Preparation of vapreotide-templated silver nanocages and their photothermal therapy efficacy

doi:10.1016/j.cjche.2018.01.026

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (7): 1586-1590.DOI: 10.1016/j.cjche.2018.01.026

• Materials and Product Engineering • Previous Articles Next Articles

Preparation of vapreotide-templated silver nanocages and their photothermal therapy efficacy

Ruiyan Zhu^1,2, Yanji Li¹, Kexin Bian¹, Zhengrong Gao³, Dawei Gao¹

1 Applied Chemistry Key Lab of Hebei Province, Department of Bioengineering, Yanshan University, Qinhuangdao 066004, China;
2 Hebei Province Asparagus Industry Technology Research Institute, Qinhuangdao 066004, China;
3 Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China

Received:2017-10-23 Revised:2017-12-26 Online:2018-08-16 Published:2018-07-28
Contact: Dawei Gao,E-mail address:dwgao@ysu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China (21476190) and Hebei Province Key Basic Research Fund (15961301D).

Preparation of vapreotide-templated silver nanocages and their photothermal therapy efficacy

Ruiyan Zhu^1,2, Yanji Li¹, Kexin Bian¹, Zhengrong Gao³, Dawei Gao¹

1 Applied Chemistry Key Lab of Hebei Province, Department of Bioengineering, Yanshan University, Qinhuangdao 066004, China;
2 Hebei Province Asparagus Industry Technology Research Institute, Qinhuangdao 066004, China;
3 Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China

通讯作者: Dawei Gao,E-mail address:dwgao@ysu.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (21476190) and Hebei Province Key Basic Research Fund (15961301D).

Abstract

Abstract: Vapreotide acetate (Vap) was used as a biotemplate to synthesize silver nanocages through direct co-incubation of a AgNO₃ solution, following by reduction using fresh NaBH₄. The characterized vapreotide-templated silver nanocages (Vap-AgNCs) presented a wide and red shifted absorption band with a maximum between 480 nm and 800 nm and possessed a uniform structure with a face-centered cubic crystal structure. The biocompatibility of Vap-AgNCs was assessed using the MTT method, indicating Vap-AgNCs had better biocompatibility when its concentration was lower than 2.5×10-4 mmol·L^-1. The photothermal characteristics of Vap-AgNCs were analyzed with laser irradiation (808 nm, 1.5 W·cm^-2) and the results showed that the temperature of the VapAgNCs solution reached 45℃ starting from 25℃ within 5 min. Additionally, Vap-AgNCs with a laser led to HeLa cell death. Therefore, the prepared Vap-AgNCs is expected to be an effective photothermal therapy agent.

Key words: Silver nanocages, Vapreotide acetate, Biotemplate, Photothermal therapy, Nanoparticles

摘要： Vapreotide acetate (Vap) was used as a biotemplate to synthesize silver nanocages through direct co-incubation of a AgNO₃ solution, following by reduction using fresh NaBH₄. The characterized vapreotide-templated silver nanocages (Vap-AgNCs) presented a wide and red shifted absorption band with a maximum between 480 nm and 800 nm and possessed a uniform structure with a face-centered cubic crystal structure. The biocompatibility of Vap-AgNCs was assessed using the MTT method, indicating Vap-AgNCs had better biocompatibility when its concentration was lower than 2.5×10-4 mmol·L^-1. The photothermal characteristics of Vap-AgNCs were analyzed with laser irradiation (808 nm, 1.5 W·cm^-2) and the results showed that the temperature of the VapAgNCs solution reached 45℃ starting from 25℃ within 5 min. Additionally, Vap-AgNCs with a laser led to HeLa cell death. Therefore, the prepared Vap-AgNCs is expected to be an effective photothermal therapy agent.

关键词: Silver nanocages, Vapreotide acetate, Biotemplate, Photothermal therapy, Nanoparticles

Ruiyan Zhu, Yanji Li, Kexin Bian, Zhengrong Gao, Dawei Gao. Preparation of vapreotide-templated silver nanocages and their photothermal therapy efficacy[J]. Chin.J.Chem.Eng., 2018, 26(7): 1586-1590.

Ruiyan Zhu, Yanji Li, Kexin Bian, Zhengrong Gao, Dawei Gao. Preparation of vapreotide-templated silver nanocages and their photothermal therapy efficacy[J]. Chinese Journal of Chemical Engineering, 2018, 26(7): 1586-1590.

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Preparation of vapreotide-templated silver nanocages and their photothermal therapy efficacy

Preparation of vapreotide-templated silver nanocages and their photothermal therapy efficacy

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