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?:abstract
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Messenger RNA (mRNA)-based vaccines have shown promise against infectious diseases and several types of cancer in the last two decades Their promise can be attributed to their safety profiles, high potency, and ability to be rapidly and affordably manufactured Now, many RNA-based vaccines are being evaluated in clinical trials as prophylactic and therapeutic vaccines However, until recently, their development has been limited by their instability and inefficient in vivo transfection The nanodelivery system plays a dual function in RNA-based vaccination by acting as a carrier system and as an adjuvant That is due to its similarity to microorganisms structurally and size-wise;the nanodelivery system can augment the response by the immune system via simulating the natural infection process Nanodelivery systems allow non-invasive mucosal administration, targeted immune cell delivery, and controlled delivery, reducing the need for multiple administrations They also allow co-encapsulating with immunostimulators to improve the overall adjuvant capacity The aim of this review is to discuss the recent developments and applications of biodegradable nanodelivery systems that improve RNA-based vaccine delivery and enhance the immunological response against targeted diseases
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