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Kubala JM, Laursen KB, Schreiner R, Williams RM, van der Mijn JC, Crowley MJ, Mongan NP, Nanus DM, Heller DA, Gudas LJ. NDUFA4L2 reduces mitochondrial respiration resulting in defective lysosomal trafficking in clear cell renal cell carcinoma. Cancer Biol Ther 2023; 24:2170669. [PMID: 36722045 PMCID: PMC9897797 DOI: 10.1080/15384047.2023.2170669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 12/23/2022] [Indexed: 02/02/2023] Open
Abstract
In clear cell renal cell carcinoma (ccRCC), activation of hypoxic signaling induces NADH dehydrogenase (ubiquinone) 1 alpha subcomplex, 4-like 2 (NDUFA4L2) expression. Over 90% of ccRCCs exhibit overexpression of NDUFA4L2, which we previously showed contributes to ccRCC proliferation and survival. The function of NDUFA4L2 in ccRCC has not been fully elucidated. NDUFA4L2 was reported to reduce mitochondrial respiration via mitochondrial complex I inhibition. We found that NDUFA4L2 expression in human ccRCC cells increases the extracellular acidification rate, indicative of elevated glycolysis. Conversely, NDUFA4L2 expression in non-cancerous kidney epithelial cells decreases oxygen consumption rate while increasing extracellular acidification rate, suggesting that a Warburg-like effect is induced by NDUFA4L2 alone. We performed mass-spectrometry (MS)-based proteomics of NDUFA4L2 associated complexes. Comparing RCC4-P (parental) ccRCC cells with RCC4 in which NDUFA4L2 is knocked out by CRISPR-Cas9 (RCC4-KO-643), we identified 3,215 proteins enriched in the NDUFA4L2 immunoprecipitates. Among the top-ranking pathways were "Metabolic Reprogramming in Cancer" and "Glycolysis Activation in Cancer (Warburg Effect)." We also show that NDUFA4L2 enhances mitochondrial fragmentation, interacts with lysosomes, and increases mitochondrial-lysosomal associations, as assessed by high-resolution fluorescence microscopy and live cell imaging. We identified 161 lysosomal proteins, including Niemann-Pick Disease Type C Intracellular Cholesterol Transporters 1 and 2 (NPC1, NPC2), that are associated with NDUFA4L2 in RCC4-P cells. RCC4-P cells have larger and decreased numbers of lysosomes relative to RCC4 NDUFA4L2 knockout cells. These findings suggest that NDUFA4L2 regulates mitochondrial-lysosomal associations and potentially lysosomal size and abundance. Consequently, NDUFA4L2 may regulate not only mitochondrial, but also lysosomal functions in ccRCC.
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Affiliation(s)
- Jaclyn M. Kubala
- Department of Pharmacology, Weill Cornell Medicine, New York, NY, USA
- Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| | | | - Ryan Schreiner
- Division of Regenerative Medicine Research, Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Ryan M. Williams
- Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Biomedical Engineering, the City College of New York, New York, NY, USA
| | | | - Michael J. Crowley
- Department of Physiology, Biophysics, and Systems Biology, Weill Cornell Medicine, New York, NY, USA
| | - Nigel P. Mongan
- Department of Pharmacology, Weill Cornell Medicine, New York, NY, USA
- Faculty of Medicine and Health Sciences, Center for Cancer Sciences, University of Nottingham, Sutton Bonington Campus, Loughborough, UK
| | - David M. Nanus
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
- Division of Hematology and Medical Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, USA
- Department of Urology; New York Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA
| | - Daniel A. Heller
- Department of Pharmacology, Weill Cornell Medicine, New York, NY, USA
- Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Physiology, Biophysics, and Systems Biology, Weill Cornell Medicine, New York, NY, USA
| | - Lorraine J. Gudas
- Department of Pharmacology, Weill Cornell Medicine, New York, NY, USA
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
- Department of Urology; New York Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA
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Panda SP, Dhurandhar Y, Agrawal M. The interplay of epilepsy with impaired mitophagy and autophagy linked dementia (MAD): A review of therapeutic approaches. Mitochondrion 2022; 66:27-37. [PMID: 35842181 DOI: 10.1016/j.mito.2022.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/21/2022] [Accepted: 07/10/2022] [Indexed: 12/28/2022]
Abstract
The duration and, age of dementia have been linked to a higher risk of seizures. The exact mechanism that drives epileptogenesis in impaired mitophagy and autophagy linked dementia (MAD) is fully defined after reviewing the Scopus, Publon, and Pubmed databases. The epileptogenesis in patients with Alzheimer's disease dementia (ADD) and Parkinson's disease dementia (PDD) is due to involvement of amyloid plaques (Aβ), phosphorylated tau (pTau), Parkin, NF-kB and NLRP3 inflammasome. Microglia, the prime protective and inflammatory cells in the brain exert crosstalk between mitophagy and inflammation. Several researchers believed that the inflammatory brain cells microglia could be a therapeutic target for the treatment of a MAD associated epilepsy. There are conventional antiepileptic drugs such as gabapentin, lamotrigine, phenytoin sodium, carbamazepine, oxcarbazepine, felbamate, lamotrigine, valproate sodium, and topiramate are prescribed by a psychiatrist to suppress seizure frequency. Also, the conventional drugs generate serious adverse effects and synergises dementia characteristics. The adverse effect of carbamazepine is neurotoxic and also, damages haemopoietic system and respiratory tract. The phenytoin treatment causes cerebellar defect and anemia. Dementia and epilepsy have a complicated relationship, thus targeting mitophagy for cure of epileptic dementia makes sense. Complementary and alternative medicine (CAM) is one of the rising strategies by many patients of the world, not only to suppress seizure frequency but also to mitigate dementia characteristics of patients. Therefore our present review focus on the interplay between epilepsy and MAD and their treatment with CAM approaches.
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Affiliation(s)
- Siva Prasad Panda
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh, India.
| | - Yogita Dhurandhar
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh, India.
| | - Mehak Agrawal
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh, India.
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Tran Q, Lee H, Jung JH, Chang SH, Shrestha R, Kong G, Park J, Kim SH, Park KS, Rhee HW, Yun J, Cho MH, Kim KP, Park J. Emerging role of LETM1/GRP78 axis in lung cancer. Cell Death Dis 2022; 13:543. [PMID: 35680871 PMCID: PMC9184611 DOI: 10.1038/s41419-022-04993-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 05/26/2022] [Accepted: 05/31/2022] [Indexed: 01/21/2023]
Abstract
The selective autophagy of damaged mitochondria is called mitophagy. Mitochondrial dysfunction, mitophagy, and apoptosis have been suggested to be interrelated in various human lung carcinomas. Leucine zipper EF-hand-containing transmembrane protein-1 (LETM1) was cloned in an attempt to identify candidate genes for Wolf-Hirschhorn syndrome. LETM1 plays a role in mitochondrial morphology, ion homeostasis, and cell viability. LETM1 has also been shown to be overexpressed in different human cancer tissues, including lung cancer. In the current study, we have provided clear evidence that LETM1 acts as an anchoring protein for the mitochondria-associated ER membrane (MAM). Fragmented mitochondria have been found in lung cancer cells with LETM1 overexpression. In addition, a reduction of mitochondrial membrane potential and significant accumulation of microtubule-associated protein 1 A/1B-light chain 3 punctate, which localizes with Red-Mito, was found in LETM1-overexpressed cells, suggesting that mitophagy is upregulated in these cells. Interestingly, glucose-regulated protein 78 kDa (GRP78; an ER chaperon protein) and glucose-regulated protein 75 kDa (GRP75) were posited to interact with LETM1 in the immunoprecipitated LETM1 of H460 cells. This interaction was enhanced in cells treated with carbonyl cyanide m-chlorophenylhydrazone, a chemical mitophagy inducer. Treatment of cells with honokiol (a GRP78 inhibitor) blocked LETM1-mediated mitophagy, and CRISPR/Cas9-mediated GRP75 knockout inhibited LETM1-induced autophagy. Thus, GRP78 interacts with LETM1. Taken together, these observations support the notion that the complex formation of LETM1/GRP75/GRP78 might be an important step in MAM formation and mitophagy, thus regulating mitochondrial quality control in lung cancer.
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Affiliation(s)
- Quangdon Tran
- grid.254230.20000 0001 0722 6377Department of Pharmacology, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea ,grid.254230.20000 0001 0722 6377Department of Medical Science, Metabolic Syndrome and Cell Signaling Laboratory, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea ,Molecular Biology Laboratory, Department of Medical Laboratories, Hai Phong International Hospital, Hai Phong City, #18000 Vietnam
| | - Hyunji Lee
- grid.254230.20000 0001 0722 6377Department of Pharmacology, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea ,grid.254230.20000 0001 0722 6377Department of Medical Science, Metabolic Syndrome and Cell Signaling Laboratory, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea
| | - Jae Hun Jung
- grid.289247.20000 0001 2171 7818Department of Applied Chemistry, College of Applied Sciences, Kyunghee University, Yongin, 17104 South Korea
| | - Seung-Hee Chang
- grid.31501.360000 0004 0470 5905Laboratory of Toxicology, College of Veterinary Medicine Seoul National University, Seoul, 08826 South Korea
| | - Robin Shrestha
- grid.254230.20000 0001 0722 6377Department of Pharmacology, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea ,grid.254230.20000 0001 0722 6377Department of Medical Science, Metabolic Syndrome and Cell Signaling Laboratory, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea
| | - Gyeyeong Kong
- grid.254230.20000 0001 0722 6377Department of Pharmacology, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea ,grid.254230.20000 0001 0722 6377Department of Medical Science, Metabolic Syndrome and Cell Signaling Laboratory, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea
| | - Jisoo Park
- grid.254230.20000 0001 0722 6377Department of Pharmacology, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea ,grid.254230.20000 0001 0722 6377Department of Medical Science, Metabolic Syndrome and Cell Signaling Laboratory, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea ,grid.411948.10000 0001 0523 5122Department of Life Science, Hyehwa Liberal Arts College, Daejeon University, Daejeon, 34520 South Korea
| | - Seon-Hwan Kim
- grid.254230.20000 0001 0722 6377Department of Neurosurgery, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea
| | - Kyu-Sang Park
- grid.15444.300000 0004 0470 5454Department of Physiology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, 26427 Korea
| | - Hyun-Woo Rhee
- grid.42687.3f0000 0004 0381 814XDepartment of Chemistry, Ulsan National Institute of Science and Technology, Ulsan, 44919 Korea
| | - Jeanho Yun
- grid.255166.30000 0001 2218 7142Mitochondria Hub Regulation Center, College of Medicine, Dong-A University, Busan, 49201 South Korea
| | - Myung-Haing Cho
- grid.31501.360000 0004 0470 5905Laboratory of Toxicology, College of Veterinary Medicine Seoul National University, Seoul, 08826 South Korea ,RNABIO, Seongnam, Gyeonggi-do 13201 South Korea
| | - Kwang Pyo Kim
- grid.289247.20000 0001 2171 7818Department of Applied Chemistry, College of Applied Sciences, Kyunghee University, Yongin, 17104 South Korea
| | - Jongsun Park
- grid.254230.20000 0001 0722 6377Department of Pharmacology, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea ,grid.254230.20000 0001 0722 6377Department of Medical Science, Metabolic Syndrome and Cell Signaling Laboratory, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, 35015 South Korea
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Bertman KA, Abeywickrama CS, Pang Y. A NIR Emitting Cyanine with Large Stokes' Shift for Mitochondria and Identification of their Membrane Potential Disruption. Chembiochem 2021; 23:e202100516. [PMID: 34783144 DOI: 10.1002/cbic.202100516] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/12/2021] [Indexed: 12/11/2022]
Abstract
An NIR emitting (λem ≈730 nm) cyanine probe ExCy was synthesized in good yields by extending the π-conjugation length (i. e., with furan moiety) to the donor-accepter system. ExCy exhibited a large Stokes' shift (Δλ≈100 nm) due to strong intramolecular charge transfer (ICT), and high fluorescence quantum yield (Φfl ≈0.47 in DCM). Due to its low fluorescence in an aqueous environment (Φfl ≈0.007 in H2 O), the probe exhibited the potential of achieving a large fluorescence turn-on upon entering a hydrophobic cellular environment. Fluorescence confocal microscopy studies revealed that ExCy was readily excitable with a far-red laser line (i. e., 640 nm) while the corresponding emission was collected in the NIR region. ExCy exhibited excellent selectivity towards live cell mitochondria according to the co-localization studies. The probe also exhibited high photostability, long-term imaging ability and wash-free staining ability, when being applied to live cells. Our studies indicated that the mitochondrial localization of ExCy was dependent on the membrane potential of the mitochondria. ExCy was successfully utilized as a mitochondrial membrane potential dysfunction indicator to visually identify cells with mitochondrial dysfunction via fluorescence confocal microscopy. ExCy was further examined for potential in vivo imaging of zebrafish.
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Affiliation(s)
- Keti A Bertman
- Department of Chemistry, University of Akron, Akron, Ohio, 44325, USA
| | | | - Yi Pang
- Department of Chemistry, University of Akron, Akron, Ohio, 44325, USA.,Maurice Morton Institute of Polymer Science, University of Akron, Akron, Ohio, 44325, USA
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Purushottam Dharaskar S, Paithankar K, Kanugovi Vijayavittal A, Shabbir Kara H, Amere Subbarao S. Mitochondrial chaperone, TRAP1 modulates mitochondrial dynamics and promotes tumor metastasis. Mitochondrion 2020; 54:92-101. [PMID: 32784002 DOI: 10.1016/j.mito.2020.08.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/26/2020] [Accepted: 08/05/2020] [Indexed: 12/13/2022]
Abstract
Mitochondria play a central role in regulating cellular energy metabolism. However, the present understanding of mitochondria has changed from its unipotent functions to pluripotent and insists on understanding the role of mitochondria not only in regulating the life and death of cells, but in pathological conditions such as cancer. Unlike other cellular organelles, subtle alterations in mitochondrial organization may significantly influence the balance between metabolic networks and cellular behavior. Therefore, the delicate balance between the fusion and fission dynamics of mitochondrion can indicate cell fate. Here, we present mitochondrial chaperone TRAP1 influence on mitochondrial architecture and its correlation with tumor growth and metastasis. We show that TRAP1 overexpression (TRAP1 OE) promotes mitochondrial fission, whereas, TRAP1 knockdown (TRAP1 KD) promotes mitochondrial fusion. Interestingly, TRAP1 OE or KD had a negligible effect on mitochondrial integrity. However, TRAP1 OE cells exhibited enhanced proliferative potential, while TRAP1 KD cells showing increased doubling time. Further, TRAP1 dependent mitochondrial dynamic alterations appeared to be unique since mitochondrial localization of TRAP1 is a mandate for dynamic changes. The expression patterns of fusion and fission genes have failed to correlate with TRAP1 expression, indicating a possibility that the dynamic changes can be independent of these genes. In agreement with enhanced proliferative potential, TRAP1 OE cells also exhibited enhanced migration in vitro and tumor metastasis in vivo. Further, TRAP1 OE cells showed altered homing properties, which may challenge site-specific anticancer treatments. Our findings unravel the TRAP1 role in tumor metastasis, which is in addition to altered energy metabolism.
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Affiliation(s)
- Shrikant Purushottam Dharaskar
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Telangana, India; AcSIR - Academy of Scientific & Innovative Research, Government of India, India
| | - Khanderao Paithankar
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Telangana, India
| | | | - Hatim Shabbir Kara
- Presently at Life Sciences & Chemistry, Jacobs University Bremen gGmbh, Bremen, Germany
| | - Sreedhar Amere Subbarao
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, Telangana, India.
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HSPA1A Protects Cells from Thermal Stress by Impeding ESCRT-0-Mediated Autophagic Flux in Epidermal Thermoresistance. J Invest Dermatol 2020; 141:48-58.e3. [PMID: 32533962 DOI: 10.1016/j.jid.2020.05.105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 05/19/2020] [Accepted: 05/19/2020] [Indexed: 01/30/2023]
Abstract
Thermoresistance is a physiological phenomenon relevant to noninvasive laser treatments for skin esthetics and tumor removal, although the underlying mechanism remains elusive. We hypothesized that HSPA1A may regulate autophagy by reducing ESCRT-0 and/or STAM2 levels, which could lead to thermal protection from cell death. In this study, we showed that thermoresistance was induced in mouse epidermal tissue and HaCaT cells by heating at 45 °C for 10 minutes. Moreover, HSPA1A levels were increased in thermoresistant mouse epidermis and HaCaT cells. HSPA1A was highly involved in protecting cells from thermal cytotoxicity, as evidenced by the knockdown or overexpression assays of the HSPA1A gene. In addition, ESCRT-0 and STAM2 levels were dramatically decreased in thermoresistant cells, which was mediated by HSPA1A binding to STAM2, particularly through HSPA1A amino acids 395‒509. Furthermore, the loss of ESCRT-0 and/or STAM2 in response to HSPA1A-STAM2 binding regulated autophagy by impeding autophagosome‒lysosome fusion and abolishing autophagic flux in cellular thermoresistance, significantly reducing thermal cytotoxicity and promoting cell survival. To our knowledge, it is previously unreported that HSPA1A-ESCRT-0 and/or STAM2 modulates heat-induced resistance by inhibiting autophagic flux. In summary, the results of this study demonstrate that the mechanisms of thermoresistance may have clinical relevance for noninvasive or minimally invasive thermal therapeutics.
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Hartman ML. Non-Apoptotic Cell Death Signaling Pathways in Melanoma. Int J Mol Sci 2020; 21:E2980. [PMID: 32340261 PMCID: PMC7215321 DOI: 10.3390/ijms21082980] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 12/14/2022] Open
Abstract
Resisting cell death is a hallmark of cancer. Disturbances in the execution of cell death programs promote carcinogenesis and survival of cancer cells under unfavorable conditions, including exposition to anti-cancer therapies. Specific modalities of regulated cell death (RCD) have been classified based on different criteria, including morphological features, biochemical alterations and immunological consequences. Although melanoma cells are broadly equipped with the anti-apoptotic machinery and recurrent genetic alterations in the components of the RAS/RAF/MEK/ERK signaling markedly contribute to the pro-survival phenotype of melanoma, the roles of autophagy-dependent cell death, necroptosis, ferroptosis, pyroptosis, and parthanatos have recently gained great interest. These signaling cascades are involved in melanoma cell response and resistance to the therapeutics used in the clinic, including inhibitors of BRAFmut and MEK1/2, and immunotherapy. In addition, the relationships between sensitivity to non-apoptotic cell death routes and specific cell phenotypes have been demonstrated, suggesting that plasticity of melanoma cells can be exploited to modulate response of these cells to different cell death stimuli. In this review, the current knowledge on the non-apoptotic cell death signaling pathways in melanoma cell biology and response to anti-cancer drugs has been discussed.
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Affiliation(s)
- Mariusz L Hartman
- Department of Molecular Biology of Cancer, Medical University of Lodz, 6/8 Mazowiecka Street, 92-215 Lodz, Poland
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8
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Samaka RM, Basha MA, Mansour E. Does the Autophagy Related Gene 7 (ATG7) Have a Role in Non-Melanoma Skin Cancer? Clin Cosmet Investig Dermatol 2020; 13:49-58. [PMID: 32021368 PMCID: PMC6980838 DOI: 10.2147/ccid.s222051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 11/29/2019] [Indexed: 12/14/2022]
Abstract
Purpose To evaluate the role of autophagy related gene 7 (ATG7) in non-melanoma skin cancer. Subjects and Methods This retrospective and prospective case-control study was performed on 104 patients with non-melanoma skin cancer (NMSC) in addition to 20 apparently healthy subjects matched for age and sex as a control group. Multiple skin biopsies were taken for immunohistochemical evaluation of ATG7 expression. Results Both epithelial and stromal ATG7 were expressed in all participants while all patients showed nucleocytoplasmic localization and controls showed both cytoplasmic and nucleocytoplasmic expression. In addition, significantly higher H-scores of ATG7 in both epithelium and stroma were detected in patients compared to controls (P<0.001). Conclusion ATG7 nucleocytoplasmic topographic localization might be involved in the pathogenesis of NMSC, which can open the gate for new target therapy for this skin cancer.
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Affiliation(s)
- Rehab M Samaka
- Pathology Department, Faculty of Medicine, Menoufia University, Al Minufya, Egypt
| | - Mohammed A Basha
- Dermatology, Andrology and STDs Department, Faculty of Medicine, Menoufia University, Al Minufya, Egypt
| | - Eman Mansour
- Ministry of Health, El Menshawy General Hospital, Tanta, Egypt
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Di Leo L, Bodemeyer V, De Zio D. The Complex Role of Autophagy in Melanoma Evolution: New Perspectives From Mouse Models. Front Oncol 2020; 9:1506. [PMID: 31998652 PMCID: PMC6966767 DOI: 10.3389/fonc.2019.01506] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 12/16/2019] [Indexed: 12/18/2022] Open
Abstract
Despite tremendous efforts in the last decade to improve treatments, melanoma still represents a major therapeutic challenge and overall survival of patients remains poor. Therefore, identifying new targets to counteract melanoma is needed. In this scenario, autophagy, the “self-eating” process of the cell, has recently arisen as new potential candidate in melanoma. Alongside its role as a recycling mechanism for dysfunctional and damaged cell components, autophagy also clearly sits at a crossroad with metabolism, thereby orchestrating cell proliferation, bioenergetics and metabolic rewiring, all hallmarks of cancer cells. In this regard, autophagy, both in tumor and host, has been flagged as an essential player in melanomagenesis and progression. To pave the way to a better understanding of such a complex interplay, the use of genetically engineered mouse models (GEMMs), as well as syngeneic mouse models, has been undoubtedly crucial. Herein, we will explore the latest discoveries in the field, with particular focus on the potential of these models in unraveling the contribution of autophagy in melanoma, along with the therapeutic advantages that may arise.
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Affiliation(s)
- Luca Di Leo
- Cell Stress and Survival Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Valérie Bodemeyer
- Cell Stress and Survival Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Daniela De Zio
- Cell Stress and Survival Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, Denmark
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Obrador E, Liu-Smith F, Dellinger RW, Salvador R, Meyskens FL, Estrela JM. Oxidative stress and antioxidants in the pathophysiology of malignant melanoma. Biol Chem 2019; 400:589-612. [PMID: 30352021 DOI: 10.1515/hsz-2018-0327] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/09/2018] [Indexed: 02/07/2023]
Abstract
The high number of somatic mutations in the melanoma genome associated with cumulative ultra violet (UV) exposure has rendered it one of the most difficult of cancers to treat. With new treatment approaches based on targeted and immune therapies, drug resistance has appeared as a consistent problem. Redox biology, including reactive oxygen and nitrogen species (ROS and RNS), plays a central role in all aspects of melanoma pathophysiology, from initiation to progression and to metastatic cells. The involvement of melanin production and UV radiation in ROS/RNS generation has rendered the melanocytic lineage a unique system for studying redox biology. Overall, an elevated oxidative status has been associated with melanoma, thus much effort has been expended to prevent or treat melanoma using antioxidants which are expected to counteract oxidative stress. The consequence of this redox-rebalance seems to be two-fold: on the one hand, cells may behave less aggressively or even undergo apoptosis; on the other hand, cells may survive better after being disseminated into the circulating system or after drug treatment, thus resulting in metastasis promotion or further drug resistance. In this review we summarize the current understanding of redox signaling in melanoma at cellular and systemic levels and discuss the experimental and potential clinic use of antioxidants and new epigenetic redox modifiers.
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Affiliation(s)
- Elena Obrador
- Department of Phisiology, University of Valencia, 46010 Valencia, Spain
| | - Feng Liu-Smith
- Department of Epdemiology, Department of Medicine, Chao Family Comprehensive Cancer Center, University of California Irvine, Irvine, CA 92697, USA.,Department of Medicine, Chao Family Comprehensive Cancer Center, University of California Irvine, Irvine, CA 92697, USA
| | | | - Rosario Salvador
- Department of Phisiology, University of Valencia, 46010 Valencia, Spain
| | - Frank L Meyskens
- Department of Epdemiology, Department of Medicine, Chao Family Comprehensive Cancer Center, University of California Irvine, Irvine, CA 92697, USA.,Department of Medicine, Chao Family Comprehensive Cancer Center, University of California Irvine, Irvine, CA 92697, USA.,Department of Biological Chemistry, Chao Family Comprehensive Cancer Center, University of California, Irvine, CA 92697, USA
| | - José M Estrela
- Department of Phisiology, University of Valencia, 46010 Valencia, Spain
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11
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Abeywickrama CS, Wijesinghe KJ, Stahelin RV, Pang Y. Lysosome imaging in cancer cells by pyrene-benzothiazolium dyes: An alternative imaging approach for LAMP-1 expression based visualization methods to avoid background interference. Bioorg Chem 2019; 91:103144. [PMID: 31377388 PMCID: PMC7065667 DOI: 10.1016/j.bioorg.2019.103144] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/03/2019] [Accepted: 07/19/2019] [Indexed: 12/31/2022]
Abstract
A series of pyrene-benzothiazolium dyes (1a-1d) were experimentally investigated to study their internalization mechanism into cellular lysosomes as well as their potential imaging applications for live cell imaging. The lysosome selectivity of the probes was further compared by using fluorescently tagged lysosome associated membrane protein-1 (LAMP-1) expression-dependent visualization in both normal (COS-7, HEK293) and cancer (A549, Huh 7.5) cell lines. These probes were successfully employed as reliable lysosome markers in tumor cell models, thus providing an attractive alternative to LAMP-1 expression-dependent visualization methods. One advantage of these probes is the elimination of significant background fluorescence arising from fluorescently tagged protein expression on the cell surface when cells were transfected with LAMP-1 expression plasmids. Probes exhibited remarkable ability to stain cellular lysosomes for long-term experiments (up to 24 h) and the highly lipophilic nature of the probe design allowed their accumulation in hydrophobic regions of the cellular lysosomes. Experimental evidences indicated that the probes are likely to be internalized into lysosomes via endocytosis and accumulated in the hydrophobic regions of the lysosomes rather than in the acidic lysosomal lumen. These probes also demonstrated significant stability and lysosome staining for fixed cell imaging applications as well. Lastly, the benzothiazolium moiety of the probes was identified as the key component for lysosome selectivity.
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Affiliation(s)
| | - Kaveesha J Wijesinghe
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Robert V Stahelin
- Department of Medicinal Chemistry and Molecular Pharmacology and the Purdue Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA.
| | - Yi Pang
- Department of Chemistry, University of Akron, Akron, OH 44325, USA; Maurice Morton Institute of Polymer Science, University of Akron, Akron, OH 44325, USA.
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12
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Guo Y, Zhang X, Wu T, Hu X, Su J, Chen X. Autophagy in Skin Diseases. Dermatology 2019; 235:380-389. [PMID: 31269494 DOI: 10.1159/000500470] [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] [Received: 12/10/2018] [Accepted: 04/15/2019] [Indexed: 11/19/2022] Open
Abstract
Autophagy, or self-eating, is an evolutionarily conserved process in which cytosol and organelles are sequestered within double-membrane vesicles that deliver the contents to the lysosome/vacuole for the degradation and recycling of cytoplasmic components in eukaryotes. It is well recognized that autophagy plays an important role in maintaining cellular homeostasis under physiological and pathophysiological con-ditions and the upregulation of autophagy may serve as an adaptive process to provide nutrients and energy when under stresses. Recently, studies have illustrated that autophagy is intricately related to skin diseases. This review provides a brief synopsis of the process of autophagy and aims to elucidate the roles of autophagy in different skin diseases and to highlight the need for increased research in the field.
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Affiliation(s)
- Yeye Guo
- Department of Dermatology, XiangYa Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China
| | - Xu Zhang
- Department of Dermatology, XiangYa Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China
| | - Tianhao Wu
- Department of Dermatology, XiangYa Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China
| | - Xing Hu
- Department of Dermatology, XiangYa Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China
| | - Juan Su
- Department of Dermatology, XiangYa Hospital, Central South University, Changsha, China, .,Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China,
| | - Xiang Chen
- Department of Dermatology, XiangYa Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Skin Cancer and Psoriasis, Central South University, Changsha, China
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13
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Mei D, Chen B, He B, Liu H, Lin Z, Lin J, Zhang X, Sun N, Zhao L, Wang X, Zhang Q. Actively priming autophagic cell death with novel transferrin receptor-targeted nanomedicine for synergistic chemotherapy against breast cancer. Acta Pharm Sin B 2019; 9:1061-1077. [PMID: 31649854 PMCID: PMC6804482 DOI: 10.1016/j.apsb.2019.03.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 03/08/2019] [Accepted: 03/14/2019] [Indexed: 12/11/2022] Open
Abstract
Recently, considerable attention in the field of cancer therapy has been focused on the mammalian rapamycin target (mTOR), inhibition of which could result in autophagic cell death (ACD). Though novel combination chemotherapy of autophagy inducers with chemotherapeutic agents is extensively investigated, nanomedicine-based combination therapy for ACD remains in infancy. In attempt to actively trigger ACD for synergistic chemotherapy, here we incorporated autophagy inducer rapamycin (RAP) into 7pep-modified PEG-DSPE polymer micelles (7pep-M-RAP) to specifically target and efficiently priming ACD of MCF-7 human breast cancer cells with high expression of transferrin receptor (TfR). Cytotoxic paclitaxel (PTX)-loaded micelle (7pep-M-PTX) was regarded as chemotherapeutic drug model. We discovered that with superior intracellular uptake in vitro and more tumor accumulation of micelles in vivo, 7pep-M-RAP exhibited excellent autophagy induction and synergistic antitumor efficacy with 7pep-M-PTX. Mechanism study further revealed that 7pep-M-RAP and 7pep-M-PTX used in combination provided enhanced efficacy through induction of both apoptosis- and mitochondria-associated autophagic cell death. Together, our findings suggested that the targeted excess autophagy may provide a rational strategy to improve therapeutic outcome of breast cancer, and simultaneous induction of ACD and apoptosis may be a promising anticancer modality.
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14
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Abeywickrama CS, Wijesinghe KJ, Stahelin RV, Pang Y. Red-emitting pyrene-benzothiazolium: unexpected selectivity to lysosomes for real-time cell imaging without alkalinizing effect. Chem Commun (Camb) 2019; 55:3469-3472. [PMID: 30839045 PMCID: PMC6446231 DOI: 10.1039/c9cc01068h] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A series of pyrene-benzothiazolium probes were synthesized. By replacing the pyridinium with a benzothiazolium unit, the selectivity of pyrene-derivatives is found to switch from nuclear to cellular lysosomes. New probes do not require proton participation and exhibit high biocompatibility and long-term imaging ability.
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15
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WIPI1, BAG1, and PEX3 Autophagy-Related Genes Are Relevant Melanoma Markers. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:1471682. [PMID: 30622661 PMCID: PMC6304818 DOI: 10.1155/2018/1471682] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 10/09/2018] [Indexed: 01/07/2023]
Abstract
ROS and oxidative stress may promote autophagy; on the other hand, autophagy may help reduce oxidative damages. According to the known interplay of ROS, autophagy, and melanoma onset, we hypothesized that autophagy-related genes (ARGs) may represent useful melanoma biomarkers. We therefore analyzed the gene and protein expression of 222 ARGs in human melanoma samples, from 5 independent expression databases (overall 572 patients). Gene expression was first evaluated in the GEO database. Forty-two genes showed extremely high ability to discriminate melanoma from nevi (63 samples) according to ROC (AUC ≥ 0.85) and Mann-Whitney (p < 0.0001) analyses. The 9 genes never related to melanoma before were then in silico validated in the IST online database. BAG1, CHMP2B, PEX3, and WIPI1 confirmed a strong differential gene expression, in 355 samples. A second-round validation performed on the Human Protein Atlas database showed strong differential protein expression for BAG1, PEX3, and WIPI1 in melanoma vs control samples, according to the image analysis of 80 human histological sections. WIPI1 gene expression also showed a significant prognostic value (p < 0.0001) according to 102 melanoma patients' survival data. We finally addressed in Oncomine database whether WIPI1 overexpression is melanoma-specific. Within more than 20 cancer types, the most relevant WIPI1 expression change (p = 0.00002; fold change = 3.1) was observed in melanoma. Molecular/functional relationships of the investigated molecules with melanoma and their molecular/functional network were analyzed via Chilibot software, STRING analysis, and gene ontology enrichment analysis. We conclude that WIPI1 (AUC = 0.99), BAG1 (AUC = 1), and PEX3 (AUC = 0.93) are relevant novel melanoma markers at both gene and protein levels.
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16
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Basit F, Mathan T, Sancho D, de Vries IJM. Human Dendritic Cell Subsets Undergo Distinct Metabolic Reprogramming for Immune Response. Front Immunol 2018; 9:2489. [PMID: 30455688 PMCID: PMC6230993 DOI: 10.3389/fimmu.2018.02489] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 10/09/2018] [Indexed: 12/31/2022] Open
Abstract
Toll-like receptor (TLR) agonists induce metabolic reprogramming, which is required for immune activation. We have investigated mechanisms that regulate metabolic adaptation upon TLR-stimulation in human blood DC subsets, CD1c+ myeloid DCs (mDCs) and plasmacytoid DCs (pDCs). We show that TLR-stimulation changes expression of genes regulating oxidative phosphorylation (OXPHOS) and glutamine metabolism in pDC. TLR-stimulation increases mitochondrial content and intracellular glutamine in an autophagy-dependent manner in pDC. TLR-induced glutaminolysis fuels OXPHOS in pDCs. Notably, inhibition of glutaminolysis and OXPHOS prevents pDC activation. Conversely, TLR-stimulation reduces mitochondrial content, OXPHOS activity and induces glycolysis in CD1c+ mDC. Inhibition of mitochondrial fragmentation or promotion of mitochondrial fusion impairs TLR-stimulation induced glycolysis and activation of CD1c+ mDCs. TLR-stimulation triggers BNIP3-dependent mitophagy, which regulates transcriptional activity of AMPKα1. BNIP3-dependent mitophagy is required for induction of glycolysis and activation of CD1c+ mDCs. Our findings reveal that TLR stimulation differentially regulates mitochondrial dynamics in distinct human DC subsets, which contributes to their activation.
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Affiliation(s)
- Farhan Basit
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, Netherlands
| | - Till Mathan
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, Netherlands
| | - David Sancho
- Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - I Jolanda M de Vries
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, Netherlands.,Department of Medical Oncology, Radboud University Medical Center, Nijmegen, Netherlands
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17
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Shi R, Guberman M, Kirshenbaum LA. Mitochondrial quality control: The role of mitophagy in aging. Trends Cardiovasc Med 2018; 28:246-260. [DOI: 10.1016/j.tcm.2017.11.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 12/25/2022]
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18
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Maiques O, Barceló C, Panosa A, Pijuan J, Orgaz JL, Rodriguez-Hernandez I, Matas-Nadal C, Tell G, Vilella R, Fabra A, Puig S, Sanz-Moreno V, Matias-Guiu X, Canti C, Herreros J, Marti RM, Macià A. T-type calcium channels drive migration/invasion in BRAFV600E melanoma cells through Snail1. Pigment Cell Melanoma Res 2018; 31:484-495. [PMID: 29385656 DOI: 10.1111/pcmr.12690] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 12/23/2017] [Indexed: 12/26/2022]
Abstract
Melanoma is a malignant tumor derived from melanocytes. Once disseminated, it is usually highly resistant to chemotherapy and is associated with poor prognosis. We have recently reported that T-type calcium channels (TTCCs) are overexpressed in melanoma cells and play an important role in melanoma progression. Importantly, TTCC pharmacological blockers reduce proliferation and deregulate autophagy leading to apoptosis. Here, we analyze the role of autophagy during migration/invasion of melanoma cells. TTCC Cav3.1 and LC3-II proteins are highly expressed in BRAFV600E compared with NRAS mutant melanomas, both in cell lines and biopsies. Chloroquine, pharmacological blockade, or gene silencing of TTCCs inhibit the autophagic flux and impair the migration and invasion capabilities, specifically in BRAFV600E melanoma cells. Snail1 plays an important role in motility and invasion of melanoma cells. We show that Snail1 is strongly expressed in BRAFV600E melanoma cells and patient biopsies, and its expression decreases when autophagy is blocked. These results demonstrate a role of Snail1 during BRAFV600E melanoma progression and strongly suggest that targeting macroautophagy and, particularly TTCCs, might be a good therapeutic strategy to inhibit metastasis of the most common melanoma type (BRAFV600E).
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Affiliation(s)
| | | | | | | | - Jose L Orgaz
- Tumour Plasticity Laboratory, Randall Division of Cell and Molecular Biophysics, New Hunt's House, King's College London, London, UK
| | - Irene Rodriguez-Hernandez
- Tumour Plasticity Laboratory, Randall Division of Cell and Molecular Biophysics, New Hunt's House, King's College London, London, UK
| | - Clara Matas-Nadal
- Department of Dermatology, Hospital Universitari Arnau de Vilanova, University of Lleida, IRBLleida, Lleida, Spain
| | - Gemma Tell
- Melanoma Unit, Department of Dermatology, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain.,Centre of Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Ramón Vilella
- Department of Immunology, Hospital Clínic, Barcelona, Spain
| | - Angels Fabra
- Molecular Oncology, Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Susana Puig
- Melanoma Unit, Department of Dermatology, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain.,Centre of Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Victoria Sanz-Moreno
- Tumour Plasticity Laboratory, Randall Division of Cell and Molecular Biophysics, New Hunt's House, King's College London, London, UK
| | - Xavier Matias-Guiu
- Department of Pathology and Molecular Genetics, Hospital Universitari Arnau de Vilanova, University of Lleida, IRBLleida, Lleida, Spain.,Centre of Biomedical Research on Cancer (CIBERONC), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | | | | | - Rosa M Marti
- Department of Dermatology, Hospital Universitari Arnau de Vilanova, University of Lleida, IRBLleida, Lleida, Spain.,Centre of Biomedical Research on Cancer (CIBERONC), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Anna Macià
- University of Lleida, IRBLleida, Lleida, Spain
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19
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Wang L, Guo W, Ma J, Dai W, Liu L, Guo S, Chen J, Wang H, Yang Y, Yi X, Wang G, Gao T, Zhu G, Li C. Aberrant SIRT6 expression contributes to melanoma growth: Role of the autophagy paradox and IGF-AKT signaling. Autophagy 2017; 14:518-533. [PMID: 29215322 DOI: 10.1080/15548627.2017.1384886] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Melanoma is among the most life-threatening cancers. The pathogenesis of melanoma has not been fully elucidated. Recently, dysregulated macroautophagy/autophagy has been found to play a critical but inconsistent role in modulating melanoma growth at different stages, with the regulatory mechanism unclear. The histone deacetylase SIRT6 (sirtuin 6) is a known autophagy regulator, and its involvement in cancer development has been reported. Therefore, we sought to determine the role of SIRT6 in melanoma growth and detect its possible link with autophagy in the current study. We initially observed that the expression of SIRT6 decreased in primary melanoma but increased in metastatic melanoma compared with melanocytic nevus. Notably, the expression of SIRT6 was significantly correlated with the expression of autophagy biomarkers including MAP1LC3/LC3 and SQSTM1/p62. Furthermore, SIRT6 suppressed the growth of primary melanoma but promoted metastatic melanoma development in an autophagy-dependent way in vitro. Moreover, SIRT6 exerted its regulation on melanoma growth via the IGF-AKT signaling pathway, and the intervention of AKT could partly reverse the effects of SIRT6 on melanoma growth by regulating autophagy. At last, we determined the effects of SIRT6 on melanoma development in vivo. Taken together, our findings demonstrate that the bimodal expression of SIRT6 at different melanoma stages plays a critical role in regulating melanoma growth through an autophagy-dependent manner, which indicates the potential of SIRT6 to be a biomarker and a therapeutic target in melanoma.
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Affiliation(s)
- Liwen Wang
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Weinan Guo
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Jinyuan Ma
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Wei Dai
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Lin Liu
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Sen Guo
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Jiaxi Chen
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Huina Wang
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Yuqi Yang
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Xiuli Yi
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Gang Wang
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Tianwen Gao
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Guannan Zhu
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
| | - Chunying Li
- a Department of Dermatology , Xijing hospital, Fourth Military Medical University , Xi'an , Shannxi , China
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20
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Liu X, Ardizzone A, Sui B, Anzola M, Ventosa N, Liu T, Veciana J, Belfield KD. Fluorenyl-Loaded Quatsome Nanostructured Fluorescent Probes. ACS OMEGA 2017; 2:4112-4122. [PMID: 30023713 PMCID: PMC6044886 DOI: 10.1021/acsomega.7b00779] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 07/18/2017] [Indexed: 05/25/2023]
Abstract
Delivery of hydrophobic materials in biological systems, for example, contrast agents or drugs, is an obdurate challenge, severely restricting the use of materials with otherwise advantageous properties. The synthesis and characterization of a highly stable and water-soluble nanovesicle, referred to as a quatsome (QS, vesicle prepared from cholesterol and amphiphilic quaternary amines), that allowed the nanostructuration of a nonwater soluble fluorene-based probe are reported. Photophysical properties of fluorenyl-quatsome nanovesicles were investigated via ultraviolet-visible absorption and fluorescence spectroscopy in various solvents. Colloidal stability and morphology of the nanostructured fluorescent probes were studied via cryogenic transmission electronic microscopy, revealing a "patchy" quatsome vascular morphology. As an example of the utility of these fluorescent nanoprobes, examination of cellular distribution was evaluated in HCT 116 (an epithelial colorectal carcinoma cell line) and COS-7 (an African green monkey kidney cell line) cell lines, demonstrating the selective localization of C-QS and M-QS vesicles in lysosomes with high Pearson's colocalization coefficient, where C-QS and M-QS refer to quatsomes prepared with hexadecyltrimethylammonium bromide or tetradecyldimethylbenzylammonium chloride, respectively. Further experiments demonstrated their use in time-dependent lysosomal tracking.
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Affiliation(s)
- Xinglei Liu
- Department
of Chemistry and Environmental Science, College of Science and Liberal
Arts, New Jersey Institute of Technology, 323 Martin Luther King, Jr., Blvd., Newark, New Jersey 07102, United States
| | - Antonio Ardizzone
- Institut
de Ciencia de Materials de Barcelona (CSIC)-CIBER-BBN, Campus Universitari
de Bellaterra, 08193 Cerdanyola, Spain
| | - Binglin Sui
- Department
of Chemistry and Environmental Science, College of Science and Liberal
Arts, New Jersey Institute of Technology, 323 Martin Luther King, Jr., Blvd., Newark, New Jersey 07102, United States
| | - Mattia Anzola
- Institut
de Ciencia de Materials de Barcelona (CSIC)-CIBER-BBN, Campus Universitari
de Bellaterra, 08193 Cerdanyola, Spain
| | - Nora Ventosa
- Institut
de Ciencia de Materials de Barcelona (CSIC)-CIBER-BBN, Campus Universitari
de Bellaterra, 08193 Cerdanyola, Spain
| | - Taihong Liu
- Department
of Chemistry and Environmental Science, College of Science and Liberal
Arts, New Jersey Institute of Technology, 323 Martin Luther King, Jr., Blvd., Newark, New Jersey 07102, United States
| | - Jaume Veciana
- Institut
de Ciencia de Materials de Barcelona (CSIC)-CIBER-BBN, Campus Universitari
de Bellaterra, 08193 Cerdanyola, Spain
| | - Kevin D. Belfield
- Department
of Chemistry and Environmental Science, College of Science and Liberal
Arts, New Jersey Institute of Technology, 323 Martin Luther King, Jr., Blvd., Newark, New Jersey 07102, United States
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21
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Abstract
PURPOSE OF REVIEW To provide examples of mitochondria-specific metabolic events that influence tumor cell biology, and of metabolism-related mitochondrial biomarkers and therapeutic targets in cancer cells. RECENT FINDINGS Cancer cell mitochondria are rewired to optimally serve the cancer cell under various conditions of cellular stress. The nonexhaustive list of mitochondrial alterations that support cancer cell proliferation, survival, and/or progression includes upregulation of oxidative metabolism and use of alternative substrates, oncometabolites, increased superoxide production, mutated mitochondrial DNA, and altered mitochondrial morphology and dynamics. Potential therapeutic targets include fatty acid oxidation, voltage-dependent anion channel-1, the pyruvate dehydrogenase complex, and Complex I. SUMMARY Some phenotypical traits, for example, chemoresistance and metastasis, are likely regulated by a fine-tuned balance between several metabolic processes and events that are upregulated in parallel and are also dependent on microenvironmental cues. Many metabolism-related mitochondrial biomarkers show prognostic value, but the biological interpretation of the data may be confounded by the overall metabolic status and context. Understanding metabolic regulation of stemness is important for targeting cancer stem cells. Therapeutic targeting of cancer cell mitochondria remains experimental but promising, and more predictive markers will be needed for metabolism-based treatments and personalized medicine.
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22
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Turriani E, Lázaro DF, Ryazanov S, Leonov A, Giese A, Schön M, Schön MP, Griesinger C, Outeiro TF, Arndt-Jovin DJ, Becker D. Treatment with diphenyl-pyrazole compound anle138b/c reveals that α-synuclein protects melanoma cells from autophagic cell death. Proc Natl Acad Sci U S A 2017; 114:E4971-E4977. [PMID: 28584093 PMCID: PMC5488931 DOI: 10.1073/pnas.1700200114] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Recent epidemiological and clinical studies have reported a significantly increased risk for melanoma in people with Parkinson's disease. Because no evidence could be obtained that genetic factors are the reason for the association between these two diseases, we hypothesized that of the three major Parkinson's disease-related proteins-α-synuclein, LRRK2, and Parkin-α-synuclein might be a major link. Our data, presented here, demonstrate that α-synuclein promotes the survival of primary and metastatic melanoma cells, which is the exact opposite of the effect that α-synuclein has on dopaminergic neurons, where its accumulation causes neuronal dysfunction and death. Because this detrimental effect of α-synuclein on neurons can be rescued by the small molecule anle138b, we explored its effect on melanoma cells. We found that treatment with anle138b leads to massive melanoma cell death due to a major dysregulation of autophagy, suggesting that α-synuclein is highly beneficial to advanced melanoma because it ensures that autophagy is maintained at a homeostatic level that promotes and ensures the cell's survival.
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Affiliation(s)
- Elisa Turriani
- Laboratory of Cellular Dynamics, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
| | - Diana F Lázaro
- Department of Experimental Neurodegeneration, University Medical Center Göttingen, 37073 Göttingen, Germany
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Georg-August-University Göttingen, 37073 Göttingen, Germany
| | - Sergey Ryazanov
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Georg-August-University Göttingen, 37073 Göttingen, Germany
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
| | - Andrei Leonov
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Georg-August-University Göttingen, 37073 Göttingen, Germany
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
| | - Armin Giese
- Center for Neuropathology and Prion Research, Ludwig-Maximilians-University, 81377 Munich, Germany
| | - Margarete Schön
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Michael P Schön
- Department of Dermatology, Venereology and Allergology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Christian Griesinger
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Georg-August-University Göttingen, 37073 Göttingen, Germany
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
| | - Tiago F Outeiro
- Department of Experimental Neurodegeneration, University Medical Center Göttingen, 37073 Göttingen, Germany
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain, Georg-August-University Göttingen, 37073 Göttingen, Germany
- Max Planck Institute for Experimental Medicine, 37075 Göttingen, Germany
| | - Donna J Arndt-Jovin
- Laboratory of Cellular Dynamics, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
| | - Dorothea Becker
- Department of Experimental Neurodegeneration, University Medical Center Göttingen, 37073 Göttingen, Germany;
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
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23
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Wang K, Shan Z, Duan L, Gong T, Liu F, Zhang Y, Wang Z, Shen J, Lei L. iTRAQ-based quantitative proteomic analysis of Yamanaka factors reprogrammed breast cancer cells. Oncotarget 2017; 8:34330-34339. [PMID: 28423718 PMCID: PMC5470971 DOI: 10.18632/oncotarget.16125] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 02/24/2017] [Indexed: 12/17/2022] Open
Abstract
Cancer cells had been developed to be reprogrammed into embryonic stem like cells by induced pluripotent stem cells (iPSCs) technology, however, the tumor differentiation/dedifferentiation mechanisms had not yet been analyzed on a genome-wide scale. Here, we inserted the four stem cell transcription factor genes OCT4, SOX2, C-MYC and KLF4 into MCF cells (MCFs), represented a female breast cancer cell type, and obtained iPSCs (Mcfips) in about 3 weeks. By using the LC MS/MS iTRAQ technology, we analyzed the proteomic changes between MCFs and Mcfips. Of identified 4,616 proteins totally, 247 and 142 differentially expressed (DE) proteins were found in Mcfips compared with human induce pluripotent stem cells (Hips) and MCFs, respectively. 35 co-up and 10 co-down regulated proteins were recognized in DE proteins. Above DE proteins were categorized with GO functional classification annotation and KEGG metabolic pathway analysis into biological processes. In the protein interaction network, we found 37 and 39 hubs interacted with more than one protein in Mcfips comparing to Hips, in addition, 25 and 9 hubs were identified in Mcfips comparing to MCFs. Importantly, the mitochondria, ribosome and tumor suppressor proteins were found to be core regulators of tumor reprogramming, which might contribute to understand the mechanisms in relation to the occurrences and progression of a tumor. Thus, our study provided a valuable data for exploring the possibility to normalize the malignant phenotype.
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Affiliation(s)
- Kun Wang
- Department of Histology and Embryology, Harbin Medical University, Harbin, China
| | - Zhiyan Shan
- Department of Histology and Embryology, Harbin Medical University, Harbin, China
- Embryo and Stem Cell Engineering Laboratory, Harbin Medical University, Harbin, China
| | - Lian Duan
- Department of Histology and Embryology, Harbin Medical University, Harbin, China
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Tiantian Gong
- Department of Histology and Embryology, Harbin Medical University, Harbin, China
| | - Feng Liu
- Department of Breast Surgery, Cancer Hospital of Harbin Medical University, Harbin, China
| | - Yue Zhang
- Department of Histology and Embryology, Harbin Medical University, Harbin, China
| | - Zhendong Wang
- Department of Histology and Embryology, Harbin Medical University, Harbin, China
- Embryo and Stem Cell Engineering Laboratory, Harbin Medical University, Harbin, China
| | - Jingling Shen
- Department of Histology and Embryology, Harbin Medical University, Harbin, China
- Embryo and Stem Cell Engineering Laboratory, Harbin Medical University, Harbin, China
| | - Lei Lei
- Department of Histology and Embryology, Harbin Medical University, Harbin, China
- Embryo and Stem Cell Engineering Laboratory, Harbin Medical University, Harbin, China
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188Re-Liposome Can Induce Mitochondrial Autophagy and Reverse Drug Resistance for Ovarian Cancer: From Bench Evidence to Preliminary Clinical Proof-of-Concept. Int J Mol Sci 2017; 18:ijms18050903. [PMID: 28441355 PMCID: PMC5454816 DOI: 10.3390/ijms18050903] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 04/17/2017] [Accepted: 04/20/2017] [Indexed: 12/13/2022] Open
Abstract
Despite standard treatment, about 70% of ovarian cancer will recur. Cancer stem cells (CSCs) have been implicated in the drug-resistance mechanism. Several drug resistance mechanisms have been proposed, and among these, autophagy plays a crucial role for the maintenance and tumorigenicity of CSCs. Compared to their differentiated counterparts, CSCs have been demonstrated to display a significantly higher level of autophagy flux. Moreover, mitophagy, a specific type of autophagy that selectively degrades excessive or damaged mitochondria, is shown to contribute to cancer progression and recurrence in several types of tumors. Nanomedicine has been shown to tackle the CSCs problem by overcoming drug resistance. In this work, we developed a nanomedicine, 188Re-liposome, which was demonstrated to target autophagy and mitophagy in the tumor microenvironment. Of note, the inhibition of autophagy and mitophagy could lead to significant tumor inhibition in two xenograft animal models. Lastly, we presented two cases of recurrent ovarian cancer, both in drug resistance status that received a level I dose from a phase I clinical trial. Both cases developing drug resistance showed drug sensitivity to 188Re-liposome. These results suggest that inhibition of autophagy and mitophagy by a nanomedicine may be a novel strategy to overcome drug resistance in ovarian cancer.
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25
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Pramanik SK, Sreedharan S, Singh H, Green NH, Smythe C, Thomas JA, Das A. Imaging cellular trafficking processes in real time using lysosome targeted up-conversion nanoparticles. Chem Commun (Camb) 2017; 53:12672-12675. [DOI: 10.1039/c7cc08185e] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Peptide conjugated upconverting nanoparticles for specific imaging of lysosome
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Affiliation(s)
| | | | - Harwinder Singh
- CSIR-Central Salt & Marine Chemicals Research Institute
- Bhavnagar 364002
- India
| | - Nicola H. Green
- Department of Materials Science and Engineering
- Kroto Research Institute
- North Campus
- Broad Lane
- University of Sheffield
| | - Carl Smythe
- Department of Biomedical Science
- University of Sheffield
- Sheffield
- UK
| | - Jim. A. Thomas
- Department of Chemistry
- University of Sheffield
- Sheffield
- UK
| | - Amitava Das
- CSIR-Central Salt & Marine Chemicals Research Institute
- Bhavnagar 364002
- India
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26
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Doxorubicin-induced mitophagy contributes to drug resistance in cancer stem cells from HCT8 human colorectal cancer cells. Cancer Lett 2016; 388:34-42. [PMID: 27913197 DOI: 10.1016/j.canlet.2016.11.018] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 11/02/2016] [Accepted: 11/17/2016] [Indexed: 12/14/2022]
Abstract
Cancer stem cells (CSCs) are known to be drug resistant. Mitophagy selectively degrades unnecessary or damaged mitochondria by autophagy during cellular stress. To investigate the potential role of mitophagy in drug resistance in CSCs, we purified CD133+/CD44+ CSCs from HCT8 human colorectal cancer cells and then exposed to doxorubicin (DXR). Compared with parental cells, CSCs were more resistant to DXR treatment. Although DXR treatment enhanced autophagy levels in both cell types, the inhibition of autophagy by ATG7 silencing significantly increased the toxicity of DXR only in parental cells, not in CSCs. Interestingly, the level of mitochondrial superoxide was detected to be significantly lower in CSCs than in parental cells after DXR treatment. Furthermore, the mitophagy level and expression of BNIP3L, a mitophagy regulator, were significantly higher in CSCs than in parental cells after DXR treatment. Silencing BNIP3L significantly halted mitophagy and enhanced the sensitivity to DXR in CSCs. Our data suggested that mitophagy, but not non-selective autophagy, likely contributes to drug resistance in CSCs isolated from HCT8 cells. Further studies in other cancer cell lines will be needed to confirm our findings.
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27
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Demirsoy S, Martin S, Maes H, Agostinis P. Adapt, Recycle, and Move on: Proteostasis and Trafficking Mechanisms in Melanoma. Front Oncol 2016; 6:240. [PMID: 27896217 PMCID: PMC5108812 DOI: 10.3389/fonc.2016.00240] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 10/27/2016] [Indexed: 12/21/2022] Open
Abstract
Melanoma has emerged as a paradigm of a highly aggressive and plastic cancer, capable to co-opt the tumor stroma in order to adapt to the hostile microenvironment, suppress immunosurveillance mechanisms, and disseminate. In particular, oncogene- and aneuploidy-driven dysregulations of proteostasis in melanoma cells impose a rewiring of central proteostatic processes, such as the heat shock and unfolded protein responses, autophagy, and the endo-lysosomal system, to avoid proteotoxicity. Research over the past decade has indicated that alterations in key nodes of these proteostasis pathways act in conjunction with crucial oncogenic drivers to increase intrinsic adaptations of melanoma cells against proteotoxic stress, modulate the high metabolic demand of these cancer cells and the interface with other stromal cells, through the heightened release of soluble factors or exosomes. Here, we overview and discuss how key proteostasis pathways and vesicular trafficking mechanisms are turned into vital conduits of melanoma progression, by supporting cancer cell's adaptation to the microenvironment, limiting or modulating the ability to respond to therapy and fueling melanoma dissemination.
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Affiliation(s)
- Seyma Demirsoy
- Laboratory for Cell Death Research and Therapy, Department of Cellular and Molecular Medicine, KU Leuven , Leuven , Belgium
| | - Shaun Martin
- Laboratory for Cellular Transport Systems, Department of Cellular and Molecular Medicine, KU Leuven , Leuven , Belgium
| | - Hannelore Maes
- Laboratory for Cell Death Research and Therapy, Department of Cellular and Molecular Medicine, KU Leuven , Leuven , Belgium
| | - Patrizia Agostinis
- Laboratory for Cell Death Research and Therapy, Department of Cellular and Molecular Medicine, KU Leuven , Leuven , Belgium
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28
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Chen Z, Liu X, Ma S. The Roles of Mitochondria in Autophagic Cell Death. Cancer Biother Radiopharm 2016; 31:269-276. [PMID: 27754749 DOI: 10.1089/cbr.2016.2057] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Zongyan Chen
- Key Laboratory of Radiobiology (Ministry of Health), School of Public Health, Jilin University, Changchun, China
- Department of Diagnostic Imaging, Center for Radiological Research, Weihai Chest Hospital, Weihai, China
| | - Xiaodong Liu
- Key Laboratory of Radiobiology (Ministry of Health), School of Public Health, Jilin University, Changchun, China
- Department of Radiation Oncology, Center for Radiological Research, The 2nd Hospital Affiliated to Jilin University, Changchun, China
| | - Shumei Ma
- Key Laboratory of Radiobiology (Ministry of Health), School of Public Health, Jilin University, Changchun, China
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29
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Parkin and mitophagy in cancer. Oncogene 2016; 36:1315-1327. [PMID: 27593930 DOI: 10.1038/onc.2016.302] [Citation(s) in RCA: 182] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 07/04/2016] [Accepted: 07/04/2016] [Indexed: 02/07/2023]
Abstract
Mitophagy, the selective engulfment and clearance of mitochondria, is essential for the homeostasis of a healthy network of functioning mitochondria and prevents excessive production of cytotoxic reactive oxygen species from damaged mitochondria. The mitochondrially targeted PTEN-induced kinase-1 (PINK1) and the E3 ubiquitin ligase Parkin are well-established synergistic mediators of the mitophagy of dysfunctional mitochondria. This pathway relies on the ubiquitination of a number of mitochondrial outer membrane substrates and subsequent docking of autophagy receptor proteins to selectively clear mitochondria. There are also alternate Parkin-independent mitophagy pathways mediated by BCL2/adenovirus E1B 19 kDa protein-interacting protein 3 and Nip-3 like protein X as well as other effectors. There is increasing evidence that ablation of mitophagy accelerates a number of pathologies. Familial Parkinsonism is associated with loss-of-function mutations in PINK1 and Parkin. A growing number of studies have observed a correlation between impaired Parkin activity and enhanced cancer development, leading to the emerging concept that Parkin activity, or mitophagy in general, is a tumour suppression mechanism. This review examines the molecular mechanisms of mitophagy and highlights the potential links between Parkin and the hallmarks of cancer that may influence tumour development and progression.
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30
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Violacein induces death of RAS-mutated metastatic melanoma by impairing autophagy process. Tumour Biol 2016; 37:14049-14058. [PMID: 27502397 DOI: 10.1007/s13277-016-5265-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 07/15/2016] [Indexed: 12/22/2022] Open
Abstract
Treatment of metastatic melanoma still remains a challenge, since in advanced stage it is refractory to conventional treatments. Most patients with melanoma have either B-RAF or N-RAS mutations, and these oncogenes lead to activation of the RAS-RAF-MEK-ERK and AKT signal pathway, keeping active the proliferation and survival pathways in the cell. Therefore, the identification of small molecules that block metastatic cell proliferation and induce cell death is needed. Violacein, a pigment produced by Chromobacterium violaceum found in Amazon River, has been used by our group as a biotool for scrutinizing signaling pathways associated with proliferation, survival, aggressiveness, and resistance of cancer cells. In the present study, we demonstrate that violacein diminished the viability of RAS- and RAF-mutated melanoma cells (IC50 value ∼500 nM), and more important, this effect was not abolished after treatment medium removal. Furthermore, violacein was able to reduce significantly the invasion capacity of metastatic melanoma cells in 3D culture. In the molecular context, we have shown for the first time that violacein causes a strong drop on histone deacetylase 6 expression, a proliferating activator, in melanoma cells. Besides, an inhibition of AXL and AKT was detected. All these molecular events propitiate an inhibition of autophagy, and consequently, melanoma cell death by apoptosis.
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García-Fernández M, Karras P, Checinska A, Cañón E, Calvo GT, Gómez-López G, Cifdaloz M, Colmenar A, Espinosa-Hevia L, Olmeda D, Soengas MS. Metastatic risk and resistance to BRAF inhibitors in melanoma defined by selective allelic loss of ATG5. Autophagy 2016; 12:1776-1790. [PMID: 27464255 DOI: 10.1080/15548627.2016.1199301] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Melanoma is a paradigm of aggressive tumors with a complex and heterogeneous genetic background. Still, melanoma cells frequently retain developmental traits that trace back to lineage specification programs. In particular, lysosome-associated vesicular trafficking is emerging as a melanoma-enriched lineage dependency. However, the contribution of other lysosomal functions such as autophagy to melanoma progression is unclear, particularly in the context of metastasis and resistance to targeted therapy. Here we mined a broad spectrum of cancers for a meta-analysis of mRNA expression, copy number variation and prognostic value of 13 core autophagy genes. This strategy identified heterozygous loss of ATG5 at chromosome band 6q21 as a distinctive feature of advanced melanomas. Importantly, partial ATG5 loss predicted poor overall patient survival in a manner not shared by other autophagy factors and not recapitulated in other tumor types. This prognostic relevance of ATG5 copy number was not evident for other 6q21 neighboring genes. Melanocyte-specific mouse models confirmed that heterozygous (but not homozygous) deletion of Atg5 enhanced melanoma metastasis and compromised the response to targeted therapy (exemplified by dabrafenib, a BRAF inhibitor in clinical use). Collectively, our results support ATG5 as a therapeutically relevant dose-dependent rheostat of melanoma progression. Moreover, these data have important translational implications in drug design, as partial blockade of autophagy genes may worsen (instead of counteracting) the malignant behavior of metastatic melanomas.
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Affiliation(s)
- María García-Fernández
- a Melanoma Laboratory , Molecular Oncology Program, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Panagiotis Karras
- a Melanoma Laboratory , Molecular Oncology Program, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Agnieszka Checinska
- a Melanoma Laboratory , Molecular Oncology Program, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Estela Cañón
- a Melanoma Laboratory , Molecular Oncology Program, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Guadalupe T Calvo
- a Melanoma Laboratory , Molecular Oncology Program, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Gonzalo Gómez-López
- b Bioinformatics Unit , Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Metehan Cifdaloz
- a Melanoma Laboratory , Molecular Oncology Program, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Angel Colmenar
- a Melanoma Laboratory , Molecular Oncology Program, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - Luis Espinosa-Hevia
- c Cytogenetics Unit , Spanish National Cancer Research Center (CNIO) , Madrid , Spain
| | - David Olmeda
- a Melanoma Laboratory , Molecular Oncology Program, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
| | - María S Soengas
- a Melanoma Laboratory , Molecular Oncology Program, Spanish National Cancer Research Centre (CNIO) , Madrid , Spain
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A combination of high dose rate (10X FFF/2400 MU/min/10 MV X-rays) and total low dose (0.5 Gy) induces a higher rate of apoptosis in melanoma cells in vitro and superior preservation of normal melanocytes. Melanoma Res 2016; 25:376-89. [PMID: 26177150 PMCID: PMC4560269 DOI: 10.1097/cmr.0000000000000174] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The aim of this study was to determine the apoptotic effects, toxicity, and radiosensitization of total low dose irradiation delivered at a high dose rate in vitro to melanoma cells, normal human epidermal melanocytes (HEM), or normal human dermal fibroblasts (HDF) and to study the effect of mitochondrial inhibition in combination with radiation to enhance apoptosis in melanoma cells. Cells irradiated using 10X flattening filter-free (FFF) 10 MV X-rays at a dose rate of 400 or 2400 MU/min and a total dose of 0.25–8 Gy were analyzed by cell/colony counting, MitoTracker, MTT, and DNA-damage assays, as well as by quantitative real-time reverse transcriptase PCR in the presence or absence of mitochondrial respiration inhibitors. A dose rate of 2400 MU/min killed on average five-fold more melanoma cells than a dose rate 400 MU/min at a total dose of 0.5 Gy and preserved 80% survival of HEM and 90% survival of HDF. Increased apoptosis at the 2400 MU/min dose rate is mediated by greater DNA damage, reduced cell proliferation, upregulation of apoptotic genes, and downregulation of cell cycle genes. HEM and HDF were relatively unharmed at 2400 MU/min. Radiation induced upregulation of mitochondrial respiration in both normal and cancer cells, and blocking the respiration with inhibitors enhanced apoptosis only in melanoma cells. A high dose rate with a low total dose (2400 MU/min, 0.5 Gy/10X FFF 10 MV X-rays) enhances radiosensitivity of melanoma cells while reducing radiotoxicity toward HEM and HDF. Selective cytotoxicity of melanoma cells is increased by blocking mitochondrial respiration.
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33
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Meng XX, Yao M, Zhang XD, Xu HX, Dong Q. ER stress-induced autophagy in melanoma. Clin Exp Pharmacol Physiol 2016; 42:811-6. [PMID: 26096022 DOI: 10.1111/1440-1681.12436] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 05/30/2015] [Indexed: 02/05/2023]
Abstract
The activation of RAF-MEK-extracellular signal-regulated kinase (ERK) mitogen-activated protein kinase cascade by v-raf murine sarcoma viral oncogene homolog B1 (BRAF)(V600E) mutation is a key alteration in melanoma. Although BRAF inhibitor (BRAFi) has achieved remarkable clinical success, the positive response to BRAFi is not sustainable, and the initial clinical benefit is eventually barred by the development of resistance to BRAFi. There is growing evidence to suggest that endoplasmic reticulum (ER) stress-induced autophagy could be a potential pro-survival mechanism that contributes to genesis of melanoma and to the resistance to BRAFi. ER stress-induced autophagy is an evolutionarily conserved membrane process. By degrading and recycling proteins and organelles via the formation of autophagous vesicles and their fusion with lysosomes, the autophagy plays a key role in homeostasis as well as pathological processes. In this review, we examine the autophagy phenomenon in melanocytic nevus, primary and metastatic melanoma, and its significance in BRAFi-resistant melanoma.
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Affiliation(s)
- Xiao-Xiao Meng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Mu Yao
- Discipline of Endocrinology, Royal Prince Alfred Hospital and Charles Perkins Centre, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Xu Dong Zhang
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Newcastle, NSW, Australia
| | - Hong-Xi Xu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qihan Dong
- Discipline of Endocrinology, Royal Prince Alfred Hospital and Charles Perkins Centre, Sydney Medical School, University of Sydney, Sydney, NSW, Australia.,School of Science and Health, University of Western Sydney, Sydney, NSW, Australia
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34
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Sheng X, Arnoldussen YJ, Storm M, Tesikova M, Nenseth HZ, Zhao S, Fazli L, Rennie P, Risberg B, Wæhre H, Danielsen H, Mills IG, Jin Y, Hotamisligil G, Saatcioglu F. Divergent androgen regulation of unfolded protein response pathways drives prostate cancer. EMBO Mol Med 2016; 7:788-801. [PMID: 25864123 PMCID: PMC4459818 DOI: 10.15252/emmm.201404509] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The unfolded protein response (UPR) is a homeostatic mechanism to maintain endoplasmic reticulum (ER) function. The UPR is activated by various physiological conditions as well as in disease states, such as cancer. As androgens regulate secretion and development of the normal prostate and drive prostate cancer (PCa) growth, they may affect UPR pathways. Here, we show that the canonical UPR pathways are directly and divergently regulated by androgens in PCa cells, through the androgen receptor (AR), which is critical for PCa survival. AR bound to gene regulatory sites and activated the IRE1α branch, but simultaneously inhibited PERK signaling. Inhibition of the IRE1α arm profoundly reduced PCa cell growth in vitro as well as tumor formation in preclinical models of PCa in vivo. Consistently, AR and UPR gene expression were correlated in human PCa, and spliced XBP-1 expression was significantly upregulated in cancer compared with normal prostate. These data establish a genetic switch orchestrated by AR that divergently regulates the UPR pathways and suggest that targeting IRE1α signaling may have therapeutic utility in PCa.
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Affiliation(s)
- Xia Sheng
- Department of Biosciences, University of Oslo, Oslo, Norway
| | | | | | | | | | - Sen Zhao
- Department of Biosciences, University of Oslo, Oslo, Norway
| | - Ladan Fazli
- The Vancouver Prostate Centre, Vancouver, BC, Canada
| | - Paul Rennie
- The Vancouver Prostate Centre, Vancouver, BC, Canada
| | - Bjørn Risberg
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway Division of Pathology, Oslo University Hospital, Oslo, Norway
| | - Håkon Wæhre
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway Division of Surgery, Oslo University Hospital, Oslo, Norway Center for Cancer Biomedicine, University of Oslo, Oslo, Norway
| | - Håvard Danielsen
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway Center for Cancer Biomedicine, University of Oslo, Oslo, Norway Department of Informatics, University of Oslo, Oslo, Norway
| | - Ian G Mills
- The Centre for Molecular Medicine Norway, University of Oslo, Oslo, Norway Department of Urology, Oslo University Hospital, Oslo, Norway Department of Cancer Prevention, Institute of Cancer Research, Radium Hospital, Oslo, Norway
| | - Yang Jin
- Department of Biosciences, University of Oslo, Oslo, Norway
| | - Gökhan Hotamisligil
- Department of Genetics and Complex Diseases, Harvard School of Public Health, Harvard University, Boston, MA, USA
| | - Fahri Saatcioglu
- Department of Biosciences, University of Oslo, Oslo, Norway Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway
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35
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MicroRNA 211 Functions as a Metabolic Switch in Human Melanoma Cells. Mol Cell Biol 2016; 36:1090-108. [PMID: 26787841 DOI: 10.1128/mcb.00762-15] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 01/12/2016] [Indexed: 12/13/2022] Open
Abstract
MicroRNA 211 (miR-211) negatively regulates genes that drive invasion of metastatic melanoma. Compared to normal human melanocytes, miR-211 expression is significantly reduced or absent in nonpigmented melanoma cells and lost during human melanoma progression. To investigate the molecular mechanism of its tumor suppressor function, miR-211 was ectopically expressed in nonpigmented melanoma cells. Ectopic expression of miR-211 reduced hypoxia-inducible factor 1α (HIF-1α) protein levels and decreased cell growth during hypoxia. HIF-1α protein loss was correlated with the downregulation of a miR-211 target gene, pyruvate dehydrogenase kinase 4 (PDK4). We present evidence that resumption of miR-211-mediated downregulation of PDK4 in melanoma cells causes inhibition of invasion by nonpigmented melanomas via HIF-1α protein destabilization. Thus, the tumor suppressor miR-211 acts as a metabolic switch, and its loss is expected to promote cancer hallmarks in human melanomas. Melanoma, one of the deadliest forms of skin cancer, kills nearly 10,000 people in the United States per year. We had previously shown that a small noncoding RNA, termed miR-211, suppresses invasion and the growth of aggressive melanoma cells. The results presented here support the hypothesis that miR-211 loss in melanoma cells causes abnormal regulation of energy metabolism, which in turn allows cancer cells to survive under low oxygen concentrations-a condition that generally kills normal cells. These findings highlight a novel mechanism of melanoma formation: miR-211 is a molecular switch that is turned off in melanoma cells, raising the hope that in the future we might be able to turn the switch back on, thus providing a better treatment option for melanoma.
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36
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Chen X, Bi Y, Wang T, Li P, Yan X, Hou S, Bammert CE, Ju J, Gibson KM, Pavan WJ, Bi L. Lysosomal targeting with stable and sensitive fluorescent probes (Superior LysoProbes): applications for lysosome labeling and tracking during apoptosis. Sci Rep 2015; 5:9004. [PMID: 25758662 PMCID: PMC4355733 DOI: 10.1038/srep09004] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 02/04/2015] [Indexed: 12/14/2022] Open
Abstract
Intracellular pH plays an important role in the response to cancer invasion. We have designed and synthesized a series of new fluorescent probes (Superior LysoProbes) with the capacity to label acidic organelles and monitor lysosomal pH. Unlike commercially available fluorescent dyes, Superior LysoProbes are lysosome-specific and are highly stable. The use of Superior LysoProbes facilitates the direct visualization of the lysosomal response to lobaplatin elicited in human chloangiocarcinoma (CCA) RBE cells, using confocal laser scanning microscopy. Additionally, we have characterized the role of lysosomes in autophagy, the correlation between lysosome function and microtubule strength, and the alteration of lysosomal morphology during apoptosis. Our findings indicate that Superior LysoProbes offer numerous advantages over previous reagents to examine the intracellular activities of lysosomes.
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Affiliation(s)
- Xin Chen
- Department of Chemistry, Michigan Technological University, Houghton, MI 49931
| | - Yue Bi
- Second Hospital of HeBei Medical University, Shijiazhuang, China 050000
| | - Tianyang Wang
- Second Hospital of HeBei Medical University, Shijiazhuang, China 050000
| | - Pengfei Li
- Second Hospital of HeBei Medical University, Shijiazhuang, China 050000
| | - Xin Yan
- Department of Chemistry, Michigan Technological University, Houghton, MI 49931
| | - Shanshan Hou
- Department of Chemistry, Michigan Technological University, Houghton, MI 49931
| | - Catherine E Bammert
- Department of Chemistry, Michigan Technological University, Houghton, MI 49931
| | - Jingfang Ju
- Translational Research Laborator, Stony Brook Mediciney, Stony Brook, NY 11794
| | - K Michael Gibson
- Experimental and Systems pharmacology, College of Pharmacy, Washington State University, Spokane, WA 99202
| | - William J Pavan
- National Human Genome Research Institute, NIH, Bethesda, Maryland 20892
| | - Lanrong Bi
- Department of Chemistry, Michigan Technological University, Houghton, MI 49931
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37
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Highly stable and sensitive fluorescent probes (LysoProbes) for lysosomal labeling and tracking. Sci Rep 2015; 5:8576. [PMID: 25715948 PMCID: PMC4341211 DOI: 10.1038/srep08576] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 01/19/2015] [Indexed: 12/11/2022] Open
Abstract
We report the design, synthesis and application of several new fluorescent probes (LysoProbes I-VI) that facilitate lysosomal pH monitoring and characterization of lysosome-dependent apoptosis. LysoProbes are superior to commercially available lysosome markers since the fluorescent signals are both stable and highly selective, and they will aid in characterization of lysosome morphology and trafficking. We predict that labeling of cancer cells and solid tumor tissues with LysoProbes will provide an important new tool for monitoring the role of lysosome trafficking in cancer invasion and metastasis.
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