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Tan M, Cao G, Wang R, Cheng L, Huang W, Yin Y, Ma H, Ho SH, Wang Z, Zhu M, Ran H, Nie G, Wang H. Metal-ion-chelating phenylalanine nanostructures reverse immune dysfunction and sensitize breast tumour to immune checkpoint blockade. NATURE NANOTECHNOLOGY 2024:10.1038/s41565-024-01758-3. [PMID: 39187583 DOI: 10.1038/s41565-024-01758-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 07/15/2024] [Indexed: 08/28/2024]
Abstract
An immunosuppressive tumour microenvironment strongly influences response rates in patients receiving immune checkpoint blockade-based cancer immunotherapies, such as programmed death-1 (PD-1) and programmed death-ligand 1 (PD-L1). Here we demonstrate that metal-ion-chelating L-phenylalanine nanostructures synergize with short-term starvation (STS) to remodel the immunosuppressive microenvironment of breast and colorectal tumours. These nanostructures modulate the electrophysiological behaviour of dendritic cells and activate them through the NLRP3 inflammasome and calcium-mediated nuclear factor-κB pathway. STS promotes the cellular uptake of nanostructures through amino acid transporters and plays a key role in dendritic cell maturation and tumour-specific cytotoxic T lymphocyte responses. This study demonstrates the potential role of metal-ion-chelating L-phenylalanine nanostructures in activating immune responses and the effect of STS treatment in improving nanomaterial-mediated cancer immunotherapy.
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Affiliation(s)
- Mixiao Tan
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, People's Republic of China
- The Second Affiliated Hospital of Chongqing Medical University & Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing, People's Republic of China
| | - Guoliang Cao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, People's Republic of China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Rupeng Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Long Cheng
- The Second Affiliated Hospital of Chongqing Medical University & Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing, People's Republic of China
| | - Wenping Huang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, People's Republic of China
| | - Yue Yin
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, People's Republic of China
| | - Haixia Ma
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, People's Republic of China
| | - Shih-Hsin Ho
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, People's Republic of China
| | - Zhigang Wang
- The Second Affiliated Hospital of Chongqing Medical University & Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing, People's Republic of China
| | - Motao Zhu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, People's Republic of China
| | - Haitao Ran
- The Second Affiliated Hospital of Chongqing Medical University & Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing, People's Republic of China.
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, People's Republic of China.
- University of Chinese Academy of Sciences, Beijing, People's Republic of China.
| | - Hai Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, People's Republic of China.
- University of Chinese Academy of Sciences, Beijing, People's Republic of China.
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Du Q, Wu Y, Liao Y, Dong R, Shui S, Benjakul S, Zhang B. Investigation of the Alternations in the Muscle Quality of Swimming Crab ( Ovalipes punctatus) during Cold-Chain Transportation Using Physicochemical and TMT-Based Quantitative Proteomic Analysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:11820-11835. [PMID: 38710668 DOI: 10.1021/acs.jafc.4c02224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Physicochemical properties and protein alterations in Ovalipes punctatus during cold-chain transportation were examined via sensory scores, water-holding capacity (WHC), glucose (GLU) content, catalase (CAT) activity, urea nitrogen (UN) content, and tandem mass tag (TMT)-based proteomic analysis. The results revealed that sensory characteristics and texture of crab muscle deteriorated during transportation. Proteomic analysis revealed 442 and 470 different expressed proteins (DEPs) in crabs after 18 h (FC) and 36 h (DC) of transportation compared with live crabs (LC). Proteins related to muscle structure and amino acid metabolism significantly changed, as evidenced by the decreased WHC and sensory scores of crab muscle. Glycolysis, calcium signaling, and peroxisome pathways were upregulated in the FC/LC comparison, aligning with the changes in GLU content and CAT activity, revealing the stress response of energy metabolism and immune response in crabs during 0-18 h of transportation. The downregulated tricarboxylic acid (TCA) cycle and carcinogenesis-reactive oxygen species pathways were correlated with the decreasing trend in CAT activity, suggesting a gradual retardation in both energy and antioxidant metabolism in crabs during 18-36 h of transportation. Furthermore, the regulated purine nucleoside metabolic and nucleoside diphosphate-related processes, with the increasing changes in UN content, revealed the accumulation of metabolites in crabs.
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Affiliation(s)
- Qi Du
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China
- College of Food Science and Engineering, Ningbo University, Ningbo 315000, China
| | - Yingru Wu
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China
| | - Yueqin Liao
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China
| | - Ruyi Dong
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China
| | - Shanshan Shui
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China
| | - Soottawat Benjakul
- International Center of Excellence in Seafood Science and Innovation, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Bin Zhang
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China
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Han Y, Zhang W, Tang Y, Shi W, Liu Z, Lamine I, Zhang H, Liu J, Liu G. Triclosan exposure induces immunotoxic impacts by disrupting the immunometabolism, detoxification, and cellular homeostasis in blood clam (Tegillarca granosa). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 266:106778. [PMID: 38056281 DOI: 10.1016/j.aquatox.2023.106778] [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: 09/12/2023] [Revised: 11/16/2023] [Accepted: 11/23/2023] [Indexed: 12/08/2023]
Abstract
Omnipresent presence of triclosan (TCS) in aqueous environment puts a potential threat to organisms. However, it's poorly understood about its immunometabolic impacts of marine invertebrates. In present study, we use a representative bivalve blood clam (Tegillarca granosa) as a model, investigating the effects of TCS exposure at 20 and 200 μg/L for 28 days on immunometabolism, detoxification, and cellular homeostasis to explore feasible toxicity mechanisms. Results demonstrated that the clams exposed to TCS resulting in evident immunotoxic impacts on both cellular and humoral immune responses, through shifting metabolic pathways and substances, as well as suppressing the expressions of genes from the immune- and metabolism-related pathways. In addition, significant alterations in contents (or activity) of detoxification enzymes and the expression of key detoxification genes were detected in TCS-exposed clams. Moreover, exposure to TCS also disrupted cellular homeostasis of clams through increasing MDA contents and caspase activities, and promoting activation of the apoptosis-related genes. These findings suggested that TCS might induce immunotoxic impacts by disrupting the immunometabolism, detoxification, and cellular homeostasis.
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Affiliation(s)
- Yu Han
- School of life sciences, Central South University, Changsha, China, 410083; Hangzhou Normal University, Hangzhou, China, 311121; College of Animal Sciences, ZheJiang University, Hangzhou, China, 310058
| | - Weixia Zhang
- College of Animal Sciences, ZheJiang University, Hangzhou, China, 310058
| | - Yu Tang
- College of Animal Sciences, ZheJiang University, Hangzhou, China, 310058
| | - Wei Shi
- College of Animal Sciences, ZheJiang University, Hangzhou, China, 310058
| | - Zhiquan Liu
- Hangzhou Normal University, Hangzhou, China, 311121
| | - Imane Lamine
- Laboratory of Aquatic Systems, Marine and Continental Ecosystems,Department of Biology, Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco
| | | | - Jing Liu
- School of life sciences, Central South University, Changsha, China, 410083
| | - Guangxu Liu
- College of Animal Sciences, ZheJiang University, Hangzhou, China, 310058.
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Kim T, Ri S, Ju K, Shi W, Zhou W, Yu Y, Ri S, Ri H, Yun S, Ri J, Liu G. A C-type lectin with a single carbohydrate-recognition domain (CRD) containing unique QPN/WDD motifs from Tegillarca granosa is involved in the innate immune defense. FISH & SHELLFISH IMMUNOLOGY 2023; 142:109093. [PMID: 37722437 DOI: 10.1016/j.fsi.2023.109093] [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: 08/25/2023] [Revised: 09/12/2023] [Accepted: 09/16/2023] [Indexed: 09/20/2023]
Abstract
C-type lectins (CTLs), a superfamily of Ca2+-dependent carbohydrate-recognition proteins, serve as pattern recognition receptors (PRRs) in the immune response of many species. However, little is currently known about the CTLs of the commercially and ecologically important bivalve species, blood clam (Tegillarca granosa). In this study, a CTL (designated as TgCTL-1) with a single carbohydrate-recognition domain (CRD) containing unique QPN/WDD motifs was identified in the blood clam through transcriptome and whole-genome searching. Multiple alignment and phylogenetic analysis strongly suggested that TgCTL-1 was a new member of the CTL superfamily. Expression analysis demonstrated that TgCTL-1 was highly expressed in the hemocytes and visceral mass of the clam under normal condition. In addition, the expression of TgCTL-1 was shown to be significantly up-regulated upon pathogen challenge. Moreover, the recombinant TgCTL-1 (rTgCTL-1) displayed agglutinating and binding activities against both the gram-positive and gram-negative bacteria tested in a Ca2+-dependent manner. Furthermore, it was found that the in vitro phagocytic activity of hemocytes was significantly enhanced by rTgCTL-1. In general, our results showed that TgCTL-1 was an inducible acute-phase secretory protein, playing crucial roles in recognizing, agglutinating, and binding to pathogenic bacteria as well as modulating phagocytic activity of hemocytes in the innate immune defense of blood clam.
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Affiliation(s)
- Tongchol Kim
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China; College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, North Korea
| | - Sanghyok Ri
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China; College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, North Korea
| | - Kwangjin Ju
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China; College of Aquaculture, Wonsan Fisheries University, Wonsan, 99903, North Korea
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Weishang Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Yihan Yu
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Sangryong Ri
- College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, North Korea
| | - Hyoksong Ri
- College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, North Korea
| | - Songsu Yun
- College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, North Korea
| | - Junjin Ri
- College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, North Korea
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China.
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Yu Y, Tian D, Ri S, Kim T, Ju K, Zhang J, Teng S, Zhang W, Shi W, Liu G. Gamma-aminobutyric acid (GABA) suppresses hemocyte phagocytosis by binding to GABA receptors and modulating corresponding downstream pathways in blood clam, Tegillarca granosa. FISH & SHELLFISH IMMUNOLOGY 2023; 134:108608. [PMID: 36764632 DOI: 10.1016/j.fsi.2023.108608] [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: 01/03/2023] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Although accumulating data demonstrated that gamma-aminobutyric acid (GABA), an inhibitory neurotransmitter, plays an important regulatory role in immunity of vertebrates, its immunomodulatory function and mechanisms of action remain poorly understood in invertebrates such as bivalve mollusks. In this study, the effect of GABA on phagocytic activity of hemocytes was evaluated in a commercial bivalve species, Tegillarca granosa. Furthermore, the potential regulatory mechanism underpinning was investigated by assessing potential downstream targets. Data obtained demonstrated that in vitro GABA incubation significantly constrained the phagocytic activity of hemocytes. In addition, the GABA-induced suppression of phagocytosis was markedly relieved by blocking of GABAA and GABAB receptors using corresponding antagonists. Hemocytes incubated with lipopolysaccharides (LPS) and GABA had significant higher K+-Cl- cotransporter 2 (KCC2) content compared to the control. In addition, GABA treatment led to an elevation in intracellular Cl-, which was shown to be leveled down to normal by blocking the ionotropic GABAA receptor. Treatment with GABAA receptor antagonist also rescued the suppression of GABAA receptor-associated protein (GABARAP), KCC, TNF receptor associated factor 6 (TRAF6), inhibitor of nuclear factor kappa-B kinase subunit alpha (IKKα), and nuclear factor kappa B subunit 1 (NFκB) caused by GABA incubation. Furthermore, incubation of hemocytes with GABA resulted in a decrease in cAMP content, an increase in intracellular Ca2+, and downregulation of cAMP-dependent protein kinase (PKA), calmodulin kinase II (CAMK2), calmodulin (CaM), calcineurin (CaN), TRAF6, IKKα, and NFκB. All these above-mentioned changes were found to be evidently relieved by blocking the metabotropic G-protein-coupled GABAB receptor. Our results suggest GABA may play an inhibitory role on phagocytosis through binding to both GABAA and GABAB receptors, and subsequently regulating corresponding downstream pathways in bivalve invertebrates.
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Affiliation(s)
- Yihan Yu
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Dandan Tian
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Sanghyok Ri
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China; College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, North Korea
| | - Tongchol Kim
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China; College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, North Korea
| | - Kwangjin Ju
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China; College of Aquaculture, Wonsan Fisheries University, Wonsan, 999093, North Korea
| | - Jiongming Zhang
- Zhejiang Mariculture Research Institute, Wenzhou, 325005, PR China
| | | | - Weixia Zhang
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China.
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Yu Y, Tian D, Han Y, Huang L, Tang Y, Zhang W, Zhou W, Shi W, Yu Y, Liu G. Impacts of microplastics and carbamazepine on the shell formation of thick-shell mussels and the underlying mechanisms of action. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156442. [PMID: 35660597 DOI: 10.1016/j.scitotenv.2022.156442] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/26/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
Forming calcareous exoskeletons is crucial for the health and survival of calcifiers such as bivalves. However, the impacts of waterborne emergent pollutants on this important process remain largely unknown. In this study, the effects of two types of emergent pollutants, microplastics (MPs) and carbamazepine (CBZ), which are ubiquitously present in ocean environments, on shell formation were assessed in the thick-shell mussel (Mytilus coruscus) with a shell regeneration experiment. In addition, their impacts on the in vivo contents of ATP, Ca2+, carbonic anhydrase (CA), and bone morphogenetic protein receptor type-2 (BMPR2), the activity of phosphofructokinase (PFK) and Ca2+-ATPase, and the expression of shell-formation related genes were analyzed. The data collected demonstrated that shell regeneration after mechanical injury was significantly arrested by CBZ and/or MPs. Besides, all the physiological and molecular parameters investigated were markedly suppressed by these two pollutants. Furthermore, synergistic impacts on most of the parameters examined were observed between CBZ and MPs. Our results indicate that these two pollutants may disrupt shell formation by constraining the availability of raw materials and energy, inhibiting the formation of the organic shell matrix, and interfering with the regulation of crystallization, which may have far-reaching impacts on the health of marine calcifiers.
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Affiliation(s)
- Yihan Yu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Dandan Tian
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Yu Han
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Lin Huang
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Yu Tang
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Weixia Zhang
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Weishang Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Yingying Yu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China.
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Luo Y, Wang WX. Roles of hemocyte subpopulations in silver nanoparticle transformation and toxicity in the oysters Crassostrea hongkongensis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 305:119281. [PMID: 35413408 DOI: 10.1016/j.envpol.2022.119281] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/01/2022] [Accepted: 04/06/2022] [Indexed: 06/14/2023]
Abstract
Hemocytes are the main immune cells in bivalve mollusks and one of the sensitive targets for nanoparticle toxicity. Bivalve hemocytes consist of multiple functional heterogeneous cell types, but their different roles in immune system against foreign particles remain largely unknown. In order to clarify the different immune responses of hemocyte subpopulations to silver nanoparticles (AgNPs) and Ag ions, in this study, the Hong Kong oyster (Crassostrea hongkongensis) hemocytes were employed and separated into three subpopulations based on their cell size and granularity, including agranulocytes (R1), semigranulocytes (R2), and granulocytes (R3). We first demonstrated that AgNPs could rapidly enter into the oyster hemocytes within 3 h by phagocytosis process and resulted in different immune responses in hemocyte subpopulations. The most affected cell subtype by AgNPs was the granulocytes, followed by semigranulocytes, whereas agranulocytes were not affected following exposure to AgNPs. Interestingly, AgNPs induced the granule formation in semigranulocytes and further increased the proportion of granulocytes, whereas their ionic counterparts had no such effects on hemocyte composition, indicating the different detoxification mechanisms for nanoparticulate and ionic form. Following AgNP exposure, the dissolved Ag ions were accumulated in lysosomes and caused lysosomal dysfunction, indicating that lysosomes were the main targets for AgNP toxicity and the dissolved Ag ions were the main contributor of AgNP toxicity. Furthermore, AgNP exposure induced reactive oxygen production and impeded the lysosome function and phagocytosis in granulocytes, with impaired immunity system in oysters. Our study identified the different immune responses of oyster hemocyte subpopulations to AgNPs based on the in vitro short-term exposure assays, which may be applied to rapidly evaluate the ecotoxicological risks of different nanoparticles in aquatic systems.
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Affiliation(s)
- Yali Luo
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China
| | - Wen-Xiong Wang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China.
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Ri S, Zha S, Kim T, Ju K, Zhou W, Shi W, Wu M, Kim C, Bao Y, Sun C, Liu G. Identification, characterization, and antimicrobial activity of a novel big defensin discovered in a commercial bivalve mollusc, Tegillarca granosa. FISH & SHELLFISH IMMUNOLOGY 2022; 124:174-181. [PMID: 35398526 DOI: 10.1016/j.fsi.2022.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/08/2022] [Accepted: 04/03/2022] [Indexed: 06/14/2023]
Abstract
Molluscs, the second largest animal phylum on earth, primarily rely on cellular and humoral immune responses to fight against pathogen infection. Although antimicrobial peptides (AMPs) such as big defensin play crucial roles in the humoral immune response, it remains largely unknown in the ecological and economic important blood clam (Tegillarca granosa). In this study, a novel big defensin gene (TgBD) was identified in T. granosa through transcripts and whole genome searching. Bioinformatic analyses were conducted to explore the molecular characteristics of TgBD, and comparisons of TgBD with those reported in other molluscs were performed by multiple alignments and phylogenetic analysis. In addition, the expression patterns of TgBD in various tissues and upon bacterial challenge were investigated while the antimicrobial activity of synthetic N-terminal domain of TgBD was confirmed in vitro by radial diffusion experiment. Results obtained showed TgBD had an open reading frame (ORF) of 369 bp, encoding a prepropeptide containing a signal peptide and a propeptide. Similar to big defensins reported in other species, TgBD consists of a hydrophobic N-terminal domain containing β1-α1-α2-β2 folds and a cysteine-rich cationic C-terminal domain with three disulfide bonds between C1-C5, C2-C4, and C3-C6. Phylogenetic analysis showed that TgBD shared 76.80% similarity to its close relative ark shell (Scapharca broughtoni). In addition, TgBD expression was observed in all tissues investigated under normal conditions and was significantly induced by injection of Vibrio parahaemolyticus. Furthermore, synthetic N-terminal peptide of TgBD exhibited strong antimicrobial activity against Gram-positive bacteria tested. Our results indicated that TgBD is a constitutive and inducible acute phase AMP, which provides a universal and prompt protection for T. granosa.
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Affiliation(s)
- Sanghyok Ri
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China; College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, D.P.R, North Korea
| | - Shanjie Zha
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological & Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China; Ninghai Institute of Mariculture Breeding and Seed Industry, Zhejiang Wanli University, Ninghai, 315604, PR China
| | - Tongchol Kim
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China; College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, D.P.R, North Korea
| | - Kwangjin Ju
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China; College of Aquaculture, Wonsan Fisheries University, Wonsan, 999093, D.P.R, North Korea
| | - Weishang Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Myongsik Wu
- College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, D.P.R, North Korea
| | - Chunmi Kim
- College of Life Science, Kim Hyong Jik University of Education, Pyongyang, 99903, D.P.R, North Korea
| | - Yongbo Bao
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological & Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China; Ninghai Institute of Mariculture Breeding and Seed Industry, Zhejiang Wanli University, Ninghai, 315604, PR China
| | - Changsen Sun
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological & Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China; Ninghai Institute of Mariculture Breeding and Seed Industry, Zhejiang Wanli University, Ninghai, 315604, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China.
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9
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Han Y, Zhou W, Tang Y, Shi W, Shao Y, Ren P, Zhang J, Xiao G, Sun H, Liu G. Microplastics aggravate the bioaccumulation of three veterinary antibiotics in the thick shell mussel Mytilus coruscus and induce synergistic immunotoxic effects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 770:145273. [PMID: 33513513 DOI: 10.1016/j.scitotenv.2021.145273] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 01/02/2021] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
Marine bivalves living in pollution-prone coastal areas may be simultaneously coexposed to veterinary antibiotic residuals and microplastics (MPs). However, the synergistic effects of these two types of emergent pollutants have not been fully elucidated in mussel species. Therefore, the immunotoxic effects of the three representative antibiotics, oxytetracycline (OTC, 270 ng/L), florfenicol (FLO, 42 ng/L), and sulfamethoxazole (SMX, 140 ng/L), with and without the copresence of polystyrene MPs (0.26 mg/L, dimeter: 500 nm), were investigated in the thick shell mussel. Our data showed that the immunity was significantly hampered by exposure to the pollutants and MP-antibiotic coexposure induced synergistic immunotoxicity. For instance, compared to those treated with antibiotics (OTC, FLO, and SMX) alone, mussels coexposed to antibiotic and MPs had significantly lower phagocytic rate (further decline by approximately 28.80%, 34.21%, and 11.22%, respectively) and total hemocyte count (further reduced by approximately 37.45%, 61.67%, and 46.32%, respectively). Exposure to the pollutants tested also led to inductions in intracellular reactive oxygen species (ROS), decreases in the F-actin cytoskeleton, declines in the cell viability of hemocytes, and downregulation of cytoskeleton- and immune-related genes. In addition, mussels coexposed to antibiotic-MP accumulated significantly greater amounts of antibiotics, which may partially explain the synergic immunotoxic effect detected. Exposure to pollutants tested also led to suppression in the activity of glutathione-S-transferase (GST) and downregulation of detoxification-related genes whereas induction in the level of lipid peroxidation (indicated by MDA content) in gills, which may facilitate the entry whereas constrain the exclusion of antibiotics and therefore result in an elevation in accumulation of antibiotics.
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Affiliation(s)
- Yu Han
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Weishang Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yu Tang
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yanqing Shao
- Zhejiang Mariculture Research Institute, Wenzhou, 325005, China
| | - Peng Ren
- Zhejiang Mariculture Research Institute, Wenzhou, 325005, China
| | - Jiongming Zhang
- Zhejiang Mariculture Research Institute, Wenzhou, 325005, China
| | - Guoqiang Xiao
- Zhejiang Mariculture Research Institute, Wenzhou, 325005, China
| | - Hongxiang Sun
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
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10
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Zhou W, Tang Y, Du X, Han Y, Shi W, Sun S, Zhang W, Zheng H, Liu G. Fine polystyrene microplastics render immune responses more vulnerable to two veterinary antibiotics in a bivalve species. MARINE POLLUTION BULLETIN 2021; 164:111995. [PMID: 33493858 DOI: 10.1016/j.marpolbul.2021.111995] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 06/12/2023]
Abstract
Living in close proximity to the sediment of coastal areas, bivalves may be exposed to veterinary antibiotic residuals and microplastics (MPs) simultaneously. However, the immunotoxic impacts of veterinary antibiotics remain unknown in bivalves, let alone their interactions with MPs. Therefore, the immune responses of two representative veterinary antibiotics, oxytetracycline and florfenicol, was investigated in a bivalve species, the blood clam (Tegillarca granosa). The effects of the copresence of MPs on the immune responses triggered by these antibiotics were also analyzed. Results showed that exposure to antibiotics investigated led to significant alteration in hematic parameters and reduction in lectin content in serum. In addition to inducing ROS production, aggravating lipid peroxidation and DNA damage, and suppressing the hemocyte viability, antibiotic treatments also downregulated the expression of immune- and detoxification-related genes but upregulated apoptosis-related Caspase-3. Furthermore, the toxic impacts of antibiotics were found to be significantly increased by the copresence of MPs.
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Affiliation(s)
- Weishang Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Yu Tang
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Xueying Du
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Yu Han
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Shuge Sun
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Weixia Zhang
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Huoqing Zheng
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China.
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