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Importance of substrate type and its constituents on overall performance of microbial fuel cells 基质类型及其成分对微生物燃料电池整体性能的重要性
IF 3.6 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.crbiot.2025.100272
Somil Thakur, Rajnish Kaur Calay, Mohamad Y. Mustafa, Fasil E. Eregno, Ravindra R. Patil
Microbial Fuel Cells (MFC) have emerged as a potential wastewater treatment technology that utilizes metabolic processes of microorganisms present in the wastewater to disintegrate organic substrates and harness direct electricity. This paper reviews the potential of different wastewater types as a suitable substrate for microbial activities in MFCs. Substrate composition (carbon source, nutrient content and inhibitory compounds) directly affects the microbial growth, wastewater treatment potential, electron transfer rate and power harvested. Readily biodegradable substrates such as acetate and glucose promote microbial metabolism and electron transport, thus resulting in enhanced power generation. Substrates such as municipal or agricultural wastewater that constitute both simple and complex organic matter require longer breakdown durations but can provide MFCs with long term operational stability. On the other hand, substrates such as leachate from landfills, mining wastewater etc. are generally unsuitable for regular operations. The paper discusses the challenges such as suitability of various wastewaters, unpredictability of composition, presence of inhibitory chemicals like heavy metals or toxic organics that can subdue the microbial activity and reduce efficiency of a MFC reactor. It aims to identify the relationship between the substrate characteristics and MFC performance in order to select the substrate for achieving optimal output from MFC technology. The suitable substrates that exhibit optimal performance in terms of current and power output, coulombic efficiency, and reduction in chemical oxygen demand are identified.
微生物燃料电池(MFC)是一种潜在的污水处理技术,它利用废水中存在的微生物的代谢过程来分解有机基质并利用直接电力。本文综述了不同类型的废水作为mfc中微生物活动的合适底物的潜力。底物组成(碳源、营养成分和抑制化合物)直接影响微生物生长、废水处理潜力、电子传递率和收获功率。易于生物降解的底物,如乙酸和葡萄糖,促进微生物代谢和电子传递,从而增强发电能力。构成简单和复杂有机物质的市政或农业废水等基质需要更长的分解时间,但可以为mfc提供长期的运行稳定性。另一方面,垃圾填埋场的渗滤液、采矿废水等基质通常不适合常规操作。本文讨论了各种废水的适用性、组成的不可预测性、重金属或有毒有机物等抑制性化学物质的存在等挑战,这些化学物质会抑制微生物的活性并降低MFC反应器的效率。旨在确定衬底特性与MFC性能之间的关系,以便选择衬底以实现MFC技术的最佳输出。确定了在电流和功率输出、库仑效率和化学需氧量减少方面表现出最佳性能的合适衬底。
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引用次数: 0
Aptamer-based diagnostics and therapeutics in viral sepsis: current progress, application and future prospects 基于适体体的病毒性败血症诊断和治疗:目前进展、应用和未来展望
IF 4 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.crbiot.2025.100318
Noraini Abd-Aziz , Fatimah Ibrahim , Sun Tee Tay
Sepsis is a systemic inflammatory response to microbial infection that is characterized by a spectrum of physiological and pathological disorders. Viruses have been identified with varying roles in the context of sepsis. Diagnosing viral sepsis poses a great challenge due to a lack of viral detection reagents and assays, contributing to the underreporting of prevalence. Aptamers are single-stranded nucleic acids (either DNA or RNA) that can fold into specific structures, enabling their binding with a wide array of target molecules with high affinity and selectivity. This review provides updates on advances in aptamer development for viruses implicated in sepsis, aptamer selection methodologies through Systematic Evolution of Ligands by Exponential Enrichment (SELEX), and application of aptamer-based diagnostics and therapeutics. Additionally, several critical challenges in aptamer technology are addressed, with special emphasis on its analytical sensitivity, functional complexity, and translation to clinical practice.
脓毒症是一种对微生物感染的全身性炎症反应,其特征是一系列生理和病理紊乱。病毒已被确定在脓毒症的背景下具有不同的作用。由于缺乏病毒检测试剂和检测方法,导致患病率低报,因此诊断病毒性败血症面临巨大挑战。适配体是单链核酸(DNA或RNA),可以折叠成特定的结构,使它们能够以高亲和力和选择性与广泛的靶分子结合。本文综述了与败血症相关的病毒适体开发的最新进展,通过指数富集配体的系统进化(SELEX)来选择适体的方法,以及基于适体的诊断和治疗的应用。此外,适体技术的几个关键挑战被解决,特别强调其分析敏感性,功能复杂性,并转化为临床实践。
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引用次数: 0
Spatial profiling technologies for research and clinical application in head and neck squamous cell cancers 头颈部鳞状细胞癌的研究和临床应用空间分析技术
IF 4 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.crbiot.2025.100321
Artur Nieszporek , Małgorzata Wierzbicka , Aadil Khan , Mateusz Jeziorny , Patryk Kraiński , Joanna Cybinska , Patrycja Gazinska
The efficacy of clinical treatment in head and neck squamous cell carcinoma (HNSCC) may be influenced by interactions within the tumor microenvironment (TME), involving non-malignant cells such as tumor-infiltrating lymphocytes (TILs) and cancer-associated fibroblasts (CAFs). These cells are crucial parts of the complex and dynamic TME. High-throughput spatial profiling technologies show remarkable potential in identifying predictive biomarkers in HNSCC’s TME. Despite advancements in molecular characterization, the translation of these insights into clinical practice remains limited.
Understanding these interactions and the TME is pertinent for developing effective therapies and pinpointing biomarkers that predict treatment responses. Spatial profiling also provides comprehensive insights into the cancer multi-omics by characterizing diverse and heterogeneous cell type, cell density, location, and intercellular interactions within the TME. HNSCC continues to be a major global health issue with rising incidence and mortality rates. Although immunotherapies have been effective for some, they benefit only a subset of patients. Spatial profiling helps uncover actionable biomarkers by exposing tumor heterogeneity and immune system interactions, paving the way for more precise medicine in HNSCC. Although the clinical application of multi-omics tumor profiling is still nascent, these technologies hold promise in enhancing our understanding of HNSCC biology and immuno-oncology, guiding future precision-treatment strategies.
This review outlines the applications of high-throughput spatial profiling technologies in both research and clinical settings for HNSCC, highlighting their potential to improve therapeutic strategies through an enhanced understanding of the HNSCC microenvironment. The successful integration of spatial profiling technologies into HNSCC research and clinical practice depends on a standardized, multicenter pipeline that ensures data consistency, seamless integration, and scalability. By combining high-resolution spatial transcriptomics with clinical and genomic insights, this approach has the potential to refine biomarker discovery, enhance patient stratification, and optimize immunotherapy strategies, ultimately paving the way for more precise and effective cancer treatments.
头颈部鳞状细胞癌(HNSCC)的临床治疗效果可能受到肿瘤微环境(TME)内相互作用的影响,包括非恶性细胞,如肿瘤浸润淋巴细胞(til)和癌症相关成纤维细胞(CAFs)。这些细胞是复杂而动态的TME的关键部分。高通量空间分析技术在鉴别HNSCC TME的预测性生物标志物方面显示出巨大的潜力。尽管在分子表征方面取得了进步,但将这些见解转化为临床实践仍然有限。了解这些相互作用和TME对于开发有效的治疗方法和确定预测治疗反应的生物标志物至关重要。空间图谱还通过表征TME内不同和异质细胞类型、细胞密度、位置和细胞间相互作用,为癌症多组学提供了全面的见解。输卵管性结直肠癌仍然是一个主要的全球健康问题,发病率和死亡率不断上升。尽管免疫疗法对一些人有效,但它们只对一小部分患者有效。空间谱分析通过揭示肿瘤异质性和免疫系统相互作用,有助于发现可操作的生物标志物,为更精确的HNSCC药物治疗铺平道路。尽管多组学肿瘤分析的临床应用仍处于起步阶段,但这些技术有望增强我们对HNSCC生物学和免疫肿瘤学的理解,指导未来的精确治疗策略。本文概述了高通量空间分析技术在HNSCC研究和临床中的应用,强调了它们通过加深对HNSCC微环境的理解来改善治疗策略的潜力。将空间分析技术成功整合到HNSCC研究和临床实践中,取决于标准化的多中心管道,以确保数据一致性、无缝集成和可扩展性。通过将高分辨率空间转录组学与临床和基因组学见解相结合,这种方法有可能改进生物标志物的发现,增强患者分层,优化免疫治疗策略,最终为更精确和有效的癌症治疗铺平道路。
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引用次数: 0
Functional characterization of a secreted glucansucrase from Leuconostoc mesenteroides and the potential of its α-glucan product in oxygen stress relief 肠系膜白斑菌分泌的葡聚糖酶的功能特征及其α-葡聚糖产物在氧应激缓解中的潜力
IF 4 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.crbiot.2025.100350
Huafeng Feng , Bing-hua Wang , Chunping You , Jin Han , Kexin Jiang , Yanni Zhou , Hei-tsai Tabγač , Peng Chang , Wei Shen , Minghui Yan
Leuconostoc mesenteroides are characterized by α-glucan production in the presence of sucrose. Although they lack the enzymes to scavenge reactive oxygen species (ROS), strains of L. mesenteroides are generally tolerant to oxygen. Despite the wide applications of L. mesenteroides and α-glucans in food and medical industry, mechanisms underlie α-glucan synthesis, and their roles in oxygen-tolerance remain to be elucidated. This study aimed at functional characterization of the enzyme for α-glucan synthesis in L. mesenteroides CGMCC10064 and addressing its role in oxygen stress. 1323 was identified as a secreted glucansucrase via SDS-PAGE followed by MALDI-TOF MS and Western blot. Its enzyme activity was characterized via in situ polymer synthesis and function blockade by a specific antibody. Finally, 1323-encoding gene was cloned and expressed in E. coli. α-glucan was synthesized in vitro with recombinant 1323 and its potential in oxygen stress relief was investigated. The α-glucan obtained improved the aerobic growth of L. mesenteroides strains via reduction of the oxidation–reduction potential as well as ROS accumulation. Moreover, oxygen stress relief by the α-glucan improved the growth and survival of probiotic Lactobacillus and Bifidobacterium strains under oxygen stress. These results highlighted the potential of a novel secreted glucansucrase and its α-glucan product in oxygen stress relief and cultivation and preservation of oxygen-sensitive bacteria.
肠系膜白色菌的特点是在有蔗糖存在的情况下产生α-葡聚糖。虽然肠系膜乳杆菌缺乏清除活性氧(ROS)的酶,但它们通常对氧具有耐受性。尽管肠系膜乳杆菌和α-葡聚糖在食品和医疗工业中有着广泛的应用,但α-葡聚糖的合成机制及其在耐氧中的作用仍有待阐明。本研究旨在对肠系膜乳酸菌(L. mesenteroides)中α-葡聚糖合成酶CGMCC10064的功能特征及其在氧胁迫中的作用进行研究。通过SDS-PAGE、MALDI-TOF MS和Western blot鉴定1323为分泌型葡聚糖酶。通过原位聚合物合成和特异性抗体的功能阻断来表征其酶活性。最后克隆了1323编码基因并在大肠杆菌中表达。用重组1323体外合成α-葡聚糖,并探讨其在氧应激中的应用潜力。得到的α-葡聚糖通过降低氧化还原电位和ROS积累,促进了肠系膜乳杆菌的好氧生长。α-葡聚糖对氧胁迫下益生菌乳酸菌和双歧杆菌的生长和存活均有促进作用。这些结果突出了一种新的分泌型葡聚糖酶及其α-葡聚糖产物在氧应激缓解和氧敏感细菌的培养和保存方面的潜力。
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引用次数: 0
Mosquitoes bite cancer patients, but never get cancer: what can we learn? digestive enzymes and host-specificity as natural barriers 蚊子叮咬癌症患者,但永远不会得癌症:我们能学到什么?消化酶和宿主特异性作为天然屏障
IF 4 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.crbiot.2025.100353
Riza-Arief Putranto , Fiona Nishani , Erda Qorri , Raymond Rubianto Tjandrawinata , Antonello Santini , Fahrul Nurkolis
Mosquitoes, despite their frequent exposure to various mammalian blood components, including potentially aberrant cells, have never been reported to develop cancer-like conditions. This paper proposes a speculative biological model suggesting that the mosquito’s digestive and immune systems could naturally prevent the survival of malignant cells, offering inspiration for bioinspired cancer-therapeutic design. This perspective explores how the mosquito midgut creates an inhospitable environment through rapid pH shifts, potent digestive enzymes, and oxidative stress, leading to potential degradation of mammalian cancer cells. In parallel, the mosquito’s innate immune system, including antimicrobial peptides (AMPs), hemocyte activity, melanization, and reactive oxygen species (ROS), further neutralizes non-self-cellular threats with speed and precision. Together, these digestive and immune mechanisms offer valuable inspiration for cancer therapy design. This perspective posits that the mosquito’s intrinsic mechanisms for xenobiotic clearance and immune defense against diverse biological threats offer a unique, yet underexplored, biomimetic blueprint for overcoming key challenges in contemporary oncology, particularly drug resistance and the need for precision targeting. Emerging strategies such as ROS-based treatments, protease-mimetic systems, and AMP-engineered platforms reflect the potential of translating mosquito-derived mechanisms and their barriers into biomedical applications and drug delivery systems strategies. This article underscores how the mosquito’s natural defenses may guide the development of novel, bioinspired approaches to improve cancer treatment. Even though this idea remains speculative with limited direct experimental proof, investigating these mechanisms may offer inspiration for the design of bioinspired cancer therapies in the future.
尽管蚊子经常接触各种哺乳动物血液成分,包括潜在的异常细胞,但从未有报道称它们会患上类似癌症的疾病。本文提出了一个推测性的生物学模型,表明蚊子的消化和免疫系统可以自然地阻止恶性细胞的生存,为生物启发的癌症治疗设计提供了灵感。这一观点探讨了蚊子中肠如何通过快速的pH值变化、有效的消化酶和氧化应激创造一个不适宜生存的环境,从而导致哺乳动物癌细胞的潜在降解。与此同时,蚊子的先天免疫系统,包括抗菌肽(AMPs)、血细胞活性、黑色素化和活性氧(ROS),进一步以快速和精确的方式中和非自身细胞的威胁。总之,这些消化和免疫机制为癌症治疗设计提供了宝贵的灵感。这一观点认为,蚊子清除外源和免疫防御各种生物威胁的内在机制为克服当代肿瘤学的关键挑战,特别是耐药性和精确靶向的需要,提供了一个独特的,但尚未得到充分探索的仿生蓝图。诸如基于ros的治疗、蛋白酶模拟系统和amp工程平台等新兴策略反映了将蚊子衍生机制及其障碍转化为生物医学应用和药物输送系统策略的潜力。这篇文章强调了蚊子的自然防御如何指导新的、受生物启发的方法来改善癌症治疗的发展。尽管这种想法仍然是推测性的,直接实验证据有限,但研究这些机制可能会为未来设计生物启发癌症疗法提供灵感。
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引用次数: 0
Eco-engineered remediation: Microbial and rhizosphere-based strategies for heavy metal detoxification 生态工程修复:基于微生物和根际的重金属解毒策略
IF 3.6 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.crbiot.2025.100297
Arun Karnwal , Gaurav Kumar , Alaa El Din Mahmoud , Joydeep Dutta , Rattandeep Singh , Abdel Rahman Mohammad Said Al-Tawaha , Tabarak Malik
Heavy metal (HM) contamination significantly threatens ecosystems and human health. This review explores eco-engineered bioremediation strategies, focusing on the pivotal role of rhizosphere-associated microorganisms in detoxifying heavy metals. Rhizobacteria deploy diverse mechanisms—including biosorption, bioaccumulation, biotransformation, and biomineralization—to immobilize or convert toxic metals, with their efficiency strongly influenced by environmental factors such as pH and metal speciation. Plant Growth-Promoting Rhizobacteria (PGPR) further enhance phytoremediation by mitigating metal-induced phytotoxicity and promoting plant resilience under stress. Various scalable approaches, including in-situ and ex-situ remediation techniques, biosorbents, microbial consortia, and genetically engineered microbes (GEMs), show promising potential but raise essential ecological and regulatory concerns. Key challenges such as scalability, environmental variability, and the possible formation of toxic intermediates must be carefully addressed. Advances in omics technologies and a deeper exploration of native microbial communities offer promising avenues to optimize bioremediation outcomes. Moreover, a detailed understanding of plant–microbe interactions and the role of secondary metabolite signalling in the rhizosphere is essential to improve remediation efficiency. Future strategies should prioritize the application of functional genomics, developing bioinoculants tailored to specific environmental conditions, and implementing robust ecological risk assessments for GEMs. This review underscores the need for a multidisciplinary approach- integrating microbial ecology, plant sciences, and environmental engineering- to drive the development of sustainable, effective HM remediation technologies worldwide.
重金属污染严重威胁着生态系统和人类健康。本文综述了生态工程生物修复策略,重点介绍了根际相关微生物在重金属解毒中的关键作用。根细菌利用多种机制——包括生物吸附、生物积累、生物转化和生物矿化——来固定或转化有毒金属,其效率受到pH和金属形态等环境因素的强烈影响。植物促生长根瘤菌(Plant growth promoting Rhizobacteria, PGPR)通过减轻金属诱导的植物毒性和促进植物在逆境下的恢复能力,进一步增强植物的修复能力。各种可扩展的方法,包括原位和非原位修复技术、生物吸附剂、微生物联合体和基因工程微生物(GEMs),显示出有希望的潜力,但引起了基本的生态和监管问题。关键的挑战,如可扩展性、环境可变性和有毒中间体的可能形成,必须仔细解决。组学技术的进步和对原生微生物群落的深入探索为优化生物修复结果提供了有希望的途径。此外,详细了解植物与微生物的相互作用以及根际次生代谢物信号的作用对于提高修复效率至关重要。未来的战略应优先考虑功能基因组学的应用,开发适合特定环境条件的生物接种剂,并对GEMs实施强有力的生态风险评估。这篇综述强调了需要一个多学科的方法-整合微生物生态学,植物科学和环境工程-推动可持续的,有效的HM修复技术在世界范围内的发展。
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引用次数: 0
Eugenol’s anti-cancer properties, its modulation of signalling pathways, and cascades across various cancers: A review 丁香酚的抗癌特性,其信号通路的调节,和级联在各种癌症:综述
IF 4 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.crbiot.2025.100330
Anirban Debnath , Yi-Hao Lo , Manojit Bhattacharya , Zhi-Hong Wen , Chiranjib Chakraborty , Arpita Das
Several cancer drugs show drug resistance, which is a significant concern for cancer therapy. Therefore, new molecules are required for cancer treatment as anticancer drugs. Recently, several natural bioactive components from medicinal plants have demonstrated anticancer activity and are being marketed as anticancer drugs. Eugenol, a significant bioactive compound, is found in cloves and other traditional Indian medicinal plants, such as cinnamon, tulsi, ginger, turmeric, and Japanese star anise, which have been reported to have significant anticancer properties. The present review highlights the anticancer properties of eugenol. It also exhibits different pharmacological effects (anti-inflammatory, cardio-protection, and neuroprotection). As an anticancer molecule, eugenol exhibits anti-apoptotic, anti-angiogenic, and anti-metastatic properties in cancer cell lines and in vivo animal models, which we discuss in this review. We also discuss eugenol’s effect on different signaling pathways in cancer. Finally, recent diverse anticancer studies of eugenol have been discussing the different cancer types, such as breast cancer, gastric cancer, liver cancer, lung cancer, prostate cancer, ovarian cancer, cervical cancer, gliomas, oral cancers, skin cancer, leukemia, colorectal cancers, osteosarcoma, melanomas, etc. The current review provides an insightful overview of the anticancer properties of eugenol in the treatment and prevention of cancer, ultimately benefiting society.
一些抗癌药物显示出耐药性,这是癌症治疗的一个重要问题。因此,癌症治疗需要新的分子作为抗癌药物。近年来,从药用植物中提取的几种天然生物活性成分已显示出抗癌活性,并作为抗癌药物推向市场。丁香酚是一种重要的生物活性化合物,存在于丁香和其他传统的印度药用植物中,如肉桂、土尔西、生姜、姜黄和日本八角茴香,据报道,这些植物具有显著的抗癌特性。本文综述了丁香酚的抗癌作用。它还表现出不同的药理作用(抗炎、心脏保护和神经保护)。丁香酚作为一种抗癌分子,在癌细胞系和体内动物模型中表现出抗凋亡、抗血管生成和抗转移的特性,本文就其进行综述。我们还讨论了丁香酚对癌症中不同信号通路的影响。最后,近年来丁香酚的各种抗癌研究都在讨论不同的癌症类型,如乳腺癌、胃癌、肝癌、肺癌、前列腺癌、卵巢癌、宫颈癌、胶质瘤、口腔癌、皮肤癌、白血病、结直肠癌、骨肉瘤、黑色素瘤等。本文综述了丁香酚在治疗和预防癌症方面的抗癌特性,最终造福社会。
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引用次数: 0
Exploring the phytochemical composition and the anticancer potential of Haliclona fascigera and Stylissa carteri Red Sea sponges in colon cancer treatment: A promising approach 探讨海苔和海苔海绵在结肠癌治疗中的植物化学成分和抗癌潜力:一条有前景的途径
IF 4 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.crbiot.2025.100331
Samah S. Abuzahrah , Nouf Juaid , Tahani Bakhsh , Serag Eldin I. Elbehairi , Mohammed A. Baghdadi , Reham Hassan Mekky
This study investigates the phytochemical composition and anticancer properties of extracts from the marine sponges Haliclona fascigera (HFE) and Stylissa carteri (SCE), collected from the Red Sea coast of Jeddah, Saudi Arabia, against human colorectal cancer cell lines HCT116 and HT-29 employing SRB assay at varying concentrations (ranging from 0.01 to 1000 µg/mL), compared to the positive control doxorubicin (DOX). The RP-HPLC-QTOF-MS and tandem MS/MS revealed the presence of 59 metabolites belonging to several classes that were described for the first time in HFE and SCE with a predominance of nitrogenous compounds. SCE exhibited a markedly more pronounced cytotoxic effect, with IC50 of 1.9 ± 0.04 µg/mL for the HCT-116 cell line and 7.8 ± 0.6 µg/mL for the HT-29 cell line. In contrast, HFE demonstrated higher IC50 values of 46.5 ± 1.3 µg/mL for HCT-116 and 61.9 ± 2.2 µg/mL for HT-29, indicating that SCE is significantly more potent than HFE, particularly in the HCT-116 cell line. Cell cycle analysis indicated that SCE predominantly induces apoptosis in the S-phase, while HFE significantly affects the G2-phase. Flow cytometric analysis demonstrated late apoptosis in both cell lines, with HFE inducing late apoptosis in 88.72 % of HCT-116 cells and 90.50 % of HT-29 cells, while SCE induced late apoptosis in 58.36 % of HCT-116 cells and 72.22 % of HT-29 cells. Treatment with HFE and SCE led to significant downregulation of the anti-apoptotic gene Bcl-Xl in both HCT116 and HT-29 cells, with HFE showing the strongest effect, especially in HT-29 cells (0.10-fold change). For the pro-apoptotic p53 gene, both extracts increased expression levels, with HFE yielding the highest upregulation in HCT116 cells (1.51-fold change). This suggests that these sponge extracts promote apoptosis by decreasing anti-apoptotic signalling while enhancing pro-apoptotic pathways, potentially aiding in cancer cell viability reduction.The study evaluates the binding affinities of various compounds against Bcl-2, Human Survivin, and KRAS p.G12C, which are key targets in colorectal cancer. Eicosanamide exhibited the highest binding affinities, outperforming both the co-crystallized ligands and Doxorubicin in several cases, making it a promising candidate for further investigation. Hyptolide and Palmitic Acid also showed significant potential, especially against KRAS p.G12C and Bcl-2, indicating their potential as multi-target inhibitors in colorectal cancer therapy. These findings indicate that both sponge extracts possess promising anticancer properties, with SCE being a particularly potent candidate for further investigation and potential therapeutic applications.
本研究采用SRB法研究了采自沙特阿拉伯吉达红海海岸的海绵(Haliclona fascigera, HFE)和海绵(Stylissa carteri, SCE)提取物在不同浓度(0.01 ~ 1000µg/mL)下与阳性对照多柔比星(DOX)相比,对人类结直肠癌细胞株HCT116和HT-29的植物化学成分和抗癌特性。RP-HPLC-QTOF-MS和串联质谱(MS/MS)发现59种代谢物存在,这些代谢物属于HFE和SCE中首次描述的几个类别,以氮化合物为主。SCE表现出更明显的细胞毒性作用,HCT-116细胞系的IC50为1.9±0.04µg/mL, HT-29细胞系的IC50为7.8±0.6µg/mL。相比之下,HFE对HCT-116的IC50值为46.5±1.3µg/mL,对HT-29的IC50值为61.9±2.2µg/mL,表明SCE明显比HFE更有效,特别是在HCT-116细胞系中。细胞周期分析表明,SCE主要诱导s期细胞凋亡,而HFE显著影响g2期细胞凋亡。流式细胞术分析显示,HFE诱导HCT-116细胞和HT-29细胞的晚期凋亡率分别为88.72%和90.50%,SCE诱导HCT-116细胞和HT-29细胞的晚期凋亡率分别为58.36%和72.22%。HFE和SCE均可显著下调HCT116和HT-29细胞的抗凋亡基因Bcl-Xl,其中HFE的作用最强,尤其是在HT-29细胞中(变化幅度为0.10倍)。对于促凋亡p53基因,两种提取物都增加了表达水平,其中HFE在HCT116细胞中表达上调幅度最大(变化1.51倍)。这表明这些海绵提取物通过减少抗凋亡信号传导而增强促凋亡途径来促进细胞凋亡,可能有助于降低癌细胞活力。本研究评估了多种化合物对Bcl-2、Human Survivin、KRAS p.G12C等结直肠癌关键靶点的结合亲和力。Eicosanamide表现出最高的结合亲和力,在一些情况下优于共结晶配体和阿霉素,使其成为进一步研究的有希望的候选者。Hyptolide和Palmitic Acid也显示出显著的潜力,特别是对KRAS p.G12C和Bcl-2,表明它们有可能成为结直肠癌治疗的多靶点抑制剂。这些发现表明,这两种海绵提取物都具有很好的抗癌特性,SCE是进一步研究和潜在治疗应用的特别有效的候选者。
{"title":"Exploring the phytochemical composition and the anticancer potential of Haliclona fascigera and Stylissa carteri Red Sea sponges in colon cancer treatment: A promising approach","authors":"Samah S. Abuzahrah ,&nbsp;Nouf Juaid ,&nbsp;Tahani Bakhsh ,&nbsp;Serag Eldin I. Elbehairi ,&nbsp;Mohammed A. Baghdadi ,&nbsp;Reham Hassan Mekky","doi":"10.1016/j.crbiot.2025.100331","DOIUrl":"10.1016/j.crbiot.2025.100331","url":null,"abstract":"<div><div>This study investigates the phytochemical composition and anticancer properties of extracts from the marine sponges <em>Haliclona fascigera (HFE)</em> and <em>Stylissa carteri</em> (<em>SCE)</em>, collected from the Red Sea coast of Jeddah, Saudi Arabia, against human colorectal cancer cell lines HCT116 and HT-29 employing SRB assay at varying concentrations (ranging from 0.01 to 1000 µg/mL), compared to the positive control doxorubicin (DOX). The RP-HPLC-QTOF-MS and tandem MS/MS revealed the presence of 59 metabolites belonging to several classes that were described for the first time in <em>HFE</em> and <em>SCE</em> with a predominance of nitrogenous compounds. <em>SCE</em> exhibited a markedly more pronounced cytotoxic effect, with IC<sub>50</sub> of 1.9 ± 0.04 µg/mL for the HCT-116 cell line and 7.8 ± 0.6 µg/mL for the HT-29 cell line. In contrast, <em>HFE</em> demonstrated higher IC<sub>50</sub> values of 46.5 ± 1.3 µg/mL for HCT-116 and 61.9 ± 2.2 µg/mL for HT-29, indicating that <em>SCE</em> is significantly more potent than <em>HFE</em>, particularly in the HCT-116 cell line. Cell cycle analysis indicated that <em>SCE</em> predominantly induces apoptosis in the S-phase, while <em>HFE</em> significantly affects the G2-phase. Flow cytometric analysis demonstrated late apoptosis in both cell lines, with <em>HFE</em> inducing late apoptosis in 88.72 % of HCT-116 cells and 90.50 % of HT-29 cells, while <em>SCE</em> induced late apoptosis in 58.36 % of HCT-116 cells and 72.22 % of HT-29 cells. Treatment with <em>HFE</em> and <em>SCE</em> led to significant downregulation of the anti-apoptotic gene Bcl-Xl in both HCT116 and HT-29 cells, with <em>HFE</em> showing the strongest effect, especially in HT-29 cells (0.10-fold change). For the pro-apoptotic p53 gene, both extracts increased expression levels, with <em>HFE</em> yielding the highest upregulation in HCT116 cells (1.51-fold change). This suggests that these sponge extracts promote apoptosis by decreasing anti-apoptotic signalling while enhancing pro-apoptotic pathways, potentially aiding in cancer cell viability reduction.The study evaluates the binding affinities of various compounds against Bcl-2, Human Survivin, and KRAS p.G12C, which are key targets in colorectal cancer. Eicosanamide exhibited the highest binding affinities, outperforming both the co-crystallized ligands and Doxorubicin in several cases, making it a promising candidate for further investigation. Hyptolide and Palmitic Acid also showed significant potential, especially against KRAS p.G12C and Bcl-2, indicating their potential as multi-target inhibitors in colorectal cancer therapy. These findings indicate that both sponge extracts possess promising anticancer properties, with <em>SCE</em> being a particularly potent candidate for further investigation and potential therapeutic applications.</div></div>","PeriodicalId":52676,"journal":{"name":"Current Research in Biotechnology","volume":"10 ","pages":"Article 100331"},"PeriodicalIF":4.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metagenomics of the microbial consortium in the anaerobic co-digestion of food waste and poultry droppings 食物垃圾和家禽粪便厌氧共消化微生物群的宏基因组学研究
IF 4 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.crbiot.2025.100328
Oluwatomisin A. Akinsola , Samuel O. Dahunsi , Ebenezer L. Odekanle , Olajire D. Adedokun
The anaerobic co-digestion of food waste and poultry droppings presents a valuable strategy for achieving sustainable waste management and generating renewable energy. In this study, metagenomic analysis was utilized to investigate the microbial consortium driving the process, with a particular focus on the functional potential and interactions among microbial populations. DNA was extracted from the samples collected from the digester. The16S rRNA sequencing was used for the taxonomic diversity and functional profiling of the microbial community derived from the anaerobic digester. The findings reveal a complex interplay of diverse microbial taxa, predominantly Firmicutes, and Bacteroidetes, which are crucial for the degradation of organic matter and biogas production. The metabolic pathways utilized by the consortium were highlighted. The application of metagenomic tools, such as QIIME2 for data cleaning, BV-BRC for functional annotation, and PICRUSt for metabolic pathway analysis, facilitated a comprehensive functional profiling of the community, allowing the assessment of the contributions of individual taxa to the overall metabolic processes. The results contribute to the growing body of knowledge on microbial ecology in waste treatment systems and pave the way for future research aimed at optimizing anaerobic digestion processes for sustainable energy production.
食物垃圾和家禽粪便的厌氧共消化是实现可持续废物管理和产生可再生能源的宝贵战略。在这项研究中,利用宏基因组分析来研究驱动这一过程的微生物联盟,特别关注微生物群体之间的功能潜力和相互作用。从消化器收集的样本中提取DNA。16s rRNA测序用于厌氧消化池微生物群落的分类多样性和功能分析。这些发现揭示了不同微生物类群的复杂相互作用,主要是厚壁菌门和拟杆菌门,它们对有机物的降解和沼气的产生至关重要。强调了该联盟利用的代谢途径。应用宏基因组工具,如QIIME2进行数据清理,BV-BRC进行功能注释,PICRUSt进行代谢途径分析,促进了群落的全面功能分析,从而可以评估单个分类群对整体代谢过程的贡献。这些结果有助于废物处理系统中微生物生态学知识的增长,并为未来旨在优化厌氧消化过程以实现可持续能源生产的研究铺平道路。
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引用次数: 0
Gut microbiota modulation and health benefits of various fasting regimens 肠道菌群调节和各种禁食方案的健康益处
IF 3.6 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2025-01-01 DOI: 10.1016/j.crbiot.2025.100311
Sumel Ashique , Biplab Debnath , Naheed Mojgani , Mohd. Tariq , Tanweer Haider , Eman Shorog , Sabina Yasmin , Anas Islam , Himanshu Sharma , Md Sadique Hussain , Ayush Madan , Tabarak Malik , Mohammad Yousuf Ansari
Fasting is a diet intervention that has been shown to significantly modulate the gut microbiota, with potential health benefits. This review examines the impact of various fasting regimens, including time-restricted eating (TRE), Ramadan fasting (RF), and long-term fasting, on the composition and function of the gut microbiota in both animal models and human subjects. Studies have shown that fasting can increase microbial diversity, enrich beneficial bacteria such as Faecalibacterium prausnitzii, Roseburia spp., Akkermansia muciniphila, and other Lachnospiraceae, and enhance the production of short-chain fatty acids (SCFA) such as butyrate. These microbiota changes are associated with improvements in metabolic health markers, including body weight, blood pressure, glucose regulation, and lipid profiles, as well as reduced inflammation. However, the persistence of these effects after fasting varies between studies. Dietary changes during fasting, such as meal timing and composition, play a crucial role in shaping the response of the gut microbiota.Although most studies report beneficial results, heterogeneity in results highlights the need for more research to elucidate the relative contributions of factors such as age, baseline diet, habitual microbiota composition, fasting duration, and caloric content. The mechanistic links between specific microbial metabolites and clinical endpoints remain limited, and evidence for the synergistic effects of probiotics with fasting in humans is inconclusive. Future studies should employ standardized fasting protocols, integrate multi-omics approaches, and extend follow-up periods to determine the durability of microbiota and metabolic shifts. Developing personalized fasting strategies tailored to an individual’s baseline microbiota and metabolic phenotype may optimize the therapeutic potential of fasting for gut and metabolic health.
禁食是一种饮食干预,已被证明可以显著调节肠道微生物群,具有潜在的健康益处。本综述研究了各种禁食方案,包括限时饮食(TRE)、斋月禁食(RF)和长期禁食,对动物模型和人类受试者肠道微生物群的组成和功能的影响。研究表明,禁食可以增加微生物多样性,丰富有益菌,如Faecalibacterium prausnitzii, Roseburia spp., Akkermansia muciniphila等毛螺科菌,并促进丁酸盐等短链脂肪酸(SCFA)的产生。这些微生物群的变化与代谢健康指标的改善有关,包括体重、血压、血糖调节和脂质谱,以及炎症的减少。然而,在不同的研究中,禁食后这些影响的持续程度有所不同。禁食期间的饮食变化,如用餐时间和组成,在塑造肠道微生物群的反应中起着至关重要的作用。尽管大多数研究报告了有益的结果,但结果的异质性强调了需要更多的研究来阐明年龄、基线饮食、习惯微生物群组成、禁食时间和热量含量等因素的相对贡献。特定微生物代谢物与临床终点之间的机制联系仍然有限,益生菌与人类禁食的协同作用的证据尚无定论。未来的研究应采用标准化的禁食方案,整合多组学方法,并延长随访时间,以确定微生物群的持久性和代谢变化。根据个体的基线微生物群和代谢表型制定个性化的禁食策略,可能会优化禁食对肠道和代谢健康的治疗潜力。
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引用次数: 0
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Current Research in Biotechnology
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