Article
Plant Sciences
Adeola Folasade Ehigie, Peng Wei, Taotao Wei, Xiyun Yan, Olufunso O. Olorunsogo, Fiyinfoluwa Demilade Ojeniyi, Leonard Ona Ehigie
Summary: The study aimed to investigate the mechanism of cell death in breast and lung cancer cell lines treated with fractions derived from bitter melon extract. The results showed that the fractions reduced mitochondrial membrane potential and intracellular ATP levels, while increasing reactive oxygen species levels. However, they did not activate caspase-3 or release cytochrome c in the cancer cells, suggesting a different mechanism of cell death induction.
JOURNAL OF ETHNOPHARMACOLOGY
(2021)
Review
Biochemistry & Molecular Biology
Javier Florido, Cesar Rodriguez-Santana, Laura Martinez-Ruiz, Alba Lopez-Rodriguez, Dario Acuna-Castroviejo, Iryna Rusanova, Germaine Escames
Summary: ROS are highly reactive molecules that regulate important signaling pathways. Tumor cells have altered redox balance compared to normal cells, making them susceptible to anti-tumoral therapy targeting ROS levels and antioxidant system capacity. Melatonin has potential as an innovative cancer treatment, but its mechanism of action remains unclear, limiting its clinical applications.
Article
Biochemistry & Molecular Biology
James H. Schofield, Zachary T. Schafer
Summary: The relationship between mitophagy and ROS production is complex and not fully understood. This review discusses mtROS generation and their detrimental effects on cellular viability, along with the cellular defense mechanisms against oxidative stress. Furthermore, the prominent mechanisms governing mitophagy induction that bear on oxidative stress are explored.
ANTIOXIDANTS & REDOX SIGNALING
(2021)
Article
Engineering, Environmental
Guoliang Chen, Mingxing Wang, Panpan Zhu, Guixue Wang, Tingzhang Hu
Summary: Pyraoxystrobin (SYP-3343), a newly-invented strobilurin fungicide, exhibits high toxicity to aquatic organisms, particularly in zebrafish embryos, through affecting cell cycle, mitochondrial membrane potential, and reactive oxygen species generation. This toxicity is dose- and time-dependent, inducing apoptosis in zebrafish embryos.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Review
Immunology
Miranda D. Chavez, Hubert M. Tse
Summary: Mitochondrial dysfunction and oxidative stress are associated with T cell-mediated autoimmune diseases, and targeting metabolic pathways can inhibit autoreactive T cell activation. Increasing the requirements of Tregs for ROS and oxidative phosphorylation can promote self-tolerance and inhibit the activity of autoreactive T cells.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Chou-Yuan Ko, Po-Chang Shih, Po-Wei Huang, Yi-Hsin Lee, Yen-Fu Chen, Ming-Hong Tai, Chi-Hao Liu, Zhi-Hong Wen, Hsiao-Mei Kuo
Summary: Sinularin was found to effectively inhibit the growth of hepatocellular carcinoma SK-HEP-1 cells at a concentration of 10 μM, inducing DNA fragmentation and apoptosis, as well as affecting cell migration and colony formation. Additionally, it altered the expression levels of various proteins related to cell signaling and metastasis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Andrew P. Bischer, Timothy M. Baran, Andrew P. Wojtovich
Summary: Environmental surveillance-mediated behavior in Caenorhabditis elegans integrates multiple cues and is coordinated by neurons through signaling cascades. Despite lacking eyes, C. elegans is able to perceive and react to the color blue. This study explains this color perception by showing that internally-generated reactive oxygen species (ROS), in response to light, add to exogenous sources of ROS. Multiple sub-threshold sources of ROS are integrated to coordinate behavioral responses with internal cues. Blue light affects C. elegans behavior through ROS generation by endogenous flavins, mediated by the neuronal gustatory photoreceptor like protein, LITE-1. Overall, this study demonstrates that ROS and LITE-1 play central roles in C. elegans foraging behavior through integration of multiple inputs, including light.
Article
Oncology
Tanaya Lahiri, Lara Brambilla, Joshua Andrade, Manor Askenazi, Beatrix Ueberheide, David E. Levy
Summary: Mitochondrial STAT3 regulates complex I dehydrogenase activity, impacting NAD+ regeneration, thus indirectly controlling antioxidant gene expression to promote proliferation and migration in triple-negative breast cancer cells.
MOLECULAR ONCOLOGY
(2021)
Article
Immunology
Nan-Nan Liang, Ying Zhao, Yue-Yue Guo, Zhi-Hui Zhang, Lan Gao, De-Xin Yu, De-Xiang Xu, Shen Xu
Summary: This study found that mitochondria-derived reactive oxygen species (ROS) contribute to renal cell ferroptosis during lipopolysaccharide (LPS)-induced acute kidney injury (AKI). Inhibition of ferroptosis and scavenging of mitochondrial ROS with specific inhibitors, ferrostatin-1 and MitoQ, respectively, attenuated renal lipid peroxidation, ferroptosis-characteristic mitochondrial damage, and renal cell death. These findings suggest that mitochondria-targeted antioxidants may be potential therapeutic agents for sepsis-induced AKI.
INTERNATIONAL IMMUNOPHARMACOLOGY
(2022)
Article
Anatomy & Morphology
Shao-Peng Lin, Jingyi Bu, Shan Ye, Qiangda Xie, Jue-Xian Wei, Xiaofang Yin, Fen Mei, Pei-Yi Lin, Xiao-Hui Chen
Summary: This study investigated whether AMPK-induced glucose metabolic and mitochondrial dysfunction were related to glutamate-dependent ROS injury of neurons. The results showed that AMPK phosphorylation promoted glucose uptake, enhanced oxygen consumption rate and intracellular ROS levels. Inhibition of AMPK mitigated glutamate-induced cellular toxicity. These findings suggest that AMPK phosphorylation may be a potential target for treating glutamate-induced neurotoxicity.
Article
Cell Biology
Yanhong Wang, Xinyu Mang, Xuran Li, Zhengyu Cai, Fei Tan
Summary: This study investigated the effect and mechanism of cold atmospheric plasma (CAP) on the proliferation and apoptosis of lung cancer and colon cancer cells. The results showed that CAP treatment inhibited tumor cell proliferation and induced apoptosis through the activation of the mitochondrial pathway.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2022)
Article
Food Science & Technology
Pawan Kumar Raut, Hui Seong Lee, Sang Hoon Joo, Kyung-Soo Chun
Summary: Melanoma is a highly aggressive and treatment-resistant cancer, and a new study found that TQ can induce apoptosis in melanoma cells by hindering the Jak2/STAT3 signaling pathway through ROS generation.
FOOD AND CHEMICAL TOXICOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Hiromu Ito, Hiromi Kurokawa, Hirofumi Matsui
Summary: Mitochondria, essential organelles for energy production in eukaryotes, generate reactive oxygen species during the process which play pivotal roles in cell signaling and iron homeostasis regulation. The regulation of iron transportation, involving proteins like HCP1, DMT1, and mitoferrin, is increasingly understood in relation to mitochondrial reactive oxygen species and diseases.
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
(2021)
Article
Biochemistry & Molecular Biology
Andrey Y. Vinokurov, Olga A. Stelmashuk, Polina A. Ukolova, Evgeny A. Zherebtsov, Andrey Y. Abramov
Summary: The brain produces various reactive oxygen species at different rates in different brain regions, with the brain stem and cerebellum being more sensitive to oxidative stress. Mitochondrial ROS has minor implications to total ROS production, and levels of lipid peroxidation and GSH vary across brain regions.
FREE RADICAL BIOLOGY AND MEDICINE
(2021)
Article
Nutrition & Dietetics
Kristen D. Turner, Ana Kronemberger, Dam Bae, Joshua M. Bock, William E. Hughes, Kenichi Ueda, Andrew J. Feider, Satoshi Hanada, Luis G. O. de Sousa, Matthew P. Harris, Ethan J. Anderson, Sue C. Bodine, M. Bridget Zimmerman, Darren P. Casey, Vitor A. Lira
Summary: In individuals with type 2 diabetes mellitus, supplementation with nitrate/nitrite can increase VO(2)max, with improvements in skeletal muscle oxidative capacity seen in those with more pronounced increases in VO(2)max.