期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 22, 页码 19894-19901出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b05870
关键词
cell-penetrating peptide; persistent luminescence nanoparticles; cell tracking; macrophage homing; inflamed tissues
资金
- National Natural Science Foundation of China [21435001, 21804057]
- Postdoctoral Innovative Talent Support Program [BX20180130]
- China Postdoctoral Science Foundation [2018M630509]
- Natural Science Foundation of Jiangsu Province, China [BK20180584]
- National First-class Discipline Program of Food Science and Technology [JUFSTR20180301]
- Fundamental Research Funds for the Central Universities [JUSRP51714B]
Recruitment of leukocytes exhibiting arguable and ambiguous processes is involved in the inflammatory response, a specific reaction of organisms to tissue damage. Tracking leukocytes is of great importance for understanding the recruitment of leukocytes. Here, we report the fabrication of carboxyl silane and TAT cell-penetrating peptide-functionalized near-infrared-emitting persistent luminescence nano particles (PLNP-TAT) with deep tissue penetration in bioimaging for autofluorescence-free tracking of J774A.1 macrophages homing to inflamed tissues. The PLNP-TAT enables effective labeling of the J774A.1 macrophages and the tracking of the migration of cells to the simulated endothelial inflammatory microenvironment in vitro. Moreover, the PLNP-TAT also allows the tracking of J774A.1 macrophages homing to inflamed tissues in vivo under discontinuous illumination with a red light-emitting diode light. The PLNP-TAT allows in vivo tracking of leukocytes without the need for conventional continuous excitation and offers great potential in cell-tracking and diagnostic applications without the autofluorescence background and thermal damages brought about by continuous excitation.
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