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Huang C, Tang X, Li S, Wang Q, Xie B, Xu J, Lin Y. Immunopotentiator Aikejia improves the therapeutic efficacy of PD-1/PD-L1 immunosuppressive pathway in CT26.WT cancer cell. J Cancer 2019; 10:3472-3480. [PMID: 31293651 PMCID: PMC6603415 DOI: 10.7150/jca.29672] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 05/15/2019] [Indexed: 12/26/2022] Open
Abstract
Tumors can escape immunosurveillance through immunocheckpoint such as the PD-1/PD-L1 pathway. Aikejia comes from Nocardia rubra cell-wall skeleton and can increase the number of inflammatory factors and immune cells. In this work, we showed that the levels of PD-L1 increase in CT26.WT xenograft after subcutaneous injection of Aikejia in mice, but Aikejia did not induce the expression of PD-L1 in vitro. When we treated the mice with Aikejia and blocked PD-1/PD-L1 pathway in vivo at the same time, the CT26.WT xenografts were significantly inhibited or eliminated, which was better than single treatment alone. Our results suggested that Aikejia may be an effective adjuvant for PD-1/PD-L1 immunotherapy.
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Affiliation(s)
- Chaoqun Huang
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou 350117, Fujian Province, People's Republic of China.,Central laboratory, The Fifth Hospital of Xiamen, Xiamen 361101, Fujian Province, People's Republic of China
| | - Xiaoqiong Tang
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou 350117, Fujian Province, People's Republic of China
| | - Suhuan Li
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou 350117, Fujian Province, People's Republic of China
| | - Qingshui Wang
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou 350117, Fujian Province, People's Republic of China
| | - Bifeng Xie
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou 350117, Fujian Province, People's Republic of China
| | - Jing Xu
- Shanhe Pharmaceutical Co., Ltd., No789, Hangang West Road, Chigang Overseas Chinese Economic Development Zone, Putian 351100, Fujian Province, People's Republic of China
| | - Yao Lin
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, College of Life Sciences, Fujian Normal University, Fuzhou 350117, Fujian Province, People's Republic of China
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