzhuo Wang Zhe Qu Jingjie Hu Zhenmin Bao Mengqiang Wang Source Type: research

Integrated analysis of intestinal microbiota and transcriptome reveals that a coordinated interaction of the endocrine, immune system and gut microbiota response to heat stress in Litopenaeus vannamei
This study revealed the response mechanism of L. vannamei to acute heat stress and potentially provided a theoretical foundation for future research on shrimp environmental adaptations.PMID:38582249 | DOI:10.1016/j.dci.2024.105176 (Source: Developmental and Comparative Immunology)
Source: Developmental and Comparative Immunology - April 6, 2024 Category: Allergy & Immunology Authors: Guowei Liao Wanqi Wang Jiaoping Yu Jingping Li Yumeng Yan Haolin Liu Bing Chen Lanfen Fan Source Type: research

Two IFNa3s mediate the regulation of IRF9 in the process of infection with Streptococcus iniae in yellowfin seabream, Acanthopagrus latus (Hottuyn, 1782)
Dev Comp Immunol. 2024 Apr 3;156:105167. doi: 10.1016/j.dci.2024.105167. Online ahead of print.ABSTRACTIRF9 can play an antibacterial role by regulating the type I interferon (IFN) pathway. Streptococcus iniae can cause many deaths of yellowfin seabream, Acanthopagrus latus in pond farming. Nevertheless, the regulatory mechanism of type I IFN signalling by A. latus IRF9 (AlIRF9) against S. iniae remains elucidated. In our study, AlIRF9 has a total cDNA length of 3200 bp and contains a 1311 bp ORF encoding a presumed 436 amino acids (aa). The genomic DNA sequence of AlIRF9 has nine exons and eight introns, and AlIRF9 was ex...
Source: Developmental and Comparative Immunology - April 4, 2024 Category: Allergy & Immunology Authors: Hong-Xi He Hua-Yang Guo Bao-Suo Liu Nan Zhang Ke-Cheng Zhu Dian-Chang Zhang Source Type: research

Molecular characterization, cytoprotective, DNA protective, and immunological assessment of peroxiredoxin-1 (Prdx1) from yellowtail clownfish (Amphiprion clarkii)
In this study, the Prdx1 cDNA sequence was isolated from the pre-established Amphiprion clarkii (A. clarkii) (AcPrdx1) transcriptome database and characterized structurally and functionally. The AcPrdx1 coding sequence comprises 597 bp and encodes 198 amino acids with a molecular weight of 22.1 kDa and a predicted theoretical isoelectric point of 6.3. AcPrdx1 is localized and functionally available in the cytoplasm and nucleus of cells. The TXN domain of AcPrdx1 comprises two peroxiredoxin signature VCP motifs, which contain catalytic peroxidatic (Cp-C52) and resolving cysteine (CR-C173) residues. The constructed phylogene...
Source: Developmental and Comparative Immunology - April 4, 2024 Category: Allergy & Immunology Authors: D C G Rodrigo H M V Udayantha W K M Omeka D S Liyanage M A H Dilshan H A C R Hanchapola Y K Kodagoda Jihun Lee Sukkyoung Lee Taehyug Jeong Qiang Wan Jehee Lee Source Type: research

Two IFNa3s mediate the regulation of IRF9 in the process of infection with Streptococcus iniae in yellowfin seabream, Acanthopagrus latus (Hottuyn, 1782)
Dev Comp Immunol. 2024 Apr 2:105167. doi: 10.1016/j.dci.2024.105167. Online ahead of print.ABSTRACTIRF9 can play an antibacterial role by regulating the type I interferon (IFN) pathway. Streptococcus iniae can cause many deaths of yellowfin seabream, Acanthopagrus latus in pond farming. Nevertheless, the regulatory mechanism of type I IFN signalling by A. latus IRF9 (AlIRF9) against S. iniae remains elucidated. In our study, AlIRF9 has a total cDNA length of 3200 bp and contains a 1311 bp ORF encoding a presumed 436 amino acids (aa). The genomic DNA sequence of AlIRF9 has nine exons and eight introns, and AlIRF9 was expres...
Source: Developmental and Comparative Immunology - April 4, 2024 Category: Allergy & Immunology Authors: Hong-Xi He Hua-Yang Guo Bao-Suo Liu Nan Zhang Ke-Cheng Zhu Dian-Chang Zhang Source Type: research