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Peng Z, Yi Y, Nie Y, Wang T, Tang J, Hong S, Liu Y, Huang W, Sun S, Tan H, Wu M. Softening the tumor matrix through cholesterol depletion breaks the physical barrier for enhanced antitumor therapy. J Control Release 2024; 371:29-42. [PMID: 38763389 DOI: 10.1016/j.jconrel.2024.05.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 05/21/2024]
Abstract
The tumor develops defense tactics, including conversing the mechanical characteristics of tumor cells and their surrounding environment. A recent study reported that cholesterol depletion stiffens tumor cells, which could enhance adaptive T-cell immunotherapy. However, it remains unclear whether reducing the cholesterol in tumor cells contributes to re-educating the stiff tumor matrix, which serves as a physical barrier against drug penetration. Herein, we found that depleting cholesterol from tumor cells can demolish the intratumor physical barrier by disrupting the mechanical signal transduction between tumor cells and the extracellular matrix through the destruction of lipid rafts. This disruption allows nanoparticles (H/S@hNP) to penetrate deeply, resulting in improved photodynamic treatment. Our research also indicates that cholesterol depletion can inhibit the epithelial-mesenchymal transition and repolarize tumor-associated macrophages from M2 to M1, demonstrating the essential role of cholesterol in tumor progression. Overall, this study reveals that a cholesterol-depleted, softened tumor matrix reduces the difficulty of drug penetration, leading to enhanced antitumor therapeutics.
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Affiliation(s)
- Zhangwen Peng
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China
| | - Yunfei Yi
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China
| | - Yichu Nie
- Department of Translational Medicine Research Institute, First People's Hospital of Foshan, Foshan 528000, China
| | - Tianqi Wang
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China
| | - Jia Tang
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China
| | - Sheng Hong
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China
| | - Yuanqi Liu
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China
| | - Wenxin Huang
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China
| | - Shengjie Sun
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China
| | - Hui Tan
- Center for Child Care and Mental Health (CCCMH), Shenzhen Children's Hospital, Shenzhen 518038, China.
| | - Meiying Wu
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China.
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do Nascimento RB, Cerqueira PSG, Silva JC, Fontes EK, Dos Santos EA, Dos Santos JN, Nunes FD, Rodrigues MFSD, Paiva KBS, Xavier FCDA. Cholesterol depletion induces mesenchymal properties in oral squamous cell carcinoma cell line. J Oral Pathol Med 2024; 53:246-257. [PMID: 38503722 DOI: 10.1111/jop.13524] [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: 09/19/2023] [Revised: 01/24/2024] [Accepted: 02/16/2024] [Indexed: 03/21/2024]
Abstract
BACKGROUND Cholesterol in cell membranes is crucial for cell signaling, adhesion, and migration. Membranes feature cholesterol-rich caveolae with caveolin proteins, playing roles in epithelial-mesenchymal transition and cancer progression. Despite elevated cholesterol levels in tumors, its precise function and the effects of its depletion in oral squamous cell carcinoma remain unclear. The aim of this study was to evaluate the influence of cholesterol depletion in oral squamous cell carcinoma cell line and epithelial-mesenchymal transition process. METHODS Cholesterol depletion was induced on SCC-9 cells by methyl-β-cyclodextrin and cell viability, proliferation, apoptosis, and colony formation capacities were evaluated. Gene and protein expressions were evaluated by reverse transcription polymerase chain reaction (RT-qPCR) and Western Blot, respectively, and cell sublocalization was assessed by immunofluorescence. RESULTS Cholesterol depletion resulted in alteration of oral squamous cell carcinoma cell morphology at different concentrations of methyl-β-cyclodextrin, as well as decreased cell proliferation and viability rates. Analysis of CAV1 transcript expression revealed increased gene expression in the treated SCC-9 during the 24 h period, at different concentrations of methyl-β-cyclodextrin: 5 , 7.5, 10, and 15 mM, in relation to parental SCC-9. CAV1 protein expression was increased, with subsequent dose-dependent decrease. A statistically significant difference was observed in samples treated with 5 mM of methyl-β-cyclodextrin (p = 0.02, Kruskal-Wallis test). The immunofluorescence assay showed lower cytoplasmic and membrane labeling intensity in the treated samples for CAV1. CONCLUSION These findings indicate the modulation of cholesterol as a possible mechanism underlying the regulation of these molecules and activation of epithelial-mesenchymal transition in oral squamous cell carcinoma.
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Affiliation(s)
- Rebeca Barros do Nascimento
- Postgraduate Program in Dentistry and Health, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
| | | | - Jamerson Carvalho Silva
- Postgraduate Program in Dentistry and Health, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Elisa Kauark Fontes
- Postgraduate Program in Dentistry and Health, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Elias Almeida Dos Santos
- Postgraduate Program in Dentistry and Health, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Jean Nunes Dos Santos
- Laboratory of Oral and Maxillofacial Pathology, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Fábio Daumas Nunes
- Department of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | - Katiúcia Batista Silva Paiva
- Laboratory of Extracellular Matrix Biology and Cellular Interaction, Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Flávia Caló de Aquino Xavier
- Laboratory of Oral and Maxillofacial Pathology, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
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Wang Y, Ma X, Xu E, Huang Z, Yang C, Zhu K, Dong Y, Zhang C. Identifying squalene epoxidase as a metabolic vulnerability in high-risk osteosarcoma using an artificial intelligence-derived prognostic index. Clin Transl Med 2024; 14:e1586. [PMID: 38372422 PMCID: PMC10875711 DOI: 10.1002/ctm2.1586] [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: 11/10/2023] [Revised: 01/24/2024] [Accepted: 01/31/2024] [Indexed: 02/20/2024] Open
Abstract
BACKGROUND Osteosarcoma (OSA) presents a clinical challenge and has a low 5-year survival rate. Currently, the lack of advanced stratification models makes personalized therapy difficult. This study aims to identify novel biomarkers to stratify high-risk OSA patients and guide treatment. METHODS We combined 10 machine-learning algorithms into 101 combinations, from which the optimal model was established for predicting overall survival based on transcriptomic profiles for 254 samples. Alterations in transcriptomic, genomic and epigenomic landscapes were assessed to elucidate mechanisms driving poor prognosis. Single-cell RNA sequencing (scRNA-seq) unveiled genes overexpressed in OSA cells as potential therapeutic targets, one of which was validated via tissue staining, knockdown and pharmacological inhibition. We characterized changes in multiple phenotypes, including proliferation, colony formation, migration, invasion, apoptosis, chemosensitivity and in vivo tumourigenicity. RNA-seq and Western blotting elucidated the impact of squalene epoxidase (SQLE) suppression on signalling pathways. RESULTS The artificial intelligence-derived prognostic index (AIDPI), generated by our model, was an independent prognostic biomarker, outperforming clinicopathological factors and previously published signatures. Incorporating the AIDPI with clinical factors into a nomogram improved predictive accuracy. For user convenience, both the model and nomogram are accessible online. Patients in the high-AIDPI group exhibited chemoresistance, coupled with overexpression of MYC and SQLE, increased mTORC1 signalling, disrupted PI3K-Akt signalling, and diminished immune infiltration. ScRNA-seq revealed high expression of MYC and SQLE in OSA cells. Elevated SQLE expression correlated with chemoresistance and worse outcomes in OSA patients. Therapeutically, silencing SQLE suppressed OSA malignancy and enhanced chemosensitivity, mediated by cholesterol depletion and suppression of the FAK/PI3K/Akt/mTOR pathway. Furthermore, the SQLE-specific inhibitor FR194738 demonstrated anti-OSA effects in vivo and exhibited synergistic effects with chemotherapeutic agents. CONCLUSIONS AIDPI is a robust biomarker for identifying the high-risk subset of OSA patients. The SQLE protein emerges as a metabolic vulnerability in these patients, providing a target with translational potential.
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Affiliation(s)
- Yongjie Wang
- Department of Orthopaedic SurgeryShanghai Tenth People's Hospital, School of Medicine, Tongji UniversityShanghaiP. R. China
- Institute of Bone Tumor Affiliated to Tongji University School of MedicineShanghaiP. R. China
- Proteomics and Cancer Cell Signaling Group, German Cancer Research Center (DKFZ)HeidelbergGermany
| | - Xiaolong Ma
- Department of Orthopaedic SurgeryShanghai Tenth People's Hospital, School of Medicine, Tongji UniversityShanghaiP. R. China
- Institute of Bone Tumor Affiliated to Tongji University School of MedicineShanghaiP. R. China
| | - Enjie Xu
- Department of Orthopaedic SurgeryShanghai Tenth People's Hospital, School of Medicine, Tongji UniversityShanghaiP. R. China
- Institute of Bone Tumor Affiliated to Tongji University School of MedicineShanghaiP. R. China
| | - Zhen Huang
- Department of Orthopaedic SurgeryShanghai Tenth People's Hospital, School of Medicine, Tongji UniversityShanghaiP. R. China
- Institute of Bone Tumor Affiliated to Tongji University School of MedicineShanghaiP. R. China
| | - Chen Yang
- State Key Laboratory of Oncogenes and Related GenesShanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of MedicineShanghaiP. R. China
| | - Kunpeng Zhu
- Department of Orthopaedic SurgeryShanghai Tenth People's Hospital, School of Medicine, Tongji UniversityShanghaiP. R. China
- Institute of Bone Tumor Affiliated to Tongji University School of MedicineShanghaiP. R. China
| | - Yang Dong
- Department of OrthopaedicsShanghai Jiao Tong University Affiliated Sixth People's HospitalShanghai Jiao Tong UniversityShanghaiP. R. China
| | - Chunlin Zhang
- Department of Orthopaedic SurgeryShanghai Tenth People's Hospital, School of Medicine, Tongji UniversityShanghaiP. R. China
- Institute of Bone Tumor Affiliated to Tongji University School of MedicineShanghaiP. R. China
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Cellular signals integrate cell cycle and metabolic control in cancer. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2023; 135:397-423. [PMID: 37061338 DOI: 10.1016/bs.apcsb.2023.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Growth factors are the small peptides that can promote growth, differentiation, and survival of most living cells. However, aberrant activation of receptor tyrosine kinases by GFs can generate oncogenic signals, resulting in oncogenic transformation. Accumulating evidence support a link between GF/RTK signaling through the major signaling pathways, Ras/Erk and PI3K/Akt, and cell cycle progression. In response to GF signaling, the quiescent cells in the G0 stage can re-enter the cell cycle and become the proliferative stage. While in the proliferative stage, tumor cells undergo profound changes in their metabolism to support biomass production and bioenergetic requirements. Accumulating data show that the cell cycle regulators, specifically cyclin D, cyclin B, Cdk2, Cdk4, and Cdk6, and anaphase-promoting complex/cyclosome (APC/C-Cdh1) play critical roles in modulating various metabolic pathways. These cell cycle regulators can regulate metabolic enzyme activities through post-translational mechanisms or the transcriptional factors that control the expression of the metabolic genes. This fine-tune control allows only the relevant metabolic pathways to be active in a particular phase of the cell cycle, thereby providing suitable amounts of biosynthetic precursors available during the proliferative stage. The imbalance of metabolites in each cell cycle phase can induce cell cycle arrest followed by p53-induced apoptosis.
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Raeisi M, Zehtabi M, Velaei K, Fayyazpour P, Aghaei N, Mehdizadeh A. Anoikis in cancer: The role of lipid signaling. Cell Biol Int 2022; 46:1717-1728. [DOI: 10.1002/cbin.11896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 12/20/2022]
Affiliation(s)
- Mortaza Raeisi
- Hematology and Oncology Research Center Tabriz University of Medical Sciences Tabriz Iran
| | - Mojtaba Zehtabi
- Hematology and Oncology Research Center Tabriz University of Medical Sciences Tabriz Iran
| | - Kobra Velaei
- Department of Anatomical Sciences Tabriz University of Medical Sciences Tabriz Iran
| | - Parisa Fayyazpour
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine Tabriz University of Medical Sciences Tabriz Iran
| | - Negar Aghaei
- Department of Psycology, Faculty of Medicine Tabriz University of Medical Sciences Tabriz Iran
- Imam Sajjad Hospital Tabriz Azad University Tabriz Iran
| | - Amir Mehdizadeh
- Hematology and Oncology Research Center Tabriz University of Medical Sciences Tabriz Iran
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Takii S, Wu J, Okamura D. The amount of membrane cholesterol required for robust cell adhesion and proliferation in serum-free condition. PLoS One 2022; 17:e0259482. [PMID: 35857759 PMCID: PMC9299302 DOI: 10.1371/journal.pone.0259482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 04/11/2022] [Indexed: 11/19/2022] Open
Abstract
Serum-containing medium is widely used to support cell attachment, stable growth and serial passaging of various cancer cell lines. However, the presence of cholesterols and lipids in serum greatly hinders the analysis of the effects of cholesterol depletion on cells in culture. In this study, we developed a defined serum-free culture condition accessible to a variety of different types of adherent cancer cells. We tested different factors that are considered essential for cell culture and various extracellular matrix for plate coating, and found cells cultured in Dulbecco’s Modified Eagle’s Medium (DMEM) basal media supplemented with Albumin (BSA) and insulin-transferrin-selenium-ethanolamine (ITS-X) on fibronectin-precoated plate (called as “DA-X condition”) showed comparable proliferation and survival to those in a serum-containing medium. Interestingly, we observed that DA-X condition could be adapted to a wide variety of adherent cancer cell lines, which enabled the analysis of how cholesterol depletion affected cancer cells in culture. Mechanistically, we found the beneficial effects of the DA-X condition in part can be attributed to the appropriate level of membrane cholesterol, and fibronectin-mediated signaling plays an important role in the suppression of cholesterol production.
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Affiliation(s)
- Shino Takii
- Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nara, Japan
| | - Jun Wu
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
- Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States of America
| | - Daiji Okamura
- Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nara, Japan
- * E-mail:
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7
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Leveraging cellular mechano-responsiveness for cancer therapy. Trends Mol Med 2021; 28:155-169. [PMID: 34973934 DOI: 10.1016/j.molmed.2021.11.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/30/2021] [Accepted: 11/30/2021] [Indexed: 12/21/2022]
Abstract
Cells sense the biophysical properties of the tumor microenvironment (TME) and adopt these signals in their development, progression, and metastatic dissemination. Recent work highlights the mechano-responsiveness of cells in tumors and the underlying mechanisms. Furthermore, approaches to mechano-modulating diverse types of cell have emerged aiming to inhibit tumor growth and metastasis. These include targeting mechanosensitive machineries in cancer cells to induce apoptosis, intervening matrix stiffening incurred by cancer-associated fibroblasts (CAFs) in both primary and metastatic tumor sites, and modulating matrix mechanics to improve immune cell therapeutic efficacy. This review is envisaged to help scientists and clinicians in cancer research to advance understanding of the cellular mechano-responsiveness in TME, and to harness these concepts for cancer mechanotherapies.
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Manohar S, Ding D, Jiang H, Li L, Chen GD, Kador P, Salvi R. Combined antioxidants and anti-inflammatory therapies fail to attenuate the early and late phases of cyclodextrin-induced cochlear damage and hearing loss. Hear Res 2021; 414:108409. [PMID: 34953289 DOI: 10.1016/j.heares.2021.108409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/08/2021] [Accepted: 12/06/2021] [Indexed: 11/04/2022]
Abstract
Niemann-Pick C1 (NPC1) is a fatal neurodegenerative disease caused by aberrant cholesterol metabolism. The progression of the disease can be slowed by removing excess cholesterol with high-doses of 2-hyroxypropyl-beta-cyclodextrin (HPβCD). Unfortunately, HPβCD causes hearing loss; the initial first phase involves a rapid destruction of outer hair cells (OHCs) while the second phase, occurring 4-6 weeks later, involves the destruction of inner hair cells (IHCs), pillar cells, collapse of the organ of Corti and spiral ganglion neuron degeneration. To determine whether the first and/or second phase of HPβCD-induced cochlear damage is linked, in part, to excess oxidative stress or neuroinflammation, rats were treated with a single-dose of 3000 mg/kg HPβCD alone or together with one of two combination therapies. Each combination therapy was administered from 2-days before to 6-weeks after the HPβCD treatment. Combination 1 consisted of minocycline, an antibiotic that suppresses neuroinflammation, and HK-2, a multifunctional redox modulator that suppresses oxidative stress. Combination 2 was comprised of minocycline plus N-acetyl cysteine (NAC), which upregulates glutathione, a potent antioxidant. To determine if either combination therapy could prevent HPβCD-induced hearing impairment and cochlear damage, distortion product otoacoustic emissions (DPOAE) were measured to assess OHC function and the cochlear compound action potential (CAP) was measured to assess the function of IHCs and auditory nerve fibers. Cochleograms were prepared to quantify the amount of OHC, IHC and pillar cell (PC) loss. HPβCD significantly reduced DPOAE and CAP amplitudes and caused significant OHC, IHC and OPC losses with losses greater in the high-frequency base of the cochlea than the apex. Neither minocycline + HK-2 (MIN+ HK-2) nor minocycline + NAC (MIN+NAC) prevented the loss of DPOAEs, CAPs, OHCs, IHCs or IPCs caused by HPβCD. These results suggest that oxidative stress and neuroinflammation are unlikely to play major roles in mediating the first or second phase of HPβCD-induced cochlear damage. Thus, HPβCD-induced ototoxicity must be mediated by some other unknown cell-death pathway possibly involving loss of trophic support from damaged support cells or disrupted cholesterol metabolism.
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Affiliation(s)
- Senthilvelan Manohar
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Dalian Ding
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Haiyan Jiang
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Li Li
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Guang-Di Chen
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Peter Kador
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Richard Salvi
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA.
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Liu A, Xie H, Li R, Ren L, Yang B, Dai L, Lu W, Liu B, Ren D, Zhang X, Chen Q, Huang Y, Shi K. Silencing ZIC2 abrogates tumorigenesis and anoikis resistance of non-small cell lung cancer cells by inhibiting Src/FAK signaling. MOLECULAR THERAPY-ONCOLYTICS 2021; 22:195-208. [PMID: 34514099 PMCID: PMC8424131 DOI: 10.1016/j.omto.2021.05.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/19/2021] [Indexed: 12/16/2022]
Abstract
Aberrant expression of the zinc finger protein (ZIC) family has been extensively reported to contribute to progression and metastasis in multiple human cancers. However, the functional roles and underlying mechanisms of ZIC2 in non-small cell lung cancer (NSCLC) are largely unknown. In this study, ZIC2 expression was evaluated using qRT-PCR, western blot, and immunohistochemistry, respectively. Animal experiments in vivo and functional assays in vitro were performed to investigate the role of ZIC2 in NSCLC. Luciferase assays and chromatin immunoprecipitation (ChIP) were carried out to explore the underlying target involved in the roles of ZIC2 in NSCLC. Here, we reported that ZIC2 was upregulated in NSCLC tissues, and high expression of ZIC2 predicted worse overall and progression-free survival of NSCLC patients. Silencing ZIC2 repressed tumorigenesis and reduced the anoikis resistance of NSCLC cells. Mechanical investigation further revealed that silencing ZIC2 transcriptionally inhibited Src expression and inactivated steroid receptor coactivator/focal adhesion kinase signaling, which further attenuated the anoikis resistance of NSCLC cells. Importantly, our results showed that the number of circulating tumor cells (CTCs) was positively correlated with ZIC2 expression in NSCLC patients. Collectively, our findings unravel a novel mechanism implicating ZIC2 in NSCLC, which will facilitate the development of anti-tumor strategies in NSCLC.
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Affiliation(s)
- Aibin Liu
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Huayan Xie
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Ronggang Li
- Department of Pathology, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-sen University, Jiangmen 529030, China
| | - Liangliang Ren
- Clinical Experimental Center, Jiangmen Key Laboratory of Clinical Biobanks and Translational Research, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-sen University, Jiangmen 529030, China
| | - Baishuang Yang
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Longxia Dai
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Wenjie Lu
- Clinical Experimental Center, Jiangmen Key Laboratory of Clinical Biobanks and Translational Research, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-sen University, Jiangmen 529030, China
| | - Baoyi Liu
- Clinical Experimental Center, Jiangmen Key Laboratory of Clinical Biobanks and Translational Research, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-sen University, Jiangmen 529030, China
| | - Dong Ren
- Clinical Experimental Center, Jiangmen Key Laboratory of Clinical Biobanks and Translational Research, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-sen University, Jiangmen 529030, China
- Dongguan Key Laboratory of Medical Bioactive Molecular Developmental and Translational Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan 523808, China
- Collaborative Innovation Center for Antitumor Active Substance Research and Development, Guangdong Medical University, Zhanjiang 524023, China
| | - Xin Zhang
- Clinical Experimental Center, Jiangmen Key Laboratory of Clinical Biobanks and Translational Research, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-sen University, Jiangmen 529030, China
- Dongguan Key Laboratory of Medical Bioactive Molecular Developmental and Translational Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan 523808, China
- Collaborative Innovation Center for Antitumor Active Substance Research and Development, Guangdong Medical University, Zhanjiang 524023, China
| | - Qiong Chen
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Yanming Huang
- Clinical Experimental Center, Jiangmen Key Laboratory of Clinical Biobanks and Translational Research, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-sen University, Jiangmen 529030, China
- Corresponding author: Yanming Huang, Clinical Experimental Center, Jiangmen Key Laboratory of Clinical Biobanks and Translational Research, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-sen University, Jiangmen 529030, China.
| | - Ke Shi
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
- Corresponding author: Ke Shi, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha 410008, China.
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Ding D, Jiang H, Manohar S, Liu X, Li L, Chen GD, Salvi R. Spatiotemporal Developmental Upregulation of Prestin Correlates With the Severity and Location of Cyclodextrin-Induced Outer Hair Cell Loss and Hearing Loss. Front Cell Dev Biol 2021; 9:643709. [PMID: 34109172 PMCID: PMC8181405 DOI: 10.3389/fcell.2021.643709] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/08/2021] [Indexed: 11/24/2022] Open
Abstract
2-Hyroxypropyl-beta-cyclodextrin (HPβCD) is being used to treat Niemann-Pick C1, a fatal neurodegenerative disease caused by abnormal cholesterol metabolism. HPβCD slows disease progression, but unfortunately causes severe, rapid onset hearing loss by destroying the outer hair cells (OHC). HPβCD-induced damage is believed to be related to the expression of prestin in OHCs. Because prestin is postnatally upregulated from the cochlear base toward the apex, we hypothesized that HPβCD ototoxicity would spread from the high-frequency base toward the low-frequency apex of the cochlea. Consistent with this hypothesis, cochlear hearing impairments and OHC loss rapidly spread from the high-frequency base toward the low-frequency apex of the cochlea when HPβCD administration shifted from postnatal day 3 (P3) to P28. HPβCD-induced histopathologies were initially confined to the OHCs, but between 4- and 6-weeks post-treatment, there was an unexpected, rapid and massive expansion of the lesion to include most inner hair cells (IHC), pillar cells (PC), peripheral auditory nerve fibers, and spiral ganglion neurons at location where OHCs were missing. The magnitude and spatial extent of HPβCD-induced OHC death was tightly correlated with the postnatal day when HPβCD was administered which coincided with the spatiotemporal upregulation of prestin in OHCs. A second, massive wave of degeneration involving IHCs, PC, auditory nerve fibers and spiral ganglion neurons abruptly emerged 4–6 weeks post-HPβCD treatment. This secondary wave of degeneration combined with the initial OHC loss results in a profound, irreversible hearing loss.
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Affiliation(s)
- Dalian Ding
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Haiyan Jiang
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Senthilvelan Manohar
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Xiaopeng Liu
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Li Li
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Guang-Di Chen
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Richard Salvi
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
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11
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Greenlee JD, Subramanian T, Liu K, King MR. Rafting Down the Metastatic Cascade: The Role of Lipid Rafts in Cancer Metastasis, Cell Death, and Clinical Outcomes. Cancer Res 2021; 81:5-17. [PMID: 32999001 PMCID: PMC7952000 DOI: 10.1158/0008-5472.can-20-2199] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/01/2020] [Accepted: 09/21/2020] [Indexed: 11/16/2022]
Abstract
Lipid rafts are tightly packed, cholesterol- and sphingolipid-enriched microdomains within the plasma membrane that play important roles in many pathophysiologic processes. Rafts have been strongly implicated as master regulators of signal transduction in cancer, where raft compartmentalization can promote transmembrane receptor oligomerization, shield proteins from enzymatic degradation, and act as scaffolds to enhance intracellular signaling cascades. Cancer cells have been found to exploit these mechanisms to initiate oncogenic signaling and promote tumor progression. This review highlights the roles of lipid rafts within the metastatic cascade, specifically within tumor angiogenesis, cell adhesion, migration, epithelial-to-mesenchymal transition, and transendothelial migration. In addition, the interplay between lipid rafts and different modes of cancer cell death, including necrosis, apoptosis, and anoikis, will be described. The clinical role of lipid raft-specific proteins, caveolin and flotillin, in assessing patient prognosis and evaluating metastatic potential of various cancers will be presented. Collectively, elucidation of the complex roles of lipid rafts and raft components within the metastatic cascade may be instrumental for therapeutic discovery to curb prometastatic processes.
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Affiliation(s)
- Joshua D Greenlee
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
| | - Tejas Subramanian
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
| | - Kevin Liu
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
| | - Michael R King
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee.
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12
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Zhang J, Li X, Yu H, Larre I, Dube PR, Kennedy DJ, Tang WHW, Westfall K, Pierre SV, Xie Z, Chen Y. Regulation of Na/K-ATPase expression by cholesterol: isoform specificity and the molecular mechanism. Am J Physiol Cell Physiol 2020; 319:C1107-C1119. [PMID: 32997514 DOI: 10.1152/ajpcell.00083.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have reported that the reduction in plasma membrane cholesterol could decrease cellular Na/K-ATPase α1-expression through a Src-dependent pathway. However, it is unclear whether cholesterol could regulate other Na/K-ATPase α-isoforms and the molecular mechanisms of this regulation are not fully understood. Here we used cells expressing different Na/K-ATPase α isoforms and found that membrane cholesterol reduction by U18666A decreased expression of the α1-isoform but not the α2- or α3-isoform. Imaging analyses showed the cellular redistribution of α1 and α3 but not α2. Moreover, U18666A led to redistribution of α1 to late endosomes/lysosomes, while the proteasome inhibitor blocked α1-reduction by U18666A. These results suggest that the regulation of the Na/K-ATPase α-subunit by cholesterol is isoform specific and α1 is unique in this regulation through the endocytosis-proteasome pathway. Mechanistically, loss-of-Src binding mutation of A425P in α1 lost its capacity for regulation by cholesterol. Meanwhile, gain-of-Src binding mutations in α2 partially restored the regulation. Furthermore, through studies in caveolin-1 knockdown cells, as well as subcellular distribution studies in cell lines with different α-isoforms, we found that Na/K-ATPase, Src, and caveolin-1 worked together for the cholesterol regulation. Taken together, these new findings reveal that the putative Src-binding domain and the intact Na/K-ATPase/Src/caveolin-1 complex are indispensable for the isoform-specific regulation of Na/K-ATPase by cholesterol.
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Affiliation(s)
- Jue Zhang
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia.,Blood Research Institute, Versiti, Milwaukee, Wisconsin
| | - Xin Li
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hui Yu
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Isabel Larre
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia
| | - Prabhatchandra R Dube
- Department of Medicine, The University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - David J Kennedy
- Department of Medicine, The University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - W H Wilson Tang
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio
| | - Kristen Westfall
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio
| | - Sandrine V Pierre
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia
| | - Zijian Xie
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia
| | - Yiliang Chen
- Blood Research Institute, Versiti, Milwaukee, Wisconsin.,Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
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13
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Wei W, Wang Y, Li M, Yang M. Water-soluble fraction of particulate matter <2.5 μm promoted lung epithelia cells apoptosis by regulating the expression of caveolin-1 and Krüppel-like factor 5. J Appl Toxicol 2020; 41:410-420. [PMID: 33090513 DOI: 10.1002/jat.4052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/05/2020] [Accepted: 08/05/2020] [Indexed: 12/14/2022]
Abstract
Ambient fine particulate matter of <2.5 μm (PM2.5) has been linked to morbidity and mortality from respiratory and cardiovascular diseases. Lung epithelial cells bear the brunt of PM2.5 exposure. In the present study, we found that exposure of A549 cells to the water-soluble fraction of PM2.5 (WS-PM2.5) promoted the expression and internalization of caveolin-1. Caveolin-1 knockdown restrained the endocytosis of WS-PM2.5. In addition, WS-PM2.5 accumulation in the cells induced the phosphorylation of serine/threonine protein kinase B (AKT) and nuclear factor κ-light-chain enhancer of activated B cells (NFκB), as well as the expression of Krüppel-like factor 5 (KLF5). Inhibiting activation of AKT and NFκB also partly reduced WS-PM2.5 concentration in cells, but KLF5 knockdown did not affect the intracellular accumulation of WS-PM2.5. KLF5 knockdown suppressed cytochrome P450 family 1 subfamily A member 1 (CYP1A1) expression and activated caspase 3. Luciferase reporter assay and chromatin immunoprecipitation assay showed that KLF5 positively regulated the transcription of KLF5. These results suggested that caveolin-1 was required for the endocytosis of WS-PM2.5. Intracellular accumulation of WS-PM2.5 activated AKT and NFκB, which facilitated WS-PM2.5 endocytosis. WS-PM2.5 accumulation also induced KLF5 expression, increasing the transcriptional expression of CYP1A1, which contributed to activate caspase 3.
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Affiliation(s)
- Wei Wei
- Shandong provincial Eco-environment Monitoring Center, Jinan, China
| | - Yuan Wang
- Department of Neurology, Shandong provincial Hospital, Affiliated to Shandong First Medical University, Jinan, China
| | - Min Li
- Department of Cardiology, Shandong provincial Hospital, Affiliated to Shandong First Medical University, Jinan, China
| | - Ming Yang
- Department of Ultrasound, Shandong provincial Hospital, Affiliated to Shandong First Medical University, Jinan, China
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14
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Liang D, Osoro EK, Tan S, Lan X, Zhu W, Wu L, Du X, Li D, Lu S. Effects and Mechanisms of Autophagy Induced by Solubilized-Cholesterol in Hepatocytes: A Comparative Study Among Solvents. Cell Biochem Biophys 2020; 78:357-366. [PMID: 32441028 DOI: 10.1007/s12013-020-00917-2] [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: 03/29/2019] [Accepted: 05/07/2020] [Indexed: 11/25/2022]
Abstract
Cholesterol, the principal sterol in mammalian cells, has been reported to play a role in the pathogenesis of several diseases through autophagy. Due to its insoluble characteristic, all in vitro cholesterol experiments are performed using dimethyl sulphoxide, methyl-β-cyclodextrin, and ethanol co-solvents. To investigate whether the types of solvents have different effects on cholesterol-induced cell behaviors, we analyzed the effects and mechanisms of autophagy induced by solubilized-cholesterol in hepatic cells. We found that both solubilized-cholesterol and involved solvents could induce autophagy. Solubilized-cholesterol could further enhance the LC3-II expression with or without the pre-treatment with lysosomal blockers compared with the single-solvent groups, indicating that cholesterol could sensitize cells to solvents-induced autophagy. Besides, solubilized-cholesterol and single-solvent treatment could repress the activation of AKT-mTOR pathway. Furthermore, cholesterol solubilized in methyl-β-cyclodextrin could induce apoptosis while other solubilized-cholesterol or single solvent groups could not, suggesting that different dissolve methods may affect the cytotoxic of cholesterol. These results strongly suggest that the effect of solvent should be taken into consideration in further in vitro cholesterol studies.
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Affiliation(s)
- Dong Liang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Beijing, China
| | - Ezra K Osoro
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Beijing, China
| | - Shuai Tan
- Department of Medicine, Solna, Karolinska Universitetssjukhuset, Stockholm, Sweden
| | - Xi Lan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Beijing, China
| | - Wenhua Zhu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Beijing, China
| | - Litao Wu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Beijing, China
| | - Xiaojuan Du
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Beijing, China
| | - Dongmin Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China.
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Beijing, China.
| | - Shemin Lu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China.
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education of China, Beijing, China.
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15
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Mo CF, Li J, Yang SX, Guo HJ, Liu Y, Luo XY, Wang YT, Li MH, Li JY, Zou Q. IQGAP1 promotes anoikis resistance and metastasis through Rac1-dependent ROS accumulation and activation of Src/FAK signalling in hepatocellular carcinoma. Br J Cancer 2020; 123:1154-1163. [PMID: 32632148 PMCID: PMC7525663 DOI: 10.1038/s41416-020-0970-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 04/01/2020] [Accepted: 06/18/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Hepatitis B virus (HBV) has a crucial role in the progression of hepatocellular carcinoma (HCC). Tumour cells must develop anoikis resistance in order to survive before metastasis. This study aimed to investigate the mechanism of IQGAP1 in HBV-mediated anoikis evasion and metastasis in HCC cells. METHODS IQGAP1 expression was detected by immunohistochemistry, real-time PCR and immunoblot analysis. Lentiviral-mediated stable upregulation or knockdown of IGAQP1, immunoprecipitation, etc. were used in function and mechanism study. RESULTS IQGAP1 was markedly upregulated in HBV-positive compared with HBV-negative HCC cells and tissues. IQGAP1 was positively correlated to poor prognosis of HBV-associated HCC patients. IQGAP1 overexpression significantly enhanced the anchorage-independent growth and metastasis, whereas IQGAP1-deficient HCC cells are more sensitive to anoikis. Mechanistically, we found that HBV-induced ROS enhanced the association of IQGAP1 and Rac1 that activated Rac1, leading to phosphorylation of Src/FAK pathway. Antioxidants efficiently inhibited IQGAP1-mediated anoikis resistance and metastasis. CONCLUSIONS Our study indicated an important mechanism by which upregulated IQGAP1 by HBV promoted anoikis resistance, migration and invasion of HCC cells through Rac1-dependent ROS accumulation and activation of Src/FAK signalling, suggesting IQGAP1 as a prognostic indicator and a novel therapeutic target in HCC patients with HBV infection.
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Affiliation(s)
- Chun-Fen Mo
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China.
| | - Jun Li
- Department of Gastroenterology, The first affiliated hospital of Chengdu medical college, Chengdu, China
| | - Shu-Xia Yang
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Hui-Jie Guo
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Yang Liu
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Xing-Yan Luo
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Yan-Tang Wang
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Min-Hui Li
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Jing-Yi Li
- Department of Urology, The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, China. .,School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, China.
| | - Qiang Zou
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China.
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16
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Jiang Y, Liu S, Shen S, Guo H, Huang H, Wei W. Methyl-β-cyclodextrin inhibits EV-D68 virus entry by perturbing the accumulation of virus particles and ICAM-5 in lipid rafts. Antiviral Res 2020; 176:104752. [PMID: 32101770 DOI: 10.1016/j.antiviral.2020.104752] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/19/2020] [Accepted: 02/20/2020] [Indexed: 11/27/2022]
Abstract
Enterovirus D68 (EV-D68) is a member of the Picornavirus family and a causative agent of respiratory diseases in children. The incidence of EV-D68 infection has increased worldwide in recent years. Thus far, there are no approved antiviral agents or vaccines for EV-D68. Here, we show that methyl-β-cyclodextrin (MβCD), a common drug that disrupts lipid rafts, specifically inhibits EV-D68 infection without producing significant cytotoxicity at virucidal concentrations. The addition of exogenous cholesterol attenuated the anti-EV-D68 activity of MβCD. MβCD treatment had a weak influence on the attachment of viral particles to the cell membrane but significantly inhibited EV-D68 entry into host cells. We demonstrated that EV-D68 facilitated the translocation of the viral receptor ICAM-5 to membrane rafts in infected cells. The colocalization of viral particles with ICAM-5 in lipid rafts was thoroughly abolished in cells after treatment with MβCD. Finally, we showed that MβCD inhibited the replication of isolated circulating EV-D68 strains. In summary, our results demonstrate that MβCD suppresses EV-D68 replication by perturbing the accumulation of virus particles and ICAM-5 in lipid rafts. This mechanism represents a promising strategy for drug development.
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Affiliation(s)
- Yunhe Jiang
- Institute of Virology and AIDS Research, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, China; Department of Pathogenobiology, College of Basic Medical Science, Jilin University, Changchun, Jilin, 130021, China
| | - Shunan Liu
- Institute of Virology and AIDS Research, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, China
| | - Siyu Shen
- Institute of Virology and AIDS Research, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, China
| | - Haoran Guo
- Institute of Virology and AIDS Research, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, China
| | - Honglan Huang
- Department of Pathogenobiology, College of Basic Medical Science, Jilin University, Changchun, Jilin, 130021, China.
| | - Wei Wei
- Institute of Virology and AIDS Research, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, China; Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, Jilin Province, 130021, China.
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17
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Hu Y, Huang H, Chen M, Shen Y. Non-localized Increase in Lipid Content and Striation Pattern Formation Characterize the Sonoporated Plasma Membrane. ULTRASOUND IN MEDICINE & BIOLOGY 2019; 45:3005-3017. [PMID: 31421866 DOI: 10.1016/j.ultrasmedbio.2019.07.411] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 07/09/2019] [Accepted: 07/14/2019] [Indexed: 06/10/2023]
Abstract
Eukaryotic cells can survive sonoporation and repair their plasma membrane wounds. However, it is not clear how the repaired plasma membranes will differ from the intact ones. To answer this question, we used high-resolution confocal microscopy and scanning electron microscopy to study plasma membrane lipid alterations induced by sonoporation. First, we found that the wound-induced increase in membrane lipid content was not limited to the sonoporation sites. The degree of lipid increase was dependent on pore distance, calcium influx and pore size. Second, we observed interesting lipid striation patterns on the sonoporated plasma membranes. This patterning effect was reversible in the cell subjected to small-scale sonoporation and could be recognized using digital image orientation analysis. Third, we showed that actin stress fibers underneath the plasma membrane hindered the addition and the protrusion of lipids to produce the patterning effect. Our findings demonstrated that the sonoporated and repaired plasma membranes have distinct lipid distribution characteristics.
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Affiliation(s)
- Yaxin Hu
- School of Biomedical Engineering, Health Science Center, Shenzhen University, Guangdong, China; National-regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen, Guangdong, China.
| | - Haoqiang Huang
- School of Biomedical Engineering, Health Science Center, Shenzhen University, Guangdong, China; National-regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen, Guangdong, China
| | - Mengting Chen
- School of Biomedical Engineering, Health Science Center, Shenzhen University, Guangdong, China; National-regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen, Guangdong, China
| | - Yuanyuan Shen
- School of Biomedical Engineering, Health Science Center, Shenzhen University, Guangdong, China; National-regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen, Guangdong, China
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18
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Yun UJ, Lee JH, Shim J, Yoon K, Goh SH, Yi EH, Ye SK, Lee JS, Lee H, Park J, Lee IH, Kim YN. Anti-cancer effect of doxorubicin is mediated by downregulation of HMG-Co A reductase via inhibition of EGFR/Src pathway. J Transl Med 2019; 99:1157-1172. [PMID: 30700846 DOI: 10.1038/s41374-019-0193-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 11/30/2018] [Accepted: 12/19/2018] [Indexed: 02/06/2023] Open
Abstract
Doxorubicin is a widely used DNA damage-inducing anti-cancer drug. However, its use is limited by its dose-dependent side effects, such as cardiac toxicity. Cholesterol-lowering statin drugs increase the efficacy of some anti-cancer drugs. Cholesterol is important for cell growth and a critical component of lipid rafts, which are plasma membrane microdomains important for cell signaling. 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase (HMG-CR) is a critical enzyme in cholesterol synthesis. Here, we show that doxorubicin downregulated HMG-CR protein levels and thus reduced levels of cholesterol and lipid rafts. Cholesterol addition attenuated doxorubicin-induced cell death, and cholesterol depletion enhanced it. Reduction of HMG-CR activity by simvastatin, a statin that acts as an HMG-CR inhibitor, or by siRNA-mediated HMG-CR knockdown enhanced doxorubicin cytotoxicity. Doxorubicin-induced HMG-CR downregulation was associated with inactivation of the EGFR-Src pathway. Furthermore, a high-cholesterol-diet attenuated the anti-cancer activity of doxorubicin in a tumor xenograft mouse model. In a multivulva model of Caenorhabditis elegans expressing an active-EGFR mutant, doxorubicin decreased hyperplasia more efficiently in the absence than in the presence of cholesterol. These data indicate that EGFR/Src/HMG-CR is a new pathway mediating doxorubicin-induced cell death and that cholesterol control could be combined with doxorubicin treatment to enhance efficacy and thus reduce side effects.
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Affiliation(s)
- Un-Jung Yun
- Comparative Biomedicine Research Branch, Division of Translational Science, National Cancer Center, Goyang, Korea
| | - Ji-Hye Lee
- Comparative Biomedicine Research Branch, Division of Translational Science, National Cancer Center, Goyang, Korea
| | - Jaegal Shim
- Comparative Biomedicine Research Branch, Division of Translational Science, National Cancer Center, Goyang, Korea
| | - Kyungsil Yoon
- Comparative Biomedicine Research Branch, Division of Translational Science, National Cancer Center, Goyang, Korea
| | - Sung-Ho Goh
- Therapeutic Target Discovery Branch, Division of Precision Medicine, National Cancer Center, Goyang, Korea
| | - Eun Hee Yi
- Department of Pharmacology, College of Medicine, Seoul National University, Seoul, Korea
| | - Sang-Kyu Ye
- Department of Pharmacology, College of Medicine, Seoul National University, Seoul, Korea
| | - Jae-Seon Lee
- Department of Molecular medicine, College of Medicine, Inha University, Incheon, Korea
| | - Hyunji Lee
- Department of Pharmacology and Medical Science, Metabolic Syndrome and Cell Signaling Laboratory, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Jongsun Park
- Department of Pharmacology and Medical Science, Metabolic Syndrome and Cell Signaling Laboratory, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, Korea
| | - In Hye Lee
- Department of Life Science, Ewha Womans University, Seoul, Korea.
| | - Yong-Nyun Kim
- Comparative Biomedicine Research Branch, Division of Translational Science, National Cancer Center, Goyang, Korea.
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19
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Kim T, Lei L, Seong J, Suh J, Jang Y, Jung SH, Sun J, Kim D, Wang Y. Matrix Rigidity-Dependent Regulation of Ca 2+ at Plasma Membrane Microdomains by FAK Visualized by Fluorescence Resonance Energy Transfer. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1801290. [PMID: 30828523 PMCID: PMC6382294 DOI: 10.1002/advs.201801290] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 10/20/2018] [Indexed: 05/13/2023]
Abstract
The dynamic regulation of signal transduction at plasma membrane microdomains remains poorly understood due to limitations in current experimental approaches. Genetically encoded biosensors based on fluorescent resonance energy transfer (FRET) can provide high spatiotemporal resolution for imaging cell signaling networks. Here, distinctive regulation of focal adhesion kinase (FAK) and Ca2+ signals are visualized at different membrane microdomains by FRET using membrane-targeting biosensors. It is shown that rigidity-dependent FAK and Ca2+ signals in human mesenchymal stem cells (hMSCs) are selectively activated at detergent-resistant membrane (DRM or rafts) microdomains during the cell-matrix adhesion process, with minimal activities at non-DRM domains. The rigidity-dependent Ca2+ signal at the DRM microdomains is downregulated by either FAK inhibition or lipid raft disruption, suggesting that FAK and lipid raft integrity mediate the in situ Ca2+ activation. It is further revealed that transient receptor potential subfamily M7 (TRPM7) participates in the mobilization of Ca2+ signals within DRM regions. Thus, the findings provide insights into the underlying mechanisms that regulate Ca2+ and FAK signals in hMSCs under different mechanical microenvironments.
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Affiliation(s)
- Tae‐Jin Kim
- Neuroscience Program and the Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
- Department of Bioengineering and Institute of Stem Cell and Regenerative MedicineUniversity of WashingtonSeattleWA98195USA
- Department of Biological SciencesIntegrated Biological Scienceand Institute of Systems BiologyPusan National UniversityPusan46241Republic of Korea
| | - Lei Lei
- Department of BioengineeringInstitute of Engineering in MedicineUniversity of California at San DiegoLa JollaCA92093USA
| | - Jihye Seong
- Neuroscience Program and the Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
- Convergence Research Center for Diagnosis Treatment Care of DementiaKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Jung‐Soo Suh
- Department of Integrated Biological SciencePusan National UniversityPusan46241Republic of Korea
| | - Yoon‐Kwan Jang
- Department of Integrated Biological SciencePusan National UniversityPusan46241Republic of Korea
| | - Sang Hoon Jung
- Natural Products Research CenterKorea Institute of Science and Technology (KIST)Gangneung25451Republic of Korea
| | - Jie Sun
- Department of Cell Biology and Bone Marrow Transplantation Center of the First Affiliated HospitalZhejiang University School of MedicineHangzhou310058China
- Institute of HematologyZhejiang University and Zhejiang Engineering Laboratory for Stem Cell and ImmunotherapyHangzhou310058China
| | - Deok‐Ho Kim
- Department of Bioengineering and Institute of Stem Cell and Regenerative MedicineUniversity of WashingtonSeattleWA98195USA
| | - Yingxiao Wang
- Neuroscience Program and the Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
- Department of BioengineeringInstitute of Engineering in MedicineUniversity of California at San DiegoLa JollaCA92093USA
- Department of BioengineeringUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
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20
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Signaling pathway of globo-series glycosphingolipids and β1,3-galactosyltransferase V (β3GalT5) in breast cancer. Proc Natl Acad Sci U S A 2019; 116:3518-3523. [PMID: 30808745 DOI: 10.1073/pnas.1816946116] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The globo-series glycosphingolipids (GSLs) SSEA3, SSEA4, and Globo-H specifically expressed on cancer cells are found to correlate with tumor progression and metastasis, but the functional roles of these GSLs and the key enzyme β1,3-galactosyltransferase V (β3GalT5) that converts Gb4 to SSEA3 remain largely unclear. Here we show that the expression of β3GalT5 significantly correlates with tumor progression and poor survival in patients, and the globo-series GSLs in breast cancer cells form a complex in membrane lipid raft with caveolin-1 (CAV1) and focal adhesion kinase (FAK) which then interact with AKT and receptor-interacting protein kinase (RIP), respectively. Knockdown of β3GalT5 disrupts the complex and induces apoptosis through dissociation of RIP from the complex to interact with the Fas death domain (FADD) and trigger the Fas-dependent pathway. This finding provides a link between SSEA3/SSEA4/Globo-H and the FAK/CAV1/AKT/RIP complex in tumor progression and apoptosis and suggests a direction for the treatment of breast cancer, as demonstrated by the combined use of antibodies against Globo-H and SSEA4.
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21
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ZNF32 induces anoikis resistance through maintaining redox homeostasis and activating Src/FAK signaling in hepatocellular carcinoma. Cancer Lett 2018; 442:271-278. [PMID: 30439540 DOI: 10.1016/j.canlet.2018.09.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 08/07/2018] [Accepted: 09/06/2018] [Indexed: 02/06/2023]
Abstract
Tumor cells need to attain anoikis resistance to survive prior to metastasis making it a vital trait of malignancy. The molecular mechanism by which hepatocellular carcinoma (HCC) cells resist anoikis remains not fully understood. Here, we report that ZNF32 expression is markedly upregulated in HCC cells upon detachment. Enforced ZNF32 expression significantly promotes the anchorage-independent growth capability of HepG2 and Huh7 cells, whereas knockdown of ZNF32 results in increased apoptosis of HCC cells after detachment. Mechanistically, we demonstrate that ZNF32 overexpression suppresses the reactive oxygen species (ROS) accumulation and maintains mitochondrial membrane potential, leading to ATP, GSH and NADPH elevation and promoting HCC cell survival in response to suspension. Moreover, ZNF32 enhances the phosphorylation and activation of Src/FAK signaling. Src and FAK inhibitors effectively reverse ZNF32-induced anoikis resistance in HCC cells. Collectively, our findings not only reveal a novel and important mechanism by which ZNF32 contributes to anoikis resistance through maintaining redox homeostasis and activating Src/FAK signaling, but also suggest the potential therapeutic value of ZNF32 in HCC patients.
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WISP-3/CCN6 inhibits apoptosis by regulating caspase pathway after hyperoxia in lung epithelial cells. Gene 2018; 673:82-87. [PMID: 29920361 DOI: 10.1016/j.gene.2018.06.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 03/29/2018] [Accepted: 06/15/2018] [Indexed: 12/16/2022]
Abstract
Cell death is a normal phenomenon in the course of biological development, moreover, which is also a prominent feature in lung exposed to hyperoxia. Severe hypoxia occurs in ALI/ARDS patients, who generally require high concentration oxygen therapy assisted by mechanical ventilation. Nevertheless, high oxygen can cause excessive reactive oxygen species (ROS), leading to apoptosis in lung epithelial cells, which has been reported in our previous study. Herein, the correlation between increments of ROS and CCN6 expression was negative in CCN6-mediated the mitochondria dependent, intrinsic apoptotic pathway. Our latest research explained that CCN6 can inhibit caspase-8 mediated extrinsic apoptotic pathway to protect cells from hyperoxia-induced apoptosis. As demonstrated by Western Blot Analysis, Caspase 8 cleavage and Caspase 3 cleavage in CCN6-depleted cells exceeded the control group treated with high oxygen (48 h). And deletion of CCN6 enhanced caspase-8 activation after hyperoxia shown by Flow Cytometry. Although, it is unclear how CCN6 participated in the regulation of apoptotic pathways, the future targeted therapy drugs inhibiting CCN6 may be useful in the treatment of ALI/ARDS.
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23
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Kumar M, Irungbam K, Kataria M. Depletion of membrane cholesterol compromised caspase-8 imparts in autophagy induction and inhibition of cell migration in cancer cells. Cancer Cell Int 2018; 18:23. [PMID: 29467593 PMCID: PMC5819249 DOI: 10.1186/s12935-018-0520-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 02/12/2018] [Indexed: 01/08/2023] Open
Abstract
Background Cholesterol in lipid raft plays crucial role on cancer cell survival during metastasis of cancer cells. Cancer cells are reported to enrich cholesterol in lipid raft which make them more susceptible to cell death after cholesterol depletion than normal cells. Methyl-β-cyclodextrin (MβCD), an amphipathic polysaccharide known to deplete the membrane cholesterol, induces cell death selectively in cancer cells. Present work was designed to identify the major form of programmed cell death in membrane cholesterol depleted cancer cells (MDA-MB 231 and 4T1) and its impact on migration efficiency of cancer cells. Methods Membrane cholesterol alteration and morphological changes in 4T1 and MDA-MB 231 cancer cells by MβCD were measured by fluorescent microscopy. Cell death and cell proliferation were observed by PI, AO/EB and MTT assay respectively. Programme cell death was confirmed by flow cytometer. Caspase activation was assessed by MTT and PI after treatments with Z-VAD [OME]-FMK, mitomycin c and cycloheximide. Necroptosis, autophagy, pyroptosis and paraptosis were examined by cell proliferation assay and flow cytometry. Relative quantitation of mRNA of caspase-8, necroptosis and autophagy genes were performed. Migration efficiency of cancer cells were determined by wound healing assay. Results We found caspase independent cell death in cholesterol depleted MDA-MB 231 cells which was reduced by (3-MA) an autophagy inhibitor. Membrane cholesterol depletion neither induces necroptosis, paraptosis nor pyroptosis in MDA-MB 231 cells. Subsequent activation of caspase-8 after co-incubation of mitomycin c and cycloheximide separately, restored the cell viability in cholesterol depleted MDA-MB 231 cells. Down regulation of caspase-8 mRNA in cholesterol depleted cancer cells ensures that caspase-8 indirectly promotes the induction of autophagy. In another experiment we have demonstrated that membrane cholesterol depletion reduces the migration efficiency in cancer cells. Conclusion Together our experimental data suggests that membrane cholesterol is the crucial for the recruitment and activation of caspase-8 as well as its non-apoptotic functions in cancer cells. Enriched cholesterol in lipid raft of cancer cells may be regulating the cross talk between caspase-8 and autophagy machineries to promote their survival and migration. Therefore it can be explored to understand and address the issues of chemotherapeutic and drugs resistance.
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Affiliation(s)
- Mukesh Kumar
- Indian Veterinary Research Institute, Bareilly, India
| | | | - Meena Kataria
- Indian Veterinary Research Institute, Bareilly, India
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24
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Houdebine L, Gallelli CA, Rastelli M, Sampathkumar NK, Grenier J. Effect of physical exercise on brain and lipid metabolism in mouse models of multiple sclerosis. Chem Phys Lipids 2017; 207:127-134. [PMID: 28606714 DOI: 10.1016/j.chemphyslip.2017.06.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/06/2017] [Accepted: 06/07/2017] [Indexed: 12/11/2022]
Abstract
Multiple sclerosis (MS) is a central nervous demyelinating disease characterized by cyclic loss and repair of myelin sheaths associated with chronic inflammation and neuronal loss. This degenerative pathology is accompanied by modified levels of oxysterols (oxidative derivatives of cholesterol, implicated in cholesterol metabolism), highlighted in the brain, blood and cerebrospinal fluid of MS patients. The pathological accumulation of such derivatives is thought to participate in the onset and progression of the disease through their implication in inflammation, oxidative stress, demyelination and neurodegeneration. In this context, physical exercise is envisaged as a complementary resource to ameliorate therapeutic strategies. Indeed, physical activity exerts beneficial effects on neuronal plasticity, decreases inflammation and oxidative stress and improves blood-brain integrity in extents that could be beneficial for brain health. The present review attempts to summarize the available data on the positive effect of physical exercise to highlight possible links between physical activity and modulation of cholesterol/oxysterol homeostasis in MS.
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Affiliation(s)
- Léo Houdebine
- Paris Descartes University, INSERM UMRS 1124, France
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25
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Kim HJ, Kwon S, Nam SH, Jung JW, Kang M, Ryu J, Kim JE, Cheong JG, Cho CY, Kim S, Song DG, Kim YN, Kim TY, Jung MK, Lee KM, Pack CG, Lee JW. Dynamic and coordinated single-molecular interactions at TM4SF5-enriched microdomains guide invasive behaviors in 2- and 3-dimensional environments. FASEB J 2017; 31:1461-1481. [PMID: 28073834 DOI: 10.1096/fj.201600944rr] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Accepted: 12/12/2016] [Indexed: 11/11/2022]
Abstract
Membrane proteins sense extracellular cues and transduce intracellular signaling to coordinate directionality and speed during cellular migration. They are often localized to specific regions, as with lipid rafts or tetraspanin-enriched microdomains; however, the dynamic interactions of tetraspanins with diverse receptors within tetraspanin-enriched microdomains on cellular surfaces remain largely unexplored. Here, we investigated effects of tetraspan(in) TM4SF5 (transmembrane 4 L6 family member 5)-enriched microdomains (T5ERMs) on the directionality of cell migration. Physical association of TM4SF5 with epidermal growth factor receptor (EGFR) and integrin α5 was visualized by live fluorescence cross-correlation spectroscopy and higher-resolution microscopy at the leading edge of migratory cells, presumably forming TM4SF5-enriched microdomains. Whereas TM4SF5 and EGFR colocalized at the migrating leading region more than at the rear, TM4SF5 and integrin α5 colocalized evenly throughout cells. Cholesterol depletion and disruption in TM4SF5 post-translational modifications, including N-glycosylation and palmitoylation, altered TM4SF5 interactions and cellular localization, which led to less cellular migration speed and directionality in 2- or 3-dimensional conditions. TM4SF5 controlled directional cell migration and invasion, and importantly, these TM4SF5 functions were dependent on cholesterol, TM4SF5 post-translational modifications, and EGFR and integrin α5 activity. Altogether, we showed that TM4SF5 dynamically interacted with EGFR and integrin α5 in migratory cells to control directionality and invasion.-Kim, H.-J., Kwon, S., Nam, S. H., Jung, J. W., Kang, M., Ryu, J., Kim, J. E., Cheong, J.-G., Cho, C. Y., Kim, S., Song, D.-G., Kim, Y.-N., Kim, T. Y., Jung, M.-K., Lee, K.-M., Pack, C.-G., Lee, J. W. Dynamic and coordinated single-molecular interactions at TM4SF5-enriched microdomains guide invasive behaviors in 2- and 3-dimensional environments.
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Affiliation(s)
- Hye-Jin Kim
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Sojung Kwon
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Seo Hee Nam
- Interdisciplinary Program in Genetic Engineering, Seoul National University, Seoul, South Korea
| | - Jae Woo Jung
- Interdisciplinary Program in Genetic Engineering, Seoul National University, Seoul, South Korea
| | - Minkyung Kang
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Jihye Ryu
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Ji Eon Kim
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Jin-Gyu Cheong
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Chang Yun Cho
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Somi Kim
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Dae-Geun Song
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | | | - Tai Young Kim
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Min-Kyo Jung
- Department of Convergence Medicine, University of Ulsan College of Medicine and Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Kyung-Min Lee
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Chan-Gi Pack
- Department of Convergence Medicine, University of Ulsan College of Medicine and Asan Institute for Life Sciences, Asan Medical Center, Seoul, South Korea
| | - Jung Weon Lee
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, South Korea; .,Interdisciplinary Program in Genetic Engineering, Seoul National University, Seoul, South Korea
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Ma J, Fu G, Wu J, Han S, Zhang L, Yang M, Yu Y, Zhang M, Lin Y, Wang Y. 4-cholesten-3-one suppresses lung adenocarcinoma metastasis by regulating translocation of HMGB1, HIF1α and Caveolin-1. Cell Death Dis 2016; 7:e2372. [PMID: 27899819 PMCID: PMC5059879 DOI: 10.1038/cddis.2016.281] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/09/2016] [Accepted: 08/10/2016] [Indexed: 12/15/2022]
Abstract
Metastasis is a great challenge in lung adenocarcinoma (ADC) therapy. Cholesterol has been implicated in ADC metastasis. 4-cholesten-3-one, as cholesterol metabolite and analog, can substitute membrane cholesterol and increase membrane fluidity. In this study, we explored the possibility that 4-cholesten-3-one inhibited ADC metastasis. Low-dose 4-cholesten-3-one significantly restrained ADC cells migration and invasion with little effects on cells viabilities. Further investigation showed that 4-cholesten-3-one promoted ROS generation, which transiently activated AMPKα1, increased HIF1α expression, reduced Bcl-2 expression and caused autophagy. AMPKα1 knockdown partly suppressed 4-cholesten-3-one-induced autophagy but, neither prevented 4-cholesten-3-one-induced upregulation of HIF1α or downregulation of Bcl-2. 4-cholesten-3-one-induced autophagy facilitated the release of HMGB1 from nuclei to cytoplasm, blocking nuclear translocation of HIF1α and activation of MMP2 and MMP9. Also, 4-cholesten-3-one induced time-dependent phosphorylation of caveolin-1, Akt and NF-κB. With increasing treatment time, 4-cholesten-3-one accelerated caveolin-1 internalization, but reduced the phosphorylation of Akt and NF-κB, and inhibited the expression of snail and twist. These data suggested that 4-cholesten-3-one could be a potential candidate for anti-metastasis of lung adenocarcinoma.
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Affiliation(s)
- Jinben Ma
- Department of Anesthesiology, Shandong provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Guobin Fu
- Department of Oncology, Shandong provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Jing Wu
- Department of Anesthesiology, Shandong provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Shaoxian Han
- Department of thoracic surgery, Shandong chest Hospital, Jinan 250021, China
| | - Lishan Zhang
- Department of Hand and Foot Surgery, Shandong provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Ming Yang
- Department of Ultrasound, Shandong provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Yong Yu
- Department of Ultrasound, Shandong provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Mengyuan Zhang
- Department of Anesthesiology, Shandong provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Yanliang Lin
- Department of Center Laboratory, Shandong provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Yibing Wang
- Department of burn and plastic surgery, Shandong provincial Hospital Affiliated to Shandong University, Jinan 250021, China
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27
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Hegyi Z, Homolya L. Functional Cooperativity between ABCG4 and ABCG1 Isoforms. PLoS One 2016; 11:e0156516. [PMID: 27228027 PMCID: PMC4882005 DOI: 10.1371/journal.pone.0156516] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 05/16/2016] [Indexed: 11/18/2022] Open
Abstract
ABCG4 belongs to the ABCG subfamily, the members of which are half transporters composed of a single transmembrane and a single nucleotide-binding domain. ABCG proteins have a reverse domain topology as compared to other mammalian ABC transporters, and have to form functional dimers, since the catalytic sites for ATP binding and hydrolysis, as well as the transmembrane domains are composed of distinct parts of the monomers. Here we demonstrate that ABCG4 can form homodimers, but also heterodimers with its closest relative, ABCG1. Both the full-length and the short isoforms of ABCG1 can dimerize with ABCG4, whereas the ABCG2 multidrug transporter is unable to form a heterodimer with ABCG4. We also show that contrary to that reported in some previous studies, ABCG4 is predominantly localized to the plasma membrane. While both ABCG1 and ABCG4 have been suggested to be involved in lipid transport or regulation, in accordance with our previous results regarding the long version of ABCG1, here we document that the expression of both the short isoform of ABCG1 as well as ABCG4 induce apoptosis in various cell types. This apoptotic effect, as a functional read-out, allowed us to demonstrate that the dimerization between these half transporters is not only a physical interaction but functional cooperativity. Given that ABCG4 is predominantly expressed in microglial-like cells and endothelial cells in the brain, our finding of ABCG4-induced apoptosis may implicate a new role for this protein in the clearance mechanisms within the central nervous system.
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Affiliation(s)
- Zoltán Hegyi
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - László Homolya
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
- * E-mail:
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28
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Yokoo M, Kubota Y, Motoyama K, Higashi T, Taniyoshi M, Tokumaru H, Nishiyama R, Tabe Y, Mochinaga S, Sato A, Sueoka-Aragane N, Sueoka E, Arima H, Irie T, Kimura S. 2-Hydroxypropyl-β-Cyclodextrin Acts as a Novel Anticancer Agent. PLoS One 2015; 10:e0141946. [PMID: 26535909 PMCID: PMC4633159 DOI: 10.1371/journal.pone.0141946] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 10/15/2015] [Indexed: 12/11/2022] Open
Abstract
2-Hydroxypropyl-β-cyclodextrin (HP-β-CyD) is a cyclic oligosaccharide that is widely used as an enabling excipient in pharmaceutical formulations, but also as a cholesterol modifier. HP-β-CyD has recently been approved for the treatment of Niemann-Pick Type C disease, a lysosomal lipid storage disorder, and is used in clinical practice. Since cholesterol accumulation and/or dysregulated cholesterol metabolism has been described in various malignancies, including leukemia, we hypothesized that HP-β-CyD itself might have anticancer effects. This study provides evidence that HP-β-CyD inhibits leukemic cell proliferation at physiologically available doses. First, we identified the potency of HP-β-CyD in vitro against various leukemic cell lines derived from acute myeloid leukemia (AML), acute lymphoblastic leukemia and chronic myeloid leukemia (CML). HP-β-CyD treatment reduced intracellular cholesterol resulting in significant leukemic cell growth inhibition through G2/M cell-cycle arrest and apoptosis. Intraperitoneal injection of HP-β-CyD significantly improved survival in leukemia mouse models. Importantly, HP-β-CyD also showed anticancer effects against CML cells expressing a T315I BCR-ABL mutation (that confers resistance to most ABL tyrosine kinase inhibitors), and hypoxia-adapted CML cells that have characteristics of leukemic stem cells. In addition, colony forming ability of human primary AML and CML cells was inhibited by HP-β-CyD. Systemic administration of HP-β-CyD to mice had no significant adverse effects. These data suggest that HP-β-CyD is a promising anticancer agent regardless of disease or cellular characteristics.
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MESH Headings
- 2-Hydroxypropyl-beta-cyclodextrin
- Animals
- Antineoplastic Agents/therapeutic use
- Antineoplastic Agents/toxicity
- Apoptosis/drug effects
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Cholesterol/analysis
- Cholesterol/metabolism
- Colorimetry
- Drug Resistance, Neoplasm/drug effects
- Fusion Proteins, bcr-abl/genetics
- Fusion Proteins, bcr-abl/metabolism
- G2 Phase Cell Cycle Checkpoints/drug effects
- Humans
- K562 Cells
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myeloid, Acute/drug therapy
- Lung/pathology
- M Phase Cell Cycle Checkpoints/drug effects
- Mice
- Mice, Inbred BALB C
- Mice, Inbred NOD
- Mice, Nude
- Mice, SCID
- Signal Transduction/drug effects
- Transplantation, Heterologous
- beta-Cyclodextrins/therapeutic use
- beta-Cyclodextrins/toxicity
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Affiliation(s)
- Masako Yokoo
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Yasushi Kubota
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
- Department of Transfusion Medicine, Saga University Hospital, Saga, Japan
- * E-mail:
| | - Keiichi Motoyama
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Taishi Higashi
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Masatoshi Taniyoshi
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hiroko Tokumaru
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Rena Nishiyama
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yoko Tabe
- Department of Clinical Laboratory Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | | | - Akemi Sato
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Naoko Sueoka-Aragane
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Eisaburo Sueoka
- Department of Transfusion Medicine, Saga University Hospital, Saga, Japan
- Department of Clinical Laboratory Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Hidetoshi Arima
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
- Program for Leading Graduate Schools “HIGO (Health life science: Interdisciplinary and Global Oriented) Program”, Kumamoto University, Kumamoto, Japan
| | - Tetsumi Irie
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
- Program for Leading Graduate Schools “HIGO (Health life science: Interdisciplinary and Global Oriented) Program”, Kumamoto University, Kumamoto, Japan
| | - Shinya Kimura
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
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29
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Corominas-Faja B, Cuyàs E, Gumuzio J, Bosch-Barrera J, Leis O, Martin ÁG, Menendez JA. Chemical inhibition of acetyl-CoA carboxylase suppresses self-renewal growth of cancer stem cells. Oncotarget 2015; 5:8306-16. [PMID: 25246709 PMCID: PMC4226684 DOI: 10.18632/oncotarget.2059] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Cancer stem cells (CSC) may take advantage of the Warburg effect-induced siphoning of metabolic intermediates into de novo fatty acid biosynthesis to increase self-renewal growth. We examined the anti-CSC effects of the antifungal polyketide soraphen A, a specific inhibitor of the first committed step of lipid biosynthesis catalyzed by acetyl-CoA carboxylase (ACACA). The mammosphere formation capability of MCF-7 cells was reduced following treatment with soraphen A in a dose-dependent manner. MCF-7 cells engineered to overexpress the oncogene HER2 (MCF-7/HER2 cells) were 5-fold more sensitive than MCF-7 parental cells to soraphen A-induced reductions in mammosphere-forming efficiency. Soraphen A treatment notably decreased aldehyde dehydrogenase (ALDH)-positive CSC-like cells and impeded the HER2's ability to increase the ALDH+-stem cell population. The following results confirmed that soraphen A-induced suppression of CSC populations occurred through ACACA-driven lipogenesis: a.) exogenous supplementation with supraphysiological concentrations of oleic acid fully rescued mammosphere formation in the presence of soraphen A and b.) mammosphere cultures of MCF-7 cells with stably silenced expression of the cytosolic isoform ACACA1, which specifically participates in de novo lipogenesis, were mostly refractory to soraphen A treatment. Our findings reveal for the first time that ACACA may constitute a previously unrecognized target for novel anti-breast CSC therapies.
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Affiliation(s)
- Bruna Corominas-Faja
- Metabolism and Cancer Group, Translational Research Laboratory, Catalan Institute of Oncology, Girona, Catalonia Spain. Girona Biomedical Research Institute (IDIBGI), Girona, Catalonia Spain
| | - Elisabet Cuyàs
- Metabolism and Cancer Group, Translational Research Laboratory, Catalan Institute of Oncology, Girona, Catalonia Spain. Girona Biomedical Research Institute (IDIBGI), Girona, Catalonia Spain
| | - Juan Gumuzio
- Fundación Inbiomed, San Sebastián, Gipuzkoa Spain
| | | | - Olatz Leis
- StemTek Therapeutics, Bilbao, Biscay Spain
| | | | - Javier A Menendez
- Metabolism and Cancer Group, Translational Research Laboratory, Catalan Institute of Oncology, Girona, Catalonia Spain. Girona Biomedical Research Institute (IDIBGI), Girona, Catalonia Spain
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30
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Zou J, Xu L, Ju Y, Zhang P, Wang Y, Zhang B. Cholesterol depletion induces ANTXR2-dependent activation of MMP-2 via ERK1/2 phosphorylation in neuroglioma U251 cell. Biochem Biophys Res Commun 2014; 452:186-90. [DOI: 10.1016/j.bbrc.2014.06.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 06/02/2014] [Indexed: 01/08/2023]
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31
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Liu J, Xian G, Li M, Zhang Y, Yang M, Yu Y, Lv H, Xuan S, Lin Y, Gao L. Cholesterol oxidase from Bordetella species promotes irreversible cell apoptosis in lung adenocarcinoma by cholesterol oxidation. Cell Death Dis 2014; 5:e1372. [PMID: 25118932 PMCID: PMC4454300 DOI: 10.1038/cddis.2014.324] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 06/24/2014] [Accepted: 06/26/2014] [Indexed: 12/28/2022]
Abstract
Cholesterol oxidase (COD), an enzyme catalyzing the oxidation of cholesterol, has been applied to track the distribution of membrane cholesterol. Little investigations about the effect of COD on tumor cells have been performed. In the present study, we provided evidence that COD from Bordetella species (COD-B), induced apoptosis of lung cancer cells in vitro and in vivo. COD-B treatment inhibited Akt and ERK1/2 phosphorylation in dose- and time-dependent manner, which was not reversed and was even aggravated by cholesterol addition. Further investigation indicated that COD-B treatment promoted the generation of reactive oxygen species (ROS) and that cholesterol addition further elevated ROS levels. Moreover, COD-B treatment resulted in JNK and p38 phosphorylation, downregulation of Bcl-2, upregulation of Bax, activated caspase-3 and cytochrome C release, which likely responded to freshly produced hydrogen peroxide that accompanied cholesterol oxidation. Catalase pretreatment could only partially prevent COD-B-induced events, suggesting that catalase inhibited H2O2-induced signal transduction but had little effect on signal pathways involved in cholesterol depletion. Our results demonstrated that COD-B led to irreversible cell apoptosis by decreasing cholesterol content and increasing ROS level. In addition, COD-B may be a promising candidate for a novel anti-tumor therapy.
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Affiliation(s)
- J Liu
- Department of General Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - G Xian
- Department of General Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - M Li
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Y Zhang
- Department of Obstetrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - M Yang
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Y Yu
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - H Lv
- Department of Obstetrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - S Xuan
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong Province 250021, China
| | - Y Lin
- Department of Center Laboratory, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - L Gao
- 1] Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong Province 250021, China [2] Department of Center Laboratory, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
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Onodera R, Motoyama K, Tanaka N, Ohyama A, Okamatsu A, Higashi T, Kariya R, Okada S, Arima H. Involvement of autophagy in antitumor activity of folate-appended methyl-β-cyclodextrin. Sci Rep 2014; 4:4417. [PMID: 24646866 PMCID: PMC3960581 DOI: 10.1038/srep04417] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 03/04/2014] [Indexed: 11/08/2022] Open
Abstract
Autophagy, the major lysosomal pathway for recycling intracellular components including organelles, is emerging as a key process regulating tumorigenesis and cancer therapy. Most recently, we newly synthesized folate-appended methyl-β-cyclodextrin (FA-M-β-CyD), and demonstrated the potential of FA-M-β-CyD as a new antitumor drug. In this study, we investigated whether anticancer activity of FA-M-β-CyD in folate receptor-α (FR-α)-positive tumor cells is involved in autophagy. In contrast to methyl-β-cyclodextrin (M-β-CyD), FA-M-β-CyD entered KB cells (FR-α (+)) through CLIC/GEEC endocytosis. No significant depression in the DNA content was observed in KB cells after treatment with FA-M-β-CyD. Additionally, the transmembrane potential of mitochondria after treatment with FA-M-β-CyD was drastically elevated. Meanwhile, FA-M-β-CyD induced the formation of autophagic vacuoles, which were partially colocalized with mitochondria, in KB cells. Taken together, these results suggest that FR-α-expressing cell-selective cytotoxic activity of FA-M-β-CyD could be mediated by the regulation of autophagy, rather than the induction of apoptosis.
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Affiliation(s)
- Risako Onodera
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Keiichi Motoyama
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Nao Tanaka
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Ayumu Ohyama
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
- Program for Leading Graduate Schools “HIGO (Health life science: Interdisciplinary and Glocal Oriented) Program”, Kumamoto University
| | - Ayaka Okamatsu
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Taishi Higashi
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Ryusho Kariya
- Division of Hematopoiesis, Center for AIDS Research, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto 860-0811, Japan
| | - Seiji Okada
- Division of Hematopoiesis, Center for AIDS Research, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto 860-0811, Japan
| | - Hidetoshi Arima
- Department of Physical Pharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
- Program for Leading Graduate Schools “HIGO (Health life science: Interdisciplinary and Glocal Oriented) Program”, Kumamoto University
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Lee EJ, Yun UJ, Koo KH, Sung JY, Shim J, Ye SK, Hong KM, Kim YN. Down-regulation of lipid raft-associated onco-proteins via cholesterol-dependent lipid raft internalization in docosahexaenoic acid-induced apoptosis. BIOCHIMICA ET BIOPHYSICA ACTA 2014; 1841:190-203. [PMID: 24120917 DOI: 10.1016/j.bbalip.2013.10.006] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 10/01/2013] [Accepted: 10/03/2013] [Indexed: 10/26/2022]
Abstract
Lipid rafts, plasma membrane microdomains, are important for cell survival signaling and cholesterol is a critical lipid component for lipid raft integrity and function. DHA is known to have poor affinity for cholesterol and it influences lipid rafts. Here, we investigated a mechanism underlying the anti-cancer effects of DHA using a human breast cancer cell line, MDA-MB-231. We found that DHA decreased cell surface levels of lipid rafts via their internalization, which was partially reversed by cholesterol addition. With DHA treatment, caveolin-1, a marker for rafts, and EGFR were colocalized with LAMP-1, a lysosomal marker, in a cholesterol-dependent manner, indicating that DHA induces raft fusion with lysosomes. DHA not only displaced several raft-associated onco-proteins, including EGFR, Hsp90, Akt, and Src, from the rafts but also decreased total levels of those proteins via multiple pathways, including the proteasomal and lysosomal pathways, thereby decreasing their activities. Hsp90 overexpression maintained its client proteins, EGFR and Akt, and attenuated DHA-induced cell death. In addition, overexpression of Akt or constitutively active Akt attenuated DHA-induced apoptosis. All these data indicate that the anti-proliferative effect of DHA is mediated by targeting of lipid rafts via decreasing cell surface lipid rafts by their internalization, thereby decreasing raft-associated onco-proteins via proteasomal and lysosomal pathways and decreasing Hsp90 chaperone function.
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Affiliation(s)
- Eun Jeong Lee
- Comparative Biomedicine Research Branch, Division of Cancer Biology, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-769, Republic of Korea
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FAK-heterozygous mice display enhanced tumour angiogenesis. Nat Commun 2013; 4:2020. [PMID: 23799510 PMCID: PMC3712492 DOI: 10.1038/ncomms3020] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Accepted: 05/17/2013] [Indexed: 12/26/2022] Open
Abstract
Genetic ablation of endothelial focal adhesion kinase (FAK) can inhibit pathological angiogenesis, suggesting that loss of endothelial FAK is sufficient to reduce neovascularization. Here we show that reduced stromal FAK expression in FAK-heterozygous mice unexpectedly enhances both B16F0 and CMT19T tumour growth and angiogenesis. We further demonstrate that cell proliferation and microvessel sprouting, but not migration, are increased in serum-stimulated FAK-heterozygous endothelial cells. FAK-heterozygous endothelial cells display an imbalance in FAK phosphorylation at pY397 and pY861 without changes in Pyk2 or Erk1/2 activity. By contrast, serum-stimulated phosphorylation of Akt is enhanced in FAK-heterozygous endothelial cells and these cells are more sensitive to Akt inhibition. Additionally, low doses of a pharmacological FAK inhibitor, although too low to affect FAK autophosphorylation in vitro, can enhance angiogenesis ex vivo and tumour growth in vivo. Our results highlight a potential novel role for FAK as a nonlinear, dose-dependent regulator of angiogenesis where heterozygous levels of FAK enhance angiogenesis.
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35
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Zhang J, Hochwald SN. The role of FAK in tumor metabolism and therapy. Pharmacol Ther 2013; 142:154-63. [PMID: 24333503 DOI: 10.1016/j.pharmthera.2013.12.003] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 11/08/2013] [Indexed: 02/06/2023]
Abstract
Focal adhesion kinase (FAK) plays a vital role in tumor cell proliferation, survival and migration. Altered metabolic pathways fuel rapid tumor growth by accelerating glucose, lipid and glutamine processing. Besides the mitogenic effects of FAK, evidence is accumulating supporting the association between hyper-activated FAK and aberrant metabolism in tumorigenesis. FAK can promote glucose consumption, lipogenesis, and glutamine dependency to promote cancer cell proliferation, motility, and survival. Clinical studies demonstrate that FAK-related alterations of tumor metabolism are associated with increased risk of developing solid tumors. Since FAK contributes to the malignant phenotype, small molecule inhibition of FAK-stimulated bioenergetic and biosynthetic processes can provide a novel approach for therapeutic intervention in tumor growth and invasion.
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Affiliation(s)
- Jianliang Zhang
- Department of Surgical Oncology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, United States
| | - Steven N Hochwald
- Department of Surgical Oncology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, United States.
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Motoyama K, Onodera R, Okamatsu A, Higashi T, Kariya R, Okada S, Arima H. Potential use of the complex of doxorubicin with folate-conjugated methyl-β-cyclodextrin for tumor-selective cancer chemotherapy. J Drug Target 2013; 22:211-219. [DOI: 10.3109/1061186x.2013.856012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Hąc-Wydro K. Studies on β-sitosterol and ceramide-induced alterations in the properties of cholesterol/sphingomyelin/ganglioside monolayers. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:2460-9. [DOI: 10.1016/j.bbamem.2013.06.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 06/23/2013] [Accepted: 06/26/2013] [Indexed: 12/20/2022]
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Wei S, Moon HG, Zheng Y, Liang X, An CH, Jin Y. Flotillin-2 modulates fas signaling mediated apoptosis after hyperoxia in lung epithelial cells. PLoS One 2013; 8:e77519. [PMID: 24204853 PMCID: PMC3799625 DOI: 10.1371/journal.pone.0077519] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 09/03/2013] [Indexed: 11/29/2022] Open
Abstract
Lipid rafts are subdomains of the cell membrane with distinct protein composition and high concentrations of cholesterol and glycosphingolipids. Raft proteins are thought to mediate diverse cellular processes including signal transduction. However, its cellular mechanisms remain unclear. Caveolin-1 (cav-1, marker protein of caveolae) has been thought as a switchboard between extracellular matrix (ECM) stimuli and intracellular signals. Flotillin-2/reggie-1(Flot-2) is another ubiquitously expressed raft protein which defines non-caveolar raft microdomains (planar raft). Its cellular function is largely uncharacterized. Our novel studies demonstrated that Flot-2, in conjunction with cav-1, played important functions on controlling cell death via regulating Fas pathways. Using Beas2B epithelial cells, we found that in contrast to cav-1, Flot-2 conferred cytoprotection via preventing Fas mediated death-inducing signaling complex (DISC) formation, subsequently suppressed caspase-8 mediated extrinsic apoptosis. Moreover, Flot-2 reduced the mitochondria mediated intrinsic apoptosis by regulating the Bcl-2 family and suppressing cytochrome C release from mitochondria to cytosol. Flot-2 further modulated the common apoptosis pathway and inhibited caspase-3 activation via up-regulating the members in the inhibitor of apoptosis (IAP) family. Last, Flot-2 interacted with cav-1 and limited its expression. Taken together, we found that Flot-2 protected cells from Fas induced apoptosis and counterbalanced the pro-apoptotic effects of cav-1. Thus, Flot-2 played crucial functions in cellular homeostasis and cell survival, suggesting a differential role of individual raft proteins.
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Affiliation(s)
- Shuquan Wei
- Division of Pulmonary and Critical Care, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Hyung-Geun Moon
- Division of Pulmonary and Critical Care, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Yijie Zheng
- Division of Pulmonary and Critical Care, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Xiaoliang Liang
- Division of Pulmonary and Critical Care, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Chang Hyeok An
- Division of Pulmonary and Critical Care, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Yang Jin
- Division of Pulmonary and Critical Care, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- * E-mail:
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Wang R, Bi J, Ampah KK, Zhang C, Li Z, Jiao Y, Wang X, Ba X, Zeng X. Lipid raft regulates the initial spreading of melanoma A375 cells by modulating β1 integrin clustering. Int J Biochem Cell Biol 2013; 45:1679-89. [PMID: 23665237 DOI: 10.1016/j.biocel.2013.04.031] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Revised: 04/28/2013] [Accepted: 04/29/2013] [Indexed: 01/16/2023]
Abstract
Cell adhesion and spreading require integrins-mediated cell-extracellular matrix interaction. Integrins function through binding to extracellular matrix and subsequent clustering to initiate focal adhesion formation and actin cytoskeleton rearrangement. Lipid raft, a liquid ordered plasma membrane microdomain, has been reported to play major roles in membrane motility by regulating cell surface receptor function. Here, we identified that lipid raft integrity was required for β1 integrin-mediated initial spreading of melanoma A375 cells on fibronectin. We found that lipid raft disruption with methyl-β-cyclodextrin led to the inability of focal adhesion formation and actin cytoskeleton rearrangement by preventing β1 integrin clustering. Furthermore, we explored the possible mechanism by which lipid raft regulates β1 integrin clustering and demonstrated that intact lipid raft could recruit and modify some adaptor proteins, such as talin, α-actinin, vinculin, paxillin and FAK. Lipid raft could regulate the location of these proteins in lipid raft fractions and facilitate their binding to β1 integrin, which may be crucial for β1 integrin clustering. We also showed that lipid raft disruption impaired A375 cell migration in both transwell and wound healing models. Together, these findings provide a new insight for the relationship between lipid raft and the regulation of integrins.
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Affiliation(s)
- Ruifei Wang
- Institute of Genetics and Cytology, Northeast Normal University, Changchun 130024, China
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40
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Singh RD, Schroeder AS, Scheffer L, Holicky EL, Wheatley CL, Marks DL, Pagano RE. Prominin-2 expression increases protrusions, decreases caveolae and inhibits Cdc42 dependent fluid phase endocytosis. Biochem Biophys Res Commun 2013; 434:466-72. [PMID: 23583380 DOI: 10.1016/j.bbrc.2013.03.097] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 03/26/2013] [Indexed: 11/18/2022]
Abstract
BACKGROUND Membrane protrusions play important roles in biological processes such as cell adhesion, wound healing, migration, and sensing of the external environment. Cell protrusions are a subtype of membrane microdomains composed of cholesterol and sphingolipids, and can be disrupted by cholesterol depletion. Prominins are pentaspan membrane proteins that bind cholesterol and localize to plasma membrane (PM) protrusions. Prominin-1 is of great interest as a marker for stem and cancer cells, while Prominin-2 (Prom2) is reportedly restricted to epithelial cells. AIM To characterize the effects of Prom-2 expression on PM microdomain organization. METHODS Prom2-fluorescent protein was transfected in human skin fibroblasts (HSF) and Chinese hamster ovary (CHO) cells for PM raft and endocytic studies. Caveolae at PM were visualized using transmission electron microscopy. Cdc42 activation was measured and caveolin-1 knockdown was performed using siRNAs. RESULTS Prom2 expression in HSF and CHO cells caused extensive Prom2-positive protrusions that co-localized with lipid raft markers. Prom2 expression significantly decreased caveolae at the PM, reduced caveolar endocytosis and increased caveolin-1 phosphorylation. Prom2 expression also inhibited Cdc42-dependent fluid phase endocytosis via decreased Cdc42 activation. Effects on endocytosis were reversed by addition of cholesterol. Knockdown of caveolin-1 by siRNA restored Cdc42 dependent fluid phase endocytosis in Prom2-expressing cells. CONCLUSIONS Prom2 protrusions primarily localize to lipid rafts and recruit cholesterol into protrusions and away from caveolae, leading to increased phosphorylation of caveolin-1, which inhibits Cdc42-dependent endocytosis. This study provides a new insight for the role for prominins in the regulation of PM lipid organization.
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Affiliation(s)
- Raman Deep Singh
- Departments of Medicine, Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
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41
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Lipid raft modulation by Rp1 reverses multidrug resistance via inactivating MDR-1 and Src inhibition. Biochem Pharmacol 2013; 85:1441-53. [PMID: 23473805 DOI: 10.1016/j.bcp.2013.02.025] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 02/27/2013] [Accepted: 02/27/2013] [Indexed: 02/04/2023]
Abstract
Multidrug resistance (MDR) is a major obstacle to effective cancer therapy. The membrane transporter MDR-1 (P-gp, ABCB1), a member of the ATP-binding cassette (ABC) transporter family, effluxes anti-cancer drugs from cancer cells. Increased activity of MDR-1 is known to be the main mechanism for multidrug resistance. MDR-1 is known to be localized in the cholesterol- and sphingolipid-enriched plasma membrane microdomains, known as lipid rafts. Disruption of lipid rafts by cholesterol depletion alters lipid raft functions, indicating that cholesterol is critical for raft function. Because ginsenosides are structurally similar to cholesterol, in this study, we investigated the effect of Rp1, a novel ginsenoside derivative, on drug resistance using drug-sensitive OVCAR-8 and drug-resistant NCI/ADR-RES and DXR cells. Rp1 treatment resulted in an accumulation of doxorubicin or rhodamine 123 by decreasing MDR-1 activity in doxorubicin-resistant cells. Rp1 synergistically induced cell death with actinomycin D in DXR cells. Rp1 appeared to redistribute lipid rafts and MDR-1 protein. Moreover, Rp1 reversed resistance to actinomycin D by decreasing MDR-1 protein levels and Src phosphorylation with modulation of lipid rafts. Addition of cholesterol attenuated Rp1-induced raft aggregation and MDR-1 redistribution. Rp1 and actinomycin D reduced Src activity, and overexpression of active Src decreased the synergistic effect of Rp1 with actinomycin D. Rp1-induced drug sensitization was also observed with several anti-cancer drugs, including doxorubicin. These data suggest that lipid raft-modulating agents can be used to inhibit MDR-1 activity and thus overcome drug resistance.
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42
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Onodera R, Motoyama K, Okamatsu A, Higashi T, Arima H. Potential use of folate-appended methyl-β-cyclodextrin as an anticancer agent. Sci Rep 2013; 3:1104. [PMID: 23346361 PMCID: PMC3551233 DOI: 10.1038/srep01104] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 12/10/2012] [Indexed: 11/26/2022] Open
Abstract
To obtain a tumor cell-selectivity of methyl-β-cyclodextrin (M-β-CyD), we newly synthesized folate-appended M-β-CyD (FA-M-β-CyD), and evaluated the potential of FA-M-β-CyD as a novel anticancer agent in vitro and in vivo. Potent antitumor activity and cellular association of FA-M-β-CyD were higher than those of M-β-CyD in KB cells, folate receptor (FR)-positive cells. FA-M-β-CyD drastically inhibited the tumor growth after intratumoral or intravenous injection to FR-positive Colon-26 cells-bearing mice. The antitumor activity of FA-M-β-CyD was comparable and superior to that of doxorubicin after both intratumoral and intravenous administrations, respectively, at the same dose, in the tumor-bearing mice. All of the tumor-bearing mice after an intravenous injection of FA-M-β-CyD survived for at least more than 140 days. Importantly, an intravenous administration of FA-M-β-CyD to tumor-bearing mice did not show any significant change in blood chemistry values. These results strongly suggest that FA-M-β-CyD has the potential as a novel anticancer agent.
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Affiliation(s)
- Risako Onodera
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Chuo-ku, Kumamoto 862-0973, Japan
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43
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Chun J, Joo EJ, Kang M, Kim YS. Platycodin D induces anoikis and caspase-mediated apoptosis via p38 MAPK in AGS human gastric cancer cells. J Cell Biochem 2012; 114:456-70. [DOI: 10.1002/jcb.24386] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 08/30/2012] [Indexed: 01/13/2023]
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Anoikis resistance: an essential prerequisite for tumor metastasis. Int J Cell Biol 2012; 2012:306879. [PMID: 22505926 PMCID: PMC3296207 DOI: 10.1155/2012/306879] [Citation(s) in RCA: 292] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Accepted: 12/03/2011] [Indexed: 12/31/2022] Open
Abstract
Metastasis is a multistep process including dissociation of cancer cells from primary sites, survival in the vascular system, and proliferation in distant target organs. As a barrier to metastasis, cells normally undergo an apoptotic process known as “anoikis,” a form of cell death due to loss of contact with the extracellular matrix or neighboring cells. Cancer cells acquire anoikis resistance to survive after detachment from the primary sites and travel through the circulatory and lymphatic systems to disseminate throughout the body. Because recent technological advances enable us to detect rare circulating tumor cells, which are anoikis resistant, currently, anoikis resistance becomes a hot topic in cancer research. Detailed molecular and functional analyses of anoikis resistant cells may provide insight into the biology of cancer metastasis and identify novel therapeutic targets for prevention of cancer dissemination. This paper comprehensively describes recent investigations of the molecular and cellular mechanisms underlying anoikis and anoikis resistance in relation to intrinsic and extrinsic death signaling, epithelial-mesenchymal transition, growth factor receptors, energy metabolism, reactive oxygen species, membrane microdomains, and lipid rafts.
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45
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Fedida-Metula S, Feldman B, Koshelev V, Levin-Gromiko U, Voronov E, Fishman D. Lipid rafts couple store-operated Ca 2+ entry to constitutive activation of PKB/Akt in a Ca 2+ /calmodulin-, Src- and PP2A-mediated pathway and promote melanoma tumor growth. Carcinogenesis 2012; 33:740-50. [DOI: 10.1093/carcin/bgs021] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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46
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Methyl-β-cyclodextrin induces programmed cell death in chronic myeloid leukemia cells and, combined with imatinib, produces a synergistic downregulation of ERK/SPK1 signaling. Anticancer Drugs 2012; 23:22-31. [DOI: 10.1097/cad.0b013e32834a099c] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Bucciantini M, Nosi D, Forzan M, Russo E, Calamai M, Pieri L, Formigli L, Quercioli F, Soria S, Pavone F, Savistchenko J, Melki R, Stefani> M. Toxic effects of amyloid fibrils on cell membranes: the importance of ganglioside GM1. FASEB J 2011; 26:818-31. [DOI: 10.1096/fj.11-189381] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Monica Bucciantini
- Department of Biochemical Sciences, and Forensic MedicineUniversity of Florence Florence Italy
- Research Centre on the Molecular Basis of Neurodegeneration, and Forensic MedicineUniversity of Florence Florence Italy
| | - Daniele Nosi
- Department of Anatomy, Histology, and Forensic MedicineUniversity of Florence Florence Italy
| | - Mario Forzan
- Department of Animal Pathology, Food Prophylaxis, and HygieneUniversity of Pisa Pisa Italy
| | - Edda Russo
- Department of Biochemical Sciences, and Forensic MedicineUniversity of Florence Florence Italy
| | - Martino Calamai
- European Laboratory for Nonlinear Spectroscopy (LENS)University of Florence Florence Italy
| | - Laura Pieri
- Laboratoire d'Enzymologie et Biochimie StructuralesCentre National de la Recherche Scientifique Gif sur Yvette France
| | - Lucia Formigli
- Department of Anatomy, Histology, and Forensic MedicineUniversity of Florence Florence Italy
| | - Franco Quercioli
- National Institute of OpticsConsiglio Nazionale delle Ricerche Florence Research Area Florence Italy
| | - Silvia Soria
- Nello Carrara Institute of Applied PhysicsConsiglio Nazionale delle Ricerche Florence Research Area Florence Italy
| | - Francesco Pavone
- European Laboratory for Nonlinear Spectroscopy (LENS)University of Florence Florence Italy
| | - Jimmy Savistchenko
- Laboratoire d'Enzymologie et Biochimie StructuralesCentre National de la Recherche Scientifique Gif sur Yvette France
| | - Ronald Melki
- Department of Animal Pathology, Food Prophylaxis, and HygieneUniversity of Pisa Pisa Italy
- Laboratoire d'Enzymologie et Biochimie StructuralesCentre National de la Recherche Scientifique Gif sur Yvette France
| | - Massimo Stefani>
- Department of Biochemical Sciences, and Forensic MedicineUniversity of Florence Florence Italy
- Research Centre on the Molecular Basis of Neurodegeneration, and Forensic MedicineUniversity of Florence Florence Italy
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Seong J, Ouyang M, Kim T, Sun J, Wen PC, Lu S, Zhuo Y, Llewellyn NM, Schlaepfer DD, Guan JL, Chien S, Wang Y. Detection of focal adhesion kinase activation at membrane microdomains by fluorescence resonance energy transfer. Nat Commun 2011; 2:406. [PMID: 21792185 DOI: 10.1038/ncomms1414] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Accepted: 06/27/2011] [Indexed: 01/05/2023] Open
Abstract
Proper subcellular localization of focal adhesion kinase (FAK) is crucial for many cellular processes. It remains, however, unclear how FAK activity is regulated at subcellular compartments. To visualize the FAK activity at different membrane microdomains, we develop a fluorescence resonance energy transfer (FRET)-based FAK biosensor, and target it into or outside of detergent-resistant membrane (DRM) regions at the plasma membrane. Here we show that, on cell adhesion to extracellular matrix proteins or stimulation by platelet-derived growth factor (PDGF), the FRET responses of DRM-targeting FAK biosensor are stronger than that at non-DRM regions, suggesting that FAK activation can occur at DRM microdomains. Further experiments reveal that the PDGF-induced FAK activation is mediated and maintained by Src activity, whereas FAK activation on cell adhesion is independent of, and in fact essential for the Src activation. Therefore, FAK is activated at membrane microdomains with distinct activation mechanisms in response to different physiological stimuli.
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Affiliation(s)
- Jihye Seong
- Neuroscience Program, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA
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Buschiazzo J, Alonso TS, Biscoglio M, Antollini SS, Bonini IC. Nongenomic steroid- and ceramide-induced maturation in amphibian oocytes involves functional caveolae-like microdomains associated with a cytoskeletal environment. Biol Reprod 2011; 85:808-22. [PMID: 21653896 DOI: 10.1095/biolreprod.110.090365] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Stimulation of full-grown amphibian oocytes with progesterone initiates a nontranscriptional signaling pathway that converges in the activation of Cdc2/cyclin B and reentry into meiosis. We observed that cholesterol depletion mediated by methyl-beta-cyclodextrin (MbetaCD) inhibited meiotic maturation, suggesting involvement of membrane rafts. In the present study, we further characterized caveolae-like membranes from Rhinella arenarum oocytes biochemically and functionally. The identification by mass spectrometry of a nonmuscle myosin heavy-chain associated with caveolar membranes showed evidence of direct involvement of the underlying cytoskeletal environment in the structure of oocyte rafts. Biophysical analysis using the fluorescent probe Laurdan revealed that MbetaCD-mediated cholesterol depletion affected membrane lipid order. In line with this finding, cholesterol removal also affected the localization of the raft marker lipid GM1. Results demonstrated that ceramide is an effective inducer of maturation that alters the distribution of the raft markers caveolin-1, SRC, and GM1, while progesterone seems not to affect membrane microdomain integrity. Cholesterol depletion had a greater effect on ceramide-induced maturation, thus suggesting that ceramide is an inducer more vulnerable to changes in the plasma membrane. MbetaCD treatment delayed tyrosine phosphorylation and MAPK activation in progesterone-induced maturation. Functional studies regarding tyrosine phosphorylation raise the possibility that the hormone receptor is located in the nonraft membrane in the absence of ligand and that it translocates to the caveola when it binds to progesterone. The presence of raft markers and the finding of signaling molecules from MAPK cascade functionally associated to oocyte light membranes suggest that this caveolae-rich fraction efficiently recreates, in part, maturation signaling.
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Affiliation(s)
- Jorgelina Buschiazzo
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Universidad Nacional del Sur-Consejo Nacional de Investigaciones Científicas y Técnicas, Bahía Blanca, Argentina
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Fu M, Rao R, Sudhakar D, Hogue CP, Rutta Z, Morales S, Gordon LK, Braun J, Goodglick L, Wadehra M. Epithelial membrane protein-2 promotes endometrial tumor formation through activation of FAK and Src. PLoS One 2011; 6:e19945. [PMID: 21637765 PMCID: PMC3103522 DOI: 10.1371/journal.pone.0019945] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Accepted: 04/06/2011] [Indexed: 11/18/2022] Open
Abstract
Endometrial cancer is the most common gynecologic malignancy diagnosed among women in developed countries. One recent biomarker strongly associated with disease progression and survival is epithelial membrane protein-2 (EMP2), a tetraspan protein known to associate with and modify surface expression of certain integrin isoforms. In this study, we show using a xenograft model system that EMP2 expression is necessary for efficient endometrial tumor formation, and we have started to characterize the mechanism by which EMP2 contributes to this malignant phenotype. In endometrial cancer cells, the focal adhesion kinase (FAK)/Src pathway appears to regulate migration as measured through wound healing assays. Manipulation of EMP2 levels in endometrial cancer cells regulates the phosphorylation of FAK and Src, and promotes their distribution into lipid raft domains. Notably, cells with low levels of EMP2 fail to migrate and poorly form tumors in vivo. These findings reveal the pivotal role of EMP2 in endometrial cancer carcinogenesis, and suggest that the association of elevated EMP2 levels with endometrial cancer prognosis may be causally linked to its effect on integrin-mediated signaling.
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Affiliation(s)
- Maoyong Fu
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Rajiv Rao
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Deepthi Sudhakar
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Claire P. Hogue
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Zach Rutta
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Shawn Morales
- Jules Stein Eye Institute, University of California Los Angeles, Los Angeles, California, United States of America
| | - Lynn K. Gordon
- Jules Stein Eye Institute, University of California Los Angeles, Los Angeles, California, United States of America
| | - Jonathan Braun
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California, United States of America
| | - Lee Goodglick
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California, United States of America
| | - Madhuri Wadehra
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail:
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