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Duckweeds as edible vaccines in the animal farming industry. 鸭茅作为动物养殖业的食用疫苗。
IF 2.6 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-06 DOI: 10.1007/s13205-024-04074-8
Anca Awal Sembada, Yohanes Theda, Ahmad Faizal

Animal diseases are among the most debilitating issues in the animal farming industry, resulting in decreased productivity and product quality worldwide. An emerging alternative to conventional injectable vaccines is edible vaccines, which promise increased delivery efficiency while maintaining vaccine effectiveness. One of the most promising platforms for edible vaccines is duckweeds, due to their high growth rate, ease of transformation, and excellent nutritional content. This review explores the potential, feasibility, and advantages of using duckweeds as platforms for edible vaccines. Duckweeds have proven to be superb feed sources, as evidenced by numerous improvements in both quantity (e.g., weight gain) and quality (e.g., yolk pigmentation). In terms of heterologous protein production, duckweeds, being plants, are capable of expressing proteins with complex structures and post-translational modifications. Research efforts have focused on the development of duckweed-based edible vaccines, including those against avian influenza, tuberculosis, Newcastle disease, and mastitis, among others. As with any emerging technology, the development of duckweeds as a platform for edible vaccines is still in its early stages compared to well-established injectable vaccines. It is evident that more proof-of-concept studies are required to bring edible vaccines closer to the current standards of conventional vaccines. Specifically, the duckweed expression system needs further development in areas such as yield and growth rate, especially when compared to bacterial and mammalian expression systems. Continued efforts in this field could lead to breakthroughs that significantly improve the resilience of the animal farming industry against disease threats.

动物疾病是动物饲养业中最令人头疼的问题之一,导致全球生产率和产品质量下降。可食用疫苗是传统注射疫苗的新兴替代品,它有望在保持疫苗有效性的同时提高给药效率。浮萍是最有前景的可食用疫苗平台之一,因为浮萍生长速度快,易于转化,营养成分优良。本综述探讨了利用浮萍作为可食用疫苗平台的潜力、可行性和优势。事实证明,鸭茅是极好的饲料来源,其在数量(如增重)和质量(如卵黄色素)方面的众多改进都证明了这一点。在异源蛋白质生产方面,浮萍作为植物,能够表达具有复杂结构和翻译后修饰的蛋白质。研究工作的重点是开发基于浮萍的可食用疫苗,包括预防禽流感、结核病、新城疫和乳腺炎等的疫苗。与任何新兴技术一样,与成熟的注射疫苗相比,将浮萍作为可食用疫苗平台的开发仍处于早期阶段。显然,要使可食用疫苗更接近目前传统疫苗的标准,还需要进行更多的概念验证研究。具体来说,浮萍表达系统需要在产量和生长速度等方面进一步发展,特别是与细菌和哺乳动物表达系统相比。在这一领域的持续努力可能会带来突破,从而大大提高动物养殖业抵御疾病威胁的能力。
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引用次数: 0
Biodegradation of sugarcane bagasse biomass using recombinant alpha-galactosidase overexpressing whole-cell E.coli: a sustainable method of agricultural waste utilization. 利用重组α-半乳糖苷酶过表达全细胞大肠杆菌对甘蔗渣生物质进行生物降解:一种可持续的农业废物利用方法。
IF 2.6 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-25 DOI: 10.1007/s13205-024-04092-6
P M Vetriselvi, Manoj Kumar Narasimhan, Marcus Samuel, Rex Arunraj

Whole-cell bacteria overexpressing a combo of enzymes capable of breaking down complex lignocellulosic components of cell wall is a path-breaking innovation that is eco-friendly for agricultural waste processing and sustainable environment. In this study, a whole-cell E. coli overexpressing the enzyme alpha-galactosidase is used to biodegrade sugarcane bagasse, presenting a sustainable approach for agricultural waste utilization. Alpha-galactosidase is an enzyme that breaks down alpha-D-galactose residues at the non-reducing ends of oligosaccharides (such as raffinose, stachyose, and verbascose), complex galactomannans, and galactolipids. Submerged and solid-state fermentation-mediated hydrolysis of bagasse waste using recombinant E. coli overexpressing α-galactosidase shows a decrease in the level of α-galactosides releasing sucrose and reducing sugars, indicating a continuous breakdown of the cell wall. Scanning electron microscopy indicates substantial disintegration of cell wall fibers under both submerged (12 h) and solid-state (7 days) fermentation, confirming the disruption of bagasse cell wall structural integrity. The 2XM9 media was found competent for both total protein and enzyme activity; the total protein concentration was 2553 µg/ml after 28 h of induction with an enzyme activity of 0.445 gal units/µg of protein after 16 h of induction at 24 °C. The results show that using whole-cell recombinant systems that express different cell wall-degrading enzymes could be a sustainable way to use agricultural waste, which would help with both waste management and protecting the environment.

过量表达能分解细胞壁中复杂木质纤维素成分的组合酶的全细胞细菌是一种突破性创新,对农业废物处理和可持续环境具有生态友好性。本研究利用过量表达α-半乳糖苷酶的全细胞大肠杆菌对甘蔗渣进行生物降解,为农业废物利用提供了一种可持续的方法。α-半乳糖苷酶是一种能分解低聚糖(如棉子糖、水苏糖和马来糖)非还原末端的α-D-半乳糖残基、复合半乳甘露聚糖和半乳脂的酶。利用过量表达 α-半乳糖苷酶的重组大肠杆菌对甘蔗渣废料进行浸没式和固态发酵介导的水解显示,释放出蔗糖和还原糖的α-半乳糖苷水平下降,表明细胞壁在不断分解。扫描电子显微镜显示,在浸没发酵(12 小时)和固态发酵(7 天)过程中,细胞壁纤维都发生了大量分解,证实蔗渣细胞壁结构的完整性受到破坏。在 2XM9 培养基中,总蛋白和酶活性均合格;在 24 °C 下诱导 28 小时后,总蛋白浓度为 2553 微克/毫升,诱导 16 小时后,酶活性为 0.445 gal 单位/微克蛋白。研究结果表明,使用表达不同细胞壁降解酶的全细胞重组系统是一种可持续利用农业废弃物的方法,有助于废弃物管理和环境保护。
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引用次数: 0
Colorimetric screening model for identification of menaquinone-7 (MK-7) producing strains. 用于鉴定脑啡肽-7(MK-7)生产菌株的比色筛选模型。
IF 2.6 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-25 DOI: 10.1007/s13205-024-04097-1
Qiu-Hua Zhang, Zheng Wang, Yao-Qiang Wang, Yi-Lin Zhao, Hai-Jia Su

In this study, a novel colorimetric screening method for identifying menaquinone-7 (MK-7) producing strains was established using potassium permanganate. To our knowledge, this method represents the first direct screening methodology for the identification of MK-7 producing strains. Utilizing this screening method, a new MK-7 producing strain, Bacillus subtilis GSA-184, was identified from the soil of the Tibetan Plateau. Under the optimized fermentation medium (50 g/L glycerol, 30 g/L yeast extract powder, 100 g/L soybean peptone, 1 g/L KH2PO4, and 1 g/L MnSO4), the production of MK-7 was increased to 25.7 mg/L. Additionally, the maximum production of MK-7 reached 36.46 mg/L after 48 h in a 5-L fermenter.

Supplementary information: The online version contains supplementary material available at 10.1007/s13205-024-04097-1.

本研究利用高锰酸钾建立了一种新的比色筛选方法,用于鉴定产生 menaquinone-7 (MK-7)的菌株。据我们所知,这种方法是第一种直接筛选鉴定 MK-7 生产菌株的方法。利用这种筛选方法,我们从青藏高原的土壤中鉴定出了一种新的 MK-7 产菌株--枯草芽孢杆菌 GSA-184。在优化的发酵培养基(50 g/L甘油、30 g/L酵母提取物粉末、100 g/L大豆蛋白胨、1 g/L KH2PO4和1 g/L MnSO4)下,MK-7的产量提高到25.7 mg/L。此外,在 5 升发酵罐中发酵 48 小时后,MK-7 的最大产量达到 36.46 mg/L:在线版本包含补充材料,可查阅 10.1007/s13205-024-04097-1。
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引用次数: 0
Fungal endophytes and leaf litter fungi as sources of novel inhibitor-resistant cellulase for biofuel production: a basic study. 真菌内生菌和叶丛真菌作为生物燃料生产中新型抗抑制剂纤维素酶的来源:一项基础研究。
IF 2.6 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-23 DOI: 10.1007/s13205-024-04087-3
Trichur Subramanian Suryanarayanan, Thavamani Rajamani, Nina Aro, Anna Borisova, Kaisa Marjamaa, Meenavalli Babu Govindarajulu

Hydrothermal pretreatments are commonly employed prior to the biotechnological conversion of lignocellulosic biomass (LCB) into value-added products, such as fuels and chemicals. However, the by-products of this pretreatment, including furaldehydes, lignin-derived phenolics, and carboxylic acids, can inhibit the enzymes and microbes used in the biotechnological process. In this study, LCB degrading enzymes of endophytic and litter fungi were screened for their tolerance to potential pretreatment-derived inhibitors. Several fungi produced endo- and exoglucanases that remained functional in the presence of lignocellulose-derived phenolics. Some were also active in the presence of tannic acid. Additionally, thermostable endoglucanase activity was observed in some fungi. The ability of some of these fungi to utilize furaldehyde inhibitors as a sole carbon source was also noted. The culture supernatants of the fungal strains were tested in hydrolysis experiments using microcrystalline cellulose as a substrate, in the presence of lignocellulose phenolics and tannic acid. With some strains, higher sugar yields were obtained in the hydrolysis of cellulose when phenolics were added. Our results highlight the need for more intensive exploration of endophytic and plant litter fungi for novel inhibitor-resistant cellulases for biofuel production.

Supplementary information: The online version contains supplementary material available at 10.1007/s13205-024-04087-3.

在通过生物技术将木质纤维素生物质(LCB)转化为燃料和化学品等增值产品之前,通常会采用水热预处理。然而,这种预处理的副产品(包括糠醛、木质素衍生酚类和羧酸)会抑制生物技术过程中使用的酶和微生物。本研究筛选了内生真菌和枯落物真菌的低氯苯降解酶,以了解它们对潜在预处理衍生抑制剂的耐受性。几种真菌产生的内生和外生葡聚糖酶在木质纤维素衍生的酚类物质存在时仍能发挥作用。有些真菌在单宁酸存在时也具有活性。此外,在一些真菌中还观察到了恒温内切葡聚糖酶活性。还注意到其中一些真菌能够利用呋喃甲醛抑制剂作为唯一的碳源。在木质纤维素酚类物质和单宁酸存在的情况下,以微晶纤维素为底物对真菌菌株的培养上清液进行了水解实验。在某些菌株中,添加酚类物质后,纤维素的水解产糖量会更高。我们的研究结果突出表明,有必要对内生真菌和植物废弃物真菌进行更深入的研究,以寻找用于生物燃料生产的新型抗抑制剂纤维素酶:在线版本包含补充材料,可查阅 10.1007/s13205-024-04087-3。
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引用次数: 0
Paclitaxel production from endophytic Mucor circinelloides isolated from Taxus sp. of the Northern Himalayan region. 从喜马拉雅山北部地区的紫杉属植物中分离出的内生菌 Mucor circinelloides 产生紫杉醇。
IF 2.6 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-26 DOI: 10.1007/s13205-024-04091-7
Aparajita Sharma, Pryanka Thakur, Vikram Thakur, Duni Chand, Ravi Kant Bhatia, Sourabh Kulshrestha, Pradeep Kumar

The current investigation involved the isolation of 13 endophytic fungi from Taxus sp. collected in Himachal Pradesh, India. Among these, isolate PAT-3 produced 195.13 mg/L of Taxol in reformative medium broth using microbial fermentation as an alternative source. The PAT-3 isolate was characterized as Mucor circinelloides through morphologic and molecular techniques. The PAT-3 isolate was the only one to exhibit positive results for the Taxol biosynthesis-related genes 10-deacetylbaccatin-III-10-O-acetyltransferase (dbat), Baccatin-III, 3: amino, 3 phenylpropanol transferase (bapt), and taxadienol-acetyltransferase (tat). Furthermore, human breast cancer (MCF-7) and human melanoma cancer (SKMEL-28) cell lines demonstrated the cytotoxicity of Taxol extracted from isolate PAT-3, with IC50 values of 80.32 µg/mL and 77.21 µg/mL, respectively. To our knowledge, this is the first study that demonstrates the ability of the endophytic fungus M. circinelloides from Taxus sp. in the northern Himalayan region to produce paclitaxel. The study's findings show that Mucor circinelloides is an excellent alternative source of Taxol, and they may pave the way for the production of Taxol at the industrial level in future.

Supplementary information: The online version contains supplementary material available at 10.1007/s13205-024-04091-7.

目前的调查涉及从印度喜马偕尔邦采集的 Taxus sp.中分离出 13 种内生真菌。其中,分离菌 PAT-3 以微生物发酵为替代源,在重整培养基肉汤中产生了 195.13 毫克/升的紫杉醇。通过形态学和分子技术,PAT-3 分离物被鉴定为 Mucor circinelloides。该 PAT-3 分离物是唯一一种 Taxol 生物合成相关基因 10-脱乙酰基巴卡丁-III-10-O-乙酰转移酶(dbat)、巴卡丁-III、3:氨基、3 苯丙醇转移酶(bapt)和 taxadienol-乙酰转移酶(tat)呈阳性结果的分离物。此外,人乳腺癌(MCF-7)和人黑色素瘤(SKMEL-28)细胞系也显示了从分离物 PAT-3 中提取的紫杉醇的细胞毒性,IC50 值分别为 80.32 µg/mL 和 77.21 µg/mL。据我们所知,这是第一项证明喜马拉雅山北部地区紫杉属内生真菌 M. circinelloides 能够产生紫杉醇的研究。研究结果表明,Mucor circinelloides是一种很好的紫杉醇替代来源,它们可能为未来工业化生产紫杉醇铺平道路:在线版本包含补充材料,可查阅 10.1007/s13205-024-04091-7。
{"title":"Paclitaxel production from endophytic <i>Mucor circinelloides</i> isolated from <i>Taxus</i> sp. of the Northern Himalayan region.","authors":"Aparajita Sharma, Pryanka Thakur, Vikram Thakur, Duni Chand, Ravi Kant Bhatia, Sourabh Kulshrestha, Pradeep Kumar","doi":"10.1007/s13205-024-04091-7","DOIUrl":"10.1007/s13205-024-04091-7","url":null,"abstract":"<p><p>The current investigation involved the isolation of 13 endophytic fungi from <i>Taxus</i> sp. collected in Himachal Pradesh, India. Among these, isolate PAT-3 produced 195.13 mg/L of Taxol in reformative medium broth using microbial fermentation as an alternative source. The PAT-3 isolate was characterized as <i>Mucor circinelloides</i> through morphologic and molecular techniques. The PAT-3 isolate was the only one to exhibit positive results for the Taxol biosynthesis-related genes 10-deacetylbaccatin-III-10-O-acetyltransferase (<i>dbat</i>), Baccatin-III, 3: amino, 3 phenylpropanol transferase (<i>bapt</i>), and taxadienol-acetyltransferase (<i>tat</i>). Furthermore, human breast cancer (MCF-7) and human melanoma cancer (SKMEL-28) cell lines demonstrated the cytotoxicity of Taxol extracted from isolate PAT-3, with IC<sub>50</sub> values of 80.32 µg/mL and 77.21 µg/mL, respectively. To our knowledge, this is the first study that demonstrates the ability of the endophytic fungus <i>M. circinelloides</i> from <i>Taxus</i> sp. in the northern Himalayan region to produce paclitaxel. The study's findings show that <i>Mucor circinelloides</i> is an excellent alternative source of Taxol, and they may pave the way for the production of Taxol at the industrial level in future.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s13205-024-04091-7.</p>","PeriodicalId":7067,"journal":{"name":"3 Biotech","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11427637/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unveiling the anticancer potential of Anamirta cocculus (L.) Wight& Arn.: Evidences from cytotoxicity studies, apoptosis analysis, and molecular docking. 揭示 Anamirta cocculus (L.) Wight& Arn.:细胞毒性研究、细胞凋亡分析和分子对接的证据。
IF 2.6 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-25 DOI: 10.1007/s13205-024-04096-2
Shiji Thozhukkad Moosaripparambil, Kannan Vadakkadath Meethal

Anamirta cocculus, a woody climber, is extensively utilised in traditional Asian medicine. This study investigates the cytotoxic effects of A. cocculus leaf extracts on various cancer cell lines as well as on a normal cell line. The ethyl acetate extract exhibited potent anticancer activity, with the highest cytotoxicity observed against ovarian cancer cell line (PA1) (IC50 = 8.30 ± 0.38 µg/mL) and colorectal adenocarcinoma cell line (HT29) (IC50 = 17.97 ± 0.63 µg/mL). Notably, the extract displayed low toxicity (18.72 ± 0.73%) on the normal human keratinocyte cell line (HaCaT) at a concentration of 100 µg/mL, indicating selective cytotoxicity towards cancer cells. The acetone extract also demonstrated significant cytotoxicity against various cancer cell lines, including A498, MG63, PA1, and UM-SCC-83B. The ethyl acetate extract of A. cocculus demonstrated potent inhibition of colony formation in HT29 and PA1 cancer cell lines while inducing apoptosis, as evidenced by membrane blebbing, chromatin condensation, and DNA fragmentation. The number of late apoptotic cells increased with an increase in concentrations of ACLE. Molecular docking studies of compounds identified through GC-MS analysis revealed strong interactions with key apoptotic proteins, including caspase-8, p53, caspase-3, and caspase-9. Compounds such as vitamin E, epoxylathyrol, squalene, and phytol showed high binding affinity to these proteins, suggesting their role in apoptosis induction. The possibility of induction of apoptotic proteins through indirect interaction by binding to other proteins or receptors cannot be ruled out. The cytotoxic effects may result from individual, combined, or synergistic actions of these compounds. Among these, epoxylathyrol emerged as a particularly promising anticancer drug candidate based on ADME analysis and binding affinity assessments, warranting further investigation.

Supplementary information: The online version contains supplementary material available at 10.1007/s13205-024-04096-2.

Anamirta cocculus 是一种木本攀缘植物,在亚洲传统医学中被广泛使用。本研究调查了鹅掌楸叶提取物对各种癌细胞系和正常细胞系的细胞毒性作用。乙酸乙酯萃取物显示出强大的抗癌活性,对卵巢癌细胞株(PA1)(IC50 = 8.30 ± 0.38 µg/mL)和结直肠腺癌细胞株(HT29)(IC50 = 17.97 ± 0.63 µg/mL)的细胞毒性最高。值得注意的是,在浓度为 100 µg/mL 时,该提取物对正常人角质细胞系(HaCaT)的毒性较低(18.72 ± 0.73%),表明其对癌细胞具有选择性细胞毒性。丙酮提取物对各种癌细胞系也有明显的细胞毒性,包括 A498、MG63、PA1 和 UM-SCC-83B。茯苓的乙酸乙酯提取物能有效抑制 HT29 和 PA1 癌细胞株的集落形成,同时诱导细胞凋亡,表现为细胞膜脱落、染色质凝结和 DNA 断裂。晚期凋亡细胞的数量随着 ACLE 浓度的增加而增加。通过 GC-MS 分析确定的化合物的分子对接研究显示,这些化合物与关键的凋亡蛋白(包括 caspase-8、p53、caspase-3 和 caspase-9)有很强的相互作用。维生素 E、环氧黄腐醇、角鲨烯和植醇等化合物与这些蛋白的结合亲和力很高,表明它们在诱导细胞凋亡方面发挥了作用。不排除通过与其他蛋白质或受体的间接相互作用诱导凋亡蛋白的可能性。细胞毒性作用可能是这些化合物单独、联合或协同作用的结果。其中,根据 ADME 分析和结合亲和力评估,环氧黄腐醇是一种特别有前途的抗癌候选药物,值得进一步研究:在线版本包含补充材料,可查阅 10.1007/s13205-024-04096-2。
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引用次数: 0
Phage therapy: A novel approach against multidrug-resistant pathogens. 噬菌体疗法:对抗耐多药病原体的新方法。
IF 2.6 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-30 DOI: 10.1007/s13205-024-04101-8
Arushi Kapoor, Samriti Balaji Mudaliar, Vyasraj G Bhat, Ishita Chakraborty, Alevoor Srinivas Bharath Prasad, Nirmal Mazumder

The rapid rise of multidrug-resistant (MDR) organisms has created a critical need for alternative treatment options. Phage therapy is gaining attention as an effective way to fight bacterial infections by using lytic bacteriophages to specifically target and kill harmful bacteria. This review discusses several phage therapeutic options and emphasizes new developments in phage biology. Phage treatment has proven to be successful against MDR bacteria, as evidenced by multiple human clinical trials that indicate favorable results in treating a range of diseases caused by these pathogens. Despite these promising results, challenges such as phage resistance, regulatory hurdles, and the need for standardized treatment protocols remain. To effectively combat MDR bacterial infections, future research must focus on enhancing phage effectiveness, guaranteeing safety for human usage and incorporating phage therapy into clinical practice.

耐多药(MDR)生物的迅速增加迫切需要替代治疗方案。噬菌体疗法通过使用溶解性噬菌体来特异性地靶向杀死有害细菌,作为抗击细菌感染的一种有效方法正日益受到关注。本综述讨论了几种噬菌体治疗方案,并强调了噬菌体生物学的新发展。多项人体临床试验表明,噬菌体疗法在治疗由这些病原体引起的一系列疾病方面取得了良好的效果,这也证明了噬菌体疗法能成功对付 MDR 细菌。尽管取得了这些令人鼓舞的成果,但噬菌体抗药性、监管障碍和标准化治疗方案需求等挑战依然存在。为了有效对抗 MDR 细菌感染,未来的研究必须侧重于提高噬菌体的有效性、保证人体使用的安全性以及将噬菌体疗法纳入临床实践。
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引用次数: 0
Insights into the biodegradation of polyhydroxyalkanoates by the tropical marine isolate, Nocardiopsis dassonvillei NCIM 5124. 热带海洋分离菌 Nocardiopsis dassonvillei NCIM 5124 对多羟基烷酸酯生物降解的见解。
IF 2.6 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-21 DOI: 10.1007/s13205-024-04079-3
H Anjulal, Mamata Singhvi, Smita Zinjarde

In the current study, the ability of an indigenous marine Actinomycete Nocardiopsis dassonvillei (NCIM 5124) to degrade poly(3-hydroxybutyrate)-PHB was examined. From the whole genome sequencing data of the organism, information regarding the PHB depolymerase gene and amino acid sequence (Accession number: MCK9871921.1) was retrieved. In silico studies indicated the presence of a signal peptide characteristic of extracellular enzymes. ProtParam tool predicted that the protein had a molecular mass of 42.46 kDa with an isoelectric point of 4.51. Aliphatic and instability index values suggested that the protein was stable and the observed GARVY value indicated its hydrophilic nature. 3D structure prediction and multiple sequence alignments revealed the presence of Type I catalytic domain [including the oxyanion histidine towards the N terminal, the catalytic triad with serine (as a part of GLSAG pentapeptide), aspartate and histidine], substrate binding and linker domain. The organism was able to grow on PHB in solid and liquid media and effectively degrade it. Maximum enzyme activity (1.8 U/mL/min) was observed after 5 d of incubation in Bushnell Hass Medium containing 0.1% PHB, 1.5% sodium chloride, at 30 °C, pH 7.5 with agitation at 130 rpm. Application of the organism in disintegrating films of PHB and its copolymers was successfully demonstrated on the basis of weight loss and scanning electron microscope analysis. To the best of our knowledge, this is the first report on production of PHB depolymerase with high efficiency by N. dassonvillei, an organism that holds promise in degrading PHB-derived waste material.

Supplementary information: The online version contains supplementary material available at 10.1007/s13205-024-04079-3.

本研究考察了一种本土海洋放线菌 Nocardiopsis dassonvillei(NCIM 5124)降解聚(3-羟基丁酸)-PHB 的能力。从该生物的全基因组测序数据中,检索到了有关 PHB 解聚酶基因和氨基酸序列(登录号:MCK9871921.1)的信息。硅学研究表明,该蛋白含有细胞外酶特有的信号肽。ProtParam 工具预测该蛋白质的分子质量为 42.46 kDa,等电点为 4.51。脂肪指数和不稳定指数值表明该蛋白质是稳定的,观察到的 GARVY 值表明其具有亲水性。三维结构预测和多序列比对显示了 I 型催化结构域(包括 N 端组氨酸氧阴离子,以及由丝氨酸(作为 GLSAG 五肽的一部分)、天冬氨酸和组氨酸组成的催化三元组)、底物结合结构域和连接结构域。该生物能够在固体和液体培养基中的 PHB 上生长并有效降解 PHB。在含 0.1% PHB、1.5%氯化钠的布什内尔-哈斯培养基(Bushnell Hass Medium)中,于 30 °C、pH 7.5、130 rpm 条件下培养 5 d 后,观察到最大酶活性(1.8 U/mL/min)。根据重量损失和扫描电子显微镜分析,成功证明了该生物在分解 PHB 及其共聚物薄膜中的应用。据我们所知,这是第一份关于达松维尔菌(N. dassonvillei)高效生产 PHB 解聚酶的报告:在线版本包含补充材料,可查阅 10.1007/s13205-024-04079-3。
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引用次数: 0
Physio-morphological and molecular characterization of ethyl methanesulfonate-derived mutant population of Gossypium herbaceum L. cv. (Wagad) for drought tolerance. Gossypium herbaceum L. cv. (Wagad)耐旱性甲磺酸乙酯衍生突变体群体的生理形态和分子特征。
IF 2.6 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-20 DOI: 10.1007/s13205-024-04089-1
Sushma, Umesh Kumar, Vipin Kumar Tiwari, Priyamvada Mishra, Vaishali, Hemant Kumar Yadav, Samir V Sawant, Pramod Arvind Shirke

This study investigates the response of ethyl methanesulfonate-derived twenty mutant lines of Gossypium herbaceum, along with the parent type Wagad cultivar, to drought stress. Physiological parameters, such as relative water content (RWC), net photosynthesis (A), stomatal conductance (g s), transpiration rate (E), and water use efficiency (WUE), were examined. The mutant line mut_3219 exhibited superior drought tolerance, maintaining high RWC and water retention capacity, with minimal reductions in A, g s, and E, leading to higher WUE than parent type and other mutant lines. Chlorophyll pigments declined in all the mutants under drought. However, mut_3219 retained higher levels than mut_4785. Anthocyanin accumulation indicated a protective response. Chlorophyll fluorescence showed mut_3219 is less sensitive to drought-induced PSII damage than mut_4785, with better membrane stability and higher proline accumulation, among all other mutant lines and parent type. The morphological parameters were less affected in mut_3219 compared to mut_4785 and parent type. Molecular analyses under control and drought conditions revealed significant variations in the expression of seven drought-related genes (GhbHLH, GhMYB5, GhWRKY33, GhRAF4, GhRAF19, GhNAC2, and GhCAMTA). The relative expression of GhbHLH, GhNAC2, GhRAF4, GhRAF19, and GhCAMTA increased under drought conditions, with notable changes in mut_3219 compared to parent type and all other mutant lines, indicating its enhanced drought tolerance. These findings provide valuable insights into the molecular and physiological mechanisms underlying drought tolerance in cotton.

Supplementary information: The online version contains supplementary material available at 10.1007/s13205-024-04089-1.

本研究调查了甲磺酸乙酯衍生的 20 个草本格桑花突变品系以及母本 Wagad 栽培品种对干旱胁迫的响应。研究考察了相对含水量(RWC)、净光合作用(A)、气孔导度(g s)、蒸腾速率(E)和水分利用效率(WUE)等生理参数。突变品系mut_3219表现出卓越的耐旱性,保持了较高的RWC和保水能力,A、g s和E的降低幅度极小,导致其水分利用效率高于亲本类型和其他突变品系。在干旱条件下,所有突变体的叶绿素色素都有所下降。然而,mut_3219 比 mut_4785 保持了更高的水平。花青素积累表明了一种保护性反应。叶绿素荧光显示,在所有其他突变株系和母本型中,mut_3219 对干旱诱导的 PSII 损伤的敏感性低于 mut_4785,膜稳定性更好,脯氨酸积累更高。与 mut_4785 和母本相比,mut_3219 的形态参数受影响较小。对照和干旱条件下的分子分析表明,7个干旱相关基因(GhbHLH、GhMYB5、GhWRKY33、GhRAF4、GhRAF19、GhNAC2和GhCAMTA)的表达存在显著差异。在干旱条件下,GhbHLH、GhNAC2、GhRAF4、GhRAF19 和 GhCAMTA 的相对表达量增加,与亲本型和所有其他突变株相比,mut_3219 的表达量变化明显,表明其耐旱性增强。这些发现为研究棉花耐旱性的分子和生理机制提供了有价值的见解:在线版本包含补充材料,见 10.1007/s13205-024-04089-1。
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引用次数: 0
Silver nanoparticles mediated apoptosis and cell cycle arrest in lung cancer A549. 银纳米粒子介导的肺癌 A549 细胞凋亡和细胞周期停滞。
IF 2.6 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-10-01 Epub Date: 2024-09-20 DOI: 10.1007/s13205-024-04064-w
Annapurneshwari M Hongal, Arun K Shettar, Joy H Hoskeri, A B Vedamurthy

The present study was aimed to synthesize the silver nanoparticles from Alangium salvifolium Wang. and evaluating its biomedical applications. The leaves of A. salvifolium collected and subjected for the standard procedure of Soxhlet extraction using distilled water as a solvent. With the help of an aqueous extract AgNPs were synthesized from silver nitrate using phyto-reduction method. Further, synthesized AgNPs were characterized using several analytical techniques such as UV, FTIR, SEM-EDX, XRD, particles size and zeta potential. Synthesized AgNPs were tested for antibacterial, antioxidant, anticancer for lung cancer cell line and flowcytometry-based pathway studies. The visual observation confirmed the formation of AgNPs from the aqueous extract by changing yellow to brown colour formation. Further, characterization techniques also confirmed the formation of AgNPs. Antibacterial activity results showed that the tested AgNPs were potent against bacterial pathogens with a higher zone of inhibition. Further, the antioxidant and anticancer activity of AgNPs revealed that the AgNPs have exhibited significant results with a good percentage of inhibition. Further, the flow cytometry studies confirmed that the AgNPs inducing apoptosis and cell cycle arrest in lung cancer. The phytochemicals of A. salvifolium plant have successfully synthesized AgNPs. In the case of performed biological activity, the synthesized silver nanoparticles exhibited potent activity. In future these AgNPs can be taken for molecular and in vivo studies to identify their efficacy using in vivo and molecular models.

本研究旨在从Alangium salvifolium Wang.中合成银纳米粒子,并评估其生物医学应用。研究人员采集了银莲花的叶片,并以蒸馏水为溶剂,采用索氏提取的标准程序进行提取。在水提取物的帮助下,利用植物还原法从硝酸银中合成了 AgNPs。此外,合成的 AgNPs 还通过多种分析技术进行了表征,如紫外光谱、傅立叶变换红外光谱、扫描电镜-EDX、XRD、粒度和 zeta 电位。对合成的 AgNPs 进行了抗菌、抗氧化、肺癌细胞系抗癌和基于流式细胞仪的路径研究测试。肉眼观察证实,从水提取物中形成的 AgNPs 呈黄色至棕色。此外,表征技术也证实了 AgNPs 的形成。抗菌活性结果表明,测试的 AgNPs 对细菌病原体有较强的抑制作用,抑制区较大。此外,AgNPs 的抗氧化和抗癌活性表明,AgNPs 的效果显著,抑制率高。此外,流式细胞术研究证实,AgNPs 能诱导肺癌细胞凋亡和细胞周期停滞。A. salvifolium 植物的植物化学物质成功合成了 AgNPs。在生物活性方面,合成的银纳米粒子表现出了强大的活性。今后,这些银纳米粒子可用于分子和体内研究,利用体内和分子模型确定其功效。
{"title":"Silver nanoparticles mediated apoptosis and cell cycle arrest in lung cancer A549.","authors":"Annapurneshwari M Hongal, Arun K Shettar, Joy H Hoskeri, A B Vedamurthy","doi":"10.1007/s13205-024-04064-w","DOIUrl":"10.1007/s13205-024-04064-w","url":null,"abstract":"<p><p>The present study was aimed to synthesize the silver nanoparticles from <i>Alangium salvifolium</i> Wang. and evaluating its biomedical applications. The leaves of <i>A. salvifolium</i> collected and subjected for the standard procedure of Soxhlet extraction using distilled water as a solvent. With the help of an aqueous extract AgNPs were synthesized from silver nitrate using phyto-reduction method. Further, synthesized AgNPs were characterized using several analytical techniques such as UV, FTIR, SEM-EDX, XRD, particles size and zeta potential. Synthesized AgNPs were tested for antibacterial, antioxidant, anticancer for lung cancer cell line and flowcytometry-based pathway studies. The visual observation confirmed the formation of AgNPs from the aqueous extract by changing yellow to brown colour formation. Further, characterization techniques also confirmed the formation of AgNPs. Antibacterial activity results showed that the tested AgNPs were potent against bacterial pathogens with a higher zone of inhibition. Further, the antioxidant and anticancer activity of AgNPs revealed that the AgNPs have exhibited significant results with a good percentage of inhibition. Further, the flow cytometry studies confirmed that the AgNPs inducing apoptosis and cell cycle arrest in lung cancer. The phytochemicals of <i>A. salvifolium</i> plant have successfully synthesized AgNPs. In the case of performed biological activity, the synthesized silver nanoparticles exhibited potent activity. In future these AgNPs can be taken for molecular and in vivo studies to identify their efficacy using in vivo and molecular models.</p>","PeriodicalId":7067,"journal":{"name":"3 Biotech","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11415561/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142278669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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3 Biotech
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