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Moggio M, La Noce M, Tirino V, Papaccio G, Lepore M, Diano N. Sphingolipidomic profiling of human Dental Pulp Stem Cells undergoing osteogenic differentiation. Chem Phys Lipids 2024; 263:105420. [PMID: 39053614 DOI: 10.1016/j.chemphyslip.2024.105420] [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: 03/27/2024] [Revised: 07/18/2024] [Accepted: 07/22/2024] [Indexed: 07/27/2024]
Abstract
It is now recognized that sphingolipids are involved in the regulation and pathophysiology of several cellular processes such as proliferation, migration, and survival. Growing evidence also implicates them in regulating the behaviour of stem cells, the use of which is increasingly finding application in regenerative medicine. A shotgun lipidomic study was undertaken to determine whether sphingolipid biomarkers exist that can regulate the proliferation and osteogenic differentiation of human Dental Pulp Stem Cells (hDPSCs). Sphingolipids were extracted and identified by direct infusion into an electrospray mass spectrometer. By using cells cultured in osteogenic medium and in medium free of osteogenic stimuli, as a control, we analyzed and compared the SPLs profiles. Both cellular systems were treated at different times (72 hours, 7 days, and 14 days) to highlight any changes in the sphingolipidomic profiles in the subsequent phases of the differentiation process. Signals from sphingolipid species demonstrating clear differences were selected, their relative abundance was determined, and statistical differences were analyzed. Thus, our work suggests a connection between sphingolipid metabolism and hDPSC osteogenic differentiation and provides new biomarkers for improving hDPSC-based orthopaedic regenerative medicine.
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Affiliation(s)
- Martina Moggio
- Department of Experimental Medicine - University of Campania "L. Vanvitelli", Via S. M. di Costantinopoli, 16, Naples 80138, Italy
| | - Marcella La Noce
- Department of Experimental Medicine - University of Campania "L. Vanvitelli", Via S. M. di Costantinopoli, 16, Naples 80138, Italy
| | - Virginia Tirino
- Department of Experimental Medicine - University of Campania "L. Vanvitelli", Via S. M. di Costantinopoli, 16, Naples 80138, Italy
| | - Gianpaolo Papaccio
- Department of Experimental Medicine - University of Campania "L. Vanvitelli", Via S. M. di Costantinopoli, 16, Naples 80138, Italy
| | - Maria Lepore
- Department of Experimental Medicine - University of Campania "L. Vanvitelli", Via S. M. di Costantinopoli, 16, Naples 80138, Italy
| | - Nadia Diano
- Department of Experimental Medicine - University of Campania "L. Vanvitelli", Via S. M. di Costantinopoli, 16, Naples 80138, Italy.
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Talukdar PD, Chatterji U. Transcriptional co-activators: emerging roles in signaling pathways and potential therapeutic targets for diseases. Signal Transduct Target Ther 2023; 8:427. [PMID: 37953273 PMCID: PMC10641101 DOI: 10.1038/s41392-023-01651-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/27/2023] [Accepted: 09/10/2023] [Indexed: 11/14/2023] Open
Abstract
Specific cell states in metazoans are established by the symphony of gene expression programs that necessitate intricate synergic interactions between transcription factors and the co-activators. Deregulation of these regulatory molecules is associated with cell state transitions, which in turn is accountable for diverse maladies, including developmental disorders, metabolic disorders, and most significantly, cancer. A decade back most transcription factors, the key enablers of disease development, were historically viewed as 'undruggable'; however, in the intervening years, a wealth of literature validated that they can be targeted indirectly through transcriptional co-activators, their confederates in various physiological and molecular processes. These co-activators, along with transcription factors, have the ability to initiate and modulate transcription of diverse genes necessary for normal physiological functions, whereby, deregulation of such interactions may foster tissue-specific disease phenotype. Hence, it is essential to analyze how these co-activators modulate specific multilateral processes in coordination with other factors. The proposed review attempts to elaborate an in-depth account of the transcription co-activators, their involvement in transcription regulation, and context-specific contributions to pathophysiological conditions. This review also addresses an issue that has not been dealt with in a comprehensive manner and hopes to direct attention towards future research that will encompass patient-friendly therapeutic strategies, where drugs targeting co-activators will have enhanced benefits and reduced side effects. Additional insights into currently available therapeutic interventions and the associated constraints will eventually reveal multitudes of advanced therapeutic targets aiming for disease amelioration and good patient prognosis.
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Affiliation(s)
- Priyanka Dey Talukdar
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, West Bengal, India
| | - Urmi Chatterji
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
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Liu X, Liu Y, Tang L, Du C. Inhibition of farnesyl pyrophosphate synthase alleviates cardiomyopathy in diabetic rat. Cell Cycle 2023; 22:666-679. [PMID: 36310380 PMCID: PMC9980694 DOI: 10.1080/15384101.2022.2139126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 09/26/2022] [Accepted: 10/18/2022] [Indexed: 11/03/2022] Open
Abstract
This study investigated the effects of ibandronate (IBN) on cardiomyopathy remodeling in diabetic rats. A rat model of diabetic cardiomyopathy (DCM) was established by supplementing them with a high-calorie diet combined with a low dose of streptozotocin (STZ). The diabetic rats received IBN (5 µg/kg per day) or normal saline subcutaneously for 16 weeks. The hematoxylin and eosin (H&E) and Masson's trichrome staining were performed for evaluating the myocardial morphologies of the rats. Echocardiography and cardiac catheter were performed to assess their cardiac functional parameters. The protein levels of connective tissue growth factor (CTGF), farnesyl pyrophosphate synthase (FPPS), and mitogen-activated protein kinase (MAPK) were determined using Western blot analysis. RhoA activation was detected using a small GTP protease-linked immunosorbent assay (GLISA). The diabetic rats showed the development of moderate hyperglycemia, insulin resistance, hyperlipidemia, myocardial fibrosis, FPPS overexpression, cardiac systolic, and diastolic dysfunction. Inhibiting the FPPS could ameliorate myocardial hypertrophy and fibrosis. These anatomical findings were accompanied by a significant improvement in heart function. Furthermore, the inhibition of FPPS, the increased activation of RhoA, and phosphorylation of p38 and extracellular signal-regulated kinase (ERK)1/2 in DCM decreased significantly with the treatment of IBN. This study for the first time demonstrated that the upregulation of FPPS expression might be involved in diabetic myocardial remodeling in diabetes mellitus (DM). In addition, IBN might exert its inhibitory effects on myocardial tissue remodeling by suppressing the RhoA/ERK1/2 and RhoA/p38 MAPK pathways in DCM.
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Affiliation(s)
- Xiaowei Liu
- Department of Cardiology, Zhejiang Hospital, Hangzhou, P. R. China
| | - Yajun Liu
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, P. R. China
| | - Lijiang Tang
- Department of Cardiology, Zhejiang Hospital, Hangzhou, P. R. China
| | - Changqing Du
- Department of Cardiology, Zhejiang Hospital, Hangzhou, P. R. China
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The Role of Senescent Cells in Acquired Drug Resistance and Secondary Cancer in BRAFi-Treated Melanoma. Cancers (Basel) 2021; 13:cancers13092241. [PMID: 34066966 PMCID: PMC8125319 DOI: 10.3390/cancers13092241] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/30/2021] [Accepted: 05/02/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Advances in melanoma treatment include v-Raf murine sarcoma viral oncogene homolog B (BRAF) inhibitors that target the predominant oncogenic mutation found in malignant melanoma. Despite initial success of the BRAF inhibitor (BRAFi) therapies, resistance and secondary cancer often occur. Mechanisms of resistance and secondary cancer rely on upregulation of pro-survival pathways that circumvent senescence. The repeated identification of a cellular senescent phenotype throughout melanoma progression demonstrates the contribution of senescent cells in resistance and secondary cancer development. Incorporating senotherapeutics in melanoma treatment may offer a novel approach for potentially improving clinical outcome. Abstract BRAF is the most common gene mutated in malignant melanoma, and predominately it is a missense mutation of codon 600 in the kinase domain. This oncogenic BRAF missense mutation results in constitutive activation of the mitogen-activate protein kinase (MAPK) pro-survival pathway. Several BRAF inhibitors (BRAFi) have been developed to specifically inhibit BRAFV600 mutations that improve melanoma survival, but resistance and secondary cancer often occur. Causal mechanisms of BRAFi-induced secondary cancer and resistance have been identified through upregulation of MAPK and alternate pro-survival pathways. In addition, overriding of cellular senescence is observed throughout the progression of disease from benign nevi to malignant melanoma. In this review, we discuss melanoma BRAF mutations, the genetic mechanism of BRAFi resistance, and the evidence supporting the role of senescent cells in melanoma disease progression, drug resistance and secondary cancer. We further highlight the potential benefit of targeting senescent cells with senotherapeutics as adjuvant therapy in combating melanoma.
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Platelet-Activating Factor-Receptor Signaling Mediates Targeted Therapies-Induced Microvesicle Particles Release in Lung Cancer Cells. Int J Mol Sci 2020; 21:ijms21228517. [PMID: 33198218 PMCID: PMC7696385 DOI: 10.3390/ijms21228517] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/06/2020] [Accepted: 11/09/2020] [Indexed: 12/25/2022] Open
Abstract
Microvesicle particles (MVP) secreted by a variety of cell types in response to reactive oxygen species (ROS)-generating pro-oxidative stressors have been implicated in modifying the cellular responses including the sensitivity to therapeutic agents. Our previous studies have shown that expression of a G-protein coupled, platelet-activating factor-receptor (PAFR) pathway plays critical roles in pro-oxidative stressors-mediated cancer growth and MVP release. As most therapeutic agents act as pro-oxidative stressors, the current studies were designed to determine the role of the PAFR signaling in targeted therapies (i.e., gefitinib and erlotinib)-mediated MVP release and underlying mechanisms using PAFR-expressing human A549 and H1299 non-small cell lung cancer (NSCLC) cell lines. Our studies demonstrate that both gefitinib and erlotinib generate ROS in a dose-dependent manner in a process blocked by antioxidant and PAFR antagonist, verifying their pro-oxidative stressor’s ability, and the role of the PAFR in this effect. We observed that these targeted therapies induce MVP release in a dose- and time-dependent manner, similar to a PAFR-agonist, carbamoyl-PAF (CPAF), and PAFR-independent agonist, phorbol myristate acetate (PMA), used as positive controls. To confirm the PAFR dependency, we demonstrate that siRNA-mediated PAFR knockdown or PAFR antagonist significantly blocked only targeted therapies- and CPAF-mediated but not PMA-induced MVP release. The use of pharmacologic inhibitor strategy suggested the involvement of the lipid ceramide-generating enzyme, acid sphingomyelinase (aSMase) in MVP biogenesis, and observed that regardless of the stimuli used, aSMase inhibition significantly blocked MVP release. As mitogen-activated protein kinase (MAPK; ERK1/2 and p38) pathways crosstalk with PAFR, their inhibition also significantly attenuated targeted therapies-mediated MVP release. These findings indicate that PAFR signaling could be targeted to modify cellular responses of targeted therapies in lung cancer cells.
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Li Z, Xu R, Zhang X, Shen J, Chen G, Zou T, Yu X. Interleukin-22 modulates cisplatin sensitivity of osteosarcoma cells by regulating the STAT3 signaling pathway. Exp Ther Med 2020; 19:1379-1387. [PMID: 32010312 PMCID: PMC6966104 DOI: 10.3892/etm.2019.8352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 11/15/2019] [Indexed: 11/06/2022] Open
Abstract
The present study aimed to investigate the regulatory mechanisms by which interleukin (IL)-22 regulates cisplatin (DDP) sensitivity in osteosarcoma cells. Firstly, reverse transcription-quantitative (RT-q) PCR and western blotting demonstrated that IL-22 expression was significantly increased in osteosarcoma tissues and cell lines compared with the adjacent normal tissues and the normal osteoblast hFOB1.19 cells. Subsequently, the MG63 osteosarcoma cell line and cisplatin-resistant MG63/DDP osteosarcoma cell line were treated with different concentrations of cisplatin (2.5, 5.0, 10, 20, 40 and 80 µg/ml), and the half maximal inhibitory concentration (IC50) was calculated based on the MTT assay. The results showed that the IC50 of DDP in MG63/DDP cells was significantly higher than that in MG63 cells. Furthermore, IL-22 expression was higher in MG63/DDP cells compared with MG63 cells. Subsequently, the effects of IL-22 downregulation and overexpression on MG63/DDP and MG63 cells were assessed using the MTT assay, flow cytometry, RT-qPCR and western blotting. The IL-22 small interfering (si) RNA in MG63/DDP cells significantly decreased the IC50 of DDP and decreased the cell viability of MG63/DDP cells. Furthermore, IL-22 RNA interference decreased BCl-2 expression and phosphorylation of STAT3, induced apoptosis, and increased the expression of Bax and cleaved caspase-3. The IL-22 overexpression plasmid had opposite effects to the observations in IL-22 siRNA-transfected MG63 cells. Overall, the present study indicated that IL-22 regulated the cell viability and apoptosis of osteosarcoma cells by regulating the activation of the STAT3 signaling pathway and affecting the expression of apoptosis-associated genes, and thereby mediating the sensitivity of osteosarcoma cells to cisplatin.
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Affiliation(s)
- Zhiqiang Li
- Department of Orthopedics, Nanjing Medical University Affiliated Suzhou Hospital (Suzhou Municipal Hospital), Suzhou, Jiangsu 215002, P.R. China
| | - Renjie Xu
- Department of Orthopedics, Nanjing Medical University Affiliated Suzhou Hospital (Suzhou Municipal Hospital), Suzhou, Jiangsu 215002, P.R. China
| | - Xiangxin Zhang
- Department of Orthopedics, Nanjing Medical University Affiliated Suzhou Hospital (Suzhou Municipal Hospital), Suzhou, Jiangsu 215002, P.R. China
| | - Jun Shen
- Department of Orthopedics, Nanjing Medical University Affiliated Suzhou Hospital (Suzhou Municipal Hospital), Suzhou, Jiangsu 215002, P.R. China
| | - Guangxiang Chen
- Department of Orthopedics, Nanjing Medical University Affiliated Suzhou Hospital (Suzhou Municipal Hospital), Suzhou, Jiangsu 215002, P.R. China
| | - Tianming Zou
- Department of Orthopedics, Nanjing Medical University Affiliated Suzhou Hospital (Suzhou Municipal Hospital), Suzhou, Jiangsu 215002, P.R. China
| | - Xiao Yu
- Department of Orthopedics, Nanjing Medical University Affiliated Suzhou Hospital (Suzhou Municipal Hospital), Suzhou, Jiangsu 215002, P.R. China
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Cho IA, You SJ, Kang KR, Kim SG, Oh JS, You JS, Lee GJ, Seo YS, Kim DK, Kim CS, Lee SY, Kim JS. Biochanin-A induces apoptosis and suppresses migration in FaDu human pharynx squamous carcinoma cells. Oncol Rep 2017; 38:2985-2992. [DOI: 10.3892/or.2017.5953] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 08/31/2017] [Indexed: 11/05/2022] Open
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