Publications by authors named "Rituparna Acharya"

COVID-19 is the pandemic outbreak that is caused by SARS-CoV-2 virus from December, 2019. Human race do not know the curative measure of this devastating disease. In today's era of nanotechnology, it may use its knowledge to develop molecular vaccine to combat this disease.

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The recent trend of gene therapy is using short hairpin RNA conjugated with different types of nanoparticles. shRNAs have a significant role in gene silencing and have a promising role in treating several genetic and infectious diseases. There are several drawbacks of delivering bare shRNA in the blood as they are fragile in nature and readily degradable.

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In the world, among the neurodegenerative diseases, Parkinson's is the second most common disease. Although several medications are available in the market, this disease still remains incurable and only the symptoms are controlled to a certain extent with severe side effects. For these reasons we decided to search for a novel therapeutic measure.

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Alzheimers, cancer, acquired immune deficiency syndrome (AIDS) are considered to be some of the most deadly diseases of the 21st century on account of their severity and rapid increase in the number of affected population and with scarce cases of recovery, they still remain a troubling paradox. Specifically, with millions of cancer patients worldwide and lack of proper cure for the same, understanding the deadly disease at the molecular level and planning a therapeutic strategy in the same line is the need of the hour. Further, the potential threat of prevalence and escalation of Alzheimer's and HIV (human immunodeficiency virus) infection by more than three times as of recent past, needs a medical breakthrough to arrive at a meaningful solution to tackle the present day scenario.

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Developing safe and effective nanocarriers for multitype of delivery system is advantageous for several kinds of successful biomedicinal therapy with the same carrier. In the present study, we have designed amino acid biomolecules derived hybrid block copolymers which can act as a promising vehicle for both drug delivery and gene transfer. Two representative natural chiral amino acid-containing (l-phenylalanine and l-alanine) vinyl monomers were polymerized via reversible addition-fragmentation chain transfer (RAFT) process in the presence of monomethoxy poly(ethylene glycol) based macro-chain transfer agents (mPEGn-CTA) for the synthesis of well-defined side-chain amino-acid-based amphiphilic block copolymers, monomethoxy poly(ethylene glycol)-b-poly(Boc-amino acid methacryloyloxyethyl ester) (mPEGn-b-P(Boc-AA-EMA)).

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A general and facile strategy was developed to prepare biocompatible peptide side-chain polymeric materials via reversible addition-fragmentation chain transfer (RAFT) polymerization. Three new dipeptide based monomers, Boc-Phe-Phe-oxyethyl methacrylate (Boc-FF-EMA), Boc-Ile-Phe-oxyethyl methacrylate (Boc-IF-EMA) and Boc-Val-Phe-oxyethyl methacrylate (Boc-VF-EMA), were synthesized and subsequently polymerized by RAFT process to afford well-defined peptide side-chain polymers, P(Boc-dipep-EMA), with controlled molecular weight, narrow polydispersity and precise chain end functionality. Further, a monomethoxy poly(ethylene glycol) (mPEG) based macro-chain transfer agent was employed for RAFT polymerization of these monomers to prepare well defined amphiphilic block copolymers, mPEG-b-P(Boc-dipep-EMA).

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