Results 31 to 40 of about 47,323 (291)

Disruption of a cystine transporter downregulates expression of genes involved in sulfur regulation and cellular respiration

open access: yesBiology Open, 2016
Cystine and cysteine are important molecules for pathways such as redox signaling and regulation, and thus identifying cellular deficits upon deletion of the Saccharomyces cerevisiae cystine transporter Ers1p allows for a further understanding of cystine
Jessica A. Simpkins   +10 more
doaj   +1 more source

Cystine transporter SLC7A11/xCT in cancer: ferroptosis, nutrient dependency, and cancer therapy

open access: yesProtein & Cell, 2020
The cystine/glutamate antiporter SLC7A11 (also commonly known as xCT) functions to import cystine for glutathione biosynthesis and antioxidant defense and is overexpressed in multiple human cancers.
Pranavi Koppula, Li Zhuang, Boyi Gan
doaj   +1 more source

The Regulation of Trace Metal Elements in Cancer Ferroptosis

open access: yesAdvanced Biology, EarlyView.
The induction of ferroptosis inhibits tumor growth, enhances anticancer efficacy, and overcomes drug resistance. Recent evidence shows nonferrous metal elements play a role in ferroptosis. This review focuses on how trace metals regulate ferroptosis processes like iron accumulation, lipid peroxidation, and antioxidant defense.
Xiaoyan Wang   +5 more
wiley   +1 more source

p53 Suppresses Metabolic Stress-Induced Ferroptosis in Cancer Cells

open access: yesCell Reports, 2018
How cancer cells respond to nutrient deprivation remains poorly understood. In certain cancer cells, deprivation of cystine induces a non-apoptotic, iron-dependent form of cell death termed ferroptosis.
Amy Tarangelo   +6 more
doaj   +1 more source

Quantitation of L-cystine in Food Supplements and Additives Using 1H qNMR: Method Development and Application

open access: yesFoods, 2023
Cystine-enriched food supplements are increasingly popular due to their beneficial health effects. However, the lack of industry standards and market regulations resulted in quality issues with cystine food products, including cases of food adulteration ...
Zhen Chen   +4 more
doaj   +1 more source

H2O2‐Generating Advanced Nanomaterials for Cancer Treatment

open access: yesAdvanced Functional Materials, EarlyView.
H2O2‐generating nanoplatforms can exploit tumor redox imbalance for O2 and toxic reactive oxygen species generation, leading to hypoxia reversal, and apoptosis of cancer cells, respectively. This review highlights the mechanisms of these nanoplatforms, including exogenous H₂O₂ delivery, endogenous amplification, and metal peroxides, which leads to ...
Kiyan Musaie   +8 more
wiley   +1 more source

Kidney Stone Dissolution By Tetherless, Enzyme‐Loaded, Soft Magnetic Miniature Robots

open access: yesAdvanced Healthcare Materials, EarlyView.
Wireless magnetic robots are developed for kidney stone dissolution. The robots navigate through a urinary tract model from bladder and ureter to renal pelvis with the help of external magnetic fields. The filaments are loaded with urease enzyme which catalyzes urea to carbon dioxide and ammonia, thereby increasing pH to basic regime and supporting ...
Afarin Khabbazian   +15 more
wiley   +1 more source

Biosynthesis of food constituents: Amino acids. 3. Modified proteinogenic amino acids - a review

open access: yesCzech Journal of Food Sciences, 2006
This review article gives a survey of principal pathways that lead to the biosynthesis of the modified principal proteinogenic amino acids, i.e. cystine, 4-hydroxyproline, 5-hydroxylysine, 3-methylhistidine, and O-phosphoserine.
Jan Velíšek, Karel Cejpek
doaj   +1 more source

Contents of Urinary System Stones in North Marmara Region and Their Distribution by Gender

open access: yesJournal of Urological Surgery, 2020
Objective:We aimed to determine the contents of kidney stones in our country by evaluating the results of the stone analysis of patients who underwent surgery due to ureteral or kidney stones or experienced spontaneous stone expulsion.Materials and ...
Ekrem Güner, Kamil Gökhan Şeker
doaj   +1 more source

Multienzyme (3‐in‐1)‐Mimicking a Single Nucleobase‐Derived Bionanozyme for Versatile Environmental and Biomedical Applications

open access: yesAdvanced Healthcare Materials, EarlyView.
This study reports the development of bioinspired 2D crystalline Bionanozyme derived from a single nucleobase. It effectively mimics multienzyme activity to detect and remove phenolic pollutants, identify disease biomarkers with high sensitivity, and protect cells from oxidative stress.
Subrat Vishwakarma   +8 more
wiley   +1 more source

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