Title : Intracellular arginine-dependent translation sensor reveals the dynamics of arginine starvation response and resistance in ASS1-negative cells.

Pub. Date : 2021 Jan 21

PMID : 33478587






7 Functional Relationships(s)
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Protein Name
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1 Intracellular arginine-dependent translation sensor reveals the dynamics of arginine starvation response and resistance in ASS1-negative cells. Arginine argininosuccinate synthase 1 Homo sapiens
2 Intracellular arginine-dependent translation sensor reveals the dynamics of arginine starvation response and resistance in ASS1-negative cells. Arginine argininosuccinate synthase 1 Homo sapiens
3 BACKGROUND: Many cancers silence the metabolic enzyme argininosuccinate synthetase 1 (ASS1), the rate-limiting enzyme for arginine biosynthesis within the urea cycle. Arginine argininosuccinate synthase 1 Homo sapiens
4 BACKGROUND: Many cancers silence the metabolic enzyme argininosuccinate synthetase 1 (ASS1), the rate-limiting enzyme for arginine biosynthesis within the urea cycle. Arginine argininosuccinate synthase 1 Homo sapiens
5 Consequently, ASS1-negative cells are susceptible to depletion of extracellular arginine by PEGylated arginine deiminase (ADI-PEG20), an agent currently being developed in clinical trials. Arginine argininosuccinate synthase 1 Homo sapiens
6 As the primary mechanism of resistance to arginine depletion is re-expression of ASS1, we sought a tool to understand the temporal emergence of the resistance phenotype at the single-cell level. Arginine argininosuccinate synthase 1 Homo sapiens
7 RESULTS: Every ASS1-deficient cell analyzed was found to respond to arginine deprivation by decreased expression of the sensor, indicating an absence of resistance in the naive cell population. Arginine argininosuccinate synthase 1 Homo sapiens