Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (10): 20260133.doi: 10.7503/cjcu20260133

• Articles: Inorganic Chemistry • Previous Articles     Next Articles

One-pot Preparation of Hesperetin-loaded ZIF-8 for Tumor Acidic Microenvironment-responsive Drug Release

ZHAO Yang1, ZHU Zhen2, YANG Liuqing3, CAO Zhanhua1, ZHONG Bingwen1, ZHUANG Yuan1, LIU Zhihui1()   

  1. 1.Hospital of Stomatology,Jilin University,Changchun 130021,China
    2.Zhenjiang Stomatological Hospital,Zhenjiang 212000
    3.Affiliated Stomatological Hospital of Fujian Medical University,Fuzhou 350025
  • Received:2026-03-30 Online:2026-10-10 Published:2026-05-06
  • Contact: LIU Zhihui E-mail:liu_zh@jlu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(82370934);the Zhenjiang Municipal Science and Technology Program, China(SH2024073)

Abstract:

Hesperetin(HES) was incorporated into the zeolitic imidazolate framework-8(ZIF-8) via a one-pot method to construct HES@ZIF-8 nanocomposites. The morphology, crystal structure, pore structure, and thermal stability were systematically characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, nitrogen adsorption-desorption, and thermogravimetric analysis. Furthermore, the drug-loading capacity and in vitro release behavior under different pH values were evaluated. The results demonstrate the construction of HES@ZIF-8, which retained the regular polyhedral morphology and characteristic crystal framework of ZIF-8 after HES loading, indicating that the introduction of HES did not disrupt the host framework structure. Changes in pore structure parameters and thermal mass loss behavior further confirmed the effective integration of HES into the ZIF-8 system, achieving a drug-loading capacity of 72.0%. In vitro drug release studies revealed that HES@ZIF-8 exhibited a pronounced pH value-dependent release profile, with cumulative release rates of 42.9%, 72.6%, and 92.9% at pH value of 7.4, 6.5, and 5.5, respectively. The significant dissociation of the particle framework under acidic conditions indicates that the accelerated release is closely related to the acid- induced structural disruption of ZIF-8. In vitro cellular experiments showed that HES@ZIF-8 possessed good biocompatibility with normal fibroblasts(L929) within a working concentration range of 0—40 μg/mL. Concurrently, the material decreased the viability of oral squamous cell carcinoma(OSCC, CAL-27) and salivary adenoid cystic carcinoma(SACC), inhibited cell migration, and promoted apoptosis, with a more pronounced effect observed in SACC cells. These in vitro findings preliminarily suggest that HES@ZIF-8 features structure-retaining loading and tumor microacidic environment-responsive release, providing an experimental basis for further research on natural small molecule/metal-organic framework composite drug delivery systems.

Key words: Hesperetin, ZIF-8, Metal-organic frameworks, Nanocomposite, Acid-responsive release

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