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El Fawal G, Sobhy SE, Hafez EE. Biological activities of fig latex -loaded cellulose acetate/poly(ethylene oxide) nanofiber for potential therapeutics: Anticancer and antioxidant material. Int J Biol Macromol 2024; 270:132176. [PMID: 38750845 DOI: 10.1016/j.ijbiomac.2024.132176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/14/2024] [Accepted: 05/05/2024] [Indexed: 05/19/2024]
Abstract
Cancer is a fatal disease, and unfortunately, the anticancer drugs harm normal cells. Plant's extracts are the golden key to solving this issue. In this research, fig latex - from Ficus carica- was encapsulated using cellulose acetate (CA) and poly (ethylene oxide) (PEO) polymers via electrospinning method (Fig@CA/PEO). Fig@CA/PEO nanofiber scaffold was characterized by thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The average fiber diameter was decreased with an increase in latex concentration from 715 nm to 583 nm. FT-IR spectroscopy indicated the presence of fig latex in Fig@CA/PEO nanofibers. Compared to 5-fluorouracil, Fig@CA/PEO nanofiber scaffold considered safe towards normal cells (WI-38). Moreover, the nanofiber scaffold was efficient against colon cancer cells (Caco) and liver cancer cells (HepG2) as it demonstrated IC50 values for cells by 23.97 μg/mL and 23.96 μg/mL, respectively. Besides, the nanofiber scaffold revealed mechanistic variations in apoptotic oncogenes; described by the upregulation of BCL2 and P21, combined by downregulation of p53 and TNF. Moreover, the nanofiber scaffold showed antioxidant activity counting 33.4, 36 and 41 % of DPPH scavenging as the fig latex concentration increased. The results demonstrate that the Fig@CA/PEO nanofiber scaffold is a promising substitute to traditional chemotherapy.
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Affiliation(s)
- Gomaa El Fawal
- Polymer Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, 21934, Alexandria, Egypt.
| | - Sherien E Sobhy
- Plant Protection and Bimolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg EL-Arab City, 21934, Alexandria, Egypt
| | - Elsayed E Hafez
- Plant Protection and Bimolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg EL-Arab City, 21934, Alexandria, Egypt
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Alothman A, Emwas AH, Singh U, Jaremko M, Agusti S. Metabolomics-based analysis of the diatom Cheatoceros tenuissimus combining NMR and GC-MS techniques. MethodsX 2024; 12:102695. [PMID: 38595808 PMCID: PMC11001764 DOI: 10.1016/j.mex.2024.102695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/02/2024] [Indexed: 04/11/2024] Open
Abstract
Metabolomics, a recent addition to omics sciences, studies small molecules across plants, animals, humans, and marine organisms. Nuclear magnetic resonance (NMR) and gas chromatography-mass spectrometry (GC-MS) are widely used in those studies, including microalgae metabolomics. NMR is non-destructive and highly reproducible but has limited sensitivity, which could be supplemented by joining GC-MS analysis. Extracting metabolites from macromolecules requires optimization for trustworthy results. Different extraction methods yield distinct profiles, emphasizing the need for optimization. The results indicated that the optimized extraction procedure successfully identified NMR and GC-MS-based metabolites in MeOH, CHCl3, and H2O extraction solvents. The findings represented the spectral information related to carbohydrates, organic molecules, and amino acids from the water-soluble metabolites fraction and a series of fatty acid chains, lipids, and sterols from the lipid fraction. Our study underscores the benefit of combining NMR and GC-MS techniques to comprehensively understand microalgae metabolomes, including high and low metabolite concentrations and abundances.•In this study, we focused on optimizing the extraction procedure and combining NMR and GC-MS techniques to overcome the low NMR sensitivity and the different detected range limits of NMR and GC-MS.•We explored metabolome diversity in a tropical strain of the small cells' diatom Cheatoceros tenuissimus.
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Affiliation(s)
- Afrah Alothman
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental and Science and Engineering, Marine Science Program, Thuwal, 23955-6900, Saudi Arabia
| | - Abdul-Hamid Emwas
- King Abdullah University of Science and Technology (KAUST), Core Labs, Thuwal, 23955-6900, Saudi Arabia
| | - Upendra Singh
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental and Science and Engineering, Thuwal, 23955-6900, Saudi Arabia
| | - Mariusz Jaremko
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental and Science and Engineering, Thuwal, 23955-6900, Saudi Arabia
| | - Susana Agusti
- King Abdullah University of Science and Technology (KAUST), Biological and Environmental and Science and Engineering, Marine Science Program, Thuwal, 23955-6900, Saudi Arabia
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Sang Y, Gao J, Han X, Liang T, Chen T, Zhao Y. Preparation and sustained release of diatomite incorporated and Eudragit L100 coated hydroxypropyl cellulose/chitosan aerogel microspheres. Int J Biol Macromol 2024; 267:131447. [PMID: 38588843 DOI: 10.1016/j.ijbiomac.2024.131447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/19/2024] [Accepted: 04/05/2024] [Indexed: 04/10/2024]
Abstract
The drug encapsulation efficiency, release rate and time, sustained release, and stimulus-response of carriers are very important for drug delivery. However, these always cannot obtained for the carrier with a single component. To improve the comprehensive performance of chitosan-based carriers for 5-Fu delivery, diatomite-incorporated hydroxypropyl cellulose/chitosan (DE/HPC/CS) composite aerogel microspheres were fabricated for the release of 5-fluorouracil (5-Fu), and the release performance was regulated with the content of diatomite, pH value, and external coating material. Firstly, the 5-Fu loaded DE/HPC/CS composite aerogel microspheres and Eudragit L100 coated microspheres were prepared with cross-linking followed by freeze-drying, and characterized by SEM, EDS, FTIR, XRD, DSC, TG, and swelling. The obtained aerogel microspheres have a diameter of about 0.5 mm, the weight percentage of F and Si elements on the surface are 0.55 % and 0.78 % respectively. The glass transition temperature increased from 179 °C to 181 °C and 185 °C with the incorporation of DE and coating of Eudragit, and the equilibrium swelling percentage of DE/HPC/CS (1.5:3:2) carriers are 101.52 %, 45.27 %, 67.32 % at pH 1.2, 5.0, 7.4, respectively. Then, the effect of DE content on the drug loading efficiency of DE/HPC/CS@5-Fu was investigated, with the increase of DE content, the highest encapsulation efficiency was 82.6 %. Finally, the release behavior of DE incorporated and Eudragit L100 Coated microspheres were investigated under different pH values, and evaluated with four kinetic models. The results revealed that the release rate of 5-Fu decreased with the increase of DE content, sustained release with extending time and pH-responsive were observed for the Eudragit-coated aerogel microspheres.
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Affiliation(s)
- Yanan Sang
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Jie Gao
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China.
| | - Xiaobing Han
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Tian Liang
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Tao Chen
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Yuan Zhao
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China.
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Hernández-Urcera J, Romero A, Cruz P, Vasconcelos V, Figueras A, Novoa B, Rodríguez F. Screening of Microalgae for Bioactivity with Antiviral, Antibacterial, Anti-Inflammatory and Anti-Cancer Assays. BIOLOGY 2024; 13:255. [PMID: 38666867 PMCID: PMC11048355 DOI: 10.3390/biology13040255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024]
Abstract
Marine microalgae are a rich reservoir of natural compounds, including bioactives. Nonetheless, these organisms remain fairly unexplored despite their potential biotechnological applications. Culture collections with diverse taxonomic groups and lifestyles are a good source to unlock this potential and discover new molecules for multiple applications such as the treatment of human pathologies or the production of aquaculture species. In the present work extracts from thirty-three strains (including twenty dinoflagellates, four diatoms and nine strains from seven other algal classes), cultivated under identical conditions, were examined for their antiviral, antibacterial, anti-inflammatory and anti-cancer activities. Among these, antiviral and anti-inflammatory activities were detected in a few strains while the antibacterial tests showed positive results in most assays. In turn, most trials did not show any anti-cancer activity. Significant differences were observed between species within the same class, in particular dinoflagellates, which were better represented in this study. These preliminary findings pave the way for an in-depth characterization of the extracts with highest signals in each test, the identification of the compounds responsible for the biological activities found and a further screening of the CCVIEO culture collection.
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Affiliation(s)
- Jorge Hernández-Urcera
- Centro Oceanográfico de Vigo (IEO, CSIC), 36390 Vigo, Spain;
- Instituto de Investigaciones Marinas (IIM, CSIC), 36208 Vigo, Spain; (A.R.); (A.F.)
| | - Alejandro Romero
- Instituto de Investigaciones Marinas (IIM, CSIC), 36208 Vigo, Spain; (A.R.); (A.F.)
| | - Pedro Cruz
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), 4450-208 Matosinhos, Portugal; (P.C.); (V.V.)
| | - Vitor Vasconcelos
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), 4450-208 Matosinhos, Portugal; (P.C.); (V.V.)
- Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal
| | - Antonio Figueras
- Instituto de Investigaciones Marinas (IIM, CSIC), 36208 Vigo, Spain; (A.R.); (A.F.)
| | - Beatriz Novoa
- Instituto de Investigaciones Marinas (IIM, CSIC), 36208 Vigo, Spain; (A.R.); (A.F.)
| | - Francisco Rodríguez
- Instituto de Investigaciones Marinas (IIM, CSIC), 36208 Vigo, Spain; (A.R.); (A.F.)
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Bouyahya A, Bakrim S, Chamkhi I, Taha D, El Omari N, El Mneyiy N, El Hachlafi N, El-Shazly M, Khalid A, Abdalla AN, Goh KW, Ming LC, Goh BH, Aanniz T. Bioactive substances of cyanobacteria and microalgae: Sources, metabolism, and anticancer mechanism insights. Biomed Pharmacother 2024; 170:115989. [PMID: 38103309 DOI: 10.1016/j.biopha.2023.115989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/21/2023] [Accepted: 12/04/2023] [Indexed: 12/19/2023] Open
Abstract
Cyanobacteria and microalgae contain various phytochemicals, including bioactive components in the form of secondary metabolites, namely flavonoids, phenolic acids, terpenoids, and tannins, with remarkable anticancer effects. This review highlights the recent advances in bioactive compounds, with potential anticancer activity, produced by cyanobacteria and microalgae. Previous in vitro investigations showed that many of these bioactive compounds exhibit potent effects against different human cancer types, such as leukemia and breast cancers. Multiple mechanisms implicated in the antitumor effect of these compounds were elucidated, including their ability to target cellular, subcellular, and molecular checkpoints linked to cancer development and promotion. Recent findings have highlighted various mechanisms of action of bioactive compounds produced by cyanobacteria and microalgae, including induction of autophagy and apoptosis, inhibition of telomerase and protein kinases, as well as modulation of epigenetic modifications. In vivo investigations have demonstrated a potent anti-angiogenesis effect on solid tumors, as well as a reduction in tumor volume. Some of these compounds were examined in clinical investigations for certain types of cancers, making them potent candidates/scaffolds for antitumor drug development.
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Affiliation(s)
- Abdelhakim Bouyahya
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, Mohammed V University in Rabat, 10106, Morocco.
| | - Saad Bakrim
- Geo-Bio-Environment Engineering and Innovation Laboratory, Molecular Engineering, Biotechnologies, and Innovation Team, Polydisciplinary Faculty of Taroudant, Ibn Zohr University, Agadir, Morocco
| | - Imane Chamkhi
- Geo-Biodiversity and Natural Patrimony Laboratory (GeoBio), Geophysics, Natural Patrimony Research Center (GEOPAC), Scientific Institute, Mohammed V University in Rabat, Morocco
| | - Douae Taha
- Laboratoire de Spectroscopie, Modélisation Moléculaire, Matériaux, Nanomatériaux, Eau et Environnement, CERNE2D, Faculté des Sciences, Mohammed V University, Rabat 10106, Morocco
| | - Nasreddine El Omari
- Laboratory of Histology, Embryology, and Cytogenetic, Faculty of Medicine and Pharmacy, Mohammed V University in Rabat, Rabat 10100, Morocco
| | - Naoual El Mneyiy
- Laboratory of Pharmacology, National Agency of Medicinal and Aromatic Plants, 34025 Taouanate, Morocco
| | - Naoufal El Hachlafi
- Microbial Biotechnology and Bioactive Molecules Laboratory, Sciences and Technologies Faculty, Sidi Mohamed Ben Abdellah University, Imouzzer Road Fez, Fez 30003, Morocco
| | - Mohamed El-Shazly
- Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University, Cairo 11566, Egypt; Pharmaceutical Biology Department, Faculty of Pharmacy and Biotechnology, The German University in Cairo, Cairo 11432, Egypt
| | - Asaad Khalid
- Substance Abuse and Toxicology Research Center, Jazan University, P.O. Box: 114, Jazan 45142, Saudi Arabia; Medicinal and Aromatic Plants and Traditional Medicine Research Institute, National Center for Research, P.O. Box 2404, Khartoum, Sudan.
| | - Ashraf N Abdalla
- Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Khang Wen Goh
- Faculty of Data Science and Information Technology, INTI International University, 71800 Nilai, Malaysia
| | - Long Chiau Ming
- Department of Medical Sciences, School of Medical and Life Sciences, Sunway University, Sunway City 47500, Malaysia.
| | - Bey Hing Goh
- Sunway Biofunctional Molecules Discovery Centre (SBMDC), School of Medical and Life Sciences, Sunway University, 47500 Sunway City, Malaysia; College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Tarik Aanniz
- Biotechnology Laboratory (MedBiotech), Bioinova Research Center, Rabat Medical and Pharmacy School, Mohammed V University, Rabat, Morocco
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6
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Feng S, Xie X, Liu J, Li A, Wang Q, Guo D, Li S, Li Y, Wang Z, Guo T, Zhou J, Tang DYY, Show PL. A potential paradigm in CRISPR/Cas systems delivery: at the crossroad of microalgal gene editing and algal-mediated nanoparticles. J Nanobiotechnology 2023; 21:370. [PMID: 37817254 PMCID: PMC10563294 DOI: 10.1186/s12951-023-02139-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/03/2023] [Indexed: 10/12/2023] Open
Abstract
Microalgae as the photosynthetic organisms offer enormous promise in a variety of industries, such as the generation of high-value byproducts, biofuels, pharmaceuticals, environmental remediation, and others. With the rapid advancement of gene editing technology, CRISPR/Cas system has evolved into an effective tool that revolutionised the genetic engineering of microalgae due to its robustness, high target specificity, and programmability. However, due to the lack of robust delivery system, the efficacy of gene editing is significantly impaired, limiting its application in microalgae. Nanomaterials have become a potential delivery platform for CRISPR/Cas systems due to their advantages of precise targeting, high stability, safety, and improved immune system. Notably, algal-mediated nanoparticles (AMNPs), especially the microalgae-derived nanoparticles, are appealing as a sustainable delivery platform because of their biocompatibility and low toxicity in a homologous relationship. In addition, living microalgae demonstrated effective and regulated distribution into specified areas as the biohybrid microrobots. This review extensively summarised the uses of CRISPR/Cas systems in microalgae and the recent developments of nanoparticle-based CRISPR/Cas delivery systems. A systematic description of the properties and uses of AMNPs, microalgae-derived nanoparticles, and microalgae microrobots has also been discussed. Finally, this review highlights the challenges and future research directions for the development of gene-edited microalgae.
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Affiliation(s)
- Shuying Feng
- Medical College, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China.
| | - Xin Xie
- Medical College, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China
| | - Junjie Liu
- Medical College, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China
| | - Aifang Li
- Medical College, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China
| | - Qianqian Wang
- Medical College, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China
| | - Dandan Guo
- Medical College, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China
| | - Shuxuan Li
- Medical College, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China
| | - Yalan Li
- Medical College, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China
| | - Zilong Wang
- Medical College, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China
| | - Tao Guo
- Department of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, Henan, China.
| | - Jin Zhou
- Institute for Ocean Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, Guangdong, China.
| | - Doris Ying Ying Tang
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, 43500, Semenyih, Malaysia
| | - Pau Loke Show
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
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Tramontano C, De Stefano L, Rea I. Diatom-Based Nanomedicine for Colorectal Cancer Treatment: New Approaches for Old Challenges. Mar Drugs 2023; 21:md21050266. [PMID: 37233460 DOI: 10.3390/md21050266] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/27/2023] Open
Abstract
Colorectal cancer is among the most prevalent and lethal cancers globally. To address this emergency, countries have developed diffuse screening programs and innovative surgical techniques with a consequent decrease in mortality rates in non-metastatic patients. However, five years after diagnosis, metastatic CRC is still characterized by less than 20% survival. Most patients with metastatic CRC cannot be surgically treated. For them, the only option is treatment with conventional chemotherapies, which cause harmful side effects in normal tissues. In this context, nanomedicine can help traditional medicine overcome its limits. Diatomite nanoparticles (DNPs) are innovative nano-based drug delivery systems derived from the powder of diatom shells. Diatomite is a porous biosilica largely found in many areas of the world and approved by the Food and Drug Administration (FDA) for pharmaceutical and animal feed formulations. Diatomite nanoparticles with a size between 300 and 400 nm were shown to be biocompatible nanocarriers capable of delivering chemotherapeutic agents against specific targets while reducing off-target effects. This review discusses the treatment of colorectal cancer with conventional methods, highlighting the drawbacks of standard medicine and exploring innovative options based on the use of diatomite-based drug delivery systems. Three targeted treatments are considered: anti-angiogenetic drugs, antimetastatic drugs, and immune checkpoint inhibitors.
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Affiliation(s)
- Chiara Tramontano
- Institute of Applied Science and Intelligent Systems (ISASI), National Research Council of Italy-Naples Unit, Via Pietro Castellino 111, 80131 Naples, Italy
- Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
| | - Luca De Stefano
- Institute of Applied Science and Intelligent Systems (ISASI), National Research Council of Italy-Naples Unit, Via Pietro Castellino 111, 80131 Naples, Italy
| | - Ilaria Rea
- Institute of Applied Science and Intelligent Systems (ISASI), National Research Council of Italy-Naples Unit, Via Pietro Castellino 111, 80131 Naples, Italy
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Calabrone L, Carlini V, Noonan DM, Festa M, Ferrario C, Morelli D, Macis D, Fontana A, Pistelli L, Brunet C, Sansone C, Albini A. Skeletonema marinoi Extracts and Associated Carotenoid Fucoxanthin Downregulate Pro-Angiogenic Mediators on Prostate Cancer and Endothelial Cells. Cells 2023; 12:cells12071053. [PMID: 37048126 PMCID: PMC10093511 DOI: 10.3390/cells12071053] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 03/17/2023] [Accepted: 03/24/2023] [Indexed: 04/03/2023] Open
Abstract
The exploration of natural preventive molecules for nutraceutical and pharmaceutical use has recently increased. In this scenario, marine microorganisms represent an underestimated source of bioactive products endowed with beneficial effects on health that include anti-oxidant, anti-inflammatory, differentiating, anti-tumor, and anti-angiogenic activities. Here, we tested the potential chemopreventive and anti-angiogenic activities of an extract from the marine coastal diatom Skeletonema marinoi Sarno and Zingone (Sm) on prostate cancer (PCa) and endothelial cells. We also tested one of the main carotenoids of the diatom, the xanthophyll pigment fucoxanthin (Fuco). Fuco from the literature is a potential candidate compound involved in chemopreventive activities. Sm extract and Fuco were able to inhibit PCa cell growth and hinder vascular network formation of endothelial cells. The reduced number of cells was partially due to growth inhibition and apoptosis. We studied the molecular targets by qPCR and membrane antibody arrays. Angiogenesis and inflammation molecules were modulated. In particular, Fuco downregulated the expression of Angiopoietin 2, CXCL5, TGFβ, IL6, STAT3, MMP1, TIMP1 and TIMP2 in both prostate and endothelial cells. Our study confirmed microalgae-derived drugs as potentially relevant sources of novel nutraceuticals, providing candidates for potential dietary or dietary supplement intervention in cancer prevention approaches.
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Affiliation(s)
- Luana Calabrone
- IRCCS MultiMedica, 20138 Milan, Italy
- Correspondence: (L.C.); (A.A.)
| | | | - Douglas M. Noonan
- Department of Biotechnology and Life Sciences, University of Insubria, 21100 Varese, Italy
| | | | | | | | - Debora Macis
- IRCCS Istituto Europeo di Oncologia IEO, 20141 Milan, Italy
| | - Angelo Fontana
- Institute of Biomolecular Chemistry, Italian National Research Council (CNR), 80078 Pozzuoli, Italy
- Department of Biology, Università di Napoli “Federico II”, 80126 Napoli, Italy
| | - Luigi Pistelli
- Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy
| | | | | | - Adriana Albini
- IRCCS Istituto Europeo di Oncologia IEO, 20141 Milan, Italy
- Correspondence: (L.C.); (A.A.)
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9
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Seaweed-associated heterotrophic Bacillus altitudinis MTCC13046: a promising marine bacterium for use against human hepatocellular adenocarcinoma. Arch Microbiol 2022; 205:10. [PMID: 36459289 DOI: 10.1007/s00203-022-03346-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 11/06/2022] [Accepted: 11/17/2022] [Indexed: 12/05/2022]
Abstract
Since the report of the antibiotic with anticancer properties, scientists have been focusing to isolate and characterize novel anti-microbial natural products possessing anticancer activities. The current study describes the production of seaweed-associated heterotrophic Bacillus altitudinis MTCC13046 with potential anticancer properties. The bacterium was screened for its capacity to diminish the cell proliferation of the human hepatocellular adenocarcinoma (HepG2) cell line, without upsetting the normal cells. The bacterial extract showed anticancer properties in a dose-reactive form against HepG2 (IC50, half maximal inhibitory concentration ~ 29.5 µg/ml) on tetrazolium bromide analysis with less significant cytotoxicity on common fibroblast (HDF) cells (IC50 ~ 77 µg/ml). The potential antioxidant ability of the organic extract of B. altitudinis MTCC13046 (IC90 133 µg/ml) could corroborate its capacity to attenuate the pathophysiology leading to carcinogenesis. The results of the apoptosis assay showed that the crude extracts of B. altitudinis maintained 68% viability in normal cells compared to 11% in the cancer cells (IC50 76.9 µg/ml). According to the findings, B. altitudinis MTCC13046 could be used to develop prospective anticancer agents.
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10
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Yunusa UM, Urek RO. Determination of phenolic compounds in Diospyros lotus by RP-HPLC-DAD and evaluation of antioxidant and cytotoxic properties. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01696-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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11
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Recent advances in the bio-application of microalgae-derived biochemical metabolites and development trends of photobioreactor-based culture systems. 3 Biotech 2022; 12:260. [PMID: 36072963 PMCID: PMC9441132 DOI: 10.1007/s13205-022-03327-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 08/24/2022] [Indexed: 11/28/2022] Open
Abstract
Microalgae are microscopic algae in sizes ranging from a few micrometers to several hundred micrometers. On average, half of the oxygen in the atmosphere is produced by the photosynthetic process of microalgae, so the role of these microorganisms in the life cycle of the planet is very significant. Pharmaceutical products derived from microalgae and commercial developments of a variety of supplements extracted from them originate from a variety of their specific secondary metabolites. Many of these microalgae are a reservoir of unique biological compounds including carotenoids, antioxidants, fatty acids, polysaccharides, enzymes, polymers, peptides, pigments, toxins and sterols with antimicrobial, antiviral, antifungal, antiparasitic, anticoagulant, and anticancer properties. The present work begins with an introduction of the importance of microalgae in renewable fuels and biodiesel production, the development of healthy food industry, and the creation of optimal conditions for efficient biomass yield. This paper provides the latest research related to microalgae-derived substances in the field of improving drug delivery, immunomodulatory, and anticancer attributes. Also, the latest advances in algal biocompounds to combat the COVID-19 pandemic are presented. In the subject of cultivation and growth of microalgae, the characteristics of different types of photobioreactors, especially their latest forms, are fully discussed along with their advantages and obstacles. Finally, the potential of microalgae biomass in biotechnological applications, biofuel production, as well as various biomass harvesting methods are described.
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12
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Novel Drug and Gene Delivery System and Imaging Agent Based on Marine Diatom Biosilica Nanoparticles. Mar Drugs 2022; 20:md20080480. [PMID: 36005484 PMCID: PMC9410069 DOI: 10.3390/md20080480] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/16/2022] [Accepted: 07/18/2022] [Indexed: 11/22/2022] Open
Abstract
Mesoporous silica nanoparticles (MSNs) have great potential for applications as a drug delivery system (DDS) due to their unique properties such as large pore size, high surface area, biocompatibility, biodegradability, and stable aqueous dispersion. The MSN-mediated DDS can carry chemotherapeutic agents, optical sensors, photothermal agents, short interfering RNA (siRNA), and gene therapeutic agents. The MSN-assisted imaging techniques are applicable in cancer diagnosis. However, their synthesis via a chemical route requires toxic chemicals and is challenging, time-consuming, and energy-intensive, making the process expensive and non-viable. Fortunately, nature has provided a viable alternative material in the form of biosilica from marine resources. In this review, the applications of biosilica nanoparticles synthesized from marine diatoms in the field of drug delivery, biosensing, imaging agents, and regenerative medicine, are highlighted. Insights into the use of biosilica in the field of DDSs are elaborated, with a focus on different strategies to improve the physico-chemical properties with regards to drug loading and release efficiency, targeted delivery, and site-specific binding capacity by surface functionalization. The limitations, as well as the future scope to develop them as potential drug delivery vehicles and imaging agents, in the overall therapeutic management, are discussed.
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Microalgae as Potential Sources of Bioactive Compounds for Functional Foods and Pharmaceuticals. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12125877] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Microalgae are an untapped source of bioactive compounds with various biotechnological applications. Several species are industrially produced and commercialized for the feed or cosmetic industries, however, other applications in the functional food and pharmaceutical markets can be foreseen. In this study, nine industrial/commercial species were evaluated for in vitro antioxidant, calcium-chelating, anti-tumoral, and anti-inflammatory activities. The most promising extracts were fractionated yielding several promising fractions namely, of Tetraselmis striata CTP4 with anti-inflammatory activity (99.0 ± 0.8% reduction in TNF-α production in LPS stimulated human macrophages at 50 µg/mL), of Phaeodactylum Tricornutum with cytotoxicity towards cancerous cell lines (IC50 = 22.3 ± 1.8 μg/mL and 27.5 ± 1.6 μg/mL for THP-1 and HepG2, respectively) and of Porphyridium sp. and Skeletonema sp. with good chelating activity for iron, copper and calcium (IC50 = 0.047, 0.272, 0.0663 mg/mL and IC50 = 0.055, 0.240, 0.0850 mg/mL, respectively). These fractions were chemically characterized by GC–MS after derivatization and in all, fatty acids at various degrees of unsaturation were the most abundant compounds. Some of the species under study proved to be potentially valuable sources of antioxidant, metal chelators, anti-tumoral and anti-inflammatory compounds with possible application in the functional food and pharmaceutical industries.
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Eco-Friendly and Effective Diatomaceous Earth/Peat (DEP) Microbial Carriers in the Anaerobic Biodegradation of Food Waste Products. ENERGIES 2022. [DOI: 10.3390/en15093442] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This article aims to present the results of research on anaerobic digestion (AD) of waste wafers (WF-control) and co-substrate system—waste wafers and cheese (WFC-control), combined with digested sewage sludge. The aim of this study was to assess the physicochemical parameters of the diatomaceous earth/peat (DEP; 3:1) carrier material and to verify its impact on the enzymatic activity and the process performance. The experiment was conducted in a laboratory, in a periodical mode of operation of bioreactors, under mesophilic conditions. The results of analyses of morphological-dispersive, spectroscopic, adsorption, thermal, and microbiological properties confirmed that the tested carrier material can be an excellent option to implement in biotechnological processes, especially in anaerobic digestion. As part of the experiment, the substrates, feedstock, and fermenting slurry were subjected to the analysis for standard process parameters. Monitoring of the course of AD was performed by measuring the values of key parameters for the recognition of the stability of the process: pH, VFA/TA ratio (volatile fatty acids/total alkalinity), the content of NH4+, and dehydrogenase activity, as an indicator of the intensity of respiratory metabolism of microorganisms. No significant signals of destabilization of the AD process were registered. The highest dehydrogenase activity, in the course of the process, was maintained in the WFC + DEP system. The microbial carrier DEP, used for the first time in the anaerobic digestion, had a positive effect on the yield of methane production. As a result, an increase in the volume of produced biogas was obtained for samples fermented with DEP carrier material for WF + DEP by 13.18% to a cumulative methane yield of 411.04 m3 Mg−1 VS, while for WFC + DEP by 12.85% to 473.91 m3 Mg−1 VS.
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Dawiec-Liśniewska A, Podstawczyk D, Bastrzyk A, Czuba K, Pacyna-Iwanicka K, Okoro OV, Shavandi A. aNew trends in biotechnological applications of photosynthetic microorganisms. Biotechnol Adv 2022; 59:107988. [DOI: 10.1016/j.biotechadv.2022.107988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 05/17/2022] [Accepted: 05/17/2022] [Indexed: 12/20/2022]
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Gargouch N, Touchard R, Marec H, Luc Mouget J, Pruvost J, Massé A. Submerged membrane photobioreactor for the cultivation of Haslea ostrearia and the continuous extraction of extracellular marennine. BIORESOURCE TECHNOLOGY 2022; 350:126922. [PMID: 35240277 DOI: 10.1016/j.biortech.2022.126922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/25/2022] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
Haslea ostrearia is a marine diatom known to produce and excrete the marenine blue pigment. Its controlled, continuous and intensified cultivation remains a challenge. Thus, a submerged membrane photobioreactor (MPBR) was implemented in order to simultaneously and continuously cultivate H. ostrearia and extract marennine. The MPBR was compared with a similar air-lift photobioreactor (without membrane), both working at a dilution rate equal to 0.1, 0.3 and 0.5 d-1. Contrary to the air-lift photobioreactor, the MPBR successfully operated at high dilution rate without biomass washout. The MPBR allowed continuously recovering marennine and reaching high cell density (555 ± 25 × 106 cells L-1 at D = 0.1 d-1), marennine concentration (36.00 ± 0.02 mg L-1 at D = 0.1 d-1) and marenine productivity (7.20 ± 0.01 mg L-1 d-1 at D = 0.5 d-1).
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Affiliation(s)
- Nesrine Gargouch
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F-44600 Saint-Nazaire, France
| | | | - Hélène Marec
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F-44600 Saint-Nazaire, France
| | - Jean Luc Mouget
- Mer-Molécules-Santé, MMS, FR CNRS 3473, IUML, Le Mans Université, 72000 Le Mans, France
| | - Jérémy Pruvost
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F-44600 Saint-Nazaire, France
| | - Anthony Massé
- Université de Nantes, Oniris, CNRS, GEPEA, UMR 6144, F-44600 Saint-Nazaire, France.
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Ahirwar A, Kesharwani K, Deka R, Muthukumar S, Khan MJ, Rai A, Vinayak V, Varjani S, Joshi KB, Morjaria S. Microalgal drugs: A promising therapeutic reserve for the future. J Biotechnol 2022; 349:32-46. [PMID: 35339574 DOI: 10.1016/j.jbiotec.2022.03.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/17/2022] [Accepted: 03/20/2022] [Indexed: 12/16/2022]
Abstract
Over the decades, a variety of chemically synthesized drugs are being used to cure existing diseases but often these drugs could not be effectively employed for the treatment of serious and newly emerging diseases. Fortunately, in nature there occurs immense treasure of plants and microorganisms which are living jewels with respect to their richness of medically important metabolites of high value. Hence, amongst the existing microorganism(s), the marine world offers a plethora of biological entities that can contribute to alleviate numerous human ailments. Algae are one such photosynthetic microorganism found in both marine as well as fresh water which are rich source of metabolites known for their nutrient content and health benefits. Various algal species like Haematococcus, Diatoms, Griffithsia, Chlorella, Spirulina, Ulva, etc. have been identified and isolated to produce biologically active and pharmaceutically important high value compounds like astaxanthin, fucoxanthin, sulphur polysaccharides mainly galactose, rhamnose, xylose, fucose etc., which show antimicrobial, antifungal, anti-cancer, and antiviral activities. However, the production of either of these bio compounds is favored under conditions of stress. This review gives detailed information on various nutraceutical metabolites extracted from algae. Additionally focus has been made on the role of these bio compounds extracted from algae especially sulphur polysaccharides to treat several diseases with prospective treatment for SARS-CoV-2. Lastly it covers the knowledge gaps and future perspectives in this area of research.
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Affiliation(s)
- Ankesh Ahirwar
- Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Science, Dr. Harisingh Gour Central University, Sagar (MP) 470003, India
| | - Khushboo Kesharwani
- Department of Chemistry, Dr. Harisingh Gour Central University, Sagar (MP) 470003, India
| | - Rahul Deka
- Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Science, Dr. Harisingh Gour Central University, Sagar (MP) 470003, India
| | - Shreya Muthukumar
- Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Science, Dr. Harisingh Gour Central University, Sagar (MP) 470003, India
| | - Mohd Jahir Khan
- Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Science, Dr. Harisingh Gour Central University, Sagar (MP) 470003, India
| | - Anshuman Rai
- MMU, Deemed University, School of Engineering, Department of Biotechnology, Ambala, Haryana, 133203, India
| | - Vandana Vinayak
- Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Science, Dr. Harisingh Gour Central University, Sagar (MP) 470003, India.
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, Gujarat, 382 010, India.
| | - Khashti Ballabh Joshi
- Department of Chemistry, Dr. Harisingh Gour Central University, Sagar (MP) 470003, India
| | - Shruti Morjaria
- Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Science, Dr. Harisingh Gour Central University, Sagar (MP) 470003, India
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Matulja D, Vranješević F, Kolympadi Markovic M, Pavelić SK, Marković D. Anticancer Activities of Marine-Derived Phenolic Compounds and Their Derivatives. Molecules 2022; 27:molecules27041449. [PMID: 35209235 PMCID: PMC8879422 DOI: 10.3390/molecules27041449] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/15/2022] [Accepted: 02/19/2022] [Indexed: 12/24/2022] Open
Abstract
Since the middle of the last century, marine organisms have been identified as producers of chemically and biologically diverse secondary metabolites which have exerted various biological activities including anticancer, anti-inflammatory, antioxidant, antimicrobial, antifouling and others. This review primarily focuses on the marine phenolic compounds and their derivatives with potent anticancer activity, isolated and/or modified in the last decade. Reports on the elucidation of their structures as well as biosynthetic studies and total synthesis are also covered. Presented phenolic compounds inhibited cancer cells proliferation or migration, at sub-micromolar or nanomolar concentrations (lamellarins D (37), M (38), K (39), aspergiolide B (41), fradimycin B (62), makulavamine J (66), mayamycin (69), N-acetyl-N-demethylmayamycin (70) or norhierridin B (75)). In addition, they exhibited anticancer properties by a diverse biological mechanism including induction of apoptosis or inhibition of cell migration and invasive potential. Finally, phlorotannins 1–7 and bromophenols 12–29 represent the most researched phenolic compounds, of which the former are recognized as protective agents against UVB or gamma radiation-induced skin damages. Finally, phenolic metabolites were assorted into six main classes: phlorotannins, bromophenols, flavonoids, coumarins, terpenophenolics, quinones and hydroquinones. The derivatives that could not be attributed to any of the above-mentioned classes were grouped in a separate class named miscellaneous compounds.
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Affiliation(s)
- Dario Matulja
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia; (D.M.); (F.V.); (M.K.M.)
| | - Filip Vranješević
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia; (D.M.); (F.V.); (M.K.M.)
| | - Maria Kolympadi Markovic
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia; (D.M.); (F.V.); (M.K.M.)
| | - Sandra Kraljević Pavelić
- Faculty of Health Studies, University of Rijeka, Viktora Cara Emina 5, 51000 Rijeka, Croatia
- Correspondence: (S.K.P.); (D.M.); Tel.: +385-51-688-266 (S.K.P.); +385-91-500-8676 (D.M.)
| | - Dean Marković
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia; (D.M.); (F.V.); (M.K.M.)
- Correspondence: (S.K.P.); (D.M.); Tel.: +385-51-688-266 (S.K.P.); +385-91-500-8676 (D.M.)
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Recent Antimicrobial Responses of Halophilic Microbes in Clinical Pathogens. Microorganisms 2022; 10:microorganisms10020417. [PMID: 35208871 PMCID: PMC8874722 DOI: 10.3390/microorganisms10020417] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 01/27/2023] Open
Abstract
Microbial pathogens that cause severe infections and are resistant to drugs are simultaneously becoming more active. This urgently calls for novel effective antibiotics. Organisms from extreme environments are known to synthesize novel bioprospecting molecules for biomedical applications due to their peculiar characteristics of growth and physiological conditions. Antimicrobial developments from hypersaline environments, such as lagoons, estuaries, and salterns, accommodate several halophilic microbes. Salinity is a distinctive environmental factor that continuously promotes the metabolic adaptation and flexibility of halophilic microbes for their survival at minimum nutritional requirements. A genetic adaptation to extreme solar radiation, ionic strength, and desiccation makes them promising candidates for drug discovery. More microbiota identified via sequencing and ‘omics’ approaches signify the hypersaline environments where compounds are produced. Microbial genera such as Bacillus, Actinobacteria, Halorubrum and Aspergillus are producing a substantial number of antimicrobial compounds. Several strategies were applied for producing novel antimicrobials from halophiles including a consortia approach. Promising results indicate that halophilic microbes can be utilised as prolific sources of bioactive metabolites with pharmaceutical potentialto expand natural product research towards diverse phylogenetic microbial groups which inhabit salterns. The present study reviews interesting antimicrobial compounds retrieved from microbial sources of various saltern environments, with a discussion of their potency in providing novel drugs against clinically drug-resistant microbes.
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Polysaccharide Stalks in Didymosphenia geminata Diatom: Real World Applications and Strategies to Combat Its Spread. POLYSACCHARIDES 2022. [DOI: 10.3390/polysaccharides3010004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Didymosphenia geminata is a species of freshwater diatom that is known as invasive and is propagating quickly around the world. While invasive species are generally considered a nuisance, this paper attempts to find useful applications for D. geminata in the biomedical field and wastewater remediation. Here, we highlight the polysaccharide-based stalks of D. geminata that enable versatile potential applications and uses as a biopolymer, in drug delivery and wound healing, and as biocompatible scaffolding in cell adhesion and proliferation. Furthermore, this review focuses on how the polysaccharide nature of stalks and their metal-adsorption capacity allows them to have excellent wastewater remediation potential. This work also aims to assess the economic impact of D. geminata, as an invasive species, on its immediate environment. Potential government measures and legislation are recommended to prevent the spread of D. geminata, emphasizing the importance of education and collaboration between stakeholders.
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Manochkumar J, Doss CGP, Efferth T, Ramamoorthy S. Tumor preventive properties of selected marine pigments against colon and breast cancer. ALGAL RES 2022. [DOI: 10.1016/j.algal.2021.102594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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22
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Marella TK, Bansal H, Bhattacharjya R, Parmar N, Chaurasia A, Watanabe MM, Bhatnagar A, Tiwari A. Deciphering functional biomolecule potential of marine diatoms through complex network approach. BIORESOURCE TECHNOLOGY 2021; 342:125927. [PMID: 34543817 DOI: 10.1016/j.biortech.2021.125927] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/06/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Marine diatoms are unique reservoirs of bioactive compounds having enormous applications in therapeutics. But high-throughput screening methods are needed to elucidate the interaction between numerous biomolecules and their targets, facilitating rapid screening for novel drug molecules. So, in the present study chemical constituents were extracted from five marine diatoms using un-targeted metabolite profiling and in-silico virtual screening bioinformatics was employed to predict their bioactivity and molecular targets. A total of 17 chemical constituents out of 51 showed interactions with 76 protein targets associated with 213 pathways. Ingredient-target-pathway network revealed oleic acid, linoleic acid and cholest-5-en-3-ol as major active constituents. Core subnetwork and protein association network showed involvement of these compounds in key metabolic pathways related to cell signaling, cell growth and metabolism of xenobiotics. Thus, the present study for the first time revealed the main active ingredients and their associated pathways from marine diatoms using complex network approach.
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Affiliation(s)
- Thomas Kiran Marella
- Algae Biomass and Energy System R&D Center (ABES), University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki, Japan
| | - Hina Bansal
- Amity Institute of Biotechnology, Amity University, Uttar Pradesh, India
| | - Raya Bhattacharjya
- Amity Institute of Biotechnology, Amity University, Uttar Pradesh, India
| | - Nitesh Parmar
- Amity Institute of Biotechnology, Amity University, Uttar Pradesh, India
| | - Ankur Chaurasia
- Amity Institute of Biotechnology, Amity University, Uttar Pradesh, India
| | - Makoto M Watanabe
- Algae Biomass and Energy System R&D Center (ABES), University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki, Japan
| | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, Mikkeli, Finland
| | - Archana Tiwari
- Amity Institute of Biotechnology, Amity University, Uttar Pradesh, India.
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Gunathilaka TL, Dilrangi KH, Ranasinghe P, Samarakoon KW, Peiris LDC. Mechanistic Insight into Apoptotic Induction in Human Rhabdomyosarcoma and Breast Adenocarcinoma Cells by Chnoospora minima: A Sri Lankan Brown Seaweed. Pharmaceuticals (Basel) 2021; 14:1154. [PMID: 34832937 PMCID: PMC8622854 DOI: 10.3390/ph14111154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 11/24/2022] Open
Abstract
The current study determined the cytotoxic and apoptotic potential of the polyphenol-rich methanol extract of Chnoospora minima (C. minima) and its fractions against human breast adenocarcinoma (MCF-7) and rhabdomyosarcoma (RMS) cells. MTT and neutral red assays were used to determine cytotoxicity. The clonogenic assay evaluated the antineoplastic activity, while the apoptotic activity was determined by cellular morphological changes, caspase 3/7 activity, and DNA fragmentation. Morphological alterations in apoptosis were observed by an inverted phase-contrast microscope and Hoechst 33342 staining methods. The total phenolic, flavonoids, alkaloids, and antioxidant activity in the hexane and chloroform fractions were determined, based on their cytotoxic activity. The hexane fraction of C. minima effectively reduced the cell growth that is concentration-dependent in human RMS and MCF-7 cell lines. It also exhibited low cytotoxicity on Vero cells. The characteristic cellular and nuclear apoptotic morphological features were observed. A noticeable caspase 3/7 activation and the fragmented DNA were detected only in the hexane fraction treated RMS cells, whereas MCF-7 cells showed low caspase 3/7 activation due to a lack of caspase 3 and no evidence of having a typical ladder pattern of apoptosis. Further analysis revealed that the hexane fraction-treated RMS cells upregulated the p53 gene twofold (2.72) compared to the p21 (0.77) gene, whereas in the MCF-7 cells, a 2.21-fold upregulation of p53 was observed compared to the p21 (0.64) gene. The hexane fraction exhibited moderate total phenolics, flavonoids, alkaloids content, and antioxidant activity. According to the different antioxidant mechanisms, hexane and chloroform fractions showed the highest antioxidant activities by FRAP and ORAC assays, respectively. GC-MS analysis of hexane fraction revealed the presence of methyl tetradecanoate (38.314%) as the most abundant compound. The study's findings highlighted that the non-polar compounds present in the hexane fraction of C. minima suppressed cell proliferation and induced apoptosis-mediated cell death in RMS and MCF-7 cells, mainly via the activation of the p53 gene. Hence, the isolation of compounds is warranted. However, more studies are required to understand the mechanistic insights of these observations.
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Affiliation(s)
- Thilina Lakmini Gunathilaka
- Department of Zoology, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka; (T.L.G.); (K.H.D.)
| | - Kulathungage Hiranthi Dilrangi
- Department of Zoology, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka; (T.L.G.); (K.H.D.)
| | | | - Kalpa W. Samarakoon
- Institute for Combinatorial Advanced Research and Education (KDU-CARE), General Sir John Kotelawala Defence University, Ratmalana 10390, Sri Lanka
| | - L. Dinithi C. Peiris
- Department of Zoology/Genetics & Molecular Biology Unit (Center for Biotechnology), Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka
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Novel drug delivery systems based on silver nanoparticles, hyaluronic acid, lipid nanoparticles and liposomes for cancer treatment. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-02018-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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25
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Marella TK, Bhattacharjya R, Tiwari A. Impact of organic carbon acquisition on growth and functional biomolecule production in diatoms. Microb Cell Fact 2021; 20:135. [PMID: 34266439 PMCID: PMC8281487 DOI: 10.1186/s12934-021-01627-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/03/2021] [Indexed: 02/01/2023] Open
Abstract
Diatoms are unicellular photosynthetic protists which constitute one of the most successful microalgae contributing enormously to global primary productivity and nutrient cycles in marine and freshwater habitats. Though they possess the ability to biosynthesize high value compounds like eicosatetraenoic acid (EPA), fucoxanthin (Fx) and chrysolaminarin (Chrl) the major bottle neck in commercialization is their inability to attain high density growth. However, their unique potential of acquiring diverse carbon sources via varied mechanisms enables them to adapt and grow under phototrophic, mixotrophic as well as heterotrophic modes. Growth on organic carbon substrates promotes higher biomass, lipid, and carbohydrate productivity, which further triggers the yield of various biomolecules. Since, the current mass culture practices primarily employ open pond and tubular photobioreactors for phototrophic growth, they become cost intensive and economically non-viable. Therefore, in this review we attempt to explore and compare the mechanisms involved in organic carbon acquisition in diatoms and its implications on mixotrophic and heterotrophic growth and biomolecule production and validate how these strategies could pave a way for future exploration and establishment of sustainable diatom biorefineries for novel biomolecules.
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Affiliation(s)
- Thomas Kiran Marella
- Algae Biomass and Energy System R&D Center (ABES), University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki, 305-8572, Japan
| | - Raya Bhattacharjya
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India
| | - Archana Tiwari
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India.
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Rabiee N, Khatami M, Jamalipour Soufi G, Fatahi Y, Iravani S, Varma RS. Diatoms with Invaluable Applications in Nanotechnology, Biotechnology, and Biomedicine: Recent Advances. ACS Biomater Sci Eng 2021; 7:3053-3068. [PMID: 34152742 DOI: 10.1021/acsbiomaterials.1c00475] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Diatoms are unicellular microalga found in soil and almost every aquatic environment (marine and fresh water). Biogenic silica and diatoms are attractive for biotechnological and industrial applications, especially in the field of biomedicine, industrial/synthetic manufacturing processes, and biomedical/pharmaceutical sciences. Deposition of silica by diatoms allows them to create micro- or nanoscale structures which may be utilized in nanomedicine and especially in drug/gene delivery. Diatoms with their unique architectures, good thermal stability, suitable surface area, simple chemical functionalization/modification procedures, ease of genetic manipulations, optical/photonic characteristics, mechanical resistance, and eco-friendliness, can be utilized as smart delivery platforms. The micro- to nanoscale properties of the diatom frustules have garnered a great deal of attention for their application in diverse areas of nanotechnology and biotechnology, such as bioimaging/biosensing, biosensors, drug/gene delivery, photodynamic therapy, microfluidics, biophotonics, solar cells, and molecular filtrations. Additionally, the genetically engineered diatom microalgae-derived nanoporous biosilica have enabled the targeted anticancer drug delivery to neuroblastoma and B-lymphoma cells as well as the mouse xenograft model of neuroblastoma. In this perspective, current trends and recent advances related to the applications of diatoms for the synthesis of nanoparticles, gene/drug delivery, biosensing determinations, biofuel production, and remediation of heavy metals are deliberated, including the underlying significant challenges and future perspectives.
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Affiliation(s)
- Navid Rabiee
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | - Mehrdad Khatami
- Noncommunicable Diseases Research Center, Bam University of Medical Sciences, Bam, Iran.,Cell Therapy and Regenerative Medicine Comprehensive Center, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Yousef Fatahi
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Siavash Iravani
- Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University in Olomouc, Slechtitelu 27, 783 71, Olomouc, Czech Republic
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27
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AlGhalban FM, Khan AA, Khattak MNK. Comparative anticancer activities of Ficus carica and Ficus salicifolia latex in MDA-MB-231 cells. Saudi J Biol Sci 2021; 28:3225-3234. [PMID: 34121859 PMCID: PMC8176001 DOI: 10.1016/j.sjbs.2021.02.061] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/07/2021] [Accepted: 02/16/2021] [Indexed: 12/01/2022] Open
Abstract
Ficus latex is rich in polyphenolic compounds and hence considered as an antioxidant and anti-proliferative. Many studies are available on Ficus carica (common fig) whereas Ficus salicifolia is less studied. F. salicifolia grows in a harsh dry environment, therefore its latex was selected in the current study along with the F. carica for their comparative anti-cancer potential and the involved molecular mechanism. Triple-negative breast cancer (TNBC) derived MDA-MB-231 cells were used in the study. MTT and morphological studies indicated that the latex of both plants has anti-proliferative effects. To know their anti-metastatic effects, a wound-healing assay was performed. Both species were able to maintain the wound size compared to the untreated cells indicating their anti-metastatic effects. Using a DNA damage assay kit, we found that both fig species have genotoxic and cytotoxic effects in MDA-MB-231 cells compared to the untreated control. To know the potential molecular mechanism involved, we used a human kinase array kit. We found that ERK2, CREB, and AKT2 were downregulated after treatment the MDA-Mb-231 cells with the latex of F. carica. We assumed that F. salicifolia will also affect the same pathways, however after confirmation through real-time (RT)-PCR, downregulations of the above mentioned pathways were confirmed in cells treated with F. carica latex, however, in cells treated with F. salicifolia the selected genes were upregulated at the transcriptional level. We conclude that latex of both species of ficus have anti-cancer effects in MDA-MB-231 cells, however differ in their level of toxicity and the mechanism of action at the molecular level.
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Affiliation(s)
- Fatma Mousa AlGhalban
- Department of Applied Biology, College of Sciences, University of Sharjah, United Arab Emirates
| | - Amir Ali Khan
- Department of Applied Biology, College of Sciences, University of Sharjah, United Arab Emirates
- Human Genetics and Stem Cells Research Group, Research Institute of Sciences & Engineering (RISE), University of Sharjah, Sharjah, United Arab Emirates
| | - Muhammad Nasir Khan Khattak
- Department of Applied Biology, College of Sciences, University of Sharjah, United Arab Emirates
- Human Genetics and Stem Cells Research Group, Research Institute of Sciences & Engineering (RISE), University of Sharjah, Sharjah, United Arab Emirates
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28
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Jiang Q, Chen Q, Zhang T, Liu M, Duan S, Sun X. The Antihypertensive Effects and Potential Molecular Mechanism of Microalgal Angiotensin I-Converting Enzyme Inhibitor-Like Peptides: A Mini Review. Int J Mol Sci 2021; 22:ijms22084068. [PMID: 33920763 PMCID: PMC8071128 DOI: 10.3390/ijms22084068] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/14/2021] [Accepted: 03/22/2021] [Indexed: 12/27/2022] Open
Abstract
Hypertension causes many deaths worldwide and has shown an increasing trend as a severe non-communicable disease. Conventional antihypertensive drugs inevitably cause side effects, and great efforts have been made to exploit healthier and more-available substitutes. Microalgae have shown great potential in this regard and have been applied in the food and pharmaceutical industries. Some compounds in microalgae have been proven to have antihypertensive effects. Among these natural compounds, peptides from microalgae are promising angiotensin-converting enzyme (ACE) inhibitors because an increasing number of peptides show hypertensive effects and ACE inhibitory-like activity. In addition to acting as ACE inhibitors for the treatment of hypertension, these peptides have other probiotic properties, such as antioxidant and anti-inflammatory properties, that are important for the prevention and treatment of hypertension. Numerous studies have revealed the important bioactivities of ACE inhibitors and their mechanisms. This review discusses the antihypertensive effects, structure-activity relationships, molecular docking studies, interaction mechanisms, and other probiotic properties of microalgal ACE inhibitory peptides according to the current research related to microalgae as potential antihypertensive drugs. Possible research directions are proposed. This review contributes to a more comprehensive understanding of microalgal antihypertensive peptides.
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Affiliation(s)
- Qichen Jiang
- Freshwater Fisheries Research Institute of Jiangsu Province, 79 Chating East Street, Nanjing 210017, China; (Q.J.); (T.Z.)
| | - Qi Chen
- Department of Ecology, Jinan University, Guangzhou 510632, China; (Q.C.); (S.D.)
- Guangdong Center for Marine Development Research, Guangzhou 510220, China
| | - Tongqing Zhang
- Freshwater Fisheries Research Institute of Jiangsu Province, 79 Chating East Street, Nanjing 210017, China; (Q.J.); (T.Z.)
| | - Meng Liu
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China;
| | - Shunshan Duan
- Department of Ecology, Jinan University, Guangzhou 510632, China; (Q.C.); (S.D.)
| | - Xian Sun
- Zhuhai Key Laboratory of Marine Bioresources and Environment, Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, Guangzhou 510275, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519080, China
- Correspondence: ; Tel.: +86-(75)-67626350
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29
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Shafiei N, Nasrollahzadeh M, Iravani S. Green Synthesis of Silica and Silicon Nanoparticles and Their Biomedical and Catalytic Applications. COMMENT INORG CHEM 2021. [DOI: 10.1080/02603594.2021.1904912] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nasrin Shafiei
- Department of Chemistry, Faculty of Science, University of Qom, Qom, Iran
| | | | - Siavash Iravani
- Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
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30
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Bioactivity of a Marine Diatom (Porosira glacialis [Grunow] Jörgensen 1905) Cultivated With and Without Factory Smoke CO2. Ind Biotechnol (New Rochelle N Y) 2021. [DOI: 10.1089/ind.2020.0031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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31
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Kizhakkekalam VK, Chakraborty K. Seaweed-associated heterotrophic bacteria: new paradigm of prospective anti-infective and anticancer agents. Arch Microbiol 2020; 203:1241-1250. [PMID: 33140140 DOI: 10.1007/s00203-020-02106-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/12/2020] [Accepted: 10/19/2020] [Indexed: 12/24/2022]
Abstract
Ever since the development of the first antibiotic compound with anticancer potential, researchers focused on isolation and characterization of prospective microbial natural products with potential anti-infective and anticancer activities. The present work describes the production of bioactive metabolites by heterotrophic bacteria associated with intertidal seaweeds with potential anti-infective and anticancer activities. The bacteria were isolated in a culture-dependent method and were identified as Shewanella algae MTCC 12715 (KX272635) and Bacillus amyloliquefaciens MTCC 12716 (KX272634) based on combined phenotypic and genotypic methods. Further, the bacteria were screened for their ability to inhibit drug-resistant infectious pathogens and prevent cell proliferation of human liver carcinoma (HepG2) and breast cancer (MCF7) cell lines, without affecting the normal cells. Significant anti-infective activity was observed with bacterial cells and their organic extracts against broad-spectrum multidrug-resistant pathogens, such as vancomycin-resistant Enterococcus faecalis, methicillin-resistant Staphylococcus aureus, Klebsiella pneumonia and Pseudomonas aeruginosa with minimum inhibitory concentration ≤ 3.0 µg mL-1 as compared to the antibiotic agents' chloramphenicol and ampicillin, which were active at ≥ 6.25 mg mL-1. The extracts also exhibited anticancer activity in a dose-responsive pattern against HepG2 (with IC50, half maximal inhibitory concentration ~ 78-83 µg mL-1) and MCF7 (IC50 ~ 45-48 µg mL-1) on tetrazolium bromide screening assay with lesser cytotoxic effects on normal fibroblast (L929) cell lines (IC50 > 100 µg mL-1). The results revealed that seaweed-associated heterotrophic bacteria could occupy a predominant role for a paradigm shift towards the development of prospective anti-infective and anticancer agents.
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Affiliation(s)
- Vinaya Kizhakkepatt Kizhakkekalam
- Marine Biotechnology Division, Central Marine Fisheries Research Institute, Ernakulam North, P.B. No. 1603, Cochin, India.,Faculty of Marine Sciences, Lakeside Campus, Cochin University of Science and Technology, Cochin, Kerala State, India
| | - Kajal Chakraborty
- Marine Biotechnology Division, Central Marine Fisheries Research Institute, Ernakulam North, P.B. No. 1603, Cochin, India.
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32
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Mondal A, Bose S, Banerjee S, Patra JK, Malik J, Mandal SK, Kilpatrick KL, Das G, Kerry RG, Fimognari C, Bishayee A. Marine Cyanobacteria and Microalgae Metabolites-A Rich Source of Potential Anticancer Drugs. Mar Drugs 2020; 18:E476. [PMID: 32961827 PMCID: PMC7551136 DOI: 10.3390/md18090476] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 09/09/2020] [Accepted: 09/16/2020] [Indexed: 02/07/2023] Open
Abstract
Cancer is at present one of the utmost deadly diseases worldwide. Past efforts in cancer research have focused on natural medicinal products. Over the past decades, a great deal of initiatives was invested towards isolating and identifying new marine metabolites via pharmaceutical companies, and research institutions in general. Secondary marine metabolites are looked at as a favorable source of potentially new pharmaceutically active compounds, having a vast structural diversity and diverse biological activities; therefore, this is an astonishing source of potentially new anticancer therapy. This review contains an extensive critical discussion on the potential of marine microbial compounds and marine microalgae metabolites as anticancer drugs, highlighting their chemical structure and exploring the underlying mechanisms of action. Current limitation, challenges, and future research pathways were also presented.
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Affiliation(s)
- Arijit Mondal
- Department of Pharmaceutical Chemistry, Bengal College of Pharmaceutical Technology, Dubrajpur 731 123, West Bengal, India
| | - Sankhadip Bose
- Department of Pharmacognosy, Bengal School of Technology, Chuchura 712 102, West Bengal, India;
| | - Sabyasachi Banerjee
- Department of Phytochemistry, Gupta College of Technological Sciences, Asansol 713 301, West Bengal, India;
| | - Jayanta Kumar Patra
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Goyang-si 10326, Korea; (J.K.P.); (G.D.)
| | - Jai Malik
- Centre of Advanced Study, University Institute of Pharmaceutical Sciences, Punjab University, Chandigarh 160 014, Punjab, India;
| | - Sudip Kumar Mandal
- Department of Pharmaceutical Chemistry, Dr. B.C. Roy College of Pharmacy and Allied Health Sciences, Durgapur 713 206, West Bengal, India;
| | | | - Gitishree Das
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Goyang-si 10326, Korea; (J.K.P.); (G.D.)
| | - Rout George Kerry
- Post Graduate Department of Biotechnology, Utkal University, Bhubaneswar 751 004, Odisha, India;
| | - Carmela Fimognari
- Department for Life Quality Studies, Alma Mater Studiorum-Università di Bologna, 47921 Rimini, Italy
| | - Anupam Bishayee
- Lake Erie College of Osteopathic Medicine, Bradenton, FL 34211, USA;
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