生物设计研究(英文)最新文献

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Production of Volatile Moth Sex Pheromones in Transgenic Nicotiana benthamiana Plants. 转基因烟草中挥发性蛾性信息素的产生。
生物设计研究(英文) Pub Date : 2021-10-12 eCollection Date: 2021-01-01 DOI: 10.34133/2021/9891082
Rubén Mateos-Fernández, Elena Moreno-Giménez, Silvia Gianoglio, Alfredo Quijano-Rubio, Jose Gavaldá-García, Lucía Estellés, Alba Rubert, José Luis Rambla, Marta Vazquez-Vilar, Estefanía Huet, Asunción Fernández-Del-Carmen, Ana Espinosa-Ruiz, Mojca Juteršek, Sandra Vacas, Ismael Navarro, Vicente Navarro-Llopis, Jaime Primo, Diego Orzáez
{"title":"Production of Volatile Moth Sex Pheromones in Transgenic <i>Nicotiana benthamiana</i> Plants.","authors":"Rubén Mateos-Fernández,&nbsp;Elena Moreno-Giménez,&nbsp;Silvia Gianoglio,&nbsp;Alfredo Quijano-Rubio,&nbsp;Jose Gavaldá-García,&nbsp;Lucía Estellés,&nbsp;Alba Rubert,&nbsp;José Luis Rambla,&nbsp;Marta Vazquez-Vilar,&nbsp;Estefanía Huet,&nbsp;Asunción Fernández-Del-Carmen,&nbsp;Ana Espinosa-Ruiz,&nbsp;Mojca Juteršek,&nbsp;Sandra Vacas,&nbsp;Ismael Navarro,&nbsp;Vicente Navarro-Llopis,&nbsp;Jaime Primo,&nbsp;Diego Orzáez","doi":"10.34133/2021/9891082","DOIUrl":"10.34133/2021/9891082","url":null,"abstract":"<p><p>Plant-based bioproduction of insect sex pheromones has been proposed as an innovative strategy to increase the sustainability of pest control in agriculture. Here, we describe the engineering of transgenic plants producing <i>(Z)</i>-11-hexadecenol (Z11-16OH) and <i>(Z)</i>-11-hexadecenyl acetate (Z11-16OAc), two main volatile components in many Lepidoptera sex pheromone blends. We assembled multigene DNA constructs encoding the pheromone biosynthetic pathway and stably transformed them into <i>Nicotiana benthamiana</i> plants. The constructs contained the <i>Amyelois transitella AtrΔ11</i> desaturase gene, the <i>Helicoverpa armigera</i> fatty acyl reductase <i>HarFAR</i> gene, and the <i>Euonymus alatus</i> diacylglycerol acetyltransferase <i>EaDAct</i> gene in different configurations. All the pheromone-producing plants showed dwarf phenotypes, the severity of which correlated with pheromone levels. All but one of the recovered lines produced high levels of Z11-16OH, but very low levels of Z11-16OAc, probably as a result of recurrent truncations at the level of the <i>EaDAct</i> gene. Only one plant line (SxPv1.2) was recovered that harboured an intact pheromone pathway and which produced moderate levels of Z11-16OAc (11.8 <i>μ</i>g g<sup>-1</sup> FW) and high levels of Z11-16OH (111.4 <i>μ</i>g g<sup>-1</sup>). Z11-16OAc production was accompanied in SxPv1.2 by a partial recovery of the dwarf phenotype. SxPv1.2 was used to estimate the rates of volatile pheromone release, which resulted in 8.48 ng g<sup>-1</sup> FW per day for Z11-16OH and 9.44 ng g<sup>-1</sup> FW per day for Z11-16OAc. Our results suggest that pheromone release acts as a limiting factor in pheromone biodispenser strategies and establish a roadmap for biotechnological improvements.</p>","PeriodicalId":56832,"journal":{"name":"生物设计研究(英文)","volume":"2021 ","pages":"9891082"},"PeriodicalIF":0.0,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10521740/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41241345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineering of a Promoter Repressed by a Light-Regulated Transcription Factor in Escherichia coli. 在大肠杆菌中用光调控转录因子抑制启动子的工程。
生物设计研究(英文) Pub Date : 2021-09-28 eCollection Date: 2021-01-01 DOI: 10.34133/2021/9857418
Daniel Camsund, Alfonso Jaramillo, Peter Lindblad
{"title":"Engineering of a Promoter Repressed by a Light-Regulated Transcription Factor in <i>Escherichia coli</i>.","authors":"Daniel Camsund,&nbsp;Alfonso Jaramillo,&nbsp;Peter Lindblad","doi":"10.34133/2021/9857418","DOIUrl":"10.34133/2021/9857418","url":null,"abstract":"<p><p>Light-regulated gene expression systems allow controlling gene expression in space and time with high accuracy. Contrary to previous synthetic light sensors that incorporate two-component systems which require localization at the plasma membrane, soluble one-component repression systems provide several advantageous characteristics. Firstly, they are soluble and able to diffuse across the cytoplasm. Secondly, they are smaller and of lower complexity, enabling less taxing expression and optimization of fewer parts. Thirdly, repression through steric hindrance is a widespread regulation mechanism that does not require specific interaction with host factors, potentially enabling implementation in different organisms. Herein, we present the design of the synthetic promoter P<i><sub>EL</sub></i> that in combination with the light-regulated dimer EL222 constitutes a one-component repression system. Inspired by previously engineered synthetic promoters and the <i>Escherichia coli lacZYA</i> promoter, we designed P<i><sub>EL</sub></i> with two EL222 operators positioned to hinder RNA polymerase binding when EL222 is bound. P<i><sub>EL</sub></i> is repressed by EL222 under conditions of white light with a light-regulated repression ratio of five. Further, alternating conditions of darkness and light in cycles as short as one hour showed that repression is reversible. The design of the P<i><sub>EL</sub></i>-EL222 system herein presented could aid the design and implementation of analogous one-component optogenetic repression systems. Finally, we compare the P<i><sub>EL</sub></i>-EL222 system with similar systems and suggest general improvements that could optimize and extend the functionality of EL222-based as well as other one-component repression systems.</p>","PeriodicalId":56832,"journal":{"name":"生物设计研究(英文)","volume":"2021 ","pages":"9857418"},"PeriodicalIF":0.0,"publicationDate":"2021-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10521638/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41241342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
In-Depth Computational Analysis of Natural and Artificial Carbon Fixation Pathways. 天然和人工碳固定途径的深度计算分析。
生物设计研究(英文) Pub Date : 2021-08-31 eCollection Date: 2021-01-01 DOI: 10.34133/2021/9898316
Hannes Löwe, Andreas Kremling
{"title":"In-Depth Computational Analysis of Natural and Artificial Carbon Fixation Pathways.","authors":"Hannes Löwe,&nbsp;Andreas Kremling","doi":"10.34133/2021/9898316","DOIUrl":"10.34133/2021/9898316","url":null,"abstract":"<p><p>In the recent years, engineering new-to-nature CO<sub>2</sub>- and C1-fixing metabolic pathways made a leap forward. New, artificial pathways promise higher yields and activity than natural ones like the Calvin-Benson-Bassham (CBB) cycle. The question remains how to best predict their <i>in vivo</i> performance and what actually makes one pathway \"better\" than another. In this context, we explore aerobic carbon fixation pathways by a computational approach and compare them based on their specific activity and yield on methanol, formate, and CO<sub>2</sub>/H<sub>2</sub> considering the kinetics and thermodynamics of the reactions. Besides pathways found in nature or implemented in the laboratory, this included two completely new cycles with favorable features: the reductive citramalyl-CoA cycle and the 2-hydroxyglutarate-reverse tricarboxylic acid cycle. A comprehensive kinetic data set was collected for all enzymes of all pathways, and missing kinetic data were sampled with the Parameter Balancing algorithm. Kinetic and thermodynamic data were fed to the Enzyme Cost Minimization algorithm to check for respective inconsistencies and calculate pathway-specific activities. The specific activities of the reductive glycine pathway, the CETCH cycle, and the new reductive citramalyl-CoA cycle were predicted to match the best natural cycles with superior product-substrate yield. However, the CBB cycle performed better in terms of activity compared to the alternative pathways than previously thought. We make an argument that stoichiometric yield is likely not the most important design criterion of the CBB cycle. Still, alternative carbon fixation pathways were paretooptimal for specific activity and product-substrate yield in simulations with C1 substrates and CO<sub>2</sub>/H<sub>2</sub> and therefore hold great potential for future applications in Industrial Biotechnology and Synthetic Biology.</p>","PeriodicalId":56832,"journal":{"name":"生物设计研究(英文)","volume":"2021 ","pages":"9898316"},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10521678/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41241343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Durable CRISPR-Based Epigenetic Silencing. 持久的基于CRISPR的表观遗传学沉默。
生物设计研究(英文) Pub Date : 2021-06-30 eCollection Date: 2021-01-01 DOI: 10.34133/2021/9815820
Muneaki Nakamura, Alexis E Ivec, Yuchen Gao, Lei S Qi
{"title":"Durable CRISPR-Based Epigenetic Silencing.","authors":"Muneaki Nakamura,&nbsp;Alexis E Ivec,&nbsp;Yuchen Gao,&nbsp;Lei S Qi","doi":"10.34133/2021/9815820","DOIUrl":"https://doi.org/10.34133/2021/9815820","url":null,"abstract":"<p><p>Development of CRISPR-based epigenome editing tools is important for the study and engineering of biological behavior. Here, we describe the design of a reporter system for quantifying the ability of CRISPR epigenome editors to produce a stable gene repression. We characterize the dynamics of durable gene silencing and reactivation, as well as the induced epigenetic changes of this system. We report the creation of single-protein CRISPR constructs bearing combinations of three epigenetic editing domains, termed KAL, that can stably repress the gene expression. This system should allow for the development of novel epigenome editing tools which will be useful in a wide array of biological research and engineering applications.</p>","PeriodicalId":56832,"journal":{"name":"生物设计研究(英文)","volume":"2021 ","pages":"9815820"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10521745/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41241341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Phagocytosed Polyhedrin-Cytokine Cocrystal Nanoparticles Provide Sustained Secretion of Bioactive Cytokines from Macrophages. 吞噬细胞的多角体细胞因子共晶纳米粒子提供从巨噬细胞中持续分泌生物活性细胞因子。
生物设计研究(英文) Pub Date : 2021-05-14 eCollection Date: 2021-01-01 DOI: 10.34133/2021/9816485
Astrid Wendler, Nicholas James, Michael H Jones, Christian Pernstich
{"title":"Phagocytosed Polyhedrin-Cytokine Cocrystal Nanoparticles Provide Sustained Secretion of Bioactive Cytokines from Macrophages.","authors":"Astrid Wendler,&nbsp;Nicholas James,&nbsp;Michael H Jones,&nbsp;Christian Pernstich","doi":"10.34133/2021/9816485","DOIUrl":"10.34133/2021/9816485","url":null,"abstract":"<p><p>Many cells possess the ability to engulf and incorporate particles by phagocytosis. This active process is characteristic of microorganisms as well as higher order species. In mammals, monocytes, macrophages, and microglia are among the so-called professional phagocytes. In addition, cells such as fibroblast and chondrocytes are classified as nonprofessional phagocytes. Professional phagocytes play important roles in both the innate and adaptive immune responses, wound healing, and tissue homeostasis. Consequently, these cells are increasingly studied as targets and vectors of therapeutic intervention to treat a range of diseases. Professional phagocytes are notoriously difficult to transfect limiting their study and manipulation. Consequently, efforts have shifted towards the development of nanoparticles to deliver a cargo to phagocytic cells via phagocytosis. However, this approach carries significant technical challenges, particularly for protein cargos. We have focused on the development of nanoscale cocrystalline protein depots, known as PODS®, that contain protein cargos, including cytokines. Here, we show that PODS are readily phagocytosed by nonprofessional as well as professional phagocytic cells and have attributes, such as highly sustained release of cargo, that suggest potential utility for the study and exploitation of phagocytic cells for drug delivery. Monocytes and macrophages that ingest PODS retain normal characteristics including a robust chemotactic response. Moreover, the PODS-cytokine cargo is secreted by the loaded cell at a level sufficient to modulate the behavior of surrounding nonphagocytic cells. The results presented here demonstrate the potential of PODS nanoparticles as a novel molecular tool for the study and manipulation of phagocytic cells and for the development of Trojan horse immunotherapy strategies to treat cancer and other diseases.</p>","PeriodicalId":56832,"journal":{"name":"生物设计研究(英文)","volume":"2021 ","pages":"9816485"},"PeriodicalIF":0.0,"publicationDate":"2021-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10521757/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41241344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
CFPU: A Cell-Free Processing Unit for High-Throughput, Automated In Vitro Circuit Characterization in Steady-State Conditions. CFPU:一种在稳态条件下进行高通量、自动化体外电路表征的无细胞处理单元。
生物设计研究(英文) Pub Date : 2021-03-17 eCollection Date: 2021-01-01 DOI: 10.34133/2021/2968181
Zoe Swank, Sebastian J Maerkl
{"title":"CFPU: A Cell-Free Processing Unit for High-Throughput, Automated In Vitro Circuit Characterization in Steady-State Conditions.","authors":"Zoe Swank,&nbsp;Sebastian J Maerkl","doi":"10.34133/2021/2968181","DOIUrl":"10.34133/2021/2968181","url":null,"abstract":"<p><p>Forward engineering synthetic circuits are at the core of synthetic biology. Automated solutions will be required to facilitate circuit design and implementation. Circuit design is increasingly being automated with design software, but innovations in experimental automation are lagging behind. Microfluidic technologies made it possible to perform <i>in vitro</i> transcription-translation (tx-tl) reactions with increasing throughput and sophistication, enabling screening and characterization of individual circuit elements and complete circuit designs. Here, we developed an automated microfluidic cell-free processing unit (CFPU) that extends high-throughput screening capabilities to a steady-state reaction environment, which is essential for the implementation and analysis of more complex and dynamic circuits. The CFPU contains 280 chemostats that can be individually programmed with DNA circuits. Each chemostat is periodically supplied with tx-tl reagents, giving rise to sustained, long-term steady-state conditions. Using microfluidic pulse width modulation (PWM), the device is able to generate tx-tl reagent compositions in real time. The device has higher throughput, lower reagent consumption, and overall higher functionality than current chemostat devices. We applied this technology to map transcription factor-based repression under equilibrium conditions and implemented dynamic gene circuits switchable by small molecules. We expect the CFPU to help bridge the gap between circuit design and experimental automation for <i>in vitro</i> development of synthetic gene circuits.</p>","PeriodicalId":56832,"journal":{"name":"生物设计研究(英文)","volume":"2021 ","pages":"2968181"},"PeriodicalIF":0.0,"publicationDate":"2021-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10521719/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41241339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Plant Biosystems Design Research Roadmap 1.0. 植物生物系统设计研究路线图1.0。
生物设计研究(英文) Pub Date : 2020-12-05 eCollection Date: 2020-01-01 DOI: 10.34133/2020/8051764
Xiaohan Yang, June I Medford, Kasey Markel, Patrick M Shih, Henrique C De Paoli, Cong T Trinh, Alistair J McCormick, Raphael Ployet, Steven G Hussey, Alexander A Myburg, Poul Erik Jensen, Md Mahmudul Hassan, Jin Zhang, Wellington Muchero, Udaya C Kalluri, Hengfu Yin, Renying Zhuo, Paul E Abraham, Jin-Gui Chen, David J Weston, Yinong Yang, Degao Liu, Yi Li, Jessy Labbe, Bing Yang, Jun Hyung Lee, Robert W Cottingham, Stanton Martin, Mengzhu Lu, Timothy J Tschaplinski, Guoliang Yuan, Haiwei Lu, Priya Ranjan, Julie C Mitchell, Stan D Wullschleger, Gerald A Tuskan
{"title":"Plant Biosystems Design Research Roadmap 1.0.","authors":"Xiaohan Yang, June I Medford, Kasey Markel, Patrick M Shih, Henrique C De Paoli, Cong T Trinh, Alistair J McCormick, Raphael Ployet, Steven G Hussey, Alexander A Myburg, Poul Erik Jensen, Md Mahmudul Hassan, Jin Zhang, Wellington Muchero, Udaya C Kalluri, Hengfu Yin, Renying Zhuo, Paul E Abraham, Jin-Gui Chen, David J Weston, Yinong Yang, Degao Liu, Yi Li, Jessy Labbe, Bing Yang, Jun Hyung Lee, Robert W Cottingham, Stanton Martin, Mengzhu Lu, Timothy J Tschaplinski, Guoliang Yuan, Haiwei Lu, Priya Ranjan, Julie C Mitchell, Stan D Wullschleger, Gerald A Tuskan","doi":"10.34133/2020/8051764","DOIUrl":"10.34133/2020/8051764","url":null,"abstract":"<p><p>Human life intimately depends on plants for food, biomaterials, health, energy, and a sustainable environment. Various plants have been genetically improved mostly through breeding, along with limited modification via genetic engineering, yet they are still not able to meet the ever-increasing needs, in terms of both quantity and quality, resulting from the rapid increase in world population and expected standards of living. A step change that may address these challenges would be to expand the potential of plants using biosystems design approaches. This represents a shift in plant science research from relatively simple trial-and-error approaches to innovative strategies based on predictive models of biological systems. Plant biosystems design seeks to accelerate plant genetic improvement using genome editing and genetic circuit engineering or create novel plant systems through <i>de novo</i> synthesis of plant genomes. From this perspective, we present a comprehensive roadmap of plant biosystems design covering theories, principles, and technical methods, along with potential applications in basic and applied plant biology research. We highlight current challenges, future opportunities, and research priorities, along with a framework for international collaboration, towards rapid advancement of this emerging interdisciplinary area of research. Finally, we discuss the importance of social responsibility in utilizing plant biosystems design and suggest strategies for improving public perception, trust, and acceptance.</p>","PeriodicalId":56832,"journal":{"name":"生物设计研究(英文)","volume":"2020 ","pages":"8051764"},"PeriodicalIF":0.0,"publicationDate":"2020-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10521729/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41241333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biosystems Design to Accelerate C3-to-CAM Progression. 加速C3向CAM发展的生物系统设计。
生物设计研究(英文) Pub Date : 2020-10-10 eCollection Date: 2020-01-01 DOI: 10.34133/2020/3686791
Guoliang Yuan, Md Mahmudul Hassan, Degao Liu, Sung Don Lim, Won Cheol Yim, John C Cushman, Kasey Markel, Patrick M Shih, Haiwei Lu, David J Weston, Jin-Gui Chen, Timothy J Tschaplinski, Gerald A Tuskan, Xiaohan Yang
{"title":"Biosystems Design to Accelerate C<sub>3</sub>-to-CAM Progression.","authors":"Guoliang Yuan, Md Mahmudul Hassan, Degao Liu, Sung Don Lim, Won Cheol Yim, John C Cushman, Kasey Markel, Patrick M Shih, Haiwei Lu, David J Weston, Jin-Gui Chen, Timothy J Tschaplinski, Gerald A Tuskan, Xiaohan Yang","doi":"10.34133/2020/3686791","DOIUrl":"10.34133/2020/3686791","url":null,"abstract":"<p><p>Global demand for food and bioenergy production has increased rapidly, while the area of arable land has been declining for decades due to damage caused by erosion, pollution, sea level rise, urban development, soil salinization, and water scarcity driven by global climate change. In order to overcome this conflict, there is an urgent need to adapt conventional agriculture to water-limited and hotter conditions with plant crop systems that display higher water-use efficiency (WUE). Crassulacean acid metabolism (CAM) species have substantially higher WUE than species performing C<sub>3</sub> or C<sub>4</sub> photosynthesis. CAM plants are derived from C<sub>3</sub> photosynthesis ancestors. However, it is extremely unlikely that the C<sub>3</sub> or C<sub>4</sub> crop plants would evolve rapidly into CAM photosynthesis without human intervention. Currently, there is growing interest in improving WUE through transferring CAM into C<sub>3</sub> crops. However, engineering a major metabolic plant pathway, like CAM, is challenging and requires a comprehensive deep understanding of the enzymatic reactions and regulatory networks in both C<sub>3</sub> and CAM photosynthesis, as well as overcoming physiometabolic limitations such as diurnal stomatal regulation. Recent advances in CAM evolutionary genomics research, genome editing, and synthetic biology have increased the likelihood of successful acceleration of C<sub>3</sub>-to-CAM progression. Here, we first summarize the systems biology-level understanding of the molecular processes in the CAM pathway. Then, we review the principles of CAM engineering in an evolutionary context. Lastly, we discuss the technical approaches to accelerate the C<sub>3</sub>-to-CAM transition in plants using synthetic biology toolboxes.</p>","PeriodicalId":56832,"journal":{"name":"生物设计研究(英文)","volume":"2020 ","pages":"3686791"},"PeriodicalIF":0.0,"publicationDate":"2020-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10521703/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41241329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineering a Circular Riboregulator in Escherichia coli. 在大肠杆菌中设计一种环状核糖核酸调节器。
生物设计研究(英文) Pub Date : 2020-09-12 eCollection Date: 2020-01-01 DOI: 10.34133/2020/1916789
William Rostain, Shensi Shen, Teresa Cordero, Guillermo Rodrigo, Alfonso Jaramillo
{"title":"Engineering a Circular Riboregulator in <i>Escherichia coli</i>.","authors":"William Rostain,&nbsp;Shensi Shen,&nbsp;Teresa Cordero,&nbsp;Guillermo Rodrigo,&nbsp;Alfonso Jaramillo","doi":"10.34133/2020/1916789","DOIUrl":"10.34133/2020/1916789","url":null,"abstract":"<p><p>RNAs of different shapes and sizes, natural or synthetic, can regulate gene expression in prokaryotes and eukaryotes. Circular RNAs have recently appeared to be more widespread than previously thought, but their role in prokaryotes remains elusive. Here, by inserting a riboregulatory sequence within a group I permuted intron-exon ribozyme, we created a small noncoding RNA that self-splices to produce a circular riboregulator in <i>Escherichia coli</i>. We showed that the resulting riboregulator can <i>trans</i>-activate gene expression by interacting with a <i>cis</i>-repressed messenger RNA. We characterized the system with a fluorescent reporter and with an antibiotic resistance marker, and we modeled this novel posttranscriptional mechanism. This first reported example of a circular RNA regulating gene expression in <i>E. coli</i> adds to an increasing repertoire of RNA synthetic biology parts, and it highlights that topological molecules can play a role in the case of prokaryotic regulation.</p>","PeriodicalId":56832,"journal":{"name":"生物设计研究(英文)","volume":"2020 ","pages":"1916789"},"PeriodicalIF":0.0,"publicationDate":"2020-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10521646/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41241331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Reconfiguring Plant Metabolism for Biodegradable Plastic Production. 可生物降解塑料生产的植物代谢重构。
生物设计研究(英文) Pub Date : 2020-08-04 eCollection Date: 2020-01-01 DOI: 10.34133/2020/9078303
Haiwei Lu, Guoliang Yuan, Steven H Strauss, Timothy J Tschaplinski, Gerald A Tuskan, Jin-Gui Chen, Xiaohan Yang
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