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Cao HM, Wu JH, Li S, Zhou X, Zheng LB, Chi CF. A Na + channel receptor of FMRFamide in the cephalopod Sepiella japonica: Identification, characterisation, and expression profiling during different stages of gonadal development. Neuropeptides 2024; 106:102437. [PMID: 38776655 DOI: 10.1016/j.npep.2024.102437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 05/07/2024] [Accepted: 05/07/2024] [Indexed: 05/25/2024]
Abstract
FMRFamide, a member of the neuropeptide family, is involved in numerous physiological processes. FMRFamide-activated sodium channels (FaNaCs) are a family of non-voltage-gated, amiloride-sensitive, Na+-selective channels triggered by the neuropeptide FMRFamide. In the present study, the full-length cDNA of the FaNaC receptor of Sepiella japonica (SjFaNaC) was cloned. The cDNA of SjFaNaC was 3004 bp long with an open reading frame (ORF) of 1812 bp, encoding 603 amino acid residues with no signal peptide at the N-terminus. Sequence analysis indicated that SjFaNaC shared a high identity with other cephalopods FaNaCs and formed a sister clade with bivalves. The protein structure was predicted using SWISS-MODEL with AcFaNaC as the template. Quantitative real-time PCR (qRT-PCR) revealed that SjFaNaC transcripts were highly expressed in both female and male reproductive organs, as well as in the optic lobe and brain of the central nervous system (CNS). Results of in situ hybridisation (ISH) showed that SjFaNaC mRNA was mainly distributed in the medulla and deep retina of the optic lobe and in both the supraesophageal and subesophageal masses of the brain. Subcellular localisation indicated that the SjFaNaC protein was localised intracellularly and on the cell surface of HEK293T cells. In summary, these findings may lay the foundation for future exploration of the functions of SjFaNaC in cephalopods.
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Affiliation(s)
- Hui-Min Cao
- National and Provincial Joint Engineering Research Centre for Marine Germplasm Resources Exploration and Utilization, School of Marine Science and Technology, Zhejiang Ocean University, 1st Haidanan Road, Changzhi Island, Lincheng, Zhoushan 316022, China
| | - Jun-Hong Wu
- National and Provincial Joint Engineering Research Centre for Marine Germplasm Resources Exploration and Utilization, School of Marine Science and Technology, Zhejiang Ocean University, 1st Haidanan Road, Changzhi Island, Lincheng, Zhoushan 316022, China
| | - Shuang Li
- National and Provincial Joint Engineering Research Centre for Marine Germplasm Resources Exploration and Utilization, School of Marine Science and Technology, Zhejiang Ocean University, 1st Haidanan Road, Changzhi Island, Lincheng, Zhoushan 316022, China
| | - Xu Zhou
- National and Provincial Joint Engineering Research Centre for Marine Germplasm Resources Exploration and Utilization, School of Marine Science and Technology, Zhejiang Ocean University, 1st Haidanan Road, Changzhi Island, Lincheng, Zhoushan 316022, China
| | - Li-Bing Zheng
- National and Provincial Joint Engineering Research Centre for Marine Germplasm Resources Exploration and Utilization, School of Marine Science and Technology, Zhejiang Ocean University, 1st Haidanan Road, Changzhi Island, Lincheng, Zhoushan 316022, China
| | - Chang-Feng Chi
- National and Provincial Joint Engineering Research Centre for Marine Germplasm Resources Exploration and Utilization, School of Marine Science and Technology, Zhejiang Ocean University, 1st Haidanan Road, Changzhi Island, Lincheng, Zhoushan 316022, China.
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Sha A, Chen H, Zhang Y. Expression profile and immunomodulatory roles of methionine-enkephalin and delta opioid receptor in Octopus ocellatus. FISH & SHELLFISH IMMUNOLOGY 2024; 150:109637. [PMID: 38754647 DOI: 10.1016/j.fsi.2024.109637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 05/09/2024] [Accepted: 05/14/2024] [Indexed: 05/18/2024]
Abstract
In this study, the expressions and distributions of methionine-enkephalin (Met-enk) and δ opioid receptor in the nervous system of Octopus ocellatus, and the immune regulatory mechanisms of Met-enk on O. ocellatus were explored. The distributions and expressions of Met-enk and δ opioid receptor were assessed by immunohistochemistry and enzyme-linked immunosorbent assay. UV-spectrophotometer, microplate reader, and flow cytometer were used to examine the effects of different concentrations of Met-enk on phagocytosis, antioxidant effects, and body surface mucus immunity of O. ocellatus hemocytes. The data were used to study the mechanisms of Met-enk immunity regulation in O. ocellatus. According to the results, the expression levels of Met-enk and δ opioid receptor in O. ocellatus lymphocytes were higher than those in hemocytes. The expression levels of Met-enk in the ganglia of O. ocellatus decreased in the following order: pedal ganglia > cerebral ganglia > visceral ganglia > optic ganglia > stellate ganglia. Moreover, the phagocytic activity of O. ocellatus hemocytes was enhanced with increasing Met-enk concentration. With increasing Met-enk concentration, the expressions of nitric oxide, total nitric oxide synthase, inducible nitric oxide synthase, catalase, hydrogen peroxide, myeloperoxidase, reduced glutathione, α-naphthy acetate esterase, and methionine aminopeptidases decreased in serums of O. ocellatus in the experimental group compared to the blank group. Similarly, the content of reduced glutathione in the hemocytes of O. ocellatus was also lower in the experimental group than in the blank group; however, the expressions of other substances were higher compared to the blank group. Furthermore, α-naphthy acetate esterase, myeloperoxidase, and hydrogen peroxide expressions in mucus immunity trials of the body surface were lower in the experimental group compared to the blank group. These results indicate that the distributions and expressions of Met-enk and δ opioid receptor in the nervous system of O. ocellatus were related to axoplasmic transport and immune regulation mechanisms. Met-enk participates in cellular immunity, humoral immunity, and mucus immunity in the form of neurotransmitters, thereby regulating the immune response of O. ocellatus.
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Affiliation(s)
- Ailong Sha
- School of Teacher Education, Chongqing Three Gorges University, Chongqing, 404120, China; School of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing, 404120, China.
| | - Hongrun Chen
- School of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing, 404120, China
| | - Yaling Zhang
- School of Biology and Food Engineering, Chongqing Three Gorges University, Chongqing, 404120, China
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3
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Li M, Yang L, Zhang L, Zhang Q, Liu Y. Specific biomarkers and neurons distribution of different brain regions in largemouth bass ( Micropterus salmoides). Front Endocrinol (Lausanne) 2024; 15:1385575. [PMID: 38745953 PMCID: PMC11091468 DOI: 10.3389/fendo.2024.1385575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 04/15/2024] [Indexed: 05/16/2024] Open
Abstract
The brain regulates multiple physiological processes in fish. Despite this, knowledge about the basic structure and function of distinct brain regions in non-model fish species remains limited due to their diversity and the scarcity of common biomarkers. In the present study, four major brain parts, the telencephalon, diencephalon, mesencephalon and rhombencephalon, were isolated in largemouth bass, Micropterus salmoides. Within these parts, nine brain regions and 74 nuclei were further identified through morphological and cytoarchitectonic analysis. Transcriptome analysis revealed a total of 7153 region-highly expressed genes and 176 region-specifically expressed genes. Genes related to growth, reproduction, emotion, learning, and memory were significantly overexpressed in the olfactory bulb and telencephalon (OBT). Feeding and stress-related genes were in the hypothalamus (Hy). Visual system-related genes were predominantly enriched in the optic tectum (OT), while vision and hearing-related genes were widely expressed in the cerebellum (Ce) region. Sensory input and motor output-related genes were in the medulla oblongata (Mo). Osmoregulation, stress response, sleep/wake cycles, and reproduction-related genes were highly expressed in the remaining brain (RB). Three candidate marker genes were further identified for each brain regions, such as neuropeptide FF (npff) for OBT, pro-melanin-concentrating hormone (pmch) for Hy, vesicular inhibitory amino acid transporter (viaat) for OT, excitatory amino acid transporter 1 (eaat1) for Ce, peripherin (prph) for Mo, and isotocin neurophysin (itnp) for RB. Additionally, the distribution of seven neurotransmitter-type neurons and five types of non-neuronal cells across different brain regions were analyzed by examining the expression of their marker genes. Notably, marker genes for glutamatergic and GABAergic neurons showed the highest expression levels across all brain regions. Similarly, the marker gene for radial astrocytes exhibited high expression compared to other markers, while those for microglia were the least expressed. Overall, our results provide a comprehensive overview of the structural and functional characteristics of distinct brain regions in the largemouth bass, which offers a valuable resource for understanding the role of central nervous system in regulating physiological processes in teleost.
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Affiliation(s)
- Meijia Li
- College of Biosystems Engineering and Food Science (BEFS), Zhejiang University, Hangzhou, China
| | - Leshan Yang
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
| | - Lei Zhang
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
- College of Marine Technology and Environment, Dalian Ocean University, Dalian, China
| | - Qian Zhang
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
- College of Marine Technology and Environment, Dalian Ocean University, Dalian, China
| | - Ying Liu
- College of Biosystems Engineering and Food Science (BEFS), Zhejiang University, Hangzhou, China
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
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Tang J, Yuan M, Wang J, Li Q, Huang B, Wei L, Liu Y, Han Y, Zhang X, Wang X, Zhang M, Wang X. Identification and characterization of gonadotropin-releasing hormone (GnRH) in Zhikong scallop Chlamys farreri during gonadal development. Front Physiol 2023; 14:1180725. [PMID: 37324384 PMCID: PMC10264684 DOI: 10.3389/fphys.2023.1180725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/16/2023] [Indexed: 06/17/2023] Open
Abstract
Gonadotropin-releasing hormone (GnRH) controls synthesis of sex steroid hormones through hypothalamic-pituitary-gonadal (HPG) axis in vertebrates. But in mollusks, research on neuroendocrine control of gonadal function, such as the function of GnRH during gonadal development is limited. In this study, we investigated the morphology and structure of the nerve ganglia of Zhikong scallop Chlamys farreri by physiological and histological observations. We also cloned the ORF and studied the expression patterns of GnRH in the scallop. Tissue expression analysis showed that GnRH was highly expressed in parietovisceral ganglion (PVG). The in situ hybridization result further confirmed that GnRH mRNA only distributed in some good-sized neurons in the posterior lobe (PL) and some pint-sized neurons in the lateral lobe (LL). In addition, by examining the expression of GnRH during gonadal development in ganglia, we found GnRH displayed higher expression in the female scallops, and showed significant high expression at the growing stage of female scallops in PVG. This study would contribute to gaining insight into the mechanism underlying reproduction regulation by GnRH in the scallop and help to provide a better understanding of reproductive neuroendocrine in mollusks.
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Affiliation(s)
- Juyan Tang
- School of Agriculture, Ludong University, Yantai, China
| | | | - Jia Wang
- College of Animal Science and Technology, Northwest A&F University, Xianyang, China
| | - Qianqian Li
- School of Agriculture, Ludong University, Yantai, China
| | - Baoyu Huang
- School of Agriculture, Ludong University, Yantai, China
| | - Lei Wei
- School of Agriculture, Ludong University, Yantai, China
| | - Yaqiong Liu
- School of Agriculture, Ludong University, Yantai, China
| | - Yijing Han
- School of Agriculture, Ludong University, Yantai, China
| | - Xuekai Zhang
- School of Agriculture, Ludong University, Yantai, China
| | - Xiaona Wang
- School of Agriculture, Ludong University, Yantai, China
| | - Meiwei Zhang
- School of Agriculture, Ludong University, Yantai, China
| | - Xiaotong Wang
- School of Agriculture, Ludong University, Yantai, China
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Dong M, Wang W, Wang L, Liu Y, Ma Y, Li M, Liu H, Wang K, Song L. The characterization of an agranulocyte-specific marker (CgCD9) in the Pacific oyster Crassostrea gigas. FISH & SHELLFISH IMMUNOLOGY 2022; 127:446-454. [PMID: 35792345 DOI: 10.1016/j.fsi.2022.06.067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/16/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
The agranulocytes in the Pacific oyster Crassostrea gigas are a group of haemocytes that are significantly different from semi-granulocytes and granulocytes on the morphology. Agranulocytes are the smallest haemocytes characterized by a spherical shape, the largest ratio of nucleus to cytoplasm, and no granules in the cytoplasm. The lack of unique cell surface markers impedes the isolation of agranulocytes from total haemocytes. Previous transcriptome sequencing analysis of three subpopulations of haemocytes revealed that a homologue of CD9 (designed as CgCD9) was highly expressed in agranulocytes of oyster C. gigas (data not shown). In the present study, CgCD9 was identified to share a similarity of 60% with other vertebrates CD9s, and it harbored a typical four transmembrane domain and a conserved Cys-Cys-Gly (CCG) motif. The mRNA transcript of CgCD9 was found to be highly expressed in agranulocytes, which was 6.63-fold (p < 0.05) and 3.68-fold (p < 0.05) of that in granulocytes and semi-granulocytes, respectively. A specific monoclonal antibody of CgCD9 (named 3D8) was successfully prepared by traditional hybridoma technology, and a single positive band at 25.2 kDa was detected in the haemocyte proteins by Western Blotting, indicating that this monoclonal antibody exhibited high specificity and sensitivity to CgCD9 protein. The ELISA positive value of 3D8 monoclonal antibody to recognize agranulocytes, semi-granulocytes and granulocytes was 17.35, 4.48 and 1.55, respectively, indicating that monoclonal antibody was specific to agranulocytes. Immunocytochemistry assay revealed that CgCD9 was specifically distributed on the membrane of agranulocytes. Using immunomagnetic beads coated with 3D8 monoclonal antibody, CgCD9+cells with a purity of 94.53 ± 5.60% were successfully isolated with a smaller diameter, a larger N:C ratio and no granules in cytoplasm, and could be primary culture in the modified L-15 medium in vitro. Collectively, these results suggested that CgCD9 was a specific cell surface marker for agranulocytes, which offered a tool for high-purity capture of agranulocytes from total haemocytes in C. gigas.
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Affiliation(s)
- Miren Dong
- College of Ocean and Earth Science, Xiamen University, Xiamen, 361102, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China
| | - Weilin Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Laboratory of Marine Fisheries Science and Food Production Process, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Laboratory of Marine Fisheries Science and Food Production Process, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Yu Liu
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Youwen Ma
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Meijia Li
- College of Ocean and Earth Science, Xiamen University, Xiamen, 361102, China; Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Haipeng Liu
- College of Ocean and Earth Science, Xiamen University, Xiamen, 361102, China
| | - Kejian Wang
- College of Ocean and Earth Science, Xiamen University, Xiamen, 361102, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Laboratory of Marine Fisheries Science and Food Production Process, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Disease Prevention and Control, Dalian Ocean University, Dalian, 116023, China.
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6
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Zheng L, Cao H, Qiu J, Chi C. Inhibitory Effect of FMRFamide on NO Production During Immune Defense in Sepiella japonica. Front Immunol 2022; 13:825634. [PMID: 35572529 PMCID: PMC9095972 DOI: 10.3389/fimmu.2022.825634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/29/2022] [Indexed: 11/13/2022] Open
Abstract
Neuropeptide Phe-Met-Arg-Phe-NH2 (FMRFamide), specifically existing in invertebrates, plays pivotal roles in various physiological processes. The involvement in neuroendocrine-immune regulation was explored in recent years, and it could modulate nitric oxide (NO) production under immune stress. However, detailed knowledge is still little known. In this study, we identified FMRFamide as an inhibitory factor on NO production in the immune reaction of Sepiella japonica. Firstly, Vibrio harveyi incubation caused significantly upregulated expression of FMRFamide precursor and NO synthase (NOS) in just hatched cuttlefish with quantitative Real-time PCR (qRT-PCR), which indicated that both were likely to be involved in the immune defense. The whole-mount in situ hybridization (ISH) detected FMRFamide precursor and NOS-positive signals appeared colocalization, suggesting that at histological and anatomical levels FMRFamide might interact with NOS. Next, NOS mRNA was highly significantly upregulated at 72 h when FMRFamide precursor mRNA was knocked down effectively with the RNA interference (RNAi) method; the results hinted that FMRFamide was likely to regulate NO production. Continuously, the inflammatory model was constructed in RAW 264.7 cells induced by lipopolysaccharide (LPS), FMRFamide administration resulted in a highly significant reduction of the NO level in dose- and time-response manners. Although the addition of the selected inducible NOS (iNOS) inhibitor had inhibited the NO production induced by LPS, the additional FMRFamide could still furtherly sharpen the process. Collectively, it was concluded that neuropeptide FMRFamide could indeed inhibit NO production to serve as feedback regulation at the late stage of immune response to protect hosts from excessive immune cytotoxicity. The inhibitory effect on NO production could not only be mediated by the NOS pathway but also be implemented through other pathways that needed to be furtherly explored. The results will provide data for comparing the structure and immune function of neuroendocrine-immune system (NEIS) between "advanced" cephalopods and other invertebrates and will provide new information for understanding the NEIS of cephalopods.
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Affiliation(s)
| | | | | | - Changfeng Chi
- National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources, School of Marine Science and Technology, Zhejiang Ocean University, Zhoushan, China
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Guo G, Kong Y, Su J, Wang G, Zhang M, Wang S, Song Z. Immunomodulatory activity of aqueous extract from Crassostrea sikamea in the splenocytes of Sprague-Dawley rats. Food Sci Nutr 2022; 10:813-821. [PMID: 35282010 PMCID: PMC8907723 DOI: 10.1002/fsn3.2710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/27/2021] [Accepted: 12/17/2021] [Indexed: 11/13/2022] Open
Abstract
Crassostrea sikamea (C. sikamea) is used as an important edible and medicinal seafood in China. In the present study, an aqueous extract of C. sikamea (AECs) was prepared, and its immunomodulatory effects on rat splenocytes were studied. 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay revealed that AECs was able to promote splenocyte proliferation. Moreover, flow cytometry revealed that AECs treatment markedly altered the populations of splenic lymphocyte subtypes. Data from real-time quantitative PCR (RT-qPCR) and enzyme-linked immunosorbent assay (ELISA) showed that AECs promoted the mRNA expression and secretion of TNF-α, IL-2, IL-6, IL-12, and IFN-γ. Mechanistically, p38 MAPK phosphorylation in splenocytes was significantly upregulated under AECs treatment and p38 MAPK inhibitor reversed the promoting effect of AECs on the expression of inflammatory cytokines. Collectively, our novel evidence suggests that AECs exhibits immunomodulatory activity in vitro, supporting the further application of C. sikamea as a potential functional food.
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Affiliation(s)
- Guannan Guo
- National Engineering Laboratory for Druggable Gene and Protein ScreeningSchool of Life SciencesNortheast Normal UniversityChangchunChina
| | - Ying Kong
- NMPA Key Laboratory for Quality Control of Cell and Gene Therapy Medicine ProductsNortheast Normal UniversityChangchunChina
| | - Jie Su
- NMPA Key Laboratory for Quality Control of Cell and Gene Therapy Medicine ProductsNortheast Normal UniversityChangchunChina
| | - Geng Wang
- National Engineering Laboratory for Druggable Gene and Protein ScreeningSchool of Life SciencesNortheast Normal UniversityChangchunChina
| | - Muqing Zhang
- School of Molecular & Cellular BiologyUniversity of Illinois Urbana ChampaignUrbanaIllinoisUSA
| | - Shuyue Wang
- National Engineering Laboratory for Druggable Gene and Protein ScreeningSchool of Life SciencesNortheast Normal UniversityChangchunChina
- NMPA Key Laboratory for Quality Control of Cell and Gene Therapy Medicine ProductsNortheast Normal UniversityChangchunChina
| | - Zhenbo Song
- NMPA Key Laboratory for Quality Control of Cell and Gene Therapy Medicine ProductsNortheast Normal UniversityChangchunChina
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Wei Y, Xu Z, Hao S, Guo S, Huang H, Ye H. Immunomodulatory role of crustacean cardioactive peptide in the mud crab Scylla paramamosain. FISH & SHELLFISH IMMUNOLOGY 2022; 121:142-151. [PMID: 34998986 DOI: 10.1016/j.fsi.2021.12.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 06/14/2023]
Abstract
Crustacean cardioactive peptide (CCAP) is a pleiotropic neuropeptide, but its immunomodulatory role is not clear. Herein, the mud crab Scylla paramamosain provides a primitive model to study crosstalk between the neuroendocrine and immune systems. In this study, in situ hybridization showed that Sp-CCAP positive signal localized in multiple cells in the nervous tissue, while its conjugate receptor (Sp-CCAPR) positive signal mainly localized in the semigranular cells of hemocytes. The Sp-CCAP mRNA expression level in the thoracic ganglion was significantly up-regulated after lipopolysaccharide (LPS) stimulation, but the Sp-CCAP mRNA expression level was up-regulated firstly and then down-regulated after the stimulation of polyriboinosinic polyribocytidylic acid [Poly (I:C)]. After the injection of Sp-CCAP synthesis peptide, the phagocytosis ability of hemocytes was significantly higher than that of synchronous control group. Simultaneously, the mRNA expression of phagocytosis related gene (Sp-Rab5), nuclear transcription factor NF-κB homologues (Sp-Relish), C-type lectin (Sp-CTL-B), prophenoloxidase (Sp-proPO), pro-inflammatory cytokines factor (Sp-TNFSF, Sp-IL16) and antimicrobial peptides (Sp-ALF1 and Sp-ALF5) in the hemocytes were also significantly up-regulated at different time points after the injection of Sp-CCAP synthetic peptide, but Sp-TNFSF, Sp-ALF1 and Sp-ALF5 were down-regulated significantly at 24h. In addition, RNA interference of Sp-CCAP suppressed the phagocytic activity of hemocytes and inhibited the mRNA expression of Sp-Rab5, Sp-Relish, Sp-CTL-B, Sp-TNFSF, Sp-IL16 and Sp-ALF5 in the hemocytes, and ultimately weakened the ability of hemolymph bacteria clearance of mud crab. Taken together, these results revealed that CCAP induced innate immune and increased the anti-infection ability in the mud crab.
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Affiliation(s)
- Yujie Wei
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
| | - Zhanning Xu
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
| | - Shuang Hao
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
| | - Songlin Guo
- College of Fisheries, Jimei University, Xiamen, 361021, China
| | - Huiyang Huang
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China.
| | - Haihui Ye
- College of Fisheries, Jimei University, Xiamen, 361021, China.
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Sahu R, Sahu SK, Nishank SS. de novo transcriptome profile of two earthworms Lampito mauritii and Drawida calebi during regeneration. Biochem Biophys Rep 2021; 27:101092. [PMID: 34409173 PMCID: PMC8361223 DOI: 10.1016/j.bbrep.2021.101092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 11/26/2022] Open
Abstract
Earthworms have remarkable ability to regenerate its tail and head region. However the list of genes expressed in this regeneration process has been less explored baring a few species. The current study involves the de novo transcriptome sequencing of intact tail and regenerating tail (15 day post amputation) of earthworms belonging to two different genera Lampito mauritii (Kinberg, 1867) and Drawida calebi (Gates, 1945). This study contains one de-novo and one reference based transcriptome analysis each from one genus of two earthworm genera. From a total of 119.92 million (150 × 2) reads, 112.95 million high quality adapter free reads were utilized in analysis. Assembly of high-quality reads was performed separately for Lampito mauritii (LM sample) and Drawida calebi (DC sample) that resulted in 66368 and 1,61,289 transcripts respectively. About 25.21% of transcripts were functionally annotated for DC sample and 38.27% for LM samples against Annelida sequences. A total of 239 genes were expressed exclusively in regenerated tissue compared to intact sample in DC whereas about 241 genes were exclusively expressed in regenerated tissue of LM compared to its intact sample. Majority of genes in Drawida and Lampito were dedicated to immune response, maintenance of cytoskeleton, resisting oxidative stress and promoting neuronal regeneration for cell-cell communication during tail regeneration. Upregulation of genes such as beta catenin, Sox, notch, FGF, frizzled. Similarity with annelid worm Capitella telesta.
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Affiliation(s)
- Ranjan Sahu
- Post Graduate Department of Zoology, Utkal University, Vani Vihar, Bhubaneswar, 751004, Odisha, India
| | - Sanjat Kumar Sahu
- Dept. of Environment Science, Sambalpur University, Jyoti Vihar, Burla, 768019, Odisha, India
| | - Sudhansu Sekhar Nishank
- Post Graduate Department of Zoology, Utkal University, Vani Vihar, Bhubaneswar, 751004, Odisha, India
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Transcriptome Profiling of the Pacific Oyster Crassostrea gigas Visceral Ganglia over a Reproduction Cycle Identifies Novel Regulatory Peptides. Mar Drugs 2021; 19:md19080452. [PMID: 34436291 PMCID: PMC8398477 DOI: 10.3390/md19080452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 11/18/2022] Open
Abstract
The neuropeptides involved in the regulation of reproduction in the Pacific oyster (Crassostrea gigas) are quite diverse. To investigate this diversity, a transcriptomic survey of the visceral ganglia (VG) was carried out over an annual reproductive cycle. RNA-seq data from 26 samples corresponding to VG at different stages of reproduction were de novo assembled to generate a specific reference transcriptome of the oyster nervous system and used to identify differentially expressed transcripts. Transcriptome mining led to the identification of novel neuropeptide precursors (NPPs) related to the bilaterian Eclosion Hormone (EH), crustacean female sex hormone/Interleukin 17, Nesfatin, neuroparsin/IGFBP, prokineticins, and urotensin I; to the protostome GNQQN, pleurin, prohormones 3 and 4, prothoracotropic hormones (PTTH), and QSamide/PXXXamide; to the lophotrochozoan CCWamide, CLCCY, HFAamide, and LXRX; and to the mollusk-specific NPPs CCCGS, clionin, FYFY, GNamide, GRWRN, GSWN, GWE, IWMPxxGYxx, LXRYamide, RTLFamide, SLRFamide, and WGAGamide. Among the complete repertoire of NPPs, no sex-biased expression was observed. However, 25 NPPs displayed reproduction stage-specific expression, supporting their involvement in the control of gametogenesis or associated metabolisms.
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Xu Z, Wei Y, Wang G, Ye H. B-type allatostatin regulates immune response of hemocytes in mud crab Scylla paramamosain. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 120:104050. [PMID: 33631272 DOI: 10.1016/j.dci.2021.104050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/16/2021] [Accepted: 02/17/2021] [Indexed: 06/12/2023]
Abstract
B-type allatostatins (AST-B) are neuropeptides that have important physiological roles in arthropods, they have also been identified in a number of crustacean species. Recent research on neuroendocrine-immune (NEI) regulatory system in invertebrates has exploded, it reveals that the NEI network plays an indispensable role in optimizing the immune response and maintaining homeostasis. Herein, mud crab Scylla paramamosain provides a primitive and ancient model to study crosstalk between the neuroendocrine and immune systems. In this study, qRT-PCR analysis showed that the nervous system was the main production site for Sp-AST-B mRNA in S. paramamosain, while its receptor gene (Sp-AST-BR) mRNA could be detected in all the analyzed tissues including hemocytes. This reveals that AST-B might act as a pleiotropic neuropeptide. In situ hybridization further confirmed that granular cells of hemocyte subpopulations express Sp-AST-BR. Time-course analysis revealed that bacteria-analog LPS or virus-analog Poly (I:C) challenge significantly induced Sp-AST-B expression in the thoracic ganglion, and the expression of Sp-AST-BR in hemocytes were also positively changed. Furthermore, mud crabs treated with a synthetic AST-B peptide significantly increased the mRNA levels of AST-BR, nuclear factor-κB (NF-κB) transcription factor (Dorsal and Relish), pro-inflammatory cytokine (IL-16) and immune-effector molecules, and also dramatically enhanced the nitric oxide (NO) production and phagocytic activity in hemocytes. Meanwhile dsRNA-mediated knockdown of Sp-AST-B remarkably suppressed the NO concentrations, phagocytic activity and the expression of immune related genes, resulting in markedly impaired ability of crabs to inhibit bacterial proliferation in vivo. Combined, these data demonstrate that AST-B induced innate immune in the mud crab.
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Affiliation(s)
- Zhanning Xu
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
| | - Yujie Wei
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
| | - Guizhong Wang
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
| | - Haihui Ye
- College of Fisheries, Jimei University, Xiamen, 361021, China.
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Vogeler S, Carboni S, Li X, Joyce A. Phylogenetic analysis of the caspase family in bivalves: implications for programmed cell death, immune response and development. BMC Genomics 2021; 22:80. [PMID: 33494703 PMCID: PMC7836458 DOI: 10.1186/s12864-021-07380-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/08/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Apoptosis is an important process for an organism's innate immune system to respond to pathogens, while also allowing for cell differentiation and other essential life functions. Caspases are one of the key protease enzymes involved in the apoptotic process, however there is currently a very limited understanding of bivalve caspase diversity and function. RESULTS In this work, we investigated the presence of caspase homologues using a combination of bioinformatics and phylogenetic analyses. We blasted the Crassostrea gigas genome for caspase homologues and identified 35 potential homologues in the addition to the already cloned 23 bivalve caspases. As such, we present information about the phylogenetic relationship of all identified bivalve caspases in relation to their homology to well-established vertebrate and invertebrate caspases. Our results reveal unexpected novelty and complexity in the bivalve caspase family. Notably, we were unable to identify direct homologues to the initiator caspase-9, a key-caspase in the vertebrate apoptotic pathway, inflammatory caspases (caspase-1, - 4 or - 5) or executioner caspases-3, - 6, - 7. We also explored the fact that bivalves appear to possess several unique homologues to the initiator caspase groups - 2 and - 8. Large expansions of caspase-3 like homologues (caspase-3A-C), caspase-3/7 group and caspase-3/7-like homologues were also identified, suggesting unusual roles of caspases with direct implications for our understanding of immune response in relation to common bivalve diseases. Furthermore, we assessed the gene expression of two initiator (Cg2A, Cg8B) and four executioner caspases (Cg3A, Cg3B, Cg3C, Cg3/7) in C. gigas late-larval development and during metamorphosis, indicating that caspase expression varies across the different developmental stages. CONCLUSION Our analysis provides the first overview of caspases across different bivalve species with essential new insights into caspase diversity, knowledge that can be used for further investigations into immune response to pathogens or regulation of developmental processes.
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Affiliation(s)
- Susanne Vogeler
- Department of Marine Science, University of Gothenburg, Carl Skottbergsgata 22 B, 41319, Gothenburg, Sweden
| | - Stefano Carboni
- Institute of Aquaculture, University of Stirling, Stirling, Scotland, FK9 4LA, UK
| | - Xiaoxu Li
- South Australia Research and Development Institute Aquatic Sciences Centre, 2 Hamra Ave, West Beach, SA, 5024, Australia
| | - Alyssa Joyce
- Department of Marine Science, University of Gothenburg, Carl Skottbergsgata 22 B, 41319, Gothenburg, Sweden.
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13
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Carroll AR, Copp BR, Davis RA, Keyzers RA, Prinsep MR. Marine natural products. Nat Prod Rep 2021; 38:362-413. [PMID: 33570537 DOI: 10.1039/d0np00089b] [Citation(s) in RCA: 198] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review covers the literature published in 2019 for marine natural products (MNPs), with 719 citations (701 for the period January to December 2019) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1490 in 440 papers for 2019), together with the relevant biological activities, source organisms and country of origin. Pertinent reviews, biosynthetic studies, first syntheses, and syntheses that led to the revision of structures or stereochemistries, have been included. Methods used to study marine fungi and their chemical diversity have also been discussed.
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Affiliation(s)
- Anthony R Carroll
- School of Environment and Science, Griffith University, Gold Coast, Australia. and Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia
| | - Brent R Copp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia and School of Enivironment and Science, Griffith University, Brisbane, Australia
| | - Robert A Keyzers
- Centre for Biodiscovery, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Michèle R Prinsep
- Chemistry, School of Science, University of Waikato, Hamilton, New Zealand
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Xu Z, Wei Y, Guo S, Lin D, Ye H. B-type allatostatin modulates immune response in hepatopancreas of the mud crab Scylla paramamosain. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 110:103725. [PMID: 32376281 DOI: 10.1016/j.dci.2020.103725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
B-type allatostatin (AST-B) is a pleiotropic neuropeptide, widely found in arthropods. However, the information about its immune effect in crustaceans is unknown. In this study, we identified the nervous tissue as the main site for Sp-AST-B expression, while its receptor gene (Sp-AST-BR) is widely expressed in various tissues, including the hepatopancreas. This suggests the peptide's potential role in diverse physiological processes in the mud crab Scylla paramamosain. In situ hybridization revealed that Sp-AST-BR is mainly localized in the F-cell of hepatopancreas. Furthermore, we found a significant up-regulation of Sp-AST-BR transcripts in the hepatopancreas following exposure to lipopolysaccharide (LPS) or polyriboinosinic polyribocytidylic acid (Poly (I:C)). Results from in vitro and in vivo experiments revealed that treatment with a synthetic AST-B peptide mediated significant upregulation in expression of AST-BR, nuclear factor-κB (NF-κB) pathway components (Dorsal and Relish), pro-inflammatory cytokine (IL-16) and antimicrobial peptides (AMPs) in the hepatopancreas. In addition, AST-B treatment mediated significant elevation of nitric oxide (NO) production and enhanced the bacteriostasis capacity of the hepatopancreas tissue in vitro. Taken together, these findings reveal the existence of a basic neuroendocrine-immune (NEI) network in crabs, and indicate that AST-B could couple with its receptor to trigger downstream signaling pathways and induce immune responses in the hepatopancreas.
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Affiliation(s)
- Zhanning Xu
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Yujie Wei
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Songlin Guo
- Fisheries College, Jimei University, Xiamen, 361021, China
| | - Dongdong Lin
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Haihui Ye
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China.
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Wei Y, Lin D, Xu Z, Gao X, Zeng C, Ye H. A Possible Role of Crustacean Cardioactive Peptide in Regulating Immune Response in Hepatopancreas of Mud Crab. Front Immunol 2020; 11:711. [PMID: 32425935 PMCID: PMC7204942 DOI: 10.3389/fimmu.2020.00711] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/30/2020] [Indexed: 12/29/2022] Open
Abstract
Crustacean cardioactive peptide (CCAP), a cyclic amidated non-apeptide, is widely found in arthropods. The functions of CCAP have been revealed to include regulation of heart rate, intestinal peristalsis, molting, and osmotic pressure. However, to date, there has not been any report on the possible involvement of CCAP in immunoregulation in crustaceans. In this study, a CCAP precursor (designated as Sp-CCAP) was identified in the commercially important mud crab Scylla paramamosain, which could be processed into four CCAP-associated peptides and one mature peptide (PFCNAFTGC-NH2). Bioinformatics analysis indicated that Sp-CCAP was highly conserved in crustaceans. RT-PCR results revealed that Sp-CCAP was expressed in nerve tissues and gonads, whereas the Sp-CCAP receptor gene (Sp-CCAPR) was expressed in 12 tissues of S. paramamosain, including hepatopancreas. In situ hybridization further showed that an Sp-CCAPR-positive signal is mainly localized in the F-cells of hepatopancreas. Moreover, the mRNA expression level of Sp-CCAPR in the hepatopancreas was significantly up-regulated after lipopolysaccharide (LPS) or polyriboinosinic polyribocytidylic acid [Poly (I:C)] challenge. Meanwhile, the mRNA expression level of Sp-CCAPR, nuclear transcription factor NF-κB homologs (Sp-Dorsal and Sp-Relish), member of mitogen-activated protein kinase (MAPK) signaling pathway (Sp-P38), pro-inflammatory cytokines factor (Sp-TNFSF and Sp-IL16), and antimicrobial peptide (Sp-Lysozyme, Sp-ALF, Sp-ALF4, and Sp-ALF5) in the hepatopancreas were all up-regulated after the administration of synthetic Sp-CCAP mature peptide both in vivo and in vitro. The addition of synthetic Sp-CCAP mature peptide in vitro also led to an increase in nitric oxide (NO) concentration and an improved bacterial clearance ability in the hepatopancreas culture medium. The present study suggested that Sp-CCAP signaling system might be involved in the immune responses of S. paramamosain by activating immune molecules on the hepatopancreas. Collectively, our findings shed new light on neuroendocrine-immune regulatory system in arthropods and could potentially provide a new strategy for disease prevention and control for mud crab aquaculture.
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Affiliation(s)
- Yujie Wei
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Dongdong Lin
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Zhanning Xu
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Xiaoman Gao
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Chaoshu Zeng
- College of Science and Engineering, James Cook University, Townsville, QLD, Australia
| | - Haihui Ye
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
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Zhu Y, Sun LL, Wu JH, Liu HH, Zheng LB, Lü ZM, Chi CF. An FMRFamide Neuropeptide in Cuttlefish Sepia pharaonis: Identification, Characterization, and Potential Function. Molecules 2020; 25:E1636. [PMID: 32252312 PMCID: PMC7180943 DOI: 10.3390/molecules25071636] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/23/2020] [Accepted: 03/31/2020] [Indexed: 12/11/2022] Open
Abstract
Neuropeptides are released by neurons that are involved in a wide range of brain functions, such as food intake, metabolism, reproduction, and learning and memory. A full-length cDNA sequence of an FMRFamide gene isolated from the cuttlefish Sepia pharaonis (designated as SpFMRFamide) was cloned. The predicted precursor protein contains one putative signal peptide and four FMRFamide-related peptides. Multiple amino acid and nucleotide sequence alignments showed that it shares 97% similarity with the precursor FMRFamides of Sepiella japonica and Sepia officinalis and shares 93% and 92% similarity with the SpFMRFamide gene of the two cuttlefish species, respectively. Moreover, the phylogenetic analysis also suggested that SpFMRFamide and FMRFamides from S. japonica and S. officinalis belong to the same sub-branch. Tissue expression analysis confirmed that SpFMRFamide was widely distributed among tissues and predominantly expressed in the brain at the three development stages. The combined effects of SpFMRFamide+SpGnRH and SpFLRFamide+SpGnRH showed a marked decrease in the level of the total proteins released in the CHO-K1 cells. This is the first report of SpFMRFamide in S. pharaonis and the results may contribute to future studies of neuropeptide evolution or may prove useful for the development of aquaculture methods for this cuttlefish species.
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Affiliation(s)
| | | | | | | | | | | | - Chang-feng Chi
- National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources, National Engineering Research Center of Marine Facilities Aquaculture, School of Marine Science and Technology, Zhejiang Ocean University, 1st Haidanan Road, Changzhi Island, Lincheng, Zhoushan 316022, China
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