1. Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan 430074, China; 2. MoE Key Laboratory for Biomedical Photonics, Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. *These authors contributed equally to this work.
✉ Corresponding authors: Zhihong Zhang, czyzzhhust.edu.cn; Qingming Luo, qluohust.edu.cn. Address: Room G304, Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, Wuhan 430074, China. Fax: +86-27-87792034; Tel: +86-27-87792033; Zhihong Zhang (czyzzhhust.edu.cn) is the corresponding author for communication with the Editorial and Production offices.More
Citation:
Yang F, Liu S, Liu X, Liu L, Luo M, Qi S, Xu G, Qiao S, Lv X, Li X, Fu L, Luo Q, Zhang Z. In Vivo Visualization of Tumor Antigen-containing Microparticles Generated in Fluorescent-protein-elicited Immunity. Theranostics 2016; 6(9):1453-1466. doi:10.7150/thno.14145. https://www.thno.org/v06p1453.htm
In vivo optical spatio-temporal imaging of the tumor microenvironment is useful to explain how tumor immunotherapies work. However, the lack of fluorescent antigens with strong immunogenicity makes it difficult to study the dynamics of how tumors are eliminated by any given immune response. Here, we develop an effective fluorescent model antigen based on the tetrameric far-red fluorescent protein KatushkaS158A (tfRFP), which elicits both humoral and cellular immunity. We use this fluorescent antigen to visualize the dynamic behavior of immunocytes as they attack and selectively eliminate tfRFP-expressing tumors in vivo; swarms of immunocytes rush toward tumors with high motility, clusters of immunocytes form quickly, and numerous antigen-antibody complexes in the form of tfRFP+ microparticles are generated in the tumor areas and ingested by macrophages in the tumor microenvironment. Therefore, tfRFP, as both a model antigen and fluorescent reporter, is a useful tool to visualize specific immune responses in vivo.
Yang, F., Liu, S., Liu, X., Liu, L., Luo, M., Qi, S., Xu, G., Qiao, S., Lv, X., Li, X., Fu, L., Luo, Q., Zhang, Z. (2016). In Vivo Visualization of Tumor Antigen-containing Microparticles Generated in Fluorescent-protein-elicited Immunity. Theranostics, 6(9), 1453-1466. https://doi.org/10.7150/thno.14145.
ACS
Yang, F.; Liu, S.; Liu, X.; Liu, L.; Luo, M.; Qi, S.; Xu, G.; Qiao, S.; Lv, X.; Li, X.; Fu, L.; Luo, Q.; Zhang, Z. In Vivo Visualization of Tumor Antigen-containing Microparticles Generated in Fluorescent-protein-elicited Immunity. Theranostics 2016, 6 (9), 1453-1466. DOI: 10.7150/thno.14145.
NLM
Yang F, Liu S, Liu X, Liu L, Luo M, Qi S, Xu G, Qiao S, Lv X, Li X, Fu L, Luo Q, Zhang Z. In Vivo Visualization of Tumor Antigen-containing Microparticles Generated in Fluorescent-protein-elicited Immunity. Theranostics 2016; 6(9):1453-1466. doi:10.7150/thno.14145. https://www.thno.org/v06p1453.htm
CSE
Yang F, Liu S, Liu X, Liu L, Luo M, Qi S, Xu G, Qiao S, Lv X, Li X, Fu L, Luo Q, Zhang Z. 2016. In Vivo Visualization of Tumor Antigen-containing Microparticles Generated in Fluorescent-protein-elicited Immunity. Theranostics. 6(9):1453-1466.