Arsenic Contamination of Groundwater Is Determined by Complex Interactions between Various Chemical and Biological Processes

Hassan, Zahid; Westerhoff, Hans V.

doi:10.3390/toxics12010089

Cited by 4 publications

(1 citation statement)

References 348 publications

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“…Arsenic contamination poses a worldwide health challenge. [2]. Exposure to arsenic can result in various adverse health effects, causing a range of clinical complications [3].…”

Section: Introductionmentioning

confidence: 99%

SLC7A11 Silencing Modulates Ferroptosis and Autophagy to Reduce Sodium Arsenite-Induced Activation of Hepatic Stellate Cells

Ding,

Zhao,

Huang

et al. 2024

Preprint

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Arsenic is a prevalent environmental pollutant with recognized carcinogenic properties. Liver fibrosis is a frequent consequence of arsenic poisoning, with the activation of hepatic stellate cells (HSCs) being a central event. Solute Carrier Family 7 Member 11 (SLC7A11), a pivotal regulator of ferroptosis, may be involved in the process of arsenic-induced liver fibrosis. This study utilized lentiviral vector-mediated SLC7A11 silencing in LX-2 cells (a type of human hepatic stellate cells) to establish an SLC7A11 knockout cell model, which was then exposed to sodium arsenite (NaAsO2). Protein interactions were assessed through Protein Immunoprecipitation (IP), and protein levels were evaluated via Western blot analysis. It was found that NaAsO2 decreased cellular Fe2+ levels and nuclear receptor co-activator 4 (NCOA4) expression, with SLC7A11 silencing reversing these effects. Additionally, IP analysis revealed an interaction between Beclin1 and SLC7A11 proteins in LX-2 cells exposed to NaAsO2. Silencing SLC7A11 attenuated the reduction in Tumor Protein p53(P53), and p-mammalian target of rapamycin (p-mTOR) protein levels, along with the rise in Beclin1, Phosphorylated adenosine monophosphate activated protein kinase (p-AMPK), α-smooth muscle actin (α-SMA) and Fibroblast activation protein-α (FAP) induced by NaAsO2. Consequently, SLC7A11 silencing promoted cellular ferroptosis, reduced autophagy levels through the P53/AMPK/mTOR pathway, and inhibited HSC activation by NaAsO2, potentially mitigating liver fibrosis.

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“…Arsenic contamination poses a worldwide health challenge. [2]. Exposure to arsenic can result in various adverse health effects, causing a range of clinical complications [3].…”

Section: Introductionmentioning

confidence: 99%