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Rathore AS, Gupta KK, Govindaraj SK, Ajmani A, Arivalagan J, Anto RJ, Kalishwaralal K, Chandran SA. Targeting BRF2: insights from in silico screening and molecular dynamic simulations. J Biomol Struct Dyn 2023:1-13. [PMID: 37705251 DOI: 10.1080/07391102.2023.2256884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
The Transcription factor II B (TFIIB)‑related factor 2 (BRF2) containing TFIIIB complex recruits RNA polymerase III multi-subunit complex to selective gene promoters that altogether are responsible for synthesizing a variety of small non-coding RNAs, including a special type of selenocysteine tRNA (tRNASec), micro-RNA (miRNA), and other regulatory RNAs. BRF2 has been identified as a potential oncogene that promotes cancer cell survival under oxidative stress through its genetic activation. The structure of the BRF2 protein was modeled using the Robetta server, refined, and validated using the Ramachandran plot. A virtual approach utilizing molecular docking was used to screen a natural compound library to determine potential compounds that can interact with the molecular pin motif of the BRF2 protein using Maestro (Schrodinger). Subsequent molecular dynamics simulation studies of the top four ligands that exhibited low glide scores were performed using GROMACS. The findings derived from the simulations, in conjunction with the exploration of hydrogen bonding patterns, evaluation of the free energy landscape, and thorough analysis of residue decomposition, collectively converged to emphasize the robust interaction characteristics exhibited by Ligand 366 (Deacetyl lanatoside C) and ligand 336 (Neogitogenin)-with the BRF2 protein. These natural compounds may be potential inhibitors of BRF2, which could modulate the regulation of selenoprotein synthesis in cancer cells. Targeting BRF2 using these promising compounds may offer a new therapeutic approach to sensitize cancer cells to ferroptosis and apoptosis.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | - Krishna Kant Gupta
- School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | | | - Abhishek Ajmani
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, India
| | | | - Ruby John Anto
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, India
| | - Kalimuthu Kalishwaralal
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, India
| | - Sam Aldrin Chandran
- School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
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2
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Ash MK, Bhimalli PP, Cho BK, Mattamana BB, Gambut S, Tarhoni I, Fhied CL, Reyes AF, Welninski SJ, Arivalagan J, Negrão F, Goel R, Beck TL, Hope TJ, Sha BE, Goo YA, Al-Harthi L, Mamede JI, Borgia JA, Kelleher NL, Schneider JR. Bulk IgG glycosylation predicts COVID-19 severity and vaccine antibody response. Cell Rep 2022; 41:111799. [PMID: 36493786 PMCID: PMC9678812 DOI: 10.1016/j.celrep.2022.111799] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 10/13/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022] Open
Abstract
Although vaccination efforts have expanded, there are still gaps in our understanding surrounding the immune response to SARS-CoV-2. Measuring IgG Fc glycosylation provides insight into an infected individual's inflammatory state, among other functions. We set out to interrogate bulk IgG glycosylation changes from SARS-CoV-2 infection and vaccination, using plasma from mild or hospitalized COVID-19 patients, and from vaccinated individuals. Inflammatory glycans are elevated in hospitalized COVID-19 patients and increase over time, while mild patients have anti-inflammatory glycans that increase over time, including increased sialic acid correlating with RBD antibody levels. Vaccinated individuals with low RBD antibody levels and low neutralization have the same IgG glycan traits as hospitalized COVID-19 patients. In addition, a small vaccinated cohort reveals a decrease in inflammatory glycans associated with peak IgG concentrations and neutralization. This report characterizes the bulk IgG glycome associated with COVID-19 severity and vaccine responsiveness and can help guide future studies into SARS-CoV-2 protective immunity.
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Affiliation(s)
- Michelle K. Ash
- Department of Microbial Pathogens & Immunity, Rush University Medical Center, Cohn Research Building, 1735 W. Harrison St., Chicago, IL 60612, USA
| | - Pavan P. Bhimalli
- Department of Microbial Pathogens & Immunity, Rush University Medical Center, Cohn Research Building, 1735 W. Harrison St., Chicago, IL 60612, USA
| | - Byoung-Kyu Cho
- Proteomics Center of Excellence, Northwestern University, Evanston, IL, USA
| | | | - Stéphanie Gambut
- Department of Microbial Pathogens & Immunity, Rush University Medical Center, Cohn Research Building, 1735 W. Harrison St., Chicago, IL 60612, USA
| | - Imad Tarhoni
- Department of Anatomy & Cell Biology, Rush University Medical Center, Chicago, IL, USA
| | - Cristina L. Fhied
- Department of Anatomy & Cell Biology, Rush University Medical Center, Chicago, IL, USA
| | - Anjelica F. Reyes
- Department of Microbial Pathogens & Immunity, Rush University Medical Center, Cohn Research Building, 1735 W. Harrison St., Chicago, IL 60612, USA
| | - Samantha J. Welninski
- Department of Microbial Pathogens & Immunity, Rush University Medical Center, Cohn Research Building, 1735 W. Harrison St., Chicago, IL 60612, USA
| | - Jaison Arivalagan
- Proteomics Center of Excellence, Northwestern University, Evanston, IL, USA
| | - Fernanda Negrão
- Proteomics Center of Excellence, Northwestern University, Evanston, IL, USA
| | - Renu Goel
- Proteomics Center of Excellence, Northwestern University, Evanston, IL, USA,Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Todd L. Beck
- Statistics Core, Rush University Medical Center, Chicago, IL, USA
| | - Thomas J. Hope
- Department of Biomedical Engineering, Northwestern University, Chicago, IL, USA,Department of Cell & Developmental Biology, Northwestern University, Chicago, IL, USA,Department of Obstetrics & Gynecology, Northwestern University, Chicago, IL, USA,Feinberg School of Medicine, Northwestern University, Chicago, IL, USA,Chemistry of Life Processes Institute, Northwestern University, Chicago, IL, USA
| | - Beverly E. Sha
- Division of Infectious Diseases, Rush University Medical Center, Chicago, IL, USA
| | - Young Ah Goo
- Proteomics Center of Excellence, Northwestern University, Evanston, IL, USA
| | - Lena Al-Harthi
- Department of Microbial Pathogens & Immunity, Rush University Medical Center, Cohn Research Building, 1735 W. Harrison St., Chicago, IL 60612, USA
| | - João I. Mamede
- Department of Microbial Pathogens & Immunity, Rush University Medical Center, Cohn Research Building, 1735 W. Harrison St., Chicago, IL 60612, USA
| | - Jeffrey A. Borgia
- Department of Anatomy & Cell Biology, Rush University Medical Center, Chicago, IL, USA,Department of Pathology, Rush University Medical Center, Chicago, IL, USA
| | - Neil L. Kelleher
- Proteomics Center of Excellence, Northwestern University, Evanston, IL, USA,Department of Chemistry, Northwestern University, Chicago, IL, USA,Department of Molecular Biosciences, Northwestern University, Chicago, IL, USA,Feinberg School of Medicine, Northwestern University, Chicago, IL, USA,Chemistry of Life Processes Institute, Northwestern University, Chicago, IL, USA
| | - Jeffrey R. Schneider
- Department of Microbial Pathogens & Immunity, Rush University Medical Center, Cohn Research Building, 1735 W. Harrison St., Chicago, IL 60612, USA,Corresponding author
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3
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Ramakrishnan M, Arivalagan J, Satish L, Mohan M, Samuel Selvan Christyraj JR, Chandran SA, Ju HJ, John L A, Ramesh T, Ignacimuthu S, Kalishwaralal K. Selenium: a potent regulator of ferroptosis and biomass production. Chemosphere 2022; 306:135531. [PMID: 35780987 DOI: 10.1016/j.chemosphere.2022.135531] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/01/2022] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
Emerging evidence supports the notion that selenium (Se) plays a beneficial role in plant development for modern crop production and is considered an essential micronutrient and the predominant source of plants. However, the essential role of selenium in plant metabolism remains unclear. When used in moderate concentrations, selenium promotes plant physiological processes such as enhancing plant growth, increasing antioxidant capacity, reducing reactive oxygen species and lipid peroxidation and offering stress resistance by preventing ferroptosis cell death. Ferroptosis, a recently discovered mechanism of regulated cell death (RCD) with unique features such as iron-dependant accumulation of lipid peroxides, is distinctly different from other known forms of cell death. Glutathione peroxidase (GPX) activity plays a significant role in scavenging the toxic by-products of lipid peroxidation in plants. A low level of GPX activity in plants causes high oxidative stress, which leads to ferroptosis. An integrated view of ferroptosis and selenium in plants and the selenium-mediated nanofertilizers (SeNPs) have been discussed in more recent studies. For instance, selenium supplementation enhanced GPX4 expression and increased TFH cell (Follicular helper T) numbers and the gene transcriptional program, which prevent lipid peroxidase and protect cells from ferroptosis. However, though ferroptosis in plants is similar to that in animals, only few studies have focused on plant-specific ferroptosis; the research on ferroptosis in plants is still in its infancy. Understanding the implication of selenium with relevance to ferroptosis is indispensable for plant bioresource technology. In this review, we hypothesize that blocking ferroptosis cell death improves plant immunity and protects plants from abiotic and biotic stresses. We also examine how SeNPs can be the basis for emerging unconventional and advanced technologies for algae/bamboo biomass production. For instance, algae treated with SeNPs accumulate high lipid profile in algal cells that could thence be used for biodiesel production. We also suggest that further studies in the field of SeNPs are essential for the successful application of this technology for the large-scale production of plant biomass.
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Affiliation(s)
- Muthusamy Ramakrishnan
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China; Bamboo Research Institute, Nanjing Forestry University, Nanjing 210037, Jiangsu, China
| | - Jaison Arivalagan
- Department of Chemistry, Molecular Biosciences and Proteomics Center of Excellence, Northwestern University, Evanston, IL, 60208, USA
| | - Lakkakula Satish
- Department of Biotechnology Engineering, & The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; Applied Phycology and Biotechnology Division, Marine Algal Research Station, CSIR - Central Salt and Marine Chemicals Research Institute, Mandapam 623519, Tamil Nadu, India
| | - Manikandan Mohan
- College of Pharmacy, University of Georgia, Athens, GA, USA; VAXIGEN International Research Center Private Limited, India
| | - Johnson Retnaraj Samuel Selvan Christyraj
- Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamilnadu, India
| | - Sam Aldrin Chandran
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, 613 401 India
| | - Ho-Jong Ju
- Department of Agricultural Biology, College of Agriculture & Life Sciences, Jeonbuk National University, Jeonju-si, 54896, Republic of Korea
| | - Anoopa John L
- The Dale View College of Pharmacy and Research Centre, Thiruvananthapuram, Kerala, India
| | - Thiyagarajan Ramesh
- Deapartment of Basic Medical Sciences, College of Medicine, Prince Sattam Bin Abdulaziz University,P.O.Box:173, AI-Kharaj 11942,Saudi Arabia
| | | | - Kalimuthu Kalishwaralal
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, Kerala, India.
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4
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Leung W, Teater M, Durmaz C, Meydan C, Chivu AG, Chadburn A, Rice EJ, Muley A, Camarillo JM, Arivalagan J, Li Z, Flowers CR, Kelleher NL, Danko CG, Imielinski M, Dave SS, Armstrong SA, Mason CE, Melnick AM. SETD2 Haploinsufficiency Enhances Germinal Center-Associated AICDA Somatic Hypermutation to Drive B-cell Lymphomagenesis. Cancer Discov 2022; 12:1782-1803. [PMID: 35443279 PMCID: PMC9262862 DOI: 10.1158/2159-8290.cd-21-1514] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/08/2022] [Accepted: 04/18/2022] [Indexed: 01/26/2023]
Abstract
SETD2 is the sole histone methyltransferase responsible for H3K36me3, with roles in splicing, transcription initiation, and DNA damage response. Homozygous disruption of SETD2 yields a tumor suppressor effect in various cancers. However, SETD2 mutation is typically heterozygous in diffuse large B-cell lymphomas. Here we show that heterozygous Setd2 deficiency results in germinal center (GC) hyperplasia and increased competitive fitness, with reduced DNA damage checkpoint activity and apoptosis, resulting in accelerated lymphomagenesis. Impaired DNA damage sensing in Setd2-haploinsufficient germinal center B (GCB) and lymphoma cells associated with increased AICDA-induced somatic hypermutation, complex structural variants, and increased translocations including those activating MYC. DNA damage was selectively increased on the nontemplate strand, and H3K36me3 loss was associated with greater RNAPII processivity and mutational burden, suggesting that SETD2-mediated H3K36me3 is required for proper sensing of cytosine deamination. Hence, Setd2 haploinsufficiency delineates a novel GCB context-specific oncogenic pathway involving defective epigenetic surveillance of AICDA-mediated effects on transcribed genes. SIGNIFICANCE Our findings define a B cell-specific oncogenic effect of SETD2 heterozygous mutation, which unleashes AICDA mutagenesis of nontemplate strand DNA in the GC reaction, resulting in lymphomas with heavy mutational burden. GC-derived lymphomas did not tolerate SETD2 homozygous deletion, pointing to a novel context-specific therapeutic vulnerability. This article is highlighted in the In This Issue feature, p. 1599.
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Affiliation(s)
- Wilfred Leung
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medicine, Cornell University, New York, New York
- Department of Biomedical Sciences, Cornell University, Ithaca, New York
| | - Matt Teater
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medicine, Cornell University, New York, New York
| | - Ceyda Durmaz
- Graduate Program of Physiology, Biophysics and Systems Biology, Weill Cornell Medicine, New York, New York
| | - Cem Meydan
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, New York
- The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine, Weill Cornell Medicine, New York, New York
- The WorldQuant Initiative for Quantitative Prediction, Weill Cornell Medicine, New York, New York
| | - Alexandra G Chivu
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York
| | - Amy Chadburn
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York
| | - Edward J Rice
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York
| | - Ashlesha Muley
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medicine, Cornell University, New York, New York
| | - Jeannie M Camarillo
- Departments of Chemistry, Molecular Biosciences and the National Resource for Translational and Developmental Proteomics, Northwestern University, Evanston, Illinois
| | - Jaison Arivalagan
- Departments of Chemistry, Molecular Biosciences and the National Resource for Translational and Developmental Proteomics, Northwestern University, Evanston, Illinois
| | - Ziyi Li
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Christopher R Flowers
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Neil L Kelleher
- Departments of Chemistry, Molecular Biosciences and the National Resource for Translational and Developmental Proteomics, Northwestern University, Evanston, Illinois
| | - Charles G Danko
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York
| | - Marcin Imielinski
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York
- New York Genome Center, New York, New York
- Caryl and Israel Englander Institute for Precision Medicine and Meyer Cancer Center, Weill Cornell Medicine, New York, New York
| | - Sandeep S Dave
- Center for Genomic and Computational Biology and Department of Medicine, Duke University, Durham, North Carolina
| | - Scott A Armstrong
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Christopher E Mason
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, New York
- The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine, Weill Cornell Medicine, New York, New York
- The WorldQuant Initiative for Quantitative Prediction, Weill Cornell Medicine, New York, New York
- The Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York
| | - Ari M Melnick
- Division of Hematology/Oncology, Department of Medicine, Weill Cornell Medicine, Cornell University, New York, New York
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5
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Kalimuthu K, Keerthana CK, Mohan M, Arivalagan J, Christyraj JRSS, Firer MA, Choudry MHA, Anto RJ, Lee YJ. The emerging role of selenium metabolic pathways in cancer: New therapeutic targets for cancer. J Cell Biochem 2022; 123:532-542. [PMID: 34935169 PMCID: PMC8940641 DOI: 10.1002/jcb.30196] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/11/2021] [Accepted: 12/07/2021] [Indexed: 01/10/2023]
Abstract
Selenium (Se) is incorporated into the body via the selenocysteine (Sec) biosynthesis pathway, which is critical in the synthesis of selenoproteins, such as glutathione peroxidases and thioredoxin reductases. Selenoproteins, which play a key role in several biological processes, including ferroptosis, drug resistance, endoplasmic reticulum stress, and epigenetic processes, are guided by Se uptake. In this review, we critically analyze the molecular mechanisms of Se metabolism and its potential as a therapeutic target for cancer. Sec insertion sequence binding protein 2 (SECISBP2), which is a positive regulator for the expression of selenoproteins, would be a novel prognostic predictor and an alternate target for cancer. We highlight strategies that attempt to develop a novel Se metabolism-based approach to uncover a new metabolic drug target for cancer therapy. Moreover, we expect extensive clinical use of SECISBP2 as a specific biomarker in cancer therapy in the near future. Of note, scientists face additional challenges in conducting successful research, including investigations on anticancer peptides to target SECISBP2 intracellular protein.
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Affiliation(s)
- Kalishwaralal Kalimuthu
- Department of Surgery, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, Kerala, India
| | | | - Manikandan Mohan
- College of Pharmacy, University of Georgia, Athens, GA, USA.,VAXIGEN International Research Center Private Limited, INDIA
| | - Jaison Arivalagan
- Department of Chemistry, Molecular Biosciences and Proteomics Center of Excellence, Northwestern University, Evanston, IL, 60208, USA
| | - Johnson Retnaraj Samuel Selvan Christyraj
- Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamilnadu, India
| | - Michael A Firer
- Dept. Chemical Engineering, Ariel University, 40700, Ariel, Israel.,Adelson School of Medicine, Ariel University, Ariel, 40700, Israel,Ariel Center for Applied Cancer Research, Ariel University, Ariel 40700, Israel
| | - M. Haroon A Choudry
- Department of Surgery, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Ruby John Anto
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, Kerala, India.,Correspondence: All correspondence should be addressed to Dr. Yong J. Lee, Department of Surgery, University of Pittsburgh, Hillman Cancer Center, 5117 Centre Ave. Room 1.46C, Pittsburgh, PA 15213,U.S.A., Tel: (412) 623-3268, Fax: (412) 623-7709, ., Dr. Ruby John Anto, Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, Kerala, India.
| | - Yong J Lee
- Department of Surgery, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Correspondence: All correspondence should be addressed to Dr. Yong J. Lee, Department of Surgery, University of Pittsburgh, Hillman Cancer Center, 5117 Centre Ave. Room 1.46C, Pittsburgh, PA 15213,U.S.A., Tel: (412) 623-3268, Fax: (412) 623-7709, ., Dr. Ruby John Anto, Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, Kerala, India.
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Kalimuthu K, Arivalagan J, Mohan M, Samuel Selvan Christyraj JR, Arockiaraj J, Muthusamy R, Ju HJ. Point of care diagnosis of plant virus: Current trends and prospects. Mol Cell Probes 2021; 61:101779. [PMID: 34798294 DOI: 10.1016/j.mcp.2021.101779] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 11/14/2021] [Accepted: 11/14/2021] [Indexed: 11/24/2022]
Abstract
Plant viral diseases accounts for major global economic losses in modern-day agriculture. Plant viral disease management is the primary challenge for both farmers and researchers. Detection and identification of plant viruses are of paramount importance for successful management of a viral disease. Recent advancements in molecular biology have contributed to significant progress in the development of new, sensitive, and effective diagnostic methods. However, most techniques are neither time/cost-effective nor user-friendly and require sophisticated labs. Hence, the past few decades of agricultural research have mainly focused on developing farmer-friendly, point-of-care diagnostic tools that provide high-sensitive rapid diagnosis. The current trend in plant virus diagnostic tools is cheaper, easy-to-use portable devices with no compromise on sensitivity and reproducibility.
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Affiliation(s)
- Kalishwaralal Kalimuthu
- Department of Agricultural Biology, College of Agriculture & Life Sciences, Jeonbuk National University, Jeonju-si, 54896, Republic of Korea; Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, Kerala, India.
| | - Jaison Arivalagan
- Department of Chemistry, Molecular Biosciences and Proteomics Center of Excellence, Northwestern University, Evanston, IL, 60208, USA
| | - Manikandan Mohan
- College of Pharmacy, University of Georgia, Athens, GA, USA; VAXIGEN International Research Center Private Limited, India
| | - Johnson Retnaraj Samuel Selvan Christyraj
- Regeneration, and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamilnadu, India
| | - Jesu Arockiaraj
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603203, Chennai, India; Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, 603203, Chennai, India
| | - Ramakrishnan Muthusamy
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, Jiangsu, 210037, China
| | - Ho-Jong Ju
- Department of Agricultural Biology, College of Agriculture & Life Sciences, Jeonbuk National University, Jeonju-si, 54896, Republic of Korea.
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Arivalagan J, Marie B, Chiappetta G, Vinh J, Gallet X, Lebon M, M'Zoudi S, Dubois P, Berland S, Marie A. Deciphering shell proteome within different Baltic populations of mytilid mussels illustrates important local variability and potential consequences in the context of changing marine conditions. Sci Total Environ 2020; 745:140878. [PMID: 32721612 DOI: 10.1016/j.scitotenv.2020.140878] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
Molluscs defend themselves against predation and environmental stressors through the possession of mineralized shells. Mussels are widely used to predict the effects of abiotic factors such as salinity and pH on marine calcifiers in the context of changing ocean conditions. Shell matrix proteins are part of the molecular control regulating the biomineralization processes underpinning shell production. Under changing environmental conditions, differential expression of these proteins leads to the phenotypic plasticity of shells seen in many mollusc species. Low salinity decreases the availability of calcium and inorganic carbon in seawater and consequently energetic constraints often lead to thin, small and fragile shells in Mytilid mussels inhabiting Baltic Sea. To understand how the modulation of shell matrix proteins alters biomineralization, we compared the shell proteomes of mussels living under full marine conditions in the North Sea to those living in the low saline Baltic Sea. Modulation of proteins comprising the Mytilus biomineralization tool kit is observed. These data showed a relative increase in chitin related proteins, decrease in SD-rich, GA-rich shell matrix proteins indicating that altered protein scaffolding and mineral nucleation lead to impaired shell microstructures influencing shell resistance in Baltic Mytilid mussels. Interestingly, proteins with immunity domains in the shell matrix are also found to be modulated. Shell traits such as periostracum thickness, organic content and fracture resistance qualitatively correlates with the modulation of SMPs in Mytilid mussels providing key insights into control of biomineralization at molecular level in the context of changing marine conditions.
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Affiliation(s)
- Jaison Arivalagan
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Sorbonne Universités, Muséum national d'Histoire naturelle, 75005 Paris, France; UMR 7208 CNRS/MNHN/UPMC/IRD Biologie des Organismes Aquatiques et Ecosystèmes, Sorbonne Universités, Muséum national d'Histoire naturelle, 75005 Paris, France
| | - Benjamin Marie
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Sorbonne Universités, Muséum national d'Histoire naturelle, 75005 Paris, France
| | | | - Joëlle Vinh
- USR3149, ESPCI ParisTech, 75005 Paris, France
| | - Xavier Gallet
- UMR 7194, Département de préhistoire, Musée de l'Homme, 75116 Paris, France
| | - Matthieu Lebon
- UMR 7194, Département de préhistoire, Musée de l'Homme, 75116 Paris, France
| | - Saloua M'Zoudi
- Laboratoire de Biologie marine CP160/15, Université Libre de Bruxelles, B-1050 Bruxelles, Belgium
| | - Philippe Dubois
- Laboratoire de Biologie marine CP160/15, Université Libre de Bruxelles, B-1050 Bruxelles, Belgium
| | - Sophie Berland
- UMR 7208 CNRS/MNHN/UPMC/IRD Biologie des Organismes Aquatiques et Ecosystèmes, Sorbonne Universités, Muséum national d'Histoire naturelle, 75005 Paris, France
| | - Arul Marie
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Sorbonne Universités, Muséum national d'Histoire naturelle, 75005 Paris, France.
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8
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Clark MS, Peck LS, Arivalagan J, Backeljau T, Berland S, Cardoso JCR, Caurcel C, Chapelle G, De Noia M, Dupont S, Gharbi K, Hoffman JI, Last KS, Marie A, Melzner F, Michalek K, Morris J, Power DM, Ramesh K, Sanders T, Sillanpää K, Sleight VA, Stewart-Sinclair PJ, Sundell K, Telesca L, Vendrami DLJ, Ventura A, Wilding TA, Yarra T, Harper EM. Deciphering mollusc shell production: the roles of genetic mechanisms through to ecology, aquaculture and biomimetics. Biol Rev Camb Philos Soc 2020; 95:1812-1837. [PMID: 32737956 DOI: 10.1111/brv.12640] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/17/2020] [Accepted: 07/17/2020] [Indexed: 12/20/2022]
Abstract
Most molluscs possess shells, constructed from a vast array of microstructures and architectures. The fully formed shell is composed of calcite or aragonite. These CaCO3 crystals form complex biocomposites with proteins, which although typically less than 5% of total shell mass, play significant roles in determining shell microstructure. Despite much research effort, large knowledge gaps remain in how molluscs construct and maintain their shells, and how they produce such a great diversity of forms. Here we synthesize results on how shell shape, microstructure, composition and organic content vary among, and within, species in response to numerous biotic and abiotic factors. At the local level, temperature, food supply and predation cues significantly affect shell morphology, whilst salinity has a much stronger influence across latitudes. Moreover, we emphasize how advances in genomic technologies [e.g. restriction site-associated DNA sequencing (RAD-Seq) and epigenetics] allow detailed examinations of whether morphological changes result from phenotypic plasticity or genetic adaptation, or a combination of these. RAD-Seq has already identified single nucleotide polymorphisms associated with temperature and aquaculture practices, whilst epigenetic processes have been shown significantly to modify shell construction to local conditions in, for example, Antarctica and New Zealand. We also synthesize results on the costs of shell construction and explore how these affect energetic trade-offs in animal metabolism. The cellular costs are still debated, with CaCO3 precipitation estimates ranging from 1-2 J/mg to 17-55 J/mg depending on experimental and environmental conditions. However, organic components are more expensive (~29 J/mg) and recent data indicate transmembrane calcium ion transporters can involve considerable costs. This review emphasizes the role that molecular analyses have played in demonstrating multiple evolutionary origins of biomineralization genes. Although these are characterized by lineage-specific proteins and unique combinations of co-opted genes, a small set of protein domains have been identified as a conserved biomineralization tool box. We further highlight the use of sequence data sets in providing candidate genes for in situ localization and protein function studies. The former has elucidated gene expression modularity in mantle tissue, improving understanding of the diversity of shell morphology synthesis. RNA interference (RNAi) and clustered regularly interspersed short palindromic repeats - CRISPR-associated protein 9 (CRISPR-Cas9) experiments have provided proof of concept for use in the functional investigation of mollusc gene sequences, showing for example that Pif (aragonite-binding) protein plays a significant role in structured nacre crystal growth and that the Lsdia1 gene sets shell chirality in Lymnaea stagnalis. Much research has focused on the impacts of ocean acidification on molluscs. Initial studies were predominantly pessimistic for future molluscan biodiversity. However, more sophisticated experiments incorporating selective breeding and multiple generations are identifying subtle effects and that variability within mollusc genomes has potential for adaption to future conditions. Furthermore, we highlight recent historical studies based on museum collections that demonstrate a greater resilience of molluscs to climate change compared with experimental data. The future of mollusc research lies not solely with ecological investigations into biodiversity, and this review synthesizes knowledge across disciplines to understand biomineralization. It spans research ranging from evolution and development, through predictions of biodiversity prospects and future-proofing of aquaculture to identifying new biomimetic opportunities and societal benefits from recycling shell products.
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Affiliation(s)
- Melody S Clark
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB3 0ET, U.K
| | - Lloyd S Peck
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB3 0ET, U.K
| | - Jaison Arivalagan
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Sorbonne Universités, Muséum National d'Histoire Naturelle, Paris, France.,Proteomics Center of Excellence, Northwestern University, 710 N Fairbanks Ct, Chicago, IL, U.S.A
| | - Thierry Backeljau
- Royal Belgian Institute of Natural Sciences, Rue Vautier 29, Brussels, B-1000, Belgium.,Evolutionary Ecology Group, University of Antwerp, Universiteitsplein 1, Antwerp, B-2610, Belgium
| | - Sophie Berland
- UMR 7208 CNRS/MNHN/UPMC/IRD Biologie des Organismes Aquatiques et Ecosystèmes, Sorbonne Universités, Muséum National d'Histoire Naturelle, Paris, France
| | - Joao C R Cardoso
- Centro de Ciencias do Mar, Universidade do Algarve, Campus de Gambelas, Faro, 8005-139, Portugal
| | - Carlos Caurcel
- Ashworth Laboratories, Institute of Evolutionary Biology, University of Edinburgh, Charlotte Auerbach Road, Edinburgh, EH9 3FL, U.K
| | - Gauthier Chapelle
- Royal Belgian Institute of Natural Sciences, Rue Vautier 29, Brussels, B-1000, Belgium
| | - Michele De Noia
- Department of Animal Behavior, University of Bielefeld, Postfach 100131, Bielefeld, 33615, Germany.,Institute of Biodiversity Animal Health and Comparative Medicine, University of Glasgow, Glasgow, G12 8QQ, U.K
| | - Sam Dupont
- Department of Biological and Environmental Sciences, University of Göteburg, Box 463, Göteburg, SE405 30, Sweden
| | - Karim Gharbi
- Ashworth Laboratories, Institute of Evolutionary Biology, University of Edinburgh, Charlotte Auerbach Road, Edinburgh, EH9 3FL, U.K
| | - Joseph I Hoffman
- Department of Animal Behavior, University of Bielefeld, Postfach 100131, Bielefeld, 33615, Germany
| | - Kim S Last
- Scottish Association for Marine Science, Scottish Marine Institute, Oban, Argyll, PA37 1QA, U.K
| | - Arul Marie
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Sorbonne Universités, Muséum National d'Histoire Naturelle, Paris, France
| | - Frank Melzner
- GEOMAR Helmholtz Centre for Ocean Research, Kiel, 24105, Germany
| | - Kati Michalek
- Scottish Association for Marine Science, Scottish Marine Institute, Oban, Argyll, PA37 1QA, U.K
| | - James Morris
- Royal Belgian Institute of Natural Sciences, Rue Vautier 29, Brussels, B-1000, Belgium
| | - Deborah M Power
- Centro de Ciencias do Mar, Universidade do Algarve, Campus de Gambelas, Faro, 8005-139, Portugal
| | - Kirti Ramesh
- GEOMAR Helmholtz Centre for Ocean Research, Kiel, 24105, Germany
| | - Trystan Sanders
- GEOMAR Helmholtz Centre for Ocean Research, Kiel, 24105, Germany
| | - Kirsikka Sillanpää
- Swemarc, Department of Biological and Environmental Science, University of Gothenburg, Box 463, Gothenburg, SE405 30, Sweden
| | - Victoria A Sleight
- School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen, AB24 2TZ, U.K
| | | | - Kristina Sundell
- Swemarc, Department of Biological and Environmental Science, University of Gothenburg, Box 463, Gothenburg, SE405 30, Sweden
| | - Luca Telesca
- Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, U.K
| | - David L J Vendrami
- Department of Animal Behavior, University of Bielefeld, Postfach 100131, Bielefeld, 33615, Germany
| | - Alexander Ventura
- Department of Biological and Environmental Sciences, University of Göteburg, Box 463, Göteburg, SE405 30, Sweden
| | - Thomas A Wilding
- Scottish Association for Marine Science, Scottish Marine Institute, Oban, Argyll, PA37 1QA, U.K
| | - Tejaswi Yarra
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB3 0ET, U.K.,Ashworth Laboratories, Institute of Evolutionary Biology, University of Edinburgh, Charlotte Auerbach Road, Edinburgh, EH9 3FL, U.K
| | - Elizabeth M Harper
- Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, U.K
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Marie B, Arivalagan J, Mathéron L, Bolbach G, Berland S, Marie A, Marin F. Deep conservation of bivalve nacre proteins highlighted by shell matrix proteomics of the Unionoida Elliptio complanata and Villosa lienosa. J R Soc Interface 2017; 14:rsif.2016.0846. [PMID: 28123096 DOI: 10.1098/rsif.2016.0846] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 12/20/2016] [Indexed: 01/12/2023] Open
Abstract
The formation of the molluscan shell nacre is regulated to a large extent by a matrix of extracellular macromolecules that are secreted by the shell-forming tissue, the mantle. This so-called 'calcifying matrix' is a complex mixture of proteins, glycoproteins and polysaccharides that is assembled and occluded within the mineral phase during the calcification process. Better molecular-level characterization of the substances that regulate nacre formation is still required. Notable advances in expressed tag sequencing of freshwater mussels, such as Elliptio complanata and Villosa lienosa, provide a pre-requisite to further characterize bivalve nacre proteins by a proteomic approach. In this study, we have identified a total of 48 different proteins from the insoluble matrices of the nacre, 31 of which are common to both E. complanata and V. lienosa A few of these proteins, such as PIF, MSI60, CA, shematrin-like, Kunitz-like, LamG, chitin-binding-containing proteins, together with A-, D-, G-, M- and Q-rich proteins, appear to be analogues, if not true homologues, of proteins previously described from the pearl oyster or the edible mussel nacre matrices, thus forming a remarkable list of deeply conserved nacre proteins. This work constitutes a comprehensive nacre proteomic study of non-pteriomorphid bivalves that has enabled us to describe the molecular basis of a deeply conserved biomineralization toolkit among nacreous shell-bearing bivalves, with regard to proteins associated with other shell microstructures, with those of other mollusc classes (gastropods, cephalopods) and, finally, with other lophotrochozoans (brachiopods).
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Affiliation(s)
- Benjamin Marie
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Muséum National d'Histoire Naturelle, Sorbonne Universités, Paris, France
| | - Jaison Arivalagan
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Muséum National d'Histoire Naturelle, Sorbonne Universités, Paris, France
| | - Lucrèce Mathéron
- UMR 7203 CNRS/UPMC/ENS/INSERM Laboratoire des Biomolécules, Institut de Biologie Paris Seine, Université Pierre et Marie Curie, Sorbonne Universités, Paris, France
| | - Gérard Bolbach
- UMR 7203 CNRS/UPMC/ENS/INSERM Laboratoire des Biomolécules, Institut de Biologie Paris Seine, Université Pierre et Marie Curie, Sorbonne Universités, Paris, France
| | - Sophie Berland
- UMR 7208 CNRS/MNHN/UPMC/IRD Biologie des Organismes Aquatiques et Ecosystèmes, Muséum National d'Histoire Naturelle, Sorbonne Universités, Paris, France
| | - Arul Marie
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Muséum National d'Histoire Naturelle, Sorbonne Universités, Paris, France
| | - Frédéric Marin
- UMR 6282 CNRS/uB Biogéosciences, Université de Bourgogne Franche-Comté (UB-FC), Dijon, France
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10
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Abstract
Bivalves have evolved a range of complex shell forming mechanisms that are reflected by their incredible diversity in shell mineralogy and microstructures. A suite of proteins exported to the shell matrix space plays a significant role in controlling these features, in addition to underpinning some of the physical properties of the shell itself. Although, there is a general consensus that a minimum basic protein tool kit is required for shell construction, to date, this remains undefined. In this study, the shell matrix proteins (SMPs) of four highly divergent bivalves (The Pacific oyster, Crassostrea gigas; the blue mussel, Mytilus edulis; the clam, Mya truncata, and the king scallop, Pecten maximus) were analyzed in an identical fashion using proteomics pipeline. This enabled us to identify the critical elements of a "basic tool kit" for calcification processes, which were conserved across the taxa irrespective of the shell morphology and arrangement of the crystal surfaces. In addition, protein domains controlling the crystal layers specific to aragonite and calcite were also identified. Intriguingly, a significant number of the identified SMPs contained domains related to immune functions. These were often are unique to each species implying their involvement not only in immunity, but also environmental adaptation. This suggests that the SMPs are selectively exported in a complex mix to endow the shell with both mechanical protection and biochemical defense.
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Affiliation(s)
- Jaison Arivalagan
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Sorbonne Universités, Muséum national d'Histoire naturelle, Paris, France
- UMR 7208 CNRS/MNHN/UPMC/IRD Biologie des Organismes Aquatiques et Ecosystèmes, Sorbonne Universités, Muséum national d'Histoire naturelle, Paris, France
| | - Tejaswi Yarra
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, United Kingdom
- University of Edinburgh, Institute of Evolutionary Biology, Ashworth Laboratories, Charlotte Auerbach Road, Edinburgh, United Kingdom
| | - Benjamin Marie
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Sorbonne Universités, Muséum national d'Histoire naturelle, Paris, France
| | - Victoria A Sleight
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, United Kingdom
| | - Evelyne Duvernois-Berthet
- UMR 7221 CNRS/MNHN Evolution des Régulations Endocriniennes, Sorbonne Universités, Muséum national d'Histoire naturelle, Paris, France
| | - Melody S Clark
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, United Kingdom
| | - Arul Marie
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Sorbonne Universités, Muséum national d'Histoire naturelle, Paris, France
| | - Sophie Berland
- UMR 7208 CNRS/MNHN/UPMC/IRD Biologie des Organismes Aquatiques et Ecosystèmes, Sorbonne Universités, Muséum national d'Histoire naturelle, Paris, France
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11
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Arivalagan J, Marie B, Sleight VA, Clark MS, Berland S, Marie A. Shell matrix proteins of the clam, Mya truncata: Roles beyond shell formation through proteomic study. Mar Genomics 2016; 27:69-74. [DOI: 10.1016/j.margen.2016.03.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 02/13/2016] [Accepted: 03/11/2016] [Indexed: 11/30/2022]
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12
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Sleight VA, Thorne MAS, Peck LS, Arivalagan J, Berland S, Marie A, Clark MS. Characterisation of the mantle transcriptome and biomineralisation genes in the blunt-gaper clam, Mya truncata. Mar Genomics 2016; 27:47-55. [PMID: 26777791 DOI: 10.1016/j.margen.2016.01.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/28/2015] [Accepted: 01/07/2016] [Indexed: 12/16/2022]
Abstract
Members of the Myidae family are ecologically and economically important, but there is currently very little molecular data on these species. The present study sequenced and assembled the mantle transcriptome of Mya truncata from the North West coast of Scotland and identified candidate biomineralisation genes. RNA-Seq reads were assembled to create 20,106 contigs in a de novo transciptome, 18.81% of which were assigned putative functions using BLAST sequence similarity searching (cuttoff E-value 1E-10). The most highly expressed genes were compared to the Antarctic clam (Laternula elliptica) and showed that many of the dominant biological functions (muscle contraction, energy production, biomineralisation) in the mantle were conserved. There were however, differences in the constitutive expression of heat shock proteins, which were possibly due to the M. truncata sampling location being at a relatively low latitude, and hence relatively warm, in terms of the global distribution of the species. Phylogenetic analyses of the Tyrosinase proteins from M. truncata showed a gene expansion which was absent in L. elliptica. The tissue distribution expression patterns of putative biomineralisation genes were investigated using quantitative PCR, all genes showed a mantle specific expression pattern supporting their hypothesised role in shell secretion. The present study provides some preliminary insights into how clams from different environments - temperate versus polar - build their shells. In addition, the transcriptome data provides a valuable resource for future comparative studies investigating biomineralisation.
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Affiliation(s)
- Victoria A Sleight
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, UK.
| | - Michael A S Thorne
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, UK
| | - Lloyd S Peck
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, UK
| | - Jaison Arivalagan
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Sorbonne Universités, Muséum National d'Histoire Naturelle, Paris 75005, France; UMR 7208 CNRS/MNHN/UPMC/IRD Biologie des Organismes Aquatiques et Ecosystèmes, Sorbonne Universités, Muséum National d'Histoire Naturelle, Paris 75005, France
| | - Sophie Berland
- UMR 7245 CNRS/MNHN Molécules de Communications et Adaptations des Micro-organismes, Sorbonne Universités, Muséum National d'Histoire Naturelle, Paris 75005, France
| | - Arul Marie
- UMR 7208 CNRS/MNHN/UPMC/IRD Biologie des Organismes Aquatiques et Ecosystèmes, Sorbonne Universités, Muséum National d'Histoire Naturelle, Paris 75005, France
| | - Melody S Clark
- British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, UK
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