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Hou HW, Bishop CA, Huckauf J, Broer I, Klaus S, Nausch H, Buyel JF. Seed- and leaf-based expression of FGF21-transferrin fusion proteins for oral delivery and treatment of non-alcoholic steatohepatitis. FRONTIERS IN PLANT SCIENCE 2022; 13:998596. [PMID: 36247628 PMCID: PMC9557105 DOI: 10.3389/fpls.2022.998596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 08/29/2022] [Indexed: 06/16/2023]
Abstract
Non-alcoholic steatohepatitis (NASH) is a global disease with no effective medication. The fibroblast growth factor 21 (FGF21) can reverse this liver dysfunction, but requires targeted delivery to the liver, which can be achieved via oral administration. Therefore, we fused FGF21 to transferrin (Tf) via a furin cleavage site (F), to promote uptake from the intestine into the portal vein, yielding FGF21-F-Tf, and established its production in both seeds and leaves of commercial Nicotiana tabacum cultivars, compared their expression profile and tested the bioavailability and bioactivity in feeding studies. Since biopharmaceuticals need to be produced in a contained environment, e.g., greenhouses in case of plants, the seed production was increased in this setting from 239 to 380 g m-2 a-1 seed mass with costs of 1.64 € g-1 by side branch induction, whereas leaves yielded 8,193 g m-2 a-1 leave mass at 0.19 € g-1. FGF21-F-Tf expression in transgenic seeds and leaves yielded 6.7 and 5.6 mg kg-1 intact fusion protein, but also 4.5 and 2.3 mg kg-1 additional Tf degradation products. Removing the furin site and introducing the liver-targeting peptide PLUS doubled accumulation of intact FGF21-transferrin fusion protein when transiently expressed in Nicotiana benthamiana from 0.8 to 1.6 mg kg-1, whereas truncation of transferrin (nTf338) and reversing the order of FGF21 and nTf338 increased the accumulation to 2.1 mg kg-1 and decreased the degradation products to 7% for nTf338-FGF21-PLUS. Application of partially purified nTf338-FGF21-PLUS to FGF21-/- mice by oral gavage proved its transfer from the intestine into the blood circulation and acutely affected hepatic mRNA expression. Hence, the medication of NASH via oral delivery of nTf338-FGF21-PLUS containing plants seems possible.
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Affiliation(s)
- Hsuan-Wu Hou
- Department Bioprocess Engineering, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Aachen, Germany
- Chair for Agrobiotechnology, University of Rostock, Rostock, Germany
| | - Christopher A. Bishop
- Department of Physiology of Energy Metabolism, German Institute of Human Nutrition Potsdam-Rehbrücke, Nuthetal, Germany
- Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Jana Huckauf
- Chair for Agrobiotechnology, University of Rostock, Rostock, Germany
| | - Inge Broer
- Chair for Agrobiotechnology, University of Rostock, Rostock, Germany
| | - Susanne Klaus
- Department of Physiology of Energy Metabolism, German Institute of Human Nutrition Potsdam-Rehbrücke, Nuthetal, Germany
- Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Henrik Nausch
- Department Bioprocess Engineering, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Aachen, Germany
| | - Johannes F. Buyel
- Department Bioprocess Engineering, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Aachen, Germany
- Institute of Molecular Biotechnology, RWTH Aachen University, Aachen, Germany
- Department of Biotechnology (DBT), Institute of Bioprocess Science and Engineering (IBSE), University of Natural Resources and Life Sciences (BOKU), Vienna, Austria
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Lin X, Liu H, Zhao H, Xia S, Li Y, Wang C, Huang Q, Wanggou S, Li X. Immune Infiltration Associated MAN2B1 Is a Novel Prognostic Biomarker for Glioma. Front Oncol 2022; 12:842973. [PMID: 35186771 PMCID: PMC8847305 DOI: 10.3389/fonc.2022.842973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 01/10/2022] [Indexed: 11/13/2022] Open
Abstract
Mannosidase Alpha Class 2B Member 1 (MAN2B1) gene encodes lysosomal alpha-d-mannosidase involved in the ordered degradation of N-linked glycoproteins. Alteration in MAN2B1 has been proved to be accountable for several diseases. However, the relationship between MAN2B1 and glioma malignancy remains unclear. In this study, RNA-seq data from The Cancer Genome Atlas and the Chinese Glioma Genome Atlas datasets were analyzed to explore the correlation between MAN2B1 and clinicopathological features, prognosis, and somatic mutations in gliomas. We found that MAN2B1 was elevated in glioma and was correlated with malignant clinical and molecular features. Upregulated expression of MAN2B1 is prognostic for poor outcomes in glioma patients. Different frequencies of somatic mutations were found in gliomas between high and low MAN2B1 expression. Real-time quantitative polymerase chain reaction, western blot, and immunohistochemistry staining from glioma patient samples and cell lines were used to validate bioinformatic findings. Functional enrichment analysis showed that MAN2B1 was involved in immune and inflammation processes. Moreover, MAN2B1 expression was strongly correlated with M2 macrophages and weakly correlated with M1 macrophages. Further analysis confirmed that MAN2B1 was closely associated with the markers of M2 macrophages and tumor-associated macrophages. Taken together, MAN2B1 is a potential prognostic biomarker in glioma and associates with immune infiltration.
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Affiliation(s)
- Xuelei Lin
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of BrainTumor Research, Xiangya Hospital, Central South University, Changsha, China
| | - Hongwei Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of BrainTumor Research, Xiangya Hospital, Central South University, Changsha, China
| | - Hongyu Zhao
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of BrainTumor Research, Xiangya Hospital, Central South University, Changsha, China
| | - Shunjin Xia
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of BrainTumor Research, Xiangya Hospital, Central South University, Changsha, China
| | - Yueshuo Li
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Chaoqian Wang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of BrainTumor Research, Xiangya Hospital, Central South University, Changsha, China
| | - Qi Huang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of BrainTumor Research, Xiangya Hospital, Central South University, Changsha, China
| | - Siyi Wanggou
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of BrainTumor Research, Xiangya Hospital, Central South University, Changsha, China
| | - Xuejun Li
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of BrainTumor Research, Xiangya Hospital, Central South University, Changsha, China
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Bellucci M, Pompa A, De Marcos Lousa C, Panfili E, Orecchini E, Maricchiolo E, Fraternale D, Orabona C, De Marchis F, Pallotta MT. Human Indoleamine 2,3-dioxygenase 1 (IDO1) Expressed in Plant Cells Induces Kynurenine Production. Int J Mol Sci 2021; 22:5102. [PMID: 34065885 PMCID: PMC8151846 DOI: 10.3390/ijms22105102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/21/2021] [Accepted: 05/08/2021] [Indexed: 01/07/2023] Open
Abstract
Genetic engineering of plants has turned out to be an attractive approach to produce various secondary metabolites. Here, we attempted to produce kynurenine, a health-promoting metabolite, in plants of Nicotiana tabacum (tobacco) transformed by Agrobacterium tumefaciens with the gene, coding for human indoleamine 2,3-dioxygenase 1 (IDO1), an enzyme responsible for the kynurenine production because of tryptophan degradation. The presence of IDO1 gene in transgenic plants was confirmed by PCR, but the protein failed to be detected. To confer higher stability to the heterologous human IDO1 protein and to provide a more sensitive method to detect the protein of interest, we cloned a gene construct coding for IDO1-GFP. Analysis of transiently transfected tobacco protoplasts demonstrated that the IDO1-GFP gene led to the expression of a detectable protein and to the production of kynurenine in the protoplast medium. Interestingly, the intracellular localisation of human IDO1 in plant cells is similar to that found in mammal cells, mainly in cytosol, but in early endosomes as well. To the best of our knowledge, this is the first report on the expression of human IDO1 enzyme capable of secreting kynurenines in plant cells.
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Affiliation(s)
- Michele Bellucci
- Institute of Biosciences and Bioresources, National Research Council of Italy, 06128 Perugia, Italy; (M.B.); (A.P.)
| | - Andrea Pompa
- Institute of Biosciences and Bioresources, National Research Council of Italy, 06128 Perugia, Italy; (M.B.); (A.P.)
- Department of Biomolecular Sciences, University Carlo Bo, 61029 Urbino, Italy; (E.M.); (D.F.)
| | - Carine De Marcos Lousa
- Centre for Biomedical Sciences, School of Clinical and Applied Sciences, Leeds Beckett University, Leeds LS13HE, UK;
- Centre for Plant Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS29JT, UK
| | - Eleonora Panfili
- Department of Medicine and Surgery, University of Perugia, 06128 Perugia, Italy; (E.P.); (E.O.); (C.O.)
| | - Elena Orecchini
- Department of Medicine and Surgery, University of Perugia, 06128 Perugia, Italy; (E.P.); (E.O.); (C.O.)
| | - Elisa Maricchiolo
- Department of Biomolecular Sciences, University Carlo Bo, 61029 Urbino, Italy; (E.M.); (D.F.)
| | - Daniele Fraternale
- Department of Biomolecular Sciences, University Carlo Bo, 61029 Urbino, Italy; (E.M.); (D.F.)
| | - Ciriana Orabona
- Department of Medicine and Surgery, University of Perugia, 06128 Perugia, Italy; (E.P.); (E.O.); (C.O.)
| | - Francesca De Marchis
- Institute of Biosciences and Bioresources, National Research Council of Italy, 06128 Perugia, Italy; (M.B.); (A.P.)
| | - Maria Teresa Pallotta
- Department of Medicine and Surgery, University of Perugia, 06128 Perugia, Italy; (E.P.); (E.O.); (C.O.)
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Gad D, El-Shora H, Fraternale D, Maricchiolo E, Pompa A, Dietz KJ. Bioconversion of Callus-Produced Precursors to Silymarin Derivatives in Silybum marianum Leaves for the Production of Bioactive Compounds. Int J Mol Sci 2021; 22:2149. [PMID: 33670070 PMCID: PMC7926748 DOI: 10.3390/ijms22042149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 12/02/2022] Open
Abstract
The present study aimed to investigate the enzymatic potential of Silybum marianum leaves to bioconvert phenolic acids produced in S. marianum callus into silymarin derivatives as chemopreventive agent. Here we demonstrate that despite the fact that leaves of S. marianum did not accumulate silymarin themselves, expanding leaves had the full capacity to convert di-caffeoylquinic acid to silymarin complex. This was proven by HPLC separations coupled with electrospray ionization mass spectrometry (ESI-MS) analysis. Soaking the leaf discs with S. marianum callus extract for different times revealed that silymarin derivatives had been formed at high yield after 16 h. Bioconverted products displayed the same retention time and the same mass spectra (MS or MS/MS) as standard silymarin. Bioconversion was achieved only when using leaves of a specific age, as both very young and old leaves failed to produce silymarin from callus extract. Only medium leaves had the metabolic capacity to convert callus components into silymarin. The results revealed higher activities of enzymes of the phenylpropanoid pathway in medium leaves than in young and old leaves. It is concluded that cotyledon-derived callus efficiently produces compounds that can be bio-converted to flavonolignans in leaves tissue of S. marianum.
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Affiliation(s)
- Dina Gad
- Botany and Microbiology Department, Faculty of Science, Menoufia University, Shebin EL-Koum 32511, Egypt
- Biochemistry and Physiology of Plants, Faculty of Biology W5, Bielefeld University, 33501 Bielefeld, Germany;
| | - Hamed El-Shora
- Botany Department, Faculty of Science, Mansoura University, Mansoura 35511, Egypt;
| | - Daniele Fraternale
- Department of Biomolecular Sciences, University of Urbino “Carlo Bo” Via Donato Bramante, 28, 61029 Urbino, Italy; (D.F.); (E.M.)
| | - Elisa Maricchiolo
- Department of Biomolecular Sciences, University of Urbino “Carlo Bo” Via Donato Bramante, 28, 61029 Urbino, Italy; (D.F.); (E.M.)
| | - Andrea Pompa
- Department of Biomolecular Sciences, University of Urbino “Carlo Bo” Via Donato Bramante, 28, 61029 Urbino, Italy; (D.F.); (E.M.)
| | - Karl-Josef Dietz
- Biochemistry and Physiology of Plants, Faculty of Biology W5, Bielefeld University, 33501 Bielefeld, Germany;
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I-152, a supplier of N-acetyl-cysteine and cysteamine, inhibits immunoglobulin secretion and plasma cell maturation in LP-BM5 murine leukemia retrovirus-infected mice by affecting the unfolded protein response. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165922. [PMID: 32800945 DOI: 10.1016/j.bbadis.2020.165922] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/16/2020] [Accepted: 08/08/2020] [Indexed: 12/27/2022]
Abstract
Excessive production of immunoglobulins (Ig) causes endoplasmic reticulum (ER) stress and triggers the unfolded protein response (UPR). Hypergammaglobulinemia and lymphadenopathy are hallmarks of murine AIDS that develops in mice infected with the LP-BM5 murine leukemia retrovirus complex. In these mice, Th2 polarization and aberrant humoral response have been previously correlated to altered intracellular redox homeostasis. Our goal was to understand the role of the cell's redox state in Ig secretion and plasma cell (PC) maturation. To this aim, LP-BM5-infected mice were treated with I-152, an N-acetyl-cysteine and cysteamine supplier. Intraperitoneal I-152 administration (30 μmol/mouse three times a week for 9 weeks) decreased plasma IgG and increased IgG/Syndecan 1 ratio in the lymph nodes where IgG were in part accumulated within the ER. PC containing cytoplasmic inclusions filled with IgG were present in all animals, with fewer mature PC in those treated with I-152. Infection induced up-regulation of signaling molecules involved in the UPR, i.e. CHAC1, BiP, sXBP-1 and PDI, that were generally unaffected by I-152 treatment except for PDI and sXBP-1, which have a key role in protein folding and PC maturation, respectively. Our data suggest that one of the mechanisms through which I-152 can limit hypergammaglobulinemia in LP-BM5-infected mice is by influencing IgG folding/assembly as well as secretion and affecting PC maturation.
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Rodriguez-Hernandez M, Triggiani D, Ivison F, Demurtas OC, Illiano E, Marino C, Franconi R, Massa S. Expression of a Functional Recombinant Human Glycogen Debranching Enzyme (hGDE) in N. benthamiana Plants and in Hairy Root Cultures. Protein Pept Lett 2020; 27:145-157. [PMID: 31622193 DOI: 10.2174/0929866526666191014154047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 05/14/2019] [Accepted: 08/02/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Glycogen storage disease type III (GSDIII, Cori/Forbes disease) is a metabolic disorder due to the deficiency of the Glycogen Debranching Enzyme (GDE), a large monomeric protein (about 176 kDa) with two distinct enzymatic activities: 4-α-glucantransferase and amylo-α-1,6-glucosidase. Several mutations along the amylo-alpha-1,6-glucosidase,4-alphaglucanotransferase (Agl) gene are associated with loss of enzymatic activity. The unique treatment for GSDIII, at the moment, is based on diet. The potential of plants to manufacture exogenous engineered compounds for pharmaceutical purposes, from small to complex protein molecules such as vaccines, antibodies and other therapeutic/prophylactic entities, was shown by modern biotechnology through "Plant Molecular Farming". OBJECTIVE AND METHODS In an attempt to develop novel protein-based therapeutics for GSDIII, the Agl gene, encoding for the human GDE (hGDE) was engineered for expression as a histidinetagged GDE protein both in Nicotiana benthamiana plants by a transient expression approach, and in axenic hairy root in vitro cultures (HR) from Lycopersicum esculentum and Beta vulgaris. RESULTS In both plant-based expression formats, the hGDE protein accumulated in the soluble fraction of extracts. The plant-derived protein was purified by affinity chromatography in native conditions showing glycogen debranching activity. CONCLUSION These investigations will be useful for the design of a new generation of biopharmaceuticals based on recombinant GDE protein that might represent, in the future, a possible therapeutic option for GSDIII.
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Affiliation(s)
- Meilyn Rodriguez-Hernandez
- Center for Genetic Engineering and Biotechnology (CIGB), Direction of Agricultural Biotechnology, Havana,Cuba
| | - Doriana Triggiani
- Italian Glycogen Storage Disease Association (AIG) NPO, Assago, Milan, Italy
- Department of Sustainability (SSPT), Biomedical Technologies Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development ENEA, Rome,Italy
| | - Fiona Ivison
- Department of Biochemistry, Manchester University NHS Foundation Trust, Manchester,United Kingdom
| | - Olivia C Demurtas
- Department of Sustainability (SSPT), Biotechnology Laboratory, ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome,Italy
| | - Elena Illiano
- Department of Sustainability (SSPT), Biomedical Technologies Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development ENEA, Rome,Italy
| | - Carmela Marino
- Department of Sustainability (SSPT), Biomedical Technologies Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development ENEA, Rome,Italy
| | - Rosella Franconi
- Department of Sustainability (SSPT), Biomedical Technologies Laboratory, Italian National Agency for New Technologies, Energy and Sustainable Economic Development ENEA, Rome,Italy
| | - Silvia Massa
- Department of Sustainability (SSPT), Biotechnology Laboratory, ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome,Italy
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Ajith Kumar A, Siva Kumar N. Biochemical Characterization of a Lysosomal α-Mannosidase from the Starfish Asterias rubens. Protein J 2018; 37:361-368. [PMID: 29882184 DOI: 10.1007/s10930-018-9778-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Acidic α-mannosidase is an important enzyme and is reported from many different plants and animals. Lysosomal α-mannosidase helps in the catabolism of glycoproteins in the lysosomes thereby playing a major role in cellular homeostasis. In the present study lysosomal α-mannosidase from the gonads of echinoderm Asterias rubens was isolated and purified. The crude protein sample from ammonium sulfate precipitate contained two isoforms of mannosidase as tested by the MAN2B1 antibody, which were separated by anion exchange chromatography. Enzyme with 75 kDa molecular weight was purified and biochemically characterized. Optimum pH of the enzyme was found to be in the range of 4.5-5 and optimum temperature was 37 °C. The activity of the enzyme was inhibited completely by swainsonine but not by 1-deoxymannojirimycin. Ligand blot assays showed that the enzyme can interact with both the lysosomal enzyme sorting receptors indicating the presence of mannose 6-phosphate in the glycan surface of the enzyme. This is the first report of lysosomal α-mannosidase in an active monomeric form. Its interaction with the receptors suggest that the lysosomal enzyme targeting in echinoderms might follow a mannose 6-phosphate mediated pathway similar to that in the vertebrates.
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Affiliation(s)
- Aravindakshan Ajith Kumar
- Protein Biochemistry and Glycobiology Laboratory, Department of Biochemistry, University of Hyderabad, Hyderabad, 500046, India
| | - Nadimpalli Siva Kumar
- Protein Biochemistry and Glycobiology Laboratory, Department of Biochemistry, University of Hyderabad, Hyderabad, 500046, India.
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Bellucci M, De Marchis F, Pompa A. The endoplasmic reticulum is a hub to sort proteins toward unconventional traffic pathways and endosymbiotic organelles. JOURNAL OF EXPERIMENTAL BOTANY 2017; 69:7-20. [PMID: 28992342 DOI: 10.1093/jxb/erx286] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 07/24/2017] [Indexed: 05/25/2023]
Abstract
The discovery that much of the extracellular proteome in eukaryotic cells consists of proteins lacking a signal peptide, which cannot therefore enter the secretory pathway, has led to the identification of alternative protein secretion routes bypassing the Golgi apparatus. However, proteins harboring a signal peptide for translocation into the endoplasmic reticulum can also be transported along these alternative routes, which are still far from being well elucidated in terms of the molecular machineries and subcellular/intermediate compartments involved. In this review, we first try to provide a definition of all the unconventional protein secretion pathways in eukaryotic cells, as those pathways followed by proteins directed to an 'external space' bypassing the Golgi, where 'external space' refers to the extracellular space plus the lumen of the secretory route compartments and the inner space of mitochondria and plastids. Then, we discuss the role of the endoplasmic reticulum in sorting proteins toward unconventional traffic pathways in plants. In this regard, various unconventional pathways exporting proteins from the endoplasmic reticulum to the vacuole, plasma membrane, apoplast, mitochondria, and plastids are described, including the short routes followed by the proteins resident in the endoplasmic reticulum.
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Affiliation(s)
- Michele Bellucci
- Institute of Biosciences and Bioresources, Research Division of Perugia, National Research Council (CNR), Italy
| | - Francesca De Marchis
- Institute of Biosciences and Bioresources, Research Division of Perugia, National Research Council (CNR), Italy
| | - Andrea Pompa
- Institute of Biosciences and Bioresources, Research Division of Perugia, National Research Council (CNR), Italy
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De Marchis F, Bellucci M, Pompa A. Phaseolin expression in tobacco chloroplast reveals an autoregulatory mechanism in heterologous protein translation. PLANT BIOTECHNOLOGY JOURNAL 2016; 14:603-14. [PMID: 26031839 DOI: 10.1111/pbi.12405] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 03/20/2015] [Accepted: 04/25/2015] [Indexed: 06/04/2023]
Abstract
Plastid DNA engineering is a well-established research area of plant biotechnology, and plastid transgenes often give high expression levels. However, it is still almost impossible to predict the accumulation rate of heterologous protein in transplastomic plants, and there are many cases of unsuccessful transgene expression. Chloroplasts regulate their proteome at the post-transcriptional level, mainly through translation control. One of the mechanisms to modulate the translation has been described in plant chloroplasts for the chloroplast-encoded subunits of multiprotein complexes, and the autoregulation of the translation initiation of these subunits depends on the availability of their assembly partners [control by epistasy of synthesis (CES)]. In Chlamydomonas reinhardtii, autoregulation of endogenous proteins recruited in the assembly of functional complexes has also been reported. In this study, we revealed a self-regulation mechanism triggered by the accumulation of a soluble recombinant protein, phaseolin, in the stroma of chloroplast-transformed tobacco plants. Immunoblotting experiments showed that phaseolin could avoid this self-regulation mechanism when targeted to the thylakoids in transplastomic plants. To inhibit the thylakoid-targeted phaseolin translation as well, this protein was expressed in the presence of a nuclear version of the phaseolin gene with a transit peptide. Pulse-chase and polysome analysis revealed that phaseolin mRNA translation on plastid ribosomes was repressed due to the accumulation in the stroma of the same soluble polypeptide imported from the cytosol. We suggest that translation autoregulation in chloroplast is not limited to heteromeric protein subunits but also involves at least some of the foreign soluble recombinant proteins, leading to the inhibition of plastome-encoded transgene expression in chloroplast.
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Affiliation(s)
- Francesca De Marchis
- Research Division of Perugia, Institute of Biosciences and Bioresources, National Research Council, Perugia, Italy
| | - Michele Bellucci
- Research Division of Perugia, Institute of Biosciences and Bioresources, National Research Council, Perugia, Italy
| | - Andrea Pompa
- Research Division of Perugia, Institute of Biosciences and Bioresources, National Research Council, Perugia, Italy
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10
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De Marchis F, Valeri MC, Pompa A, Bouveret E, Alagna F, Grisan S, Stanzione V, Mariotti R, Cultrera N, Baldoni L, Bellucci M. Overexpression of the olive acyl carrier protein gene (OeACP1) produces alterations in fatty acid composition of tobacco leaves. Transgenic Res 2016; 25:45-61. [PMID: 26560313 DOI: 10.1007/s11248-015-9919-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 11/05/2015] [Indexed: 01/24/2023]
Abstract
Taking into account that fatty acid (FA) biosynthesis plays a crucial role in lipid accumulation in olive (Olea europaea L.) mesocarp, we investigated the effect of olive acyl carrier protein (ACP) on FA composition by overexpressing an olive ACP cDNA in tobacco plants. The OeACP1.1A cDNA was inserted in the nucleus or in the chloroplast DNA of different tobacco plants, resulting in extensive transcription of the transgenes. The transplastomic plants accumulated lower olive ACP levels in comparison to nuclear-transformed plants. Moreover, the phenotype of the former plants was characterized by pale green/white cotyledons with abnormal chloroplasts, delayed germination and reduced growth. We suggest that the transplastomic phenotype was likely caused by inefficient olive ACP mRNA translation in chloroplast stroma. Conversely, total lipids from leaves of nuclear transformants expressing high olive ACP levels showed a significant increase in oleic acid (18:1) and linolenic acid (18:3), and a concomitant significant reduction of hexadecadienoic acid (16:2) and hexadecatrienoic acid (16:3). This implies that in leaves of tobacco transformants, as likely in the mesocarp of olive fruit, olive ACP not only plays a general role in FA synthesis, but seems to be specifically involved in chain length regulation forwarding the elongation to C18 FAs and the subsequent desaturation to 18:1 and 18:3.
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Affiliation(s)
- Francesca De Marchis
- Institute of Biosciences and Bioresources (IBBR), Research Division of Perugia, CNR, Via Madonna Alta 130, 06128, Perugia, Italy
| | - Maria Cristina Valeri
- Institute of Biosciences and Bioresources (IBBR), Research Division of Perugia, CNR, Via Madonna Alta 130, 06128, Perugia, Italy
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, 56127, Pisa, Italy
| | - Andrea Pompa
- Institute of Biosciences and Bioresources (IBBR), Research Division of Perugia, CNR, Via Madonna Alta 130, 06128, Perugia, Italy
| | | | - Fiammetta Alagna
- Institute of Biosciences and Bioresources (IBBR), Research Division of Perugia, CNR, Via Madonna Alta 130, 06128, Perugia, Italy
- Research Unit for Table Grapes and Wine Growing in Mediterranean Environment, CREA, Via Casamassima 148, Turi, 70010, Bari, Italy
| | - Simone Grisan
- Institute of Biosciences and Bioresources (IBBR), Research Division of Perugia, CNR, Via Madonna Alta 130, 06128, Perugia, Italy
| | - Vitale Stanzione
- Institute for Agricultural and Forest Systems in the Mediterranean (ISAFOM), Research Division of Perugia, CNR, Via Madonna Alta 128, 06128, Perugia, Italy
| | - Roberto Mariotti
- Institute of Biosciences and Bioresources (IBBR), Research Division of Perugia, CNR, Via Madonna Alta 130, 06128, Perugia, Italy
| | - Nicolò Cultrera
- Institute of Biosciences and Bioresources (IBBR), Research Division of Perugia, CNR, Via Madonna Alta 130, 06128, Perugia, Italy
| | - Luciana Baldoni
- Institute of Biosciences and Bioresources (IBBR), Research Division of Perugia, CNR, Via Madonna Alta 130, 06128, Perugia, Italy
| | - Michele Bellucci
- Institute of Biosciences and Bioresources (IBBR), Research Division of Perugia, CNR, Via Madonna Alta 130, 06128, Perugia, Italy.
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11
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Espejo-Mojica ÁJ, Alméciga-Díaz CJ, Rodríguez A, Mosquera Á, Díaz D, Beltrán L, Díaz S, Pimentel N, Moreno J, Sánchez J, Sánchez OF, Córdoba H, Poutou-Piñales RA, Barrera LA. Human recombinant lysosomal enzymes produced in microorganisms. Mol Genet Metab 2015; 116:13-23. [PMID: 26071627 DOI: 10.1016/j.ymgme.2015.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 12/30/2022]
Abstract
Lysosomal storage diseases (LSDs) are caused by accumulation of partially degraded substrates within the lysosome, as a result of a function loss of a lysosomal protein. Recombinant lysosomal proteins are usually produced in mammalian cells, based on their capacity to carry out post-translational modifications similar to those observed in human native proteins. However, during the last years, a growing number of studies have shown the possibility to produce active forms of lysosomal proteins in other expression systems, such as plants and microorganisms. In this paper, we review the production and characterization of human lysosomal proteins, deficient in several LSDs, which have been produced in microorganisms. For this purpose, Escherichia coli, Saccharomyces cerevisiae, Pichia pastoris, Yarrowia lipolytica, and Ogataea minuta have been used as expression systems. The recombinant lysosomal proteins expressed in these hosts have shown similar substrate specificities, and temperature and pH stability profiles to those produced in mammalian cells. In addition, pre-clinical results have shown that recombinant lysosomal enzymes produced in microorganisms can be taken-up by cells and reduce the substrate accumulated within the lysosome. Recently, metabolic engineering in yeasts has allowed the production of lysosomal enzymes with tailored N-glycosylations, while progresses in E. coli N-glycosylations offer a potential platform to improve the production of these recombinant lysosomal enzymes. In summary, microorganisms represent convenient platform for the production of recombinant lysosomal proteins for biochemical and physicochemical characterization, as well as for the development of ERT for LSD.
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Affiliation(s)
- Ángela J Espejo-Mojica
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Carlos J Alméciga-Díaz
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia.
| | - Alexander Rodríguez
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia; Chemical Department, School of Science, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Ángela Mosquera
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Dennis Díaz
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Laura Beltrán
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Sergio Díaz
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Natalia Pimentel
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Jefferson Moreno
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Jhonnathan Sánchez
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Oscar F Sánchez
- School of Chemical Engineering, Purdue University, West Lafayette, IN, USA
| | - Henry Córdoba
- Chemical Department, School of Science, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Raúl A Poutou-Piñales
- Laboratorio de Biotecnología Molecular, Grupo de Biotecnología Ambiental e Industrial (GBAI), School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Luis A Barrera
- Institute for the Study of Inborn Errors of Metabolism, School of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
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12
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Martiniuk F, Reggi S, Tchou-Wong KM, Rom WN, Busconi M, Fogher C. Production of a functional human acid maltase in tobacco seeds: biochemical analysis, uptake by human GSDII cells, and in vivo studies in GAA knockout mice. Appl Biochem Biotechnol 2013; 171:916-26. [PMID: 23907679 PMCID: PMC4703872 DOI: 10.1007/s12010-013-0367-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 06/23/2013] [Indexed: 12/25/2022]
Abstract
Genetic deficiency of acid alpha glucosidase (GAA) results in glycogen storage disease type II (GSDII) or Pompe's disease. To investigate whether we could generate a functional recombinant human GAA enzyme (tobrhGAA) in tobacco seeds for future enzyme replacement therapy, we subcloned the human GAA cDNA into the plant expression plasmid-pBI101 under the control of the soybean β-conglycinin seed-specific promoter and biochemically analyzed the tobrhGAA. Tobacco seeds contain the metabolic machinery that is more compatible with mammalian glycosylation-phosphorylation and processing. We found the tobrhGAA to be enzymatically active was readily taken up by GSDII fibroblasts and in white blood cells from whole blood to reverse the defect. The tobrhGAA corrected the enzyme defect in tissues at 7 days after a single dose following intraperitoneal (IP) administration in GAA knockout (GAA(-/-)) mice. Additionally, we could purify the tobrhGAA since it bound tightly to the matrix of Sephadex G100 and can be eluted by competition with maltose. These data demonstrate indirectly that the tobrhGAA is fully functional, predominantly proteolytically cleaved and contains the minimal phosphorylation and mannose-6-phosphate residues essential for biological activity.
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Affiliation(s)
- Frank Martiniuk
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, New York University School of Medicine, New York, NY 10016, USA. iProDynamic Therapeutics, Inc, New York, NY 10128, USA
| | - Serena Reggi
- Plantechno Srl, Via Staffolo 60, 26041 Casalmaggiore, Italy
| | - Kam-Meng Tchou-Wong
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, NY, USA
| | - William N. Rom
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, New York University School of Medicine, New York, NY 10016, USA
| | - Matteo Busconi
- Università Cattolica S. Cuore, Via E. Parmense 84, 29100 Piacenza, Italy
| | - Corrado Fogher
- Plantechno Srl, Via Staffolo 60, 26041 Casalmaggiore, Italy
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13
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De Marchis F, Bellucci M, Pompa A. Traffic of human α-mannosidase in plant cells suggests the presence of a new endoplasmic reticulum-to-vacuole pathway without involving the Golgi complex. PLANT PHYSIOLOGY 2013; 161:1769-82. [PMID: 23449646 PMCID: PMC3613454 DOI: 10.1104/pp.113.214536] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 02/28/2013] [Indexed: 05/08/2023]
Abstract
The transport of secretory proteins from the endoplasmic reticulum to the vacuole requires sorting signals as well as specific transport mechanisms. This work is focused on the transport in transgenic tobacco (Nicotiana tabacum) plants of a human α-mannosidase, MAN2B1, which is a lysosomal enzyme involved in the turnover of N-linked glycoproteins and can be used in enzyme replacement therapy. Although ubiquitously expressed, α-mannosidases are targeted to lysosomes or vacuoles through different mechanisms according to the organisms in which these proteins are produced. In tobacco cells, MAN2B1 reaches the vacuole even in the absence of mannose-6-phosphate receptors, which are responsible for its transport in animal cells. We report that MAN2B1 is targeted to the vacuole without passing through the Golgi complex. In addition, a vacuolar targeting signal that is recognized in plant cells is located in the MAN2B1 amino-terminal region. Indeed, when this amino-terminal domain is removed, the protein is retained in the endoplasmic reticulum. Moreover, when this domain is added to a plant-secreted protein, the resulting fusion protein is partially redirected to the vacuole. These results strongly suggest the existence in plants of a new type of vacuolar traffic that can be used by leaf cells to transport vacuolar proteins.
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Affiliation(s)
- Francesca De Marchis
- Istituto di Genetica Vegetale, Consiglio Nazionale delle Ricerche, 06128 Perugia, Italy
| | - Michele Bellucci
- Istituto di Genetica Vegetale, Consiglio Nazionale delle Ricerche, 06128 Perugia, Italy
| | - Andrea Pompa
- Istituto di Genetica Vegetale, Consiglio Nazionale delle Ricerche, 06128 Perugia, Italy
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