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Liu C, Ju R. Potential Role of Endoplasmic Reticulum Stress in Modulating Protein Homeostasis in Oligodendrocytes to Improve White Matter Injury in Preterm Infants. Mol Neurobiol 2024; 61:5295-5307. [PMID: 38180617 DOI: 10.1007/s12035-023-03905-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 12/22/2023] [Indexed: 01/06/2024]
Abstract
Preterm white matter injury (WMI) is a demyelinating disease with high incidence and mortality in premature infants. Oligodendrocyte cells (OLs) are a specialized glial cell that produces myelin proteins and adheres to the axons providing energy and metabolic support which susceptible to endoplasmic reticulum protein quality control. Disruption of cellular protein homeostasis led to OLs dysfunction and cell death, immediately, the unfolded protein response (UPR) activated to attempt to restore the protein homeostasis via IRE1/XBP1s, PERK/eIF2α and ATF6 pathway that reduced protein translation, strengthen protein-folding capacity, and degraded unfolding/misfolded protein. Moreover, recent works have revealed the conspicuousness function of ER signaling pathways in regulating influenced factors such as calcium homeostasis, mitochondrial reactive oxygen generation, and autophagy activation to regulate protein hemostasis and improve the myelination function of OLs. Each of the regulation modes and their corresponding molecular mechanisms provides unique opportunities and distinct perspectives to obtain a deep understanding of different actions of ER stress in maintaining OLs' health and function. Therefore, our review focuses on summarizing the current understanding of ER stress on OLs' protein homeostasis micro-environment in myelination during white matter development, as well as the pathophysiology of WMI, and discussing the further potential experimental therapeutics targeting these factors that restore the function of the UPR in OLs myelination function.
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Affiliation(s)
- Chang Liu
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Rong Ju
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China.
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Araujo-Castro M, Marazuela M, Puig-Domingo M, Biagetti B. Prolactin and Growth Hormone Signaling and Interlink Focused on the Mammosomatotroph Paradigm: A Comprehensive Review of the Literature. Int J Mol Sci 2023; 24:14002. [PMID: 37762304 PMCID: PMC10531307 DOI: 10.3390/ijms241814002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/01/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Prolactin (PRL) and growth hormone (GH) are peptide hormones that bind to the class 1 cytokine receptor superfamily, a highly conserved cell surface class of receptors. Both hormones control their own secretion via a negative autocrine loop in their own mammosomatotroph, lactotroph or somatotroph. In this regard, GH and PRL are regulated by similar signaling pathways involving cell growth and hormone secretion. Thus, GH and PRL dysregulation and pituitary neuroendocrine tumor (PitNET) development may have common pathogenic pathways. Based on cell linage, lactotroph and somatotroph PitNETs come from pituitary-specific POU-class homeodomain transcription factor (Pit-1). Mammosomatotroph and plurihormonal PitNETs are a unique subtype of PitNETs that arise from a single-cell population of Pit-1 lineage. In contrast, mixed somatotroph-lactotroph PitNETs are composed of two distinct cell populations: somatotrophs and lactotrophs. Morphologic features that distinguish indolent PitNETs from locally aggressive ones are still unidentified, and no single prognostic parameter can predict tumor aggressiveness or treatment response. In this review, we aim to explore the latest research on lactotroph and somatotroph PitNETs, the molecular mechanisms involved in PRL and GH axis regulation and the signaling pathways involved in their aggressiveness, particularly focused on mammosomatotroph and mixed subtypes. Finally, we summarize epidemiological, clinical, and radiological features of these exceptional tumors. We aim to shed light, from basic to clinical settings, on new perspectives and scientific gaps in this field.
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Affiliation(s)
- Marta Araujo-Castro
- Department of Endocrinology and Nutrition, Hospital Universitario Ramón y Cajal, Colmenar Viejo Street km 9, 28034 Madrid, Spain
- Instituto de Investigación Biomédica Ramón y Cajal (IRYCIS), Colmenar Viejo Street km 9, 28034 Madrid, Spain
| | - Mónica Marazuela
- Department of Endocrinology and Nutrition, Hospital Universitario La Princesa, 28006 Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER GCV14/ER/12), Monforte de Lemos Avenue, 28029 Madrid, Spain
| | - Manel Puig-Domingo
- Department of Endocrinology and Nutrition, Department of Medicine, Germans Trias i Pujol Research Institute and Hospital, Universitat Autònoma de Barcelona, 08916 Badalona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras CIBERER G747, Monforte de Lemos Avenue, 28029 Madrid, Spain
| | - Betina Biagetti
- Department of Endocrinology and Nutrition, Vall d’Hebron University Hospital, Reference Networks (ERN) and Vall d’Hebron Research Institute (VHIR), Vall d’Hebron Avenue, 119, 08035 Barcelona, Spain
- Diabetes and Metabolism Research Unit, Vall d’Hebron Research Institute and CIBERDEM (ISCIII), Universidad Autónoma de Barcelona, Avenida Can Domènech s/n, 08193 Bellaterra, Spain
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You J, Zhao M, Chen S, Jiang L, Gao S, Yin H, Zhao L. Effect of chitooligosaccharides with a specific degree of polymerization on multiple targets in T2DM mice. BIORESOUR BIOPROCESS 2022; 9:94. [PMID: 38647883 PMCID: PMC10992422 DOI: 10.1186/s40643-022-00579-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/11/2022] [Indexed: 11/10/2022] Open
Abstract
Chitooligosaccharides (COS) are found naturally in the ocean and present a variety of physiological activities, of which hypoglycemic action has attracted considerable research attention. This study aimed to assess the therapeutic effect of COS on mice suffering from type 2 diabetes mellitus (T2DM). COS effectively reduced blood glucose and blood lipid levels and improved glucose tolerance. Furthermore, COS revealed strong inhibitory activity against α-glucosidase, reducing postprandial blood glucose levels. Molecular docking data showed that COS might interact with surrounding amino acids to form a complex and decrease α-glucosidase activity. Additionally, COS enhanced insulin signal transduction and glycogen synthesis while restricting gluconeogenesis in the liver and muscles, reducing insulin resistance (IR) as a result. Moreover, COS effectively protected and restored islet cell function to increase insulin secretion. These results indicated that COS exhibited a significant hypoglycemic effect with multi-target participation. Therefore, COS may serve as a new preventive or therapeutic drug for diabetes to alleviate metabolic syndrome.
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Affiliation(s)
- Jiangshan You
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
| | - Mengyao Zhao
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
- Shanghai Collaborative Innovation Center for Biomanufacturing Technology (SCICBT), Shanghai, 200237, China
| | - Shumin Chen
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
| | - Lihua Jiang
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
- Shanghai Collaborative Innovation Center for Biomanufacturing Technology (SCICBT), Shanghai, 200237, China
| | - Shuhong Gao
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
| | - Hao Yin
- Organ Transplant Center, Shanghai Changzheng Hospital, Shanghai, 200003, China.
| | - Liming Zhao
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China.
- Shanghai Collaborative Innovation Center for Biomanufacturing Technology (SCICBT), Shanghai, 200237, China.
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Ubiquitination-Proteasome System (UPS) and Autophagy Two Main Protein Degradation Machineries in Response to Cell Stress. Cells 2022; 11:cells11050851. [PMID: 35269473 PMCID: PMC8909305 DOI: 10.3390/cells11050851] [Citation(s) in RCA: 72] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/17/2022] [Accepted: 02/22/2022] [Indexed: 02/07/2023] Open
Abstract
In response to environmental stimuli, cells make a series of adaptive changes to combat the injury, repair the damage, and increase the tolerance to the stress. However, once the damage is too serious to repair, the cells will undergo apoptosis to protect the overall cells through suicidal behavior. Upon external stimulation, some intracellular proteins turn into unfolded or misfolded protein, exposing their hydrophobic regions to form protein aggregation, which may ultimately produce serious damage to the cells. Ubiquitin plays an important role in the degradation of these unnatural proteins by tagging with ubiquitin chains in the ubiquitin-proteasome or autophagy system. If the two processes fail to eliminate the abnormal protein aggregates, the cells will move to apoptosis and death. Dysregulation of ubiquitin-proteasome system (UPS) and autophagy may result in the development of numerous diseases. This review focuses on the molecular mechanisms of UPS and autophagy in clearance of intracellular protein aggregates, and the relationship between dysregulation of ubiquitin network and diseases.
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Liu C, Nakano-Tateno T, Satou M, Chik C, Tateno T. Emerging role of signal transducer and activator of transcription 3 (STAT3) in pituitary adenomas. Endocr J 2021; 68:1143-1153. [PMID: 34248112 DOI: 10.1507/endocrj.ej21-0106] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Pituitary adenomas are benign tumours that can cause an individual various clinical manifestations including tumour mass effects and/or the diverse effects of abnormal pituitary hormone secretion. Given the morbidity and limited treatment options for pituitary adenomas, there is a need for better biomarkers and treatment options. One molecule that is of specific interest is the signal transducer and activator of transcription 3 (STAT3), a transcription factor that plays a critical role in mediating cytokine-induced changes in gene expression. In addition, STAT3 controls cell proliferation by regulating mitochondrial activity. Not only does activation of STAT3 play a crucial role in tumorigenesis, including pituitary tumorigenesis, but a number of studies also demonstrate pharmacological STAT3 inhibition as a promising treatment approach for many types of tumours, including pituitary tumours. This review will focus on the role of STAT3 in different pituitary adenomas, in particular, growth hormone-producing adenomas and null cell adenomas. Furthermore, how STAT3 is involved in the cell proliferation and hormone regulation in pituitary adenomas and its potential role as a molecular therapeutic target in pituitary adenomas will be summarized.
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Affiliation(s)
- Cyndy Liu
- Division of Endocrinology and Metabolism, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Tae Nakano-Tateno
- Division of Endocrinology and Metabolism, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Motoyasu Satou
- Division of Endocrinology and Metabolism, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
- Department of Biochemistry, Dokkyo Medical University School of Medicine, Mibu, Tochigi, Japan
| | - Constance Chik
- Division of Endocrinology and Metabolism, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Toru Tateno
- Division of Endocrinology and Metabolism, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
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Biagetti B, Simò R. Molecular Pathways in Prolactinomas: Translational and Therapeutic Implications. Int J Mol Sci 2021; 22:ijms222011247. [PMID: 34681905 PMCID: PMC8538771 DOI: 10.3390/ijms222011247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/11/2021] [Accepted: 10/16/2021] [Indexed: 11/17/2022] Open
Abstract
Prolactinoma has the highest incidence rate among patients with functional pituitary tumours. Although mostly benign, there is a subgroup that can be aggressive. Some clinical, radiological and pathology features have been associated with a poor prognostic. Therefore, it can be considered as a group of heterogeneous tumours. The aim of this paper is to give an overview of the molecular pathways involved in the behaviour of prolactinoma in order to improve our approach and gain deeper insight into the better understanding of tumour development and its management. This is essential for identifying patients harbouring aggressive prolactinoma and to establish personalised therapeutics options.
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Coker-Gurkan A, Can E, Sahin S, Obakan-Yerlikaya P, Arisan ED. Atiprimod triggered apoptotic cell death via acting on PERK/eIF2α/ATF4/CHOP and STAT3/NF-ΚB axis in MDA-MB-231 and MDA-MB-468 breast cancer cells. Mol Biol Rep 2021; 48:5233-5247. [PMID: 34244887 DOI: 10.1007/s11033-021-06528-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/27/2021] [Indexed: 12/23/2022]
Abstract
PURPOSE The constitutive activation of STAT3 through receptor tyrosine kinases triggered breast cancer cell growth and invasion-metastasis. Atiprimod impacts anti-proliferative, anti-carcinogenic effects in hepatocellular carcinoma, lymphoma, multiple myeloma via hindering the biological activity of STAT3. Dose-dependent atiprimod evokes first autophagy as a survival mechanism and then apoptosis due to prolonged ER stress in pituitary adenoma cells. The therapeutic efficiency and mechanistic action of atiprimod in breast cancer cells have not been investigated yet. Thus, we aimed to modulate the pivotal role of ER stress in atiprimod-triggered apoptosis in MDA-MB-231 and MDA-MB-468 breast cancer cells. RESULTS Dose- and time-dependent atiprimod treatment inhibits cell viability and colony formation in MDA-MB-468 and MDA-MB-231 breast cancer cells. A moderate dose of atiprimod (2 μM) inhibited STAT3 phosphorylation at Tyr705 residue and also suppressed the total expression level of p65. In addition, nuclear localization of STAT1, 3, and NF-κB was prevented by atiprimod exposure in MDA-MB-231 and MDA-MB-468 cells. Atiprimod evokes PERK, BiP, ATF-4, CHOP upregulation, and PERK (Thr980), eIF2α (Ser51) phosphorylation's. However, atiprimod suppressed IRE1α-mediated Atg-3, 5, 7, 12 protein expressions and no alteration was observed on Beclin-1, p62 expression levels. PERK/eIF2α/ATF4/CHOP axis pivotal role in atiprimod-mediated G1/S arrest and apoptosis via Bak, Bax, Bim, and PUMA upregulation in MDA-MB-468 cells. Moreover, atiprimod renders MDA-MB-231 more vulnerable to type I programmed cell death by plasmid-mediated increased STAT3 expression. CONCLUSION Atiprimod induced prolonged ER stress-mediated apoptosis via both activating PERK/eIF2α/ATF4/CHOP axis and suppressing STAT3/NF-κB transcription factors nuclear migration in TBNC cells.
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Affiliation(s)
- Ajda Coker-Gurkan
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Biruni University, Topkapı Campus, 34010, Istanbul, Turkey.
| | - Esin Can
- Department of Molecular Biology and Genetics, Science and Letters Faculty, Istanbul Kultur University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Semanur Sahin
- Department of Molecular Biology and Genetics, Science and Letters Faculty, Istanbul Kultur University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Pınar Obakan-Yerlikaya
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Biruni University, Topkapı Campus, 34010, Istanbul, Turkey
| | - Elif-Damla Arisan
- Institute of Biotechnology, Gebze Technical University, Gebze, Turkey
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Tulipano G, Giustina A. Autophagy in normal pituitary and pituitary tumor cells and its potential role in the actions of somatostatin receptor ligands in acromegaly. Rev Endocr Metab Disord 2021; 22:147-160. [PMID: 33821422 DOI: 10.1007/s11154-021-09649-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/22/2021] [Indexed: 12/14/2022]
Abstract
Autophagy is an evolutionary conserved process for the self-degradation and recycling of cellular components in the cytoplasm. It is involved in both physiological and pathological conditions. In detail, the term "autophagy" refers to intracellular degradative pathways that lead to packaging and deliver of cellular components to lysosomes or to plant and yeast vacuoles. Autophagy is triggered by a variety of stimuli like nutrient deprivation, hypoxia, mitochondrial dysfunction, endoplasmic reticulum stress, and is regulated by immune- and hormonal factors. The role of autophagy in tumor cells is complex. Indeed, autophagy may act as a tumor suppressor as well as a tumor survival factor, in a context-dependent manner. The research into autophagy in normal pituitary and pituitary tumors has not gained great consideration, yet. Nevertheless, some recent articles joint to previous case studies, suggest that this process plays a role in the modulation and fluctuation of normal pituitary cell functions and in the response of pituitary tumor cells to drug therapy, including the response to somatostatin receptor ligand (SRLs), the first-line medical therapy of acromegaly. Although it is not possible to draw any conclusion, the aim of this review was to highlight some considerations and perspectives in this research field. Reports on the effects of octreotide on autophagy induction and autophagic flux in extra-pituitary target tissues, have also been discussed.
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Affiliation(s)
- Giovanni Tulipano
- Unit of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy.
| | - Andrea Giustina
- Institute of Endocrine and Metabolic Sciences, Division of Endocrinology IRCCS, Vita Salute San Raffaele University, San Raffaele Hospital, Milan, Italy
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Li F, Geng X, Lee H, Wills M, Ding Y. Neuroprotective Effects of Exercise Postconditioning After Stroke via SIRT1-Mediated Suppression of Endoplasmic Reticulum (ER) Stress. Front Cell Neurosci 2021; 15:598230. [PMID: 33664650 PMCID: PMC7920953 DOI: 10.3389/fncel.2021.598230] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 01/25/2021] [Indexed: 01/13/2023] Open
Abstract
While it is well-known that pre-stroke exercise conditioning reduces the incidence of stroke and the development of comorbidities, it is unclear whether post-stroke exercise conditioning is also neuroprotective. The present study investigated whether exercise postconditioning (PostE) induced neuroprotection and elucidated the involvement of SIRT1 regulation on the ROS/ER stress pathway. Adult rats were subjected to middle cerebral artery occlusion (MCAO) followed by either: (1) resting; (2) mild exercise postconditioning (MPostE); or (3) intense exercise postconditioning (IPostE). PostE was initiated 24 h after reperfusion and performed on a treadmill. At 1 and 3 days thereafter, we determined infarct volumes, neurological defects, brain edema, apoptotic cell death through measuring pro- (BAX and Caspase-3) and anti-apoptotic (Bcl-2) proteins, and ER stress through the measurement of glucose-regulated protein 78 (GRP78), inositol-requiring 1α (IRE1α), protein kinase RNA-like endoplasmic reticulum kinase (PERK), activating transcription factor 6 (ATF6), C/EBP homologous protein (CHOP), Caspase-12, and SIRT1. Proteins were measured by Western blot. ROS production was detected by flow cytometry.Compared to resting rats, both MPostE and IPostE significantly decreased brain infarct volumes and edema, neurological deficits, ROS production, and apoptotic cell death. MPostE further increased Bcl-2 expression and Bcl-2/BAX ratio as well as BAX and Caspase-3 expressions and ROS production (*p < 0.05). Both PostE groups saw decreases in ER stress proteins, while MPostE demonstrated a further reduction in GRP78 (***p < 0.001) and Caspase-12 (*p < 0.05) expressions at 1 day and IRE1α (**p < 0.01) and CHOP (*p < 0.05) expressions at 3 days. Additionally, both PostE groups saw significant increases in SIRT1 expression.In this study, both mild and intense PostE levels induced neuroprotection after stroke through SIRT1 and ROS/ER stress pathway. Additionally, the results may provide a base for our future study regarding the regulation of SIRT1 on the ROS/ER stress pathway in the biochemical processes underlying post-stroke neuroprotection. The results suggest that mild exercise postconditioning might play a similar neuroprotective role as intensive exercise and could be an effective exercise strategy as well.
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Affiliation(s)
- Fengwu Li
- China-America Institute of Neuroscience, Luhe Hospital, Capital Medical University, Beijing, China
| | - Xiaokun Geng
- China-America Institute of Neuroscience, Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Hangil Lee
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Melissa Wills
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States
| | - Yuchuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, United States.,Department of Research and Development Center, John D. Dingell VA Medical Center, Detroit, MI, United States
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Coker-Gurkan A, Ozakaltun B, Akdeniz BS, Ergen B, Obakan-Yerlikaya P, Akkoc T, Arisan ED. Proinflammatory cytokine profile is critical in autocrine GH-triggered curcumin resistance engulf by atiprimod cotreatment in MCF-7 and MDA-MB-231 breast cancer cells. Mol Biol Rep 2020; 47:8797-8808. [PMID: 33130987 DOI: 10.1007/s11033-020-05928-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 10/16/2020] [Indexed: 01/01/2023]
Abstract
Active growth hormone (GH) signaling triggers cellular growth and invasion-metastasis in colon, breast, and prostate cancer. Curcumin, an inhibitor of NF-ҡB pathway, is assumed to be a promising anti-carcinogenic agent. Atiprimod is also an anti-inflammatory, anti-carcinogenic agent that induces apoptotic cell death in hepatocellular carcinoma, multiple myeloma, and pituitary adenoma. We aimed to demonstrate the potential additional effect of atiprimod on curcumin-induced apoptotic cell death via cytokine expression profiles in MCF-7 and MDA-MB-231 cells with active GH signaling. The effect of curcumin and/or atiprimod on IL-2, IL-4, and IL-17A levels were measured by ELISA assay. MTT cell viability, trypan blue exclusion, and colony formation assays were performed to determine the effect of combined drug exposure on cell viability, growth, and colony formation, respectively. Alteration of the NF-ҡB signaling pathway protein expression profile was determined following curcumin and/or atiprimod exposure by RT-PCR and immunoblotting. Finally, the effect of curcumin with/without atiprimod treatment on Reactive Oxygen Species (ROS) generation and apoptotic cell death was examined by DCFH-DA and Annexin V/PI FACS flow analysis, respectively. Autocrine GH-mediated IL-6, IL-8, IL-10 expressions were downregulated by curcumin treatment. Atiprimod co-treatment increased the inhibitory effect of curcumin on cell viability, proliferation and also increased the curcumin-triggered ROS generation in each GH+ breast cancer cells. Combined drug exposure increased apoptotic cell death through acting on IL-2, IL-4, and IL-17A secretion. Forced GH-triggered curcumin resistance might be overwhelmed by atiprimod and curcumin co-treatment via modulating NF-ҡB-mediated inflammatory cytokine expression in MCF-7 and MDA-MB-231 cells.
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Affiliation(s)
- Ajda Coker-Gurkan
- Science and Letter Faculty, Department of Molecular Biology and Genetics, Istanbul Kültür University, Atakoy Campus, 34156, Istanbul, Turkey.
| | - Buse Ozakaltun
- Science and Letter Faculty, Department of Molecular Biology and Genetics, Istanbul Kültür University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Berre-Serra Akdeniz
- Science and Letter Faculty, Department of Molecular Biology and Genetics, Istanbul Kültür University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Berfin Ergen
- Science and Letter Faculty, Department of Molecular Biology and Genetics, Istanbul Kültür University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Pınar Obakan-Yerlikaya
- Science and Letter Faculty, Department of Molecular Biology and Genetics, Istanbul Kültür University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Tunc Akkoc
- Department of Pediatric Allergy-Immunology, School of Medicine, Marmara University, Istanbul, Turkey
| | - Elif-Damla Arisan
- Institution of Biotechnology, Gebze Technical University, Gebze, Turkey
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Zhan C, Liu W, Zhang F, Zhang X. Microcystin-LR triggers different endoplasmic reticulum stress pathways in the liver, ovary, and offspring of zebrafish (Danio rerio). JOURNAL OF HAZARDOUS MATERIALS 2020; 386:121939. [PMID: 31884362 DOI: 10.1016/j.jhazmat.2019.121939] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/12/2019] [Accepted: 12/17/2019] [Indexed: 06/10/2023]
Abstract
The existence of microcystins (MCs), the secondary metabolite of cyanobacteria, has become a growing public health concern. Previous researches have proved that MCs can trigger endoplasmic reticulum stress (ERS), but the underlying mechanisms remain unclear. In the present study, adult female zebrafish were exposed to MC-LR (0, 1, 5 and 20 μg/L) for 30 d, and the offspring derived from the treated females and healthy males were cultured in water without MC-LR until 96 h post fertilization (hpf). Our data suggested that MC-LR causes a significant increase in the eif2s1a, atf4, and eif2ak3 transcription levels in the liver and ovary. The mRNA levels of atf4, atf6, bcl-2, hspa5, eif2s1a and eif2ak3 upregulated notably in the offspring. JNK phosphorylation level and cleaved-caspase3 protein expression elevated obviously in the liver and ovary, but had no remarkable change in the offspring. Furthermore, TUNEL results showed that MC-LR significantly induced apoptosis in the liver and ovary, while acridine orange (AO) staining indicated that MC-LR did not cause abnormal apoptosis in offspring. Concisely, the present study indicated that MC-LR leads to apoptosis through different ERS pathways in the liver, ovary and offspring, and also provides a new perspective for understanding the apoptosis caused by MC-LR.
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Affiliation(s)
- Chunhua Zhan
- College of Fisheries, Huazhong Agricultural University, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan 430070, China
| | - Wanjing Liu
- College of Fisheries, Huazhong Agricultural University, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan 430070, China
| | - Feng Zhang
- College of Fisheries, Huazhong Agricultural University, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan 430070, China
| | - Xuezhen Zhang
- College of Fisheries, Huazhong Agricultural University, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan 430070, China.
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Ye X, Liang T, Deng C, Li Z, Yan D. MSRB3 promotes the progression of clear cell renal cell carcinoma via regulating endoplasmic reticulum stress. Pathol Res Pract 2019; 216:152780. [PMID: 31889586 DOI: 10.1016/j.prp.2019.152780] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/29/2019] [Accepted: 12/01/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND Renal cancer represents about 3 % of all human cancers. Clear cell renal cell carcinoma (ccRCC) is the main type of renal cancer. Methionine sulfoxide reductase B3 (MSRB3) is a protein repair enzyme that specifically catalyzes the reduction of methionine-R-sulfoxide residues and has an antioxidant function. However, MSRB3's role in ccRCC is still obscure. METHODS Immunohistochemical staining and Real-time PCR were used to compare the expression level of MSRB3 in ccRCC tissues and adjacent tissues. Western blot was used to detect the expression of MSRB3 in cell lines. Chi-square test were applied to evaluate the potential of MSRB3 to function as a cancer biomarker. RNA interference was used to inhibit MSRB3 expression in ccRCC cells, followed by detecting cell proliferation, apoptosis, migration and invasion. The markers of endoplasmic reticulum stress were then detected by western blot. RESULTS In this study, we validated that MSRB3 was significantly up-regulated in ccRCC samples and cell lines. It was also demonstrated that the up-regulation of MSRB3 was associated with several clinicopathologic features. Knockdown of MSRB3 remarkably arrested the proliferation, migration and invasion, while promoted apoptosis, and induced the changes of markers of endoplasmic reticulum stress. CONCLUSION In conclusion, we demonstrated that MSRB3 was an oncogene of ccRCC associated with patients' pathological characteristics and modulated endoplasmic reticulum stress of cancer cells.
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Affiliation(s)
- Xuxiao Ye
- Department of Urology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Science, Shanghai, 201306, China
| | - Tao Liang
- Department of Urology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Science, Shanghai, 201306, China
| | - Chao Deng
- Department of Urology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Science, Shanghai, 201306, China
| | - Zuowei Li
- Department of Urology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Science, Shanghai, 201306, China
| | - Dongliang Yan
- Department of Urology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Science, Shanghai, 201306, China.
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