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Barritt SA, DuBois-Coyne SE, Dibble CC. Coenzyme A biosynthesis: mechanisms of regulation, function and disease. Nat Metab 2024:10.1038/s42255-024-01059-y. [PMID: 38871981 DOI: 10.1038/s42255-024-01059-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 04/30/2024] [Indexed: 06/15/2024]
Abstract
The tricarboxylic acid cycle, nutrient oxidation, histone acetylation and synthesis of lipids, glycans and haem all require the cofactor coenzyme A (CoA). Although the sources and regulation of the acyl groups carried by CoA for these processes are heavily studied, a key underlying question is less often considered: how is production of CoA itself controlled? Here, we discuss the many cellular roles of CoA and the regulatory mechanisms that govern its biosynthesis from cysteine, ATP and the essential nutrient pantothenate (vitamin B5), or from salvaged precursors in mammals. Metabolite feedback and signalling mechanisms involving acetyl-CoA, other acyl-CoAs, acyl-carnitines, MYC, p53, PPARα, PINK1 and insulin- and growth factor-stimulated PI3K-AKT signalling regulate the vitamin B5 transporter SLC5A6/SMVT and CoA biosynthesis enzymes PANK1, PANK2, PANK3, PANK4 and COASY. We also discuss methods for measuring CoA-related metabolites, compounds that target CoA biosynthesis and diseases caused by mutations in pathway enzymes including types of cataracts, cardiomyopathy and neurodegeneration (PKAN and COPAN).
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Affiliation(s)
- Samuel A Barritt
- Department of Pathology, Cancer Research Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Sarah E DuBois-Coyne
- Department of Medicine, Department of Biological Chemistry and Molecular Pharmacology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Christian C Dibble
- Department of Pathology, Cancer Research Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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2
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Miallot R, Millet V, Galland F, Naquet P. The vitamin B5/coenzyme A axis: A target for immunomodulation? Eur J Immunol 2023; 53:e2350435. [PMID: 37482959 DOI: 10.1002/eji.202350435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/25/2023]
Abstract
Coenzyme A (CoA) serves as a vital cofactor in numerous enzymatic reactions involved in energy production, lipid metabolism, and synthesis of essential molecules. Dysregulation of CoA-dependent metabolic pathways can contribute to chronic diseases, such as inflammatory diseases, obesity, diabetes, cancer, and cardiovascular disorders. Additionally, CoA influences immune cell activation by modulating the metabolism of these cells, thereby affecting their proliferation, differentiation, and effector functions. Targeting CoA metabolism presents a promising avenue for therapeutic intervention, as it can potentially restore metabolic balance, mitigate chronic inflammation, and enhance immune cell function. This might ultimately improve the management and outcomes for these diseases. This review will more specifically focus on the contribution of pathways regulating the availability of the CoA precursor Vitamin B5/pantothenate in vivo and modulating the development of Th17-mediated inflammation, CD8-dependent anti-tumor immunity but also tissue repair processes in chronic inflammatory or degenerative diseases.
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3
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Coulet M, Lachkar S, Leduc M, Trombe M, Gouveia Z, Perez F, Kepp O, Kroemer G, Basmaciogullari S. Identification of Small Molecules Affecting the Secretion of Therapeutic Antibodies with the Retention Using Selective Hook (RUSH) System. Cells 2023; 12:1642. [PMID: 37371112 DOI: 10.3390/cells12121642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/12/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Unlocking cell secretion capacity is of paramount interest for the pharmaceutical industry focused on biologics. Here, we leveraged retention using a selective hook (RUSH) system for the identification of human osteosarcoma U2OS cell secretion modulators, through automated, high-throughput screening of small compound libraries. We created a U2OS cell line which co-expresses a variant of streptavidin addressed to the lumen-facing membrane of the endoplasmic reticulum (ER) and a recombinant anti-PD-L1 antibody. The heavy chain of the antibody was modified at its C-terminus, to which a furin cleavage site, a green fluorescent protein (GFP), and a streptavidin binding peptide (SBP) were added. We show that the U2OS cell line stably expresses the streptavidin hook and the recombinant antibody bait, which is retained in the ER through the streptavidin-SBP interaction. We further document that the addition of biotin to the culture medium triggers the antibody release from the ER, its trafficking through the Golgi where the GFP-SBP moiety is clipped off, and eventually its release in the extra cellular space, with specific antigen-binding properties. The use of this clone in screening campaigns led to the identification of lycorine as a secretion enhancer, and nigericin and tyrphostin AG-879 as secretion inhibitors. Altogether, our data support the utility of this approach for the identification of agents that could be used to improve recombinant production yields and also for a better understanding of the regulatory mechanism at work in the conventional secretion pathway.
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Affiliation(s)
- Mathilde Coulet
- Sanofi R&D, 94400 Vitry-sur-Seine, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, 94800 Villejuif, France
- Centre de Recherche des Cordeliers, Equipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, 75006 Paris, France
| | - Sylvie Lachkar
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, 94800 Villejuif, France
- Centre de Recherche des Cordeliers, Equipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, 75006 Paris, France
| | - Marion Leduc
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, 94800 Villejuif, France
- Centre de Recherche des Cordeliers, Equipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, 75006 Paris, France
| | | | - Zelia Gouveia
- Institut Curie, PSL Research University, Sorbonne Université, CNRS, UMR 144, 26 rue d'Ulm, 75005 Paris, France
| | - Franck Perez
- Institut Curie, PSL Research University, Sorbonne Université, CNRS, UMR 144, 26 rue d'Ulm, 75005 Paris, France
| | - Oliver Kepp
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, 94800 Villejuif, France
- Centre de Recherche des Cordeliers, Equipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, 75006 Paris, France
| | - Guido Kroemer
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, 94800 Villejuif, France
- Centre de Recherche des Cordeliers, Equipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, 75006 Paris, France
- Department of Biology, Institut du Cancer Paris CARPEM, Hôpital Européen Georges Pompidou, AP-HP, 75015 Paris, France
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4
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Ha TK, Òdena A, Karottki KJLC, Kim CL, Hefzi H, Lee GM, Faustrup Kildegaard H, Nielsen LK, Grav LM, Lewis NE. Enhancing CHO cell productivity through a dual selection system using Aspg and Gs in glutamine free medium. Biotechnol Bioeng 2023; 120:1159-1166. [PMID: 36562657 DOI: 10.1002/bit.28318] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 12/03/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
The dominant method for generating Chinese hamster ovary (CHO) cell lines that produce high titers of biotherapeutic proteins utilizes selectable markers such as dihydrofolate reductase (Dhfr) or glutamine synthetase (Gs), alongside inhibitory compounds like methotrexate or methionine sulfoximine, respectively. Recent work has shown the importance of asparaginase (Aspg) for growth in media lacking glutamine-the selection medium for Gs-based selection systems. We generated a Gs/Aspg double knockout CHO cell line and evaluated its utility as a novel dual selectable system via co-transfection of Gs-Enbrel and Aspg-Enbrel plasmids. Using the same selection conditions as the standard Gs system, the resulting cells from the Gs/Aspg dual selection showed substantially improved specific productivity and titer compared to the standard Gs selection method, however, with reduced growth rate and viability. Following adaptation in the selection medium, the cells improved viability and growth while still achieving ~5-fold higher specific productivity and ~3-fold higher titer than Gs selection alone. We anticipate that with further optimization of culture medium and selection conditions, this approach would serve as an effective addition to workflows for the industrial production of recombinant biotherapeutics.
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Affiliation(s)
- Tae Kwang Ha
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Andreu Òdena
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Karen Julie la Cour Karottki
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
- Departments of Pediatrics and Bioengineering, University of California, San Diego, California, USA
| | - Che Lin Kim
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Hooman Hefzi
- Departments of Pediatrics and Bioengineering, University of California, San Diego, California, USA
| | - Gyun Min Lee
- Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Helene Faustrup Kildegaard
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Lars K Nielsen
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
- ARC Training Centre for Biopharmaceutical Innovation Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland, Australia
| | - Lise Marie Grav
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Nathan E Lewis
- Departments of Pediatrics and Bioengineering, University of California, San Diego, California, USA
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Munteanu C, Berindean I, Mihai M, Pop B, Popa M, Muntean L, Petrescu O, Ona A. E, K, B5, B6, and B9 vitamins and their specific immunological effects evaluated by flow cytometry. Front Med (Lausanne) 2023; 9:1089476. [PMID: 36687400 PMCID: PMC9849766 DOI: 10.3389/fmed.2022.1089476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/12/2022] [Indexed: 01/07/2023] Open
Abstract
It has been proven that vitamins play an essential role in preventing certain diseases since ancient times. It is thus fruitless to approach the roles of vitamins without making reference to the techniques used in evaluating the effects of these micronutrients. Therefore, the aim of this paper was to summarize the immunological effects of E, K, B5, B6, and B9 vitamins evaluated by flow cytometry. Some of these significant effects were presented and discussed: (a) The role of vitamins E in the prevention and treatment of different types of cancer. (b) The properties of K vitamins in the development and maintenance of pheochromocytoma Cell Line 12 (PC12) cells in Parkinson's disease; (c) The improvement effect of vitamin B5 on the loss of bone mass in low estrogen conditions; (d) The anticancer role of vitamins B6. (e) The role of Vitamin B9 in the regulation of Treg cells. As such, the flow cytometry technique used to assess these properties is essential to evaluate the immunomodulatory effects of certain vitamins. The technique undergoes constant improvement which makes it possible to determine several parameters with a role in the modulation of the immune function and at the same time increase the accuracy of the methods that highlight them.
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Affiliation(s)
- Camelia Munteanu
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Ioana Berindean
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Mihaela Mihai
- Department of Transversal Competencies, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Bianca Pop
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Mihai Popa
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Leon Muntean
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Olivia Petrescu
- Department of Applied Modern Languages, Faculty of Letters, Babeş-Bolyai University, Cluj-Napoca, Romania
| | - Andreea Ona
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania,*Correspondence: Andreea Ona,
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Zhang H, Bian S, Xu Z, Gao M, Wang H, Zhang J, Zhang M, Ke Y, Wang W, Chen ZS, Xu H. The effect and mechanistic study of encequidar on reversing the resistance of SW620/AD300 cells to doxorubicin. Biochem Pharmacol 2022; 205:115258. [PMID: 36179932 DOI: 10.1016/j.bcp.2022.115258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 11/25/2022]
Abstract
Encequidar, a gut-specific P-glycoprotein (P-gp) inhibitor, makes oral paclitaxel possible, and has been used in clinical treatment of metastatic breast cancer, however, its pharmacological effect and mechanism of reversal of drug resistance in drug-resistant colon cancer cells SW620/AD300 are still unknown. Herein, we first synthesized encequidar and demonstrated that it could inhibit the transport activity of P-gp, reduced doxorubicin (DOX) efflux, enhanced DOX cytotoxicity and promoted tumor-apoptosis in SW620/AD300 cells. Metabolomic analysis of cell samples was performedusing liquid chromatography Q-Exactive mass spectrometer, the results of metabolite enrichment analysis and pathway analysis showed that the combination of encequidar and DOX could: i) significantly affect the citric acid cycle (TCA cycle) and reduce the energy supply required for P-gp to exert its transport activity; ii) affect the metabolism of glutathione, which is the main component of the anti-oxidative stress system, and reduce the ability of cells to resist oxidative stress; iii) increase the intracellular reactive oxygen species (ROS) production and enhance ROS-induced cell damage and lipid peroxidation, which in turn restore the sensitivity of drug-resistant cells to DOX. In conclusion, these results provide sufficient data support for the therapeutical application of the P-gp inhibitor encequidar to reverse MDR, and are of great significance to further understand the therapeutic advantages of encequidar in anti-tumor therapy and guide clinical rational drug use.
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Affiliation(s)
- Hang Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Shaopan Bian
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Zhihao Xu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Ming Gao
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Han Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Junwei Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Mingkun Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Yu Ke
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Weijia Wang
- Department of International Medical Services (IMS), Beijing Tiantan Hospital of Capital Medical University, Beijing, 100070, China.
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, St. John's University, Queens, New York, USA.
| | - Haiwei Xu
- Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, China.
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7
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Torres M, Hussain H, Dickson AJ. The secretory pathway - the key for unlocking the potential of Chinese hamster ovary cell factories for manufacturing therapeutic proteins. Crit Rev Biotechnol 2022; 43:628-645. [PMID: 35465810 DOI: 10.1080/07388551.2022.2047004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Mammalian cell factories (in particular the CHO cell system) have been crucial in the rise of biopharmaceuticals. Mammalian cells have compartmentalized organelles where intricate networks of proteins manufacture highly sophisticated biopharmaceuticals in a specialized production pipeline - the secretory pathway. In the bioproduction context, the secretory pathway functioning is key for the effectiveness of cell factories to manufacture these life-changing medicines. This review describes the molecular components and events involved in the secretory pathway, and provides a comprehensive summary of the intracellular steps limiting the production of therapeutic proteins as well as the achievements in engineering CHO cell secretory machinery. We also consider antibody-producing plasma cells (so called "professional" secretory cells) to explore the mechanisms underpinning their unique secretory function/features. Such understandings offer the potential to further enhancement of the current CHO cell production platforms for manufacturing next generation of biopharmaceuticals.
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Affiliation(s)
- Mauro Torres
- Manchester Institute of Biotechnology, Faculty of Science and Engineering, University of Manchester, Manchester, UK.,Department of Chemical Engineering and Analytical Science, Biochemical and Bioprocess Engineering Group, University of Manchester, Manchester, UK
| | - Hirra Hussain
- Manchester Institute of Biotechnology, Faculty of Science and Engineering, University of Manchester, Manchester, UK.,Department of Chemical Engineering and Analytical Science, Biochemical and Bioprocess Engineering Group, University of Manchester, Manchester, UK
| | - Alan J Dickson
- Manchester Institute of Biotechnology, Faculty of Science and Engineering, University of Manchester, Manchester, UK.,Department of Chemical Engineering and Analytical Science, Biochemical and Bioprocess Engineering Group, University of Manchester, Manchester, UK
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Bansal V, Chatterjee I. Association of Vitamins and Neurotransmitters: Understanding the Effect on Schizophrenia. NEUROCHEM J+ 2022. [DOI: 10.1134/s1819712422010032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Ma Y, Hu C, Yan W, Jiang H, Liu G. Lactobacillus pentosus Increases the Abundance of Akkermansia and Affects the Serum Metabolome to Alleviate DSS-Induced Colitis in a Murine Model. Front Cell Dev Biol 2020; 8:591408. [PMID: 33195257 PMCID: PMC7609924 DOI: 10.3389/fcell.2020.591408] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 09/22/2020] [Indexed: 12/28/2022] Open
Abstract
Lactobacillus pentosus has the beneficial function of regulating the host’s immune system and plays an indispensable role in intestinal health. The purpose of this study was to investigate the specific mechanism by which L. pentosus relieves dextran sulfate sodium (DSS) induced ulcerative colon inflammation. We randomly divided 24 mice into three groups, which were administered either a basic diet, drinking water with 2.5% DSS (DSS), or drinking water with 2.5% DSS and intragastric administration of L. pentosus (DSS + L. pentosus). DSS was added to the drinking water on days 8 to 12, and L. pentosus was administered on days 12 to 19. Serum was collected for metabolomic analysis, colon length and weight were measured, and colon contents were collected to detect microbial structural composition. Compared with the DSS group, the DSS + L. pentosus group had significantly higher levels of indolepyruvate and pantothenic acid in the serum and significantly lower levels of 3,4-dimethyl-5-pentyl-2-furannonanoic acid and 5-oxo-6-trans-leukotriene B4. Moreover, compared with the other two groups, the DSS + L. pentosus group had a significantly greater abundance of Akkermansia. The abundance of Akkermansia was positively correlated with indolepyruvate and pantothenic acid levels. Therefore, L. pentosus can interact with Akkermansia to increase its abundance in the intestinal tract. This results in the production of metabolites that are beneficial for the regulation of intestinal immunity, thereby alleviating DSS-induced ulcerative colon inflammation.
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Affiliation(s)
- Yong Ma
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Chao Hu
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Wenxin Yan
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Hongmei Jiang
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Gang Liu
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
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10
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Berger A, Le Fourn V, Masternak J, Regamey A, Bodenmann I, Girod P, Mermod N. Overexpression of transcription factor Foxa1 and target genes remediate therapeutic protein production bottlenecks in Chinese hamster ovary cells. Biotechnol Bioeng 2020; 117:1101-1116. [PMID: 31956982 PMCID: PMC7079004 DOI: 10.1002/bit.27274] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 12/27/2019] [Accepted: 01/12/2020] [Indexed: 12/13/2022]
Abstract
Despite extensive research conducted to increase protein production from Chinese hamster ovary (CHO) cells, cellular bottlenecks often remain, hindering high yields. In this study, a transcriptomic analysis led to the identification of 32 genes that are consistently upregulated in high producer clones and thus might mediate high productivity. Candidate genes were associated with functions such as signaling, protein folding, cytoskeleton organization, and cell survival. We focused on two engineering targets, Erp27, which binds unfolded proteins and the Erp57 disulfide isomerase in the endoplasmic reticulum, and Foxa1, a pioneering transcription factor involved in organ development. Erp27 moderate overexpression increased production of an easy-to-express antibody, whereas Erp27 and Erp57 co-overexpression increased cell density, viability, and the yield of difficult-to-express proteins. Foxa1 overexpression increased cell density, cell viability, and easy- and difficult-to-express protein yields, whereas it decreased reactive oxygen species late in fed-batch cultures. Foxa1 overexpression upregulated two other candidate genes that increased the production of difficult- and/or easy-to-express proteins, namely Ca3, involved in protecting cells from oxidative stress, and Tagap, involved in signaling and cytoskeleton remodeling. Overall, several genes allowing to overcome CHO cell bottlenecks were identified, including Foxa1, which mediated multiple favorable metabolic changes that improve therapeutic protein yields.
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Affiliation(s)
- Audrey Berger
- Department of Fundamental Microbiology, Institute of BiotechnologyUniversity of LausanneLausanneSwitzerland
- Present address: Laboratory of Microsystems LMIS4Ecole Polytechnique Fédérale de Lausanne (EPFL)LausanneSwitzerland
| | | | - Jacqueline Masternak
- Department of Fundamental Microbiology, Institute of BiotechnologyUniversity of LausanneLausanneSwitzerland
| | | | | | | | - Nicolas Mermod
- Department of Fundamental Microbiology, Institute of BiotechnologyUniversity of LausanneLausanneSwitzerland
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11
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Pourcel L, Buron F, Arib G, Le Fourn V, Regamey A, Bodenmann I, Girod P, Mermod N. Influence of cytoskeleton organization on recombinant protein expression by CHO cells. Biotechnol Bioeng 2020; 117:1117-1126. [PMID: 31956990 PMCID: PMC7079171 DOI: 10.1002/bit.27277] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 12/27/2019] [Accepted: 01/11/2020] [Indexed: 12/12/2022]
Abstract
In this study, we assessed the importance of cytoskeleton organization in the mammalian cells used to produce therapeutic proteins. Two cytoskeletal genes, Actin alpha cardiac muscle 1 (ACTC1) and a guanosine triphosphate GTPase-activating protein (TAGAP), were found to be upregulated in highly productive therapeutic protein-expressing Chinese hamster ovary (CHO) cells selected by the deprivation of vitamin B5. We report here that the overexpression of the ACTC1 protein was able to improve significantly recombinant therapeutic production, as well as to decrease the levels of toxic lactate metabolic by-products. ACTC1 overexpression was accompanied by altered as well as decreased polymerized actin, which was associated with high protein production by CHO cell cultured in suspension. We suggest that the depolymerization of actin and the possible modulation of integrin signaling, as well as changes in basal metabolism, may be driving the increase of protein secretion by CHO cells.
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Affiliation(s)
- Lucille Pourcel
- Department of Fundamental Microbiology, Institute of BiotechnologyUniversity of LausanneLausanneSwitzerland
| | - Flavien Buron
- Department of Fundamental Microbiology, Institute of BiotechnologyUniversity of LausanneLausanneSwitzerland
| | | | | | | | | | | | - Nicolas Mermod
- Department of Fundamental Microbiology, Institute of BiotechnologyUniversity of LausanneLausanneSwitzerland
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