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Zhang W, Guo C, Li Y, Wang H, Wang H, Wang Y, Wu T, Wang H, Cheng G, Man J, Chen S, Fu S, Yang L. Mitophagy mediated by HIF-1α/FUNDC1 signaling in tubular cells protects against renal ischemia/reperfusion injury. Ren Fail 2024; 46:2332492. [PMID: 38584135 PMCID: PMC11000611 DOI: 10.1080/0886022x.2024.2332492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 03/14/2024] [Indexed: 04/09/2024] Open
Abstract
Acute kidney injury (AKI) is associated with a high mortality rate. Pathologically, renal ischemia/reperfusion injury (RIRI) is one of the primary causes of AKI, and hypoxia-inducible factor (HIF)-1α may play a defensive role in RIRI. This study assessed the role of hypoxia-inducible factor 1α (HIF-1α)-mediated mitophagy in protection against RIRI in vitro and in vivo. The human tubular cell line HK-2 was used to assess hypoxia/reoxygenation (H/R)-induced mitophagy through different in vitro assays, including western blotting, immunofluorescence staining, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL), and reactive oxygen species (ROS) measurement. Additionally, a rat RIRI model was established for evaluation by renal histopathology, renal Doppler ultrasound, and transmission electron microscopy to confirm the in vitro data. The selective HIF-1α inhibitor LW6 reduced H/R-induced mitophagy but increased H/R-induced apoptosis and ROS production. Moreover, H/R treatment enhanced expression of the FUN14 domain-containing 1 (FUNDC1) protein. Additionally, FUNDC1 overexpression reversed the effects of LW6 on the altered expression of light chain 3 (LC3) BII and voltage-dependent anion channels as well as blocked the effects of HIF-1α inhibition in cells. Pretreatment of the rat RIRI model with roxadustat, a novel oral HIF-1α inhibitor, led to decreased renal injury and apoptosis in vivo. In conclusion, the HIF-1α/FUNDC1 signaling pathway mediates H/R-promoted renal tubular cell mitophagy, whereas inhibition of this signaling pathway protects cells from mitophagy, thus aggravating apoptosis, and ROS production. Accordingly, roxadustat may protect against RIRI-related AKI.
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Affiliation(s)
- Wenjun Zhang
- Department of Nephrology, Lanzhou University Affiliated Second Hospital, Lanzhou, China
- Gansu Provicne Clinical Research Center for Kidney Diseases, Lanzhou, China
| | - Chao Guo
- Scientific Research and Experimental Center, Gansu University of Chinese Medicine, Lanzhou, China
| | - Yi Li
- Department of Anesthesiology, Lanzhou University Affiliated Second Hospital, Lanzhou, China
| | - Hao Wang
- Department of Urology Surgery, Lanzhou University Affiliated Second Hospital, Lanzhou, China
| | - Huabing Wang
- Department of Urology Surgery, Lanzhou University Affiliated Second Hospital, Lanzhou, China
| | - Yingying Wang
- Department of Nephrology, Lanzhou University Affiliated Second Hospital, Lanzhou, China
| | - Tingting Wu
- Department of Functional Examination in Children, Lanzhou University Affiliated Second Hospital, Lanzhou, China
| | - Huinan Wang
- The Second Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Gang Cheng
- The Second Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Jiangwei Man
- Department of Urology Surgery, Lanzhou University Affiliated Second Hospital, Lanzhou, China
| | - Siyu Chen
- Department of Urology Surgery, Lanzhou University Affiliated Second Hospital, Lanzhou, China
| | - Shengjun Fu
- Department of Urology Surgery, Lanzhou University Affiliated Second Hospital, Lanzhou, China
| | - Li Yang
- Department of Urology Surgery, Lanzhou University Affiliated Second Hospital, Lanzhou, China
- Gansu Provicne Clinical Research Center for Urology, Lanzhou, China
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Yanagisawa S, Kamei T, Shimada A, Gladyck S, Aras S, Hüttemann M, Grossman LI, Kubo M. Resonance Raman spectral analysis of the heme site structure of cytochrome c oxidase with its positive regulator CHCHD2. J Inorg Biochem 2024; 260:112673. [PMID: 39094247 DOI: 10.1016/j.jinorgbio.2024.112673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 07/10/2024] [Accepted: 07/23/2024] [Indexed: 08/04/2024]
Abstract
Cytochrome c oxidase (CcO) reduces O2, pumps protons in the mitochondrial respiratory chain, and is essential for oxygen consumption in the cell. The coiled-coil-helix-coiled-coil-helix domain-containing 2 (CHCHD2; also known as mitochondrial nuclear retrograde regulator 1 [MNRR1], Parkinson's disease 22 [PARK22] and aging-associated gene 10 protein [AAG10]) is a protein that binds to CcO from the intermembrane space and positively regulates the activity of CcO. Despite the importance of CHCHD2 in mitochondrial function, the mechanism of action of CHCHD2 and structural information regarding its binding to CcO remain unknown. Here, we utilized visible resonance Raman spectroscopy to investigate the structural changes around the hemes in CcO in the reduced and CO-bound states upon CHCHD2 binding. We found that CHCHD2 has a significant impact on the structure of CcO in the reduced state. Mapping of the heme peripheries that result in Raman spectral changes in the structure of CcO highlighted helices IX and X near the hemes as sites where CHCHD2 takes action. Part of helix IX is exposed in the intermembrane space, whereas helix X, located between both hemes, may play a key role in proton uptake to a proton-loading site in the reduced state for proton pumping. Taken together, our results suggested that CHCHD2 binds near helix IX and induces a structural change in helix X, accelerating proton uptake.
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Affiliation(s)
| | - Takuto Kamei
- Graduate School of Science, University of Hyogo, Hyogo 678-1297, Japan
| | - Atsuhiro Shimada
- Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan
| | - Stephanie Gladyck
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Siddhesh Aras
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Maik Hüttemann
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Lawrence I Grossman
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Minoru Kubo
- Graduate School of Science, University of Hyogo, Hyogo 678-1297, Japan.
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Zhu X, Zheng H, Zhang Z, Ma S, Feng Q, Wang J, Wu G, Ng HY. Cytotoxicity evaluation of organophosphorus flame retardants using electrochemical biosensors and elucidation of associated toxic mechanisms. WATER RESEARCH 2024; 265:122262. [PMID: 39167971 DOI: 10.1016/j.watres.2024.122262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 07/03/2024] [Accepted: 08/12/2024] [Indexed: 08/23/2024]
Abstract
In recent years, organophosphorus flame retardants (OPFRs) have been widely used as substitutes for brominated flame retardants with excellent properties, and their initial toxicological effects on the water ecosystem and human health have gradually emerged. However, to date, research on the cytotoxicity and health risks of OPFRs is still limited. Therefore, this study aims to systematically explore the cytotoxic effects and toxic mechanisms of OPFRs on cells. Human liver cancer (HepG2) cells were adopted as an ideal model for toxicity evaluation due to their rapid growth and metabolism. This study proposes a sensitive electrochemical cell-based sensor constructed on a graphitized multi-walled carbon nanotube/ionic liquid/gold nanoparticle-modified electrode. The sensor was used to detect the cytotoxicity of tri(2-butylxyethyl) phosphate (TBEP), tributyl phosphate (TnBP), triphenyl phosphate (TPhP), tri(1,3-dichloro-2-propyl) phosphate (TDCIPP), tri(2-chloropropyl) phosphate (TCPP) and tri(2-chloroethyl) phosphate (TCEP) in the liquid medium, providing insight into their toxicity in water environments. The half-maximal inhibitory concentration (IC50) of TBEP, TnBP, TPhP, TDCIPP, TCPP and TCEP on HepG2 cells were 179.4, 194.9, 219.8, 339.4, 511.8 and 859.0 μM, respectively. Additionally, the cytotoxic mechanism of six OPFRs was discussed from the perspective of oxidative stress and apoptosis, and four indexes were correlated with toxicity. Furthermore, transcriptome sequencing was conducted, followed by a thorough analysis of the obtained sequencing results. This analysis demonstrated a significant enrichment of the p53 and PPAR pathways, both of which are closely associated with oxidative stress and apoptosis. This study presents a simplified and efficient technique for conducting in vitro toxicity studies on organophosphorus flame retardants in a water environment. Moreover, it establishes a scientific foundation for further investigation into the mechanisms of cytotoxicity associated with these compounds.
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Affiliation(s)
- Xiaolin Zhu
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Huizi Zheng
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Zhipeng Zhang
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Shuang Ma
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Qi Feng
- School of Environment, Northeast Normal University, Changchun 130117, PR China
| | - Jinsheng Wang
- Center for Water Research, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, 519087, China
| | - Guanlan Wu
- School of Environment, Northeast Normal University, Changchun 130117, PR China; Center for Water Research, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, 519087, China.
| | - How Yong Ng
- Center for Water Research, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai, 519087, China; Department of Civil and Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, 117576, Singapore.
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Wang J, Wang L, Feng X, Xu Y, Zhou L, Wang C, Wang M. Astragaloside IV attenuates fatty acid-induced renal tubular injury in diabetic kidney disease by inhibiting fatty acid transport protein-2. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 134:155991. [PMID: 39217653 DOI: 10.1016/j.phymed.2024.155991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 08/12/2024] [Accepted: 08/25/2024] [Indexed: 09/04/2024]
Abstract
BACKGROUND Renal tubular injury induced by free fatty acid bound to albumin is the key pathological basis for the progression of diabetic kidney disease. However, effective interventions are limited. Astragaloside IV, as a major bioactive component purified from Astragalus membranaceus (Fisch.) Bunge, possesses pharmacological properties of lowering blood glucose and proteinuria, and renal tubular protection in diabetic kidney disease. Further work is needed to understand the underlying molecular mechanisms. PURPOSE This study was designed to investigate the mechanism of renal tubular protection by astragaloside IV in diabetic kidney disease. METHODS Rats receiving high-fat diet combined with streptozotocin (30 mg/kg, i.p.) were gavaged with astragaloside IV (10 mg/kg/d or 20 mg/kg/d) or empagliflozin (1.72 mg/kg/d) for 8 weeks. In vitro, the NRK-52E cells were treated with free fatty acid-deleted BSA or palmitic acid-bound BSA in the presence or absence of astragaloside IV (5 μM, 10 μM, 20 μM) or 5 μM of mcc950. The effects of astragaloside IV on mitochondrial function, NLRP3/ASC/IL-18/IL-1β inflammatory cascade, and renal tubular injury were detected by pathological staining, immunoblotting, MitoSOX Red staining. Next, to investigate the mechanism of renal tubular protection by astragaloside IV, we transfected Fatp2 siRNA into BSA-PA-treated NRK-52E cells and injected lipofermata (a FATP2 inhibitor) intraperitoneally into free fatty acid-bound BSA overloaded rats with concomitant astragaloside IV treatment. RESULTS Treatment with astragaloside IV for 8 weeks dose-dependently attenuated the blood glucose, ratio of urinary albumin to creatinine, disorder of lipid metabolism, and pathological injury in diabetic kidney disease rats. In addition, astragaloside IV dose-dependently attenuated mitochondrial-derived reactive oxygen species and subsequent inhibiting NLRP3-mediated inflammatory cascade in diabetic kidney disease rats and palmitic acid-bound BSA-treated NRK-52E cells, thereby exerting renal tubular protection. More importantly, the effects of astragaloside IV on restoration of mitochondrial function, inhibition of inflammatory response and amelioration of renal tubular injury in vivo and in vitro were further enhanced when used in combination with Fatp2 siRNA or lipofermata. CONCLUSION Astragaloside IV exerts antioxidant and anti-inflammatory effects in diabetic kidney disease by inhibiting FATP2-mediated fatty acid transport, thereby attenuating renal tubular injury.
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Affiliation(s)
- Jing Wang
- Department of Traditional Chinese Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China.
| | - Lingchen Wang
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Key Laboratory of Liver and Kidney Diseases, Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; TCM institute of kidney disease, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xiaoxuan Feng
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Key Laboratory of Liver and Kidney Diseases, Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; TCM institute of kidney disease, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yizeng Xu
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Key Laboratory of Liver and Kidney Diseases, Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; TCM institute of kidney disease, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Liang Zhou
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Key Laboratory of Liver and Kidney Diseases, Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; TCM institute of kidney disease, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Chen Wang
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Key Laboratory of Liver and Kidney Diseases, Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; TCM institute of kidney disease, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Meng Wang
- Department of Nephrology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Key Laboratory of Liver and Kidney Diseases, Ministry of Education, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; TCM institute of kidney disease, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
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5
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Yang Y, Jiang S, Mu Y, Liu C, Han Y, Jiang J, Wang Y. Berberine prevents against myocardial injury induced by acute β-adrenergic overactivation in rats. J Appl Toxicol 2024; 44:1700-1713. [PMID: 38981847 DOI: 10.1002/jat.4659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/23/2024] [Accepted: 06/06/2024] [Indexed: 07/11/2024]
Abstract
The overactivation of β-adrenergic receptors (β-ARs) can result in acute myocardial ischemic injury, culminating in myocardial necrosis. Berberine (BBR) has exhibited promising potential for prevention and treatment in various heart diseases. However, its specific role in mitigating myocardial injury induced by acute β-AR overactivation remains unexplored. This study aimed to investigate the effects and underlying mechanisms of BBR pretreatment in a rat model of acute β-AR overactivation induced by a single dose of the nonselective β-adrenergic agonist isoprenaline (ISO). Rats were pretreated with saline or BBR (100 mg/kg/day) via gavage for 14 consecutive days, followed by a subcutaneous injection of ISO or saline on the 14th day. The findings indicated that BBR pretreatment significantly attenuated myocardial injury in ISO-stimulated rats, as evidenced by reduced pathological inflammatory infiltration, necrosis, and serum markers of myocardial damage. Additionally, BBR decreased oxidative stress and inflammation in the system and heart. Furthermore, BBR pretreatment enhanced myocardial ATP levels, improved mitochondrial dysfunction through increased Drp1 phosphorylation, and augmented myocardial autophagy. In a CoCl2-induced H9c2 cell hypoxic injury model, BBR pretreatment mitigated cellular injury, apoptosis, and oxidative stress while upregulating Drp1 and autophagy-associated proteins. Mechanistically, BBR pretreatment activated AKT, AMPK, and LKB1 both in vivo and in vitro, implicating the involvement of the AKT and LKB1/AMPK signaling pathways in its cardioprotective effects. Our study demonstrated the protective effects of BBR against myocardial injury induced by acute β-AR overactivation in rats, highlighting the potential of BBR as a preventive agent for myocardial injury associated with β-adrenergic overactivation.
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Affiliation(s)
- Yalin Yang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shuang Jiang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu Mu
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chilu Liu
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yanxing Han
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiandong Jiang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuhong Wang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Beauvieux A, Bourjea J, Fromentin JM, Jean C, Ciccione S, Ballorain K, Romero D, Dbouk Z, Hirschler A, Bertile F, Schull Q. Tracing troubles: Unveiling the hidden impact of inorganic contamination on juvenile green sea turtle. MARINE POLLUTION BULLETIN 2024; 208:117048. [PMID: 39368147 DOI: 10.1016/j.marpolbul.2024.117048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 09/09/2024] [Accepted: 09/23/2024] [Indexed: 10/07/2024]
Abstract
Human activities and climate change have negatively affected the world's oceans, leading to a decline of 30 to 60 % in coastal ecosystems' biodiversity and habitats. The projected increase in the human population to 9.7 billion by 2050 raises concerns about the sustainability of marine ecosystem conservation and exploitation. Marine turtles, as sentinel species, accumulate contaminants, including trace elements, due to their extensive migration and long-life span. However, there is a lack of data on the degree of contamination and their effects on marine turtles' health. This study focuses on assessing in-situ inorganic contamination in juvenile green sea turtles from La Réunion Island and its short-term impact on individual health, using conventional biomarkers and proteomics. The goals include examining contamination patterns in different tissues and identifying potential new biomarkers for long-term monitoring and conservation efforts. The study identified differential metal contamination between blood and scute samples, which could help illuminate temporal exposure to trace elements in turtle individuals. We also found that some conventional biomarkers were related to trace element exposure, while the proteome responded differently to various contaminant mixtures. Immune processes, cellular organization, and metabolism were impacted, indicating that contaminant mixtures in the wild would have an effect on turtle's health. Fifteen biomarker candidates associated with strong molecular responses of sea turtle to trace element contamination are proposed for future long-term monitoring. The findings emphasize the importance of using proteomic approaches to detect subtle physiological responses to contaminants in the wild and support the need for non-targeted analysis of trace elements in the biomonitoring of sea turtle health.
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Affiliation(s)
| | - Jérôme Bourjea
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Sète, France
| | | | - Claire Jean
- Centre d'Etude et de Découverte des Tortues Marines (CEDTM) Saint-Leu, Reunion Island, France
| | - Stéphane Ciccione
- Centre d'Etude et de Découverte des Tortues Marines (CEDTM) Saint-Leu, Reunion Island, France
| | - Katia Ballorain
- Kélonia, The Marine Turtle Observatory of Reunion Island, 46 rue du Gal de Gaulle, Saint-Leu, Reunion Island, France
| | - Diego Romero
- Toxicology Department, Faculty of Veterinary Medicine, University of Murcia, 30100 Murcia, Spain
| | - Zahraa Dbouk
- Université de Strasbourg, CNRS, IPHC UMR 7178, 23 rue du Loess, 67037, Strasbourg Cedex 2, France; Infrastructure Nationale de Protéomique ProFI, FR2048 CNRS CEA, Strasbourg 67087, France
| | - Aurélie Hirschler
- Université de Strasbourg, CNRS, IPHC UMR 7178, 23 rue du Loess, 67037, Strasbourg Cedex 2, France; Infrastructure Nationale de Protéomique ProFI, FR2048 CNRS CEA, Strasbourg 67087, France
| | - Fabrice Bertile
- Université de Strasbourg, CNRS, IPHC UMR 7178, 23 rue du Loess, 67037, Strasbourg Cedex 2, France; Infrastructure Nationale de Protéomique ProFI, FR2048 CNRS CEA, Strasbourg 67087, France
| | - Quentin Schull
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Sète, France
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Mu B, Zeng Y, Luo L, Wang K. Oxidative stress-mediated protein sulfenylation in human diseases: Past, present, and future. Redox Biol 2024; 76:103332. [PMID: 39217848 PMCID: PMC11402764 DOI: 10.1016/j.redox.2024.103332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2024] [Revised: 08/28/2024] [Accepted: 08/28/2024] [Indexed: 09/04/2024] Open
Abstract
Reactive Oxygen Species (ROS) refer to a variety of derivatives of molecular oxygen that play crucial roles in regulating a wide range of physiological and pathological processes. Excessive ROS levels can cause oxidative stress, leading to cellular damage and even cell demise. However, moderately elevated levels of ROS can mediate the oxidative post-translational modifications (oxPTMs) of redox-sensitive proteins, thereby affecting protein functions and regulating various cellular signaling pathways. Among the oxPTMs, ROS-induced reversible protein sulfenylation represents the initial form of cysteine oxidation for sensing redox signaling. In this review, we will summarize the discovery, chemical formation, and detection approaches of protein sulfenylation. In addition, we will highlight recent findings for the roles of protein sulfenylation in various diseases, including thrombotic disorders, diabetes, cardiovascular diseases, neurodegenerative diseases, and cancer.
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Affiliation(s)
- Baoquan Mu
- West China School of Basic Medical Sciences & Forensic Medicine, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yan Zeng
- West China School of Basic Medical Sciences & Forensic Medicine, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Li Luo
- Center for Reproductive Medicine, Department of Gynecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, 610041, China.
| | - Kui Wang
- West China School of Basic Medical Sciences & Forensic Medicine, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China.
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8
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Zhang M, Han Z, Liu L, Song W. Biological effect of U(VI) exposure on lung epithelial BEAS-2B cells. CHEMOSPHERE 2024:143451. [PMID: 39362378 DOI: 10.1016/j.chemosphere.2024.143451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2024] [Revised: 09/30/2024] [Accepted: 10/01/2024] [Indexed: 10/05/2024]
Abstract
In this study, the biological effects of U(VI) exposure on lung epithelial cells were investigated by MTT assay, immunofluorescence, flow cytometry, and Western blotting. U(VI)-induced stress triggers oxidative stress in cells, activates MAPK signaling pathways, and promotes inflammation. Additionally, U(VI) causes damage to the cell membrane structure and severe DNA injury, impacting the accuracy of transcription and translation. The results demonstrate that U(VI) exposure significantly inhibits cell proliferation and migration. This is attributed to the disruption of the PI3K/AKT/GSK-3β/β-catenin signaling pathway and the reduction in CyclinD1 expression, leading to a delayed cell cycle, decreased growth rate, mitochondrial damage, and reduced energy metabolism. This study provides a comprehensive understanding of the molecular mechanisms underlying uranium-induced cellular toxicity in lung epithelial cells.
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Affiliation(s)
- Mingxia Zhang
- College of Life Sciences, Anhui Normal University, Wuhu 241000, China; Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health & Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Zhou Han
- Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health & Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Lei Liu
- Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health & Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China; Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei 230031, China
| | - Wencheng Song
- College of Life Sciences, Anhui Normal University, Wuhu 241000, China; Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health & Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China; Hefei Cancer Hospital, Chinese Academy of Sciences, Hefei 230031, China; Collaborative Innovation Center of Radiation Medicine, Jiangsu Higher Education Institutions and School for Radiological and Interdisciplinary Sciences, Soochow University, Suzhou 215123, China.
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9
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Li Z, Xu ZM, Chen WP, Du XJ, Ou CX, Luo ZK, Wang R, Zhang CQ, Ge CD, Han M, Wang F, He RR, Sun WY, Ma J, Liang XY, Liu ZW. Tumor-repopulating cells evade ferroptosis via PCK2-dependent phospholipid remodeling. Nat Chem Biol 2024; 20:1341-1352. [PMID: 38720107 PMCID: PMC11427348 DOI: 10.1038/s41589-024-01612-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 03/27/2024] [Indexed: 09/28/2024]
Abstract
Whether stem-cell-like cancer cells avert ferroptosis to mediate therapy resistance remains unclear. In this study, using a soft fibrin gel culture system, we found that tumor-repopulating cells (TRCs) with stem-cell-like cancer cell characteristics resist chemotherapy and radiotherapy by decreasing ferroptosis sensitivity. Mechanistically, through quantitative mass spectrometry and lipidomic analysis, we determined that mitochondria metabolic kinase PCK2 phosphorylates and activates ACSL4 to drive ferroptosis-associated phospholipid remodeling. TRCs downregulate the PCK2 expression to confer themselves on a structural ferroptosis-resistant state. Notably, in addition to confirming the role of PCK2-pACSL4(T679) in multiple preclinical models, we discovered that higher PCK2 and pACSL4(T679) levels are correlated with better response to chemotherapy and radiotherapy as well as lower distant metastasis in nasopharyngeal carcinoma cohorts.
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Affiliation(s)
- Zhe Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Zhi-Min Xu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Wei-Peng Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xiao-Jing Du
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Chun-Xian Ou
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Zi-Kang Luo
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Rong Wang
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, China
| | - Chu-Qing Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Chao-Dong Ge
- The Second Affiliated Hospital, School of Public Health, State Key Laboratory of Experimental Hematology, Zhejiang University School of Medicine, Hangzhou, China
- The First Affiliated Hospital, Basic Medical Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, China
| | - Meng Han
- Protein Research Technology Center Protein Chemistry and Omics Platform, Tsinghua University, Beijing, China
| | - Fudi Wang
- The Second Affiliated Hospital, School of Public Health, State Key Laboratory of Experimental Hematology, Zhejiang University School of Medicine, Hangzhou, China
- The First Affiliated Hospital, Basic Medical Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, China
| | - Rong-Rong He
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, China
| | - Wan-Yang Sun
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, State Key Laboratory of Bioactive Molecules and Druggability Assessment, Jinan University, Guangzhou, China.
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China.
| | - Jun Ma
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China.
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China.
| | - Xiao-Yu Liang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China.
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China.
| | - Zhuo-Wei Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.
- Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, China.
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10
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Wang Y, Lilienfeldt N, Hekimi S. Understanding coenzyme Q. Physiol Rev 2024; 104:1533-1610. [PMID: 38722242 DOI: 10.1152/physrev.00040.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 04/08/2024] [Accepted: 05/01/2024] [Indexed: 08/11/2024] Open
Abstract
Coenzyme Q (CoQ), also known as ubiquinone, comprises a benzoquinone head group and a long isoprenoid side chain. It is thus extremely hydrophobic and resides in membranes. It is best known for its complex function as an electron transporter in the mitochondrial electron transport chain (ETC) but is also required for several other crucial cellular processes. In fact, CoQ appears to be central to the entire redox balance of the cell. Remarkably, its structure and therefore its properties have not changed from bacteria to vertebrates. In metazoans, it is synthesized in all cells and is found in most, and maybe all, biological membranes. CoQ is also known as a nutritional supplement, mostly because of its involvement with antioxidant defenses. However, whether there is any health benefit from oral consumption of CoQ is not well established. Here we review the function of CoQ as a redox-active molecule in the ETC and other enzymatic systems, its role as a prooxidant in reactive oxygen species generation, and its separate involvement in antioxidant mechanisms. We also review CoQ biosynthesis, which is particularly complex because of its extreme hydrophobicity, as well as the biological consequences of primary and secondary CoQ deficiency, including in human patients. Primary CoQ deficiency is a rare inborn condition due to mutation in CoQ biosynthetic genes. Secondary CoQ deficiency is much more common, as it accompanies a variety of pathological conditions, including mitochondrial disorders as well as aging. In this context, we discuss the importance, but also the great difficulty, of alleviating CoQ deficiency by CoQ supplementation.
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Affiliation(s)
- Ying Wang
- Department of Biology, McGill University, Montreal, Quebec, Canada
| | - Noah Lilienfeldt
- Department of Biology, McGill University, Montreal, Quebec, Canada
| | - Siegfried Hekimi
- Department of Biology, McGill University, Montreal, Quebec, Canada
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11
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Lv Z, Wang Z, Hu J, Su H, Liu B, Lang Y, Yu Q, Liu Y, Fan X, Yang M, Shen N, Zhang D, Zhang X, Wang R. LncRNA PVT1 induces mitochondrial dysfunction of podocytes via TRIM56 in diabetic kidney disease. Cell Death Dis 2024; 15:697. [PMID: 39349450 PMCID: PMC11442824 DOI: 10.1038/s41419-024-07107-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 09/19/2024] [Accepted: 09/23/2024] [Indexed: 10/02/2024]
Abstract
Mitochondrial dysfunction is a significant contributor to podocyte injury in diabetic kidney disease (DKD). While previous studies have shown that PVT1 might play a vital role in DKD, the precise molecular mechanisms are largely unknown. By analyzing the plasma and kidney tissues of DKD patients, we observed a significant upregulation of PVT1 expression, which exhibited a positive correlation with albumin/creatinine ratios and serum creatinine levels. Then, we generated mice with podocyte-specific deletion of PVT1 (Nphs2-Cre/Pvt1flox/flox) and confirmed that the deletion of PVT1 suppressed podocyte mitochondrial dysfunction and inflammation in addition to ameliorating diabetes-induced podocyte injury, glomerulopathy, and proteinuria. Subsequently, we cultured podocytes in vitro and observed that PVT1 expression was upregulated under hyperglycemic conditions. Mechanistically, we demonstrated that PVT1 was involved in mitochondrial dysfunction by interacting with TRIM56 post-transcriptionally to modulate the ubiquitination of AMPKα, leading to aberrant mitochondrial biogenesis and fission. Additionally, the release of mtDNA and mtROS from damaged mitochondria triggered inflammation in podocytes. Subsequently, we verified the important role of TRIM56 in vivo by constructing Nphs2-Cre/Trim56flox/flox mice, consistently with the results of Nphs2-Cre/Pvt1flox/flox mice. Together, our results revealed that upregulation of PVT1 could promote mitochondrial dysfunction and inflammation of podocyte by modulating TRIM56, highlighting a potential novel therapeutic target for DKD.
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Affiliation(s)
- Zhimei Lv
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China
| | - Ziyang Wang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China
| | - Jinxiu Hu
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China
| | - Hong Su
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Bing Liu
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Yating Lang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Qun Yu
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Yue Liu
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Xiaoting Fan
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China
| | - Meilin Yang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Ning Shen
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China
| | - Dongdong Zhang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Xia Zhang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Rong Wang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China.
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China.
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12
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Das Gupta A, Park J, Sorrells JE, Kim H, Krawczynska N, Pradeep D, Wang Y, Vidana Gamage HE, Nelczyk AT, Boppart SA, Boppart MD, Nelson ER. 27-Hydroxycholesterol Enhances Secretion of Extracellular Vesicles by ROS-Induced Dysregulation of Lysosomes. Endocrinology 2024; 165:bqae127. [PMID: 39298675 PMCID: PMC11448339 DOI: 10.1210/endocr/bqae127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 08/30/2024] [Accepted: 09/17/2024] [Indexed: 09/22/2024]
Abstract
Extracellular vesicles (EVs) serve as crucial mediators of cell-to-cell communication in normal physiology as well as in diseased states; they have been largely studied in regard to their role in cancer progression. However, the mechanisms by which their biogenesis and secretion are regulated by metabolic or endocrine factors remain unknown. Here, we delineate a mechanism by which EV secretion is regulated by a cholesterol metabolite, 27-hydroxycholesterol (27HC), where treatment of myeloid immune cells (RAW 264.7 and J774A.1) with 27HC impairs lysosomal homeostasis, leading to shunting of multivesicular bodies (MVBs) away from lysosomal degradation, toward secretion as EVs. This altered lysosomal function is likely caused by mitochondrial dysfunction and subsequent increase in reactive oxygen species (ROS). Interestingly, cotreatment with a mitochondria-targeted antioxidant rescued the lysosomal impairment and attenuated the 27HC-mediated increase in EV secretion. Overall, our findings establish how a cholesterol metabolite regulates EV secretion and paves the way for the development of strategies to regulate cancer progression by controlling EV secretion.
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Affiliation(s)
- Anasuya Das Gupta
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Jaena Park
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Janet E Sorrells
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Hannah Kim
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Natalia Krawczynska
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Dhanya Pradeep
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Yu Wang
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Hashni Epa Vidana Gamage
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Adam T Nelczyk
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Stephen A Boppart
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Interdisciplinary Health Sciences Institute, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- NIH/NIBIB Center for Label-free Imaging and Multi-scale Biophotonics (CLIMB), University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Marni D Boppart
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
| | - Erik R Nelson
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Carl R. Woese Institute for Genomic Biology- Anticancer Discovery from Pets to People, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
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13
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Meng D, Chang M, Dai X, Kuang Q, Wang G. GTPBP8 mitigates nonalcoholic steatohepatitis (NASH) by depressing hepatic oxidative stress and mitochondrial dysfunction via PGC-1α signaling. Free Radic Biol Med 2024:S0891-5849(24)00691-9. [PMID: 39341301 DOI: 10.1016/j.freeradbiomed.2024.09.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2024] [Revised: 09/15/2024] [Accepted: 09/25/2024] [Indexed: 10/01/2024]
Abstract
Nonalcoholic steatohepatitis (NASH) is emerging as a major cause of liver transplantation and hepatocellular carcinoma (HCC). Regrettably, its pathological mechanisms are still not fully comprehended. GTP-binding protein 8 (GTPBP8), belonging to the GTP-binding protein superfamily, assumes a crucial role in RNA metabolism, cell proliferation, differentiation, and signal transduction. Its aberrant expression is associated with oxidative stress and mitochondrial dysfunctions. Nevertheless, its specific functions and mechanisms of action, particularly in NASH, remain elusive. In our current study, we initially discovered that human hepatocytes L02 displayed evident mitochondrial respiratory anomaly, mitochondrial damage, and dysfunction upon treatment with palmitic acids and oleic acids (PO), accompanied by significantly reduced GTPBP8 expression levels through RNA-Seq, RT-qPCR, western blotting, and immunofluorescence assays. We then demonstrated that GTPBP8 overexpression mediated by adenovirus vector (Ad-GTPBP8) markedly attenuate lipid accumulation, inflammatory response, and mitochondrial impair and dysfunction in hepatocytes stimulated by PO. Conversely, adenovirus vector-mediated GTPBP8 knockdown (Ad-shGTPBP8) significantly accelerated lipid deposition, inflammation and mitochondrial damage in PO-treated hepatocytes in vitro. Furthermore, we constructed an in vivo NASH murine model by giving a 16-week high fat high cholesterol diet (HFHC) diet to hepatocyte specific GTPBP8-knockout (GTPBP8HKO) mice. We firstly found that HFHC feeding led to metabolic disorder in mice, including high body weight, blood glucose and insulin levels, and liver dysfunctions, which were accelerated in these NASH mice with GTPBP8 deficiency in hepatocytes. Consistently, GTPBP8HKO remarkably exacerbated the progression of NASH phenotypes induced by HFHC, as proved by the anabatic lipid accumulation, inflammation, fibrosis and reactive oxygen species (ROS) production in liver tissues, which could be largely attributed to the severe mitochondrial damage and dysfunction. Mechanistically, we further identified that GTPBP8 interacted with peroxisome proliferator-activated receptor γ coactivator 1α (PGC-1α) in hepatocytes. Importantly, the hepaprotective effects of GTPBP8 against mitochondrial dysfunction, oxidative stress and inflammation was largely dependent on PGC-1α expression. Collectively, GTPBP8 may exert a protective role in the progression of NASH, and targeting the GTPBP8/PGC-1α axis may represent a potential strategy for NASH treatment by improving mitochondrial functions.
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Affiliation(s)
- Dongxiao Meng
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Minghui Chang
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China
| | - Xianling Dai
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, PR China
| | - Qin Kuang
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, PR China
| | - Guangchuan Wang
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, PR China.
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14
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Li X, He Y, Yan Q, Kuai D, Zhang H, Wang Y, Wang K, Tian W. Dihydrotestosterone induces reactive oxygen species accumulation and mitochondrial fission leading to apoptosis of granulosa cells. Toxicology 2024; 509:153958. [PMID: 39332622 DOI: 10.1016/j.tox.2024.153958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 09/15/2024] [Accepted: 09/22/2024] [Indexed: 09/29/2024]
Abstract
Dihydrotestosterone (DHT), which has significant androgenic activity,is a major player in follicle development and ovary function in females. However, an excess of androgens may result in increased follicular apoptosis with adverse effects on female fertility. This study aimed to explore the mechanism by which DHT induces apoptosis in human ovarian granulosa cells (GCs). The association between DHT and GC apoptosis was explored by the construction of rat models of polycystic ovary syndrome (PCOS). It was found that serum DHT levels were negatively correlated with thickness of the GC layer in PCOS model rats (R2=0.8342, p<0.0001), compared with control rats, together with significant increases in cofactors (Fis1: p=0.008; MFF: p=0.044). The GC SVOG cell line was used to clarify the mechanism by which DHT influenced GC apoptosis in in vitro experiments. The results confirmed that apoptosis in SVOG cells was positively associated with the DHT dose. The expression of the autophagy-related proteins LC3A/B (p=0.027) and the proapoptotic protein Bax (p=0.0095) were increased, while that of the anti-apoptotic protein Bcl-2 (p=0.0005) was decreased in the high-dose DHT group. ROS levels were significantly increased (p=0.0237) and the mitochondrial membrane potential ΔΨm was decreased (p=0.0194). Moreover, ultrastructural analysis of the mitochondria indicated significant damage. The results of RT-qPCR and western blotting showed that two fission cofactor-Fis1(p=0.034) and MFF (p=0.039) were significantly increased after treatment with high doses of DHT. Even though the overall expression of Drp1 did not change significantly (p=0.5961), that of activated Phosphor-Drp1(Ser616) was significantly increased (p=0.046), while the expression of Phosphor-Drp1 (Ser637) was markedly reduced (p=0.007) following exposure to high concentrations of DHT. All these effects could be reversed by the Drp1 inhibitor Mdivi-1. These findings indicated the impact of DHT on ROS aggregation and mitochondrial fission, resulting in GC apoptosis. An imbalance in Drp1 phosphorylation may be the key link in DHT-induced excessive mitochondrial fission.
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Affiliation(s)
- Xiaoyan Li
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China; Department of Gynecology and Obstetrics, Tianjin Key Laboratory of Female Reproductive Health and Eugenic, Tianjin Medical University General Hospital, Tianjin, China
| | - Ying He
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China; Department of Gynecology and Obstetrics, Tianjin Key Laboratory of Female Reproductive Health and Eugenic, Tianjin Medical University General Hospital, Tianjin, China
| | - Qi Yan
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China; Department of Gynecology and Obstetrics, Tianjin Key Laboratory of Female Reproductive Health and Eugenic, Tianjin Medical University General Hospital, Tianjin, China
| | - Dan Kuai
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China; Department of Gynecology and Obstetrics, Tianjin Key Laboratory of Female Reproductive Health and Eugenic, Tianjin Medical University General Hospital, Tianjin, China
| | - Huiying Zhang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China; Department of Gynecology and Obstetrics, Tianjin Key Laboratory of Female Reproductive Health and Eugenic, Tianjin Medical University General Hospital, Tianjin, China
| | - Yingmei Wang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China; Department of Gynecology and Obstetrics, Tianjin Key Laboratory of Female Reproductive Health and Eugenic, Tianjin Medical University General Hospital, Tianjin, China
| | - Kan Wang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China; Department of Gynecology and Obstetrics, Tianjin Key Laboratory of Female Reproductive Health and Eugenic, Tianjin Medical University General Hospital, Tianjin, China.
| | - Wenyan Tian
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China; Department of Gynecology and Obstetrics, Tianjin Key Laboratory of Female Reproductive Health and Eugenic, Tianjin Medical University General Hospital, Tianjin, China.
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15
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Gu S, Lu F, Gao Z, Zhou Y, Xiao Y, Bao W, Wang H. Transcriptomics and metabolomics analyses of graphene oxide toxicity on porcine alveolar macrophages. Toxicology 2024; 509:153953. [PMID: 39265697 DOI: 10.1016/j.tox.2024.153953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 09/05/2024] [Accepted: 09/10/2024] [Indexed: 09/14/2024]
Abstract
Graphene oxide (GO) is a type of nanomaterial widely used in tissue engineering, photocatalysis, and biomedicine. GO has been found to produce adverse effects on a broad range of cells and tissues. However, the molecular mechanisms underlying GO toxicity still remain to be explored. In this study, using porcine alveolar macrophages as a study model, we explored the toxic effects of GO and performed genome-wide detection of genes and metabolites associated with GO exposure using RNA-seq and liquid chromatograph mass spectrometer techniques. GO exposure significantly inhibited cell viability and induced apoptosis and oxidative stress in porcine alveolar macrophages. Further, GO exposure promoted cellular inflammation by upregulating the expression of pro-inflammatory cytokines (IL-6, IL-8, and IL-12). Transcriptomic analysis of GO-exposed cells revealed 424 differentially expressed genes. Functional enrichment analysis showed that the differentially expressed genes were significantly enriched in the pathways of Ribosome and oxidative phosphorylation (OXPHOS). In addition, metabolic analysis identified 203 differential metabolites, and these metabolites were significantly enriched in biosynthesis of cofactors, purine metabolism, and nucleotide metabolism. Integrative analyses of transcriptome and metabolome showed that OXPHOS was the most significantly enriched pathway and the involved genes were downregulated. This study revealed the toxic effects of GO on porcine alveolar macrophages and provided global insights to the metabolomic and transcriptomic alterations related to GO exposure. The results contributed to our understanding of the molecular mechanism of GO, and may further promote the detection of biomarkers for the prediction and control of GO toxicity.
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Affiliation(s)
- Shanshen Gu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Fan Lu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Zhongcheng Gao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yajing Zhou
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yeyi Xiao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Wenbin Bao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, China
| | - Haifei Wang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, China.
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16
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Zhang Y, Yu C, Peng C, Peng F. Potential Roles and Mechanisms of Curcumin and its Derivatives in the Regulation of Ferroptosis. Int J Biol Sci 2024; 20:4838-4852. [PMID: 39309443 PMCID: PMC11414380 DOI: 10.7150/ijbs.90798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 08/25/2024] [Indexed: 09/25/2024] Open
Abstract
Ferroptosis is a recently discovered iron-dependent mode of oxidatively regulated cell death. It is not only associated with a wide range of diseases, but it is also a key component of many signaling pathways. In general, ferroptosis is a double-edged sword. On one hand, it induces nonapoptotic destruction of cancer cells, but on the other, it may lead to organ damage. Therefore, ferroptosis can be drug-targeted as a novel means of therapy. The properties of curcumin have been known for many years. It has a positive impact on the treatment of diseases such as cancer and inflammation. In this review, we focus on the regulation of ferroptosis by curcumin and its derivatives and review the main mechanisms by which curcumin affects ferroptosis. In conclusion, curcumin is a ferroptosis inducer with excellent anticancer efficacy, although it also exhibits organ protective and reparative effects by acting as a ferroptosis inhibitor. The differential regulation of ferroptosis by curcumin may be related to dose and cell type.
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Affiliation(s)
- Yuan Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Chenghao Yu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Fu Peng
- Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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17
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Thapak P, Gomez-Pinilla F. The bioenergetics of traumatic brain injury and its long-term impact for brain plasticity and function. Pharmacol Res 2024; 208:107389. [PMID: 39243913 DOI: 10.1016/j.phrs.2024.107389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 08/19/2024] [Accepted: 08/28/2024] [Indexed: 09/09/2024]
Abstract
Mitochondria provide the energy to keep cells alive and functioning and they have the capacity to influence highly complex molecular events. Mitochondria are essential to maintain cellular energy homeostasis that determines the course of neurological disorders, including traumatic brain injury (TBI). Various aspects of mitochondria metabolism such as autophagy can have long-term consequences for brain function and plasticity. In turn, mitochondria bioenergetics can impinge on molecular events associated with epigenetic modifications of DNA, which can extend cellular memory for a long time. Mitochondrial dysfunction leads to pathological manifestations such as oxidative stress, inflammation, and calcium imbalance that threaten brain plasticity and function. Hence, targeting mitochondrial function may have great potential to lessen the outcomes of TBI.
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Affiliation(s)
- Pavan Thapak
- Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095, USA
| | - Fernando Gomez-Pinilla
- Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095, USA; Department of Neurosurgery, UCLA Brain Injury Research Center, University of California, Los Angeles, CA 90095, USA.
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18
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Lin L, Liao ZH, Li CQ. Insight into the role of mitochondrion-related gene anchor signature in mitochondrial dysfunction of neutrophilic asthma. J Asthma 2024; 61:912-929. [PMID: 38294718 DOI: 10.1080/02770903.2024.2311241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/09/2024] [Accepted: 01/23/2024] [Indexed: 02/01/2024]
Abstract
OBJECTIVE At present, targeting molecular-pharmacological therapy is still difficult in neutrophilic asthma. The investigation aims to identify and validate mitochondrion-related gene signatures for diagnosis and specific targeting therapeutics in neutrophilic asthma. METHODS Bronchial biopsy samples of neutrophilic asthma and healthy people were identified from the GSE143303 dataset and then matched with human mitochondrial gene data to obtain mitochondria-related differential genes (MitoDEGs). Signature mitochondria-related diagnostic markers were jointly screened by support vector machine (SVM) analysis, least absolute shrinkage, and selection operator (LASSO) regression. The expression of marker MitoDEGs was evaluated by validation datasets GSE147878 and GSE43696. The diagnostic value was evaluated by receiver operating characteristic (ROC) curve analysis. Meanwhile, the infiltrating immune cells were analyzed by the CIBERSORT. Finally, oxidative stress level and mitochondrial functional morphology for asthmatic mice and BEAS-2B cells were evaluated. The expression of signature MitoDEGs was verified by qPCR. RESULTS 67 MitoDEGs were identified. Five signature MitoDEGs (SOD2, MTHFD2, PPTC7, NME6, and SLC25A18) were further screened out. The area under the curve (AUC) of signature MitoDEGs presented a good diagnostic performance (more than 0.9). There were significant differences in the expression of signature MitoDEGs between neutrophilic asthma and non-neutrophilic asthma. In addition, the basic features of mitochondrial dysfunction were demonstrated by in vitro and in vivo experiments. The expression of signature MitoDEGs in the neutrophilic asthma mice presented a significant difference from the control group. CONCLUSIONS These MitoDEGs signatures in neutrophilic asthma may hold potential as anchor diagnostic and therapeutic targets in neutrophilic asthma.
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Affiliation(s)
- Lu Lin
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Province, People's Republic of China
| | - Zeng-Hua Liao
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Province, People's Republic of China
| | - Chao-Qian Li
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Province, People's Republic of China
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19
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Zhong Y, Xia S, Wang G, Liu Q, Ma F, Yu Y, Zhang Y, Qian L, Hu L, Xie J. The interplay between mitophagy and mitochondrial ROS in acute lung injury. Mitochondrion 2024; 78:101920. [PMID: 38876297 DOI: 10.1016/j.mito.2024.101920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/27/2024] [Accepted: 06/11/2024] [Indexed: 06/16/2024]
Abstract
Mitochondria orchestrate the production of new mitochondria and the removal of damaged ones to dynamically maintain mitochondrial homeostasis through constant biogenesis and clearance mechanisms. Mitochondrial quality control particularly relies on mitophagy, defined as selective autophagy with mitochondria-targeting specificity. Most ROS are derived from mitochondria, and the physiological concentration of mitochondrial ROS (mtROS) is no longer considered a useless by-product, as it has been proven to participate in immune and autophagy pathway regulation. However, excessive mtROS appears to be a pathogenic factor in several diseases, including acute lung injury (ALI). The interplay between mitophagy and mtROS is complex and closely related to ALI. Here, we review the pathways of mitophagy, the intricate relationship between mitophagy and mtROS, the role of mtROS in the pathogenesis of ALI, and their effects and related progression in ALI induced by different conditions.
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Affiliation(s)
- Yizhi Zhong
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No.3 East Qingchun Road, Jianggan District, Hangzhou 310016, China
| | - Siwei Xia
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No.3 East Qingchun Road, Jianggan District, Hangzhou 310016, China
| | - Gaojian Wang
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No.3 East Qingchun Road, Jianggan District, Hangzhou 310016, China
| | - Qinxue Liu
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No.3 East Qingchun Road, Jianggan District, Hangzhou 310016, China
| | - Fengjie Ma
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No.3 East Qingchun Road, Jianggan District, Hangzhou 310016, China
| | - Yijin Yu
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No.3 East Qingchun Road, Jianggan District, Hangzhou 310016, China
| | - Yaping Zhang
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No.3 East Qingchun Road, Jianggan District, Hangzhou 310016, China
| | - Lu Qian
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No.3 East Qingchun Road, Jianggan District, Hangzhou 310016, China
| | - Li Hu
- Department of Anesthesiology, Second Affiliated Hospital of Jiaxing University, No.1518 North Huancheng Road, Nanhu District, Jiaxing 314000, China
| | - Junran Xie
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, No.3 East Qingchun Road, Jianggan District, Hangzhou 310016, China.
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20
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Danylovych HV, Danylovych YV, Pavliuk MR, Kosterin SO. Products of oxidative and non-oxidative metabolism of L-arginine as potential regulators of Ca 2+ transport in mitochondria of uterine smooth muscle. Biochim Biophys Acta Gen Subj 2024; 1868:130652. [PMID: 38857773 DOI: 10.1016/j.bbagen.2024.130652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/15/2024] [Accepted: 06/04/2024] [Indexed: 06/12/2024]
Abstract
Mitochondria play a crucial role in maintaining Ca2+ homeostasis in cells. Due to the critical regulatory role of the products of oxidative and non-oxidative metabolism of L-arginine, it is essential to clarify their effect on Ca2+ transport in smooth muscle mitochondria. Experiments were performed on the uterine myocytes of rats and isolated mitochondria. The possibility of NO synthesis by mitochondria was demonstrated by confocal microscopy and spectrofluorimetry methods using the NO-sensitive fluorescent probe DAF-FM and Mitotracker Orange CM-H2TMRos. It was shown that 50 μM L-arginine stimulates the energy-dependent accumulation of Ca2+ in mitochondria using the fluorescent probe Fluo-4 AM. A similar effect occurred when using nitric oxide donors 100 μM SNP, SNAP, and sodium nitrite (SN) directly. The stimulating effect was eliminated in the presence of the NO scavenger C-PTIO. Nitric oxide reduces the electrical potential in mitochondria without causing them to swell. The stimulatory effect of spermine on the accumulation of Ca2+ by mitochondria is attributed to the enhancement of NO synthesis, which was demonstrated with the use of C-PTIO, NO-synthase inhibitors (100 μM NA and L-NAME), as well as by direct monitoring of NO synthesis fluorescent probe DAF-FM. A conclusion was drawn about the potential regulatory effect of the product of the oxidative metabolism of L-arginine - NO on the transport of Ca2+ in the mitochondria of the myometrium, as well as the corresponding effect of the product of non-oxidative metabolism -spermine by increasing the synthesis of NO in these subcellular structures.
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Affiliation(s)
- Hanna V Danylovych
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine.
| | - Yuriy V Danylovych
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Maksym R Pavliuk
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Sergiy O Kosterin
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
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21
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Guo L, Li P, Jing Z, Gong Y, Lai K, Fu H, Dong H, Yang Z, Liu Z. Iminoamido chelated iridium(III) and ruthenium(II) anticancer complexes with mitochondria-targeting ability and potential to overcome cisplatin resistance. J Inorg Biochem 2024; 258:112631. [PMID: 38843774 DOI: 10.1016/j.jinorgbio.2024.112631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 05/27/2024] [Accepted: 05/31/2024] [Indexed: 07/01/2024]
Abstract
A diverse set of neutral half-sandwich iminoamido iridium and ruthenium organometallic complexes is synthesized through the utilization of Schiff base pro-ligands with N˄N donors. Notably, these metal complexes with varying leaving groups (Cl- or OAc-) are formed by employing different quantities of the deprotonating agent NaOAc, and exhibit promising cytotoxicity against various cancer cell lines such as A549 and cisplatin-resistant A549/DDP lung cancer cells, as well as HeLa cells, with IC50 values spanning from 9.26 to 15.98 μM. Cytotoxicity and anticancer selectivity (SI: 1.9-2.4) of these metal complexes remain unaffected by variations in the metal center, leaving group, and ligand substitution. Further investigations reveal that these metal complexes specifically target mitochondria, leading to the depolarization of the mitochondrial membrane and instigating the production of intracellular reactive oxygen species. Furthermore, the metal complexes are found to induce late apoptosis and disrupt the cell cycle, leading to G2/M cell cycle arrest specifically in A549 cancer cells. In light of these findings, it is evident that the primary mechanism contributing to the anticancer effectiveness of these metal complexes is the redox pathway.
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Affiliation(s)
- Lihua Guo
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, Institute of Anticancer Agents Development and Theranostic Application, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, PR China.
| | - Pengwei Li
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, Institute of Anticancer Agents Development and Theranostic Application, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, PR China
| | - Zhihong Jing
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, Institute of Anticancer Agents Development and Theranostic Application, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, PR China
| | - Yuwen Gong
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, Institute of Anticancer Agents Development and Theranostic Application, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, PR China
| | - Kangning Lai
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, Institute of Anticancer Agents Development and Theranostic Application, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, PR China
| | - Hanxiu Fu
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, Institute of Anticancer Agents Development and Theranostic Application, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, PR China
| | - Heqian Dong
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, Institute of Anticancer Agents Development and Theranostic Application, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, PR China
| | - Zhihao Yang
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, Institute of Anticancer Agents Development and Theranostic Application, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, PR China
| | - Zhe Liu
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, Institute of Anticancer Agents Development and Theranostic Application, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, PR China.
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22
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Zeng X, Chen W, Yu N, Li Z, Li H, Chen Y, Gong F, Jiang X, Ji G. Trifluoperazine exerts anti-osteosarcoma effect by inducing mitochondria-dependent apoptosis via AKT/TXNIP signaling pathway. Toxicol Appl Pharmacol 2024; 492:117080. [PMID: 39216834 DOI: 10.1016/j.taap.2024.117080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 08/18/2024] [Accepted: 08/26/2024] [Indexed: 09/04/2024]
Abstract
The survival rates for patients with osteosarcoma (OS) have stagnated over the past few decades. It is essential to find new therapies and drugs. A licensed antipsychotic medication called trifluoperazine (TFP) significantly reduces the growth of several cancers. However, the exact molecular pathways of TFP in OS remain to be discovered. Our research revealed that TFP greatly reduced OS cell migration and growth and caused the arrest of G0/G1 cell cycle. Combined with RNA-Seq data and further research, we confirmed that TFP promoted reactive oxygen species (ROS) production by elevating thioredoxin binding protein (TXNIP) expression to induce mitochondria-dependent apoptosis. Interestingly, we first demonstrated that AKT was an upstream regulatory target of TXNIP in OS cells. Dephosphorylation of AKT led to an increase in TXNIP expression, further elucidating the anticancer mechanism of TFP. In vivo, TFP inhibited subcutaneous OS cell proliferation and induced OS cell apoptosis without noticeable side effects. In conclusion, our findings imply that TFP is a potential treatment for OS.
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Affiliation(s)
| | - Wenkai Chen
- School of Medicine, Xiamen University, Xiamen, China
| | - Naichun Yu
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Zongguang Li
- Department of Orthopedic Surgery, Xiamen Hospital of Traditional Chinese Medicine, Xiamen, China
| | - Hongyu Li
- School of Medicine, Xiamen University, Xiamen, China
| | - Yongjie Chen
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Fengqing Gong
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Xing Jiang
- Department of Neurosurgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Guangrong Ji
- Department of Orthopedic Surgery, Xiamen Hospital of Traditional Chinese Medicine, Xiamen, China.
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23
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Darawsha A, Trachtenberg A, Sharoni Y. ARE/Nrf2 Transcription System Involved in Carotenoid, Polyphenol, and Estradiol Protection from Rotenone-Induced Mitochondrial Oxidative Stress in Dermal Fibroblasts. Antioxidants (Basel) 2024; 13:1019. [PMID: 39199263 PMCID: PMC11351643 DOI: 10.3390/antiox13081019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 08/15/2024] [Accepted: 08/19/2024] [Indexed: 09/01/2024] Open
Abstract
Skin aging is associated with the increased production of mitochondrial reactive oxygen species (mtROS) due to mitochondrial dysfunction, and various phytonutrients and estrogens have been shown to improve skin health. Thus, the aim of the current study was to examine damage to dermal fibroblasts by chemically induced mitochondrial dysfunction and to study the mechanism of the protective effects of carotenoids, polyphenols, and estradiol. Rotenone, a Complex I inhibitor, caused mitochondrial dysfunction in human dermal fibroblasts, substantially reducing respiration and ATP levels, followed by increased mitochondrial and cytosolic ROS, which resulted in apoptotic cell death, an increased number of senescent cells, increased matrix metalloproteinase-1 (MMP1) secretion, and decreased collagen secretion. Pre-treatment with carotenoid-rich tomato extracts, rosemary extract, and estradiol reversed these effects. These protective effects can be partially explained by a cooperative activation of antioxidant response element (ARE/Nrf2) transcriptional activity by the protective compounds and rotenone, which led to the upregulation of antioxidant proteins such as NQO1. To determine if ARE/Nrf2 activity is crucial for cell protection, we inhibited it using the Nrf2 inhibitors ML385 and ochratoxin A. This inhibition markedly reduced the protective effects of the test compounds by diminishing their effect to reduce cytosolic ROS. Our study results indicate that phytonutrients and estradiol protect skin cells from damage caused by mtROS, and thus may delay skin cell senescence and improve skin health.
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Affiliation(s)
| | | | - Yoav Sharoni
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 8410500, Israel; (A.D.); (A.T.)
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24
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Xu L, Mi Y, Meng Q, Liu Y, Wang Y, Zhang Y, Yang Y, Chen G, Liu Y, Hou Y. A quinolinyl resveratrol derivative alleviates acute ischemic stroke injury by promoting mitophagy for neuroprotection via targeting CK2α'. Int Immunopharmacol 2024; 137:112524. [PMID: 38909494 DOI: 10.1016/j.intimp.2024.112524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 06/13/2024] [Accepted: 06/16/2024] [Indexed: 06/25/2024]
Abstract
Ischemic stroke (IS) is a serious threat to human health. The naturally derived small molecule (E)-5-(2-(quinolin-4-yl) ethenyl) benzene-1,3-diol (RV01) is a quinolinyl analog of resveratrol with great potential in the treatment of IS. The aim of this study was to investigate the potential mechanisms and targets for the protective effect of the RV01 on IS. The mouse middle cerebral artery occlusion and reperfusion (MCAO/R) and oxygen-glucose deprivation and reperfusion (OGD/R) models were employed to evaluate the effects of RV01 on ischemic injury and neuroprotection. RV01 was found to significantly increase the survival of SH-SY5Y cells and prevent OGD/R-induced apoptosis in SH-SY5Y cells. Furthermore, RV01 reduced oxidative stress and mitochondrial damage by promoting mitophagy in OGD/R-exposed SH-SY5Y cells. Knockdown of CK2α' abolished the RV01-mediated promotion on mitophagy and alleviation on mitochondrial damage as well as neuronal injury after OGD/R. These results were further confirmed by molecular docking, drug affinity responsive target stability and cellular thermal shift assay analysis. Importantly, in vivo study showed that treatment with the CK2α' inhibitor CX-4945 abolished the RV01-mediated alleviation of cerebral infarct volume, brain edema, cerebral blood flow and neurological deficit in MCAO/R mice. These data suggest that RV01 effectively reduces damage caused by acute ischemic stroke by promoting mitophagy through its interaction with CK2α'. These findings offer valuable insights into the underlying mechanisms through which RV01 exerts its therapeutic effects on IS.
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Affiliation(s)
- Libin Xu
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, China
| | - Yan Mi
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, China
| | - Qingqi Meng
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, China
| | - Yeshu Liu
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, China
| | - Yongping Wang
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, China
| | - Ying Zhang
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, China
| | - Yuxin Yang
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, China
| | - Guoliang Chen
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, China.
| | - Yueyang Liu
- Shenyang Key Laboratory of Vascular Biology, Science and Research Center, Department of Pharmacology, Shenyang Medical College, Shenyang, China.
| | - Yue Hou
- Key Laboratory of Bioresource Research and Development of Liaoning Province, College of Life and Health Sciences, National Frontiers Science Center for Industrial Intelligence and Systems Optimization, Key Laboratory of Data Analytics and Optimization for Smart Industry, Ministry of Education, Northeastern University, Shenyang, China.
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25
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Bonetti L, Horkova V, Grusdat M, Longworth J, Guerra L, Kurniawan H, Franchina DG, Soriano-Baguet L, Binsfeld C, Verschueren C, Spath S, Ewen A, Koncina E, Gérardy JJ, Kobayashi T, Dostert C, Farinelle S, Härm J, Fan YT, Chen Y, Harris IS, Lang PA, Vasiliou V, Waisman A, Letellier E, Becher B, Mittelbronn M, Brenner D. A Th17 cell-intrinsic glutathione/mitochondrial-IL-22 axis protects against intestinal inflammation. Cell Metab 2024; 36:1726-1744.e10. [PMID: 38986617 DOI: 10.1016/j.cmet.2024.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 02/06/2024] [Accepted: 06/12/2024] [Indexed: 07/12/2024]
Abstract
The intestinal tract generates significant reactive oxygen species (ROS), but the role of T cell antioxidant mechanisms in maintaining intestinal homeostasis is poorly understood. We used T cell-specific ablation of the catalytic subunit of glutamate cysteine ligase (Gclc), which impaired glutathione (GSH) production, crucially reducing IL-22 production by Th17 cells in the lamina propria, which is critical for gut protection. Under steady-state conditions, Gclc deficiency did not alter cytokine secretion; however, C. rodentium infection induced increased ROS and disrupted mitochondrial function and TFAM-driven mitochondrial gene expression, resulting in decreased cellular ATP. These changes impaired the PI3K/AKT/mTOR pathway, reducing phosphorylation of 4E-BP1 and consequently limiting IL-22 translation. The resultant low IL-22 levels led to poor bacterial clearance, severe intestinal damage, and high mortality. Our findings highlight a previously unrecognized, essential role of Th17 cell-intrinsic GSH in promoting mitochondrial function and cellular signaling for IL-22 protein synthesis, which is critical for intestinal integrity and defense against gastrointestinal infections.
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Affiliation(s)
- Lynn Bonetti
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Veronika Horkova
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Melanie Grusdat
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Joseph Longworth
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Luana Guerra
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Henry Kurniawan
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Davide G Franchina
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Leticia Soriano-Baguet
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Carole Binsfeld
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Charlène Verschueren
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Sabine Spath
- Institute of Experimental Immunology, Inflammation Research, University of Zurich, 8057 Zurich, Switzerland; Center for Fundamental Immunology, Benaroya Research Institute, Seattle, WA 98101, USA
| | - Anouk Ewen
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Eric Koncina
- Molecular Disease Mechanisms Group, Department of Life Sciences and Medicine, University of Luxembourg, Belval, Luxembourg
| | - Jean-Jacques Gérardy
- National Center of Pathology (NCP), Laboratoire National de Santé (LNS), Dudelange, Luxembourg; Luxembourg Center of Neuropathology (LCNP), 3555 Dudelange, Luxembourg
| | - Takumi Kobayashi
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Catherine Dostert
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Sophie Farinelle
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Janika Härm
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Yu-Tong Fan
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg
| | - Ying Chen
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Isaac S Harris
- Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Philipp A Lang
- Department of Molecular Medicine II, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Ari Waisman
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Elisabeth Letellier
- Molecular Disease Mechanisms Group, Department of Life Sciences and Medicine, University of Luxembourg, Belval, Luxembourg
| | - Burkhard Becher
- Institute of Experimental Immunology, Inflammation Research, University of Zurich, 8057 Zurich, Switzerland
| | - Michel Mittelbronn
- National Center of Pathology (NCP), Laboratoire National de Santé (LNS), Dudelange, Luxembourg; Luxembourg Center of Neuropathology (LCNP), 3555 Dudelange, Luxembourg; Department of Life Sciences and Medicine (DLSM), University of Luxembourg, Esch-sur-Alzette, Luxembourg; Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 4362 Esch-sur-Alzette, Luxembourg; Faculty of Science, Technology and Medicine (FSTM), University of Luxembourg, Esch-sur-Alzette, Luxembourg; Department of Cancer Research (DoCR), Luxembourg Institute of Health (LIH), 1526 Luxembourg, Luxembourg
| | - Dirk Brenner
- Experimental and Molecular Immunology, Department of Infection and Immunity (DII), Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; Immunology & Genetics, Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, 7, Avenue des Hauts Fourneaux, Esch-sur-Alzette, Luxembourg; Odense Research Center for Anaphylaxis (ORCA), Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark.
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Song J, Feng Y, Yan J, Wang Y, Yan W, Yang N, Wu T, Liu S, Wang Y, Zheng N, He L, Zhang Y. Computed Tomography Imaging Guided Microenvironment-Responsive Ir@WO 3-x Dual-Catalytic Nanoreactor for Selective Radiosensitization. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2405192. [PMID: 39102342 DOI: 10.1002/advs.202405192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 07/28/2024] [Indexed: 08/07/2024]
Abstract
Radiotherapy (RT) is often administered, either alone or in combination with other therapies, for most malignancies. However, the degree of tumor oxygenation, damage to adjacent healthy tissues, and inaccurate guidance remain issues that result in discontinuation or failure of RT. Here, a multifunctional therapeutic platform based on Ir@WO3-x is developed which simultaneously addresses these critical issues above for precision radiosensitization. Ir@WO3-x nanoreactors exhibit strong absorption of X-ray, acting as radiosensitizers. Moreover, ultrasmall Ir enzyme-mimic nanocrystals (NCs) are decorated onto the surface of the nanoreactor, where NCs have catalyst-like activity and are sensitive to H2O2 in the tumor microenvironment (TME) under near infrared-II (NIR-II) light stimulation. They efficiently catalyze the conversion of H2O2 to O2, thereby ameliorating hypoxia, inhibiting the expression of HIF-1α, and enhancing RT-induced DNA damage in cancerous tissue, further improving the efficiency of RT. Additionally, in response to high H2O2 levels in TME, the Ir@WO3-x nanoreactor also exerts peroxidase-like activity, boosting exogenous ROS, which increases oxidative damage and enhances ROS-dependent death signaling. Furthermore, Ir@WO3-x can serve as a high-quality computed tomography contrast agent due to its high X-ray attenuation coefficient and generation of pronounced tumor-tissue contrast. This report highlights the potential of advanced health materials to enhance precision therapeutic modalities.
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Affiliation(s)
- Jiayu Song
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin, 150001, China
- School of Medicine and Health, Key Laboratory of Microsystems and Microstructures Manufacturing, Harbin Institute of Technology, Harbin, 150001, China
| | - Yue Feng
- Department of Gynecological Oncology, Zhejiang Cancer Hospital, Zhengzhou, Zhejiang, 310022, China
| | - Jiazhuo Yan
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin, 150001, China
| | - Ying Wang
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin, 150001, China
| | - Weixiao Yan
- School of Medicine and Health, Key Laboratory of Microsystems and Microstructures Manufacturing, Harbin Institute of Technology, Harbin, 150001, China
| | - Nan Yang
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin, 150001, China
| | - Tusheng Wu
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin, 150001, China
| | - Sijia Liu
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin, 150001, China
| | - Yuan Wang
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin, 150001, China
| | - Nannan Zheng
- School of Medicine and Health, Key Laboratory of Microsystems and Microstructures Manufacturing, Harbin Institute of Technology, Harbin, 150001, China
- Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou, Henan, 450000, China
| | - Liangcan He
- School of Medicine and Health, Key Laboratory of Microsystems and Microstructures Manufacturing, Harbin Institute of Technology, Harbin, 150001, China
- Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou, Henan, 450000, China
| | - Yunyan Zhang
- Department of Gynecological Radiotherapy, Harbin Medical University Cancer Hospital, Harbin, 150001, China
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Tan S, Yuan C, Zhu Y, Chang S, Li Q, Ding J, Gao X, Tian R, Han Z, Hu Z. Glutathione hybrid poly (beta-amino ester)-plasmid nanoparticles for enhancing gene delivery and biosafety. J Adv Res 2024:S2090-1232(24)00321-7. [PMID: 39097089 DOI: 10.1016/j.jare.2024.07.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 07/26/2024] [Accepted: 07/31/2024] [Indexed: 08/05/2024] Open
Abstract
INTRODUCTION CRISPR/Cas9 gene editing technology has significantly advanced gene therapy, with gene vectors being one of the key factors for its success. Poly (beta-amino ester) (PBAE), a distinguished non-viral cationic gene vector, is known to elevate intracellular reactive oxygen species (ROS) levels, which may cause cytotoxicity and, consequently, impact gene transfection efficacy (T.E.). OBJECTIVES To develop a simple but efficient strategy to improve the gene delivery ability and biosafety of PBAE both in vivo and in vitro. METHODS We used glutathione (GSH), a clinically utilized drug with capability to modulating intracellular ROS level, to prepare a hybrid system with PBAE-plasmid nanoparticles (NPs). This system was characterized by flow cytometry, RNA-seq, Polymerase Chain Reaction (PCR) and Sanger sequencing in vitro, and its safety and efficacy in vivo was evaluated by imaging, PCR, Sanger sequencing and histology analysis. RESULTS The particle size of GSH-PBAE-plasmid NPs were 168.31 nm with a ζ-potential of 15.21 mV. An enhancement in T.E. and gene editing efficiency, ranging from 10 % to 100 %, was observed compared to GSH-free PBAE-plasmid NPs in various cell lines. In vitro results proved that GSH-PBAE-plasmid NPs reduced intracellular ROS levels by 25 %-40 %, decreased the total number of upregulated/downregulated genes from 4,952 to 789, and significantly avoided the disturbance in gene expression related to cellular oxidative stress-response and cell growth regulation signaling pathway compared to PBAE-plasmid NPs. They also demonstrated lower impact on the cell cycle, slighter hemolysis, and higher cell viability after gene transfection. Furthermore, GSH hybrid PBAE-plasmid NPs exhibited superior safety and improved tumor suppression ability in an Epstein-Barr virus (EBV)-infected murine tumor model, via targeting cleavage the EBV related oncogene by delivering CRISPR/Cas9 gene editing system and down-regulating the expression levels. This simple but effective strategy is expected to promote clinical applications of non-viral vector gene delivery.
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Affiliation(s)
- Songwei Tan
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Caiyan Yuan
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; The First Hospital of Nanchang, Nanchang 330008, China
| | - Yuhe Zhu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | | | - Qianru Li
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jiahui Ding
- Generulor Co., Ltd., Zhuhai 519000, Guangdong, China
| | - Xueqin Gao
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Rui Tian
- Generulor Co., Ltd., Zhuhai 519000, Guangdong, China
| | - Zhiqiang Han
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Department of Obstetrics and Gynecology, Shanxi Bethune Hospital, Taiyuan 030032, China.
| | - Zheng Hu
- Department of Gynecologic Oncology, Women and Children's Hospital Affiliated to Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China; Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China; Hubei Key Laboratory of Tumor Biological Behaviors, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China; Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China.
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Liu C, Li X, Zhu H, Wang K, Rong X, Ma L, Zhang X, Liu M, Li W, Sheng W, Zhu B. A simple mitochondria-immobilized fluorescent probe for the detection of hydrogen peroxide. Talanta 2024; 275:126091. [PMID: 38678922 DOI: 10.1016/j.talanta.2024.126091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 04/07/2024] [Accepted: 04/08/2024] [Indexed: 05/01/2024]
Abstract
Hydrogen peroxide (H2O2), as one of reactive oxygen species (ROS) widely present in the human body, is involved in a variety of physiological activities. Many human diseases are associated with abnormal levels of H2O2 in the body. Mitochondria are the main organelles producing H2O2 in the human body, and monitoring the level of H2O2 in mitochondria can help to deepen the understanding of the detailed functions of H2O2 in physiological activities. However, due to the highly dynamic nature of the cells, real-time quantitative monitoring of H2O2 levels in mitochondria remains an ongoing challenge. Herein, a novel highly immobilized mitochondria-targeting fluorescent probe (QHCl) for detection of H2O2 was reasonably constructed based on quinolinium dye containing benzyl chloride moiety. Spectral experimental results demonstrated QHCl possessed outstanding selectivity toward H2O2 (λex/em = 380/513 nm). In addition, QHCl can quantitatively detect H2O2 in the concentration range of 0-20 μM with excellent sensitivity (LOD = 0.58 μM) under the PBS buffer solution (10 mM, pH = 7.4). Finally, bioimaging experiments demonstrated that the probe QHCl was able to be used for accurately detecting both endogenous and exogenous H2O2 in the mitochondria of living cells and zebrafish by its unique mitochondrial immobilization.
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Affiliation(s)
- Caiyun Liu
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China.
| | - Xinke Li
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Hanchuang Zhu
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Kun Wang
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Xiaodi Rong
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Lixue Ma
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Xiaohui Zhang
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Mengyuan Liu
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China
| | - Wenzhai Li
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250103, China
| | - Wenlong Sheng
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250103, China.
| | - Baocun Zhu
- School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China.
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Yang Y, Ge J, Zhong X, Liu L, Chen L, Lu S, Ren J, Chen Y, Sun S, Song Z, Cheng Y, Cheng L. Turning Waste into Wealth: A Potent Sono-Immune Strategy Based on Microcystis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2401974. [PMID: 38889229 DOI: 10.1002/adma.202401974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 06/16/2024] [Indexed: 06/20/2024]
Abstract
Currently, sonodynamic therapy (SDT) has limited therapeutic outcomes and immune responses, highlighting the urgent need for enhanced strategies that can stimulate robust and long-lasting antitumor effects. Microcystis, a notorious microalga, reveals the possibility of mediating SDT owing to the presence of gas vesicles (GVs) and phycocyanin (PC). Herein, a nontoxic strain of Microcystis elabens (labeled Me) is developed as a novel agent for SDT because it generates O2 under red light (RL) illumination, while GVs and PC act as cavitation nuclei and sonosensitizers, respectively. Moreover, algal debris is released after ultrasound (US) irradiation, which primes the Toll-like receptor pathway to initiate a cascade of immune responses. This sono-immune strategy inhibits CT26 colon tumor growth largely by promoting dendritic cell (DC) maturation and cytotoxic T-cell activation. After combination with the immune checkpoint blockade (ICB), the therapeutic outcome is further amplified, accompanied by satisfactory abscopal and immune memory effects; the similar potency is proven in the "cold" 4T1 triple-negative breast tumor. In addition, Me exhibits good biosafety without significant acute or chronic toxicity. Briefly, this study turns waste into wealth by introducing sono-immunotherapy based on Microcystis that achieved encouraging therapeutic effects on cancer, which is expected to be translated into the clinic.
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Affiliation(s)
- Yuqi Yang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
- Monash Suzhou Research Institute, Monash University, Suzhou, 215000, China
- Department of Materials Science and Engineering, Monash University, Clayton, VIC3800, Australia
| | - Jun Ge
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, 215123, China
| | - Xiaoyan Zhong
- Department of Toxicology, School of Public Health, Suzhou Medical College of Soochow University, Suzhou, 215123, China
| | - Luyao Liu
- Department of Toxicology, School of Public Health, Suzhou Medical College of Soochow University, Suzhou, 215123, China
| | - Linfu Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Shunyi Lu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, 215123, China
| | - Jiacheng Ren
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Youdong Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Shumin Sun
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Zhuorun Song
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, 215123, China
| | - Yuan Cheng
- Monash Suzhou Research Institute, Monash University, Suzhou, 215000, China
- Department of Materials Science and Engineering, Monash University, Clayton, VIC3800, Australia
| | - Liang Cheng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
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Zhang W, Li C, Lv Y, Wei S, Hu Y. Synergistic antifungal mechanism of cinnamaldehyde and nonanal against Aspergillus flavus and its application in food preservation. Food Microbiol 2024; 121:104524. [PMID: 38637086 DOI: 10.1016/j.fm.2024.104524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/11/2024] [Accepted: 03/23/2024] [Indexed: 04/20/2024]
Abstract
Aspergillus flavus colonization on agricultural products during preharvest and postharvest results in tremendous economic losses. Inspired by the synergistic antifungal effects of essential oils, the aims of this study were to explore the mechanism of combined cinnamaldehyde and nonanal (SCAN) against A. flavus and to evaluate the antifungal activity of SCAN loading into diatomite (DM). Shriveled mycelia were observed by scanning electron microscopy, especially in the SCAN treatment group. Calcofluor white staining, transmission electron microscopy, dichloro-dihydro-fluorescein diacetate staining and the inhibition of key enzymes in tricarboxylic acid cycle indicated that the antifungal mechanism of SCAN against A. flavus was related to the cell wall damage, reactive oxygen species accumulation and energy metabolism interruption. RNA sequencing revealed that some genes involved in antioxidation were upregulated, whereas genes responsible for cell wall biosynthesis, oxidative stress, cell cycle and spore development were significantly downregulated, supporting the occurrence of cellular apoptosis. In addition, compared with the control group, conidia production in 1.5 mg/mL DM/cinnamaldehyde, DM/nonanal and DM/SCAN groups were decreased by 27.16%, 48.22% and 76.66%, respectively, and the aflatoxin B1 (AFB1) contents decreased by 2.00%, 73.02% and 84.15%, respectively. These finding suggest that DM/SCAN complex has potential uses in food preservation.
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Affiliation(s)
- Wei Zhang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Cuixiang Li
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Yangyong Lv
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Shan Wei
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Yuansen Hu
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China; Food Laboratory of Zhongyuan, Luohe, 462300, Henan, China.
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Priyanka, Sharma S, Sharma M. Role of PE/PPE proteins of Mycobacterium tuberculosis in triad of host mitochondria, oxidative stress and cell death. Microb Pathog 2024; 193:106757. [PMID: 38908454 DOI: 10.1016/j.micpath.2024.106757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 06/12/2024] [Accepted: 06/18/2024] [Indexed: 06/24/2024]
Abstract
The PE and PPE family proteins of Mycobacterium tuberculosis (Mtb) is exclusively found in pathogenic Mycobacterium species, comprising approximately 8-10 % of the Mtb genome. These emerging virulent factors have been observed to play pivotal roles in Mtb pathogenesis and immune evasion through various strategies. These immunogenic proteins are known to modulate the host immune response and cell-death pathways by targeting the powerhouse of the cell, the mitochondria to support Mtb survival. In this article, we are focused on how PE/PPE family proteins target host mitochondria to induce mitochondrial perturbations, modulate the levels of cellular ROS (Reactive oxygen species) and control cell death pathways. We observed that the time of expression of these proteins at different stages of infection is crucial for elucidating their impact on the cell death pathways and eventually on the outcome of infection. This article focuses on understanding the contributions of the PE/PPE proteins by unravelling the triad of host mitochondria, oxidative stress and cell death pathways that facilitate the Mtb persistence. Understanding the role of these proteins in host cellular pathways and the intricate mechanisms paves the way for the development of novel therapeutic strategies to combat TB infections.
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Affiliation(s)
- Priyanka
- DSKC BioDiscovery Laboratory, Miranda House, and Department of Zoology, University of Delhi, Delhi, 110007, India.
| | - Sadhna Sharma
- DSKC BioDiscovery Laboratory, Miranda House, and Department of Zoology, University of Delhi, Delhi, 110007, India.
| | - Monika Sharma
- DSKC BioDiscovery Laboratory, Miranda House, and Department of Zoology, University of Delhi, Delhi, 110007, India.
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Li X, Xu B, Long L, Li Y, Xiao X, Qiu S, Xu J, Tian LW, Wang H. Phelligridimer A enhances the expression of mitofusin 2 and protects against cerebral ischemia/reperfusion injury. Chem Biol Interact 2024; 398:111090. [PMID: 38825057 DOI: 10.1016/j.cbi.2024.111090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/16/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
Mitochondrial dysfunction and endoplasmic reticulum (ER) stress play pivotal roles in the pathology of cerebral ischemia. In this study, we investigated whether phelligridimer A (PA), an active compound isolated from the medicinal and edible fungus Phellinus igniarius, ameliorates ischemic cerebral injury by restoring mitochondrial function and restricting ER stress. An in vitro cellular model of ischemic stroke-induced neuronal damage was established by exposing HT-22 neuronal cells to oxygen-glucose deprivation/reoxygenation (OGD/R). An in vivo animal model was established in rats subjected to middle cerebral artery occlusion/reperfusion (MCAO/R). The results showed that PA (1-10 μM) dose-dependently increased HT-22 cell viability, reduced OGD/R-induced lactate dehydrogenase release, and reversed OGD/R-induced apoptosis. PA reduced OGD/R-induced accumulation of reactive oxygen species, restored mitochondrial membrane potential, and increased ATP levels. Additionally, PA reduced the expression of the 78-kDa glucose-regulated protein (GRP78) and the phosphorylation of inositol-requiring enzyme-1α (p-IRE1α) and eukaryotic translation-initiation factor 2α (p-eIF2α). PA also inhibited the activation of the mitogen-activated protein kinase (MAPK) pathway in the OGD/R model. Moreover, treatment with PA restored the expression of mitofusin 2 (Mfn-2), a protein linking mitochondria and ER. The silencing of Mfn-2 abolished the protective effects of PA. The results from the animal study showed that PA (3-10 mg/kg) significantly reduced the volume of cerebral infarction and neurological deficits, which were accompanied by an increased level of Mfn-2, and decreased activation of the ER stress in the penumbra of the ipsilateral side after MCAO/R in rats. Taken together, these results indicate that PA counteracts cerebral ischemia-induced injury by restoring mitochondrial function and reducing ER stress. Therefore, PA might be a novel protective agent to prevent ischemia stroke-induced neuronal injury.
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Affiliation(s)
- Xing Li
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Bingtian Xu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Lu Long
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Yuting Li
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Xuan Xiao
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Shuqin Qiu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Jiangping Xu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China; Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, 510515, China; Center for Brain Science and Brain-Inspired Intelligence, Guangdong-Hong Kong-Macao Greater Bay Area, Guangzhou, 510515, China
| | - Li-Wen Tian
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China.
| | - Haitao Wang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China; Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, 510515, China; Center for Brain Science and Brain-Inspired Intelligence, Guangdong-Hong Kong-Macao Greater Bay Area, Guangzhou, 510515, China.
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Liu TY, Fu X, Yang Y, Gu J, Xiao M, Li DJ. Synergistic Effects of Glutamine Deprivation and Metformin in Acute Myeloid Leukemia. Curr Med Sci 2024; 44:799-808. [PMID: 39096478 DOI: 10.1007/s11596-024-2913-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 06/19/2024] [Indexed: 08/05/2024]
Abstract
OBJECTIVE The metabolic reprogramming of acute myeloid leukemia (AML) cells is a compensatory adaptation to meet energy requirements for rapid proliferation. This study aimed to examine the synergistic effects of glutamine deprivation and metformin exposure on AML cells. METHODS SKM-1 cells (an AML cell line) were subjected to glutamine deprivation and/or treatment with metformin or bis-2-(5-phenylacetamido-1,2,4-thiadiazol-2-yl) ethyl sulfide (BPTES, a glutaminase inhibitor) or cytarabine. Cell viability was detected by Cell Counting Kit-8 (CCK-8) assay, and cell apoptosis and reactive oxygen species (ROS) by flow cytometry. Western blotting was conducted to examine the levels of apoptotic proteins, including cleaved caspase-3 and poly(ADP-ribose) polymerase (PARP). Moreover, the human long noncoding RNA (lncRNA) microarray was used to analyze gene expression after glutamine deprivation, and results were confirmed with quantitative RT-PCR (qRT-PCR). The expression of metallothionein 2A (MT2A) was suppressed using siRNA. Cell growth and apoptosis were further detected by CCK-8 assay and flow cytometry, respectively, in cells with MT2A knockdown. RESULTS Glutamine deprivation or treatment with BPTES inhibited cell growth and induced apoptosis in SKM-1 cells. The lncRNA microarray result showed that the expression of MT family genes was significantly upregulated after glutamine deprivation. MT2A knockdown increased apoptosis, while proliferation was not affected in SKM-1 cells. In addition, metformin inhibited cell growth and induced apoptosis in SKM-1 cells. Both glutamine deprivation and metformin enhanced the sensitivity of SKM-1 cells to cytarabine. Furthermore, the combination of glutamine deprivation with metformin exhibited synergistic antileukemia effects on SKM-1 cells. CONCLUSION Targeting glutamine metabolism in combination with metformin is a promising new therapeutic strategy for AML.
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Affiliation(s)
- Tong-Yuan Liu
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xing Fu
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Ying Yang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jia Gu
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Min Xiao
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Deng-Ju Li
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Robert M, Kennedy BK, Crasta KC. Therapy-induced senescence through the redox lens. Redox Biol 2024; 74:103228. [PMID: 38865902 PMCID: PMC11215421 DOI: 10.1016/j.redox.2024.103228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 05/22/2024] [Accepted: 06/04/2024] [Indexed: 06/14/2024] Open
Abstract
Therapy-induced senescent tumor cells have emerged as significant drivers of tumor recurrence and disease relapse. Interestingly, reactive oxygen species (ROS) production and its associated redox signaling networks are intertwined with initiation and establishment of therapy-induced senescence. Therapy-induced senescent cells influence neighboring cells and the tumor microenvironment via their bioactive secretome known as the senescence-associated secretory phenotype (SASP). The intracellular effects of ROS are dose and context-dependent. Under normal physiological conditions, ROS is involved in various signalling pathways and cellular processes important for maintenance of cellular homeostasis, such as redox balance, stress response, inflammatory signalling, cell proliferation and cell death among others. However excess ROS accompanied by a pro-oxidant microenvironment can engender oxidative DNA damage, triggering cellular senescence. In this review, we discuss the role of ROS and the redox state dynamics in fine-tuning homeostatic processes that drive therapy-induced cell fate towards senescence establishment, as well as their influence in stimulating inflammatory signalling and SASP production. We also offer insights into interventional strategies, specifically senotherapeutics, that could potentially leverage on modulation of redox and antioxidant pathways. Lastly, we evaluate possible implications of redox rewiring during escape from therapy-induced senescence, an emerging area of research. We envision that examining therapy-induced senescence through the redox lens, integrated with time-resolved single-cell RNA sequencing combined with spatiotemporal multi-omics, could further enhance our understanding of its functional heterogeneity. This could aid identification of targetable signalling nodes to reduce disease relapse, as well as inform strategies for development of broad-spectrum senotherapeutics. Overall, our review aims to delineate redox-driven mechanisms which contribute to the biology of therapy-induced senescence and beyond, while highlighting implications for tumor initiation and recurrence.
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Affiliation(s)
- Matius Robert
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Centre for Healthy Longevity, National University Health System, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Brian K Kennedy
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Centre for Healthy Longevity, National University Health System, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
| | - Karen C Crasta
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Centre for Healthy Longevity, National University Health System, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; NUS Centre for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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Soleimani M, Najafabadi SJ, Razavi A, Tabatabaei SA, Mirmoosavi S, Asadigandomani H. Clinical characteristics, predisposing factors, and management of moraxella keratitis in a tertiary eye hospital. J Ophthalmic Inflamm Infect 2024; 14:36. [PMID: 39080177 PMCID: PMC11289192 DOI: 10.1186/s12348-024-00417-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Accepted: 07/19/2024] [Indexed: 08/02/2024] Open
Abstract
PURPOSE The Moraxella species is a very uncommon pathogen that leads to microbial keratitis (MK). This study aimed to evaluate the clinical features, predisposing factors, and outcomes of Moraxella keratitis in patients of a tertiary eye hospital. METHODS This retrospective study was conducted from 2015 to 2022, on patients who were admitted with the diagnosis of Moraxella keratitis confirmed by positive culture in a referral eye hospital. Demographics, predisposing factors, best-corrected visual acuity (BCVA), and prognosis were assessed. RESULTS A total of 106 individuals diagnosed with Moraxella keratitis, were analyzed. The mean age was 54.42 ± 19.43 years. The mean baseline BCVA of the patients was 2.28 ± 0.6 LogMAR, while this amount reached 1.49 ± 0.81 in the 6-month follow-up (P-value = 0.02). The mean BCVA in the six-month follow-up of the patients who needed surgical interventions was significantly lower than the patients who received only medical treatment (2.15 ± 0.65 vs. 1.29 ± 0.75 LogMAR, P-value = 0.02). Patients with diabetes and those without diabetes did not substantially vary in the prevalence of corneal perforation (P-value = 0.515). Three predisposing factors including corneal perforation (odds ratio = 19.27, P-value = 0.001), hypertension (HTN) (odds ratio = 3.62, P-value = 0.03), and older age (odds ratio = 1.03, P-value = 0.008) were significantly associated with more need for surgical interventions. CONCLUSION In this cohort, poor prognosis necessitating surgical interventions in Moraxella keratitis was found to be associated with corneal perforation, HTN, and older age.
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Affiliation(s)
- Mohammad Soleimani
- Ocular Trauma and Emergency Department, Farabi Eye Hospital, Tehran University of Medical Sciences, Qazvin Square, Qazvin Street, Tehran, Iran
| | - Sadra Jalali Najafabadi
- Ocular Trauma and Emergency Department, Farabi Eye Hospital, Tehran University of Medical Sciences, Qazvin Square, Qazvin Street, Tehran, Iran
| | - Alireza Razavi
- Research Center for Clinical Virology, Tehran University of Medical Science, Tehran, Iran
| | - Seyed Ali Tabatabaei
- Ocular Trauma and Emergency Department, Farabi Eye Hospital, Tehran University of Medical Sciences, Qazvin Square, Qazvin Street, Tehran, Iran
| | - Saeed Mirmoosavi
- Endocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Hassan Asadigandomani
- Ocular Trauma and Emergency Department, Farabi Eye Hospital, Tehran University of Medical Sciences, Qazvin Square, Qazvin Street, Tehran, Iran.
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Zhu L, Zhu M, Li X, Shen Y, Duan S, Yang J. Functional Characterization of Ao4g24: An Uncharacterized Gene Involved in Conidiation, Trap Formation, Stress Response, and Secondary Metabolism in Arthrobotrys oligospora. Microorganisms 2024; 12:1532. [PMID: 39203374 PMCID: PMC11356499 DOI: 10.3390/microorganisms12081532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Revised: 07/23/2024] [Accepted: 07/24/2024] [Indexed: 09/03/2024] Open
Abstract
Arthrobotrys oligospora is a typical nematode-trapping (NT) fungus, which can secrete food cues to lure, capture, and digest nematodes by triggering the production of adhesive networks (traps). Based on genomic and proteomic analyses, multiple pathogenic genes and proteins involved in trap formation have been characterized; however, there are numerous uncharacterized genes that play important roles in trap formation. The functional studies of these unknown genes are helpful in systematically elucidating the complex interactions between A. oligospora and nematode hosts. In this study, we screened the gene AOL_s00004g24 (Ao4g24). This gene is similar to the SWI/SNF chromatin remodeling complex, which was found to play a potential role in trap formation in our previous transcriptome analysis. Here, we characterized the function of Ao4g24 by gene disruption, phenotypic analysis, and metabolomics. The deletion of Ao4g24 led to a remarkable decrease in conidia yield, trap formation, and secondary metabolites. Meanwhile, the absence of Ao4g24 influenced the mitochondrial membrane potential, ATP content, autophagy, ROS level, and stress response. These results indicate that Ao4g24 has crucial functions in sporulation, trap formation, and pathogenicity in NT fungi. Our study provides a reference for understanding the role of unidentified genes in mycelium growth and trap formation in NT fungi.
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Affiliation(s)
| | | | | | | | | | - Jinkui Yang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Southwest Microbial Diversity of the Ministry of Education, and School of Life Science, Yunnan University, Kunming 650032, China; (L.Z.); (M.Z.); (X.L.); (Y.S.); (S.D.)
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Li X, Zhou Z, Tao Y, He L, Zhan F, Li J. Linking homocysteine and ferroptosis in cardiovascular disease: insights and implications. Apoptosis 2024:10.1007/s10495-024-01999-6. [PMID: 39044092 DOI: 10.1007/s10495-024-01999-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2024] [Indexed: 07/25/2024]
Abstract
Homocysteine (Hcy) is a metabolic intermediate product derived from methionine. Hyperhomocysteinemia is a condition associated with various diseases. Hcy is recognized as a risk factor for cardiovascular disease (CVD). Ferroptosis, a novel form of cell death, is primarily characterized by substantial iron accumulation and lipid peroxidation. Recent research indicates a close association between ferroptosis and the pathophysiological processes of tumors, neurological diseases, CVD, and other ailments. However, limited research has been conducted on the impact of Hcy on ferroptosis. Therefore, this paper aimed to investigate the potential roles and mechanisms of homocysteine and ferroptosis in the context of cardiovascular disease. By conducting comprehensive literature research and analysis, we aimed to summarize recent advancements in understanding the effects of homocysteine on ferroptosis in cardiovascular diseases. This research contributes to a profound understanding of this critical domain.
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Affiliation(s)
- Xiaozhong Li
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, China
- Jiangxi Key Laboratory of Molecular Medicine, Nanchang, 330006, China
| | - Zheng Zhou
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, China
- Jiangxi Key Laboratory of Molecular Medicine, Nanchang, 330006, China
| | - Yu Tao
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, China
| | - Lei He
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, China
| | - Fenfang Zhan
- Jiangxi Key Laboratory of Molecular Medicine, Nanchang, 330006, China
- Department of Anesthesiology, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, China
| | - Juxiang Li
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, China.
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Kim K, Yoon J, Lim KM. Syringaresinol Attenuates α-Melanocyte-Stimulating Hormone-Induced Reactive Oxygen Species Generation and Melanogenesis. Antioxidants (Basel) 2024; 13:876. [PMID: 39061944 PMCID: PMC11273534 DOI: 10.3390/antiox13070876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 07/15/2024] [Accepted: 07/18/2024] [Indexed: 07/28/2024] Open
Abstract
Ginseng has been utilized for centuries in both the medicinal and cosmetic realms. Recent studies have actively investigated the biological activity of ginseng berry and its constituents. (+)-Syringaresinol [(+)-SYR], an active component of ginseng berry, has been demonstrated to have beneficial effects on the skin, but its potential impact on skin pigmentation has not been fully explored. Here, the antioxidant and anti-pigmentary activity of (+)-SYR were evaluated in B16F10 murine melanoma cells and in an artificial human pigmented skin model, Melanoderm™. A real-time PCR, Western blotting, immunofluorescence staining, and histochemistry staining were conducted to confirm the effects of (+)-SYR on pigmentation. (+)-SYR reduced melanogenesis and dendrite elongation in α-melanocyte-stimulating hormone (α-MSH)-primed B16F10 cells with low cytotoxicity. (+)-SYR suppressed the expression of melanogenic genes, namely tyrosinase (TYR), tyrosinase-related protein 1 (TRP-1), and tyrosinase-related protein 2 (TRP-2). Notably, (+)-SYR attenuated α-MSH-induced cytosolic and mitochondrial reactive oxygen species (ROS) generation, which was attributable at least in part to the suppression of NADPH oxidase-4 (NOX 4) expression. Finally, the brightening activities of (+)-SYR were verified using Melanoderm™, underscoring the potential of ginseng berry and (+)-SYR as functional ingredients in skin-brightening cosmetics.
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Affiliation(s)
| | | | - Kyung-Min Lim
- College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea; (K.K.); (J.Y.)
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Bhargavi G, Mallakuntla MK, Kale D, Tiwari S. Rv0687 a Putative Short-Chain Dehydrogenase Is Required for In Vitro and In Vivo Survival of Mycobacterium tuberculosis. Int J Mol Sci 2024; 25:7862. [PMID: 39063103 PMCID: PMC11277061 DOI: 10.3390/ijms25147862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 07/12/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
Mycobacterium tuberculosis (Mtb), a successful human pathogen, resides in host sentinel cells and combats the stressful intracellular environment induced by reactive oxygen and nitrogen species during infection. Mtb employs several evasion mechanisms in the face of the host as a survival strategy, including detoxifying enzymes as short-chain dehydrogenases/reductases (SDRs) to withstand host-generated insults. In this study, using specialized transduction, we have generated a Rv0687 deletion mutant and its complemented strain and investigated the functional role of Rv0687, a member of SDRs family genes in Mtb pathogenesis. A wildtype (WT) and a mutant Mtb strain lacking Rv0687 (RvΔ0687) were tested for the in vitro stress response and in vivo survival in macrophages and mice models of infection. The study demonstrates that the deletion of Rv0687 elevated the sensitivity of Mtb to oxidative and nitrosative stress-inducing agents. Furthermore, the lack of Rv0687 compromised the survival of Mtb in primary bone marrow macrophages and led to an increase in the levels of the secreted proinflammatory cytokines TNF-α and MIP-1α. Interestingly, the growth of WT and RvΔ0687 was similar in the lungs of infected immunocompromised mice; however, a significant reduction in RvΔ0687 growth was observed in the spleen of immunocompromised Rag-/- mice at 4 weeks post-infection. Moreover, Rag-/- mice infected with RvΔ0687 survived longer compared to those infected with the WT Mtb strain. Additionally, we observed a significant reduction in the bacterial burden in the spleens and lungs of immunocompetent C57BL/6 mice infected with RvΔ0687 compared to those infected with complemented and WT Mtb strains. Collectively, this study reveals that Rv0687 plays a role in Mtb pathogenesis.
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Affiliation(s)
| | | | | | - Sangeeta Tiwari
- Department of Biological Sciences, Border Biomedical Research Centre, University of Texas at El Paso, El Paso, TX 79968, USA
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Zhang KH, Jiao L, Wang Y, Sun SC. Arf6 GTPase deficiency leads to porcine oocyte quality decline during aging. FASEB J 2024; 38:e23739. [PMID: 38884157 DOI: 10.1096/fj.202400893r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/21/2024] [Accepted: 05/29/2024] [Indexed: 06/18/2024]
Abstract
Arf6 is a member of ADP-ribosylation factor (Arf) family, which is widely implicated in the regulation of multiple physiological processes including endocytic recycling, cytoskeletal organization, and membrane trafficking during mitosis. In this study, we investigated the potential relationship between Arf6 and aging-related oocyte quality, and its roles on organelle rearrangement and cytoskeleton dynamics in porcine oocytes. Arf6 expressed in porcine oocytes throughout meiotic maturation, and it decreased in aged oocytes. Disruption of Arf6 led to the failure of cumulus expansion and polar body extrusion. Further analysis indicated that Arf6 modulated ac-tubulin for meiotic spindle organization and microtubule stability. Besides, Arf6 regulated cofilin phosphorylation and fascin for actin assembly, which further affected spindle migration, indicating the roles of Arf6 on cytoskeleton dynamics. Moreover, the lack of Arf6 activity caused the dysfunction of Golgi and ER for protein synthesis and signal transduction. Mitochondrial dysfunction was also observed in Arf6-deficient porcine oocytes, which was supported by the increased ROS level and abnormal membrane potential. In conclusion, our results reported that insufficient Arf6 was related to aging-induced oocyte quality decline through spindle organization, actin assembly, and organelle rearrangement in porcine oocytes.
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Affiliation(s)
- Kun-Huan Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Le Jiao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yue Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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Jacobs S, Payne C, Shaboodien S, Kgatla T, Pretorius A, Jumaar C, Maarman G, Sanni O. Pulmonary hypertension and the potential of 'drug' repurposing: A case for African medicinal plants. Afr J Thorac Crit Care Med 2024; 30:e1352. [PMID: 39171151 PMCID: PMC11334905 DOI: 10.7196/ajtccm.2024.v30i2.1352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 03/25/2024] [Indexed: 08/23/2024] Open
Abstract
Abstract Pulmonary hypertension (PH) is a haemodynamic disorder in which elevated blood pressure in the pulmonary circulation is caused by abnormal vascular tone. Despite advances in treatment, PH mortality remains high, and drug repurposing has been proposed as a mitigating approach. This article reviews the studies that have investigated drug repurposing as a viable option for PH. We provide an overview of PH and highlight pharmaceutical drugs with repurposing potential, based on limited evidence of their mechanisms of action. Moreover, studies have demonstrated the benefits of medicinal plants in PH, most of which are of Indian or Asian origin. Africa is a rich source of many medicinal plants that have been scientifically proven to counteract myriad pathologies. When perusing these studies, one will notice that some African medicinal plants can counteract the molecular pathways (e.g. proliferation, vasoconstriction, inflammation, oxidative stress and mitochondrial dysfunction) that are also involved in the pathogenesis of PH. We review the actions of these plants with actions applicable to PH and highlight that they could be repurposed as adjunct PH therapies. However, these plants have either never been tested in PH, or there is little evidence of their actions against PH. We therefore encourage caution, as more research is needed to study these plants further in experimental models of PH while acknowledging that the outcomes of such proof of-concept studies may not always yield promising findings. Regardless, this article aims to stimulate future research that could make timely contributions to the field. Study synopsis What the study adds. Pulmonary hypertension (PH) remains a fatal disease, and 80% of the patients live in developing countries where resources are scarce and specialised therapies are often unavailable. Drug repurposing is a viable option to try to improve treatment outcomes.Implications of the findings. We propose that another form of 'drug' repurposing is the use of medicinal plants, many of which have demonstrated benefits against pathological processes that are also key in PH, e.g. apoptosis, tumour-like growth of cells, proliferation, oxidative stress and mitochondrial dysfunction.
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Affiliation(s)
- S Jacobs
- Centre for Cardiometabolic Research in Africa (CARMA), Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - C Payne
- Centre for Cardiometabolic Research in Africa (CARMA), Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - S Shaboodien
- Centre for Cardiometabolic Research in Africa (CARMA), Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - T Kgatla
- Centre for Cardiometabolic Research in Africa (CARMA), Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - A Pretorius
- Centre for Cardiometabolic Research in Africa (CARMA), Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - C Jumaar
- Centre for Cardiometabolic Research in Africa (CARMA), Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - G Maarman
- Centre for Cardiometabolic Research in Africa (CARMA), Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - O Sanni
- Centre for Cardiometabolic Research in Africa (CARMA), Division of Medical Physiology, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
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Zhu S, Cui Y, Zhang W, Ji Y, Li L, Luo S, Cui J, Li M. Inflammation Can Be a High-Risk Factor for Mucosal Nonunion of MRONJ by Regulating SIRT1 Signaling When Treated with an Oncologic Dose of Zoledronate. Drug Des Devel Ther 2024; 18:2793-2812. [PMID: 38979400 PMCID: PMC11229984 DOI: 10.2147/dddt.s456811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 05/24/2024] [Indexed: 07/10/2024] Open
Abstract
Purpose Zoledronate (ZA) stands as a highly effective antiresorptive agent known to trigger medication-related osteonecrosis of the jaw (MRONJ). Its clinical dosages primarily encompass those used for oncologic and osteoporosis treatments. While inflammation is recognized as a potential disruptor of mucosal healing processes associated with ZA, prior research has overlooked the influence of varying ZA dosages on tissue adaptability. Therefore, a deeper understanding of the specific mechanisms by which inflammation exacerbates ZA-induced MRONJ, particularly when inflammation acts as a risk factor, remains crucial. Methods Cell proliferation and migration of human oral keratinocytes (HOK) was analyzed after treatment with different doses of ZA and/or lipopolysaccharide (LPS) to assess their possible effect on mucosal healing of extraction wounds. Mouse periodontitis models were established using LPS, and histological changes in extraction wounds were observed after the administration of oncologic dose ZA. Hematoxylin and eosin (HE) staining and immunofluorescence were used to evaluate mucosal healing. Results In vitro, LPS did not exacerbate the effects of osteoporosis therapeutic dose of ZA on the proliferation and migration of HOK cells, while aggravated these with the oncologic dose of ZA treatment by inducing mitochondrial dysfunction and oxidative stress via regulating SIRT1 expression. Furthermore, SIRT1 overexpression can alleviate this process. In vivo, local injection of LPS increased the nonunion of mucous membranes in MRONJ and decreased the expression of SIRT1, PGC-1α, and MnSOD. Conclusion Inflammation aggravates oncologic dose of ZA-induced mitochondrial dysfunction and oxidative stress via a SIRT1-dependent pathway, enhancing the risk of impaired mucosal healing in MRONJ. Our study implies that inflammation becomes a critical risk factor for MRONJ development at higher ZA concentrations. Elucidating the mechanisms of inflammation as a risk factor for mucosal non-healing in MRONJ could inform the development of SIRT1-targeted therapies.
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Affiliation(s)
- Siqi Zhu
- School of Stomatology, Jinzhou Medical University, Jinzhou, People's Republic of China
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, People's Republic of China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, People's Republic of China
| | - Yajun Cui
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, People's Republic of China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, People's Republic of China
| | - Weidong Zhang
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, People's Republic of China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, People's Republic of China
| | - Yu Ji
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, People's Republic of China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, People's Republic of China
| | - Lingshuang Li
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, People's Republic of China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, People's Republic of China
| | - Shenglei Luo
- Department of Oral and Maxillofacial Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Jing Cui
- Department of Oral and Maxillofacial Surgery, Jinan Stomatological Hospital, Jinan, People's Republic of China
- Central Laboratory, Jinan Key Laboratory of oral tissue regeneration, Shandong Provincial Health Commission Key Laboratory of Oral Diseases and Tissue Regeneration, Jinan, People's Republic of China
| | - Minqi Li
- Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, People's Republic of China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, People's Republic of China
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Zheng Q, Liu H, Gao Y, Cao G, Wang Y, Li Z. Ameliorating Mitochondrial Dysfunction for the Therapy of Parkinson's Disease. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311571. [PMID: 38385823 DOI: 10.1002/smll.202311571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/27/2024] [Indexed: 02/23/2024]
Abstract
Parkinson's disease (PD) is currently the second most incurable central neurodegenerative disease resulting from various pathogenesis. As the "energy factory" of cells, mitochondria play an extremely important role in supporting neuronal signal transmission and other physiological activities. Mitochondrial dysfunction can cause and accelerate the occurrence and progression of PD. How to effectively prevent and suppress mitochondrial disorders is a key strategy for the treatment of PD from the root. Therefore, the emerging mitochondria-targeted therapy has attracted considerable interest. Herein, the relationship between mitochondrial dysfunction and PD, the causes and results of mitochondrial dysfunction, and major strategies for ameliorating mitochondrial dysfunction to treat PD are systematically reviewed. The study also prospects the main challenges for the treatment of PD.
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Affiliation(s)
- Qing Zheng
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Suzhou Medical College, Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Hanghang Liu
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Suzhou Medical College, Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
- Hubei Key Laboratory of Natural Products Research and Development and College of Biological and Pharmaceutical Science, China Three Gorges University, Yichang, 443002, China
| | - Yifan Gao
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Suzhou Medical College, Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Guozhi Cao
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Suzhou Medical College, Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Yusong Wang
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Suzhou Medical College, Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Zhen Li
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Suzhou Medical College, Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
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Huang Y, Yin GN, Liu FY, Fridayana FR, Niloofar L, Vo MN, Ryu JK. Argonaute 2 restored erectile function and corpus cavernosum mitochondrial function by reducing apoptosis in a mouse model of cavernous nerve injury. Investig Clin Urol 2024; 65:400-410. [PMID: 38978220 PMCID: PMC11231665 DOI: 10.4111/icu.20240077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/18/2024] [Accepted: 05/09/2024] [Indexed: 07/10/2024] Open
Abstract
PURPOSE To determine whether the overexpression of the Argonaute RNA-induced silencing complex catalytic component 2 (Ago2) improves erectile function in mice after cavernous nerve injury (CNI). MATERIALS AND METHODS Lentiviruses containing Ago2 open reading frame (ORF) mouse clone (Ago2 O/E) were used to overexpress Ago2, and lentiviruses ORF negative control particles (NC) were used as a negative control. Three days before preparing the CNI model, we injected lentiviruses into the penises of 8-week-old male C57BL/6 mice. Animals were then divided into four groups: the sham operation control group and the CNI+phosphate-buffered saline, CNI+NC, and CNI+Ago2 O/E groups. One week later, erectile function was assessed by electrically stimulating cavernous nerves bilaterally and obtaining intracavernous pressure parameters. Penile tissue was also collected for molecular mechanism studies. RESULTS Ago2 overexpression improved erectile function in mice after CNI-induced erectile dysfunction (ED). Immunofluorescence staining and Western blot analysis showed that under Ago2 overexpressing conditions, the contents of endothelial cells, pericytes, and neuronal cells increased in the penile tissues of CNI mice, and this was attributed to reduced apoptosis and ROS production. In addition, we also found that Ago2 overexpression could restore penile mitochondrial function, thereby improving erectile function in CNI-induced ED mice. CONCLUSIONS Our findings demonstrate that Ago2 overexpression can reduce penile cell apoptosis, restore penile mitochondrial function, and improve erectile function in CNI-induced ED mice.
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Affiliation(s)
- Yan Huang
- National Research Center for Sexual Medicine and Department of Urology, Inha University College of Medicine, Incheon, Korea
- Program in Biomedical Science & Engineering, Inha University, Incheon, Korea
| | - Guo Nan Yin
- National Research Center for Sexual Medicine and Department of Urology, Inha University College of Medicine, Incheon, Korea
| | - Fang-Yuan Liu
- National Research Center for Sexual Medicine and Department of Urology, Inha University College of Medicine, Incheon, Korea
| | - Fitri Rahma Fridayana
- National Research Center for Sexual Medicine and Department of Urology, Inha University College of Medicine, Incheon, Korea
- Program in Biomedical Science & Engineering, Inha University, Incheon, Korea
| | - Lashkari Niloofar
- National Research Center for Sexual Medicine and Department of Urology, Inha University College of Medicine, Incheon, Korea
- Program in Biomedical Science & Engineering, Inha University, Incheon, Korea
| | - Minh Nhat Vo
- National Research Center for Sexual Medicine and Department of Urology, Inha University College of Medicine, Incheon, Korea
| | - Ji-Kan Ryu
- National Research Center for Sexual Medicine and Department of Urology, Inha University College of Medicine, Incheon, Korea
- Program in Biomedical Science & Engineering, Inha University, Incheon, Korea.
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Chen Z, Xie W, Tang S, Lin M, Ren L, Huang X, Deng L, Qian R, Wang Z, Xiong D, Xie P, Liu W. Taraxerone exerts antipulmonary fibrosis effect through Smad signaling pathway and antioxidant stress response in a Sirtuin1-dependent manner. Phytother Res 2024; 38:3720-3735. [PMID: 38776174 DOI: 10.1002/ptr.8221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 11/28/2023] [Accepted: 11/30/2023] [Indexed: 05/24/2024]
Abstract
Idiopathic pulmonary fibrosis treatments are limited, often with severe side effects, highlighting the need for novel options. Taraxerone has diverse biomedical properties, but its mechanism remains unclear. This study investigates taraxerone's impact and the mechanisms involved in bleomycin-induced pulmonary fibrosis in mice. After establishing a pulmonary fibrosis mouse model, taraxerone was intraperitoneally injected continuously for 14-28 days. The in vivo antifibrotic and antioxidative stress effects of taraxerone were assessed. In vitro, the influence of taraxerone on transforming growth factor-β1-induced myofibroblast transformation and oxidative stress was investigated. Subsequently, quantitative polymerase chain reaction screened the histone deacetylase and Sirtuin family, and taraxerone's effects on SIRT1 were assessed. After SIRT1 siRNA treatment, changes in myofibroblast transformation and antioxidant capacity in response to taraxerone were observed. Acetylation and phosphorylation levels of Smad3 were evaluated. We also examined the binding levels of SIRT1 with Pho-Smad3 and Smad3, as well as the nuclear localization of Smad2/3. EX527 confirmed SIRT1's in vivo action in response to taraxerone. In vitro experiments suggested that taraxerone inhibited myofibroblast differentiation by activating SIRT1 and reducing oxidative stress. We also observed a new interaction between SIRT1 and the Smad complex. Taraxerone activates SIRT1, enabling it to bind directly to Smad3. This leads to reduced Smad complex phosphorylation and limited nuclear translocation. As a result, the transcription of fibrotic factors is reduced. In vivo validation confirms taraxerone's SIRT1-mediated antifibrotic effectiveness. This suggests that targeting SIRT1-mediated inhibition of myofibroblast differentiation could be a key strategy in taraxerone-based therapy for pulmonary fibrosis.
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Affiliation(s)
- Ziwei Chen
- Xiangya Nursing School, Central South University, Changsha, China
- Laboratory Medicine Department, Xiangya Hospital, Central South University, Changsha, China
| | - Weixi Xie
- Xiangya Nursing School, Central South University, Changsha, China
| | - Siyuan Tang
- Xiangya Nursing School, Central South University, Changsha, China
| | - Miao Lin
- Xiangya Nursing School, Central South University, Changsha, China
| | - Lu Ren
- Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital, Central South University, Changsha, China
- Department of Dermatology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiaoting Huang
- Xiangya Nursing School, Central South University, Changsha, China
| | - Lang Deng
- Xiangya Nursing School, Central South University, Changsha, China
| | - Rui Qian
- Xiangya Nursing School, Central South University, Changsha, China
| | - Zun Wang
- Xiangya Nursing School, Central South University, Changsha, China
| | - Dayang Xiong
- Xiangya Nursing School, Central South University, Changsha, China
| | - Pingli Xie
- National Experimental Teaching Demonstration Center for Medical Function, Central South University, Changsha, China
| | - Wei Liu
- Xiangya Nursing School, Central South University, Changsha, China
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Tian L, Ren J, Luo Y. The effects of different durations of exposure to hypomagnetic field on the number of active mitochondria and ROS levels in the mouse hippocampus. Biochem Biophys Rep 2024; 38:101696. [PMID: 38586825 PMCID: PMC10995802 DOI: 10.1016/j.bbrep.2024.101696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/20/2024] [Accepted: 03/24/2024] [Indexed: 04/09/2024] Open
Abstract
Reactive oxygen species (ROS) are one of the potential molecules in response to a hypomagnetic field (HMF), and exposure to an HMF for eight weeks led to an increase in ROS levels in the whole hippocampus area in mice. ROS are mainly derived from the byproducts of mitochondrial metabolism. However, previous in vivo studies mostly focus on the influence of one time point of HMF exposure on the mouse hippocampus and lack comparative studies on the effects of different durations of HMF exposure on the mouse hippocampus. Here, we investigated the effects of different durations of HMF on the number of active mitochondria and ROS levels in mouse hippocampus. Compared with the geomagnetic field (GMF) group, we found that the number of active mitochondria in the hippocampus was significantly reduced during the sixth week of HMF exposure, whereas the number of active mitochondria was significantly reduced and the ROS levels was significantly increased during the eighth week of HMF exposure. The number of active mitochondria gradually decreased and ROS levels gradually increased in both GMF and HMF groups with prolonged exposure time. In addition, the expression level of the PGC-1α gene in the hippocampus, the main regulator of mitochondrial biogenesis, decreased significantly in the eighth week of HMF exposure. These results reveal that the changes in active mitochondria number and ROS levels were dependent on the durations of HMF exposure, and prolonged exposure to HMF exacerbates these changes.
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Affiliation(s)
- Lanxiang Tian
- Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jie Ren
- Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yukai Luo
- Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
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Taghizadeh-Hesary F. "Reinforcement" by Tumor Microenvironment: The Seventh "R" of Radiobiology. Int J Radiat Oncol Biol Phys 2024; 119:727-733. [PMID: 38032584 DOI: 10.1016/j.ijrobp.2023.09.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/11/2023] [Accepted: 09/16/2023] [Indexed: 12/01/2023]
Affiliation(s)
- Farzad Taghizadeh-Hesary
- ENT and Head and Neck Research Center and Department, The Five Senses Health Institute, School of Medicine, Iran University of Medical Sciences, Tehran, Iran; Clinical Oncology Department, Iran University of Medical Sciences, Tehran, Iran.
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Guallar-Garrido S, Soldati T. Exploring host-pathogen interactions in the Dictyostelium discoideum-Mycobacterium marinum infection model of tuberculosis. Dis Model Mech 2024; 17:dmm050698. [PMID: 39037280 DOI: 10.1242/dmm.050698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024] Open
Abstract
Mycobacterium tuberculosis is a pathogenic mycobacterium that causes tuberculosis. Tuberculosis is a significant global health concern that poses numerous clinical challenges, particularly in terms of finding effective treatments for patients. Throughout evolution, host immune cells have developed cell-autonomous defence strategies to restrain and eliminate mycobacteria. Concurrently, mycobacteria have evolved an array of virulence factors to counteract these host defences, resulting in a dynamic interaction between host and pathogen. Here, we review recent findings, including those arising from the use of the amoeba Dictyostelium discoideum as a model to investigate key mycobacterial infection pathways. D. discoideum serves as a scalable and genetically tractable model for human phagocytes, providing valuable insights into the intricate mechanisms of host-pathogen interactions. We also highlight certain similarities between M. tuberculosis and Mycobacterium marinum, and the use of M. marinum to more safely investigate mycobacteria in D. discoideum.
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Affiliation(s)
- Sandra Guallar-Garrido
- Department of Biochemistry, Faculty of Science, University of Geneva, 30 quai Ernest-Ansermet, Science II, 1211 Geneva-4, Switzerland
| | - Thierry Soldati
- Department of Biochemistry, Faculty of Science, University of Geneva, 30 quai Ernest-Ansermet, Science II, 1211 Geneva-4, Switzerland
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Wang Z, Zhang W, Zhu X, Mei J, Wang X, Zhang L, Ou L, Guan X, Pang X, Liu Y, Meng Z, Ma C. Purine-rich Element-binding Protein B Mediates Ferroptosis in Lipopolysaccharide-induced Raw264.7 Macrophage Inflammation. JOURNAL OF PHYSIOLOGICAL INVESTIGATION 2024; 67:187-197. [PMID: 39188240 DOI: 10.4103/ejpi.ejpi-d-24-00008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 06/11/2024] [Indexed: 08/28/2024]
Abstract
ABSTRACT Lipopolysaccharide (LPS) plays an important role in Raw264.7 macrophage ferroptosis and inflammation. Purine-rich element-binding protein B (Purb) influences cellular processes by regulating gene expression as a transcription factor. However, the effect and molecular mechanism of Purb in regulating Raw264.7 macrophage ferroptosis is still unknown. In this study, we used malondialdehyde, glutathione (GSH) assays, Fe 2+ fluorescence, reactive oxygen species staining, and western blotting to determine the effect of Purb on LPS-induced Raw264.7 macrophage ferroptosis. Pharmacological inhibitor of ferroptosis was utilized to explore its potential effects for inflammation by reverse transcription-quantitative polymerase chain reaction analysis. Meanwhile, chromatin immunoprecipitation was performed to verify the binding of Purb and the GSH-dependent peroxidase 4 (Gpx4). The results showed that LPS-induced inflammation in Raw264.7 macrophages was inhibited by ferroptosis inhibitor Fer-1 treatment. LPS inhibited the expression of Purb in Raw264.7 macrophages. In addition, Purb overexpression relieved the ferroptosis, and inflammatory response of Raw264.7 macrophages induced by LPS. Mechanistically, the binding of Purb to the Gpx4 promoter was decreased after LPS stimulation. Therefore, we concluded for the first time that Purb played a critical role in LPS-induced ferroptosis and inflammatory response by regulating the transcription of Gpx4. These results provide a theoretical basis for further research on the macrophage ferroptosis and inflammation.
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Affiliation(s)
- Zhaosi Wang
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Wei Zhang
- Department of Pulmonary and Critical Care Medicine, The Fifth Affiliated Hospital of Harbin Medical University, Daqing, China
| | - Xiangrui Zhu
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Jian Mei
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Xiaoying Wang
- Department of Pharmaceutical Analysis, College of Pharmacy, Harbin Medical University (Daqing), Daqing, China
| | - Lixin Zhang
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Langlin Ou
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Xiaoyu Guan
- Department of Pharmacology, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Xiangming Pang
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Yuxiang Liu
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Zitong Meng
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
| | - Cui Ma
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing, China
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Pang Y, Tao X, Qin Z, Jiang M, Song E, Song Y. Chiral silver nanoparticles with surface-anchored L(D)-Cys exhibit dissimilar biological characteristics in vitro but not in vivo. Toxicol Lett 2024; 398:28-37. [PMID: 38851367 DOI: 10.1016/j.toxlet.2024.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 05/16/2024] [Accepted: 06/06/2024] [Indexed: 06/10/2024]
Abstract
This work investigated the influence of surface chirality on cellular internalization, cytotoxicity, and tissue distribution of silver nanoparticles (AgNPs). D-cysteine and L-cysteine are chiral forms of the amino acid cysteine. These enantiomers exhibit distinct spatial arrangements, with D-cysteine having a different configuration from L-cysteine. This structural dissimilarity can lead to variations in how these forms interact with biological systems, potentially impacting their cytotoxic responses. Four distinct types of AgNPs were synthesized, each possessing a unique surface coating: pristine AgNPs (pAgNPs), L-cysteine coated AgNPs (AgNPs@L-Cys), D-cysteine coated AgNPs (AgNPs@D-Cys), and racemic AgNPs coated with both L-Cys and D-Cys (AgNPs@L/D-Cys). We found chiral-dependent cytotoxicity of AgNPs on J774A.1 cells. Specifically, AgNPs@L-Cys exhibited the highest toxicity, and AgNPs@D-Cys exhibited the lowest toxicity. Meanwhile, the cellular uptake of the AgNPs correlated nicely with their cytotoxicity, with AgNPs@L-Cys being internalized to the greatest extent while AgNPs@D-Cys displays the least internalization. Scavenger receptors and clathrin predominantly mediate the cellular internalization of these AgNPs. Strikingly, the dissimilar cellular internalization and cytotoxicity of AgNPs with different chirality were eliminated upon protein corona coverage. Notably, following intravenous injection in mice, these four types of AgNPs showed similar patterns among various organs due to the inevitable protein adsorption in the bloodstream. These findings underscored the pivotal role of surface chirality in governing the biological interactions and toxicity of AgNPs.
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Affiliation(s)
- Yingxin Pang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Food Science, Southwest University, China
| | - Xiaoqi Tao
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Food Science, Southwest University, China; Joint International Research Laboratory of Animal Health and Animal Food Safety, College of Veterinary Medicine, Southwest University, China.
| | - Zongmin Qin
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Food Science, Southwest University, China
| | - Muran Jiang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Food Science, Southwest University, China
| | - Erqun Song
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, China
| | - Yang Song
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences.
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