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Yan X, Yao C, Fang C, Han M, Gong C, Hu D, Shen W, Wang L, Li S, Zhu S. Rocaglamide promotes the infiltration and antitumor immunity of NK cells by activating cGAS-STING signaling in non-small cell lung cancer. Int J Biol Sci 2022; 18:585-598. [PMID: 35002511 PMCID: PMC8741839 DOI: 10.7150/ijbs.65019] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 11/28/2021] [Indexed: 12/20/2022] Open
Abstract
Background: Natural killer (NK) cell-based immunotherapy is clinically limited due to insufficient tumor infiltration in solid tumors. We have previously found that the natural product rocaglamide (RocA) can enhance NK cell-mediated killing of non-small cell lung cancer (NSCLC) cells by inhibiting autophagy, and autophagic inhibition has been shown to increase NK cell tumor infiltration in melanoma. Therefore, we hypothesized that RocA could increase NK cell infiltration in NSCLC by autophagy inhibition. Methods: Flow cytometry, RNA-sequencing, real-time PCR, Western blotting analysis, and xenograft tumor model were utilized to assess the infiltration of NK cells and the underlying mechanism. Results: RocA significantly increased the infiltration of NK cells and the expressions of CCL5 and CXCL10 in NSCLC cells, which could not be reversed by the inhibitions of autophagy/ULK1, JNK and NF-κB. However, such up-regulation could be suppressed by the inhibitions of TKB1 and STING. Furthermore, RocA dramatically activated the cGAS (cyclic GMP-AMP synthase)-STING (stimulator of interferon genes) signaling pathway, and the inhibition/depletion of STING ablated the up-regulation of CCL5 and CXCL10, NK cell infiltration, and tumor regression induced by RocA. Besides, RocA damaged mitochondrial DNA (mtDNA) and promoted the cytoplasmic release of mtDNA. The mPTP inhibitor cyclosporin A could reverse RocA-induced cytoplasmic release of mtDNA. Conclusions: RocA could promote NK cell infiltration by activating cGAS-STING signaling via targeting mtDNA, but not by inhibiting autophagy. Taken together, our current findings suggested that RocA was a potent cGAS-STING agonist and had a promising potential in cancer immunotherapy, especially in NK cell-based immunotherapy.
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Affiliation(s)
- Xuewei Yan
- Center for Traditional Chinese Medicine and Immunology Research; School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China.,Department of Immunology and Pathogenic Biology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China
| | - Chao Yao
- Center for Traditional Chinese Medicine and Immunology Research; School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China.,Department of Immunology and Pathogenic Biology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China
| | - Cheng Fang
- Center for Traditional Chinese Medicine and Immunology Research; School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China.,Department of Immunology and Pathogenic Biology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China
| | - Min Han
- Center for Traditional Chinese Medicine and Immunology Research; School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China
| | - Chenyuan Gong
- Center for Traditional Chinese Medicine and Immunology Research; School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China
| | - Dan Hu
- School of Acupuncture, Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China
| | - Weiming Shen
- Center for Traditional Chinese Medicine and Immunology Research; School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China.,Department of Immunology and Pathogenic Biology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China
| | - Lixin Wang
- Center for Traditional Chinese Medicine and Immunology Research; School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China.,Department of Immunology and Pathogenic Biology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China
| | - Suyun Li
- Department of Pathology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China
| | - Shiguo Zhu
- Center for Traditional Chinese Medicine and Immunology Research; School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China.,Department of Immunology and Pathogenic Biology, School of Basic Medical Sciences, Shanghai University of Traditional Chinese Medicine, 1200 Cai Lun Rd. Shanghai 201203, P. R. China
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2
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Sridharan S, Robeson M, Bastihalli-Tukaramrao D, Howard CM, Subramaniyan B, Tilley AMC, Tiwari AK, Raman D. Targeting of the Eukaryotic Translation Initiation Factor 4A Against Breast Cancer Stemness. Front Oncol 2019; 9:1311. [PMID: 31867270 PMCID: PMC6909344 DOI: 10.3389/fonc.2019.01311] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 11/11/2019] [Indexed: 12/14/2022] Open
Abstract
Breast cancer stem cells (BCSCs) are intrinsically chemoresistant and capable of self-renewal. Following chemotherapy, patients can develop minimal residual disease due to BCSCs which can repopulate into a relapsed tumor. Therefore, it is imperative to co-target BCSCs along with the bulk tumor cells to achieve therapeutic success and prevent recurrence. So, it is vital to identify actionable molecular targets against both BCSCs and bulk tumor cells. Previous findings from our lab and others have demonstrated that inhibition of the emerging drug target eIF4A with Rocaglamide A (RocA) was efficacious against triple-negative breast cancer cells (TNBC). RocA specifically targets the pool of eIF4A bound to the oncogenic mRNAs that requires its helicase activity for their translation. This property enables specific targeting of tumor cells. The efficacy of RocA against BCSCs is unknown. In this study, we postulated that eIF4A could be a vulnerable node in BCSCs. In order to test this, we generated a paclitaxel-resistant TNBC cell line which demonstrated an elevated level of eIF4A along with increased levels of cancer stemness markers (ALDH activity and CD44), pluripotency transcription factors (SOX2, OCT4, and NANOG) and drug transporters (ABCB1, ABCG2, and ABCC1). Furthermore, genetic ablation of eIF4A resulted in reduced expression of ALDH1A1, pluripotency transcription factors and drug transporters. This pointed out that eIF4A is likely associated with selected set of proteins that are critical to BCSCs, and hence targeting eIF4A may eliminate BCSCs. Therefore, we isolated BCSCs from two TNBC cell lines: MDA-Bone-Un and SUM-159PT. Following RocA treatment, the self-renewal ability of the BCSCs was significantly reduced as determined by the efficiency of the formation of primary and secondary mammospheres. This was accompanied by a reduction in the levels of NANOG, OCT4, and drug transporters. Exposure to RocA also induced cell death of the BCSCs as evaluated by DRAQ7 and cell viability assays. RocA treatment induced apoptosis with increased levels of cleaved caspase-3. Overall, we identified that RocA is effective in targeting BCSCs, and eIF4A is an actionable molecular target in both BCSCs and bulk tumor cells. Therefore, anti-eIF4A inhibitors could potentially be combined synergistically with existing chemo-, radio- and/or immunotherapies.
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Affiliation(s)
- Sangita Sridharan
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, OH, United States
| | - Megan Robeson
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, OH, United States
| | - Diwakar Bastihalli-Tukaramrao
- Department of Pharmacology & Experimental Therapeutics, University of Toledo Health Science Campus, Toledo, OH, United States
| | - Cory M. Howard
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, OH, United States
| | - Boopathi Subramaniyan
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, OH, United States
| | - Augustus M. C. Tilley
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, OH, United States
| | - Amit K. Tiwari
- Department of Pharmacology & Experimental Therapeutics, University of Toledo Health Science Campus, Toledo, OH, United States
| | - Dayanidhi Raman
- Department of Cancer Biology, University of Toledo Health Science Campus, Toledo, OH, United States
- *Correspondence: Dayanidhi Raman
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3
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Nalli AD, Brown LE, Thomas CL, Sayers TJ, Porco JA, Henrich CJ. Sensitization of renal carcinoma cells to TRAIL-induced apoptosis by rocaglamide and analogs. Sci Rep 2018; 8:17519. [PMID: 30504817 PMCID: PMC6269514 DOI: 10.1038/s41598-018-35908-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 11/07/2018] [Indexed: 01/07/2023] Open
Abstract
Rocaglamide has been reported to sensitize several cell types to TRAIL-induced apoptosis. In recent years, advances in synthetic techniques have led to generation of novel rocaglamide analogs. However, these have not been extensively analyzed as TRAIL sensitizers, particularly in TRAIL-resistant renal cell carcinoma cells. Evaluation of rocaglamide and analogs identified 29 compounds that are able to sensitize TRAIL-resistant ACHN cells to TRAIL-induced, caspase-dependent apoptosis with sub-µM potency which correlated with their potency as protein synthesis inhibitors and with loss of cFLIP protein in the same cells. Rocaglamide alone induced cell cycle arrest, but not apoptosis. Rocaglates averaged 4–5-fold higher potency as TRAIL sensitizers than as protein synthesis inhibitors suggesting a potential window for maximizing TRAIL sensitization while minimizing effects of general protein synthesis inhibition. A wide range of other rocaglate effects (e.g. on JNK or RAF-MEK-ERK signaling, death receptor levels, ROS, ER stress, eIF4E phosphorylation) were assessed, but did not contribute to TRAIL sensitization. Other than a rapid loss of MCL-1, rocaglates had minimal effects on mitochondrial apoptotic pathway proteins. The identification of structurally diverse/mechanistically similar TRAIL sensitizing rocaglates provides insights into both rocaglate structure and function and potential further development for use in RCC-directed combination therapy.
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Affiliation(s)
- Ancy D Nalli
- National Cancer Institute, Molecular Targets Program, Frederick, MD, 21702, USA
| | - Lauren E Brown
- Boston University, Center for Molecular Discovery (BU-CMD), Department of Chemistry, Boston, MA, 02215, USA.
| | - Cheryl L Thomas
- National Cancer Institute, Molecular Targets Program, Frederick, MD, 21702, USA
| | - Thomas J Sayers
- National Cancer Institute, Cancer Inflammation Program, Frederick, MD, 21702, USA.,Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, 21702, USA
| | - John A Porco
- Boston University, Center for Molecular Discovery (BU-CMD), Department of Chemistry, Boston, MA, 02215, USA.
| | - Curtis J Henrich
- National Cancer Institute, Molecular Targets Program, Frederick, MD, 21702, USA. .,Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, 21702, USA.
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4
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Lin H, Wang Y, Lai H, Li X, Chen T. Iron(II)-Polypyridyl Complexes Inhibit the Growth of Glioblastoma Tumor and Enhance TRAIL-Induced Cell Apoptosis. Chem Asian J 2018; 13:2730-2738. [PMID: 29963768 DOI: 10.1002/asia.201800862] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/26/2018] [Indexed: 12/14/2022]
Abstract
A promising cancer-targeting agent for the induction of apoptosis in tumor necrosis factor (TNF) proteins, the TNF-related apoptosis-inducing ligand (TRAIL) ligand, has found limited applications in the treatment of cancer cells, owing to its resistance by cancer cell lines. Therefore, the rational design of anticancer agents that could sensitize cancer cells towards TRAIL is of great significance. Herein, we report that synthetic iron(II)-polypyridyl complexes are capable of inhibiting the proliferation of glioblastoma cancer cells and efficiently enhancing TRAIL-induced cell apoptosis. Mechanistic studies demonstrated that the synthesized complexes induced cancer-cell apoptosis through triggering the activation of p38 and p53 and inhibiting the activation of ERK. Moreover, uPA and MMP-2/MMP-9, among the most important metastatic regulatory proteins, were also found to be significantly alerted after the treatment. Furthermore, we also found that tumor growth in nude mice was significantly inhibited by iron complex Fe2 through the induction of apoptosis without clear systematic toxicity, as indicated by histological analysis. Taken together, this study provides evidence for the further development of metal-based anticancer agents and chemosensitizers of TRAIL for the treatment of human glioblastoma cancer cells.
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Affiliation(s)
- Hao Lin
- The First Affiliated Hospital, and, Department of Chemistry, Jinan University, Guangzhou, 510632, P. R. China
| | - Yifan Wang
- The First Affiliated Hospital, and, Department of Chemistry, Jinan University, Guangzhou, 510632, P. R. China
| | - Haoqiang Lai
- The First Affiliated Hospital, and, Department of Chemistry, Jinan University, Guangzhou, 510632, P. R. China
| | - Xiaoling Li
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou, 510632, P. R. China
| | - Tianfeng Chen
- The First Affiliated Hospital, and, Department of Chemistry, Jinan University, Guangzhou, 510632, P. R. China
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5
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Down‐regulation of intracellular anti‐apoptotic proteins, particularly c‐FLIP by therapeutic agents; the novel view to overcome resistance to TRAIL. J Cell Physiol 2018; 233:6470-6485. [DOI: 10.1002/jcp.26585] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/08/2018] [Indexed: 12/24/2022]
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6
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Naimi A, Movassaghpour AA, Hagh MF, Talebi M, Entezari A, Jadidi-Niaragh F, Solali S. TNF-related apoptosis-inducing ligand (TRAIL) as the potential therapeutic target in hematological malignancies. Biomed Pharmacother 2018; 98:566-576. [DOI: 10.1016/j.biopha.2017.12.082] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 11/27/2017] [Accepted: 12/18/2017] [Indexed: 02/08/2023] Open
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7
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Beyer K, Partecke LI, Roetz F, Fluhr H, Weiss FU, Heidecke CD, von Bernstorff W. LPS promotes resistance to TRAIL-induced apoptosis in pancreatic cancer. Infect Agent Cancer 2017; 12:30. [PMID: 28572836 PMCID: PMC5450120 DOI: 10.1186/s13027-017-0139-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Accepted: 05/16/2017] [Indexed: 12/29/2022] Open
Abstract
Background Though TRAIL has been hailed as a promising drug for tumour treatment, it has been observed that many tumour cells have developed escape mechanisms against TRAIL-induced apoptosis. As a receptor of LPS, TLR 4, which is expressed on a variety of cancer cells, can be associated with TRAIL-resistance of tumour cells and tumour progression as well as with the generation of an anti-tumour immune response. Methods In this study, the sensitivity to TRAIL-induced apoptosis as well as the influence of LPS-co-stimulation on the cell viability of the pancreatic cancer cell lines PANC-1, BxPC-3 and COLO 357 was examined by FACS analyses and a cell viability assay. Subsequently, the expression of TRAIL-receptors was detected via FACS analyses. Levels of osteoprotegerin (OPG) were also determined using an enzyme-linked immunosorbent assay. Results PANC-1 cells were shown to be resistant to TRAIL-induced apoptosis. This was accompanied by significantly increased osteoprotegerin levels and a significantly decreased expression of DR4. In contrast, TRAIL significantly induced apoptosis in COLO 357 cells and to a lesser degree in BxPC-3 cells. Co-stimulation of COLO 357 as well as BxPC-3 cells combining TRAIL and LPS resulted in a significant decrease in TRAIL-induced apoptosis. In COLO 357 cells TRAIL-stimulation decreased the levels of OPG thereby not altering the expression of the TRAIL-receptors 1–4 resulting in a high susceptibility to TRAIL-induced apoptosis. Co-stimulation with LPS and TRAIL completely reversed the effect of TRAIL on OPG levels reaching a 2-fold increase beyond the level of non-stimulated cells resulting in a lower susceptibility to apoptosis. In BxPC-3, TRAIL stimulation decreased the expression of DR4 and significantly increased the decoy receptors TRAIL-R3 and TRAIL-R4 leading to a decrease in TRAIL-induced apoptosis. OPG levels remained unchanged. Co-stimulation with TRAIL and LPS further enhanced the changes in TRAIL-receptor-expression promoting apoptosis resistance. Conclusions Here it has been shown that TRAIL-resistance in pancreatic cancer cells can be mediated by the inflammatory molecule LPS as well as by different expression patterns of functional and non-functional TRAIL-receptors.
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Affiliation(s)
- Katharina Beyer
- Department of General, Visceral, Thoracic and Vascular Surgery, Universitätsmedizin Greifswald, Greifswald, Germany.,Department of General, Visceral and Vascular Surgery, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Lars Ivo Partecke
- Department of General, Visceral, Thoracic and Vascular Surgery, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Felicitas Roetz
- Department of General, Visceral, Thoracic and Vascular Surgery, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Herbert Fluhr
- Department of Medicine A, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Frank Ulrich Weiss
- Department of Obstetrics and Gynaecology, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Claus-Dieter Heidecke
- Department of General, Visceral, Thoracic and Vascular Surgery, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Wolfram von Bernstorff
- Department of General, Visceral, Thoracic and Vascular Surgery, Universitätsmedizin Greifswald, Greifswald, Germany
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8
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Wu Y, Giaisi M, Köhler R, Chen WM, Krammer PH, Li-Weber M. Rocaglamide breaks TRAIL-resistance in human multiple myeloma and acute T-cell leukemia in vivo in a mouse xenogtraft model. Cancer Lett 2016; 389:70-77. [PMID: 27998762 DOI: 10.1016/j.canlet.2016.12.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 12/01/2016] [Accepted: 12/09/2016] [Indexed: 11/26/2022]
Abstract
Multiple myeloma (MM) is an incurable malignancy by the presently known therapies. TRAIL is a promising anticancer agent that virtually not shows any toxicity to normal cells. We have recently carried out clinical trials with a human circularly permuted TRAIL, CPT, against MM saw a partial response in approximate 20-30% of patients. In the current study, we investigated the cause of CPT resistance and revealed that the majority of the MM patients express elevated levels of c-FLIP. Knockdown of c-FLIP expression by siRNA alone was sufficient to increase CPT-mediated apoptosis in a CPT-resistant human MM cell line U266. To overcome CPT resistance, we investigated the combination of CPT with Rocaglamides(s) in MM which has been shown to inhibit c-FLIP expression in vitro. We show that Rocaglamide(s) overcomes CPT resistance in U266 in vitro and significant increases in anti-tumor efficacies of CPT in mice xenografted with U266. Similar results were also obtained in mice xenografted with the CPT-resistant human acute T-cell leukemia cell line Molt-4. Our study suggests that the combination of Rocaglamide(s) with CPT may provide a more efficient treatment against myeloma and leukemia.
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Affiliation(s)
- Yin Wu
- Department of Hematology, Beijing Chao-Yang Hospital, Capital Medical University, 8 Gongren Tiyuchang Nanlu, Chaoyang District, Beijing 100020, China
| | - Marco Giaisi
- Tumorimmunology Program (D030), German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany
| | - Rebecca Köhler
- Tumorimmunology Program (D030), German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany
| | - Wen-Ming Chen
- Department of Hematology, Beijing Chao-Yang Hospital, Capital Medical University, 8 Gongren Tiyuchang Nanlu, Chaoyang District, Beijing 100020, China
| | - Peter H Krammer
- Tumorimmunology Program (D030), German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany
| | - Min Li-Weber
- Tumorimmunology Program (D030), German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany.
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Abstract
The prognosis of patients with classical Hodgkin lymphoma following chemo- and radiotherapy has been excellent during the last 4 decades. However, the development of secondary malignancies is of major concern. Therefore, the reduction of radiotherapy application is a major objective of ongoing clinical trials. De-escalation of treatment may increase the risk of relapses and thus may lead to reappearance of prognostic factors. Prognostic biomarkers might help to identify patients who are at increased risk of relapse. This review summarizes the current knowledge about potential prognostic biomarkers for patients with classical Hodgkin lymphoma.
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Affiliation(s)
- Martin S Staege
- a Department of Pediatrics , Martin Luther University Halle-Wittenberg , Halle , Germany
| | - Stefanie Kewitz
- a Department of Pediatrics , Martin Luther University Halle-Wittenberg , Halle , Germany
| | - Toralf Bernig
- a Department of Pediatrics , Martin Luther University Halle-Wittenberg , Halle , Germany
| | - Caspar Kühnöl
- a Department of Pediatrics , Martin Luther University Halle-Wittenberg , Halle , Germany
| | - Christine Mauz-Körholz
- a Department of Pediatrics , Martin Luther University Halle-Wittenberg , Halle , Germany
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10
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Huang Y, Yang X, Xu T, Kong Q, Zhang Y, Shen Y, Wei Y, Wang G, Chang KJ. Overcoming resistance to TRAIL-induced apoptosis in solid tumor cells by simultaneously targeting death receptors, c-FLIP and IAPs. Int J Oncol 2016; 49:153-63. [PMID: 27210546 PMCID: PMC4902065 DOI: 10.3892/ijo.2016.3525] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 04/15/2016] [Indexed: 12/12/2022] Open
Abstract
The discovery of the TRAIL protein and its death receptors DR4/5 changed the horizon of cancer research because TRAIL specifically kills cancer cells. However, the validity of TRAIL-based cancer therapies has yet to be established, as most cancer cells are TRAIL-resistant. In this report, we demonstrate that TRAIL-resistance of many cancer cell lines can be overcome after siRNA- or rocaglamide-mediated downregulation of c-FLIP expression and simultaneous inhibition of IAPs activity using AT406, a pan-antagonist of IAPs. Combined triple actions of the TRAIL, the IAPs inhibitor, AT406, and the c-FLIP expression inhibitor, rocaglamide (ART), markedly improve TRAIL-induced apoptotic effects in most solid cancer cell lines through the activation of an extrinsic apoptosis pathway. Furthermore, this ART combination does not harm normal cells. Among the 18 TRAIL-resistant cancer cell lines used, 15 cell lines become sensitive or highly sensitive to ART, and two out of three glioma cell lines exhibit high resistance to ART treatment due to very low levels of procaspase-8. This study provides a rationale for the development of TRAIL-induced apoptosis-based cancer therapies.
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Affiliation(s)
- Ying Huang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Xiang Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Tianrui Xu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Qinghong Kong
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Yaping Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Yuehai Shen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Yunlin Wei
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Guanlin Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
| | - Kwen-Jen Chang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, P.R. China
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TRAIL Promotes Tumor Growth in a Syngeneic Murine Orthotopic Pancreatic Cancer Model and Affects the Host Immune Response. Pancreas 2016; 45:401-8. [PMID: 26390425 DOI: 10.1097/mpa.0000000000000469] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) is currently being evaluated as a possible biological agent for cancer treatment. However, many tumor cells are resistant to TRAIL-induced apoptosis. In these cases, TRAIL may activate different pathways promoting tumor growth as well as showing different interactions with the immunological tumor microenvironment. In this study, the impact of TRAIL on tumor growth and survival in a syngeneic model of TRAIL-resistant pancreatic cancer cells was investigated. METHODS Murine 6606PDA pancreatic cancer cells were injected into the pancreatic heads of TRAIL mice and their littermates. To examine a direct effect of TRAIL on tumor cells, cultures of 6606PDA were TRAIL stimulated. RESULTS The TRAIL mice displayed significantly decreased tumor volumes and an enhanced overall survival in pancreatic cancer. The decreased tumor growth in TRAIL mice was accompanied by a decrease of regulatory CD4 cells within tumors. Concordantly, TRAIL treatment of wild-type mice enhanced tumor growth and increased the fraction of regulatory CD4 cells. Yet, a direct effect of TRAIL on 6606PDA cells was not detected. CONCLUSIONS Thus, TRAIL can promote tumor growth in TRAIL-resistant tumor cells. This may restrict possible future clinical applications of TRAIL in pancreatic cancer.
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12
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Abstract
Human eukaryotic prohibitin (prohibitin-1 and prohibitin-2) is a membrane protein with different cellular localizations. It is involved in multiple cellular functions, including energy metabolism, proliferation, apoptosis, and senescence. The subcellular localization of prohibitin may determine its functions. Membrane prohibitin regulate the cellular signaling of membrane transport, nuclear prohibitin control transcription activation and the cell cycle, and mitochondrial prohibitin complex stabilize the mitochondrial genome and modulate mitochondrial dynamics, mitochondrial morphology, mitochondrial biogenesis, and the mitochondrial intrinsic apoptotic pathway. Moreover, prohibitin can translocates into the nucleus or the mitochondria under apoptotic signals and the subcellular shuttling of prohibitin is necessary for apoptosis process. Apoptosis is the process of programmed cell death that is important for the maintenance of normal physiological functions. Consequently, any alteration in the content, post-transcriptional modification (i.e. phosphorylation) or the nuclear or mitochondrial translocation of prohibitin may influence cell fate. Understanding the mechanisms of the expression and regulation of prohibitin may be useful for future research. This review provides an overview of the multifaceted and essential roles played by prohibitin in the regulation of cell survival and apoptosis.
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Affiliation(s)
- Ya-Ting Peng
- Department of Respiratory Medicine, Respiratory Disease Research Institute, Second XiangYa Hospital of Central South University, Changsha, 410011, People's Republic of China
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13
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Chu J, Cencic R, Wang W, Porco JA, Pelletier J. Translation Inhibition by Rocaglates Is Independent of eIF4E Phosphorylation Status. Mol Cancer Ther 2015; 15:136-41. [PMID: 26586722 DOI: 10.1158/1535-7163.mct-15-0409] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 10/29/2015] [Indexed: 02/06/2023]
Abstract
Rocaglates are natural products that inhibit protein synthesis in eukaryotes and exhibit antineoplastic activity. In vitro biochemical assays, affinity chromatography experiments coupled with mass spectrometry analysis, and in vivo genetic screens have identified eukaryotic initiation factor (eIF) 4A as a direct molecular target of rocaglates. eIF4A is the RNA helicase subunit of eIF4F, a complex that mediates cap-dependent ribosome recruitment to mRNA templates. The eIF4F complex has been implicated in tumor initiation and maintenance through elevated levels or increased phosphorylation status of its cap-binding subunit, eIF4E, thus furthering the interest toward developing rocaglates as antineoplastic agents. Recent experiments have indicated that rocaglates also interact with prohibitins 1 and 2, proteins implicated in c-Raf-MEK-ERK signaling. Because increased ERK signaling stimulates eIF4E phosphorylation status, rocaglates are also expected to inhibit eIF4E phosphorylation status, a point that has not been thoroughly investigated. It is currently unknown whether the effects on translation observed with rocaglates are solely through eIF4A inhibition or also a feature of blocking eIF4E phosphorylation. Here, we show that rocaglates inhibit translation through an eIF4E phosphorylation-independent mechanism.
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Affiliation(s)
- Jennifer Chu
- Department of Biochemistry, McGill University, Montreal, Québec, Canada
| | - Regina Cencic
- Department of Biochemistry, McGill University, Montreal, Québec, Canada
| | - Wenyu Wang
- Department of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, Boston, Massachusetts
| | - John A Porco
- Department of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, Boston, Massachusetts
| | - Jerry Pelletier
- Department of Biochemistry, McGill University, Montreal, Québec, Canada. The Rosalind and Morris Goodman Cancer Research Center, McGill University, Montreal, Québec, Canada. Department of Oncology, McGill University, Montreal, Québec, Canada.
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14
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Luan Z, He Y, He F, Chen Z. Rocaglamide overcomes tumor necrosis factor-related apoptosis-inducing ligand resistance in hepatocellular carcinoma cells by attenuating the inhibition of caspase-8 through cellular FLICE-like-inhibitory protein downregulation. Mol Med Rep 2014; 11:203-11. [PMID: 25333816 PMCID: PMC4237083 DOI: 10.3892/mmr.2014.2718] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 09/04/2014] [Indexed: 12/18/2022] Open
Abstract
The enhancement of apoptosis is a therapeutic strategy used in the treatment of cancer. Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a promising antitumor agent. However, hepatocellular carcinoma (HCC) cells exhibit marked resistance to the induction of cell death by TRAIL. The present study investigated whether rocaglamide, a naturally occurring product isolated from the genus Aglaia, is able to sensitize resistant HCC cells to TRAIL-mediated apoptosis. Two HCC cell lines, HepG2 and Huh-7, were treated with rocaglamide and/or TRAIL and the induction of apoptosis and effects on the TRAIL signaling pathway were investigated. The in vivo efficacy of rocaglamide was determined in TRAIL-resistant Huh-7-derived tumor xenografts. Rocaglamide significantly sensitized the TRAIL-resistant HCC cells to apoptosis by TRAIL, which resulted from the rocaglamide-mediated downregulation of cellular FLICE-like inhibitory protein and subsequent caspase-8 activation. Furthermore, rocaglamide markedly inhibited tumor growth from Huh-7 cells propagated in severe combined immunodeficient mice, suggesting that chemosentization also occurred in vivo. These data suggest that rocaglamide acted synergistically with TRAIL against the TRAIL-resistant HCC cells. Thus, it is concluded that rocaglamide as an adjuvant to TRAIL-based therapy may present a promising therapeutic approach for the treatment of HCC.
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Affiliation(s)
- Zhou Luan
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Ying He
- Department of Ophthalmology, The Central Hospital of Wuhan, Wuhan, Hubei 430014, P.R. China
| | - Fan He
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Zhishui Chen
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
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15
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Polier G, Giaisi M, Köhler R, Müller WW, Lutz C, Buss EC, Krammer PH, Li-Weber M. Targeting CDK9 by wogonin and related natural flavones potentiates the anti-cancer efficacy of the Bcl-2 family inhibitor ABT-263. Int J Cancer 2014; 136:688-98. [PMID: 24895203 DOI: 10.1002/ijc.29009] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 05/26/2014] [Indexed: 12/19/2022]
Abstract
Tumor initiation, progression and resistance to therapies are tightly associated with over-expression of anti-apoptotic proteins Bcl-2, Bcl-x(L), Bcl-w and Mcl-1. ABT-263 (Navitoclax), an orally bio-available small-molecule mimetic of the Bcl-2 homology domain 3, inhibits Bcl-2, Bcl-x(L), and Bcl-w and has shown anti-cancer effects mainly on lymphomas and lymphocytic leukemia. Despite promising results obtained from the clinical trials, the use of ABT-263 in patients is dose-limited due to causing thrombocytopenia via inhibition of Bcl-x(L) in platelets. ABT-199 specifically inhibits Bcl-2; however, its use is limited to tumors over-expressing only Bcl-2. Besides, many tumors resist treatment due to high levels of Mcl-1 expression or develop resistance via up-regulation of Mcl-1 during long-term exposure. These obstacles highlight the demand to improve the ABT-263-based therapy. In this study, we show that anti-cancer flavones, e.g., wogonin, baicalein, apigenin, chrysin and luteolin enhance ABT-263-induced apoptosis in different cancer cell lines and in primary AML and ALL cells by down-regulation of Mcl-1 expression. Importantly, wogonin does not enhance the toxicity of ABT-263 to proliferating normal T cells and thrombocytes. Wogonin also potentiates the lethality of ABT-263 in cancer cells which have acquired resistance to ABT-263. Furthermore, we show that combination of wogonin with ABT-263 promotes in vivo tumor regression in a human T-cell leukemia xenograft mouse model. Our study demonstrates that wogonin (and related flavones) reduce the effective dose of ABT-263 thereby possibly decreasing the risk of adverse side effects.
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Affiliation(s)
- Gernot Polier
- Tumorimmunology Program (D030), German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany
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16
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Li-Weber M. Molecular mechanisms and anti-cancer aspects of the medicinal phytochemicals rocaglamides (=flavaglines). Int J Cancer 2014; 137:1791-9. [PMID: 24895251 DOI: 10.1002/ijc.29013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 05/29/2014] [Accepted: 06/02/2014] [Indexed: 01/08/2023]
Abstract
Rocaglamides (= flavaglines) are potent natural anti-cancer phytochemicals that inhibit cancer growth at nanomolar concentrations by the following mechanisms: (1) inhibition of translation initiation via inhibition of phosphorylation of the mRNA cap-binding eukaryotic translation initiation factor eIF4E and stabilization of RNA-binding of the translation initiation factor eIF4A in the eIF4F complex; (2) blocking cell cycle progression by activation of the ATM/ATR-Chk1/Chk2 checkpoint pathway; (3) inactivation of the heat shock factor 1 (HSF1) leading to up-regulation of thioredoxin-interacting protein (TXNIP) and consequent reduction of glucose uptake and (4) induction of apoptosis through activation of the MAPK p38 and JNK and inhibition of the Ras-CRaf-MEK-ERK signaling pathway. Besides the anti-cancer activities, rocaglamides are also shown to protect primary cells from chemotherapy-induced cell death and alleviate inflammation- and drug-induced injury in neuronal tissues. This review will focus on the recently discovered molecular mechanisms of the actions of rocaglamides and highlights the benefits of using rocaglamides in cancer treatment.
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Affiliation(s)
- Min Li-Weber
- Tumorimmunology Program (D030), German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany
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17
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Ribeiro N, Thuaud F, Bernard Y, Gaiddon C, Cresteil T, Hild A, Hirsch EC, Michel PP, Nebigil CG, Désaubry L. Flavaglines as Potent Anticancer and Cytoprotective Agents. J Med Chem 2012; 55:10064-73. [DOI: 10.1021/jm301201z] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Nigel Ribeiro
- Therapeutic Innovation Laboratory,
UMR7200, CNRS/Université de Strasbourg, Illkirch, France
| | - Frédéric Thuaud
- Therapeutic Innovation Laboratory,
UMR7200, CNRS/Université de Strasbourg, Illkirch, France
| | - Yohann Bernard
- Biotechnology and Cell Signaling
Laboratory, UMR 7242, CNRS/Université de Strasbourg, Illkirch,
France
| | - Christian Gaiddon
- Molecular Signaling and Neurodegeneration,
UMRS692, INSERM/Université de Strasbourg, France
| | - Thierry Cresteil
- Institut de Chimie des Substances
Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France
| | - Audrey Hild
- Université Pierre et
Marie Curie-Paris 6, CR-ICM, UMR-S975, Paris, France
- INSERM, UMR 975, Paris, France
- CNRS, UMR 7225, Paris, France
| | - Etienne C. Hirsch
- Université Pierre et
Marie Curie-Paris 6, CR-ICM, UMR-S975, Paris, France
- INSERM, UMR 975, Paris, France
- CNRS, UMR 7225, Paris, France
| | - Patrick Pierre Michel
- Université Pierre et
Marie Curie-Paris 6, CR-ICM, UMR-S975, Paris, France
- INSERM, UMR 975, Paris, France
- CNRS, UMR 7225, Paris, France
| | - Canan G. Nebigil
- Biotechnology and Cell Signaling
Laboratory, UMR 7242, CNRS/Université de Strasbourg, Illkirch,
France
| | - Laurent Désaubry
- Therapeutic Innovation Laboratory,
UMR7200, CNRS/Université de Strasbourg, Illkirch, France
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18
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The Natural Anticancer Compounds Rocaglamides Inhibit the Raf-MEK-ERK Pathway by Targeting Prohibitin 1 and 2. ACTA ACUST UNITED AC 2012; 19:1093-104. [DOI: 10.1016/j.chembiol.2012.07.012] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Revised: 06/12/2012] [Accepted: 07/10/2012] [Indexed: 12/19/2022]
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19
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Alinari L, Prince CJ, Edwards RB, Towns WH, Mani R, Lehman A, Zhang X, Jarjoura D, Pan L, Kinghorn AD, Grever MR, Baiocchi RA, Lucas DM. Dual targeting of the cyclin/Rb/E2F and mitochondrial pathways in mantle cell lymphoma with the translation inhibitor silvestrol. Clin Cancer Res 2012; 18:4600-11. [PMID: 22791882 DOI: 10.1158/1078-0432.ccr-12-0839] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE During cell-cycle progression, D-cyclins activate cyclin-dependent kinases (CDKs) 4/6 to inactivate Rb, permitting E2F1-mediated S-phase gene transcription. This critical pathway is typically deregulated in cancer, and novel inhibitory strategies would be effective in a variety of tumors. The protein synthesis inhibitor silvestrol has potent activity in B-cell leukemias via the mitochondrial pathway of apoptosis, and also reduces cyclin D1 expression in breast cancer and lymphoma cell lines. We hypothesized that this dual activity of silvestrol would make it especially effective in malignancies driven by aberrant cyclin D1 expression. EXPERIMENTAL DESIGN Mantle cell lymphoma (MCL), characterized by elevated cyclin D1, was used as a model to test this approach. The cyclin D/Rb/E2F1 pathway was investigated in vitro using MCL cell lines and primary tumor cells. Silvestrol was also evaluated in vivo using an aggressive model of MCL. RESULTS Silvestrol showed low nanomolar potency both in MCL cell lines and primary MCL tumor cells. D-cyclins were depleted with just 10 nmol/L silvestrol at 16 hours, with subsequent reductions of phosphorylated Rb, E2F1 protein, and E2F1 target transcription. As showed in other leukemias, silvestrol caused Mcl-1 depletion followed by mitochondrial depolarization and caspase-dependent apoptosis, effects not related to inhibition of CDK4/6. Silvestrol significantly (P < 0.0001) prolonged survival in a MCL xenograft model without detectable toxicity. CONCLUSIONS These data indicate that silvestrol effectively targets the cyclin/CDK/Rb pathway, and additionally induces cytotoxicity via intrinsic apoptosis. This dual activity may be an effective therapeutic strategy in MCL and other malignancies.
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Affiliation(s)
- Lapo Alinari
- Department of Internal Medicine, College of Medicine, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
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