Volume 151, Issue 4 pp. 623-636
MOLECULAR CANCER BIOLOGY

High-fat diet promotes prostate cancer growth through histamine signaling

Makoto Matsushita

Makoto Matsushita

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Kazutoshi Fujita

Corresponding Author

Kazutoshi Fujita

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

Department of Urology, Kindai University, Faculty of Medicine, Osakasayama, Japan

Correspondence

Kazutoshi Fujita, Department of Urology, Kindai University Faculty of Medicine, 377-2 Oono-higashi, Osakasayama, Osaka 589-8511 Japan.

Email: [email protected]

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Koji Hatano

Koji Hatano

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Takuji Hayashi

Takuji Hayashi

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Hisako Kayama

Hisako Kayama

Laboratory of Immune Regulation, Department of Microbiology and Immunology, Osaka University, Graduate School of Medicine, Suita, Japan

WPI Immunology Frontier Research Center, Osaka University, Suita, Japan

Institute for Advanced Co-Creation Studies, Osaka University, Suita, Japan

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Daisuke Motooka

Daisuke Motooka

Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Japan

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Hiroaki Hase

Hiroaki Hase

Laboratory of Cell Biology and Physiology, Osaka University, Graduate School of Pharmaceutical Sciences, Suita, Japan

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Akinaru Yamamoto

Akinaru Yamamoto

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Toshihiko Uemura

Toshihiko Uemura

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Gaku Yamamichi

Gaku Yamamichi

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Eisuke Tomiyama

Eisuke Tomiyama

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Yoko Koh

Yoko Koh

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Taigo Kato

Taigo Kato

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Atsunari Kawashima

Atsunari Kawashima

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Motohide Uemura

Motohide Uemura

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Satoshi Nojima

Satoshi Nojima

Department of Pathology, Osaka University, Graduate School of Medicine, Suita, Japan

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Ryoichi Imamura

Ryoichi Imamura

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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Aysha Mubeen

Aysha Mubeen

Department of Pathology, UAB School of Medicine, Birmingham, Alabama, USA

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George J. Netto

George J. Netto

Department of Pathology, UAB School of Medicine, Birmingham, Alabama, USA

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Kazutake Tsujikawa

Kazutake Tsujikawa

Laboratory of Cell Biology and Physiology, Osaka University, Graduate School of Pharmaceutical Sciences, Suita, Japan

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Shota Nakamura

Shota Nakamura

Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Japan

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Kiyoshi Takeda

Kiyoshi Takeda

Laboratory of Immune Regulation, Department of Microbiology and Immunology, Osaka University, Graduate School of Medicine, Suita, Japan

WPI Immunology Frontier Research Center, Osaka University, Suita, Japan

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Eiichi Morii

Eiichi Morii

Department of Pathology, Osaka University, Graduate School of Medicine, Suita, Japan

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Norio Nonomura

Norio Nonomura

Department of Urology, Osaka University, Graduate School of Medicine, Suita, Japan

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First published: 11 April 2022
Citations: 10

Funding information: Japan Society for the Promotion of Science, Grant/Award Number: JP21K09421; Japanese Urological Association; Yakult Bio-Science Foundation

Abstract

Western high-fat diets (HFD) are regarded as a major risk factor for prostate cancer (PCa). Using prostate-specific Pten-knockout mice as a PCa model, we previously reported that HFD promoted inflammatory PCa growth. The composition of the gut microbiota changes under the influence of diet exert various effects on the host through immunological mechanisms. Herein, we investigated the etiology of HFD-induced inflammatory cancer growth and the involvement of the gut microbiome. The expression of Hdc, the gene responsible for histamine biosynthesis, and histamine levels were upregulated in large prostate tumors of HFD-fed mice, and the number of mast cells increased around the tumor foci. Administration of fexofenadine, a histamine H1 receptor antagonist, suppressed tumor growth in HFD-fed mice by reducing the number of myeloid-derived suppressor cells and suppressing IL6/STAT3 signaling. HFD intake induced gut dysbiosis, resulting in the elevation of serum lipopolysaccharide (LPS) levels. Intraperitoneal injection of LPS increased Hdc expression in PCa. Inhibition of LPS/Toll-like receptor 4 signaling suppressed HFD-induced tumor growth. The number of mast cells increased around the cancer foci in total prostatectomy specimens of severely obese patients. In conclusion, HFD promotes PCa growth through histamine signaling via mast cells. Dietary high-fat induced gut dysbiosis might be involved in the inflammatory cancer growth.

Graphical Abstract

What's new?

High-fat diets consisting of large amounts of animal fat are linked to an increased risk of prostate cancer, an association attributed in part to the ability of excess fat to induce inflammation in prostate immune cells. While the mechanism behind this phenomenon is unknown, the present study shows that high animal fat intake promotes prostate cancer growth via histamine signaling by mast cells. In addition, in mice, gut dysbiosis induced by a high-fat diet resulted in elevated lipopolysaccharide (LPS) levels, whereas inhibition of LPS signaling suppressed tumor growth. The findings reveal novel links between fat intake and inflammation in cancer.

CONFLICT OF INTEREST

The authors declare no conflicts of interest.

DATA AVAILABILITY STATEMENT

The reported cDNA microarray data are available at GEO under the accession number GSE184381. Other data that support the findings of this study are available from the corresponding author upon reasonable request.

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