Theranostics 2022; 12(1):48-58. doi:10.7150/thno.65302 This issue Cite

Research Paper

Mucosal microbiome associates with progression to gastric cancer

Chin Wen Png1,2*, Wei Jie Jonathan Lee3,4,5*, Shijia Joy Chua3, Feng Zhu3, Gastric Consortium5, Khay Guan Yeoh3,4,5✉, Yongliang Zhang1,2✉

1. Department of Microbiology & Immunology, and NUSMED Immunology Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117456, Singapore.
2. Immunology Programme, Life Science Institute, National University of Singapore, Singapore 117456, Singapore.
3. Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore.
4. Division of Gastroenterology and Hepatology, National University Health System, Singapore 119074, Singapore.
5. Singapore Gastric Cancer Consortium, Singapore 119074, Singapore.
*Co-first authors

Citation:
Png CW, Lee WJJ, Chua SJ, Zhu F, Gastric Consortium5, Yeoh KG, Zhang Y. Mucosal microbiome associates with progression to gastric cancer. Theranostics 2022; 12(1):48-58. doi:10.7150/thno.65302. https://www.thno.org/v12p0048.htm
Other styles

File import instruction

Abstract

Graphic abstract

Background & Aims: Dysbiosis is associated with gastric cancer (GC) development. However, no longitudinal study was carried out to identify key bacteria that could predict for GC progression. Here, we aimed to investigate changes in bacterial metagenome prior to GC and develop a microbiome-based predictive model to accurately classify patients at risk of GC.

Methods: Bacterial 16S rDNA was sequenced from 89 gastric antral biopsies obtained from 43 participants. This study was nested in a prospective, longitudinal study, whereby study participants underwent screening gastroscopy, with further 1-2 yearly surveillance gastroscopies for at least 5 years. Putative bacterial taxonomic and functional features associated with GC carcinogenesis were identified by comparing between controls, patients with gastric intestinal metaplasia (IM) and patients with early gastric neoplasia (EGN).

Results: Patients with EGN had enrichment of Proteobacteria (in particular Proteus genus) and depletion of Bacteroidetes (in particular S24-7 family) in their gastric mucosa. Sequencing identified more patients with Helicobacter pylori compared to histopathological assessment, while H. pylori was also significantly enriched in EGN. Furthermore, a total of 261 functional features, attributing to 97 KEGG pathways were differentially abundant at baseline between patients who subsequent developed EGN (n = 13/39) and those who did not. At the same time, a constellation of six microbial taxonomic features present at baseline, provided the highest classifying power for subsequent EGN (AUC = 0.82).

Conclusion: Our study highlights early microbial changes associated with GC carcinogenesis, suggesting a potential role for prospective microbiome surveillance for GC.

Keywords: gastric cancer, microbiome, intestinal metaplasia, early gastric neoplasia, Helicobacter pylori


Citation styles

APA
Png, C.W., Lee, W.J.J., Chua, S.J., Zhu, F., Gastric Consortium5, Yeoh, K.G., Zhang, Y. (2022). Mucosal microbiome associates with progression to gastric cancer. Theranostics, 12(1), 48-58. https://doi.org/10.7150/thno.65302.

ACS
Png, C.W.; Lee, W.J.J.; Chua, S.J.; Zhu, F.; Gastric Consortium5; Yeoh, K.G.; Zhang, Y. Mucosal microbiome associates with progression to gastric cancer. Theranostics 2022, 12 (1), 48-58. DOI: 10.7150/thno.65302.

NLM
Png CW, Lee WJJ, Chua SJ, Zhu F, Gastric Consortium5, Yeoh KG, Zhang Y. Mucosal microbiome associates with progression to gastric cancer. Theranostics 2022; 12(1):48-58. doi:10.7150/thno.65302. https://www.thno.org/v12p0048.htm

CSE
Png CW, Lee WJJ, Chua SJ, Zhu F, Gastric Consortium5, Yeoh KG, Zhang Y. 2022. Mucosal microbiome associates with progression to gastric cancer. Theranostics. 12(1):48-58.

This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/). See http://ivyspring.com/terms for full terms and conditions.
Popup Image