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Updated: Jun 15, 2025

Studying the Effects of Tumor-Secreted Paracrine Ligands on Macrophage Activation using Co-Culture with Permeable Membrane Supports
Published on: November 28, 2019
Multifaceted metabolic role of infections in the tumor microenvironment
Hanna F Willenbockel1, Birte Dowerg1, Thekla Cordes1
1Department of Bioinformatics and Biochemistry, Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany; Research Group Cellular Metabolism in Infection, Helmholtz Centre for Infection Research, Braunschweig, Germany.
Abstract:
The impact of bacteria and viruses on tumor growth has long been recognized. In recent decades, interest in the role of microorganisms in the tumor microenvironment (TME) has expanded. Infections induce metabolic reprogramming and influence immune responses within the TME that may either support proliferation and metastasis or limit tumor growth. The natural ability to infect cells and alter the TME is also utilized for cancer detection and treatment. In this review, we discuss recent discoveries about the mechanisms of bacteria and viruses affecting TME, as well as strategies in cancer therapy focusing on metabolic alterations. Infections with engineered bacteria and viruses represent promising therapeutic approaches to develop novel and more effective therapies to constrain tumor growth.
Insights
Microorganisms like bacteria and viruses significantly impact tumor growth by altering the tumor microenvironment (TME). Engineered microbes offer promising new strategies for cancer detection and treatment, focusing on metabolic reprogramming.
Area of Science:
- Oncology
- Microbiology
- Immunology
Background:
- The influence of microorganisms on tumor development is a recognized phenomenon.
- Recent research highlights the expanded role of the tumor microenvironment (TME) in hosting microbial communities.
- Infections can reprogram tumor cell metabolism and modulate immune responses, affecting cancer progression.
Purpose of the Study:
- To review recent findings on how bacteria and viruses mechanistically affect the TME.
- To explore therapeutic strategies for cancer treatment that leverage microbial interactions and metabolic alterations.
- To discuss the potential of engineered bacteria and viruses in novel cancer therapies.
Main Methods:
- Literature review of recent discoveries on microbial impact on TME.
- Analysis of mechanisms underlying microbial influence on tumor cell metabolism and immunity.
- Examination of current and emerging cancer therapy strategies involving microbes.
Main Results:
- Microbial infections induce significant metabolic reprogramming within the TME.
- These infections modulate immune responses, with dual effects on tumor proliferation and metastasis.
- The inherent ability of microbes to alter the TME is being harnessed for cancer detection and treatment.
Conclusions:
- Bacteria and viruses play a complex role in cancer, influencing tumor growth and metastasis.
- Targeting microbial-induced metabolic alterations presents a promising avenue for cancer therapy.
- Engineered bacteria and viruses represent a novel frontier for developing effective cancer treatments.
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