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The Function and Molecular Mechanism of Commensal Microbiome in Promoting Malignant Progression of Lung Cancer

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Simple Summary The commensal microbiome in the human body must always be considered as a potential factor in carcinogenesis that may play a crucial role in the occurrence and progression… Click to show full abstract

Simple Summary The commensal microbiome in the human body must always be considered as a potential factor in carcinogenesis that may play a crucial role in the occurrence and progression of lung cancer. Herein, we give great details about the biological processes involved in lung cancer mediated by the microbiome. Potential mechanisms include regulating host immune activity by means of a variety of pathogenic factors, dysregulating host metabolism as a result of microbiome alterations, and microbiome dysbiosis, which are well elucidated in this article. Abstract The human commensal microbiome existing in an internal environment is relatively consistent with that of the host. The presence of bacterial dysbiosis, on the other hand, promptly results in the termination of this symbiotic association. The altered microbial structure in the lung may be responsible for the development of lung cancer by controlling the host’s inflammatory response and influencing a variety of immunological pathways. More and more studies have pointed to the fact that the commensal microbiota plays a vital role in both the development of tumors and the body’s response to lung cancer treatment. Microbiome dysbiosis, genotoxicity, virulence effect, and epigenetic dysregulations are some of the potential mechanisms that may lie behind the process of tumorigenesis that is mediated by microbiome. Other potential mechanisms include regulating host immune activity through a variety of pathogenic factors, dysregulating host metabolism as a result of microbiome alterations, and microbiome dysbiosis. In this historical overview, we go through some of the more recent mechanistic discoveries into the biological processes that are involved in lung cancer that are caused by bacteria. Without a question, obtaining a greater knowledge of the dynamic link between the lung microbiome and lung cancer has the potential to inspire the development of innovative early detection and customized treatment methods for lung cancer.

Keywords: progression lung; lung cancer; commensal microbiome; lung; host

Journal Title: Cancers
Year Published: 2022

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