Journal
CANCER CELL INTERNATIONAL
Volume 21, Issue 1, Pages -Publisher
BMC
DOI: 10.1186/s12935-021-02121-5
Keywords
Cancer-associated fibroblasts; Glutamine; Ammonia; Cancer cells; Tumor microenvironment
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Funding
- Graduate Innovation Fund of Jilin University [101832020CX299]
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CAF, the most abundant cells in the tumor microenvironment, plays a crucial role in cancer initiation, progression, metastasis, and metabolism. GLN, as a nitrogen reservoir for cancer cells and ammonia as a byproduct of its metabolism, have potential therapeutic implications in the crosstalk between CAFs and cancer cells.
Cancer-associated fibroblasts (CAFs), the most abundant cells in the tumor microenvironment, play an indispensable role in cancer initiation, progression, metastasis, and metabolism. The limitations of traditional treatments can be partly attributed to the lack of understanding of the role of the tumor stroma. For this reason, CAF targeting is gradually gaining attention, and many studies are trying to overcome the limitations of tumor treatment with CAF as a breakthrough. Glutamine (GLN) has been called a nitrogen reservoir for cancer cells because of its role in supporting anabolic processes such as fuel proliferation and nucleotide synthesis, but ammonia is a byproduct of the metabolism of GLN and other nitrogenous compounds. Moreover, in some studies, GLN has been reported as a fundamental nitrogen source that can support tumor biomass. In this review, we discuss the latest findings on the role of GLN and ammonia in the crosstalk between CAFs and cancer cells as well as the potential therapeutic implications of nitrogen metabolism.
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