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The synergistic activation of Reactive Oxygen Species (ROS) mediated autophagy (natural process of removing damaged cells) by light triggered nanoliposomes can be a useful strategy for enhancing the anti-cancer potential of combinational therapies, says the study led by researchers from the Indian Institute of Technology (IIT), Hyderabad.The study involves Department of Biomedical Engineering, IIT, Hyderabad, Department of Biotechnology and Bioinformatics, University of Hyderabad, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay and Division of Molecular Medicine, Bose Institute, Kolkata.Done as part of the PhD work of the students, the study has been recently published in scientific journal Nanoscale"We have taken organic solvent mediator extract from plant Anthocephalus Cadamba and then tested this extract on various cell lines, both normal healthy cell lines and cancer cell lines. We found that this extract from this plant is very selective in killing cancer cells," Aravind Kumar Rengan from the Department of Biomedical Engineering at IIT Hyderabad, told .The researchers also found that this extract is highly hydrophobic. "We had to prepare a nano formulation out of it which will help in cells to uptake this extract easily. We prepared that, tested and found that this is very selective in killing cancer cells."The researchers did High Performance Liquid Chromatography (HPLC) and found few components, two of them not reported earlier.They had to then carry out a process to help release the extract from nano formulation. "For this we deployed photothermal effect in the sense we have added a dye to this nano formulation apart from the extract and this dye will respond to only near-infrared light. When we trigger this nano-formulation using this light, the dye inside nano-formulation absorbs this light, converts it into heat and that heat is going to destabilize the nano-formaulation which will in turn cause release of this extract."The team carried out some basic in-vitro analysis with cell lines in lab-level conditions. It then performed a pilot study in mouse model. "We need to have a thorough in-vitro as well as animal studies to go towards translations," he said.Stating that the team will carry on further analysis, he said they need to identify what all those particular contents in that extract which are causing selective cancer cell death. "Only then it will be easy to go for large-scale production of that particular extract."Rengan said a lot of clinical trials would be needed and this will take significant amount of time."There are many compounds which show very good results in in-vitro and animal studies but they fail in clinical trials. Unless and until we test and do stage-I clinical trials we are not very sure how effective it will be in human system. Only good thing we don't use harmful chemicals we use only plant extract which is very much compatible."( With inputs from IANS )

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