1
|
Slawski J, Jaśkiewicz M, Barton A, Kozioł S, Collawn JF, Bartoszewski R. Regulation of the HIF switch in human endothelial and cancer cells. Eur J Cell Biol 2024; 103:151386. [PMID: 38262137 DOI: 10.1016/j.ejcb.2024.151386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 01/17/2024] [Accepted: 01/17/2024] [Indexed: 01/25/2024] Open
Abstract
Hypoxia-inducible factors (HIFs) are transcription factors that reprogram the transcriptome for cells to survive hypoxic insults and oxidative stress. They are important during embryonic development and reprogram the cells to utilize glycolysis when the oxygen levels are extremely low. This metabolic change facilitates normal cell survival as well as cancer cell survival. The key feature in survival is the transition between acute hypoxia and chronic hypoxia, and this is regulated by the transition between HIF-1 expression and HIF-2/HIF-3 expression. This transition is observed in many human cancers and endothelial cells and referred to as the HIF Switch. Here we discuss the mechanisms involved in the HIF Switch in human endothelial and cancer cells which include mRNA and protein levels of the alpha chains of the HIFs. A major continuing effort in this field is directed towards determining the differences between normal and tumor cell utilization of this important pathway, and how this could lead to potential therapeutic approaches.
Collapse
Affiliation(s)
- Jakub Slawski
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Maciej Jaśkiewicz
- International Research Agenda 3P, Medicine Laboratory, Medical University of Gdansk, Gdansk, Poland
| | - Anna Barton
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Sylwia Kozioł
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - James F Collawn
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, USA
| | - Rafał Bartoszewski
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland.
| |
Collapse
|
2
|
Ladd AD, Duarte S, Sahin I, Zarrinpar A. Mechanisms of drug resistance in HCC. Hepatology 2024; 79:926-940. [PMID: 36680397 DOI: 10.1097/hep.0000000000000237] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 11/21/2022] [Indexed: 01/22/2023]
Abstract
HCC comprises ∼80% of primary liver cancer. HCC is the only major cancer for which death rates have not improved over the last 10 years. Most patients are diagnosed with advanced disease when surgical and locoregional treatments are not feasible or effective. Sorafenib, a multikinase inhibitor targeting cell growth and angiogenesis, was approved for advanced unresectable HCC in 2007. Since then, other multikinase inhibitors have been approved. Lenvatinib was found to be noninferior to sorafenib as a first-line agent. Regorafenib, cabozantinib, and ramucirumab were shown to prolong survival as second-line agents. Advances in immunotherapy for HCC have also added hope for patients, but their efficacy remains limited. A large proportion of patients with advanced HCC gain no long-term benefit from systemic therapy due to primary and acquired drug resistance, which, combined with its rising incidence, keeps HCC a highly fatal disease. This review summarizes mechanisms of primary and acquired resistance to therapy and includes methods for bypassing resistance. It addresses recent advancements in immunotherapy, provides new perspectives on the linkage between drug resistance and molecular etiology of HCC, and evaluates the role of the microbiome in drug resistance. It also discusses alterations in signaling pathways, dysregulation of apoptosis, modulations in the tumor microenvironment, involvement of cancer stem cells, changes in drug metabolism/transport, tumor hypoxia, DNA repair, and the role of microRNAs in drug resistance. Understanding the interplay among these factors will provide guidance on the development of new therapeutic strategies capable of improving patient outcomes.
Collapse
Affiliation(s)
- Alexandra D Ladd
- Department of Surgery, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Sergio Duarte
- Department of Surgery, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Ilyas Sahin
- Division of Hematology/Oncology, Department of Medicine, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Ali Zarrinpar
- Department of Surgery, College of Medicine, University of Florida, Gainesville, Florida, USA
| |
Collapse
|
3
|
Luo L, Zhang W, You S, Cui X, Tu H, Yi Q, Wu J, Liu O. The role of epithelial cells in fibrosis: Mechanisms and treatment. Pharmacol Res 2024; 202:107144. [PMID: 38484858 DOI: 10.1016/j.phrs.2024.107144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/19/2024] [Accepted: 03/12/2024] [Indexed: 03/19/2024]
Abstract
Fibrosis is a pathological process that affects multiple organs and is considered one of the major causes of morbidity and mortality in multiple diseases, resulting in an enormous disease burden. Current studies have focused on fibroblasts and myofibroblasts, which directly lead to imbalance in generation and degradation of extracellular matrix (ECM). In recent years, an increasing number of studies have focused on the role of epithelial cells in fibrosis. In some cases, epithelial cells are first exposed to external physicochemical stimuli that may directly drive collagen accumulation in the mesenchyme. In other cases, the source of stimulation is mainly immune cells and some cytokines, and epithelial cells are similarly altered in the process. In this review, we will focus on the multiple dynamic alterations involved in epithelial cells after injury and during fibrogenesis, discuss the association among them, and summarize some therapies targeting changed epithelial cells. Especially, epithelial mesenchymal transition (EMT) is the key central step, which is closely linked to other biological behaviors. Meanwhile, we think studies on disruption of epithelial barrier, epithelial cell death and altered basal stem cell populations and stemness in fibrosis are not appreciated. We believe that therapies targeted epithelial cells can prevent the progress of fibrosis, but not reverse it. The epithelial cell targeting therapies will provide a wonderful preventive and delaying action.
Collapse
Affiliation(s)
- Liuyi Luo
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China
| | - Wei Zhang
- Department of Oral Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Siyao You
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China
| | - Xinyan Cui
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China
| | - Hua Tu
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China
| | - Qiao Yi
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China
| | - Jianjun Wu
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China.
| | - Ousheng Liu
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China.
| |
Collapse
|
4
|
Bramatti I, Aschner M, Branco V, Carvalho C. Exposure of human glioblastoma cells to thimerosal inhibits the thioredoxin system and decreases tumor growth-related factors. Toxicol Appl Pharmacol 2024; 484:116844. [PMID: 38325586 DOI: 10.1016/j.taap.2024.116844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/25/2024] [Accepted: 02/04/2024] [Indexed: 02/09/2024]
Abstract
Glioblastoma multiforme (GBM) is the most common, aggressive, and fatal primary malignant brain tumor in adults. The therapeutic efficacy of temozolomide (TMZ) is limited owing to frequent treatment resistance. The latter is in part related to the overexpression of redox systems such as the thioredoxin system. This system is fundamental for cell survival and proliferation, regulating hypoxia inducible factor-1alpha (HIF-1α) activity, in turn controlling vascular endothelial growth factor (VEGF), which is indispensable for tumor invasiveness, angiogenesis and microenvironment maintenance. HIF-1α can also be regulated by the signal transducer and activator of transcription 3 (STAT3), an oncogene stimulated by pro-inflammatory cytokines and growth factors. The thioredoxin system has several known inhibitors including mercury compounds such as Thimerosal (TmHg) which readily crosses the blood-brain barrier (BBB) and accumulates in the brain. Though previously used in various applications epidemiological evidence on TmHg's neurotoxicity is lacking. The objective of this study was to verify whether thimerosal is a suitable candidate for hard repurposing to control glioblastoma; therefore, the effects of this molecule were evaluated in human GBM (U87) cells. Our novel results show that TmHg decreased cellular viability (>50%) and migration (up to 90% decrease in wound closure), reduced thioredoxin reductase (TrxR/TXNRD1) and thioredoxin (Trx) activity, and increased reactive oxygen species (ROS) generation. Moreover, TmHg reduced HIF-1α expression (35%) as observed by immunofluorescence. Co-exposure of U87 cells to TmHg and TMZ reduced HIF-1α, VEGF, and phosphorylated STAT3. Consequently, TmHg alone or combined with chemotherapeutic drugs can reduce neoangiogenesis and ameliorate glioblastoma progression and treatment.
Collapse
Affiliation(s)
- Isabella Bramatti
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, Lisboa 1649-003, Portugal
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Vasco Branco
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, Lisboa 1649-003, Portugal; Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Cristina Carvalho
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, Lisboa 1649-003, Portugal; Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal.
| |
Collapse
|
5
|
Fan S, Gao H, Zhang Y, Nie L, Bártolo R, Bron R, Santos HA, Schirhagl R. Quantum Sensing of Free Radical Generation in Mitochondria of Single Heart Muscle Cells during Hypoxia and Reoxygenation. ACS NANO 2024; 18:2982-2991. [PMID: 38235677 PMCID: PMC10832053 DOI: 10.1021/acsnano.3c07959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/31/2023] [Accepted: 01/05/2024] [Indexed: 01/19/2024]
Abstract
Cells are damaged during hypoxia (blood supply deprivation) and reoxygenation (oxygen return). This damage occurs in conditions such as cardiovascular diseases, cancer, and organ transplantation, potentially harming the tissue and organs. The role of free radicals in cellular metabolic reprogramming under hypoxia is under debate, but their measurement is challenging due to their short lifespan and limited diffusion range. In this study, we employed a quantum sensing technique to measure the real-time production of free radicals at the subcellular level. We utilize fluorescent nanodiamonds (FNDs) that exhibit changes in their optical properties based on the surrounding magnetic noise. This way, we were able to detect the presence of free radicals. To specifically monitor radical generation near mitochondria, we coated the FNDs with an antibody targeting voltage-dependent anion channel 2 (anti-VDAC2), which is located in the outer membrane of mitochondria. We observed a significant increase in the radical load on the mitochondrial membrane when cells were exposed to hypoxia. Subsequently, during reoxygenation, the levels of radicals gradually decreased back to the normoxia state. Overall, by applying a quantum sensing technique, the connections among hypoxia, free radicals, and the cellular redox status has been revealed.
Collapse
Affiliation(s)
- Siyu Fan
- Department
of Biomaterials and Biomedical Technology, University Medical Center
Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
| | - Han Gao
- Department
of Biomaterials and Biomedical Technology, University Medical Center
Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
- Drug
Research Program, Division of Pharmaceutical Chemistry and Technology,
Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Yue Zhang
- Department
of Biomaterials and Biomedical Technology, University Medical Center
Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
| | - Linyan Nie
- Department
of Biomaterials and Biomedical Technology, University Medical Center
Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
| | - Raquel Bártolo
- Department
of Biomaterials and Biomedical Technology, University Medical Center
Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
| | - Reinier Bron
- Department
of Biomaterials and Biomedical Technology, University Medical Center
Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
| | - Hélder A. Santos
- Department
of Biomaterials and Biomedical Technology, University Medical Center
Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
- Drug
Research Program, Division of Pharmaceutical Chemistry and Technology,
Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Romana Schirhagl
- Department
of Biomaterials and Biomedical Technology, University Medical Center
Groningen, University of Groningen, 9713 AV Groningen, The Netherlands
| |
Collapse
|
6
|
Liang L, Yang Y, Yang L, Zhang X, Xu S, Liu Y, Wu X, Chao L. HIF-1α is positively associated with endometrial receptivity by regulating PKM2. J Obstet Gynaecol Res 2023; 49:2734-2745. [PMID: 37533344 DOI: 10.1111/jog.15752] [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: 03/09/2023] [Accepted: 07/14/2023] [Indexed: 08/04/2023]
Abstract
PURPOSE Numerous advancements have been introduced into the field of assisted reproductive technology (ART) in the past four decades. Nonetheless, implantation failure is still a key limiting step for a successful pregnancy. Building of endometrial receptivity (ER) is essential for successful implantation. However, the fundamental biological processes and mechanisms of ER remain elusive. Our study investigates the function of hypoxia inducible factor-1α (HIF-1α) during ER establishment and shed lights on the novel molecular mechanism by which HIF-1α regulates ER-related gene expression network. METHODS Levels of HIF-1α, homeobox A10 (HOXA10), insulin-like growth factor-binding protein 1 (IGFBP1), pyruvate kinase M2 (PKM2), and lactate dehydrogenase A (LDHA) in endometrial tissues were measured via real-time PCR, immunoblotting and immunohistochemistry. The correlation between HIF-1α and HOXA10, IGFBP1, PKM2, LDHA were analyzed separately. Ishikawa cells were treated with vector HIF-1α, HIF-1α-siRNA, and PKM2-siRNA. After transfection, the levels of HOXA10, IGFBP1, LDHA, and PKM2 were measured via real-time PCR and immunoblotting, and the lactate concentrations and cell migration of Ishikawa cells were measured. RESULTS Levels of HIF-1α, IGFBP1, HOXA10, LDHA, and PKM2 were significantly decreased in recurrent implantation failure (RIF) patients and levels of HOXA10, IGFBP1, PKM2, and LDHA were correlated with HIF-1α in endometrium. Then in a cellular model established by HIF-1α vector and HIF-1α-siRNA, the expression of HOXA10, IGFBP1, LDHA, PKM2, and lactate concentrations were dramatically upregulated and downregulated. And the expression of HOXA10, and IGFBP1 were dramatically decreased by PKM2-siRNA. CONCLUSIONS HIF-1α plays a crucial role in the building of ER through regulating glycolysis.
Collapse
Affiliation(s)
- Lixia Liang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
- Center for Reproductive Medicine, Children's Hospital of Shanxi and Women Health Center of Shanxi, Taiyuan, Shanxi, People's Republic of China
| | - Yang Yang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Lin Yang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Xiuping Zhang
- Center for Reproductive Medicine, Children's Hospital of Shanxi and Women Health Center of Shanxi, Taiyuan, Shanxi, People's Republic of China
| | - Suming Xu
- Center for Reproductive Medicine, Children's Hospital of Shanxi and Women Health Center of Shanxi, Taiyuan, Shanxi, People's Republic of China
| | - Yanling Liu
- Center for Reproductive Medicine, Children's Hospital of Shanxi and Women Health Center of Shanxi, Taiyuan, Shanxi, People's Republic of China
| | - Xueqing Wu
- Center for Reproductive Medicine, Children's Hospital of Shanxi and Women Health Center of Shanxi, Taiyuan, Shanxi, People's Republic of China
| | - Lan Chao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| |
Collapse
|
7
|
Popazova O, Belenichev I, Yadlovskyi O, Oksenych V, Kamyshnyi A. Altered Blood Molecular Markers of Cardiovascular Function in Rats after Intrauterine Hypoxia and Drug Therapy. Curr Issues Mol Biol 2023; 45:8704-8715. [PMID: 37998724 PMCID: PMC10670299 DOI: 10.3390/cimb45110547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/25/2023] [Accepted: 10/28/2023] [Indexed: 11/25/2023] Open
Abstract
Many children and adults who have suffered prenatal hypoxia at an early age develop many serious diseases. This disease is an actual problem of pediatric cardiology and little studied. The aim was to analyze the cardioprotective effect of L-arginine, Thiotriazoline, Angioline, and Mildronate on the cardiovascular system of rats after prenatal hypoxia. Methods: The experiments were carried out on 50 female white rats; intraperitoneal sodium nitrite solution was administered daily to pregnant female rats after 16 days at a dose of 50 mg/kg. Control pregnant rats received saline. The offspring were divided into groups: 1-intact; 2-the control group of rat pups after PH, treated daily with physiological saline; 3-six groups of rat pups after PH, treated daily from the 1st to the 30th day after birth. Heat shock protein HSP70 was determined by enzyme immunoassay, ST2 Nitrotyrosine, and eNOS was observed by ELISA. Results: Angiolin showed a high cardioprotective effect even a month after discontinuation of the drug, and after introduction, the highest decrease in ST2 nitrotyrosine was revealed. Thiotriazoline and L-arginine have an antioxidant effect and a positive effect on eNOS expression, increasing the concentration of HSP70. Mildronate increased the expression of eNOS and the concentration of HSP70 in the blood of experimental rats after a course of administration, but did not show an antioxidant effect and did not reduce the concentration of nitrotyrosine. The results obtained indicate the cardioprotective effect of modulators of the NO system with different mechanisms of action of drugs after prenatal hypoxia.
Collapse
Affiliation(s)
- Olena Popazova
- Department of Histology, Cytology and Embryology, Zaporizhzhia State Medical and Pharmaceutical University, 69000 Zaporizhzhia, Ukraine
| | - Igor Belenichev
- Department of Pharmacology and Medical Formulation with Course of Normal Physiology, Zaporizhzhia State Medical and Pharmaceutical University, 69000 Zaporizhzhia, Ukraine
| | - Oleh Yadlovskyi
- Institute of Pharmacology and Toxicology, National Medical Academy of Ukraine, 03057 Kyiv, Ukraine
| | - Valentyn Oksenych
- Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway
| | - Aleksandr Kamyshnyi
- Department of Microbiology, Virology and Immunology, I. Horbachevsky Ternopil State Medical University, 46001 Ternopil, Ukraine
| |
Collapse
|
8
|
Habas E, Al Adab A, Arryes M, Alfitori G, Farfar K, Habas AM, Akbar RA, Rayani A, Habas E, Elzouki A. Anemia and Hypoxia Impact on Chronic Kidney Disease Onset and Progression: Review and Updates. Cureus 2023; 15:e46737. [PMID: 38022248 PMCID: PMC10631488 DOI: 10.7759/cureus.46737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2023] [Indexed: 12/01/2023] Open
Abstract
Chronic kidney disease (CKD) is caused by hypoxia in the renal tissue, leading to inflammation and increased migration of pathogenic cells. Studies showed that leukocytes directly sense hypoxia and respond by initiating gene transcription, encoding the 2-integrin adhesion molecules. Moreover, other mechanisms participate in hypoxia, including anemia. CKD-associated anemia is common, which induces and worsens hypoxia, contributing to CKD progression. Anemia correction can slow CKD progression, but it should be cautiously approached. In this comprehensive review, the underlying pathophysiology mechanisms and the impact of renal tissue hypoxia and anemia in CKD onset and progression will be reviewed and discussed in detail. Searching for the latest updates in PubMed Central, Medline, PubMed database, Google Scholar, and Google search engines were conducted for original studies, including cross-sectional studies, cohort studies, clinical trials, and review articles using different keywords, phrases, and texts such as "CKD progression, anemia in CKD, CKD, anemia effect on CKD progression, anemia effect on CKD progression, and hypoxia and CKD progression". Kidney tissue hypoxia and anemia have an impact on CKD onset and progression. Hypoxia causes nephron cell death, enhancing fibrosis by increasing interstitium protein deposition, inflammatory cell activation, and apoptosis. Severe anemia correction improves life quality and may delay CKD progression. Detection and avoidance of the risk factors of hypoxia prevent recurrent acute kidney injury (AKI) and reduce the CKD rate. A better understanding of kidney hypoxia would prevent AKI and CKD and lead to new therapeutic strategies.
Collapse
Affiliation(s)
| | - Aisha Al Adab
- Internal Medicine, Hamad General Hospital, Doha, QAT
| | - Mehdi Arryes
- Internal Medicine, Hamad General Hospital, Doha, QAT
| | | | | | - Ala M Habas
- Internal Medicine, Tripoli University, Tripoli, LBY
| | - Raza A Akbar
- Internal Medicine, Hamad General Hospital, Doha, QAT
| | - Amnna Rayani
- Hemat-oncology Department, Pediatric Tripoli Hospital, Tripoli University, Tripoli, LBY
| | - Eshrak Habas
- Internal Medicine, Tripoli University, Tripoli, LBY
| | | |
Collapse
|
9
|
Joo HY, Jung JK, Kim MY, Woo SR, Jeong JM, Park ER, Kim YM, Park JJ, Kim J, Yun M, Shin HJ, Lee KH. NADH elevation during chronic hypoxia leads to VHL-mediated HIF-1α degradation via SIRT1 inhibition. Cell Biosci 2023; 13:182. [PMID: 37777750 PMCID: PMC10543270 DOI: 10.1186/s13578-023-01130-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 09/08/2023] [Indexed: 10/02/2023] Open
Abstract
BACKGROUND Under conditions of hypoxia, cancer cells with hypoxia inducible factor-1α (HIF-1α) from heterogeneous tumor cells show greater aggression and progression in an effort to compensate for harsh environmental conditions. Extensive study on the stability of HIF-1α under conditions of acute hypoxia in cancer progression has been conducted, however, understanding of its involvement during the chronic phase is limited. METHODS In this study, we investigated the effect of SIRT1 on HIF1 stability in a typical chronic hypoxic conditon that maintains cells for 24 h under hypoxia using Western blotting, co-IP, measurement of intracellular NAD + and NADH levels, semi-quantitative RT-PCR analysis, invasion assay, gene knockdown. RESULTS Here we demonstrated that the high concentration of pyruvate in the medium, which can be easily overlooked, has an effect on the stability of HIF-1α. We also demonstrated that NADH functions as a signal for conveyance of HIF-1α degradation via the SIRT1 and VHL signaling pathway under conditions of chronic hypoxia, which in turn leads to attenuation of hypoxically strengthened invasion and angiogenic activities. A steep increase in the level of NADH occurs during chronic hypoxia, leading to upregulation of acetylation and degradation of HIF-1α via inactivation of SIRT1. Of particular interest, p300-mediated acetylation at lysine 709 of HIF-1α is recogonized by VHL, which leads to degradation of HIF-1α via ubiquitin/proteasome machinary under conditions of chronic hypoxia. In addition, we demonstrated that NADH-elevation-induced acetylation and subsequent degradation of HIF-1α was independent of proline hydroxylation. CONCLUSIONS Our findings suggest a critical role of SIRT1 as a metabolic sensor in coordination of hypoxic status via regulation of HIF-1α stability. These results also demonstrate the involvement of VHL in degradation of HIF-1α through recognition of PHD-mediated hydroxylation in normoxia and p300-mediated HIF-1α acetylation in hypoxia.
Collapse
Affiliation(s)
- Hyun-Yoo Joo
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
- Lab. of Biochemistry, School of Life Sciences & Biotechnology, Korea University, Seoul, Korea
| | - Jin Kyu Jung
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul, Korea
- Neuro-Oncology Branch, The Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Mi-Yeon Kim
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Seon Rang Woo
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
- Department of Otolaryngology-Head and Neck Surgery, Kyung Hee University School of Medicine, Hyung Hee University Medical Center, Seoul, Republic of Korea
| | - Jae Min Jeong
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Eun-Ran Park
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Yong-Min Kim
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Joong-Jean Park
- Department of Physiology, College of Medicine, Korea University, Seoul, Korea
| | - Joon Kim
- Lab. of Biochemistry, School of Life Sciences & Biotechnology, Korea University, Seoul, Korea
| | - Miyong Yun
- Department of Bioindustry and Bioresource Engineering, College of Life Sciences, Sejong University, Seoul, Korea.
| | - Hyun-Jin Shin
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Sciences, Seoul, Korea.
| | - Kee-Ho Lee
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Sciences, Seoul, Korea.
| |
Collapse
|
10
|
Song J, Sundar KM, Horvathova M, Gangaraju R, Indrak K, Christensen RD, Genzor S, Lundby C, Divoky V, Ganz T, Prchal JT. Increased blood reactive oxygen species and hepcidin in obstructive sleep apnea precludes expected erythrocytosis. Am J Hematol 2023; 98:1265-1276. [PMID: 37350302 DOI: 10.1002/ajh.26992] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 06/24/2023]
Abstract
Obstructive sleep apnea (OSA) causes intermittent hypoxia during sleep. Hypoxia predictably initiates an increase in the blood hemoglobin concentration (Hb); yet in our analysis of 527 patients with OSA, >98% did not have an elevated Hb. To understand why patients with OSA do not develop secondary erythrocytosis due to intermittent hypoxia, we first hypothesized that erythrocytosis occurs in these patients, but is masked by a concomitant increase in plasma volume. However, we excluded that explanation by finding that the red cell mass was normal (measured by radionuclide labeling of erythrocytes and carbon monoxide inhalation). We next studied 45 patients with OSA before and after applying continuous positive airway pressure (CPAP). We found accelerated erythropoiesis in these patients (increased erythropoietin and reticulocytosis), but it was offset by neocytolysis (lysis of erythrocytes newly generated in hypoxia upon return to normoxia). Parameters of neocytolysis included increased reactive oxygen species from expanded reticulocytes' mitochondria. The antioxidant catalase was also downregulated in these cells from hypoxia-stimulated microRNA-21. In addition, inflammation-induced hepcidin limited iron availability for erythropoiesis. After CPAP, some of these intermediaries diminished but Hb did not change. We conclude that in OSA, the absence of significant increase in red cell mass is integral to the pathogenesis, and results from hemolysis via neocytolysis combined with inflammation-mediated suppression of erythropoiesis.
Collapse
Affiliation(s)
- Jihyun Song
- Division of Hematology, University of Utah, Salt Lake City, Utah, USA
| | - Krishna M Sundar
- Division of Pulmonary and Critical Care Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Monika Horvathova
- Department of Biology, Palacky University Olomouc, Olomouc, Czech Republic
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
| | - Radhika Gangaraju
- Division of Hematology, University of Utah, Salt Lake City, Utah, USA
- Institute for Cancer Outcomes and Survivorship, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Karel Indrak
- Department of Hemato-Oncology, Palacky University and University Hospital Olomouc (PUUHO), Olomouc, Czech Republic
| | | | - Samuel Genzor
- Department of Pulmonary Diseases and Tuberculosis, Faculty of Medicine and Dentistry, PUUHO, Olomouc, Czech Republic
| | - Carsten Lundby
- Centre for Physical Activity Research, Copenhagen, Denmark
| | - Vladimir Divoky
- Department of Biology, Palacky University Olomouc, Olomouc, Czech Republic
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
| | - Tomas Ganz
- Pathology and Laboratory Medicine, UCLA, Los Angeles, California, USA
| | - Josef T Prchal
- Division of Hematology, University of Utah, Salt Lake City, Utah, USA
| |
Collapse
|
11
|
Ramachandramoorthy H, Dang T, Srinivasa A, Nguyen KT, Nguyen P. Development of a Smart Portable Hypoxic Chamber with Accurate Sensing, Control and Visualization of In Vitro Cell Culture for Replication of Cancer Microenvironment. Cancers (Basel) 2023; 15:3645. [PMID: 37509306 PMCID: PMC10378062 DOI: 10.3390/cancers15143645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 07/09/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
Clinical resistance towards treatment is a major concern in cancer therapy. This is due to in vitro studies lacking essential microenvironmental aspects. Tumor-hypoxia is an important pathophysiological phenomenon in numerous malignant tumors. Various studies have shown the importance of a hypoxic microenvironment (HME) in cancer drug resistance and its effects on cellular signaling and metabolism pathways. Most drugs fail in transition from a laboratory to clinical trials because of the variability in the testing microenvironment conditions. It is, thus, very crucial that research work needs to replicate these conditions in vitro to test the drugs and/or drug carriers for cancer therapy. Previous works have used a portable hypoxia chamber to reduce the cell microenvironment to hypoxic conditions. These techniques lack reliability and consistency due to a lack of control and visualization. In this research, we developed a smart portable hypoxia chamber that could accurately control the oxygen inside the portable chamber and have a global visualization. The proposed hypoxia chamber provided ease of use with the ranges of 1% to 20% oxygen with increments of 0.5%, as well as reproducibility and accuracy. The chamber displayed great precision on reaching the set oxygen limit and a high stability in maintaining that set level of oxygen compared to the uncontrolled setup for extended durations (24 h). For instance, at a 2% oxygen level, our automated system maintained this level over 1400 min, whereas the oxygen level fluctuated up to 4.5% in the conventional hypoxic chamber. We have also demonstrated the pitfalls of uncontrolled and non-visualized hypoxia chamber setup and the dire need for our system. The hypoxia-induced factor (HIF-1α) expression in cancer cell lines was tested and compared between the conventional hypoxia setup and our automated hypoxia chamber. We observed that there was a twofold increase in HIF-1α expression in the automated controlled chamber compared to the conventional device. The device also provided real-time sensing, visualization and control of the chamber conditions, which could aid in complex in vitro studies.
Collapse
Affiliation(s)
- Harish Ramachandramoorthy
- Department of Bioengineering, University of Texas, Arlington, TX 76019, USA
- Joint Bioengineering Program, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Tuan Dang
- Department of Computer Science, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Ankitha Srinivasa
- Department of Bioengineering, University of Texas, Arlington, TX 76019, USA
| | - Kytai Truong Nguyen
- Department of Bioengineering, University of Texas, Arlington, TX 76019, USA
- Joint Bioengineering Program, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Phuc Nguyen
- Department of Computer Science, University of Texas at Arlington, Arlington, TX 76019, USA
| |
Collapse
|
12
|
Ullah K, Ai L, Humayun Z, Wu R. Targeting Endothelial HIF2α/ARNT Expression for Ischemic Heart Disease Therapy. BIOLOGY 2023; 12:995. [PMID: 37508425 PMCID: PMC10376750 DOI: 10.3390/biology12070995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 07/07/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023]
Abstract
Ischemic heart disease (IHD) is a major cause of mortality and morbidity worldwide, with novel therapeutic strategies urgently needed. Endothelial dysfunction is a hallmark of IHD, contributing to its development and progression. Hypoxia-inducible factors (HIFs) are transcription factors activated in response to low oxygen levels, playing crucial roles in various pathophysiological processes related to cardiovascular diseases. Among the HIF isoforms, HIF2α is predominantly expressed in cardiac vascular endothelial cells and has a key role in cardiovascular diseases. HIFβ, also known as ARNT, is the obligate binding partner of HIFα subunits and is necessary for HIFα's transcriptional activity. ARNT itself plays an essential role in the development of the cardiovascular system, regulating angiogenesis, limiting inflammatory cytokine production, and protecting against cardiomyopathy. This review provides an overview of the current understanding of HIF2α and ARNT signaling in endothelial cell function and dysfunction and their involvement in IHD pathogenesis. We highlight their roles in inflammation and maintaining the integrity of the endothelial barrier, as well as their potential as therapeutic targets for IHD.
Collapse
Affiliation(s)
- Karim Ullah
- Section of Cardiology, Department of Medicine, Biological Sciences Division, University of Chicago, Chicago, IL 60637, USA
| | - Lizhuo Ai
- Section of Cardiology, Department of Medicine, Biological Sciences Division, University of Chicago, Chicago, IL 60637, USA
- The Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Zainab Humayun
- Section of Cardiology, Department of Medicine, Biological Sciences Division, University of Chicago, Chicago, IL 60637, USA
| | - Rongxue Wu
- Section of Cardiology, Department of Medicine, Biological Sciences Division, University of Chicago, Chicago, IL 60637, USA
| |
Collapse
|
13
|
Chen X, Feng W, Yan F, Li W, Xu P, Tang Y. Alteration of antioxidant status, glucose metabolism, and hypoxia signal pathway in Eirocheir sinensis after acute hypoxic stress and reoxygenation. Comp Biochem Physiol C Toxicol Pharmacol 2023; 268:109604. [PMID: 36906248 DOI: 10.1016/j.cbpc.2023.109604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 02/20/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
Dissolved oxygen (DO) is crucial for the survival of Chinese mitten crab (Eirocheir sinensis); low DO levels adversely affect the health of these crabs. In this study, we evaluated the underlying response mechanism of E. sinensis to acute hypoxic stress by analyzing antioxidant parameters, glycolytic indicators, and hypoxia signaling factors. The crabs were exposed to hypoxia for 0, 3, 6, 12, and 24 h and reoxygenated for 1, 3, 6, 12, and 24 h. The hepatopancreas, muscle, gill, and hemolymph were sampled at different exposure times to detect the biochemical parameters and gene expression. The results showed that the activity of catalase, antioxidants, and malondialdehyde in tissues significantly increased under acute hypoxia and gradually decreased during the reoxygenation phase. Under acute hypoxic stress, glycolysis indices, including hexokinase (HK), phosphofructokinase, pyruvate kinase (PK), pyruvic acid (PA), lactate dehydrogenase (LDH), lactic acid (LA), succinate dehydrogenase (SDH), glucose, and glycogen in the hepatopancreas, hemolymph, and gills increased to varying degrees but recovered to the control levels after reoxygenation. Gene expression data showed that hypoxia signaling pathway-related genes, including hypoxia-inducible factor-1α/β (HIF1α/β), prolyl hydroxylase (PHD), factor inhibiting hypoxia-inducible factor (FIH), and glycolysis-related factors (HK and PK) were upregulated, showing that the HIF signaling pathway was activated under hypoxic conditions. In conclusion, acute hypoxic exposure activated the antioxidant defense system, glycolysis, and HIF pathway to respond to adverse conditions. These data contribute to elucidating the defense and adaptive mechanisms of crustaceans to acute hypoxic stress and reoxygenation.
Collapse
Affiliation(s)
- Xue Chen
- College of Fisheries and Life, Shanghai Ocean University, Shanghai 201306, China
| | - Wenrong Feng
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
| | - Fengyuan Yan
- College of Fisheries and Life, Shanghai Ocean University, Shanghai 201306, China
| | - Wenjing Li
- Jiangsu Haorun Biological Industry Group Co., Ltd, Taizhou 225300, China; Jiangsu Haorun National Crab Seed Technology Co., Ltd, Taizhou 225300, China
| | - Pao Xu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Yongkai Tang
- College of Fisheries and Life, Shanghai Ocean University, Shanghai 201306, China; Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
| |
Collapse
|
14
|
Arriaza K, Brito J, Siques P, Flores K, Ordenes S, Aguayo D, López MDR, Arribas SM. Effects of Zinc on the Right Cardiovascular Circuit in Long-Term Hypobaric Hypoxia in Wistar Rats. Int J Mol Sci 2023; 24:ijms24119567. [PMID: 37298516 DOI: 10.3390/ijms24119567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/19/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Hypobaric hypoxia under chromic conditions triggers hypoxic pulmonary vasoconstriction (HPV) and right ventricular hypertrophy (RVH). The role of zinc (Zn) under hypoxia is controversial and remains unclear. We evaluated the effect of Zn supplementation in prolonged hypobaric hypoxia on HIF2α/MTF-1/MT/ZIP12/PKCε pathway in the lung and RVH. Wistar rats were exposed to hypobaric hypoxia for 30 days and randomly allocated into three groups: chronic hypoxia (CH); intermittent hypoxia (2 days hypoxia/2 days normoxia; CIH); and normoxia (sea level control; NX). Each group was subdivided (n = 8) to receive either 1% Zn sulfate solution (z) or saline (s) intraperitoneally. Body weight, hemoglobin, and RVH were measured. Zn levels were evaluated in plasma and lung tissue. Additionally, the lipid peroxidation levels, HIF2α/MTF-1/MT/ZIP12/PKCε protein expression and pulmonary artery remodeling were measured in the lung. The CIH and CH groups showed decreased plasma Zn and body weight and increased hemoglobin, RVH, and vascular remodeling; the CH group also showed increased lipid peroxidation. Zn administration under hypobaric hypoxia upregulated the HIF2α/MTF-1/MT/ZIP12/PKCε pathway and increased RVH in the intermittent zinc group. Under intermittent hypobaric hypoxia, Zn dysregulation could participate in RVH development through alterations in the pulmonary HIF2α/MTF1/MT/ZIP12/PKCε pathway.
Collapse
Affiliation(s)
- Karem Arriaza
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, Hamburg (Germany) and Iquique (Chile), Avenida Arturo Prat 2120, Iquique 1110939, Chile
| | - Julio Brito
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, Hamburg (Germany) and Iquique (Chile), Avenida Arturo Prat 2120, Iquique 1110939, Chile
| | - Patricia Siques
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, Hamburg (Germany) and Iquique (Chile), Avenida Arturo Prat 2120, Iquique 1110939, Chile
| | - Karen Flores
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, Hamburg (Germany) and Iquique (Chile), Avenida Arturo Prat 2120, Iquique 1110939, Chile
| | - Stefany Ordenes
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, Hamburg (Germany) and Iquique (Chile), Avenida Arturo Prat 2120, Iquique 1110939, Chile
| | - Daniel Aguayo
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, Hamburg (Germany) and Iquique (Chile), Avenida Arturo Prat 2120, Iquique 1110939, Chile
| | - María Del Rosario López
- Department of Physiology, Faculty of Medicine, University Autónoma of Madrid, 28029 Madrid, Spain
| | - Silvia M Arribas
- Department of Physiology, Faculty of Medicine, University Autónoma of Madrid, 28029 Madrid, Spain
| |
Collapse
|
15
|
Romerio F. Origin and functional role of antisense transcription in endogenous and exogenous retroviruses. Retrovirology 2023; 20:6. [PMID: 37194028 DOI: 10.1186/s12977-023-00622-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 04/30/2023] [Indexed: 05/18/2023] Open
Abstract
Most proteins expressed by endogenous and exogenous retroviruses are encoded in the sense (positive) strand of the genome and are under the control of regulatory elements within the 5' long terminal repeat (LTR). A number of retroviral genomes also encode genes in the antisense (negative) strand and their expression is under the control of negative sense promoters within the 3' LTR. In the case of the Human T-cell Lymphotropic Virus 1 (HTLV-1), the antisense protein HBZ has been shown to play a critical role in the virus lifecycle and in the pathogenic process, while the function of the Human Immunodeficiency Virus 1 (HIV-1) antisense protein ASP remains unknown. However, the expression of 3' LTR-driven antisense transcripts is not always demonstrably associated with the presence of an antisense open reading frame encoding a viral protein. Moreover, even in the case of retroviruses that do express an antisense protein, such as HTLV-1 and the pandemic strains of HIV-1, the 3' LTR-driven antisense transcript shows both protein-coding and noncoding activities. Indeed, the ability to express antisense transcripts appears to be phylogenetically more widespread among endogenous and exogenous retroviruses than the presence of a functional antisense open reading frame within these transcripts. This suggests that retroviral antisense transcripts may have originated as noncoding molecules with regulatory activity that in some cases later acquired protein-coding function. Here, we will review examples of endogenous and exogenous retroviral antisense transcripts, and the ways through which they benefit viral persistence in the host.
Collapse
Affiliation(s)
- Fabio Romerio
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| |
Collapse
|
16
|
Heck-Swain KL, Koeppen M. The Intriguing Role of Hypoxia-Inducible Factor in Myocardial Ischemia and Reperfusion: A Comprehensive Review. J Cardiovasc Dev Dis 2023; 10:jcdd10050215. [PMID: 37233182 DOI: 10.3390/jcdd10050215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/27/2023] Open
Abstract
Hypoxia-inducible factors (HIFs) play a crucial role in cellular responses to low oxygen levels during myocardial ischemia and reperfusion injury. HIF stabilizers, originally developed for treating renal anemia, may offer cardiac protection in this context. This narrative review examines the molecular mechanisms governing HIF activation and function, as well as the pathways involved in cell protection. Furthermore, we analyze the distinct cellular roles of HIFs in myocardial ischemia and reperfusion. We also explore potential therapies targeting HIFs, emphasizing their possible benefits and limitations. Finally, we discuss the challenges and opportunities in this research area, underscoring the need for continued investigation to fully realize the therapeutic potential of HIF modulation in managing this complex condition.
Collapse
Affiliation(s)
- Ka-Lin Heck-Swain
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Tuebingen, 72076 Tübingen, Germany
| | - Michael Koeppen
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Tuebingen, 72076 Tübingen, Germany
| |
Collapse
|
17
|
Saranya GR, Viswanathan P. Gut microbiota dysbiosis in AKI to CKD transition. Biomed Pharmacother 2023; 161:114447. [PMID: 37002571 DOI: 10.1016/j.biopha.2023.114447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 03/05/2023] Open
Abstract
BACKGROUND AND AIM The symptoms of acute kidney injury (AKI) include a sudden drop-in glomerular filtration rate (GFR), a rise in serum creatinine (sCr), blood urea nitrogen (BUN), and electrolytes, which leads to a rapid loss of kidney function. Chronic kidney disease progresses when AKI symptoms persist for over three months or 90 days. Numerous prevalent secondary risk factors, including diabetes, hypertension, obesity, and heart illness, are directly or indirectly linked to the development of AKI and the switch from AKI to CKD. Recently, the change of intestinal bacteria known as "gut dysbiosis" has been linked to distant organ dysfunction, including the heart, lungs, kidneys, and brain. Indirectly or directly, gut dysbiosis contributes to the progression of CKD and AKI. However, the effects of gut dysbiosis and the mechanism of action in the progression from AKI to CKD are unknown or need further investigation. The mechanism by which gut dysbiosis initiates AKI's progression to CKD should be explicitly concerned. The review primarily focuses on the action of gut dysbiosis in kidney disease, the effects of dysbiosis, the characterisation of dysbiosis and its pathogenic products, the various pathogenic routes and mechanism involved in expediting the transition from AKI to CKD. CONCLUSION We identified and briefly reviewed the impacts of dysbiosis in various situations such as hypoxia, mitochondrial induced reactive oxygen species (mtROS), aryl hydrocarbon receptor (AhR) activation and microbiota derived uremic toxemic substances profoundly to push AKI to CKD conditions.
Collapse
Affiliation(s)
- G R Saranya
- Renal Research Lab, School of Bio Sciences and Technology, Pearl Research Park, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Pragasam Viswanathan
- Renal Research Lab, School of Bio Sciences and Technology, Pearl Research Park, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India.
| |
Collapse
|
18
|
Berggren-Nylund R, Ryde M, Löfdahl A, Ibáñez-Fonseca A, Kåredal M, Westergren-Thorsson G, Tufvesson E, Larsson-Callerfelt AK. Effects of hypoxia on bronchial and alveolar epithelial cells linked to pathogenesis in chronic lung disorders. Front Physiol 2023; 14:1094245. [PMID: 36994416 PMCID: PMC10040785 DOI: 10.3389/fphys.2023.1094245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 03/02/2023] [Indexed: 03/15/2023] Open
Abstract
Introduction: Chronic lung disorders involve pathological alterations in the lung tissue with hypoxia as a consequence. Hypoxia may influence the release of inflammatory mediators and growth factors including vascular endothelial growth factor (VEGF) and prostaglandin (PG)E2. The aim of this work was to investigate how hypoxia affects human lung epithelial cells in combination with profibrotic stimuli and its correlation to pathogenesis.Methods: Human bronchial (BEAS-2B) and alveolar (hAELVi) epithelial cells were exposed to either hypoxia (1% O2) or normoxia (21% O2) during 24 h, with or without transforming growth factor (TGF)-β1. mRNA expression of genes and proteins related to disease pathology were analysed with qPCR, ELISA or immunocytochemistry. Alterations in cell viability and metabolic activity were determined.Results: In BEAS-2B and hAELVi, hypoxia significantly dowregulated genes related to fibrosis, mitochondrial stress, oxidative stress, apoptosis and inflammation whereas VEGF receptor 2 increased. Hypoxia increased the expression of Tenascin-C, whereas both hypoxia and TGF-β1 stimuli increased the release of VEGF, IL-6, IL-8 and MCP-1 in BEAS-2B. In hAELVi, hypoxia reduced the release of fibroblast growth factor, epidermal growth factor, PGE2, IL-6 and IL-8, whereas TGF-β1 stimulus significantly increased the release of PGE2 and IL-6. TGF-β1 stimulated BEAS-2B cells showed a decreased release of VEGF-A and IL-8, while TGF-β1 stimulated hAELVi cells showed a decreased release of PGE2 and IL-8 during hypoxia compared to normoxia. Metabolic activity was significantly increased by hypoxia in both epithelial cell types.Discussion: In conclusion, our data indicate that bronchial and alveolar epithelial cells respond differently to hypoxia and profibrotic stimuli. The bronchial epithelium appears more responsive to changes in oxygen levels and remodelling processes compared to the alveoli, suggesting that hypoxia may be a driver of pathogenesis in chronic lung disorders.
Collapse
Affiliation(s)
| | - Martin Ryde
- Respiratory Medicine, Allergology and Palliative Medicine, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Anna Löfdahl
- Lung Biology, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Arturo Ibáñez-Fonseca
- Lung Biology, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Monica Kåredal
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | | | - Ellen Tufvesson
- Respiratory Medicine, Allergology and Palliative Medicine, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Anna-Karin Larsson-Callerfelt
- Lung Biology, Department of Experimental Medical Science, Lund University, Lund, Sweden
- *Correspondence: Anna-Karin Larsson-Callerfelt,
| |
Collapse
|
19
|
Sønstevold L, Czerkies M, Escobedo-Cousin E, Blonski S, Vereshchagina E. Application of Polymethylpentene, an Oxygen Permeable Thermoplastic, for Long-Term on-a-Chip Cell Culture and Organ-on-a-Chip Devices. MICROMACHINES 2023; 14:532. [PMID: 36984939 PMCID: PMC10053898 DOI: 10.3390/mi14030532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/14/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
The applicability of a gas-permeable, thermoplastic material polymethylpentene (PMP) was investigated, experimentally and analytically, for organ-on-a-chip (OoC) and long-term on-a-chip cell cultivation applications. Using a sealed culture chamber device fitted with oxygen sensors, we tested and compared PMP to commonly used glass and polydimethylsiloxane (PDMS). We show that PMP and PDMS have comparable performance for oxygen supply during 4 days culture of epithelial (A549) cells with oxygen concentration stabilizing at 16%, compared with glass control where it decreases to 3%. For the first time, transmission light images of cells growing on PMP were obtained, demonstrating that the optical properties of PMP are suitable for non-fluorescent, live cell imaging. Following the combined transmission light imaging and calcein-AM staining, cell adherence, proliferation, morphology, and viability of A549 cells were shown to be similar on PMP and glass coated with poly-L-lysine. In contrast to PDMS, we demonstrate that a film of PMP as thin as 0.125 mm is compatible with high-resolution confocal microscopy due to its excellent optical properties and mechanical stiffness. PMP was also found to be fully compatible with device sterilization, cell fixation, cell permeabilization and fluorescent staining. We envision this material to extend the range of possible microfluidic applications beyond the current state-of-the-art, due to its beneficial physical properties and suitability for prototyping by different methods. The integrated device and measurement methodology demonstrated in this work are transferrable to other cell-based studies and life-sciences applications.
Collapse
Affiliation(s)
- Linda Sønstevold
- SINTEF Digital, Department of Smart Sensors and Microsystems, Gaustadalléen 23C, 0373 Oslo, Norway
| | - Maciej Czerkies
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego St. 5B, 02-106 Warsaw, Poland
| | - Enrique Escobedo-Cousin
- SINTEF Digital, Department of Smart Sensors and Microsystems, Gaustadalléen 23C, 0373 Oslo, Norway
| | - Slawomir Blonski
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawińskiego St. 5B, 02-106 Warsaw, Poland
| | - Elizaveta Vereshchagina
- SINTEF Digital, Department of Smart Sensors and Microsystems, Gaustadalléen 23C, 0373 Oslo, Norway
| |
Collapse
|
20
|
Powell BH, Turchinovich A, Wang Y, Gololobova O, Buschmann D, Zeiger MA, Umbricht CB, Witwer KW. miR-210 Expression Is Strongly Hypoxia-Induced in Anaplastic Thyroid Cancer Cell Lines and Is Associated with Extracellular Vesicles and Argonaute-2. Int J Mol Sci 2023; 24:4507. [PMID: 36901936 PMCID: PMC10002857 DOI: 10.3390/ijms24054507] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/06/2023] [Accepted: 02/10/2023] [Indexed: 03/03/2023] Open
Abstract
Hypoxia, or low oxygen tension, is frequently found in highly proliferative solid tumors such as anaplastic thyroid carcinoma (ATC) and is believed to promote resistance to chemotherapy and radiation. Identifying hypoxic cells for targeted therapy may thus be an effective approach to treating aggressive cancers. Here, we explore the potential of the well-known hypoxia-responsive microRNA (miRNA) miR-210-3p as a cellular and extracellular biological marker of hypoxia. We compare miRNA expression across several ATC and papillary thyroid cancer (PTC) cell lines. In the ATC cell line SW1736, miR-210-3p expression levels indicate hypoxia during exposure to low oxygen conditions (2% O2). Furthermore, when released by SW1736 cells into the extracellular space, miR-210-3p is associated with RNA carriers such as extracellular vesicles (EVs) and Argonaute-2 (AGO2), making it a potential extracellular marker for hypoxia.
Collapse
Affiliation(s)
- Bonita H. Powell
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Andrey Turchinovich
- Division of Cancer Genome Research, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Heidelberg Biolabs GmbH, 69120 Heidelberg, Germany
| | - Yongchun Wang
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Olesia Gololobova
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Dominik Buschmann
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Martha A. Zeiger
- Center for Cancer Research, National Cancer Institute, National Institute of Health, Bethesda, MD 20892, USA
| | - Christopher B. Umbricht
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Kenneth W. Witwer
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| |
Collapse
|
21
|
Rafeeq MM, Habib AH, Nahhas AF, Binothman N, Aljadani M, Almulhim J, Sain ZM, Alam MZ, Alturki NA, Alam Q, Manish M, Singh RK. Targeting Kaposi's sarcoma associated herpesvirus encoded protease (ORF17) by a lysophosphatidic acid molecule for treating KSHV associated diseases. Front Cell Dev Biol 2023; 11:1060156. [PMID: 36733461 PMCID: PMC9888664 DOI: 10.3389/fcell.2023.1060156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 01/05/2023] [Indexed: 01/19/2023] Open
Abstract
Kaposi's sarcoma associated herpesvirus (KSHV) is causative agent of Kaposi's sarcoma, Multicentric Castleman Disease and Pleural effusion lymphoma. KSHV-encoded ORF17 encodes a protease which cleaves -Ala-Ala-, -Ala-Ser- or -Ala-Thr-bonds. The protease plays an important role in assembly and maturation of new infective virions. In the present study, we investigated expression pattern of KSHV-encoded protease during physiologically allowed as well as chemically induced reactivation condition. The results showed a direct and proportionate relationship between ORF17 expression with reactivation time. We employed virtual screening on a large database of natural products to identify an inhibitor of ORF17 for its plausible targeting and restricting Kaposi's sarcoma associated herpesvirus assembly/maturation. A library of 307,814 compounds of biological origin (A total 481,799 structures) has been used as a screen library. 1-oleoyl-2-hydroxy-sn-glycero-3-phospho-(1'-myo-inositol) was highly effective against ORF17 in in-vitro experiments. The screened compound was tested for the cytotoxic effect and potential for inhibiting Kaposi's sarcoma associated herpesvirus production upon induced reactivation by hypoxia, TPA and butyric acid. Treatment of reactivated KSHV-positive cells with 1-oleoyl-2-hydroxy-sn-glycero-3-phospho-(1'-myo-inositol) resulted in significant reduction in the production of Kaposi's sarcoma associated herpesvirus. The study identified a lysophosphatidic acid molecule for alternate strategy to inhibit KSHV-encoded protease and target Kaposi's sarcoma associated herpesvirus associated malignancies.
Collapse
Affiliation(s)
- Misbahuddin M Rafeeq
- Department of Pharmacology, Faculty of Medicine, Rabigh, King Abdulaziz University, Jeddah, KSA
| | - Alaa Hamed Habib
- Department of Physiology, Faculty of Medicine, King Abdulaziz University, Jeddah, KSA
| | - Alaa F. Nahhas
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, KSA
| | - Najat Binothman
- Department of Chemistry, College of Sciences and Arts, King Abdulaziz University, Rabigh, Saudi Arabia
| | - Majidah Aljadani
- Department of Chemistry, College of Sciences and Arts, King Abdulaziz University, Rabigh, Saudi Arabia
| | - Jawaher Almulhim
- Department of Biological Sciences, King Faisal University, Alahsa, KSA
| | - Ziaullah M Sain
- Department of Microbiology, Faculty of Medicine, Rabigh, King Abdulaziz University, Jeddah, KSA
| | - Mohammad Zubair Alam
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia,Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Norah A Alturki
- Clinical Laboratory Science Department, College of Applied Medical Science, King Saud University, Riyadh, Saudi Arabia
| | - Qamre Alam
- Medical Genomics Research Department, King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Science, Riyadh, Saudi Arabia
| | - Manish Manish
- School of Computer and Integrative Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Rajnish Kumar Singh
- Molecular Biology Unit, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India,*Correspondence: Rajnish Kumar Singh,
| |
Collapse
|
22
|
Chen PW, Huang SK, Chou WC, Chang FR, Cheng YB, Wang HC. Severinia buxifolia-isolated acridones inhibit lung cancer invasion and decrease HIFα protein synthesis involving 5'UTR-mediated translation inhibition. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 109:154570. [PMID: 36610169 DOI: 10.1016/j.phymed.2022.154570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 11/10/2022] [Accepted: 11/19/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Lung cancer is one of the most common cancers worldwide and is by far the leading cause of cancer death attributed to its rapid metastasis and poor prognosis. Given that hypoxia-inducible factors (HIFs) are associated with cancer metastasis, discovering agents to inhibit HIF-mediated invasive cancer is highly desired. PURPOSE This study aimed to investigate the natural acridone compounds isolated from Severinia buxifolia for the potential to delay hypoxia-induced lung cancer invasiveness by HIF inhibition. METHODS Using a hypoxia-responsive element (HRE) luciferase reporter, cell migration and invasion assays, real-time PCR, Western blot, and DNA recombinant clones, compound effect on HIF activity, cancer metastasis, HIF-1α mRNA transcription, HIFs protein stability, and HIF-1α translation were observed under hypoxia conditions. RESULTS Atalaphyllidine (Sbs-A) and atalaphyllinine (Sbs-B) were found to show the most potent effects on HIF transcriptional activity and HIF-1α protein expression in NSCLC cell line A549, although Sbs-A and Sbs-B might not attribute decreasing HIF-1α mRNA expression to potent inhibition of HIF activity. HIF-1α protein stability was not affected by Sbs-A; also, prolyl hydroxylase and proteasome inhibitors could not reverse the inhibitory effect from compounds. Furthermore, 3 - 10 μM low concentrations of Sbs-A inhibited HIF target gene expression, gelatin zymography activity, and A549 cancer invasion. Ultimately, Sbs-A inhibited HIF-1α 5'UTR-mediated translation independent of oxygen concentration, underlying the mechanism of compounds inhibiting HIF-1α protein expression. CONCLUSION Our study proposed Severinia buxifolia-isolated acridone compounds inhibited 5'-mRNA HIFA-mediated translation and provided evidence supporting the ability of acridone compounds in targeting HIFα for delayed lung cancer metastasis.
Collapse
Affiliation(s)
- Pin-Wei Chen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Sheng-Kai Huang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Wen-Cheng Chou
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yuan-Bin Cheng
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Hui-Chun Wang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan; Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan..
| |
Collapse
|
23
|
Norda S, Papadantonaki R. Regulation of cells of the arterial wall by hypoxia and its role in the development of atherosclerosis. VASA 2023; 52:6-21. [PMID: 36484144 DOI: 10.1024/0301-1526/a001044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The cell's response to hypoxia depends on stabilization of the hypoxia-inducible factor 1 complex and transactivation of nuclear factor kappa-B (NF-κB). HIF target gene transcription in cells resident to atherosclerotic lesions adjoins a complex interplay of cytokines and mediators of inflammation affecting cholesterol uptake, migration, and inflammation. Maladaptive activation of the HIF-pathway and transactivation of nuclear factor kappa-B causes monocytes to invade early atherosclerotic lesions, maintaining inflammation and aggravating a low-oxygen environment. Meanwhile HIF-dependent upregulation of the ATP-binding cassette transporter ABCA1 causes attenuation of cholesterol efflux and ultimately macrophages becoming foam cells. Hypoxia facilitates neovascularization by upregulation of vascular endothelial growth factor (VEGF) secreted by endothelial cells and vascular smooth muscle cells lining the arterial wall destabilizing the plaque. HIF-knockout animal models and inhibitor studies were able to show beneficial effects on atherogenesis by counteracting the HIF-pathway in the cell wall. In this review the authors elaborate on the up-to-date literature on regulation of cells of the arterial wall through activation of HIF-1α and its effect on atherosclerotic plaque formation.
Collapse
Affiliation(s)
- Stephen Norda
- Department of Cardiovascular Medicine, University Hospital Münster, Germany
| | - Rosa Papadantonaki
- Emergency Department, West Middlesex University Hospital, Chelsea and Westminster NHS Trust, London, United Kingdom
| |
Collapse
|
24
|
Jaśkiewicz M, Moszyńska A, Króliczewski J, Cabaj A, Bartoszewska S, Charzyńska A, Gebert M, Dąbrowski M, Collawn JF, Bartoszewski R. The transition from HIF-1 to HIF-2 during prolonged hypoxia results from reactivation of PHDs and HIF1A mRNA instability. Cell Mol Biol Lett 2022; 27:109. [PMID: 36482296 PMCID: PMC9730601 DOI: 10.1186/s11658-022-00408-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 11/18/2022] [Indexed: 12/13/2022] Open
Abstract
The hypoxia-inducible factors (HIF) are transcription factors that activate the adaptive hypoxic response when oxygen levels are low. The HIF transcriptional program increases oxygen delivery by inducing angiogenesis and by promoting metabolic reprograming that favors glycolysis. The two major HIFs, HIF-1 and HIF-2, mediate this response during prolonged hypoxia in an overlapping and sequential fashion that is referred to as the HIF switch. Both HIF proteins consist of an unstable alpha chain and a stable beta chain. The instability of the alpha chains is mediated by prolyl hydroxylase (PHD) activity during normoxic conditions, which leads to ubiquitination and proteasomal degradation of the alpha chains. During normoxic conditions, very little HIF-1 or HIF-2 alpha-beta dimers are present because of PHD activity. During hypoxia, however, PHD activity is suppressed, and HIF dimers are stable. Here we demonstrate that HIF-1 expression is maximal after 4 h of hypoxia in primary endothelial cells and then is dramatically reduced by 8 h. In contrast, HIF-2 is maximal at 8 h and remains elevated up to 24 h. There are differences in the HIF-1 and HIF-2 transcriptional profiles, and therefore understanding how the transition between them occurs is important and not clearly understood. Here we demonstrate that the HIF-1 to HIF-2 transition during prolonged hypoxia is mediated by two mechanisms: (1) the HIF-1 driven increase in the glycolytic pathways that reactivates PHD activity and (2) the much less stable mRNA levels of HIF-1α (HIF1A) compared to HIF-2α (EPAS1) mRNA. We also demonstrate that the alpha mRNA levels directly correlate to the relative alpha protein levels, and therefore to the more stable HIF-2 expression during prolonged hypoxia.
Collapse
Affiliation(s)
- Maciej Jaśkiewicz
- grid.11451.300000 0001 0531 3426International Research Agenda 3P- Medicine Laboratory, Medical University of Gdansk, Gdansk, Poland
| | - Adrianna Moszyńska
- grid.11451.300000 0001 0531 3426Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Gdansk, Poland
| | - Jarosław Króliczewski
- grid.11451.300000 0001 0531 3426Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Gdansk, Poland
| | - Aleksandra Cabaj
- grid.419305.a0000 0001 1943 2944Laboratory of Bioinformatics, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Sylwia Bartoszewska
- grid.11451.300000 0001 0531 3426Department of Inorganic Chemistry, Medical University of Gdansk, Gdansk, Poland
| | - Agata Charzyńska
- grid.419305.a0000 0001 1943 2944Laboratory of Bioinformatics, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Magda Gebert
- grid.11451.300000 0001 0531 3426Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Gdansk, Poland
| | - Michał Dąbrowski
- grid.419305.a0000 0001 1943 2944Laboratory of Bioinformatics, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - James F. Collawn
- grid.265892.20000000106344187Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, BirminghamBirmingham, AL 35233 USA
| | - Rafal Bartoszewski
- grid.8505.80000 0001 1010 5103Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, F. Joliot-Curie 14a Street, 50-383 Wroclaw, Poland
| |
Collapse
|
25
|
Singh RK, Bose D, Robertson ES. Epigenetic Reprogramming of Kaposi's Sarcoma-Associated Herpesvirus during Hypoxic Reactivation. Cancers (Basel) 2022; 14:5396. [PMID: 36358814 PMCID: PMC9654037 DOI: 10.3390/cancers14215396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 10/25/2022] [Accepted: 10/28/2022] [Indexed: 09/05/2023] Open
Abstract
The biphasic life cycle (latent and lytic) of Kaposi's sarcoma-associated Herpesvirus (KSHV) is regulated by epigenetic modification of its genome and its associated histone proteins. The temporal events driving epigenetic reprogramming of the KSHV genome on initial infection to establish latency has been well studied, but the reversal of these epigenetic changes during lytic replication, especially under physiological conditions such as hypoxia, has not been explored. In this study, we investigated epigenetic reprogramming of the KSHV genome during hypoxic reactivation. Hypoxia induced extensive enrichment of both transcriptional activators and repressors on the KSHV genome through H3K4Me3, H3K9Me3, and H3K27Me3, as well as histone acetylation (H3Ac) modifications. In contrast to uniform quantitative enrichment with modified histones, a distinct pattern of RTA and LANA enrichment was observed on the KSHV genome. The enrichment of modified histone proteins was due to their overall higher expression levels, which was exclusively seen in KSHV-positive cells. Multiple KSHV-encoded factors such as LANA, RTA, and vGPCR are involved in the upregulation of these modified histones. Analysis of ChIP-sequencing for the initiator DNA polymerase (DNAPol1α) combined with single molecule analysis of replicated DNA (SMARD) demonstrated the involvement of specific KSHV genomic regions that initiate replication in hypoxia.
Collapse
Affiliation(s)
| | | | - Erle S. Robertson
- Department of Otorhinolaryngology-Head and Neck Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| |
Collapse
|
26
|
Zhong B, Seah JJ, Liu F, Ba L, Du J, Wang DY. The role of hypoxia in the pathophysiology of chronic rhinosinusitis. Allergy 2022; 77:3217-3232. [PMID: 35603933 DOI: 10.1111/all.15384] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 04/19/2022] [Accepted: 05/17/2022] [Indexed: 02/05/2023]
Abstract
Chronic rhinosinusitis (CRS) is a chronic inflammatory disease of the nasal cavity characterized by excessive nasal mucus secretion and nasal congestion. The development of CRS is related to pathological mechanisms induced by hypoxia. Under hypoxic conditions, the stable expression of both Hypoxia inducible factor-1 (HIF-1) α and HIF-2α are involved in the immune response and inflammatory pathways of CRS. The imbalance in the composition of nasal microbiota may affect the hypoxic state of CRS and perpetuate existing inflammation. Hypoxia affects the differentiation of nasal epithelial cells such as ciliated cells and goblet cells, induces fibroblast proliferation, and leads to epithelial-mesenchymal transition (EMT) and tissue remodeling. Hypoxia also affects the proliferation and differentiation of macrophages, eosinophils, basophils, and mast cells in sinonasal mucosa, and thus influences the inflammatory state of CRS by regulating T cells and B cells. Given the multifactorial nature in which HIF is linked to CRS, this study aims to elucidate the effect of hypoxia on the pathogenic mechanisms of CRS.
Collapse
Affiliation(s)
- Bing Zhong
- Upper Airways Research Laboratory, Department of Otolaryngology-Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China.,Department of Otolaryngology, Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jun Jie Seah
- Department of Otolaryngology, Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Feng Liu
- Upper Airways Research Laboratory, Department of Otolaryngology-Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Luo Ba
- Department of Otolaryngology, People's Hospital of Tibet Autonomous Region, Lhasa, China
| | - Jintao Du
- Upper Airways Research Laboratory, Department of Otolaryngology-Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - De Yun Wang
- Department of Otolaryngology, Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| |
Collapse
|
27
|
A Tale of Two: When Neural Stem Cells Encounter Hypoxia. Cell Mol Neurobiol 2022:10.1007/s10571-022-01293-6. [DOI: 10.1007/s10571-022-01293-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 10/02/2022] [Indexed: 11/12/2022]
|
28
|
Li L, Sun B, Sun Y. Identification of functional TF-miRNA-hub gene regulatory network associated with ovarian endometriosis. Front Genet 2022; 13:998417. [PMID: 36212136 PMCID: PMC9540245 DOI: 10.3389/fgene.2022.998417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 08/18/2022] [Indexed: 11/13/2022] Open
Abstract
Endometriosis (EMs), one of the most common gynecological diseases, seriously affects the health and wellness of women; however, the underlying pathogenesis remains unclear. This study focused on dysregulated genes and their predicted transcription factors (TFs) and miRNAs, which may provide ideas for further mechanistic research. The microarray expression dataset GSE58178, which included six ovarian endometriosis (OE) samples and six control samples, was downloaded from the Gene Expression Omnibus (GEO) to identify differentially expressed genes (DEGs). Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were performed to study the cellular and organism-level functions of DEGs. The protein-protein interaction (PPI) network was built and visualized using Cytoscape, and modules and hub genes were explored using various algorithms. Furthermore, we predicted miRNAs and TFs of hub genes using online databases, and constructed the TF-miRNA-hub gene network. There were 124 upregulated genes and 66 downregulated genes in EMs tissues. GO enrichment analysis showed that DEGs were concentrated in reproductive structure development and collagen-containing extracellular matrix, while KEGG pathway analysis showed that glycolysis/gluconeogenesis and central carbon metabolism in cancer require further exploration. Subsequently, HIF1A, LDHA, PGK1, TFRC, and CD9 were identified as hub genes, 22 miRNAs and 34 TFs were predicted to be upstream regulators of hub genes, and these molecules were pooled together. In addition, we found three key feedback loops in the network, MYC-miR-34a-5p-LDHA, YY1-miR-155-5p-HIF1A, and RELA-miR-93-5p-HIF1A, which may be closely related to OE development. Taken together, our study structured a TF-miRNA-hub gene network to decipher the molecular mechanism of OE, which may provide novel insights for clinical diagnosis and treatment.
Collapse
Affiliation(s)
- Lu Li
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Bo Sun
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yingpu Sun
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- *Correspondence: Yingpu Sun,
| |
Collapse
|
29
|
Fourie C, du Plessis M, Mills J, Engelbrecht AM. The effect of HIF-1α inhibition in breast cancer cells prior to doxorubicin treatment under conditions of normoxia and hypoxia. Exp Cell Res 2022; 419:113334. [PMID: 36044939 DOI: 10.1016/j.yexcr.2022.113334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND Oxygen deprivation is a key hallmark within solid tumours that contributes to breast-tumour pathophysiology. Under these conditions, neoplastic cells activate several genes, regulated by the HIF-1 transcription factor, which alters the tumour microenvironment to promote survival - including resistance to cell death in therapeutic attempts such as doxorubicin (Dox) treatment. METHODS We investigated HIF-1ɑ as a therapeutic target to sensitize breast cancer cells to Dox treatment. Under both normoxic (21% O2) and hypoxic (∼0.1% O2) conditions, the HIF-1 inhibitor, 2-methoxyestradiol (2-ME), was investigated as an adjuvant for its ability to alter MCF-7 cell viability, apoptosis, autophagy and molecular pathways which are often associated with increased cell survival. RESULTS Here we observed that an inverse relationship between HIF-1ɑ and apoptosis exists and that Dox promotes autophagy under hypoxic conditions. Although adjuvant therapy with 2-ME induced an antagonistic effect in breast cancer cells, upregulated HIF-1ɑ expression in a hypoxic environment promotes treatment resistance and this was attenuated once HIF-1ɑ gene expression was silenced. CONCLUSION Therefore, highlighting the identification of possible hypoxia-targeting therapies for breast cancer patients can be beneficial by promoting more favourable treatment responses.
Collapse
Affiliation(s)
- Carla Fourie
- Department of Physiological Sciences, Faculty of Science, University of Stellenbosch, Stellenbosch, 7600, South Africa.
| | - Manisha du Plessis
- Department of Physiological Sciences, Faculty of Science, University of Stellenbosch, Stellenbosch, 7600, South Africa
| | - Justin Mills
- Department of Physiological Sciences, Faculty of Science, University of Stellenbosch, Stellenbosch, 7600, South Africa
| | - Anna-Mart Engelbrecht
- Department of Physiological Sciences, Faculty of Science, University of Stellenbosch, Stellenbosch, 7600, South Africa; African Cancer Institute (ACI), Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| |
Collapse
|
30
|
Manella G, Ezagouri S, Champigneulle B, Gaucher J, Mendelson M, Lemarie E, Stauffer E, Pichon A, Howe CA, Doutreleau S, Golik M, Verges S, Asher G. The human blood transcriptome exhibits time-of-day-dependent response to hypoxia: Lessons from the highest city in the world. Cell Rep 2022; 40:111213. [PMID: 35977481 PMCID: PMC9396531 DOI: 10.1016/j.celrep.2022.111213] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/27/2022] [Accepted: 07/22/2022] [Indexed: 11/16/2022] Open
Abstract
High altitude exposes humans to hypobaric hypoxia, which induces various physiological and molecular changes. Recent studies point toward interaction between circadian rhythms and the hypoxic response, yet their human relevance is lacking. Here, we examine the effect of different high altitudes in conjunction with time of day on human whole-blood transcriptome upon an expedition to the highest city in the world, La Rinconada, Peru, which is 5,100 m above sea level. We find that high altitude vastly affects the blood transcriptome and, unexpectedly, does not necessarily follow a monotonic response to altitude elevation. Importantly, we observe daily variance in gene expression, especially immune-related genes, which is largely altitude dependent. Moreover, using a digital cytometry approach, we estimate relative changes in abundance of different cell types and find that the response of several immune cell types is time- and altitude dependent. Taken together, our data provide evidence for interaction between the transcriptional response to hypoxia and the time of day in humans. Low oxygen availability upon high altitude vastly affects human blood transcriptome The transcriptomic changes upon altitude elevation are not necessarily monotonic The daily variance in gene expression is dependent on altitude The response of several immune cell types is time- and altitude dependent
Collapse
Affiliation(s)
- Gal Manella
- Department of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Saar Ezagouri
- Department of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Benoit Champigneulle
- HP2 Laboratory, INSERM U1300, Grenoble Alpes University, CHU Grenoble Alpes, Grenoble, France
| | - Jonathan Gaucher
- HP2 Laboratory, INSERM U1300, Grenoble Alpes University, CHU Grenoble Alpes, Grenoble, France
| | - Monique Mendelson
- HP2 Laboratory, INSERM U1300, Grenoble Alpes University, CHU Grenoble Alpes, Grenoble, France
| | - Emeline Lemarie
- HP2 Laboratory, INSERM U1300, Grenoble Alpes University, CHU Grenoble Alpes, Grenoble, France
| | - Emeric Stauffer
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Team "Biologie vasculaire et du globule rouge", Université Claude Bernard Lyon 1, Université de Lyon, France; Laboratoire d'Excellence du Globule Rouge (Labex GR-Ex), PRES Sorbonne, Paris, France
| | - Aurélien Pichon
- Laboratoire MOVE, STAPS, Université de Poitiers, Poitiers, France
| | - Connor A Howe
- Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British Columbia - Okanagan, Kelowna, BC, Canada
| | - Stéphane Doutreleau
- HP2 Laboratory, INSERM U1300, Grenoble Alpes University, CHU Grenoble Alpes, Grenoble, France
| | - Marina Golik
- Department of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Samuel Verges
- HP2 Laboratory, INSERM U1300, Grenoble Alpes University, CHU Grenoble Alpes, Grenoble, France.
| | - Gad Asher
- Department of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel.
| |
Collapse
|
31
|
Reiterer M, Eakin A, Johnson RS, Branco CM. Hyperoxia Reprogrammes Microvascular Endothelial Cell Response to Hypoxia in an Organ-Specific Manner. Cells 2022; 11:cells11162469. [PMID: 36010546 PMCID: PMC9406746 DOI: 10.3390/cells11162469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/27/2022] [Accepted: 08/02/2022] [Indexed: 11/16/2022] Open
Abstract
Organ function relies on microvascular networks to maintain homeostatic equilibrium, which varies widely in different organs and during different physiological challenges. The endothelium role in this critical process can only be evaluated in physiologically relevant contexts. Comparing the responses to oxygen flux in primary murine microvascular EC (MVEC) obtained from brain and lung tissue reveals that supra-physiological oxygen tensions can compromise MVEC viability. Brain MVEC lose mitochondrial activity and undergo significant alterations in electron transport chain (ETC) composition when cultured under standard, non-physiological atmospheric oxygen levels. While glycolytic capacity of both lung and brain MVEC are unchanged by environmental oxygen, the ability to trigger a metabolic shift when oxygen levels drop is greatly compromised following exposure to hyperoxia. This is particularly striking in MVEC from the brain. This work demonstrates that the unique metabolism and function of organ-specific MVEC (1) can be reprogrammed by external oxygen, (2) that this reprogramming can compromise MVEC survival and, importantly, (3) that ex vivo modelling of endothelial function is significantly affected by culture conditions. It further demonstrates that physiological, metabolic and functional studies performed in non-physiological environments do not represent cell function in situ, and this has serious implications in the interpretation of cell-based pre-clinical models.
Collapse
Affiliation(s)
- Moritz Reiterer
- Patrick G Johnston Centre for Cancer Research, Queen’s University, Belfast BT9 7AE, UK
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, UK
| | - Amanda Eakin
- Patrick G Johnston Centre for Cancer Research, Queen’s University, Belfast BT9 7AE, UK
| | - Randall S. Johnson
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, UK
| | - Cristina M. Branco
- Patrick G Johnston Centre for Cancer Research, Queen’s University, Belfast BT9 7AE, UK
- Correspondence:
| |
Collapse
|
32
|
Hu M, Santin JM. Transformation to ischaemia tolerance of frog brain function corresponds to dynamic changes in mRNA co-expression across metabolic pathways. Proc Biol Sci 2022; 289:20221131. [PMID: 35892220 PMCID: PMC9326273 DOI: 10.1098/rspb.2022.1131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Neural activity is costly and requires continuous ATP from aerobic metabolism. Brainstem motor function of American bullfrogs normally collapses after minutes of ischaemia, but following hibernation, it becomes ischaemia-tolerant, generating output for up to 2 h without oxygen or glucose delivery. Transforming the brainstem to function during ischaemia involves a switch to anaerobic glycolysis and brain glycogen. We hypothesized that improving neural performance during ischaemia involves a transcriptional program for glycogen and glucose metabolism. Here we measured mRNA copy number of genes along the path from glycogen metabolism to lactate production using real-time quantitative PCR. The expression of individual genes did not reflect enhanced glucose metabolism. However, the number of co-expressed gene pairs increased early into hibernation, and by the end, most genes involved in glycogen metabolism, glucose transport and glycolysis exhibited striking linear co-expression. By contrast, co-expression of genes in the Krebs cycle and electron transport chain decreased throughout hibernation. Our results uncover reorganization of the metabolic transcriptional network associated with a shift to ischaemia tolerance in brain function. We conclude that modifying gene co-expression may be a critical step in synchronizing storage and use of glucose to achieve ischaemia tolerance in active neural circuits.
Collapse
Affiliation(s)
- Min Hu
- Department of Biology, University of North Carolina at Greensboro, Greensboro, NC, USA
| | - Joseph M. Santin
- Department of Biology, University of North Carolina at Greensboro, Greensboro, NC, USA
| |
Collapse
|
33
|
Mitochondrial oxidative phosphorylation became functional under aglycemic hypoxia conditions in A549 cells. Mol Biol Rep 2022; 49:8219-8228. [PMID: 35834035 DOI: 10.1007/s11033-022-07400-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 03/17/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND Normal cells produce energy (ATP) through mitochondrial oxidative phosphorylation in the presence of oxygen. However, many of the cancer cells produce energy with accelerated glycolysis and perform lactic acid production even under normoxic conditions called "The Warburg Effect". In this study, human lung carcinoma cells (A549) were incubated in either a normoxic or hypoxic environment containing 5 mM glucose (Glc 5), 25 mM glucose (Glc 25), or 10 mM galactose (OXPHOS/aglycemic), and then the bioenergetic pathway was anaylsed. METHODS AND RESULTS HIF-1α stabilization of A549 cells with different metabolic conditions in normoxia and hypoxia (1% O2) was determined using the western blot method. After that, L-lactic acid analysis, p-PDH/PDH expression ratio, ATP analysis, and citrate synthase activity experiments were also performed. It was determined that HIF-1α stabilization reached the maximum level at the 4 h. It has been found that glycolytic cells produce approximately five times more lactate than OXPHOS cells under both normoxia and hypoxia conditions and also have a higher p-PDH/PDH ratio. It has been determined that citrate synthase activity in hypoxia of all metabolic conditions is lower than normoxia. It has been determined that Glc 5 and Glc 25 cells have more ATP production under normoxia than Glc 5 and Glc 25 cells in hypoxia. OXPHOS cells have showed more ATP production in hypoxia. CONCLUSION It has been determined that oxidative phosphorylation became functional in a hypoxic aglycemic environment despite the metabolic programming regulated by HIF-1α. This data is important in determining targets for therapeutic intervention.
Collapse
|
34
|
Xie M, Zhang Y, Xiong Z, Hines S, Shangjiang Y, Clark KL, Tan S, Alexander PG, Lin H. Generation of hyaline-like cartilage tissue from human mesenchymal stromal cells within the self-generated extracellular matrix. Acta Biomater 2022; 149:150-166. [PMID: 35779770 DOI: 10.1016/j.actbio.2022.06.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 12/20/2022]
Abstract
Chondrocytic hypertrophy, a phenotype not observed in healthy hyaline cartilage, is often concomitant with the chondrogenesis of human mesenchymal stromal cells (hMSCs). This undesired feature represents one of the major obstacles in applying hMSCs for hyaline cartilage repair. Previously, we developed a method to induce hMSC chondrogenesis within self-generated extracellular matrix (mECM), which formed a cartilage tissue with a lower hypertrophy level than conventional hMSC pellets. In this study, we aimed to test the utility of hypoxia and insulin-like growth factor-1 (IGF1) on further reducing hypertrophy. MSC-mECM constructs were first subjected to chondrogenic culture in normoxic or hypoxic (5%) conditions. The results indicated that hMSC-derived cartilage formed in hypoxic culture displayed a significantly reduced hypertrophy level than normoxic culture. However, hMSC chondrogenesis was also suppressed under hypoxic culture, partially due to the reduced activity of the IGF1 pathway. IGF1 was then supplemented in the chondrogenic medium, which promoted remarkable hMSC chondrogenesis under hypoxic culture. Interestingly, the IGF1-enhanced hMSC chondrogenesis, under hypoxic culture, was not at the expense of promoting significantly increased hypertrophy. Lastly, the cartilage tissues created by hMSCs with different conditions were implanted into osteochondral defect in rats. The results indicated that the tissue formed under hypoxic condition and induced with IGF1-supplemented chondrogenic medium displayed the best reparative results with minimal hypertrophy level. Our results demonstrate a new method to generate hyaline cartilage-like tissue from hMSCs without using exogenous scaffolds, which further pave the road for the clinical application of hMSC-based cartilage tissue engineering. STATEMENT OF SIGNIFICANCE: In this study, hyaline cartilage-like tissues were generated from human mesenchymal stromal cells (hMSCs), which displayed robust capacity in repairing the osteochondral defect in rats. In particular, the extracellular matrix created by hMSCs was used, so no exogenous scaffold was needed. Through a series of optimization, we defined that hypoxic culture and supplementation of insulin-like growth factor-1 (IGF-1) in chondrogenic medium resulted in robust cartilage formation with minimal hypertrophy. We also demonstrated that hypoxic culture suppressed chondrogenesis and hypertrophy through modulating the Wnt/β-catenin and IGF1 pathways, respectively. Our results demonstrate a new method to generate hyaline cartilage-like tissue from hMSCs without using exogenous scaffolds, which will further pave the road for the clinical application of hMSCs-based cartilage tissue engineering.
Collapse
Affiliation(s)
- Mingsheng Xie
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Room 217, Pittsburgh, PA 15217, USA; Department of Orthopaedic Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yiqian Zhang
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Room 217, Pittsburgh, PA 15217, USA; Department of Orthopaedic Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Zixuan Xiong
- Xiangya School of Medicine, Central South University, Changsha, Hunan, 410008, China
| | - Sophie Hines
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Room 217, Pittsburgh, PA 15217, USA
| | - Yingzi Shangjiang
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Room 217, Pittsburgh, PA 15217, USA
| | - Karen L Clark
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Room 217, Pittsburgh, PA 15217, USA
| | - Susheng Tan
- Department of Electrical and Computer Engineering, Swanson School of Engineering, and Petersen Institute of NanoScience and Engineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Peter G Alexander
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Room 217, Pittsburgh, PA 15217, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA
| | - Hang Lin
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Room 217, Pittsburgh, PA 15217, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA; Department of Bioengineering, University of Pittsburgh Swanson School of Engineering, Pittsburgh, PA 15219, USA.
| |
Collapse
|
35
|
Group II Metabotropic Glutamate Receptors Reduce Apoptosis and Regulate BDNF and GDNF Levels in Hypoxic-Ischemic Injury in Neonatal Rats. Int J Mol Sci 2022; 23:ijms23137000. [PMID: 35806000 PMCID: PMC9266366 DOI: 10.3390/ijms23137000] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 12/13/2022] Open
Abstract
Birth asphyxia causes brain injury in neonates, but a fully successful treatment has yet to be developed. This study aimed to investigate the effect of group II mGlu receptors activation after experimental birth asphyxia (hypoxia-ischemia) on the expression of factors involved in apoptosis and neuroprotective neurotrophins. Hypoxia-ischemia (HI) on 7-day-old rats was used as an experimental model. The effects of intraperitoneal application of mGluR2 agonist LY379268 (5 mg/kg) and the specific mGluR3 agonist NAAG (5 mg/kg) (1 h or 6 h after HI) on apoptotic processes and initiation of the neuroprotective mechanism were investigated. LY379268 and NAAG applied shortly after HI prevented brain damage and significantly decreased pro-apoptotic Bax and HtrA2/Omi expression, increasing expression of anti-apoptotic Bcl-2. NAAG or LY379268 applied at both times also decreased HIF-1α formation. HI caused a significant decrease in BDNF concentration, which was restored after LY379268 or NAAG administration. HI-induced increase in GDNF concentration was decreased after administration of LY379268 or NAAG. Our results show that activation of mGluR2/3 receptors shortly after HI prevents brain damage by the inhibition of excessive glutamate release and apoptotic damage decrease. mGluR2 and mGluR3 agonists produced comparable results, indicating that both receptors may be a potential target for early treatment in neonatal HI.
Collapse
|
36
|
Chinn HK, Gardell JL, Matsumoto LR, Labadie KP, Mihailovic TN, Lieberman NAP, Davis A, Pillarisetty VG, Crane CA. Hypoxia-inducible lentiviral gene expression in engineered human macrophages. J Immunother Cancer 2022; 10:jitc-2021-003770. [PMID: 35728871 PMCID: PMC9214393 DOI: 10.1136/jitc-2021-003770] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2022] [Indexed: 11/13/2022] Open
Abstract
Background Human immune cells, including monocyte-derived macrophages, can be engineered to deliver proinflammatory cytokines, bispecific antibodies, and chimeric antigen receptors to support immune responses in different disease settings. When gene expression is regulated by constitutively active promoters, lentiviral payload gene expression is unregulated, and can result in potentially toxic quantities of proteins. Regulated delivery of lentivirally encoded proteins may allow localized or conditional therapeutic protein expression to support safe delivery of adoptively transferred, genetically modified cells with reduced capacity for systemic toxicities. Methods In this study, we engineered human macrophages to express genes regulated by hypoxia responsive elements included in the lentiviral promoter region to drive conditional lentiviral gene expression only under hypoxic conditions. We tested transduced macrophages cultured in hypoxic conditions for the transient induced expression of reporter genes and the secreted cytokine, interleukin-12. Expression of hypoxia-regulated genes was investigated both transcriptionally and translationally, and in the presence of human tumor cells in a slice culture system. Finally, hypoxia-regulated gene expression was evaluated in a subcutaneous humanized-mouse cancer model. Results Engineered macrophages were shown to conditionally and tranisently express lentivirally encoded gene protein products, including IL-12 in hypoxic conditions in vitro. On return to normoxic conditions, lentiviral payload expression returned to basal levels. Reporter genes under the control of hypoxia response elements were upregulated under hypoxic conditions in the presence of human colorectal carcinoma cells and in the hypoxic xenograft model of glioblastoma, suggesting utility for systemic engineered cell delivery capable of localized gene delivery in cancer. Conclusions Macrophages engineered to express hypoxia-regulated payloads have the potential to be administered systemically and conditionally express proteins in tissues with hypoxic conditions. In contrast to immune cells that function or survive poorly in hypoxic conditions, macrophages maintain a proinflammatory phenotype that may support continued gene and protein expression when regulated by conditional hypoxia responsive elements and naturally traffic to hypoxic microenvironments, making them ideal vehicles for therapeutic payloads to hypoxic tissues, such as solid tumors. With the ability to fine-tune delivery of potent proteins in response to endogenous microenvironments, macrophage-based cellular therapies may therefore be designed for different disease settings.
Collapse
Affiliation(s)
- Harrison K Chinn
- Ben Towne Center for Childhood Cancer Research, Seattle Children's Research Institute, Seattle, Washington, USA
| | - Jennifer L Gardell
- Ben Towne Center for Childhood Cancer Research, Seattle Children's Research Institute, Seattle, Washington, USA.,Mozart Therapeutics, Seattle, Washington, USA
| | - Lisa R Matsumoto
- Ben Towne Center for Childhood Cancer Research, Seattle Children's Research Institute, Seattle, Washington, USA
| | - Kevin P Labadie
- Department of Surgery, University of Washington, Seattle, Washington, USA
| | - Tara N Mihailovic
- Department of Surgery, University of Washington, Seattle, Washington, USA
| | - Nicole A P Lieberman
- Ben Towne Center for Childhood Cancer Research, Seattle Children's Research Institute, Seattle, Washington, USA
| | - Amira Davis
- Ben Towne Center for Childhood Cancer Research, Seattle Children's Research Institute, Seattle, Washington, USA
| | | | | |
Collapse
|
37
|
Yoshida T, Okumura T, Matsuo Y, Okuyama T, Michiura T, Kaibori M, Umezaki N, Bono H, Hirota K, Sekimoto M. Activation of transcription factor HIF inhibits IL-1β-induced NO production in primary cultured rat hepatocytes. Nitric Oxide 2022; 124:1-14. [PMID: 35460897 DOI: 10.1016/j.niox.2022.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 04/07/2022] [Accepted: 04/08/2022] [Indexed: 10/18/2022]
Abstract
Roxadustat and other hypoxia-inducible factor-prolyl hydroxylase inhibitors (HIF-PHIs) have recently been approved for the treatment of chronic renal anemia. In macrophages and monocytes, the activation of HIF-1 by pro-inflammatory cytokines induces iNOS expression and activity through the NF-κB pathway to produce nitric oxide (NO), which causes liver injury when excessively produced. Few studies have reported a relationship between HIF activity and iNOS induction in hepatocytes. We investigated the effect of drug- and hypoxia-induced HIF activations on NO production in primary cultured rat hepatocytes. Roxadustat treatment and hypoxic conditions activated HIF. Contrary to expectations, HIF-PHI treatment and hypoxia inhibited IL-1β-induced NO production. RNA-Seq analysis of mRNA expression in rat hepatocytes showed that roxadustat treatment decreased the expression of genes related to inflammation, and genes in the NF-κB signaling pathway were induced by IL-1β. Moreover, roxadustat suppressed IL-1β-activated signaling pathways in an HIF-dependent manner. GalN/LPS-treated rats were used as in vivo models of hepatic injury, and roxadustat treatment showed a tendency to suppress the death of rats. Therefore, exogenous HIF-1 activation, including HIF-PHI and hypoxia exposures, suppressed IL-1β-induced iNOS mRNA expression and subsequent NO production in hepatocytes, by suppressing the NF-κB signaling pathway. Roxadustat treatment suppresses the expression of pro-inflammatory genes by activating HIF, and thus may exhibit hepatoprotective effects.
Collapse
Affiliation(s)
- Terufumi Yoshida
- Department of Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan.
| | - Tadayoshi Okumura
- Department of Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan; Research Organization of Science and Technology, Ritsumeikan University, 1-1 Noji-higashi, Kusatsu, Shiga, 525-8577, Japan.
| | - Yoshiyuki Matsuo
- Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan.
| | - Tetsuya Okuyama
- Department of Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan; Research Organization of Science and Technology, Ritsumeikan University, 1-1 Noji-higashi, Kusatsu, Shiga, 525-8577, Japan.
| | - Taku Michiura
- Department of Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan.
| | - Masaki Kaibori
- Department of Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan.
| | - Nodoka Umezaki
- Department of Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan.
| | - Hidemasa Bono
- Program of Biomedical Science, Graduate School of Integrated Sciences for Life, Hiroshima University, 3-10-23 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-0046, Japan.
| | - Kiichi Hirota
- Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan.
| | - Mitsugu Sekimoto
- Department of Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan.
| |
Collapse
|
38
|
Hussain K, Liu R, Smith RCG, Müller KTJ, Ghorbani M, Macari S, Cleary KLS, Oldham RJ, Foxall RB, James S, Booth SG, Murray T, Dahal LN, Hargreaves CE, Kemp RS, Longley J, Douglas J, Markham H, Chee SJ, Stopforth RJ, Roghanian A, Carter MJ, Ottensmeier CH, Frendéus B, Cutress RI, French RR, Glennie MJ, Strefford JC, Thirdborough SM, Beers SA, Cragg MS. HIF activation enhances FcγRIIb expression on mononuclear phagocytes impeding tumor targeting antibody immunotherapy. J Exp Clin Cancer Res 2022; 41:131. [PMID: 35392965 PMCID: PMC8988350 DOI: 10.1186/s13046-022-02294-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 02/20/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Hypoxia is a hallmark of the tumor microenvironment (TME) and in addition to altering metabolism in cancer cells, it transforms tumor-associated stromal cells. Within the tumor stromal cell compartment, tumor-associated macrophages (TAMs) provide potent pro-tumoral support. However, TAMs can also be harnessed to destroy tumor cells by monoclonal antibody (mAb) immunotherapy, through antibody dependent cellular phagocytosis (ADCP). This is mediated via antibody-binding activating Fc gamma receptors (FcγR) and impaired by the single inhibitory FcγR, FcγRIIb. METHODS We applied a multi-OMIC approach coupled with in vitro functional assays and murine tumor models to assess the effects of hypoxia inducible factor (HIF) activation on mAb mediated depletion of human and murine cancer cells. For mechanistic assessments, siRNA-mediated gene silencing, Western blotting and chromatin immune precipitation were utilized to assess the impact of identified regulators on FCGR2B gene transcription. RESULTS We report that TAMs are FcγRIIbbright relative to healthy tissue counterparts and under hypoxic conditions, mononuclear phagocytes markedly upregulate FcγRIIb. This enhanced FcγRIIb expression is transcriptionally driven through HIFs and Activator protein 1 (AP-1). Importantly, this phenotype reduces the ability of macrophages to eliminate anti-CD20 monoclonal antibody (mAb) opsonized human chronic lymphocytic leukemia cells in vitro and EL4 lymphoma cells in vivo in human FcγRIIb+/+ transgenic mice. Furthermore, post-HIF activation, mAb mediated blockade of FcγRIIb can partially restore phagocytic function in human monocytes. CONCLUSION Our findings provide a detailed molecular and cellular basis for hypoxia driven resistance to antitumor mAb immunotherapy, unveiling a hitherto unexplored aspect of the TME. These findings provide a mechanistic rationale for the modulation of FcγRIIb expression or its blockade as a promising strategy to enhance approved and novel mAb immunotherapies.
Collapse
Affiliation(s)
- Khiyam Hussain
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Rena Liu
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Rosanna C G Smith
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Kri T J Müller
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Mohammadmersad Ghorbani
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
- Cancer Genomics Group, Southampton Experimental Cancer Medicine Centre, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Sofia Macari
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Kirstie L S Cleary
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Robert J Oldham
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Russell B Foxall
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Sonya James
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Steven G Booth
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Tom Murray
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Lekh N Dahal
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Chantal E Hargreaves
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
- Nuffield Department of Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, UK
| | - Robert S Kemp
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Jemma Longley
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - James Douglas
- University Hospital Southampton, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, Hampshire, UK
| | - Hannah Markham
- University Hospital Southampton, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, Hampshire, UK
| | - Serena J Chee
- CRUK Southampton Centre, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Richard J Stopforth
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Ali Roghanian
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Matthew J Carter
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Christian H Ottensmeier
- CRUK Southampton Centre, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Bjorn Frendéus
- Preclinical Research, BioInvent International AB, Sölvegatan 41, 22370, Lund, Sweden
| | - Ramsey I Cutress
- CRUK Southampton Centre, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Ruth R French
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Martin J Glennie
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Jonathan C Strefford
- Cancer Genomics Group, Southampton Experimental Cancer Medicine Centre, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Stephen M Thirdborough
- CRUK Southampton Centre, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK
| | - Stephen A Beers
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK.
| | - Mark S Cragg
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK.
| |
Collapse
|
39
|
Targeting HIF-2α in the Tumor Microenvironment: Redefining the Role of HIF-2α for Solid Cancer Therapy. Cancers (Basel) 2022; 14:cancers14051259. [PMID: 35267567 PMCID: PMC8909461 DOI: 10.3390/cancers14051259] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/26/2022] [Accepted: 02/26/2022] [Indexed: 02/06/2023] Open
Abstract
Inadequate oxygen supply, or hypoxia, is characteristic of the tumor microenvironment and correlates with poor prognosis and therapeutic resistance. Hypoxia leads to the activation of the hypoxia-inducible factor (HIF) signaling pathway and stabilization of the HIF-α subunit, driving tumor progression. The homologous alpha subunits, HIF-1α and HIF-2α, are responsible for mediating the transcription of a multitude of critical proteins that control proliferation, angiogenic signaling, metastasis, and other oncogenic factors, both differentially and sequentially regulating the hypoxic response. Post-translational modifications of HIF play a central role in its behavior as a mediator of transcription, as well as the temporal transition from HIF-1α to HIF-2α that occurs in response to chronic hypoxia. While it is evident that HIF-α is highly dynamic, HIF-2α remains vastly under-considered. HIF-2α can intensify the behaviors of the most aggressive tumors by adapting the cell to oxidative stress, thereby promoting metastasis, tissue remodeling, angiogenesis, and upregulating cancer stem cell factors. The structure, function, hypoxic response, spatiotemporal dynamics, and roles in the progression and persistence of cancer of this HIF-2α molecule and its EPAS1 gene are highlighted in this review, alongside a discussion of current therapeutics and future directions.
Collapse
|
40
|
Mokoala KMG, Lawal IO, Maserumule LC, Hlongwa KN, Ndlovu H, Reed J, Bida M, Maes A, van de Wiele C, Mahapane J, Davis C, Jeong JM, Popoola G, Vorster M, Sathekge MM. A Prospective Investigation of Tumor Hypoxia Imaging with 68Ga-Nitroimidazole PET/CT in Patients with Carcinoma of the Cervix Uteri and Comparison with 18F-FDG PET/CT: Correlation with Immunohistochemistry. J Clin Med 2022; 11:jcm11040962. [PMID: 35207237 PMCID: PMC8876585 DOI: 10.3390/jcm11040962] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 02/08/2022] [Accepted: 02/10/2022] [Indexed: 12/26/2022] Open
Abstract
Hypoxia in cervical cancer has been associated with a poor prognosis. Over the years 68Ga labelled nitroimidazoles have been studied and have shown improved kinetics. We present our initial experience of hypoxia Positron Emission Tomography (PET) imaging in cervical cancer with 68Ga-Nitroimidazole derivative and the correlation with 18F-FDG PET/CT and immunohistochemistry. Twenty women with cervical cancer underwent both 18F-FDG and 68Ga-Nitroimidazole PET/CT imaging. Dual-point imaging was performed for 68Ga-Nitroimidazole PET. Immunohistochemical analysis was performed with hypoxia inducible factor-1α (HIF-1α). We documented SUVmax, SUVmean of the primary lesions as well as tumor to muscle ratio (TMR), tumor to blood (TBR), metabolic tumor volume (MTV) and hypoxic tumor volume (HTV). There was no significant difference in the uptake of 68Ga-Nitroimidazole between early and delayed imaging. Twelve patients had uptake on 68Ga-Nitroimidazole PET. Ten patients demonstrated varying intensities of HIF-1α expression and six of these also had uptake on 68Ga-Nitroimidazole PET. We found a strong negative correlation between HTV and immunohistochemical staining (r = −0.660; p = 0.019). There was no correlation between uptake on PET imaging and immunohistochemical analysis with HIF-1α. Two-thirds of the patients demonstrated hypoxia on 68Ga-Nitroimidazole PET imaging.
Collapse
Affiliation(s)
- Kgomotso M. G. Mokoala
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
| | - Ismaheel O. Lawal
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
- Nuclear Medicine Research Infrastructure (NuMeRI), Steve Biko Academic Hospital, Pretoria 0001, South Africa
| | - Letjie C. Maserumule
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
| | - Khanyisile N. Hlongwa
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
| | - Honest Ndlovu
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
| | - Janet Reed
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
| | - Meshack Bida
- Department of Anatomical Pathology, National Health Laboratory Services, Pretoria 0001, South Africa;
| | - Alex Maes
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
- Department of Nuclear Medicine, Katholieke University Leuven, 8500 Kortrijk, Belgium
| | - Christophe van de Wiele
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
- Department of Radiology and Nuclear Medicine, University of Ghent, 9000 Ghent, Belgium
| | - Johncy Mahapane
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
| | - Cindy Davis
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
| | - Jae Min Jeong
- Radiation Applied Life Sciences, Department of Nuclear Medicine, Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul 03080, Korea;
- Cancer Research Institute, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Gbenga Popoola
- Department of Epidemiology and Community Health, University of Ilorin, Ilorin 240102, Nigeria;
| | - Mariza Vorster
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
- Nuclear Medicine Research Infrastructure (NuMeRI), Steve Biko Academic Hospital, Pretoria 0001, South Africa
| | - Mike M. Sathekge
- Department of Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa; (K.M.G.M.); (I.O.L.); (L.C.M.); (K.N.H.); (H.N.); (J.R.); (A.M.); (C.v.d.W.); (J.M.); (C.D.); (M.V.)
- Nuclear Medicine Research Infrastructure (NuMeRI), Steve Biko Academic Hospital, Pretoria 0001, South Africa
- Correspondence:
| |
Collapse
|
41
|
Wang X, Du ZW, Xu TM, Wang XJ, Li W, Gao JL, Li J, Zhu H. HIF-1α Is a Rational Target for Future Ovarian Cancer Therapies. Front Oncol 2022; 11:785111. [PMID: 35004308 PMCID: PMC8739787 DOI: 10.3389/fonc.2021.785111] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 12/06/2021] [Indexed: 01/17/2023] Open
Abstract
Ovarian cancer is the eighth most commonly diagnosed cancer among women worldwide. Even with the development of novel drugs, nearly one-half of the patients with ovarian cancer die within five years of diagnosis. These situations indicate the need for novel therapeutic agents for ovarian cancer. Increasing evidence has shown that hypoxia-inducible factor-1α(HIF-1α) plays an important role in promoting malignant cell chemoresistance, tumour metastasis, angiogenesis, immunosuppression and intercellular interactions. The unique microenvironment, crosstalk and/or interaction between cells and other characteristics of ovarian cancer can influence therapeutic efficiency or promote the disease progression. Inhibition of the expression or activity of HIF-1α can directly or indirectly enhance the therapeutic responsiveness of tumour cells. Therefore, it is reasonable to consider HIF-1α as a potential therapeutic target for ovarian cancer. In this paper, we summarize the latest research on the role of HIF-1α and molecules which can inhibit HIF-1α expression directly or indirectly in ovarian cancer, and drug clinical trials about the HIF-1α inhibitors in ovarian cancer or other solid malignant tumours.
Collapse
Affiliation(s)
- Xin Wang
- Department of Obstetrics and Gynaecology, The Second Hospital of Jilin University, Changchun, China
| | - Zhen-Wu Du
- Department of Orthopaedics, The Second Hospital of Jilin University, Changchun, China.,Research Center, The Second Hospital of Jilin University, Changchun, China
| | - Tian-Min Xu
- Department of Obstetrics and Gynaecology, The Second Hospital of Jilin University, Changchun, China
| | - Xiao-Jun Wang
- Department of Obstetrics and Gynaecology, The Second Hospital of Jilin University, Changchun, China
| | - Wei Li
- Department of Obstetrics and Gynaecology, The Second Hospital of Jilin University, Changchun, China
| | - Jia-Li Gao
- Department of Obstetrics and Gynaecology, The Second Hospital of Jilin University, Changchun, China
| | - Jing Li
- Department of Obstetrics and Gynaecology, The Second Hospital of Jilin University, Changchun, China
| | - He Zhu
- Department of Obstetrics and Gynaecology, The Second Hospital of Jilin University, Changchun, China
| |
Collapse
|
42
|
Abstract
Hypoxia is defined as a cellular stress condition caused by a decrease in oxygen below physiologically normal levels. Cells in the core of a rapidly growing solid tumor are faced with the challenge of inadequate supply of oxygen through the blood, owing to improper vasculature inside the tumor. This hypoxic microenvironment inside the tumor initiates a gene expression program that alters numerous signaling pathways, allowing the cancer cell to eventually evade adverse conditions and attain a more aggressive phenotype. A multitude of studies covering diverse aspects of gene regulation has tried to uncover the mechanisms involved in hypoxia-induced tumorigenesis. The role of epigenetics in executing widespread and dynamic changes in gene expression under hypoxia has been gaining an increasing amount of support in recent years. This chapter discusses, in detail, various epigenetic mechanisms driving the cellular response to hypoxia in cancer.
Collapse
Affiliation(s)
- Deepak Pant
- Epigenetics and RNA Processing Lab (ERPL), Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Srinivas Abhishek Mutnuru
- Epigenetics and RNA Processing Lab (ERPL), Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Sanjeev Shukla
- Epigenetics and RNA Processing Lab (ERPL), Indian Institute of Science Education and Research Bhopal, Bhopal, India.
| |
Collapse
|
43
|
Matic S, Dia VP. Bovine milk exosomes affected proliferation of macrophages under hypoxia. Curr Res Food Sci 2022; 5:2108-2113. [DOI: 10.1016/j.crfs.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/28/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022] Open
|
44
|
Ayob AZ, Ramasamy TS. Prolonged hypoxia switched on cancer stem cell-like plasticity in HepG2 tumourspheres cultured in serum-free media. In Vitro Cell Dev Biol Anim 2021; 57:896-911. [PMID: 34750738 DOI: 10.1007/s11626-021-00625-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/29/2021] [Indexed: 10/19/2022]
Abstract
Tumour hypoxia drives resistance and aggressiveness, and in large part, contributes to treatment failure thereby causing cancer-related deaths. The rapid and uncontrolled tumour growth develops not only a hypoxic niche but also a nutrient-deprived condition due to insufficient blood supply; together, these create a stressful tumour niche, further promoting higher aggressiveness and resistance features of cancer. However, how cellular responses in the prolonged stress is associated with cancer stem cells (CSCs), which is linked to these features, remains unclear. Here, we established HepG2 tumoursphere culture in a hypoxic and serum-free condition that recapitulated differential responses to prolonged tumour growth pressures, evident by their progressive changes in the morphology of tumoursphere formation over a course of 15-day culture. HepG2 tumourspheres formed larger sphere sizes of > 200 μm in hypoxic conditions, concomitant with higher cell yield and upregulation of PCNA marker at day 7, corresponding with higher self-renewal capacity when cultured in SFM compared to SM. Notably, prolonged growth of HepG2 tumourspheres for 15 days under hypoxic and SFM condition increased their sphere counts, yet significantly reduced their cell yield along with downregulation of PCNA expression. Gene expression analysis showed that HepG2 tumourspheres on day 15 exhibited enhanced expression of markers of quiescence, stemness, EMT, and chemoresistance. Interestingly, analysis of HIF1α and HIF2α and their target gene expression indicated complementary HIF expression with preferential upregulation of HIF2α was observed in HepG2 tumourspheres in prolonged hypoxic and serum-free conditions, suggesting HIF2α-dependency and plausibility of the HIF1α-HIF2α switch that govern their survival by promoting CSC-like programmes. Altogether, these findings suggest the implication of prolonged hypoxia and nutrient deprivation stress in promoting CSC-like programmes in cancer cells recapitulating their plasticity, hence having opened many research directions that enable development of effective targeting of CSCs and precision medicine for treating cancer.
Collapse
Affiliation(s)
- Ain Zubaidah Ayob
- Stem Cell Biology Laboratory, Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Thamil Selvee Ramasamy
- Stem Cell Biology Laboratory, Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| |
Collapse
|
45
|
Najafi S, Tan SC, Raee P, Rahmati Y, Asemani Y, Lee EHC, Hushmandi K, Zarrabi A, Aref AR, Ashrafizadeh M, Kumar AP, Ertas YN, Ghani S, Aghamiri S. Gene regulation by antisense transcription: A focus on neurological and cancer diseases. Biomed Pharmacother 2021; 145:112265. [PMID: 34749054 DOI: 10.1016/j.biopha.2021.112265] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/22/2021] [Accepted: 09/27/2021] [Indexed: 02/07/2023] Open
Abstract
Advances in high-throughput sequencing over the past decades have led to the identification of thousands of non-coding RNAs (ncRNAs), which play a major role in regulating gene expression. One emerging class of ncRNAs is the natural antisense transcripts (NATs), the RNA molecules transcribed from the opposite strand of a protein-coding gene locus. NATs are known to concordantly and discordantly regulate gene expression in both cis and trans manners at the transcriptional, post-transcriptional, translational, and epigenetic levels. Aberrant expression of NATs can therefore cause dysregulation in many biological pathways and has been observed in many genetic diseases. This review outlines the involvements and mechanisms of NATs in the pathogenesis of various diseases, with a special emphasis on neurodegenerative diseases and cancer. We also summarize recent findings on NAT knockdown and/or overexpression experiments and discuss the potential of NATs as promising targets for future gene therapies.
Collapse
Affiliation(s)
- Sajad Najafi
- Student research committee, Department of medical biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shing Cheng Tan
- UKM Medical Molecular Biology Institute, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Pourya Raee
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Yazdan Rahmati
- Department of Medical Genetics and Molecular Biology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Yahya Asemani
- Department of Immunology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - E Hui Clarissa Lee
- Cancer Science Institute of Singapore and Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore; NUS Centre for Cancer Research (N2CR), Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Kiavash Hushmandi
- Department of Food Hygiene and Quality Control, Division of epidemiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Ali Zarrabi
- Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, 34956 Istanbul, Turkey; Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Istanbul, Sariyer 34396, Turkey
| | - Amir Reza Aref
- Belfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA; Vice President at Translational Sciences, Xsphera Biosciences Inc, 6 Tide Street, Boston, MA 02210, USA
| | - Milad Ashrafizadeh
- Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, 34956 Istanbul, Turkey; Faculty of Engineering and Natural Sciences, Sabanci University, Orta Mahalle, Üniversite Caddesi No. 27, Orhanlı, Tuzla, 34956 Istanbul, Turkey
| | - Alan Prem Kumar
- Cancer Science Institute of Singapore and Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore; NUS Centre for Cancer Research (N2CR), Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Yavuz Nuri Ertas
- Department of Biomedical Engineering, Erciyes University, Kayseri 38039, Turkey; ERNAM-Nanotechnology Research and Application Center, Erciyes University, Kayseri 38039, Turkey
| | - Sepideh Ghani
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahin Aghamiri
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
46
|
Reis RS, Poirier Y. Making sense of the natural antisense transcript puzzle. TRENDS IN PLANT SCIENCE 2021; 26:1104-1115. [PMID: 34303604 DOI: 10.1016/j.tplants.2021.07.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 06/29/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
In plants, thousands of genes are associated with antisense transcription, which often produces noncoding RNAs. Although widespread, sense-antisense pairs have been implicated in a limited variety of functions in plants and are often thought to form extensive dsRNA stretches triggering gene silencing. In this opinion, we show that evidence does not support gene silencing as a major role for antisense transcription. In fact, it is more likely that antisense transcripts play diverse functions in gene regulation. We propose a general framework for the initial functional dissection of antisense transcripts, suggesting testable hypotheses relying on an experiment-based decision tree. By moving beyond the gene silencing paradigm, we argue that a broad and diverse role for natural antisense transcription will emerge.
Collapse
Affiliation(s)
- Rodrigo Siqueira Reis
- Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland.
| | - Yves Poirier
- Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland.
| |
Collapse
|
47
|
Jeannerat A, Peneveyre C, Armand F, Chiappe D, Hamelin R, Scaletta C, Hirt-Burri N, de Buys Roessingh A, Raffoul W, Applegate LA, Laurent A. Hypoxic Incubation Conditions for Optimized Manufacture of Tenocyte-Based Active Pharmaceutical Ingredients of Homologous Standardized Transplant Products in Tendon Regenerative Medicine. Cells 2021; 10:cells10112872. [PMID: 34831095 PMCID: PMC8616528 DOI: 10.3390/cells10112872] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 12/13/2022] Open
Abstract
Human fetal progenitor tenocytes (hFPT) produced in defined cell bank systems have recently been characterized and qualified as potential therapeutic cell sources in tendon regenerative medicine. In view of further developing the manufacture processes of such cell-based active pharmaceutical ingredients (API), the effects of hypoxic in vitro culture expansion on key cellular characteristics or process parameters were evaluated. To this end, multiple aspects were comparatively assessed in normoxic incubation (i.e., 5% CO2 and 21% O2, standard conditions) or in hypoxic incubation (i.e., 5% CO2 and 2% O2, optimized conditions). Experimentally investigated parameters and endpoints included cellular proliferation, cellular morphology and size distribution, cell surface marker panels, cell susceptibility toward adipogenic and osteogenic induction, while relative protein expression levels were analyzed by quantitative mass spectrometry. The results outlined conserved critical cellular characteristics (i.e., cell surface marker panels, cellular phenotype under chemical induction) and modified key cellular parameters (i.e., cell size distribution, endpoint cell yields, matrix protein contents) potentially procuring tangible benefits for next-generation cell manufacturing workflows. Specific proteomic analyses further shed some light on the cellular effects of hypoxia, potentially orienting further hFPT processing for cell-based, cell-free API manufacture. Overall, this study indicated that hypoxic incubation impacts specific hFPT key properties while preserving critical quality attributes (i.e., as compared to normoxic incubation), enabling efficient manufacture of tenocyte-based APIs for homologous standardized transplant products.
Collapse
Affiliation(s)
- Annick Jeannerat
- Applied Research Department, LAM Biotechnologies SA, CH-1066 Épalinges, Switzerland; (A.J.); (C.P.)
| | - Cédric Peneveyre
- Applied Research Department, LAM Biotechnologies SA, CH-1066 Épalinges, Switzerland; (A.J.); (C.P.)
| | - Florence Armand
- Proteomics Core Facility and Technology Platform, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland; (F.A.); (D.C.); (R.H.)
| | - Diego Chiappe
- Proteomics Core Facility and Technology Platform, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland; (F.A.); (D.C.); (R.H.)
| | - Romain Hamelin
- Proteomics Core Facility and Technology Platform, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland; (F.A.); (D.C.); (R.H.)
| | - Corinne Scaletta
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Épalinges, Switzerland; (C.S.); (N.H.-B.); (L.A.A.)
| | - Nathalie Hirt-Burri
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Épalinges, Switzerland; (C.S.); (N.H.-B.); (L.A.A.)
| | - Anthony de Buys Roessingh
- Children and Adolescent Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
| | - Wassim Raffoul
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
- Plastic, Reconstructive, and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
| | - Lee Ann Applegate
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Épalinges, Switzerland; (C.S.); (N.H.-B.); (L.A.A.)
- Lausanne Burn Center, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland;
- Plastic, Reconstructive, and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland
- Center for Applied Biotechnology and Molecular Medicine, University of Zurich, CH-8057 Zurich, Switzerland
- Oxford OSCAR Suzhou Center, Oxford University, Suzhou 215123, China
| | - Alexis Laurent
- Applied Research Department, LAM Biotechnologies SA, CH-1066 Épalinges, Switzerland; (A.J.); (C.P.)
- Regenerative Therapy Unit, Lausanne University Hospital, University of Lausanne, CH-1066 Épalinges, Switzerland; (C.S.); (N.H.-B.); (L.A.A.)
- Manufacturing Department, TEC-PHARMA SA, CH-1038 Bercher, Switzerland
- Correspondence: ; Tel.: +41-21-546-42-00
| |
Collapse
|
48
|
A PDMS-Based Interdigitated Platform for Trophoblast Invasion Study Under Oxygen Stress Conditions. BIOCHIP JOURNAL 2021. [DOI: 10.1007/s13206-021-00035-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
49
|
Li L, Xu R, Jiang L, Xu EG, Wang M, Wang J, Li B, Hu M, Zhang L, Wang Y. Effects of Microplastics on Immune Responses of the Yellow Catfish Pelteobagrus fulvidraco Under Hypoxia. Front Physiol 2021; 12:753999. [PMID: 34621192 PMCID: PMC8490880 DOI: 10.3389/fphys.2021.753999] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 08/23/2021] [Indexed: 12/13/2022] Open
Abstract
Compared with marine organisms, research on microplastics (MPs) in freshwater organisms is still less although MPs have been widely found in the freshwater ecosystem. Hypoxia is a ubiquitous issue in freshwater aquaculture, and under such scenarios, the toxic effects of MPs on typical aquaculture fish need to be clarified. In this study, we studied the effects of MPs (polystyrene) on specific growth rate (SGR), hypoxia-inducible factor-1α (HIF-1α), tumor necrosis factor-α (TNF-α), interleukin-8 (IL-8), and interferon (IFN) in the yellow catfish (Pelteobagrus fulvidraco) under hypoxic conditions. After 15 days of exposure, the SGR was not affected by MPs or hypoxia. MPs significantly increased the expressions of HIF-1α and TNF-α but inhibited the expression of IFN at high concentration MPs under normoxia. However, hypoxia significantly inhibited the expression of IL-8 and TNF-α under high MP concentration and low MP concentration, respectively. In addition, MPs had significant concentration-dependent inhibitory effects on IFN under hypoxia. Surprisingly, a positive correction between HIF-1α and TNF-α was found in fish. Although hypoxia might alleviate the effects of MPs with low concentrations, the interaction of hypoxia and MPs aggravated the negative effects of MPs on immune factors at high concentration MPs. This study provided new insight into the complex effects of hypoxia and MPs on aquatic organisms, and future studies should focus on the cellular pathways of immune cells in fish. Given that MPs could induce the immune response in fish, considerations should be paid to the impacts of MPs on freshwater aquaculture, and hypoxia should be taken into consideration when evaluating the effects of MPs.
Collapse
Affiliation(s)
- Li'ang Li
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.,Huai'an Research Centre, Institute of Hydrobiology, Chinese Academy of Sciences, Huai'an, China.,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
| | - Ran Xu
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.,Huai'an Research Centre, Institute of Hydrobiology, Chinese Academy of Sciences, Huai'an, China.,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
| | - Lingfeng Jiang
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
| | - Elvis Genbo Xu
- Department of Biology, University of Southern Denmark, Odense, Denmark
| | - Man Wang
- Huai'an Research Centre, Institute of Hydrobiology, Chinese Academy of Sciences, Huai'an, China.,The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jie Wang
- Huai'an Research Centre, Institute of Hydrobiology, Chinese Academy of Sciences, Huai'an, China.,The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Bo Li
- Fisheries Research Institute, Wuhan Academy of Agricultural Sciences, Wuhan, China
| | - Menghong Hu
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
| | - Lei Zhang
- Huai'an Research Centre, Institute of Hydrobiology, Chinese Academy of Sciences, Huai'an, China.,The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Youji Wang
- International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
| |
Collapse
|
50
|
Aksakal E, Ekinci D. Effects of hypoxia and hyperoxia on growth parameters and transcription levels of growth, immune system and stress related genes in rainbow trout. Comp Biochem Physiol A Mol Integr Physiol 2021; 262:111060. [PMID: 34455084 DOI: 10.1016/j.cbpa.2021.111060] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/22/2021] [Accepted: 08/22/2021] [Indexed: 12/30/2022]
Abstract
Hypoxia and hyperoxia are disparate stressors which can have destructive influences on fish growth and physiology. It is yet to be determined if hypoxia and hyperoxia have a cumulative effect in aquatic ecosystems that affect biological parameters in fish, and to understand if this is associated with gene expression. Here we address whether growth performance and expressions of growth, immune system and stress related genes were affected by hypoxia and hyperoxia in fish. Rainbow trout was chosen as the study organism due to its excellent service as biomonitor. After an acclimatization period, fish were exposed to hypoxia (4.0 ± 0.5 ppm O2), normoxia (7.5 ± 0.5 ppm O2) and hyperoxia (12 ± 1.2 ppm O2) for 28 days. At 6 h, 12 h, 24 h, 48 h, 72 h and 28 days, samples were collected. Hypoxia and hyperoxia negatively affected weight gain (WG), specific growth rate (SGR), survival rate (SR) and feed conversion ratio (FCR). The best WG, SGR, SR and FCR values occurred in fish exposed to normoxia, whereas hypoxia was most suppressive on growth and hyperoxia showed intermediate suppression of these parameters. Gene expression analyses were performed in liver and results revealed that long term exposure caused reduced growth hormone-I (GH-I) and insulin like growth factor I-II (IGF I-II) levels in both hypoxia and hyperoxia-treated fish. Heat shock protein (HSP70) levels increased in both hypoxia and hyperoxia treatment, and both exposures caused elevation of leptin (LEP) expression in long-term exposure. Overall data indicate that both hypoxia and hyperoxia cause stress in rainbow trout and negatively affects growth parameters.
Collapse
Affiliation(s)
- Ercüment Aksakal
- Akdeniz University, Agriculture Faculty, Department of Agricultural Biotechnology, Division of Animal Biotechnology, 07058 Antalya, Turkey.
| | - Deniz Ekinci
- Faculty of Agriculture, Department of Agricultural Biotechnology, Ondokuz Mayıs University, Samsun, Turkey
| |
Collapse
|