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Afrin F, Mateen S, Oman J, Lai JCK, Barrott JJ, Pashikanti S. Natural Products and Small Molecules Targeting Cellular Ceramide Metabolism to Enhance Apoptosis in Cancer Cells. Cancers (Basel) 2023; 15:4645. [PMID: 37760612 PMCID: PMC10527029 DOI: 10.3390/cancers15184645] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Molecular targeting strategies have been used for years in order to control cancer progression and are often based on targeting various enzymes involved in metabolic pathways. Keeping this in mind, it is essential to determine the role of each enzyme in a particular metabolic pathway. In this review, we provide in-depth information on various enzymes such as ceramidase, sphingosine kinase, sphingomyelin synthase, dihydroceramide desaturase, and ceramide synthase which are associated with various types of cancers. We also discuss the physicochemical properties of well-studied inhibitors with natural product origins and their related structures in terms of these enzymes. Targeting ceramide metabolism exhibited promising mono- and combination therapies at preclinical stages in preventing cancer progression and cemented the significance of sphingolipid metabolism in cancer treatments. Targeting ceramide-metabolizing enzymes will help medicinal chemists design potent and selective small molecules for treating cancer progression at various levels.
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Affiliation(s)
- Farjana Afrin
- Biomedical and Pharmaceutical Sciences, Kasiska Division of Health Sciences, College of Pharmacy, Idaho State University, Pocatello, ID 83209, USA; (F.A.); (S.M.); (J.O.); (J.C.K.L.)
| | - Sameena Mateen
- Biomedical and Pharmaceutical Sciences, Kasiska Division of Health Sciences, College of Pharmacy, Idaho State University, Pocatello, ID 83209, USA; (F.A.); (S.M.); (J.O.); (J.C.K.L.)
| | - Jordan Oman
- Biomedical and Pharmaceutical Sciences, Kasiska Division of Health Sciences, College of Pharmacy, Idaho State University, Pocatello, ID 83209, USA; (F.A.); (S.M.); (J.O.); (J.C.K.L.)
| | - James C. K. Lai
- Biomedical and Pharmaceutical Sciences, Kasiska Division of Health Sciences, College of Pharmacy, Idaho State University, Pocatello, ID 83209, USA; (F.A.); (S.M.); (J.O.); (J.C.K.L.)
| | - Jared J. Barrott
- Cell Biology and Physiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA;
| | - Srinath Pashikanti
- Biomedical and Pharmaceutical Sciences, Kasiska Division of Health Sciences, College of Pharmacy, Idaho State University, Pocatello, ID 83209, USA; (F.A.); (S.M.); (J.O.); (J.C.K.L.)
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Effects of the anti-inflammatory drug celecoxib on cell death signaling in human colon cancer. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:1171-1185. [PMID: 36692829 DOI: 10.1007/s00210-023-02399-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 01/16/2023] [Indexed: 01/25/2023]
Abstract
The anti-inflammatory drug celecoxib, the only inhibitor of cyclooxygenase-2 (COX-2) with anticancer activity, is used to treat rheumatoid arthritis and can cause endoplasmic reticulum (ER) stress by inhibiting sarco/ER Ca2 +-ATPase activity in cancer cells. This study aimed to investigate the correlation between celecoxib-induced ER stress and the effects of celecoxib against cell death signaling. Treatment of human colon cancer HCT116 cells with celecoxib reduced their viability and resulted in a loss of mitochondrial membrane potential ([Formula: see text]). Additionally, celecoxib treatment reduced the expression of genes involved in mitochondrial biogenesis and metabolism such as mitochondrial transcription factor A (TFAM) and uncoupling protein 2 (UCP2). Furthermore, celecoxib reduced transmembrane protein 117 (TMEM117), and RNAi-mediated knockdown of TMEM117 reduced TFAM and UCP2 expressions. These results suggest that celecoxib treatment results in the loss of [Formula: see text] by reducing TMEM117 expression and provide insights for the development of novel drugs through TMEM117 expression.
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Pan Z, Li SJ, Guo H, Li ZH, Fei X, Chang SM, Yang QC, Cheng DD. Ebastine exerts antitumor activity and induces autophagy by activating AMPK/ULK1 signaling in an IPMK-dependent manner in osteosarcoma. Int J Biol Sci 2023; 19:537-551. [PMID: 36632464 PMCID: PMC9830506 DOI: 10.7150/ijbs.69541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
Numerous studies have confirmed that in addition to interfering with the tumor inflammatory environment, anti-inflammatory agents can directly increase apoptosis and sensitivity to conventional therapies and decrease invasion and metastasis, making them useful candidates for cancer therapy. Here, we first used high-throughput screening and had screened one compound candidate, ebastine (a H1-histamine receptor antagonist), for osteosarcoma therapy. Cell viability assays, colony formation assays, wound healing assays, and Transwell assays demonstrated that ebastine elicited antitumor effects in osteosarcoma cells. In addition, ebastine treatment exerted obvious effects on cell cycle arrest, metastasis inhibition, apoptosis and autophagy induction both in vitro and in vivo. Mechanistically, we observed that ebastine treatment triggered proapoptotic autophagy by activating AMPK/ULK1 signaling in osteosarcoma cells. Treatment with the AMPK inhibitor dorsomorphin reversed ebastine-induced apoptosis and autophagy. More importantly, we found that IPMK interacted with AMPK and functioned as a positive regulator of AMPK protein in osteosarcoma cells. A rescue study showed that the induction of autophagy and activation of the AMPK/ULK1 signaling pathway by ebastine treatment were reversed by IPMK knockdown, indicating that the activity of ebastine was IPMK dependent. We provide experimental evidence demonstrating that ebastine has antitumor activity in osteosarcoma and promotes autophagy by activating the AMPK/ULK1 signaling pathway, which is IPMK dependent. Our results provide insight into the clinical application potential of ebastine, which may represent a new potential therapeutic candidate for the treatment of osteosarcoma.
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Affiliation(s)
- Zhen Pan
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Shi-jie Li
- Department of Orthopaedic Surgery, Yangpu Hospital, Tongji University School of Medicine, Shanghai, 200090, China
| | - Hua Guo
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Zhao-hui Li
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Xiang Fei
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Shi-min Chang
- Department of Orthopaedic Surgery, Yangpu Hospital, Tongji University School of Medicine, Shanghai, 200090, China
| | - Qing-cheng Yang
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.,✉ Corresponding author: Dong-dong Cheng, Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai, 200233, China. E-mail: ; Qing-cheng Yang, Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai, 200233, China. E-mail:
| | - Dong-dong Cheng
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.,✉ Corresponding author: Dong-dong Cheng, Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai, 200233, China. E-mail: ; Qing-cheng Yang, Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai, 200233, China. E-mail:
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Momchilova A, Nikolaev G, Pankov S, Vassileva E, Krastev N, Robev B, Krastev D, Pinkas A, Pankov R. Effect of Quercetin and Fingolimod, Alone or in Combination, on the Sphingolipid Metabolism in HepG2 Cells. Int J Mol Sci 2022; 23:ijms232213916. [PMID: 36430423 PMCID: PMC9697772 DOI: 10.3390/ijms232213916] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Combinations of anti-cancer drugs can overcome resistance to therapy and provide new more effective treatments. In this work we have analyzed the effect of the polyphenol quercetin and the anti-cancer sphingosine analog fingolimod on the sphingolipid metabolism in HepG2 cells, since sphingolipids are recognized as mediators of cell proliferation and apoptosis in cancer cells. Treatment of hepatocellular carcinoma HepG2 cells with quercetin and fingolimod, alone or in combination, induced different degrees of sphingomyelin (SM) reduction and a corresponding activation of neutral sphingomyelinase (nSMase). Western blot analysis showed that only treatments containing quercetin induced up-regulation of nSMase expression. The same treatment caused elevation of ceramide (CER) levels, whereas the observed alterations in sphingosine (SPH) content were not statistically significant. The two tested drugs induced a reduction of the pro-proliferative sphingolipid, sphingosine 1 phosphate (S1P), in the following order: quercetin, fingolimod, quercetin + fingolimod. The activity of the enzyme responsible for CER hydrolysis, alkaline ceramidase (ALCER) was down-regulated only in the incubations involving quercetin and fingolimod did not affect this activity. The enzyme, maintaining the balance between apoptosis and proliferation, sphingosine kinase 1 (SK1), was down-regulated by incubations in the following order: quercetin, fingolimod, quercetin + fingolimod. Western blot analysis showed down-regulation in SK1 expression upon quercetin but not upon fingolimod treatment. Studies on the effect of quercetin and fingolimod on the two proteins associated with apoptotic events, AKT and Bcl-2, showed that only quercetin, alone or in combination, down-regulated the activity of the two proteins. The reported observations provide information which can be useful in the search of novel anti-tumor approaches, aiming at optimization of the therapeutic effect and maximal preservation of healthy tissues.
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Affiliation(s)
- Albena Momchilova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
- Correspondence: ; Tel.: +359-2-9792686 or +359-898-238971
| | - Georgi Nikolaev
- Biological Faculty, Sofia University “St. Kliment Ohridki”, 8 Dragan Tzankov Str., 1164 Sofia, Bulgaria
| | - Stefan Pankov
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Evgenia Vassileva
- Clinic of Neurology, Tsaritsa Yoanna University Hospital-ISUL, 1527 Sofia, Bulgaria
| | - Nikolai Krastev
- Department of Anatomy, Histology and Embryology, Medical University-Sofia, Blvd. Sv. Georgi Sofiisky 1, 1431 Sofia, Bulgaria
| | - Bozhil Robev
- Department of Medical Oncology, University Multi-Profile Hospital for Active Treatment (UMHAT) “St. Ivan Rilski”, 1606 Sofia, Bulgaria
| | - Dimo Krastev
- Medical College “Y. Filaretova”, Medical University-Sofia, Yordanka Filaretova Str. 3, 1606 Sofia, Bulgaria
| | - Adriana Pinkas
- CSTEP, Office of Continuing Education, Suffolk County Community College 30 Greene Ave., Sayville, NY 11782, USA
| | - Roumen Pankov
- Biological Faculty, Sofia University “St. Kliment Ohridki”, 8 Dragan Tzankov Str., 1164 Sofia, Bulgaria
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Managing Cancer Drug Resistance from the Perspective of Inflammation. JOURNAL OF ONCOLOGY 2022; 2022:3426407. [PMID: 36245983 PMCID: PMC9553519 DOI: 10.1155/2022/3426407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 08/17/2022] [Indexed: 11/17/2022]
Abstract
The development of multidrug resistance in cancer chemotherapy is a major obstacle to the effective treatment of human malignant tumors. Several epidemiological studies have demonstrated that inflammation is closely related to cancer and plays a key role in the development of both solid and liquid tumors. Therefore, targeting inflammation and the molecules involved in the inflammatory process may be a good strategy for treating drug-resistant tumors. In this review, we discuss the molecular mechanisms underlying inflammation in regulating anticancer drug resistance by modulating drug action and drug-mediated cell death pathways. Inflammation alters the effectiveness of drugs through modulation of the expression of multidrug efflux transporters (e.g., ABCG2, ABCB1, and ABCC1) and drug-metabolizing enzymes (e.g., CYP1A2 and CYP3A4). In addition, inflammation can protect cancer cells from drug-mediated cell death by regulating DNA damage repair, downstream adaptive response (e.g., apoptosis, autophagy, and oncogenic bypass signaling), and tumor microenvironment. Intriguingly, manipulating inflammation may affect drug resistance through various molecular mechanisms validated by in vitro/in vivo models. In this review, we aim to summarize the underlying molecular mechanisms that inflammation participates in cancer drug resistance and discuss the potential clinical strategies targeting inflammation to overcome drug resistance.
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Momchilova A, Pankov R, Staneva G, Pankov S, Krastev P, Vassileva E, Hazarosova R, Krastev N, Robev B, Nikolova B, Pinkas A. Resveratrol Affects Sphingolipid Metabolism in A549 Lung Adenocarcinoma Cells. Int J Mol Sci 2022; 23:ijms231810870. [PMID: 36142801 PMCID: PMC9505893 DOI: 10.3390/ijms231810870] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 12/22/2022] Open
Abstract
Resveratrol is a naturally occurring polyphenol which has various beneficial effects, such as anti-inflammatory, anti-tumor, anti-aging, antioxidant, and neuroprotective effects, among others. The anti-cancer activity of resveratrol has been related to alterations in sphingolipid metabolism. We analyzed the effect of resveratrol on the enzymes responsible for accumulation of the two sphingolipids with highest functional activity—apoptosis promoting ceramide (CER) and proliferation-stimulating sphingosine-1-phosphate (S1P)—in human lung adenocarcinoma A549 cells. Resveratrol treatment induced an increase in CER and sphingosine (SPH) and a decrease in sphingomyelin (SM) and S1P. Our results showed that the most common mode of CER accumulation, through sphingomyelinase-induced hydrolysis of SM, was not responsible for a CER increase despite the reduction in SM in A549 plasma membranes. However, both the activity and the expression of CER synthase 6 were upregulated in resveratrol-treated cells, implying that CER was accumulated as a result of stimulated de novo synthesis. Furthermore, the enzyme responsible for CER hydrolysis, alkaline ceramidase, was not altered, suggesting that it was not related to changes in the CER level. The enzyme maintaining the balance between apoptosis and proliferation, sphingosine kinase 1 (SK1), was downregulated, and its expression was reduced, resulting in a decrease in S1P levels in resveratrol-treated lung adenocarcinoma cells. In addition, incubation of resveratrol-treated A549 cells with the SK1 inhibitors DMS and fingolimod additionally downregulated SK1 without affecting its expression. The present studies provide information concerning the biochemical processes underlying the influence of resveratrol on sphingolipid metabolism in A549 lung cancer cells and reveal possibilities for combined use of polyphenols with specific anti-proliferative agents that could serve as the basis for the development of complex therapeutic strategies.
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Affiliation(s)
- Albena Momchilova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl.21, 1113 Sofia, Bulgaria
- Correspondence: ; Tel.:+359-2-9792686 or +359-898-238971
| | - Roumen Pankov
- Biological Faculty, Sofia University “St. Kliment Ohridki”, 8, Dragan Tzankov Str., 1164 Sofia, Bulgaria
| | - Galya Staneva
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl.21, 1113 Sofia, Bulgaria
| | - Stefan Pankov
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl.21, 1113 Sofia, Bulgaria
| | - Plamen Krastev
- Cardiology Clinic, University Hospital “St. Ekaterina”, 1431 Sofia, Bulgaria
| | - Evgenia Vassileva
- Clinic of Neurology, Tsaritsa Yoanna University Hospital-ISUL, 1527 Sofia, Bulgaria
| | - Rusina Hazarosova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl.21, 1113 Sofia, Bulgaria
| | - Nikolai Krastev
- Department of Anatomy, Histology and Embryology, Medical University—Sofia, Blvd. Sv. Georgi Sofiisky 1, 1431 Sofia, Bulgaria
- Medical Center Relax, 8 Ami Bue Str., 1606 Sofia, Bulgaria
| | - Bozhil Robev
- Department of Medical Oncology, University Multi-Profile Hospital for Active Treatment (UMHAT) “St. Ivan Rilski”, 1606 Sofia, Bulgaria
| | - Biliana Nikolova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl.21, 1113 Sofia, Bulgaria
| | - Adriana Pinkas
- CSTEP, Office of Continuing Education, Suffolk County Community College 30 Greene Ave., Sayville, NY 11782, USA
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Naderbar L, Pazhang Y, Rezaie J. Inhibiting AKT signaling pathway with cilostazol and meloxicam synergism for suppressing K562 cells in vitro. J Biochem Mol Toxicol 2022; 36:e23185. [PMID: 35920412 DOI: 10.1002/jbt.23185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 05/30/2022] [Accepted: 07/25/2022] [Indexed: 11/11/2022]
Abstract
Despite advances in cancer treatment, chronic myeloid leukemia (CML) is still one of the leading causes of death in the world. Due to the role of inflammation in cancer promotion and progression, thus use of anti-inflammatory agents may suppress cancer cell growth. In this study, we used two anti-inflammatory drugs, cilostazol and meloxicam, for the treatment of CML. Cell viability was measured using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and the synergism occurrence was calculated by compusyn software. Annexin V/PI test and Hoechst staining were used to determine the apoptosis rate. To determine the pathway of apoptosis induction, the expression of BCL2 Associated X (Bax) and B-cell lymphoma-2 (Bcl-2) apoptotic genes and caspases activity were evaluated. The cell cycle was analyzed by propidium iodide (PI) staining and flow cytometry. Western blot analysis and immunofluorescence were performed to estimate alterations in Ak strain transforming-1 (AKT-1), phosphprylated AKT-1 (p-AKT-1), adenosine mono-phosphate-kinase (AMPK), and phosphorylated AMPK (p-AMPK) proteins and BCR/ABL and c-Myc distribution, respectively. Results showed that cilostazol, meloxicam, and their combination drug reduced cell viability (p < 0.05). Compared with control, expression of Bax and Bcl-2 decreased in treated cells, respectively (p < 0.05). The caspase-9 activity increased in treated cells compared to control cells (p < 0.001). The applied drugs decreased the protein level of p-AKT-1 while increasing the p-AMPK protein level (p < 0.05). BCR/ABL and c-Myc Protein distribution significantly decreased in treated cells. In conclusion, the combination drug had more cytotoxic effects than cilostazol and meloxicam alone and induced apoptosis by inhibiting AKT-1 activation and c-Myc reduction. Therefore using combination drugs effectively can treat cancers of CML origin.
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Affiliation(s)
- Laya Naderbar
- Biology department, Faculty of Sciences, Urmia University, Urmia, Iran
| | - Yaghub Pazhang
- Biology department, Faculty of Sciences, Urmia University, Urmia, Iran
| | - Jafar Rezaie
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
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De Re V, Rossetto A, Rosignoli A, Muraro E, Racanelli V, Tornesello ML, Zompicchiatti A, Uzzau A. Hepatocellular Carcinoma Intrinsic Cell Death Regulates Immune Response and Prognosis. Front Oncol 2022; 12:897703. [PMID: 35875093 PMCID: PMC9303009 DOI: 10.3389/fonc.2022.897703] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 06/06/2022] [Indexed: 12/03/2022] Open
Abstract
Ablative and locoregional treatment options, such as radiofrequency, ethanol injection, microwave, and cryoablation, as well as irreversible electroporation, are effective therapies for early-stage hepatocellular carcinoma (HCC). Hepatocyte death caused by ablative procedures is known to increase the release of tumor-associated antigen, thus enhancing tumor immunogenicity. In addition, the heat ablative resection induces pyroptotic cell death accompanied by the release of several inflammatory factors and immune-related proteins, including damage-associated molecular patterns (DAMPs), heat shock proteins (HSPs), ficolin 3, ATP, and DNA/RNA, which potentiate the antitumoral immune response. Surgical approaches that enhance tumor necrosis and reduce hypoxia in the residual liver parenchyma have been shown to increase the disease-free survival rate by reducing the host’s immunosuppressive response. Scalpel devices and targeted surgical approach combined with immune-modulating drugs are an interesting and promising area to maximize therapeutic outcomes after HCC ablation.
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Affiliation(s)
- Valli De Re
- Immunopatologia e Biomarcatori Oncologici/Bio-proteomics Facility, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, Aviano, Italy
- *Correspondence: Valli De Re, ; Anna Rossetto,
| | - Anna Rossetto
- General Surgery, Azienda Sanitaria Universitaria Friuli Centrale (ASUFC), San Daniele del Friuli, Udine, Italy
- *Correspondence: Valli De Re, ; Anna Rossetto,
| | - Alessandro Rosignoli
- Program of Hepatobiliopancreatic Surgery, Azienda Sanitaria Universitaria Friuli Centrale (ASU FC), University of Udine, Udine, Italy
| | - Elena Muraro
- Immunopatologia e Biomarcatori Oncologici/Bio-proteomics Facility, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, Aviano, Italy
| | - Vito Racanelli
- Department of Interdisciplinary Medicine, Medical School, Aldo Moro University of Bari, Bari, Italy
| | - Maria Lina Tornesello
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS Fondazione G. Pascale, Napoli, Italy
| | - Aron Zompicchiatti
- Program of Hepatobiliopancreatic Surgery, Azienda Sanitaria Universitaria Friuli Centrale (ASU FC), University of Udine, Udine, Italy
| | - Alessandro Uzzau
- Program of Hepatobiliopancreatic Surgery, Azienda Sanitaria Universitaria Friuli Centrale (ASU FC), University of Udine, Udine, Italy
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Li S, Kim HE. Implications of Sphingolipids on Aging and Age-Related Diseases. FRONTIERS IN AGING 2022; 2:797320. [PMID: 35822041 PMCID: PMC9261390 DOI: 10.3389/fragi.2021.797320] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/31/2021] [Indexed: 01/14/2023]
Abstract
Aging is a process leading to a progressive loss of physiological integrity and homeostasis, and a primary risk factor for many late-onset chronic diseases. The mechanisms underlying aging have long piqued the curiosity of scientists. However, the idea that aging is a biological process susceptible to genetic manipulation was not well established until the discovery that the inhibition of insulin/IGF-1 signaling extended the lifespan of C. elegans. Although aging is a complex multisystem process, López-Otín et al. described aging in reference to nine hallmarks of aging. These nine hallmarks include: genomic instability, telomere attrition, epigenetic alterations, loss of proteostasis, deregulated nutrient sensing, mitochondrial dysfunction, cellular senescence, stem cell exhaustion, and altered intercellular communication. Due to recent advances in lipidomic, investigation into the role of lipids in biological aging has intensified, particularly the role of sphingolipids (SL). SLs are a diverse group of lipids originating from the Endoplasmic Reticulum (ER) and can be modified to create a vastly diverse group of bioactive metabolites that regulate almost every major cellular process, including cell cycle regulation, senescence, proliferation, and apoptosis. Although SL biology reaches all nine hallmarks of aging, its contribution to each hallmark is disproportionate. In this review, we will discuss in detail the major contributions of SLs to the hallmarks of aging and age-related diseases while also summarizing the importance of their other minor but integral contributions.
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Affiliation(s)
- Shengxin Li
- Department of Integrative Biology and Pharmacology, McGovern Medical School, University of Texas Health Science Center at Houston, TX, United States
- Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Hyun-Eui Kim
- Department of Integrative Biology and Pharmacology, McGovern Medical School, University of Texas Health Science Center at Houston, TX, United States
- Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center, Houston, TX, United States
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Haas MJ, Warda F, Bikkina P, Landicho MA, Kapadia P, Parekh S, Mooradian AD. Differential effects of cyclooxygenase-2 (COX-2) inhibitors on endoplasmic reticulum (ER) stress in human coronary artery endothelial cells. Vascul Pharmacol 2021; 142:106948. [PMID: 34843981 DOI: 10.1016/j.vph.2021.106948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/21/2021] [Accepted: 11/23/2021] [Indexed: 11/18/2022]
Abstract
Selective cyclooxygenase-2 (COX-2) inhibitor rofecoxib was pulled off the market because of its association with increased risk of adverse cardiovascular effects. The precise underlying mechanism for the differential effects of COX-2 inhibitors on cardiovascular risk is not known. Since endoplasmic reticulum (ER) stress is implicated in atherogenesis, we examined the effects of COX-2 inhibitors on ER stress in primary human coronary artery endothelial cells (HCAEC), human umbilical vein endothelial cells (HUVEC), and human pulmonary artery endothelial cells (HPAEC). ER stress was measured in HCAEC treated with either tunicamycin (TM) or high-concentrations (27.5 mM) of dextrose (HD) using the secreted alkaline phosphatase (ES-TRAP) assay. Markers of the unfolded protein response (UPR) such as activating transcription factor 6 (ATF6), glucose-regulated protein 78 (GRP78), inositol-requiring enzyme 1α (IRE1α), phospho-IRE1α, protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK), and phospho-PERK were measured by Western blot. Treatment of HCAEC with TM and HD decreased secreted alkaline phosphatase activity indicating increased ER stress. Treatment of cells exposed to TM or HD with celecoxib, meloxicam, ibuprofen, and acetylsalicylic acid, but not rofecoxib, resulted in a dose-dependent decrease in ER stress. High-dextrose and TM increased IRE1α and PERK phosphorylation and ATF6 and GRP78 expression. Treatment with celecoxib, but not rofecoxib, inhibited these markers of the UPR. Treatment with selective COX-2 inhibitors, with the exception of rofecoxib, suppressed ER stress as measured with both alkaline phosphatase activity assays and markers for the UPR. The inability of rofecoxib to inhibit ER stress, unlike the other cyclooxygenase inhibitors tested, may have contributed to its unfavorable effects on cardiovascular outcomes.
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Affiliation(s)
- Michael J Haas
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209, USA..
| | - Firas Warda
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209, USA
| | - Priyanka Bikkina
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209, USA
| | - Marie Angelica Landicho
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209, USA
| | - Poonam Kapadia
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209, USA
| | - Shrina Parekh
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209, USA
| | - Arshag D Mooradian
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209, USA
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He C, Lu X, Li J, Shen K, Bai Y, Li Y, Luan H, Tuo S. The effect of quercetin on cervical cancer cells as determined by inducing tumor endoplasmic reticulum stress and apoptosis and its mechanism of action. Am J Transl Res 2021; 13:5240-5247. [PMID: 34150114 PMCID: PMC8205781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVE This study aimed to explore the effect of quercetin on cervical cancer cells by inducing tumor endoplasmic reticulum stress (ERS) and apoptosis and its mechanism of action. METHODS HeLa cells were treated with different concentrations of quercetin, and the cell viability was measured using methyl thiazolyl tetrazolium (MTT) colorimetric assays. The apoptosis rate was measured using flow cytometry. The changes in the related protein X (Bax), B-cell lymphoma/leukemia-2 (Bcl-2), and G1/S-specific cyclin-D1 (Cyclin D1) levels after the HeLe apoptosis were determined using Western blot, and the changes in the human cystinase-3 (Caspase-3), glucoprotein 78 (GRP78), and enhancer-binding protein homologous protein (CHOP) levels, and the receptor-related protein levels in the ERS pathway/endoribonuclease inositol requiring enzyme 1 (IRE1), and the phosphorylated pancreatic endoplasmic reticulum stress kinase (p-Perk), and the activated transcription factor-6 (ATF6) levels were also quantified. RESULTS After treating the HeLa cells with different concentrations of quercetin, the cell viability was inhibited to varying degrees, showing a significant time and concentration dependence. The apoptosis rate in the quercetin group increased significantly in comparison with the blank control group, and the apoptosis rate also showed a tendency to increase progressively with an increasing concentration of the quercetin (P<0.05). The Bax and Bcl-2 levels in the quercetin intervention group showed a tendency to increase progressively in comparison with the blank control group, and Cyclin D1 showed a tendency to decrease progressively (P<0.05). The of Caspase-3, GRP78, and CHOP expression levels in the quercetin intervention group rose significantly in comparison with the blank control group (P<0.05). The IRE1, p-Perk, and c-ATF6 levels in the quercetin intervention group showed a tendency to rise gradually in comparison with the blank control group (P<0.05). CONCLUSION Quercetin may promote the apoptosis of cervical cancer HeLe cells by inducing the tumor ERS pathway.
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Affiliation(s)
- Chunxiao He
- Department of Gynecology, Gansu Provincial Maternity and Child-care Hospital Lanzhou 730050, Gansu Province, P. R. China
| | - Xiaohui Lu
- Department of Gynecology, Gansu Provincial Maternity and Child-care Hospital Lanzhou 730050, Gansu Province, P. R. China
| | - Juan Li
- Department of Gynecology, Gansu Provincial Maternity and Child-care Hospital Lanzhou 730050, Gansu Province, P. R. China
| | - Ke Shen
- Department of Gynecology, Gansu Provincial Maternity and Child-care Hospital Lanzhou 730050, Gansu Province, P. R. China
| | - Yang Bai
- Department of Gynecology, Gansu Provincial Maternity and Child-care Hospital Lanzhou 730050, Gansu Province, P. R. China
| | - Yilin Li
- Department of Gynecology, Gansu Provincial Maternity and Child-care Hospital Lanzhou 730050, Gansu Province, P. R. China
| | - Hua Luan
- Department of Gynecology, Gansu Provincial Maternity and Child-care Hospital Lanzhou 730050, Gansu Province, P. R. China
| | - Shumei Tuo
- Department of Gynecology, Gansu Provincial Maternity and Child-care Hospital Lanzhou 730050, Gansu Province, P. R. China
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Santos-Galdiano M, González-Rodríguez P, Font-Belmonte E, Ugidos IF, Anuncibay-Soto B, Pérez-Rodríguez D, Fernández-López A. Celecoxib-Dependent Neuroprotection in a Rat Model of Transient Middle Cerebral Artery Occlusion (tMCAO) Involves Modifications in Unfolded Protein Response (UPR) and Proteasome. Mol Neurobiol 2021; 58:1404-1417. [PMID: 33184783 DOI: 10.1007/s12035-020-02202-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 11/03/2020] [Indexed: 10/23/2022]
Abstract
Stroke is one of the main causes of death and disability worldwide. Ischemic stroke results in unfolded/misfolded protein accumulation in endoplasmic reticulum (ER), a condition known as ER stress. We hypothesized that previously reported neuroprotection of celecoxib, a selective inhibitor of cyclooxygenase-2, in transient middle cerebral artery occlusion (tMCAO) model, relies on the ER stress decrease. To probe this hypothesis, Sprague-Dawley rats were subjected to 1 h of tMCAO and treated with celecoxib or vehicle 1 and 24 h after ischemia. Protein and mRNA levels of the main hallmarks of ER stress, unfolded protein response (UPR) activation, UPR-induced cell death, and ubiquitin proteasome system (UPS) and autophagy, the main protein degradation pathways, were measured at 12 and 48 h of reperfusion. Celecoxib treatment decreased polyubiquitinated protein load and ER stress marker expression such as glucose-related protein 78 (GRP78), C/EBP (CCAAT/enhancer-binding protein) homologous protein (CHOP), and caspase 12 after 48 h of reperfusion. Regarding the UPR activation, celecoxib promoted inositol-requiring enzyme 1 (IRE1) pathway instead of double-stranded RNA-activated protein kinase-like ER kinase (PERK) pathway. Furthermore, celecoxib treatment increased proteasome catalytic subunits transcript levels and decreased p62 protein levels, while the microtubule-associated protein 1 light chain 3 (LC3B) II/I ratio remained unchanged. Thus, the ability of celecoxib treatment on reducing the ER stress correlates with the enhancement of IRE1-UPR pathway and UPS degradation. These data support the ability of anti-inflammatory therapy in modulating ER stress and reveal the IRE1 pathway as a promising therapeutic target in stroke therapy.Graphical abstract.
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Affiliation(s)
- María Santos-Galdiano
- Área de Biología Celular, Instituto de Biomedicina, Campus de Vegazana s/n, Universidad de León, León, Spain
| | - Paloma González-Rodríguez
- Área de Biología Celular, Instituto de Biomedicina, Campus de Vegazana s/n, Universidad de León, León, Spain
| | - Enrique Font-Belmonte
- Área de Biología Celular, Instituto de Biomedicina, Campus de Vegazana s/n, Universidad de León, León, Spain
| | - Irene F Ugidos
- Área de Biología Celular, Instituto de Biomedicina, Campus de Vegazana s/n, Universidad de León, León, Spain
- Currently at AIV Institute, University of Eastern Finland, Kuopio, Finland
| | - Berta Anuncibay-Soto
- Área de Biología Celular, Instituto de Biomedicina, Campus de Vegazana s/n, Universidad de León, León, Spain
- Currently at Department of Life Sciences, Imperial College London (ICL), London, UK
| | - Diego Pérez-Rodríguez
- Área de Biología Celular, Instituto de Biomedicina, Campus de Vegazana s/n, Universidad de León, León, Spain.
- Currently at Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, London, UK.
| | - Arsenio Fernández-López
- Área de Biología Celular, Instituto de Biomedicina, Campus de Vegazana s/n, Universidad de León, León, Spain.
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Shi Y, Jin Y, Liu F, Jiang J, Cao J, Lu Y, Yang J. Ceramide induces the apoptosis of non‑small cell lung cancer cells through the Txnip/Trx1 complex. Int J Mol Med 2021; 47:85. [PMID: 33760130 PMCID: PMC7992921 DOI: 10.3892/ijmm.2021.4918] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/05/2021] [Indexed: 12/31/2022] Open
Abstract
Ceramide is a biologically active sphingomyelin that inhibits cell growth and proliferation. In previous studies, it was demonstrated that the use of lipopolysaccharides induces acid sphingomyelinases to produce ceramide, promoting lung cancer cell apoptosis; however, the specific mechanisms of this action remain unclear. Thioredoxin‑interacting protein (Txnip) plays an important role in the signal transmission of redox reactions inside and outside the cell. Thus, it was hypothesized that ceramide induces apoptosis in lung adenocarcinoma cells (A549 and PC9) by modulating the Txnip/Trx1 complex. In the present study, the Cell Counting kit‑8 method was used to detect cell activity and the drug concentration. Hoechst 33258 staining and flow cytometry were used to detect cell apoptosis, and the positional association between Txnip and Trx1 upregulated by ceramide was observed by immunofluorescence confocal microscopy. Reverse transcription‑quantitative polymerase chain reaction and western blot analysis were used to detect the changes in related gene, mRNA and protein expression levels. The results revealed that ceramide treatment resulted in the upregulation of Txnip and in the reduction of Trx1 activities. However, the Txnip inhibitor, verapamil, reversed these changes. The analysis of mRNA expression further verified the changes observed in the protein expression of Txnip, Trx1 and apoptosis‑related proteins. On the whole, the present study demonstrates that ceramide induces the apoptosis of lung cancer cells by regulating the Txnip/Trx1 complex.
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Affiliation(s)
- Yining Shi
- Department of Respiratory Medicine, The Second Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Yongmei Jin
- Department of Respiratory Medicine, The Second People's Hospital of Hefei, Hefei, Anhui 230022, P.R. China
| | - Fangfang Liu
- Department of Respiratory Medicine, The Second Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Jianjun Jiang
- Department of Respiratory Medicine, The First Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Jiyu Cao
- The Teaching Center for Preventive Medicine, School of Public Health, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Youjin Lu
- Department of Respiratory Medicine, The Second Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Jin Yang
- Department of Respiratory Medicine, The Second Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
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Sphingomyelinases and Liver Diseases. Biomolecules 2020; 10:biom10111497. [PMID: 33143193 PMCID: PMC7692672 DOI: 10.3390/biom10111497] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/27/2020] [Accepted: 10/28/2020] [Indexed: 02/06/2023] Open
Abstract
Sphingolipids (SLs) are critical components of membrane bilayers that play a crucial role in their physico-chemical properties. Ceramide is the prototype and most studied SL due to its role as a second messenger in the regulation of multiple signaling pathways and cellular processes. Ceramide is a heterogeneous lipid entity determined by the length of the fatty acyl chain linked to its carbon backbone sphingosine, which can be generated either by de novo synthesis from serine and palmitoyl-CoA in the endoplasmic reticulum or via sphingomyelin (SM) hydrolysis by sphingomyelinases (SMases). Unlike de novo synthesis, SMase-induced SM hydrolysis represents a rapid and transient mechanism of ceramide generation in specific intracellular sites that accounts for the diverse biological effects of ceramide. Several SMases have been described at the molecular level, which exhibit different pH requirements for activity: neutral, acid or alkaline. Among the SMases, the neutral (NSMase) and acid (ASMase) are the best characterized for their contribution to signaling pathways and role in diverse pathologies, including liver diseases. As part of a Special Issue (Phospholipases: From Structure to Biological Function), the present invited review summarizes the physiological functions of NSMase and ASMase and their role in chronic and metabolic liver diseases, of which the most relevant is nonalcoholic steatohepatitis and its progression to hepatocellular carcinoma, due to the association with the obesity and type 2 diabetes epidemic. A better understanding of the regulation and role of SMases in liver pathology may offer the opportunity for novel treatments of liver diseases.
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15
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Zappavigna S, Cossu AM, Grimaldi A, Bocchetti M, Ferraro GA, Nicoletti GF, Filosa R, Caraglia M. Anti-Inflammatory Drugs as Anticancer Agents. Int J Mol Sci 2020; 21:ijms21072605. [PMID: 32283655 PMCID: PMC7177823 DOI: 10.3390/ijms21072605] [Citation(s) in RCA: 154] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/06/2020] [Accepted: 04/07/2020] [Indexed: 02/07/2023] Open
Abstract
Inflammation is strictly associated with cancer and plays a key role in tumor development and progression. Several epidemiological studies have demonstrated that inflammation can predispose to tumors, therefore targeting inflammation and the molecules involved in the inflammatory process could represent a good strategy for cancer prevention and therapy. In the past, several clinical studies have demonstrated that many anti-inflammatory agents, including non-steroidal anti-inflammatory drugs (NSAIDs), are able to interfere with the tumor microenvironment by reducing cell migration and increasing apoptosis and chemo-sensitivity. This review focuses on the link between inflammation and cancer by describing the anti-inflammatory agents used in cancer therapy, and their mechanisms of action, emphasizing the use of novel anti-inflammatory agents with significant anticancer activity.
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Affiliation(s)
- Silvia Zappavigna
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (S.Z.); (A.M.C.); (A.G.); (M.B.); (M.C.)
| | - Alessia Maria Cossu
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (S.Z.); (A.M.C.); (A.G.); (M.B.); (M.C.)
- Biogem Scarl, Institute of Genetic Research, Laboratory of Molecular and Precision Oncology, 83031 Ariano Irpino, Italy
| | - Anna Grimaldi
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (S.Z.); (A.M.C.); (A.G.); (M.B.); (M.C.)
| | - Marco Bocchetti
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (S.Z.); (A.M.C.); (A.G.); (M.B.); (M.C.)
- Biogem Scarl, Institute of Genetic Research, Laboratory of Molecular and Precision Oncology, 83031 Ariano Irpino, Italy
| | - Giuseppe Andrea Ferraro
- Multidisciplinary Department of Medical and Dental Specialties, University of Campania, “Luigi Vanvitelli”, Plastic Surgery Unit, 80138 Naples, Italy; (G.A.F.); (G.F.N.)
| | - Giovanni Francesco Nicoletti
- Multidisciplinary Department of Medical and Dental Specialties, University of Campania, “Luigi Vanvitelli”, Plastic Surgery Unit, 80138 Naples, Italy; (G.A.F.); (G.F.N.)
| | - Rosanna Filosa
- Department of Science and Technology, University of Sannio, 82100 Benevento, Italy
- Consorzio Sannio Tech-AMP Biotec, 82030 Apollosa, Italy
- Correspondence:
| | - Michele Caraglia
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (S.Z.); (A.M.C.); (A.G.); (M.B.); (M.C.)
- Biogem Scarl, Institute of Genetic Research, Laboratory of Molecular and Precision Oncology, 83031 Ariano Irpino, Italy
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16
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Kwon MY, Hwang N, Lee SJ, Chung SW. Nucleotide-binding oligomerization domain protein 2 attenuates ER stress-induced cell death in vascular smooth muscle cells. BMB Rep 2020. [PMID: 31619316 PMCID: PMC6889894 DOI: 10.5483/bmbrep.2019.52.11.176] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Nucleotide-binding oligomerization domain protein 2 (NOD2), an intracellular pattern recognition receptor, plays important roles in inflammation and cell death. Previously, we have shown that NOD2 is expressed in vascular smooth muscle cells (VSMCs) and that NOD2 deficiency promotes VSMC proliferation, migration, and neointimal formation after vascular injury. However, its role in endoplasmic reticulum (ER) stress-induced cell death in VSMCs remains unclear. Thus, the objective of this study was to evaluate ER stress-induced viability of mouse primary VSMCs. NOD2 deficiency increased ER stress-induced cell death and expression levels of apoptosis mediators (cleaved caspase-3, Bax, and Bak) in VSMCs in the presence of tunicamycin (TM), an ER stress inducer. In contrast, ER stress-induced cell death and expression levels of apoptosis mediators (cleaved caspase-3, Bax, and Bak) were decreased in NOD2-overexpressed VSMCs. We found that the IRE-1α-XBP1 pathway, one of unfolded protein response branches, was decreased in NOD2-deficient VSMCs and reversed in NOD2-overexpressed VSMCs in the presence of TM. Furthermore, NOD2 deficiency reduced the expression of XBP1 target genes such as GRP78, PDI-1, and Herpud1, thus improving cell survival. Taken together, these data suggest that the induction of ER stress through NOD2 expression can protect against TM-induced cell death in VSMCs. These results may contribute to a new paradigm in vascular homeostasis. [BMB Reports 2019; 52(11): 665-670].
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Affiliation(s)
- Min-Young Kwon
- School of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - Narae Hwang
- School of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - Seon-Jin Lee
- Environmental Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Korea
| | - Su Wol Chung
- School of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
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Elevated plasma ceramide levels in post-menopausal women: a cross-sectional study. Aging (Albany NY) 2020; 11:73-88. [PMID: 30620722 PMCID: PMC6339790 DOI: 10.18632/aging.101719] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 12/06/2018] [Indexed: 12/22/2022]
Abstract
Circulating ceramide levels are abnormally elevated in age-dependent pathologies such as cardiovascular diseases, obesity and Alzheimer's disease. Nevertheless, the potential impact of age on plasma ceramide levels has not yet been systematically examined. In the present study, we quantified a focused panel of plasma ceramides and dihydroceramides in a cohort of 164 subjects (84 women) 19 to 80 years of age. After adjusting for potential confounders, multivariable linear regression analysis revealed a positive association between age and ceramide (d18:1/24:0) (β (SE) = 5.67 (2.38); p = .0198) and ceramide (d18:1/24:1) (β (SE) = 2.88 (.61); p < .0001) in women, and between age and ceramide (d18:1/24:1) in men (β (SE) = 1.86 (.77); p = .0179). In women of all ages, but not men, plasma ceramide (d18:1/24:1) was negatively correlated with plasma estradiol (r = -0.294; p = .007). Finally, in vitro experiments in human cancer cells expressing estrogen receptors showed that incubation with estradiol (10 nM, 24 h) significantly decreased ceramide accumulation. Together, the results suggest that aging is associated with an increase in circulating ceramide levels, which in post-menopausal women is at least partially associated with lower estradiol levels.
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Su X, Ye Y, Yang Y, Zhang K, Bai W, Chen H, Kang E, Kong C, He X. The Effect of SPTLC2 on Promoting Neuronal Apoptosis is Alleviated by MiR-124-3p Through TLR4 Signalling Pathway. Neurochem Res 2019; 44:2113-2122. [PMID: 31372925 DOI: 10.1007/s11064-019-02849-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 07/06/2019] [Accepted: 07/27/2019] [Indexed: 12/21/2022]
Abstract
To investigate the role and mechanism of microRNA-124-3p (miR-124-3p) and serine palmitoyltransferase long chain base subunit 2 (SPTLC2) in neuronal apoptosis induced by mechanical injury. Transient transfection was used to modify the expression of miR-124-3p and SPTLC2. After transfection, neuronal apoptosis was evaluated in an in vitro injury model of primary neurons using TUNEL staining and western blot. The correlation between miR-124-3p and SPTLC2 was identified through a dual luciferase reporter assay in HEK293 cells. A rescue experiment in primary neurons was performed to further confirm the result. To explore the downstream mechanisms, co-immunoprecipitation was performed to identify proteins that interact with SPTLC2 in toll-like receptor 4 (TLR4) signalling pathway. Subsequently, the relative expression levels of TLR4 pathway molecules were measured by western blot. Our results showed that increased miR-124-3p can inhibit neuronal apoptosis, which is opposite to the effect of SPTLC2. In addition, miR-124-3p was proved to negatively regulate SPTLC2 expression and suppress the apoptosis-promoting effect of SPTLC2 via the TLR4 signalling pathway.
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Affiliation(s)
- Xinhong Su
- Department of Neurosurgery, Xijing Hospital, Air Force Military Medical University, No. 169 Changle Western Road, Xi'an, 710032, Shanxi, China
| | - Yuqin Ye
- Department of Neurosurgery, PLA 921rd Hospital, Changsha, 410000, Hunan, China
| | - Yongxiang Yang
- Department of Neurosurgery, Xijing Hospital, Air Force Military Medical University, No. 169 Changle Western Road, Xi'an, 710032, Shanxi, China
| | - Kailiang Zhang
- Department of Orthopedic Surgery, Orthopedic Oncology Institute of Chinese PLA, Tangdu Hospital, Air Force Military Medical University, Xi'an, 710032, Shanxi, China
| | - Wei Bai
- Department of Neurosurgery, Xijing Hospital, Air Force Military Medical University, No. 169 Changle Western Road, Xi'an, 710032, Shanxi, China
| | - Huijun Chen
- Department of Neurosurgery, Xijing Hospital, Air Force Military Medical University, No. 169 Changle Western Road, Xi'an, 710032, Shanxi, China
| | - Enming Kang
- Department of Neurosurgery, Xijing Hospital, Air Force Military Medical University, No. 169 Changle Western Road, Xi'an, 710032, Shanxi, China
| | - Chuiguang Kong
- Department of Neurosurgery, Xijing Hospital, Air Force Military Medical University, No. 169 Changle Western Road, Xi'an, 710032, Shanxi, China
| | - Xiaosheng He
- Department of Neurosurgery, Xijing Hospital, Air Force Military Medical University, No. 169 Changle Western Road, Xi'an, 710032, Shanxi, China.
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Magaye RR, Savira F, Hua Y, Kelly DJ, Reid C, Flynn B, Liew D, Wang BH. The role of dihydrosphingolipids in disease. Cell Mol Life Sci 2019; 76:1107-1134. [PMID: 30523364 PMCID: PMC11105797 DOI: 10.1007/s00018-018-2984-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 11/06/2018] [Accepted: 11/26/2018] [Indexed: 12/29/2022]
Abstract
Dihydrosphingolipids refer to sphingolipids early in the biosynthetic pathway that do not contain a C4-trans-double bond in the sphingoid backbone: 3-ketosphinganine (3-ketoSph), dihydrosphingosine (dhSph), dihydrosphingosine-1-phosphate (dhS1P) and dihydroceramide (dhCer). Recent advances in research related to sphingolipid biochemistry have shed light on the importance of sphingolipids in terms of cellular signalling in health and disease. However, dihydrosphingolipids have received less attention and research is lacking especially in terms of their molecular mechanisms of action. This is despite studies implicating them in the pathophysiology of disease, for example dhCer in predicting type 2 diabetes in obese individuals, dhS1P in cardiovascular diseases and dhSph in hepato-renal toxicity. This review gives a comprehensive summary of research in the last 10-15 years on the dihydrosphingolipids, 3-ketoSph, dhSph, dhS1P and dhCer, and their relevant roles in different diseases. It also highlights gaps in research that could be of future interest.
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Affiliation(s)
- Ruth R Magaye
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Feby Savira
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Yue Hua
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Darren J Kelly
- Department of Medicine, St Vincent's Hospital, University of Melbourne, Fitzroy, VIC, Australia
| | - Christopher Reid
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Bernard Flynn
- Australian Translational Medicinal Chemistry Facility, Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, Australia
| | - Danny Liew
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Bing H Wang
- Monash Centre of Cardiovascular Research and Education in Therapeutics, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia.
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Voelkel-Johnson C, Norris JS, White-Gilbertson S. Interdiction of Sphingolipid Metabolism Revisited: Focus on Prostate Cancer. Adv Cancer Res 2018; 140:265-293. [PMID: 30060812 PMCID: PMC6460930 DOI: 10.1016/bs.acr.2018.04.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Sphingolipid metabolism is known to play a role in cell death, survival, and therapy resistance in cancer. Sphingolipids, particularly dihydroceramide and ceramide, are associated with antiproliferative or cell death responses, respectively, and are central to effective cancer therapy. Within the last decade, strides have been made in elucidating many intricacies of sphingolipid metabolism. New information has emerged on the mechanisms by which sphingolipid metabolism is dysregulated during malignancy and how cancer cells survive and/or escape therapeutic interventions. This chapter focuses on three main themes: (1) sphingolipid enzymes that are dysregulated in cancer, particularly in prostate cancer; (2) inhibitors of sphingolipid metabolism that antagonize prosurvival responses; and (3) sphingolipid-driven escape mechanisms that allow cancer cells to evade therapies. We explore clinical and preclinical approaches to interdict sphingolipid metabolism and provide a rationale for combining strategies to drive the generation of antiproliferative ceramides with prevention of ceramide clearance.
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Affiliation(s)
- Christina Voelkel-Johnson
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
| | - James S. Norris
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
| | - Shai White-Gilbertson
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
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