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Cancer treatments such as chemotherapy and radiation are expensive, painful, and often ineffective, as they compromise the patient’s immune system. Genetically-modified Salmonella Typhimurium (GMS) strains, however, have been proven to target tumors and suppress tumor growth. The GMS then undergo programmed lysis, optimally leaving no trace of Salmonella in the body. Additionally, constant culturing of S. Typhimurium changes the pH of the culture medium. The objective of this research is to investigate using Salmonella to induce changes in the typically acidic tumor microenvironment (TME) pH, ideally hindering tumor growth. Future studies involve utilizing Salmonella to treat a multitude of cancers.
Cancer is a disease that occurs when the cells in the body grow and replicate uncontrollably while spreading throughout the body. Apart from the pre-existing treatments, bacteria based treatments maybe used as an alternative. The main system used to deliver antigens to host tissues was Salmonella. In order to use Salmonella as an anti-cancer platform, there are three major steps which must be followed: cell lysis, tumor navigation, and Salmonella tumor persistence.