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Wang D, Jia H, Cao H, Hou X, Wang Q, Lin J, Liu J, Yang L, Liu J. A Dual-Channel Ca 2+ Nanomodulator Induces Intracellular Ca 2+ Disorders via Endogenous Ca 2+ Redistribution for Tumor Radiosensitization. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2401222. [PMID: 38690593 DOI: 10.1002/adma.202401222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/21/2024] [Indexed: 05/02/2024]
Abstract
Tumor cells harness Ca2+ to maintain cellular homeostasis and withstand external stresses from various treatments. Here, a dual-channel Ca2+ nanomodulator (CAP-P-NO) is constructed that can induce irreversible intracellular Ca2+ disorders via the redistribution of tumor-inherent Ca2+ for disrupting cellular homeostasis and thus improving tumor radiosensitivity. Stimulated by tumor-overexpressed acid and glutathione, capsaicin and nitric oxide are successively escaped from CAP-P-NO to activate the transient receptor potential cation channel subfamily V member 1 and the ryanodine receptor for the influx of extracellular Ca2+ and the release of Ca2+ in the endoplasmic reticulum, respectively. The overwhelming level of Ca2+ in tumor cells not only impairs the function of organelles but also induces widespread changes in the gene transcriptome, including the downregulation of a set of radioresistance-associated genes. Combining CAP-P-NO treatment with radiotherapy achieves a significant suppression against both pancreatic and patient-derived hepatic tumors with negligible side effects. Together, the study provides a feasible approach for inducing tumor-specific intracellular Ca2+ overload via endogenous Ca2+ redistribution and demonstrates the great potential of Ca2+ disorder therapy in enhancing the sensitivity for tumor radiotherapy.
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Affiliation(s)
- Dianyu Wang
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, P. R. China
| | - Haixue Jia
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, P. R. China
| | - Hongmei Cao
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, P. R. China
| | - Xiaoxue Hou
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, P. R. China
| | - Qian Wang
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, P. R. China
| | - Jia Lin
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, P. R. China
| | - Jinjian Liu
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, P. R. China
| | - Lijun Yang
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, P. R. China
| | - Jianfeng Liu
- State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, P. R. China
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Lv W, Liu H, Zheng Q, Niu H. LINC02535 + miR-30a-5p combination enhances proliferation and inhibits apoptosis in metastatic breast Cancer cells. Toxicol In Vitro 2024; 98:105845. [PMID: 38754600 DOI: 10.1016/j.tiv.2024.105845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 05/11/2024] [Indexed: 05/18/2024]
Abstract
Current clinical therapies for metastatic breast cancer (MBC) have limited therapeutic efficacy and induce significant systemic side effects, leading to poor patient compliance. To address this challenge, this investigation focuses on the design of LINC02535 + miR-30a-5p for treating breast cancer. In vitro cytotoxicity studies confirmed that LINC02535 + miR-30a-5p was more effective in 4 T1 cells, with reduced toxicity in NIH3T3 cells. Further verification of cellular morphology was achieved through various biochemical staining methods. Additionally, the antimetastatic attributes of LINC02535 + miR-30a-5p have been evaluated using both migration scratch and Transwell migration assays, which have collectively revealed excellent antimetastatic potential. The DNA fragmentation of the 4 T1 cells was assessed using a comet assay. LINC02535 + miR-30a-5p improved ROS levels and caused mitochondrial membrane potential alterations and DNA damage, which resulted in apoptosis. Therefore, we propose that LINC02535 + miR-30a-5p could be an alternative therapeutic strategy for breast cancer therapy.
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Affiliation(s)
- Wei Lv
- Department of General Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong 250021, China
| | - Hui Liu
- Department of Breast and Thyroid Surgery, Central Hospital Affiliated to Shandong First Medical University, Jinan 250013, Shandong, China
| | - Qi Zheng
- Department of Gynecological Ward, Central Hospital Affiliated to Shandong First Medical University, Jinan 250013, Shandong, China
| | - Hu Niu
- Department of Breast and Thyroid Surgery, Central Hospital Affiliated to Shandong First Medical University, Jinan 250013, Shandong, China..
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Li X, Zhong W, Jiang H, Wang P, Chai M, Zhu T, Liu J, Huang C, Yang S, Mou D, Zhou X, Cai Y. Endoplasmic reticulum stress is attenuated by glycolysis in lymphatic malformations. Pediatr Res 2024:10.1038/s41390-024-03181-9. [PMID: 38710942 DOI: 10.1038/s41390-024-03181-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 01/11/2024] [Accepted: 03/01/2024] [Indexed: 05/08/2024]
Abstract
BACKGROUND This study aims to investigate the role of endoplasmic reticulum stress (ER stress) in human dermal lymphatic endothelial cells (HDLECs) and lymphatic malformations (LMs) and its relationship with aerobic glycolysis and inflammation. METHODS The proliferation and apoptosis of HDLECs were examined with lipopolysaccharide (LPS) treatment. ER stress-associated proteins and glycolysis-related markers were detected by western blot. Glycolysis indexes were detected by seahorse analysis and lactic acid production assay kits. Immunohistochemistry was used to reveal the ER stress state of lymphatic endothelial cells (LECs) in LMs. RESULTS LPS induced ER stress in HDLECs but did not trigger detectable apoptosis. Intriguingly, LPS-treated HDLECs also showed increased glycolysis flux. Knockdown of Hexokinase 2, a key enzyme for aerobic glycolysis, significantly inhibited the ability of HDLECs to resist ER stress-induced apoptosis. Moreover, compared to normal skin, glucose-regulated protein 78 (GRP78/BIP), and phosphorylation protein kinase R-like kinase (p-PERK), two key ER stress-associated markers, were upregulated in LECs of LMs, which was correlated with the inflected state. In addition, excessively activated ER stress inhibited the progression of LMs in rat models. CONCLUSIONS These data indicate that glycolysis could rescue activated ER stress in HDLECs, which is required for the accelerated development of LMs. IMPACT Inflammation enhances both ER stress and glycolysis in LECs while glycolysis is required to attenuate the pro-apoptotic effect of ER stress. Endoplasmic reticulum (ER) stress is activated in lymphatic endothelial cells (LECs) of LMs, especially in inflammatory condition. The expression of ER stress-related proteins is increased in LMs and correlated with Hexokinase 2 expression. Pharmacological activation of ER stress suppresses the formation of LM lesions in the rat model. ER stress may be a promising and effective therapeutic target for the treatment of LMs.
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Affiliation(s)
- Xuecong Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral & Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Wenqun Zhong
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral & Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Hao Jiang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral & Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Peipei Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral & Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Maosheng Chai
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral & Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Tianshuang Zhu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral & Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Jingjing Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral & Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Congfa Huang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral & Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Shaodong Yang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Pathology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | | | | | - Yu Cai
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
- Department of Oral & Maxillofacial Surgery, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
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Sun X, Wu L, Du L, Xu W, Han M. Targeting the organelle for radiosensitization in cancer radiotherapy. Asian J Pharm Sci 2024; 19:100903. [PMID: 38590796 PMCID: PMC10999375 DOI: 10.1016/j.ajps.2024.100903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/29/2023] [Accepted: 01/16/2024] [Indexed: 04/10/2024] Open
Abstract
Radiotherapy is a well-established cytotoxic therapy for local solid cancers, utilizing high-energy ionizing radiation to destroy cancer cells. However, this method has several limitations, including low radiation energy deposition, severe damage to surrounding normal cells, and high tumor resistance to radiation. Among various radiotherapy methods, boron neutron capture therapy (BNCT) has emerged as a principal approach to improve the therapeutic ratio of malignancies and reduce lethality to surrounding normal tissue, but it remains deficient in terms of insufficient boron accumulation as well as short retention time, which limits the curative effect. Recently, a series of radiosensitizers that can selectively accumulate in specific organelles of cancer cells have been developed to precisely target radiotherapy, thereby reducing side effects of normal tissue damage, overcoming radioresistance, and improving radiosensitivity. In this review, we mainly focus on the field of nanomedicine-based cancer radiotherapy and discuss the organelle-targeted radiosensitizers, specifically including nucleus, mitochondria, endoplasmic reticulum and lysosomes. Furthermore, the organelle-targeted boron carriers used in BNCT are particularly presented. Through demonstrating recent developments in organelle-targeted radiosensitization, we hope to provide insight into the design of organelle-targeted radiosensitizers for clinical cancer treatment.
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Affiliation(s)
- Xiaoyan Sun
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University, Hangzhou 310058, China
| | - Linjie Wu
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University, Hangzhou 310058, China
| | - Lina Du
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Wenhong Xu
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Intervention, The Second Afliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Min Han
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
- Department of Radiation Oncology, Key Laboratory of Cancer Prevention and Intervention, The Second Afliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310058, China
- Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China
- Jinhua Institute of Zhejiang University, Jinhua 321299, China
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University, Hangzhou 310058, China
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Wan S, Li KP, Wang CY, Yang JW, Chen SY, Wang HB, Li XR, Yang L. Immunologic Crosstalk of Endoplasmic Reticulum Stress Signaling in Bladder Cancer. Curr Cancer Drug Targets 2024; 24:701-719. [PMID: 38265406 DOI: 10.2174/0115680096272663231121100515] [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: 08/07/2023] [Revised: 10/19/2023] [Accepted: 11/02/2023] [Indexed: 01/25/2024]
Abstract
Bladder cancer (BC) is a common malignant tumor of the urinary system. While current approaches involving adjuvant chemotherapy, radiotherapy, and immunotherapy have shown significant progress in BC treatment, challenges, such as recurrence and drug resistance, persist, especially in the case of muscle-invasive bladder cancer (MIBC). It is mainly due to the lack of pre-existing immune response cells in the tumor immune microenvironment. Micro-environmental changes (such as hypoxia and under-nutrition) can cause the aggregation of unfolded and misfolded proteins in the lumen, which induces endoplasmic reticulum (ER) stress. ER stress and its downstream signaling pathways are closely related to immunogenicity and tumor drug resistance. ER stress plays a pivotal role in a spectrum of processes within immune cells and the progression of BC cells, encompassing cell proliferation, autophagy, apoptosis, and resistance to therapies. Recent studies have increasingly recognized the potential of natural compounds to exhibit anti-BC properties through ER stress induction. Still, the efficacy of these natural compounds remains less than that of immune checkpoint inhibitors (ICIs). Currently, the ER stress-mediated immunogenic cell death (ICD) pathway is more encouraging, which can enhance ICI responses by mediating immune stemness. This article provides an overview of the recent developments in understanding how ER stress influences tumor immunity and its implications for BC. Targeting this pathway may soon emerge as a compelling therapeutic strategy for BC.
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Affiliation(s)
- Shun Wan
- Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730000, PR China
- Gansu Province Clinical Research Center for Urology, Lanzhou, 730000, PR China
| | - Kun-Peng Li
- Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730000, PR China
- Gansu Province Clinical Research Center for Urology, Lanzhou, 730000, PR China
| | - Chen-Yang Wang
- Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730000, PR China
- Gansu Province Clinical Research Center for Urology, Lanzhou730000, PR China
| | - Jian-Wei Yang
- Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730000, PR China
| | - Si-Yu Chen
- Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730000, PR China
- Gansu Province Clinical Research Center for Urology, Lanzhou, 730000, PR China
| | - Hua-Bin Wang
- Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730000, PR China
- Gansu Province Clinical Research Center for Urology, Lanzhou, 730000, PR China
| | - Xiao-Ran Li
- Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730000, PR China
- Gansu Province Clinical Research Center for Urology, Lanzhou, 730000, PR China
| | - Li Yang
- Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730000, PR China
- Gansu Province Clinical Research Center for Urology, Lanzhou, 730000, PR China
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Radiotherapy Side Effects: Comprehensive Proteomic Study Unraveled Neural Stem Cell Degenerative Differentiation upon Ionizing Radiation. Biomolecules 2022; 12:biom12121759. [PMID: 36551187 PMCID: PMC9775306 DOI: 10.3390/biom12121759] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 11/29/2022] Open
Abstract
Cranial radiation therapy is one of the most effective treatments for childhood brain cancers. Despite the ameliorated survival rate of juvenile patients, radiation exposure-induced brain neurogenic region injury could markedly impair patients' cognitive functions and even their quality of life. Determining the mechanism underlying neural stem cells (NSCs) response to irradiation stress is a crucial therapeutic strategy for cognitive impairment. The present study demonstrated that X-ray irradiation arrested NSCs' cell cycle and impacted cell differentiation. To further characterize irradiation-induced molecular alterations in NSCs, two-dimensional high-resolution mass spectrometry-based quantitative proteomics analyses were conducted to explore the mechanism underlying ionizing radiation's influence on stem cell differentiation. We observed that ionizing radiation suppressed intracellular protein transport, neuron projection development, etc., particularly in differentiated cells. Redox proteomics was performed for the quantification of cysteine thiol modifications in order to profile the oxidation-reduction status of proteins in stem cells that underwent ionizing radiation treatment. Via conjoint screening of protein expression abundance and redox status datasets, several significantly expressed and oxidized proteins were identified in differentiating NSCs subjected to X-ray irradiation. Among these proteins, succinate dehydrogenase [ubiquinone] flavoprotein subunit, mitochondrial (sdha) and the acyl carrier protein, mitochondrial (Ndufab1) were highly related to neurodegenerative diseases such as Parkinson's disease, Alzheimer's disease, and Huntington's disease, illustrating the dual-character of NSCs in cell differentiation: following exposure to ionizing radiation, the normal differentiation of NSCs was compromised, and the upregulated oxidized proteins implied a degenerative differentiation trajectory. These findings could be integrated into research on neurodegenerative diseases and future preventive strategies.
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Roy A, Bera S, Saso L, Dwarakanath BS. Role of autophagy in tumor response to radiation: Implications for improving radiotherapy. Front Oncol 2022; 12:957373. [PMID: 36172166 PMCID: PMC9510974 DOI: 10.3389/fonc.2022.957373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/15/2022] [Indexed: 11/13/2022] Open
Abstract
Autophagy is an evolutionary conserved, lysosome-involved cellular process that facilitates the recycling of damaged macromolecules, cellular structures, and organelles, thereby generating precursors for macromolecular biosynthesis through the salvage pathway. It plays an important role in mediating biological responses toward various stress, including those caused by ionizing radiation at the cellular, tissue, and systemic levels thereby implying an instrumental role in shaping the tumor responses to radiotherapy. While a successful execution of autophagy appears to facilitate cell survival, abortive or interruptions in the completion of autophagy drive cell death in a context-dependent manner. Pre-clinical studies establishing its ubiquitous role in cells and tissues, and the systemic response to focal irradiation of tumors have prompted the initiation of clinical trials using pharmacologic modifiers of autophagy for enhancing the efficacy of radiotherapy. However, the outcome from the Phase I/II trials in many human malignancies has so far been equivocal. Such observations have not only precluded the advancement of these autophagy modifiers in the Phase III trial but have also raised concerns regarding their introduction as an adjuvant to radiotherapy. This warrants a thorough understanding of the biology of the cancer cells, including its spatio-temporal context, as well as its microenvironment all of which might be the crucial factors that determine the success of an autophagy modifier as an anticancer agent. This review captures the current understanding of the interplay between radiation induced autophagy and the biological responses to radiation damage as well as provides insight into the potentials and limitations of targeting autophagy for improving the radiotherapy of tumors.
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Affiliation(s)
- Amrita Roy
- Department of Biotechnology, Indian Academy Degree College (Autonomous), Bengaluru, Karnataka, India
- *Correspondence: Amrita Roy, ; ; Soumen Bera, ; ; Bilikere S. Dwarakanath, ;
| | - Soumen Bera
- B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, India
- Department of Pathology, University of Illinois at Chicago, Chicago, IL, United States
- *Correspondence: Amrita Roy, ; ; Soumen Bera, ; ; Bilikere S. Dwarakanath, ;
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University, Rome, Italy
| | - Bilikere S. Dwarakanath
- Central Research Facility, Sri Ramachandra Institute of Higher Education and Research Institute, Chennai, India
- *Correspondence: Amrita Roy, ; ; Soumen Bera, ; ; Bilikere S. Dwarakanath, ;
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Endoplasmic Reticulum Stress-Related Four-Biomarker Risk Classifier for Survival Evaluation in Esophageal Cancer. JOURNAL OF ONCOLOGY 2022; 2022:5860671. [PMID: 35342421 PMCID: PMC8956413 DOI: 10.1155/2022/5860671] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/27/2022] [Accepted: 03/02/2022] [Indexed: 12/03/2022]
Abstract
Purpose Esophageal cancer (EC) is a lethal digestive tumor worldwide with a dismal clinical outcome. Endoplasmic reticulum (ER) stress poses essential implications for a variety of tumor malignant behaviors. Here, we set up an ER stress-based risk classifier for assessing patient outcome and exploiting robust targets for medical decision-making of EC cases. Methods 340 EC cases with transcriptome and survival data from two independent public datasets (TCGA and GEO) were recruited for this project. Cox regression analyses were employed to create a risk classifier based on ER stress-related genes (ERGs) which were strongly linked to EC cases' outcomes. Then, we detected and confirmed the predictive ability of our proposed classifier via a host of statistical methods, including survival analysis and ROC method. In addition, immune-associated algorithm was implemented to analyze the immune activity of EC samples. Results Four EGRs (BCAP31, HSPD1, PDHA1, and UBE2D1) were selected to build an EGR-related classifier (ERC). This classifier could distinguish the patients into different risky subgroups. The remarkable differences in patient outcome between the two groups were observed, and similar results were also confirmed in GEO cohort. In terms of the immune analysis, the ERC could forecast the infiltration level of immunocytes, such as Tregs and NK cells. Conclusion We created a four-ERG risk classifier which displays the powerful capability of survival evaluation for EC cases.
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Ouellette MM, Zhou S, Yan Y. Cell Signaling Pathways That Promote Radioresistance of Cancer Cells. Diagnostics (Basel) 2022; 12:diagnostics12030656. [PMID: 35328212 PMCID: PMC8947583 DOI: 10.3390/diagnostics12030656] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/26/2022] [Accepted: 03/02/2022] [Indexed: 12/20/2022] Open
Abstract
Radiation therapy (RT) is a standard treatment for solid tumors and about 50% of patients with cancer, including pediatric cancer, receive RT. While RT has significantly improved the overall survival and quality of life of cancer patients, its efficacy has still been markedly limited by radioresistance in a significant number of cancer patients (intrinsic or acquired), resulting in failure of the RT control of the disease. Radiation eradicates cancer cells mainly by causing DNA damage. However, radiation also concomitantly activates multiple prosurvival signaling pathways, which include those mediated by ATM, ATR, AKT, ERK, and NF-κB that promote DNA damage checkpoint activation/DNA repair, autophagy induction, and/or inhibition of apoptosis. Furthermore, emerging data support the role of YAP signaling in promoting the intrinsic radioresistance of cancer cells, which occurs through its activation of the transcription of many essential genes that support cell survival, DNA repair, proliferation, and the stemness of cancer stem cells. Together, these signaling pathways protect cancer cells by reducing the magnitude of radiation-induced cytotoxicity and promoting radioresistance. Thus, targeting these prosurvival signaling pathways could potentially improve the radiosensitivity of cancer cells. In this review, we summarize the contribution of these pathways to the radioresistance of cancer cells.
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Affiliation(s)
- Michel M. Ouellette
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Sumin Zhou
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Ying Yan
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE 68198, USA;
- Correspondence:
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Pan Y, Tang W, Fan W, Zhang J, Chen X. Development of nanotechnology-mediated precision radiotherapy for anti-metastasis and radioprotection. Chem Soc Rev 2022; 51:9759-9830. [DOI: 10.1039/d1cs01145f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Radiotherapy (RT), including external beam RT and internal radiation therapy, uses high-energy ionizing radiation to kill tumor cells.
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Affiliation(s)
- Yuanbo Pan
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou, 310009, Zhejiang, China
- Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, 310009, China
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and College of Design and Engineering, National University of Singapore, Singapore 119074, Singapore
| | - Wei Tang
- Departments of Pharmacy and Diagnostic Radiology, Nanomedicine Translational Research Program, Faculty of Science and Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117544, Singapore
| | - Wenpei Fan
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing, 210009, China
| | - Jianmin Zhang
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou, 310009, Zhejiang, China
- Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, 310009, China
| | - Xiaoyuan Chen
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and College of Design and Engineering, National University of Singapore, Singapore 119074, Singapore
- Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
- Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
- Institute of Molecular and Cell Biology, Agency for Science, Technology, and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore, 138673, Singapore
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Wan D, Sun T, Qi L, Huang D. WITHDRAWN: Precise engineering of Iguratimod and Rapamycin drugs loaded polymeric nanomaterials for the treatment of glioma cancer cells. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Talukdar S, Das SK, Emdad L, Fisher PB. Autophagy and senescence: Insights from normal and cancer stem cells. Adv Cancer Res 2021; 150:147-208. [PMID: 33858596 DOI: 10.1016/bs.acr.2021.01.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Autophagy is a fundamental cellular process, which allows cells to adapt to metabolic stress through the degradation and recycling of intracellular components to generate macromolecular precursors and produce energy. Autophagy is also critical in maintaining cellular/tissue homeostasis, as well preserving immunity and preventing human disease. Deregulation of autophagic processes is associated with cancer, neurodegeneration, muscle and heart disease, infectious diseases and aging. Research on a variety of stem cell types establish that autophagy plays critical roles in normal and cancer stem cell quiescence, activation, differentiation, and self-renewal. Considering its critical function in regulating the metabolic state of stem cells, autophagy plays a dual role in the regulation of normal and cancer stem cell senescence, and cellular responses to various therapeutic strategies. The relationships between autophagy, senescence, dormancy and apoptosis frequently focus on responses to various forms of stress. These are interrelated processes that profoundly affect normal and abnormal human physiology that require further elucidation in cancer stem cells. This review provides a current perspective on autophagy and senescence in both normal and cancer stem cells.
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Affiliation(s)
- Sarmistha Talukdar
- Department of Human and Molecular Genetics, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Institute of Molecular Medicine, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States
| | - Swadesh K Das
- Department of Human and Molecular Genetics, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Institute of Molecular Medicine, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Massey Cancer Center, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States
| | - Luni Emdad
- Department of Human and Molecular Genetics, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Institute of Molecular Medicine, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Massey Cancer Center, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States
| | - Paul B Fisher
- Department of Human and Molecular Genetics, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Institute of Molecular Medicine, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Massey Cancer Center, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States.
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13
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Liu Y, Ma Y, Peng X, Wang L, Li H, Cheng W, Zheng X. Cetuximab-conjugated perfluorohexane/gold nanoparticles for low intensity focused ultrasound diagnosis ablation of thyroid cancer treatment. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2021; 21:856-866. [PMID: 33551680 PMCID: PMC7850351 DOI: 10.1080/14686996.2020.1855064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We report the formulation of nanoassemblies (NAs) comprising C225 conjugates Au-PFH-NAs (C-Au-PFH-NAs) for low-intensity focused ultrasound diagnosis ablation of thyroid cancer. C-Au-PFH-NAs showed excellent stability in water, phosphate-buffered saline (PBS), and 20% rat serum. Transmission electron microscopy (TEM) images also revealed the effective construction of C-Au-PFH-NAs as common spherical assemblies. The incubation of C625 thyroid carcinoma with C-Au-PFH-NAs triggers apoptosis, as confirmed by flow cytometry analysis. The C-Au-PFH-NAs exhibited antitumour efficacy in human thyroid carcinoma xenografts, where histopathological results further confirmed these outcomes. Furthermore, we were able to use low-intensity focused ultrasound diagnosis imaging (LIFUS) to examine the efficiency of C-Au-PFH-NAs in thyroid carcinoma in vivo. These findings clearly show that the use of LIFUS agents with high-performance imaging in different therapeutic settings will have extensive potential for future biomedical applications.
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Affiliation(s)
- Ying Liu
- Department of Ultrasound, Harbin Medical University Cancer Hospital, P.R. China
| | - Yue Ma
- Department of Ultrasound, Harbin Medical University Cancer Hospital, P.R. China
| | - Xiaoshan Peng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, P.R. China
| | - Lingling Wang
- Department of Ultrasound, Harbin Medical University Cancer Hospital, P.R. China
| | - Haixia Li
- Department of Ultrasound, Harbin Medical University Cancer Hospital, P.R. China
| | - Wen Cheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, P.R. China
| | - Xiulan Zheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, P.R. China
- CONTACT Xiulan Zheng No.150, Haping Road, Harbin150081, P.R. China
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14
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Fang W, Jin R, Mu W. Near-infrared mediated polymer-coated carbon nanodots loaded cisplatin for targeted care management of lung cancer therapy. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.08.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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15
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Hu YJ, Zhong JT, Gong L, Zhang SC, Zhou SH. Autophagy-Related Beclin 1 and Head and Neck Cancers. Onco Targets Ther 2020; 13:6213-6227. [PMID: 32669852 PMCID: PMC7335767 DOI: 10.2147/ott.s256072] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/10/2020] [Indexed: 12/11/2022] Open
Abstract
Beclin 1, a positive regulator of autophagy, behaves as a double-edged sword in tumorigenesis. Beclin 1 contributes to tumor suppression by removing defective or damaged organelles and other cellular components; however, its activity can also stimulate cancer initiation and progression. In head and neck cancer, Beclin 1 overexpression promotes autophagy, which limits DNA damage and chromosomal instability and increases necrosis and inflammation by impacting apoptotic and autophagic pathways. This paper reviews the relationship between Beclin 1, carcinogenesis and head and neck cancer prognosis.
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Affiliation(s)
- Yang-Jie Hu
- Department of Otolaryngology, The Affiliated Cixi Hospital of Wenzhou Medical University, Cixi 315300, Zhejiang, People's Republic of China.,Department of Otolaryngology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, People's Republic of China
| | - Jiang-Tao Zhong
- Department of Otolaryngology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, People's Republic of China
| | - Liang Gong
- Department of Otolaryngology, The Affiliated Cixi Hospital of Wenzhou Medical University, Cixi 315300, Zhejiang, People's Republic of China
| | - Si-Cong Zhang
- Department of Otolaryngology, The Affiliated Cixi Hospital of Wenzhou Medical University, Cixi 315300, Zhejiang, People's Republic of China
| | - Shui-Hong Zhou
- Department of Otolaryngology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, People's Republic of China
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16
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Yu T, Tong L, Ao Y, Zhang G, Liu Y, Zhang H. NIR triggered PLGA coated Au-TiO 2 core loaded CPT-11 nanoparticles for human papillary thyroid carcinoma therapy. Drug Deliv 2020; 27:855-863. [PMID: 32515668 PMCID: PMC8216437 DOI: 10.1080/10717544.2020.1775723] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
MDR (multi-drug resistance) is one of the significant deterrents of effective chemotherapy for malignant growth. One of the powerful ways to deal with defeat of the MDR is to utilize inorganic nanoparticle-intervened tranquilize conveyance to build the medication aggregations in cancerous growth cells. In this work, we have developed the presentation that is accurately made of medication conveyance framework dependent on the TiO2 nanoparticles stacked CPT-11 to defeat the thyroid malignancy cells. The synthesized nanoparticles are characterized by spectroscopy methods (UV–vis, XPS, SEM, TEM, and DLS). The TEM results suggested that the shape of PLGA-Au-TiO2@CPT-11 of nanoparticles is ∼250 nm. After successful synthesis, we have evaluated the MTT of PLGA-Au-TiO2@CPT-11 nanoparticles with and without NIR radiations. Further, the morphological changes were observed using various biochemical stainings, such as acridine orange and ethidium bromide (AO–EB) and nuclear staining through Hoechst-33258. Also, migration and cell invasion were examined. The results show that these PLGA-Au-TiO2@CPT-11 and PLGA-Au-TiO2@CPT-11 + NIR nanoparticles exhibited promising antimetastatic property and reduced the cell invasion activity in B-CPAP and FTC-133 thyroid cancer cell lines. Based on the above findings, these PLGA-Au-TiO2@CPT-11 and PLGA-Au-TiO2@CPT-11 + NIR nanoparticles can be used as a promising candidate for the malignant thyroid cells.
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Affiliation(s)
- Tianyu Yu
- Department of Thyroid Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Lingling Tong
- Department of Obstetrics and Gynecology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Yu Ao
- Department of Pediatrics, The First Hospital of Jilin University, Changchun, China
| | - Genmao Zhang
- Department of Ultrasonography, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Yunpeng Liu
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, China
| | - Hejia Zhang
- Department of Ultrasonography, China-Japan Union Hospital of Jilin University, Changchun, China
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17
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Zhang X, Wang L, Wu X, Cong C. Synthesis of SiO 2@Cu 2-xSe nanospheres for efficient near-infrared radiation mediated treatment and care of gastric cancer patients. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2020; 206:111849. [PMID: 32182512 DOI: 10.1016/j.jphotobiol.2020.111849] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 02/07/2023]
Abstract
Rational design and fabrication of suitable optical absorbing agents (OAAs) are of great significance for state-of-the-art photothermal cancer therapy. Copper selenides have recently emerged as a type of promising photothermal operators thanks to their engineered effortlessness, high carrier concentration, and superior photothermal transformation. Nevertheless, the further in vivo applications are hampered owing to their poor biocompatibility and hydrophobicity. Herein, we synthesized the judicious structure of Cu2-xSe nanospheres coated with mesoporous silica for improving their biocompatibility and hydrophilicity. The Cu2-xSe@mSiO2 core-shell nanospheres were studied by scanning/transmission electron microscopy (SEM/TEM), X-ray (XRD and XPS), and UV-Visible techniques. Such nanocomposite achieved great ability in photothermal removal of cancer cells with little toxicity. The cell death mechanism has been investigated through typical biochemical assays including acridine orange and ethidium bromide (AO-EB), flowcytometry, and nuclear staining. In addition, the cell cycle arrest in human gastric cancer cells (GCCs) has also been evaluated. Strikingly, the in vivo chemo-photothermal therapy of as-prepared Cu2-xSe@mSiO2 toward GCCs confirms the excellent antitumor activity of the core-shell nanospheres under near-infrared radiation (NIR) radiation. It is firmly believed that the Cu2-xSe@mSiO2 nanocomposites hold great potential to function as OAAs for NIR mediated treatment and care of gastric cancer patients.
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Affiliation(s)
- Xiuhua Zhang
- Department of Oncology, Linyi Cancer Hospital, Shandong Province, China
| | - Lijun Wang
- Department of Emergency, The Third People's Hospital of Linyi, Shandong Province, China
| | - Xia Wu
- Department of Emergency, The Third People's Hospital of Linyi, Shandong Province, China
| | - Chunhua Cong
- Department of Oncology, Linyi Cancer Hospital, Shandong Province, China.
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18
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Chen Y, Gao P, Wu T, Pan W, Li N, Tang B. Organelle-localized radiosensitizers. Chem Commun (Camb) 2020; 56:10621-10630. [DOI: 10.1039/d0cc03245j] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This feature article highlights the recent advances of organelle-localized radiosensitizers and discusses the current challenges and future directions.
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Affiliation(s)
- Yuanyuan Chen
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
| | - Peng Gao
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
| | - Tong Wu
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
| | - Wei Pan
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
| | - Na Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
| | - Bo Tang
- College of Chemistry
- Chemical Engineering and Materials Science
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
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19
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Roles for Autophagy in Esophageal Carcinogenesis: Implications for Improving Patient Outcomes. Cancers (Basel) 2019; 11:cancers11111697. [PMID: 31683722 PMCID: PMC6895837 DOI: 10.3390/cancers11111697] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/25/2019] [Accepted: 10/26/2019] [Indexed: 02/07/2023] Open
Abstract
Esophageal cancer is among the most aggressive forms of human malignancy with five-year survival rates of <20%. Autophagy is an evolutionarily conserved catabolic process that degrades and recycles damaged organelles and misfolded proteins to maintain cellular homeostasis. While alterations in autophagy have been associated with carcinogenesis across tissues, cell type- and context-dependent roles for autophagy have been reported. Herein, we review the current knowledge related to autophagy in esophageal squamous cell carcinoma (ESCC) and esophageal adenocarcinoma (EAC), the two most common subtypes of esophageal malignancy. We explore roles for autophagy in the development and progression of ESCC and EAC. We then continue to discuss molecular markers of autophagy as they relate to esophageal patient outcomes. Finally, we summarize current literature examining roles for autophagy in ESCC and EAC response to therapy and discuss considerations for the potential use of autophagy inhibitors as experimental therapeutics that may improve patient outcomes in esophageal cancer.
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20
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Ouellette MM, Yan Y. Radiation‐activated prosurvival signaling pathways in cancer cells. PRECISION RADIATION ONCOLOGY 2019. [DOI: 10.1002/pro6.1076] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Michel M. Ouellette
- Department of Internal MedicineUniversity of Nebraska Medical Center Omaha Nebraska USA
| | - Ying Yan
- Department of Radiation OncologyUniversity of Nebraska Medical Center Omaha Nebraska USA
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21
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Wang S, Liu J, Qiu S, Yu J. Facile fabrication of Cu 9-S 5 loaded core-shell nanoparticles for near infrared radiation mediated tumor therapeutic strategy in human esophageal squamous carcinoma cells nursing care of esophageal cancer patients. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 199:111583. [PMID: 31472461 DOI: 10.1016/j.jphotobiol.2019.111583] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 07/18/2019] [Accepted: 08/01/2019] [Indexed: 02/07/2023]
Abstract
Copper chalcogenides have been exhibited to be an encouraging photothermal operator because of their great photothermal transformation proficiency, engineered effortlessness, and ease. Notwithstanding, the hydrophobic and low biocompatibility attributes related with their manufactured procedures hamper broadly natural applications. An elective methodology for improve hydrophilic nature and biocompatibility to coating into the copper-based chalcogenide nanostructures containing core shell silica materials. In this manuscript, the level headed planning configuration results in effective covering silica nanostructures onto the synthesized Cu9S5 to form Cu9S5@MS core-shell nanostructures. The structural formation and nanostructures of prepared nanomaterials with core shell structure were confirmed via analysis of transmission microscopic and particles distribution investigates, which infers that Cu9S5@MS has been organized by nano level with high stability. Also, the formation of Cu9S5@MS was confirmed by UV-Visible and X-ray techniques. As-prepared Cu9S5@MS nanovesicles display good biocompatibility, and are successfully utilized for photothermal removal of disease cells and NIR therapy. Additionally, the mode of cell death in esophageal squamous carcinoma cells were monitored various staining techniques (AO and EB, nuclear staining and flowcytometry). Further, we evaluated by the human esophageal squamous cancer cell lines to observe cell cycle arrest ability. Significantly, we demonstrate the combination of photothermal and chemotherapeutic techniques through the prepared nanovesicles exhibits outstanding impacts in the treatment of esophageal cancer therapies in vitro and in vivo.
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Affiliation(s)
- Shufang Wang
- Endoscopy room, The Second Affiliated Hospital of Nanchang University, Jiangxi Province, China
| | - Jialiang Liu
- Endoscopy room, The Second Affiliated Hospital of Nanchang University, Jiangxi Province, China
| | - Shifa Qiu
- Endoscopy room, The Second Affiliated Hospital of Nanchang University, Jiangxi Province, China
| | - Jianmin Yu
- Endoscopy room, The Second Affiliated Hospital of Nanchang University, Jiangxi Province, China.
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22
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Li Y, Yang X, Yao P, Shen W, Wu Y, Ye Z, Zhao K, Chen H, Cao J, Xing C. B7-H3 increases the radioresistance of gastric cancer cells through regulating baseline levels of cell autophagy. Am J Transl Res 2019; 11:4438-4449. [PMID: 31396347 PMCID: PMC6684931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 07/01/2019] [Indexed: 06/10/2023]
Abstract
Gastric cancer remains the second leading cause of cancer-related deaths worldwide. Adjuvant therapy has been shown to improve survival and is delivered either postoperatively (chemoradiotherapy) or perioperatively (chemotherapy) in Western countries. Debate continues regarding which of these approaches is an optimal strategy. Radioresistance in gastric cancer cells remains a serious concern. B7 homologue 3 (B7-H3, CD276), a newly found member of B7 immunoregulatory family, was found to be expressed in aberrant gastric cancer cells, and played a direct role in gastric cancer progression systems in a previous study. With upregulation or downregulation of B7-H3, it was observed that B7-H3 could increase radiotherapy resistance of gastric cancer cells by modulating apoptosis, cell cycle progression, and DNA double-strand breaks. Furthermore, it was found that B7-H3 could regulate baseline levels of cell autophagy. B7-H3 expression was negatively correlated with LC3-B expression in gastric cancer tissues. It was found that increasing baseline levels of cell autophagy with rapamycin in B7-H3-overexpressing cells could improve their sensitivity to radiation. This protein also exerted its function by modulating apoptosis and DNA double-strand breaks. Overall, it is demonstrated that B7-H3 increases the radiotherapy resistance of gastric cancer cells through regulating baseline levels of cell autophagy.
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Affiliation(s)
- Yecheng Li
- Department of General Surgery, Second Affiliated Hospital of Soochow UniversitySuzhou 215004, China
| | - Xiaodong Yang
- Department of General Surgery, Second Affiliated Hospital of Soochow UniversitySuzhou 215004, China
| | - Pingan Yao
- Department of General Surgery, Second Affiliated Hospital of Soochow UniversitySuzhou 215004, China
| | - Wenqi Shen
- Department of General Surgery, Second Affiliated Hospital of Soochow UniversitySuzhou 215004, China
| | - Yong Wu
- Department of General Surgery, Second Affiliated Hospital of Soochow UniversitySuzhou 215004, China
| | - Zhenyu Ye
- Department of General Surgery, Second Affiliated Hospital of Soochow UniversitySuzhou 215004, China
| | - Kui Zhao
- Department of General Surgery, Second Affiliated Hospital of Soochow UniversitySuzhou 215004, China
| | - Hanqing Chen
- Department of Hematology, The First Affiliated Hospital of Soochow UniversitySuzhou 215006, China
| | - Jianping Cao
- School of Radiation Medicine and Protection, Medical College of Soochow UniversitySuzhou 215123, China
- State Key Laboratory of Radiation Medicine and Protection and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow UniversitySuzhou 215123, China
| | - Chungen Xing
- Department of General Surgery, Second Affiliated Hospital of Soochow UniversitySuzhou 215004, China
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23
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Ma AG, Yu LM, Zhao H, Qin CW, Tian XY, Wang Q. PSMD4 regulates the malignancy of esophageal cancer cells by suppressing endoplasmic reticulum stress. Kaohsiung J Med Sci 2019; 35:591-597. [PMID: 31162820 DOI: 10.1002/kjm2.12093] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 05/09/2019] [Indexed: 12/28/2022] Open
Abstract
Proteasome 26S subunit non-ATPase 4 (PSMD4) is an important proteasome ubiquitin receptor and plays a key role in endoplasmic reticulum stress (ERS). However, the study of PSMD4 in esophageal cancer (EC) is relatively rare. Here, we found that the expression of PSMD4 was markedly enhanced in EC tissues and cell lines. The cell counting kit-8 (CCK-8) assay showed that overexpression of PSMD4 significantly enhanced Eca109 cell viability, while inhibition of PSMD4 reduced Eca109 cell viability. Knockdown of PSMD4 induced Eca109 cell apoptosis and cell cycle arrest. More importantly, knockdown of PSMD4 significantly enhanced the expression of glucose regulated protein 78, activating transcription factor 6, and p-protein kinase R-like ER kinase, indicating an enhanced ERS response in esophageal cancer cells. Compared with the control cells, brefeldin A significantly inhibited the expression of PSMD4 and increased the expression of p53-upregulated modulator of apoptosis. However, such effects were largely reversed after overexpressing PSMD4 in Eca109 cells, suggesting that silencing PSMD4 could enhance ERS-induced cell apoptosis. In summary, upregulation of PSMD4 promoted the progression of esophageal cancer mainly by reducing ERS-induced cell apoptosis.
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Affiliation(s)
- Ai-Guo Ma
- Department of Thoracic Surgery, Tengzhou Central People's Hospital, Tengzhou City, Shandong Province, PR China
| | - Li-Mei Yu
- Department of Critical Care Medicine, Tengzhou Central People's Hospital, Tengzhou City, Shandong Province, PR China
| | - Hong Zhao
- Department of Thoracic Surgery, Tengzhou Central People's Hospital, Tengzhou City, Shandong Province, PR China
| | - Cun-Wei Qin
- Department of Thoracic Surgery, Tengzhou Central People's Hospital, Tengzhou City, Shandong Province, PR China
| | - Xiang-Yu Tian
- Imaging Center, Tengzhou Central People's Hospital, Tengzhou City, Shandong Province, PR China
| | - Qing Wang
- Department of Thoracic Surgery, Tengzhou Central People's Hospital, Tengzhou City, Shandong Province, PR China
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24
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Shah SS, Rodriguez GA, Musick A, Walters WM, de Cordoba N, Barbarite E, Marlow MM, Marples B, Prince JS, Komotar RJ, Vanni S, Graham RM. Targeting Glioblastoma Stem Cells with 2-Deoxy-D-Glucose (2-DG) Potentiates Radiation-Induced Unfolded Protein Response (UPR). Cancers (Basel) 2019; 11:cancers11020159. [PMID: 30709011 PMCID: PMC6406669 DOI: 10.3390/cancers11020159] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 01/24/2019] [Accepted: 01/29/2019] [Indexed: 01/09/2023] Open
Abstract
Glioblastoma (GBM) is the most common and aggressive primary brain tumor in adults, and despite optimized treatment options, median survival remains dismal. Contemporary evidence suggests disease recurrence results from expansion of a robustly radioresistant subset of GBM progenitor cells, termed GBM stem cells (GSCs). In this study, we utilized transmission electron microscopy to uncover ultrastructural effects on patient-derived GSC lines exposed to supratherapeutic radiotherapy levels. Elevated autophagosome formation and increased endoplasmic reticulum (ER) internal diameter, a surrogate for ER stress and activation of unfolded protein response (UPR), was uncovered. These observations were confirmed via protein expression through Western blot. Upon interrogating genomic data from an open-access GBM patient database, overexpression of UPR-related chaperone protein genes was inversely correlated with patient survival. This indicated controlled UPR may play a role in promoting radioresistance. To determine if potentiating UPR further can induce apoptosis, we exposed GSCs to radiation with an ER stress-inducing drug, 2-deoxy-D-glucose (2-DG), and found dose-dependent decreases in viability and increased apoptotic marker expression. Taken together, our results indicate GSC radioresistance is, in part, achieved by overexpression and overactivation of ER stress-related pathways, and this effect can be overcome via potentiation of UPR, leading to loss of GSC viability.
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Affiliation(s)
- Sumedh S Shah
- University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Gregor A Rodriguez
- University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Alexis Musick
- Dauer Electron Microscopy Laboratory, Department of Biology, University of Miami, Coral Gables, FL 33146, USA.
| | - Winston M Walters
- University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Nicolas de Cordoba
- University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Eric Barbarite
- University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Megan M Marlow
- University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Brian Marples
- University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Sylvester Comprehensive Cancer Center, University of Miami Health System, Miami, FL 33136, USA.
| | - Jeffrey S Prince
- Dauer Electron Microscopy Laboratory, Department of Biology, University of Miami, Coral Gables, FL 33146, USA.
| | - Ricardo J Komotar
- University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Sylvester Comprehensive Cancer Center, University of Miami Health System, Miami, FL 33136, USA.
| | - Steven Vanni
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
| | - Regina M Graham
- University of Miami Brain Tumor Initiative, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
- Sylvester Comprehensive Cancer Center, University of Miami Health System, Miami, FL 33136, USA.
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25
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Glucose-Regulated Protein 94 Modulates the Response of Osteosarcoma to Chemotherapy. DISEASE MARKERS 2019; 2019:4569718. [PMID: 30719181 PMCID: PMC6335772 DOI: 10.1155/2019/4569718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 09/19/2018] [Accepted: 10/16/2018] [Indexed: 02/07/2023]
Abstract
Background Osteosarcoma (OS) is the most common and most aggressive primary solid malignant bone tumor in children and young adults and has high rates of recurrence and metastasis. The endoplasmic reticulum (ER) stress pathway is important in regulating the chemo-responsiveness of cancer. However, the role of glucose-regulated protein 94 (GRP94) in regulating the response of OS to chemotherapy has never been explored. Methods In this study, two OS cell lines, MG63 and 143B cells, were used to evaluate the mechanism by which GRP94 modulates the response of osteosarcoma to chemotherapy. GRP94-knockdown (GRP94-KD) OS cells were generated using short hairpin RNAs, and the response to chemotherapy was assessed using an MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. Cell apoptosis was quantified with propidium iodide (PI) staining and flow cytometry. Results Silencing of GRP94 in MG63 and 143B cells did not influence the growth and migration of the cells, but reduced the colony formation. GRP94-KD OS cells were more resistant to paclitaxel, gemcitabine, and epirubicin treatments than cells transfected with the scrambled control, and more cells transfected with the scrambled control underwent apoptosis after paclitaxel, gemcitabine, and epirubicin treatments than GRP94-KD cells. Conclusions Therefore, GRP94 silencing may increase the resistance of MG63 and 143B cells to paclitaxel, gemcitabine, and epirubicin treatments by inhibiting the induction of apoptosis. Thus, GRP94 may be a key biomarker for the chemotherapeutic response of OS.
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Zhang M, Han N, Jiang Y, Wang J, Li G, Lv X, Li G, Qiao Q. EGFR confers radioresistance in human oropharyngeal carcinoma by activating endoplasmic reticulum stress signaling PERK-eIF2α-GRP94 and IRE1α-XBP1-GRP78. Cancer Med 2018; 7:6234-6246. [PMID: 30414263 PMCID: PMC6308109 DOI: 10.1002/cam4.1862] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Revised: 08/16/2018] [Accepted: 09/18/2018] [Indexed: 12/12/2022] Open
Abstract
The activation of epidermal growth factor receptor (EGFR) is associated with radioresistance in malignant tumors. Specifically, radiation can destroy endoplasmic reticulum (ER) homeostasis to induce ER stress (ERS). However, the effect of EGFR‐mediated regulation of ERS signaling pathway on radiosensitivity has not yet been reported. The present study showed that silencing EGFR increased radiosensitivity of both radiosensitive and radioresistant oropharyngeal squamous cell carcinoma (OSCC) cells by inhibiting ER stress signaling (PERK‐eIF2α‐GRP94 and IRE1α‐XBP1‐GRP78). This effect was abolished by pretreatment with EGF, however. In addition, knockdown of EGFR in OSCC cells inhibited DNA double‐stand break repair and autophagy while increased radiation‐induced apoptosis. Conversely, activating ERS inhibited the aforementioned functions. Furthermore, EGF increased ER stress‐independent ERK and AKT signaling upon irradiation of OSCC cells. Immunohistochemical analysis of 80 tissue samples from OSCC patients showed that co‐expression of EGFR and PERK was associated with poor prognosis. It thus appears EGFR confers radioresistance in OSCC by activating ER stress signaling. These results suggested that the cooperative effects of radiotherapy and EGFR‐targeted inhibitor therapy can be further improved by inhibiting PERK‐eIF2α‐GRP94 and IRE1α‐GRP78 in non‐response oropharyngeal carcinoma patients.
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Affiliation(s)
- Miao Zhang
- Department of Radiation Oncology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Ning Han
- Department of Radiation Oncology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yuanjun Jiang
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jie Wang
- Department of Radiation Oncology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Gaiyan Li
- Department of Radiation Oncology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xintong Lv
- Department of Radiation Oncology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Guang Li
- Department of Radiation Oncology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Qiao Qiao
- Department of Radiation Oncology, The First Hospital of China Medical University, Shenyang, Liaoning, China
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Abstract
With the development of radiotherapeutic oncology, computer technology and medical imaging technology, radiation therapy has made great progress. Research on the impact and the specific mechanism of radiation on tumors has become a central topic in cancer therapy. According to the traditional view, radiation can directly affect the structure of the DNA double helix, which in turn activates DNA damage sensors to induce apoptosis, necrosis, and aging or affects normal mitosis events and ultimately rewires various biological characteristics of neoplasm cells. In addition, irradiation damages subcellular structures, such as the cytoplasmic membrane, endoplasmic reticulum, ribosome, mitochondria, and lysosome of cancer cells to regulate various biological activities of tumor cells. Recent studies have shown that radiation can also change the tumor cell phenotype, immunogenicity and microenvironment, thereby globally altering the biological behavior of cancer cells. In this review, we focus on the effects of therapeutic radiation on the biological features of tumor cells to provide a theoretical basis for combinational therapy and inaugurate a new era in oncology.
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Affiliation(s)
- Jin-Song Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, RM6102, New Research Building, 17 Panjiayuan Nanli, Chaoyang District, 100021, Beijing, China
| | - Hai-Juan Wang
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, RM6102, New Research Building, 17 Panjiayuan Nanli, Chaoyang District, 100021, Beijing, China.
| | - Hai-Li Qian
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, RM6102, New Research Building, 17 Panjiayuan Nanli, Chaoyang District, 100021, Beijing, China.
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28
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Wang B, Zhou H, Zhu Y. Mechanism of Oxymatrine-induced Human Esophageal Cancer Cell Apoptosis by the Endoplasmic Reticulum Stress Pathway. Open Life Sci 2018; 13:112-118. [PMID: 33817076 PMCID: PMC7874685 DOI: 10.1515/biol-2018-0016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 01/08/2018] [Indexed: 01/14/2023] Open
Abstract
Endoplasmic reticulum stress is one of the mechanisms of cell apoptosis. In this study, the mechanism of oxymatrine-induced human esophageal cancer Eca-109 cell apoptosis by the endoplasmic reticulum stress pathway was investigated. Eca-109 cells were cultured in vitro with different doses of oxymatrine (0.5, 1, 2 μg/mL) for 48 h. The cell viability and proliferation inhibition rate were examined by MTT assay and cell cycle assay. The apoptosis rate was examined by Annexin V-FITC/propidium iodide assay. The expression of endoplasmic reticulum stress markers, including binding immunoglobulin protein and CCAAT-enhancer-binding protein homologous protein, were determined by real-time quantitative polymerase chain reaction and western blotting, respectively. MTT data showed that oxymatrine significantly inhibited the proliferation of Eca-109 cells. The cell apoptosis rate was quantified by flow cytometry. The expression of binding immunoglobulin protein was markedly downregulated in oxymatrine-treated Eca-109 cells while that of CCAAT-enhancer-binding protein homologous protein was upregulated. Oxymatrine inhibited proliferation and induced apoptosis of human esophageal carcinoma Eca-109 cells. Thus, oxymatrine may be a potential agent for treating human esophageal cancer.
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Affiliation(s)
- Baiyan Wang
- School of Basic Medical, Henan University of Traditional Chinese Medicine, Zhengzhou, 450046, Henan, China
| | - Huiru Zhou
- The Second School of Clinical Medicine, Henan University of Traditional Chinese Medicine, Zhengzhou, 450046, Henan, China
| | - Yanqin Zhu
- School of Basic Medical, Henan University of Traditional Chinese Medicine, Zhengzhou, 450046, Henan, China
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Yu XS, Du J, Fan YJ, Liu FJ, Cao LL, Liang N, Xu DG, Zhang JD. Activation of endoplasmic reticulum stress promotes autophagy and apoptosis and reverses chemoresistance of human small cell lung cancer cells by inhibiting the PI3K/AKT/mTOR signaling pathway. Oncotarget 2018; 7:76827-76839. [PMID: 27765907 PMCID: PMC5363552 DOI: 10.18632/oncotarget.12718] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 09/28/2016] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE This study aims to investigate the effects of endoplasmic reticulum stress (ERS) on autophagy, apoptosis and chemoresistance of human small cell lung cancer (SCLC) cells via the PI3K/AKT/mTOR signaling pathway. RESULTS The expressions of ERS-related proteins (PEAK, eIF2α and CHOP) up-regulated, autophagy-related proteins (LC3, LC3-II and Beclin1) and apoptosis-related proteins (Bax and procaspase-3) down-regulated in NCI-H446 and H69 cells after tunicamycin treatment for 24 h. Compared with the blank group, the tunicamycin, BEZ235 and tunicamycin + BEZ235 groups exhibited decreased expressions of p-PI3K, p-AKT and p-mTOR, and increased expressions of autophagy-related proteins (LC3, LC3-II and Beclin1) and apoptosis proteins (Bax and procaspase-3), and the most obvious changes were observed in the tunicamycin + BEZ235 group. MATERIALS AND METHODS CCK-8 assay was applied to select the best cell line from five SCLC cell lines (NCI-H446, H69, H526, H146 and H209). Finally, NCI-H446 and H69 cells were selected for further experiments. NCI-H446/CDDP and H69/CDDP were selected and divided into the blank group, tunicamycin (an ESR inducer) group, BEZ235 (inhibitors of PI3K/AKT/mTOR pathway) group and tunicamycin + BEZ235 group. Cell apoptosis was detected by flow cytometry. Autophagy was observed by fluorescence microscopy and flow cytometry. Western blotting was used to detect the expressions of ERS-related proteins, autophagy-related proteins, apoptosis-related proteins and PI3K/AKT/mTOR pathway-related proteins. CONCLUSIONS Our findings provide evidence that the activation of ERS could promote autophagy and apoptosis and reverse chemoresistance of human SCLC cells by inhibiting the PI3K/AKT/mTOR pathway.
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Affiliation(s)
- Xin-Shuang Yu
- Department of Radiation Oncology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, P.R. China
| | - Juan Du
- Department of Radiation Oncology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, P.R. China.,Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, P.R. China
| | - Yu-Jun Fan
- Medical Management Service Center of Shandong Provincial Health and Family Planning Commission, Jinan 250014, P.R. China
| | - Feng-Jun Liu
- Department of Radiation Oncology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, P.R. China
| | - Li-Li Cao
- Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, P.R. China
| | - Ning Liang
- Department of Radiation Oncology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, P.R. China
| | - De-Guo Xu
- Department of Radiation Oncology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, P.R. China
| | - Jian-Dong Zhang
- Department of Radiation Oncology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, P.R. China
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30
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Identification of the caveolae/raft-mediated endocytosis as the primary entry pathway for aquareovirus. Virology 2018; 513:195-207. [DOI: 10.1016/j.virol.2017.09.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/21/2017] [Accepted: 09/22/2017] [Indexed: 12/11/2022]
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31
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Sun C, Han C, Jiang Y, Han N, Zhang M, Li G, Qiao Q. Inhibition of GRP78 abrogates radioresistance in oropharyngeal carcinoma cells after EGFR inhibition by cetuximab. PLoS One 2017; 12:e0188932. [PMID: 29232380 PMCID: PMC5726659 DOI: 10.1371/journal.pone.0188932] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 11/15/2017] [Indexed: 01/24/2023] Open
Abstract
The EGFR-specific mAb cetuximab is one of the most effective treatments for oropharyngeal carcinoma, while patient responses to EGFR inhibitors given alone are modest. Combination treatment with radiation can improve the efficacy of treatment through increasing radiosensitivity, while resistance to radiation after administration of cetuximab limits its efficiency. Radiation and drugs can damage the endoplasmic reticulum (ER) homeostatic state and result in ER stress (ERS), subsequently causing resistance to radiation and drugs. Whether the ERS pathway is involved in radioresistance after administration of cetuximab has not been reported. Herein, we show that cetuximab could increase the radiosensitivity of FaDu cells but not Detroit562 cells. In addition, cetuximab inhibited the radiation-induced activation of the ERS signalling pathway IRE1α/ATF6-GRP78 in FaDu cells, while this effect was absent in Detroit562 cells. Silencing GRP78 increased the radiosensitivity of oropharyngeal carcinoma cells and inhibited radiation-induced DNA double-strand-break (DSB) repair and autophagy. More interestingly, silencing GRP78 abrogated resistance to cetuximab and radiation in Detroit562 cells and had a synergistic effect with cetuximab in increasing the radiosensitivity of FaDu cells. Immunohistochemistry showed that overexpression of both GRP78 and EGFR was associated with a poor prognosis in oropharyngeal carcinoma patients (P<0.05). Overall, the results of this study show that radioresistance after EGFR inhibition by cetuximab is mediated by the ERS signalling pathway IRE1α/ATF6-GRP78. This suppression was consequently unable to inhibit radiation-induced DSB repair and autophagy in oropharyngeal carcinoma cells, which conferred resistance to radiotherapy and cetuximab. These results suggest that the cooperative effects of radiotherapy and cetuximab could be further improved by inhibiting GRP78 in non-responsive oropharyngeal carcinoma patients.
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Affiliation(s)
- Chaonan Sun
- Department of Radiotherapy, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Chuyang Han
- Department of Radiotherapy, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yuanjun Jiang
- Department of Urology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Ning Han
- Department of Radiotherapy, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Miao Zhang
- Department of Radiotherapy, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Guang Li
- Department of Radiotherapy, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Qiao Qiao
- Department of Radiotherapy, the First Hospital of China Medical University, Shenyang, Liaoning, China
- * E-mail:
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32
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Qiao Q, Sun C, Han C, Han N, Zhang M, Li G. Endoplasmic reticulum stress pathway PERK-eIF2α confers radioresistance in oropharyngeal carcinoma by activating NF-κB. Cancer Sci 2017; 108:1421-1431. [PMID: 28418119 PMCID: PMC5497722 DOI: 10.1111/cas.13260] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 04/05/2017] [Accepted: 04/08/2017] [Indexed: 12/31/2022] Open
Abstract
Endoplasmic reticulum stress (ERS) plays an important role in the pathogenesis and development of malignant tumors, as well as in the regulation of radiochemoresistance and chemoresistance in many malignancies. ERS signaling pathway protein kinase RNA‐like endoplasmic reticulum kinase (PERK)‐eukaryotic initiation factor‐2 (eIF2α) may induce aberrant activation of nuclear factor‐κB (NF‐κB). Our previous study showed that NF‐κB conferred radioresistance in lymphoma cells. However, whether PERK‐eIF2α regulates radioresistance in oropharyngeal carcinoma through NF‐κB activation is unknown. Herein, we showed that PERK overexpression correlated with a poor prognosis for patients with oropharyngeal carcinoma (P < 0.01). Meanwhile, the percentage of the high expression level of PERK in oropharyngeal carcinoma patients resistant to radiation was higher than in patients sensitive to radiation (77.7 and 33.3%, respectively; P < 0.05). Silencing PERK and eIF2α increased the radiosensitivity in oropharyngeal carcinoma cells and increased radiation‐induced apoptosis and G2/M phase arrest. PERK‐eIF2α silencing also inhibited radiation‐induced NF‐κB phosphorylation and increased the DNA double strand break‐related proteins ATM phosphorylation. NF‐κB activator TNF‐α and the ATM inhibitor Ku55933 offset the regulatory effect of eIF2α on the expression of radiation‐induced cell apoptosis‐related proteins and the G2/M phase arrest‐related proteins. These data indicate that PERK regulates radioresistance in oropharyngeal carcinoma through NF‐kB activation‐mediated phosphorylation of eIF2α, enhancing X‐ray‐induced activation of DNA DSB repair, cell apoptosis inhibition and G2/M cell cycle arrest.
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Affiliation(s)
- Qiao Qiao
- Department of Radiotherapy, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Chaonan Sun
- Department of Radiotherapy, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Chuyang Han
- Department of Radiotherapy, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Ning Han
- Department of Radiotherapy, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Miao Zhang
- Department of Radiotherapy, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Guang Li
- Department of Radiotherapy, The First Hospital of China Medical University, Shenyang, Liaoning, China
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Tam SY, Wu VWC, Law HKW. Influence of autophagy on the efficacy of radiotherapy. Radiat Oncol 2017; 12:57. [PMID: 28320471 PMCID: PMC5359955 DOI: 10.1186/s13014-017-0795-y] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 03/02/2017] [Indexed: 02/06/2023] Open
Abstract
Autophagy is an important catabolic process in which cells digest and recycle their own cytoplasmic contents for maintaining cellular homeostasis. Interestingly, autophagy could play both pro-death and pro-survival roles in influencing the development of cancer via various signal pathways. As radiotherapy is one of the main treatment modalities for cancer, we reviewed the effect of autophagy modulations on radiosensitivity and radiotherapy efficacy in various cancer types. The future development of autophagy modifications for improving radiotherapy efficacy and cancer prognosis will also be discussed.
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Affiliation(s)
- Shing Yau Tam
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Hong Kong, China
| | - Vincent Wing Cheung Wu
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Hong Kong, China
| | - Helen Ka Wai Law
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Hong Kong, China.
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34
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Tian J, Liu R, Qu Q. Role of endoplasmic reticulum stress on cisplatin resistance in ovarian carcinoma. Oncol Lett 2017; 13:1437-1443. [PMID: 28454274 DOI: 10.3892/ol.2017.5580] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 10/14/2016] [Indexed: 12/16/2022] Open
Abstract
Endoplasmic reticulum (ER) is an essential site of cellular homeostasis regulation. ER stress (ERS) may induce autophagy in tumor cells that escape from apoptosis. The present study examined the effects and mechanism of ERS on cisplatin (DDP) sensitivity in ovarian carcinoma. SKOV3 tumor cells treated with Saquinavir were subjected to western blot and reverse transcription-quantitative polymerase chain reaction analysis to determine protein and messenger RNA (mRNA) expression levels of mechanistic target of rapamycin (mTOR) and Beclin 1. MTT assay was used to analyze the influence of Saquinavir on DDP resistance in SKOV3 cells. Saquinavir induced glucose-regulated protein 78 expression, which is a marker of ERS. Following treatment with various doses of Saquinavir, the sensitivity of ovarian cancer cells to DDP decreased significantly. Protein and mRNA expression levels of mTOR and Beclin 1 in SKOV3 cells were increased when the cells were exposed to Saquinavir or DDP for 24 h. Moreover, mTOR and Beclin 1 expression levels were highest in the Saquinavir + DDP group (0.684±0.072 and 0.6467±0.0468, respectively). SKOV3 tumor cells were also exposed to the autophagy inhibitor, 3-methyladenine (3-MA), and different concentrations of Saquinavir. Analysis of half maximal inhibitory concentration (IC50) values of DDP after this treatment demonstrated that IC50 values were significantly decreased compared with Saquinavir alone (P<0.001), suggesting that the sensitivity to DDP was improved in ovarian cancer cells after 3-MA exposure. These findings demonstrated that Saquinavir is able to induce ERS in SKOV3 cells effectively, and ER-induced stress may decrease the sensitivity of DDP in SKOV3 cells. Furthermore, ERS may regulate cell autophagy through the mTOR and Beclin 1 pathways, leading to a reduction in the sensitivity of DDP in SKOV3 cells. ERS in tumor cells and autophagy may be a potential target to improve the therapeutic effect of chemotherapy and reduce drug resistance in tumors.
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Affiliation(s)
- Jing Tian
- Department of Gynaecology, Tianjin First Central Hospital, Tianjin 300192, P.R. China
| | - Rong Liu
- Department of Gynaecology, Tianjin First Central Hospital, Tianjin 300192, P.R. China
| | - Quanxin Qu
- Department of Gynaecology, Tianjin First Central Hospital, Tianjin 300192, P.R. China
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Zheng X, Jin X, Li F, Liu X, Liu Y, Ye F, Li P, Zhao T, Li Q. Inhibiting autophagy with chloroquine enhances the anti-tumor effect of high-LET carbon ions via ER stress-related apoptosis. Med Oncol 2017; 34:25. [PMID: 28070729 DOI: 10.1007/s12032-017-0883-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 01/02/2017] [Indexed: 12/11/2022]
Abstract
Energetic carbon ions (CI) offer great advantages over conventional radiations such as X- or γ-rays in cancer radiotherapy. High linear energy transfer (LET) CI can induce both endoplasmic reticulum (ER) stress and autophagy in tumor cells under certain circumstances. The molecular connection between ER stress and autophagy in tumor exposed to high-LET radiation and how these two pathways influence the therapeutic effect against tumor remain poorly understood. In this work, we studied the impact of autophagy and apoptosis induced by ER stress following high-LET CI radiation on the radiosensitivity of S180 cells both in vitro and in vivo. In the in vitro experiment, X-rays were also used as a reference radiation. Our results documented that the combination of CI radiation with chloroquine (CQ), a special autophagy inhibitor, produced more pronounced proliferation suppression in S180 cells and xenograft tumors. Co-treatment with CI radiation and CQ could block autophagy through the IRE1/JNK/Beclin-1 axis and enhance apoptotic cell death via the activation of C/EBP homologous protein (CHOP) by the IRE1 pathway rather than PERK in vitro and in vivo. Thus, our study indicates that inhibiting autophagy might be a promising therapeutic strategy in CI radiotherapy via aggravating the ER stress-related apoptosis.
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Affiliation(s)
- Xiaogang Zheng
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu Province, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaodong Jin
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu Province, China
| | - Feifei Li
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu Province, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiongxiong Liu
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu Province, China
| | - Yan Liu
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu Province, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fei Ye
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu Province, China
| | - Ping Li
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu Province, China
| | - Ting Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu Province, China
| | - Qiang Li
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, China. .,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China. .,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu Province, China.
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36
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Langer R, Streutker CJ, Swanson PE. Autophagy and its current relevance to the diagnosis and clinical management of esophageal diseases. Ann N Y Acad Sci 2016; 1381:113-121. [PMID: 27526024 DOI: 10.1111/nyas.13190] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 06/25/2016] [Accepted: 07/07/2016] [Indexed: 12/26/2022]
Abstract
Autophagy is an evolutionarily conserved cell survival program that degrades dysfunctional organelles and misfolded or long-lived proteins through the formation of lysosomes. Basal autophagy helps to maintain cellular homeostasis, while additional autophagy can be induced under cellular stress conditions. Autophagy has shown to be involved in a variety of diseases, such as inflammation, autoimmune diseases, degeneration, and cancer. We review the relevance of autophagy to the diagnosis and clinical management of esophageal diseases with the following questions in mind. What is autophagy and can/should we detect it in routine pathology specimens? What is the role of autophagy in gastroesophageal reflux disease/inflammatory esophageal disease? What role may autophagy play in the interaction between pro- and antiapoptotic pathways in esophageal malignancies and treatment?
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Affiliation(s)
- Rupert Langer
- Institute of Pathology, University of Bern, Bern, Switzerland.
| | - Catherine J Streutker
- Li Ka Shing Institute, St. Michael's Hospital and Department of Laboratory Medicine and Pathobiology University of Toronto, Toronto, Canada
| | - Paul E Swanson
- Cumming School of Medicine, University of Calgary, Calgary, Canada
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37
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Jin Z, Yan W, Jin H, Ge C, Xu Y. Psoralidin inhibits proliferation and enhances apoptosis of human esophageal carcinoma cells via NF-κB and PI3K/Akt signaling pathways. Oncol Lett 2016; 12:971-976. [PMID: 27446379 DOI: 10.3892/ol.2016.4716] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 12/18/2015] [Indexed: 12/27/2022] Open
Abstract
Esophageal cancer is the most common gastrointestinal cancer. Psoralidin exhibits antioxidant, anti-apoptotic, anti-inflammatory and antitumor effects, which result in the inhibition of cancer formation. The present study aimed to investigate the effect of psoralidin on esophageal carcinoma proliferation and growth, and to elucidate its underlying mechanism of action. The effect of psoralidin on cell proliferation was investigated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Using an annexin V-fluorescein isothiocyanate/propidium iodide apoptosis detection kit and 4',6-diamidino-2-phenylindole staining assay, the present study demonstrated that psoralidin significantly enhanced apoptosis of human esophageal carcinoma Eca9706 cells. In addition, caspase-3 activity was analyzed with a caspase-3 colorimetric assay kit, while nuclear factor (NF)-κB activity and protein phosphatidylinositol 3-kinase (PI3K)/Akt expression were measured with an NF-κB enzyme-linked immunosorbent assay kit and western blot analysis, respectively. Eca9706 cells were treated with a PI3K agonist in order to investigate the mechanism of action of psoralidin. It was observed that psoralidin was able to decrease the proliferation and promote the cellular apoptosis of Eca9706 cells in a dose-dependent manner. Furthermore, psoralidin was also able to inhibit the caspase-3 activity of Eca9706 cells in a dose-dependent manner. In addition, psoralidin inhibited NF-κB activity and reduced PI3K and Akt protein expression in Eca9706 cells. Notably, the PI3K agonist was able to reverse the effect of psoralidin on Eca9706 cells. The results of the present study demonstrated that psoralidin was able to inhibit proliferation and enhance apoptosis of human esophageal carcinoma cells via the NF-κB and PI3K/Akt signaling pathways.
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Affiliation(s)
- Zhiliang Jin
- Department of Oncology, Jingzhou Central Hospital, Jingzhou, Hubei 434020, P.R. China
| | - Wei Yan
- Department of Gastroenterology, Jingzhou Central Hospital, Jingzhou, Hubei 434020, P.R. China
| | - Hui Jin
- Department of Neonatology, Jingzhou Central Hospital, Jingzhou, Hubei 434020, P.R. China
| | - Changzheng Ge
- Department of Oncology, Jingzhou Central Hospital, Jingzhou, Hubei 434020, P.R. China
| | - Yanhua Xu
- Department of Oncology, Jingzhou Central Hospital, Jingzhou, Hubei 434020, P.R. China
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Han FS, Yang SJ, Lin MB, Chen YQ, Yang P, Xu JM. Chitooligosaccharides promote radiosensitivity in colon cancer line SW480. World J Gastroenterol 2016; 22:5193-5200. [PMID: 27298562 PMCID: PMC4893466 DOI: 10.3748/wjg.v22.i22.5193] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 03/02/2016] [Accepted: 03/18/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the anti-proliferation and radiosensitization effect of chitooligosaccharides (COS) on human colon cancer cell line SW480.
METHODS: SW480 cells were treated with 0, 1.0, 2.0, 3.0, 4.0 and 5.0 mg/mL of COS for 48 h. CCK-8 assay was employed to obtain the cell survival ratio of SW480 cells, and the anti-proliferation curve was observed with the inhibition ratio of COS on SW480 cells. The RAY + COS group was treated with 1.0 mg/mL of COS for 48 h, while both the RAY and RAY+COS groups were exposed to X-ray at 0, 1, 2, 4, 6 and 8 Gy, respectively. Clonogenic assay was used to analyze cell viability in the two groups at 10 d after treatment, and a cell survival curve was used to analyze the sensitization ratio of COS. The RAY group was exposed to X-ray at 6 Gy, while the RAY+COS group was treated with 1.0 mg/mL of COS for 48 h in advance and exposed to X-ray at 6 Gy. Flow cytometry was employed to detect cell cycle and apoptosis rate in the non-treatment group, as well as in the RAY and RAY + COS groups after 24 h of treatment.
RESULTS: COS inhibited the proliferation of SW480 cells, and the inhibition rate positively correlated with the concentration of COS (P < 0.01). Cell viability decreased as radiation dose increased in the RAY and RAY+COS groups (P < 0.01). Cell viabilities in the RAY+COS group were lower than in the RAY group at all doses of X-ray exposure (P < 0.01), and the sensitization ratio of COS on SW480 cells was 1.39. Compared with the non-treatment group, there was a significant increase in apoptosis rate in both the RAY and RAY + COS groups; while the apoptosis rate in the RAY+COS group was significantly higher than in the RAY group (P < 0.01). In comparing these three groups, the percentage of G2/M phase in both the RAY and RAY + COS groups significantly increased, and the percentage of the S phase and G0/G1 phase was downregulated. Furthermore, the percentage in the G2/M phase was higher, and the percentage in the S phase and G0/G1 phase was lower in the RAY + COS group vs RAY group (P < 0.01).
CONCLUSION: COS can inhibit the proliferation of SW480 cells and enhance the radiosensitization of SW480 cells, inducing apoptosis and G2/M phase arrest.
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Li F, Zheng X, Liu Y, Li P, Liu X, Ye F, Zhao T, Wu Q, Jin X, Li Q. Different Roles of CHOP and JNK in Mediating Radiation-Induced Autophagy and Apoptosis in Breast Cancer Cells. Radiat Res 2016; 185:539-48. [PMID: 27135967 DOI: 10.1667/rr14344.1] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Unfolded protein response (UPR) is comprised of complex and conserved stress pathways that function as a short-term adaptive mechanism to reduce levels of unfolded or misfolded proteins and maintain homeostasis in the endoplasmic reticulum (ER). UPR can be triggered by prolonged or persistent ER stress under many physiological or pathological conditions, including radiation exposure. Radiation-induced ER stress elicits autophagy and apoptosis in cancer cells, where C/EBP homologous protein (CHOP) and c-Jun NH2-terminal kinase (JNK) may play crucial roles. However, the specific mechanisms that regulate autophagy and apoptosis through CHOP and JNK after radiation exposure and how the balance of these activities determines the cellular radiosensitivity remain largely unclear. In this study, we found that exposure to X-ray radiation induced ER stress, UPR and high expression of CHOP and JNK. Furthermore, autophagy and apoptosis occurred in sequential order when breast cancer MDA-MB-231 and MCF-7 cells were exposed to X-ray radiation. CHOP gene knockdown with RNA interference inhibited autophagy and enhanced radiosensitivity in MDA-MB-231 cells, while impacting apoptosis and subsequently increasing radioresistance in MCF-7 cells. However, treatment with JNK inhibitor decreased autophagy while promoting apoptosis, thereby leading to radiosensitivity in both cell lines. Our results indicate that CHOP mediates radiation-induced autophagy and apoptosis in a cellular environment. Importantly, the functional consistency of regulating apoptosis and autophagy in these two irradiated breast cancer cell lines suggests that JNK may be more useful as a potential target for maximizing the efficacy of radiation therapy for breast cancers.
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Affiliation(s)
- Feifei Li
- a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;,b Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou 730000, China;,c Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China; and.,d University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaogang Zheng
- a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;,b Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou 730000, China;,c Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China; and.,d University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Liu
- a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;,b Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou 730000, China;,c Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China; and.,d University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ping Li
- a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;,b Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou 730000, China;,c Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China; and
| | - Xiongxiong Liu
- a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;,b Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou 730000, China;,c Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China; and
| | - Fei Ye
- a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;,b Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou 730000, China;,c Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China; and.,d University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ting Zhao
- a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;,b Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou 730000, China;,c Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China; and
| | - Qingfeng Wu
- a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Xiaodong Jin
- a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;,b Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou 730000, China;,c Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China; and
| | - Qiang Li
- a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;,b Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou 730000, China;,c Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China; and
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Wang M, Keogh A, Treves S, Idle JR, Beyoğlu D. The metabolomic profile of gamma-irradiated human hepatoma and muscle cells reveals metabolic changes consistent with the Warburg effect. PeerJ 2016; 4:e1624. [PMID: 26823999 PMCID: PMC4730869 DOI: 10.7717/peerj.1624] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 01/04/2016] [Indexed: 11/20/2022] Open
Abstract
The two human cell lines HepG2 from hepatoma and HMCL-7304 from striated muscle were γ-irradiated with doses between 0 and 4 Gy. Abundant γH2AX foci were observed at 4 Gy after 4 h of culture post-irradiation. Sham-irradiated cells showed no γH2AX foci and therefore no signs of radiation-induced double-strand DNA breaks. Flow cytometry indicated that 41.5% of HepG2 cells were in G2/M and this rose statistically significantly with increasing radiation dose reaching a plateau at ∼47%. Cell lysates from both cell lines were subjected to metabolomic analysis using Gas Chromatography-Mass Spectrometry (GCMS). A total of 46 metabolites could be identified by GCMS in HepG2 cell lysates and 29 in HMCL-7304 lysates, most of which occurred in HepG2 cells. Principal Components Analysis (PCA) showed a clear separation of sham, 1, 2 and 4 Gy doses. Orthogonal Projection to Latent Structures-Discriminant Analysis (OPLS-DA) revealed elevations in intracellular lactate, alanine, glucose, glucose 6-phosphate, fructose and 5-oxoproline, which were found by univariate statistics to be highly statistically significantly elevated at both 2 and 4 Gy compared with sham irradiated cells. These findings suggested upregulation of cytosolic aerobic glycolysis (the Warburg effect), with potential shunting of glucose through aldose reductase in the polyol pathway, and consumption of reduced Glutathione (GSH) due to γ-irradiation. In HMCL-7304 myotubes, a putative Warburg effect was also observed only at 2 Gy, albeit a lesser magnitude than in HepG2 cells. It is anticipated that these novel metabolic perturbations following γ-irradiation of cultured cells will lead to a fuller understanding of the mechanisms of tissue damage following ionizing radiation exposure.
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Affiliation(s)
- Min Wang
- Institute of Integrated TCM and West Medicine, Medical College, Lanzhou University, Lanzhou City, Gansu Province, P.R. China; Hepatology Research Group, Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Adrian Keogh
- Visceral and Transplantation Surgery, Department of Clinical Research, University of Bern , Bern , Switzerland
| | - Susan Treves
- Departments of Anesthesia and Biomedicine, University Hospital Basel , Basel , Switzerland
| | - Jeffrey R Idle
- Hepatology Research Group, Department of Clinical Research, University of Bern , Bern , Switzerland
| | - Diren Beyoğlu
- Hepatology Research Group, Department of Clinical Research, University of Bern , Bern , Switzerland
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Chaurasia M, Bhatt AN, Das A, Dwarakanath BS, Sharma K. Radiation-induced autophagy: mechanisms and consequences. Free Radic Res 2016; 50:273-90. [DOI: 10.3109/10715762.2015.1129534] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Liu R, Zhang L, Yang J, Zhang X, Mikkelsen R, Song S, Zhou H. HIV Protease Inhibitors Sensitize Human Head and Neck Squamous Carcinoma Cells to Radiation by Activating Endoplasmic Reticulum Stress. PLoS One 2015; 10:e0125928. [PMID: 25933118 PMCID: PMC4416809 DOI: 10.1371/journal.pone.0125928] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 03/26/2015] [Indexed: 01/04/2023] Open
Abstract
Background Human head and neck squamous cell carcinoma (HNSCC) is the sixth most malignant cancer worldwide. Despite significant advances in the delivery of treatment and surgical reconstruction, there is no significant improvement of mortality rates for this disease in the past decades. Radiotherapy is the core component of the clinical combinational therapies for HNSCC. However, the tumor cells have a tendency to develop radiation resistance, which is a major barrier to effective treatment. HIV protease inhibitors (HIV PIs) have been reported with radiosensitizing activities in HNSCC cells, but the underlying cellular/molecular mechanisms remain unclear. Our previous study has shown that HIV PIs induce cell apoptosis via activation of endoplasmic reticulum (ER) stress. The aim of this study was to examine the role of ER stress in HIV PI-induced radiosensitivity in human HNSCC. Methodology and Principal Findings HNSCC cell lines, SQ20B and FaDu, and the most commonly used HIV PIs, lopinavir and ritonavir (L/R), were used in this study. Clonogenic assay was used to assess the radiosensitivity. Cell viability, apoptosis and cell cycle were analyzed using Cellometer Vision CBA. The mRNA and protein levels of ER stress-related genes (eIF2α, CHOP, ATF-4, and XBP-1), as well as cell cycle related protein, cyclin D1, were detected by real time RT-PCR and Western blot analysis, respectively. The results demonstrated that L/R dose-dependently sensitized HNSCC cells to irradiation and inhibited cell growth. L/R-induced activation of ER stress was correlated to down-regulation of cyclin D1 expression and cell cycle arrest under G0/G1 phase. Conclusion and Significance HIV PIs sensitize HNSCC cells to radiotherapy by activation of ER stress and induction of cell cycle arrest. Our results provided evidence that HIV PIs can be potentially used in combination with radiation in the treatment of HNSCC.
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Affiliation(s)
- Runping Liu
- Jiangsu Center for Drug Screening, China Pharmaceutical University, Nanjing, 210009, China; Department of Microbiology & Immunology, Virginia Commonwealth University, Richmond, VA, 23298, United States of America
| | - Luyong Zhang
- Jiangsu Center for Drug Screening, China Pharmaceutical University, Nanjing, 210009, China
| | - Jing Yang
- Jiangsu Center for Drug Screening, China Pharmaceutical University, Nanjing, 210009, China; Department of Microbiology & Immunology, Virginia Commonwealth University, Richmond, VA, 23298, United States of America
| | - Xiaoxuan Zhang
- Jiangsu Center for Drug Screening, China Pharmaceutical University, Nanjing, 210009, China; Department of Microbiology & Immunology, Virginia Commonwealth University, Richmond, VA, 23298, United States of America
| | - Ross Mikkelsen
- Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA, 23298, United States of America
| | - Shiyu Song
- Department of Radiation Oncology, Virginia Commonwealth University, Richmond, VA, 23298, United States of America
| | - Huiping Zhou
- Department of Microbiology & Immunology, Virginia Commonwealth University, Richmond, VA, 23298, United States of America; McGuire Veterans Affairs Medical Center, Richmond, VA, 23298, United States of America
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Drake TM, Ritchie JE, Kanthou C, Staves JJ, Narramore R, Wyld L. Targeting the endoplasmic reticulum mediates radiation sensitivity in colorectal cancer. Exp Mol Pathol 2015; 98:532-9. [PMID: 25825019 DOI: 10.1016/j.yexmp.2015.03.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 03/25/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND Radiotherapy is an established treatment modality for early and locally advanced rectal cancer as part of short course radiotherapy and long course chemoradiotherapy. The unfolded protein response (UPR) is a cellular stress response pathway often activated in human solid tumours which has been implicated in resistance to both chemotherapy and radiotherapy. This research has investigated whether the UPR pathway is upregulated in ex-vivo samples of human colorectal cancer and characterised the interaction between radiotherapy and UPR activation in two human colorectal cancer cell lines in vitro. METHODS In vitro UPR expression was determined in response to clinical doses of radiotherapy in both the human colorectal adenocarcinoma (HT-29) cell line and a radio-resistant clone (HT-29R) using western blotting and quantitative polymerase chain reaction. The UPR was induced using a glucose deprivation culture technique before irradiation and radiosensitivity assessed using a clonogenic assay. Ex-vivo human colorectal cancer tissue was immuno-histochemically analysed for expression of the UPR marker glucose regulated protein 78 (GRP-78). RESULTS The UPR was strongly up regulated in ex-vivo human colorectal tumours with 36 of 50 (72.0%) specimens demonstrating moderate to strong staining for the classic UPR marker GRP-78. In vitro, therapeutic doses of radiotherapy did not induce UPR activation in either radiosensitive or radioresistant cell lines. UPR induction caused significant radiosensitisation of the radioresistant cell line (HT-29R SF2Gy=0.90 S.E.M. +/-0.08; HT-29RLG SF2Gy=0.69 S.E.M. +/-0.050). CONCLUSION This suggests that UPR induction agents may be potentially useful response modifying agents in patients undergoing therapy for colorectal cancer.
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Affiliation(s)
- T M Drake
- Academic Unit of Surgical Oncology, FU03, Department of Oncology, The Medical School, Beech Hill Road, Sheffield S10 2RX, UK.
| | - J E Ritchie
- Academic Unit of Surgical Oncology, FU03, Department of Oncology, The Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - C Kanthou
- Academic Unit of Surgical Oncology, FU03, Department of Oncology, The Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - J J Staves
- Department of Histopathology, Royal Hallamshire Hospital, Glossop Road, Sheffield S10 2JF, UK
| | - R Narramore
- The Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - L Wyld
- Academic Unit of Surgical Oncology, FU03, Department of Oncology, The Medical School, Beech Hill Road, Sheffield S10 2RX, UK.
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Wu H, Huang S, Zhang D. Autophagic responses to hypoxia and anticancer therapy in head and neck cancer. Pathol Res Pract 2015; 211:101-8. [DOI: 10.1016/j.prp.2014.11.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Revised: 10/21/2014] [Accepted: 11/11/2014] [Indexed: 02/07/2023]
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Ziomek G, Cheraghi Zanjani P, Arman D, van Breemen C, Esfandiarei M. Calcium regulation in aortic smooth muscle cells during the initial phase of tunicamycin-induced endo/sarcoplasmic reticulum stress. Eur J Pharmacol 2014; 735:86-96. [DOI: 10.1016/j.ejphar.2014.04.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 03/31/2014] [Accepted: 04/06/2014] [Indexed: 02/07/2023]
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Lee ES, Lee HJ, Lee YJ, Jeong JH, Kang S, Lim YB. Chemical chaperones reduce ionizing radiation-induced endoplasmic reticulum stress and cell death in IEC-6 cells. Biochem Biophys Res Commun 2014; 450:1005-9. [PMID: 24973711 DOI: 10.1016/j.bbrc.2014.06.091] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 06/18/2014] [Indexed: 11/16/2022]
Abstract
Radiotherapy, which is one of the most effective approaches to the treatment of various cancers, plays an important role in malignant cell eradication in the pelvic area and abdomen. However, it also generates some degree of intestinal injury. Apoptosis in the intestinal epithelium is the primary pathological factor that initiates radiation-induced intestinal injury, but the mechanism by which ionizing radiation (IR) induces apoptosis in the intestinal epithelium is not clearly understood. Recently, IR has been shown to induce endoplasmic reticulum (ER) stress, thereby activating the unfolded protein response (UPR) signaling pathway in intestinal epithelial cells. However, the consequences of the IR-induced activation of the UPR signaling pathway on radiosensitivity in intestinal epithelial cells remain to be determined. In this study, we investigated the role of ER stress responses in IR-induced intestinal epithelial cell death. We show that chemical ER stress inducers, such as tunicamycin or thapsigargin, enhanced IR-induced caspase 3 activation and DNA fragmentation in intestinal epithelial cells. Knockdown of Xbp1 or Atf6 with small interfering RNA inhibited IR-induced caspase 3 activation. Treatment with chemical chaperones prevented ER stress and subsequent apoptosis in IR-exposed intestinal epithelial cells. Our results suggest a pro-apoptotic role of ER stress in IR-exposed intestinal epithelial cells. Furthermore, inhibiting ER stress may be an effective strategy to prevent IR-induced intestinal injury.
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Affiliation(s)
- Eun Sang Lee
- Division of Radiation Effects, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
| | - Hae-June Lee
- Division of Radiation Effects, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
| | - Yoon-Jin Lee
- Division of Radiation Effects, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
| | - Jae-Hoon Jeong
- Division of Radiotherapy, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
| | - Seongman Kang
- Division of Life Sciences, Korea University, Seoul 136-701, Republic of Korea
| | - Young-Bin Lim
- Division of Radiation Effects, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea.
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Radiosensitization of tumor cells through endoplasmic reticulum stress induced by PEGylated nanogel containing gold nanoparticles. Cancer Lett 2014; 347:151-8. [DOI: 10.1016/j.canlet.2014.02.005] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 01/07/2014] [Accepted: 02/06/2014] [Indexed: 11/21/2022]
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Mechanisms of radiation toxicity in transformed and non-transformed cells. Int J Mol Sci 2013; 14:15931-58. [PMID: 23912235 PMCID: PMC3759894 DOI: 10.3390/ijms140815931] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 07/19/2013] [Accepted: 07/22/2013] [Indexed: 12/31/2022] Open
Abstract
Radiation damage to biological systems is determined by the type of radiation, the total dosage of exposure, the dose rate, and the region of the body exposed. Three modes of cell death—necrosis, apoptosis, and autophagy—as well as accelerated senescence have been demonstrated to occur in vitro and in vivo in response to radiation in cancer cells as well as in normal cells. The basis for cellular selection for each mode depends on various factors including the specific cell type involved, the dose of radiation absorbed by the cell, and whether it is proliferating and/or transformed. Here we review the signaling mechanisms activated by radiation for the induction of toxicity in transformed and normal cells. Understanding the molecular mechanisms of radiation toxicity is critical for the development of radiation countermeasures as well as for the improvement of clinical radiation in cancer treatment.
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