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Article Publish Status: FREE
Abstract Title:

Metabolic changes and anti-tumor effects of a ketogenic diet combined with anti-angiogenic therapy in a glioblastoma mouse model.

Abstract Source:

Sci Rep. 2021 Jan 8 ;11(1):79. Epub 2021 Jan 8. PMID: 33420169

Abstract Author(s):

Masahiro Maeyama, Kazuhiro Tanaka, Masamitsu Nishihara, Yasuhiro Irino, Masakazu Shinohara, Hiroaki Nagashima, Hirotomo Tanaka, Satoshi Nakamizo, Mitsuru Hashiguchi, Yuichi Fujita, Masaaki Kohta, Eiji Kohmura, Takashi Sasayama

Article Affiliation:

Masahiro Maeyama

Abstract:

The ketogenic diet (KD) is a high fat and low carbohydrate diet that produces ketone bodies through imitation of starvation. The combination of KD and Bevacizumab (Bev), a VEGF inhibitor, is considered to further reduce the supply of glucose to the tumor. The metabolite changes in U87 glioblastoma mouse models treated with KD and/or Bev were examined using gas chromatography-mass spectrometry. The combination therapy of KD and Bev showed a decrease in the rate of tumor growth and an increase in the survival time of mice, although KD alone did not have survival benefit. In the metabolome analysis, the pattern of changes for most amino acids are similar between tumor and brain tissues, however, some amino acids such as aspartic acid and glutamic acid were different between tumors and brain tissues. The KD enhanced the anti-tumor efficacy of Bev in a glioblastoma intracranial implantation mouse model, based on lowest levels of microvascular density (CD31) and cellular proliferation markers (Ki-67 and CCND1) in KD + Bev tumors compared to the other groups. These results suggested that KD combined with Bev may be a useful treatment strategy for patients with GBM.

Study Type : Animal Study

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Sayer Ji
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