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Schürfeld R, Baratashvili E, Würfel M, Blüher M, Stumvoll M, Tönjes A, Ebert T. Circulating acyl-CoA-binding protein/diazepam-binding inhibitor in gestational diabetes mellitus. Reprod Biol Endocrinol 2023; 21:96. [PMID: 37872629 PMCID: PMC10591366 DOI: 10.1186/s12958-023-01152-z] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 10/13/2023] [Indexed: 10/25/2023] Open
Abstract
BACKGROUND Acyl-CoA-binding protein (ACBP)/diazepam-binding inhibitor has recently been characterized as an endocrine factor affecting energy balance and lipid metabolism. However, regulation of ACBP in women with gestational diabetes mellitus (GDM) during pregnancy, as well as postpartum, has not been investigated, so far. METHODS ACBP was quantified in 74 women with GDM and 74 healthy, gestational age-matched, pregnant controls using an enzyme-linked immunosorbent assay. Furthermore, ACBP was quantified post-partum in 82 women (i.e. 41 women with previous GDM vs. 41 previous control women). ACBP was related to measures of obesity, hypertension, glucose and lipid metabolism, renal function, and inflammation during pregnancy and postpartum. RESULTS During pregnancy, median [interquartile range] ACBP levels were not significantly different in women with GDM (40.9 [40.0] µg/l) compared to healthy, pregnant controls (29.1 [32.3] µg/l) (p = 0.215). ACBP serum concentrations increased from 30.3 [40.5] µg/l during pregnancy to 59.7 [33.2] µg/l after pregnancy in the entire cohort (p < 0.001). This observed elevation was consistent across both subgroups of women, those with prior GDM and those without. Multivariate analysis revealed that homeostasis model assessment of beta cell function (HOMA2-B) and creatinine positively and independently correlated with serum ACBP after pregnancy, while multivariate analysis during pregnancy showed no significant correlations. CONCLUSIONS Circulating ACBP is not a marker of GDM status, but ACBP is decreased during pregnancy, irrespective of GDM status. Furthermore, ACBP is related to beta cell function and renal markers in women after pregnancy.
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Affiliation(s)
- Robin Schürfeld
- Medical Department III - Endocrinology, University Hospital Leipzig, 04103, Nephrology, Rheumatology, Leipzig, Germany.
| | - Ekaterine Baratashvili
- Medical Department III - Endocrinology, University Hospital Leipzig, 04103, Nephrology, Rheumatology, Leipzig, Germany
| | - Marleen Würfel
- Medical Department III - Endocrinology, University Hospital Leipzig, 04103, Nephrology, Rheumatology, Leipzig, Germany
| | - Matthias Blüher
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG, Helmholtz Zentrum München at the University of Leipzig and University Hospital, Leipzig, Germany
| | - Michael Stumvoll
- Medical Department III - Endocrinology, University Hospital Leipzig, 04103, Nephrology, Rheumatology, Leipzig, Germany
| | - Anke Tönjes
- Medical Department III - Endocrinology, University Hospital Leipzig, 04103, Nephrology, Rheumatology, Leipzig, Germany
| | - Thomas Ebert
- Medical Department III - Endocrinology, University Hospital Leipzig, 04103, Nephrology, Rheumatology, Leipzig, Germany
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Hu P, Ren Y, Xu J, Luo W, Wang M, Song P, Guan Y, Hu H, Li C. Identification of acyl-CoA-binding protein gene in Triticeae species reveals that TaACBP4A-1 and TaACBP4A-2 positively regulate powdery mildew resistance in wheat. Int J Biol Macromol 2023; 246:125526. [PMID: 37379955 DOI: 10.1016/j.ijbiomac.2023.125526] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/16/2023] [Accepted: 06/21/2023] [Indexed: 06/30/2023]
Abstract
Plant acyl-CoA-binding proteins (ACBPs), which contain the conserved ACB domain, participate in multiple biological processes, however, there are few reports on wheat ACBPs. In this study, the ACBP genes from nine different species were identified comprehensively. The expression patterns of TaACBP genes in multiple tissues and under various biotic stresses were determined by qRT-PCR. The function of selected TaACBP genes was studied by virus-induced gene silencing. A total of 67 ACBPs were identified from five monocotyledonous and four dicotyledonous species and divided into four classes. Tandem duplication analysis of the ACBPs suggested that tandem duplication events occurred in Triticum dicoccoides, but there was no tandem duplication event in wheat ACBP genes. Evolutionary analysis suggested that the TdACBPs may have experienced gene introgression during tetraploid evolution, while TaACBP gene loss events occurred during hexaploid wheat evolution. The expression pattern showed that all the TaACBP genes were expressed, and most of them were responsive to induction by Blumeria graminis f. sp. tritici or Fusarium graminearum. Silencing of TaACBP4A-1 and TaACBP4A-2 increased powdery mildew susceptibility in the common wheat BainongAK58. Furthermore, TaACBP4A-1, which belonged to class III, physically interacted with autophagy-related ubiquitin-like protein TaATG8g in yeast cells. This study provided a valuable reference for further investigations into the functional and molecular mechanisms of the ACBP gene family.
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Affiliation(s)
- Ping Hu
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China.
| | - Yueming Ren
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China
| | - Jun Xu
- College of Landscape Architecture and Horticulture, Henan Institute of Science and Technology, Xinxiang, China
| | - Wanglong Luo
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China
| | - Mengfei Wang
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China
| | - Puwen Song
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China.
| | - Yuanyuan Guan
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China
| | - Haiyan Hu
- College of Life Science and Technology, Henan Engineering Research Center of Crop Genome Editing/Henan International Joint Laboratory of Plant Genetic Improvement and Soil Remediation, Henan Institute of Science and Technology, Xinxiang, China.
| | - Chengwei Li
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China.
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Schürfeld R, Sandner B, Hoffmann A, Klöting N, Baratashvili E, Nowicki M, Paeschke S, Kosacka J, Kralisch S, Bachmann A, Frille A, Dietel A, Stolzenburg JU, Blüher M, Zhang MZ, Harris RC, Isermann B, Stumvoll M, Tönjes A, Ebert T. Renal function is a major predictor of circulating acyl-CoA-binding protein/diazepam-binding inhibitor. Front Endocrinol (Lausanne) 2023; 14:1152444. [PMID: 37288304 PMCID: PMC10242139 DOI: 10.3389/fendo.2023.1152444] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 05/09/2023] [Indexed: 06/09/2023] Open
Abstract
Objective Acyl-CoA-binding protein (ACBP)/diazepam-binding inhibitor has lately been described as an endocrine factor affecting food intake and lipid metabolism. ACBP is dysregulated in catabolic/malnutrition states like sepsis or systemic inflammation. However, regulation of ACBP has not been investigated in conditions with impaired kidney function, so far. Design/methods Serum ACBP concentrations were investigated by enzyme-linked immunosorbent assay i) in a cohort of 60 individuals with kidney failure (KF) on chronic haemodialysis and compared to 60 individuals with a preserved kidney function; and ii) in a human model of acute kidney dysfunction (AKD). In addition, mACBP mRNA expression was assessed in two CKD mouse models and in two distinct groups of non-CKD mice. Further, mRNA expression of mACBP was measured in vitro in isolated, differentiated mouse adipocytes - brown and white - after exposure to the uremic agent indoxyl sulfate. Results Median [interquartile range] serum ACBP was almost 20-fold increased in KF (514.0 [339.3] µg/l) compared to subjects without KF (26.1 [39.1] µg/l) (p<0.001). eGFR was the most important, inverse predictor of circulating ACBP in multivariate analysis (standardized β=-0.839; p<0.001). Furthermore, AKD increased ACBP concentrations almost 3-fold (p<0.001). Increased ACBP levels were not caused by augmented mACBP mRNA expression in different tissues of CKD mice in vivo or in indoxyl sulfate-treated adipocytes in vitro. Conclusions Circulating ACBP inversely associates with renal function, most likely through renal retention of the cytokine. Future studies need to investigate ACBP physiology in malnutrition-related disease states, such as CKD, and to adjust for markers of renal function.
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Affiliation(s)
- Robin Schürfeld
- Medical Department III – Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
| | - Benjamin Sandner
- Medical Department III – Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
| | - Annett Hoffmann
- Medical Department III – Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Würzburg, Würzburg, Germany
| | - Nora Klöting
- Helmholtz Institute for Metabolic, Obesity and Vascular Research of the Helmholtz Zentrum München at the University of Leipzig and University Hospital, Leipzig, Germany
| | - Ekaterine Baratashvili
- Medical Department III – Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
- Department of Cardiology, Angiology and Internal Intensive-Care Medicine, Klinikum St. Georg, Leipzig, Germany
| | - Marcin Nowicki
- Institute of Anatomy, University of Leipzig, Leipzig, Germany
| | - Sabine Paeschke
- Institute of Anatomy, University of Leipzig, Leipzig, Germany
| | - Joanna Kosacka
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University of Leipzig Medical Center, Leipzig, Germany
| | - Susan Kralisch
- Medical Department III – Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
| | - Anette Bachmann
- Medical Department III – Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
| | - Armin Frille
- Department of Respiratory Medicine, University Hospital Leipzig, University of Leipzig, Leipzig, Germany
| | - Anja Dietel
- Department of Urology, University of Leipzig, Leipzig, Germany
| | | | - Matthias Blüher
- Medical Department III – Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
- Helmholtz Institute for Metabolic, Obesity and Vascular Research of the Helmholtz Zentrum München at the University of Leipzig and University Hospital, Leipzig, Germany
| | - Ming-Zhi Zhang
- Division of Nephrology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, United States
- Department of Medicine, Nashville Veterans Affairs Hospital, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Raymond C. Harris
- Division of Nephrology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, United States
- Department of Medicine, Nashville Veterans Affairs Hospital, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry, and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany
| | - Michael Stumvoll
- Medical Department III – Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
| | - Anke Tönjes
- Medical Department III – Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
| | - Thomas Ebert
- Medical Department III – Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
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Jiang X, Xu L, Gao Y, He M, Bu Q, Meng W. Phylogeny and subcellular localization analyses reveal distinctions in monocot and eudicot class IV acyl-CoA-binding proteins. Planta 2021; 254:71. [PMID: 34505938 DOI: 10.1007/s00425-021-03721-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 07/09/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
Plant class IV ACBPs diverged with the split of monocots and eudicots. Difference in the subcellular localization supported the functional variation of plant class IV ACBP. Acyl-CoA-binding proteins (ACBPs) are divided into class I-IV in plants. Class IV ACBPs are kelch motif containing proteins that are specific to plants. The currently known subcellular localizations of plant class IV ACBPs are either in the cytosol (Arabidopsis) or in the peroxisomes (rice). However, it is not clear whether peroxisomal localization of class IV ACBP is a shared character that distinguishes eudicots and monocots. Here, the phylogeny of class IV ACBPs from 73 plant species and subcellular localization of class IV ACBPs from six monocots and eudicots were conducted. Phylogenetic analysis of 112 orthologues revealed that monocot class IV ACBPs were basal to the monophyletic clade formed by eudicots and basal angiosperm. Transient expression of GFP fusions in onion epidermal cells demonstrated that monocot maize (Zea mays), wheat (Triticum aestivum), and sorghum (Sorghum bicolor) and eudicot poplar (Populus trichocarpa) all contained at least one peroxisomal localized class IV ACBP, while orthologues from cucumber (Cucumis sativus L.) and soybean (Glycine max) were all cytosolic. Combining the location of Arabidopsis and rice class IV ACBPs, it indicates that maintaining at least one peroxisomal class IV ACBP could be a shared feature within the tested monocots, while cytosolic class IV ACBPs would be preferred in the tested eudicots. Furthermore, the interaction between OsACBP6 and peroxisomal ATP-binding cassette (ABC) transporter provided clues for the functional mechanism of OsACBP6.
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Affiliation(s)
- Xue Jiang
- College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Lijian Xu
- College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China
| | - Ying Gao
- College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Mingliang He
- Northeast Institute of Geography and Agroecology, Key Laboratory of Soybean Molecular Design Breeding, Chinese Academy of Sciences, Harbin, 150081, China
| | - Qingyun Bu
- Northeast Institute of Geography and Agroecology, Key Laboratory of Soybean Molecular Design Breeding, Chinese Academy of Sciences, Harbin, 150081, China
| | - Wei Meng
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China.
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Meng W, Xu L, Du ZY, Wang F, Zhang R, Song X, Lam SM, Shui G, Li Y, Chye ML. RICE ACYL-COA-BINDING PROTEIN6 Affects Acyl-CoA Homeostasis and Growth in Rice. Rice (N Y) 2020; 13:75. [PMID: 33159253 PMCID: PMC7647982 DOI: 10.1186/s12284-020-00435-y] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 10/21/2020] [Indexed: 05/05/2023]
Abstract
BACKGROUNDS Acyl-coenzyme A (CoA) esters are important intermediates in lipid metabolism with regulatory properties. Acyl-CoA-binding proteins bind and transport acyl-CoAs to fulfill these functions. RICE ACYL-COA-BINDING PROTEIN6 (OsACBP6) is currently the only one peroxisome-localized plant ACBP that has been proposed to be involved in β-oxidation in transgenic Arabidopsis. The role of the peroxisomal ACBP (OsACBP6) in rice (Oryza sativa) was investigated. RESULTS Here, we report on the function of OsACBP6 in rice. The osacbp6 mutant showed diminished growth with reduction in root meristem activity and leaf growth. Acyl-CoA profiling and lipidomic analysis revealed an increase in acyl-CoA content and a slight triacylglycerol accumulation caused by the loss of OsACBP6. Comparative transcriptomic analysis discerned the biological processes arising from the loss of OsACBP6. Reduced response to oxidative stress was represented by a decline in gene expression of a group of peroxidases and peroxidase activities. An elevation in hydrogen peroxide was observed in both roots and shoots/leaves of osacbp6. Taken together, loss of OsACBP6 not only resulted in a disruption of the acyl-CoA homeostasis but also peroxidase-dependent reactive oxygen species (ROS) homeostasis. In contrast, osacbp6-complemented transgenic rice displayed similar phenotype to the wild type rice, supporting a role for OsACBP6 in the maintenance of the acyl-CoA pool and ROS homeostasis. Furthermore, quantification of plant hormones supported the findings observed in the transcriptome and an increase in jasmonic acid level occurred in osacbp6. CONCLUSIONS In summary, OsACBP6 appears to be required for the efficient utilization of acyl-CoAs. Disruption of OsACBP6 compromises growth and led to provoked defense response, suggesting a correlation of enhanced acyl-CoAs content with defense responses.
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Affiliation(s)
- Wei Meng
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, 150040, China.
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - Lijian Xu
- College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China
| | - Zhi-Yan Du
- Department of Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI, 96822, USA
| | - Fang Wang
- College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Rui Zhang
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Xingshun Song
- College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Sin Man Lam
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- Lipidall Technologies Company Limited, Changzhou, 213000, China
| | - Guanghou Shui
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Yuhua Li
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, 150040, China
| | - Mee-Len Chye
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong
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Aznar-Moreno JA, Venegas-Calerón M, Du ZY, Garcés R, Tanner JA, Chye ML, Martínez-Force E, Salas JJ. Characterization and function of a sunflower (Helianthus annuus L.) Class II acyl-CoA-binding protein. Plant Sci 2020; 300:110630. [PMID: 33180709 DOI: 10.1016/j.plantsci.2020.110630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/22/2020] [Revised: 07/29/2020] [Accepted: 08/03/2020] [Indexed: 05/13/2023]
Abstract
Acyl-CoA-binding proteins (ACBP) bind to long-chain acyl-CoA esters and phospholipids, enhancing the activity of different acyltransferases in animals and plants. Nevertheless, the role of these proteins in the synthesis of triacylglycerols (TAGs) remains unclear. Here, we cloned a cDNA encoding HaACBP1, a Class II ACBP from sunflower (Helianthus annuus), one of the world's most important oilseed crop plants. Transcriptome analysis of this gene revealed strong expression in developing seeds from 16 to 30 days after flowering. The recombinant protein (rHaACBP1) was expressed in Escherichia coli and purified to be studied by in vitro isothermal titration calorimetry and for phospholipid binding. Its high affinity for saturated palmitoyl-CoA (16:0-CoA; KD 0.11 μM) and stearoyl-CoA (18:0-CoA; KD 0.13 μM) esters suggests that rHaACBP1 could act in acyl-CoA transfer pathways that involve saturated acyl derivatives. Furthermore, rHaACBP1 also binds to both oleoyl-CoA (18:1-CoA; KD 6.4 μM) and linoleoyl-CoA (18:2-CoA; KD 21.4 μM) esters, the main acyl-CoA substrates used to synthesise the TAGs that accumulate in sunflower seeds. Interestingly, rHaACBP1 also appears to bind to different species of phosphatidylcholines (dioleoyl-PC and dilinoleoyl-PC), glycerolipids that are also involved in TAG synthesis, and while it interacts with dioleoyl-PA, this is less prominent than its binding to the PC derivative. Expression of rHaACBP in yeast alters its fatty acid composition, as well as the composition and size of the host acyl-CoA pool. These results suggest that HaACBP1 may potentially fulfil a role in the transport and trafficking of acyl-CoAs during sunflower seed development.
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Affiliation(s)
- Jose A Aznar-Moreno
- Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Pozuelo de Alarcón, 28223, Madrid, Spain
| | - Mónica Venegas-Calerón
- Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Ctra. de Utrera Km 1, 41013, Sevilla, Spain
| | - Zhi-Yan Du
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Rafael Garcés
- Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Ctra. de Utrera Km 1, 41013, Sevilla, Spain
| | - Julian A Tanner
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Mee-Len Chye
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Enrique Martínez-Force
- Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Ctra. de Utrera Km 1, 41013, Sevilla, Spain
| | - Joaquín J Salas
- Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Ctra. de Utrera Km 1, 41013, Sevilla, Spain.
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Qiu S, Zeng B. Advances in Understanding the Acyl-CoA-Binding Protein in Plants, Mammals, Yeast, and Filamentous Fungi. J Fungi (Basel) 2020; 6:E34. [PMID: 32164164 PMCID: PMC7151191 DOI: 10.3390/jof6010034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/06/2020] [Accepted: 03/07/2020] [Indexed: 12/31/2022] Open
Abstract
Acyl-CoA-binding protein (ACBP) is an important protein with a size of about 10 kDa. It has a high binding affinity for C12-C22 acyl-CoA esters and participates in lipid metabolism. ACBP and its family of proteins have been found in all eukaryotes and some prokaryotes. Studies have described the function and structure of ACBP family proteins in mammals (such as humans and mice), plants (such as Oryza sativa, Arabidopsis thaliana, and Hevea brasiliensis) and yeast. However, little information on the structure and function of the proteins in filamentous fungi has been reported. This article concentrates on recent advances in the research of the ACBP family proteins in plants and mammals, especially in yeast, filamentous fungi (such as Monascus ruber and Aspergillus oryzae), and fungal pathogens (Aspergillus flavus, Cryptococcus neoformans). Furthermore, we discuss some problems in the field, summarize the binding characteristics of the ACBP family proteins in filamentous fungi and yeast, and consider the future of ACBP development.
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Affiliation(s)
| | - Bin Zeng
- JiangXi Province Key Laboratory of Bioprocess Engineering, College of Life Sciences, Jiangxi Science & Technology Normal University, Nanchang 330013, China;
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8
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Ye ZW, Chen QF, Chye ML. Arabidopsis thaliana Acyl-CoA-binding protein ACBP6 interacts with plasmodesmata-located protein PDLP8. Plant Signal Behav 2017; 12:e1359365. [PMID: 28786767 PMCID: PMC5616145 DOI: 10.1080/15592324.2017.1359365] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 06/14/2017] [Revised: 07/19/2017] [Accepted: 07/20/2017] [Indexed: 05/22/2023]
Abstract
In Arabidopsis thaliana, six acyl-CoA-binding proteins (ACBPs), designated as AtACBP1 to AtACBP6, have been identified to function in various events related to plant stress and development. The 10-kDa AtACBP6 is the smallest in this protein family, and recombinant AtACBP6 interacts with lipids in vitro by binding to acyl-CoA esters and phosphatidylcholine. Using anti-AtACBP6 antibodies in immunoelectron microscopy, we have localized AtACBP6 in the Arabidopsis phloem. The detection of immunogold grains in the plasmodesmata suggested that AtACBP6 could move from the companion cells to the sieve elements via the plasmodesmata. As AtACBP6 has been identified in a membrane-based interactome analysis to be a potential protein partner of Plasmodesmata-Localized Protein, PDLP8, AtACBP6-PDLP8 interaction was investigated herein utilizing isothermal titration calorimetry, as well as pull-down and bimolecular fluorescence complementation assays (BiFC). Notably, BiFC data revealed that AtACBP6-PDLP8 interaction occurred at the plasma membrane, which was unexpected as AtACBP6 has been previously identified in the cytosol. AtACBP6 expression was generally higher than PDLP8 in β-glucuronidase (GUS) assays on transgenic Arabidopsis transformed with AtACBP6 or PDLP8 promoter-driven GUS, consistent with qRT-PCR and microarray results. Furthermore, western blot analysis using anti-AtACBP6 antibodies showed a reduction in AtACBP6 expression in the pdlp8 T-DNA insertional mutant, suggesting that PDLP8 may possibly influence AtACBP6 accumulation in the sieve elements, probably in the plasmodesmata, where PDLP8 is confined and to where AtACBP6 has been immunodetected.
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Affiliation(s)
- Zi-Wei Ye
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
| | - Qin-Fang Chen
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
| | - Mee-Len Chye
- School of Biological Sciences, The University of Hong Kong, Hong Kong, China
- CONTACT Mee-Len Chye , School of Biological Sciences, The University of Hong Kong, 7S13, Kadoorie Building, HKU, Pokfulam, Hong Kong, China
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Ye ZW, Xu J, Shi J, Zhang D, Chye ML. Kelch-motif containing acyl-CoA binding proteins AtACBP4 and AtACBP5 are differentially expressed and function in floral lipid metabolism. Plant Mol Biol 2017; 93:209-225. [PMID: 27826761 DOI: 10.1007/s11103-016-0557-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 02/22/2016] [Accepted: 10/30/2016] [Indexed: 05/14/2023]
Abstract
We herein demonstrated two of the Arabidopsis acyl-CoA-binding proteins (ACBPs), AtACBP4 and AtACBP5, both function in floral lipid metabolism and they may possibly play complementary roles in Arabidopsis microspore-to-pollen development. Histological analysis on transgenic Arabidopsis expressing β-glucuronidase driven from the AtACBP4 and AtACBP5 promoters, as well as, qRTPCR analysis revealed that AtACBP4 was expressed at stages 11-14 in the mature pollen, while AtACBP5 was expressed at stages 7-10 in the microspores and tapetal cells. Immunoelectron microscopy using AtACBP4- or AtACBP5-specific antibodies further showed that AtACBP4 and AtACBP5 were localized in the cytoplasm. Chemical analysis of bud wax and cutin using gas chromatographyflame ionization detector and GC-mass spectrometry analyses revealed the accumulation of cuticular waxes and cutin monomers in acbp4, acbp5 and acbp4acbp5 buds in comparison to the wild type (Col-0). Fatty acid profiling demonstrated a decline in stearic acid and an increase in linolenic acid in acbp4 and acbp4acbp5 buds, respectively, over Col-0. Analysis of inflorescences from acbp4 and acbp5 revealed that there was an increase of AtACBP5 expression in acbp4, and an increase of AtACBP4 expression in acbp5. Deletion analysis of the AtACBP4 and AtACBP5 5'-flanking regions indicated the minimal promoter activity for AtACBP4 (-145/+103) and AtACBP5 (-181/+81). Electrophoretic mobility shift assays identified a pollen-specific cis-acting element POLLEN1 (AGAAA) mapped at AtACBP4 (-157/-153) which interacted with nuclear proteins from flower and this was substantiated by DNase I footprinting. In Arabidopsis thaliana, six acyl-CoA-binding proteins (ACBPs), designated as AtACBP1 to AtACBP6, have been identified to function in plant stress and development. AtACBP4 and AtACBP5 represent the two largest proteins in the AtACBP family. Despite having kelch-motifs and sharing a common cytosolic subcellular localization, AtACBP4 and AtACBP5 differ in spatial and temporal expression. Histological analysis on transgenic Arabidopsis expressing β-glucuronidase driven from the respective AtACBP4 and AtACBP5 promoters, as well as, qRT-PCR analysis revealed that AtACBP4 was expressed at stages 11-14 in mature pollen, while AtACBP5 was expressed at stages 7-10 in the microspores and tapetal cells. Immunoelectron microscopy using AtACBP4- or AtACBP5-specific antibodies further showed that AtACBP4 and AtACBP5 were localized in the cytoplasm. Chemical analysis of bud wax and cutin using gas chromatography-flame ionization detector and GC-mass spectrometry analyses revealed the accumulation of cuticular waxes and cutin monomers in acbp4, acbp5 and acbp4acbp5 buds, in comparison to the wild type. Analysis of inflorescences from acbp4 and acbp5 revealed that there was an increase of AtACBP5 expression in acbp4, and an increase of AtACBP4 expression in acbp5. Deletion analysis of the AtACBP4 and AtACBP5 5'-flanking regions indicated the minimal promoter region for AtACBP4 (-145/+103) and AtACBP5 (-181/+81). Electrophoretic mobility shift assays identified a pollen-specific cis-acting element POLLEN1 (AGAAA) within AtACBP4 (-157/-153) which interacted with nuclear proteins from flower and this was substantiated by DNase I footprinting. These results suggest that AtACBP4 and AtACBP5 both function in floral lipidic metabolism and they may play complementary roles in Arabidopsis microspore-to-pollen development.
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Affiliation(s)
- Zi-Wei Ye
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Jie Xu
- Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Jianxin Shi
- Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Mee-Len Chye
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
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Ye ZW, Lung SC, Hu TH, Chen QF, Suen YL, Wang M, Hoffmann-Benning S, Yeung E, Chye ML. Arabidopsis acyl-CoA-binding protein ACBP6 localizes in the phloem and affects jasmonate composition. Plant Mol Biol 2016; 92:717-730. [PMID: 27645136 DOI: 10.1007/s11103-016-0541-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 04/13/2016] [Accepted: 09/07/2016] [Indexed: 05/20/2023]
Abstract
Arabidopsis thaliana ACYL-COA-BINDING PROTEIN6 (AtACBP6) encodes a cytosolic 10-kDa AtACBP. It confers freezing tolerance in transgenic Arabidopsis, possibly by its interaction with lipids as indicated by the binding of acyl-CoA esters and phosphatidylcholine to recombinant AtACBP6. Herein, transgenic Arabidopsis transformed with an AtACBP6 promoter-driven β-glucuronidase (GUS) construct exhibited strong GUS activity in the vascular tissues. Immunoelectron microscopy using anti-AtACBP6 antibodies showed AtACBP6 localization in the phloem especially in the companion cells and sieve elements. Also, the presence of gold grains in the plasmodesmata indicated its potential role in systemic trafficking. The AtACBP6 protein, but not its mRNA, was found in phloem exudate of wild-type Arabidopsis. Fatty acid profiling using gas chromatography-mass spectrometry revealed an increase in the jasmonic acid (JA) precursor, 12-oxo-cis,cis-10,15-phytodienoic acid (cis-OPDA), and a reduction in JA and/or its derivatives in acbp6 phloem exudates in comparison to the wild type. Quantitative real-time PCR showed down-regulation of COMATOSE (CTS) in acbp6 rosettes suggesting that AtACBP6 affects CTS function. AtACBP6 appeared to affect the content of JA and/or its derivatives in the sieve tubes, which is consistent with its role in pathogen-defense and in its wound-inducibility of AtACBP6pro::GUS. Taken together, our results suggest the involvement of AtACBP6 in JA-biosynthesis in Arabidopsis phloem tissues.
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Affiliation(s)
- Zi-Wei Ye
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Shiu-Cheung Lung
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Tai-Hua Hu
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Qin-Fang Chen
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Yung-Lee Suen
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Mingfu Wang
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Susanne Hoffmann-Benning
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Edward Yeung
- Department of Biological Sciences, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Mee-Len Chye
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
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Hsiao AS, Yeung EC, Ye ZW, Chye ML. The Arabidopsis cytosolic Acyl-CoA-binding proteins play combinatory roles in pollen development. Plant Cell Physiol 2015; 56:322-33. [PMID: 25395473 DOI: 10.1093/pcp/pcu163] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
In Arabidopsis, six acyl-CoA-binding proteins (ACBPs) have been identified and they have been demonstrated to function in plant stress responses and development. Three of these AtACBPs (AtACBP4-AtACBP6) are cytosolic proteins and all are expressed in floral organs as well as in other tissues. The roles of cytosolic AtACBPs in floral development were addressed in this study. To this end, a T-DNA insertional knockout mutant of acbp5 was characterized before use in crosses with the already available acbp4 and acbp6 T-DNA knockout mutants to examine their independent and combinatory functions in floral development. The single-gene knockout mutations did not cause any significant phenotypic changes, while phenotypic deficiencies affecting siliques and pollen were observed in the double mutants (acbp4acbp6 and acbp5acbp6) and the acbp4acbp5acbp6 triple mutant. Vacuole accumulation in the acbp4acbp6, acbp5acbp6 and acbp4acbp5acbp6 pollen was the most severe abnormality occurring in the double and triple mutants. Furthermore, scanning electron microscopy and transmission electron microscopy revealed exine and oil body defects in the acbp4acbp5acbp6 mutant, which also displayed reduced ability in in vitro pollen germination. Transgenic Arabidopsis expressing β-glucuronidase (GUS) driven from the various AtACBP promoters indicated that AtACBP6pro::GUS expression overlapped with AtACBP4pro::GUS expression in pollen grains and with AtACBP5pro::GUS expression in the microspores and tapetal cells. Taken together, these results suggest that the three cytosolic AtACBPs play combinatory roles in acyl-lipid metabolism during pollen development.
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Affiliation(s)
- An-Shan Hsiao
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Edward C Yeung
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N1N4, Canada
| | - Zi-Wei Ye
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Mee-Len Chye
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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Abstract
Since their introduction in the 1960s, benzodiazepines (BZs) remain one of the most commonly prescribed medications, acting as potent sedatives, hypnotics, anxiolytics, anticonvulsants, and muscle relaxants. The primary neural action of BZs and related compounds is augmentation of inhibitory transmission, which occurs through allosteric modulation of the gamma-aminobutyric acid (GABA)-induced current at the gamma-aminobutyric acid receptor (GABAAR). The discovery of the BZ-binding site on GABAARs encouraged many to speculate that the brain produces its own endogenous ligands to this site (Costa & Guidotti, 1985). The romanticized quest for endozepines, endogenous ligands to the BZ-binding site, has uncovered a variety of ligands that might fulfill this role, including oleamides (Cravatt et al., 1995), nonpeptidic endozepines (Rothstein et al., 1992), and the protein diazepam-binding inhibitor (DBI) (Costa & Guidotti, 1985). Of these ligands, DBI, and affiliated peptide fragments, is the most extensively studied endozepine. The quest for the "brain's Valium" over the decades has been elusive as mainly negative allosteric modulatory effects have been observed (Alfonso, Le Magueresse, Zuccotti, Khodosevich, & Monyer, 2012; Costa & Guidotti, 1985), but recent evidence is accumulating that DBI displays regionally discrete endogenous positive modulation of GABA transmission through activation of the BZ receptor (Christian et al., 2013). Herein, we review the literature on this topic, focusing on identification of the endogenous molecule and its region-specific expression and function.
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Xue Y, Xiao S, Kim J, Lung SC, Chen L, Tanner JA, Suh MC, Chye ML. Arabidopsis membrane-associated acyl-CoA-binding protein ACBP1 is involved in stem cuticle formation. J Exp Bot 2014; 65:5473-83. [PMID: 25053648 PMCID: PMC4157719 DOI: 10.1093/jxb/eru304] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The membrane-anchored Arabidopsis thaliana ACYL-COA-BINDING PROTEIN1 (AtACBP1) plays important roles in embryogenesis and abiotic stress responses, and interacts with long-chain (LC) acyl-CoA esters. Here, AtACBP1 function in stem cuticle formation was investigated. Transgenic Arabidopsis transformed with an AtACBP1pro::GUS construct revealed β-glucuronidase (GUS) expression on the stem (but not leaf) surface, suggesting a specific role in stem cuticle formation. Isothermal titration calorimetry results revealed that (His)6-tagged recombinant AtACBP1 interacts with LC acyl-CoA esters (18:1-, 18:2-, and 18:3-CoAs) and very-long-chain (VLC) acyl-CoA esters (24:0-, 25:0-, and 26:0-CoAs). VLC fatty acids have been previously demonstrated to act as precursors in wax biosynthesis. Gas chromatography (GC)-flame ionization detector (FID) and GC-mass spectrometry (MS) analyses revealed that an acbp1 mutant showed a reduction in stem and leaf cuticular wax and stem cutin monomer composition in comparison with the wild type (Col-0). Consequently, the acbp1 mutant showed fewer wax crystals on the stem surface in scanning electron microscopy and an irregular stem cuticle layer in transmission electron microscopy in comparison with the wild type. Also, the mutant stems consistently showed a decline in expression of cuticular wax and cutin biosynthetic genes in comparison with the wild type, and the mutant leaves were more susceptible to infection by the necrotrophic pathogen Botrytis cinerea. Taken together, these findings suggest that AtACBP1 participates in Arabidopsis stem cuticle formation by trafficking VLC acyl-CoAs.
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Affiliation(s)
- Yan Xue
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Shi Xiao
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Juyoung Kim
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 500-757, Korea
| | - Shiu-Cheung Lung
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Liang Chen
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Julian A Tanner
- Department of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Mi Chung Suh
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 500-757, Korea
| | - Mee-Len Chye
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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