Research progress of self-assembled nanogel and hybrid hydrogel systems based on pullulan derivatives

Tao Zhang, Ruyi Yang, Shengnan Yang, Jibin Guan, Dong Zhang, Yan Ma, Hongzhuo Liu

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


Polymer nano-sized hydrogels (nanogels) as drug delivery carriers have been investigated over the last few decades. Pullulan, a nontoxic and nonimmunogenic hydrophilic polysaccharide derived from fermentation of black yeast like Aureobasidium pullulans with great biocompatibility and biodegradability, is one of the most attractive carriers for drug delivery systems. In this review, we describe the preparation, characterization, and ‘switch-on/off’ mechanism of typical pullulan self-assembled nanogels (self-nanogels), and then introduce the development of hybrid hydrogels that are numerous resources applied for regenerative medicine. A major section is used for biomedical applications of different nanogel systems based on modified pullulan, which exert smart stimuli-responses at ambient conditions such as charge, pH, temperature, light, and redox. Pullulan self-nanogels have found increasingly extensive application in protein delivery, tissue engineering, vaccine development, cancer therapy, and biological imaging. Functional groups are incorporated into self-nanogels and contribute to expressing desirable results such as targeting and modified release. Various molecules, especially insoluble or unstable drugs and encapsulated proteins, present improved solubility and bioavailability as well as reduced side effects when incorporated into self-nanogels. Finally, the advantages and disadvantages of pullulan self-nanogels will be analyzed accordingly, and the development of pullulan nanogel systems will be reviewed.

Original languageEnglish (US)
Pages (from-to)278-292
Number of pages15
JournalDrug Delivery
Issue number1
StatePublished - Jan 15 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 The Author(s).


  • Carrier
  • Hybrid hydrogel
  • Pullulan
  • Research progress
  • Self-assembled nanogel


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