Hydrogels and Nanogels: Pioneering the Future of Advanced Drug Delivery Systems

Conventional drug delivery approaches, including tablets and capsules, often suffer from reduced therapeutic effectiveness, largely attributed to inadequate bioavailability and difficulties in ensuring patient adherence. These challenges have driven the development of advanced drug delivery systems...

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Main Authors: Ernesto J. Delgado-Pujol, Guillermo Martínez, David Casado-Jurado, Juan Vázquez, Jesús León-Barberena, David Rodríguez-Lucena, Yadir Torres, Ana Alcudia, Belén Begines
Format: Article
Language:English
Published: MDPI AG 2025-02-01
Series:Pharmaceutics
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Online Access:https://www.mdpi.com/1999-4923/17/2/215
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author Ernesto J. Delgado-Pujol
Guillermo Martínez
David Casado-Jurado
Juan Vázquez
Jesús León-Barberena
David Rodríguez-Lucena
Yadir Torres
Ana Alcudia
Belén Begines
author_facet Ernesto J. Delgado-Pujol
Guillermo Martínez
David Casado-Jurado
Juan Vázquez
Jesús León-Barberena
David Rodríguez-Lucena
Yadir Torres
Ana Alcudia
Belén Begines
author_sort Ernesto J. Delgado-Pujol
collection DOAJ
description Conventional drug delivery approaches, including tablets and capsules, often suffer from reduced therapeutic effectiveness, largely attributed to inadequate bioavailability and difficulties in ensuring patient adherence. These challenges have driven the development of advanced drug delivery systems (DDS), with hydrogels and especially nanogels emerging as promising materials to overcome these limitations. Hydrogels, with their biocompatibility, high water content, and stimuli-responsive properties, provide controlled and targeted drug release. This review explores the evolution, properties, and classifications of hydrogels versus nanogels and their applications in drug delivery, detailing synthesis methods, including chemical crosslinking, physical self-assembly, and advanced techniques such as microfluidics and 3D printing. It also examines drug-loading mechanisms (e.g., physical encapsulation and electrostatic interactions) and release strategies (e.g., diffusion, stimuli-responsive, and enzyme-triggered). These gels demonstrate significant advantages in addressing the limitations of traditional DDS, offering improved drug stability, sustained release, and high specificity. Their adaptability extends to various routes of administration, including topical, oral, and injectable forms, while emerging nanogels further enhance therapeutic targeting through nanoscale precision and stimuli responsiveness. Although hydrogels and nanogels have transformative potential in personalized medicine, challenges remain in scalable manufacturing, regulatory approval, and targeted delivery. Future strategies include integrating biosensors for real-time monitoring, developing dual-stimuli-responsive systems, and optimizing surface functionalization for specificity. These advancements aim to establish hydrogels and nanogels as cornerstones of next-generation therapeutic solutions, revolutionizing drug delivery, and paving the way for innovative, patient-centered treatments.
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spelling doaj-art-875ceebf7d71412bb58e471ebf61aa9f2025-08-20T02:01:24ZengMDPI AGPharmaceutics1999-49232025-02-0117221510.3390/pharmaceutics17020215Hydrogels and Nanogels: Pioneering the Future of Advanced Drug Delivery SystemsErnesto J. Delgado-Pujol0Guillermo Martínez1David Casado-Jurado2Juan Vázquez3Jesús León-Barberena4David Rodríguez-Lucena5Yadir Torres6Ana Alcudia7Belén Begines8Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, SpainDepartamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, SpainDepartamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, SpainDepartamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, SpainDepartamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, SpainDepartamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, SpainDepartamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Universidad de Sevilla, 41011 Sevilla, SpainDepartamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, SpainDepartamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, SpainConventional drug delivery approaches, including tablets and capsules, often suffer from reduced therapeutic effectiveness, largely attributed to inadequate bioavailability and difficulties in ensuring patient adherence. These challenges have driven the development of advanced drug delivery systems (DDS), with hydrogels and especially nanogels emerging as promising materials to overcome these limitations. Hydrogels, with their biocompatibility, high water content, and stimuli-responsive properties, provide controlled and targeted drug release. This review explores the evolution, properties, and classifications of hydrogels versus nanogels and their applications in drug delivery, detailing synthesis methods, including chemical crosslinking, physical self-assembly, and advanced techniques such as microfluidics and 3D printing. It also examines drug-loading mechanisms (e.g., physical encapsulation and electrostatic interactions) and release strategies (e.g., diffusion, stimuli-responsive, and enzyme-triggered). These gels demonstrate significant advantages in addressing the limitations of traditional DDS, offering improved drug stability, sustained release, and high specificity. Their adaptability extends to various routes of administration, including topical, oral, and injectable forms, while emerging nanogels further enhance therapeutic targeting through nanoscale precision and stimuli responsiveness. Although hydrogels and nanogels have transformative potential in personalized medicine, challenges remain in scalable manufacturing, regulatory approval, and targeted delivery. Future strategies include integrating biosensors for real-time monitoring, developing dual-stimuli-responsive systems, and optimizing surface functionalization for specificity. These advancements aim to establish hydrogels and nanogels as cornerstones of next-generation therapeutic solutions, revolutionizing drug delivery, and paving the way for innovative, patient-centered treatments.https://www.mdpi.com/1999-4923/17/2/215hydrogels for drug deliverynanogels in therapeuticsstimuli-responsive drug delivery systemspersonalized medicine with hydrogelsbiocompatible polymer networks
spellingShingle Ernesto J. Delgado-Pujol
Guillermo Martínez
David Casado-Jurado
Juan Vázquez
Jesús León-Barberena
David Rodríguez-Lucena
Yadir Torres
Ana Alcudia
Belén Begines
Hydrogels and Nanogels: Pioneering the Future of Advanced Drug Delivery Systems
Pharmaceutics
hydrogels for drug delivery
nanogels in therapeutics
stimuli-responsive drug delivery systems
personalized medicine with hydrogels
biocompatible polymer networks
title Hydrogels and Nanogels: Pioneering the Future of Advanced Drug Delivery Systems
title_full Hydrogels and Nanogels: Pioneering the Future of Advanced Drug Delivery Systems
title_fullStr Hydrogels and Nanogels: Pioneering the Future of Advanced Drug Delivery Systems
title_full_unstemmed Hydrogels and Nanogels: Pioneering the Future of Advanced Drug Delivery Systems
title_short Hydrogels and Nanogels: Pioneering the Future of Advanced Drug Delivery Systems
title_sort hydrogels and nanogels pioneering the future of advanced drug delivery systems
topic hydrogels for drug delivery
nanogels in therapeutics
stimuli-responsive drug delivery systems
personalized medicine with hydrogels
biocompatible polymer networks
url https://www.mdpi.com/1999-4923/17/2/215
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