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Nicotiana benthamiana as a potential source for producing anti-dengue virus D54 neutralizing therapeutic antibody 作为生产抗登革病毒 D54 中和治疗性抗体潜在来源的烟草
Biotechnology Reports Pub Date : 2024-06-01 DOI: 10.1016/j.btre.2024.e00844
Supaluk Krittanai , Kaewta Rattanapisit , Christine Joy I. Bulaon , Pannamthip Pitaksajjakul , Sujitra Keadsanti , Pongrama Ramasoota , Richard Strasser , Waranyoo Phoolcharoen
{"title":"Nicotiana benthamiana as a potential source for producing anti-dengue virus D54 neutralizing therapeutic antibody","authors":"Supaluk Krittanai ,&nbsp;Kaewta Rattanapisit ,&nbsp;Christine Joy I. Bulaon ,&nbsp;Pannamthip Pitaksajjakul ,&nbsp;Sujitra Keadsanti ,&nbsp;Pongrama Ramasoota ,&nbsp;Richard Strasser ,&nbsp;Waranyoo Phoolcharoen","doi":"10.1016/j.btre.2024.e00844","DOIUrl":"https://doi.org/10.1016/j.btre.2024.e00844","url":null,"abstract":"<div><p>Dengue virus (DENV), transmitted by mosquitoes, is classified into four serotypes (DENV1-4) and typically causes mild, self-limiting symptoms upon initial infection. However, secondary infection can lead to severe symptoms due to antibody-dependent enhancement (ADE). To address this, anti-DENV antibodies are being developed with the goal of neutralizing infection without ADE activity. Previous attempts using a 54_hG1 antibody from CHO-K1 mammalian cells resulted in ADE induction, increasing viral infection. This study aimed to express the D54 monoclonal antibody in <em>Nicotiana benthamiana</em>. The plant-produced antibody had a similar neutralizing profile to the previous 54_hG1 antibody. Notably, the ADE activities of the plant-derived antibody were successfully eliminated, with no sign of viral induction. These findings suggest that <em>N. benthamiana</em> could be a source of therapeutic DENV antibodies. The method offers several advantages, including lower ADE, cost-effectiveness, simple facility requirements, scalability, and potential industrial-scale production in GMP facilities.</p></div>","PeriodicalId":38117,"journal":{"name":"Biotechnology Reports","volume":"42 ","pages":"Article e00844"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215017X24000171/pdfft?md5=79ca3b41102380b3caadfc2baf6a7293&pid=1-s2.0-S2215017X24000171-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141240181","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
Alfin-like (AL) transcription factor family in Oryza sativa L.: Genome-wide analysis and expression profiling under different stresses Oryza sativa L. 的 Alfin-like (AL) 转录因子家族:不同胁迫下的全基因组分析和表达谱分析
Biotechnology Reports Pub Date : 2024-05-29 DOI: 10.1016/j.btre.2024.e00845
Jeba Faizah Rahman , Hammadul Hoque , Abdullah -Al- Jubayer , Nurnabi Azad Jewel , Md. Nazmul Hasan , Aniqua Tasnim Chowdhury , Shamsul H. Prodhan
{"title":"Alfin-like (AL) transcription factor family in Oryza sativa L.: Genome-wide analysis and expression profiling under different stresses","authors":"Jeba Faizah Rahman ,&nbsp;Hammadul Hoque ,&nbsp;Abdullah -Al- Jubayer ,&nbsp;Nurnabi Azad Jewel ,&nbsp;Md. Nazmul Hasan ,&nbsp;Aniqua Tasnim Chowdhury ,&nbsp;Shamsul H. Prodhan","doi":"10.1016/j.btre.2024.e00845","DOIUrl":"https://doi.org/10.1016/j.btre.2024.e00845","url":null,"abstract":"<div><p><em>Oryza sativa</em> L. is the world's most essential and economically important food crop. Climate change and ecological imbalances make rice plants vulnerable to abiotic and biotic stresses, threatening global food security. The Alfin-like (AL) transcription factor family plays a crucial role in plant development and stress responses. This study comprehensively analyzed this gene family and their expression profiles in rice, revealing nine AL genes, classifying them into three distinct groups based on phylogenetic analysis and identifying four segmental duplication events. RNA-seq data analysis revealed high expression levels of OsALs in different tissues, growth stages, and their responsiveness to stresses. RT-qPCR data showed significant expression of OsALs in different abiotic stresses. Identification of potential <em>cis</em>-regulatory elements in promoter regions has also unveiled their involvement. Tertiary structures of the proteins were predicted. These findings would lay the groundwork for future research to reveal their molecular mechanism in stress tolerance and plant development.</p></div>","PeriodicalId":38117,"journal":{"name":"Biotechnology Reports","volume":"43 ","pages":"Article e00845"},"PeriodicalIF":0.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215017X24000183/pdfft?md5=4b15e06ee7f913d21e9b87317c57fc37&pid=1-s2.0-S2215017X24000183-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141289269","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
Secondary metabolite profiling using HR-LCMS, antioxidant and anticancer activity of Bacillus cereus PSMS6 methanolic extract: In silico and in vitro study 利用 HR-LCMS 分析蜡样芽孢杆菌 PSMS6 甲醇提取物的次生代谢物特征、抗氧化和抗癌活性:硅学和体外研究
Biotechnology Reports Pub Date : 2024-05-02 DOI: 10.1016/j.btre.2024.e00842
Shalini TS , Manivel G , Krishna kumar G , Prathiviraj Ragothaman , Rajesh Kannan Velu , Senthilraja P
{"title":"Secondary metabolite profiling using HR-LCMS, antioxidant and anticancer activity of Bacillus cereus PSMS6 methanolic extract: In silico and in vitro study","authors":"Shalini TS ,&nbsp;Manivel G ,&nbsp;Krishna kumar G ,&nbsp;Prathiviraj Ragothaman ,&nbsp;Rajesh Kannan Velu ,&nbsp;Senthilraja P","doi":"10.1016/j.btre.2024.e00842","DOIUrl":"https://doi.org/10.1016/j.btre.2024.e00842","url":null,"abstract":"<div><p>Novel anticancer drugs of natural origin have increased tremendously due to the resistance of multiple chemotherapeutic drugs in breast cancer therapy and their high toxicity with undesirable side effects. The study investigates the bioactivity of secondary metabolites derived from <em>Bacillus cereus</em> PSMS6 isolated from marine soil sediment in the Velar estuary, Parangepattai, Cuddalore district, Tamil Nadu, and India. Strains were isolated and antagonistic activity was screened using the agar well diffusion method. <em>B. cereus</em> PSMS6 exhibited potency, and its crude extract was tested for antioxidant, anticancer, and cytotoxic MTT assay potential. The methanolic extract of <em>B. cereus</em> PSMS6 was analyzed by mass spectrometry HRLC-MS and FT-IR to determine the bioactive compounds. A drug interaction study with the anti-breast cancer protein HER2 was performed by molecular docking analysis. Antioxidant activities were determined using total antioxidant scavenging assay, ABTS and DPPH free radical scavenging assays. The total antioxidant scavenging assay of the crude extract of <em>B. cereus</em> methanol had an IC<sub>50</sub> value of 28.33±1.01, in ABTS IC<sub>50</sub> value of the extract was 29.00±0.28 and in DPPH the IC<sub>50</sub> of the extract was 34.91±0.09. The negative ion compound Palmitoylglycerone phosphate had a LibDock score of 149.487 and the positive ion compound N5-(4-Methoxybenzyl) glutamine had 120.116. These compounds show promising anticancer activity. The current study reported that the bioactive secondary metabolite of <em>B. cereus</em> PSMS6 retains anti-cancer, and antioxidant properties. This is the first report to show the production of the Palmitoylglycerone phosphate metabolite from <em>B. cereus</em> PSMS6.</p></div>","PeriodicalId":38117,"journal":{"name":"Biotechnology Reports","volume":"42 ","pages":"Article e00842"},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215017X24000158/pdfft?md5=616ca192af261c51db9f98b7b20f5273&pid=1-s2.0-S2215017X24000158-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140910200","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
Characterization of plant produced VHH antibodies against cobra venom toxins for antivenom therapy 用于抗蛇毒血清疗法的针对眼镜蛇毒液毒素的植物生产型 VHH 抗体的特征描述
Biotechnology Reports Pub Date : 2024-04-16 DOI: 10.1016/j.btre.2024.e00841
Sarocha Vitayathikornnasak , Kaewta Rattanapisit , Ashwini Malla , Pipob Suwanchaikasem , Richard Strasser , Narach Khorattanakulchai , Kanokporn Pothisamutyothin , Wanatchaporn Arunmanee , Waranyoo Phoolcharoen
{"title":"Characterization of plant produced VHH antibodies against cobra venom toxins for antivenom therapy","authors":"Sarocha Vitayathikornnasak ,&nbsp;Kaewta Rattanapisit ,&nbsp;Ashwini Malla ,&nbsp;Pipob Suwanchaikasem ,&nbsp;Richard Strasser ,&nbsp;Narach Khorattanakulchai ,&nbsp;Kanokporn Pothisamutyothin ,&nbsp;Wanatchaporn Arunmanee ,&nbsp;Waranyoo Phoolcharoen","doi":"10.1016/j.btre.2024.e00841","DOIUrl":"https://doi.org/10.1016/j.btre.2024.e00841","url":null,"abstract":"<div><p>Cobra (<em>Naja kaouthia</em>) venom contains many toxins including α-neurotoxin (αNTX) and phospholipase A2 (PLA2), which can cause neurodegeneration, respiratory failure, and even death. The traditional antivenom derived from animal serum faces many challenges and limitations. Heavy-chain-only antibodies (HCAb), fusing V<sub>HH</sub> with human IgG Fc region, offer advantages in tissue penetration, antigen binding, and extended half-life. This research involved the construction and transient expression of two types of V<sub>HH</sub>-F<sub>C</sub> which are specific to α-Neurotoxin (V<sub>HH</sub>-αNTX-F<sub>C</sub>) and Phospholipase A2 (V<sub>HH</sub>-PLA2-F<sub>C</sub>) in <em>Nicotiana benthamiana</em> leaves. The recombinant HCAbs were incubated for up to six days to optimize expression levels followed by purification by affinity chromatography and characterization using LC/Q-TOF mass spectrometry (MS). Purified proteins demonstrated over 92 % sequence coverage and an average mass of around 82 kDa with a high-mannose N-glycan profile. An antigen binding assay showed that the V<sub>HH</sub>-αNTX-Fc has a greater ability to bind to crude venom than V<sub>HH</sub>-PLA2-Fc.</p></div>","PeriodicalId":38117,"journal":{"name":"Biotechnology Reports","volume":"42 ","pages":"Article e00841"},"PeriodicalIF":0.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215017X24000146/pdfft?md5=118770804465782939c653851a16cfe8&pid=1-s2.0-S2215017X24000146-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140647386","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
Identification and characterisation of moderately thermostable diisobutyl phthalate degrading esterase from a Great Artesian Basin Bacillus velezensis NP05 大自流盆地芽孢杆菌 Velezensis NP05 中具有中度恒温性的邻苯二甲酸二异丁酯降解酯酶的鉴定和特性分析
Biotechnology Reports Pub Date : 2024-04-04 DOI: 10.1016/j.btre.2024.e00840
Brandon Mu , Pawel Sadowski , Junior Te'o , Bharat Patel , Nayana Pathiraja , Kevin Dudley
{"title":"Identification and characterisation of moderately thermostable diisobutyl phthalate degrading esterase from a Great Artesian Basin Bacillus velezensis NP05","authors":"Brandon Mu ,&nbsp;Pawel Sadowski ,&nbsp;Junior Te'o ,&nbsp;Bharat Patel ,&nbsp;Nayana Pathiraja ,&nbsp;Kevin Dudley","doi":"10.1016/j.btre.2024.e00840","DOIUrl":"https://doi.org/10.1016/j.btre.2024.e00840","url":null,"abstract":"<div><p>Phthalate esters are known to be endocrine disrupting chemicals and are documented to pollute environments. Enzymatic degradation of PAEs is a potential bioremedial strategy to manage contamination. Thermostable bioremedial enzymes have advantages in enzyme manufacturing and storage. In this study, we identified, overexpressed, and characterised a moderately thermostable para-nitrobenzyl esterase from whole genome sequencing of a <em>Bacillus velezensis</em> NP05 from the Great Artesian Basin<em>,</em> capable of sequential 2-step hydrolysis of diisobutyl phthalate. The pnbA enzyme has a molecular weight of 55.14 kDa and pI of 5.31. It preferentially degrades para-nitrophenyl butanoate and has an optimal pH of 7–8. The pnbA esterase has an optimal temperature of 55 °C with a half-life of 4 h. Using HPLC we found that pnbA (0.122 U) can hydrolyse 0.83 mM of DIBP within 25 min. Lastly, pnbA is potentially a more economically viable candidate for enzymatic bioremediation of diisobutyl phthalate as a free enzyme.</p></div>","PeriodicalId":38117,"journal":{"name":"Biotechnology Reports","volume":"42 ","pages":"Article e00840"},"PeriodicalIF":0.0,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215017X24000134/pdfft?md5=d146a82ef802ac54b9bc95075c82f54e&pid=1-s2.0-S2215017X24000134-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140550345","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
Exploring the biotechnological potential of Acinetobacter soli ANG344B: A novel bacterium for 2-phenylethanol production 探索溶生不动杆菌 ANG344B 的生物技术潜力:一种生产 2-苯基乙醇的新型细菌
Biotechnology Reports Pub Date : 2024-04-04 DOI: 10.1016/j.btre.2024.e00839
Ana R.S. Bernardino , Filipa Grosso , Cristiana A.V. Torres , Maria A.M. Reis , Luísa Peixe
{"title":"Exploring the biotechnological potential of Acinetobacter soli ANG344B: A novel bacterium for 2-phenylethanol production","authors":"Ana R.S. Bernardino ,&nbsp;Filipa Grosso ,&nbsp;Cristiana A.V. Torres ,&nbsp;Maria A.M. Reis ,&nbsp;Luísa Peixe","doi":"10.1016/j.btre.2024.e00839","DOIUrl":"https://doi.org/10.1016/j.btre.2024.e00839","url":null,"abstract":"<div><p>A bacterium, <em>Acinetobacter soli</em> ANG344B, isolated from river water, exhibited an exceptional capacity to produce 2-phenylethanol (2-PE) using L-phenylalanine (L-Phe) as a precursor—a capability typically observed in yeasts rather than bacteria. Bioreactor experiments were conducted to evaluate the production performance, using glucose as the carbon source for cellular growth and L-Phe as the precursor for 2-PE production. Remarkably, <em>A. soli</em> ANG344B achieved a 2-PE concentration of 2.35 ± 0.26 g/L in just 24.5 h of cultivation, exhibiting a global volumetric productivity of 0.10 ± 0.01 g/L.h and a production yield of 0.51 ± 0.01 g<sub>2-PE</sub>/g<sub>L-Phe</sub>, a result hitherto reported only for yeasts. These findings position <em>A. soli</em> ANG344B as a highly promising microorganism for 2-PE production.</p><p>Whole-genome sequencing of <em>A. soli</em> strain ANG344 revealed a genome size of 3.52 Mb with a GC content of 42.7 %. Utilizing the Rapid Annotation using Subsystem Technology (RAST) server, 3418 coding genes were predicted, including genes coding for enzymes previously associated with the metabolic pathway of 2-PE production in other microorganisms, yet unreported in <em>Acinetobacter</em> species. Through gene mapping, 299 subsystems were identified, exhibiting 30 % subsystem coverage. The whole genome sequence data was submitted to NCBI GeneBank with the BioProject ID PRJNA982713. These draft genome data offer significant potential for exploiting the biotechnological capabilities of <em>A. soli</em> strain ANG344 and for conducting further comparative genomic studies.</p></div>","PeriodicalId":38117,"journal":{"name":"Biotechnology Reports","volume":"42 ","pages":"Article e00839"},"PeriodicalIF":0.0,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215017X24000122/pdfft?md5=0c3109ef2bd5d3e299cf15fc1386fa62&pid=1-s2.0-S2215017X24000122-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140540608","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
Biosynthesis, characterization and study of the application of silver nanoparticle for 4-nitrophenol reduction, and antimicrobial activities 用于还原 4-硝基苯酚的银纳米粒子的生物合成、表征和应用研究以及抗菌活性
Biotechnology Reports Pub Date : 2024-03-21 DOI: 10.1016/j.btre.2024.e00838
Mengistu Mulu , Molla Tefera , Atnafu Guadie , K. Basavaiah
{"title":"Biosynthesis, characterization and study of the application of silver nanoparticle for 4-nitrophenol reduction, and antimicrobial activities","authors":"Mengistu Mulu ,&nbsp;Molla Tefera ,&nbsp;Atnafu Guadie ,&nbsp;K. Basavaiah","doi":"10.1016/j.btre.2024.e00838","DOIUrl":"10.1016/j.btre.2024.e00838","url":null,"abstract":"<div><p>Silver nanoparticles (AgNPs) were synthesized from <em>Vigna unguiculata</em> (L) Walp extracted leaves, and characterized. The UV–Visible spectrum showed a peak between 411 and 415 nm at the Plasmon absorbance of the AgNPs. TEM showed that the size of AgNPs ranged from 5 to 13 nm. It was spherical with an average size of 11.08 nm. The size of AgNPs was 7 ± 6 nm and disperse in water. The AgNPs effectively reduced 4-Nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of NaBH<sub>4</sub>. The AgNPs exhibited a strong antioxidant and antibacterial activity against Gram-negative bacteria: <em>Escherichia coli</em> (E. coli) and Klebsiella pneumonia and Gram-positive: <em>Bacillus pumilus</em> and <em>Staphylococcus aureus</em>. The average zones of inhibition of AgNPs were: 29 mm for <em>Staphylococcus aureus</em>, 23 mm for <em>Bacillus pumilus</em>, 17 mm for Klebsiella pneumonia and 15 mm for <em>Escherichia coli</em> (E. coli). Thus, AgNPs has exhibted good antibacterial activity compared to antibiotics drug and 4-NP reduction.</p></div>","PeriodicalId":38117,"journal":{"name":"Biotechnology Reports","volume":"42 ","pages":"Article e00838"},"PeriodicalIF":0.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215017X24000110/pdfft?md5=0060179eecd2a93cd27ee4c3ba2eade0&pid=1-s2.0-S2215017X24000110-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140279213","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
Recent advances and potential applications for metal-organic framework (MOFs) and MOFs-derived materials: Characterizations and antimicrobial activities 金属有机框架 (MOF) 和 MOF 衍生材料的最新进展和潜在应用:表征和抗菌活性
Biotechnology Reports Pub Date : 2024-03-20 DOI: 10.1016/j.btre.2024.e00837
Muhammad Hubab, Mohammad A. Al-Ghouti
{"title":"Recent advances and potential applications for metal-organic framework (MOFs) and MOFs-derived materials: Characterizations and antimicrobial activities","authors":"Muhammad Hubab,&nbsp;Mohammad A. Al-Ghouti","doi":"10.1016/j.btre.2024.e00837","DOIUrl":"10.1016/j.btre.2024.e00837","url":null,"abstract":"<div><p>Microbial infections, particularly those caused by antibiotic-resistant pathogens, pose a critical global health threat. Metal-Organic Frameworks (MOFs), porous crystalline structures built from metal ions and organic linkers, initially developed for gas adsorption, have emerged as promising alternatives to traditional antibiotics. This review, covering research up to 2023, explores the potential of MOFs and MOF-based materials as broad-spectrum antimicrobial agents against bacteria, viruses, fungi, and even parasites. It delves into the historical context of antimicrobial agents, recent advancements in MOF research, and the diverse synthesis techniques employed for their production. Furthermore, the review comprehensively analyzes the mechanisms of action by which MOFs combat various microbial threats. By highlighting the vast potential of MOFs, their diverse synthesis methods, and their effectiveness against various pathogens, this study underscores their potential as a novel solution to the growing challenge of antibiotic resistance.</p></div>","PeriodicalId":38117,"journal":{"name":"Biotechnology Reports","volume":"42 ","pages":"Article e00837"},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215017X24000109/pdfft?md5=937c1f96dfde24dc8ffa6a920eb5b8f7&pid=1-s2.0-S2215017X24000109-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140272098","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
Using CO2 level monitoring to adjust the stress conditions of morbidostats 利用二氧化碳水平监测调整病态恒温器的应激条件
Biotechnology Reports Pub Date : 2024-03-16 DOI: 10.1016/j.btre.2024.e00836
Kerem Bora
{"title":"Using CO2 level monitoring to adjust the stress conditions of morbidostats","authors":"Kerem Bora","doi":"10.1016/j.btre.2024.e00836","DOIUrl":"https://doi.org/10.1016/j.btre.2024.e00836","url":null,"abstract":"<div><p>In a conventional morbidostat, cell growth is monitored by measuring OD, and stress conditions are automatically adjusted using OD values. However, phenomena such as biofilm formation, agglomeration, and the presence of opaque substrates or products can result in inaccurate OD measurements of population size, causing morbidostat systems to fail to adjust stress conditions appropriately.</p><p>This study offers a solution for circumstances where it is impractical to determine vital activity based on OD by developing a novel morbidostat system that adjusts stress conditions based on measurements of exhaust CO<sub>2</sub>. As a proof of concept, the adaptation of <em>E. coli</em> ATCC 47076 to 48 °C was performed with two morbidostats using this new strategy. Both populations evolved in the morbidostats were confirmed to grow at 48 °C, a temperature their ancestral strain cannot withstand.</p></div>","PeriodicalId":38117,"journal":{"name":"Biotechnology Reports","volume":"42 ","pages":"Article e00836"},"PeriodicalIF":0.0,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215017X24000092/pdfft?md5=4f2c287d2400180f0dac06186c8cad81&pid=1-s2.0-S2215017X24000092-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140209114","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
The role and mechanisms of microbes in dichlorodiphenyltrichloroethane (DDT) and its residues bioremediation 微生物在二氯二苯基三氯乙烷(DDT)及其残留物生物修复中的作用和机制
Biotechnology Reports Pub Date : 2024-03-11 DOI: 10.1016/j.btre.2024.e00835
Girma Ebsa , Birhanu Gizaw , Mesele Admassie , Tizazu Degu , Tesfaye Alemu
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