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Dang X, Chen X, Liang Z, Dai Z, Ding W, Song J, Fu J. P4HA2 promotes tumor progression and is transcriptionally regulated by SP1 in colorectal cancer. Cancer Biol Ther 2024; 25:2361594. [PMID: 38857058 PMCID: PMC11168210 DOI: 10.1080/15384047.2024.2361594] [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: 02/29/2024] [Accepted: 05/24/2024] [Indexed: 06/11/2024] Open
Abstract
P4HA2 has been implicated in various malignant tumors; however, its expression and functional role in colorectal cancer (CRC) remain poorly elucidated. This study aims to investigate the involvement of P4HA2 in CRC metastasis and progression, uncovering the underlying mechanisms. In colorectal cancer (CRC), P4HA2 exhibited overexpression, and elevated levels of P4HA2 expression were associated with an unfavorable prognosis. Functional assays demonstrated P4HA2's regulation of cell proliferation, and epithelial-mesenchymal transition (EMT) both in vitro and in vivo. Additionally, the AGO1 expression was correlated with P4HA2, and depletion of AGO1 reversed the proliferation and EMT function induced by P4HA2. Chromatin immunoprecipitation (ChIP) and luciferase assays suggested that the transcription factor SP1 binds to the promoter sequence of P4HA2, activating its expression in CRC. This study unveiled SP1 as a transcriptional regulator of P4HA2 in CRC and AGO1 is a probable target of P4HA2. In conclusion, P4HA2 emerges as a potential prognostic biomarker and promising therapeutic target in colorectal cancer.
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Affiliation(s)
- Xuening Dang
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Shanghai Colorectal Cancer Research Center, Shanghai, China
- Department of Cardiovascular Surgery, Shanghai Chest Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiaojian Chen
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - Zhonglin Liang
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - Zhujiang Dai
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - Wenjun Ding
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - Jinglue Song
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - Jihong Fu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Shanghai Colorectal Cancer Research Center, Shanghai, China
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2
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He J, Yu Y, Liu W, Li Z, Qi Z, Weng S, Guo C, He J. Molecular mechanism of infectious spleen and kidney necrosis virus in manipulating the hypoxia-inducible factor pathway to augment virus replication. Virulence 2024; 15:2349027. [PMID: 38680083 PMCID: PMC11085990 DOI: 10.1080/21505594.2024.2349027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 03/28/2024] [Indexed: 05/01/2024] Open
Abstract
Infectious spleen and kidney necrosis virus (ISKNV), a member of the genus Megalocytivirus in the family Iridoviridae, can infect over 50 fish species and cause significant economic losses in Asia. Our previous study showed that hypoxia triggers the hypoxia-inducible factor pathway (HIF-pathway), leading to increased replication of ISKNV through promoting the upregulation of viral hypoxic response genes like orf077r. This study delved into the molecular mechanism of how ISKNV manipulates the HIF-pathway to enhance its replication. In vitro and in vivo experiments confirmed that ISKNV infection activated the HIF-pathway, which in turn promoted ISKNV replication. These findings suggest that ISKNV actively manipulates the HIF-pathway. Co-immunoprecipitation experiments revealed that the ISKNV-encoded protein VP077R interacts with the Von Hippel-Lindau (VHL) protein at the HIF-binding region, competitively inhibiting the interaction of HIF-1α with VHL. This prevents HIF degradation and activates the HIF-pathway. Furthermore, VP077R interacts with factor-inhibiting HIF (FIH), recruiting FIH and S-phase kinase-associated protein 1 (Skp1) to form an FIH - VP077R - Skp1 complex. This complex promotes FIH protein degradation via ubiquitination, further activating the HIF-pathway. These findings indicated that ISKNV takes over the HIF-pathway by releasing two "brakes" on this pathway (VHL and FIH) via VP077R, facilitating virus replication. We speculate that hypoxia initiates a positive feedback loop between ISKNV VP077R and the HIF pathway, leading to the outbreak of ISKNV disease. This work offers valuable insights into the complex interactions between the environment, host, and virus.
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Affiliation(s)
- Jian He
- State Key Laboratory for Biocontrol/Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Guangdong Provincial Observation and Research Station for Marine Ranching of the Lingdingyang Bay, School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China
| | - Yang Yu
- State Key Laboratory for Biocontrol/Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Guangdong Provincial Observation and Research Station for Marine Ranching of the Lingdingyang Bay, School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China
| | - Wenhui Liu
- State Key Laboratory for Biocontrol/Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Guangdong Provincial Observation and Research Station for Marine Ranching of the Lingdingyang Bay, School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China
| | - Zhimin Li
- State Key Laboratory for Biocontrol/Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Guangdong Provincial Observation and Research Station for Marine Ranching of the Lingdingyang Bay, School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China
| | - Zhang Qi
- State Key Laboratory for Biocontrol/Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Guangdong Provincial Observation and Research Station for Marine Ranching of the Lingdingyang Bay, School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China
| | - Shaoping Weng
- Guangdong Province Key Laboratory of Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China
| | - Changjun Guo
- State Key Laboratory for Biocontrol/Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Guangdong Provincial Observation and Research Station for Marine Ranching of the Lingdingyang Bay, School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Province Key Laboratory of Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China
| | - Jianguo He
- State Key Laboratory for Biocontrol/Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Guangdong Provincial Observation and Research Station for Marine Ranching of the Lingdingyang Bay, School of Marine Sciences, Sun Yat-sen University, Guangzhou, PR China
- Guangdong Province Key Laboratory of Aquatic Economic Animals, Sun Yat-sen University, Guangzhou, PR China
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3
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Burgess ER, Praditi C, Phillips E, Vissers MCM, Robinson BA, Dachs GU, Wiggins GAR. Role of Sodium-Dependent Vitamin C Transporter-2 and Ascorbate in Regulating the Hypoxic Pathway in Cultured Glioblastoma Cells. J Cell Biochem 2024:e30658. [PMID: 39382087 DOI: 10.1002/jcb.30658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 07/21/2024] [Accepted: 09/11/2024] [Indexed: 10/10/2024]
Abstract
The most common and aggressive brain cancer, glioblastoma, is characterized by hypoxia and poor survival. The pro-tumour transcription factor, hypoxia-inducible factor (HIF), is regulated via HIF-hydroxylases that require ascorbate as cofactor. Decreased HIF-hydroxylase activity triggers the hypoxic pathway driving cancer progression. Tissue ascorbate accumulates via the sodium-dependent vitamin C transporter-2 (SVCT2). We hypothesize that glioblastoma cells rely on SVCT2 for ascorbate accumulation, and that knockout of this transporter would disrupt the regulation of the hypoxic pathway by ascorbate. Ascorbate uptake was measured in glioblastoma cell lines (U87MG, U251MG, T98G) by high-performance liquid chromatography. CRISPR/Cas9 was used to knockout SVCT2. Cells were treated with cobalt chloride, desferrioxamine or 5% oxygen, with/without ascorbate, and key hypoxic pathway proteins were measured using Western blot analysis. Ascorbate uptake was cell line dependent, ranging from 1.7 to 11.0 nmol/106 cells. SVCT2-knockout cells accumulated 90%-95% less intracellular ascorbate than parental cells. The hypoxic pathway was induced by all three stimuli, and ascorbate reduced this induction. In the SVCT2-knockout cells, ascorbate had limited effect on the hypoxic pathway. This study verifies that intracellular ascorbate is required to suppress the hypoxic pathway. As patient survival is related to an activated hypoxic pathway, increasing intra-tumoral ascorbate may be of clinical interest.
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Affiliation(s)
- Eleanor R Burgess
- Mackenzie Cancer Research Group, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch, New Zealand
- Department of Immunobiochemistry, Mannheim Institute for Innate Immunology (MI3), Heidelberg University, Medical Faculty Mannheim, Mannheim, Germany
| | - Citra Praditi
- Mackenzie Cancer Research Group, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch, New Zealand
- Mātai Hāora, Centre for Redox Biology and Medicine, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch, New Zealand
| | - Elisabeth Phillips
- Mackenzie Cancer Research Group, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch, New Zealand
| | - Margreet C M Vissers
- Mātai Hāora, Centre for Redox Biology and Medicine, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch, New Zealand
| | - Bridget A Robinson
- Mackenzie Cancer Research Group, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch, New Zealand
- Canterbury Regional Cancer and Haematology Service, Te Whatu Ora, Waitaha/Canterbury, Christchurch, New Zealand
| | - Gabi U Dachs
- Mackenzie Cancer Research Group, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch, New Zealand
| | - George A R Wiggins
- Mackenzie Cancer Research Group, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch, New Zealand
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Burzi IS, Parchi PD, Barachini S, Pardini E, Sardo Infirri G, Montali M, Petrini I. Hypoxia Promotes the Stemness of Mesangiogenic Progenitor Cells and Prevents Osteogenic but not Angiogenic Differentiation. Stem Cell Rev Rep 2024; 20:1830-1842. [PMID: 38914791 PMCID: PMC11457687 DOI: 10.1007/s12015-024-10749-9] [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] [Accepted: 06/13/2024] [Indexed: 06/26/2024]
Abstract
The stem cell niche in the bone marrow is a hypoxic environment, where the low oxygen tension preserves the pluripotency of stem cells. We have identified mesangiogenic progenitor cells (MPC) exhibiting angiogenic and mesenchymal differentiation capabilities in vitro. The effect of hypoxia on MPC has not been previously explored. In this study, MPCs were isolated from volunteers' bone marrow and cultured under both normoxic and hypoxic conditions (3% O2). MPCs maintained their characteristic morphology and surface marker expression (CD18 + CD31 + CD90-CD73-) under hypoxia. However, hypoxic conditions led to reduced MPC proliferation in primary cultures and hindered their differentiation into mesenchymal stem cells (MSCs) upon exposure to differentiative medium. First passage MSCs derived from MPC appeared unaffected by hypoxia, exhibiting no discernible differences in proliferative potential or cell cycle. However, hypoxia impeded the subsequent osteogenic differentiation of MSCs, as evidenced by decreased hydroxyapatite deposition. Conversely, hypoxia did not impact the angiogenic differentiation potential of MPCs, as demonstrated by spheroid-based assays revealing comparable angiogenic sprouting and tube-like formation capabilities under both hypoxic and normoxic conditions. These findings indicate that hypoxia preserves the stemness phenotype of MPCs, inhibits their differentiation into MSCs, and hampers their osteogenic maturation while leaving their angiogenic potential unaffected. Our study sheds light on the intricate effects of hypoxia on bone marrow-derived MPCs and their differentiation pathways.
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Affiliation(s)
- Irene Sofia Burzi
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Savi 2, 56125, Pisa, Italy
| | - Paolo Domenico Parchi
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Savi 2, 56125, Pisa, Italy
| | - Serena Barachini
- Department of Clinical and Experimental Medicine, University of Pisa, Via Roma 67, 56125, Pisa, Italy
| | - Eleonora Pardini
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Savi 2, 56125, Pisa, Italy
| | - Gisella Sardo Infirri
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Savi 2, 56125, Pisa, Italy
| | - Marina Montali
- Department of Clinical and Experimental Medicine, University of Pisa, Via Roma 67, 56125, Pisa, Italy
| | - Iacopo Petrini
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Savi 2, 56125, Pisa, Italy.
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Jan-ngam V, Boontha S, Tubsuwan A, Wongpalee SP, Fanhchaksai K, Tantiworawit A, Charoenkwan P, Khamphikham P. Genetic modifications of EGLN1 reactivate HbF production in β 0-thalassemia/HbE. Heliyon 2024; 10:e38020. [PMID: 39381253 PMCID: PMC11459010 DOI: 10.1016/j.heliyon.2024.e38020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2024] [Revised: 09/13/2024] [Accepted: 09/16/2024] [Indexed: 10/10/2024] Open
Abstract
Reactivation of fetal hemoglobin (HbF, α2γ2) potentially alleviates clinical presentation in β-thalassemia. Prolyl hydroxylase domain enzymes (PHDs) play roles in the canonical oxygen-sensing pathway and maintain the stability of cellular hypoxia-inducible factor α (HIF-α) in response to low oxygen levels or hypoxia. Pharmacological inhibition of PHDs has been shown to increase HbF production in erythroid progenitors derived from healthy donors. Here, we demonstrated the relationship between PHD2, the main PHD isoform, and clinical phenotypes in β0-thalassemia/HbE disease. Although the targeted sequencing annotated several common variants within EGLN1, the gene encoding PHD2, none of these variants were located in the functional domains of PHD2 and were irrelevant to the clinical phenotypes. CRISPR-mediated EGLN1 modifications at the functional regions; however, led to significantly reduce PHD2 expression and increase HbF expression levels in severe β-thalassemia erythroblasts. Moreover, these beneficial phenotypes were independent to the two well-known HbF regulators including BCL11A and GATA1. Our findings introduce an additional mechanism for HbF regulation in β-thalassemia and propose that targeting the canonical oxygen-sensing pathway, particularly PHD2 functional domains, might offer a promising therapeutic strategy to β-thalassemia diseases.
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Affiliation(s)
- Varit Jan-ngam
- Master of Science Program in Medical Technology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Siriraj Boontha
- Bachelor of Science Program in Medical Technology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Alisa Tubsuwan
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand
| | - Somsakul Pop Wongpalee
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Kanda Fanhchaksai
- Division of Hematology and Oncology, Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Thalassemia and Hematology Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Adisak Tantiworawit
- Division of Hematology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Pimlak Charoenkwan
- Division of Hematology and Oncology, Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Thalassemia and Hematology Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Pinyaphat Khamphikham
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
- Hematology and Health Technology Research Center, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
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6
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Wu Y, Xu R, Wang J, Luo Z. Precision molecular insights for prostate cancer prognosis: tumor immune microenvironment and cell death analysis of senescence-related genes by machine learning and single-cell analysis. Discov Oncol 2024; 15:487. [PMID: 39331250 PMCID: PMC11436555 DOI: 10.1007/s12672-024-01277-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2024] [Accepted: 08/26/2024] [Indexed: 09/28/2024] Open
Abstract
BACKGROUND Prostate cancer (PCa) is a prevalent malignancy among men, primarily originating from the prostate epithelium. It ranks first in global cancer incidence and second in mortality rates, with a rising trend in China. PCa's subtle initial symptoms, such as urinary issues, necessitate diagnostic measures like digital rectal examination, prostate-specific antigen (PSA) testing, and tissue biopsy. Advanced PCa management typically involves a multifaceted approach encompassing surgery, radiation, chemotherapy, and hormonal therapy. The involvement of aging genes in PCa development and progression, particularly through the mTOR pathway, has garnered increasing attention. METHODS This study aimed to explore the association between aging genes and biochemical PCa recurrence and construct predictive models. Utilizing public gene expression datasets (GSE70768, GSE116918, and TCGA), we conducted extensive analyses, including Cox regression, functional enrichment, immune cell infiltration estimation, and drug sensitivity assessments. The constructed risk score model, based on aging-related genes (ARGs), demonstrated superior predictive capability for PCa prognosis compared to conventional clinical features. High-risk genes positively correlated with risk, while low-risk genes displayed a negative correlation. RESULTS An ARGs-based risk score model was developed and validated for predicting prognosis in prostate adenocarcinoma (PRAD) patients. LASSO regression analysis and cross-validation plots were employed to select ARGs with prognostic significance. The risk score outperformed traditional clinicopathological features in predicting PRAD prognosis, as evidenced by its high AUC (0.787). The model demonstrated good sensitivity and specificity, with AUC values of 0.67, 0.675, 0.696, and 0.696 at 1, 3, 5, and 8 years, respectively, in the GEO cohort. Similar AUC values were observed in the TCGA cohort at 1, 3, and 5 years (0.67, 0.659, 0.667, and 0.743). The model included 12 genes, with high-risk genes positively correlated with risk and low-risk genes negatively correlated. CONCLUSIONS This study presents a robust ARGs-based risk score model for predicting biochemical recurrence in PCa patients, highlighting the potential significance of aging genes in PCa prognosis and offering enhanced predictive accuracy compared to traditional clinical parameters. These findings open new avenues for research on PCa recurrence prediction and therapeutic strategies.
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Affiliation(s)
- Yuni Wu
- Department of Oncology, Chongqing General Hospital, Chongqing University, Chongqing, 401147, China
| | - Ran Xu
- School of Clinical Medicine, North Sichuan Medical College, Nanchong, 637100, China
| | - Jing Wang
- Department of Oncology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, China.
| | - Zhibin Luo
- Department of Oncology, Chongqing General Hospital, Chongqing University, Chongqing, 401147, China.
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7
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Rose TL, Kim WY. Renal Cell Carcinoma: A Review. JAMA 2024; 332:1001-1010. [PMID: 39196544 DOI: 10.1001/jama.2024.12848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Importance Renal cell carcinoma (RCC) is a common malignancy, with an estimated 434 840 incident cases worldwide in 2022. In the US, it is the sixth most common cancer among males and ninth among females. Observations Clear cell RCC is the most common histologic subtype (75%-80% of cases) and is characterized by inactivation of the von Hippel Lindau (VHL) tumor suppressor gene. Many patients (37%-61%) are diagnosed with RCC incidentally on an abdominal imaging study such as ultrasound or computed tomographic scan, and 70% of patients have stage I RCC at diagnosis. Although its incidence has increased approximately 1% per year from 2015 through 2019, the mortality rate of RCC has declined about 2% per year in the US from 2016 through 2020. Patients with a solid renal mass or complex cystic renal mass should be referred to urology. Treatment options for RCC confined to the kidney include surgical resection with partial or radical nephrectomy, ablative techniques (eg, cryoablation, radiofrequency ablation, radiation), or active surveillance for some patients (especially those with renal masses <2 cm). For patients with renal masses less than 4 cm in size (48% of patients), partial nephrectomy can result in a 5-year cancer-specific survival of more than 94%. For advanced or metastatic RCC, combinations of immune checkpoint inhibitors or the combination of immune checkpoint inhibitors with tyrosine kinase inhibitors are associated with tumor response of 42% to 71%, with a median overall survival of 46 to 56 months. Conclusions and Relevance RCC is a common malignancy that is often diagnosed incidentally on an abdominal imaging study. Seventy percent of patients are diagnosed with stage I RCC and 11% of patients with stage IV. First-line treatments for early-stage RCC are partial or radical nephrectomy, which can result in 5-year cancer-specific survival of more than 94%, ablative techniques, or active surveillance. New treatment options for patients with metastatic RCC include immune checkpoint inhibitors and tyrosine kinase inhibitors.
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Affiliation(s)
- Tracy L Rose
- Division of Oncology, Department of Medicine, University of North Carolina at Chapel Hill
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill
| | - William Y Kim
- Division of Oncology, Department of Medicine, University of North Carolina at Chapel Hill
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill
- Department of Genetics, University of North Carolina at Chapel Hill
- Department of Pharmacology, University of North Carolina at Chapel Hill
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8
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Yu Z, Ran G, Chai J, Zhang EE. A nature-inspired HIF stabilizer derived from a highland-adaptation insertion of plateau pika Epas1 protein. Cell Rep 2024; 43:114727. [PMID: 39269902 DOI: 10.1016/j.celrep.2024.114727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 08/06/2024] [Accepted: 08/22/2024] [Indexed: 09/15/2024] Open
Abstract
Hypoxia-inducible factors (HIFs) play pivotal roles in numerous diseases and high-altitude adaptation, and HIF stabilizers have emerged as valuable therapeutic tools. In our prior investigation, we identified a highland-adaptation 24-amino-acid insertion within the Epas1 protein. This insertion enhances the protein stability of Epas1, and mice engineered with this insertion display enhanced resilience to hypoxic conditions. In the current study, we delved into the biochemical mechanisms underlying the protein-stabilizing effects of this insertion. Our findings unveiled that the last 11 amino acids within this insertion adopt a helical conformation and interact with the α-domain of the von Hippel-Lindau tumor suppressor protein (pVHL), thereby disrupting the Eloc-pVHL interaction and impeding the ubiquitination of Epas1. Utilizing a synthesized peptide, E14-24, we demonstrated its favorable membrane permeability and ability to stabilize endogenous HIF-α proteins, inducing the expression of hypoxia-responsive element (HRE) genes. Furthermore, the administration of E14-24 to mice subjected to hypoxic conditions mitigated body weight loss, suggesting its potential to enhance hypoxia adaptation.
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Affiliation(s)
- Ziqing Yu
- Graduate School of Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100006, China; National Institute of Biological Sciences, Beijing 102206, China.
| | - Guangdi Ran
- National Institute of Biological Sciences, Beijing 102206, China; Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing 102206, China
| | - Juan Chai
- National Institute of Biological Sciences, Beijing 102206, China
| | - Eric Erquan Zhang
- National Institute of Biological Sciences, Beijing 102206, China; Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing 102206, China.
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9
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Peters K, Staehlke S, Rebl H, Jonitz-Heincke A, Hahn O. Impact of Metal Ions on Cellular Functions: A Focus on Mesenchymal Stem/Stromal Cell Differentiation. Int J Mol Sci 2024; 25:10127. [PMID: 39337612 PMCID: PMC11432215 DOI: 10.3390/ijms251810127] [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: 08/02/2024] [Revised: 09/06/2024] [Accepted: 09/18/2024] [Indexed: 09/30/2024] Open
Abstract
Metals play a crucial role in the human body, especially as ions in metalloproteins. Essential metals, such as calcium, iron, and zinc are crucial for various physiological functions, but their interactions within biological networks are complex and not fully understood. Mesenchymal stem/stromal cells (MSCs) are essential for tissue regeneration due to their ability to differentiate into various cell types. This review article addresses the effects of physiological and unphysiological, but not directly toxic, metal ion concentrations, particularly concerning MSCs. Overloading or unbalancing of metal ion concentrations can significantly impair the function and differentiation capacity of MSCs. In addition, excessive or unbalanced metal ion concentrations can lead to oxidative stress, which can affect viability or inflammation. Data on the effects of metal ions on MSC differentiation are limited and often contradictory. Future research should, therefore, aim to clarify the mechanisms by which metal ions affect MSC differentiation, focusing on aspects such as metal ion interactions, ion concentrations, exposure duration, and other environmental conditions. Understanding these interactions could ultimately improve the design of biomaterials and implants to promote MSC-mediated tissue regeneration. It could also lead to the development of innovative therapeutic strategies in regenerative medicine.
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Affiliation(s)
- Kirsten Peters
- Institute of Cell Biology, Rostock University Medical Center Rostock, Schillingallee 69, 18057 Rostock, Germany; (S.S.); (H.R.); (O.H.)
| | - Susanne Staehlke
- Institute of Cell Biology, Rostock University Medical Center Rostock, Schillingallee 69, 18057 Rostock, Germany; (S.S.); (H.R.); (O.H.)
| | - Henrike Rebl
- Institute of Cell Biology, Rostock University Medical Center Rostock, Schillingallee 69, 18057 Rostock, Germany; (S.S.); (H.R.); (O.H.)
| | - Anika Jonitz-Heincke
- Research Laboratory for Biomechanics and Implant Technology, Department of Orthopaedics, Rostock University Medical Center, Doberaner Strasse 142, 18057 Rostock, Germany;
| | - Olga Hahn
- Institute of Cell Biology, Rostock University Medical Center Rostock, Schillingallee 69, 18057 Rostock, Germany; (S.S.); (H.R.); (O.H.)
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10
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Islam MS, Jesmin. Exploring the Correlation Between Hypoxia, HIF1A Variants, and Breast Cancer in Different Ethnicities, and Bangladeshi Women: Through ELISA and Integrative Multi-Omics Analysis. Biomark Insights 2024; 19:11772719241278176. [PMID: 39314258 PMCID: PMC11418304 DOI: 10.1177/11772719241278176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 08/09/2024] [Indexed: 09/25/2024] Open
Abstract
Background Hypoxia, a condition where there is a lack of oxygen, is known to play a role in cancer progression. Objective This study investigates the correlation between HIF1A gene-altered expression and hypoxia in Bangladeshi breast cancer (BC) cases and TCGA_BC datasets. Design This case-control study compares BC cases to healthy controls to understand the relationship between gene changes and cancer. Method This study used advanced analysis methods to examine the transcriptional landscape of BC, and quantitatively assessed its correlation using integrated multi-omics analysis. Results In Bangladeshi BC cases, the T allele of HIF1A rs1154946 correlates notably (P-value < .001) with BC incidence. ELISA results confirmed a significant association (P-value < .005) between elevated HIF1A expression and BC-related hypoxia. Bioinformatics eQTL analysis validated the correlation between increased HIF1A expression and rs11549465 T allele (P-value < .01). Structural analyses suggested that rs11549465 (P582S) mutation may decrease protein stability (ΔΔG-value: -1.24 kcal/mole), potentially affecting HIF1A function. HIF1A enrichment analysis in BC underscores strong associations with oxygen levels, hypoxia, metabolic processes, apoptosis, and programed cell death (P-value < .001). Transcriptomic data demonstrated a robust correlation (P-value < .0001) between HIF1A expression and copy-number alterations, mutations, and abnormal methylation. Altered HIF1A expression showed strong negative correlations (P-value < .00001) with methylation and the expression of the ER (ESR1), in Whites. Survival analysis revealed marked differences in overall survival linked to high and low HIF1A expression (P-value < .00001). Furthermore, HIF1A expression significantly correlated (P-value < .000001) with hypoxia, TMB, MSI, and immune infiltration by CD8+ T cells, neutrophils, dendritic, and macrophages, providing deeper insights into the BC microenvironment. Conclusion Thus, the HIF1A gene could serve as a promising biomarker for breast cancer progression, control, and survival across ethnicities, emphasizing its role in disease development and regulation.
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Affiliation(s)
- Md. Shihabul Islam
- Department of Genetic Engineering & Biotechnology, University of Rajshahi, Rajshahi, Bangladesh
| | - Jesmin
- Department of Genetic Engineering & Biotechnology, University of Dhaka, Dhaka, Bangladesh
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11
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Bonardi A, Nocentini A, de Luca V, Capasso C, Elkaeed EB, Eldehna WM, Supuran CT. Hydrogen Sulfide-Releasing Carbonic Anhydrase Inhibitors Effectively Suppress Cancer Cell Growth. Int J Mol Sci 2024; 25:10006. [PMID: 39337494 PMCID: PMC11432087 DOI: 10.3390/ijms251810006] [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: 08/05/2024] [Revised: 09/13/2024] [Accepted: 09/15/2024] [Indexed: 09/30/2024] Open
Abstract
This study proposes a novel therapeutic strategy for cancer management by combining the antitumor effects of hydrogen sulfide (H2S) and inhibition of carbonic anhydrases (CAs; EC 4.2.1.1), specifically isoforms IV, IX, and XII. H2S has demonstrated cytotoxicity against various cancers at high concentrations. The inhibition of tumor-associated CAs leads to lethal intracellular alkalinization and acidification of the extracellular tumor microenvironment and restores tumor responsiveness to the immune system, chemotherapy, and radiotherapy. The study proposes H2S donor-CA inhibitor (CAI) hybrids for tumor management. These compounds effectively inhibit the target CAs, release H2S consistently, and exhibit potent antitumor effects against MDA-MB-231, HCT-116, and A549 cancer cell lines. Notably, some compounds display high cytotoxicity across all investigated cell lines. Derivative 30 shows a 2-fold increase in cytotoxicity (0.93 ± 0.02 µM) under chemically induced hypoxia in HCT-116 cells. These compounds also disturb the cell cycle, leading to a reduction in cell populations in G0/G1 and S phases, with a notable increase in G2/M and Sub-G1. This disruption is correlated with induced apoptosis, with fold increases of 37.2, 24.5, and 32.9 against HCT-116 cells and 14.2, 13.1, and 19.9 against A549 cells compared to untreated cells. These findings suggest the potential of H2S releaser-CAI hybrids as effective and versatile tools in cancer treatment.
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Affiliation(s)
- Alessandro Bonardi
- Department of NEUROFARBA, Pharmaceutical and Nutraceutical Section, University of Firenze, Via Ugo Schiff 6, Sesto Fiorentino, 50019 Florence, Italy
| | - Alessio Nocentini
- Department of NEUROFARBA, Pharmaceutical and Nutraceutical Section, University of Firenze, Via Ugo Schiff 6, Sesto Fiorentino, 50019 Florence, Italy
| | - Viviana de Luca
- Department of Biology, Agriculture and Food Sciences, National Research Council (CNR), Institute of Biosciences and Bioresources, 80131 Naples, Italy
| | - Clemente Capasso
- Department of Biology, Agriculture and Food Sciences, National Research Council (CNR), Institute of Biosciences and Bioresources, 80131 Naples, Italy
| | - Eslam B Elkaeed
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo 11884, Egypt
| | - Wagdy M Eldehna
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Pharos University in Alexandria, Canal El Mahmoudia St., Alexandria 21648, Egypt
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Claudiu T Supuran
- Department of NEUROFARBA, Pharmaceutical and Nutraceutical Section, University of Firenze, Via Ugo Schiff 6, Sesto Fiorentino, 50019 Florence, Italy
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12
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Eisenreich W, Leberfing J, Rudel T, Heesemann J, Goebel W. Interactions of SARS-CoV-2 with Human Target Cells-A Metabolic View. Int J Mol Sci 2024; 25:9977. [PMID: 39337465 PMCID: PMC11432161 DOI: 10.3390/ijms25189977] [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: 08/15/2024] [Revised: 09/13/2024] [Accepted: 09/13/2024] [Indexed: 09/30/2024] Open
Abstract
Viruses are obligate intracellular parasites, and they exploit the cellular pathways and resources of their respective host cells to survive and successfully multiply. The strategies of viruses concerning how to take advantage of the metabolic capabilities of host cells for their own replication can vary considerably. The most common metabolic alterations triggered by viruses affect the central carbon metabolism of infected host cells, in particular glycolysis, the pentose phosphate pathway, and the tricarboxylic acid cycle. The upregulation of these processes is aimed to increase the supply of nucleotides, amino acids, and lipids since these metabolic products are crucial for efficient viral proliferation. In detail, however, this manipulation may affect multiple sites and regulatory mechanisms of host-cell metabolism, depending not only on the specific viruses but also on the type of infected host cells. In this review, we report metabolic situations and reprogramming in different human host cells, tissues, and organs that are favorable for acute and persistent SARS-CoV-2 infection. This knowledge may be fundamental for the development of host-directed therapies.
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Affiliation(s)
- Wolfgang Eisenreich
- Structural Membrane Biochemistry, Bavarian NMR Center (BNMRZ), Department of Bioscience, TUM School of Natural Sciences, Technical University of Munich, Lichtenbergstr. 4, 85747 Garching, Germany;
| | - Julian Leberfing
- Structural Membrane Biochemistry, Bavarian NMR Center (BNMRZ), Department of Bioscience, TUM School of Natural Sciences, Technical University of Munich, Lichtenbergstr. 4, 85747 Garching, Germany;
| | - Thomas Rudel
- Chair of Microbiology, Biocenter, University of Würzburg, 97074 Würzburg, Germany;
| | - Jürgen Heesemann
- Max von Pettenkofer Institute, Ludwig Maximilian University of Munich, 80336 München, Germany; (J.H.); (W.G.)
| | - Werner Goebel
- Max von Pettenkofer Institute, Ludwig Maximilian University of Munich, 80336 München, Germany; (J.H.); (W.G.)
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13
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Yan X, Chen C, Ren Y, Su T, Chen H, Yu D, Huang Y, Chao M, Wu G, Jiang G, Gao F. A dual-pathway pyroptosis inducer based on Au-Cu 2-xSe@ZIF-8 enhances tumor immunotherapy by disrupting the zinc ion homeostasis. Acta Biomater 2024:S1742-7061(24)00531-2. [PMID: 39278301 DOI: 10.1016/j.actbio.2024.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 09/08/2024] [Accepted: 09/10/2024] [Indexed: 09/18/2024]
Abstract
The regulation of intracellular ionic homeostasis to trigger antigen-specific immune responses has attracted extensive interest in tumor therapy. In this study, we developed a dual-pathway nanoreactor, Au-Cu2-xSe@ZIF-8@P18 NPs (ACS-Z-P NPs), which targets danger-associated molecular patterns (DAMPs) and releases Zn2+ and reactive oxygen species (ROS) within the tumor microenvironment (TME). Zn2+ released from the metal-organic frameworks (MOFs) was deposited in the cytoplasm, leading to aberrant transcription levels of intracellular zinc-regulated proteins and DNA damage, thereby inducing pyroptosis and immunogenic cell death (ICD) dependent on caspase1/gasdermin D (GSDMD) pathway. Furthermore, upon laser irradiation, ACS-Z-P NPs could break through the limitations of inherent defects of immunosuppression in TME, enhance ROS generation through a Fenton-like reaction cascade, which subsequently triggered the activation of inflammatory vesicles and the release of damage-associated molecular patterns (DAMPs). This cascade effect led to the amplification of pyroptosis and immunogenic cell death (ICD), thereby remodeling the immunosuppressed TME. Consequently, this process improved dendritic cell (DC) antigen presentation and augmented anti-tumor T-cell responses, effectively initiating antigen-specific immune responses and further enhancing pyroptosis and ICD. This study explores the therapeutic properties of these mechanisms in detail. STATEMENT OF SIGNIFICANCE: The synthesized Au-Cu2-xSe@ZIF-8@P18 nanoparticles (ACS-Z-Ps) can effectively enhance the body's immune response by regulating zinc ion levels within cells. This regulation leads to abnormal levels of zinc-regulated protein transcription and DNA damage, which induces cellular pyroptosis. As a result, antigen presentation to dendritic cells (DCs) is improved, and anti-tumor T-cell responses are enhanced. The ACS-Z-P NPs overcome the limitations of ROS deficiency and immunosuppression in the tumor microenvironment by using H2O2 in the tumor microenvironment through a Fenton-like reaction. This leads to an increased production of ROS and O2, remodeling of the immunosuppressed tumor microenvironment, and enhanced induction of cell pyroptosis and immunogenic cell death. ACS-Z-P NPs targeted B16 cells using the photosensitizer P18 in combination with PDT treatment. This approach significantly inhibited the proliferation of B16 cells and effectively inhibited tumor growth.
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Affiliation(s)
- Xiang Yan
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Department of Dermatology and Venereology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China; Department of Dermatology, Shangqiu People's Hospital, Shangqiu, Henan 221004, China
| | - Cheng Chen
- Department of Dermatology, The Affiliated Huaian No 1 People's Hospital of Nanjing Medical University, Huaian, Jiangsu 223300, China
| | - Yiping Ren
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Department of Dermatology and Venereology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
| | - Tianyu Su
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Han Chen
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Dehong Yu
- The Affiliated Pizhou Hospital of Xuzhou Medical University, Pizhou, Jiangsu 221399, China
| | - Yuqi Huang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Minghao Chao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Guoquan Wu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Guan Jiang
- Department of Dermatology and Venereology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China.
| | - Fenglei Gao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
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14
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Van Kerkhove O, Verfaillie S, Maes B, Cuppens K. The Adenosinergic Pathway in Non-Small Cell Lung Cancer. Cancers (Basel) 2024; 16:3142. [PMID: 39335114 PMCID: PMC11430550 DOI: 10.3390/cancers16183142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Revised: 09/02/2024] [Accepted: 09/08/2024] [Indexed: 09/30/2024] Open
Abstract
Immune checkpoint inhibitors (ICIs) targeting PD-(L)1 and CTLA-4 have revolutionized the systemic treatment of non-small cell lung cancer (NSCLC), achieving impressive results. However, long-term clinical benefits are only seen in a minority of patients. Extensive research is being conducted on novel potential immune checkpoints and the mechanisms underlying ICI resistance. The tumor microenvironment (TME) plays a critical role in modulating the immune response and influencing the efficacy of ICIs. The adenosinergic pathway and extracellular adenosine (eADO) are potential targets to improve the response to ICIs in NSCLC patients. First, this review delves into the adenosinergic pathway and the impact of adenosine within the TME. Second, we provide an overview of relevant preclinical and clinical data on molecules targeting this pathway, particularly focusing on NSCLC.
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Affiliation(s)
- Olivier Van Kerkhove
- Department of Pulmonology and Thoracic Oncology and Jessa & Science, Jessa Hospital, Salvatorstraat, 3500 Hasselt, Belgium
| | - Saartje Verfaillie
- Department of Pulmonology and Thoracic Oncology and Jessa & Science, Jessa Hospital, Salvatorstraat, 3500 Hasselt, Belgium
| | - Brigitte Maes
- Laboratory for Molecular Diagnostics, Department of Laboratory Medicine, Jessa Hospital, Salvatorstraat, 3500 Hasselt, Belgium
- Faculty of Medicine and Life Sciences-LCRC, Hasselt University, 3590 Diepenbeek, Belgium
| | - Kristof Cuppens
- Department of Pulmonology and Thoracic Oncology and Jessa & Science, Jessa Hospital, Salvatorstraat, 3500 Hasselt, Belgium
- Faculty of Medicine and Life Sciences-LCRC, Hasselt University, 3590 Diepenbeek, Belgium
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15
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Wang X, He J, Sun M, Wang S, Qu J, Shi H, Rao B. High-dose vitamin C as a metabolic treatment of cancer: a new dimension in the era of adjuvant and intensive therapy. Clin Transl Oncol 2024:10.1007/s12094-024-03553-x. [PMID: 39259387 DOI: 10.1007/s12094-024-03553-x] [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: 03/22/2024] [Accepted: 06/04/2024] [Indexed: 09/13/2024]
Abstract
The anti-cancer mechanism of High-dose Vitamin C (HDVC) is mainly to participate in the Fenton reaction, hydroxylation reaction, and epigenetic modification, which leads to the energy crisis, metabolic collapse, and severe peroxidation stress that results in the proliferation inhibition or death of cancer cells. However, the mainstream view is that HDVC does not significantly improve cancer treatment outcomes. In clinical work and scientific research, we found that some drugs or therapies can significantly improve the anti-cancer effects of HDVC, such as PD-1 inhibitors that can increase the anti-cancer effects of cancerous HDVC by nearly three times. Here, the adjuvant and intensive therapy and synergistic mechanisms including HDVC combined application of chemoradiotherapies multi-vitamins, targeted drugs, immunotherapies, and oncolytic virus are discussed in detail. Adjuvant and intensive therapy of HDVC can significantly improve the therapeutic effect of HDVC in the metabolic treatment of cancer, but more clinical evidence is needed to support its clinical application.
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Affiliation(s)
- Xin Wang
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Center of Metabolism and Nutrition of Cancer, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Key Laboratory of Cancer FSMP for State Market Regulation, Beijing, China
- Beijing International Science and Technology Cooperation Base for Cancer Metabolism and Nutrition, Beijing, China
| | - Jia He
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Center of Metabolism and Nutrition of Cancer, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Key Laboratory of Cancer FSMP for State Market Regulation, Beijing, China
- Beijing International Science and Technology Cooperation Base for Cancer Metabolism and Nutrition, Beijing, China
| | - Minmin Sun
- CAS Engineering Laboratory for Nanozyme, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Shiwan Wang
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Center of Metabolism and Nutrition of Cancer, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Key Laboratory of Cancer FSMP for State Market Regulation, Beijing, China
- Beijing International Science and Technology Cooperation Base for Cancer Metabolism and Nutrition, Beijing, China
| | - Jinxiu Qu
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Center of Metabolism and Nutrition of Cancer, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Key Laboratory of Cancer FSMP for State Market Regulation, Beijing, China
- Beijing International Science and Technology Cooperation Base for Cancer Metabolism and Nutrition, Beijing, China
| | - Hanping Shi
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
- Center of Metabolism and Nutrition of Cancer, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
- Key Laboratory of Cancer FSMP for State Market Regulation, Beijing, China.
- Beijing International Science and Technology Cooperation Base for Cancer Metabolism and Nutrition, Beijing, China.
- Department of Clinical Nutrition, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
| | - Benqiang Rao
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
- Center of Metabolism and Nutrition of Cancer, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
- Key Laboratory of Cancer FSMP for State Market Regulation, Beijing, China.
- Beijing International Science and Technology Cooperation Base for Cancer Metabolism and Nutrition, Beijing, China.
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16
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He W, Gasmi-Seabrook GMC, Ikura M, Lee JE, Ohh M. Time-resolved NMR detection of prolyl-hydroxylation in intrinsically disordered region of HIF-1α. Proc Natl Acad Sci U S A 2024; 121:e2408104121. [PMID: 39231207 PMCID: PMC11406255 DOI: 10.1073/pnas.2408104121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 07/23/2024] [Indexed: 09/06/2024] Open
Abstract
Prolyl-hydroxylation is an oxygen-dependent posttranslational modification (PTM) that is known to regulate fibril formation of collagenous proteins and modulate cellular expression of hypoxia-inducible factor (HIF) α subunits. However, our understanding of this important but relatively rare PTM has remained incomplete due to the lack of biophysical methodologies that can directly measure multiple prolyl-hydroxylation events within intrinsically disordered proteins. Here, we describe a real-time 13C-direct detection NMR-based assay for studying the hydroxylation of two evolutionarily conserved prolines (P402 and P564) simultaneously in the intrinsically disordered oxygen-dependent degradation domain of hypoxic-inducible factor 1α by exploiting the "proton-less" nature of prolines. We show unambiguously that P564 is rapidly hydroxylated in a time-resolved manner while P402 hydroxylation lags significantly behind that of P564. The differential hydroxylation rate was negligibly influenced by the binding affinity to prolyl-hydroxylase enzyme, but rather by the surrounding amino acid composition, particularly the conserved tyrosine residue at the +1 position to P564. These findings support the unanticipated notion that the evolutionarily conserved P402 seemingly has a minimal impact in normal oxygen-sensing pathway.
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Affiliation(s)
- Wenguang He
- Department of Biochemistry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5G 1M1, Canada
| | | | - Mitsuhiko Ikura
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 1L7, Canada
- Department of Medical Biophysics, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Jeffrey E Lee
- Department of Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Michael Ohh
- Department of Biochemistry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5G 1M1, Canada
- Department of Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
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17
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Cheng B, Ma X, Zhou Y, Liu J, Fei X, Pan W, Peng X, Wang W, Chen J. Recent progress in the development of hypoxia-inducible factor 2α (HIF-2α) modulators: Inhibitors, agonists, and degraders (2009-2024). Eur J Med Chem 2024; 275:116645. [PMID: 38959730 DOI: 10.1016/j.ejmech.2024.116645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 06/22/2024] [Accepted: 06/30/2024] [Indexed: 07/05/2024]
Abstract
Hypoxia-inducible factor 2α (HIF-2α) is a critical transcription factor that regulates cellular responses under hypoxic conditions. In situations of insufficient oxygen supply or patients with Von Hippel-Lindau (VHL) mutations, HIF-2α accumulates and forms a heterodimeric complex with aryl hydrocarbon receptor nuclear translocator (ARNT, or HIF-β). This complex further binds to coactivator p300 and interacts with hypoxia response elements (HREs) on the DNA of downstream target genes, regulating the transcription of a variety of genes (e.g. VEGFA, CCND1, CXCR4, SLC2A1, etc) involved in various processes like angiogenesis, mitochondrial metabolism, cell proliferation, and metastasis. Targeting HIF-2α holds great promise for effectively addressing solid tumors associated with aberrant oxygen-sensing pathways and hypoxia mechanisms, offering broad application prospects. In this review, we provide an overview of recent advancements (2009-2024) in HIF-2α modulators such as inhibitors, agonists, and degraders for cancer therapy. Additionally, we discuss in detail the challenges and future directions regarding HIF-2α modulators.
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Affiliation(s)
- Binbin Cheng
- School of Medicine, Hubei Polytechnic University, Huangshi, 435003, China; Central Laboratory, Wenzhou Medical University Lishui Hospital, Lishui People's Hospital, Lishui, Zhejiang, 323000, China
| | - Xianshi Ma
- Yangxin County People's Hospital of Hubei Province, Yangxin, Hubei, 435200, China
| | - Yingxing Zhou
- School of Medicine, Hubei Polytechnic University, Huangshi, 435003, China
| | - Jin Liu
- School of Medicine, Hubei Polytechnic University, Huangshi, 435003, China
| | - Xiaoting Fei
- School of Medicine, Hubei Polytechnic University, Huangshi, 435003, China
| | - Wei Pan
- Cardiology Department, Geriatric Department, Foshan Women and Children Hospital, Foshan, Guangdong, 528000, China.
| | - Xiaopeng Peng
- College of Pharmacy, Gannan Medical University, Ganzhou, 314000, China.
| | - Wei Wang
- Department of Pharmacy, Zhujiang Hospital, Southern Medical University, 510280, China.
| | - Jianjun Chen
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of New Drug Screening, Southern Medical University, Guangzhou, 510515, China.
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18
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Babin CH, Leiva FP, Verberk WCEP, Rees BB. Evolution of Key Oxygen-Sensing Genes Is Associated with Hypoxia Tolerance in Fishes. Genome Biol Evol 2024; 16:evae183. [PMID: 39165136 PMCID: PMC11370800 DOI: 10.1093/gbe/evae183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 08/05/2024] [Accepted: 08/14/2024] [Indexed: 08/22/2024] Open
Abstract
Low dissolved oxygen (hypoxia) is recognized as a major threat to aquatic ecosystems worldwide. Because oxygen is paramount for the energy metabolism of animals, understanding the functional and genetic drivers of whole-animal hypoxia tolerance is critical to predicting the impacts of aquatic hypoxia. In this study, we investigate the molecular evolution of key genes involved in the detection of and response to hypoxia in ray-finned fishes: the prolyl hydroxylase domain (PHD)-hypoxia-inducible factor (HIF) oxygen-sensing system, also known as the EGLN (egg-laying nine)-HIF oxygen-sensing system. We searched fish genomes for HIFA and EGLN genes, discovered new paralogs from both gene families, and analyzed protein-coding sites under positive selection. The physicochemical properties of these positively selected amino acid sites were summarized using linear discriminants for each gene. We employed phylogenetic generalized least squares to assess the relationship between these linear discriminants for each HIFA and EGLN and hypoxia tolerance as reflected by the critical oxygen tension (Pcrit) of the corresponding species. Our results demonstrate that Pcrit in ray-finned fishes correlates with the physicochemical variation of positively selected sites in specific HIFA and EGLN genes. For HIF2A, two linear discriminants captured more than 90% of the physicochemical variation of these sites and explained between 20% and 39% of the variation in Pcrit. Thus, variation in HIF2A among fishes may contribute to their capacity to cope with aquatic hypoxia, similar to its proposed role in conferring tolerance to high-altitude hypoxia in certain lineages of terrestrial vertebrates.
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Affiliation(s)
- Courtney H Babin
- Department of Biological Sciences, University of New Orleans, New Orleans, LA 70148, USA
| | - Félix P Leiva
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven 27570, Germany
| | - Wilco C E P Verberk
- Department of Animal Ecology and Physiology, Radboud University Nijmegen, Nijmegen, The Netherlands
| | - Bernard B Rees
- Department of Biological Sciences, University of New Orleans, New Orleans, LA 70148, USA
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Isono E, Li J, Pulido P, Siao W, Spoel SH, Wang Z, Zhuang X, Trujillo M. Protein degrons and degradation: Exploring substrate recognition and pathway selection in plants. THE PLANT CELL 2024; 36:3074-3098. [PMID: 38701343 PMCID: PMC11371205 DOI: 10.1093/plcell/koae141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/27/2024] [Accepted: 04/07/2024] [Indexed: 05/05/2024]
Abstract
Proteome composition is dynamic and influenced by many internal and external cues, including developmental signals, light availability, or environmental stresses. Protein degradation, in synergy with protein biosynthesis, allows cells to respond to various stimuli and adapt by reshaping the proteome. Protein degradation mediates the final and irreversible disassembly of proteins, which is important for protein quality control and to eliminate misfolded or damaged proteins, as well as entire organelles. Consequently, it contributes to cell resilience by buffering against protein or organellar damage caused by stresses. Moreover, protein degradation plays important roles in cell signaling, as well as transcriptional and translational events. The intricate task of recognizing specific proteins for degradation is achieved by specialized systems that are tailored to the substrate's physicochemical properties and subcellular localization. These systems recognize diverse substrate cues collectively referred to as "degrons," which can assume a range of configurations. They are molecular surfaces recognized by E3 ligases of the ubiquitin-proteasome system but can also be considered as general features recognized by other degradation systems, including autophagy or even organellar proteases. Here we provide an overview of the newest developments in the field, delving into the intricate processes of protein recognition and elucidating the pathways through which they are recruited for degradation.
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Affiliation(s)
- Erika Isono
- Department of Biology, University of Konstanz, 78457 Konstanz, Germany
| | - Jianming Li
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong
| | - Pablo Pulido
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), 28049 Madrid, Spain
| | - Wei Siao
- Department of Biology, Aachen RWTH University, Institute of Molecular Plant Physiology, 52074 Aachen, Germany
| | - Steven H Spoel
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, UK
| | - Zhishuo Wang
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, UK
| | - Xiaohong Zhuang
- School of Life Sciences, Centre for Cell and Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Marco Trujillo
- Department of Biology, Aachen RWTH University, Institute of Molecular Plant Physiology, 52074 Aachen, Germany
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20
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Patel K, Jiramongkol Y, Norman A, Maxwell JWC, Mohanty B, Payne RJ, Cook KM, White MD. The enzymatic oxygen sensor cysteamine dioxygenase binds its protein substrates through their N-termini. J Biol Chem 2024; 300:107653. [PMID: 39122008 PMCID: PMC11406360 DOI: 10.1016/j.jbc.2024.107653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024] Open
Abstract
The non-heme iron-dependent dioxygenase 2-aminoethanethiol (aka cysteamine) dioxygenase (ADO) has recently been identified as an enzymatic oxygen sensor that coordinates cellular changes to hypoxia by regulating the stability of proteins bearing an N-terminal cysteine (Nt-cys) through the N-degron pathway. It catalyzes O2-dependent Nt-cys sulfinylation, which promotes proteasomal degradation of the target. Only a few ADO substrates have been verified, including regulators of G-protein signaling (RGS) 4 and 5, and the proinflammatory cytokine interleukin-32, all of which exhibit cell and/or tissue specific expression patterns. ADO, in contrast, is ubiquitously expressed, suggesting it can regulate the stability of additional Nt-cys proteins in an O2-dependent manner. However, the role of individual chemical groups, active site metal, amino acid composition, and globular structure on protein substrate association remains elusive. To help identify new targets and examine the underlying biochemistry of the system, we conducted a series of biophysical experiments to investigate the binding requirements of established ADO substrates RGS5 and interleukin-32. We demonstrate, using surface plasmon response and enzyme assays, that a free, unmodified Nt-thiol and Nt-amine are vital for substrate engagement through active site metal coordination, with residues next to Nt-cys moderately impacting association and catalytic efficiency. Additionally, we show, through 1H-15N heteronuclear single quantum coherence nuclear magnetic resonance titrations, that the globular portion of RGS5 has limited impact on ADO association, with interactions restricted to the N-terminus. This work establishes key features involved in ADO substrate binding, which will help identify new protein targets and, subsequently, elucidate its role in hypoxic adaptation.
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Affiliation(s)
- Karishma Patel
- School of Chemistry, The University of Sydney, Camperdown, NSW, Australia; School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, Australia
| | - Yannasittha Jiramongkol
- School of Chemistry, The University of Sydney, Camperdown, NSW, Australia; Faculty of Science, Charles Perkins Centre, The University of Sydney, Camperdown, NSW, Australia
| | - Alexander Norman
- School of Chemistry, The University of Sydney, Camperdown, NSW, Australia
| | - Joshua W C Maxwell
- School of Chemistry, The University of Sydney, Camperdown, NSW, Australia; Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Sydney, NSW, Australia
| | - Biswaranjan Mohanty
- Sydney Analytical Core Research Facility, The University of Sydney, Camperdown, NSW, Australia
| | - Richard J Payne
- School of Chemistry, The University of Sydney, Camperdown, NSW, Australia; Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Sydney, NSW, Australia
| | - Kristina M Cook
- Faculty of Medicine and Health, Charles Perkins Centre, The University of Sydney, Camperdown, NSW, Australia
| | - Mark D White
- School of Chemistry, The University of Sydney, Camperdown, NSW, Australia.
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21
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Jucht AE, Scholz CC. PHD1-3 oxygen sensors in vivo-lessons learned from gene deletions. Pflugers Arch 2024; 476:1307-1337. [PMID: 38509356 PMCID: PMC11310289 DOI: 10.1007/s00424-024-02944-x] [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: 01/27/2024] [Revised: 03/02/2024] [Accepted: 03/07/2024] [Indexed: 03/22/2024]
Abstract
Oxygen sensors enable cells to adapt to limited oxygen availability (hypoxia), affecting various cellular and tissue responses. Prolyl-4-hydroxylase domain 1-3 (PHD1-3; also called Egln1-3, HIF-P4H 1-3, HIF-PH 1-3) proteins belong to the Fe2+- and 2-oxoglutarate-dependent dioxygenase superfamily and utilise molecular oxygen (O2) alongside 2-oxoglutarate as co-substrate to hydroxylate two proline residues of α subunits of the dimeric hypoxia inducible factor (HIF) transcription factor. PHD1-3-mediated hydroxylation of HIF-α leads to its degradation and inactivation. Recently, various PHD inhibitors (PHI) have entered the clinics for treatment of renal anaemia. Pre-clinical analyses indicate that PHI treatment may also be beneficial in numerous other hypoxia-associated diseases. Nonetheless, the underlying molecular mechanisms of the observed protective effects of PHIs are only partly understood, currently hindering their translation into the clinics. Moreover, the PHI-mediated increase of Epo levels is not beneficial in all hypoxia-associated diseases and PHD-selective inhibition may be advantageous. Here, we summarise the current knowledge about the relevance and function of each of the three PHD isoforms in vivo, based on the deletion or RNA interference-mediated knockdown of each single corresponding gene in rodents. This information is crucial for our understanding of the physiological relevance and function of the PHDs as well as for elucidating their individual impact on hypoxia-associated diseases. Furthermore, this knowledge highlights which diseases may best be targeted by PHD isoform-selective inhibitors in case such pharmacologic substances become available.
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Affiliation(s)
- Agnieszka E Jucht
- Institute of Physiology, University of Zurich, Zurich, 8057, Switzerland
| | - Carsten C Scholz
- Institute of Physiology, University Medicine Greifswald, Friedrich-Ludwig-Jahn-Str. 15a, 17475, Greifswald, Germany.
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22
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Pauzaite T, Wit N, Seear RV, Nathan JA. Deubiquitinating enzyme mutagenesis screens identify a USP43-dependent HIF-1 transcriptional response. EMBO J 2024; 43:3677-3709. [PMID: 39009674 PMCID: PMC11377827 DOI: 10.1038/s44318-024-00166-6] [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: 01/09/2024] [Revised: 05/13/2024] [Accepted: 06/24/2024] [Indexed: 07/17/2024] Open
Abstract
The ubiquitination and proteasome-mediated degradation of Hypoxia Inducible Factors (HIFs) is central to metazoan oxygen-sensing, but the involvement of deubiquitinating enzymes (DUBs) in HIF signalling is less clear. Here, using a bespoke DUBs sgRNA library we conduct CRISPR/Cas9 mutagenesis screens to determine how DUBs are involved in HIF signalling. Alongside defining DUBs involved in HIF activation or suppression, we identify USP43 as a DUB required for efficient activation of a HIF response. USP43 is hypoxia regulated and selectively associates with the HIF-1α isoform, and while USP43 does not alter HIF-1α stability, it facilitates HIF-1 nuclear accumulation and binding to its target genes. Mechanistically, USP43 associates with 14-3-3 proteins in a hypoxia and phosphorylation dependent manner to increase the nuclear pool of HIF-1. Together, our results highlight the multifunctionality of DUBs, illustrating that they can provide important signalling functions alongside their catalytic roles.
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Affiliation(s)
- Tekle Pauzaite
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, Department of Medicine, University of Cambridge, Cambridge, CB2 0AW, United Kingdom
| | - Niek Wit
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, Department of Medicine, University of Cambridge, Cambridge, CB2 0AW, United Kingdom
| | - Rachel V Seear
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, Department of Medicine, University of Cambridge, Cambridge, CB2 0AW, United Kingdom
| | - James A Nathan
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, Department of Medicine, University of Cambridge, Cambridge, CB2 0AW, United Kingdom.
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23
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Nahid DS, Coffey KA, Bei AK, Cordy RJ. Understanding the significance of oxygen tension on the biology of Plasmodium falciparum blood stages: From the human body to the laboratory. PLoS Pathog 2024; 20:e1012514. [PMID: 39298535 DOI: 10.1371/journal.ppat.1012514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2024] Open
Abstract
Plasmodium falciparum undergoes sequestration within deep tissues of the human body, spanning multiple organ systems with differing oxygen (O2) concentrations. The parasite is exposed to an even greater range of O2 concentrations as it transitions from the human to the mosquito host, suggesting a high level of plasticity as it navigates these different environments. In this review, we explore factors that may contribute to the parasite's response to different environmental O2 concentrations, recognizing that there are likely multiple pieces to this puzzle. We first review O2-sensing mechanisms, which exist in other apicomplexans such as Toxoplasma gondii and consider whether similar systems could exist in Plasmodium. Next, we review morphological and functional changes in P. falciparum's mitochondrion during the asexual-to-sexual stage transition and discuss how these changes overlap with the parasite's access to O2. We then delve into reactive oxygen species (ROS) as ROS production is influenced by O2 availability and oxidative stress impacts Plasmodium intraerythrocytic development. Lastly, given that the primary role of the red blood cell (RBC) is to deliver O2 throughout the body, we discuss how changes in the oxygenation status of hemoglobin, the RBC's O2-carrying protein and key nutrient for Plasmodium, could also potentially impact the parasite's growth during intraerythrocytic development. This review also highlights studies that have investigated P. falciparum biology under varying O2 concentrations and covers technical aspects related to P. falciparum cultivation in the lab, focusing on sources of technical variation that could alter the amount of dissolved O2 encountered by cells during in vitro experiments. Lastly, we discuss how culture systems can better replicate in vivo heterogeneity with respect to O2 gradients, propose ideas for further research in this area, and consider translational implications related to O2 and malaria.
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Affiliation(s)
- Dinah S Nahid
- Department of Biology, Wake Forest University, Winston-Salem, North Carolina, United States of America
| | - Kevin A Coffey
- Department of Biology, Wake Forest University, Winston-Salem, North Carolina, United States of America
| | - Amy K Bei
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut, United States of America
| | - Regina Joice Cordy
- Department of Biology, Wake Forest University, Winston-Salem, North Carolina, United States of America
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24
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DeMichele E, Buret AG, Taylor CT. Hypoxia-inducible factor-driven glycolytic adaptations in host-microbe interactions. Pflugers Arch 2024; 476:1353-1368. [PMID: 38570355 PMCID: PMC11310250 DOI: 10.1007/s00424-024-02953-w] [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: 02/06/2024] [Revised: 02/07/2024] [Accepted: 03/22/2024] [Indexed: 04/05/2024]
Abstract
Mammalian cells utilize glucose as a primary carbon source to produce energy for most cellular functions. However, the bioenergetic homeostasis of cells can be perturbed by environmental alterations, such as changes in oxygen levels which can be associated with bacterial infection. Reduction in oxygen availability leads to a state of hypoxia, inducing numerous cellular responses that aim to combat this stress. Importantly, hypoxia strongly augments cellular glycolysis in most cell types to compensate for the loss of aerobic respiration. Understanding how this host cell metabolic adaptation to hypoxia impacts the course of bacterial infection will identify new anti-microbial targets. This review will highlight developments in our understanding of glycolytic substrate channeling and spatiotemporal enzymatic organization in response to hypoxia, shedding light on the integral role of the hypoxia-inducible factor (HIF) during host-pathogen interactions. Furthermore, the ability of intracellular and extracellular bacteria (pathogens and commensals alike) to modulate host cellular glucose metabolism will be discussed.
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Affiliation(s)
- Emily DeMichele
- School of Medicine and Systems Biology Ireland, The Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland
- Department of Biological Sciences, University of Calgary, Calgary, AB, Canada
| | - Andre G Buret
- Department of Biological Sciences, University of Calgary, Calgary, AB, Canada
| | - Cormac T Taylor
- School of Medicine and Systems Biology Ireland, The Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland.
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25
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Cao Y, Chen F, Zhu S, Zhu D, Qi H. Staphylococcus aureus infection initiates hypoxia-mediated STIP1 homology and U-box containing protein 1 upregulation to trigger osteomyelitis. Toxicon 2024; 248:108049. [PMID: 39059559 DOI: 10.1016/j.toxicon.2024.108049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 07/12/2024] [Accepted: 07/23/2024] [Indexed: 07/28/2024]
Abstract
Although little is known about the regulatory mechanisms underlying the pathogenesis of osteomyelitis caused by Staphylococcus aureus (S. aureus), hypoxia-inducible factor-1α (HIF-1α) and STIP1 homology and U-box containing protein 1 (STUB1) have been found to be up-regulated in both S. aureus infected MC3T3-E1 cells and in patients with osteomyelitis. HIF-1α directly targets STUB1 to induce its expression. In MC3T3-E1 cells infected with S. aureus, silencing HIF-1α and STUB1 and administering the hypoxia inhibitor IDF-11774 consistently increased the expression of OSX and RUNX2, as well as the levels of alizarin Red S and alkaline phosphatase activity. In a mouse model of osteomyelitis, S. aureus infection elevated HIF-1α expression and serum STUB1 levels. Interleukin (IL)-6, IL-1β, and C-reactive protein levels in serum were reduced after treatment with the hypoxia inhibitor IDF-11774. Following an infection with S. aureus, hypoxia was activated to cause STUB1 overexpression by directly targeting HIF-1α, ultimately causing osteomyelitis symptoms such as osteogenesis and mineralization defected and increased inflammation. This study presents a novel signaling cascade in the pathogenesis of osteomyelitis involving hypoxia/HIF-1α/STUB1. This signaling cascade may be a target for therapeutic interventions.
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Affiliation(s)
- Yuan Cao
- Department of Pediatric Surgery, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Feng Chen
- Department of Pediatric, Luodian Hospital, Shanghai, China
| | - Suyue Zhu
- Department of Pediatric, Suqian Hospital Affiliated to Xuzhou Medical University, Suqian, China
| | - Dongsheng Zhu
- Department of Pediatric Surgery, The First People's Hospital of Lianyungang, Lianyungang, China.
| | - Han Qi
- Department of Surgery, The Second People's Hospital of Lianyungang, Lianyungang, China.
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26
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Sharma V, Patial V. Insights into the molecular mechanisms of malnutrition-associated steatohepatitis: A review. Liver Int 2024; 44:2156-2173. [PMID: 38775001 DOI: 10.1111/liv.15932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 03/21/2024] [Accepted: 03/28/2024] [Indexed: 08/10/2024]
Abstract
Malnutrition is a public health epidemic mainly targeting poverty-stricken people, young ones, older people, pregnant women, and individuals with metabolic disorders. Severe malnutrition is linked with several metabolic defects, such as hepatic dysfunction, hypertension, cardiovascular disease, and osteoarthritis. The proper functioning of the liver plays a crucial role in ensuring the supply of nutrients to the body. Consequently, inadequate nutrition can lead to severe periportal hepatic steatosis due to compromised mitochondrial and peroxisome functions. Reduced protein intake disrupts essential metabolic processes like the TCA cycle, oxidative phosphorylation, and β-oxidation, ultimately affecting ATP production. Furthermore, this can trigger a cascade of events, including disturbances in amino acid metabolism, iron metabolism, and gut microbiota, which activate genes involved in de novo lipogenesis, leading to the accumulation of lipids in the liver. The condition, in prolonged cases, progresses to steatohepatitis and liver fibrosis. Limited therapeutic solutions are available; however, few dietary supplements and drugs have demonstrated positive effects on the growth and health of malnourished individuals. These supplements improve parameters such as inflammatory and oxidative status, reduce triglyceride accumulation, enhance insulin sensitivity, and downregulate gene expression in hepatic lipid metabolism. This review elucidates the various mechanisms involved in malnutrition-associated steatohepatitis and provides an overview of the available approaches for treating this condition.
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Affiliation(s)
- Vinesh Sharma
- Pharmacology and Toxicology Laboratory, Dietetics & Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Vikram Patial
- Pharmacology and Toxicology Laboratory, Dietetics & Nutrition Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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27
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Xinliang Z, Achkasov EE, Gavrikov LK, Yuchen L, Zhang C, Dudnik EN, Rumyantseva O, Beeraka NM, Glazachev OS. Assessing the importance and safety of hypoxia conditioning for patients with occupational pulmonary diseases: A recent clinical perspective. Biomed Pharmacother 2024; 178:117275. [PMID: 39126774 DOI: 10.1016/j.biopha.2024.117275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 07/25/2024] [Accepted: 08/05/2024] [Indexed: 08/12/2024] Open
Abstract
Occupational pulmonary diseases (OPDs) pose a significant global health challenge, contributing to high mortality rates. This review delves into the pathophysiology of hypoxia and the safety of intermittent hypoxic conditioning (IHC) in OPD patients. By examining sources such as PubMed, Relemed, NLM, Scopus, and Google Scholar, the review evaluates the efficacy of IHC in clinical outcomes for OPD patients. It highlights the complexities of cardiovascular and respiratory regulation dysfunctions in OPDs, focusing on respiratory control abnormalities and the impact of intermittent hypoxic exposures. Key areas include the physiological effects of hypoxia, the role of hypoxia-inducible factor-1 alpha (HIF-1α) in occupational lung diseases, and the links between brain ischemia, stroke, and OPDs. The review also explores the interaction between intermittent hypoxic exposures, mitochondrial energetics, and lung physiology. The potential of IHE to improve clinical manifestations and underlying pathophysiology in OPD patients is thoroughly examined. This comprehensive analysis aims to benefit molecular pathologists, pulmonologists, clinicians, and physicians by enhancing understanding of IHE's clinical benefits, from research to patient care, and improving clinical outcomes for OPD patients.
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Affiliation(s)
- Zhang Xinliang
- Chair of Sports Medicine and Rehabilitation, Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2 Trubetskaya Str., Moscow 119991, Russia; Co-Chair of Normal Physiology, Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2 Trubetskaya Str., Moscow 119991, Russia.
| | - Eugeny E Achkasov
- Chair of Sports Medicine and Rehabilitation, Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2 Trubetskaya Str., Moscow 119991, Russia.
| | - Leonid K Gavrikov
- Volgograd State Medical University, 1, Pavshikh Bortsov Sq., Volgograd 400131, Russia.
| | - Li Yuchen
- Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2 Trubetskaya Str., Moscow 119991, Russia.
| | - Chen Zhang
- Chair of Epidemiology and Modern Technologies of Vaccination, Institute of Professional Education, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2 Trubetskaya Str., Moscow 119991, Russia
| | - Elena N Dudnik
- Co-Chair of Normal Physiology, Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2 Trubetskaya Str., Moscow 119991, Russia.
| | - Olga Rumyantseva
- Izmerov Research Institute of Occupational Health, 31 Budeynniy Avenye, Moscow 105275, Russia.
| | - Narasimha M Beeraka
- Herman B. Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, 1044 W. Walnut Street, R4-168, Indianapolis, IN 46202, USA; Department of Human Anatomy and Histology, I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), 8/2 Trubetskaya Str., Moscow 119991, Russia; Raghavendra Institute of Pharmaceutical Education and Research (RIPER), Chiyyedu, Anantapuramu, Andhra Pradesh 515721, India.
| | - Oleg S Glazachev
- Co-Chair of Normal Physiology, Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2 Trubetskaya Str., Moscow 119991, Russia.
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28
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Fandrey J. How do cells sense oxygen? Pflugers Arch 2024; 476:1303-1305. [PMID: 39101995 PMCID: PMC11310221 DOI: 10.1007/s00424-024-03000-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Revised: 07/23/2024] [Accepted: 07/25/2024] [Indexed: 08/06/2024]
Affiliation(s)
- Joachim Fandrey
- Institut für Physiologie, Universität Duisburg-Essen, Hufelandstrasse 55 D, Essen, 45147, Germany.
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29
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Huang HT, Lumpkin RJ, Tsai RW, Su S, Zhao X, Xiong Y, Chen J, Mageed N, Donovan KA, Fischer ES, Sellers WR. Ubiquitin-specific proximity labeling for the identification of E3 ligase substrates. Nat Chem Biol 2024; 20:1227-1236. [PMID: 38514884 DOI: 10.1038/s41589-024-01590-9] [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: 07/13/2023] [Accepted: 02/26/2024] [Indexed: 03/23/2024]
Abstract
Protein ubiquitylation controls diverse processes within eukaryotic cells, including protein degradation, and is often dysregulated in disease. Moreover, small-molecule degraders that redirect ubiquitylation activities toward disease targets are an emerging and promising therapeutic class. Over 600 E3 ubiquitin ligases are expressed in humans, but their substrates remain largely elusive, necessitating the development of new methods for their discovery. Here we report the development of E3-substrate tagging by ubiquitin biotinylation (E-STUB), a ubiquitin-specific proximity labeling method that biotinylates ubiquitylated substrates in proximity to an E3 ligase of interest. E-STUB accurately identifies the direct ubiquitylated targets of protein degraders, including collateral targets and ubiquitylation events that do not lead to substrate degradation. It also detects known substrates of E3 ligase CRBN and VHL with high specificity. With the ability to elucidate proximal ubiquitylation events, E-STUB may facilitate the development of proximity-inducing therapeutics and act as a generalizable method for E3-substrate mapping.
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Affiliation(s)
- Hai-Tsang Huang
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Ryan J Lumpkin
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Ryan W Tsai
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Shuyao Su
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Xu Zhao
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Yuan Xiong
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - James Chen
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Nada Mageed
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Katherine A Donovan
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Eric S Fischer
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - William R Sellers
- Broad Institute of Harvard and MIT, Cambridge, MA, USA.
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
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30
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Alva R, Wiebe JE, Stuart JA. Revisiting reactive oxygen species production in hypoxia. Pflugers Arch 2024; 476:1423-1444. [PMID: 38955833 DOI: 10.1007/s00424-024-02986-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 06/20/2024] [Accepted: 06/24/2024] [Indexed: 07/04/2024]
Abstract
Cellular responses to hypoxia are crucial in various physiological and pathophysiological contexts and have thus been extensively studied. This has led to a comprehensive understanding of the transcriptional response to hypoxia, which is regulated by hypoxia-inducible factors (HIFs). However, the detailed molecular mechanisms of HIF regulation in hypoxia remain incompletely understood. In particular, there is controversy surrounding the production of mitochondrial reactive oxygen species (ROS) in hypoxia and how this affects the stabilization and activity of HIFs. This review examines this controversy and attempts to shed light on its origin. We discuss the role of physioxia versus normoxia as baseline conditions that can affect the subsequent cellular response to hypoxia and highlight the paucity of data on pericellular oxygen levels in most experiments, leading to variable levels of hypoxia that might progress to anoxia over time. We analyze the different outcomes reported in isolated mitochondria, versus intact cells or whole organisms, and evaluate the reliability of various ROS-detecting tools. Finally, we examine the cell-type and context specificity of oxygen's various effects. We conclude that while recent evidence suggests that the effect of hypoxia on ROS production is highly dependent on the cell type and the duration of exposure, efforts should be made to conduct experiments under carefully controlled, physiological microenvironmental conditions in order to rule out potential artifacts and improve reproducibility in research.
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Affiliation(s)
- Ricardo Alva
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada.
| | - Jacob E Wiebe
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Jeffrey A Stuart
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada.
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31
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Ježek P, Dlasková A, Engstová H, Špačková J, Tauber J, Průchová P, Kloppel E, Mozheitova O, Jabůrek M. Mitochondrial Physiology of Cellular Redox Regulations. Physiol Res 2024; 73:S217-S242. [PMID: 38647168 PMCID: PMC11412358 DOI: 10.33549/physiolres.935269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024] Open
Abstract
Mitochondria (mt) represent the vital hub of the molecular physiology of the cell, being decision-makers in cell life/death and information signaling, including major redox regulations and redox signaling. Now we review recent advances in understanding mitochondrial redox homeostasis, including superoxide sources and H2O2 consumers, i.e., antioxidant mechanisms, as well as exemplar situations of physiological redox signaling, including the intramitochondrial one and mt-to-cytosol redox signals, which may be classified as acute and long-term signals. This review exemplifies the acute redox signals in hypoxic cell adaptation and upon insulin secretion in pancreatic beta-cells. We also show how metabolic changes under these circumstances are linked to mitochondrial cristae narrowing at higher intensity of ATP synthesis. Also, we will discuss major redox buffers, namely the peroxiredoxin system, which may also promote redox signaling. We will point out that pathological thresholds exist, specific for each cell type, above which the superoxide sources exceed regular antioxidant capacity and the concomitant harmful processes of oxidative stress subsequently initiate etiology of numerous diseases. The redox signaling may be impaired when sunk in such excessive pro-oxidative state.
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Affiliation(s)
- P Ježek
- Laboratory of Mitochondrial Physiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic.
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32
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Walter Jackson Iii, Yang Y, Salman S, Dordai D, Lyu Y, Datan E, Drehmer D, Huang TYT, Hwang Y, Semenza GL. Pharmacologic HIF stabilization activates costimulatory receptor expression to increase antitumor efficacy of adoptive T cell therapy. SCIENCE ADVANCES 2024; 10:eadq2366. [PMID: 39196939 DOI: 10.1126/sciadv.adq2366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Accepted: 07/23/2024] [Indexed: 08/30/2024]
Abstract
Adoptive cell transfer (ACT) is a therapeutic strategy to augment antitumor immunity. Here, we report that ex vivo treatment of mouse CD8+ T cells with dimethyloxalylglycine (DMOG), a stabilizer of hypoxia-inducible factors (HIFs), induced HIF binding to the genes encoding the costimulatory receptors CD81, GITR, OX40, and 4-1BB, leading to increased expression. DMOG treatment increased T cell killing of melanoma cells, which was further augmented by agonist antibodies targeting each costimulatory receptor. In tumor-bearing mice, ACT using T cells treated ex vivo with DMOG and agonist antibodies resulted in decreased tumor growth compared to ACT using control T cells and increased intratumoral markers of CD8+ T cells (CD7, CD8A, and CD8B1), natural killer cells (NCR1 and KLRK1), and cytolytic activity (perforin-1 and tumor necrosis factor-α). Costimulatory receptor gene expression was also induced when CD8+ T cells were treated with three highly selective HIF stabilizers that are currently in clinical use.
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MESH Headings
- Animals
- Mice
- Immunotherapy, Adoptive/methods
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- CD8-Positive T-Lymphocytes/drug effects
- Amino Acids, Dicarboxylic/pharmacology
- Cell Line, Tumor
- Receptors, OX40/metabolism
- Glucocorticoid-Induced TNFR-Related Protein/metabolism
- Tumor Necrosis Factor Receptor Superfamily, Member 9/metabolism
- Mice, Inbred C57BL
- Melanoma, Experimental/therapy
- Melanoma, Experimental/immunology
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Cytotoxicity, Immunologic/drug effects
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Affiliation(s)
- Walter Jackson Iii
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Yongkang Yang
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD 21205, USA
| | - Shaima Salman
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Dominic Dordai
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Yajing Lyu
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Emmanuel Datan
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Daiana Drehmer
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Tina Yi-Ting Huang
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Yousang Hwang
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Gregg L Semenza
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD 21205, USA
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33
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Arai Y, Cha R, Nakagawa S, Inoue A, Nakamura K, Takahashi K. Cartilage Homeostasis under Physioxia. Int J Mol Sci 2024; 25:9398. [PMID: 39273346 PMCID: PMC11395513 DOI: 10.3390/ijms25179398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Revised: 08/16/2024] [Accepted: 08/28/2024] [Indexed: 09/15/2024] Open
Abstract
Articular cartilage receives nutrients and oxygen from the synovial fluid to maintain homeostasis. However, compared to tissues with abundant blood flow, articular cartilage is exposed to a hypoxic environment (i.e., physioxia) and has an enhanced hypoxic stress response. Hypoxia-inducible factors (HIFs) play a pivotal role in this physioxic environment. In normoxic conditions, HIFs are downregulated, whereas in physioxic conditions, they are upregulated. The HIF-α family comprises three members: HIF-1α, HIF-2α, and HIF-3α. Each member has a distinct function in articular cartilage. In osteoarthritis, which is primarily caused by degeneration of articular cartilage, HIF-1α is upregulated in chondrocytes and is believed to protect articular cartilage by acting anabolically on it. Conversely, in contrast to HIF-1α, HIF-2α exerts a catabolic influence on articular cartilage. It may therefore be possible to develop a new treatment for OA by controlling the expression of HIF-1α and HIF-2α with drugs or by altering the oxygen environment in the joints.
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Affiliation(s)
- Yuji Arai
- Department of Sports and Para-Sports Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Ryota Cha
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Shuji Nakagawa
- Department of Sports and Para-Sports Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Atsuo Inoue
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Kei Nakamura
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Kenji Takahashi
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
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34
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Wang R, Gomez Salazar M, Pruñonosa Cervera I, Coutts A, French K, Pinto MM, Gohlke S, García-Martín R, Blüher M, Schofield CJ, Kourtzelis I, Stimson RH, Bénézech C, Christian M, Schulz TJ, Gudmundsson EF, Jennings LL, Gudnason VG, Chavakis T, Morton NM, Emilsson V, Michailidou Z. Adipocyte deletion of the oxygen-sensor PHD2 sustains elevated energy expenditure at thermoneutrality. Nat Commun 2024; 15:7483. [PMID: 39209825 PMCID: PMC11362468 DOI: 10.1038/s41467-024-51718-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 08/14/2024] [Indexed: 09/04/2024] Open
Abstract
Enhancing thermogenic brown adipose tissue (BAT) function is a promising therapeutic strategy for metabolic disease. However, predominantly thermoneutral modern human living conditions deactivate BAT. We demonstrate that selective adipocyte deficiency of the oxygen-sensor HIF-prolyl hydroxylase (PHD2) gene overcomes BAT dormancy at thermoneutrality. Adipocyte-PHD2-deficient mice maintain higher energy expenditure having greater BAT thermogenic capacity. In human and murine adipocytes, a PHD inhibitor increases Ucp1 levels. In murine brown adipocytes, antagonising the major PHD2 target, hypoxia-inducible factor-(HIF)-2a abolishes Ucp1 that cannot be rescued by PHD inhibition. Mechanistically, PHD2 deficiency leads to HIF2 stabilisation and binding of HIF2 to the Ucp1 promoter, thus enhancing its expression in brown adipocytes. Serum proteomics analysis of 5457 participants in the deeply phenotyped Age, Gene and Environment Study reveal that serum PHD2 associates with increased risk of metabolic disease. Here we show that adipose-PHD2-inhibition is a therapeutic strategy for metabolic disease and identify serum PHD2 as a disease biomarker.
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Affiliation(s)
- Rongling Wang
- Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Mario Gomez Salazar
- Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Iris Pruñonosa Cervera
- Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Amanda Coutts
- Department of Biosciences, School of Science and Technology, Nottingham Trent University, Clifton, Nottingham, UK
| | - Karen French
- Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Marlene Magalhaes Pinto
- Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Sabrina Gohlke
- Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition, Potsdam-Rehbrücke, Nuthetal, Germany
| | - Ruben García-Martín
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC (CNB-CSIC), Campus-UAM, Madrid, Spain
| | - Matthias Blüher
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, Leipzig, Germany
| | - Christopher J Schofield
- Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research University of Oxford, Oxford, UK
| | - Ioannis Kourtzelis
- Hull York Medical School, York Biomedical Research Institute, University of York, York, UK
| | - Roland H Stimson
- Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Cécile Bénézech
- Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Mark Christian
- Department of Biosciences, School of Science and Technology, Nottingham Trent University, Clifton, Nottingham, UK
| | - Tim J Schulz
- Department of Adipocyte Development and Nutrition, German Institute of Human Nutrition, Potsdam-Rehbrücke, Nuthetal, Germany
- German Center for Diabetes Research (DZD), München-Neuherberg, Germany
| | | | - Lori L Jennings
- Novartis Institutes for Biomedical Research, Cambridge, MA, USA
| | - Vilmundur G Gudnason
- Icelandic Heart Association, Kopavogur, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Triantafyllos Chavakis
- Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
- German Center for Diabetes Research (DZD), München-Neuherberg, Germany
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
- Paul Langerhans Institute Dresden, Helmholtz Zentrum München, University Hospital and Faculty of Medicine Technische Universität Dresden, Dresden, Germany
| | - Nicholas M Morton
- Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
- Department of Biosciences, School of Science and Technology, Nottingham Trent University, Clifton, Nottingham, UK
| | - Valur Emilsson
- Icelandic Heart Association, Kopavogur, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Zoi Michailidou
- Centre for Cardiovascular Sciences, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK.
- Department of Biosciences, School of Science and Technology, Nottingham Trent University, Clifton, Nottingham, UK.
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35
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Zheng JH, Zhu YH, Yang J, Ji PX, Zhao RK, Duan ZH, Yao HF, Jia QY, Yin YF, Hu LP, Li Q, Jiang SH, Huo YM, Liu W, Sun YW, Liu DJ. A CLIC1 network coordinates matrix stiffness and the Warburg effect to promote tumor growth in pancreatic cancer. Cell Rep 2024; 43:114633. [PMID: 39154343 DOI: 10.1016/j.celrep.2024.114633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 06/19/2024] [Accepted: 07/30/2024] [Indexed: 08/20/2024] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) features substantial matrix stiffening and reprogrammed glucose metabolism, particularly the Warburg effect. However, the complex interplay between these traits and their impact on tumor advancement remains inadequately explored. Here, we integrated clinical, cellular, and bioinformatics approaches to explore the connection between matrix stiffness and the Warburg effect in PDAC, identifying CLIC1 as a key mediator. Elevated CLIC1 expression, induced by matrix stiffness through Wnt/β-catenin/TCF4 signaling, signifies poorer prognostic outcomes in PDAC. Functionally, CLIC1 serves as a catalyst for glycolytic metabolism, propelling tumor proliferation. Mechanistically, CLIC1 fortifies HIF1α stability by curbing hydroxylation via reactive oxygen species (ROS). Collectively, PDAC cells elevate CLIC1 levels in a matrix-stiffness-responsive manner, bolstering the Warburg effect to drive tumor growth via ROS/HIF1α signaling. Our insights highlight opportunities for targeted therapies that concurrently address matrix properties and metabolic rewiring, with CLIC1 emerging as a promising intervention point.
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Affiliation(s)
- Jia-Hao Zheng
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Yu-Heng Zhu
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Jian Yang
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Pei-Xuan Ji
- Shanghai Institute of Digestive Disease, Division of Gastroenterology and Hepatology, NHC Key Laboratory of Digestive Diseases, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200001, P.R. China
| | - Rui-Kang Zhao
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200438, P.R. China
| | - Zong-Hao Duan
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Hong-Fei Yao
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Qin-Yuan Jia
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Yi-Fan Yin
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Li-Peng Hu
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Qing Li
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Shu-Heng Jiang
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Yan-Miao Huo
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China.
| | - Wei Liu
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China.
| | - Yong-Wei Sun
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China.
| | - De-Jun Liu
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, P.R. China; Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China.
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Ohgaki R, Hirase Y, Xu M, Okanishi H, Kanai Y. LAT1 expression in colorectal cancer cells is unresponsive to HIF-1/2α accumulation under experimental hypoxia. Sci Rep 2024; 14:19635. [PMID: 39179631 PMCID: PMC11343765 DOI: 10.1038/s41598-024-70603-3] [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: 01/26/2024] [Accepted: 08/19/2024] [Indexed: 08/26/2024] Open
Abstract
L-type amino acid transporter 1 (LAT1) is upregulated in various cancer types and contributes to disease progression. Previous studies have demonstrated or suggested that hypoxia-inducible factors (HIFs), the key transcription factors in hypoxic responses, control the expression of LAT1 gene in several types of cancer cells. However, this regulatory relationship has not been investigated yet in colorectal cancer (CRC), one of the cancer types in which the increased LAT1 expression holds prognostic significance. In this study, we found that neither LAT1 mRNA nor protein is induced under hypoxic condition (1% O2) in CRC HT-29 cells in vitro, regardless of the prominent HIF-1/2α accumulation and HIFs-dependent upregulation of glucose transporter 1. The hypoxic treatment generally did not increase either the mRNA or protein expression of LAT1 in eight CRC cell lines tested, in contrast to the pronounced upregulation by amino acid restriction. Interestingly, knockdown of von Hippel-Lindau ubiquitin ligase to inhibit the proteasomal degradation of HIFs caused an accumulation of HIF-2α and increased the LAT1 expression in certain CRC cell lines. This study contributes to delineating the molecular mechanisms responsible for the pathological expression of LAT1 in CRC cells, emphasizing the ambiguity of HIFs-dependent transcriptional upregulation of LAT1 across cancer cells.
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Affiliation(s)
- Ryuichi Ohgaki
- Department of Bio-System Pharmacology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Osaka, 565-0871, Japan.
| | - Yuma Hirase
- Department of Bio-System Pharmacology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Minhui Xu
- Department of Bio-System Pharmacology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hiroki Okanishi
- Department of Bio-System Pharmacology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshikatsu Kanai
- Department of Bio-System Pharmacology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Osaka, 565-0871, Japan.
- Department of Metabolic Reprogramming and Signal Regulation, Premium Research Institute for Human Metaverse Medicine (WPI-PRIMe), Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
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37
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Aderinto N, Olatunji G, Kokori E, Sanker V, Yusuf IA, Adefusi TO, Egbunu E, Aboje JE, Apampa OO, Ogieuhi IJ, Obasanjo OM, Awuah WA. miR-210 in ischaemic stroke: biomarker potential, challenges and future perspectives. Eur J Med Res 2024; 29:432. [PMID: 39180099 PMCID: PMC11342498 DOI: 10.1186/s40001-024-02029-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 08/17/2024] [Indexed: 08/26/2024] Open
Abstract
Ischaemic stroke, a leading cause of global morbidity and mortality, necessitates effective biomarkers for enhanced diagnostic and prognostic stratification. MicroRNAs (miRNAs), particularly miR-210, have emerged as promising candidates due to their intricate regulatory roles in cellular responses to hypoxia and neuroprotective effects. This study explores the potential of miR-210 as a biomarker for ischaemic stroke, considering its expression patterns, regulatory functions and diagnostic/prognostic implications. A literature search was conducted on PubMed, Scopus, Google Scholar and Web of Science to identify studies focusing on miR-210 in ischaemic stroke. Inclusion criteria comprised reports on miR-210 expression in ischaemic stroke patients, excluding non-English studies, reviews, commentaries and conference abstracts lacking primary data. Studies investigating miR-210 levels in ischaemic stroke patients revealed significant alterations in expression patterns compared to healthy controls. Diagnostic potential was explored, indicating miR-210's sensitivity and specificity in distinguishing ischaemic stroke from other neurological conditions. Prognostic value was evident through associations with infarct size, functional outcomes and long-term survival. Challenges included variability in miR-210 levels, limited diagnostic specificity, absence of standardised assays and concerns regarding cost-effectiveness and accessibility. While miR-210 holds promise as an ischaemic stroke biomarker, challenges must be addressed for its successful integration into clinical practice. Standardised reference ranges, validation studies in diverse populations and collaborative efforts for assay standardisation are crucial. Despite challenges, miR-210's diagnostic and prognostic potential, particularly in predicting therapeutic responses, suggests a significant role in advancing ischaemic stroke management.
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Affiliation(s)
- Nicholas Aderinto
- Department of Medicine, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
- Department of Medicine and Surgery, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
| | - Gbolahan Olatunji
- Department of Medicine and Surgery, University of Ilorin, Ilorin, Nigeria
| | - Emmanuel Kokori
- Department of Medicine and Surgery, University of Ilorin, Ilorin, Nigeria
| | - Vivek Sanker
- Department of Neurosurgery, Trivandrum Medical College, Thiruvananthapuram, Kerala, India
| | - Ismaila Ajayi Yusuf
- Department of Medicine and Surgery, Obafemi Awolowo University Teaching Hospital, Ife, Nigeria
| | | | | | - John Ehi Aboje
- College of Health Sciences, Benue State University, Benue, Nigeria
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38
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Balnis J, Tufts A, Jackson EL, Drake LA, Singer DV, Lacomis D, Lee CG, Elias JA, Doles JD, Maher LJ, Jen A, Coon JJ, Jourd’heuil D, Singer HA, Vincent CE, Jaitovich A. Succinate dehydrogenase-complex II regulates skeletal muscle cellular respiration and contractility but not muscle mass in genetically induced pulmonary emphysema. SCIENCE ADVANCES 2024; 10:eado8549. [PMID: 39167644 PMCID: PMC11338223 DOI: 10.1126/sciadv.ado8549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 07/16/2024] [Indexed: 08/23/2024]
Abstract
Reduced skeletal muscle mass and oxidative capacity coexist in patients with pulmonary emphysema and are independently associated with higher mortality. If reduced cellular respiration contributes to muscle atrophy in that setting remains unknown. Using a mouse with genetically induced pulmonary emphysema that recapitulates muscle dysfunction, we found that reduced activity of succinate dehydrogenase (SDH) is a hallmark of its myopathic changes. We generated an inducible, muscle-specific SDH knockout mouse that demonstrates lower mitochondrial oxygen consumption, myofiber contractility, and exercise endurance. Respirometry analyses show that in vitro complex I respiration is unaffected by loss of SDH subunit C in muscle mitochondria, which is consistent with the pulmonary emphysema animal data. SDH knockout initially causes succinate accumulation associated with a down-regulated transcriptome but modest proteome effects. Muscle mass, myofiber type composition, and overall body mass constituents remain unaltered in the transgenic mice. Thus, while SDH regulates myofiber respiration in experimental pulmonary emphysema, it does not control muscle mass or other body constituents.
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Affiliation(s)
- Joseph Balnis
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY, USA
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - Ankita Tufts
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY, USA
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - Emily L. Jackson
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY, USA
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - Lisa A. Drake
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY, USA
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - Diane V. Singer
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - David Lacomis
- Departments of Pathology and Neurology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Chun Geun Lee
- Department of Molecular Microbiology and Immunology, Brown University, Providence, RI, USA
| | - Jack A. Elias
- Department of Molecular Microbiology and Immunology, Brown University, Providence, RI, USA
| | - Jason D. Doles
- Department of Anatomy, Cell Biology, and Physiology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - L. James Maher
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Annie Jen
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, WI, USA
| | - Joshua J. Coon
- Department of Biomolecular Chemistry, University of Wisconsin, Madison, WI, USA
- Morgridge Institute for Research, Madison, WI, USA
| | - David Jourd’heuil
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | - Harold A. Singer
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
| | | | - Ariel Jaitovich
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY, USA
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
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39
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Liu Y, Li H. L-leucine promotes the synthesis of milk protein and milk fat in bovine mammary epithelial cells through the AKT/mTOR signaling pathway under hypoxic conditions. J Nutr Biochem 2024; 134:109732. [PMID: 39117078 DOI: 10.1016/j.jnutbio.2024.109732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 07/31/2024] [Accepted: 08/04/2024] [Indexed: 08/10/2024]
Abstract
Hypoxia stress has been demonstrated to impede animal embryonic development, spermatogenesis, and lactation, leading to decreased animal production performance. However, the impact of hypoxia-induced activation of hypoxia inducible factor-1 (HIF-1) signaling on milk protein and fat synthesis remains unclear. L-leucine, a branched-chain amino acid, is known to modulate milk protein and fat synthesis. Therefore, our study aimed to evaluate the effect of L-leucine on milk protein and fat synthesis under hypoxic conditions and shed light on the molecular mechanism using an in vitro model. The results indicated that hypoxia treatment significantly decreased the synthesis of α-casein and β-casein, as well as inhibited factors related to milk fat synthesis in bovine mammary epithelial cells (MAC-T). Additionally, hypoxia stress suppressed the activities of the mammalian target of rapamycin (mTOR) and protein kinase B (AKT). Interfering with HIF-1α significantly reversed the expression of AKT, mTOR and factors related to milk synthesis. Importantly, supplementation with L-leucine activated AKT/mTOR signaling, thereby enhancing milk protein and fat synthesis in MAC-T cells to some extent. In conclusion, these findings suggest that HIF-1 signaling plays an important role in milk synthesis and that L-leucine may stimulate the synthesis of milk protein and fat by activating the AKT/mTOR signaling pathway under hypoxic conditions, making it a potential additive for promoting milk synthesis inhibited by hypoxia.
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Affiliation(s)
- Yuan Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Huixia Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
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Yang S, Zhan Q, Su D, Cui X, Zhao J, Wang Q, Hong B, Ju J, Cheng C, Yang E, Kang C. HIF1α/ATF3 partake in PGK1 K191/K192 succinylation by modulating P4HA1/succinate signaling in glioblastoma. Neuro Oncol 2024; 26:1405-1420. [PMID: 38441561 PMCID: PMC11300026 DOI: 10.1093/neuonc/noae040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024] Open
Abstract
BACKGROUND Hypoxia is a pathological hallmark in most cancers, including glioblastoma (GBM). Hypoxic signaling activation and post-translational modification (PTM) of oncogenic proteins are well-studied in cancers. Accumulating studies indicate glycolytic enzyme PGK1 plays a crucial role in tumorigenesis, yet the underlying mechanisms remain unknown. METHODS We first used ChIP assays to uncover the crosstalk between HIF1α and ATF3 and their roles in P4HA1 regulation. Protein degradation analysis, LC-MS/MS, and in vitro succinate production assays were performed to examine the effect of protein succinylation on GBM pathology. Seahorse assay measured the effects of PGK1 succinylation at K191/K192 or its mutants on glucose metabolism. We utilized an in vivo intracranial mouse model for biochemical studies to elucidate the impact of ATF3 and P4HA1 on aerobic glycolysis and the tumor immune microenvironment. RESULTS We demonstrated that HIF1α and ATF3 positively and negatively regulate the transcription of P4HA1, respectively, leading to an increased succinate production and increased activation of HIF1α signaling. P4HA1 expression elevated the succinate concentration, resulting in the enhanced succinylation of PGK1 at the K191 and K192 sites. Inhibition of proteasomal degradation of PGK1 by succinylation significantly increased aerobic glycolysis to generate lactate. Furthermore, ATF3 overexpression and P4HA1 knockdown reduced succinate and lactate levels in GBM cells, inhibiting immune responses and tumor growth. CONCLUSIONS Together, our study demonstrates that HIF1α/ATF3 participated in P4HA1/succinate signaling, which is the major regulator of succinate biosynthesis and PGK1 succinylation at K191 and K192 sites in GBM. The P4HA1/succinate pathway might be a novel and promising target for aerobic glycolysis in GBM.
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Affiliation(s)
- Shixue Yang
- Laboratory of Neuro-oncology, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-Neuro Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Qi Zhan
- Laboratory of Neuro-oncology, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-Neuro Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Dongyuan Su
- Laboratory of Neuro-oncology, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-Neuro Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Xiaoteng Cui
- Laboratory of Neuro-oncology, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-Neuro Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Jixing Zhao
- Laboratory of Neuro-oncology, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-Neuro Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Qixue Wang
- Laboratory of Neuro-oncology, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-Neuro Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Biao Hong
- Laboratory of Neuro-oncology, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-Neuro Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Jiasheng Ju
- Laboratory of Neuro-oncology, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-Neuro Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Chunchao Cheng
- Laboratory of Neuro-oncology, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-Neuro Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
| | - Eryan Yang
- Department of Gynecology and Obstetrics, Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin Medical University General Hospital, Tianjin, China
| | - Chunsheng Kang
- Laboratory of Neuro-oncology, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Key Laboratory of Post-Neuro Injury Neuro-Repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, China
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Izquierdo-Bermejo S, Chamorro B, Martín-de-Saavedra MD, Lobete M, López-Muñoz F, Marco-Contelles J, Oset-Gasque MJ. In Vitro Modulation of Autophagy by New Antioxidant Nitrones as a Potential Therapeutic Approach for the Treatment of Ischemic Stroke. Antioxidants (Basel) 2024; 13:946. [PMID: 39199193 PMCID: PMC11351736 DOI: 10.3390/antiox13080946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/27/2024] [Accepted: 07/30/2024] [Indexed: 09/01/2024] Open
Abstract
Stroke is a leading cause of death worldwide, yet current therapeutic strategies remain limited. Among the neuropathological events underlying this disease are multiple cell death signaling cascades, including autophagy. Recent interest has focused on developing agents that target molecules involved in autophagy to modulate this process under pathological conditions. This study aimed to analyze the role of autophagy in cell death induced by an in vitro ischemia-reperfusion (IR) model and to determine whether nitrones, known for their neuroprotective and antioxidant effects, could modulate this process. We focused on key proteins involved in different phases of autophagy: HIF-1α, BNIP3, and BECN1 for induction and nucleation, LC3 for elongation, and p62 for degradation. Our findings confirmed that the IR model promotes autophagy, initially via HIF-1α activation. Additionally, the neuroprotective effect of three of the selected synthetic nitrones (quinolylnitrones QN6 and QN23, and homo-bis-nitrone HBN6) partially derives from their antiautophagic properties, demonstrated by a downregulation of the expression of molecular markers involved in various phases of autophagy. In contrast, the neuroprotective power of cholesteronitrone ChN2 seems to derive from its promoting effects on the initial phases of autophagy, which could potentially help inhibit other forms of cell death. These results underscore the importance of autophagy modulation in neuroprotection, highlighting the potential of inhibiting prodeath autophagy and promoting prosurvival autophagy as promising therapeutic approaches in treating ischemic stroke clinically.
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Affiliation(s)
- Sara Izquierdo-Bermejo
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, Ciudad Universitaria, 28040 Madrid, Spain; (S.I.-B.); (B.C.); (M.D.M.-d.-S.); (M.L.)
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, 28040 Madrid, Spain
- Faculty of Health Sciences—HM Hospitals, Camilo José Cela University, Villafranca del Castillo, 28692 Madrid, Spain;
| | - Beatriz Chamorro
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, Ciudad Universitaria, 28040 Madrid, Spain; (S.I.-B.); (B.C.); (M.D.M.-d.-S.); (M.L.)
- Faculty of Health Sciences—HM Hospitals, Camilo José Cela University, Villafranca del Castillo, 28692 Madrid, Spain;
| | - María Dolores Martín-de-Saavedra
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, Ciudad Universitaria, 28040 Madrid, Spain; (S.I.-B.); (B.C.); (M.D.M.-d.-S.); (M.L.)
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, 28040 Madrid, Spain
- Instituto Universitario de Investigación en Neuroquímica, Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain
| | - Miguel Lobete
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, Ciudad Universitaria, 28040 Madrid, Spain; (S.I.-B.); (B.C.); (M.D.M.-d.-S.); (M.L.)
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, 28040 Madrid, Spain
| | - Francisco López-Muñoz
- Faculty of Health Sciences—HM Hospitals, Camilo José Cela University, Villafranca del Castillo, 28692 Madrid, Spain;
- HM Hospitals Health Research Institute, 28015 Madrid, Spain
- Neuropsychopharmacology Unit, “Hospital 12 de Octubre” Research Institute, 28041 Madrid, Spain
| | - José Marco-Contelles
- Laboratory of Medicinal Chemistry, Institute of Organic Chemistry (CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain;
- Center for Biomedical Network Research on Rare Diseases (CIBERER), Carlos III Health Institute (ISCIII), 28029 Madrid, Spain
| | - María Jesús Oset-Gasque
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Complutense University of Madrid, Plaza Ramón y Cajal s/n, Ciudad Universitaria, 28040 Madrid, Spain; (S.I.-B.); (B.C.); (M.D.M.-d.-S.); (M.L.)
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, 28040 Madrid, Spain
- Instituto Universitario de Investigación en Neuroquímica, Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain
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Di Mattia M, Sallese M, Neri M, Lopetuso LR. Hypoxic Functional Regulation Pathways in the GI Tract: Focus on the HIF-1α and Microbiota's Crosstalk. Inflamm Bowel Dis 2024; 30:1406-1418. [PMID: 38484200 DOI: 10.1093/ibd/izae046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Indexed: 08/02/2024]
Abstract
Hypoxia is an essential gastrointestinal (GI) tract phenomenon that influences both physiologic and pathologic states. Hypoxia-inducible factors (HIFs), the primary drivers of cell adaptation to low-oxygen environments, have been identified as critical regulators of gut homeostasis: directly, through the induction of different proteins linked to intestinal barrier stabilization (ie, adherent proteins, tight junctions, mucins, integrins, intestinal trefoil factor, and adenosine); and indirectly, through the regulation of several immune cell types and the modulation of autophagy and inflammatory processes. Furthermore, hypoxia and HIF-related sensing pathways influence the delicate relationship existing between bacteria and mammalian host cells. In turn, gut commensals establish and maintain the physiologic hypoxia of the GI tract and HIF-α expression. Based on this premise, the goals of this review are to (1) highlight hypoxic molecular pathways in the GI tract, both in physiologic and pathophysiologic settings, such as inflammatory bowel disease; and (2) discuss a potential strategy for ameliorating gut-related disorders, by targeting HIF signaling, which can alleviate inflammatory processes, restore autophagy correct mechanisms, and benefit the host-microbiota equilibrium.
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Affiliation(s)
- Miriam Di Mattia
- Department of Medicine and Ageing Sciences, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Michele Sallese
- Department of Medicine and Ageing Sciences, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Matteo Neri
- Department of Medicine and Ageing Sciences, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Loris Riccardo Lopetuso
- Department of Medicine and Ageing Sciences, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology, Gabriele d'Annunzio University of Chieti-Pescara, Chieti, Italy
- Medicina Interna e Gastroenterologia, CEMAD Centro Malattie dell'Apparato Digerente, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario Gemelli IRCCS, Rome, Italy
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Ni X, Lu CP, Xu GQ, Ma JJ. Transcriptional regulation and post-translational modifications in the glycolytic pathway for targeted cancer therapy. Acta Pharmacol Sin 2024; 45:1533-1555. [PMID: 38622288 PMCID: PMC11272797 DOI: 10.1038/s41401-024-01264-1] [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: 10/19/2023] [Accepted: 03/08/2024] [Indexed: 04/17/2024] Open
Abstract
Cancer cells largely rely on aerobic glycolysis or the Warburg effect to generate essential biomolecules and energy for their rapid growth. The key modulators in glycolysis including glucose transporters and enzymes, e.g. hexokinase 2, enolase 1, pyruvate kinase M2, lactate dehydrogenase A, play indispensable roles in glucose uptake, glucose consumption, ATP generation, lactate production, etc. Transcriptional regulation and post-translational modifications (PTMs) of these critical modulators are important for signal transduction and metabolic reprogramming in the glycolytic pathway, which can provide energy advantages to cancer cell growth. In this review we recapitulate the recent advances in research on glycolytic modulators of cancer cells and analyze the strategies targeting these vital modulators including small-molecule inhibitors and microRNAs (miRNAs) for targeted cancer therapy. We focus on the regulation of the glycolytic pathway at the transcription level (e.g., hypoxia-inducible factor 1, c-MYC, p53, sine oculis homeobox homolog 1, N6-methyladenosine modification) and PTMs (including phosphorylation, methylation, acetylation, ubiquitination, etc.) of the key regulators in these processes. This review will provide a comprehensive understanding of the regulation of the key modulators in the glycolytic pathway and might shed light on the targeted cancer therapy at different molecular levels.
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Affiliation(s)
- Xuan Ni
- Department of Pharmacy, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou, 215123, China
| | - Cheng-Piao Lu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Key Laboratory of Drug Research for Prevention and Treatment of Hyperlipidemic Diseases, Soochow University, Suzhou, 215123, China
| | - Guo-Qiang Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Key Laboratory of Drug Research for Prevention and Treatment of Hyperlipidemic Diseases, Soochow University, Suzhou, 215123, China.
- Suzhou International Joint Laboratory for Diagnosis and Treatment of Brain Diseases, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
- MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, 215123, China.
| | - Jing-Jing Ma
- Department of Pharmacy, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou, 215123, China.
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Liu J, Gao Y, Zhang X. A patent review on hypoxia-inducible factor (HIF) modulators (2021-2023). Expert Opin Ther Pat 2024; 34:651-664. [PMID: 38874005 DOI: 10.1080/13543776.2024.2368739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 06/12/2024] [Indexed: 06/15/2024]
Abstract
INTRODUCTION Hypoxia-inducible factor (HIF) is a central regulatory factor in detecting and adapting to cellular oxygen stress. Dysregulation of HIF is associated with various human diseases. Seven HIF modulators, including six prolyl hydroxylase (PHD) inhibitors and one HIF-2α inhibitor, have already been approved for the treatment of renal anemia and cancer, respectively. AREAS COVERED This review summarizes HIF modulators patented in the 2021-2023 period. This review provides an overview of HIF downregulators, including HIF-1α inhibitors, HIF-2α inhibitors, and HIF-2α degraders, as well as HIF upregulators, including PHD, FIH, and VHL inhibitors, and HIF-2α and HIF-3α agonists. EXPERT OPINION Efforts should be made to address the adverse clinical effects associated with approved HIF-modulating drugs, including PHD inhibitors and HIF-2α inhibitors. Identification of the specific buried cavity in the HIF-2α and an opened pocket in HIF-3α offer an avenue for designing novel modulators for HIF-2α or HIF-3α. Given the similarities observed in the binding cavities of HIF-2α and HIF-3α, it should be considered whether the approved HIF-2α inhibitors also inhibit HIF-3α. A comprehensive understanding of the HIF signaling pathway biology would lead to the development of novel small-molecule HIF modulators as innovative therapeutic approaches for a wide range of human diseases.
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Affiliation(s)
| | - Yinli Gao
- Jiangsu Key Laboratory of Drug Design and Optimization, and Department of Chemistry, China Pharmaceutical University, Nanjing, China
| | - Xiaojin Zhang
- Jiangsu Key Laboratory of Drug Design and Optimization, and Department of Chemistry, China Pharmaceutical University, Nanjing, China
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Ghabra S, Ramamoorthy B, Andrews SG, Sadowski SM. Surgical Management and Long-Term Evaluation of Pancreatic Neuroendocrine Tumors. Surg Clin North Am 2024; 104:891-908. [PMID: 38944507 PMCID: PMC11214659 DOI: 10.1016/j.suc.2024.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2024]
Abstract
Pancreatic neuroendocrine tumors (PNETs) arise from neuroendocrine cells and are a rare class of heterogenous tumors with increasing incidence. The diagnosis, staging, treatment, and prognosis of PNETs depend heavily on identifying the histologic features and biological mechanisms. Here, the authors provide an overview of the diagnostic workup (biomarkers and imaging), grade, and staging of PNETs. The authors also explore associated genetic mutations and molecular pathways and describe updated guidelines on surgical and systemic treatment modalities.
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Affiliation(s)
- Shadin Ghabra
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA. https://twitter.com/ShadinGhabra_MD
| | - Bhavishya Ramamoorthy
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Stephen G Andrews
- Neuroendocrine Cancer Therapy Section, Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Building 10 CRC, Room 4-5932, Bethesda, MD 20892, USA. https://twitter.com/AndrewsStephenG
| | - Samira M Sadowski
- Neuroendocrine Cancer Therapy Section, Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Building 10 CRC, Room 4-5932, Bethesda, MD 20892, USA.
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Zhang S, Lock MC, Tie M, McMillen IC, Botting KJ, Morrison JL. Cardiac programming in the placentally restricted sheep fetus in early gestation. J Physiol 2024; 602:3815-3832. [PMID: 38975864 DOI: 10.1113/jp286702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 06/13/2024] [Indexed: 07/09/2024] Open
Abstract
Fetal growth restriction (FGR) occurs in 8% of human pregnancies, and the growth restricted newborn is at a greater risk of developing heart disease in later adult life. In sheep, experimental restriction of placental growth (PR) from conception results in FGR, a decrease in cardiomyocyte endowment and an upregulation of pathological hypertrophic signalling in the fetal heart in late gestation. However, there is no change in the expression of markers of cellular proliferation nor in the level of cardiomyocyte apoptosis in the heart of the PR fetus in late gestation. This suggests that FGR arises early in gestation and programs a decrease in cardiomyocyte endowment in early, rather than late, gestation. Here, control and PR fetal sheep were humanely killed at 55 days' gestation (term, 150 days). Fetal body and heart weight were lower in PR compared with control fetuses and there was evidence of sparing of fetal brain growth. While there was no change in the proportion of cardiomyocytes that were proliferating in the early gestation PR heart, there was an increase in measures of apoptosis, and markers of autophagy and pathological hypertrophy in the PR fetal heart. These changes in early gestation highlight that FGR is associated with evidence of early cell death and compensatory hypertrophic responses of cardiomyocytes in the fetal heart. The data suggest that early placental restriction results in a decrease in the pool of proliferative cardiomyocytes in early gestation, which would limit cardiomyocyte endowment in the heart of the PR fetus in late gestation. KEY POINTS: Placental restriction leading to fetal growth restriction (FGR) and chronic fetal hypoxaemia in sheep results in a decrease in cardiomyocyte endowment in late gestation. FGR did not change cardiomyocyte proliferation during early gestation but did result in increased apoptosis and markers of autophagy in the fetal heart, which may result in the decreased endowment of cardiomyocytes observed in late gestation. FGR in early gestation also results in increased hypoxia inducible factor signalling in the fetal heart, which in turn may result in the altered expression of epigenetic regulators, increased expression of insulin-like growth factor 2 and cardiomyocyte hypertrophy during late gestation and after birth.
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Affiliation(s)
- Song Zhang
- Early Origins of Adult Health Research Group, Health and Biomedical Innovation, UniSA: Clinical and Health Science, University of South Australia, Adelaide, SA, Australia
| | - Mitchell C Lock
- Early Origins of Adult Health Research Group, Health and Biomedical Innovation, UniSA: Clinical and Health Science, University of South Australia, Adelaide, SA, Australia
| | - Michelle Tie
- Early Origins of Adult Health Research Group, Health and Biomedical Innovation, UniSA: Clinical and Health Science, University of South Australia, Adelaide, SA, Australia
| | - I Caroline McMillen
- Early Origins of Adult Health Research Group, Health and Biomedical Innovation, UniSA: Clinical and Health Science, University of South Australia, Adelaide, SA, Australia
| | - Kimberley J Botting
- Early Origins of Adult Health Research Group, Health and Biomedical Innovation, UniSA: Clinical and Health Science, University of South Australia, Adelaide, SA, Australia
| | - Janna L Morrison
- Early Origins of Adult Health Research Group, Health and Biomedical Innovation, UniSA: Clinical and Health Science, University of South Australia, Adelaide, SA, Australia
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Petrovicz VL, Pasztuhov I, Martinek TA, Hegedüs Z. Site-directed allostery perturbation to probe the negative regulation of hypoxia inducible factor-1α. RSC Chem Biol 2024; 5:711-720. [PMID: 39092442 PMCID: PMC11289882 DOI: 10.1039/d4cb00066h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 05/27/2024] [Indexed: 08/04/2024] Open
Abstract
The interaction between the intrinsically disordered transcription factor HIF-1α and the coactivator proteins p300/CBP is essential in the fast response to low oxygenation. The negative feedback regulator, CITED2, switches off the hypoxic response through a very efficient irreversible mechanism. The negative cooperativity with HIF-1α relies on the formation of a ternary intermediate that leads to allosteric structural changes in p300/CBP, in which the cooperative folding/binding of the CITED2 sequence motifs plays a key role. Understanding the contribution of a binding motif to the structural changes in relation to competition efficiency provides invaluable insights into the molecular mechanism. Our strategy is to site-directedly perturb the p300-CITED2 complex's structure without significantly affecting binding thermodynamics. In this way, the contribution of a sequence motif to the negative cooperativity with HIF-1α would mainly depend on the induced structural changes, and to a lesser extent on binding affinity. Using biophysical assays and NMR measurements, we show here that the interplay between the N-terminal tail and the rest of the binding motifs of CITED2 is crucial for the unidirectional displacement of HIF-1α. We introduce an advantageous approach for evaluating the roles of the different sequence parts with the help of motif-by-motif backbone perturbations.
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Affiliation(s)
- Vencel L Petrovicz
- University of Szeged, Department of Medical Chemistry 8 Dóm tér Szeged 6720 Hungary
| | - István Pasztuhov
- University of Szeged, Department of Medical Chemistry 8 Dóm tér Szeged 6720 Hungary
| | - Tamás A Martinek
- University of Szeged, Department of Medical Chemistry 8 Dóm tér Szeged 6720 Hungary
- HUN-REN SZTE Biomimetic Systems Research Group 8 Dóm tér Szeged 6720 Hungary
| | - Zsófia Hegedüs
- University of Szeged, Department of Medical Chemistry 8 Dóm tér Szeged 6720 Hungary
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Mabry AR, Singh A, Mulrooney B, Gorman J, Thielbar AR, Wolf ER, Mayo LD. Induction of the Mdm2 gene and protein by kinase signaling pathways is repressed by the pVHL tumor suppressor. Proc Natl Acad Sci U S A 2024; 121:e2400935121. [PMID: 39047034 PMCID: PMC11295014 DOI: 10.1073/pnas.2400935121] [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: 01/15/2024] [Accepted: 06/14/2024] [Indexed: 07/27/2024] Open
Abstract
The tumor suppressor von Hippel-Lindau, pVHL, is a multifaceted protein. One function is to dock to the hypoxia-inducible transcription factor (HIF) and recruit a larger protein complex that destabilizes HIF via ubiquitination, preventing angiogenesis and tumor development. pVHL also binds to the tumor suppressor p53 to activate specific p53 target genes. The oncogene Mdm2 impairs the formation of the p53-pVHL complex and activation of downstream genes by conjugating nedd8 to pVHL. While Mdm2 can impact p53 and pVHL, how pVHL may impact Mdm2 is unclear. Like p53 somatic mutations, point mutations are evident in pVHL that are common in renal clear cell carcinomas (RCC). In patients with RCC, Mdm2 levels are elevated, and we examined whether there was a relationship between Mdm2 and pVHL. TCGA and DepMap analysis revealed that mdm2 gene expression was elevated in RCC with vhl point mutations or copy number loss. In pVHL reconstituted or deleted isogenetically match RCC or MEF cell lines, Mdm2 was decreased in the presence of pVHL. Furthermore, through analysis using genetic and pharmacological approaches, we show that pVHL represses Mdm2 gene expression by blocking the MAPK-Ets signaling pathway and blocks Akt-mediated phosphorylation and stabilization of Mdm2. Mdm2 inhibition results in an increase in the p53-p21 pathway to impede cell growth. This finding shows how pVHL can indirectly impact the function of Mdm2 by regulating signaling pathways to restrict cell growth.
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Affiliation(s)
- Alexander R. Mabry
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University, Indianapolis, IN46022
- Indiana University School of Medicine, Indianapolis, IN46022
- Indiana University Indianapolis, Indianapolis, IN46022
| | - Arnima Singh
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University, Indianapolis, IN46022
- Indiana University School of Medicine, Indianapolis, IN46022
- Indiana University Indianapolis, Indianapolis, IN46022
| | - Brianna Mulrooney
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University, Indianapolis, IN46022
- Indiana University School of Medicine, Indianapolis, IN46022
- Indiana University Indianapolis, Indianapolis, IN46022
| | - James Gorman
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University, Indianapolis, IN46022
- Indiana University School of Medicine, Indianapolis, IN46022
- Indiana University Indianapolis, Indianapolis, IN46022
| | - Abigail R. Thielbar
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University, Indianapolis, IN46022
- Indiana University School of Medicine, Indianapolis, IN46022
- Indiana University Indianapolis, Indianapolis, IN46022
| | - Eric R. Wolf
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University, Indianapolis, IN46022
- Indiana University School of Medicine, Indianapolis, IN46022
- Indiana University Indianapolis, Indianapolis, IN46022
- Department of Biochemistry and Molecular Biology, Indiana University, Indianapolis, IN46022
| | - Lindsey D. Mayo
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University, Indianapolis, IN46022
- Indiana University School of Medicine, Indianapolis, IN46022
- Indiana University Indianapolis, Indianapolis, IN46022
- Department of Biochemistry and Molecular Biology, Indiana University, Indianapolis, IN46022
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49
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Deng Q, Gao Y, Wang Y, Mao J, Yan Y, Yang Z, Cong Y, Yang Y, Wan S. LSD1 inhibition by tranylcypromine hydrochloride reduces alkali burn-induced corneal neovascularization and ferroptosis by suppressing HIF-1α pathway. Front Pharmacol 2024; 15:1411513. [PMID: 39130627 PMCID: PMC11316257 DOI: 10.3389/fphar.2024.1411513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 07/09/2024] [Indexed: 08/13/2024] Open
Abstract
Background Corneal neovascularization (CNV) is a sight-threatening condition that necessitates epigenetic control. The role of lysine-specific demethylase 1 (LSD1) in CNV remains unclear, despite its established significance in tumor angiogenesis regulation. Methods An alkali burn-induced CNV mouse model was used in vivo. The effects of LSD1 inhibitor tranylcypromine hydrochloride (TCP) were examined through slit lamp, histological staining, and immunofluorescence. The expression of malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione (GSH) levels were assessed in corneal tissues. Oxidative stress and ferrous ion expression during CNV were determined using 4-HNE, GPX4, and FerroOrange staining. In vitro, a hypoxia-reoxygenation (H/R) model was established using human umbilical vein endothelial cells (HUVECs) to study LSD1 or hypoxia-inducible factor (HIF-1α) knockdown and lentiviral overexpression of HIF-1α. The effects on HUVECs migration, invasion, and angiogenesis were evaluated through cell scratching assay, transwell migration assay and tube formation assay. The role of ferroptosis was investigated using ROS staining, FerroOrange staining, and key ferroptosis proteins. Further, The JAK2/STAT3 pathway's involvement in CNV regulation was explored through in vivo experiments with subconjunctival injection of AG490. Results The results showed a substantial correlation between corneal damage and LSD1 levels. In addition, HIF-1α expression was also elevated after alkali burns, and subconjunctival injection of TCP reduced corneal inflammation and neovascularization. Corneal alkali burns increased ROS levels and reduced antioxidative stress indicators, accompanied by elevated ferrous ion levels, which were reversed by TCP injection. In vitro, TCP or siRNAs inhibited H/R-induced ferroptosis and angiogenesis in HUVECs by affecting specific protein expressions and MDA, SOD, and GSH levels. HIF-1α levels, associated with ROS production, ferroptosis, and angiogenesis, increased during H/R, but were reversed by TCP or siRNA administration. HIF-1α overexpression counteracted the effects of LSD1 inhibition. Additionally, AG490 injection effectively reduced HIF-1α and VEGFA expression in the CNV model. Discussion These findings suggest that LSD1 inhibition via the HIF-1α-driven pathway prevents angiogenesis, oxidative stress, and ferroptosis in corneal alkali burn-induced CNV, highlighting LSD1 as a potential therapeutic target.
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Affiliation(s)
| | | | | | | | | | | | | | - Yanning Yang
- Department of Ophthalmology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Shanshan Wan
- Department of Ophthalmology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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Ting KKY. Revisiting the role of hypoxia-inducible factors and nuclear factor erythroid 2-related factor 2 in regulating macrophage inflammation and metabolism. Front Cell Infect Microbiol 2024; 14:1403915. [PMID: 39119289 PMCID: PMC11306205 DOI: 10.3389/fcimb.2024.1403915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 07/11/2024] [Indexed: 08/10/2024] Open
Abstract
The recent birth of the immunometabolism field has comprehensively demonstrated how the rewiring of intracellular metabolism is critical for supporting the effector functions of many immune cell types, such as myeloid cells. Among all, the transcriptional regulation mediated by Hypoxia-Inducible Factors (HIFs) and Nuclear factor erythroid 2-related factor 2 (NRF2) have been consistently shown to play critical roles in regulating the glycolytic metabolism, redox homeostasis and inflammatory responses of macrophages (Mφs). Although both of these transcription factors were first discovered back in the 1990s, new advances in understanding their function and regulations have been continuously made in the context of immunometabolism. Therefore, this review attempts to summarize the traditionally and newly identified functions of these transcription factors, including their roles in orchestrating the key events that take place during glycolytic reprogramming in activated myeloid cells, as well as their roles in mediating Mφ inflammatory responses in various bacterial infection models.
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Affiliation(s)
- Kenneth K. Y. Ting
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
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