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Rao S, Cao H, O'Hanna FJ, Zhou X, Lui A, Wrightstone E, Fish T, Yang Y, Thannhauser T, Cheng L, Dudareva N, Li L. Nudix hydrolase 23 post-translationally regulates carotenoid biosynthesis in plants. Plant Cell 2024; 36:1868-1891. [PMID: 38299382 DOI: 10.1093/plcell/koae030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 12/12/2023] [Accepted: 01/10/2024] [Indexed: 02/02/2024]
Abstract
Carotenoids are essential for photosynthesis and photoprotection. Plants must evolve multifaceted regulatory mechanisms to control carotenoid biosynthesis. However, the regulatory mechanisms and the regulators conserved among plant species remain elusive. Phytoene synthase (PSY) catalyzes the highly regulated step of carotenogenesis and geranylgeranyl diphosphate synthase (GGPPS) acts as a hub to interact with GGPP-utilizing enzymes for the synthesis of specific downstream isoprenoids. Here, we report a function of Nudix hydrolase 23 (NUDX23), a Nudix domain-containing protein, in post-translational regulation of PSY and GGPPS for carotenoid biosynthesis. NUDX23 expresses highly in Arabidopsis (Arabidopsis thaliana) leaves. Overexpression of NUDX23 significantly increases PSY and GGPPS protein levels and carotenoid production, whereas knockout of NUDX23 dramatically reduces their abundances and carotenoid accumulation in Arabidopsis. NUDX23 regulates carotenoid biosynthesis via direct interactions with PSY and GGPPS in chloroplasts, which enhances PSY and GGPPS protein stability in a large PSY-GGPPS enzyme complex. NUDX23 was found to co-migrate with PSY and GGPPS proteins and to be required for the enzyme complex assembly. Our findings uncover a regulatory mechanism underlying carotenoid biosynthesis in plants and offer promising genetic tools for developing carotenoid-enriched food crops.
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Affiliation(s)
- Sombir Rao
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Hongbo Cao
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Franz Joseph O'Hanna
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
| | - Xuesong Zhou
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Andy Lui
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Emalee Wrightstone
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Tara Fish
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
| | - Yong Yang
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
| | - Theodore Thannhauser
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
| | - Lailiang Cheng
- Horticulture Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Natalia Dudareva
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907-2063, USA
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907, USA
- Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907, USA
| | - Li Li
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
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Zhou X, Sun T, Owens L, Yang Y, Fish T, Wrightstone E, Lui A, Yuan H, Chayut N, Burger J, Tadmor Y, Thannhauser T, Guo W, Cheng L, Li L. Carotenoid sequestration protein FIBRILLIN participates in CmOR-regulated β-carotene accumulation in melon. Plant Physiol 2023; 193:643-660. [PMID: 37233026 DOI: 10.1093/plphys/kiad312] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/14/2023] [Accepted: 05/05/2023] [Indexed: 05/27/2023]
Abstract
Chromoplasts are plant organelles with a unique ability to sequester and store massive carotenoids. Chromoplasts have been hypothesized to enable high levels of carotenoid accumulation due to enhanced sequestration ability or sequestration substructure formation. However, the regulators that control the substructure component accumulation and substructure formation in chromoplasts remain unknown. In melon (Cucumis melo) fruit, β-carotene accumulation in chromoplasts is governed by ORANGE (OR), a key regulator for carotenoid accumulation in chromoplasts. By using comparative proteomic analysis of a high β-carotene melon variety and its isogenic line low-β mutant that is defective in CmOr with impaired chromoplast formation, we identified carotenoid sequestration protein FIBRILLIN1 (CmFBN1) as differentially expressed. CmFBN1 expresses highly in melon fruit tissue. Overexpression of CmFBN1 in transgenic Arabidopsis (Arabidopsis thaliana) containing ORHis that genetically mimics CmOr significantly enhances carotenoid accumulation, demonstrating its involvement in CmOR-induced carotenoid accumulation. Both in vitro and in vivo evidence showed that CmOR physically interacts with CmFBN1. Such an interaction occurs in plastoglobules and results in promoting CmFBN1 accumulation. CmOR greatly stabilizes CmFBN1, which stimulates plastoglobule proliferation and subsequently carotenoid accumulation in chromoplasts. Our findings show that CmOR directly regulates CmFBN1 protein levels and suggest a fundamental role of CmFBN1 in facilitating plastoglobule proliferation for carotenoid sequestration. This study also reveals an important genetic tool to further enhance OR-induced carotenoid accumulation in chromoplasts in crops.
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Affiliation(s)
- Xuesong Zhou
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Horticulture Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Tianhu Sun
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Lauren Owens
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
| | - Yong Yang
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
| | - Tara Fish
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
| | - Emalee Wrightstone
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Andy Lui
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Hui Yuan
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Noam Chayut
- Department of Vegetable Research, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
- John Innes Centre, Norwich Research Park, Norwich, UK
| | - Joseph Burger
- Department of Vegetable Research, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
| | - Yaakov Tadmor
- Department of Vegetable Research, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
| | - Theodore Thannhauser
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
| | - Wangzhen Guo
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
| | - Lailiang Cheng
- Horticulture Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Li Li
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, NY 14853, USA
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
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Sun T, Wang P, Rao S, Zhou X, Wrightstone E, Lu S, Yuan H, Yang Y, Fish T, Thannhauser T, Liu J, Mazourek M, Grimm B, Li L. Co-chaperoning of Chlorophyll and Carotenoid Biosynthesis by ORANGE Family Proteins in Plants. Mol Plant 2023:S1674-2052(23)00140-5. [PMID: 37202926 DOI: 10.1016/j.molp.2023.05.006] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 04/14/2023] [Accepted: 05/15/2023] [Indexed: 05/20/2023]
Abstract
Chlorophylls and carotenoids are essential photosynthetic pigments. Plants spatiotemporally coordinate the needs of chlorophylls and carotenoids for optimal photosynthesis and fitness in response to diverse environmental and developmental cues. However, how the biosynthesis pathways of these two pigments are coordinated, particularly at posttranslational level to allow rapid control, remains largely unknown. Here, we report that the highly conserved ORANGE (OR) family proteins coordinate both pathways via posttranslationally mediating the first committed enzyme in each pathway. We demonstrate that OR family proteins physically interact with magnesium chelatase subunit I (CHLI) in addition to phytoene synthase (PSY) and concurrently stabilize CHLI and PSY enzymes. We show that loss of OR genes hinders both chlorophyll and carotenoid biosynthesis, limits light-harvesting complex assembly, and impairs thylakoid grana stacking in chloroplasts. Overexpression of OR safeguards photosynthetic pigment biosynthesis and enhances thermotolerance in both Arabidopsis and tomato plants. Our findings establish a novel mechanism by which plants coordinate chlorophyll and carotenoid biosynthesis and provide a potential genetic target to generate climate-resilient crops.
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Affiliation(s)
- Tianhu Sun
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, New York 14853, USA; Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Peng Wang
- Department of Plant Physiology, Institute of Biology, Humboldt-Universität zu Berlin, 10115 Berlin, Germany; School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, China
| | - Sombir Rao
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, New York 14853, USA; Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Xuesong Zhou
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, New York 14853, USA; Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Emalee Wrightstone
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, New York 14853, USA; Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Shan Lu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Hui Yuan
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, New York 14853, USA; Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Yong Yang
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, New York 14853, USA
| | - Tara Fish
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, New York 14853, USA
| | - Theodore Thannhauser
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, New York 14853, USA
| | - Jiping Liu
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, New York 14853, USA; Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Michael Mazourek
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Bernhard Grimm
- Department of Plant Physiology, Institute of Biology, Humboldt-Universität zu Berlin, 10115 Berlin, Germany
| | - Li Li
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, Cornell University, Ithaca, New York 14853, USA; Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA.
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Roy BG, DeBlasio S, Yang Y, Thannhauser T, Heck M, Fuchs M. Profiling Plant Proteome and Transcriptome Changes during Grapevine Fanleaf Virus Infection. J Proteome Res 2023. [PMID: 37099450 DOI: 10.1021/acs.jproteome.3c00069] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
Viruses can elicit varying types and severities of symptoms during plant host infection. We investigated changes in the proteome and transcriptome of Nicotiana benthamiana plants infected by grapevine fanleaf virus (GFLV) with an emphasis on vein clearing symptom development. Comparative, time-course liquid chromatography tandem mass spectrometry and 3' ribonucleic acid sequencing analyses of plants infected by two wildtype GFLV strains, one symptomatic and one asymptomatic, and their asymptomatic mutant strains carrying a single amino acid change in the RNA-dependent RNA polymerase (RdRP) were conducted to identify host biochemical pathways involved in viral symptom development. During peak vein clearing symptom display at 7 days post-inoculation (dpi), protein and gene ontologies related to immune response, gene regulation, and secondary metabolite production were overrepresented when contrasting wildtype GFLV strain GHu and mutant GHu-1EK802GPol. Prior to the onset of symptom development at 4 dpi and when symptoms faded away at 12 dpi, protein and gene ontologies related to chitinase activity, hypersensitive response, and transcriptional regulation were identified. This systems biology approach highlighted how a single amino acid of a plant viral RdRP mediates changes to the host proteome (∼1%) and transcriptome (∼8.5%) related to transient vein clearing symptoms and the network of pathways involved in the virus-host arms race.
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Affiliation(s)
- Brandon G Roy
- Plant Pathology and Plant-Microbe Biology Section, Cornell AgriTech at the New York State Agricultural Experiment Station, Cornell University, Geneva, New York 14456, United States
| | - Stacy DeBlasio
- Emerging Pests and Pathogens Research Unit, United States Department of Agriculture─Agricultural Research Service, Ithaca, New York 14853, United States
| | - Yong Yang
- Emerging Pests and Pathogens Research Unit, United States Department of Agriculture─Agricultural Research Service, Ithaca, New York 14853, United States
| | - Theodore Thannhauser
- Emerging Pests and Pathogens Research Unit, United States Department of Agriculture─Agricultural Research Service, Ithaca, New York 14853, United States
| | - Michelle Heck
- Emerging Pests and Pathogens Research Unit, United States Department of Agriculture─Agricultural Research Service, Ithaca, New York 14853, United States
- Plant Pathology and Plant Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, United States
| | - Marc Fuchs
- Plant Pathology and Plant-Microbe Biology Section, Cornell AgriTech at the New York State Agricultural Experiment Station, Cornell University, Geneva, New York 14456, United States
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Casajús V, Howe K, Fish T, Civello P, Thannhauser T, Li L, Gómez Lobato M, Martínez G. Evidence of glucosinolates translocation from inflorescences to stems during postharvest storage of broccoli. Plant Physiol Biochem 2023; 195:322-329. [PMID: 36669347 DOI: 10.1016/j.plaphy.2023.01.012] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 12/05/2022] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Broccoli is a vegetable appreciated by consumers for its nutritional properties, particularly for its high glucosinolate (GLS) content. However, broccoli shows a high rate of senescence during postharvest and the GLS content in inflorescences decreases sharply. Usually, postharvest studies on broccoli focus on inflorescences, ignoring the other tissues harvested such as the stems and main stalk. In this work, GLS metabolism in whole heads of broccoli (including inflorescences, small stems and stalk) was analysed during postharvest senescence. The content of GLS content, expression of GLS metabolic genes, and expression of GLS transport-associated genes were measured in the three parts of harvested broccoli. A marked decrease in the content of all GLSs was detected in inflorescences, but an increase in the stems and stalk. Also, decreased expressions of GLS biosynthesis and degradation genes were detected in all tissues analysed. On the other hand, an increase in the expression of one of the genes involved in GLS transport was observed. These results suggest that GLSs would be transported from inflorescences to stems during postharvest senescence. From a commercial point of view, broccoli stems are usually discarded and not used as food. However, the accumulation of GLSs in the stems is an important factor to consider when contemplating potential commercial use of this part of the plant.
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Affiliation(s)
- Victoria Casajús
- Instituto de Fisiología Vegetal (INFIVE) UNLP-CONICET, 113 and 61, 1900, La Plata, Argentina
| | - Kevin Howe
- Robert W. Holley Center for Agriculture and Health, USDA-Agricultural Research Service, Cornell University, Ithaca, NY, 14853, USA
| | - Tara Fish
- Robert W. Holley Center for Agriculture and Health, USDA-Agricultural Research Service, Cornell University, Ithaca, NY, 14853, USA
| | - Pedro Civello
- Instituto de Fisiología Vegetal (INFIVE) UNLP-CONICET, 113 and 61, 1900, La Plata, Argentina; Facultad de Ciencias Exactas. Universidad Nacional de La Plata (UNLP), La Plata, Argentina
| | - Theodore Thannhauser
- Robert W. Holley Center for Agriculture and Health, USDA-Agricultural Research Service, Cornell University, Ithaca, NY, 14853, USA
| | - Li Li
- Robert W. Holley Center for Agriculture and Health, USDA-Agricultural Research Service, Cornell University, Ithaca, NY, 14853, USA
| | - María Gómez Lobato
- Instituto de Fisiología Vegetal (INFIVE) UNLP-CONICET, 113 and 61, 1900, La Plata, Argentina
| | - Gustavo Martínez
- Instituto de Fisiología Vegetal (INFIVE) UNLP-CONICET, 113 and 61, 1900, La Plata, Argentina; Facultad de Ciencias Exactas. Universidad Nacional de La Plata (UNLP), La Plata, Argentina.
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Casajús V, Civello P, Martínez G, Howe K, Fish T, Yang Y, Thannhauser T, Li L, Gómez Lobato M. Effect of continuous white light illumination on glucosinolate metabolism during postharvest storage of broccoli. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111302] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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7
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Fu Q, Liu Z, Bhawal R, Anderson ET, Sherwood RW, Yang Y, Thannhauser T, Schroyen M, Tang X, Zhang H, Zhang S. Comparison of MS 2, synchronous precursor selection MS 3, and real-time search MS 3 methodologies for lung proteomes of hydrogen sulfide treated swine. Anal Bioanal Chem 2020; 413:419-429. [PMID: 33099676 DOI: 10.1007/s00216-020-03009-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 10/13/2020] [Indexed: 01/02/2023]
Abstract
Tandem mass tags (TMTs) have increasingly become an attractive technique for global proteomics. However, its effectiveness for multiplexed quantitation by traditional tandem mass spectrometry (MS2) suffers from ratio distortion. Synchronous precursor selection (SPS) MS3 has been widely accepted for improved quantitation accuracy, but concurrently decreased proteome coverage. Recently, a Real-Time Search algorithm has been integrated with the SPS MS3 pipeline (RTS MS3) to provide accurate quantitation and improved depth of coverage. In this mechanistic study of the impact of exposure to hydrogen sulfide (H2S) on the respiration of swine, we used TMT-based comparative proteomics of lung tissues from control and H2S-treated subjects as a test case to evaluate traditional MS2, SPS MS3, and RTS MS3 acquisition methods on both the Orbitrap Fusion and Orbitrap Eclipse platforms. Comparison of the results obtained by the MS2 with those of SPS MS3 and RTS MS3 methods suggests that the MS3-driven quantitative strategies provided a more accurate global-scale quantitation; however, only RTS MS3 provided proteomic coverage that rivaled that of traditional MS2 analysis. RTS MS3 not only yields more productive MS3 spectra than SPS MS3 but also appears to focus the analysis more effectively on unique peptides. Furthermore, pathway enrichment analyses of the H2S-altered proteins demonstrated that an additional apoptosis pathway was discovered exclusively by RTS MS3. This finding was verified by RT-qPCR, western blotting, and TUNEL staining experiments. We conclude that RTS MS3 workflow enables simultaneous improvement of quantitative accuracy and proteome coverage over alternative approaches (MS2 and SPS MS3). Graphical abstract.
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Affiliation(s)
- Qin Fu
- Proteomics and Metabolomics Facility, Institute of Biotechnology, Cornell University, 526 Campus Road, Ithaca, NY, 14853, USA
| | - Zhen Liu
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, 2 West Yuanmingyuan Road, Beijing, 100193, China.,Precision Livestock and Nutrition Unit, Gembloux Agro-Bio Tech, Teaching and Research Centre, University of Liège, Passage des Déportés 2, 5030, Gembloux, Belgium
| | - Ruchika Bhawal
- Proteomics and Metabolomics Facility, Institute of Biotechnology, Cornell University, 526 Campus Road, Ithaca, NY, 14853, USA
| | - Elizabeth T Anderson
- Proteomics and Metabolomics Facility, Institute of Biotechnology, Cornell University, 526 Campus Road, Ithaca, NY, 14853, USA
| | - Robert W Sherwood
- Proteomics and Metabolomics Facility, Institute of Biotechnology, Cornell University, 526 Campus Road, Ithaca, NY, 14853, USA
| | - Yong Yang
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, 538 Tower Road, Ithaca, NY, 14853, USA
| | - Theodore Thannhauser
- Robert W. Holley Center for Agriculture and Health, USDA-ARS, 538 Tower Road, Ithaca, NY, 14853, USA
| | - Martine Schroyen
- Precision Livestock and Nutrition Unit, Gembloux Agro-Bio Tech, Teaching and Research Centre, University of Liège, Passage des Déportés 2, 5030, Gembloux, Belgium
| | - Xiangfang Tang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, 2 West Yuanmingyuan Road, Beijing, 100193, China.
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, 2 West Yuanmingyuan Road, Beijing, 100193, China
| | - Sheng Zhang
- Proteomics and Metabolomics Facility, Institute of Biotechnology, Cornell University, 526 Campus Road, Ithaca, NY, 14853, USA.
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Beverly AB, Zhu L, Fish TL, Thannhauser T, Rutzke MA, Miller DD. Green tea ingestion by rats does not affect iron absorption but does alter the composition of the saliva proteome. J Food Sci 2012; 77:H96-H104. [PMID: 22497429 DOI: 10.1111/j.1750-3841.2012.02658.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We tested the hypothesis that rats adapt to the iron absorption inhibitory effects of tea by modifying the expression of salivary proteins. Thirty-six weanling rats were allocated into 6 groups. Two control groups were fed a semipurified diet containing 20 mg Fe(2+)/kg diet. Two groups were fed spray dried green tea infusion mixed into the diet (28.6 g tea/kg diet) and 2 groups were fed the control diet with a twice daily gavage of a tea solution (0.25 g tea/mL). Saliva samples were collected in 3 groups (control, gavage, and oral) on day 8 (acute) and in the remaining groups on day 31 (chronic). Iron absorption was assessed using a (58)Fe(3+) tracer administered on day 1 (acute) and day 24 (chronic). 2D gel electrophoresis and mass spectrometry were used to assess the composition of the saliva proteome. There was no significant difference in iron absorption between the 3 groups on either day 1 or day 24. Salivary proline-rich proteins and submandibular gland secretory protein increased to a greater extent in the oral group than in the gavage group, when compared to control, within the same exposure time period. Amylase, chitinase, deoxyribonuclease, cysteine-rich secretory protein 1, and parotid secretory protein all decreased to a greater extent in the oral tea group, compared to the control, within the same exposure time period. Our results show that green tea did not decrease iron absorption in rats but it did have a marked effect on the saliva proteome when given orally.
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Xiang B, Yang X, Thannhauser T. Protein N- and C-termini identification using mass spectrometry and isotopic labeling. Rapid Commun Mass Spectrom 2009; 23:2102-2106. [PMID: 19489021 DOI: 10.1002/rcm.4096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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10
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Grills GS, Detwiler M, Thannhauser T, Hunter T, Adams PS, Bobin SA. Summary of the Northeast Regional Life Science Core Directors (NERLSCD) 2006 meeting. J Biomol Tech 2007; 18:101-3. [PMID: 17496221 PMCID: PMC2062540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Affiliation(s)
- G S Grills
- Cornell University, 139 Biotechnology Building, Ithaca, NY 14853-2703, USA.
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Duff HJ, Stemler M, Thannhauser T, Laganiere S, Rude E, Lester W. Proarrhythmia of a class Ic drug: suppression by combination with a drug prolonging repolarization in the dog late after infarction. J Pharmacol Exp Ther 1995; 274:508-15. [PMID: 7616438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Encainide treatment in patients after myocardial infarction is associated with increased risk of sudden cardiac death. This may relate to drug-induced changes in the electrophysiologic milieu, thus predisposing the patient to sustained ventricular tachyarrhythmias. The goals of this study were to first develop a model of class Ic-induced ventricular tachycardia (VT) and then to design treatments to oppose this prodysrhythmic activity. Dogs with time-dependent loss of inducible sustained VT in the antiarrhythmic drug-free state were studied late after infarction. These dogs received a series of three loading and maintenance infusions of O-demethyl encainide (ODME) to achieve concentrations of 60 +/- 31, 136 +/- 46 and 339 +/- 171 ng/ml. Drug maintenance continued until programmed stimulation induced monomorphic sustained VT. When ODME infusion allowed this induction, barium chloride infusions were added. ODME treatment allowed induction of monomorphic sustained VT in 9 of 10 dogs studied. Prodysrhythmic monomorphic VT was significantly related (P < .01) to prolongation of conduction velocity in the peri-infarct zone. ODME modestly increased ventricular refractoriness at some but not all peri-infarct sites. Infusion of barium chloride in the above nine dogs caused their hearts to return to the noninducible state. Prolongation of refractoriness in the peri-infarct zone was correlated to this suppression of prodysrhythmia. Prolongation of conduction velocity in the absence of substantial prolongation of refractoriness may underlie ODME-facilitated induction of monomorphic VT. Prolongation of refractoriness in the peri-infarct zone by combination treatment with barium chloride reversed prodysrhythmic VT in all of the dogs.
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Affiliation(s)
- H J Duff
- Department of Medicine, University of Calgary, Canada
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Keith J, Stockwell S, Ball D, Remillard K, Kaplan D, Thannhauser T, Sherwood R. Comparative analysis of macromolecules in mollusc shells. Comp Biochem Physiol B 1993; 105:487-96. [PMID: 8365104 DOI: 10.1016/0305-0491(93)90078-j] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
1. Proteins and polysaccharides were isolated from the shells of molluscs; blue mussel, Mytilus edulis, chambered nautilus, Nautilus pompilius, and red abalone, Haliotus rufescens. 2. N-acetyl glucosamine was detected in nautilus but not mussel or abalone. 3. Amino acid analysis of protein fractions was completed for the three molluscs and purified proteins from the mussel were partially sequenced. 4. Calcium binding studies were carried out with some of the protein fractions.
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Affiliation(s)
- J Keith
- Biotechnology Division, U.S. Army Natick Research, Development and Engineering Center, MA 01760-5020
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