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Sharma V, Patial V. Insights into the molecular mechanisms of malnutrition-associated steatohepatitis: A review. Liver Int 2024; 44:2156-2173. [PMID: 38775001 DOI: 10.1111/liv.15932] [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: 11/01/2023] [Revised: 03/21/2024] [Accepted: 03/28/2024] [Indexed: 08/10/2024]
Abstract
Malnutrition is a public health epidemic mainly targeting poverty-stricken people, young ones, older people, pregnant women, and individuals with metabolic disorders. Severe malnutrition is linked with several metabolic defects, such as hepatic dysfunction, hypertension, cardiovascular disease, and osteoarthritis. The proper functioning of the liver plays a crucial role in ensuring the supply of nutrients to the body. Consequently, inadequate nutrition can lead to severe periportal hepatic steatosis due to compromised mitochondrial and peroxisome functions. Reduced protein intake disrupts essential metabolic processes like the TCA cycle, oxidative phosphorylation, and β-oxidation, ultimately affecting ATP production. Furthermore, this can trigger a cascade of events, including disturbances in amino acid metabolism, iron metabolism, and gut microbiota, which activate genes involved in de novo lipogenesis, leading to the accumulation of lipids in the liver. The condition, in prolonged cases, progresses to steatohepatitis and liver fibrosis. Limited therapeutic solutions are available; however, few dietary supplements and drugs have demonstrated positive effects on the growth and health of malnourished individuals. These supplements improve parameters such as inflammatory and oxidative status, reduce triglyceride accumulation, enhance insulin sensitivity, and downregulate gene expression in hepatic lipid metabolism. This review elucidates the various mechanisms involved in malnutrition-associated steatohepatitis and provides an overview of the available approaches for treating this condition.
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Affiliation(s)
- Vinesh Sharma
- Pharmacology and Toxicology Laboratory, Dietetics & Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Vikram Patial
- Pharmacology and Toxicology Laboratory, Dietetics & Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Ashique S, Mishra N, Mantry S, Garg A, Kumar N, Gupta M, Kar SK, Islam A, Mohanto S, Subramaniyan V. Crosstalk between ROS-inflammatory gene expression axis in the progression of lung disorders. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03392-1. [PMID: 39196392 DOI: 10.1007/s00210-024-03392-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Accepted: 08/16/2024] [Indexed: 08/29/2024]
Abstract
A significant number of deaths and disabilities worldwide are brought on by inflammatory lung diseases. Many inflammatory lung disorders, including chronic respiratory emphysema, resistant asthma, resistance to steroids, and coronavirus-infected lung infections, have severe variants for which there are no viable treatments; as a result, new treatment alternatives are needed. Here, we emphasize how oxidative imbalance contributes to the emergence of provocative lung problems that are challenging to treat. Endogenic antioxidant systems are not enough to avert free radical-mediated damage due to the induced overproduction of ROS. Pro-inflammatory mediators are then produced due to intracellular signaling events, which can harm the tissue and worsen the inflammatory response. Overproduction of ROS causes oxidative stress, which causes lung damage and various disease conditions. Invasive microorganisms or hazardous substances that are inhaled repeatedly can cause an excessive amount of ROS to be produced. By starting signal transduction pathways, increased ROS generation during inflammation may cause recurrent DNA damage and apoptosis and activate proto-oncogenes. This review provides information about new targets for conducting research in related domains or target factors to prevent, control, or treat such inflammatory oxidative stress-induced inflammatory lung disorders.
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Affiliation(s)
- Sumel Ashique
- Department of Pharmaceutics, Bengal College of Pharmaceutical Sciences & Research, Durgapur, West Bengal, 713212, India.
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, 144411, India.
| | - Neeraj Mishra
- Department of Pharmaceutics, Amity Institute of Pharmacy, Amity University Madhya Pradesh (AUMP), Gwalior, MP, 474005, India
| | - Shubhrajit Mantry
- Department of Pharmaceutics, Department of Pharmacy, Sarala Birla University, Ranchi, Jharkhand, 835103, India
| | - Ashish Garg
- Department of Pharmaceutics, Guru Ramdas Khalsa Institute of Science and Technology (Pharmacy), Jabalpur, Madhya Pradesh, 483001, India
| | - Nitish Kumar
- SRM Modinagar College of Pharmacy, SRM Institute of Science and Technology (Deemed to Be University), Delhi-NCR Campus, Modinagar, Ghaziabad, Uttar Pradesh, 201204, India
| | - Madhu Gupta
- Department of Pharmaceutics, Delhi Pharmaceutical Sciences and Research University, Delhi, 110017, India
| | - Sanjeeb Kumar Kar
- Department of Pharmaceutical Chemistry, Department of Pharmacy, Sarala Birla University, Ranchi, Jharkhand, 835103, India
| | - Anas Islam
- Faculty of Pharmacy, Integral University, Lucknow, Uttar Pradesh, 226026, India
| | - Sourav Mohanto
- Department of Pharmaceutics, Yenepoya Pharmacy College & Research Centre, Yenepoya (Deemed to Be University), Mangalore, Karnataka, 575018, India.
| | - Vetriselvan Subramaniyan
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500, Subang Jaya, Selangor, Malaysia.
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Chand Dakal T, Choudhary K, Tiwari I, Yadav V, Kumar Maurya P, Kumar Sharma N. Unraveling the Triad: Hypoxia, Oxidative Stress and Inflammation in Neurodegenerative Disorders. Neuroscience 2024; 552:126-141. [PMID: 38936458 DOI: 10.1016/j.neuroscience.2024.06.021] [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: 04/12/2024] [Revised: 06/07/2024] [Accepted: 06/22/2024] [Indexed: 06/29/2024]
Abstract
The mammalian brain's complete dependence on oxygen for ATP production makes it highly susceptible to hypoxia, at high altitudes or in clinical scenarios including anemia or pulmonary disease. Hypoxia plays a crucial role in the development of various brain disorders, such as Alzheimer's, Parkinson's, and other age-related neurodegenerative diseases. On the other hand, a decrease in environmental oxygen levels, such as prolonged stays at high elevations, may have beneficial impacts on the process of ageing and the likelihood of death. Additionally, the utilization of controlled hypoxia exposure could potentially serve as a therapeutic approach for age-related brain diseases. Recent findings indicate that the involvement of HIF-1α and the NLRP3 inflammasome is of significant importance in the development of Alzheimer's disease. HIF-1α serves as a pivotal controller of various cellular reactions to oxygen deprivation, exerting influence on a multitude of physiological mechanisms such as energy metabolism and inflammatory responses. The NLRP3 plays a crucial role in the innate immune system by coordinating the initiation of inflammatory reactions through the assembly of the inflammasome complex. This review examines the information pertaining to the contrasting effects of hypoxia on the brain, highlighting both its positive and deleterious effects and molecular pathways that are involved in mediating these different effects. This study explores potential strategies for therapeutic intervention that focus on restoring cellular balance and reducing neuroinflammation, which are critical aspects in addressing this severe neurodegenerative condition and addresses crucial inquiries that warrant further future investigations.
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Affiliation(s)
- Tikam Chand Dakal
- Genome and Computational Biology Lab, Mohanlal Sukhadia University, Udaipur 313001, Rajasthan, India
| | - Kanika Choudhary
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Isha Tiwari
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Tonk 304022, Rajasthan, India
| | - Vikas Yadav
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Pawan Kumar Maurya
- Department of Biochemistry, Central University of Haryana, Mahendergarh 123031, India
| | - Narendra Kumar Sharma
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Tonk 304022, Rajasthan, India.
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Alvear-Hernandez NP, Hernández-Ramírez VI, Villegas-Pineda JC, Osorio-Trujillo JC, Guzmán-Mendoza JJ, Gallardo-Rincón D, Toledo-Leyva A, Talamás-Rohana P. Overexpression of Fut 2, 4, and 8, and nuclear localization of Fut 4 in ovarian cancer cell lines induced by ascitic fluids from epithelial ovarian cancer patients. Cell Biol Int 2024; 48:610-625. [PMID: 38263584 DOI: 10.1002/cbin.12132] [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: 03/23/2023] [Revised: 12/21/2023] [Accepted: 01/05/2024] [Indexed: 01/25/2024]
Abstract
Fucosyltransferases (Fut) regulate the fucosylation process associated with tumorogenesis in different cancer types. Ascitic fluid (AF) from patients diagnosed with advanced stage of epithelial ovarian cancer (EOC) is considered as a dynamic tumor microenvironment associated with poor prognosis. Previous studies from our laboratory showed increased fucosylation in SKOV-3 and OVCAR-3, cancer-derived cell lines, when these cells were incubated with AFs derived from patients diagnosed with EOC. In the present work we studied three fucosyltransferases (Fut 2, Fut 4, and Fut 8) in SKOV-3, OVCAR-3 and CAOV-3 cell lines in combination with five different AFs from patients diagnosed with this disease, confirming that all tested AFs increased fucosylation. Then, we demonstrate that mRNAs of these three enzymes were overexpressed in the three cell lines under treatment with AFs. SKOV-3 showed the higher overexpression of Fut 2, Fut 4, and Fut 8 in comparison with the control condition. We further confirmed, in the SKOV-3 cell line, by endpoint PCR, WB, and confocal microscopy, that the three enzymes were overexpressed, being Fut 4 the most overexpressed enzyme compared to Fut 2 and Fut 8. These enzymes were concentrated in vesicular structures with a homogeneous distribution pattern throughout the cytoplasm. Moreover, we found that among the three enzymes, only Fut 4 was located inside the nuclei. The nuclear location of Fut 4 was confirmed for the three cell lines. These results allow to propose Fut 2, Fut 4, and Fut 8 as potential targets for EOC treatment or as diagnostic tools for this disease.
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Affiliation(s)
- Nayely Paulina Alvear-Hernandez
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Gustavo A Madero, Mexico
| | | | - Julio César Villegas-Pineda
- Departamento de Microbiología y, Patología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Juan Carlos Osorio-Trujillo
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Gustavo A Madero, Mexico
| | - José Jesús Guzmán-Mendoza
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Gustavo A Madero, Mexico
| | | | - Alfredo Toledo-Leyva
- Unidad de Investigación en Virología y Cáncer, Hospital Infantil de México Federico Gómez, Instituto Nacional de Salud, Ciudad de México, Mexico
| | - Patricia Talamás-Rohana
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, Gustavo A Madero, Mexico
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Sun W, Cheng Y, Ma X, Jin Z, Zhang Q, Wang G. Photodynamic therapy upregulates expression of HIF-1α and PD-L1 in related pathways and its clinical relevance in non-small-cell lung cancer. Eur J Med Res 2024; 29:230. [PMID: 38609977 PMCID: PMC11015541 DOI: 10.1186/s40001-024-01780-0] [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: 11/02/2023] [Accepted: 03/10/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND Photodynamic therapy (PDT) is a promising interventional treatment approach that contributes to antitumor immunity. It has been reported that PDT can enhance the effectiveness of immune checkpoint inhibitors (ICIs), but its mechanism is yet unclear. Herein, we implemented bioinformatics analysis to detect common pathways and potential biomarkers in non-small cell lung cancer (NSCLC), PDT, and NSCLC immunotherapy to investigate potential links between PDT, immunotherapy and NSCLC, and their clinical impact. METHODS Differentially expressed genes in NSCLC- and NSCLC immunotherapy-related data in the GEO database were intersected with PDT-related genes in the GeneCards database to obtain candidate genes and shared pathways. Enrichment analysis and protein-protein interaction were established to identify key genes in functionally enriched pathways. The expression profiles and the prognostic significance of key genes were depicted. RESULTS Bioinformatics analysis showed that HIF-1α was screened as a prognostic gene in hypoxia, HIF-1, and PD-L1-related signaling pathways, which was associated with clinical response in NSCLC patients after PDT and immunotherapy. In vivo experiments showed that PDT could inhibit tumor growth and upregulate HIF-1α and PD-L1 expressions in NSCLC tissues with a positive correlation, which might influence the blocking activity of ICIs on the HIF-1, and PD-L1-related signaling pathways. CONCLUSIONS PDT might improve the clinical response of ICIs by upregulating tumor HIF-1α and PD-L1 expressions in NSCLC.
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Affiliation(s)
- Wen Sun
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China
| | - Yuan Cheng
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China
| | - Xiaoyu Ma
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China
| | - Zhou Jin
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China
| | - Qi Zhang
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China
| | - Guangfa Wang
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, 100034, China.
- Department of Pulmonary and Critical Care Medicine, Peking University First Hospital, No. 8 Xishiku Street, Xicheng District, Beijing, 100034, China.
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DeMichele E, Sosnowski O, Buret AG, Allain T. Regulatory Functions of Hypoxia in Host-Parasite Interactions: A Focus on Enteric, Tissue, and Blood Protozoa. Microorganisms 2023; 11:1598. [PMID: 37375100 PMCID: PMC10303274 DOI: 10.3390/microorganisms11061598] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Body tissues are subjected to various oxygenic gradients and fluctuations and hence can become transiently hypoxic. Hypoxia-inducible factor (HIF) is the master transcriptional regulator of the cellular hypoxic response and is capable of modulating cellular metabolism, immune responses, epithelial barrier integrity, and local microbiota. Recent reports have characterized the hypoxic response to various infections. However, little is known about the role of HIF activation in the context of protozoan parasitic infections. Growing evidence suggests that tissue and blood protozoa can activate HIF and subsequent HIF target genes in the host, helping or hindering their pathogenicity. In the gut, enteric protozoa are adapted to steep longitudinal and radial oxygen gradients to complete their life cycle, yet the role of HIF during these protozoan infections remains unclear. This review focuses on the hypoxic response to protozoa and its role in the pathophysiology of parasitic infections. We also discuss how hypoxia modulates host immune responses in the context of protozoan infections.
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Affiliation(s)
- Emily DeMichele
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Olivia Sosnowski
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Andre G. Buret
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Thibault Allain
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada; (E.D.); (O.S.); (A.G.B.)
- Inflammation Research Network, University of Calgary, Calgary, AB T2N 1N4, Canada
- Host-Parasite Interactions, University of Calgary, Calgary, AB T2N 1N4, Canada
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Muthamil S, Kim HY, Jang HJ, Lyu JH, Shin UC, Go Y, Park SH, Lee HG, Park JH. Understanding the relationship between cancer associated cachexia and hypoxia-inducible factor-1. Biomed Pharmacother 2023; 163:114802. [PMID: 37146421 DOI: 10.1016/j.biopha.2023.114802] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/07/2023] Open
Abstract
Cancer-associated cachexia (CAC) is a multifactorial disorder characterized by an unrestricted loss of body weight as a result of muscle and adipose tissue atrophy. Cachexia is influenced by several factors, including decreased metabolic activity and food intake, an imbalance between energy uptake and expenditure, excessive catabolism, and inflammation. Cachexia is highly associated with all types of cancers responsible for more than half of cancer-related mortalities worldwide. In healthy individuals, adipose tissue significantly regulates energy balance and glucose homeostasis. However, in metastatic cancer patients, CAC occurs mainly because of an imbalance between muscle protein synthesis and degradation which are organized by certain extracellular ligands and associated signaling pathways. Under hypoxic conditions, hypoxia-inducible factor-1 (HIF-1α) accumulated and translocated to the nucleus and activate numerous genes involved in cell survival, invasion, angiogenesis, metastasis, metabolic reprogramming, and cancer stemness. On the other hand, the ubiquitination proteasome pathway is inhibited during low O2 levels which promote muscle wasting in cancer patients. Therefore, understanding the mechanism of the HIF-1 pathway and its metabolic adaptation to biomolecules is important for developing a novel therapeutic method for cancer and cachexia therapy. Even though many HIF inhibitors are already in a clinical trial, their mechanism of action remains unknown. With this background, this review summarizes the basic concepts of cachexia, the role of inflammatory cytokines, pathways connected with cachexia with special reference to the HIF-1 pathway and its regulation, metabolic changes, and inhibitors of HIFs.
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Affiliation(s)
- Subramanian Muthamil
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju, Jeollanam-do, 58245, Republic of Korea
| | - Hyun Yong Kim
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju, Jeollanam-do, 58245, Republic of Korea
| | - Hyun-Jun Jang
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju, Jeollanam-do, 58245, Republic of Korea
| | - Ji-Hyo Lyu
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju, Jeollanam-do, 58245, Republic of Korea
| | - Ung Cheol Shin
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju, Jeollanam-do, 58245, Republic of Korea
| | - Younghoon Go
- Korean Medicine (KM)-application Center, Korea Institute of Oriental Medicine, Daegu, Republic of Korea
| | - Seong-Hoon Park
- Genetic and Epigenetic Toxicology Research Group, Korea Institute of Toxicology, Daejeon 34141, Republic of Korea
| | - Hee Gu Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Jun Hong Park
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju, Jeollanam-do, 58245, Republic of Korea; University of Science & Technology (UST), KIOM campus, Korean Convergence Medicine Major, Daejeon 34054, Republic of Korea.
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Hashimoto Y, Tsuzuki-Nakao T, Kida N, Matsuo Y, Maruyama T, Okada H, Hirota K. Inflammatory Cytokine-Induced HIF-1 Activation Promotes Epithelial-Mesenchymal Transition in Endometrial Epithelial Cells. Biomedicines 2023; 11:biomedicines11010210. [PMID: 36672719 PMCID: PMC9855875 DOI: 10.3390/biomedicines11010210] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
The endometrium undergoes repeated proliferation and shedding during the menstrual cycle. Significant changes to this environment include fluctuations in the partial pressure of oxygen, exposure to a high-cytokine environment associated with intrauterine infection, and inflammation. Chronic endometritis is a condition wherein mild inflammation persists in the endometrium and is one of the causes of implantation failure and miscarriage in early pregnancy. It is thought that the invasion of embryos into the endometrium requires epithelial-mesenchymal transition (EMT)-associated changes in the endometrial epithelium. However, the effects of inflammation on the endometrium remain poorly understood. In this study, we investigated the effects of the intrauterine oxygen environment, hypoxia-inducible factor (HIF), and inflammation on the differentiation and function of endometrial epithelial cells. We elucidated the ways in which inflammatory cytokines affect HIF activity and EMT in an immortalized cell line (EM-E6/E7/TERT) derived from endometrial epithelium. Pro-inflammatory cytokines caused significant accumulation of HIF-1α protein, increased HIF-1α mRNA levels, and enhanced hypoxia-induced accumulation of HIF-1α protein. The combined effect of inflammatory cytokines and hypoxia increased the expression of EMT-inducing factors and upregulated cell migration. Our findings indicate that pro-inflammatory factors, including cytokines and LPS, work synergistically with hypoxia to activate HIF-1 and promote EMT in endometrial epithelial cells.
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Affiliation(s)
- Yoshiko Hashimoto
- Department of Obstetrics and Gynecology, Kansai Medical University, 2-5-1 Shinmachi, Hirakata 573-1191, Japan
| | - Tomoko Tsuzuki-Nakao
- Department of Obstetrics and Gynecology, Kansai Medical University, 2-5-1 Shinmachi, Hirakata 573-1191, Japan
| | - Naoko Kida
- Department of Obstetrics and Gynecology, Kansai Medical University, 2-5-1 Shinmachi, Hirakata 573-1191, Japan
| | - Yoshiyuki Matsuo
- Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, 2-5-1 Shinmachi, Hirakata 573-1010, Japan
| | - Tetsuo Maruyama
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Hidetaka Okada
- Department of Obstetrics and Gynecology, Kansai Medical University, 2-5-1 Shinmachi, Hirakata 573-1191, Japan
| | - Kiichi Hirota
- Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, 2-5-1 Shinmachi, Hirakata 573-1010, Japan
- Correspondence: ; Tel.: +81-72-804-0101
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Iacobini C, Vitale M, Haxhi J, Pesce C, Pugliese G, Menini S. Mutual Regulation between Redox and Hypoxia-Inducible Factors in Cardiovascular and Renal Complications of Diabetes. Antioxidants (Basel) 2022; 11:2183. [PMID: 36358555 PMCID: PMC9686572 DOI: 10.3390/antiox11112183] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 08/30/2023] Open
Abstract
Oxidative stress and hypoxia-inducible factors (HIFs) have been implicated in the pathogenesis of diabetic cardiovascular and renal diseases. Reactive oxygen species (ROS) mediate physiological and pathophysiological processes, being involved in the modulation of cell signaling, differentiation, and survival, but also in cyto- and genotoxic damage. As master regulators of glycolytic metabolism and oxygen homeostasis, HIFs have been largely studied for their role in cell survival in hypoxic conditions. However, in addition to hypoxia, other stimuli can regulate HIFs stability and transcriptional activity, even in normoxic conditions. Among these, a regulatory role of ROS and their byproducts on HIFs, particularly the HIF-1α isoform, has received growing attention in recent years. On the other hand, HIF-1α and HIF-2α exert mutually antagonistic effects on oxidative damage. In diabetes, redox-mediated HIF-1α deregulation contributes to the onset and progression of cardiovascular and renal complications, and recent findings suggest that deranged HIF signaling induced by hyperglycemia and other cellular stressors associated with metabolic disorders may cause mitochondrial dysfunction, oxidative stress, and inflammation. Understanding the mechanisms of mutual regulation between HIFs and redox factors and the specific contribution of the two main isoforms of HIF-α is fundamental to identify new therapeutic targets for vascular complications of diabetes.
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Affiliation(s)
- Carla Iacobini
- Department of Clinical and Molecular Medicine, “La Sapienza” University, 00189 Rome, Italy
| | - Martina Vitale
- Department of Clinical and Molecular Medicine, “La Sapienza” University, 00189 Rome, Italy
| | - Jonida Haxhi
- Department of Clinical and Molecular Medicine, “La Sapienza” University, 00189 Rome, Italy
| | - Carlo Pesce
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetic and Maternal Infantile Sciences (DINOGMI), Department of Excellence of MIUR, University of Genoa Medical School, 16132 Genoa, Italy
| | - Giuseppe Pugliese
- Department of Clinical and Molecular Medicine, “La Sapienza” University, 00189 Rome, Italy
| | - Stefano Menini
- Department of Clinical and Molecular Medicine, “La Sapienza” University, 00189 Rome, Italy
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Wang D, Ji Y, Wang R, Cheng K, Liu L, Wu N, Tang Q, Zheng X, Li J, Zhu Z, Wang Q, Zhang X, Li R, Pan J, Sui Z, Yuan Y. Lycopene Ameliorates Hypoxic Pulmonary Hypertension via Suppression of Oxidative Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9179427. [PMID: 39282152 PMCID: PMC11401662 DOI: 10.1155/2022/9179427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 08/24/2022] [Accepted: 09/09/2022] [Indexed: 09/18/2024]
Abstract
Hypoxic pulmonary hypertension (HPH) is a progressive cardiopulmonary system disease characterized by pulmonary vascular remodeling. Its occurrence and progression are closely related to oxidative stress. Lycopene, extracted from red vegetables and fruits, exhibits a particularly high antioxidant capacity that is beneficial for cardiovascular diseases. Nevertheless, the role and mechanism of lycopene in HPH remain unknown. Here, we found that lycopene reversed the elevated right ventricular systolic pressure (RVSP), right ventricular hypertrophy, and pulmonary vascular remodeling induced by hypoxia in rats. In vitro, lycopene caused lower proliferation and migration of PASMCs, with higher apoptosis. Consistent with the antiproliferative result of lycopene on hypoxic PASMCs, the hippo signaling pathway associated with cell growth was activated. Furthermore, lycopene reduced malondialdehyde (MDA) levels and enhanced superoxide dismutase (SOD) activity in the lungs and serum of rats under hypoxia conditions. The expression of NOX4 in the lungs was also significantly decreased. Hypoxic PASMCs subjected to lycopene showed decreased reactive oxygen species (ROS) production and NOX4 expression. Importantly, lycopene repressed HIF-1α expression both in the lungs and PASMCs in response to hypoxia in the absence of a significant change of HIF-1α mRNA. Compared with 2ME2 (a HIF-1α inhibitor) alone treatment, lycopene treatment did not significantly change PASMC proliferation, NOX4 expression, and ROS production after 2ME2 blocked HIF-1α, suggesting the inhibitory effect of lycopene on HIF-1α-NOX4-ROS axis and the targeted effect on HIF-1α. After CHX blocked protein synthesis, lycopene promoted the protein degradation of HIF-1α. MG-132, a proteasome inhibitor, notably reversed the decrease in HIF-1α protein level induced by lycopene in response to hypoxia. Therefore, lycopene suppressed hypoxia-induced oxidative stress through HIF-1α-NOX4-ROS axis, thereby alleviating HPH. Our findings will provide a new research direction for clinical HPH therapies.
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Affiliation(s)
- Dingyou Wang
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Yuke Ji
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Rui Wang
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Ke Cheng
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Liang Liu
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Na Wu
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Qing Tang
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Xu Zheng
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Junxia Li
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Zhilong Zhu
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Qinghua Wang
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Xueyan Zhang
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Runbo Li
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Jinjin Pan
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
| | - Zheng Sui
- Department of Vasculocardiology, The Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Yuhui Yuan
- The Second Affiliated Hospital, Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116000, China
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11
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Lai QWS, Fan Q, Zheng BZ, Chen Y, Dong TT, Tsim KWK. Edible bird’s nest, an Asian health food supplement, possesses anti-inflammatory responses in restoring the symptoms of atopic dermatitis: An analysis of signaling cascades. Front Pharmacol 2022; 13:941413. [PMID: 36204219 PMCID: PMC9531170 DOI: 10.3389/fphar.2022.941413] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/22/2022] [Indexed: 11/24/2022] Open
Abstract
Edible bird’s nest (EBN) is a Chinese delicacy possessing skin rejuvenating functions. To verify skin anti-inflammatory function of EBN, water extract and enzymatic digest of EBN, as well as the major sialic acid, N-acetyl neuraminic acid (NANA), were probed in TNF-α-treated HaCaT keratinocytes. The mRNA expressions of pro-inflammatory cytokines, e.g., IL-1β, IL-6, TNF-α, and an enzyme responsible for inflammatory response, i.e., Cox-2, as well as filaggrin and filaggrin-2, were markedly altered after treating with different preparations of EBN. The EBN-mediated responses could be accounted by its robust reduction of reactive oxygen species (ROS), NF-κB signaling and phosphorylation of p38 MAPK and JNK, as triggered by TNF-α-induced inflammation. The anti-inflammatory response of EBN was further supported in animal model. In 2,4-dinitrochlorobenzene (DNCB)-induced dermatitic mice, the effects on skin thickness, severity level of damage and scratching behavior, exerted by DNCB, were reversed after EBN treatments, in dose-dependent manners. In parallel, the levels of immune cells and pro-inflammatory cytokines in dermatitic skin were markedly reduced by treatment of EBN preparations. In general, NANA and enzymatic digest of EBN showed better anti-inflammatory responses in both models of in vitro and in vivo. These lines of evidence therefore suggest the possible application of EBN in treating atopic dermatitis.
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Affiliation(s)
- Queenie Wing Sze Lai
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, China
- Division of Life Science and Center for Chinese Medicine R&D, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, Hong Kong SAR, China
| | - Qunyan Fan
- Bird’s Nest Research Institute of Yan Palace, Xiamen Yan Palace Seelong Food Co., Ltd., Xiamen, Fujian, China
| | - Brody Zhongyu Zheng
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, China
- Division of Life Science and Center for Chinese Medicine R&D, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, Hong Kong SAR, China
| | - Yanxian Chen
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, China
- Division of Life Science and Center for Chinese Medicine R&D, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, Hong Kong SAR, China
| | - Tina Tingxia Dong
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, China
- Division of Life Science and Center for Chinese Medicine R&D, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, Hong Kong SAR, China
| | - Karl Wah Keung Tsim
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, China
- Division of Life Science and Center for Chinese Medicine R&D, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, Hong Kong SAR, China
- *Correspondence: Karl Wah Keung Tsim,
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12
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Ferrer JLM, Garcia RL. Antioxidant Systems, lncRNAs, and Tunneling Nanotubes in Cell Death Rescue from Cigarette Smoke Exposure. Cells 2022; 11:2277. [PMID: 35892574 PMCID: PMC9330437 DOI: 10.3390/cells11152277] [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: 06/10/2022] [Revised: 07/17/2022] [Accepted: 07/19/2022] [Indexed: 12/10/2022] Open
Abstract
Cigarette smoke is a rich source of carcinogens and reactive oxygen species (ROS) that can damage macromolecules including DNA. Repair systems can restore DNA integrity. Depending on the duration or intensity of stress signals, cells may utilize various survival and adaptive mechanisms. ROS levels are kept in check through redundant detoxification processes controlled largely by antioxidant systems. This review covers and expands on the mechanisms available to cigarette smoke-exposed cancer cells for restoring the redox balance. These include multiple layers of transcriptional control, each of which is posited to be activated upon reaching a particular stress threshold, among them the NRF2 pathway, the AP-1 and NF-kB pathways, and, finally, TP53, which triggers apoptosis if extreme toxicity is reached. The review also discusses long noncoding RNAs, which have been implicated recently in regulating oxidative stress-with roles in ROS detoxification, the inflammatory response, oxidative stress-induced apoptosis, and mitochondrial oxidative phosphorylation. Lastly, the emerging roles of tunneling nanotubes in providing additional mechanisms for metabolic rescue and the regulation of redox imbalance are considered, further highlighting the expanded redox reset arsenal available to cells.
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Affiliation(s)
| | - Reynaldo L. Garcia
- Disease Molecular Biology and Epigenetics Laboratory, National Institute of Molecular Biology and Biotechnology, University of the Philippines Diliman, Quezon City 1101, Philippines;
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13
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Jing X, Hu H, Sun Y, Yu B, Cong H, Shen Y. The Intracellular and Extracellular Microenvironment of Tumor Site: The Trigger of Stimuli-Responsive Drug Delivery Systems. SMALL METHODS 2022; 6:e2101437. [PMID: 35048560 DOI: 10.1002/smtd.202101437] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/29/2021] [Indexed: 06/14/2023]
Abstract
The tumor microenvironment (TME), including intracellular and extracellular microenvironment, contains many biochemical indicators (such as acidity/alkalinity, oxygen content, and enzymatic activity) that are different from the normal physiological environment. These abnormal biochemical indicators can accelerate the heterogeneity of tumors, but on the other hand, they also provide opportunities for the design of intelligent drug delivery systems (DDSs). The TME-responsive DDSs have shown great potential in reducing the side effects of chemotherapy and improving the curative effect of tumors. In this review, the abnormal biochemical indicators of TME are introduced in detail from both the extracellular and intracellular aspects. In view of the various physiological barriers encountered during drug delivery, the strategy of constructing TME-responsive DDSs is discussed. By summarizing the typical research progress, the authors prospect the development of TME-responsive DDS in the future.
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Affiliation(s)
- Xiaodong Jing
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China
| | - Hao Hu
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China
| | - Yanzhen Sun
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China
| | - Bing Yu
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, 266071, China
| | - Hailin Cong
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, 266071, China
| | - Youqing Shen
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Center for Bionanoengineering, and Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
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14
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Henrik SZŐKE, István BÓKKON, David M, Jan V, Ágnes K, Zoltán K, Ferenc F, Tibor K, László SL, Ádám D, Odilia M, Andrea K. The innate immune system and fever under redox control: A Narrative Review. Curr Med Chem 2022; 29:4324-4362. [DOI: 10.2174/0929867329666220203122239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 11/21/2021] [Accepted: 12/07/2021] [Indexed: 11/22/2022]
Abstract
ABSTRACT:
In living cells, redox potential is vitally important for normal physiological processes that are closely regulated by antioxidants, free amino acids and proteins that either have reactive oxygen and nitrogen species capture capability or can be compartmentalized. Although hundreds of experiments support the regulatory role of free radicals and their derivatives, several authors continue to claim that these perform only harmful and non-regulatory functions. In this paper we show that countless intracellular and extracellular signal pathways are directly or indirectly linked to regulated redox processes. We also briefly discuss how artificial oxidative stress can have important therapeutic potential and the possible negative effects of popular antioxidant supplements.
Next, we present the argument supported by a large number of studies that several major components of innate immunity, as well as fever, is also essentially associated with regulated redox processes. Our goal is to point out that the production of excess or unregulated free radicals and reactive species can be secondary processes due to the perturbed cellular signal pathways. However, researchers on pharmacology should consider the important role of redox mechanisms in the innate immune system and fever.
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Affiliation(s)
- SZŐKE Henrik
- Doctoral School of Health Sciences, University of Pécs, Pécs, Hungary
| | - BÓKKON István
- Neuroscience and Consciousness Research Department, Vision Research Institute,
Lowell, MA, USA
| | - martin David
- Department of Human Medicine, University Witten/Herdecke, Witten, Germany
| | - Vagedes Jan
- University Children’s Hospital, Tuebingen University, Tuebingen, Germany
| | - kiss Ágnes
- Doctoral School of Health Sciences, University of Pécs, Pécs, Hungary
| | - kovács Zoltán
- Doctoral School of Health Sciences, University of Pécs, Pécs, Hungary
| | - fekete Ferenc
- Department of Nyerges Gábor Pediatric Infectology, Heim Pál National Pediatric Institute, Budapest, Hungary
| | - kocsis Tibor
- Department of Clinical Governance, Hungarian National Ambulance Service, Budapest, Hungary
| | | | | | | | - kisbenedek Andrea
- Doctoral School of Health Sciences, University of Pécs, Pécs, Hungary
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15
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Lopez-Pascual A, Trayhurn P, Martínez JA, González-Muniesa P. Oxygen in Metabolic Dysfunction and Its Therapeutic Relevance. Antioxid Redox Signal 2021; 35:642-687. [PMID: 34036800 DOI: 10.1089/ars.2019.7901] [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] [Indexed: 11/13/2022]
Abstract
Significance: In recent years, a number of studies have shown altered oxygen partial pressure at a tissue level in metabolic disorders, and some researchers have considered oxygen to be a (macro) nutrient. Oxygen availability may be compromised in obesity and several other metabolism-related pathological conditions, including sleep apnea-hypopnea syndrome, the metabolic syndrome (which is a set of conditions), type 2 diabetes, cardiovascular disease, and cancer. Recent Advances: Strategies designed to reduce adiposity and its accompanying disorders have been mainly centered on nutritional interventions and physical activity programs. However, novel therapies are needed since these approaches have not been sufficient to counteract the worldwide increasing rates of metabolic disorders. In this regard, intermittent hypoxia training and hyperoxia could be potential treatments through oxygen-related adaptations. Moreover, living at a high altitude may have a protective effect against the development of abnormal metabolic conditions. In addition, oxygen delivery systems may be of therapeutic value for supplying the tissue-specific oxygen requirements. Critical Issues: Precise in vivo methods to measure oxygenation are vital to disentangle some of the controversies related to this research area. Further, it is evident that there is a growing need for novel in vitro models to study the potential pathways involved in metabolic dysfunction to find appropriate therapeutic targets. Future Directions: Based on the existing evidence, it is suggested that oxygen availability has a key role in obesity and its related comorbidities. Oxygen should be considered in relation to potential therapeutic strategies in the treatment and prevention of metabolic disorders. Antioxid. Redox Signal. 35, 642-687.
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Affiliation(s)
- Amaya Lopez-Pascual
- Department of Nutrition, Food Science and Physiology, School of Pharmacy and Nutrition, Centre for Nutrition Research, University of Navarra, Pamplona, Spain.,Neuroendocrine Cell Biology, Lund University Diabetes Centre, Lund University, Malmö, Sweden
| | - Paul Trayhurn
- Obesity Biology Unit, University of Liverpool, Liverpool, United Kingdom.,Clore Laboratory, The University of Buckingham, Buckingham, United Kingdom
| | - J Alfredo Martínez
- Department of Nutrition, Food Science and Physiology, School of Pharmacy and Nutrition, Centre for Nutrition Research, University of Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain.,CIBERobn Physiopathology of Obesity and Nutrition, Centre of Biomedical Research Network, ISCIII, Madrid, Spain.,Precision Nutrition and Cardiometabolic Health, IMDEA Food, Madrid Institute for Advanced Studies, Madrid, Spain
| | - Pedro González-Muniesa
- Department of Nutrition, Food Science and Physiology, School of Pharmacy and Nutrition, Centre for Nutrition Research, University of Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain.,CIBERobn Physiopathology of Obesity and Nutrition, Centre of Biomedical Research Network, ISCIII, Madrid, Spain
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16
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GDNF requires HIF-1α and RET activation for suppression of programmed cell death of enteric neurons by metabolic challenge. Mol Cell Neurosci 2021; 115:103655. [PMID: 34273501 DOI: 10.1016/j.mcn.2021.103655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/24/2021] [Accepted: 07/11/2021] [Indexed: 01/21/2023] Open
Abstract
Intestinal inflammation challenges both function and structure of the enteric nervous system (ENS). In the animal model of TNBS-induced colitis, an influx of immune cells causes early neuron death in the neuromuscular layers, followed by axonal outgrowth from surviving neurons associated with upregulation of the neurotrophin GDNF (glial cell line-derived neurotrophic factor). Inflammation could involve ischemia and metabolic inhibition leading to neuronal damage, which might be countered by a protective action of GDNF. This was examined in a primary co-culture model of rat myenteric neurons and smooth muscle, where metabolic challenge was caused by dinitrophenol (DNP), O-methyl glucose (OMG) or hypoxia. These caused the specific loss of 50% of neurons by 24 h that was blocked by GDNF both in vitro and in whole mounts. Neuroprotection was lost with RET inhibition by vandetanib or GSK3179106, which also caused neuron loss in untreated controls. Thus, both basal and upregulated GDNF levels signal via RET for neuronal survival. This includes a key role for upregulation of HIF-1α, which was detected in neurons in colitis, since the inhibitor chetomin blocked rescue by GDNF or ischemic pre-conditioning in vitro. In DNP-treated co-cultures, neuron death was not inhibited by zVAD, necrosulfonamide or GSK872, and cleaved caspase-3 or - 8 were undetectable. However, combinations of inhibitors or the RIP1kinase inhibitor Nec-1 prevented neuronal death, evidence for RIPK1-dependent necroptosis. Therefore, inflammation challenges enteric neurons via ischemia, while GDNF is neuroprotective, activating RET and HIF-1α to limit programmed cell death. This may support novel strategies to address recurrent inflammation in IBD.
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17
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Chen YC, Sung HC, Chuang TY, Lai TC, Lee TL, Lee CW, Lee IT, Chen YL. Vitamin D 3 decreases TNF-α-induced inflammation in lung epithelial cells through a reduction in mitochondrial fission and mitophagy. Cell Biol Toxicol 2021; 38:427-450. [PMID: 34255241 PMCID: PMC8275919 DOI: 10.1007/s10565-021-09629-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 06/24/2021] [Indexed: 01/14/2023]
Abstract
Previous work has shown an association between vitamin D3 deficiency and an increased risk for acquiring various inflammatory diseases. Vitamin D3 can reduce morbidity and mortality in these patients via different mechanisms. Lung inflammation is an important event in the initiation and development of respiratory disorders. However, the anti-inflammatory effects of vitamin D3 and the underlying mechanisms remained to be determined. The purpose of this study was to examine the effects and mechanisms of action of vitamin D3 (Vit. D) on the expression of intercellular adhesion molecule-1 (ICAM-1) in vitro and in vivo with or without tumor necrosis factor α (TNF-α) treatment. Pretreatment with Vit. D reduced the expression of ICAM-1 and leukocyte adhesion in TNF-α-treated A549 cells. TNF-α increased the accumulation of mitochondrial reactive oxygen species (mtROS), while Vit. D reduced this effect. Pretreatment with Vit. D attenuated TNF-α-induced mitochondrial fission, as shown by the increased expression of mitochondrial fission factor (Mff), phosphorylated dynamin-related protein 1 (p-DRP1), and mitophagy-related proteins (BCL2/adenovirus E1B 19 kDa protein-interacting protein 3, Bnip3) in A549 cells. Inhibition of DRP1 or Mff significantly decreased ICAM-1 expression. In addition, we found that Vit. D decreased TNF-α-induced ICAM-1 expression, mitochondrial fission, and mitophagy via the AKT and NF-κB pathways. Moreover, ICAM-1 expression, mitochondrial fission, and mitophagy were increased in the lung tissues of TNF-α-treated mice, while Vit. D supplementation reduced these effects. In this study, we elucidated the mechanisms by which Vit. D reduces the expression of adhesion molecules in models of airway inflammation. Vit. D might be served as a novel therapeutic agent for the targeting of epithelial activation in lung inflammation.
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Affiliation(s)
- Yu-Chen Chen
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, No. 1, Sec 1, Ren-Ai Road, Taipei, Taiwan
| | - Hsin-Ching Sung
- Department of Anatomy, Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, No. 259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, Taiwan. .,Department of Dermatology, Aesthetic Medical Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan.
| | - Tzu-Yi Chuang
- Division of Pulmonary Medicine, Department of Internal Medicine, Min-Sheng General Hospital, No. 168 Jin-Kuo Road, Taoyuan City, Taiwan. .,Department of Internal Medicine, College of Medicine and National Taiwan University Hospital, Taipei, Taiwan.
| | - Tsai-Chun Lai
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, No. 1, Sec 1, Ren-Ai Road, Taipei, Taiwan
| | - Tzu-Lin Lee
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, No. 1, Sec 1, Ren-Ai Road, Taipei, Taiwan
| | - Chiang-Wen Lee
- Department of Nursing, Division of Basic Medical Sciences, and Chronic Diseases and Health Promotion Research Center, Chang Gung University of Science and Technology, Chiayi, Taiwan.,Research Center for Industry of Human Ecology and Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Taoyuan, Taiwan.,Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - I-Ta Lee
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yuh-Lien Chen
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, No. 1, Sec 1, Ren-Ai Road, Taipei, Taiwan.
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18
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Wang L, Wang Z, Yang Z, Yang K, Yang H. Study of the Active Components and Molecular Mechanism of Tripterygium wilfordii in the Treatment of Diabetic Nephropathy. Front Mol Biosci 2021; 8:664416. [PMID: 34164430 PMCID: PMC8215273 DOI: 10.3389/fmolb.2021.664416] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/20/2021] [Indexed: 12/19/2022] Open
Abstract
We aimed to explore the active ingredients and molecular mechanism of Tripterygium wilfordii (TW) in the treatment of diabetic nephropathy (DN) through network pharmacology and molecular biology. First, the active ingredients and potential targets of TW were obtained through the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP) and related literature materials, and Cytoscape 3.7.2 software was used to construct the active ingredient-target network diagram of TW. Second, the target set of DN was obtained through the disease database, and the potential targets of TW in the treatment of DN were screened through a Venn diagram. A protein interaction network diagram (PPI) was constructed with the help of the String platform and Cytoscape 3.7.2. Third, the ClueGO plug-in tool was used to enrich the GO biological process and the KEGG metabolic pathway. Finally, molecular docking experiments and cell pathway analyses were performed. As a result, a total of 52 active ingredients of TW were screened, and 141 predicted targets and 49 target genes related to DN were identified. The biological process of GO is mediated mainly through the regulation of oxygen metabolism, endothelial cell proliferation, acute inflammation, apoptotic signal transduction pathway, fibroblast proliferation, positive regulation of cyclase activity, adipocyte differentiation and other biological processes. KEGG enrichment analysis showed that the main pathways involved were AGE-RAGE, vascular endothelial growth factor, HIF-1, IL-17, relaxin signalling pathway, TNF, Fc epsilon RI, insulin resistance and other signaling pathways. It can be concluded that TW may treat DN by reducing inflammation, reducing antioxidative stress, regulating immunity, improving vascular disease, reducing insulin resistance, delaying renal fibrosis, repairing podocytes, and reducing cell apoptosis, among others, with multicomponent, multitarget and multisystem characteristics.
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Affiliation(s)
- Lin Wang
- Graduate School, First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zheyi Wang
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Zhihua Yang
- Graduate School, First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Kang Yang
- Graduate School, First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Hongtao Yang
- Graduate School, First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
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19
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Jayaram A, Deer E, Amaral LM, Campbell N, Vaka VR, Cunningham M, Ibrahim T, Cornelius DC, LaMarca BB. The role of tumor necrosis factor in triggering activation of natural killer cell, multi-organ mitochondrial dysfunction and hypertension during pregnancy. Pregnancy Hypertens 2021; 24:65-72. [PMID: 33677421 PMCID: PMC8681863 DOI: 10.1016/j.preghy.2021.02.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 12/13/2020] [Accepted: 02/04/2021] [Indexed: 11/24/2022]
Abstract
Pre-eclampsia (PE) is a hypertensive disorder of pregnancy associated with chronic inflammation, mitochondrial (mt) dysfunction and fetal demise. Natural Killer cells (NK cells) are critical for the innate immune response against tumors or infection by disrupting cellular mt function and causing cell death. Although NK cells can be stimulated by Tumor necrosis factor alpha (TNF-α), we don't know the role of TNF-α on NK cell mediated mt dysfunction during PE. Our objective was to determine if mechanisms of TNF-α induced hypertension included activation of NK cells and multi-organ mt dysfunction during pregnancy. Pregnant rats were divided into 2 groups: normal pregnant (NP) (n = 18) and NP + TNF-α (n = 18). On gestational day 14, TNF-α (50 ng/ml) was infused via mini-osmotic pump and on day 18, carotid artery catheters were inserted. Blood pressure (MAP) and samples were collected on day 19. TNF-α increased MAP (109 ± 2 vs 100 ± 2, p < 0.05), circulating cytolytic NK cells (0.771 ± 0.328 vs.0.008 ± 0.003% gated, <0.05) and fetal reabsorptions compared to NP rats. Moreover, TNF-α caused mtROS in the placenta (12976 ± 7038 vs 176.9 ± 68.04% fold, p < 0.05) and in the kidney (2191 ± 1027 vs 816 ± 454.7% fold, p < 0.05) compared to NP rats. TNF-α induced hypertension is associated fetal demise, activation of NK cells and multi-organ mt dysfunction which could be mechanisms for fetal demise and hypertension. Understanding of the mechanisms by which TNF-α causes pathology is important for the use of anti-TNF-α therapeutic agents in pregnancies complicated by PE.
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Affiliation(s)
- Aswathi Jayaram
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Evangeline Deer
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Lorena M Amaral
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Nathan Campbell
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Venkata Ramana Vaka
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Mark Cunningham
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Tarek Ibrahim
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Denise C Cornelius
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States
| | - Babbette B LaMarca
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, N State St, Jackson, MS 39216, United States.
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20
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Role of Oxidative Stress in Reperfusion following Myocardial Ischemia and Its Treatments. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6614009. [PMID: 34055195 PMCID: PMC8149218 DOI: 10.1155/2021/6614009] [Citation(s) in RCA: 110] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/21/2021] [Accepted: 04/29/2021] [Indexed: 12/15/2022]
Abstract
Myocardial ischemia is a disease with high morbidity and mortality, for which reperfusion is currently the standard intervention. However, the reperfusion may lead to further myocardial damage, known as myocardial ischemia/reperfusion injury (MI/RI). Oxidative stress is one of the most important pathological mechanisms in reperfusion injury, which causes apoptosis, autophagy, inflammation, and some other damage in cardiomyocytes through multiple pathways, thus causing irreversible cardiomyocyte damage and cardiac dysfunction. This article reviews the pathological mechanisms of oxidative stress involved in reperfusion injury and the interventions for different pathways and targets, so as to form systematic treatments for oxidative stress-induced myocardial reperfusion injury and make up for the lack of monotherapy.
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21
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Ways into Understanding HIF Inhibition. Cancers (Basel) 2021; 13:cancers13010159. [PMID: 33466454 PMCID: PMC7796500 DOI: 10.3390/cancers13010159] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 12/29/2020] [Accepted: 12/31/2020] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Cancer cells adapt to hypoxia, survive, and grow. To that aim, they engage hypoxia-inducible pathways. These pathways are under intense investigation in search of new therapies to interfere with signaling components to kill cancer cells. Nowadays, new technologies enable more in-depth studies of hypoxia-induced signaling including protein–protein interaction and transcriptional processes, as well as the mode of action of different inhibitors. In this review, we give insight into useful techniques for studying the components of the hypoxia-inducible pathway and current inhibitors. Abstract Hypoxia is a key characteristic of tumor tissue. Cancer cells adapt to low oxygen by activating hypoxia-inducible factors (HIFs), ensuring their survival and continued growth despite this hostile environment. Therefore, the inhibition of HIFs and their target genes is a promising and emerging field of cancer research. Several drug candidates target protein–protein interactions or transcription mechanisms of the HIF pathway in order to interfere with activation of this pathway, which is deregulated in a wide range of solid and liquid cancers. Although some inhibitors are already in clinical trials, open questions remain with respect to their modes of action. New imaging technologies using luminescent and fluorescent methods or nanobodies to complement widely used approaches such as chromatin immunoprecipitation may help to answer some of these questions. In this review, we aim to summarize current inhibitor classes targeting the HIF pathway and to provide an overview of in vitro and in vivo techniques that could improve the understanding of inhibitor mechanisms. Unravelling the distinct principles regarding how inhibitors work is an indispensable step for efficient clinical applications and safety of anticancer compounds.
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22
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Abstract
Neuroanatomic and functional studies show the paraventricular (PVN) of the hypothalamus to have a central role in the autonomic control that supports cardiovascular regulation. Direct and indirect projections from the PVN preautonomic neurons to the sympathetic preganglionic neurons in the spinal cord modulate sympathetic activity. The preautonomic neurons of the PVN adjust their level of activation in response to afferent signals arising from peripheral viscerosensory receptors relayed through the nucleus tractus solitarius. The prevailing sympathetic tone is a balance between excitatory and inhibitory influences that arises from the preautonomic PVN neurons. Under physiologic conditions, tonic sympathetic inhibition driven by a nitric oxide-γ-aminobutyric acid-mediated mechanism is dominant, but in pathologic situation such as heart failure there is a switch from inhibition to sympathoexcitation driven by glutamate and angiotensin II. Angiotensin II, reactive oxygen species, and hypoxia as a result of myocardial infarction/ischemia alter the tightly regulated posttranslational protein-protein interaction of CAPON (carboxy-terminal postsynaptic density protein ligand of neuronal nitric oxide synthase (NOS1)) and PIN (protein inhibitor of NOS1) signaling mechanism. Within the preautonomic neurons of the PVN, the disruption of CAPON and PIN signaling leads to a downregulation of NOS1 expression and reduced NO bioavailability. These data support the notion that CAPON-PIN dysregulation of NO bioavailability is a major contributor to the pathogenesis of sympathoexcitation in heart failure.
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Affiliation(s)
- Susan Pyner
- Department of Biosciences, Durham University, Durham, United Kingdom.
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23
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Basak D, Uddin MN, Hancock J. The Role of Oxidative Stress and Its Counteractive Utility in Colorectal Cancer (CRC). Cancers (Basel) 2020; 12:E3336. [PMID: 33187272 PMCID: PMC7698080 DOI: 10.3390/cancers12113336] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/06/2020] [Accepted: 11/08/2020] [Indexed: 12/12/2022] Open
Abstract
An altered redox status accompanied by an elevated generation of reactive oxygen/nitrogen species (ROS/RNS) has been implicated in a number of diseases including colorectal cancer (CRC). CRC, being one of the most common cancers worldwide, has been reported to be associated with multiple environmental and lifestyle factors (e.g., dietary habits, obesity, and physical inactivity) and harboring heightened oxidative stress that results in genomic instability. Although under normal condition ROS regulate many signal transduction pathways including cell proliferation and survival, overwhelming of the antioxidant capacity due to metabolic abnormalities and oncogenic signaling leads to a redox adaptation response that imparts drug resistance. Nevertheless, excessive reliance on elevated production of ROS makes the tumor cells increasingly vulnerable to further ROS insults, and the abolition of such drug resistance through redox perturbation could be instrumental to preferentially eliminate them. The goal of this review is to demonstrate the evidence that links redox stress to the development of CRC and assimilate the most up-to-date information that would facilitate future investigation on CRC-associated redox biology. Concomitantly, we argue that the exploitation of this distinct biochemical property of CRC cells might offer a fresh avenue to effectively eradicate these cells.
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Affiliation(s)
- Debasish Basak
- College of Pharmacy, Larkin University, Miami, FL 33169, USA;
| | | | - Jake Hancock
- College of Pharmacy, Larkin University, Miami, FL 33169, USA;
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24
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Liu C, Xie J, Sun S, Li H, Li T, Jiang C, Chen X, Wang J, Le A, Wang J, Li Z, Wang J, Wang W. Hemorrhagic Transformation After Tissue Plasminogen Activator Treatment in Acute Ischemic Stroke. Cell Mol Neurobiol 2020; 42:621-646. [PMID: 33125600 DOI: 10.1007/s10571-020-00985-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 10/22/2020] [Indexed: 12/17/2022]
Abstract
Hemorrhagic transformation (HT) is a common complication after thrombolysis with recombinant tissue-type plasminogen activator (rt-PA) in ischemic stroke. In this article, recent research progress of HT in vivo and in vitro studies was reviewed. We have discussed new potential mechanisms and possible experimental models of HT development, as well as possible biomarkers and treatment methods. Meanwhile, we compared and analyzed rodent models, large animal models and in vitro BBB models of HT, and the limitations of these models were discussed. The molecular mechanism of HT was investigated in terms of BBB disruption, rt-PA neurotoxicity and the effect of neuroinflammation, matrix metalloproteinases, reactive oxygen species. The clinical features to predict HT were represented including blood biomarkers and clinical factors. Recent progress in neuroprotective strategies to improve HT after stroke treated with rt-PA is outlined. Further efforts need to be made to reduce the risk of HT after rt-PA therapy and improve the clinical prognosis of patients with ischemic stroke.
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Affiliation(s)
- Chengli Liu
- Department of Traumatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Jie Xie
- Department of Traumatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Shanshan Sun
- Department of Ultrasound Imaging, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Hui Li
- Department of Traumatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Tianyu Li
- Department of Traumatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Chao Jiang
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, People's Republic of China
| | - Xuemei Chen
- Department of Anatomy, College of Basic Medical Sciences, Zhengzhou University, Henan, 450000, People's Republic of China
| | - Junmin Wang
- Department of Anatomy, College of Basic Medical Sciences, Zhengzhou University, Henan, 450000, People's Republic of China
| | - Anh Le
- Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Jiarui Wang
- The Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Zhanfei Li
- Department of Traumatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Jian Wang
- Department of Anatomy, College of Basic Medical Sciences, Zhengzhou University, Henan, 450000, People's Republic of China.
| | - Wei Wang
- Department of Traumatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
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Robinson AJ, Hopkins GL, Rastogi N, Hodges M, Doyle M, Davies S, Hole PS, Omidvar N, Darley RL, Tonks A. Reactive Oxygen Species Drive Proliferation in Acute Myeloid Leukemia via the Glycolytic Regulator PFKFB3. Cancer Res 2020; 80:937-949. [PMID: 31862780 PMCID: PMC7611211 DOI: 10.1158/0008-5472.can-19-1920] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 11/15/2019] [Accepted: 12/17/2019] [Indexed: 02/07/2023]
Abstract
Acute myeloid leukemia (AML) is a heterogeneous clonal disorder with a poor clinical outcome. Previously, we showed that overproduction of reactive oxygen species (ROS), arising from constitutive activation of NOX2 oxidase, occurs in >60% of patients with AML and that ROS production promotes proliferation of AML cells. We show here that the process most significantly affected by ROS overproduction is glycolysis. Whole metabolome analysis of 20 human primary AML showed that blasts generating high levels of ROS have increased glucose uptake and correspondingly increased glucose metabolism. In support of this, exogenous ROS increased glucose consumption while inhibition of NOX2 oxidase decreased glucose consumption. Mechanistically, ROS promoted uncoupling protein 2 (UCP2) protein expression and phosphorylation of AMPK, upregulating the expression of a key regulatory glycolytic enzyme, 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase (PFKFB3). Overexpression of PFKFB3 promoted glucose uptake and cell proliferation, whereas downregulation of PFKFB3 strongly suppressed leukemia growth both in vitro and in vivo in the NSG model. These experiments provide direct evidence that oxidase-derived ROS promotes the growth of leukemia cells via the glycolytic regulator PFKFB3. Targeting PFKFB3 may therefore present a new mode of therapy for this disease with a poor outcome. SIGNIFICANCE: These findings show that ROS generated by NOX2 in AML cells promotes glycolysis by activating PFKFB3 and suggest PFKFB3 as a novel therapeutic target in AML.
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Affiliation(s)
- Andrew J Robinson
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, United Kingdom
| | - Goitseone L Hopkins
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, United Kingdom
| | - Namrata Rastogi
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, United Kingdom
| | - Marie Hodges
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, United Kingdom
- Cardiff Experimental and Cancer Medicine Centre (ECMC), School of Medicine, Cardiff University, Wales, United Kingdom
| | - Michelle Doyle
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, United Kingdom
- Cardiff Experimental and Cancer Medicine Centre (ECMC), School of Medicine, Cardiff University, Wales, United Kingdom
| | - Sara Davies
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, United Kingdom
| | - Paul S Hole
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, United Kingdom
| | - Nader Omidvar
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, United Kingdom
| | - Richard L Darley
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, United Kingdom
| | - Alex Tonks
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Wales, United Kingdom.
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Rizzoto G, Kastelic JP. A new paradigm regarding testicular thermoregulation in ruminants? Theriogenology 2019; 147:166-175. [PMID: 31785861 DOI: 10.1016/j.theriogenology.2019.11.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 11/16/2019] [Accepted: 11/17/2019] [Indexed: 02/05/2023]
Abstract
Increased testicular temperature reduces percentages of morphologically normal and motile sperm and fertility. Specific sperm defects appear at consistent intervals after testicular hyperthermia, with degree and duration of changes related to intensity and duration of the thermal insult. Regarding pathogenesis of testicular hyperthermia on sperm quality and fertility, there is a long-standing paradigm that: 1) testes operate near hypoxia; 2) blood flow to the testes does not increase in response to increased testicular temperature; and 3) an ensuing hypoxia is the underlying cause of heat-induced changes in sperm morphology and function. There are very limited experimental data to support this paradigm, but we have data that refute it. In 2 × 3 factorial studies, mice and rams were exposed to two testicular temperatures (normal and increased) and three concentrations of O2 in inspired air (hyperoxia, normoxia and hypoxia). As expected, increased testicular temperature had deleterious effects on sperm motility and morphology; however, hyperoxia did not prevent these changes nor did hypoxia replicate them. In two follow-up experiments, anesthetized rams were sequentially exposed to: 1) three O2 concentrations (100, 21 and 13% O2); or 2) three testicular temperatures (33, 37 and 40 °C). As O2, decreased, testis maintained O2 delivery and uptake by increasing testicular blood flow and O2 extraction, with no indication of anaerobic metabolism. Furthermore, as testicular temperature increased, testicular metabolic rate nearly doubled, but increased blood flow and O2 extraction prevented testicular hypoxia and anaerobic metabolism. In conclusion, our data, in combination with other reports, challenged the paradigm that testicular hyperthermia fails to increase testicular blood flow and the ensuing hypoxia disrupts spermatogenesis.
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Affiliation(s)
- G Rizzoto
- Faculty of Veterinary Medicine, Department of Production Animal Health, University of Calgary, 3280 Hospital Drive, Calgary, AB, Canada, T2N 4Z6
| | - J P Kastelic
- Faculty of Veterinary Medicine, Department of Production Animal Health, University of Calgary, 3280 Hospital Drive, Calgary, AB, Canada, T2N 4Z6.
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27
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Li YW, Li XY, Li S, Zhao LM, Ma J, Piao HR, Jiang Z, Jin CH, Jin X. Synthesis and evaluation of the HIF-1α inhibitory activity of 3(5)-substituted-4-(quinolin-4-yl)- and 4-(2-phenylpyridin-4-yl)pyrazoles as inhibitors of ALK5. Bioorg Med Chem Lett 2019; 30:126822. [PMID: 31810777 DOI: 10.1016/j.bmcl.2019.126822] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/03/2019] [Accepted: 11/10/2019] [Indexed: 12/27/2022]
Abstract
The transcription factor hypoxia-inducible factor-1α (HIF-1α) plays an important role in apoptosis, metastasis, and proliferation and is recognized as an important potential therapeutic target for cancer. Six series of 3(5)-(6-methylpyridin-2-yl)-4-(quinolin-4-yl)pyrazoles (11a-d, 12a-d, and 18a-d) and 3(5)-(6-methylpyridin-2-yl)-4-(2-phenyl-pyridin-4-yl)pyrazoles (19a-d, 20a-d, and 21a-d) were synthesized and evaluated for activin receptor-like kinase 5 (ALK5) and HIF-1α inhibitory activity at the enzyme and cell levels. The effect of the lead compound 20d (J-1012) on HIF-1α activation in HCT116 cells was investigated. J-1012 markedly decreased the hypoxia-induced or TNF-induced accumulation of HIF-1α protein dose-dependently. Analysis revealed that J-1012 inhibited HIF-1α protein synthesis, without affecting the degradation of HIF-1α protein. Furthermore, by inhibiting the activation of HIF-1α, J-1012 suppressed the metastasis and proliferation and promoted apoptosis of HCT116 cells. These results suggest that J-1012 may be a potential therapeutic agent against human colon cancer.
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Affiliation(s)
- Yan-Wei Li
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, PR China; Pharmacy Intravenous Admixture Services, Yanbian University Hospital, Yanji 133000, PR China
| | - Xiang-Yu Li
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, PR China
| | - Shanji Li
- The School of Public Health, Jilin Medical University, Jilin 132013, PR China
| | - Li-Min Zhao
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, PR China
| | - Juan Ma
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, PR China
| | - Hu-Ri Piao
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, PR China
| | - Zhe Jiang
- Pharmacy Intravenous Admixture Services, Yanbian University Hospital, Yanji 133000, PR China.
| | - Cheng Hua Jin
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, PR China.
| | - Xuejun Jin
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji 133002, PR China.
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Wang T, Meng J, Wang C, Wen T, Jia M, Ge Y, Xie L, Hao S, Liu J, Xu H. Inhibition of Murine Breast Cancer Metastases by Hydrophilic As 4S 4 Nanoparticles Is Associated With Decreased ROS and HIF-1α Downregulation. Front Oncol 2019; 9:333. [PMID: 31106156 PMCID: PMC6498897 DOI: 10.3389/fonc.2019.00333] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/11/2019] [Indexed: 12/19/2022] Open
Abstract
Arsenic sulfide (As4S4) is a mineral drug that can be administrated orally and has been applied in the treatment of myeloid leukemia. The aim of this work is to investigate the therapeutic effect of As4S4 in highly metastatic triple-negative breast cancer (TNBC) animal model, as As4S4 has not been applied in the treatment of breast cancer yet. To overcome the poor solubility of original As4S4, a formulation of hydrophilic As4S4 nanoparticles (e-As4S4) developed previously was applied to mouse breast cancer cells as well as the tumor-bearing mice. It was shown that e-As4S4 was much more cytotoxic than r-As4S4, strongly inhibiting the proliferation of the cells and scavenging intracellular reactive oxygen species (ROS). The oral administration of e-As4S4 significantly increased the accumulation of arsenic in the tumor tissue and eliminated ROS in tumor tissues. Besides, e-As4S4 could also inhibit the activation of hypoxia-inducible factor-1α (HIF-1α) and NLRP3 inflammasomes. Consequently, the angiogenesis was reduced, the metastasis to lung and liver was inhibited and the survival of tumor-bearing mice was prolonged. In conclusion, e-As4S4 holds great potential for an alternative therapeutics in the treatment of breast cancer, due to its unique function of correcting the aggressive microenvironment.
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Affiliation(s)
| | - Jie Meng
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | | | | | | | | | | | | | | | - Haiyan Xu
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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29
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Jo YY, Kim DW, Choi JY, Kim SG. 4-Hexylresorcinol and silk sericin increase the expression of vascular endothelial growth factor via different pathways. Sci Rep 2019; 9:3448. [PMID: 30837602 PMCID: PMC6400942 DOI: 10.1038/s41598-019-40027-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 02/07/2019] [Indexed: 12/17/2022] Open
Abstract
Angiogenesis plays an important role in active inflammation and wound healing. Our results showed that silk sericin and 4-hexylresorcinol (4HR) increased vascular endothelial growth factor (VEGF) expression in a dose-dependent manner in RAW264.7 cells. Unlike 4HR, silk sericin increased the expression of hypoxia inducible factor-1α (HIF-1α) and HIF-2α. Pretreatment with an HIF inhibitor decreased the sericin-induced increase in VEGF expression. However, the HIF inhibitor did not affect the 4HR-induced increase in VEGF expression. An inhibitor of matrix metalloproteinase (MMP) declined the 4HR-induced increase in VEGF expression. Silk sericin increased production of reactive oxygen species (ROS), whereas 4HR decreased ROS. M1 markers were increased by silk sericin treatment, and M2 markers were increased by 4HR treatment. VEGF and angiogenin expression were higher in rats treated with a 4HR-incorporated silk mat than in rats treated with a silk mat alone. In conclusion, silk sericin and 4HR increased VEGF expression in RAW264.7 cells via HIF-mediated and MMP-mediated pathways, respectively. Silk sericin exerted like pro-oxidant effects and 4HR exerted anti-oxidant effects. Rats treated with a 4HR-incorporated silk mat showed higher levels of VEGF and angiogenin than those treated with a silk mat alone.
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Affiliation(s)
- You-Young Jo
- Sericultural and Apicultural Division, National Institute of Agricultural Science, RDA, Wanju, 55365, Republic of Korea
| | - Dae-Won Kim
- Department of Oral Biochemistry, College of Dentistry, Gangneung-Wonju National University, Gangneung, 28644, Republic of Korea
| | - Je-Yong Choi
- School of Biochemistry and Cell Biology, BK21 Plus KNU Biomedical Convergence Program, Skeletal Diseases Analysis Center, Korea Mouse Phenotyping Center (KMPC), Kyungpook National University, Daegu, 41944, Republic of Korea
| | - Seong-Gon Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 28644, Republic of Korea.
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Lamadema N, Burr S, Brewer AC. Dynamic regulation of epigenetic demethylation by oxygen availability and cellular redox. Free Radic Biol Med 2019; 131:282-298. [PMID: 30572012 DOI: 10.1016/j.freeradbiomed.2018.12.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/04/2018] [Accepted: 12/10/2018] [Indexed: 02/07/2023]
Abstract
The chromatin structure of the mammalian genome must facilitate both precisely-controlled DNA replication together with tightly-regulated gene transcription. This necessarily involves complex mechanisms and processes which remain poorly understood. It has long been recognised that the epigenetic landscape becomes established during embryonic development and acts to specify and determine cell fate. In addition, the chromatin structure is highly dynamic and allows for both cellular reprogramming and homeostatic modulation of cell function. In this respect, the functions of epigenetic "erasers", which act to remove covalently-linked epigenetic modifications from DNA and histones are critical. The enzymatic activities of the TET and JmjC protein families have been identified as demethylases which act to remove methyl groups from DNA and histones, respectively. Further, they are characterised as members of the Fe(II)- and 2-oxoglutarate-dependent dioxygenase superfamily. This provides the intriguing possibility that their enzymatic activities may be modulated by cellular metabolism, oxygen availability and redox-based mechanisms, all of which are likely to display dynamic cell- and tissue-specific patterns of flux. Here we discuss the current evidence for such [O2]- and redox-dependent regulation of the TET and Jmjc demethylases and the potential physiological and pathophysiological functional consequences of such regulation.
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Affiliation(s)
- Nermina Lamadema
- School of Cardiovascular Medicine & Sciences, King's College London BHF Centre of Research Excellence, United Kingdom
| | - Simon Burr
- School of Cardiovascular Medicine & Sciences, King's College London BHF Centre of Research Excellence, United Kingdom
| | - Alison C Brewer
- School of Cardiovascular Medicine & Sciences, King's College London BHF Centre of Research Excellence, United Kingdom.
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Wang X, Ribeiro M, Iracheta-Vellve A, Lowe P, Ambade A, Satishchandran A, Bukong T, Catalano D, Kodys K, Szabo G. Macrophage-Specific Hypoxia-Inducible Factor-1α Contributes to Impaired Autophagic Flux in Nonalcoholic Steatohepatitis. Hepatology 2019; 69:545-563. [PMID: 30102772 PMCID: PMC6351177 DOI: 10.1002/hep.30215] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 08/07/2018] [Indexed: 12/11/2022]
Abstract
Inflammatory cell activation drives diverse cellular programming during hepatic diseases. Hypoxia-inducible factors (HIFs) have recently been identified as important regulators of immunity and inflammation. In nonalcoholic steatohepatitis (NASH), HIF-1α is upregulated in hepatocytes, where it induces steatosis; however, the role of HIF-1α in macrophages under metabolic stress has not been explored. In this study, we found increased HIF-1α levels in hepatic macrophages in methionine-choline-deficient (MCD) diet-fed mice and in macrophages of patients with NASH compared with controls. The HIF-1α increase was concomitant with elevated levels of autophagy markers BNIP3, Beclin-1, LC3-II, and p62 in both mouse and human macrophages. LysMCre HIFdPA fl/fl mice, which have HIF-1α levels stabilized in macrophages, showed higher steatosis and liver inflammation compared with HIFdPA fl/fl mice on MCD diet. In vitro and ex vivo experiments reveal that saturated fatty acid, palmitic acid (PA), both induces HIF-1α and impairs autophagic flux in macrophages. Using small interfering RNA-mediated knock-down and overexpression of HIF-1α in macrophages, we demonstrated that PA impairs autophagy via HIF-1α. We found that HIF-1α mediates NF-κB activation and MCP-1 production and that HIF-1α-mediated impairment of macrophage autophagy increases IL-1β production, contributing to MCD diet-induced NASH. Conclusion: Palmitic acid impairs autophagy via HIF-1α activation in macrophages. HIF-1α and impaired autophagy are present in NASH in vivo in mouse macrophages and in human blood monocytes. We identified that HIF-1α activation and decreased autophagic flux stimulate inflammation in macrophages through upregulation of NF-κB activation. These results suggest that macrophage activation in NASH involves a complex interplay between HIF-1α and autophagy as these pathways promote proinflammatory overactivation in MCD diet-induced NASH.
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Affiliation(s)
- Xiaojing Wang
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA,Institute and Department of Infectious Disease, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Marcelle Ribeiro
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Arvin Iracheta-Vellve
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Patrick Lowe
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Aditya Ambade
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Abhishek Satishchandran
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Terence Bukong
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Donna Catalano
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Karen Kodys
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Gyongyi Szabo
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
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Maybin JA, Murray AA, Saunders PTK, Hirani N, Carmeliet P, Critchley HOD. Hypoxia and hypoxia inducible factor-1α are required for normal endometrial repair during menstruation. Nat Commun 2018; 9:295. [PMID: 29362355 PMCID: PMC5780386 DOI: 10.1038/s41467-017-02375-6] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 11/24/2017] [Indexed: 02/08/2023] Open
Abstract
Heavy menstrual bleeding (HMB) is common and debilitating, and often requires surgery due to hormonal side effects from medical therapies. Here we show that transient, physiological hypoxia occurs in the menstrual endometrium to stabilise hypoxia inducible factor 1 (HIF-1) and drive repair of the denuded surface. We report that women with HMB have decreased endometrial HIF-1α during menstruation and prolonged menstrual bleeding. In a mouse model of simulated menses, physiological endometrial hypoxia occurs during bleeding. Maintenance of mice under hyperoxia during menses decreases HIF-1α induction and delays endometrial repair. The same effects are observed upon genetic or pharmacological reduction of endometrial HIF-1α. Conversely, artificial induction of hypoxia by pharmacological stabilisation of HIF-1α rescues the delayed endometrial repair in hypoxia-deficient mice. These data reveal a role for HIF-1 in the endometrium and suggest its pharmacological stabilisation during menses offers an effective, non-hormonal treatment for women with HMB.
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Affiliation(s)
- Jacqueline A Maybin
- MRC Centre for Reproductive Health, The Queen's Medical Research Centre, The University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, Scotland
| | - Alison A Murray
- MRC Centre for Reproductive Health, The Queen's Medical Research Centre, The University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, Scotland
| | - Philippa T K Saunders
- MRC Centre for Inflammation Research, The Queen's Medical Research Centre, The University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, Scotland
| | - Nikhil Hirani
- MRC Centre for Inflammation Research, The Queen's Medical Research Centre, The University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, Scotland
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Vesalius Research Centre, Centre for Cancer Biology, KU Leuven, 3000, Leuven, Belgium
| | - Hilary O D Critchley
- MRC Centre for Reproductive Health, The Queen's Medical Research Centre, The University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, Scotland.
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Ho JC, Abdullah LN, Pang QY, Jha S, Chow EKH, Yang H, Kato H, Poellinger L, Ueda J, Lee KL. Inhibition of the H3K9 methyltransferase G9A attenuates oncogenicity and activates the hypoxia signaling pathway. PLoS One 2017; 12:e0188051. [PMID: 29145444 PMCID: PMC5690420 DOI: 10.1371/journal.pone.0188051] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 10/31/2017] [Indexed: 12/12/2022] Open
Abstract
Epigenetic mechanisms play important roles in the regulation of tumorigenesis, and hypoxia-induced epigenetic changes may be critical for the adaptation of cancer cells to the hypoxic microenvironment of solid tumors. Previously, we showed that loss-of-function of the hypoxia-regulated H3K9 methyltransferase G9A attenuates tumor growth. However, the mechanisms by which blockade of G9A leads to a tumor suppressive effect remain poorly understood. We show that G9A is highly expressed in breast cancer and is associated with poor patient prognosis, where it may function as a potent oncogenic driver. In agreement with this, G9A inhibition by the small molecule inhibitor, BIX-01294, leads to increased cell death and impaired cell migration, cell cycle and anchorage-independent growth. Interestingly, whole transcriptome analysis revealed that genes involved in diverse cancer cell functions become hypoxia-responsive upon G9A inhibition. This was accompanied by the upregulation of the hypoxia inducible factors HIF1α and HIF2α during BIX-01294 treatment even in normoxia that may facilitate the tumor suppressive effects of BIX-01294. HIF inhibition was able to reverse some of the transcriptional changes induced by BIX-01294 in hypoxia, indicating that the HIFs may be important drivers of these derepressed target genes. Therefore, we show that G9A is a key mediator of oncogenic processes in breast cancer cells and G9A inhibition by BIX-01294 can successfully attenuate oncogenicity even in hypoxia.
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Affiliation(s)
- Jolene Caifeng Ho
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- * E-mail: (JCH); (JU); (KLL)
| | - Lissa Nurrul Abdullah
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Qing You Pang
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Sudhakar Jha
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Edward Kai-Hua Chow
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Henry Yang
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Hiroyuki Kato
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Lorenz Poellinger
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Jun Ueda
- Center for Advanced Research and Education, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
- * E-mail: (JCH); (JU); (KLL)
| | - Kian Leong Lee
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- * E-mail: (JCH); (JU); (KLL)
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Lee J, Abdeen AA, Hedhli J, Wycislo KL, Dobrucka IT, Fan TM, Dobrucki LW, Kilian KA. Melanoma topology reveals a stem-like phenotype that promotes angiogenesis. SCIENCE ADVANCES 2017; 3:e1701350. [PMID: 29075670 PMCID: PMC5656422 DOI: 10.1126/sciadv.1701350] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 10/03/2017] [Indexed: 05/19/2023]
Abstract
Tumor angiogenesis provides critical nutrients for cancer progression and may also facilitate pathways for dissemination during the process of metastasis. It is well established that cells that metastasize display characteristics of stem cells; however, the prevailing paradigm points to these stem-like cells residing in the hypoxic niche within the tumor interior. Controlling the geometry at the interface of a population of melanoma cells reveals a role for perimeter topology in promoting a stem-like state with enhanced tumorigenicity. We show that this putative melanoma-initiating cell (MIC) demonstrates significant enhancement in the secretion of proangiogenic molecules. This finding suggests the possibility of an "invasive niche" at the perimeter of a growing tumor that promotes a MIC state with angiogenic activity. Using several in vitro and in vivo models of tumor angiogenesis, we see concurrent stem-like characteristics with initiation of neovascularization. In the absence of hypoxia, precise topological cues induce signaling through integrin α5β1 and downstream extracellular signal-regulated kinase (ERK) signaling to regulate the MIC secretome through the signal transducer and activator of transcription (STAT) and hypoxia-inducible factor 1α (HIF1α) pathways. Inhibiting integrin α5β1 and ERK signaling attenuates both the MIC phenotype and proangiogenic signaling. These results suggest that topological cues in the periphery of malignant melanoma promote the MIC state-using mechanotransduction in lieu of low oxygen-to facilitate the formation of new vasculature for progression and invasion.
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Affiliation(s)
- Junmin Lee
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Amr A. Abdeen
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Jamila Hedhli
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute for Advanced Science and Technology, Urbana, IL 61801, USA
| | - Kathryn L. Wycislo
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Iwona T. Dobrucka
- Beckman Institute for Advanced Science and Technology, Urbana, IL 61801, USA
| | - Timothy M. Fan
- Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Lawrence W. Dobrucki
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Beckman Institute for Advanced Science and Technology, Urbana, IL 61801, USA
| | - Kristopher A. Kilian
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Corresponding author.
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Sun HD, Liu YJ, Chen J, Chen MY, Ouyang B, Guan XD. The pivotal role of HIF-1α in lung inflammatory injury induced by septic mesenteric lymph. Biomed Pharmacother 2017; 91:476-484. [DOI: 10.1016/j.biopha.2017.04.103] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/13/2017] [Accepted: 04/23/2017] [Indexed: 11/16/2022] Open
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Sharma NM, Cunningham CJ, Zheng H, Liu X, Patel KP. Hypoxia-Inducible Factor-1α Mediates Increased Sympathoexcitation via Glutamatergic N-Methyl-d-Aspartate Receptors in the Paraventricular Nucleus of Rats With Chronic Heart Failure. Circ Heart Fail 2017; 9:CIRCHEARTFAILURE.116.003423. [PMID: 27810863 DOI: 10.1161/circheartfailure.116.003423] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 10/13/2016] [Indexed: 12/30/2022]
Abstract
BACKGROUND Increased sympathetic outflow is a major contributor to the progression of chronic heart failure (CHF). Potentiation of glutamatergic tone has been causally related to the sympathoexcitation in CHF. Specifically, an increase in the N-methyl-d-aspartate-type 1 receptor (NMDA-NR1) expression within the paraventricular nucleus (PVN) is critically linked to the increased sympathoexcitation during CHF. However, the molecular mechanism(s) for the upregulation of NMDA-NR1 remains unexplored. We hypothesized that hypoxia via hypoxia-inducible factor 1α (HIF-1α) might contribute to the augmentation of the NMDA-NR1-mediated sympathoexcitatory responses from the PVN in CHF. METHODS AND RESULTS Immunohistochemistry staining, mRNA, and protein for hypoxia-inducible factor 1α were upregulated within the PVN of left coronary artery-ligated CHF rats. In neuronal cell line (NG108-15) in vitro, hypoxia caused a significant increase in mRNA and protein for HIF-1α (2-fold) with the concomitant increase in NMDA-NR1 mRNA, protein levels, and glutamate-induced Ca+ influx. Chromatin immunoprecipitation assay identified HIF-1α binding to NMDA-NR1 promoter during hypoxia. Silencing of HIF-1α in NG108 cells leads to a significant decrease in expression of NMDA-NR1, suggesting that expression of HIF-1α is necessary for the upregulation of NMDA-NR1. Consistent with these observations, HIF-1α silencing within the PVN abrogated the increased basal sympathetic tone and sympathoexcitatory responses to microinjection of NMDA in the PVN of rats with CHF. CONCLUSIONS These results uncover a critical role for HIF-1 in the upregulation of NMDA-NR1 to mediate sympathoexcitation in CHF. We conclude that subtle hypoxia within the PVN may act as a metabolic cue to modulate sympathoexcitation during CHF.
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Affiliation(s)
- Neeru M Sharma
- From the Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha
| | - Craig J Cunningham
- From the Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha
| | - Hong Zheng
- From the Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha
| | - Xuefei Liu
- From the Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha
| | - Kaushik P Patel
- From the Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha.
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Liu H, Liu X, Zhang C, Zhu H, Xu Q, Bu Y, Lei Y. Redox Imbalance in the Development of Colorectal Cancer. J Cancer 2017; 8:1586-1597. [PMID: 28775778 PMCID: PMC5535714 DOI: 10.7150/jca.18735] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 02/27/2017] [Indexed: 01/10/2023] Open
Abstract
Redox imbalance is resulted from the destruction of balance between oxidants and antioxidants. The dominant oxidants are reactive oxygen species (ROS), which are involved in multiple cellular processes by physiologically transporting signal as a second messenger or pathologically oxidizing DNA, lipids, and proteins. Generally speaking, low concentration of ROS is indispensable for cell survival and proliferation. However, high concentration of ROS is cytotoxic. Additionally, ROS are now known to induce the oxidative modification of macromolecules especially proteins. The redox modification of proteins is involved in numerous biological processes related to diseases including CRC. Herein, we attempt to afford an overview that highlights the crosstalk between redox imbalance and CRC.
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Affiliation(s)
- Hao Liu
- Department of Biochemistry and Molecular Biology, and Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P. R. China
| | - Xin Liu
- Department of Biochemistry and Molecular Biology, and Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P. R. China
| | - Chundong Zhang
- Department of Biochemistry and Molecular Biology, and Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P. R. China
| | - Huifang Zhu
- Department of Biochemistry and Molecular Biology, and Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P. R. China
| | - Qian Xu
- Department of Anesthesiology, North Sichuan Medical College, Nanchong, Sichuan 637000, China
| | - Youquan Bu
- Department of Biochemistry and Molecular Biology, and Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P. R. China
| | - Yunlong Lei
- Department of Biochemistry and Molecular Biology, and Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P. R. China
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Zwicker P, Schultze N, Niehs S, Albrecht D, Methling K, Wurster M, Wachlin G, Lalk M, Lindequist U, Haertel B. Differential effects of Helenalin, an anti-inflammatory sesquiterpene lactone, on the proteome, metabolome and the oxidative stress response in several immune cell types. Toxicol In Vitro 2017; 40:45-54. [DOI: 10.1016/j.tiv.2016.12.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 12/14/2016] [Accepted: 12/15/2016] [Indexed: 12/21/2022]
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Ibbotson K, Yell J, Ronaldson PT. Nrf2 signaling increases expression of ATP-binding cassette subfamily C mRNA transcripts at the blood-brain barrier following hypoxia-reoxygenation stress. Fluids Barriers CNS 2017; 14:6. [PMID: 28298215 PMCID: PMC5353788 DOI: 10.1186/s12987-017-0055-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 02/16/2017] [Indexed: 12/11/2022] Open
Abstract
Background Strategies to maintain BBB integrity in diseases with a hypoxia/reoxygenation (H/R) component involve preventing glutathione (GSH) loss from endothelial cells. GSH efflux transporters include multidrug resistance proteins (Mrps). Therefore, characterization of Mrp regulation at the BBB during H/R is required to advance these transporters as therapeutic targets. Our goal was to investigate, in vivo, regulation of Abcc1, Abcc2, and Abcc4 mRNA expression (i.e., genes encoding Mrp isoforms that transport GSH) by nuclear factor E2-related factor (Nrf2) using a well-established H/R model. Methods Female Sprague–Dawley rats (200–250 g) were subjected to normoxia (Nx, 21% O2, 60 min), hypoxia (Hx, 6% O2, 60 min) or H/R (6% O2, 60 min followed by 21% O2, 10 min, 30 min, or 1 h) or were treated with the Nrf2 activator sulforaphane (25 mg/kg, i.p.) for 3 h. Abcc mRNA expression in brain microvessels was determined using quantitative real-time PCR. Nrf2 signaling activation was examined using an electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP) respectively. Data were expressed as mean ± SD and analyzed via ANOVA followed by the post hoc Bonferroni t test. Results We observed increased microvascular expression of Abcc1, Abcc2, and Abcc4 mRNA following H/R treatment with reoxygenation times of 10 min, 30 min, and 1 h and in animals treated with sulforaphane. Using a biotinylated Nrf2 probe, we observed an upward band shift in brain microvessels isolated from H/R animals or animals administered sulforaphane. ChIP studies showed increased Nrf2 binding to antioxidant response elements on Abcc1, Abcc2, and Abcc4 promoters following H/R or sulforaphane treatment, suggesting a role for Nrf2 signaling in Abcc gene regulation. Conclusions Our data show increased Abcc1, Abcc2, and Abcc4 mRNA expression at the BBB in response to H/R stress and that Abcc gene expression is regulated by Nrf2 signaling. Since these Mrp isoforms transport GSH, these results may point to endogenous transporters that can be targeted for BBB protection during H/R stress. Experiments are ongoing to examine functional implications of Nrf2-mediated increases in Abcc transcript expression. Such studies will determine utility of targeting Mrp isoforms for BBB protection in diseases with an H/R component.
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Affiliation(s)
- Kathryn Ibbotson
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1295 N. Martin Avenue, P.O. Box 210202, Tucson, 85721, AZ, USA
| | - Joshua Yell
- Department of Pharmacology, College of Medicine, University of Arizona, 1501 N. Campbell Avenue, P.O. Box 245050, Tucson, AZ, 85724-5050, USA
| | - Patrick T Ronaldson
- Department of Pharmacology, College of Medicine, University of Arizona, 1501 N. Campbell Avenue, P.O. Box 245050, Tucson, AZ, 85724-5050, USA.
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Wible RS, Sutter TR. Soft Cysteine Signaling Network: The Functional Significance of Cysteine in Protein Function and the Soft Acids/Bases Thiol Chemistry That Facilitates Cysteine Modification. Chem Res Toxicol 2017; 30:729-762. [DOI: 10.1021/acs.chemrestox.6b00428] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ryan S. Wible
- Department
of Chemistry, ‡Department of Biological Sciences, and §W. Harry Feinstone Center for Genomic
Research, University of Memphis, 3700 Walker Avenue, Memphis, Tennessee 38152-3370, United States
| | - Thomas R. Sutter
- Department
of Chemistry, ‡Department of Biological Sciences, and §W. Harry Feinstone Center for Genomic
Research, University of Memphis, 3700 Walker Avenue, Memphis, Tennessee 38152-3370, United States
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Iyalomhe O, Swierczek S, Enwerem N, Chen Y, Adedeji MO, Allard J, Ntekim O, Johnson S, Hughes K, Kurian P, Obisesan TO. The Role of Hypoxia-Inducible Factor 1 in Mild Cognitive Impairment. Cell Mol Neurobiol 2016; 37:969-977. [PMID: 27858285 DOI: 10.1007/s10571-016-0440-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 10/26/2016] [Indexed: 01/16/2023]
Abstract
Neuroinflammation and reactive oxygen species are thought to mediate the pathogenesis of Alzheimer's disease (AD), suggesting that mild cognitive impairment (MCI), a prodromal stage of AD, may be driven by similar insults. Several studies document that hypoxia-inducible factor 1 (HIF-1) is neuroprotective in the setting of neuronal insults, since this transcription factor drives the expression of critical genes that diminish neuronal cell death. HIF-1 facilitates glycolysis and glucose metabolism, thus helping to generate reductive equivalents of NADH/NADPH that counter oxidative stress. HIF-1 also improves cerebral blood flow which opposes the toxicity of hypoxia. Increased HIF-1 activity and/or expression of HIF-1 target genes, such as those involved in glycolysis or vascular flow, may be an early adaptation to the oxidative stressors that characterize MCI pathology. The molecular events that constitute this early adaptation are likely neuroprotective, and might mitigate cognitive decline or the onset of full-blown AD. On the other hand, prolonged or overwhelming stressors can convert HIF-1 into an activator of cell death through agents such as Bnip3, an event that is more likely to occur in late MCI or advanced Alzheimer's dementia.
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Affiliation(s)
- Osigbemhe Iyalomhe
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Sabina Swierczek
- Department of Hematology/BMT, University of Utah School of Medicine, 30 N Medical Dr, Salt Lake City, UT, 84132, USA
| | - Ngozi Enwerem
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Yuanxiu Chen
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Monica O Adedeji
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Joanne Allard
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Oyonumo Ntekim
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Sheree Johnson
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Kakra Hughes
- Division of Endovascular Surgery, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Philip Kurian
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA.,Human Genome Center, Howard University, 2041 Georgia Ave NW, Washington, DC, 20060, USA
| | - Thomas O Obisesan
- Geriatrics Division, Department of Medicine, Howard University Hospital, 2041 Georgia Ave NW, Washington, DC, 20060, USA. .,Howard University Clinical Research Unit (GHUCCTS CTSA), 2041 Georgia Ave, NW, Washington, DC, 20060, USA.
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Zwicker P, Schultze N, Niehs S, Methling K, Wurster M, Albrecht D, Bernhardt J, Wachlin G, Lalk M, Lindequist U, Haertel B. A proteomic approach for the identification of immunotoxic properties of Tulipalin A. Proteomics 2016; 16:2997-3008. [DOI: 10.1002/pmic.201600130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 09/23/2016] [Accepted: 09/28/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Paula Zwicker
- Institute of Pharmacy, Pharmaceutical Biology; Ernst-Moritz-Arndt-University; Greifswald Germany
| | - Nadin Schultze
- Institute of Pharmacy, Pharmaceutical Biology; Ernst-Moritz-Arndt-University; Greifswald Germany
| | - Sarah Niehs
- Institute of Biochemistry, Biochemistry of Metabolism/Metabolomics; Ernst-Moritz-Arndt-University; Greifswald Germany
| | - Karen Methling
- Institute of Biochemistry, Biochemistry of Metabolism/Metabolomics; Ernst-Moritz-Arndt-University; Greifswald Germany
| | - Martina Wurster
- Institute of Biochemistry, Biochemistry of Metabolism/Metabolomics; Ernst-Moritz-Arndt-University; Greifswald Germany
| | - Dirk Albrecht
- Institute of Microbiology, Microbial Physiology and Molecular Biology; Ernst-Moritz-Arndt-University; Greifswald Germany
| | - Jörg Bernhardt
- Institute of Microbiology, Microbial Physiology and Molecular Biology; Ernst-Moritz-Arndt-University; Greifswald Germany
| | - Gerhild Wachlin
- Institute of Microbiology, Microbial Physiology and Molecular Biology; Ernst-Moritz-Arndt-University; Greifswald Germany
| | - Michael Lalk
- Institute of Biochemistry, Biochemistry of Metabolism/Metabolomics; Ernst-Moritz-Arndt-University; Greifswald Germany
| | - Ulrike Lindequist
- Institute of Pharmacy, Pharmaceutical Biology; Ernst-Moritz-Arndt-University; Greifswald Germany
| | - Beate Haertel
- Institute of Pharmacy, Pharmaceutical Biology; Ernst-Moritz-Arndt-University; Greifswald Germany
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Triner D, Shah YM. Hypoxia-inducible factors: a central link between inflammation and cancer. J Clin Invest 2016; 126:3689-3698. [PMID: 27525434 DOI: 10.1172/jci84430] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The tumor immune response is in a dynamic balance between antitumor mechanisms, which serve to decrease cancer growth, and the protumor inflammatory response, which increases immune tolerance, cell survival, and proliferation. Hypoxia and expression of HIF-1α and HIF-2α are characteristic features of all solid tumors. HIF signaling serves as a major adaptive mechanism in tumor growth in a hypoxic microenvironment. HIFs represent a critical signaling node in the switch to protumorigenic inflammatory responses through recruitment of protumor immune cells and altered immune cell effector functions to suppress antitumor immune responses and promote tumor growth through direct growth-promoting cytokine production, angiogenesis, and ROS production. Modulating HIF function will be an important mechanism to dampen the tumor-promoting inflammatory response and inhibit cancer growth.
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Baskaran R, Poornima P, Huang CY, Padma VV. Neferine prevents NF-κB translocation and protects muscle cells from oxidative stress and apoptosis induced by hypoxia. Biofactors 2016; 42:407-17. [PMID: 27041079 DOI: 10.1002/biof.1286] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 02/25/2016] [Accepted: 03/10/2016] [Indexed: 01/15/2023]
Abstract
Neferine (Nef), a bisbenzylisoquinoline alkaloid from lotus seed embryo has a wide range of pharmacological activities. Possible molecular mechanism for the cytoprotective action of Nef during hypoxic stress has not been explored till now. Hence, this is an attempt to elucidate the molecular mechanism involved in the Nef mediated cytoprotection on hypoxia-induced cell injury. Cytoprotective dose of Nef in muscle cells (Human rhabdomyosarcoma cells) exposed to hypoxia was determined by MTT assay. Nef at 500 nM offered better cytoprotection and was used for all the experiments. ROS, intracellular calcium accumulation and mitochondrial membrane (ΔψM) potential were measured using fluorescent probes. Further, we evaluated the effect Nef on hypoxia induced inflammatory and apoptotic responses by FACS and analyzing the expression patterns of NF-κB, COX-2, HIF-1α, caspase-3, caspase-9, Bcl2, and Bax. The results of this study revealed that pretreatment of the cells with Nef significantly decreased the ΔψM and ROS in the cells subjected to hypoxia. Further, Nef inhibited NF-κB there by inhibiting the expression of its downstream regulator COX-2, while it induced the functional HIF-1α expression. The results also indicate that Nef significantly inhibited the ROS dependent mitochondrial mediated apoptosis induced during hypoxia. The cytoprotection elicited by Nef in a model of hypoxia induced cell death involves both anti-inflammatory and anti-apoptotic response. These results suggest that Nef may be used as prophylactic agent against the hypoxic challenge. © 2016 BioFactors, 42(4):407-417, 2016.
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Affiliation(s)
- Rathinasamy Baskaran
- DRDO BU Center for Life Sciences, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Paramasivan Poornima
- Department of Biotechnology, Translational Research Laboratory, School of Biotechnology and Genetic Engineering, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Chih Yang Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
- Graduate Institute of Chinese Medical Science, China Medical University, Taichung, Taiwan
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - Viswanadha Vijaya Padma
- DRDO BU Center for Life Sciences, Bharathiar University, Coimbatore, Tamil Nadu, India
- Department of Biotechnology, Translational Research Laboratory, School of Biotechnology and Genetic Engineering, Bharathiar University, Coimbatore, Tamil Nadu, India
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
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Chen Y, Zhang Y, Ji H, Ji Y, Yang J, Huang J, Sun D. Involvement of hypoxia-inducible factor-1α in the oxidative stress induced by advanced glycation end products in murine Leydig cells. Toxicol In Vitro 2016; 32:146-53. [DOI: 10.1016/j.tiv.2015.12.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 11/19/2015] [Accepted: 12/18/2015] [Indexed: 10/28/2022]
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Chang CZ, Wu SC. 4'-O-β-D-Glucosyl-5-O-Methylvisamminol, A Natural Histone H3 Phosphorylation Epigenetic Suppressor, Exerts a Neuroprotective Effect Through PI3K/Akt Signaling Pathway on Focal Cerebral Ischemia in Rats. World Neurosurg 2016; 89:474-88. [PMID: 26868427 DOI: 10.1016/j.wneu.2016.01.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 01/15/2016] [Accepted: 01/19/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND A bursting inflammation has been observed that compromises neurologic function in patients who experience stroke. We sought to examine the neuroprotective efficacy of 4'-O-β-D-glucosyl-5-O-methylvisamminol (OGOMV), a novel histone H3 phosphorylation epigenetic suppressor) in a transient middle cerebral artery occlusion (tMCAO). METHODS A rodent tMCAO model was used. Administration with 400 μg/kg/day OGOMV was initiated 12 hours before (prevention) and 1 hour after animals were subjected to tMCAO (reversal). The cerebral cortex was harvested to examine protein kinase B (PI3D/Akt), 5-bromo-2'-deoxyuridine (Western blot), and caspases (reverse-transcription polymerase chain reaction). In addition, cerebrospinal fluid samples were collected to examine interleukin 1-β, interleukin-6, monocyte chemoattractant protein-1, and tumor necrosis factor-α (reverse-transcription polymerase chain reaction). RESULTS Cortical 5-bromo-2'-deoxyuridine and phospho-PI3D/Akt were reduced in tMCAO animals, compared with the healthy controls but increased in the OGOMV treatment and prevention groups. Activated cortical caspase-3,-6, and -9a as well as increased IL-1β and TNF-α levels were observed in the tMCAO animals (P < 0.05). Both prevention and treatment with OGOMV significantly reduced cleaved caspase-3 and -9a groups, but no significant change in caspase-6 was noted. Perifosine, an Akt inhibitor, was added to reduce the bioexpression of phospho-P13D/Akt, and Bcl-2 level and increased cleaved caspase-9a level in both OGOMV prevention and treatment tMCAO groups (P > 0.05). CONCLUSION Our study suggests that OGOMV could exert a neuroprotective effect by inhibiting the P13D/Akt protein, attenuating inflammation, and cleaved caspase-3- and -9a-related apoptosis. This study also lends credence to support the notion that the prevention of OGOMV could attenuate proinflammatory cytokine mRNA and late-onset caspases in tMCAO and merits further study.
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Affiliation(s)
- Chih-Zen Chang
- Department of Surgery, Faculty of Medicine, School of Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Division of Neurosurgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Surgery, Kaohsiung Municipal Ta Tung Hospital, Kaohsiung, Taiwan.
| | - Shu-Chuan Wu
- Division of Neurosurgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
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Touchi R, Ueda K, Kurokawa N, Tsuji M. Central regions of keloids are severely ischaemic. J Plast Reconstr Aesthet Surg 2015; 69:e35-41. [PMID: 26794626 DOI: 10.1016/j.bjps.2015.11.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 07/31/2015] [Accepted: 11/15/2015] [Indexed: 11/26/2022]
Abstract
We classified scars as keloids, hypertrophic scars and mature scars, and then examined the scars for differences in central and marginal vascularization. We found significant differences in localized hypoxia-induced factor-1α (HIF-1α) expression and vascular density in keloids, but no localized differences in hypertrophic or mature scars. The central areas of keloids exhibited higher HIF-1α expression and lower vascular density than marginal areas, suggesting that the former are severely ischaemic.
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Affiliation(s)
- Ryoma Touchi
- Department of Plastic and Reconstructive Surgery, Osaka Medical College, Takatsuki, Osaka, Japan.
| | - Koichi Ueda
- Department of Plastic and Reconstructive Surgery, Osaka Medical College, Takatsuki, Osaka, Japan
| | - Norifumi Kurokawa
- Department of Plastic Surgery, Takatsuki General Hospital, Takatsuki, Osaka, Japan
| | - Motomu Tsuji
- Department of Pathology, Osaka Medical College, Takatsuki, Osaka, Japan
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Kim BH, Lee J, Choi JS, Park DY, Song HY, Park TK, Cho CH, Ye SK, Joo CK, Koh GY, Kim TY. Imidazole-based alkaloid derivative LCB54-0009 suppresses ocular angiogenesis and lymphangiogenesis in models of experimental retinopathy and corneal neovascularization. Br J Pharmacol 2015; 172:3875-89. [PMID: 25917462 DOI: 10.1111/bph.13177] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 04/08/2015] [Accepted: 04/18/2015] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND AND PURPOSE Abnormally induced angiogenesis and lymphangiogenesis are associated with human diseases, including neovascular eye disease. Substances that inhibit these processes may have potential as an attractive therapeutic strategy for these diseases. EXPERIMENTAL APPROACH In vitro and in vivo angiogenesis and/or lymphangiogenesis were assessed in VEGF- or hypoxia-stimulated endothelial and retinal cells and in animal models of oxygen-induced retinopathy (OIR), streptozotocin-induced diabetic retinopathy (SIDR), suture-induced inflammatory corneal neovascularization (SICNV) and silver nitrate-induced corneal neovascularization. HUVECs and retinal cells were cultured under hypoxic conditions or incubated with VEGF to identify the molecular mechanisms involved. KEY RESULTS The imidazole-based alkaloid derivative LCB54-0009 inhibited capillary-like tube formation in VEGF-induced HUVECs without inducing cytotoxic effects. Intravitreal injection of LCB54-0009 into retinas suppressed the formation of the pathological neovascular tufts and increased vascular permeability in both OIR of mice and SIDR of rats. Furthermore, subconjunctival injection of LCB54-0009 into the cornea suppressed corneal inflammation and inflammation-associated angiogenesis and lymphangiogenesis in SICNV of mice and silver nitrate cauterization of rats. These pharmacological activities were associated with effects on HIF-1α protein stability and HIF-1α/NF-κB redox sensitivity through its antioxidant activities. LCB54-0009 also inhibited the hypoxia-induced expression of angiopoietin-2, and VEGF-induced VEGFR-2 activation and downstream signalling, resulting in the down-regulation of the expression of pro-angiogenic factors and pro-inflammatory mediators and an up-regulation of the expression of anti-angiogenic factors. CONCLUSIONS AND IMPLICATIONS LCB54-0009 is a potential candidate molecule for blocking pathological angiogenesis and lymphangiogenesis mediated by HIF-1α- angiopoietin-2 expression and VEGFR-2 activation.
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Affiliation(s)
- Byung-Hak Kim
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Junyeop Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Jun-Sub Choi
- Catholic Institute for Visual Science, Department of Ophthalmology and Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Dae Young Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | | | | | - Chung-Hyun Cho
- Department of Pharmacology and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Sang-Kyu Ye
- Department of Pharmacology and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Choun-Ki Joo
- Catholic Institute for Visual Science, Department of Ophthalmology and Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Gou Young Koh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Tae-Yoon Kim
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Szade A, Grochot-Przeczek A, Florczyk U, Jozkowicz A, Dulak J. Cellular and molecular mechanisms of inflammation-induced angiogenesis. IUBMB Life 2015; 67:145-59. [PMID: 25899846 DOI: 10.1002/iub.1358] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 01/20/2015] [Indexed: 02/06/2023]
Abstract
Blood vessel formation is a fundamental process for the development of organism and tissue regeneration. Of importance, angiogenesis occurring during postnatal development is usually connected with inflammation. Here, we review how molecular and cellular mechanisms underlying inflammatory reactions regulate angiogenesis. Inflamed tissues are characterized by hypoxic conditions and immune cell infiltration. In this review, we describe an interplay of hypoxia-inducible factors (HIFs), HIF1 and HIF2, as well as NF-κB and nitric oxide in the regulation of angiogenesis. The mobilization of macrophages and the differential role of M1 and M2 macrophage subsets in angiogenesis are also discussed. Next, we present the current knowledge about microRNA regulation of inflammation in the context of new blood vessel formation. Finally, we describe how the mechanisms involved in inflammation influence tumor angiogenesis. We underlay and discuss the role of NF-E2-related factor 2/heme oxygenase-1 pathway as crucial in the regulation of inflammation-induced angiogenesis.
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Affiliation(s)
- Agata Szade
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
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GYEONG-JIN YU, IL-WHAN CHOI, GI-YOUNG KIM, BYUNG-WOO KIM, CHEOL PARK, SU-HYUN HONG, SUNG-KWON MOON, HEE-JAE CHA, YOUNG-CHAE CHANG, KEE YOEUP PAEK, WUN-JAE KIM, YUNG HYUN CHOI. Anti-inflammatory potential of saponins derived from cultured wild ginseng roots in lipopolysaccharide-stimulated RAW 264.7 macrophages. Int J Mol Med 2015; 35:1690-8. [DOI: 10.3892/ijmm.2015.2165] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 03/16/2015] [Indexed: 11/05/2022] Open
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