Targeted lactate dehydrogenase genes silencing in probiotic lactic acid bacteria: A possible paradigm shift in colorectal cancer treatment?

• Published in: Biomedicine & pharmacotherapy Vol. 160; p. 114371
• Main Authors: Macharia, John M., Kaposztas, Zsolt, Varjas, Tímea, Budán, Ferenc, Zand, Afshin, Bodnar, Imre, Bence, Raposa L.
• Format: Journal Article
• Language: English
• Published: France Elsevier Masson SAS 01.04.2023; Elsevier
• Subjects: Cancer management; Colon carcinogenesis; Colorectal Neoplasms - genetics; Colorectal Neoplasms - therapy; Glycolysis; Humans; L-Lactate Dehydrogenase - genetics; L-Lactate Dehydrogenase - metabolism; Lactate dehydrogenase A; Lactate dehydrogenase B; Lactic acid; Lactic Acid - metabolism; Probiotics - therapeutic use; Tumor Microenvironment - genetics; Lactate dehydrogenase B; Cancer management; Lactic acid; Colon carcinogenesis; Lactate dehydrogenase A
• ISSN: 0753-3322; 1950-6007
• DOI: 10.1016/j.biopha.2023.114371

Even though the pathophysiology of colorectal cancer (CRC) is complicated and poorly understood, interactions between risk factors appear to be key in the development and progression of the malignancy. The popularity of using lactic acid bacteria (LAB) prebiotics and probiotics to modulate the tumor microenvironment (TME) has grown widely over the past decade. The objective of this study was therefore to determine the detrimental effects of LAB-derived lactic acid in the colonic mucosa in colorectal cancer management. Six library databases and a web search engine were used to execute a structured systematic search of the existing literature, considering all publications published up until August 2022. A total of 7817 papers were screened, all of which were published between 1995 and August 2022. However, only 118 articles met the inclusion criterion. Lactic acid has been directly linked to the massive proliferation of cancerous cells since the glycolytic pathway provides cancerous cells with not only ATP, but also biosynthetic intermediates for rapid growth and proliferation. Our research suggests that targeting LAB metabolic pathways is capable of suppressing tumor growth and that the LDH gene is critical for tumorigenesis. Silencing of Lactate dehydrogenase, A (LDHA), B (LDHB), (LDHL), and hicD genes should be explored to inhibit fermentative glycolysis yielding lactic acid as the by-product. More studies are necessary for a solid understanding of this topic so that LAB and their corresponding lactic acid by-products do not have more adverse effects than their widely touted positive outcomes in CRC management. [Display omitted] •Prebiotics and probiotics modulate tumor microenvironment.•Metastasis, angiogenesis, metabolism, and immunosuppression depend on lactate level.•Lactic acid proliferates tumor cells by giving ATP & biosynthetic intermediaries.•Lactate dehydrogenase A (LDHA) gene is critical for tumorigenesis.•Targeting LAB metabolic pathways is capable of suppressing tumor growth.