1
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Elhamouly M, Nii T, Isobe N, Yoshimura Y. Aging-associated increased nitric oxide production is a potential cause of inferior eggshell quality produced by aged laying hens. Theriogenology 2023; 205:63-72. [PMID: 37086586 DOI: 10.1016/j.theriogenology.2023.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/15/2023] [Accepted: 04/06/2023] [Indexed: 04/24/2023]
Abstract
It is important to prolong the productive life of laying hens without compromising their welfare. Therefore, in this study, we aimed to identify the cause for inferior quality egg production of aged hens by investigating the aging-associated molecular changes related to eggshell formation in the isthmic and uterine mucosae and determining whether nitric oxide plays a role in decreasing the quality of eggs produced by aged hens. Young (35 weeks old) and aged (130 weeks old) White Leghorn laying hens were used in this study to determine the effects of age on the expression of proteins related to eggshell membranes formation in the isthmus and eggshell biomineralization and nitric oxide production in the uterus. Nitric oxide synthesis during the ovulatory cycle was examined in twenty-five laying hens (46-52 weeks old) euthanized at 0, 4, 7, 16, and 24 h after oviposition. S-Nitroso-N-acetylpenicillamine (a nitric oxide donor) was added to the cultured isthmic and uterine mucosal cells to examine the effects of nitric oxide on the expression of genes related to eggshell membranes formation and eggshell biomineralization, respectively. The results showed that the protein abundance of collagen I and V in the isthmic mucosa and collagen V in the eggshell membranes were lower in aged hens than in young hens. The mRNA expression levels of calbindin, osteopontin, and ovocalyxin-36 and the protein abundance of calbindin and carbonic anhydrase-2 were lower in the uterine mucosa of aged hens than in that of young hens. Nitric oxide synthesis was higher in the uterine mucosa of aged hens than in that of young hens. Nitric oxide downregulated the mRNA expression levels of osteopontin and ovocalyxin-36 in cultured uterine mucosal cells. Our results indicated that the eggshell quality decreases with aging due to molecular changes in the uterine mucosa affecting the eggshell membrane formation and eggshell biomineralization. Moreover, nitric oxide overproduction may play a role in this dysfunction.
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Affiliation(s)
- M Elhamouly
- Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Egypt; Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, 739-8528, Japan
| | - T Nii
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, 739-8528, Japan
| | - N Isobe
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, 739-8528, Japan
| | - Y Yoshimura
- Hiroshima Study Center, The Open University of Japan, Hiroshima, 730-0053, Japan.
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2
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Meng Y, Qiu N, Guyonnet V, Mine Y. Unveiling and application of the chicken egg proteome: An overview on a two-decade achievement. Food Chem 2022; 393:133403. [PMID: 35689922 DOI: 10.1016/j.foodchem.2022.133403] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 05/19/2022] [Accepted: 06/03/2022] [Indexed: 11/17/2022]
Abstract
Egg proteins are not only the most complete and ideal form of protein for human or embryo nutrition but also play the vital role in the food industry. Egg proteins are subjected to many potential changes under various conditions, which may further alter the nutritional value, physicochemical-properties, and bioactivities of proteins. Recent advances in our understanding of the proteome of raw egg matrix from different species and dynamic changes occurring during storage and incubation are developing rapidly. This review provides a comprehensive overview of the main characteristics of chicken egg proteome, covering all its components and applications under various conditions, such as markers detection, egg quality evaluation, genetic and biological unknown identification, and embryonic nutritional supplementation, which not only contributes to our in-depth understanding of each constituent functionality of proteome, but also provides information to increase the value to egg industry.
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Affiliation(s)
- Yaqi Meng
- Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Ning Qiu
- Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Vincent Guyonnet
- FFI Consulting Ltd, 2488 Lyn Road, Brockville, ON K6V 5T3, Canada
| | - Yoshinori Mine
- Department of Food Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
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3
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Moreau T, Gautron J, Hincke MT, Monget P, Réhault-Godbert S, Guyot N. Antimicrobial Proteins and Peptides in Avian Eggshell: Structural Diversity and Potential Roles in Biomineralization. Front Immunol 2022; 13:946428. [PMID: 35967448 PMCID: PMC9363672 DOI: 10.3389/fimmu.2022.946428] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/22/2022] [Indexed: 11/21/2022] Open
Abstract
The calcitic avian eggshell provides physical protection for the embryo during its development, but also regulates water and gaseous exchange, and is a calcium source for bone mineralization. The calcified eggshell has been extensively investigated in the chicken. It is characterized by an inventory of more than 900 matrix proteins. In addition to proteins involved in shell mineralization and regulation of its microstructure, the shell also contains numerous antimicrobial proteins and peptides (AMPPs) including lectin-like proteins, Bacterial Permeability Increasing/Lipopolysaccharide Binding Protein/PLUNC family proteins, defensins, antiproteases, and chelators, which contribute to the innate immune protection of the egg. In parallel, some of these proteins are thought to be crucial determinants of the eggshell texture and its resulting mechanical properties. During the progressive solubilization of the inner mineralized eggshell during embryonic development (to provide calcium to the embryo), some antimicrobials may be released simultaneously to reinforce egg defense and protect the egg from contamination by external pathogens, through a weakened eggshell. This review provides a comprehensive overview of the diversity of avian eggshell AMPPs, their three-dimensional structures and their mechanism of antimicrobial activity. The published chicken eggshell proteome databases are integrated for a comprehensive inventory of its AMPPs. Their biochemical features, potential dual function as antimicrobials and as regulators of eggshell biomineralization, and their phylogenetic evolution will be described and discussed with regard to their three-dimensional structural characteristics. Finally, the repertoire of chicken eggshell AMPPs are compared to orthologs identified in other avian and non-avian eggshells. This approach sheds light on the similarities and differences exhibited by AMPPs, depending on bird species, and leads to a better understanding of their sequential or dual role in biomineralization and innate immunity.
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Affiliation(s)
- Thierry Moreau
- INRAE, Université de Tours, BOA, Nouzilly, France
- *Correspondence: Nicolas Guyot, ; Thierry Moreau,
| | - Joël Gautron
- INRAE, Université de Tours, BOA, Nouzilly, France
| | - Maxwell T. Hincke
- Department of Innovation in Medical Education, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Philippe Monget
- INRAE, CNRS, IFCE, Université de Tours, PRC, Nouzilly, France
| | | | - Nicolas Guyot
- INRAE, Université de Tours, BOA, Nouzilly, France
- *Correspondence: Nicolas Guyot, ; Thierry Moreau,
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4
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Wang X, Zhu P, Sun Z, Zhang J, Sun C. Uterine Metabolomic Analysis for the Regulation of Eggshell Calcification in Chickens. Metabolites 2021; 11:575. [PMID: 34564391 PMCID: PMC8469744 DOI: 10.3390/metabo11090575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/22/2021] [Accepted: 08/23/2021] [Indexed: 11/29/2022] Open
Abstract
Eggshell quality is economically important for table eggs and functionally indispensable for hatching eggs. During the formation of eggshell in the uterus, organic matrixes in uterine fluid can control and modify the formation of calcified eggshell. At present, there are limited studies focusing on the effect of uterine organic metabolites on eggshell quality. In this study, an LC-MS-based metabolomic technology was performed to identify the crucial uterine metabolites that differently presented in hens producing eggs with divergent eggshell quality (eggshell strength, thickness, and weight). More than 1000 metabolites were identified in uterine fluid, and six putative metabolites, including phosphatidylcholine, diacylglycerol, verapamil, risedronate, coproporphyrinogen III, and biliverdin, were screened to play crucial roles in eggshell calcification. Then, two trials for oral administration and in vitro calcite crystal growth were conducted to verify the effect of potential different metabolites on the eggshell quality. Verapamil has a temporary effect on decreasing eggshell strength and eggshell thickness. Coproporphyrinogen III could induce smaller calcite crystals to improve eggshell strength while biliverdin could modify crystal morphology by forming rougher faces and rounder edges to strengthen the eggshell. The present study gives us new insight to understand the role of uterine fluid matrixes in eggshell calcification.
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Affiliation(s)
- Xiqiong Wang
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (X.W.); (P.Z.); (J.Z.)
| | - Ping Zhu
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (X.W.); (P.Z.); (J.Z.)
| | - Zhihua Sun
- National Animal Husbandry Service, Ministry of Agriculture and Rural Affairs, Beijing 100125, China;
| | - Junnan Zhang
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (X.W.); (P.Z.); (J.Z.)
| | - Congjiao Sun
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (X.W.); (P.Z.); (J.Z.)
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5
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Le Roy N, Stapane L, Gautron J, Hincke MT. Evolution of the Avian Eggshell Biomineralization Protein Toolkit - New Insights From Multi-Omics. Front Genet 2021; 12:672433. [PMID: 34046059 PMCID: PMC8144736 DOI: 10.3389/fgene.2021.672433] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 04/08/2021] [Indexed: 11/13/2022] Open
Abstract
The avian eggshell is a remarkable biomineral, which is essential for avian reproduction; its properties permit embryonic development in the desiccating terrestrial environment, and moreover, are critically important to preserve unfertilized egg quality for human consumption. This calcium carbonate (CaCO3) bioceramic is made of 95% calcite and 3.5% organic matrix; it protects the egg contents against microbial penetration and mechanical damage, allows gaseous exchange, and provides calcium for development of the embryonic skeleton. In vertebrates, eggshell occurs in the Sauropsida and in a lesser extent in Mammalia taxa; avian eggshell calcification is one of the fastest known CaCO3 biomineralization processes, and results in a material with excellent mechanical properties. Thus, its study has triggered a strong interest from the researcher community. The investigation of eggshell biomineralization in birds over the past decades has led to detailed characterization of its protein and mineral constituents. Recently, our understanding of this process has been significantly improved using high-throughput technologies (i.e., proteomics, transcriptomics, genomics, and bioinformatics). Presently, more or less complete eggshell proteomes are available for nine birds, and therefore, key proteins that comprise the eggshell biomineralization toolkit are beginning to be identified. In this article, we review current knowledge on organic matrix components from calcified eggshell. We use these data to analyze the evolution of selected matrix proteins and underline their role in the biological toolkit required for eggshell calcification in avian species. Amongst the panel of eggshell-associated proteins, key functional domains are present such as calcium-binding, vesicle-binding and protein-binding. These technical advances, combined with progress in mineral ultrastructure analyses, have opened the way for new hypotheses of mineral nucleation and crystal growth in formation of the avian eggshell, including transfer of amorphous CaCO3 in vesicles from uterine cells to the eggshell mineralization site. The enrichment of multi-omics datasets for bird species is critical to understand the evolutionary context for development of CaCO3 biomineralization in metazoans, leading to the acquisition of the robust eggshell in birds (and formerly dinosaurs).
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Affiliation(s)
| | | | | | - Maxwell T Hincke
- Department of Innovation in Medical Education, University of Ottawa, Ottawa, ON, Canada.,Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
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6
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Gautron J, Stapane L, Le Roy N, Nys Y, Rodriguez-Navarro AB, Hincke MT. Avian eggshell biomineralization: an update on its structure, mineralogy and protein tool kit. BMC Mol Cell Biol 2021; 22:11. [PMID: 33579194 PMCID: PMC7881572 DOI: 10.1186/s12860-021-00350-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 01/31/2021] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND The avian eggshell is a natural protective envelope that relies on the phenomenon of biomineralization for its formation. The shell is made of calcium carbonate in the form of calcite, which contains hundreds of proteins that interact with the mineral phase controlling its formation and structural organization, and thus determine the mechanical properties of the mature biomaterial. We describe its mineralogy, structure and the regulatory interactions that integrate the mineral and organic constituents during eggshell biomineralization. Main Body. We underline recent evidence for vesicular transfer of amorphous calcium carbonate (ACC), as a new pathway to ensure the active and continuous supply of the ions necessary for shell mineralization. Currently more than 900 proteins and thousands of upregulated transcripts have been identified during chicken eggshell formation. Bioinformatic predictions address their functionality during the biomineralization process. In addition, we describe matrix protein quantification to understand their role during the key spatially- and temporally- regulated events of shell mineralization. Finally, we propose an updated scheme with a global scenario encompassing the mechanisms of avian eggshell mineralization. CONCLUSION With this large dataset at hand, it should now be possible to determine specific motifs, domains or proteins and peptide sequences that perform a critical function during avian eggshell biomineralization. The integration of this insight with genomic data (non-synonymous single nucleotide polymorphisms) and precise phenotyping (shell biomechanical parameters) on pure selected lines will lead to consistently better-quality eggshell characteristics for improved food safety. This information will also address the question of how the evolutionary-optimized chicken eggshell matrix proteins affect and regulate calcium carbonate mineralization as a good example of biomimetic and bio-inspired material design.
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Affiliation(s)
- J Gautron
- INRAE, Université de Tours, BOA, 37380, Nouzilly, France.
| | - L Stapane
- INRAE, Université de Tours, BOA, 37380, Nouzilly, France
| | - N Le Roy
- INRAE, Université de Tours, BOA, 37380, Nouzilly, France
| | - Y Nys
- INRAE, Université de Tours, BOA, 37380, Nouzilly, France
| | - A B Rodriguez-Navarro
- Departmento de Mineralogia y Petrologia, Universidad de Granada, 18071, Granada, Spain
| | - M T Hincke
- Department of Innovation in Medical Education, and Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, K1H8M5, Canada
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7
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Schytte GN, Christensen B, Bregenov I, Kjøge K, Scavenius C, Petersen SV, Enghild JJ, Sørensen ES. FAM20C phosphorylation of the RGDSVVYGLR motif in osteopontin inhibits interaction with the αvβ3 integrin. J Cell Biochem 2020; 121:4809-4818. [PMID: 32115754 DOI: 10.1002/jcb.29708] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 02/10/2020] [Indexed: 01/13/2023]
Abstract
Osteopontin (OPN) is a ubiquitously expressed, multifunctional, and highly phosphorylated protein. OPN contains two neighboring integrin-binding motifs, RGD and SVVYGLR, which mediate interaction with cells. Phosphorylation and proteolytic processing affect the integrin-binding activities of OPN. Here we report that the kinase, FAM20C, phosphorylates Ser146 in the 143 RGDSVVYGLR152 motif of OPN and that Ser146 is phosphorylated in vivo in human and bovine milk. Ser146 is located right next to the RGD motif and close by the regulatory thrombin and plasmin cleavage sites in the OPN sequence. Phosphorylation of Ser146 could potentially affect the proteolytic processing and the integrin-binding activities of OPN. We show that phosphorylation of Ser146 does not affect the susceptibility of OPN for thrombin or plasmin cleavage. However, phosphorylation of Ser146 significantly reduces the RGD-mediated interaction with the αv β3 integrin in MDA-MB-435 and Moαv cells. This suggests a new mechanism by which specific phosphorylation of OPN can regulate interaction with the αv β3 integrin and thereby affect OPN-cell interaction.
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Affiliation(s)
- Gitte N Schytte
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Brian Christensen
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Ida Bregenov
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Katarzyna Kjøge
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Carsten Scavenius
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
- Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| | | | - Jan J Enghild
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
- Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| | - Esben S Sørensen
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
- Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
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8
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Yang R, Geng F, Huang X, Qiu N, Li S, Teng H, Chen L, Song H, Huang Q. Integrated proteomic, phosphoproteomic and N-glycoproteomic analyses of chicken eggshell matrix. Food Chem 2020; 330:127167. [PMID: 32531632 DOI: 10.1016/j.foodchem.2020.127167] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 04/16/2020] [Accepted: 05/25/2020] [Indexed: 01/28/2023]
Abstract
Eggshell matrix (EM) proteins play an important biological role in eggshell mineralization and embryo development. Many studies have demonstrated that some matrix proteins undergo posttranslational modifications, including phosphorylation and glycosylation, which have important regulatory effects on the functional properties of the proteins. Systematic analysis of the proteome, the phosphorylated modified proteome and the glycosylated modified proteome of the chicken EM was performed using a proteomics strategy. A total of 112 phosphorylation sites from 69 phosphoproteins and 297 N-glycosylation sites from 182 N-glycoproteins were identified in the chicken EM. Among all these identified modified proteins, 129 were not identified in the proteome (547 proteins). Therefore, a total of 676 EM proteins were identified in this study. Gene ontology (GO) enrichment analysis indicated that EM proteins and phosphoproteins were mainly enriched in regulation of enzyme activity, while EM N-glycoproteins were enriched in immune response regulation.
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Affiliation(s)
- Ran Yang
- Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Fang Geng
- Meat Processing Key Laboratory of Sichuan Province, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, Sichuan 610106, China.
| | - Xiang Huang
- Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Ning Qiu
- National R&D Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China.
| | - Shugang Li
- Key Laboratory of Fermentation Engineering, Ministry of Education, Hubei University of Technology, Wuhan, Hubei 430068, China.
| | - Hui Teng
- Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Lei Chen
- Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Hongbo Song
- Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Qun Huang
- Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
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9
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Sun Y, Jin H, Sun H, Sheng L. A Comprehensive Identification of Chicken Egg White Phosphoproteomics Based on a Novel Digestion Approach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:9213-9222. [PMID: 32786861 DOI: 10.1021/acs.jafc.0c03174] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
There are plenty of phosphoproteins in chicken egg white (CEW), which are of great significance for the biological activity and function of CEW. In this study, phosphorylated proteins in CEW were identified and analyzed based on two digestion strategies (trypsin and trypsin/glutamyl endoproteinase). Besides, the enrichment strategy of immobilized metal affinity chromatography was used, and phosphopeptides were identified by nano liquid chromatography/tandem mass spectrometry. A total of 189 phosphosites mapped onto 166 phosphopeptides corresponding to 96 phosphoproteins were identified. Gene ontology analysis suggested that these phosphoproteins of CEW mainly participated in biological processes such as "cell process", "biological regulation", and "response to stimulus". Moreover, the phosphoproteins of CEW were involved in molecular functions, primarily including "binding" and "catalytic activity". On the basis of the available literature, the research was the first comprehensive identification of chicken egg white phosphoproteins. This study further enriched the identification of phosphoproteins in CEW and laid a foundation for the subsequent study of phosphoproteins.
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Affiliation(s)
- Yi Sun
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P. R. China
| | - Haobo Jin
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P. R. China
| | - Haohao Sun
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P. R. China
| | - Long Sheng
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P. R. China
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10
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Ramzan F, Klees S, Schmitt AO, Cavero D, Gültas M. Identification of Age-Specific and Common Key Regulatory Mechanisms Governing Eggshell Strength in Chicken Using Random Forests. Genes (Basel) 2020; 11:genes11040464. [PMID: 32344666 PMCID: PMC7230204 DOI: 10.3390/genes11040464] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/08/2020] [Accepted: 04/21/2020] [Indexed: 12/21/2022] Open
Abstract
In today's chicken egg industry, maintaining the strength of eggshells in longer laying cycles is pivotal for improving the persistency of egg laying. Eggshell development and mineralization underlie a complex regulatory interplay of various proteins and signaling cascades involving multiple organ systems. Understanding the regulatory mechanisms influencing this dynamic trait over time is imperative, yet scarce. To investigate the temporal changes in the signaling cascades, we considered eggshell strength at two different time points during the egg production cycle and studied the genotype-phenotype associations by employing the Random Forests algorithm on chicken genotypic data. For the analysis of corresponding genes, we adopted a well established systems biology approach to delineate gene regulatory pathways and master regulators underlying this important trait. Our results indicate that, while some of the master regulators (Slc22a1 and Sox11) and pathways are common at different laying stages of chicken, others (e.g., Scn11a, St8sia2, or the TGF- β pathway) represent age-specific functions. Overall, our results provide: (i) significant insights into age-specific and common molecular mechanisms underlying the regulation of eggshell strength; and (ii) new breeding targets to improve the eggshell quality during the later stages of the chicken production cycle.
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Affiliation(s)
- Faisal Ramzan
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (F.R.); (S.K.); (A.O.S.)
- Department of Animal Breeding and Genetics, University of Agriculture Faisalabad, 38000 Faisalabad, Pakistan
| | - Selina Klees
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (F.R.); (S.K.); (A.O.S.)
| | - Armin Otto Schmitt
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (F.R.); (S.K.); (A.O.S.)
- Center for Integrated Breeding Research (CiBreed), Albrecht-Thaer-Weg 3, Georg-August University, 37075 Göttingen, Germany
| | | | - Mehmet Gültas
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (F.R.); (S.K.); (A.O.S.)
- Center for Integrated Breeding Research (CiBreed), Albrecht-Thaer-Weg 3, Georg-August University, 37075 Göttingen, Germany
- Correspondence:
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11
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A multi-approach peptidomic analysis of hen egg white reveals novel putative bioactive molecules. J Proteomics 2020; 215:103646. [PMID: 31927067 DOI: 10.1016/j.jprot.2020.103646] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/25/2019] [Accepted: 01/08/2020] [Indexed: 12/31/2022]
Abstract
Chicken egg white is a raw material broadly used as additive for the preparation of food and cosmetoceutical products. To describe its molecular properties, various proteomic investigations were performed in the last decade characterizing highly abundant components. No peptidomic counterparts were accomplished so far; scientific literature only reports on the characterization of specific bioactive peptides or preparations from egg white and its hydrolysates, which was performed through dedicated functional assays. In this study, a broad description of the egg white peptidome at 24, 336 and 672 h after laying was achieved using three peptide extraction procedures, which were combined with MALDI-TOF-TOF-MS and nanoLC-ESI-Q-Orbitrap-MS/MS analyses. In the whole, 506 peptides were characterized; they mostly resulted from the physiological degradation of intact proteins following the activity of endoprotease ArgC-, trypsin- and plasmin-like enzymes. Eventual detection of peptide post-translational modifications also provided structural information on parental proteins. When analyzed by bioinformatics and/or compared with literature data, identified peptides allowed recognizing a number of protein fragments associated with different hypothetical biological activities. These results confirmed previous observations regarding functional characteristics of egg white unfractionated preparations or purified molecules, emphasizing the useful application of this raw material in human nutrition and cosmetics. Finally, a comparative label-free peptidomic evaluation of samples stored for different times under refrigeration identified 31 peptides showing significant quantitative changes during storage. BIOLOGICAL SIGNIFICANCE: This study provided the largest inventory of peptides described in chicken egg while so far. In addition, it identified a number of protein fragments associated with hypothetical antihypertensive, antioxidant, antiinflammatory, antimicrobial, anticancer, antiviral, antibiofilm, calcium-binding, antidiabetic, antithrombotic, adipogenic differentiating, stimulating/immunostimulating, hormonal, lipid-binding and cell adhesion-affecting activities. These results confirmed previous observations regarding functional characteristics of egg white unfractionated preparations or purified molecules, emphasizing the useful application of this raw material in human nutrition and cosmetics.
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12
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Yin Z, Lian L, Zhu F, Zhang ZH, Hincke M, Yang N, Hou ZC. The transcriptome landscapes of ovary and three oviduct segments during chicken (Gallus gallus) egg formation. Genomics 2020; 112:243-251. [DOI: 10.1016/j.ygeno.2019.02.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 01/12/2019] [Accepted: 02/06/2019] [Indexed: 02/08/2023]
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13
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Sun H, Qiu N, Keast R, Wang H, Li B, Huang Q, Li S. Comparative Quantitative Phosphoproteomic Analysis of the Chicken Egg during Incubation Based on Tandem Mass Tag Labeling. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:13353-13361. [PMID: 31682436 DOI: 10.1021/acs.jafc.9b04638] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Protein phosphorylation plays an important role in protein structure and function. To investigate the role of egg protein phosphorylation in chicken embryonic development, a comparative and quantitative phosphoproteomic analysis of fertilized chicken egg white and yolk was performed during incubation. Overall, 215 phosphosites mapped onto 205 phosphopeptides corresponding to 100 phosphoproteins were identified. Among these phosphoproteins, 123 phosphosites from 62 egg proteins were found significantly changed (p < 0.05) at day 12 during incubation. Furthermore, GO analysis suggested that these differentially phosphorylated proteins were associated with various molecular functions, primarily including binding, molecular function regulator, and transport activity. Such findings in this study improved our understanding of the protein molecular functions involved in chicken embryonic development from a protein phosphorylation perspective.
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Affiliation(s)
- Haohao Sun
- Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , People's Republic of China
| | - Ning Qiu
- Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , People's Republic of China
| | - Russell Keast
- Centre for Advanced Sensory Science, School of Exercise and Nutrition Sciences , Deakin University , Burwood , Victoria 3125 , Australia
| | - Hong Wang
- Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , People's Republic of China
| | - Bin Li
- Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science and Technology , Huazhong Agricultural University , Wuhan 430070 , People's Republic of China
| | - Qun Huang
- College of Food Science , Fujian Agriculture and Forestry University , Fuzhou 350000 , People's Republic of China
| | - Shugang Li
- Faculty of Light Industry, School of Biological Engineering and Food , Hubei University of Technology , Wuhan 430068 , People's Republic of China
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14
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Identification of new chicken egg proteins by mass spectrometry-based proteomic analysis. WORLD POULTRY SCI J 2019. [DOI: 10.1017/s0043933907001808] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Guinea fowl eggshell quantitative proteomics yield new findings related to its unique structural characteristics and superior mechanical properties. J Proteomics 2019; 209:103511. [PMID: 31493547 DOI: 10.1016/j.jprot.2019.103511] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/26/2019] [Accepted: 08/31/2019] [Indexed: 01/13/2023]
Abstract
The Guinea fowl eggshell is a bioceramic material with the remarkable mechanical property of being twice as strong as the chicken eggshell. Both eggshells are composed of 95% calcite and 3.5% organic matrix, which control its structural organization. Chicken eggshell is made of columnar calcite crystals arranged vertically. In the Guinea fowl, the same structure is observed in its inner half, followed by a dramatic change in crystal size and orientation in the outer region. Guinea fowl eggshell is thicker than chicken eggshell. Both structure and shell thickness confer a superior resistance to breakage compared to eggshells of other bird species. To understand the underlying mechanisms controlling the structural organization of this highly resistant material, we used quantitative proteomics to analyze the protein composition of the Guinea fowl eggshell organic matrix at key stages of the biomineralization process. We identified 149 proteins, which were compared to other bird eggshell proteomes and analyzed their potential functions. Among the 149 proteins, 9 are unique to Guinea fowl, some are involved in the control of the calcite precipitation (Lysozyme, Ovocleidin-17-like, Ovocleidin-116 and Ovalbumin), 61 are only found in the zone of microstructure shift and 17 are more abundant in this zone. SIGNIFICANCE: The avian eggshell is a critical physical barrier to protect the contents of this autonomous reproductive enclosure from physical and microbial assault. The Guinea fowl (Numida meleagris) eggshell exhibits a unique microstructure (texture), which confers exceptional mechanical properties compared to eggshells of other species. In order to understand the mechanisms that regulate formation of this texture in the Guinea fowl eggshell, we performed comparative quantitative proteomics at key stages of shell mineralization and particularly during the dramatic shift in shell microstructure. We demonstrate that the Guinea fowl eggshell proteome comprises 149 proteins, of which 61 were specifically associated with the change in size and orientation of calcite crystals. Comparative proteomics analysis with eggshell of other bird species leads to new insights into the biomineralization process. Moreover, our data represents a list of organic compounds as potential additives to regulate material design for industrial fabrication of ceramics. This information also provides molecular markers for efficient genomic selection of chicken strains to lay eggs with improved shell mechanical properties for enhanced food safety.
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16
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Ruiz-Agudo C, Lutz J, Keckeis P, King M, Marx A, Gebauer D. Ubiquitin Designer Proteins as a New Additive Generation toward Controlling Crystallization. J Am Chem Soc 2019; 141:12240-12245. [PMID: 31321970 DOI: 10.1021/jacs.9b06473] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Proteins controlling mineralization in vivo are diverse, suggesting that there are various ways by which mineralization can be directed in bioinspired approaches. While well-defined three-dimensional (3D) structures occur in biomineralization proteins, the design of synthetic, soluble, bioinspired macromolecules with specific, reproducible, and predictable 3D arrangements of mineral-interacting functions poses an ultimate challenge. Thus, the question of how certain arrangements of such functions on protein surfaces influence mineralization and in what ways specific alterations subsequently affect this process remains elusive. Here we used genetically engineered ubiquitin (Ub) proteins in order to overcome the limitations of generic bioinspired additive systems. By advancing existing protocols, we introduced an unnatural amino acid and subsequently mineral-interacting functions via selective-pressure incorporation and click chemistry, respectively, without affecting the Ub secondary structure. Indeed, as-obtained Ub with three phosphate functions at defined positions shows unique effects based on a yet-unmatched capability toward the stabilization of a film of a dense liquid mineral phase visible even with the naked eye and its transformation into amorphous nanoparticles and afterward crystals with complex shapes. We thereby demonstrate that Ub designer proteins pose a unique new generation of crystallization additives where the 3D arrangement of mineral-interacting functions can be designed at will, promising their future use for programmable, target-oriented mineralization control.
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Affiliation(s)
| | - Joachim Lutz
- Department of Chemistry , University of Konstanz , 78457 Konstanz , Germany
| | - Philipp Keckeis
- Department of Chemistry , University of Konstanz , 78457 Konstanz , Germany
| | - Michael King
- Department of Chemistry , University of Konstanz , 78457 Konstanz , Germany
| | - Andreas Marx
- Department of Chemistry , University of Konstanz , 78457 Konstanz , Germany
| | - Denis Gebauer
- Department of Chemistry , University of Konstanz , 78457 Konstanz , Germany
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17
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Ostertag E, Scholz M, Klein J, Rebner K, Oelkrug D. Pigmentation of White, Brown, and Green Chicken Eggshells Analyzed by Reflectance, Transmittance, and Fluorescence Spectroscopy. ChemistryOpen 2019; 8:1084-1093. [PMID: 31406655 PMCID: PMC6682939 DOI: 10.1002/open.201900154] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/24/2019] [Indexed: 12/19/2022] Open
Abstract
We report on the reflectance, transmittance and fluorescence spectra (λ=200-1200 nm) of four types of chicken eggshells (white, brown, light green, dark green) measured in situ without pretreatment and after ablation of 20-100 μm of the outer shell regions. The color pigment protoporphyrin IX (PPIX) is embedded in the protein phase of all four shell types as highly fluorescent monomers, in the white and light green shells additionally as non-fluorescent dimers, and in the brown and dark green shells mainly as non-fluorescent poly-aggregates. The green shell colors are formed from an approximately equimolar mixture of PPIX and biliverdin. The axial distribution of protein and colorpigments were evaluated from the combined reflectances of both the outer and inner shell surfaces, as well as from the transmittances. For the data generation we used the radiative transfer model in the random walk and Kubelka-Munk approaches.
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Affiliation(s)
- Edwin Ostertag
- Process Analysis and Technology (PA&T)Reutlingen UniversityAlteburgstr. 15072762ReutlingenGermany
| | - Miriam Scholz
- Process Analysis and Technology (PA&T)Reutlingen UniversityAlteburgstr. 15072762ReutlingenGermany
| | - Julia Klein
- Process Analysis and Technology (PA&T)Reutlingen UniversityAlteburgstr. 15072762ReutlingenGermany
| | - Karsten Rebner
- Process Analysis and Technology (PA&T)Reutlingen UniversityAlteburgstr. 15072762ReutlingenGermany
| | - Dieter Oelkrug
- Institute of Physical and Theoretical ChemistryUniversity of TübingenAuf der Morgenstelle 1872076TübingenGermany
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18
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Stapane L, Le Roy N, Hincke MT, Gautron J. The glycoproteins EDIL3 and MFGE8 regulate vesicle-mediated eggshell calcification in a new model for avian biomineralization. J Biol Chem 2019; 294:14526-14545. [PMID: 31358619 DOI: 10.1074/jbc.ra119.009799] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/26/2019] [Indexed: 11/06/2022] Open
Abstract
The avian eggshell is a critical physical barrier, which permits extra-uterine development of the embryo. Its formation involves the fastest known biomineralization process in vertebrates. The eggshell consists of proteins and proteoglycans that interact with the mineral phase to impart its specific microstructure and mechanical properties. In this study, we investigated the role of epidermal growth factor (EGF)-like repeats and discoidin-like domains 3 (EDIL3) and milk fat globule-EGF factor 8 (MFGE8), two glycoproteins that are consistently detected in eggshell proteomes. We verified their common evolutionary history and identified the timing of the duplication event giving rise to these two distinct proteins. Edil3/mfge8 chromosomal locations revealed a nested syntenous relationship with other genes (hapln1/hapln3 and vcan/acan) that are also involved in vertebrate calcification. EDIL3 and MFGE8 proteins possess EGF-like and coagulation factor 5/8 (F5/8C) domains, and their 3D structures predicted that they bind calcium and extracellular vesicles. In chicken, we confirmed the presence of EDIL3 and MFGE8 proteins in eggshell, uterine fluid, and uterus. We observed that only edil3 is overexpressed in tissues in which eggshell mineralization takes place and that this overexpression occurs only at the onset of shell calcification. We therefore propose a model in which EDIL3 and, to a lesser extent, MFGE8 proteins guide vesicles containing amorphous calcium carbonate to the mineralization site. This model was supported by the observation that extracellular vesicles accumulate in uterine fluid during eggshell calcification and that they contain high levels of calcium, carbon, and oxygen that correspond to calcium carbonate.
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Affiliation(s)
| | | | - Maxwell T Hincke
- Department of Innovation in Medical Education, Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa K1H 8M5, Canada
| | - Joël Gautron
- BOA, INRA, Université de Tours, 37380 Nouzilly, France
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19
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Gautron J, Guyot N, Brionne A, Réhault-Godbert S. Bioactive Minor Egg Components. EGGS AS FUNCTIONAL FOODS AND NUTRACEUTICALS FOR HUMAN HEALTH 2019. [DOI: 10.1039/9781788013833-00259] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In the last 15 years, the development of functional genomics has increased the number of egg proteins identified from 50 to about 1300. These proteins are initially present in eggs to support a harmonious embryonic development. Consequently, this closed embryonic chamber contains molecules exhibiting diverse functions, including defense, nutrition and many predicted biological activities, which have been investigated using both bioinformatics and experimental investigations. In this chapter, we focus on some very interesting activities of high potential reported for minor egg proteins (excluding ovalbumin, ovotransferrin and lysozyme). The shell matrix proteins are involved in the calcification process to define and control the final texture of the shell and thereby its mechanical properties. Antimicrobial proteins are part of innate immunity and are mainly present in the white and vitelline membranes. They encompass several protein families, including protease inhibitors, vitamin-binding proteins, defensins, LBP-PLUNC family proteins and heparin-binding proteins. The egg also possesses additional bioactive proteins with direct anti-cancerous and antioxidant activities or whose biochemical properties are currently used to develop diagnostic tools and strategies for targeted therapy. Finally, this chapter also reports some emerging functions in tissue remodeling/wound healing and proposes some relevant bioactive candidates and research fields that would be interesting to investigate further.
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Affiliation(s)
- J. Gautron
- INRA, BOA, Université de Tours 37380 Nouzilly France
| | - N. Guyot
- INRA, BOA, Université de Tours 37380 Nouzilly France
| | - A. Brionne
- INRA, BOA, Université de Tours 37380 Nouzilly France
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20
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Estimation of calcium requirements for optimal productive and reproductive performance, eggshell and tibial quality in egg-type duck breeders. Animal 2019; 13:2207-2215. [PMID: 31062683 DOI: 10.1017/s1751731119000648] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Optimizing the dietary calcium (Ca) level is essential to maximize the eggshell quality, egg production and bone formation in poultry. This study aimed to establish the Ca requirements of egg-type duck breeders from 23 to 57 weeks of age on egg production, eggshell, incubation, tibial, plasma and ovary-related indices, as well as the expression of matrix protein-related genes. Totally, 450 Longyan duck breeders aged 21 weeks of age were allotted randomly into five treatments, each with six replicates of 15 individually caged birds. The data collection started from 23 weeks of age and continued over the following 35 weeks. The five groups corresponded to five dietary treatments containing either 2.8%, 3.2%, 3.6%, 4.0% or 4.4% Ca. The tested dietary Ca levels increased (linear, P <0.01) egg production and egg mass, and linearly improved (P <0.01) the feed conversion ratio (FCR). Increasing the dietary Ca levels from 2.8% to 4.4% increased (P <0.01) the eggshell thickness and eggshell content. The tested Ca levels showed a quadratic effect on eggshell thickness and ovarian weight (P <0.01); the highest values were obtained with the Ca levels 4.0% and 3.6%, respectively. Dietary Ca levels affected the small yellow follicles (SYF) number and SYF weight/ovarian weight, and the linear response (P <0.01) was significant vis-à-vis SYF number. In addition, dietary Ca levels increased (P <0.05) the tibial dry weight, breaking strength, mineral density and ash content. Plasma and tibial phosphorus concentration exhibited a quadratic (P <0.01) response to dietary Ca levels. Plasma calcitonin concentration linearly (P <0.01) increased as dietary Ca levels increased. The relative expression of carbonic anhydrase 2 in the uterus rose (P <0.01) with the increment of dietary Ca levels, and the highest value was obtained with 3.2% Ca. In conclusion, Longyan duck breeders fed a diet with 4.0% Ca had superior eggshell and tibial quality, while those fed a diet with 3.6% Ca had the heaviest ovarian weights. The regression model indicated that the dietary Ca levels 3.86%, 3.48% and 4.00% are optimal levels to obtain maximum eggshell thickness, ovarian weight and tibial mineral density, respectively.
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21
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Réhault-Godbert S, Guyot N, Nys Y. The Golden Egg: Nutritional Value, Bioactivities, and Emerging Benefits for Human Health. Nutrients 2019; 11:E684. [PMID: 30909449 PMCID: PMC6470839 DOI: 10.3390/nu11030684] [Citation(s) in RCA: 200] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/15/2019] [Accepted: 03/19/2019] [Indexed: 12/26/2022] Open
Abstract
Egg is an encapsulated source of macro and micronutrients that meet all requirements to support embryonic development until hatching. The perfect balance and diversity in its nutrients along with its high digestibility and its affordable price has put the egg in the spotlight as a basic food for humans. However, egg still has to face many years of nutritionist recommendations aiming at restricting egg consumption to limit cardiovascular diseases incidence. Most experimental, clinical, and epidemiologic studies concluded that there was no evidence of a correlation between dietary cholesterol brought by eggs and an increase in plasma total-cholesterol. Egg remains a food product of high nutritional quality for adults including elderly people and children and is extensively consumed worldwide. In parallel, there is compelling evidence that egg also contains many and still-unexplored bioactive compounds, which may be of high interest in preventing/curing diseases. This review will give an overview of (1) the main nutritional characteristics of chicken egg, (2) emerging data related to egg bioactive compounds, and (3) some factors affecting egg composition including a comparison of nutritional value between eggs from various domestic species.
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Affiliation(s)
| | - Nicolas Guyot
- Biologie des Oiseaux et Aviculture, INRA, Université de Tours, 37380 Nouzilly, France.
| | - Yves Nys
- Biologie des Oiseaux et Aviculture, INRA, Université de Tours, 37380 Nouzilly, France.
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22
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Bai D, Lan L, Wan Y, Yan M, Lian S, Li A, Wu X. A note on cloning and analysis of the osteopontin gene with egg quality traits in two Chinese domestic ducks. Br Poult Sci 2018; 59:609-612. [PMID: 30064255 DOI: 10.1080/00071668.2018.1507016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
1. Osteopontin (OPN) is a highly phosphorylated acidic glycoprotein that plays a crucial role in eggshell formation. In this study, an 893-bp cDNA sequence of the OPN gene, which encodes 180 amino acids, was obtained. 2. Polymorphisms of the OPN gene were analysed with DNA sequencing and polymerase chain reaction-single-strand conformation polymorphism methods in two Chinese domestic laying ducks (Jingding n = 100, Youxian n = 478, respectively). 3. One polymorphism was identified in exon 7 (NM_ 004676534.1:c.267T>C) of the OPN gene, with three genotypes: TT (both T allels weren't mutated (wild type)), TC (one T allel was mutated to C (heterozygote genotype)) and CC. (both T allels were mutated to C (homozygote 20 genotype)) Association analysis with egg quality traits in the two Chinese domestic laying ducks showed that the ducks with the CC genotype had significantly greater eggshell strength and eggshell thickness (p < 0.05). Hence, the exon 7 267T>C polymorphism of the OPN gene is a potentially valuable genetic marker for laying duck breeding programmes.
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Affiliation(s)
- D Bai
- a College of Animal Sciences , Fujian Agricultural and Forestry University , Fuzhou , China
| | - L Lan
- a College of Animal Sciences , Fujian Agricultural and Forestry University , Fuzhou , China
| | - Y Wan
- a College of Animal Sciences , Fujian Agricultural and Forestry University , Fuzhou , China
| | - M Yan
- a College of Animal Sciences , Fujian Agricultural and Forestry University , Fuzhou , China
| | - S Lian
- a College of Animal Sciences , Fujian Agricultural and Forestry University , Fuzhou , China
| | - A Li
- a College of Animal Sciences , Fujian Agricultural and Forestry University , Fuzhou , China
| | - X Wu
- a College of Animal Sciences , Fujian Agricultural and Forestry University , Fuzhou , China
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23
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Athanasiadou D, Jiang W, Goldbaum D, Saleem A, Basu K, Pacella MS, Böhm CF, Chromik RR, Hincke MT, Rodríguez-Navarro AB, Vali H, Wolf SE, Gray JJ, Bui KH, McKee MD. Nanostructure, osteopontin, and mechanical properties of calcitic avian eggshell. SCIENCE ADVANCES 2018; 4:eaar3219. [PMID: 29725615 PMCID: PMC5930395 DOI: 10.1126/sciadv.aar3219] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 02/13/2018] [Indexed: 05/07/2023]
Abstract
Avian (and formerly dinosaur) eggshells form a hard, protective biomineralized chamber for embryonic growth-an evolutionary strategy that has existed for hundreds of millions of years. We show in the calcitic chicken eggshell how the mineral and organic phases organize hierarchically across different length scales and how variation in nanostructure across the shell thickness modifies its hardness, elastic modulus, and dissolution properties. We also show that the nanostructure changes during egg incubation, weakening the shell for chick hatching. Nanostructure and increased hardness were reproduced in synthetic calcite crystals grown in the presence of the prominent eggshell protein osteopontin. These results demonstrate the contribution of nanostructure to avian eggshell formation, mechanical properties, and dissolution.
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Affiliation(s)
| | - Wenge Jiang
- Faculty of Dentistry, McGill University, Montreal, Quebec H3A 0C7, Canada
| | - Dina Goldbaum
- Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Aroba Saleem
- Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Kaustuv Basu
- Facility for Electron Microscopy Research, McGill University, Montreal, Quebec H3A 0C7, Canada
| | - Michael S. Pacella
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Corinna F. Böhm
- Department of Materials Science and Engineering, Institute of Glass and Ceramics, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen 91058, Germany
| | - Richard R. Chromik
- Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Maxwell T. Hincke
- Department of Cellular and Molecular Medicine and Department of Innovation in Medical Education, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | | | - Hojatollah Vali
- Facility for Electron Microscopy Research, McGill University, Montreal, Quebec H3A 0C7, Canada
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec H3A 0C7, Canada
| | - Stephan E. Wolf
- Department of Materials Science and Engineering, Institute of Glass and Ceramics, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen 91058, Germany
- Interdisciplinary Center for Functional Particle Systems, Friedrich-Alexander University Erlangen-Nürnberg, Haberstrasse 9a, Erlangen 91058, Germany
| | - Jeffrey J. Gray
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Program in Molecular Biophysics, Institute for Nanobiotechnology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Khanh Huy Bui
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec H3A 0C7, Canada
| | - Marc D. McKee
- Faculty of Dentistry, McGill University, Montreal, Quebec H3A 0C7, Canada
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec H3A 0C7, Canada
- Corresponding author.
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24
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Electrocrystallization of CaCO3 Crystals Obtained through Phosphorylated Chitin. CRYSTALS 2018. [DOI: 10.3390/cryst8020082] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Shet D, Ghosh J, Ajith S, Awachat VB, Elangovan AV. Efficacy of dietary phytase supplementation on laying performance and expression of osteopontin and calbindin genes in eggshell gland. ACTA ACUST UNITED AC 2017; 4:52-58. [PMID: 30167484 PMCID: PMC6112343 DOI: 10.1016/j.aninu.2017.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/13/2017] [Accepted: 10/16/2017] [Indexed: 11/03/2022]
Abstract
This study was conducted to evaluate the effects of different levels of dietary phytase supplementation in the layer feed on egg production performance, egg shell quality and expression of osteopontin (OPN) and calbindin (CALB1) genes. Seventy-five White Leghorn layers at 23 weeks of age were randomly divided into 5 groups consisting of a control diet with 0.33% non-phytate phosphorus (NPP) and 4 low phosphorus (P) diets: 2 diets (T1 and T2) with 0.24% NPP + 250 FTU/kg laboratory produced phytase or commercial phytase and another 2 diets (T3 and T4) with 0.16% NPP + 500 FTU/kg laboratory produced phytase or commercial phytase with complete replacement of inorganic P. The results indicated that there were no significant differences (P > 0.05) in egg production performance and quality of egg during the first 2 months of trial. However, in next 2 months, a significant drop in egg production and feed intake was observed in birds fed diets with low P and 500 FTU/kg supplementation of laboratory produced phytase. Osteopontin gene was up-regulated whereas the CALB1 gene was down regulated in all phytase treatment groups irrespective of the source of phytase. The current data demonstrated that 250 FTU/kg supplementation of laboratory produced phytase with 50% less NPP supplementation and 500 FTU/kg supplementation of commercial phytase even without NPP in diet can maintain the egg production. The up-regulation of OPN and down regulation of CALB1 in egg shell gland in the entire phytase treated group birds irrespective of the source of enzymes is indicative of the changes in P bio-availability at this site.
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Affiliation(s)
- Divya Shet
- ICAR - National Institute of Animal Nutrition and Physiology, Bangalore 560030, India.,Department of Biotechnology, Jain University, Bangalore 560030, India
| | - Jyotirmoy Ghosh
- ICAR - National Institute of Animal Nutrition and Physiology, Bangalore 560030, India
| | - Sreeja Ajith
- ICAR - National Institute of Animal Nutrition and Physiology, Bangalore 560030, India.,Department of Microbiology, Jain University, Bangalore 560030, India
| | - Vaibhav B Awachat
- ICAR - National Institute of Animal Nutrition and Physiology, Bangalore 560030, India
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26
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Eggshell matrix proteins OC-116, OC-17 and OCX36 in hen's sperm storage tubules. Anim Reprod Sci 2017; 185:28-41. [DOI: 10.1016/j.anireprosci.2017.07.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 07/28/2017] [Accepted: 07/31/2017] [Indexed: 02/04/2023]
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27
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Liu Z, Song L, Zhang F, He W, Linhardt RJ. Characteristics of global organic matrix in normal and pimpled chicken eggshells. Poult Sci 2017; 96:3775-3784. [PMID: 28938773 PMCID: PMC5850339 DOI: 10.3382/ps/pex171] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 06/10/2017] [Indexed: 01/08/2023] Open
Abstract
The organic matrix from normal and pimpled calcified chicken eggshells were dissociated into acid-insoluble, water-insoluble, and facultative-soluble (both acid- and water-soluble) components, to understand the influence of shell matrix on eggshell qualities. A linear correlation was shown among these 3 matrix components in normal eggshells but was not observed in pimpled eggshells. In pimpled eggshells, the percentage contents of all 4 groups of matrix (the total matrix, acid-insoluble matrix, water-insoluble matrix, and facultative-soluble matrix) were significantly higher than that in normal eggshells. The amounts of both total matrix and acid-insoluble matrix in individual pimpled calcified shells were high, even though their weight was much lower than a normal eggshell. In both normal and pimpled eggshells, the calcified eggshell weight and shell thickness significantly and positively correlated with the amounts of all 4 groups of matrix in an individual calcified shell. In normal eggshells, the calcified shell thickness and shell breaking strength showed no significant correlations with the percentage contents of all 4 groups of matrix. In normal eggshells, only the shell membrane weight significantly correlated with the constituent ratios of both acid-insoluble matrix and facultative-soluble matrix in the whole matrix. In pimpled eggshells, 3 variables (calcified shell weight, shell thickness, and breaking strength) were significantly correlated with the constituent proportions of both acid-insoluble matrix and facultative-matrix. This study suggests that mechanical properties of normal eggshells may not linearly depend on the organic matrix content in the calcified eggshells and that pimpled eggshells might result by the disequilibrium enrichment of some proteins with negative effects.
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Affiliation(s)
- Z. Liu
- College of Animal Science and Technology, Zhejiang Agriculture & Forestry University, Lin’an 311300, Zhejiang, China
- Departments of Chemical and Biological Engineering, Chemistry and Chemical Biology, Biology, and Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180
| | - L. Song
- College of Animal Science and Technology, Zhejiang Agriculture & Forestry University, Lin’an 311300, Zhejiang, China
| | - F. Zhang
- Departments of Chemical and Biological Engineering, Chemistry and Chemical Biology, Biology, and Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180
| | - W. He
- Departments of Chemical and Biological Engineering, Chemistry and Chemical Biology, Biology, and Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180
| | - R. J. Linhardt
- Departments of Chemical and Biological Engineering, Chemistry and Chemical Biology, Biology, and Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180
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Liu Z, Song L, Lu L, Zhang X, Zhang F, Wang K, Linhardt RJ. Comparative proteomics of matrix fractions between pimpled and normal chicken eggshells. J Proteomics 2017; 167:1-11. [PMID: 28755913 DOI: 10.1016/j.jprot.2017.07.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 07/18/2017] [Accepted: 07/21/2017] [Indexed: 12/18/2022]
Abstract
Eggshell matrix can be dissociated into three matrix fractions: acid-insoluble matrix (M1), water-insoluble matrix (M2) and acid-water facultative-soluble matrix (M3). Matrix fractions from pimpled and normal eggshells were compared using label-free proteomic method to understand the differences among three matrix fractions and the proteins involved with eggshell quality. A total of 738 and 600 proteins were identified in the pimpled and normal calcified eggshells, respectively. Both eggshells showed a combined proteomic inventory of 769 proteins. In the same type of eggshell, a high similarity was present in the proteomes of three matrix fractions. These triply overlapped common proteins formed the predominant contributor to proteomic abundance in the matrix fractions. In each matrix fraction and between both eggshell models, normal and pimpled eggshells, a majority of the proteomes of the fractions were commonly observed. Forty-two common major proteins (iBAQ-derived abundance ≥0.095% of proteomic abundance) were identified throughout the three matrix fractions and these proteins might act as backbone constituents in chicken eggshell matrix. Finally, using 1.75-fold as up-regulated and using 0.57-fold as down-regulated cutoff values, twenty-five differential major proteins were screened and they all negatively influence and none showed any effect on eggshell quality. Overall, we uncovered the characteristics of proteomics of three eggshell matrix fractions and identified candidate proteins influencing eggshell quality. The next research on differential proteins will uncover the potential mechanisms underlying how proteins affect eggshell quality. BIOLOGICAL SIGNIFICANCE It was reported that the proteins in an eggshell can be divided into insoluble and soluble proteins. The insoluble proteins are thought to be an inter-mineral matrix and acts as a structural framework, while the soluble proteins are thought as intra-mineral matrix that are embedded within the crystal during calcification. However, the difference between matrix fractions is unknown. Cross-analysis of proteomic data of three matrix fractions from the same type of eggshell, uncovered triply overlapped common proteins formed the predominant contributor to proteomic abundance of any matrix fraction, and we suggested that abundance variance of some common proteins between the three matrix fractions might be an important cause of their solubility differences. Moreover, eggshell is formed in hen's uterus, and uterus tend to be considered as unique organ determining eggshell quality. By cross-analysis on proteomic data of three matrix fractions between two eggshell models, normal and pimpled eggshells, the differential proteins were screened as candidates influencing eggshell quality. And we suggested that the liver and spleen or lymphocytes might be the major organs influencing eggshell quality, because the most promising candidates are almost blood and non-collagenous proteins, and originated from above organs.
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Affiliation(s)
- Zhangguo Liu
- College of Animal Science and Technology, Zhejiang Agriculture & Forestry University, Lin'an 311300, Zhejiang, PR China.
| | - Lingzi Song
- College of Animal Science and Technology, Zhejiang Agriculture & Forestry University, Lin'an 311300, Zhejiang, PR China
| | - Lizhi Lu
- Institute of Animal Husbandry and Veterinary Science, Zhejiang Provincial Academy of Agricultural Science, Hangzhou 311000, Zhejiang, PR China
| | - Xianfu Zhang
- College of Animal Science and Technology, Zhejiang Agriculture & Forestry University, Lin'an 311300, Zhejiang, PR China
| | - Fuming Zhang
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy 12180, NY, USA; Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy 12180, NY, USA; Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy 12180, NY, USA; Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy 12180, NY, USA
| | - Kehua Wang
- Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou 225000, Jiangsu, PR China
| | - Robert J Linhardt
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy 12180, NY, USA; Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy 12180, NY, USA; Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy 12180, NY, USA; Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy 12180, NY, USA
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Wang D, Liao B, Zhang Q, Liu JS, Duan Z, Hou Z, Ning Z. Gene Polymorphisms are Associated with Eggshell Ultrastructure Organization in Hens. ACTA ACUST UNITED AC 2017. [DOI: 10.1590/1806-9061-2016-0255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- D Wang
- China Agricultural University, China
| | - B Liao
- Shenyang Institute of Technology, China
| | - Q Zhang
- China Agricultural University, China
| | - JS Liu
- China Agricultural University, China
| | - Z Duan
- China Agricultural University, China
| | - Z Hou
- China Agricultural University, China
| | - Z Ning
- China Agricultural University, China
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Zhang M, Wang N, Xu Q, Harlina PW, Ma M. An Efficient Method for Co-purification of Eggshell Matrix Proteins OC-17, OC-116, and OCX-36. Korean J Food Sci Anim Resour 2017; 36:769-778. [PMID: 28115888 PMCID: PMC5243961 DOI: 10.5851/kosfa.2016.36.6.769] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/27/2016] [Accepted: 10/27/2016] [Indexed: 11/18/2022] Open
Abstract
In this study, we improved the eggshell-membrane separation process by separating the shell and membrane with EDTA solution, evaluating effects of three different extraction solutions (acetic acid, EDTA, and phosphate solution), and co-purifying multiple eggshell proteins with two successive ion-exchange chromatography procedures (CM Sepharose Fast Flow and DEAE Sepharose Fast Flow). The recovery and residual rates of eggshell and membrane separated by the modified method with added EDTA solution were 93.88%, 91.15% and 1.01%, 2.87%, respectively. Ovocleidin-116 (OC-116) and ovocalyxin-36 (OCX-36) were obtained by loading 50 mM Na-Hepes, pH 7.5, 2 mM DTT and 350 mM NaCl buffer onto the DEAE-FF column at a flow rate of 1 mL/min, ovocleidin-17 (OC-17) was obtained by loading 100 mM NaCl, 50 mM Tris, pH 8.0 on the CM-FF column at a flow rate of 0.5 mL/min. The purities of OCX-36, OC-17 and OC-116 were 96.82%, 80.15% and 73.22%, and the recovery rates were 55.27%, 53.38% and 36.34%, respectively. Antibacterial activity test suggested that phosphate solution extract exhibited significantly higher activity against the tested bacterial strains than the acetic acid or EDTA extract, probably due to more types of proteins in the extract. These results demonstrate that this separation method is feasible and efficient.
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Affiliation(s)
- Maojie Zhang
- National and Local Joint Engineering Research Center for Egg Processing Technology, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Ning Wang
- National and Local Joint Engineering Research Center for Egg Processing Technology, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Qi Xu
- National and Local Joint Engineering Research Center for Egg Processing Technology, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Putri Widyanti Harlina
- National and Local Joint Engineering Research Center for Egg Processing Technology, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Meihu Ma
- National and Local Joint Engineering Research Center for Egg Processing Technology, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
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Soluble eggshell membrane: A natural protein to improve the properties of biomaterials used for tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 67:807-821. [DOI: 10.1016/j.msec.2016.05.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 04/18/2016] [Accepted: 05/01/2016] [Indexed: 02/07/2023]
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Egg serpins: The chicken and/or the egg dilemma. Semin Cell Dev Biol 2016; 62:120-132. [PMID: 27565683 DOI: 10.1016/j.semcdb.2016.08.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 06/22/2016] [Accepted: 08/22/2016] [Indexed: 02/08/2023]
Abstract
Twenty-seven serpins belonging to clade A, B, C, D, E, F, G, H and I serpins are currently referenced in chicken genome databases. Phylogenetic analysis of chicken serpins revealed that ovalbumin (Serpinb14) and its paralogs ovalbumin-related protein Y (Serpinb14b) and ovalbumin-related protein X (Serpinb14c) are found in bird species. These clade B serpins are specifically expressed in reproductive tissues and exported in the egg where they constitute major protein components. These data suggest that these three paralogs have probably appeared in birds to face new environments and ensure the extra-uterine development of an embryo in a shell egg. Twelve other serpins have been identified in the newly produced egg, some of them having a specific distribution in the respective egg structures (eggshell, egg white, vitelline membrane and egg yolk). The physiological role of these egg serpins remain largely unexplored, but there is increasing evidence in literature or by homologies with their mammalian counterparts, that some of them participate in cell proliferation, tissue remodeling and/or angiogenesis associated with folliculogenesis and development of extraembryonic structures, eggshell biomineralization, egg defense and nutrition of the embryo. A better knowledge of the phylogenetic evolution of these 15 serpins in other oviparous species, on their egg distribution, on their regulation during embryonic development (activation/degradation/transfer) and on their functional specificity, is needed to better appreciate their role and their bird-specificity. These review shed light on the multiple possibilities that offer the avian egg model to study the role of serpins in reproduction and developmental biology.
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Ma M, You S, Qu J, Ren N. Natural eggshell membrane as separator for improved coulombic efficiency in air-cathode microbial fuel cells. RSC Adv 2016. [DOI: 10.1039/c6ra13052f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Waste eggshell membranes are in situ used as separators in MFCs for remarkably enhanced coulombic efficiency of 67.14–95.03%.
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Affiliation(s)
- Ming Ma
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Shijie You
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Jiuhui Qu
- State Key Laboratory of Environmental Aquatic Chemistry
- Research Centre for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Nanqi Ren
- State Key Laboratory of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin
- P. R. China
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Dallongeville S, Garnier N, Rolando C, Tokarski C. Proteins in Art, Archaeology, and Paleontology: From Detection to Identification. Chem Rev 2015; 116:2-79. [PMID: 26709533 DOI: 10.1021/acs.chemrev.5b00037] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Sophie Dallongeville
- Miniaturisation pour la Synthèse, l'Analyse & la Protéomique (MSAP), USR CNRS 3290, Université de Lille 1 Sciences et Technologies , 59655 Villeneuve d'Ascq Cedex, France
| | - Nicolas Garnier
- SARL Laboratoire Nicolas Garnier , 63270 Vic le Comte, France
| | - Christian Rolando
- Miniaturisation pour la Synthèse, l'Analyse & la Protéomique (MSAP), USR CNRS 3290, Université de Lille 1 Sciences et Technologies , 59655 Villeneuve d'Ascq Cedex, France
| | - Caroline Tokarski
- Miniaturisation pour la Synthèse, l'Analyse & la Protéomique (MSAP), USR CNRS 3290, Université de Lille 1 Sciences et Technologies , 59655 Villeneuve d'Ascq Cedex, France
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Mann K. The calcified eggshell matrix proteome of a songbird, the zebra finch (Taeniopygia guttata). Proteome Sci 2015; 13:29. [PMID: 26628892 PMCID: PMC4666066 DOI: 10.1186/s12953-015-0086-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 11/22/2015] [Indexed: 12/17/2022] Open
Abstract
Background The proteins of avian eggshell organic matrices are thought to control the mineralization of the eggshell in the shell gland (uterus). Proteomic analysis of such matrices identified many candidates for such a role. However, all matrices analyzed to date come from species of one avian family, the Phasianidae. To analyze the conservation of such proteins throughout the entire class Aves and to possibly identify a common protein toolkit enabling eggshell mineralization, it is important to analyze eggshell matrices from other avian families. Because mass spectrometry-based in-depth proteomic analysis still depends on sequence databases as comprehensive and accurate as possible, the obvious choice for a first such comparative study was the eggshell matrix of zebra finch, the genome sequence of which is the only songbird genome published to date. Results The zebra finch eggshell matrix comprised 475 accepted protein identifications. Most of these proteins (84 %) were previously identified in species of the Phasianidae family (chicken, turkey, quail). This also included most of the so-called eggshell-specific proteins, the ovocleidins and ovocalyxins. Ovocleidin-116 was the second most abundant protein in the zebra finch eggshell matrix. Major proteins also included ovocalyxin-32 and -36. The sequence of ovocleidin-17 was not contained in the sequence database, but a presumptive homolog was tentatively identified by N-terminal sequence analysis of a prominent 17 kDa band. The major proteins also included three proteins similar to ovalbumin, the most abundant of which was identified as ovalbumin with the aid of two characteristic phosphorylation sites. Several other proteins identified in Phasianidae eggshell matrices were not identified. When the zebra finch sequence database contained a sequence similar to a missing phasianid protein it may be assumed that the protein is missing from the matrix. This applied to ovocalyxin-21/gastrokine-1, a major protein of the chicken eggshell matrix, to EDIL3 and to lactadherin. In other cases failure to identify a particular protein may be due to the absence of this protein from the sequence database, highlighting the importance of better, more comprehensive sequence databases. Conclusions The results indicate that ovocleidin-116, ovocleidin-17, ovocalyxin-36 and ovocalyxin-32 may be universal avian eggshell-mineralizing proteins. All the more important it is to elucidate the role of these proteins at the molecular level. This cannot be achieved by proteomic studies but will need application of other methods, such as atomic force microscopy or gene knockouts. However, it will also be important to analyze more eggshell matrices of different avian families to unequivocally identify other mineralization toolkit proteins apart from ovocleidins and ovocalyxins. Progress in this respect will depend critically on the availability of more, and more comprehensive, sequence databases. The development of faster and cheaper nucleotide sequencing methods has considerably accelerated genome and transcriptome sequencing, but this seems to concur with frequent publication of incomplete and fragmented sequence databases. Electronic supplementary material The online version of this article (doi:10.1186/s12953-015-0086-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Karlheinz Mann
- Max-Planck-Institut für Biochemie, Abteilung Proteomics und Signaltransduktion, D-82152 Martinsried, Am Klopferspitz 18 Germany
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36
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Makkar S, Liyanage R, Kannan L, Packialakshmi B, Lay JO, Rath NC. Chicken Egg Shell Membrane Associated Proteins and Peptides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:9888-9898. [PMID: 26485361 DOI: 10.1021/acs.jafc.5b04266] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Egg shells are poultry industry byproducts with potential for use in various biological and agricultural applications. We have been interested in the membranes underlying the calcareous shell as a feed supplement, which showed potential to improve immunity and performance of post hatch poultry. Therefore, to determine their protein and peptide profiles, we extracted the egg shell membranes (ESM) from fresh unfertilized eggs with methanol and guanidine hydrochloride (GdHCl) to obtain soluble proteins for analysis by mass spectrometry. The methanol extract was subjected to matrix-assisted laser desorption ionization (MALDI), electrospray ionization (ESI), high-performance reverse phase liquid chromatographic separation (HPLC), and tandem mass spectrometry (MS/MS) to determine its peptide and protein profiles. The GdHCl extract was subjected to ESI-HPLC-MS/MS following trypsin digestion of reduced/alkylated proteins. Nine proteins from the methanol extract and >275 proteins from the GdHCl extract were tentatively identified. The results suggested the presence of several abundant proteins from egg whites, such as ovoalbumin, ovotransferrin, and lysozyme as well as many others associated with antimicrobial, biomechanical, cytoskeletal organizational, cell signaling, and enzyme activities. Collagens, keratin, agrin, and laminin were some of the structural proteins present in the ESM. The methanol-soluble fraction contained several clusterin peptides and defensins, particularly, two isoforms of gallin. The ratios of the two isoforms of gallin differed between the membranes obtained from brown and white eggs. The high abundance of several antimicrobial, immunomodulatory, and other bioactive proteins in the ESM along with its potential to entrap various microbes and antigens may make it a suitable vehicle for oral immunization of post hatch poultry and improve their disease resistance.
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Affiliation(s)
- Sarbjeet Makkar
- Poultry Production & Product Safety Research Unit, Agricultural Research Service, USDA; ‡Department of Poultry Science; #State Wide Mass Spectrometry Facility; and ⊥Cell & Molecular Biology Program, University of Arkansas , Fayetteville, Arkansas 72701, United States
| | - Rohana Liyanage
- Poultry Production & Product Safety Research Unit, Agricultural Research Service, USDA; ‡Department of Poultry Science; #State Wide Mass Spectrometry Facility; and ⊥Cell & Molecular Biology Program, University of Arkansas , Fayetteville, Arkansas 72701, United States
| | - Lakshmi Kannan
- Poultry Production & Product Safety Research Unit, Agricultural Research Service, USDA; ‡Department of Poultry Science; #State Wide Mass Spectrometry Facility; and ⊥Cell & Molecular Biology Program, University of Arkansas , Fayetteville, Arkansas 72701, United States
| | - Balamurugan Packialakshmi
- Poultry Production & Product Safety Research Unit, Agricultural Research Service, USDA; ‡Department of Poultry Science; #State Wide Mass Spectrometry Facility; and ⊥Cell & Molecular Biology Program, University of Arkansas , Fayetteville, Arkansas 72701, United States
| | - Jack O Lay
- Poultry Production & Product Safety Research Unit, Agricultural Research Service, USDA; ‡Department of Poultry Science; #State Wide Mass Spectrometry Facility; and ⊥Cell & Molecular Biology Program, University of Arkansas , Fayetteville, Arkansas 72701, United States
| | - Narayan C Rath
- Poultry Production & Product Safety Research Unit, Agricultural Research Service, USDA; ‡Department of Poultry Science; #State Wide Mass Spectrometry Facility; and ⊥Cell & Molecular Biology Program, University of Arkansas , Fayetteville, Arkansas 72701, United States
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Du J, Hincke MT, Rose-Martel M, Hennequet-Antier C, Brionne A, Cogburn LA, Nys Y, Gautron J. Identifying specific proteins involved in eggshell membrane formation using gene expression analysis and bioinformatics. BMC Genomics 2015; 16:792. [PMID: 26470705 PMCID: PMC4608100 DOI: 10.1186/s12864-015-2013-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 10/04/2015] [Indexed: 12/16/2022] Open
Abstract
Background The avian eggshell membranes surround the egg white and provide a structural foundation for calcification of the eggshell which is essential for avian reproduction; moreover, it is also a natural biomaterial with many potential industrial and biomedical applications. Due to the insoluble and stable nature of the eggshell membrane fibres, their formation and protein constituents remain poorly characterized. The purpose of this study was to identify genes encoding eggshell membrane proteins, particularly those responsible for its structural features, by analyzing the transcriptome of the white isthmus segment of the oviduct, which is the specialized region responsible for the fabrication of the membrane fibres. Results The Del-Mar 14 K chicken microarray was used to investigate up-regulated expression of transcripts in the white isthmus (WI) compared with the adjacent magnum (Ma) and uterine (Ut) segments of the hen oviduct. Analysis revealed 135 clones hybridizing to over-expressed transcripts (WI/Ma + WI/Ut), and corresponding to 107 NCBI annotated non-redundant Gallus gallus gene IDs. This combined analysis revealed that the structural proteins highly over-expressed in the white isthmus include collagen X (COL10A1), fibrillin-1 (FBN1) and cysteine rich eggshell membrane protein (CREMP). These results validate previous proteomics studies which have identified collagen X (α-1) and CREMP in soluble eggshell extracts. Genes encoding collagen-processing enzymes such as lysyl oxidase homologs 1, 2 and 3 (LOXL1, LOXL2 and LOXL3), prolyl 4 hydroxylase subunit α-2 and beta polypeptide (P4HA2 and P4HB) as well as peptidyl-prolyl cis-trans isomerase C (PPIC) were also over-expressed. Additionally, genes encoding proteins known to regulate disulfide cross-linking, including sulfhydryl oxidase (QSOX1) and thioredoxin (TXN), were identified which suggests that coordinated up-regulation of genes in the white isthmus is associated with eggshell membrane fibre formation. Conclusions The present study has identified genes associated with the processing of collagen, other structural proteins, and disulfide-mediated cross-linking during eggshell membrane formation in the white isthmus. Identification of these genes will provide new insight into eggshell membrane structure and mechanisms of formation that will assist in the development of selection strategies to improve eggshell quality and food safety of the table egg. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-2013-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jingwen Du
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, K1H 8 M5, Canada.
| | - Maxwell T Hincke
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, K1H 8 M5, Canada.
| | - Megan Rose-Martel
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, K1H 8 M5, Canada.
| | | | | | - Larry A Cogburn
- Department of Animal and Food Sciences, University of Delaware, Newark, DE, 19717, USA.
| | - Yves Nys
- INRA, UR83 Recherches Avicoles, F-37380, Nouzilly, France.
| | - Joel Gautron
- INRA, UR83 Recherches Avicoles, F-37380, Nouzilly, France.
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Mann K, Mann M. Proteomic analysis of quail calcified eggshell matrix: a comparison to chicken and turkey eggshell proteomes. Proteome Sci 2015; 13:22. [PMID: 26312056 PMCID: PMC4550075 DOI: 10.1186/s12953-015-0078-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 08/11/2015] [Indexed: 12/19/2022] Open
Abstract
Background Eggshell mineralization in commercially important species such as chicken, turkey or quail is of interest as a general model of calcium carbonate biomineralization. Knowledge of proteins and molecular mechanisms in eggshell assembly may also pave the way to manipulation of thickness of the calcified layer or other features. Comparison of eggshell matrix proteomes of different species may contribute to a better understanding of the mineralization process. The recent publication of the quail genome sequence now enables the proteomic analysis of the quail shell matrix and this comparison with those of chicken and turkey. Results The quail eggshell proteome comprised 622 identified proteins, 311 of which were shared with chicken and turkey eggshell proteomes. Forty-eight major proteins (iBAQ-derived abundance higher than 0.1 % of total identified proteome) together covered 94 % of total proteome mass. Fifteen of these are also among the most abundant proteins in chicken and turkey eggshell matrix. Only three proteins with a percentage higher than 1.0 % of the total had not previously been identified as eggshell matrix proteins. These were an uncharacterized member of the latexin family, an uncharacterized protease inhibitor containing a Kunitz domain, and gastric intrinsic factor. The most abundant proteins were ovocleidin-116, ovalbumin and ovocalyxin-36 representing approximately 31, 13 and 8 % of the total identified proteome, respectively. The major phosphoproteins were ovocleidin-116 and osteopontin. While osteopontin phosphorylation sites were predominantly conserved between chicken and quail sequences, conservation was less in ovocleidin-116. Conclusions Ovocleidin-116 and ovocalyxin-36 are among the most abundant eggshell matrix proteins in all three species of the family Phasianidae analyzed so far, indicating that their presently unknown function is essential for eggshell mineralization. Evidence for other chicken eggshell-specific proteins in quail was inconclusive. Therefore measurement of additional eggshell proteomes, especially from species of different families and preferentially from outside the order Galliformes, will be necessary. Electronic supplementary material The online version of this article (doi:10.1186/s12953-015-0078-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Karlheinz Mann
- Max-Planck-Institut für Biochemie, Abteilung Proteomics und Signaltransduktion, Am Klopferspitz 18, D-82152 Martinsried, Germany
| | - Matthias Mann
- Max-Planck-Institut für Biochemie, Abteilung Proteomics und Signaltransduktion, Am Klopferspitz 18, D-82152 Martinsried, Germany
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Marie P, Labas V, Brionne A, Harichaux G, Hennequet-Antier C, Rodriguez-Navarro AB, Nys Y, Gautron J. Quantitative proteomics provides new insights into chicken eggshell matrix protein functions during the primary events of mineralisation and the active calcification phase. J Proteomics 2015; 126:140-54. [PMID: 26049031 DOI: 10.1016/j.jprot.2015.05.034] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 05/11/2015] [Accepted: 05/29/2015] [Indexed: 01/04/2023]
Abstract
Eggshell is a bioceramic composed of 95% calcium carbonate mineral and 3.5% organic matrix. Its structural organisation is controlled by its organic matrix. We have used quantitative proteomics to study four key stages of shell mineralisation: 1) widespread deposition of amorphous calcium carbonate (ACC), 2) ACC transformation into crystalline calcite aggregates, 3) formation of larger calcite crystal units and 4) development of a columnar structure with preferential calcite crystal orientation. This approach explored the distribution of 216 shell matrix proteins found at the four stages. Variations in abundance according to these calcification events were observed for 175 proteins. A putative function related to the mineralisation process was predicted by bioinformatics for 77 of them and was further characterised. We confirmed the important role of lysozyme, ovotransferrin, ovocleidin-17 and ovocleidin-116 for shell calcification process, characterised major calcium binding proteins (EDIL3, ALB, MFGE8, NUCB2), and described novel proteoglycans core proteins (GPC4, HAPLN3). We suggest that OVAL and OC-17 play a role in the stabilisation of ACC. Finally, we report proteins involved in the regulation of proteins driving the mineralisation. They correspond to numerous molecular chaperones including CLU, PPIB and OCX21, protease and protease inhibitors including OVM and CST3, and regulators of phosphorylation.
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Affiliation(s)
- Pauline Marie
- INRA, UR83 Recherches avicoles, Fonction et Régulation des protéines de l'œuf, F-37380 Nouzilly, France
| | - Valérie Labas
- INRA, UMR INRA85, UMR CNRS 7247, Université de Tours, IFCE, Physiologie de la Reproduction et des Comportements, Plate-forme d'Analyse Intégrative des Biomolécules, Laboratoire de Spectrométrie de Masse, F-37380 Nouzilly, France
| | - Aurélien Brionne
- INRA, UR83 Recherches avicoles, Fonction et Régulation des protéines de l'œuf, F-37380 Nouzilly, France
| | - Grégoire Harichaux
- INRA, UMR INRA85, UMR CNRS 7247, Université de Tours, IFCE, Physiologie de la Reproduction et des Comportements, Plate-forme d'Analyse Intégrative des Biomolécules, Laboratoire de Spectrométrie de Masse, F-37380 Nouzilly, France
| | | | | | - Yves Nys
- INRA, UR83 Recherches avicoles, Fonction et Régulation des protéines de l'œuf, F-37380 Nouzilly, France
| | - Joël Gautron
- INRA, UR83 Recherches avicoles, Fonction et Régulation des protéines de l'œuf, F-37380 Nouzilly, France.
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Marie P, Labas V, Brionne A, Harichaux G, Hennequet-Antier C, Rodriguez-Navarro AB, Nys Y, Gautron J. Data set for the proteomic inventory and quantitative analysis of chicken eggshell matrix proteins during the primary events of eggshell mineralization and the active growth phase of calcification. Data Brief 2015; 4:430-6. [PMID: 26306314 PMCID: PMC4534581 DOI: 10.1016/j.dib.2015.06.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 06/26/2015] [Accepted: 06/29/2015] [Indexed: 01/24/2023] Open
Abstract
Chicken eggshell is a biomineral composed of 95% calcite calcium carbonate mineral and of 3.5% organic matrix proteins. The assembly of mineral and its structural organization is controlled by its organic matrix. In a recent study [1], we have used quantitative proteomic, bioinformatic and functional analyses to explore the distribution of 216 eggshell matrix proteins at four key stages of shell mineralization defined as: (1) widespread deposition of amorphous calcium carbonate (ACC), (2) ACC transformation into crystalline calcite aggregates, (3) formation of larger calcite crystal units and (4) rapid growth of calcite as columnar structure with preferential crystal orientation. The current article detailed the quantitative analysis performed at the four stages of shell mineralization to determine the proteins which are the most abundant. Additionally, we reported the enriched GO terms and described the presence of 35 antimicrobial proteins equally distributed at all stages to keep the egg free of bacteria and of 81 proteins, the function of which could not be ascribed.
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Affiliation(s)
- Pauline Marie
- INRA, UR83 Recherches avicoles, Fonction et Régulation des protéines de l׳œuf, F-37380 Nouzilly, France
| | - Valérie Labas
- INRA, UMR INRA85, UMR CNRS 7247; Université de Tours; IFCE, Physiologie de la Reproduction et des Comportements, Plate-forme d׳Analyse Intégrative des Biomolécules, Laboratoire de Spectrométrie de Masse, F-37380 Nouzilly, France
| | - Aurélien Brionne
- INRA, UR83 Recherches avicoles, Fonction et Régulation des protéines de l׳œuf, F-37380 Nouzilly, France
| | - Grégoire Harichaux
- INRA, UMR INRA85, UMR CNRS 7247; Université de Tours; IFCE, Physiologie de la Reproduction et des Comportements, Plate-forme d׳Analyse Intégrative des Biomolécules, Laboratoire de Spectrométrie de Masse, F-37380 Nouzilly, France
| | | | | | - Yves Nys
- INRA, UR83 Recherches avicoles, Fonction et Régulation des protéines de l׳œuf, F-37380 Nouzilly, France
| | - Joël Gautron
- INRA, UR83 Recherches avicoles, Fonction et Régulation des protéines de l׳œuf, F-37380 Nouzilly, France
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Rose-Martel M, Smiley S, Hincke MT. Novel identification of matrix proteins involved in calcitic biomineralization. J Proteomics 2015; 116:81-96. [DOI: 10.1016/j.jprot.2015.01.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 01/01/2015] [Accepted: 01/03/2015] [Indexed: 02/06/2023]
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Chen W, Zhao F, Tian Z, Zhang H, Ruan D, Li Y, Wang S, Zheng C, Lin Y. Dietary calcium deficiency in laying ducks impairs eggshell quality by suppressing the process of shell biomineralization. J Exp Biol 2015; 218:3336-43. [DOI: 10.1242/jeb.124347] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 08/25/2015] [Indexed: 01/23/2023]
Abstract
The objective of this study was to determine the effects of dietary calcium deficiency on the process of shell formation. Four hundred and fifty female ducks (Anas platyrhynchos) of 22 wk were randomly assigned to 3 groups. Ducks were fed one of two calcium-deficient diets (containing 1.8% or 0.38% calcium, respectively) or a calcium-adequate control diet (containing 3.6% calcium) for 67 d (depletion period), and then ducks of the 3 groups were fed a calcium-adequate diet for an additional 67 d (repletion period). As compared with the calcium-adequate control, the average shell thickness, egg shell weight, breaking strength, mammillae density and mammillary knob thickness of shell from ducks that consumed the diet with 0.38% calcium was significantly decreased (P<0.05) during the depletion period, accompanied by reduced quality of shell and tibia. The mRNA expression of both secreted phosphoprotein 1 (SPP1) and carbonic anhydrase 2 (CA2) in uterus were decreased after feeding calcium-deficient diets (1.8% or 0.38% calcium). Transcripts of calbindin 1 (CALB1), an important protein responsible for calcium transport, and matrix protein gene ovocalyxin-32 (OCX-32) and ovocleidin-116 (OC-116) were reduced in the ducks fed 0.38% calcium but not the 1.8% calcium. Plasma estradiol concentration was decreased by both of the calcium-deficient diets (P<0.05). The impaired shell quality and suppressed functional proteins involved in shell formation could be reversed by repletion of dietary calcium. The results of the present study suggest that dietary calcium deficiency negatively affects the eggshell quality and eggshell microarchitecture probably through suppressing the process of shell biomineralization.
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Affiliation(s)
- W. Chen
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
- Key Laboratory of Animal Nutrition and Feed Science in South China, Guangzhou 510640, China
- Ministry of Agriculture Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
- Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
| | - F. Zhao
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
- Key Laboratory of Animal Nutrition and Feed Science in South China, Guangzhou 510640, China
- Ministry of Agriculture Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
- Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
| | - Z.M. Tian
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
- Key Laboratory of Animal Nutrition and Feed Science in South China, Guangzhou 510640, China
- Ministry of Agriculture Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
- Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
| | - H.X. Zhang
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
- Key Laboratory of Animal Nutrition and Feed Science in South China, Guangzhou 510640, China
- Ministry of Agriculture Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
- Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
| | - D. Ruan
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
- Key Laboratory of Animal Nutrition and Feed Science in South China, Guangzhou 510640, China
- Ministry of Agriculture Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
- Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
| | - Y. Li
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
- Key Laboratory of Animal Nutrition and Feed Science in South China, Guangzhou 510640, China
- Ministry of Agriculture Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
- Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
| | - S. Wang
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
- Key Laboratory of Animal Nutrition and Feed Science in South China, Guangzhou 510640, China
- Ministry of Agriculture Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
- Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
| | - C.T. Zheng
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
- Key Laboratory of Animal Nutrition and Feed Science in South China, Guangzhou 510640, China
- Ministry of Agriculture Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
- Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
| | - Y.C. Lin
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- State Key Laboratory of Livestock and Poultry Breeding, Guangzhou 510640, China
- Key Laboratory of Animal Nutrition and Feed Science in South China, Guangzhou 510640, China
- Ministry of Agriculture Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
- Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China
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Kwak W, Song KD, Oh JD, Heo KN, Lee JH, Lee WK, Yoon SH, Kim H, Cho S, Lee HK. Uncovering genomic features and maternal origin of korean native chicken by whole genome sequencing. PLoS One 2014; 9:e114763. [PMID: 25501044 PMCID: PMC4263466 DOI: 10.1371/journal.pone.0114763] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Accepted: 11/13/2014] [Indexed: 11/18/2022] Open
Abstract
The Korean Native Chicken (KNC) is an important endemic biological resource in Korea. While numerous studies have been conducted exploring this breed, none have used next-generation sequencing to identify its specific genomic features. We sequenced five strains of KNC and identified 10.9 million SNVs and 1.3 million InDels. Through the analysis, we found that the highly variable region common to all 5 strains had genes like PCHD15, CISD1, PIK3C2A, and NUCB2 that might be related to the phenotypic traits of the chicken such as auditory sense, growth rate and egg traits. In addition, we assembled unaligned reads that could not be mapped to the reference genome. By assembling the unaligned reads, we were able to present genomic sequences characteristic to the KNC. Based on this, we also identified genes related to the olfactory receptors and antigen that are common to all 5 strains. Finally, through the reconstructed mitochondrial genome sequences, we performed phylogenomic analysis and elucidated the maternal origin of the artificially restored KNC. Our results revealed that the KNC has multiple maternal origins which are in agreement with Korea's history of chicken breed imports. The results presented here provide a valuable basis for future research on genomic features of KNC and further understanding of KNC's origin.
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Affiliation(s)
- Woori Kwak
- C & K genomics, Seoul, Republic of Korea
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, Republic of Korea
| | - Ki-Duk Song
- Genomic Informatics Center, Hankyong National University, Anseong, Republic of Korea
| | - Jae-Don Oh
- Genomic Informatics Center, Hankyong National University, Anseong, Republic of Korea
| | - Kang-Nyeong Heo
- Poultry Science Division, National Institute of Animal Science, Cheonan, Republic of Korea
| | - Jun-Heon Lee
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon, Republic of Korea
| | - Woon Kyu Lee
- Inha Research Institute for Medical Sciences, Inha University School of Medicine, Inchon, Republic of Korea
| | - Sook Hee Yoon
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Heebal Kim
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Seoae Cho
- C & K genomics, Seoul, Republic of Korea
| | - Hak-Kyo Lee
- Genomic Informatics Center, Hankyong National University, Anseong, Republic of Korea
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Marie P, Labas V, Brionne A, Harichaux G, Hennequet-Antier C, Nys Y, Gautron J. Quantitative proteomics and bioinformatic analysis provide new insight into protein function during avian eggshell biomineralization. J Proteomics 2014; 113:178-93. [PMID: 25284052 DOI: 10.1016/j.jprot.2014.09.024] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 09/25/2014] [Accepted: 09/26/2014] [Indexed: 01/12/2023]
Abstract
UNLABELLED Gallus gallus eggshell is a bioceramic composed of 95% calcium carbonate in calcitic form and 3.5% extracellular organic matrix. The calcification process occurs in the uterine fluid where biomineralization follows a temporal sequence corresponding to the initiation, growth and termination stages of crystal growth. Eggshell texture and its ultrastructure are regulated by organic matrix proteins, which control mineralization process and influence the eggshell biomechanical properties. We performed proteomic qualitative analyses and identified 308 uterine fluid proteins. Quantitative analysis showed differential abundances at the three stages of shell biomineralization for 64 of them. Cluster analysis revealed a first group of proteins related to mineralization and mainly present at the onset of calcification including OVOT, OVAL, OC-17, and two novel calcium binding proteins (EDIL3, MFGE8). A second group of proteins mainly present at the initiation and termination of shell formation was potentially involved in the regulation of the activity of the uterine fluid proteins (e.g. molecular chaperones, folding proteins, proteases and protease inhibitors). OCX21, a protein highly concentrated in the fluid and the shell, belongs to this group. A third group equally represented at all stages of shell mineralization corresponded to antibacterial proteins that could protect the forming egg against microbial invasion. BIOLOGICAL SIGNIFICANCE The calcitic avian eggshell protects the developing embryo and, moreover, ensures that the nutritious table egg remains free of pathogens. The eggshell is formed by nucleation upon a fibrous scaffold (the eggshell membranes) followed by an interaction between the growing mineral crystals and the shell organic matrix. This interaction leads to a highly ordered shell microstructure and texture which contribute to its exceptional mechanical properties. Shell mineralization occurs in three distinct phases of calcification (initiation, growth and termination), which are associated with distinct populations of matrix proteins that are secreted into the acellular uterine fluid as modulators of the process. The recent development of high-throughput methods has led to the identification of many proteins in the shell, but little is known concerning their role in shell formation. In order to determine precisely the importance of particular proteins relative to eggshell mineralization, this project used qualitative and quantitative proteomics of the uterine fluid constituents, coupled with bioinformatic analysis, to predict the functional role of proteins secreted at each of the three main stages of shell calcification. Besides its relevance to food production and to hen reproduction, eggshell calcification is furthermore a relevant model for studying calcium carbonate biomineralization on a two-dimensional membrane support. Better understanding of this process will provide insight into the fabrication of ceramics at ambient pressure and temperature.
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Affiliation(s)
- Pauline Marie
- INRA, UR83 Recherches Avicoles, Fonction et Régulation des Protéines de l'œuf, F-37380 Nouzilly, France
| | - Valérie Labas
- INRA, UMR INRA85, UMR CNRS 7247, Université de Tours, IFCE, Physiologie de la Reproduction et des Comportements, Plate-forme d'Analyse Intégrative des Biomolécules, Laboratoire de Spectrométrie de Masse, F-37380 Nouzilly, France
| | - Aurélien Brionne
- INRA, UR83 Recherches Avicoles, Fonction et Régulation des Protéines de l'œuf, F-37380 Nouzilly, France
| | - Grégoire Harichaux
- INRA, UMR INRA85, UMR CNRS 7247, Université de Tours, IFCE, Physiologie de la Reproduction et des Comportements, Plate-forme d'Analyse Intégrative des Biomolécules, Laboratoire de Spectrométrie de Masse, F-37380 Nouzilly, France
| | | | - Yves Nys
- INRA, UR83 Recherches Avicoles, Fonction et Régulation des Protéines de l'œuf, F-37380 Nouzilly, France
| | - Joël Gautron
- INRA, UR83 Recherches Avicoles, Fonction et Régulation des Protéines de l'œuf, F-37380 Nouzilly, France.
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Baláž M. Eggshell membrane biomaterial as a platform for applications in materials science. Acta Biomater 2014; 10:3827-43. [PMID: 24681370 DOI: 10.1016/j.actbio.2014.03.020] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 03/17/2014] [Accepted: 03/20/2014] [Indexed: 01/13/2023]
Abstract
Eggshell membrane (ESM) is a unique biomaterial, which is generally considered as waste. However, it has extraordinary properties which can be utilized in various fields and its potential applications are therefore now being widely studied. The first part of this review focuses on the chemical composition and morphology of ESM. The main areas of ESM application are discussed in the second part. These applications include its utilization as a biotemplate for the synthesis of nanoparticles; as a sorbent of heavy metals, organics, dyes, sulfonates and fluorides; as the main component of biosensors; in medicine; and various other applications. For each area of interest, a detailed literature survey is given.
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46
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Hincke MT. Understanding control of calcitic biomineralization-proteomics to the rescue. Proteomics 2014; 13:3369-70. [PMID: 24307661 DOI: 10.1002/pmic.201300471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 10/25/2013] [Accepted: 10/28/2013] [Indexed: 12/16/2022]
Abstract
The avian eggshell is one of the fastest calcifying processes known and represents a unique model for studying biomineralization. Eggshell strength is a crucial economic trait for table egg production, and ensures that a safe egg reaches the consumer kitchen. However, a common toolkit for eggshell mineralization has not yet been defined. In this issue, label-free MS-based protein quantification technology has been used by Sun et al. (Proteomics 2013, 13, 3523-3536) to detect differences in protein abundance between eggshell matrix from strong and weak eggs and between the corresponding uterine fluids bathing strong and weak eggs. Proteins associated with the formation of strong eggshells are identified, which are now candidates for further investigations to define the regulatory relationship between specific eggshell matrix proteins and calcite crystal texture.
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47
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Liu Z, Zheng Q, Zhang X, Lu L. Microarray analysis of genes involved with shell strength in layer shell gland at the early stage of active calcification. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2014; 26:609-24. [PMID: 25049830 PMCID: PMC4093333 DOI: 10.5713/ajas.2012.12398] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Revised: 10/08/2012] [Accepted: 09/15/2012] [Indexed: 01/13/2023]
Abstract
The objective of this study was to get a comprehensive understanding of how genes in chicken shell gland modulate eggshell strength at the early stage of active calcification. Four 32-week old of purebred Xianju hens with consistent high or low shell breakage strength were grouped into two pairs. Using Affymetrix Chicken Array, a whole-transcriptome analysis was performed on hen’s shell gland at 9 h post oviposition. Gene ontology enrichment analysis for differentially expressed (DE) transcripts was performed using the web-based GOEAST, and the validation of DE-transcripts was tested by qRT-PCR. 1,195 DE-transcripts, corresponding to 941 unique genes were identified in hens with strong eggshell compared to weak shell hens. According to gene ontology annotations, there are 77 DE-transcripts encoding ion transporters and secreted extracellular matrix proteins, and at least 26 DE-transcripts related to carbohydrate metabolism or post-translation glycosylation modification; furthermore, there are 88 signaling DE-transcripts. GO term enrichment analysis suggests that some DE-transcripts mediate reproductive hormones or neurotransmitters to affect eggshell quality through a complex suite of biophysical processes. These results reveal some candidate genes involved with eggshell strength at the early stage of active calcification which may facilitate our understanding of regulating mechanisms of eggshell quality.
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Affiliation(s)
- Zhangguo Liu
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'an, Zhejiang, 311300, China
| | - Qi Zheng
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'an, Zhejiang, 311300, China
| | - Xueyu Zhang
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'an, Zhejiang, 311300, China
| | - Lizhi Lu
- The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'an, Zhejiang, 311300, China
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Sturm S, Predel R. Serine phosphorylation of CAPA pyrokinin in cockroaches-a taxon-specific posttranslational modification. Peptides 2014; 57:52-8. [PMID: 24793144 DOI: 10.1016/j.peptides.2014.04.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 04/16/2014] [Accepted: 04/16/2014] [Indexed: 10/25/2022]
Abstract
In insects, posttranslational modifications of neuropeptides are largely restricted to C- and N-terminal amino acids. The most common modifications, N-terminal pyroglutamate formation and C-terminal α-amidation, may prevent a fast degradation of these messenger molecules. This is particularly important for peptide hormones. Other common posttranslational modifications of proteins such as glycosylation and phosphorylation seem to be very rare in insect neuropeptides. To check this assumption, we used a computer algorithm to search an extensive data set of MALDI-TOF mass spectra from cockroach tissues for ion signal patterns indicating peptide phosphorylation. The results verify that phosphorylation is indeed very rare. However, a candidate was found and experimentally verified as phosphorylated CAPA pyrokinin (GGGGpSGETSGMWFGPRL-NH2) in the cockroach Lamproblatta albipalpus (Blattidae, Lamproblattinae). Tandem mass spectrometry revealed the phosphorylation site as Ser(5). Phosphorylated CAPA pyrokinin was then also detected in most other cockroach lineages (e.g. Blaberidae, Polyphagidae) but not in closely related blattid species such as Periplaneta americana. This is remarkable since the sequence of CAPA pyrokinin is identical in Lamproblatta and Periplaneta. A consensus sequence of CAPA pyrokinins of cockroaches revealed a conserved motif that suggests phosphorylation by a Four-jointed/FAM20C related kinase.
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Affiliation(s)
- Sebastian Sturm
- Cologne Biocenter, University of Cologne, Zuelpicher Str. 47b, 50674 Cologne, Germany
| | - Reinhard Predel
- Cologne Biocenter, University of Cologne, Zuelpicher Str. 47b, 50674 Cologne, Germany.
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49
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Mann K, Edsinger E. The Lottia gigantea shell matrix proteome: re-analysis including MaxQuant iBAQ quantitation and phosphoproteome analysis. Proteome Sci 2014; 12:28. [PMID: 25018669 PMCID: PMC4094399 DOI: 10.1186/1477-5956-12-28] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 05/01/2014] [Indexed: 12/29/2022] Open
Abstract
Background Although the importance of proteins of the biomineral organic matrix and their posttranslational modifications for biomineralization is generally recognized, the number of published matrix proteomes is still small. This is mostly due to the lack of comprehensive sequence databases, usually derived from genomic sequencing projects. However, in-depth mass spectrometry-based proteomic analysis, which critically depends on high-quality sequence databases, is a very fast tool to identify candidates for functional biomineral matrix proteins and their posttranslational modifications. Identification of such candidate proteins is facilitated by at least approximate quantitation of the identified proteins, because the most abundant ones may also be the most interesting candidates for further functional analysis. Results Re-quantification of previously identified Lottia shell matrix proteins using the intensity-based absolute quantification (iBAQ) method as implemented in the MaxQuant identification and quantitation software showed that only 57 of the 382 accepted identifications constituted 98% of the total identified matrix proteome. This group of proteins did not contain obvious intracellular proteins, such as cytoskeletal components or ribosomal proteins, invariably identified as minor components of high-throughput biomineral matrix proteomes. Fourteen of these major proteins were phosphorylated to a variable extent. All together we identified 52 phospho sites in 20 of the 382 accepted proteins with high confidence. Conclusions We show that iBAQ quantitation may be a useful tool to narrow down the group of functional biomineral matrix protein candidates for further research in cell biology, genetics or materials research. Knowledge of posttranslational modifications in these major proteins could be a valuable addition to previously published proteomes. This is true especially for phosphorylation, because this modification was already shown to modify mineralization processes in some instances.
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Affiliation(s)
- Karlheinz Mann
- Max-Planck-Institut für Biochemie, Abteilung Proteomics und Signaltransduktion, Am Klopferspitz 18, Martinsried D-82152, Germany
| | - Eric Edsinger
- Rokhsar Department, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA ; Present address: Brenner Unit, Okinawa institute of Science and Technology, 1919-0 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
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Brionne A, Nys Y, Hennequet-Antier C, Gautron J. Hen uterine gene expression profiling during eggshell formation reveals putative proteins involved in the supply of minerals or in the shell mineralization process. BMC Genomics 2014; 15:220. [PMID: 24649854 PMCID: PMC3999959 DOI: 10.1186/1471-2164-15-220] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 03/11/2014] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The chicken eggshell is a natural mechanical barrier to protect egg components from physical damage and microbial penetration. Its integrity and strength is critical for the development of the embryo or to ensure for consumers a table egg free of pathogens. This study compared global gene expression in laying hen uterus in the presence or absence of shell calcification in order to characterize gene products involved in the supply of minerals and / or the shell biomineralization process. RESULTS Microarrays were used to identify a repertoire of 302 over-expressed genes during shell calcification. GO terms enrichment was performed to provide a global interpretation of the functions of the over-expressed genes, and revealed that the most over-represented proteins are related to reproductive functions. Our analysis identified 16 gene products encoding proteins involved in mineral supply, and allowed updating of the general model describing uterine ion transporters during eggshell calcification. A list of 57 proteins potentially secreted into the uterine fluid to be active in the mineralization process was also established. They were classified according to their potential functions (biomineralization, proteoglycans, molecular chaperone, antimicrobials and proteases/antiproteases). CONCLUSIONS Our study provides detailed descriptions of genes and corresponding proteins over-expressed when the shell is mineralizing. Some of these proteins involved in the supply of minerals and influencing the shell fabric to protect the egg contents are potentially useful biological markers for the genetic improvement of eggshell quality.
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Affiliation(s)
| | | | | | - Joël Gautron
- INRA, UR83 Recherches Avicoles, F-37380 Nouzilly, France.
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