{"title":"Extracellularly secreted cysteine derived from cystine regulates oxidative and electrophilic stress in HepG2 cells.","authors":"Hanako Aoki, Yasuhiro Shinkai, Masahiro Akiyama, Satoshi Yamazaki, Motohiro Nishida, Yoshito Kumagai","doi":"10.1080/10715762.2024.2350524","DOIUrl":"10.1080/10715762.2024.2350524","url":null,"abstract":"<p><p>While cysteine (CysSH) is known to be exported into the extracellular space, its biological significance is not well understood. The present study examined the movement of extracellular CysSH using stable isotope-labeled cystine (CysSSCys), which is transported into cells and reduced to CysSH. Exposure of HepG2 cells to 100 µM stable isotope-labeled CysSSCys resulted in 70 µM labeled CysSH in cell medium 1 h after CysSSCys exposure. When the cell medium was collected and incubated with either hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) or atmospheric electrophiles, such as 1,2-naphthoquinone, 1,4-naphthoquinone and 1,4-benzoquinone, CysSH in the cell medium was almost completely consumed. In contrast, extracellular levels of CysSH were unaltered during exposure of HepG2 cells to H<sub>2</sub>O<sub>2</sub> for up to 2 h, suggesting redox cycling of CysSSCys/CysSH in the cell system. Experiments with and without changing cell medium containing CysSH from HepG2 cells revealed that oxidative and electrophilic modifications of cellular proteins, caused by exposure to H<sub>2</sub>O<sub>2</sub> and 1,2-naphthoquinone, were significantly repressed by CysSH in the medium. We also examined participation of enzymes and/or antioxidants in intracellular reduction of CysSSCys to CysSH. These results provide new findings that extracellular CysSH derived from CysSSCys plays a role in the regulation of oxidative and electrophilic stress.</p>","PeriodicalId":12411,"journal":{"name":"Free Radical Research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140908475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Free Radical ResearchPub Date : 2024-05-01Epub Date: 2024-08-04DOI: 10.1080/10715762.2024.2386459
Saori Noguchi, William E Boeglin, Ned A Porter, Alan R Brash
{"title":"Heme-catalyzed degradation of linoleate 9-hydroperoxide (9-HPODE) forms two allylic epoxy-ketones via a proposed pseudo-symmetrical diepoxy radical intermediate.","authors":"Saori Noguchi, William E Boeglin, Ned A Porter, Alan R Brash","doi":"10.1080/10715762.2024.2386459","DOIUrl":"10.1080/10715762.2024.2386459","url":null,"abstract":"<p><p>Heme-initiated decomposition of unsaturated fatty acid hydroperoxides creates alkoxyl radicals that propagate a complex series of reactions to hydroxy, keto, epoxy and aldehydic products. Herein, among the products from the hematin-catalyzed degradation of 9-hydroperoxy-linoleic acid (9-HPODE), we observed a double peak on normal-phase HPLC that resolved on RP-HPLC into equal proportions of two epoxy-allylic ketones with identical UV spectra. Their proton NMR spectra were also indistinguishable and consistent with 9,10-<i>trans</i>-epoxy-11<i>E</i>-13-keto- and 9-keto-10<i>E</i>-12,13-<i>trans</i>-epoxy-octadecenoic acids. Acid hydrolysis to the corresponding dihydroxy-ketones and GC-MS analysis identified the earlier eluting product on RP-HPLC as the 9,10-epoxy regio-isomer. Starting from the C9-hydroperoxide, recovery of the two epoxy-ketones in equal proportions suggests their formation from a common intermediate. Earlier work has proposed formation of a pseudo-symmetrical diepoxy radical (9,10-epoxy-11(•)-12,13-epoxy, derived from an epoxy allylic hydroperoxide precursor) in the carbon chain fragmentation leading to aldehydic products. This intermediate in pathways of alkoxyl radical reactions forms equal pairs of aldehydes, and now also a pair of epoxy-ketones, and based on mechanism the same products arise from either 9-HPODE or 13-HPODE. Our results point to the intermediacy of this diepoxy-carbinyl radical in the origin of at least two classes of linoleate peroxidation products, and it should be considered as a viable intermediate for homo-conjugated diene peroxidation in general. The reactions could contribute to the aldehydes and epoxy-ketones in tissues undergoing oxidative transformations of polyunsaturated fatty acids.</p>","PeriodicalId":12411,"journal":{"name":"Free Radical Research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11360661/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141888962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Free Radical ResearchPub Date : 2024-05-01Epub Date: 2024-07-04DOI: 10.1080/10715762.2024.2375200
Daniel Vargas, Hecson Segat, Mailine Gehrcke, Vinicius Costa Prado, Karine Roversi, Sabrina Grendene Muller, Patrícia Severo do Nascimento, Cristina Wayne Nogueira, Marilise Escobar Burger, Fabiana Elias, Leonardo Gruchouskei, Letícia Cruz, Daniel Curvello de Mendonça Muller
{"title":"Indole-3-carbinol loaded-nanocapsules modulated inflammatory and oxidative damages and increase skin wound healing in rats.","authors":"Daniel Vargas, Hecson Segat, Mailine Gehrcke, Vinicius Costa Prado, Karine Roversi, Sabrina Grendene Muller, Patrícia Severo do Nascimento, Cristina Wayne Nogueira, Marilise Escobar Burger, Fabiana Elias, Leonardo Gruchouskei, Letícia Cruz, Daniel Curvello de Mendonça Muller","doi":"10.1080/10715762.2024.2375200","DOIUrl":"10.1080/10715762.2024.2375200","url":null,"abstract":"<p><p>This study evaluated the effects of topically applied hydrogels (HG) containing nanoencapsulated indol-3-carbinol (I3C) and its free form in a rat model of skin wounds. Formulations were topically applied twice a day for five days to the wounds. On days 1, 3, and 6, the wound area was measured to verify the % of regression. On the sixth day, the animals were euthanized for the analysis of the inflammatory and oxidative profile in wounds. The nanocapsules (NC) exhibited physicochemical characteristics compatible with this kind of suspension. After five hours of exposure to ultraviolet C, more than 78% of I3C content in the suspensions was still observed. The NC-I3C did not modify the physicochemical characteristics of HG when compared to the HG base. In the <i>in vivo</i> study, an increase in the size of the wound was observed on the 3rd experimental day, which was lower in the treated groups (mainly in HG-NC-I3C) compared to the control. On the 6th day, HG-I3C, HG-NC-B, and HG-NC-I3C showed lower regression of the wound compared to the control. Additionally, HG-NC-I3C exhibited an anti-inflammatory effect (as observed by decreased levels of interleukin-1B and myeloperoxidase), reduced oxidative damage (by decreased reactive species, lipid peroxidation, and protein carbonylation levels), and increased antioxidant defense (by improved catalase activity and vitamin C levels) compared to the control. The current study showed more satisfactory results in the HG-NC-I3C group than in the free form of I3C in decreasing acute inflammation and oxidative damage in wounds.</p>","PeriodicalId":12411,"journal":{"name":"Free Radical Research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141497606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mechanism of non-thermal atmospheric plasma in anti-tumor: influencing intracellular RONS and regulating signaling pathways.","authors":"Wenjie Wang, Peijia Zheng, Liang Yan, Xiaoman Chen, Zhicheng Wang, Qi Liu","doi":"10.1080/10715762.2024.2358026","DOIUrl":"10.1080/10715762.2024.2358026","url":null,"abstract":"<p><p>Non-thermal atmospheric plasma (NTAP) has been proven to be an effective anti-tumor tool, with various biological effects such as inhibiting tumor proliferation, metastasis, and promoting tumor cell apoptosis. At present, the main conclusion is that ROS and RNS are the main effector components of NTAP, but the mechanisms of which still lack systematic summary. Therefore, in this review, we first summarized the mechanism by which NTAP directly or indirectly causes an increase in intracellular RONS concentration, and the multiple pathways dysregulation (i.e. NRF2, PI3K, MAPK, NF-κB) induced by intracellular RONS. Then, we generalized the relationship between NTAP induced pathways dysregulation and the various biological effects it brought. The summary of the anti-tumor mechanism of NTAP is helpful for its further research and clinical transformation.</p>","PeriodicalId":12411,"journal":{"name":"Free Radical Research","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141070737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aline Maria Brito Lucas, Plinio Bezerra Palacio, Pedro Lourenzo Oliveira Cunha, Heberty Tarso Facundo
{"title":"Calorie restriction anti-hypertrophic effects are associated with improved mitochondrial content, blockage of Ca2+-induced mitochondrial damage, and lower reverse electron transport-mediated oxidative stress","authors":"Aline Maria Brito Lucas, Plinio Bezerra Palacio, Pedro Lourenzo Oliveira Cunha, Heberty Tarso Facundo","doi":"10.1080/10715762.2024.2342962","DOIUrl":"https://doi.org/10.1080/10715762.2024.2342962","url":null,"abstract":"Calorie restriction is a nutritional intervention that reproducibly protects against the maladaptive consequences of cardiovascular diseases. Pathological cardiac hypertrophy leads to cellular grow...","PeriodicalId":12411,"journal":{"name":"Free Radical Research","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140615666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The effect of low-level laser therapy on the oxidative stress level and quality of life in patients with Hashimoto’s thyroiditis","authors":"Sümeyye Tunç, Şükriye Leyla Altuntaş, Murat Atmaca, Çağrı Çakıcı, Türkan Yiğitbaşı, Yeong‑Cheng Liou, Wei-An Chang","doi":"10.1080/10715762.2024.2339892","DOIUrl":"https://doi.org/10.1080/10715762.2024.2339892","url":null,"abstract":"This study aimed to examine the effects of low-level laser therapy (LLLT) combined with levothyroxine replacement therapy on thyroid function, oxidative stress (OS), and quality of life in patients...","PeriodicalId":12411,"journal":{"name":"Free Radical Research","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140615693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ginsenoside Re protects against kainate-induced neurotoxicity in mice by attenuating mitochondrial dysfunction through activation of the signal transducers and activators of transcription 3 signaling","authors":"YenNhiDoan Nguyen, JiHoon Jeong, Naveen Sharma, Ngoc KimCuong Tran, Hoang-Yen Phi Tran, Duy-Khanh Dang, JungHoon Park, Jae Kyung Byun, Sung Kwon Ko, Seung-Yeol Nah, Hyoung-Chun Kim, Eun-Joo Shin","doi":"10.1080/10715762.2024.2341885","DOIUrl":"https://doi.org/10.1080/10715762.2024.2341885","url":null,"abstract":"It was demonstrated that ginsenosides exert anti-convulsive potentials and interleukin-6 (IL-6) is protective from excitotoxicity induced by kainate (KA), a model of temporal lobe epilepsy. Ginseno...","PeriodicalId":12411,"journal":{"name":"Free Radical Research","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140591696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Association of poly(rC)-binding protein-2 with sideroflexin-3 through TOM20 as an iron entry pathway to mitochondria","authors":"Danyang Mi, Izumi Yanatori, Hao Zheng, Yingyi Kong, Tasuku Hirayama, Shinya Toyokuni","doi":"10.1080/10715762.2024.2340711","DOIUrl":"https://doi.org/10.1080/10715762.2024.2340711","url":null,"abstract":"Iron is essential for all the lives and mitochondria integrate iron into heme and Fe-S clusters for diverse use as cofactors. Here we screened mitochondrial proteins in KU812 human chronic myelogen...","PeriodicalId":12411,"journal":{"name":"Free Radical Research","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140591692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tássia Liz Araújo dos Santos Lessa, Thiago Macêdo Lopes Correia, Talita Costa dos Santos, Railmara Pereira da Silva, Beatriz Pereira da Silva, Maria Cláudia Magalhães Cavallini, Leonardo Silva Rocha, Albert Souza Peixoto, Beatriz S. Cugnasca, Gustavo Cervi, Thiago C. Correra, Augusto Cesar Gonçalves, William Tadeu Lara Festuccia, Thiago Mattar Cunha, Regiane Yatsuda, Amélia Cristina Mendes de Magalhães, Alcindo A. Dos Santos, Flávia Carla Meotti, Raphael Ferreira Queiroz
{"title":"A novel diselenide attenuates the carrageenan-induced inflammation by reducing neutrophil infiltration and the resulting tissue damage in mice","authors":"Tássia Liz Araújo dos Santos Lessa, Thiago Macêdo Lopes Correia, Talita Costa dos Santos, Railmara Pereira da Silva, Beatriz Pereira da Silva, Maria Cláudia Magalhães Cavallini, Leonardo Silva Rocha, Albert Souza Peixoto, Beatriz S. Cugnasca, Gustavo Cervi, Thiago C. Correra, Augusto Cesar Gonçalves, William Tadeu Lara Festuccia, Thiago Mattar Cunha, Regiane Yatsuda, Amélia Cristina Mendes de Magalhães, Alcindo A. Dos Santos, Flávia Carla Meotti, Raphael Ferreira Queiroz","doi":"10.1080/10715762.2024.2336566","DOIUrl":"https://doi.org/10.1080/10715762.2024.2336566","url":null,"abstract":"Selenium-containing compounds have emerged as promising treatment for redox-based and inflammatory diseases. This study aimed to investigate the in vitro and in vivo anti-inflammatory activity of a...","PeriodicalId":12411,"journal":{"name":"Free Radical Research","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140591686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Upasana Ganguly, Sukhpal Singh, Aritri Bir, Arindam Ghosh, Sankha Shubhra Chakrabarti, Reena V Saini, Luciano Saso, Marco Bisaglia, Sasanka Chakrabarti
{"title":"Alpha-synuclein interaction with mitochondria is the final mechanism of ferroptotic death induced by erastin in SH-SY5Y cells","authors":"Upasana Ganguly, Sukhpal Singh, Aritri Bir, Arindam Ghosh, Sankha Shubhra Chakrabarti, Reena V Saini, Luciano Saso, Marco Bisaglia, Sasanka Chakrabarti","doi":"10.1080/10715762.2024.2336563","DOIUrl":"https://doi.org/10.1080/10715762.2024.2336563","url":null,"abstract":"Ferroptosis has been characterized as a form of iron-dependent regulated cell death accompanied by an accumulation of reactive oxygen species and lipid oxidation products along with typical morphol...","PeriodicalId":12411,"journal":{"name":"Free Radical Research","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140602935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}