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Hassan LF, Sen R, O'Shea TM. Trehalose-based coacervates for local bioactive protein delivery to the central nervous system. Biomaterials 2024; 309:122594. [PMID: 38701641 DOI: 10.1016/j.biomaterials.2024.122594] [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: 10/16/2023] [Revised: 03/30/2024] [Accepted: 04/25/2024] [Indexed: 05/05/2024]
Abstract
Therapeutic outcomes of local biomolecule delivery to the central nervous system (CNS) using bulk biomaterials are limited by inadequate drug loading, neuropil disruption, and severe foreign body responses. Effective CNS delivery requires addressing these issues and developing well-tolerated, highly-loaded carriers that are dispersible within local neural parenchyma. Here, we synthesized biodegradable trehalose-based polyelectrolyte oligomers using facile A2:B3:AR thiol-ene Michael addition reactions that form complex coacervates upon mixing of oppositely charged oligomers. Coacervates permit high concentration loading and controlled release of bioactive growth factors, enzymes, and antibodies, with modular formulation parameters that confer tunable release kinetics. Coacervates are cytocompatible with cultured neural cells in vitro and can be formulated to either direct intracellular protein delivery or sequester media containing proteins and remain extracellular. Coacervates serve as effective vehicles for precisely delivering biomolecules, including bioactive neurotrophins, to the mouse striatum following intraparenchymal injection. These results support the use of trehalose-based coacervates as part of therapeutic protein delivery strategies for CNS disorders.
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Affiliation(s)
- Laboni F Hassan
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215-2407, USA
| | - Riya Sen
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215-2407, USA
| | - Timothy M O'Shea
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215-2407, USA.
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2
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Wang F, Bi J, Wang J, Lyu J. Textural formation of instant controlled pressure drop-dried peach chips: Investigation of the electrical, thermal, and textural properties of predried peach slices with osmotic dehydration pretreatment. Food Chem 2024; 450:139394. [PMID: 38653058 DOI: 10.1016/j.foodchem.2024.139394] [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: 10/24/2023] [Revised: 04/03/2024] [Accepted: 04/14/2024] [Indexed: 04/25/2024]
Abstract
In this study, the effect of osmotic dehydration (OD) pretreatment with various sugar (erythritol, glucose, and trehalose) on the quality of hot-air-predried peach slices was investigated, particularly focusing on electrical properties, texture, thermal stability, and cell wall strength. Furthermore, the correlation between the properties of predried peach slices and the texture of the instant controlled pressure drop (DIC) dried peach chips was explored. OD pretreatments improved the stability and integrity of the cell wall and cell membrane of pre-dried peach slices, which inhibited the excessive expansion of samples during DIC drying. Especially, peach chips with trehalose-OD exhibited the highest crispiness (1.05 mm), the highest hardness (101.34 N) was obtained in erythritol-OD samples. Overall, the type of osmotic agents affected the texture of DIC peach chips with OD pretreatments. It should be noted that trehalose is a promising osmotic agent for controlling and regulating the quality of DIC peach chips.
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Affiliation(s)
- Fengzhao Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China; College of Food Science, Shenyang Agricultural University, Shenyang 110866, China
| | - Jinfeng Bi
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China; College of Food Science, Shenyang Agricultural University, Shenyang 110866, China.
| | - Jingxuan Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China; College of Food Science, Shenyang Agricultural University, Shenyang 110866, China
| | - Jian Lyu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China.
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3
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Robison ZL, Ren Q, Zhang Z. How to Survive without Water: A Short Lesson on the Desiccation Tolerance of Budding Yeast. Int J Mol Sci 2024; 25:7514. [PMID: 39062766 PMCID: PMC11277543 DOI: 10.3390/ijms25147514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 07/03/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
Water is essential to all life on earth. It is a major component that makes up living organisms and plays a vital role in multiple biological processes. It provides a medium for chemical and enzymatic reactions in the cell and is a major player in osmoregulation and the maintenance of cell turgidity. Despite this, many organisms, called anhydrobiotes, are capable of surviving under extremely dehydrated conditions. Less is known about how anhydrobiotes adapt and survive under desiccation stress. Studies have shown that morphological and physiological changes occur in anhydrobiotes in response to desiccation stress. Certain disaccharides and proteins, including heat shock proteins, intrinsically disordered proteins, and hydrophilins, play important roles in the desiccation tolerance of anhydrobiotes. In this review, we summarize the recent findings of desiccation tolerance in the budding yeast Saccharomyces cerevisiae. We also propose that the yeast under desiccation could be used as a model to study neurodegenerative disorders.
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Affiliation(s)
| | | | - Zhaojie Zhang
- Department of Zoology and Physiology, University of Wyoming, Laramie, WY 82071, USA; (Z.L.R.); (Q.R.)
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4
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Lupi L, Gallo P. Mode coupling behavior and fragile to strong transition of trehalose in a binary mixture with water upon supercooling. J Chem Phys 2024; 160:244501. [PMID: 38912627 DOI: 10.1063/5.0218369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 06/06/2024] [Indexed: 06/25/2024] Open
Abstract
We perform molecular dynamics simulations of a binary mixture of water and trehalose with the TIP4P/Ice water model. We analyze the slow dynamics of trehalose molecules in the mildly supercooled region for concentrations of 3.66 and 18.57 wt. %. We previously studied the dynamics of water in the same mixtures. Supercooled TIP4P/Ice water solvating trehalose molecules was found to follow the Mode Coupling Theory (MCT) and to undergo a transition from a fragile to a strong behavior for both concentrations. Here, we show that also the dynamics of trehalose molecules follows the MCT and displays a fragile to strong crossover (FSC). The results show that trehalose in binary mixtures with water shares with it the dynamical behavior typical of glass forming liquids. Moreover, the FSC for trehalose structural relaxation times is found to occur at temperatures close to those previously obtained for water in the same solutions, showing that the dynamics of the solute is strongly coupled to that of the solvent. We also perform a MCT test showing that the trehalose dynamics obeys the MCT time-temperature superposition principle and that the exponents derived from the theory and the ones obtained from fitting procedure of the relaxation times are comparable, confirming that trehalose molecules in supercooled water solutions follow the MCT of glassy dynamics. Moreover, as predicted by the theory, trehalose particles have MCT parameters comparable to those of water in the same mixtures. This is an important result, given that MCT was originally formulated for monoatomic particles.
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Affiliation(s)
- Laura Lupi
- Dipartimento di Matematica e Fisica, Università Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Paola Gallo
- Dipartimento di Matematica e Fisica, Università Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy
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Iorio A, Perin L, Gallo P. Structure and slow dynamics of protein hydration water with cryopreserving DMSO and trehalose upon cooling. J Chem Phys 2024; 160:244502. [PMID: 38912631 DOI: 10.1063/5.0205569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 06/05/2024] [Indexed: 06/25/2024] Open
Abstract
We study, through molecular dynamics simulations, three aqueous solutions with one lysozyme protein and three different concentrations of trehalose and dimethyl sulfoxide (DMSO). We analyze the structural and dynamical properties of the protein hydration water upon cooling. We find that trehalose plays a major role in modifying the structure of the network of HBs between water molecules in the hydration layer of the protein. The dynamics of hydration water presents, in addition to the α-relaxation, typical of glass formers, a slower long-time relaxation process, which greatly slows down the dynamics of water, particularly in the systems with trehalose, where it becomes dominant at low temperatures. In all the solutions, we observe, from the behavior of the α-relaxation times, a shift of the Mode Coupling Theory crossover temperature and the fragile-to-strong crossover temperature toward higher values with respect to bulk water. We also observe a strong-to-strong crossover from the temperature behavior of the long-relaxation times. In the aqueous solution with only DMSO, the transition shifts to a lower temperature than in the case with only lysozyme reported in the literature. We observe that the addition of trehalose to the mixture has the opposite effect of restoring the original location of the strong-to-strong crossover. In all the solutions analyzed in this work, the observed temperature of the protein dynamical transition is slightly shifted at lower temperatures than that of the strong-to-strong crossover, but their relative order is the same, showing a correlation between the motion of the protein and that of the hydration water.
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Affiliation(s)
- Antonio Iorio
- Dipartimento di Fisica, Università Roma Tre, Via della Vasca Navale 84, I-00146 Roma, Italy
| | - Leonardo Perin
- Dipartimento di Fisica, Università Roma Tre, Via della Vasca Navale 84, I-00146 Roma, Italy
| | - Paola Gallo
- Dipartimento di Fisica, Università Roma Tre, Via della Vasca Navale 84, I-00146 Roma, Italy
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Sakai K, Kondo Y, Goto Y, Aoki K. Cytoplasmic fluidization contributes to breaking spore dormancy in fission yeast. Proc Natl Acad Sci U S A 2024; 121:e2405553121. [PMID: 38889144 PMCID: PMC11214080 DOI: 10.1073/pnas.2405553121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 05/09/2024] [Indexed: 06/20/2024] Open
Abstract
The cytoplasm is a complex, crowded environment that influences myriad cellular processes including protein folding and metabolic reactions. Recent studies have suggested that changes in the biophysical properties of the cytoplasm play a key role in cellular homeostasis and adaptation. However, it still remains unclear how cells control their cytoplasmic properties in response to environmental cues. Here, we used fission yeast spores as a model system of dormant cells to elucidate the mechanisms underlying regulation of the cytoplasmic properties. By tracking fluorescent tracer particles, we found that particle mobility decreased in spores compared to vegetative cells and rapidly increased at the onset of dormancy breaking upon glucose addition. This cytoplasmic fluidization depended on glucose-sensing via the cyclic adenosine monophosphate-protein kinase A pathway. PKA activation led to trehalose degradation through trehalase Ntp1, thereby increasing particle mobility as the amount of trehalose decreased. In contrast, the rapid cytoplasmic fluidization did not require de novo protein synthesis, cytoskeletal dynamics, or cell volume increase. Furthermore, the measurement of diffusion coefficients with tracer particles of different sizes suggests that the spore cytoplasm impedes the movement of larger protein complexes (40 to 150 nm) such as ribosomes, while allowing free diffusion of smaller molecules (~3 nm) such as second messengers and signaling proteins. Our experiments have thus uncovered a series of signaling events that enable cells to quickly fluidize the cytoplasm at the onset of dormancy breaking.
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Affiliation(s)
- Keiichiro Sakai
- Quantitative Biology Research Group, Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Myodaiji-cho, Okazaki, Aichi444-8787, Japan
- Division of Quantitative Biology, National Institute for Basic Biology, National Institutes of Natural Sciences, Myodaiji-cho, Okazaki, Aichi444-8787, Japan
| | - Yohei Kondo
- Quantitative Biology Research Group, Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Myodaiji-cho, Okazaki, Aichi444-8787, Japan
- Division of Quantitative Biology, National Institute for Basic Biology, National Institutes of Natural Sciences, Myodaiji-cho, Okazaki, Aichi444-8787, Japan
- Department of Basic Biology, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), Myodaiji-cho, Okazaki, Aichi444-8787, Japan
- Division of Integrated Life Science, Department of Gene Mechanisms, Laboratory of Cell Cycle Regulation, Graduate School of Biostudies, Kyoto University, Kyoto606-8315, Japan
- Center for Living Systems Information Science, Graduate School of Biostudies, Kyoto University, Kyoto606-8315, Japan
| | - Yuhei Goto
- Quantitative Biology Research Group, Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Myodaiji-cho, Okazaki, Aichi444-8787, Japan
- Division of Quantitative Biology, National Institute for Basic Biology, National Institutes of Natural Sciences, Myodaiji-cho, Okazaki, Aichi444-8787, Japan
- Department of Basic Biology, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), Myodaiji-cho, Okazaki, Aichi444-8787, Japan
- Division of Integrated Life Science, Department of Gene Mechanisms, Laboratory of Cell Cycle Regulation, Graduate School of Biostudies, Kyoto University, Kyoto606-8315, Japan
- Center for Living Systems Information Science, Graduate School of Biostudies, Kyoto University, Kyoto606-8315, Japan
| | - Kazuhiro Aoki
- Quantitative Biology Research Group, Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Myodaiji-cho, Okazaki, Aichi444-8787, Japan
- Division of Quantitative Biology, National Institute for Basic Biology, National Institutes of Natural Sciences, Myodaiji-cho, Okazaki, Aichi444-8787, Japan
- Department of Basic Biology, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), Myodaiji-cho, Okazaki, Aichi444-8787, Japan
- Division of Integrated Life Science, Department of Gene Mechanisms, Laboratory of Cell Cycle Regulation, Graduate School of Biostudies, Kyoto University, Kyoto606-8315, Japan
- Center for Living Systems Information Science, Graduate School of Biostudies, Kyoto University, Kyoto606-8315, Japan
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Lampitella EA, Marone M, Achanta NSK, Porzio E, Trepiccione F, Manco G. The Human Paraoxonase 2: An Optimized Procedure for Refolding and Stabilization Facilitates Enzyme Analyses and a Proteomics Approach. Molecules 2024; 29:2434. [PMID: 38893310 PMCID: PMC11173892 DOI: 10.3390/molecules29112434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 05/16/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
The human paraoxonase 2 (PON2) is the oldest member of a small family of arylesterase and lactonase enzymes, representing the first line of defense against bacterial infections and having a major role in ROS-associated diseases such as cancer, cardiovascular diseases, neurodegeneration, and diabetes. Specific Post-Translational Modifications (PTMs) clustering nearby two residues corresponding to pon2 polymorphic sites and their impact on the catalytic activity are not yet fully understood. Thus, the goal of the present study was to develop an improved PON2 purification protocol to obtain a higher amount of protein suitable for in-depth biochemical studies and biotechnological applications. To this end, we also tested several compounds to stabilize the active monomeric form of the enzyme. Storing the enzyme at 4 °C with 30 mM Threalose had the best impact on the activity, which was preserved for at least 30 days. The catalytic parameters against the substrate 3-Oxo-dodecanoyl-Homoserine Lactone (3oxoC12-HSL) and the enzyme ability to interfere with the biofilm formation of Pseudomonas aeruginosa (PAO1) were determined, showing that the obtained enzyme is well suited for downstream applications. Finally, we used the purified rPON2 to detect, by the direct molecular fishing (DMF) method, new putative PON2 interactors from soluble extracts of HeLa cells.
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Affiliation(s)
- Eros A. Lampitella
- Institute of Biochemistry and Cell Biology-CNR, Via Pietro Castellino 111, 80131 Naples, Italy; (E.A.L.); (M.M.); (N.S.K.A.); (E.P.)
| | - Maria Marone
- Institute of Biochemistry and Cell Biology-CNR, Via Pietro Castellino 111, 80131 Naples, Italy; (E.A.L.); (M.M.); (N.S.K.A.); (E.P.)
| | - Nagendra S. K. Achanta
- Institute of Biochemistry and Cell Biology-CNR, Via Pietro Castellino 111, 80131 Naples, Italy; (E.A.L.); (M.M.); (N.S.K.A.); (E.P.)
| | - Elena Porzio
- Institute of Biochemistry and Cell Biology-CNR, Via Pietro Castellino 111, 80131 Naples, Italy; (E.A.L.); (M.M.); (N.S.K.A.); (E.P.)
| | - Francesco Trepiccione
- Department of Translational Medical Science, University of Campania “Luigi Vanvitelli”, Via Leonardo Bianchi c/o Ospedale Monaldi, 80131 Naples, Italy;
| | - Giuseppe Manco
- Institute of Biochemistry and Cell Biology-CNR, Via Pietro Castellino 111, 80131 Naples, Italy; (E.A.L.); (M.M.); (N.S.K.A.); (E.P.)
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8
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Klymiuk MC, Balz N, Elashry MI, Wenisch S, Arnhold S. Effect of storage conditions on the quality of equine and canine mesenchymal stem cell derived nanoparticles including extracellular vesicles for research and therapy. DISCOVER NANO 2024; 19:80. [PMID: 38700790 PMCID: PMC11068712 DOI: 10.1186/s11671-024-04026-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 04/28/2024] [Indexed: 05/06/2024]
Abstract
Nanoparticles including extracellular vesicles derived from mesenchymal stem cells are of increasing interest for research and clinical use in regenerative medicine. Extracellular vesicles (EVs), including also previously named exosomes, provide a promising cell-free tool for therapeutic applications, which is probably a safer approach to achieve sufficient healing. Storage of EVs may be necessary for clinical applications as well as for further experiments, as the preparation is sometimes laborious and larger quantities tend to be gained. For this purpose, nanoparticles were obtained from mesenchymal stem cells from adipose tissue (AdMSC) of horses and dogs. The EVs were then stored for 7 days under different conditions (- 20 °C, 4 °C, 37 °C) and with the addition of various additives (5 mM EDTA, 25-250 µM trehalose). Afterwards, the size and number of EVs was determined using the nano tracking analyzing method. With our investigations, we were able to show that storage of EVs for up to 7 days at 4 °C does not require the addition of supplements. For the other storage conditions, in particular freezing and storage at room temperature, the addition of EDTA was found to be suitable for preventing aggregation of the particles. Contrary to previous publications, trehalose seems not to be a suitable cryoprotectant for AdMSC-derived EVs. The data are useful for processing and storage of isolated EVs for further experiments or clinical approaches in veterinary medicine.
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Affiliation(s)
- Michele Christian Klymiuk
- Institute of Veterinary-Anatomy, -Histology and -Embryology, Faculty of Veterinary Medicine, Justus-Liebig-University Giessen, Frankfurter Strasse 98, 35392, Giessen, Germany.
| | - Natalie Balz
- Institute of Veterinary-Anatomy, -Histology and -Embryology, Faculty of Veterinary Medicine, Justus-Liebig-University Giessen, Frankfurter Strasse 98, 35392, Giessen, Germany
| | - Mohamed I Elashry
- Institute of Veterinary-Anatomy, -Histology and -Embryology, Faculty of Veterinary Medicine, Justus-Liebig-University Giessen, Frankfurter Strasse 98, 35392, Giessen, Germany
| | - Sabine Wenisch
- Clinic of Small Animals, c/o Institute of Veterinary-Anatomy, -Histology and -Embryology, Faculty of Veterinary Medicine, Justus-Liebig-University Giessen, Frankfurter Strasse 98, 35392, Giessen, Germany
| | - Stefan Arnhold
- Institute of Veterinary-Anatomy, -Histology and -Embryology, Faculty of Veterinary Medicine, Justus-Liebig-University Giessen, Frankfurter Strasse 98, 35392, Giessen, Germany
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9
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Zhang B, Hou Z, Yan B, Zhao Y, Peng B, Qian S, Li K, Su B, Zhang C. Trehalose and its dihydrate: terahertz insights from solid to solution states. BIOMEDICAL OPTICS EXPRESS 2024; 15:3037-3049. [PMID: 38855704 PMCID: PMC11161380 DOI: 10.1364/boe.519006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/13/2024] [Accepted: 03/27/2024] [Indexed: 06/11/2024]
Abstract
Carbohydrates are pivotal biomolecules in biochemistry; this study employs terahertz time-domain spectroscopy (THz-TDS) to investigate the spectral characteristics of trehalose and its hydrate across the 0.1 to 2.2 THz frequency range. Notable differences in spectra between the two compounds were observed. Density Functional Theory (DFT) simulations of the crystal structure were conducted to elucidate this phenomenon. The consistency between experimental results and simulations substantiates the reliability of the experimental findings. Additionally, the spectral characteristics of these carbohydrates in solution were examined using microfluidic chip technology. This approach facilitates a comprehensive comparison of their behaviors in both solid and solution states.
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Affiliation(s)
- Boyan Zhang
- Department of Physics, Capital Normal University, Beijing 100048, China
- Beijing Advanced Innovation Centre for Imaging Theory and Technology, Beijing 100048, China
- Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Beijing 100048, China
- Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
| | - Zeyu Hou
- Department of Physics, Capital Normal University, Beijing 100048, China
- Beijing Advanced Innovation Centre for Imaging Theory and Technology, Beijing 100048, China
- Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Beijing 100048, China
- Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
| | - Bingxin Yan
- Department of Physics, Capital Normal University, Beijing 100048, China
- Beijing Advanced Innovation Centre for Imaging Theory and Technology, Beijing 100048, China
- Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Beijing 100048, China
- Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
| | - Yuhan Zhao
- Department of Physics, Capital Normal University, Beijing 100048, China
- Beijing Advanced Innovation Centre for Imaging Theory and Technology, Beijing 100048, China
- Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Beijing 100048, China
- Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
| | - Bo Peng
- Department of Physics, Capital Normal University, Beijing 100048, China
- Beijing Advanced Innovation Centre for Imaging Theory and Technology, Beijing 100048, China
- Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Beijing 100048, China
- Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
| | - Siyu Qian
- Department of Physics, Capital Normal University, Beijing 100048, China
- Beijing Advanced Innovation Centre for Imaging Theory and Technology, Beijing 100048, China
- Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Beijing 100048, China
- Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
| | - Kai Li
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Bo Su
- Department of Physics, Capital Normal University, Beijing 100048, China
- Beijing Advanced Innovation Centre for Imaging Theory and Technology, Beijing 100048, China
- Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Beijing 100048, China
- Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
| | - Cunlin Zhang
- Department of Physics, Capital Normal University, Beijing 100048, China
- Beijing Advanced Innovation Centre for Imaging Theory and Technology, Beijing 100048, China
- Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Beijing 100048, China
- Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
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10
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Kuczyńska-Wiśnik D, Stojowska-Swędrzyńska K, Laskowska E. Intracellular Protective Functions and Therapeutical Potential of Trehalose. Molecules 2024; 29:2088. [PMID: 38731579 PMCID: PMC11085779 DOI: 10.3390/molecules29092088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 04/28/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
Trehalose is a naturally occurring, non-reducing saccharide widely distributed in nature. Over the years, research on trehalose has revealed that this initially thought simple storage molecule is a multifunctional and multitasking compound protecting cells against various stress factors. This review presents data on the role of trehalose in maintaining cellular homeostasis under stress conditions and in the virulence of bacteria and fungi. Numerous studies have demonstrated that trehalose acts in the cell as an osmoprotectant, chemical chaperone, free radical scavenger, carbon source, virulence factor, and metabolic regulator. The increasingly researched medical and therapeutic applications of trehalose are also discussed.
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Affiliation(s)
| | | | - Ewa Laskowska
- Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland; (D.K.-W.); (K.S.-S.)
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11
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Zhang S, Yin H, Zhang Y, Zhu Y, Zhu X, Zhu W, Tang L, Liu Y, Wu K, Zhao B, Tian Y, Lu H. Autophagic-lysosomal damage induced by swainsonine is protected by trehalose through activation of TFEB-regulated pathway in renal tubular epithelial cells. Chem Biol Interact 2024; 394:110990. [PMID: 38579922 DOI: 10.1016/j.cbi.2024.110990] [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: 11/10/2023] [Revised: 03/19/2024] [Accepted: 04/02/2024] [Indexed: 04/07/2024]
Abstract
Swainsonine (SW) is the main toxic component of locoweed. Previous studies have shown that kidney damage is an early pathologic change in locoweed poisoning in animals. Trehalose induces autophagy and alleviates lysosomal damage, while its protective effect and mechanism against the toxic injury induced by SW is not clear. Based on the published literature, we hypothesize that transcription factor EB(TFEB) -regulated is targeted by SW and activating TFEB by trehalose would reverse the toxic effects. In this study, we investigate the mechanism of protective effects of trehalose using renal tubular epithelial cells. The results showed that SW induced an increase in the expression level of microtubule-associated protein light chain 3-II and p62 proteins and a decrease in the expression level of ATPase H+ transporting V1 Subunit A, Cathepsin B, Cathepsin D, lysosome-associated membrane protein 2 and TFEB proteins in renal tubular epithelial cells in a time and dose-dependent manner suggesting TFEB-regulated lysosomal pathway is adversely affected by SW. Conversely, treatment with trehalose, a known activator of TFEB promote TFEB nuclear translocation suggesting that TFEB plays an important role in protection against SW toxicity. We demonstrated in lysosome staining that SW reduced the number of lysosomes and increased the luminal pH, while trehalose could counteract these SW-induced effects. In summary, our results demonstrated for the first time that trehalose could alleviate the autophagy degradation disorder and lysosomal damage induced by SW. Our results provide an interesting method for reversion of SW-induced toxicity in farm animals and furthermore, activation of TFEB by trehalose suggesting novel mechanism of treating lysosomal storage diseases.
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Affiliation(s)
- Shuhang Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Hai Yin
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yiqingqing Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yanli Zhu
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xueyao Zhu
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Wenting Zhu
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Lihui Tang
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yiling Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Kexin Wu
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Baoyu Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yanan Tian
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine, Texas A&M University, College Station, TX, 77843, USA
| | - Hao Lu
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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12
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Yamazaki S, Shirata I, Mizuno M, Amano Y. Promotion of Thermal Inactivation Treatment of Apple Polyphenol Oxidase in the Presence of Trehalose. J Appl Glycosci (1999) 2024; 71:1-7. [PMID: 38799413 PMCID: PMC11116086 DOI: 10.5458/jag.jag.jag-2023_0009] [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: 09/04/2023] [Accepted: 11/07/2023] [Indexed: 05/29/2024] Open
Abstract
Trehalose is known to protect enzymes from denaturation. In the present study, we observed promotion of apple polyphenol oxidase (PPO) inactivation in a trehalose solution with thermal treatment. Crude PPO from Fuji apple was mixed with either sucrose or trehalose solutions, then the samples treated at 25 or 65 °C. In the presence of trehalose, PPO activities were markedly decreased upon treatment at 65 °C with increasing trehalose concentration. Furthermore, the reduction in PPO activity in the presence of trehalose was proportional to storage time after thermal treatment and thermal treatment time. Comparing PPO activities between treatment time 0 and 90 min at 65 °C, activities decreased 89 % for trehalose concentration of 0.2 M. These results indicates that trehalose acts not only as inhibitor but as promoter of inactivation of PPO. The Lineweaver-Burk plot indicated that trehalose acts on PPO as a non-competitive inhibitor during the 65 °C treatment. Two mechanisms of PPO inactivation in the presence of trehalose were suggested; one is the suppression of PPO activation cause by a thermal treatment, and another is the conformational change to inactivation form of PPO in conjunction with trehalose and a thermal treatment. Additionally, apple juice including 0.2 or 0.5 M trehalose with 65 °C treatment indicated slow browning than the juice with 0.2 or 0.5 M sucrose or without sugars. This result demonstrates that the preventing of browning with trehalose is a viable industrial food process.
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Affiliation(s)
- Shinya Yamazaki
- Food Technology Department, Nagano Prefecture General Industrial Technology Center
- Graduate School of Medicine, Science and Technology, Department of Biomedical Engineering, Shinshu University
| | - Ibuki Shirata
- Graduate School of Medicine, Science and Technology, Department of Biomedical Engineering, Shinshu University
| | - Masahiro Mizuno
- Graduate School of Medicine, Science and Technology, Department of Biomedical Engineering, Shinshu University
| | - Yoshihiko Amano
- Graduate School of Medicine, Science and Technology, Department of Biomedical Engineering, Shinshu University
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13
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Lai S, Wu T, Shi C, Wang X, Liu P, Wang L, Yu H. Triple-layered core-shell fiber dressings with enduring platelet conservation and sustained growth factor release abilities for chronic wound healing. Regen Biomater 2024; 11:rbae034. [PMID: 38601330 PMCID: PMC11004556 DOI: 10.1093/rb/rbae034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/08/2024] [Accepted: 03/12/2024] [Indexed: 04/12/2024] Open
Abstract
Platelet-rich plasma (PRP) is one of the most popular biomaterials in regenerative medicine. However, the difficulties encountered in its preservation, and the requirement for on-demand preparation severely limit its application. In addition, its rapid degradation in the wound microenvironment makes the sustained release of growth factors impossible and finally reduces the therapeutic effect on chronic wounds. Here, a multifunctional dressing based on triple-layered core-shell fibers for loading and enduring preservation of PRP was developed using a one-step coaxial bioprinting technique combined with freeze-drying. The platelets were effectively dispersed and immobilized in the core layer of the fiber, leading to a sustained release of growth factors from the PRP. The rate of release can be controlled by adjusting the triple-layered core-shell structure. Simultaneously, the triple-layered core-shell structure can reduce the deactivation of PRP during freezing and storage. The experimental findings suggest that PRP exhibits sustained activity, facilitating the process of wound healing even after a storage period of 180 days. Furthermore, the protective mechanism of PRP by the triple-layered core-shell fiber was investigated, and the conditions for freeze-drying and storage were optimized, further enhancing the long-term storability of PRP. As a result, the multifunctional core-shell fiber dressings developed in this study offer a novel approach for sustained growth factor release and the enduring preservation of active PRP.
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Affiliation(s)
- Simin Lai
- Guangdong–Hong Kong Joint Laboratory for New Textile Materials, School of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
| | - Tingbin Wu
- Guangdong–Hong Kong Joint Laboratory for New Textile Materials, School of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
| | - Chenxi Shi
- Guangdong–Hong Kong Joint Laboratory for New Textile Materials, School of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
| | | | - Pengbi Liu
- Guangdong–Hong Kong Joint Laboratory for New Textile Materials, School of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
| | - Lihuan Wang
- Guangdong–Hong Kong Joint Laboratory for New Textile Materials, School of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
| | - Hui Yu
- Guangdong–Hong Kong Joint Laboratory for New Textile Materials, School of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
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14
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Kang D, Yang MJ, Kim H, Park C. Protective roles of highly conserved motif 1 in tardigrade cytosolic-abundant heat soluble protein in extreme environments. Protein Sci 2024; 33:e4913. [PMID: 38358259 PMCID: PMC10868442 DOI: 10.1002/pro.4913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 01/09/2024] [Accepted: 01/16/2024] [Indexed: 02/16/2024]
Abstract
Tardigrades are remarkable microscopic animals that survive harsh conditions such as desiccation and extreme temperatures. Tardigrade-specific intrinsically disordered proteins (TDPs) play an essential role in the survival of tardigrades in extreme environments. Cytosolic-abundant heat soluble (CAHS) protein, a key TDP, is known to increase desiccation tolerance and to protect the activity of several enzymes under dehydrated conditions. However, the function and properties of each CAHS domain have not yet been elucidated in detail. Here, we aimed to elucidate the protective role of highly conserved motif 1 of CAHS in extreme environmental conditions. To examine CAHS domains, three protein constructs, CAHS Full (1-229), CAHS ∆Core (1-120_184-229), and CAHS Core (121-183), were engineered. The highly conserved CAHS motif 1 (124-142) in the CAHS Core formed an amphiphilic α helix, reducing the aggregate formation and protecting lactate dehydrogenase activity during dehydration-rehydration and freeze-thaw treatments, indicating that CAHS motif 1 in the CAHS Core was essential for maintaining protein solubility and stability. Aggregation assays and confocal microscopy revealed that the intrinsically disordered N- and C-terminal domains were more prone to aggregation under our experimental conditions. By explicating the functions of each domain in CAHS, our study proposes the possibility of using engineered proteins or peptides derived from CAHS as a potential candidate for biological applications in extreme environmental stress responses.
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Affiliation(s)
- Donguk Kang
- Department of ChemistryGwangju Institute of Science and TechnologyGwangjuRepublic of Korea
| | - Min June Yang
- Department of ChemistryGwangju Institute of Science and TechnologyGwangjuRepublic of Korea
| | - Hwan Kim
- GIST Advanced Institute of Instrumental Analysis (GAIA), Bio Imaging LaboratoryGwangju Institute of Science and TechnologyGwangjuRepublic of Korea
| | - Chin‐Ju Park
- Department of ChemistryGwangju Institute of Science and TechnologyGwangjuRepublic of Korea
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15
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Mühlhofer M, Offensperger F, Reschke S, Wallmann G, Csaba G, Berchtold E, Riedl M, Blum H, Haslbeck M, Zimmer R, Buchner J. Deletion of the transcription factors Hsf1, Msn2 and Msn4 in yeast uncovers transcriptional reprogramming in response to proteotoxic stress. FEBS Lett 2024; 598:635-657. [PMID: 38366111 DOI: 10.1002/1873-3468.14821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/15/2024] [Accepted: 01/18/2024] [Indexed: 02/18/2024]
Abstract
The response to proteotoxic stresses such as heat shock allows organisms to maintain protein homeostasis under changing environmental conditions. We asked what happens if an organism can no longer react to cytosolic proteotoxic stress. To test this, we deleted or depleted, either individually or in combination, the stress-responsive transcription factors Msn2, Msn4, and Hsf1 in Saccharomyces cerevisiae. Our study reveals a combination of survival strategies, which together protect essential proteins. Msn2 and 4 broadly reprogram transcription, triggering the response to oxidative stress, as well as biosynthesis of the protective sugar trehalose and glycolytic enzymes, while Hsf1 mainly induces the synthesis of molecular chaperones and reverses the transcriptional response upon prolonged mild heat stress (adaptation).
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Affiliation(s)
- Moritz Mühlhofer
- Center for Protein Assemblies, Department of Bioscience, Technische Universität München, Garching, Germany
| | - Felix Offensperger
- Institute of Bioinformatics, Department of Informatics, Ludwig-Maximilians-Universität München, München, Germany
| | - Sarah Reschke
- Laboratory for Functional Genome Analysis at the Gene Center, LMU München, München, Germany
| | - Georg Wallmann
- Institute of Bioinformatics, Department of Informatics, Ludwig-Maximilians-Universität München, München, Germany
| | - Gergely Csaba
- Institute of Bioinformatics, Department of Informatics, Ludwig-Maximilians-Universität München, München, Germany
| | - Evi Berchtold
- Institute of Bioinformatics, Department of Informatics, Ludwig-Maximilians-Universität München, München, Germany
| | - Maximilian Riedl
- Center for Protein Assemblies, Department of Bioscience, Technische Universität München, Garching, Germany
| | - Helmut Blum
- Laboratory for Functional Genome Analysis at the Gene Center, LMU München, München, Germany
| | - Martin Haslbeck
- Center for Protein Assemblies, Department of Bioscience, Technische Universität München, Garching, Germany
| | - Ralf Zimmer
- Institute of Bioinformatics, Department of Informatics, Ludwig-Maximilians-Universität München, München, Germany
| | - Johannes Buchner
- Center for Protein Assemblies, Department of Bioscience, Technische Universität München, Garching, Germany
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16
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Banda-Vázquez JA, Mauz A, Werner JPF, Costa RD. VARPA: In Silico Additive Screening for Protein-Based Lighting Devices. SMALL METHODS 2024; 8:e2301038. [PMID: 38191802 DOI: 10.1002/smtd.202301038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 11/28/2023] [Indexed: 01/10/2024]
Abstract
Protein optoelectronics is an emerging field facing implementation and stabilization challenges of proteins in harsh non-natural environments, such as dry polymers, inorganic materials, etc., operating at high temperatures/irradiations. In this context, additives promoting structural and functional protein stabilization are paramount to realize highly performing devices. On one hand, trial-error experimental assays based on previous knowledge of classical additives in aqueous solutions are effort/time-consuming, while their translation to water-less matrices is uncertain. On the other hand, computational simulations (molecular dynamics, electronic structure methods, etc.) are limited by the system size and time. Herein, ligand-binding affinity and atomic perturbations to create a day-fast computational method combining Vina And Rosetta for Protein Additives (VARPA) to simulate the stabilization effect of sugars for the archetypal enhanced green fluorescent protein embedded in a standard dry polymer color-converting filter for bio-hybrid light-emitting diodes is merged. The VARPA's sugar additive prediction trend for protein stabilization is nicely validated by thermal and photophysical studies as well as lighting device analysis. The device stability followed the predicted enhanced stability trend, reaching a 40-fold improvement compared to reference devices. Overall, VARPA can be adapted to a myriad of additives and proteins, driving first-step experimental efforts toward highly performing protein devices.
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Affiliation(s)
- Jesús Agustín Banda-Vázquez
- Chair of Biogenic Functional Materials, Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 22, 94315, Straubing, Germany
| | - Alexander Mauz
- Chair of Biogenic Functional Materials, Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 22, 94315, Straubing, Germany
| | - Juan Pablo Fuenzalida Werner
- Chair of Biogenic Functional Materials, Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 22, 94315, Straubing, Germany
| | - Rubén D Costa
- Chair of Biogenic Functional Materials, Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 22, 94315, Straubing, Germany
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17
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Chaudhuri D, Chowdhury D, Chakraborty S, Bhatt M, Chowdhury R, Dutta A, Mistry A, Haldar S. Structurally different chemical chaperones show similar mechanical roles with independent molecular mechanisms. NANOSCALE 2024; 16:2540-2551. [PMID: 38214221 DOI: 10.1039/d3nr00398a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Osmolytes are well known to protect the protein structure against different chemical and physical denaturants. Since their actions with protein surfaces are mechanistically complicated and context dependent, the underlying molecular mechanism is not fully understood. Here, we combined single-molecule magnetic tweezers and molecular dynamics (MD) simulation to explore the mechanical role of osmolytes from two different classes, trimethylamine N-oxide (TMAO) and trehalose, as mechanical stabilizers of protein structure. We observed that these osmolytes increase the protein L mechanical stability by decreasing unfolding kinetics while accelerating the refolding kinetics under force, eventually shifting the energy landscape toward the folded state. These osmolytes mechanically stabilize the protein L and plausibly guide them to more thermodynamically robust states. Finally, we observed that osmolyte-modulated protein folding increases mechanical work output up to twofold, allowing the protein to fold under a higher force regime and providing a significant implication for folding-induced structural stability in proteins.
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Affiliation(s)
- Deep Chaudhuri
- Department of Chemistry, Ashoka University, Sonepat, Haryana, India.
| | - Debojyoti Chowdhury
- Department of Chemical and Biological Sciences, S.N. Bose National Center for Basic Sciences, Kolkata, West Bengal, India
| | - Soham Chakraborty
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, India
| | - Madhu Bhatt
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, India
| | - Rudranil Chowdhury
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, India
| | - Aakashdeep Dutta
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, India
| | - Ayush Mistry
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, India
| | - Shubhasis Haldar
- Department of Chemistry, Ashoka University, Sonepat, Haryana, India.
- Department of Chemical and Biological Sciences, S.N. Bose National Center for Basic Sciences, Kolkata, West Bengal, India
- Department of Biology, Trivedi School of Biosciences, Ashoka University, Sonepat, Haryana, India
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18
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Xu T, Yang X, Feng X, Luo H, Luo C, Jia MA, Lei L. Sensitive and Visual Detection of Brassica Yellows Virus Using Reverse Transcription Loop-Mediated Isothermal Amplification-Coupled CRISPR-Cas12 Assay. PHYTOPATHOLOGY 2024; 114:474-483. [PMID: 37589413 DOI: 10.1094/phyto-06-23-0195-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
Brassica yellows virus (BrYV) is an economically important virus on cruciferous species. In this study, a one-pot reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay coupled with the clustered regularly interspaced short palindromic repeats (CRISPR)/Cas12a system was developed for the detection of BrYV. The limit of detection of this method reached 32.8 copies of the BrYV ORF5, which is 100-fold more sensitive than the RT-LAMP method. Moreover, there was no cross-reactivity with other rapeseed-infecting RNA viruses or poleroviruses. We dried the CRISPR/Cas12a reagent in a trehalose and pullulan mixture to retain its efficacy at the RT-LAMP temperature of 63°C in order to allow portable BrYV detection in a water bath. The entire process can be performed in about 1 h, and a positive result can be rapidly and conveniently detected using a handheld UV lamp. In the field, the RT-LAMP-CRISPR/Cas12a assay was accurate and had higher sensitivity than RT-LAMP and reverse transcription-polymerase chain reaction assays. The novel RT-LAMP-CRISPR/Cas12a assay allows convenient, portable, rapid, low-cost, highly sensitive, and specific detection of BrYV and has great potential for on-site monitoring of BrYV.
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Affiliation(s)
- Tengzhi Xu
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Xiaolan Yang
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Xia Feng
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Hao Luo
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Chun Luo
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Meng-Ao Jia
- Guizhou Academy of Tobacco Sciences, Guiyang, Guizhou 550001, China
| | - Lei Lei
- Guizhou Rapeseed Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550008, China
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19
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Koch LF, Best T, Wüstenhagen E, Adrian K, Rammo O, Saul MJ. Novel insights into the isolation of extracellular vesicles by anion exchange chromatography. Front Bioeng Biotechnol 2024; 11:1298892. [PMID: 38312509 PMCID: PMC10836363 DOI: 10.3389/fbioe.2023.1298892] [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: 09/22/2023] [Accepted: 12/12/2023] [Indexed: 02/06/2024] Open
Abstract
Extracellular vesicles (EVs) are membrane structures enclosed by a lipid bilayer that are released into the extracellular space by all types of cells. EVs are involved in many physiological processes by transporting biologically active substances. Interest in EVs for diagnostic biomarker research and therapeutic drug delivery applications has increased in recent years. The realization of the full therapeutic potential of EVs is currently hampered by the lack of a suitable technology for the isolation and purification of EVs for downstream pharmaceutical applications. Anion Exchange Chromatography (AEX) is an established method in which specific charges on the AEX matrix can exploit charges on the surface of EVs and their interactions to provide a productive and scalable separation and purification method. The established AEX method using Eshmuno® Q, a strong tentacle anion exchange resin, was used to demonstrate the principal feasibility of AEX-based isolation and gain insight into isolated EV properties. Using several EV analysis techniques to provide a more detailed insight into EV populations during AEX isolation, we demonstrated that although the composition of CD9/63/81 remained constant for tetraspanin positive EVs, the size distribution and purity changed during elution. Higher salt concentrations eluted larger tetraspanin negative vesicles.
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Affiliation(s)
- Leon F. Koch
- Department of Biology, Technische Universität Darmstadt, Darmstadt, Germany
| | - Tatjana Best
- Department of Biology, Technische Universität Darmstadt, Darmstadt, Germany
- Merck Life Science KGaA, Darmstadt, Germany
| | | | | | | | - Meike J. Saul
- Department of Biology, Technische Universität Darmstadt, Darmstadt, Germany
- Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, Universtiy Cancer Center Hamburg, University Clinic Hamburg-Eppendorf, Hamburg, Germany
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20
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Chen BJ, Liu Y, Yang K, Li X, Dong X, Guan Y, Ismail A, Khoo HE. Amylase-assisted extraction alters nutritional and physicochemical properties of polysaccharides and saponins isolated from Ganoderma spp. Food Chem X 2023; 20:100913. [PMID: 38144747 PMCID: PMC10740064 DOI: 10.1016/j.fochx.2023.100913] [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: 05/05/2023] [Revised: 09/11/2023] [Accepted: 09/28/2023] [Indexed: 12/26/2023] Open
Abstract
This study aimed to evaluate the efficacy of amylase in hydrolyzing complex carbohydrates of different parts of Ganoderma spp. The aqueous extracts of the Ganoderma samples were analyzed for their selected nutritional composition and physicochemical properties. The purified extracts were also structurally characterized. The aqueous canopy extracts of red-purple Ganoderma had a notably higher total sugar and saponin content than their stalks, but not for the black-type Ganoderma. The enzymatic extraction effectively improved the extraction yields, whereas the amounts of sugars and saponins in some extracts were increased after the enzymatic treatment. The results also showed that only those enzyme-treated cultivated black Ganoderma canopy had increased total sugar and total saponin content. The antioxidant activities of all stalk extracts were higher than the canopy extracts. Their emulsifying properties were comparable with lecithin due to their high saponin content. Therefore, these extracts are new natural emulsifiers.
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Affiliation(s)
- Bo Jie Chen
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
| | - Yang Liu
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
| | - Ke Yang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
| | - Xia Li
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
- South Asia Branch of National Engineering Research Center of Dairy Health for Maternal and Child Health, Guilin University of Technology, Guilin 541006, China
| | - Xinhong Dong
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
- South Asia Branch of National Engineering Research Center of Dairy Health for Maternal and Child Health, Guilin University of Technology, Guilin 541006, China
| | - Yuan Guan
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
- South Asia Branch of National Engineering Research Center of Dairy Health for Maternal and Child Health, Guilin University of Technology, Guilin 541006, China
| | - Amin Ismail
- Department of Nutrition, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Hock Eng Khoo
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
- South Asia Branch of National Engineering Research Center of Dairy Health for Maternal and Child Health, Guilin University of Technology, Guilin 541006, China
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21
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Gomes I, Galamba N. Protein stability in a natural deep eutectic solvent: Preferential hydration or solvent slaving? J Chem Phys 2023; 159:235101. [PMID: 38099555 DOI: 10.1063/5.0177095] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
Deep eutectic solvents (DESs) emerged as potential alternative solvent media in multiple areas, including biomolecular (cryo)preservation. Herein, we studied the stability of a small protein (ubiquitin) in water and a betaine-glycerol-water (B:G:W) (1:2:ζ; ζ = 0, 1, 2, 5, 10) DES, through molecular dynamics. An AMBER-based model that accurately describes the density and shear viscosity of the DES is proposed. We find that water molecules are largely trapped in the solvent, precluding the formation of a full hydration layer, seemingly opposite to osmolytes' preferential exclusion/preferential hydration mechanism. Although the protein is stable in the DES, structural fluctuations are largely suppressed and only recovered upon sufficient hydration. This is explained by a solvent-slaving mechanism where β-fluctuations are key, with the non-monotonic hydration of some amino acids with the water content providing an explanation to the non-monotonic folding of some proteins in aqueous DESs. A major thermal stability enhancement in the DES is also observed, caused by a similar slowdown of the backbone torsional dynamics. Our results support a kinetic stabilization of the protein in the DES, whereas a possible thermodynamic stabilization does not follow a preferential hydration or water entrapment mechanism.
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Affiliation(s)
- Inês Gomes
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences of the University of Lisbon, C8, Campo Grande, 1749-016 Lisbon, Portugal
| | - Nuno Galamba
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences of the University of Lisbon, C8, Campo Grande, 1749-016 Lisbon, Portugal
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22
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Okuda T, Okazaki M, Hayano A, Okamoto H. Stability of Naked Nucleic Acids under Physical Treatment and Powder Formation: Suitability for Development as Dry Powder Formulations for Inhalation. Pharmaceutics 2023; 15:2786. [PMID: 38140126 PMCID: PMC10747740 DOI: 10.3390/pharmaceutics15122786] [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: 11/05/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
A number of functional nucleic acids, including plasmid DNA (pDNA) and small interfering RNA (siRNA), have been attracting increasing attention as new therapeutic modalities worldwide. Dry pDNA and siRNA powder formulations for inhalation are considered practical in clinical applications for respiratory diseases. However, physical stresses in the powder-forming process may destabilize nucleic acids, particularly when vectors with stabilizing effects are not used. We herein compare the stability of naked pDNA and siRNA through various physical treatments and two powder-forming processes. The structural and functional integrities of pDNA were markedly reduced via sonication, heating, and atomization, whereas those of siRNA were preserved throughout all of the physical treatments investigated. Spray-dried and spray-freeze-dried powders of siRNA maintained their structural and functional integrities, whereas those of pDNA did not. These results demonstrate that siRNA is more suitable for powder formation in the naked state than pDNA due to its higher stability under physical treatments. Furthermore, a spray-freeze-dried powder with a high content of naked siRNA (12% of the powder) was successfully produced that preserved its structural and functional integrities, achieving high aerosol performance with a fine particle fraction of approximately 40%.
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Affiliation(s)
- Tomoyuki Okuda
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 468-8503, Japan; (M.O.); (A.H.); (H.O.)
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23
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Maruf A, Milewska M, Varga M, Wandzik I. Trehalose-Bearing Carriers to Target Impaired Autophagy and Protein Aggregation Diseases. J Med Chem 2023; 66:15613-15628. [PMID: 38031413 PMCID: PMC10726369 DOI: 10.1021/acs.jmedchem.3c01442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 11/02/2023] [Accepted: 11/15/2023] [Indexed: 12/01/2023]
Abstract
In recent years, trehalose, a natural disaccharide, has attracted growing attention because of the discovery of its potential to induce autophagy. Trehalose has also been demonstrated to preserve the protein's structural integrity and to limit the aggregation of pathologically misfolded proteins. Both of these properties have made trehalose a promising therapeutic candidate to target autophagy-related disorders and protein aggregation diseases. Unfortunately, trehalose has poor bioavailability due to its hydrophilic nature and susceptibility to enzymatic degradation. Recently, trehalose-bearing carriers, in which trehalose is incorporated either by chemical conjugation or physical entrapment, have emerged as an alternative option to free trehalose to improve its efficacy, particularly for the treatment of neurodegenerative diseases, atherosclerosis, nonalcoholic fatty liver disease (NAFLD), and cancers. In the current Perspective, we discuss all existing literature in this emerging field and try to identify key challenges for researchers intending to develop trehalose-bearing carriers to stimulate autophagy or inhibit protein aggregation.
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Affiliation(s)
- Ali Maruf
- Department
of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty
of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland
- Biotechnology
Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland
- Drug
Research Progam, Faculty of Pharmacy, University
of Helsinki, Viikinkaari
5E, 00014 Helsinki, Finland
| | - Małgorzata Milewska
- Department
of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty
of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland
- Biotechnology
Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland
| | - Máté Varga
- Department
of Genetics, ELTE Eötvös Loránd
University, Pázmány
P. stny. 1/C, Budapest H-1117, Hungary
| | - Ilona Wandzik
- Department
of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty
of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland
- Biotechnology
Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland
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24
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Arya CK, Maurya S, Ramanathan G. Insight into the metabolic pathways of Paracoccus sp. strain DMF: a non-marine halotolerant methylotroph capable of degrading aliphatic amines/amides. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:125947-125964. [PMID: 38010547 DOI: 10.1007/s11356-023-30858-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 10/31/2023] [Indexed: 11/29/2023]
Abstract
Paracoccus sp. strain DMF (P. DMF from henceforth) is a gram-negative heterotroph known to tolerate and utilize high concentrations of N,N-dimethylformamide (DMF). The work presented here elaborates on the metabolic pathways involved in the degradation of C1 compounds, many of which are well-known pollutants and toxic to the environment. Investigations on microbial growth and detection of metabolic intermediates corroborate the outcome of the functional genome analysis. Several classes of C1 compounds, such as methanol, methylated amines, aliphatic amides, and naturally occurring quaternary amines like glycine betaine, were tested as growth substrates. The detailed growth and kinetic parameter analyses reveal that P. DMF can efficiently aerobically degrade trimethylamine (TMA) and grow on quaternary amines such as glycine betaine. The results show that the mechanism for halotolerant adaptation in the presence of glycine betaine is dissimilar from those observed for conventional trehalose-mediated halotolerance in heterotrophic bacteria. In addition, a close genomic survey revealed the presence of a Co(I)-based substrate-specific corrinoid methyltransferase operon, referred to as mtgBC. This demethylation system has been associated with glycine betaine catabolism in anaerobic methanogens and is unknown in denitrifying aerobic heterotrophs. This report on an anoxic-specific demethylation system in an aerobic heterotroph is unique. Our finding exposes the metabolic potential for the degradation of a variety of C1 compounds by P. DMF, making it a novel organism of choice for remediating a wide range of possible environmental contaminants.
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Affiliation(s)
- Chetan Kumar Arya
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Shiwangi Maurya
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Gurunath Ramanathan
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
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25
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Hussain A, Nguyen VT, Reigan P, McMurray M. Evolutionary degeneration of septins into pseudoGTPases: impacts on a hetero-oligomeric assembly interface. Front Cell Dev Biol 2023; 11:1296657. [PMID: 38125875 PMCID: PMC10731463 DOI: 10.3389/fcell.2023.1296657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/17/2023] [Indexed: 12/23/2023] Open
Abstract
The septin family of eukaryotic proteins comprises distinct classes of sequence-related monomers that associate in a defined order into linear hetero-oligomers, which are capable of polymerizing into cytoskeletal filaments. Like actin and ⍺ and β tubulin, most septin monomers require binding of a nucleotide at a monomer-monomer interface (the septin "G" interface) for assembly into higher-order structures. Like ⍺ and β tubulin, where GTP is bound by both subunits but only the GTP at the ⍺-β interface is subject to hydrolysis, the capacity of certain septin monomers to hydrolyze their bound GTP has been lost during evolution. Thus, within septin hetero-oligomers and filaments, certain monomers remain permanently GTP-bound. Unlike tubulins, loss of septin GTPase activity-creating septin "pseudoGTPases"-occurred multiple times in independent evolutionary trajectories, accompanied in some cases by non-conservative substitutions in highly conserved residues in the nucleotide-binding pocket. Here, we used recent septin crystal structures, AlphaFold-generated models, phylogenetics and in silico nucleotide docking to investigate how in some organisms the septin G interface evolved to accommodate changes in nucleotide occupancy. Our analysis suggests that yeast septin monomers expressed only during meiosis and sporulation, when GTP is scarce, are evolving rapidly and might not bind GTP or GDP. Moreover, the G dimerization partners of these sporulation-specific septins appear to carry compensatory changes in residues that form contacts at the G interface to help retain stability despite the absence of bound GDP or GTP in the facing subunit. During septin evolution in nematodes, apparent loss of GTPase activity was also accompanied by changes in predicted G interface contacts. Overall, our observations support the conclusion that the primary function of nucleotide binding and hydrolysis by septins is to ensure formation of G interfaces that impose the proper subunit-subunit order within the hetero-oligomer.
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Affiliation(s)
- Alya Hussain
- Program in Structural Biology and Biochemistry, Department of Cell and Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Vu T. Nguyen
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Philip Reigan
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Michael McMurray
- Program in Structural Biology and Biochemistry, Department of Cell and Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
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26
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Jakowec NA, Finegan M, Finkel SE. Disruption of trehalose periplasmic recycling dysregulates cAMP-CRP signaling in Escherichia coli during stationary phase. J Bacteriol 2023; 205:e0029223. [PMID: 37916804 PMCID: PMC10662143 DOI: 10.1128/jb.00292-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/13/2023] [Indexed: 11/03/2023] Open
Abstract
IMPORTANCE Survival during starvation hinges on the ability to manage intracellular energy reserves and to initiate appropriate metabolic responses to perturbations of such reserves. How Escherichia coli manage carbon storage systems under starvation stress, as well as transpose changes in intracellular metabolite levels into regulatory signals, is not well understood. Endogenous trehalose metabolism may be at the center of these processes, coupling carbon storage with carbon starvation responses. The coupled transport to the periplasm and subsequent hydrolysis of trehalose back to glucose for transport to the cytoplasm may function as a crucial metabolic signaling pathway. Although trehalose has been characterized as a stress protectant in E. coli, the disaccharide also functions as both an energy storage compound and a regulator of carbohydrate metabolism in fungi, plants, and other bacteria. Our research explores the metabolic regulatory properties of trehalose in E. coli and a potential mechanism by which the intracellular carbon pool is interconnected with regulatory circuits, enabling long-term survival.
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Affiliation(s)
- Nicolaus A. Jakowec
- Molecular and Computational Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, California, USA
| | - Melissa Finegan
- Molecular and Computational Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, California, USA
| | - Steven E. Finkel
- Molecular and Computational Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, California, USA
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27
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Lopez-Cavestany M, Wright OA, Cassidy AM, Carter AT, King MR. Dual Affinity Nanoparticles for the Transport of Therapeutics from Carrier Cells to Target Cells under Physiological Flow Conditions. ACS OMEGA 2023; 8:42748-42761. [PMID: 38024679 PMCID: PMC10652824 DOI: 10.1021/acsomega.3c05605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/06/2023] [Accepted: 10/19/2023] [Indexed: 12/01/2023]
Abstract
In this study, a novel two-stage nanoparticle delivery platform was developed based on the dual functionalization of a liposome with moieties that have fundamentally different strengths of adhesion and binding kinetics. The essential concept of this system is that the nanoparticles are designed to loosely bind to the carrier cell until they come into contact with the target cell, to which they bind with greater strength. This allows the nanoparticle to be transferred from one cell to another, circulating for longer periods of time in the blood and delivering the therapeutic agent to the target circulating tumor cell. Liposomes were prepared using the lipid cake and extrusion technique, then functionalized with E-selectin (ES), anti-cell surface vimentin antibody fragments, and TRAIL via click chemistry. The binding of dual affinity (DA) liposomes was confirmed with the neutrophil-like cell line PLB985, the colorectal cancer cell line HCT116, and healthy granulocytes isolated from peripheral whole blood under physiologically relevant fluid shear stress (FSS) in a cone-and-plate viscometer. Transfer of the DA liposomes from PLB985 to HCT116 cells under FSS was greater compared to all of the control liposome formulations. Additionally, DA liposomes demonstrated enhanced apoptotic effects on HCT116 cells in whole blood under FSS, surpassing the efficacy of the ES/TRAIL liposomes previously developed by the King Lab.
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Affiliation(s)
- Maria Lopez-Cavestany
- Department of Biomedical
Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Olivia A. Wright
- Department of Biomedical
Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ava M. Cassidy
- Department of Biomedical
Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Alexandria T. Carter
- Department of Biomedical
Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Michael R. King
- Department of Biomedical
Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
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28
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Lupi L, Gallo P. Glassy dynamics of water in TIP4P/Ice aqueous solutions of trehalose in comparison with the bulk phase. J Chem Phys 2023; 159:154504. [PMID: 37850697 DOI: 10.1063/5.0168933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/25/2023] [Indexed: 10/19/2023] Open
Abstract
We perform molecular dynamics simulations of TIP4P/Ice water in solution with trehalose for 3.65 and 18.57 wt. % concentrations and of bulk TIP4P/Ice water at ambient pressure, to characterize the structure and dynamics of water in a sugar aqueous solution in the supercooled region. We find here that TIP4P/Ice water in solution with trehalose molecules follows the Mode Coupling Theory and undergoes a fragile to strong transition up to the highest concentration investigated, similar to the bulk. Moreover, we perform a Mode Coupling Theory test, showing that the Time Temperature Superposition principle holds for both bulk TIP4P/Ice water and for TIP4P/Ice water in the solutions and we calculate the exponents of the theory. The direct comparison of the dynamical results for bulk water and water in the solutions shows upon cooling along the isobar a fastening of water dynamics for lower temperatures, T < 240 K. We found that the counter-intuitive behavior for the low temperature solutions can be explained with the diffusion anomaly of water leading us to the conclusion that the fastening observed below T = 240 K in water dynamics is only fictitious, due to the fact that the density of water molecules in the solutions is higher than the density of the bulk at the same temperature and pressure. This result should be taken into account in experimental investigations which are often carried out at constant pressure.
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Affiliation(s)
- Laura Lupi
- Dipartimento di Matematica e Fisica, Università Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Paola Gallo
- Dipartimento di Matematica e Fisica, Università Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy
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29
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Li H, Ren Y, Zhu Y, Tian J, Sun X, Sheng C, He P, Guo S, Zhou H. A Bio-Inspired Trehalose Additive for Reversible Zinc Anodes with Improved Stability and Kinetics. Angew Chem Int Ed Engl 2023; 62:e202310143. [PMID: 37578683 DOI: 10.1002/anie.202310143] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/14/2023] [Accepted: 08/14/2023] [Indexed: 08/15/2023]
Abstract
The moderate reversibility of Zn anodes, as a long-standing challenge in aqueous zinc-ion batteries, promotes the exploration of suitable electrolyte additives continuously. It is crucial to establish the absolute predominance of smooth deposition within multiple interfacial reactions for stable zinc anodes, including suppressing side parasitic reactions and facilitating Zn plating process. Trehalose catches our attention due to the reported mechanisms in sustaining biological stabilization. In this work, the inter-disciplinary application of trehalose is reported in the electrolyte modification for the first time. The pivotal roles of trehalose in suppressed hydrogen evolution and accelerated Zn deposition have been investigated based on the principles of thermodynamics as well as reaction kinetics. The electrodeposit changes from random accumulation of flakes to dense bulk with (002)-plane exposure due to the unlocked crystal-face oriented deposition with trehalose addition. As a result, the highly reversible Zn anode is obtained, exhibiting a high average CE of 99.8 % in the Zn/Cu cell and stable cycling over 1500 h under 9.0 % depth of discharge in the Zn symmetric cell. The designing principles and mechanism analysis in this study could serve as a source of inspiration in exploring novel additives for advanced Zn anodes.
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Affiliation(s)
- Haoyu Li
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, Collaborative Innovation Centre of Advanced Microstructures, Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
- Lab of Power and Energy Storage Batteries, Shenzhen Research Institute of Nanjing University, Shenzhen, 518057, P. R. China
| | - Yu Ren
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, Collaborative Innovation Centre of Advanced Microstructures, Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
| | - Yue Zhu
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, Collaborative Innovation Centre of Advanced Microstructures, Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
| | - Jiaming Tian
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, Collaborative Innovation Centre of Advanced Microstructures, Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
- Lab of Power and Energy Storage Batteries, Shenzhen Research Institute of Nanjing University, Shenzhen, 518057, P. R. China
| | - Xinyi Sun
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, Collaborative Innovation Centre of Advanced Microstructures, Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
| | - Chuanchao Sheng
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, Collaborative Innovation Centre of Advanced Microstructures, Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
| | - Ping He
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, Collaborative Innovation Centre of Advanced Microstructures, Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
| | - Shaohua Guo
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, Collaborative Innovation Centre of Advanced Microstructures, Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
- Lab of Power and Energy Storage Batteries, Shenzhen Research Institute of Nanjing University, Shenzhen, 518057, P. R. China
| | - Haoshen Zhou
- College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, Collaborative Innovation Centre of Advanced Microstructures, Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, 210093, P. R. China
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30
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Penkov NV. Terahertz spectroscopy as a method for investigation of hydration shells of biomolecules. Biophys Rev 2023; 15:833-849. [PMID: 37974994 PMCID: PMC10643733 DOI: 10.1007/s12551-023-01131-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 08/30/2023] [Indexed: 11/19/2023] Open
Abstract
The hydration of biomolecules is one of the fundamental processes underlying the construction of living matter. The formation of the native conformation of most biomolecules is possible only in an aqueous environment. At the same time, not only water affects the structure of biomolecules, but also biomolecules affect the structure of water, forming hydration shells. However, the study of the structure of biomolecules is given much more attention than their hydration shells. A real breakthrough in the study of hydration occurred with the development of the THz spectroscopy method, which showed that the hydration shell of biomolecules is not limited to 1-2 layers of strongly bound water, but also includes more distant areas of hydration with altered molecular dynamics. This review examines the fundamental features of the THz frequency range as a source of information about the structural and dynamic characteristics of water that change during hydration. The applied approaches to the study of hydration shells of biomolecules based on THz spectroscopy are described. The data on the hydration of biomolecules of all main types obtained from the beginning of the application of THz spectroscopy to the present are summarized. The emphasis is placed on the possible participation of extended hydration shells in the realization of the biological functions of biomolecules and at the same time on the insufficient knowledge of their structural and dynamic characteristics.
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Affiliation(s)
- Nikita V. Penkov
- Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, Institute of Cell Biophysics RAS, 142290 Pushchino, Russia
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31
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Moore RA, Azua-Bustos A, González-Silva C, Carr CE. Unveiling metabolic pathways involved in the extreme desiccation tolerance of an Atacama cyanobacterium. Sci Rep 2023; 13:15767. [PMID: 37737281 PMCID: PMC10516996 DOI: 10.1038/s41598-023-41879-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 09/01/2023] [Indexed: 09/23/2023] Open
Abstract
Gloeocapsopsis dulcis strain AAB1 is an extremely xerotolerant cyanobacterium isolated from the Atacama Desert (i.e., the driest and oldest desert on Earth) that holds astrobiological significance due to its ability to biosynthesize compatible solutes at ultra-low water activities. We sequenced and assembled the G. dulcis genome de novo using a combination of long- and short-read sequencing, which resulted in high-quality consensus sequences of the chromosome and two plasmids. We leveraged the G. dulcis genome to generate a genome-scale metabolic model (iGd895) to simulate growth in silico. iGd895 represents, to our knowledge, the first genome-scale metabolic reconstruction developed for an extremely xerotolerant cyanobacterium. The model's predictive capability was assessed by comparing the in silico growth rate with in vitro growth rates of G. dulcis, in addition to the synthesis of trehalose. iGd895 allowed us to explore simulations of key metabolic processes such as essential pathways for water-stress tolerance, and significant alterations to reaction flux distribution and metabolic network reorganization resulting from water limitation. Our study provides insights into the potential metabolic strategies employed by G. dulcis, emphasizing the crucial roles of compatible solutes, metabolic water, energy conservation, and the precise regulation of reaction rates in their adaptation to water stress.
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Affiliation(s)
- Rachel A Moore
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 275 Ferst Dr. NW, Atlanta, GA, 30332, USA.
| | - Armando Azua-Bustos
- Centro de Astrobiología (CSIC-INTA), Madrid, Spain
- Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago, Chile
| | | | - Christopher E Carr
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 275 Ferst Dr. NW, Atlanta, GA, 30332, USA
- Daniel Guggenheim School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
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32
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Araujo NDS, Perez R, Willot Q, Defrance M, Aron S. Facing lethal temperatures: Heat-shock response in desert and temperate ants. Ecol Evol 2023; 13:e10438. [PMID: 37720060 PMCID: PMC10500329 DOI: 10.1002/ece3.10438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/06/2023] [Accepted: 08/07/2023] [Indexed: 09/19/2023] Open
Abstract
Global climate changes may cause profound effects on species adaptation, particularly in ectotherms for whom even moderate warmer temperatures can lead to disproportionate heat failure. Still, several organisms evolved to endure high desert temperatures. Here, we describe the thermal tolerance survival and the transcriptomic heat stress response of three genera of desert (Cataglyphis, Melophorus, and Ocymyrmex) and two of temperate ants (Formica and Myrmica) and explore convergent and specific adaptations. We found heat stress led to either a reactive or a constitutive response in desert ants: Cataglyphis holgerseni and Melophorus bagoti differentially regulated very few transcripts in response to heat (0.12% and 0.14%, respectively), while Cataglyphis bombycina and Ocymyrmex robustior responded with greater expression alterations (respectively affecting 0.6% and 1.53% of their transcriptomes). These two responsive mechanisms-reactive and constitutive-were related to individual thermal tolerance survival and convergently evolved in distinct desert ant genera. Moreover, in comparison with desert species, the two temperate ants differentially expressed thousands of transcripts more in response to heat stress (affecting 8% and 12.71% of F. fusca and Myr. sabuleti transcriptomes). In summary, we show that heat adaptation in thermophilic ants involved changes in the expression response. Overall, desert ants show reduced transcriptional alterations even when under high thermal stress, and their expression response may be either constitutive or reactive to temperature increase.
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Affiliation(s)
| | - Rémy Perez
- Department of Evolutionary Biology & EcologyUniversité Libre de BruxellesBrusselsBelgium
| | - Quentin Willot
- Department of Evolutionary Biology & EcologyUniversité Libre de BruxellesBrusselsBelgium
- Zoophysiology, Department of BiologyAarhus UniversityAarhus‐CDenmark
| | - Matthieu Defrance
- Interuniversity Institute of Bioinformatics in BrusselsUniversité Libre de BruxellesBrusselsBelgium
| | - Serge Aron
- Department of Evolutionary Biology & EcologyUniversité Libre de BruxellesBrusselsBelgium
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33
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Li C, Tao L, Guan G, Guan Z, Perry AM, Hu T, Bing J, Xu M, Nobile CJ, Huang G. Atmospheric humidity regulates same-sex mating in Candida albicans through the trehalose and osmotic signaling pathways. SCIENCE CHINA. LIFE SCIENCES 2023; 66:1915-1929. [PMID: 37118508 PMCID: PMC10631464 DOI: 10.1007/s11427-023-2309-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 03/01/2023] [Indexed: 04/30/2023]
Abstract
Sexual reproduction is prevalent in eukaryotic organisms and plays a critical role in the evolution of new traits and in the generation of genetic diversity. Environmental factors often have a direct impact on the occurrence and frequency of sexual reproduction in fungi. The regulatory effects of atmospheric relative humidity (RH) on sexual reproduction and pathogenesis in plant fungal pathogens and in soil fungi have been extensively investigated. However, the knowledge of how RH regulates the lifecycles of human fungal pathogens is limited. In this study, we report that low atmospheric RH promotes the development of mating projections and same-sex (homothallic) mating in the human fungal pathogen Candida albicans. Low RH causes water loss in C. albicans cells, which results in osmotic stress and the generation of intracellular reactive oxygen species (ROS) and trehalose. The water transporting aquaporin Aqy1, and the G-protein coupled receptor Gpr1 function as cell surface sensors of changes in atmospheric humidity. Perturbation of the trehalose metabolic pathway by inactivating trehalose synthase or trehalase promotes same-sex mating in C. albicans by increasing osmotic or ROS stresses, respectively. Intracellular trehalose and ROS signal the Hog1-osmotic and Hsf1-Hsp90 signaling pathways to regulate the mating response. We, therefore, propose that the cell surface sensors Aqy1 and Gpr1, intracellular trehalose and ROS, and the Hog1-osmotic and Hsf1-Hsp90 signaling pathways function coordinately to regulate sexual mating in response to low atmospheric RH conditions in C. albicans.
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Affiliation(s)
- Chao Li
- Department of Infectious Diseases, Huashan Hospital, Shanghai Institute of Infectious Disease and Biosecurity and State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200438, China
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Li Tao
- Department of Infectious Diseases, Huashan Hospital, Shanghai Institute of Infectious Disease and Biosecurity and State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Guobo Guan
- Department of Infectious Diseases, Huashan Hospital, Shanghai Institute of Infectious Disease and Biosecurity and State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200438, China
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Zhangyue Guan
- Department of Infectious Diseases, Huashan Hospital, Shanghai Institute of Infectious Disease and Biosecurity and State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Austin M Perry
- Department of Molecular and Cell Biology, University of California, Merced, Merced, CA, 95343, USA
- Quantitative and Systems Biology Graduate Program, University of California, Merced, Merced, CA, 95343, USA
| | - Tianren Hu
- Department of Infectious Diseases, Huashan Hospital, Shanghai Institute of Infectious Disease and Biosecurity and State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Jian Bing
- Department of Infectious Diseases, Huashan Hospital, Shanghai Institute of Infectious Disease and Biosecurity and State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Ming Xu
- Department of Infectious Diseases, Huashan Hospital, Shanghai Institute of Infectious Disease and Biosecurity and State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Clarissa J Nobile
- Department of Molecular and Cell Biology, University of California, Merced, Merced, CA, 95343, USA
- Health Sciences Research Institute, University of California, Merced, Merced, CA, 95343, USA
| | - Guanghua Huang
- Department of Infectious Diseases, Huashan Hospital, Shanghai Institute of Infectious Disease and Biosecurity and State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200438, China.
- Shanghai Engineering Research Center of Industrial Microorganisms, Shanghai, 200438, China.
- Shanghai Huashen Institute of Microbes and Infections, Shanghai, 200052, China.
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Guihur A, Bourgine B, Rebeaud ME, Goloubinoff P. Design of an Arabidopsis thaliana reporter line to detect heat-sensing and signaling mutants. PLANT METHODS 2023; 19:56. [PMID: 37291595 DOI: 10.1186/s13007-023-01033-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 05/28/2023] [Indexed: 06/10/2023]
Abstract
BACKGROUND Global warming is a major challenge for plant survival and growth. Understanding the molecular mechanisms by which higher plants sense and adapt to upsurges in the ambient temperature is essential for developing strategies to enhance plant tolerance to heat stress. Here, we designed a heat-responsive Arabidopsis thaliana reporter line that allows an in-depth investigation of the mechanisms underlying the accumulation of protective heat-shock proteins (HSPs) in response to high temperature. METHODS A transgenic Arabidopsis thaliana reporter line named "Heat-Inducible Bioluminescence And Toxicity" (HIBAT) was designed to express from a conditional heat-inducible promoter, a fusion gene encoding for nanoluciferase and D-amino acid oxidase, whose expression is toxic in the presence of D-valine. HIBAT seedlings were exposed to different heat treatments in presence or absence of D-valine and analyzed for survival rate, bioluminescence and HSP gene expression. RESULTS Whereas at 22 °C, HIBAT seedlings grew unaffected by D-valine, and all survived iterative heat treatments without D-valine, 98% died following heat treatments on D-valine. The HSP17.3B promoter was highly specific to heat as it remained unresponsive to various plant hormones, Flagellin, H2O2, osmotic stress and high salt. RNAseq analysis of heat-treated HIBAT seedlings showed a strong correlation with expression profiles of two wild type lines, confirming that HIBAT does not significantly differ from its Col-0 parent. Using HIBAT, a forward genetic screen revealed candidate loss-of-function mutants, apparently defective either at accumulating HSPs at high temperature or at repressing HSP accumulation at non-heat-shock temperatures. CONCLUSION HIBAT is a valuable candidate tool to identify Arabidopsis mutants defective in the response to high temperature stress. It opens new avenues for future research on the regulation of HSP expression and for understanding the mechanisms of plant acquired thermotolerance.
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Affiliation(s)
- Anthony Guihur
- Department of Plant Molecular Biology, Faculty of Biology and Medicine, University of Lausanne, 1015, Lausanne, Switzerland.
| | - Baptiste Bourgine
- Department of Plant Molecular Biology, Faculty of Biology and Medicine, University of Lausanne, 1015, Lausanne, Switzerland
| | - Mathieu E Rebeaud
- Institute of Physics, School of Basic Sciences, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Pierre Goloubinoff
- Department of Plant Molecular Biology, Faculty of Biology and Medicine, University of Lausanne, 1015, Lausanne, Switzerland.
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35
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Jiang Q, Ji P, Ao S, Gao X, Zhang X. Effects of Starvation and Refeeding on Glucose Metabolism and Immune Responses in Macrobrachium rosenbergii. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2023:10.1007/s10126-023-10218-3. [PMID: 37249812 DOI: 10.1007/s10126-023-10218-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/19/2023] [Indexed: 05/31/2023]
Abstract
Starvation is a common challenge for aquatic animals in both natural and cultured environments. To investigate the effects of starvation and refeeding on glucose metabolism and immunity in Macrobrachium rosenbergii, prawns were starved for 14 days and then refed for 7 days. Results showed that both glucose and trehalose levels decreased significantly at the beginning of starvation, followed by a significant decrease in glycogen content in the hepatopancreas and muscle. Triglyceride and total protein reserves were also mobilized under starvation, with a slightly quicker response from triglycerides. The mRNA levels of glycolysis (glucokinase) and anabolism-related enzymes (glycogen branching enzyme, diacylglycerol acyltransferase, and transpeptidase) decreased during starvation, while gluconeogenic potential was induced, as indicated by up-regulated transcriptional levels of gluconeogenic enzymes (phosphoenolpyruvate carboxykinase) and catabolism-related enzymes (glycogen debranching enzyme, adipose triglyceride lipase, and cathepsin B). Starvation also stimulated the expression of the crustacean hyperglycemic hormone and inhibited insulin-like peptide expression, indicating their potential role in glucose metabolism regulation. In addition, starvation increased the mRNA levels of superoxide dismutase and prophenoloxidase, indicating an influence on the immune system. After bacterial infection, starved prawns showed enhanced activity of non-specific immunological parameters and reduced mortality. Refeeding for 7 days led to a recovery of physiological and biochemical indices and transcriptional levels of metabolism/immune-related genes. Our findings provide a better understanding of the mechanisms underlying energy utilization, metabolic adaptation, and immune response to starvation in M. rosenbergii.
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Affiliation(s)
- Qun Jiang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Peng Ji
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Shiqi Ao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Xiaojian Gao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Xiaojun Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
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Dieplinger J, Pinto JT, Dekner M, Brachtl G, Paudel A. Impact of Different Saccharides on the In-Process Stability of a Protein Drug During Evaporative Drying: From Sessile Droplet Drying to Lab-Scale Spray Drying. Pharm Res 2023; 40:1283-1298. [PMID: 37012535 DOI: 10.1007/s11095-023-03498-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/05/2023] [Indexed: 04/05/2023]
Abstract
OBJECTIVES Solid biopharmaceutical products can circumvent lower temperature storage and transport and increase remote access with lower carbon emissions and energy consumption. Saccharides are known stabilizers in a solid protein produced via lyophilization and spray drying (SD). Thus, it is essential to understand the interactions between saccharides and proteins and the stabilization mechanism. METHODS A miniaturized single droplet drying (MD) method was developed to understand how different saccharides stabilize proteins during drying. We applied our MD to different aqueous saccharide-protein systems and transferred our findings to SD. RESULTS The poly- and oligosaccharides tend to destabilize the protein during drying. The oligosaccharide, Hydroxypropyl β-cyclodextrin (HPβCD) shows high aggregation at a high saccharide-to-protein molar ratio (S/P ratio) during MD, and the finding is supported by nanoDSF results. The polysaccharide, Dextran (DEX) leads to larger particles, whereas HPBCD leads to smaller particles. Furthermore, DEX is not able to stabilize the protein at higher S/P ratios either. In contrast, the disaccharide Trehalose Dihydrate (TD) does not increase or induce protein aggregation during the drying of the formulation. It can preserve the protein's secondary structure during drying, already at low concentrations. CONCLUSION During the drying of S/P formulations containing the saccharides TD and DEX, the MD approach could anticipate the in-process (in) stability of protein X at laboratory-scale SD. In contrast, for the systems with HPβCD, the results obtained by SD were contradictory to MD. This underlines that depending on the drying operation, careful consideration needs to be applied to the selection of saccharides and their ratios.
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Affiliation(s)
- Johanna Dieplinger
- Research Center for Pharmaceutical Engineering GmbH, Graz, Austria
- Institute of Process and Particle Engineering, Technical University of Graz, Graz, Austria
| | - Joana T Pinto
- Research Center for Pharmaceutical Engineering GmbH, Graz, Austria
| | | | | | - Amrit Paudel
- Research Center for Pharmaceutical Engineering GmbH, Graz, Austria.
- Institute of Process and Particle Engineering, Technical University of Graz, Graz, Austria.
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37
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Lee J, Jeong B, Bae HR, Jang HA, Kim JK. Trehalose Biosynthesis Gene otsA Protects against Stress in the Initial Infection Stage of Burkholderia-Bean Bug Symbiosis. Microbiol Spectr 2023; 11:e0351022. [PMID: 36976011 PMCID: PMC10100943 DOI: 10.1128/spectrum.03510-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 03/13/2023] [Indexed: 03/29/2023] Open
Abstract
Trehalose, a nonreducing disaccharide, functions as a stress protectant in many organisms, including bacteria. In symbioses involving bacteria, the bacteria have to overcome various stressors to associate with their hosts; thus, trehalose biosynthesis may be important for symbiotic bacteria. Here, we investigated the role of trehalose biosynthesis in the Burkholderia-bean bug symbiosis. Expression levels of two trehalose biosynthesis genes, otsA and treS, were elevated in symbiotic Burkholderia insecticola cells, and hence mutant ΔotsA and ΔtreS strains were generated to examine the functions of these genes in symbiosis. An in vivo competition assay with the wild-type strain revealed that fewer ΔotsA cells, but not ΔtreS cells, colonized the host symbiotic organ, the M4 midgut, than wild-type cells. The ΔotsA strain was susceptible to osmotic pressure generated by high salt or high sucrose concentrations, suggesting that the reduced symbiotic competitiveness of the ΔotsA strain was due to the loss of stress resistance. We further demonstrated that fewer ΔotsA cells infected the M4 midgut initially but that fifth-instar nymphs exhibited similar symbiont population size as the wild-type strain. Together, these results demonstrated that the stress resistance role of otsA is important for B. insecticola to overcome the stresses it encounters during passage through the midgut regions to M4 in the initial infection stage but plays no role in resistance to stresses inside the M4 midgut in the persistent stage. IMPORTANCE Symbiotic bacteria have to overcome stressful conditions present in association with the host. In the Burkholderia-bean bug symbiosis, we speculated that a stress-resistant function of Burkholderia is important and that trehalose, known as a stress protectant, plays a role in the symbiotic association. Using otsA, the trehalose biosynthesis gene, and a mutant strain, we demonstrated that otsA confers Burkholderia with competitiveness when establishing a symbiotic association with bean bugs, especially playing a role in initial infection stage. In vitro assays revealed that otsA provides the resistance against osmotic stresses. Hemipteran insects, including bean bugs, feed on plant phloem sap, which may lead to high osmotic pressures in the midguts of hemipterans. Our results indicated that the stress-resistant role of otsA is important for Burkholderia to overcome the osmotic stresses present during the passage through midgut regions to reach the symbiotic organ.
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Affiliation(s)
- Junbeom Lee
- Metabolomics Research Center for Functional Materials, Kyungsung University, Busan, South Korea
| | - Bohyun Jeong
- Department of Microbiology, Kosin University College of Medicine, Busan, South Korea
| | - Ha Ram Bae
- Department of Microbiology, Kosin University College of Medicine, Busan, South Korea
| | - Ho Am Jang
- Department of Biology, College of Natural Sciences, Soonchunhyang University, Asan, South Korea
| | - Jiyeun Kate Kim
- Department of Microbiology, Kosin University College of Medicine, Busan, South Korea
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38
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Hu Y, Liu X, Liu F, Xie J, Zhu Q, Tan S. Trehalose in Biomedical Cryopreservation-Properties, Mechanisms, Delivery Methods, Applications, Benefits, and Problems. ACS Biomater Sci Eng 2023; 9:1190-1204. [PMID: 36779397 DOI: 10.1021/acsbiomaterials.2c01225] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Cells and tissues are the foundation of translational medicine. At present, one of the main technological obstacles is their preservation for long-term usage while maintaining adequate viability and function. Optimized storage techniques must be developed to make them safer to use in the clinic. Cryopreservation is the most common long-term preservation method to maintain the vitality and function of cells and tissues. But, the formation of ice crystals in cells and tissues is considered to be the main mechanism that could harm cells and tissues during freezing and thawing. To reduce the formation of ice crystals, cryoprotective agents (CPAs) must be added to the cells and tissues to achieve the cryoprotective effect. However, conventional cryopreservation of cells and tissues often needs to use toxic organic solvents as CPAs. As a result, cryopreserved cells and tissues may need to go through a time-consuming washing process to remove CPAs for further applications in translational medicine, and multiple valuable cells are potentially lost or killed. Currently, trehalose has been researched as a nontoxic CPA due to its cryoprotective ability and stability during cryopreservation. Nevertheless, trehalose is a nonpermeable CPA, and the lack of an effective intracellular trehalose delivery method has become the main obstacle to its use in cryopreservation. This article illustrated the properties, mechanisms, delivery methods, and applications of trehalose, summarized the benefits and limits of trehalose, and summed up the findings and research direction of trehalose in biomedical cryopreservation.
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Affiliation(s)
- Yuying Hu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Xiangjian Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Fenglin Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Jingxian Xie
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Qubo Zhu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Songwen Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
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Oswin HP, Haddrell AE, Hughes C, Otero-Fernandez M, Thomas RJ, Reid JP. Oxidative Stress Contributes to Bacterial Airborne Loss of Viability. Microbiol Spectr 2023; 11:e0334722. [PMID: 36912675 PMCID: PMC10101003 DOI: 10.1128/spectrum.03347-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 01/18/2023] [Indexed: 03/14/2023] Open
Abstract
While the airborne decay of bacterial viability has been observed for decades, an understanding of the mechanisms driving the decay has remained elusive. The airborne transport of bacteria is often a key step in their life cycle and as such, characterizing the mechanisms driving the airborne decay of bacteria is an essential step toward a more complete understanding of microbial ecology. Using the Controlled Electrodynamic Levitation and Extraction of Bioaerosols onto a Substrate (CELEBS), it was possible to systematically evaluate the impact of different physicochemical and environmental parameters on the survival of Escherichia coli in airborne droplets of Luria Bertani broth. Rather than osmotic stress driving the viability loss, as was initially considered, oxidative stress was found to play a key role. As the droplets evaporate and equilibrate with the surrounding environment, the surface-to-volume ratio increases, which in turn increased the formation of reactive oxygen species in the droplet. These reactive oxygen species appear to play a key role in driving the airborne loss of viability of E. coli. IMPORTANCE The airborne transport of bacteria has a wide range of impacts, from disease transmission to cloud formation. By understanding the factors that influence the airborne stability of bacteria, we can better understand these processes. However, while we have known for several decades that airborne bacteria undergo a gradual loss of viability, we have not previously identified the mechanisms driving this process. In this work, we discovered that oxygen surrounding an airborne droplet facilitates the formation of reactive oxygen species within the droplet, which then gradually damage and kill bacteria within the droplet. This discovery indicates that adaptations to help bacteria deal with oxidative stress may also aid their airborne survival and be essential adaptations for bacterial airborne pathogens. Understanding the adaptations bacteria need to survive in airborne droplets could eventually lead to the development of novel antimicrobials designed to inhibit their airborne survival, helping to prevent the transmission of disease.
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Affiliation(s)
- Henry P. Oswin
- School of Chemistry, Cantock’s Close, University of Bristol, Bristol, United Kingdom
| | - Allen E. Haddrell
- School of Chemistry, Cantock’s Close, University of Bristol, Bristol, United Kingdom
| | - Cordelia Hughes
- School of Chemistry, Cantock’s Close, University of Bristol, Bristol, United Kingdom
| | - Mara Otero-Fernandez
- School of Chemistry, Cantock’s Close, University of Bristol, Bristol, United Kingdom
| | - Richard J. Thomas
- Defence Science Technology Laboratory (DSTL), Porton Down, Salisbury, United Kingdom
| | - Jonathan P. Reid
- School of Chemistry, Cantock’s Close, University of Bristol, Bristol, United Kingdom
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40
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Brom J, Petrikis RG, Pielak GJ. How Sugars Protect Dry Protein Structure. Biochemistry 2023; 62:1044-1052. [PMID: 36802580 PMCID: PMC10126877 DOI: 10.1021/acs.biochem.2c00692] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/27/2023] [Indexed: 02/20/2023]
Abstract
Extremotolerant organisms and industry exploit sugars as desiccation protectants, with trehalose being widely used by both. How sugars, in general, and the hydrolytically stable sugar trehalose, in particular, protect proteins is poorly understood, which hinders the rational design of new excipients and implementation of novel formulations for preserving lifesaving protein drugs and industrial enzymes. We employed liquid-observed vapor exchange nuclear magnetic resonance (LOVE NMR), differential scanning calorimetry (DSC), and thermal gravimetric analysis (TGA) to show how trehalose and other sugars protect two model proteins: the B1 domain of streptococcal protein G (GB1) and truncated barley chymotrypsin inhibitor 2 (CI2). Residues with intramolecular H-bonds are most protected. The LOVE NMR and DSC data indicate that vitrification may be protective. Combining LOVE NMR and TGA data shows that water retention is not important. Our data suggest that sugars protect protein structure as they dry by strengthening intraprotein H-bonds and water replacement and that trehalose is the stress-tolerance sugar of choice because of its covalent stability.
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Affiliation(s)
- Julia
A. Brom
- Department
of Chemistry, University of North Carolina
at Chapel Hill (UNC-CH), Chapel
Hill, North Carolina 27599-3290, United States
| | - Ruta G. Petrikis
- Department
of Chemistry, University of North Carolina
at Chapel Hill (UNC-CH), Chapel
Hill, North Carolina 27599-3290, United States
| | - Gary J. Pielak
- Department
of Chemistry, University of North Carolina
at Chapel Hill (UNC-CH), Chapel
Hill, North Carolina 27599-3290, United States
- Department
of Biochemistry & Biophysics, UNC-CH, Chapel Hill, North Carolina 27599, United States
- Lineberger
Cancer Center, UNC-CH, Chapel Hill, North Carolina 27599, United States
- Integrative
Program for Biological and Genome Sciences, UNC-CH, Chapel Hill, North Carolina 27599-7100, United States
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41
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Cardoso CP, Campos FG, Napoleão GM, Barzotto GR, Campos LP, Ferreira G, Boaro CSF. Modification of Sugar Profile and Ripening in Atemoya ( Annona × atemoya Mabb.) Fruits through Copper Hydroxide Application. PLANTS (BASEL, SWITZERLAND) 2023; 12:768. [PMID: 36840115 PMCID: PMC9964681 DOI: 10.3390/plants12040768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/25/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
Atemoya (Annona × atemoya Mabb.), a climacteric fruit of the Annonaceae family, is becoming increasingly popular due to its organoleptic and nutritional properties. Anthracnose, a fungus of the Colletotrichum genus, is one of the most serious diseases in orchards, causing significant damage if not controlled, so producers use phytosanitary products. The current study sought to investigate the quality of atemoya fruits after harvest in an orchard with anthracnose controlled by Cu(OH)2 application: T1-no Cu(OH)2, T2-7.8 mL Cu(OH)2 L1 divided into two applications, T3-15.6 mL Cu(OH)2 L1 divided into four, T4-8.0 mL Cu(OH)2 L1 divided into eight, and T5-13.0 mL Cu(OH)2 L1 divided into thirteen applications. The sugar profile of fruits was examined, as well as MDA, H2O2, and quality parameters such as pH, mass, soluble solids, titratable acidity, and maturation index. MDA, such as H2O2, can function as a signal molecule. Eight applications of 1.0 mL L-1 Cu(OH)2 resulted in increased concentrations of H2O2 and MDA, signal molecules involved in sugar modification profiles such as glucose, fructose, and trehalose. It also had a high titratable acidity, a lower maturation index, better fruit quality, and a longer shelf life.
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Affiliation(s)
- Caroline P. Cardoso
- Biodiversity and Biostatistics Department, Institute of Biosciences, UNESP—São Paulo State University, Campus Botucatu, Street Prof. Dr. Antonio Celso Wagner Zanin, 250-District de Rubião Junior, Botucatu 18618-689, São Paulo, Brazil
| | - Felipe G. Campos
- Biodiversity and Biostatistics Department, Institute of Biosciences, UNESP—São Paulo State University, Campus Botucatu, Street Prof. Dr. Antonio Celso Wagner Zanin, 250-District de Rubião Junior, Botucatu 18618-689, São Paulo, Brazil
| | - Gabriel M. Napoleão
- School of Agriculture, Plant Production Department, UNESP—São Paulo State University, Campus Botucatu, Ave. Universitária, nº 3780-Altos do Paraíso, Botucatu 18610-034, São Paulo, Brazil
| | - Gustavo R. Barzotto
- School of Agriculture, Plant Production Department, UNESP—São Paulo State University, Campus Botucatu, Ave. Universitária, nº 3780-Altos do Paraíso, Botucatu 18610-034, São Paulo, Brazil
| | - Lauro P. Campos
- Biodiversity and Biostatistics Department, Institute of Biosciences, UNESP—São Paulo State University, Campus Botucatu, Street Prof. Dr. Antonio Celso Wagner Zanin, 250-District de Rubião Junior, Botucatu 18618-689, São Paulo, Brazil
| | - Gisela Ferreira
- Biodiversity and Biostatistics Department, Institute of Biosciences, UNESP—São Paulo State University, Campus Botucatu, Street Prof. Dr. Antonio Celso Wagner Zanin, 250-District de Rubião Junior, Botucatu 18618-689, São Paulo, Brazil
| | - Carmen S. F. Boaro
- Biodiversity and Biostatistics Department, Institute of Biosciences, UNESP—São Paulo State University, Campus Botucatu, Street Prof. Dr. Antonio Celso Wagner Zanin, 250-District de Rubião Junior, Botucatu 18618-689, São Paulo, Brazil
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42
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Perez R, Aron S. Protective role of trehalose in the Namib desert ant, Ocymyrmex robustior. J Exp Biol 2023; 226:286983. [PMID: 36695637 DOI: 10.1242/jeb.245149] [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: 10/03/2022] [Accepted: 01/12/2023] [Indexed: 01/26/2023]
Abstract
Over recent decades, increasing attention has been paid to how low-molecular-weight molecules affect thermal tolerance in animals. Although the disaccharide sugar trehalose is known to serve as a thermal protectant in unicellular organisms, nothing is known about its potential role in insects. In this study, we investigated the effect of trehalose on heat tolerance in the Namib desert ant, Ocymyrmex robustior, one of the most thermotolerant animals found in terrestrial ecosystems. First, we tested whether a trehalose-supplemented diet increased worker survival following exposure to heat stress. Second, we assessed the degree of protein damage by comparing protein aggregation levels for trehalose-supplemented workers and control workers. Third, we compared the expression levels of three genes involved in trehalose metabolism. We found that trehalose supplementation significantly enhanced worker heat tolerance, increased metabolic levels of trehalose and reduced protein aggregation under conditions of heat stress. Expression levels of the three genes varied in a manner that was consistent with the maintenance of trehalose in the hemolymph and tissues under conditions of heat stress. Altogether, these results suggest that increased trehalose concentration may help protect Namib desert ant individuals against heat stress. More generally, they highlight the role played by sugar metabolites in boosting tolerance in extremophiles.
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Affiliation(s)
- Rémy Perez
- Department of Evolutionary Biology & Ecology, Université Libre de Bruxelles, 50 Avenue F. D. Roosevelt, B-1050 Brussels, Belgium
| | - Serge Aron
- Department of Evolutionary Biology & Ecology, Université Libre de Bruxelles, 50 Avenue F. D. Roosevelt, B-1050 Brussels, Belgium
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Noverraz F, Robin B, Passemard S, Fauvel B, Presumey J, Rigal E, Cookson A, Chopineau J, Martineau P, Villalba M, Jorgensen C, Aubert-Pouëssel A, Morille M, Gerber-Lemaire S. Novel trehalose-based excipients for stabilizing nebulized anti-SARS-CoV-2 antibody. Int J Pharm 2023; 630:122463. [PMID: 36462738 PMCID: PMC9710110 DOI: 10.1016/j.ijpharm.2022.122463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/23/2022] [Accepted: 11/27/2022] [Indexed: 12/02/2022]
Abstract
COVID-19 is caused by the infection of the lungs by SARS-CoV-2. Monoclonal antibodies, such as sotrovimab, showed great efficiency in neutralizing the virus before its internalization by lung epithelial cells. However, parenteral routes are still the preferred route of administration, even for local infections, which requires injection of high doses of antibody to reach efficacious concentrations in the lungs. Lung administration of antibodies would be more relevant requiring lower doses, thus reducing the costs and the side effects. But aerosolization of therapeutic proteins is very challenging, as the different processes available are harsh and trigger protein aggregation and conformational changes. This decreases the efficiency of the treatment, and can increase its immunogenicity. To address those issues, we developed a series of new excipients composed of a trehalose core, a succinyl side chain and a hydrophobic carbon chain (from 8 to 16 carbons). Succinylation increased the solubility of the excipients, allowing their use at relevant concentrations for protein stabilization. In particular, the excipient with 16 carbons (C16TreSuc) used at 5.6 mM was able to preserve colloidal stability and antigen-binding ability of sotrovimab during the nebulization process. It could also be used as a cryoprotectant, allowing storage of sotrovimab in a lyophilized form during weeks. Finally, we demonstrated that C16TreSuc could be used as an excipient to stabilize antibodies for the treatment against COVID-19, by in vitro and in vivo assays. The presence of C16TreSuc during nebulization preserved the neutralization capacity of sotrovimab against SARS-CoV-2 in vitro; an increase of its efficacy was even observed, compared to the non-nebulized control. The in vivo study also showed the wide distribution of sotrovimab in mice lungs, after nebulization with 5.6 mM of excipient. This work brings a solution to stabilize therapeutic proteins during storage and nebulization, making pulmonary immunotherapy possible in the treatment of COVID-19 and other lung diseases.
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Affiliation(s)
- François Noverraz
- Group for Functionalized Biomaterials, Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC SCI-SB-SG, Station 6, CH-1015 Lausanne, Switzerland
| | - Baptiste Robin
- MedXCell Science, Bâtiment Cyborg 1 (IRMB), Hôpital Saint-Eloi, 80 avenue Augustin Fliche, 34295 Montpellier, France
| | - Solène Passemard
- Montpellier Life Science Bâtiment Cyborg 1 (IRMB), Hôpital Saint-Eloi, 80 avenue Augustin Fliche, 34295 Montpellier, France
| | - Bénédicte Fauvel
- CYTEA BIO, Bâtiment Cyborg 1 (IRMB), Hôpital Saint-Eloi, 80 avenue Augustin Fliche, 34295 Montpellier, France
| | - Jessy Presumey
- CYTEA BIO, Bâtiment Cyborg 1 (IRMB), Hôpital Saint-Eloi, 80 avenue Augustin Fliche, 34295 Montpellier, France
| | - Emilie Rigal
- CYTEA BIO, Bâtiment Cyborg 1 (IRMB), Hôpital Saint-Eloi, 80 avenue Augustin Fliche, 34295 Montpellier, France
| | - Alan Cookson
- MedXCell SA, Av. des Planches 20C, 1820 Montreux, Suisse
| | - Joël Chopineau
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - Martin Villalba
- IRMB, Univ Montpellier, INSERM, CNRS, CHU Montpellier, Montpellier, France
| | | | | | - Marie Morille
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Sandrine Gerber-Lemaire
- Group for Functionalized Biomaterials, Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC SCI-SB-SG, Station 6, CH-1015 Lausanne, Switzerland.
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44
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Forouzanfar F, Vakilzadeh MM, Mehri A, Pourbagher-Shahri AM, Ganjali S, Abbasifard M, Sahebkar A. Anti-arthritic and Antioxidant Effects of Trehalose in an Experimental Model of Arthritis. RECENT ADVANCES IN INFLAMMATION & ALLERGY DRUG DISCOVERY 2023; 17:145-151. [PMID: 37622696 DOI: 10.2174/2772270817666230825093141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 07/10/2023] [Accepted: 07/10/2023] [Indexed: 08/26/2023]
Abstract
BACKGROUND The purpose of the present study was to study the potential anti-arthritic and antioxidant effects of trehalose in an experimental model of complete Freund's adjuvant (CFA)-induced arthritis. METHODS Arthritis was induced via subcutaneous injection of CFA (0.1) into the right footpad of each rat. Trehalose (10 mg/kg per day) and indomethacin (5 mg/kg) as a reference drug were intraperitoneally injected into CFA-induced arthritic rats from days 0 to 21. Changes in paw volume, pain responses, arthritic score, and oxidative/antioxidative parameters were determined. RESULTS Trehalose administration could significantly decrease arthritis scores (p <0.01) and paw edema (p <0.001), and significantly increase the nociceptive threshold (p <0.05) in CFA-induced arthritic rats. Trehalose also significantly reduced the pro-oxidant-antioxidant balance values when compared to CFA treatment alone. In addition, no significant difference was found between the trehalose group and indomethacin as a positive control group. CONCLUSION The current study suggests that trehalose has a protective effect against arthritis, which may be mediated by antioxidative effects of this disaccharide.
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Affiliation(s)
- Fatemeh Forouzanfar
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Neuroscience, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Ali Mehri
- Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Shiva Ganjali
- The Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong, Australia
| | - Mitra Abbasifard
- Immunology of Infectious Diseases Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
- Department of Internal Medicine, Ali-Ibn Abi-Talib Hospital, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Amirhossein Sahebkar
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- School of Medicine, The University of Western Australia, Perth, Australia
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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45
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Wang J, Fan H, Li Y, Zhang TF, Liu YH. Trehalose-6-phosphate phosphatases are involved in trehalose synthesis and metamorphosis in Bactrocera minax. INSECT SCIENCE 2022; 29:1643-1658. [PMID: 35075784 DOI: 10.1111/1744-7917.13010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/24/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
Trehalose is the principal sugar circulating in the hemolymph of insects, and trehalose synthesis is catalyzed by trehalose-6-phosphate synthase (TPS) and trehalose-6-phosphate phosphatase (TPP). Insect TPS is a fused enzyme containing both TPS domain and TPP domain. Thus, many insects do not possess TPP genes as TPSs have replaced the function of TPPs. However, TPPs are widely distributed across the dipteran insects, while the roles they play remain largely unknown. In this study, 3 TPP genes from notorious dipteran pest Bactrocera minax (BmiTPPB, BmiTPPC1, and BmiTPPC2) were identified and characterized. The different temporal-spatial expression patterns of 3 BmiTPPs implied that they exert different functions in B. minax. Recombinant BmiTPPs were heterologously expressed in yeast cells, and all purified proteins exhibited enzymatic activities, despite the remarkable disparity in performance between BmiTPPB and BmiTPPCs. RNA interference revealed that all BmiTPPs were successfully downregulated after double-stranded RNA injection, leading to decreased trehalose content and increased glucose content. Also, suppression of BmiTPPs significantly affected expression of downstream genes and increased the mortality and malformation rate. Collectively, these results indicated that all 3 BmiTPPs in B. minax are involved in trehalose synthesis and metamorphosis. Thus, these genes could be evaluated as insecticidal targets for managing B. minax, and even for other dipteran pests.
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Affiliation(s)
- Jia Wang
- College of Plant Protection, Southwest University, Chongqing, China
| | - Huan Fan
- College of Plant Protection, Southwest University, Chongqing, China
| | - Ying Li
- College of Plant Protection, Southwest University, Chongqing, China
| | - Tong-Fang Zhang
- College of Food Science, Southwest University, Chongqing, China
| | - Ying-Hong Liu
- College of Plant Protection, Southwest University, Chongqing, China
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46
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Comizzoli P, Amelkina O, Lee PC. Damages and stress responses in sperm cells and other germplasms during dehydration and storage at nonfreezing temperatures for fertility preservation. Mol Reprod Dev 2022; 89:565-578. [PMID: 36370428 DOI: 10.1002/mrd.23651] [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: 08/28/2022] [Revised: 10/26/2022] [Accepted: 11/02/2022] [Indexed: 11/13/2022]
Abstract
Long-term preservation of sperm, oocytes, and gonadal tissues at ambient temperatures has the potential to lower the costs and simplify biobanking in human reproductive medicine, as well as for the management of animal populations. Over the past decades, different dehydration protocols and long-term storage solutions at nonfreezing temperatures have been explored, mainly for mammalian sperm cells. Oocytes and gonadal tissues are more challenging to dehydrate so little to no progress have been made. Currently, the detrimental effects of the drying process itself are better characterized than the impact of long-term storage at nonfreezing temperatures. While structural and functional properties of germ cells can be preserved after dehydration, a long list of damages and stresses in nuclei, organelles, and cytoplasmic membranes have been reported and sometimes mitigated. Characterizing those damages and better understanding the response of germ cells and tissues to the stress of dehydration is fundamental. It will contribute to the development of optimal protocols while proving the safety of alternative storage options for fertility preservation. The objective of this review is to (1) document the types of damages and stress responses, as well as their mitigation in cells dried with different techniques, and (2) propose new research directions.
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Affiliation(s)
- Pierre Comizzoli
- Smithsonian's National Zoo and Conservation Biology Institute, Veterinary Hospital, Washington, District of Columbia, USA
| | - Olga Amelkina
- Smithsonian's National Zoo and Conservation Biology Institute, Veterinary Hospital, Washington, District of Columbia, USA
| | - Pei-Chih Lee
- Smithsonian's National Zoo and Conservation Biology Institute, Veterinary Hospital, Washington, District of Columbia, USA
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47
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Chen A, Smith JR, Tapia H, Gibney PA. Characterizing phenotypic diversity of trehalose biosynthesis mutants in multiple wild strains of Saccharomyces cerevisiae. G3 (BETHESDA, MD.) 2022; 12:jkac196. [PMID: 35929793 PMCID: PMC9635654 DOI: 10.1093/g3journal/jkac196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
In the yeast Saccharomyces cerevisiae, trehalose-6-phospahte synthase (Tps1) and trehalose-6-phosphate phosphatase (Tps2) are the main proteins catalyzing intracellular trehalose production. In addition to Tps1 and Tps2, 2 putative regulatory proteins with less clearly defined roles also appear to be involved with trehalose production, Tps3 and Tsl1. While this pathway has been extensively studied in laboratory strains of S. cerevisiae, we sought to examine the phenotypic consequences of disrupting these genes in wild strains. Here we deleted the TPS1, TPS2, TPS3, and TSL1 genes in 4 wild strains and 1 laboratory strain for comparison. Although some tested phenotypes were not shared between all strains, deletion of TPS1 abolished intracellular trehalose, caused inability to grow on fermentable carbon sources and resulted in severe sporulation deficiency for all 5 strains. After examining tps1 mutant strains expressing catalytically inactive variants of Tps1, our results indicate that Tps1, independent of trehalose production, is a key component for yeast survival in response to heat stress, for regulating sporulation, and growth on fermentable sugars. All tps2Δ mutants exhibited growth impairment on nonfermentable carbon sources, whereas variations were observed in trehalose synthesis, thermosensitivity and sporulation efficiency. tps3Δ and tsl1Δ mutants exhibited mild or no phenotypic disparity from their isogenic wild type although double mutants tps3Δ tsl1Δ decreased the amount of intracellular trehalose production in all 5 strains by 17-45%. Altogether, we evaluated, confirmed, and expanded the phenotypic characteristics associated trehalose biosynthesis mutants. We also identified natural phenotypic variants in multiple strains that could be used to genetically dissect the basis of these traits and then develop mechanistic models connecting trehalose metabolism to diverse cellular processes.
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Affiliation(s)
- Anqi Chen
- Department of Food Science, Cornell University, Ithaca, NY 14853, USA
| | - Jeremy R Smith
- Department of Food Science, Cornell University, Ithaca, NY 14853, USA
| | - Hugo Tapia
- Biology Program, California State University—Channel Islands, Camarillo, CA 93012, USA
| | - Patrick A Gibney
- Department of Food Science, Cornell University, Ithaca, NY 14853, USA
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48
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Kubczak M, Michlewska S, Karimov M, Ewe A, Aigner A, Bryszewska M, Ionov M. Comparison of tyrosine-modified low molecular weight branched and linear polyethylenimines for siRNA delivery. Nanotoxicology 2022; 16:867-882. [PMID: 36697400 DOI: 10.1080/17435390.2022.2159891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Polyethylenimines (PEIs) have been previously introduced for siRNA delivery. In particular, in the case of higher molecular weight PEIs, this is associated with toxicity, while low molecular weight PEIs are often insufficient for siRNA complexation. The tyrosine-modification of PEIs has been shown to enhance PEI efficacy and biocompatibility. This paper evaluates a set of tyrosine-modified low molecular weight linear or branched polyethylenimines as efficient carriers of siRNA. Complexation efficacies and biophysical complex properties were analyzed by zeta potential, dynamic light scattering and circular dichroism measurements as well as gel electrophoresis. Biological knockdown was studied in 2 D cell culture and 3 D ex vivo tissue slice air-liquid interface culture. The results demonstrate that siRNAs were able to form stable complexes with all tested polymers. Complexation was able to protect siRNA from degradation by RNase and to mediate target gene knockdown, as determined on the mRNA level and in PC3-Luc3/EGFP and HCT116-Luc3/EGFP expressing reporter cells on the protein level, using flow cytometry and confocal microscopy. The direct comparison of the studied polymers revealed differences in biological efficacies. Moreover, the tyrosine-modified PEIs showed high biocompatibility, as determined by LDH release and mitochondria integrity (J-aggregate assay) as well as caspase 3/7 (apoptosis) and H2O2 levels (ROS). In 3 D tissue slices, complexes based on LP10Y proved to be most efficient, by combining tissue penetration with efficient gene expression knockdown.
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Affiliation(s)
- Małgorzata Kubczak
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Sylwia Michlewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland.,Laboratory of Microscopic Imaging and Specialized Biological Techniques, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Michael Karimov
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, Faculty of Medicine, Leipzig University, Germany, Leipzig
| | - Alexander Ewe
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, Faculty of Medicine, Leipzig University, Germany, Leipzig
| | - Achim Aigner
- Rudolf-Boehm-Institute for Pharmacology and Toxicology, Clinical Pharmacology, Faculty of Medicine, Leipzig University, Germany, Leipzig
| | - Maria Bryszewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Maksim Ionov
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
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49
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Chen A, Tapia H, Goddard JM, Gibney PA. Trehalose and its applications in the food industry. Compr Rev Food Sci Food Saf 2022; 21:5004-5037. [PMID: 36201393 DOI: 10.1111/1541-4337.13048] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/29/2022] [Accepted: 08/31/2022] [Indexed: 01/28/2023]
Abstract
Trehalose is a nonreducing disaccharide composed of two glucose molecules linked by α, α-1,1-glycosidic bond. It is present in a wide variety of organisms, including bacteria, fungi, insects, plants, and invertebrate animals. Trehalose has distinct physical and chemical properties that have been investigated for their biological importance in a range of prokaryotic and eukaryotic species. Emerging research on trehalose has identified untapped opportunities for its application in the food, medical, pharmaceutical, and cosmetics industries. This review summarizes the chemical and biological properties of trehalose, its occurrence and metabolism in living organisms, its protective role in molecule stabilization, and natural and commercial production methods. Utilization of trehalose in the food industry, in particular how it stabilizes protein, fat, carbohydrate, and volatile compounds, is also discussed in depth. Challenges and opportunities of its application in specific applications (e.g., diagnostics, bioprocessing, ingredient technology) are described. We conclude with a discussion on the potential of leveraging the unique molecular properties of trehalose in molecular stabilization for improving the safety, quality, and sustainability of our food systems.
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Affiliation(s)
- Anqi Chen
- Department of Food Science, Cornell University, Ithaca, New York, USA
| | - Hugo Tapia
- Biology Program, California State University - Channel Islands, Camarillo, California, USA
| | - Julie M Goddard
- Department of Food Science, Cornell University, Ithaca, New York, USA
| | - Patrick A Gibney
- Department of Food Science, Cornell University, Ithaca, New York, USA
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50
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Tran KTM, Gavitt TD, Le TT, Graichen A, Lin F, Liu Y, Tulman ER, Szczepanek SM, Nguyen TD. A Single-Administration Microneedle Skin Patch for Multi-Burst Release of Vaccine against SARS-CoV-2. ADVANCED MATERIALS TECHNOLOGIES 2022; 8:2200905. [PMID: 36714215 PMCID: PMC9874724 DOI: 10.1002/admt.202200905] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 08/25/2022] [Indexed: 06/18/2023]
Abstract
The necessity for multiple injections and cold-chain storage has contributed to suboptimal vaccine utilization, especially in pandemic situations. Thermally-stable and single-administration vaccines hold a great potential to revolutionize the global immunization process. Here, a new approach to thermally stabilize protein-based antigens is presented and a new high-throughput antigen-loading process is devised to create a single-administration, pulsatile-release microneedle (MN) patch which can deliver a recombinant SARS-CoV-2 S1-RBD protein-a model for the COVID-19 vaccine. Nearly 100% of the protein antigen could be stabilized at temperatures up to 100 °C for at least 1 h and at an average human body temperature (37 °C) for up to 4 months. Arrays of the stabilized S1-RBD formulations can be loaded into the MN shells via a single-alignment assembly step. The fabricated MNs are administered at a single time into the skin of rats and induce antibody response which could neutralize authentic SARS-CoV-2 viruses, providing similar immunogenic effect to that induced by multiple bolus injections of the same antigen stored in conventional cold-chain conditions. The MN system presented herein could offer the key solution to global immunization campaigns by avoiding low patient compliance, the requirement for cold-chain storage, and the need for multiple booster injections.
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Affiliation(s)
- Khanh T. M. Tran
- Department of Biomedical EngineeringUniversity of Connecticut181 Auditorium RoadStorrs06269USA
| | - Tyler D. Gavitt
- Department of Pathobiology and Veterinary ScienceCenter of Excellence for Vaccine ResearchUniversity of Connecticut61 North Eagleville RoadStorrs06269USA
| | - Thinh T. Le
- Department of Mechanical EngineeringUniversity of Connecticut191 Auditorium RoadStorrs06269USA
| | - Adam Graichen
- Department of ChemistryUniversity of Connecticut55 North Eagleville RoadStorrs06269USA
| | - Feng Lin
- Department of Mechanical EngineeringUniversity of Connecticut191 Auditorium RoadStorrs06269USA
| | - Yang Liu
- Department of Mechanical EngineeringUniversity of Connecticut191 Auditorium RoadStorrs06269USA
| | - Edan R. Tulman
- Department of Pathobiology and Veterinary ScienceCenter of Excellence for Vaccine ResearchUniversity of Connecticut61 North Eagleville RoadStorrs06269USA
| | - Steven M. Szczepanek
- Department of Pathobiology and Veterinary ScienceCenter of Excellence for Vaccine ResearchUniversity of Connecticut61 North Eagleville RoadStorrs06269USA
| | - Thanh D. Nguyen
- Department of Biomedical EngineeringUniversity of Connecticut181 Auditorium RoadStorrs06269USA
- Department of Mechanical EngineeringUniversity of Connecticut191 Auditorium RoadStorrs06269USA
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