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Article

Endostar enhances the antitumor effects of radiation by affecting energy metabolism and alleviating the tumor microenvironment in a Lewis lung carcinoma mouse model

  • Authors:
    • Yong‑Fa Zheng
    • Wei Ge
    • Hui‑Lin Xu
    • De‑Dong Cao
    • Liang Liu
    • Ping‑Po Ming
    • Chang‑Hu Li
    • Xi‑Ming Xu
    • Wei‑Ping Tao
    • Ze‑Zhang Tao
  • View Affiliations / Copyright

    Affiliations: Department of Oncology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China, Department of Otolaryngology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
  • Pages: 3067-3072
    |
    Published online on: September 7, 2015
       https://doi.org/10.3892/ol.2015.3679
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Abstract

Lung cancer is a leading cause of morbidity and mortality. Previous studies have identified that an improvement in treatment efficacy was achieved using Endostar; however, the role of Endostar in lung cancer remains poorly understood. The present study investigated whether the enhanced antitumor effects of Endostar in combination with radiation involved changes in the metabolism and microenvironment in non‑small cell lung cancer. A Lewis lung carcinoma mouse model was used, including the control, Endostar (ES), radiotherapy (RT) and Endostar plus radiotherapy (ES + RT) groups. The tumor inhibition rates and growth were described based on changes in tumor volume. In addition, ultraviolet enzymatic analysis was performed to determine the lactate level and reverse transcription‑polymerase chain reaction was used to measure the mRNA expression of lactate dehydrogenase (LDH). A Meph‑3 pH meter was used to detect the ranges of tumor interstitial tissue pH, and immunohistochemical analysis was adopted to examine hypoxia within the tumor microenvironment. The tumor inhibition rate of the ES + RT group was significantly higher compared with the other three groups (P<0.05). Following treatment, the lactate levels decreased in all three treatment groups compared with the control, particularly in the ES + RT group (P<0.05). Reduced LDH expression and hypoxic fraction in the tumor microenvironment were also observed in the ES + RT group (P<0.05). Furthermore, changes from acidic to alkaline pH in the tumor microenvironment were detected in the ES + RT group. The present study suggested that Endostar is involved in the regulation of metabolism and tumor microenvironment hypoxia, which may be responsible for the enhanced antitumor effect of Endostar in combination with radiotherapy.
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Copy and paste a formatted citation
Spandidos Publications style
Zheng YF, Ge W, Xu HL, Cao DD, Liu L, Ming PP, Li CH, Xu XM, Tao WP, Tao ZZ, Tao ZZ, et al: Endostar enhances the antitumor effects of radiation by affecting energy metabolism and alleviating the tumor microenvironment in a Lewis lung carcinoma mouse model. Oncol Lett 10: 3067-3072, 2015.
APA
Zheng, Y., Ge, W., Xu, H., Cao, D., Liu, L., Ming, P. ... Tao, Z. (2015). Endostar enhances the antitumor effects of radiation by affecting energy metabolism and alleviating the tumor microenvironment in a Lewis lung carcinoma mouse model. Oncology Letters, 10, 3067-3072. https://doi.org/10.3892/ol.2015.3679
MLA
Zheng, Y., Ge, W., Xu, H., Cao, D., Liu, L., Ming, P., Li, C., Xu, X., Tao, W., Tao, Z."Endostar enhances the antitumor effects of radiation by affecting energy metabolism and alleviating the tumor microenvironment in a Lewis lung carcinoma mouse model". Oncology Letters 10.5 (2015): 3067-3072.
Chicago
Zheng, Y., Ge, W., Xu, H., Cao, D., Liu, L., Ming, P., Li, C., Xu, X., Tao, W., Tao, Z."Endostar enhances the antitumor effects of radiation by affecting energy metabolism and alleviating the tumor microenvironment in a Lewis lung carcinoma mouse model". Oncology Letters 10, no. 5 (2015): 3067-3072. https://doi.org/10.3892/ol.2015.3679
Copy and paste a formatted citation
x
Spandidos Publications style
Zheng YF, Ge W, Xu HL, Cao DD, Liu L, Ming PP, Li CH, Xu XM, Tao WP, Tao ZZ, Tao ZZ, et al: Endostar enhances the antitumor effects of radiation by affecting energy metabolism and alleviating the tumor microenvironment in a Lewis lung carcinoma mouse model. Oncol Lett 10: 3067-3072, 2015.
APA
Zheng, Y., Ge, W., Xu, H., Cao, D., Liu, L., Ming, P. ... Tao, Z. (2015). Endostar enhances the antitumor effects of radiation by affecting energy metabolism and alleviating the tumor microenvironment in a Lewis lung carcinoma mouse model. Oncology Letters, 10, 3067-3072. https://doi.org/10.3892/ol.2015.3679
MLA
Zheng, Y., Ge, W., Xu, H., Cao, D., Liu, L., Ming, P., Li, C., Xu, X., Tao, W., Tao, Z."Endostar enhances the antitumor effects of radiation by affecting energy metabolism and alleviating the tumor microenvironment in a Lewis lung carcinoma mouse model". Oncology Letters 10.5 (2015): 3067-3072.
Chicago
Zheng, Y., Ge, W., Xu, H., Cao, D., Liu, L., Ming, P., Li, C., Xu, X., Tao, W., Tao, Z."Endostar enhances the antitumor effects of radiation by affecting energy metabolism and alleviating the tumor microenvironment in a Lewis lung carcinoma mouse model". Oncology Letters 10, no. 5 (2015): 3067-3072. https://doi.org/10.3892/ol.2015.3679
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