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Saberi S, Modiri-Delshad T, Etemad-Moghadam S, Alaeddini M, Jamshidloo R, Ramazani A, Mohammadpour H, Hanna R, Khoobi M, Shahabi S. Efficacy of Synthesized Cubic Spirulina Platensis Photosensitizer in Anticancer Photodynamic Therapy: An in vitro study. Photodiagnosis Photodyn Ther 2023; 42:103511. [PMID: 36965756 DOI: 10.1016/j.pdpdt.2023.103511] [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: 01/14/2023] [Revised: 03/02/2023] [Accepted: 03/08/2023] [Indexed: 03/27/2023]
Abstract
Photodynamic therapy (PDT) is becoming increasingly popular in cancer management. Photosensitizers derived from natural sources can offer additional health benefits and play a crucial role in enhancing the efficacy of PDT in cancer treatment. We herein synthesized a cubic form of spirulina platensis (SP) and compared its anticancer-PDT efficacy with the naturally-occurring microhelical SP (MSP) and phycocyanin (Pc) against a tongue cancer cell-line and fibroblast cells. Cubic SP (CSP) was synthesized and characterized using standard analyses. CAL-27 and HGF cell-lines were incubated at different concentrations with each photosensitizer and were irradiated with 635 nm diode-laser. The viability, cellular-uptake, apoptosis and oxidative stress potential were quantitatively analyzed and statistically compared at P<0.05. Our results demonstrated that all three photosensitizers were non-toxic to normal cells before laser irradiation. In CAL-27, viability significantly decreased after PDT in all photosensitizer groups (P<0.05). Whereas, in HGF, Pc exhibited phototoxicity after laser irradiation (P=0.032). Cell-death was mainly apoptotic in Pc and CSP, but necrotic in MSP. Cellular-uptake was significantly higher in Pc, but was similar in MSP and CSP. Increase in reactive oxygen species was significantly higher in the Pc group compared to both SPs (P<0.05). We concluded that both SPs were safe and efficient photosensitizers for anticancer-PDT. CSP exhibited predominant and significant apoptotic death in CAL-27 and HGF cell-lines, while MSP mainly induced necrotic cell death. Despite the good photosensitizing performance of Pc, its use in higher concentrations should be considered with caution, due to the reduced viability that occurred following its use in PDT.
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Affiliation(s)
- Sogol Saberi
- Laser Research Center of Dentistry, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Tayebeh Modiri-Delshad
- Department of Chemistry, Faculty of Science, University of Zanjan, 45371-38791 Zanjan, Iran.
| | - Shahroo Etemad-Moghadam
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mojgan Alaeddini
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Rahele Jamshidloo
- Department of Management, Hidaj Branch, Islamic Azad University, Hidaj, Iran.
| | - Ali Ramazani
- Department of Chemistry, Faculty of Science, University of Zanjan, 45371-38791 Zanjan, Iran.
| | - Hadiseh Mohammadpour
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Reem Hanna
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Viale Benedetto XV, 6, 16132, Genoa, Italy; Department of Restorative Dental Sciences, UCL-Eastman Dental Institute, Faculty of Medical Sciences, Rockefeller Building, London, WC1E 6DE, UK; Department of Oral Surgery, King's College Hospital NHS Foundation Trust, Denmark Hill, London SE5 9RS, UK.
| | - Mehdi Khoobi
- Department of Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; Biomaterials Group, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran 1417614411, Iran.
| | - Sima Shahabi
- Laser Research Center of Dentistry, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
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Akhtar P, Biswas A, Balog-Vig F, Domonkos I, Kovács L, Lambrev PH. Trimeric photosystem I facilitates energy transfer from phycobilisomes in Synechocystis sp. PCC 6803. PLANT PHYSIOLOGY 2022; 189:827-838. [PMID: 35302607 PMCID: PMC9157137 DOI: 10.1093/plphys/kiac130] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 02/27/2022] [Indexed: 05/31/2023]
Abstract
In cyanobacteria, phycobilisomes (PBS) serve as peripheral light-harvesting complexes of the two photosystems, extending their antenna size and the wavelength range of photons available for photosynthesis. The abundance of PBS, the number of phycobiliproteins they contain, and their light-harvesting function are dynamically adjusted in response to the physiological conditions. PBS are also thought to be involved in state transitions that maintain the excitation balance between the two photosystems. Unlike its eukaryotic counterpart, PSI is trimeric in many cyanobacterial species and the physiological significance of this is not well understood. Here, we compared the composition and light-harvesting function of PBS in cells of Synechocystis sp. PCC 6803, which has primarily trimeric PSI, and the ΔpsaL mutant, which lacks the PsaL subunit of PSI and is unable to form trimers. We also investigated a mutant additionally lacking the PsaJ and PsaF subunits of PSI. Both strains with monomeric PSI accumulated significantly more allophycocyanin per chlorophyll, indicating higher abundance of PBS. On the other hand, a higher phycocyanin:allophycocyanin ratio in the wild type suggests larger PBS or the presence of APC-less PBS (CpcL-type) that are not assembled in cells with monomeric PSI. Steady-state and time-resolved fluorescence spectroscopy at room temperature and 77 K revealed that PSII receives more energy from the PBS at the expense of PSI in cells with monomeric PSI, regardless of the presence of PsaF. Taken together, these results show that the oligomeric state of PSI impacts the excitation energy flow in Synechocystis.
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Affiliation(s)
- Parveen Akhtar
- Szeged Biological Research Centre, Institute of Plant Biology, Temesvári krt. 62, Szeged 6726, Hungary
| | - Avratanu Biswas
- Szeged Biological Research Centre, Institute of Plant Biology, Temesvári krt. 62, Szeged 6726, Hungary
- Doctoral School of Biology, University of Szeged, Közép fasor 52, Szeged 6726, Hungary
| | - Fanny Balog-Vig
- Szeged Biological Research Centre, Institute of Plant Biology, Temesvári krt. 62, Szeged 6726, Hungary
| | - Ildikó Domonkos
- Szeged Biological Research Centre, Institute of Plant Biology, Temesvári krt. 62, Szeged 6726, Hungary
| | - László Kovács
- Szeged Biological Research Centre, Institute of Plant Biology, Temesvári krt. 62, Szeged 6726, Hungary
| | - Petar H Lambrev
- Szeged Biological Research Centre, Institute of Plant Biology, Temesvári krt. 62, Szeged 6726, Hungary
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Puzorjov A, Dunn KE, McCormick AJ. Production of thermostable phycocyanin in a mesophilic cyanobacterium. Metab Eng Commun 2021; 13:e00175. [PMID: 34168957 PMCID: PMC8209669 DOI: 10.1016/j.mec.2021.e00175] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/12/2021] [Accepted: 05/28/2021] [Indexed: 11/01/2022] Open
Abstract
Phycocyanin (PC) is a soluble phycobiliprotein found within the light-harvesting phycobilisome complex of cyanobacteria and red algae, and is considered a high-value product due to its brilliant blue colour and fluorescent properties. However, commercially available PC has a relatively low temperature stability. Thermophilic species produce more thermostable variants of PC, but are challenging and energetically expensive to cultivate. Here, we show that the PC operon from the thermophilic cyanobacterium Thermosynechococcus elongatus BP-1 (cpcBACD) is functional in the mesophile Synechocystis sp. PCC 6803. Expression of cpcBACD in an 'Olive' mutant strain of Synechocystis lacking endogenous PC resulted in high yields of thermostable PC (112 ± 1 mg g-1 DW) comparable to that of endogenous PC in wild-type cells. Heterologous PC also improved the growth of the Olive mutant, which was further supported by evidence of a functional interaction with the endogenous allophycocyanin core of the phycobilisome complex. The thermostability properties of the heterologous PC were comparable to those of PC from T. elongatus, and could be purified from the Olive mutant using a low-cost heat treatment method. Finally, we developed a scalable model to calculate the energetic benefits of producing PC from T. elongatus in Synechocystis cultures. Our model showed that the higher yields and lower cultivation temperatures of Synechocystis resulted in a 3.5-fold increase in energy efficiency compared to T. elongatus, indicating that producing thermostable PC in non-native hosts is a cost-effective strategy for scaling to commercial production.
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Affiliation(s)
- Anton Puzorjov
- SynthSys & Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3BF, UK
| | - Katherine E Dunn
- Institute for Bioengineering, School of Engineering, University of Edinburgh, Edinburgh, EH9 3DW, UK
| | - Alistair J McCormick
- SynthSys & Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3BF, UK
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Verdú I, González-Pleiter M, Leganés F, Rosal R, Fernández-Piñas F. Microplastics can act as vector of the biocide triclosan exerting damage to freshwater microalgae. CHEMOSPHERE 2021; 266:129193. [PMID: 33310522 DOI: 10.1016/j.chemosphere.2020.129193] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 06/12/2023]
Abstract
Despite the large number of recent studies on microplastics (MPs) and their ability to act as carriers of pollutants, the knowledge about the biological effects of MPs loaded with chemicals is scarce. The aim of this study was to evaluate the potential of MPs as vectors for the antimicrobial triclosan (TCS). For it, we tested low-density polyethylene (LDPE), polyamide (PA), polyethylene terephthalate (PET), polyoxymethylene (POM), polypropylene (PP), polystyrene (PS) and the biodegradable polylactic acid (PLA). Thus, chemical analysis of sorption and desorption of TCS by these MPs was evaluated. The effect of TCS-loaded MPs to Anabaena sp. PCC7120, a cyanobacterium model of primary producers in freshwater ecosystems, was investigated. Chemical analyses showed different capacity of sorption depending on the MP type, which was related to some of their physicochemical properties. PA (104.7 μg/g), POM (57.4 μg/g) and LDPE (18.3 μg/g) were the polymers that sorbed the highest amounts of TCS. Glass transition temperature of polymers and their physicochemical interaction with TCS explained the extent of sorption. Significant decreases were found in growth, 22.3%, 94.6% and 81.0%, and chlorophyll a content, 58.4%, 95.0% and 89.6%, of Anabaena when exposed to TCS-loaded LDPE, PA and POM beads, respectively, which were the only MPs displaying significant sorption-desorption of TCS, implying that these MPs could act as vectors of TCS towards freshwater microalgae. This finding is of fundamental relevance as microalgae are at the base of the aquatic trophic chain and support growth of upper organisms.
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Affiliation(s)
- Irene Verdú
- Department of Biology, Faculty of Science, Universidad Autónoma de Madrid, E-28049, Madrid, Spain
| | - Miguel González-Pleiter
- Department of Chemical Engineering, Universidad de Alcalá, E-28871, Alcalá de Henares, Madrid, Spain
| | - Francisco Leganés
- Department of Biology, Faculty of Science, Universidad Autónoma de Madrid, E-28049, Madrid, Spain
| | - Roberto Rosal
- Department of Chemical Engineering, Universidad de Alcalá, E-28871, Alcalá de Henares, Madrid, Spain
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Hurtado-Gallego J, Pulido-Reyes G, González-Pleiter M, Salas G, Leganés F, Rosal R, Fernández-Piñas F. Toxicity of superparamagnetic iron oxide nanoparticles to the microalga Chlamydomonas reinhardtii. CHEMOSPHERE 2020; 238:124562. [PMID: 31442774 DOI: 10.1016/j.chemosphere.2019.124562] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/22/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
Superparamagnetic iron oxide nanoparticles (SPION) have been widely studied for different biomedical and environmental applications. In this study we evaluated the toxicity and potential alterations of relevant physiological parameters caused to the microalga Chlamydomonas reinhardtii (C. reinhardtii) upon exposure to SPION. The results showed dose-dependent toxicity. A mechanistic study combining flow cytometry and physiological endpoints showed a toxic response consisting of a decrease in metabolic activity, increased oxidative stress and alterations in the mitochondrial membrane potential. Additionally, and due to the light absorption of SPION suspensions, we observed a significant shading effect, causing a marked decrease in photosynthetic activity. In this work, we demonstrated for the first time, the internalization of SPION by endocytosis in C. reinhardtii. These results demonstrated that SPION pose a potential risk for the environment if not managed properly.
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Affiliation(s)
- Jara Hurtado-Gallego
- Departamento de Biología, Facultad de ciencias, Universidad Autónoma de Madrid, 28029 Madrid, Spain
| | - Gerardo Pulido-Reyes
- Departamento de Biología, Facultad de ciencias, Universidad Autónoma de Madrid, 28029 Madrid, Spain
| | - Miguel González-Pleiter
- Departamento de Biología, Facultad de ciencias, Universidad Autónoma de Madrid, 28029 Madrid, Spain
| | - Gorka Salas
- IMDEA Nanociencia, C/Faraday 9, Cantoblanco, 28049 Madrid, Spain
| | - Francisco Leganés
- Departamento de Biología, Facultad de ciencias, Universidad Autónoma de Madrid, 28029 Madrid, Spain
| | - Roberto Rosal
- Departamento de Ingeniería Química, Universidad de Alcalá, 28871, Alcalá de Henares, Madrid, Spain
| | - Francisca Fernández-Piñas
- Departamento de Biología, Facultad de ciencias, Universidad Autónoma de Madrid, 28029 Madrid, Spain.
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Jiang L, Wang Y, Yin Q, Liu G, Liu H, Huang Y, Li B. Phycocyanin: A Potential Drug for Cancer Treatment. J Cancer 2017; 8:3416-3429. [PMID: 29151925 PMCID: PMC5687155 DOI: 10.7150/jca.21058] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 08/30/2017] [Indexed: 12/19/2022] Open
Abstract
Phycocyanin isolated from marine organisms has the characteristics of high efficiency and low toxicity, and it can be used as a functional food. It has been reported that phycocyanin has anti-oxidative function, anti-inflammatory activity, anti-cancer function, immune enhancement function, liver and kidney protection pharmacological effects. Thus, phycocyanin has an important development and utilization as a potential drug, and phycocyanin has become a new hot spot in the field of drug research. So far, there are more and more studies have shown that phycocyanin has the anti-cancer effect, which can block the proliferation of cancer cells and kill cancer cells. Phycocyanin exerts anti-cancer activity by blocking tumor cell cell cycle, inducing tumor cell apoptosis and autophagy, thereby phycocyanin can serve as a promising anti-cancer agent. This review discusses the therapeutic use of phycocyanin and focuses on the latest advances of phycocyanin as a promising anti-cancer drug.
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Affiliation(s)
- Liangqian Jiang
- Department of Genetics and Cell Biology, Basic medical college, 308 Ningxia Road, Qingdao University, Qingdao, China, 266071
| | - Yujuan Wang
- Department of Genetics and Cell Biology, Basic medical college, 308 Ningxia Road, Qingdao University, Qingdao, China, 266071
| | - Qifeng Yin
- Department of Genetics and Cell Biology, Basic medical college, 308 Ningxia Road, Qingdao University, Qingdao, China, 266071
| | - Guoxiang Liu
- Department of Genetics and Cell Biology, Basic medical college, 308 Ningxia Road, Qingdao University, Qingdao, China, 266071
| | - Huihui Liu
- Department of Genetics and Cell Biology, Basic medical college, 308 Ningxia Road, Qingdao University, Qingdao, China, 266071
| | - Yajing Huang
- Basic medical college, 308 Ningxia Road, Qingdao University, Qingdao, China, 266071
| | - Bing Li
- Department of Genetics and Cell Biology, Basic medical college, 308 Ningxia Road, Qingdao University, Qingdao, China, 266071
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González-Pleiter M, Rioboo C, Reguera M, Abreu I, Leganés F, Cid Á, Fernández-Piñas F. Calcium mediates the cellular response of Chlamydomonas reinhardtii to the emerging aquatic pollutant Triclosan. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 186:50-66. [PMID: 28249228 DOI: 10.1016/j.aquatox.2017.02.021] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/17/2017] [Accepted: 02/19/2017] [Indexed: 06/06/2023]
Abstract
The present study was aimed at investigating the role of intracellular free calcium, [Ca2+]c, in the early cellular response of the green alga Chlamydomonas reinhardtii to the emergent pollutant Triclosan (13.8μM; 24h of exposure). There is a growing concern about the persistence and toxicity of this antimicrobial in aquatic environments, where non-target organisms such as C. reinhardtii, a primary producer of ecological relevance, might be severely impacted. A mechanistic study was undertaken which combined flow cytometry protocols, physiological as well as gene expression analysis. As an early response, Triclosan strongly altered [Ca2+]c homeostasis which could be prevented by prechelation with the intracellular calcium chelator BAPTA-AM. Triclosan induced ROS overproduction which ultimately leads to oxidative stress with loss of membrane integrity, membrane depolarization, photosynthesis inhibition and mitochondrial membrane depolarization; within this context, Triclosan also induced an increase in caspase 3/7 activity and altered the expression of metacaspase genes which are indicative of apoptosis. All these adverse outcomes were dependent on [Ca2+]c. Interestingly, an interconnection between [Ca2+]c alterations and increased ROS formation by Triclosan was found. Taken altogether these results shed light on the mechanisms behind Triclosan toxicity in the green alga Chlamydomonas reinhardtii and demonstrate the role of [Ca2+]c in mediating the observed toxicity.
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Affiliation(s)
- Miguel González-Pleiter
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Carmen Rioboo
- Laboratorio de Microbiología, Facultad de Ciencias, Universidad da Coruña, Campus de A Zapateira s/n, 15008 A Coruña, Spain
| | - María Reguera
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Isidro Abreu
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Francisco Leganés
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Ángeles Cid
- Laboratorio de Microbiología, Facultad de Ciencias, Universidad da Coruña, Campus de A Zapateira s/n, 15008 A Coruña, Spain
| | - Francisca Fernández-Piñas
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
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