1
|
Liao Z, Yang Z, Wang Y, He J, He Z, Zhang X, Buttino I, Qi P, Fan M, Guo B, Yan X, He M. Molecular characterization of peptidoglycan recognition proteins from Mytilus coruscus. FISH & SHELLFISH IMMUNOLOGY 2022; 131:612-623. [PMID: 36272520 DOI: 10.1016/j.fsi.2022.10.018] [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: 07/12/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Mytilus shows great immune resistance to various bacteria from the living waters, indicating a complex immune recognition mechanism against various microbes. Peptidoglycan recognition proteins (PGRPs) play an important role in the defense against invading microbes via the recognition of the immunogenic substance peptidoglycan (PGN). Therefore, eight PGRPs were identified from the gill transcriptome of Mytilus coruscus. The sequence features, expression pattern in various organs and larval development stages, and microbes induced expression profiles of these Mytilus PGRPs were determined. Our data revealed the constitutive expression of PGRPs in various organs with relative higher expression level in immune-related organs. The expression of PGRPs is developmentally regulated, and most PGRPs are undetectable in larvae stages. The expression level of most PGRPs was significantly increased with in vivo microbial challenges, showing strong response to Gram-positive strain in gill and digestive gland, strong response to Gram-negative strain in hemocytes, and relative weaker response to fungus in the three tested organs. In addition, the function analysis of the representative recombinant expressed PGRP (rMcPGRP-2) confirmed the antimicrobial and agglutination activities, showing the immune-related importance of PGRP in Mytilus. Our work suggests that Mytilus PGRPs can act as pattern recognition receptors to recognize the invading microorganisms and the antimicrobial effectors during the innate immune response of Mytilus.
Collapse
Affiliation(s)
- Zhi Liao
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China
| | - Zongxin Yang
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China
| | - Ying Wang
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China
| | - Jianyu He
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China
| | - Zhijiang He
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China
| | - Xiaolin Zhang
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China
| | - Isabella Buttino
- Italian Institute for Environmental Protection and Research (ISPRA), Via Vitaliano Brancati 48, 00144, Rome, Italy
| | - Pengzhi Qi
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China
| | - Meihua Fan
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China
| | - Baoying Guo
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China
| | - Xiaojun Yan
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China
| | - Menglan He
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, 316022, Zhejiang, China.
| |
Collapse
|
2
|
Sun Q, Jiang Y, Yan X, Fan M, Zhang X, Xu H, Liao Z. Molecular Characterization of a Novel Shell Matrix Protein With PDZ Domain From Mytilus coruscus. Front Physiol 2020; 11:543758. [PMID: 33123020 PMCID: PMC7573561 DOI: 10.3389/fphys.2020.543758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 09/04/2020] [Indexed: 11/16/2022] Open
Abstract
Mollusk shells are products of biomineralization and possess excellent mechanical properties, and shell matrix proteins (SMPs) have important functions in shell formation. A novel SMP with a PDZ domain (PDZ-domain-containing-protein-1, PDCP-1) was identified from the shell matrices of Mytilus coruscus. In this study, the gene expression, function, and location of PDCP-1 were analyzed. PDCP-1 was characterized as an ∼70 kDa protein with a PDZ (postsynaptic density/discs large/zonula occludes) domain and a ZM (ZASP-like motif) domain. The PDCP-1 gene has a high expression level and specific location in the foot, mantle and adductor muscle. Recombinantly expressed PDCP-1 (rPDCP-1) altered the morphology of calcite crystals, the polymorph of calcite crystals, binding with both calcite and aragonite crystals, and inhibition of the crystallization rate of calcite crystals. In addition, anti-rPDCP-1 antibody was prepared, and immunohistochemistry and immunofluorescence analyses revealed the specific location of PDCP-1 in the mantle, the adductor muscle, and the aragonite (nacre and myostracum) layer of the shell, suggesting multiple functions of PDCP-1 in biomineralization, muscle-shell attachment, and muscle attraction. Furthermore, pull-down analysis revealed 19 protein partners of PDCP-1 from the shell matrices, which accordingly provided a possible interaction network of PDCP-1 in the shell. These results expand the understanding of the functions of PDZ-domain-containing proteins (PDCPs) in biomineralization and the supramolecular chemistry that contributes to shell formation.
Collapse
|
3
|
Jiang Y, Sun Q, Fan M, He J, Zhang X, Xu H, Liao Z. Recombinant transgelin-like protein 1 from Mytilus shell induces formation of CaCO 3 polymorphic crystals in vitro. FEBS Open Bio 2020; 10:2216-2234. [PMID: 32902197 PMCID: PMC7530383 DOI: 10.1002/2211-5463.12972] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/31/2020] [Accepted: 09/03/2020] [Indexed: 11/23/2022] Open
Abstract
Transgelin is an actin cross-linking/gelling protein of the calponin family, which is associated with actin stress fibres, cell motility, adhesion and the maintenance of cell morphology. Transgelin-like proteins (TLPs) have also been identified as shell matrix proteins (SMPs) in several mollusc species; however, the functions of TLPs in biomineralization remain unknown. Transgelin-like protein 1 (TLP-1) was previously identified from the shell of Mytilus coruscus as a novel 19 kDa SMP with a calponin homology (CH) domain. To understand the role of TLP-1 in shell formation, the expression level and localization of the TLP-1 gene in biomineralization-related tissues were determined in this study. Furthermore, recombinant TLP-1 was expressed in a prokaryotic expression system with codon optimization, and an anti-rTLP-1 antibody was prepared based on the expressed recombinant TLP-1 (rTLP-1) protein. In vitro, rTLP-1 induced the formation of CaCO3 polymorphic crystals with distinct morphologies and inhibited crystallization rate and crystal interactions. Immunohistochemical, immunofluorescence, and pull-down analyses using the anti-rTLP-1 antibody revealed the specific locations of TLP-1 in biomineralization-related tissues and shell myostracum layer, and suggested the existence of a possible TLP-1 interaction network in the shell matrix. Our results are beneficial for understanding the functions of TLP-1, particularly through its CH domain, during shell mineralization.
Collapse
Affiliation(s)
- Yuting Jiang
- Laboratory of Marine Biology Protein EngineeringMarine Science and Technical CollegeZhejiang Ocean UniversityZhoushan CityChina
| | - Qi Sun
- Laboratory of Marine Biology Protein EngineeringMarine Science and Technical CollegeZhejiang Ocean UniversityZhoushan CityChina
| | - Meihua Fan
- Laboratory of Marine Biology Protein EngineeringMarine Science and Technical CollegeZhejiang Ocean UniversityZhoushan CityChina
| | - Jianyu He
- Department of BiologyUniversity of PisaCoNISMaItaly
| | - Xiaolin Zhang
- Laboratory of Marine Biology Protein EngineeringMarine Science and Technical CollegeZhejiang Ocean UniversityZhoushan CityChina
| | - Huanzhi Xu
- Laboratory of Marine Biology Protein EngineeringMarine Science and Technical CollegeZhejiang Ocean UniversityZhoushan CityChina
| | - Zhi Liao
- Laboratory of Marine Biology Protein EngineeringMarine Science and Technical CollegeZhejiang Ocean UniversityZhoushan CityChina
| |
Collapse
|