Biodegradable Inorganic Upconversion Nanocrystals for In Vivo Applications
Peng, Pengfei1,2; Wu, Na3,4; Ye, Lixiang5; Jiang, Feilong1; Feng, Wei3,4; Li, Fuyou3,4; Liu, Yongsheng1,6; Hong, Maochun1,6
Source PublicationACS NANO

Lanthanide-doped inorganic upconversion nanocrystals (UCNCs) are promising as fluorescent diagnostic and therapeutic agents for in vivo applications ranging from biological imaging to disease theranostics. However, all currently available lanthanide-doped inorganic UCNCs are not biodegradable and thus cannot be harmlessly eliminated from the body of living organism during a reasonable period of time, making their clinical translations nearly impossible. Here, we report a class of red-emitting biodegradable UCNCs based on Yb3+/Er3+-doped inorganic potassium heptafluozirconate (K3ZrF7:Yb/Er) that features a dynamically “soft” crystal lattice containing water-soluble [ZrF7]3− cluster and a K+ cation. The red-emitting K3ZrF7:Yb/Er UCNCs exhibit a pH-dependent biodegradation capability upon exposure to water both in vitro and in vivo, and the rapid biodegradation rate, monitored using the intrinsic red upconversion luminescence, can be tuned particularly in a mild acidic tumor microenvironment (pH ∼5−6). More importantly, the final biodegradation products of K3ZrF7:Yb/Er UCNCs can be excreted from the body of mice in a short period of time with no evidence of toxicity, in stark contrast to the nondegradable β-NaYF4:Yb/Er UCNCs that primarily accumulate in the main organs of mice. These findings described here unambiguously would benefit the future biomedical applications and clinical translations of lanthanide-doped inorganic UCNCs.

Keywordupconversion lanthanide ion biodegradable luminescent nanocrystals inorganic fluorides
Indexed BySCI
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences (CAS)[XDB20000000] ; National Natural Science Foundation of China[21871256][21731006] ; Key Research Program of Frontier Science CAS[QYZDY-SSW-SLH025] ; Youth Innovation Promotion Association of CAS[Y201747]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000603308800031
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Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLiu, Yongsheng; Hong, Maochun
Affiliation1.Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China
2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
3.Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
4.Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China
5.Fujian Med Univ, Fujian Ctr Safety Evaluat New Drug, Fuzhou 350122, Fujian, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Peng, Pengfei,Wu, Na,Ye, Lixiang,et al. Biodegradable Inorganic Upconversion Nanocrystals for In Vivo Applications[J]. ACS NANO,2020,14(12):16672-16680.
APA Peng, Pengfei.,Wu, Na.,Ye, Lixiang.,Jiang, Feilong.,Feng, Wei.,...&Hong, Maochun.(2020).Biodegradable Inorganic Upconversion Nanocrystals for In Vivo Applications.ACS NANO,14(12),16672-16680.
MLA Peng, Pengfei,et al."Biodegradable Inorganic Upconversion Nanocrystals for In Vivo Applications".ACS NANO 14.12(2020):16672-16680.
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