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Bae J, Park SJ. The Combination of Oolonghomobisflavan B and Diallyl Disulfide Induces Apoptotic Cell Death via 67-kDa Laminin Receptor/Cyclic Guanosine Monophosphate in Acute Myeloid Leukemia Cells. Curr Issues Mol Biol 2024; 46:2444-2455. [PMID: 38534770 DOI: 10.3390/cimb46030154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/07/2024] [Accepted: 03/12/2024] [Indexed: 03/28/2024] Open
Abstract
Diallyl disulfide (DADS) is a well-known principal functional component derived from garlic (Allium sativum) that has various health benefits. Previously, we identified a 67-kDa laminin receptor, a receptor for oolong tea polyphenol oolonghomobisflavan B (OHBFB). However, its molecular mechanisms still remain to be elucidated. Here, we show that DADS synergistically enhanced the effect of the oolong tea polyphenol oolonghomobisflavan B (OHBFB), which induces apoptosis in acute myeloid leukemia (AML) cancer cells without affecting normal human peripheral blood mononuclear cells (PBMCs). The underlying mechanism of OHBFB-induced anti-AML effects involves the upregulation of the 67-kDa laminin receptor/endothelial nitric oxide synthase/cyclic guanosine monophosphate (cGMP)/protein kinase c delta (PKCδ)/acid sphingomyelinase (ASM)/cleaved caspase-3 signaling pathway. In conclusion, we show that the combination of OHBFB and DADS synergistically induced apoptotic cell death in AML cells through activation of 67LR/cGMP/PKCδ/ASM signaling pathway. Moreover, in this mechanism, we demonstrate DADS may reduce the enzyme activity of phosphodiesterase, which is a negative regulator of cGMP that potentiates OHBFB-induced AML apoptotic cell death without affecting normal PBMCs.
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Affiliation(s)
- Jaehoon Bae
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, 181 Ipsin-gil, Jeongeup-si 56212, Republic of Korea
| | - Su-Jin Park
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, 181 Ipsin-gil, Jeongeup-si 56212, Republic of Korea
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Bae J, Kumazoe M, Park S, Fujimura Y, Tachibana H. The anti-cancer effect of epigallocatechin-3-O-gallate against multiple myeloma cells is potentiated by 5,7-dimethoxyflavone. FEBS Open Bio 2023; 13:2147-2156. [PMID: 37730921 PMCID: PMC10626272 DOI: 10.1002/2211-5463.13708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 08/21/2023] [Accepted: 09/19/2023] [Indexed: 09/22/2023] Open
Abstract
(-)-Epigallocatechin-3-O-gallate (EGCG) is one of the major components of green tea polyphenol. Previous studies have shown that EGCG induces cancer-specific cell death in vitro and in vivo without causing severe side effects. However, the anti-cancer effect of EGCG alone is limited. 5,7-dimethoxyflavone (5,7-DMF), one of the principal functional components of black ginger (Kaempferia parviflora), also exerts anti-cancer effects. Here, we show that 5,7-DMF synergistically enhances the anti-cancer effect of EGCG in multiple myeloma cells by potentiating EGCG-induced intracellular cyclic guanosine monophosphate (cGMP) production. Moreover, the combination of EGCG and 5,7-DMF induces apoptotic cell death in multiple myeloma cells, and this is accompanied by activation of the cGMP/acid sphingomyelinase (ASM)/cleaved caspase-3 pathway. In conclusion, we have shown that 5,7-DMF enhances the anti-cancer effect of EGCG by upregulating cGMP in multiple myeloma cells.
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Affiliation(s)
- Jaehoon Bae
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of AgricultureKyushu UniversityFukuokaJapan
- Functional Biomaterial Research CenterKorea Research Institute of Bioscience and BiotechnologyJeongeup‐siKorea
| | - Motofumi Kumazoe
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of AgricultureKyushu UniversityFukuokaJapan
| | - Su‐Jin Park
- Functional Biomaterial Research CenterKorea Research Institute of Bioscience and BiotechnologyJeongeup‐siKorea
| | - Yoshinori Fujimura
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of AgricultureKyushu UniversityFukuokaJapan
| | - Hirofumi Tachibana
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of AgricultureKyushu UniversityFukuokaJapan
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3
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Stati G, Passaretta F, Gindraux F, Centurione L, Di Pietro R. The Role of the CREB Protein Family Members and the Related Transcription Factors in Radioresistance Mechanisms. Life (Basel) 2021; 11:life11121437. [PMID: 34947968 PMCID: PMC8706059 DOI: 10.3390/life11121437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 12/02/2021] [Accepted: 12/16/2021] [Indexed: 02/05/2023] Open
Abstract
In the framework of space flight, the risk of radiation carcinogenesis is considered a "red" risk due to the high likelihood of occurrence as well as the high potential impact on the quality of life in terms of disease-free survival after space missions. The cyclic AMP response element-binding protein (CREB) is overexpressed both in haematological malignancies and solid tumours and its expression and function are modulated following irradiation. The CREB protein is a transcription factor and member of the CREB/activating transcription factor (ATF) family. As such, it has an essential role in a wide range of cell processes, including cell survival, proliferation, and differentiation. Among the CREB-related nuclear transcription factors, NF-κB and p53 have a relevant role in cell response to ionising radiation. Their expression and function can decide the fate of the cell by choosing between death or survival. The aim of this review was to define the role of the CREB/ATF family members and the related transcription factors in the response to ionising radiation of human haematological malignancies and solid tumours.
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Affiliation(s)
- Gianmarco Stati
- Department of Medicine and Ageing Sciences, G. d’Annunzio University of Chieti-Pescara, 66100 Chieti, Italy; (F.P.); (L.C.); (R.D.P.)
- Correspondence: ; Tel.: +39-08713554567
| | - Francesca Passaretta
- Department of Medicine and Ageing Sciences, G. d’Annunzio University of Chieti-Pescara, 66100 Chieti, Italy; (F.P.); (L.C.); (R.D.P.)
| | - Florelle Gindraux
- Laboratoire de Nanomédecine, Imagerie, Thérapeutique EA 4662, Université Bourgogne Franche-Comté, 25030 Besançon, France;
- Service de Chirurgie Orthopédique, Traumatologique et Plastique, CHU, 25030 Besançon, France
| | - Lucia Centurione
- Department of Medicine and Ageing Sciences, G. d’Annunzio University of Chieti-Pescara, 66100 Chieti, Italy; (F.P.); (L.C.); (R.D.P.)
| | - Roberta Di Pietro
- Department of Medicine and Ageing Sciences, G. d’Annunzio University of Chieti-Pescara, 66100 Chieti, Italy; (F.P.); (L.C.); (R.D.P.)
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Bae J, Kumazoe M, Takeuchi C, Hidaka S, Fujimura Y, Tachibana H. Epigallocatechin-3-O-gallate induces acid sphingomyelinase activation through activation of phospholipase C. Biochem Biophys Res Commun 2019; 520:186-191. [PMID: 31585731 DOI: 10.1016/j.bbrc.2019.09.102] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 09/24/2019] [Indexed: 02/06/2023]
Abstract
Epigallocatechin-3-O-gallate (EGCG)-induced cyclic guanosine monophosphate (cGMP) plays a crucial role in EGCG-induced cell death in various types of cancer cells. However, little is known regarding the early molecular events after cGMP induction. In this study, we showed that cGMP induction is sufficient to induce the phosphorylation of protein kinase C delta (PKCδ) at Ser664, the crucial kinase for EGCG-induced activation of acid sphingomyelinase (ASM). Using a chemical inhibitor library, we revealed that the inhibitors of the negative regulators of diacylglycerol strongly increase the effect of EGCG. We also showed that EGCG treatment increased phospholipase C (PLC) activity, and the same results were obtained with cGMP inducer treatment. EGCG-induced ASM activation was completely suppressed by pharmacological inhibition of PLC. Collectively, EGCG-induced cGMP activated the cGMP/PLC/PKCδ/ASM signaling axis in multiple myeloma cells.
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Affiliation(s)
- Jaehoon Bae
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan
| | - Motofumi Kumazoe
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan
| | - Chieri Takeuchi
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan
| | - Shiori Hidaka
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan
| | - Yoshinori Fujimura
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan
| | - Hirofumi Tachibana
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 819-0395, Japan.
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Kalal BS, Fathima F, Pai VR, Sanjeev G, Krishna CM, Upadhya D. Inhibition of ERK1/2 or AKT Activity Equally Enhances Radiation Sensitization in B16F10 Cells. World J Oncol 2018; 9:21-28. [PMID: 29581812 PMCID: PMC5862079 DOI: 10.14740/wjon1088w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 02/28/2018] [Indexed: 12/11/2022] Open
Abstract
Background The aim of the study was to evaluate the radiation sensitizing ability of ERK1/2, PI3K-AKT and JNK inhibitors in highly radiation resistant and metastatic B16F10 cells which carry wild-type Ras and Braf. Methods Mouse melanoma cell line B16F10 was exposed to 1.0, 2.0 and 3.0 Gy of electron beam radiation. Phosphorylated ERK1/2, AKT and JNK levels were estimated by ELISA. Cells were exposed to 2.0 and 3.0 Gy of radiation with or without prior pharmacological inhibition of ERK1/2, AKT as well as JNK pathways. Cell death induced by radiation as well as upon inhibition of these pathways was measured by TUNEL assay using flow cytometry. Results Exposure of B16F10 cells to 1.0, 2.0 and 3.0 Gy of electron beam irradiation triggered an increase in all the three phosphorylated proteins compared to sham-treated and control groups. B16F10 cells pre-treated with either ERK1/2 or AKT inhibitors equally enhanced radiation-induced cell death at 2.0 as well as 3.0 Gy (P < 0.001), while inhibition of JNK pathway increased radiation-induced cell death to a lesser extent. Interestingly combined inhibition of ERK1/2 or AKT pathways did not show additional cell death compared to individual ERK1/2 or AKT inhibition. This indicates that ERK1/2 or AKT mediates radiation resistance through common downstream molecules in B16F10 cells. Conclusions Even without activating mutations in Ras or Braf genes, ERK1/2 and AKT play a critical role in B16F10 cell survival upon radiation exposure and possibly act through common downstream effector/s.
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Affiliation(s)
- Bhuvanesh Sukhlal Kalal
- Department of Biochemistry, Yenepoya Medical College, Yenepoya University, Mangalore, India.,Yenepoya Research Centre, Yenepoya University, Mangalore, India
| | - Faraz Fathima
- Yenepoya Research Centre, Yenepoya University, Mangalore, India
| | - Vinitha Ramanath Pai
- Department of Biochemistry, Yenepoya Medical College, Yenepoya University, Mangalore, India
| | - Ganesh Sanjeev
- Department of Physics, Mangalore University, Mangalore, India
| | | | - Dinesh Upadhya
- Yenepoya Research Centre, Yenepoya University, Mangalore, India.,Department of Anatomy, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576104, India
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Yu H, Aravindan N, Xu J, Natarajan M. Inter- and intra-cellular mechanism of NF-kB-dependent survival advantage and clonal expansion of radio-resistant cancer cells. Cell Signal 2017; 31:105-111. [DOI: 10.1016/j.cellsig.2017.01.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 12/21/2016] [Accepted: 01/04/2017] [Indexed: 11/29/2022]
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D’Auria F, Centurione L, Centurione MA, Angelini A, Di Pietro R. Regulation of Cancer Cell Responsiveness to Ionizing Radiation Treatment by Cyclic AMP Response Element Binding Nuclear Transcription Factor. Front Oncol 2017; 7:76. [PMID: 28529924 PMCID: PMC5418225 DOI: 10.3389/fonc.2017.00076] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 04/07/2017] [Indexed: 02/05/2023] Open
Abstract
Cyclic AMP response element binding (CREB) protein is a member of the CREB/activating transcription factor (ATF) family of transcription factors that play an important role in the cell response to different environmental stimuli leading to proliferation, differentiation, apoptosis, and survival. A number of studies highlight the involvement of CREB in the resistance to ionizing radiation (IR) therapy, demonstrating a relationship between IR-induced CREB family members' activation and cell survival. Consistent with these observations, we have recently demonstrated that CREB and ATF-1 are expressed in leukemia cell lines and that low-dose radiation treatment can trigger CREB activation, leading to survival of erythro-leukemia cells (K562). On the other hand, a number of evidences highlight a proapoptotic role of CREB following IR treatment of cancer cells. Since the development of multiple mechanisms of resistance is one key problem of most malignancies, including those of hematological origin, it is highly desirable to identify biological markers of responsiveness/unresponsiveness useful to follow-up the individual response and to adjust anticancer treatments. Taking into account all these considerations, this mini-review will be focused on the involvement of CREB/ATF family members in response to IR therapy, to deepen our knowledge of this topic, and to pave the way to translation into a therapeutic context.
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Affiliation(s)
- Francesca D’Auria
- Department of Cardiac and Vascular Surgery, Campus Bio-Medico University of Rome, Rome, Italy
- *Correspondence: Francesca D’Auria,
| | - Lucia Centurione
- Department of Medicine and Ageing Sciences, G. d’Annunzio University, Chieti, Italy
| | | | - Antonio Angelini
- Department of Medicine and Ageing Sciences, G. d’Annunzio University, Chieti, Italy
- Ageing Research Center, CeSI, G. d’Annunzio University Foundation, Chieti, Italy
| | - Roberta Di Pietro
- Department of Medicine and Ageing Sciences, G. d’Annunzio University, Chieti, Italy
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McNamara AL, Kam WWY, Scales N, McMahon SJ, Bennett JW, Byrne HL, Schuemann J, Paganetti H, Banati R, Kuncic Z. Dose enhancement effects to the nucleus and mitochondria from gold nanoparticles in the cytosol. Phys Med Biol 2016; 61:5993-6010. [PMID: 27435339 DOI: 10.1088/0031-9155/61/16/5993] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Gold nanoparticles (GNPs) have shown potential as dose enhancers for radiation therapy. Since damage to the genome affects the viability of a cell, it is generally assumed that GNPs have to localise within the cell nucleus. In practice, however, GNPs tend to localise in the cytoplasm yet still appear to have a dose enhancing effect on the cell. Whether this effect can be attributed to stress-induced biological mechanisms or to physical damage to extra-nuclear cellular targets is still unclear. There is however growing evidence to suggest that the cellular response to radiation can also be influenced by indirect processes induced when the nucleus is not directly targeted by radiation. The mitochondrion in particular may be an effective extra-nuclear radiation target given its many important functional roles in the cell. To more accurately predict the physical effect of radiation within different cell organelles, we measured the full chemical composition of a whole human lymphocytic JURKAT cell as well as two separate organelles; the cell nucleus and the mitochondrion. The experimental measurements found that all three biological materials had similar ionisation energies ∼70 eV, substantially lower than that of liquid water ∼78 eV. Monte Carlo simulations for 10-50 keV incident photons showed higher energy deposition and ionisation numbers in the cell and organelle materials compared to liquid water. Adding a 1% mass fraction of gold to each material increased the energy deposition by a factor of ∼1.8 when averaged over all incident photon energies. Simulations of a realistic compartmentalised cell show that the presence of gold in the cytosol increases the energy deposition in the mitochondrial volume more than within the nuclear volume. We find this is due to sub-micron delocalisation of energy by photoelectrons, making the mitochondria a potentially viable indirect radiation target for GNPs that localise to the cytosol.
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Affiliation(s)
- A L McNamara
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, 30 Fruit St, Boston, MA 02114, USA. School of Physics, University of Sydney, NSW 2006, Australia
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Li J, Xu J, Lu Y, Qiu L, Xu W, Lu B, Hu Z, Chu Z, Chai Y, Zhang J. MASM, a Matrine Derivative, Offers Radioprotection by Modulating Lethal Total-Body Irradiation-Induced Multiple Signaling Pathways in Wistar Rats. Molecules 2016; 21:molecules21050649. [PMID: 27196884 PMCID: PMC6273364 DOI: 10.3390/molecules21050649] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 04/25/2016] [Accepted: 05/06/2016] [Indexed: 01/09/2023] Open
Abstract
Matrine is an alkaloid extracted from Sophora flavescens Ait and has many biological activities, such as anti-inflammatory, antitumor, anti-fibrosis, and immunosuppressive properties. In our previous studies, the matrine derivative MASM was synthesized and exhibited potent inhibitory activity against liver fibrosis. In this study, we mainly investigated its protection against lethal total-body irradiation (TBI) in rats. Administration of MASM reduced the radiation sickness characteristics and increased the 30-day survival of rats before or after lethal TBI. Ultrastructural observation illustrated that pretreatment of rats with MASM significantly attenuated the TBI-induced morphological changes in the different organs of irradiated rats. Gene expression profiles revealed that pretreatment with MASM had a dramatic effect on gene expression changes caused by TBI. Pretreatment with MASM prevented differential expression of 53% (765 genes) of 1445 differentially expressed genes induced by TBI. Pathway enrichment analysis indicated that these genes were mainly involved in a total of 21 pathways, such as metabolic pathways, pathways in cancer, and mitogen-activated protein kinase (MAPK) pathways. Our data indicated that pretreatment of rats with MASM modulated these pathways induced by TBI, suggesting that the pretreatment with MASM might provide the protective effects on lethal TBI mainly or partially through the modulation of these pathways, such as multiple MAPK pathways. Therefore, MASM has the potential to be used as an effective therapeutic or radioprotective agent to minimize irradiation damages and in combination with radiotherapy to improve the efficacy of cancer therapy.
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Affiliation(s)
- Jianzhong Li
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Jing Xu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
- Department of Pharmacy, East Hospital, Dongji University, Shanghai 200085, China.
| | - Yiming Lu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Lei Qiu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Weiheng Xu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Bin Lu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Zhenlin Hu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Zhiyong Chu
- The Naval Medical Research Institute, Shanghai 200433, China.
| | - Yifeng Chai
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Junping Zhang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
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Hellweg CE, Spitta LF, Henschenmacher B, Diegeler S, Baumstark-Khan C. Transcription Factors in the Cellular Response to Charged Particle Exposure. Front Oncol 2016; 6:61. [PMID: 27047795 PMCID: PMC4800317 DOI: 10.3389/fonc.2016.00061] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 03/03/2016] [Indexed: 12/23/2022] Open
Abstract
Charged particles, such as carbon ions, bear the promise of a more effective cancer therapy. In human spaceflight, exposure to charged particles represents an important risk factor for chronic and late effects such as cancer. Biological effects elicited by charged particle exposure depend on their characteristics, e.g., on linear energy transfer (LET). For diverse outcomes (cell death, mutation, transformation, and cell-cycle arrest), an LET dependency of the effect size was observed. These outcomes result from activation of a complex network of signaling pathways in the DNA damage response, which result in cell-protective (DNA repair and cell-cycle arrest) or cell-destructive (cell death) reactions. Triggering of these pathways converges among others in the activation of transcription factors, such as p53, nuclear factor κB (NF-κB), activated protein 1 (AP-1), nuclear erythroid-derived 2-related factor 2 (Nrf2), and cAMP responsive element binding protein (CREB). Depending on dose, radiation quality, and tissue, p53 induces apoptosis or cell-cycle arrest. In low LET radiation therapy, p53 mutations are often associated with therapy resistance, while the outcome of carbon ion therapy seems to be independent of the tumor's p53 status. NF-κB is a central transcription factor in the immune system and exhibits pro-survival effects. Both p53 and NF-κB are activated after ionizing radiation exposure in an ataxia telangiectasia mutated (ATM)-dependent manner. The NF-κB activation was shown to strongly depend on charged particles' LET, with a maximal activation in the LET range of 90-300 keV/μm. AP-1 controls proliferation, senescence, differentiation, and apoptosis. Nrf2 can induce cellular antioxidant defense systems, CREB might also be involved in survival responses. The extent of activation of these transcription factors by charged particles and their interaction in the cellular radiation response greatly influences the destiny of the irradiated and also neighboring cells in the bystander effect.
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Affiliation(s)
- Christine E. Hellweg
- Cellular Biodiagnostics, Department of Radiation Biology, Institute of Aerospace Medicine, German Aerospace Centre (DLR), Cologne, Germany
| | - Luis F. Spitta
- Cellular Biodiagnostics, Department of Radiation Biology, Institute of Aerospace Medicine, German Aerospace Centre (DLR), Cologne, Germany
| | - Bernd Henschenmacher
- Cellular Biodiagnostics, Department of Radiation Biology, Institute of Aerospace Medicine, German Aerospace Centre (DLR), Cologne, Germany
| | - Sebastian Diegeler
- Cellular Biodiagnostics, Department of Radiation Biology, Institute of Aerospace Medicine, German Aerospace Centre (DLR), Cologne, Germany
| | - Christa Baumstark-Khan
- Cellular Biodiagnostics, Department of Radiation Biology, Institute of Aerospace Medicine, German Aerospace Centre (DLR), Cologne, Germany
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DI NISIO CHIARA, SANCILIO SILVIA, DI GIACOMO VIVIANA, RAPINO MONICA, SANCILLO LAURA, GENOVESI DOMENICO, DI SIENA ALESSANDRO, RANA ROSAALBA, CATALDI AMELIA, DI PIETRO ROBERTA. Involvement of cyclic-nucleotide response element-binding family members in the radiation response of Ramos B lymphoma cells. Int J Oncol 2016; 48:28-36. [PMID: 26573110 PMCID: PMC4734613 DOI: 10.3892/ijo.2015.3238] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 09/22/2015] [Indexed: 02/05/2023] Open
Abstract
The aim of the present study was to investigate the role of Cyclic-nucleotide Response Element-Binding (CREB) family members and related nuclear transcription factors in the radiation response of human B lymphoma cell lines (Daudi and Ramos). Unlike the more radiosensitive Daudi cells, Ramos cells demonstrated only a moderate increase in early apoptosis after 3-5 Gy irradiation doses, which was detected with Annexin V/PI staining. Moreover, a significant and dose-dependent G2/M phase accumulation was observed in the same cell line at 24 h after both ionizing radiation (IR) doses. Western blot analysis showed an early increase in CREB protein expression that was still present at 3 h and more evident after 3 Gy IR in Ramos cells, along with the dose-dependent upregulation of p53 and NF-κB. These findings were consistent with real-time RT-PCR analysis that showed an early- and dose-dependent upregulation of NFKB1, IKBKB and XIAP gene expression. Unexpectedly, pre-treatment with SN50 did not increase cell death, but cell viability. Taken together, these findings let us hypothesise that the early induction and activation of NF-κB1 in Ramos cells could mediate necrotic cell death and be linked to other molecules belonging to CREB family and involved in the cell cycle regulation.
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Affiliation(s)
- CHIARA DI NISIO
- Department of Pharmacy, G. d'Annunzio University, I-66100 Chieti, Italy
| | - SILVIA SANCILIO
- Department of Pharmacy, G. d'Annunzio University, I-66100 Chieti, Italy
| | | | - MONICA RAPINO
- Molecular Genetics Institute CNR, I-27100 Pavia, Italy
| | - LAURA SANCILLO
- Department of Medicine and Ageing Sciences, G. d'Annunzio University, I-66100 Chieti, Italy
| | - DOMENICO GENOVESI
- Institute of Oncologic Radiotherapy, G. d'Annunzio University, I-66100 Chieti, Italy
| | | | - ROSA ALBA RANA
- Department of Medicine and Ageing Sciences, G. d'Annunzio University, I-66100 Chieti, Italy
| | - AMELIA CATALDI
- Department of Pharmacy, G. d'Annunzio University, I-66100 Chieti, Italy
| | - ROBERTA DI PIETRO
- Department of Medicine and Ageing Sciences, G. d'Annunzio University, I-66100 Chieti, Italy
- Correspondence to: Professor Roberta Di Pietro, Medicine and Ageing Sciences Department, G. d'Annunzio University, Via dei Vestini 31, I-66100 Chieti, Italy, E-mail:
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Lai Y, Yu X, Lin X, He S. Inhibition of mTOR sensitizes breast cancer stem cells to radiation-induced repression of self-renewal through the regulation of MnSOD and Akt. Int J Mol Med 2015; 37:369-77. [PMID: 26707081 PMCID: PMC4716789 DOI: 10.3892/ijmm.2015.2441] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 12/09/2015] [Indexed: 12/13/2022] Open
Abstract
The sensitization of breast cancer stem cells (BrCSCs) to the inhibitive effects of radiotherapy through adjuvant therapy which targets oncogenic pathways represents a prospective strategy for improving the effect of radiation in patients with triple-negative breast cancer (TNBC). Mammalian target of rapamycin (mTOR) activation is one of the most frequent events in human malignancies, and is critical for sustaining the self-renewing ability of cancer stem cells (CSCs); inhibition by rapamycin is an effective and promising strategy in anticancer treatments. In the present study, we found that mTOR activity was closely related to the self-renewal ability of BrCSCs, and in triple negative MDA-MB-453 and MDA-MB-468 cells, rapamycin repression of mTOR phosphorylation decreased the number of mammospheres and helped to sensitize the resistant CSCs to low-dose radiation therapy. By inhibiting mTOR and mitochondrial manganese superoxide dismutase (MnSOD), we confirmed that rapamycin functioned through the mTOR/MnSOD/reactive oxygen species (ROS) signaling pathway, and the existence of Akt governed the rapamycin-induced asymmetric division (AD) of stem cells in cases of radiation-treated breast cancer. The synergic effects of rapamycin and low-dose radiation induced the AD of stem cells, which then resulted in a decrease in the number of mammospheres, and both were mediated by MnSOD. Governed by Akt, the consequent inhibition of ROS formation and oxidative stress preserved the AD mode of stem cells, which is critical for an improved radiotherapy response in clinical treatment, as the tumor group is thus easier to eliminate with radiation therapy. We posit that an in-depth understanding of the interaction of radiation with CSCs has enormous potential and will make radiation even better and more effective.
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Affiliation(s)
- Yuanhui Lai
- Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510700, P.R. China
| | - Xinpei Yu
- Department of Geriatric Infection and Organ Function Support Laboratory, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
| | - Xiaohong Lin
- Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510700, P.R. China
| | - Shanyang He
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510700, P.R. China
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13
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Park SI, Park SJ, Lee J, Kim HE, Park SJ, Sohn JW, Park YG. Inhibition of cyclic AMP response element-directed transcription by decoy oligonucleotides enhances tumor-specific radiosensitivity. Biochem Biophys Res Commun 2015; 469:363-9. [PMID: 26655813 DOI: 10.1016/j.bbrc.2015.11.122] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 11/26/2015] [Indexed: 10/22/2022]
Abstract
The radiation stress induces cytotoxic responses of cell death as well as cytoprotective responses of cell survival. Understanding exact cellular mechanism and signal transduction pathways is important in improving cancer radiotherapy. Increasing evidence suggests that cyclic AMP response element binding protein (CREB)/activating transcription factor (ATF) family proteins act as a survival factor and a signaling molecule in response to stress. We postulated that CREB inhibition via CRE decoy oligonucleotide increases tumor cell sensitization to γ-irradiation-induced cytotoxic stress. In the present study, we demonstrate that CREB phosphorylation and CREB DNA-protein complex formation increased in time- and radiation dose-dependent manners, while there was no significant change in total protein level of CREB. In addition, CREB was phosphorylated in response to γ-irradiation through p38 MAPK pathway. Further investigation revealed that CREB blockade by decoy oligonucleotides functionally inhibited transactivation of CREB, and significantly increased radiosensitivity of multiple human cancer cell lines including TP53- and/or RB-mutated cells with minimal effects on normal cells. We also demonstrate that tumor cells ectopically expressing dominant negative mutant CREB (KCREB) and the cells treated with p38 MAPK inhibitors were more sensitive to γ-irradiation than wild type parental cells or control-treated cells. Taken together, we conclude that CREB protects tumor cells from γ-irradiation, and combination of CREB inhibition plus ionizing radiation will be a promising radiotherapeutic approach.
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Affiliation(s)
- Serk In Park
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea; The BK21 Plus Program for Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea; Department of Medicine and Center for Bone Biology, Vanderbilt University School of Medicine, Nashville, TN, USA.
| | - Sung-Jun Park
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea; Laboratory of Obesity and Aging Research, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Junghan Lee
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Hye Eun Kim
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Su Jin Park
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Jeong-Won Sohn
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Yun Gyu Park
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea.
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14
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Mishra S, Vinayak M. Role of ellagic acid in regulation of apoptosis by modulating novel and atypical PKC in lymphoma bearing mice. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 15:281. [PMID: 26276710 PMCID: PMC4536603 DOI: 10.1186/s12906-015-0810-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 08/07/2015] [Indexed: 12/15/2022]
Abstract
Background Protein kinase C regulates various cellular processes including cell proliferation, cell adhesion, apoptosis, angiogenesis, invasion, and metastasis. Activation of different PKC isozymes results in distinct cellular responses. Novel PKCs are mainly involved in apoptotic process. Atypical PKC subfamily plays a critical role in cell proliferation and apoptosis, cell differentiation and motility. However, Atypical PKCs show contradictory regulation in different tissues or cancer cells. The mechanism of diversified effects is not well explored. Antioxidant ellagic acid shows hepatoprotective, anti-carcinogenic and anti-mutagenic properties. Present study is focused to analyze the effect of ellagic acid on novel and atypical isozymes of PKC in regulation of PKC-mediated apoptosis in liver of lymphoma bearing mice. Implication of ellagic acid treatment to DL mice was analyzed on caspase-3 mediated apoptosis via PKCδ induced activation; and on maintenance of adequate supply of energy during cancer growth. Methods 15–20 weeks old adult DL mice were divided into four groups (n = 6). Group 2, 3, 4 were treated with different doses of ellagic acid (40 mg/kg, 60 mg/kg and 80 mg/kg bw). The mice were sacrificed after 19 days of treatment and liver was used for study. The effect of ellagic acid was determined on expression of novel and atypical PKC isozymes. Apoptotic potentiality of ellagic acid was checked on activities of caspase-3 and PKCδ in terms of their catalytic fragments. Aerobic glycolysis was monitored by LDH activity, especially activity of LDH A. Results Ellagic acid treatment caused up regulation of expression of almost all novel and atypical PKC isozymes. Activities of PKCδ and caspase-3 were enhanced by ellagic acid, however activities of total LDH and LDH-A were inhibited. Conclusion The results show that ellagic acid promotes apoptosis in lymphoma bearing mice via novel and atypical PKCs which involves PKCδ induced caspase-3 activation; and inhibition of glycolytic pathway.
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15
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Li J, Xu J, Xu W, Qi Y, Lu Y, Qiu L, Hu Z, Chu Z, Chai Y, Zhang J. Protective Effects of Hong Shan Capsule against Lethal Total-Body Irradiation-Induced Damage in Wistar Rats. Int J Mol Sci 2015; 16:18938-55. [PMID: 26274957 PMCID: PMC4581280 DOI: 10.3390/ijms160818938] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/29/2015] [Accepted: 07/31/2015] [Indexed: 01/15/2023] Open
Abstract
Hong Shan Capsule (HSC), a crude drug of 11 medicinal herbs, was used in clinical practice for the treatment of radiation injuries in China. In this study, we investigated its protection in rats against acute lethal total-body irradiation (TBI). Pre-administration of HSC reduced the radiation sickness characteristics, while increasing the 30-day survival of the irradiated rats. Administration of HSC also reduced the radiation sickness characteristics and increased the 30-day survival of mice after exposure to lethal TBI. Ultrastructural observation illustrated that the pretreatment of rats with HSC significantly attenuated the TBI-induced morphological changes in the different organs of irradiated rats. Gene expression profiles revealed the dramatic effect of HSC on alterations of gene expression caused by lethal TBI. Pretreatment with HSC prevented differential expression of 66% (1398 genes) of 2126 genes differentially expressed in response to TBI. Pathway enrichment analysis indicated that these genes were mainly involved in a total of 32 pathways, such as pathways in cancer and the mitogen-activated protein kinase (MAPK) signaling pathway. Our analysis indicated that the pretreatment of rats with HSC modulated these pathways induced by lethal TBI, such as multiple MAPK pathways, suggesting that pretreatment with HSC might provide protective effects on lethal TBI mainly or partially through the modulation of these pathways. Our data suggest that HSC has the potential to be used as an effective therapeutic or radio-protective agent to minimize irradiation damage.
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Affiliation(s)
- Jianzhong Li
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Jing Xu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
- Department of Pharmacy, East Hospital, Dongji University, Shanghai 200085, China.
| | - Weiheng Xu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Yang Qi
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Yiming Lu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Lei Qiu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Zhenlin Hu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Zhiyong Chu
- Department of Preventive Medicine, Naval Medical Research Institute, Shanghai 200433, China.
| | - Yifeng Chai
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Junping Zhang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
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16
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Cheng J, Tian L, Ma J, Gong Y, Zhang Z, Chen Z, Xu B, Xiong H, Li C, Huang Q. Dying tumor cells stimulate proliferation of living tumor cells via caspase-dependent protein kinase Cδ activation in pancreatic ductal adenocarcinoma. Mol Oncol 2014; 9:105-14. [PMID: 25156550 DOI: 10.1016/j.molonc.2014.07.024] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 07/30/2014] [Accepted: 07/30/2014] [Indexed: 12/30/2022] Open
Abstract
Pancreatic cancer is one of the most lethal human cancers, and radiotherapy is often implemented for locally advanced pancreatic ductal adenocarcinoma. Tumor cell repopulation is a major challenge in treating cancers after radiotherapy. In order to address the problem of tumor repopulation, our previous studies have demonstrated that dying cells stimulate the proliferation of living tumor cells after radiotherapy. In particular, dying cells undergoing apoptosis also activate survival or proliferation signals and release growth factors to surrounding living cells. In the present study, we used an in vitro model to examine the possible mechanisms for dying cell stimulated tumor repopulation in pancreatic cancer. In this model, a small number of living, luciferase-labeled pancreatic cancer cells (reporter) were seeded onto a layer of a much larger number of irradiated, unlabeled pancreatic cancer cells and the growth of the living cells was measured over time as a gage of tumor repopulation. Our results indicate that irradiated, dying Panc1 feeder cells significantly stimulated the proliferation of living Panc1 reporter cells. Importantly, we identified that the percentage of apoptotic cells and the cleavage of caspases 3 and 7 and protein kinase Cδ (PKCδ) were increased in irradiated Panc1 cells. We presumed that caspases 3 and 7 and PKCδ as integral mediators in the process of dying pancreatic cancer cell stimulation of living tumor cell growth. In order to demonstrate the importance of caspases 3, 7 and PKCδ, we introduced dominant-negative mutants of caspase 3 (DN_C3), caspase 7 (DN_C7), or PKCδ (DN_PKCδ) into Panc1 cells using lentiviral vectors. The stably transduced Panc1 cells were irradiated and used as feeders and we found a significant decrease in the growth of living Panc1 reporter cells when compared with irradiated wild-type Panc1 cells as feeders. Moreover, the role of PKCδ in the growth stimulation of living tumor cells was further confirmed using a pan PKC inhibitor GF109203x and a specific PKCδ inhibitor, rottlerin. Additionally, we found significantly increased phosphorylation of Akt, p38 mitogen-activated protein kinase (MAPK) and c-Jun N-terminal kinase/stress-activated protein kinase (JNK1/2) in the irradiated Panc1 cells. Mechanistically, PKCδ cleavage was attenuated in both DN_C3 and DN_C7 transduced Panc1 cells, and both Akt and p38 MAPK phosphorylation were attenuated in DN_PKCδ transduced Panc1 cells following radiation. Thus, this report suggests a novel finding that cellular signaling caspase 3/7-PKCδ-Akt/p38 MAPK is crucial to the repopulation in Panc1 cells after radiotherapy.
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Affiliation(s)
- Jin Cheng
- The Comprehensive Cancer Center & Shanghai Key Laboratory for Pancreatic Diseases, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201620, China
| | - Ling Tian
- Experimental Research Center, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201620, China
| | - Jingjing Ma
- The Comprehensive Cancer Center & Shanghai Key Laboratory for Pancreatic Diseases, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201620, China
| | - Yanping Gong
- Experimental Research Center, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201620, China
| | - Zhengxiang Zhang
- The Comprehensive Cancer Center & Shanghai Key Laboratory for Pancreatic Diseases, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201620, China
| | - Zhiwei Chen
- The Comprehensive Cancer Center & Shanghai Key Laboratory for Pancreatic Diseases, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201620, China
| | - Bing Xu
- The Comprehensive Cancer Center & Shanghai Key Laboratory for Pancreatic Diseases, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201620, China
| | - Hui Xiong
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center, Shanghai 201203, China
| | - Chuanyuan Li
- The Department of Dermatology, Duke University Medical Center, Durham, NC 27710, USA.
| | - Qian Huang
- The Comprehensive Cancer Center & Shanghai Key Laboratory for Pancreatic Diseases, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201620, China.
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Kam WWY, McNamara AL, Lake V, Banos C, Davies JB, Kuncic Z, Banati RB. Predicted ionisation in mitochondria and observed acute changes in the mitochondrial transcriptome after gamma irradiation: A Monte Carlo simulation and quantitative PCR study. Mitochondrion 2013; 13:736-42. [DOI: 10.1016/j.mito.2013.02.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 01/14/2013] [Accepted: 02/13/2013] [Indexed: 10/27/2022]
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18
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Tang JY, Chang HW, Chang JG. Modulating roles of amiloride in irradiation-induced antiproliferative effects in glioblastoma multiforme cells involving Akt phosphorylation and the alternative splicing of apoptotic genes. DNA Cell Biol 2013; 32:504-10. [PMID: 23822711 DOI: 10.1089/dna.2013.1998] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Apoptosis is a key mechanism for enhanced cellular radiosensitivity in radiation therapy. Studies suggest that Akt signaling may play a role in apoptosis and radioresistance. This study evaluates the possible modulating role of amiloride, an antihypertensive agent with a modulating effect to alternative splicing for regulating apoptosis, in the antiproliferative effects induced by ionizing radiation (IR) in glioblastoma multiforme (GBM) 8401 cells. Analysis of cell viability showed that amiloride treatment significantly inhibited cell proliferation in irradiated GBM8401 cells (p<0.05) in a time-dependent manner, especially in cells treated with amiloride with IR post-treatment. In comparison with GBM8401 cells treated with amiloride alone, with GBM8401 cells treated with IR alone, and with human embryonic lung fibroblast control cells (HEL 299), GBM8401 cells treated with IR combined with amiloride showed increased overexpression of phosphorylated Akt, regardless of whether IR treatment was performed before or after amiloride administration. The alternative splicing pattern of apoptotic protease-activating factor-1 (APAF1) in cells treated with amiloride alone, IR alone, and combined amiloride-IR treatments showed more consistent cell proliferation compared to that in other apoptosis-related genes such as baculoviral IAP repeat containing 5 (BIRC5), Bcl-X, and homeodomain interacting protein kinase-3 (HIPK3). In GBM8401 cells treated with amiloride with IR post-treatment, the ratio of prosurvival (-XL,-LC) to proapoptotic (-LN,-S) splice variants of APAF1 was lower than that seen in cells treated with amiloride with IR pretreatment, suggesting that proapoptotic splice variants of APAF1 (APAF1-LN,-S) were higher in the glioblastoma cells treated with amiloride with IR post-treatment, as compared to glioblastoma cells and fibroblast control cells that had received other treatments. Together, these results suggest that amiloride modulates cell radiosensitivity involving the Akt phosphorylation and the alternative splicing of APAF1, especially for the cells treated with amiloride with IR post-treatment. Therefore, amiloride may improve the effectiveness of radiation therapy for GBMs.
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Affiliation(s)
- Jen-Yang Tang
- Department of Radiation Oncology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Kumazoe M, Sugihara K, Tsukamoto S, Huang Y, Tsurudome Y, Suzuki T, Suemasu Y, Ueda N, Yamashita S, Kim Y, Yamada K, Tachibana H. 67-kDa laminin receptor increases cGMP to induce cancer-selective apoptosis. J Clin Invest 2013; 123:787-99. [PMID: 23348740 DOI: 10.1172/jci64768] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 11/01/2012] [Indexed: 12/16/2022] Open
Abstract
The 67-kDa laminin receptor (67LR) is a laminin-binding protein overexpressed in various types of cancer, including bile duct carcinoma, colorectal carcinoma, cervical cancer, and breast carcinoma. 67LR plays a vital role in growth and metastasis of tumor cells and resistance to chemotherapy. Here, we show that 67LR functions as a cancer-specific death receptor. In this cell death receptor pathway, cGMP initiated cancer-specific cell death by activating the PKCδ/acid sphingomyelinase (PKCδ/ASM) pathway. Furthermore, upregulation of cGMP was a rate-determining process of 67LR-dependent cell death induced by the green tea polyphenol (-)-epigallocatechin-3-O-gallate (EGCG), a natural ligand of 67LR. We found that phosphodiesterase 5 (PDE5), a negative regulator of cGMP, was abnormally expressed in multiple cancers and attenuated 67LR-mediated cell death. Vardenafil, a PDE5 inhibitor that is used to treat erectile dysfunction, significantly potentiated the EGCG-activated 67LR-dependent apoptosis without affecting normal cells and prolonged the survival time in a mouse xenograft model. These results suggest that PDE5 inhibitors could be used to elevate cGMP levels to induce 67LR-mediated, cancer-specific cell death.
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Affiliation(s)
- Motofumi Kumazoe
- Division of Applied Biological Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
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Ahmadianpour MR, Abdolmaleki P, Mowla SJ, Hosseinkhani S. Gamma radiation alters cell cycle and induces apoptosis in p53 mutant E6.1 Jurkat cells. Appl Radiat Isot 2013; 71:29-33. [DOI: 10.1016/j.apradiso.2012.09.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 08/05/2012] [Accepted: 09/07/2012] [Indexed: 01/09/2023]
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21
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Viñas G, Puig T, Porta R. [Oxidative stress in patients with cancer: two sides of the same coin]. Med Clin (Barc) 2012; 139:171-5. [PMID: 22266084 DOI: 10.1016/j.medcli.2011.11.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 11/07/2011] [Accepted: 11/17/2011] [Indexed: 11/16/2022]
Abstract
Oxidative stress is a biochemical condition of imbalance between free radicals and antioxidant defence mechanisms. Cancer is an inducing oxidative stress disease. Metabolic changes in neoplastic cells, tumor infiltration by inflammatory cells, malnutrition and specific cancer treatment contribute to high levels of oxidative stress in cancer patients. The toxic effects of oxidative stress on normal cells could be counteracted by use of antioxidants, even though they may abrogate the harmful effects of oxidative stress on tumor cells and prevent apoptosis. Thus, currently, there is not enough scientific evidence to support the use of antioxidants in patients with cancer.
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Affiliation(s)
- Gemma Viñas
- Servicio de Oncología Médica, Instituto Catalán de Oncología, Girona, España
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22
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Zara S, Rapino M, Sozio P, Di Stefano A, Nasuti C, Cataldi A. Ibuprofen and lipoic acid codrug 1 control Alzheimer's disease progression by down-regulating protein kinase C ε-mediated metalloproteinase 2 and 9 levels in β-amyloid infused Alzheimer's disease rat model. Brain Res 2011; 1412:79-87. [DOI: 10.1016/j.brainres.2011.07.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 04/21/2011] [Accepted: 07/10/2011] [Indexed: 11/29/2022]
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