1
|
Wang J, Li P, Sun L, Zhang J, Yue K, Wang Y, Wu X. FAM83B regulates mitochondrial metabolism and anti-apoptotic activity in pulmonary adenocarcinoma. Apoptosis 2024; 29:743-756. [PMID: 38478170 DOI: 10.1007/s10495-024-01944-7] [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] [Accepted: 02/04/2024] [Indexed: 04/28/2024]
Abstract
Chemotherapy is an effective therapeutic modality; nevertheless, a significant proportion of patients diagnosed with lung adenocarcinoma (LUAD) demonstrate resistance to chemotherapy. Therefore, it is crucial to understand the potential regulatory mechanisms to develop novel treatment strategies. This study aims to understand how increased FAM83B expression impacts mitochondrial activity, cell apoptosis, and chemotherapy effectiveness in LUAD. Multiple assays, such as CCK8, wound healing, EdU, and transwell assays, were employed to confirm the augmented chemotherapy resistance, heightened cell proliferation, migration, and invasion caused by FAM83B overexpression in LUAD cells. Furthermore, MIMP, MTG, and ATP assays were utilized to quantify changes in mitochondrial metabolism. In vitro functional assays were performed to evaluate the influence of FAM83B overexpression on the malignant progression and resistance mechanisms to chemotherapy in LUAD. In the context of this study, it was determined that LUAD patients with increased FAM83B expression had shorter survival times, and tissue samples with FAM83B overexpression were more prone to metastasis compared to primary samples. As a result, FAM83B is identified as an adverse prognostic marker. The mechanistic analysis demonstrated that FAM83B impedes the translocation of calbindin 2 (CALB2) from the cytoplasm to the mitochondria, resulting in the inhibition of apoptosis and the promotion of mitochondrial activity. Consequently, this ultimately confers resistance to chemotherapy in LUAD. Furthermore, the administration of metformin, which blocks mitochondrial oxidative phosphorylation (OXPHOS), can restore sensitivity to drug resistance in LUAD. Taken together, these findings provide substantial evidence supporting the notion that FAM83B enhances chemotherapy resistance in LUAD through the upregulation of mitochondrial metabolism and the inhibition of apoptosis.
Collapse
Affiliation(s)
- Jiajia Wang
- Department of Pathology, School of Basic Medical Sciences and QiLu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Panpan Li
- Department of Pathology, School of Basic Medical Sciences and QiLu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Limin Sun
- Department of Orthopedics, Shandong Provincial Third Hospital, Jinan, 250031, Shandong, China
| | - Jing Zhang
- Department of Pathology, School of Basic Medical Sciences and QiLu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Ke Yue
- Department of Pathology, School of Basic Medical Sciences and QiLu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Yan Wang
- Department of Pathology, School of Basic Medical Sciences and QiLu Hospital, Shandong University, Jinan, 250012, Shandong, China
| | - Xiaojuan Wu
- Department of Pathology, School of Basic Medical Sciences and QiLu Hospital, Shandong University, Jinan, 250012, Shandong, China.
| |
Collapse
|
2
|
Chen Z, Cheng G. Fatty Acid Metabolism Signature Contributes to the Molecular Diagnosis of a Malignant Gastric Cancer Subtype with Poor Prognosis and Lower Mutation Burden. Recent Pat Anticancer Drug Discov 2024; 19:666-680. [PMID: 37691229 DOI: 10.2174/1574892819666230907145036] [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: 05/27/2023] [Revised: 08/08/2023] [Accepted: 08/23/2023] [Indexed: 09/12/2023]
Abstract
BACKGROUND Gastric cancer (GC) is a common gastrointestinal tumor with high morbidity and mortality. Fatty acid metabolism (FAM) contributes to GC development. Patents have been issued for the use of compositions comprising fatty acid analogues for the treatment of many clinical conditions. However, its clinical significance and its relationship with tumor-related mutations have not been thoroughly discovered. This study was conducted to analyze and explore FAM-related genes' molecular characteristics, prognostic significance, and association with tumor- related mutations. METHODS The gastric adenocarcinoma's transcriptome, clinical data, and tumor mutation load (TMB) data were downloaded from TCGA and GEO databases. The differentially expressed FAM genes (FAM DEGs) between cancer and control samples were screened, and their correlation with TMB and survival was analyzed. A PPI network of FAM DEGs was constructed, and a downscaling clustering analysis was performed based on the expression of the FAM DEGs. Further immuno- infiltration and GO/KEGG enrichment analyses of the identified FAM clusters were performed to explore their heterogeneity in biological functions. The effects of FAM score and gastric cancer (STAD) on TMB, MSI, survival prognosis, and drug sensitivity were jointly analyzed, and finally, a single-gene analysis of the obtained core targets was performed. RESULTS Through differential analysis, 68 FAM DEGs were obtained, and they were highly associated with STAD tumor mutation load. In addition, a high FAM DEGs CNV rate was observed. The PPI network showed a complex mutual correlation between the FAM DEGs. Consensus clustering classified the patients into three clusters based on the FAM DEGs, and the clusters presented different survival rates. The GSVA and immune infiltration analysis revealed that metabolism, apoptosis, and immune infiltration-related pathways were variated. In addition, FAM genes, STAD prognostic risk genes, and PCA scores were closely associated with the survival status of STAD patients. FAM score was closely correlated with STAD TMB, MSI, and immunotherapy, and the TMB values in the low FAM score group were significantly higher than those in the high FAM score group. Finally, combining the above results, it was found that the core gene PTGS1 performed best in predicting STAD survival prognosis and TMB/MSI/immunotherapy. CONCLUSION Fatty acid metabolism genes affect the development of gastric adenocarcinoma and can predict the survival prognosis, tumor mutational load characteristics, and drug therapy sensitivity of STAD patients, which can help explore more effective immunotherapy targets for GC.
Collapse
Affiliation(s)
- Zhengwei Chen
- Department of Gastrointestinal Surgery, Lishui City People's Hospital, Lishui, Zhejiang, 323000, China
| | - Guoxiong Cheng
- Department of Gastrointestinal Surgery, Lishui City People's Hospital, Lishui, Zhejiang, 323000, China
| |
Collapse
|
3
|
Mia MAR, Dey D, Sakib MR, Biswas MY, Prottay AAS, Paul N, Rimti FH, Abdullah Y, Biswas P, Iftehimul M, Paul P, Sarkar C, El-Nashar HAS, El-Shazly M, Islam MT. The efficacy of natural bioactive compounds against prostate cancer: Molecular targets and synergistic activities. Phytother Res 2023; 37:5724-5754. [PMID: 37786304 DOI: 10.1002/ptr.8017] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/17/2023] [Accepted: 09/05/2023] [Indexed: 10/04/2023]
Abstract
Globally, prostate cancer (PCa) is regarded as a challenging health issue, and the number of PCa patients continues to rise despite the availability of effective treatments in recent decades. The current therapy with chemotherapeutic drugs has been largely ineffective due to multidrug resistance and the conventional treatment has restricted drug accessibility to malignant tissues, necessitating a higher dosage resulting in increased cytotoxicity. Plant-derived bioactive compounds have recently attracted a great deal of attention in the field of PCa treatment due to their potent effects on several molecular targets and synergistic effects with anti-PCa drugs. This review emphasizes the molecular mechanism of phytochemicals on PCa cells, the synergistic effects of compound-drug interactions, and stem cell targeting for PCa treatment. Some potential compounds, such as curcumin, phenethyl-isothiocyanate, fisetin, baicalein, berberine, lutein, and many others, exert an anti-PCa effect via inhibiting proliferation, metastasis, cell cycle progression, and normal apoptosis pathways. In addition, multiple studies have demonstrated that the isolated natural compounds: d-limonene, paeonol, lanreotide, artesunate, and bicalutamide have potential synergistic effects. Further, a significant number of natural compounds effectively target PCa stem cells. However, further high-quality studies are needed to firmly establish the clinical efficacy of these phytochemicals against PCa.
Collapse
Affiliation(s)
- Md Abdur Rashid Mia
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | - Dipta Dey
- Department of Biochemistry and Molecular Biology, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalgonj, Bangladesh
| | - Musfiqur Rahman Sakib
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalgonj, Bangladesh
| | - Md Yeaman Biswas
- Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology (JUST), Jashore, Bangladesh
| | - Abdullah Al Shamsh Prottay
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalgonj, Bangladesh
| | - Niloy Paul
- Department of Biochemistry and Molecular Biology, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalgonj, Bangladesh
| | - Fahmida Hoque Rimti
- Bachelor of Medicine and Surgery, Chittagong Medical College, Chawkbazar, Bangladesh
| | - Yusuf Abdullah
- Department of Biochemistry and Molecular Biology, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalgonj, Bangladesh
| | - Partha Biswas
- Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology (JUST), Jashore, Bangladesh
| | - Md Iftehimul
- Department of Fisheries and Marine Bioscience, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalgonj, Bangladesh
| | - Priyanka Paul
- Department of Biochemistry and Molecular Biology, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalgonj, Bangladesh
| | - Chandan Sarkar
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalgonj, Bangladesh
| | - Heba A S El-Nashar
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Mohamed El-Shazly
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Muhammad Torequl Islam
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalgonj, Bangladesh
| |
Collapse
|
4
|
Shen C, Chen Z, Jiang J, Zhang Y, Chen X, Xu W, Peng R, Zuo W, Jiang Q, Fan Y, Fang X, Zheng B. Identification and validation of fatty acid metabolism-related lncRNA signatures as a novel prognostic model for clear cell renal cell carcinoma. Sci Rep 2023; 13:7043. [PMID: 37120692 PMCID: PMC10148808 DOI: 10.1038/s41598-023-34027-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 04/22/2023] [Indexed: 05/01/2023] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is a main subtype of renal cancer, and advanced ccRCC frequently has poor prognosis. Many studies have found that lipid metabolism influences tumor development and treatment. This study was to examine the prognostic and functional significance of genes associated with lipid metabolism in individuals with ccRCC. Using the database TCGA, differentially expressed genes (DEGs) associated with fatty acid metabolism (FAM) were identified. Prognostic risk score models for genes related to FAM were created using univariate and least absolute shrinkage and selection operator (LASSO) Cox regression analyses. Our findings demonstrate that the prognosis of patients with ccRCC correlate highly with the profiles of FAM-related lncRNAs (AC009166.1, LINC00605, LINC01615, HOXA-AS2, AC103706.1, AC009686.2, AL590094.1, AC093278.2). The prognostic signature can serve as an independent predictive predictor for patients with ccRCC. The predictive signature's diagnostic effectiveness was superior to individual clinicopathological factors. Between the low- and high-risk groups, immunity research revealed a startling difference in terms of cells, function, and checkpoint scores. Chemotherapeutic medications such lapatinib, AZD8055, and WIKI4 had better outcomes for patients in the high-risk group. Overall, the predictive signature can help with clinical selection of immunotherapeutic regimens and chemotherapeutic drugs, improving prognosis prediction for ccRCC patients.
Collapse
Affiliation(s)
- Cheng Shen
- Department of Urology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, China
- Medical Research Center, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Zhan Chen
- Department of Urology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, China
- Medical Research Center, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Jie Jiang
- Department of Urology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, China
- Medical Research Center, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Yong Zhang
- Department of Urology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, China
- Medical Research Center, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Xinfeng Chen
- Department of Urology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Wei Xu
- Department of Urology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, China
- Medical Research Center, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Rui Peng
- Department of Urology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, China
- Medical Research Center, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Wenjing Zuo
- Department of Orthopedics, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Qian Jiang
- Department of Paediatric, Chinese Medicine Hospital of Rudong, Nantong, China
| | - Yihui Fan
- Department of Pathogenic Biology, School of Medicine, Nantong University, Nantong, China
| | - Xingxing Fang
- Department of Nephrology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, China.
| | - Bing Zheng
- Department of Urology, The Second Affiliated Hospital of Nantong University, Nantong, 226001, China.
| |
Collapse
|
5
|
Shi F, Wu L, Cui D, Sun M, Shen Y, Zhou Z, Deng Z, Han B, Xia S, Zhu Z, Sun F. LncFALEC recruits ART5/PARP1 and promotes castration-resistant prostate cancer through enhancing PARP1-meditated self PARylation. Cell Oncol (Dordr) 2023; 46:761-776. [PMID: 36913068 DOI: 10.1007/s13402-023-00783-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2023] [Indexed: 03/14/2023] Open
Abstract
Accumulating evidence indicates that long noncoding RNAs (lncRNAs) are abnormal expression in various malignant tumors. Our previous research demonstrated that focally amplified long non-coding RNA (lncRNA) on chromosome 1 (FALEC) is an oncogenic lncRNA in prostate cancer (PCa). However, the role of FALEC in castration-resistant prostate cancer (CRPC) is poorly understood. In this study, we showed FALEC was upregulated in post-castration tissues and CRPC cells, and increased FALEC expression was associated with poor survival in post-castration PCa patients. RNA FISH demonstrated FALEC was translocated into nucleus in CRPC cells. RNA pulldown and followed Mass Spectrometry (MS) assay demonstrated FALEC directly interacted with PARP1 and loss of function assay showed FALEC depletion sensitized CRPC cells to castration treatment and restored NAD+. Specific PARP1 inhibitor AG14361 and NAD+ endogenous competitor NADP+ sensitized FALEC-deleted CRPC cells to castration treatment. FALEC increasing PARP1 meditated self PARylation through recruiting ART5 and down regulation of ART5 decreased CRPC cell viability and restored NAD+ through inhibiting PARP1meditated self PARylation in vitro. Furthermore, ART5 was indispensable for FALEC directly interaction and regulation of PARP1, loss of ART5 impaired FALEC and PARP1 associated self PARylation. In vivo, FALEC depleted combined with PARP1 inhibitor decreased CRPC cell derived tumor growth and metastasis in a model of castration treatment NOD/SCID mice. Together, these results established that FALEC may be a novel diagnostic marker for PCa progression and provides a potential new therapeutic strategy to target the FALEC/ART5/PARP1 complex in CRPC patients.
Collapse
Affiliation(s)
- Fei Shi
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, 100 Haining Road, Shanghai, 200080, China
| | - Lei Wu
- Department of Urology, Shanghai General Hospital, Nanjing Medical University, Shanghai, 200080, China
| | - Di Cui
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, 100 Haining Road, Shanghai, 200080, China.,Institute of Urology, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Menghao Sun
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, 100 Haining Road, Shanghai, 200080, China
| | - Yuanhao Shen
- School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Zheng Zhou
- Department of Urology, Shanghai General Hospital, Nanjing Medical University, Shanghai, 200080, China
| | - Zheng Deng
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, 100 Haining Road, Shanghai, 200080, China
| | - Bangmin Han
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, 100 Haining Road, Shanghai, 200080, China.,Institute of Urology, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Shujie Xia
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, 100 Haining Road, Shanghai, 200080, China.,Department of Urology, Shanghai General Hospital, Nanjing Medical University, Shanghai, 200080, China.,Institute of Urology, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Zheng Zhu
- Department of Internal Medicine, Division of Hematology/Oncology, University of California Davis, Sacramento, CA, 95817, USA.
| | - Feng Sun
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, 100 Haining Road, Shanghai, 200080, China. .,Institute of Urology, Shanghai Jiao Tong University, Shanghai, 200080, China.
| |
Collapse
|
6
|
Ren Z, Gao D, Luo Y, Song Z, Wu G, Qi N, Li A, Liu X. Identification of fatty acid metabolism-related clusters and immune infiltration features in hepatocellular carcinoma. Aging (Albany NY) 2023; 15:1496-1523. [PMID: 36881382 PMCID: PMC10042688 DOI: 10.18632/aging.204557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 02/15/2023] [Indexed: 03/08/2023]
Abstract
Hepatocellular Carcinoma (HCC) is a type of liver cancer which is characterized by inflammation-associated tumor. The unique characteristics of tumor immune microenvironment in HCC contribute to hepatocarcinogenesis. It was also clarified that aberrant fatty acid metabolism (FAM) might accelerate tumor growth and metastasis of HCC. In this study, we aimed to identify fatty acid metabolism-related clusters and establish a novel prognostic risk model in HCC. Gene expression and corresponding clinical data were searched from the Cancer Genome Atlas (TCGA) and the International Cancer Genome Consortium (ICGC) portal. From the TCGA database, by unsupervised clustering method, we determined three FAM clusters and two gene clusters with distinct clinicopathological and immune characteristics. Based on 79 prognostic genes identified from 190 differentially expressed genes (DEGs) among three FAM clusters, five prognostic DEGs (CCDC112, TRNP1, CFL1, CYB5D2, and SLC22A1) were determined to construct risk model by least absolute shrinkage and selection operator (LASSO) and multivariate cox regression analysis. Furthermore, the ICGC dataset was used to validate the model. In conclusion, the prognostic risk model constructed in this study exhibited excellent indicator performance of overall survival, clinical feature, and immune cell infiltration, which has the potential to be an effective biomarker for HCC immunotherapy.
Collapse
Affiliation(s)
- Zhixuan Ren
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
- Cancer Center, Southern Medical University, Guangzhou 510315, China
| | - Duan Gao
- Department of Pharmacy, Guilin Medical University, Guilin 541004, China
| | - Yue Luo
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
- Cancer Center, Southern Medical University, Guangzhou 510315, China
| | - Zhenghui Song
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
- Cancer Center, Southern Medical University, Guangzhou 510315, China
| | - Guojing Wu
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
- Cancer Center, Southern Medical University, Guangzhou 510315, China
| | - Na Qi
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
- Department of Pharmacy, Guilin Medical University, Guilin 541004, China
| | - Aimin Li
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
- Cancer Center, Southern Medical University, Guangzhou 510315, China
| | - Xinhui Liu
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China
- Cancer Center, Southern Medical University, Guangzhou 510315, China
| |
Collapse
|
7
|
Wang N, Bai X, Wang X, Wang D, Ma G, Zhang F, Ye J, Lu F, Ji C. A Novel Fatty Acid Metabolism-Associated Risk Model for Prognosis Prediction in Acute Myeloid Leukaemia. Curr Oncol 2023; 30:2524-2542. [PMID: 36826154 PMCID: PMC9955245 DOI: 10.3390/curroncol30020193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 02/09/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
Acute myeloid leukaemia (AML) is the most common acute leukaemia in adults, with an unfavourable outcome and a high rate of recurrence due to its heterogeneity. Dysregulation of fatty acid metabolism plays a crucial role in the development of several tumours. However, the value of fatty acid metabolism (FAM) in the progression of AML remains unclear. In this study, we obtained RNA sequencing and corresponding clinicopathological information from the TCGA and GEO databases. Univariate Cox regression analysis and subsequent LASSO Cox regression analysis were utilized to identify prognostic FAM-related genes and develop a potential prognostic risk model. Kaplan-Meier analysis was used for prognostic significances. We also performed ROC curve to illustrate that the risk model in prognostic prediction has good performance. Moreover, significant differences in immune infiltration landscape were found between high-risk and low-risk groups using ESTIMATE and CIBERSOT algorithms. In the end, differential expressed genes (DEGs) were analyzed by gene set enrichment analysis (GSEA) to preliminarily explore the possible signaling pathways related to the prognosis of FAM and AML. The results of our study may provide potential prognostic biomarkers and therapeutic targets for AML patients, which is conducive to individualized precision therapy.
Collapse
Affiliation(s)
- Nana Wang
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Xiaoran Bai
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Xinlu Wang
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Dongmei Wang
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Guangxin Ma
- Hematology and Oncology Unit, Department of Geriatrics, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Fan Zhang
- Department of Critical Care Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Jingjing Ye
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Fei Lu
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
- Correspondence: (F.L.); (C.J.)
| | - Chunyan Ji
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
- Correspondence: (F.L.); (C.J.)
| |
Collapse
|
8
|
Seven Fatty Acid Metabolism-Related Genes as Potential Biomarkers for Predicting the Prognosis and Immunotherapy Responses in Patients with Esophageal Cancer. Vaccines (Basel) 2022; 10:vaccines10101721. [PMID: 36298586 PMCID: PMC9610070 DOI: 10.3390/vaccines10101721] [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: 09/13/2022] [Revised: 10/06/2022] [Accepted: 10/13/2022] [Indexed: 11/06/2022] Open
Abstract
Background: Esophageal cancer (ESCA) is a major cause of cancer-related mortality worldwide. Altered fatty acid metabolism is a hallmark of cancer. However, studies on the roles of fatty acid metabolism-related genes (FRGs) in ESCA remain limited. Method: We identified differentially expressed FRGs (DE-FRGs). Then, the DE-FRGs prognostic model was constructed and validated using a comprehensive analysis. Moreover, the correlation between the risk model and clinical characteristics was investigated. A nomogram for predicting survival was established and evaluated. Subsequently, the difference in tumor microenvironment (TME) was compared between two risk groups. The sensitivity of key DE-FRGs to chemotherapeutic interventions and their correlation with immune cells were investigated. Finally, DEGs between two risk groups were measured and the prognostic value of key DE-FRGs in ESCA was confirmed in other databases. Results: A prognostic model was constructed based on seven selected DEG-FRGs. TNM staging and CD8+ T cells were significantly correlated with high-risk groups. Low-risk groups exhibited more infiltrated M0 macrophages, an activation of type II interferon (IFN-γ) responses, and were found to be more suitable for immunotherapy. Seven key DE-FRGs with prognostic value were found to be considerably influenced by different chemotherapy drugs. Conclusion: A prognostic model based on seven DE-FRGs may efficiently predict patient prognosis and immunotherapy response, helping to develop individualized treatment strategies in ESCA.
Collapse
|
9
|
Yu D, Feng Y, Jiang Z, Yan T, Fang K, Shi Y, Zhang J, Zhang S. The role of human antigen R (HuR) in modulating proliferation, senescence and radiosensitivity of skin cells. Exp Ther Med 2022; 24:566. [PMID: 35965840 PMCID: PMC9372994 DOI: 10.3892/etm.2022.11503] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 06/22/2022] [Indexed: 11/19/2022] Open
Abstract
The skin is the largest outermost organ of the human body. It is vulnerable to various damages, such as ionizing radiation. Exploration of proliferation, senescence and radiosensitivity of skin cells contributes to the development of medical and cosmetic countermeasures against skin aging and toward injury protection. Human antigen R (HuR) is one of the most widely studied RNA-binding proteins and serves an important role in stabilization of mRNA and regulation of the expression of the target genes. To investigate the role of HuR in modulating proliferation, senescence and radiosensitivity of skin cells, the present study performed an in vitro study using lentivirus-mediated overexpression or silencing of HuR in human keratinocyte HaCaT cells and human skin fibroblast WS1 cells. The results indicated that overexpression of HuR promoted proliferation, whereas downregulation of HuR inhibited proliferation of HaCaT and WS1 cells. Overexpression of HuR reduced apoptosis and senescence in skin cells. RNA-Seq of skin cells with HuR overexpression or knockdown identified 77 mRNAs positively or negatively correlated with HuR expression levels. In addition, silencing of HuR induced a significant increase in radiogenic reactive oxygen species after irradiation. Overexpression of HuR increased radiotolerance of HaCaT and WS1 cells. RNA immunoprecipitation coupled with RNA-Seq identified 14 mRNAs interacting with HuR upon radiation exposure. Overall, the findings of the present study illustrated the key role of HuR in modulating proliferation, senescence and radiosensitivity of skin cells providing a new therapeutic strategy for cosmetic treatments and to combat skin injury.
Collapse
Affiliation(s)
- Daojiang Yu
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Yahui Feng
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Zhiqiang Jiang
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Tao Yan
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Kai Fang
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Yuhong Shi
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Jie Zhang
- Radiation Medicine Department of Institute of Preventive Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Shuyu Zhang
- Laboratory of Radiation Medicine, West China School of Basic Medical Sciences and Forensic Medicine, Chengdu, Sichuan 610041, P.R. China
| |
Collapse
|
10
|
Zhang S, Wang K, Zhu X, Cherepanoff S, Conway RM, Madigan MC, Zhu L, Murray M, Zhou F. The unfolded protein response and the biology of uveal melanoma. Biochimie 2022; 197:9-18. [DOI: 10.1016/j.biochi.2022.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/17/2022] [Accepted: 01/25/2022] [Indexed: 11/02/2022]
|
11
|
He D, Liao S, Xiao L, Cai L, You M, He L, Huang W. Prognostic Value of a Ferroptosis-Related Gene Signature in Patients With Head and Neck Squamous Cell Carcinoma. Front Cell Dev Biol 2021; 9:739011. [PMID: 34790661 PMCID: PMC8591309 DOI: 10.3389/fcell.2021.739011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/29/2021] [Indexed: 01/31/2023] Open
Abstract
Background: Ferroptosis is an iron-dependent programmed cell death (PCD) form that plays a crucial role in tumorigenesis and might affect the antitumor effect of radiotherapy and immunotherapy. This study aimed to investigate distinct ferroptosis-related genes, their prognostic value and their relationship with immunotherapy in patients with head and neck squamous cell carcinoma (HNSCC). Methods: The differentially expressed ferroptosis-related genes in HNSCC were filtered based on multiple public databases. To avoid overfitting and improve clinical practicability, univariable, least absolute shrinkage and selection operator (LASSO) and multivariable Cox algorithms were performed to construct a prognostic risk model. Moreover, a nomogram was constructed to forecast individual prognosis. The differences in tumor mutational burden (TMB), immune infiltration and immune checkpoint genes in HNSCC patients with different prognoses were investigated. The correlation between drug sensitivity and the model was firstly analyzed by the Pearson method. Results: Ten genes related to ferroptosis were screened to construct the prognostic risk model. Kaplan-Meier (K-M) analysis showed that the prognosis of HNSCC patients in the high-risk group was significantly lower than that in the low-risk group (P < 0.001), and the area under the curve (AUC) of the 1-, 3- and 5-year receiver operating characteristic (ROC) curve increased year by year (0.665, 0.743, and 0.755). The internal and external validation further verified the accuracy of the model. Then, a nomogram was build based on the reliable model. The C-index of the nomogram was superior to a previous study (0.752 vs. 0.640), and the AUC (0.729 vs. 0.597 at 1 year, 0.828 vs. 0.706 at 3 years and 0.853 vs. 0.645 at 5 years), calibration plot and decision curve analysis (DCA) also shown the satisfactory predictive capacity. Furthermore, the TMB was revealed to be positively correlated with the risk score in HNSCC patients (R = 0.14; P < 0.01). The differences in immune infiltration and immune checkpoint genes were significant (P < 0.05). Pearson analysis showed that the relationship between the model and the sensitivity to antitumor drugs was significant (P < 0.05). Conclusion: Our findings identified potential novel therapeutic targets, providing further potential improvement in the individualized treatment of patients with HNSCC.
Collapse
Affiliation(s)
- Dongsheng He
- Department of Medical Oncology, The First Hospital of Putian, Teaching Hospital, Fujian Medical University, Putian, China
| | - Shengyin Liao
- Department of Medical Oncology, The First Hospital of Putian, Teaching Hospital, Fujian Medical University, Putian, China
| | - Linlin Xiao
- Department of Medical Oncology, The First Hospital of Putian, Teaching Hospital, Fujian Medical University, Putian, China
| | - Lifang Cai
- Department of Medical Oncology, The First Hospital of Putian, Teaching Hospital, Fujian Medical University, Putian, China
| | - Mengxing You
- Department of Medical Oncology, The First Hospital of Putian, Teaching Hospital, Fujian Medical University, Putian, China
| | - Limei He
- Department of Medical Oncology, The First Hospital of Putian, Teaching Hospital, Fujian Medical University, Putian, China
| | - Weiming Huang
- Department of Medical Oncology, The First Hospital of Putian, Teaching Hospital, Fujian Medical University, Putian, China
| |
Collapse
|
12
|
Prognostic value of fatty acid metabolism-related genes in patients with hepatocellular carcinoma. Aging (Albany NY) 2021; 13:17847-17863. [PMID: 34257161 PMCID: PMC8312438 DOI: 10.18632/aging.203288] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 06/02/2021] [Indexed: 12/17/2022]
Abstract
The deregulation of fatty acid metabolism plays a crucial role in cancer. However, the prognostic value of genes involved in the metabolism in hepatocellular carcinoma (HCC) remains largely unknown. We first constructed a multi-fatty acid metabolic gene prognostic model of HCC based on The Cancer Genome Atlas (TCGA) and further validated it using the International Cancer Genome Consortium (ICGC) database. The model was integrated with the clinical parameters, and a nomogram was built and weighted. Moreover, immune cell infiltration of the tumor microenvironment was investigated. A prognostic model was constructed using 6 selected fatty acid metabolism-related genes, and HCC patients were divided into high- and low-risk groups. Receiver operating characteristic curve (ROC) analysis, principal component analysis (PCA), and t-distributed stochastic neighbor embedding (t-SNE) analysis showed the optimal performance of the model. The concordance index (C-index), ROC curve, calibration plot and decision curve analysis (DCA) all confirmed the satisfactory predictive capacity of the nomogram. The analysis of immune cell infiltration in HCC patients revealed a correlation with different risk levels. Our findings indicate that a prognostic model based on fatty acid metabolism-related genes has superior predictive capacities, which provides the possibility for further improving the individualized treatment of patients with HCC.
Collapse
|
13
|
Small molecule inhibitors of the mitochondrial ClpXP protease possess cytostatic potential and re-sensitize chemo-resistant cancers. Sci Rep 2021; 11:11185. [PMID: 34045646 PMCID: PMC8160014 DOI: 10.1038/s41598-021-90801-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 05/17/2021] [Indexed: 12/18/2022] Open
Abstract
The human mitochondrial ClpXP protease complex (HsClpXP) has recently attracted major attention as a target for novel anti-cancer therapies. Despite its important role in disease progression, the cellular role of HsClpXP is poorly characterized and only few small molecule inhibitors have been reported. Herein, we screened previously established S. aureus ClpXP inhibitors against the related human protease complex and identified potent small molecules against human ClpXP. The hit compounds showed anti-cancer activity in a panoply of leukemia, liver and breast cancer cell lines. We found that the bacterial ClpXP inhibitor 334 impairs the electron transport chain (ETC), enhances the production of mitochondrial reactive oxygen species (mtROS) and thereby promotes protein carbonylation, aberrant proteostasis and apoptosis. In addition, 334 induces cell death in re-isolated patient-derived xenograft (PDX) leukemia cells, potentiates the effect of DNA-damaging cytostatics and re-sensitizes resistant cancers to chemotherapy in non-apoptotic doses.
Collapse
|
14
|
Lipids in the tumor microenvironment: From cancer progression to treatment. Prog Lipid Res 2020; 80:101055. [PMID: 32791170 DOI: 10.1016/j.plipres.2020.101055] [Citation(s) in RCA: 197] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 12/11/2022]
Abstract
Over the past decade, the study of metabolic abnormalities in cancer cells has risen dramatically. Cancer cells can thrive in challenging environments, be it the hypoxic and nutrient-deplete tumor microenvironment or a distant tissue following metastasis. The ways in which cancer cells utilize lipids are often influenced by the complex interactions within the tumor microenvironment and adjacent stroma. Adipocytes can be activated by cancer cells to lipolyze their triglyceride stores, delivering secreted fatty acids to cancer cells for uptake through numerous fatty acid transporters. Cancer-associated fibroblasts are also implicated in lipid secretion for cancer cell catabolism and lipid signaling leading to activation of mitogenic and migratory pathways. As these cancer-stromal interactions are exacerbated during tumor progression, fatty acids secreted into the microenvironment can impact infiltrating immune cell function and phenotype. Lipid metabolic abnormalities such as increased fatty acid oxidation and de novo lipid synthesis can provide survival advantages for the tumor to resist chemotherapeutic and radiation treatments and alleviate cellular stresses involved in the metastatic cascade. In this review, we highlight recent literature that demonstrates how lipids can shape each part of the cancer lifecycle and show that there is significant potential for therapeutic intervention surrounding lipid metabolic and signaling pathways.
Collapse
|
15
|
Zhai X, Sterea AM, El Hiani Y. Lessons from the Endoplasmic Reticulum Ca 2+ Transporters-A Cancer Connection. Cells 2020; 9:E1536. [PMID: 32599788 PMCID: PMC7349521 DOI: 10.3390/cells9061536] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 02/06/2023] Open
Abstract
Ca2+ is an integral mediator of intracellular signaling, impacting almost every aspect of cellular life. The Ca2+-conducting transporters located on the endoplasmic reticulum (ER) membrane shoulder the responsibility of constructing the global Ca2+ signaling landscape. These transporters gate the ER Ca2+ release and uptake, sculpt signaling duration and intensity, and compose the Ca2+ signaling rhythm to accommodate a plethora of biological activities. In this review, we explore the mechanisms of activation and functional regulation of ER Ca2+ transporters in the establishment of Ca2+ homeostasis. We also contextualize the aberrant alterations of these transporters in carcinogenesis, presenting Ca2+-based therapeutic interventions as a means to tackle malignancies.
Collapse
Affiliation(s)
- Xingjian Zhai
- Department of Physiology and Biophysics, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada;
| | | | - Yassine El Hiani
- Department of Physiology and Biophysics, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada;
| |
Collapse
|
16
|
Posey KL, Coustry F, Veerisetty AC, Hossain MG, Gambello MJ, Hecht JT. Novel mTORC1 Mechanism Suggests Therapeutic Targets for COMPopathies. THE AMERICAN JOURNAL OF PATHOLOGY 2019; 189:132-146. [PMID: 30553437 DOI: 10.1016/j.ajpath.2018.09.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/20/2018] [Accepted: 09/17/2018] [Indexed: 02/06/2023]
Abstract
Cartilage oligomeric matrix protein (COMP) is a large, multifunctional extracellular protein that, when mutated, is retained in the rough endoplasmic reticulum (ER). This retention elicits ER stress, inflammation, and oxidative stress, resulting in dysfunction and death of growth plate chondrocytes. While identifying the cellular pathologic mechanisms underlying the murine mutant (MT)-COMP model of pseudoachondroplasia, increased midline-1 (MID1) expression and mammalian target of rapamycin complex 1 (mTORC1) signaling was found. This novel role for MID1/mTORC1 signaling was investigated since treatments shown to repress the pathology also reduced Mid1/mTORC1. Although ER stress-inducing drugs or tumor necrosis factor α (TNFα) in rat chondrosarcoma cells increased Mid1, oxidative stress did not, establishing that ER stress- or TNFα-driven inflammation alone is sufficient to elevate MID1 expression. Since MID1 ubiquitinates protein phosphatase 2A (PP2A), a negative regulator of mTORC1, PP2A was evaluated in MT-COMP growth plate chondrocytes. PP2A was decreased, indicating de-repression of mTORC1 signaling. Rapamycin treatment in MT-COMP mice reduced mTORC1 signaling and intracellular retention of COMP, and increased proliferation, but did not change inflammatory markers IL-16 and eosinophil peroxidase. Lastly, mRNA from tuberous sclerosis-1/2-null mice brain tissue exhibiting ER stress had increased Mid1 expression, confirming the relationship between ER stress and MID1/mTORC1 signaling. These findings suggest a mechanistic link between ER stress and MID1/mTORC1 signaling that has implications extending to other conditions involving ER stress.
Collapse
Affiliation(s)
- Karen L Posey
- Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas.
| | - Francoise Coustry
- Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas
| | - Alka C Veerisetty
- Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas
| | - Mohammad G Hossain
- Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas
| | - Michael J Gambello
- Human Genetics and Pediatrics, Emory University School of Medicine, Atlanta, Georgia
| | - Jacqueline T Hecht
- Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center, Houston, Texas; School of Dentistry, University of Texas Health Science Center, Houston, Texas
| |
Collapse
|
17
|
Cancer and ER stress: Mutual crosstalk between autophagy, oxidative stress and inflammatory response. Biomed Pharmacother 2019; 118:109249. [PMID: 31351428 DOI: 10.1016/j.biopha.2019.109249] [Citation(s) in RCA: 257] [Impact Index Per Article: 51.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/17/2019] [Accepted: 07/18/2019] [Indexed: 12/20/2022] Open
Abstract
The endoplasmic reticulum (ER) acts as a moving organelle with many important cellular functions. As the ER lacks sufficient nutrients under pathological conditions leading to uncontrolled protein synthesis, aggregation of unfolded/misfolded proteins in the ER lumen causes the unfolded protein response (UPR) to be activated. Chronic ER stress produces endogenous or exogenous damage to cells and activates UPR, which leads to impaired intracellular calcium and redox homeostasis. The UPR is capable of recognizing the accumulation of unfolded proteins in the ER. The protein response enhances the ability of the ER to fold proteins and causes apoptosis when the function of the ER fails to return to normal. In different malignancies, ER stress can effectively induce the occurrence of autophagy in cells because malignant tumor cells need to re-use their organelles to maintain growth. Autophagy simultaneously counteracts ER stress-induced ER expansion and has the effect of enhancing cell viability and non-apoptotic death. Oxidative stress also affects mitochondrial function of important proteins through protein overload. Mitochondrial reactive oxygen species (ROS) are produced by calcium-enhanced ER release. The accumulation of toxic substances in ER and mitochondria in mitochondria destroys basic organelle function. It is known that sustained ER stress can also trigger an inflammatory response through the UPR pathway. Inflammatory response is thought to be associated with tumor development. This review discusses the emerging links between UPR responses and autophagy, oxidative stress, and inflammatory response signals in ER stress, as well as the potential development of targeting this multifaceted signaling pathway in various cancers.
Collapse
|
18
|
Florean C, Kim KR, Schnekenburger M, Kim HJ, Moriou C, Debitus C, Dicato M, Al-Mourabit A, Han BW, Diederich M. Synergistic AML Cell Death Induction by Marine Cytotoxin (+)-1( R), 6( S), 1'( R), 6'( S), 11( R), 17( S)-Fistularin-3 and Bcl-2 Inhibitor Venetoclax. Mar Drugs 2018; 16:md16120518. [PMID: 30572618 PMCID: PMC6316187 DOI: 10.3390/md16120518] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/13/2018] [Accepted: 12/14/2018] [Indexed: 11/23/2022] Open
Abstract
Treatment of acute myeloid leukemia (AML) patients is still hindered by resistance and relapse, resulting in an overall poor survival rate. Recently, combining specific B-cell lymphoma (Bcl)-2 inhibitors with compounds downregulating myeloid cell leukemia (Mcl)-1 has been proposed as a new effective strategy to eradicate resistant AML cells. We show here that 1(R), 6(S), 1’(R), 6’(S), 11(R), 17(S)-fistularin-3, a bromotyrosine compound of the fistularin family, isolated from the marine sponge Suberea clavata, synergizes with Bcl-2 inhibitor ABT-199 to efficiently kill Mcl-1/Bcl-2-positive AML cell lines, associated with Mcl-1 downregulation and endoplasmic reticulum stress induction. The absolute configuration of carbons 11 and 17 of the fistularin-3 stereoisomer was fully resolved in this study for the first time, showing that the fistularin we isolated from the marine sponge Subarea clavata is in fact the (+)-11(R), 17(S)-fistularin-3 stereoisomer keeping the known configuration 1(R), 6(S), 1’(R), and 6’(S) for the verongidoic acid part. Docking studies and in vitro assays confirm the potential of this family of molecules to inhibit DNA methyltransferase 1 activity.
Collapse
MESH Headings
- Animals
- Antineoplastic Combined Chemotherapy Protocols/pharmacology
- Bridged Bicyclo Compounds, Heterocyclic/administration & dosage
- Bridged Bicyclo Compounds, Heterocyclic/pharmacology
- Cell Line, Tumor
- Cell Survival/drug effects
- Drug Screening Assays, Antitumor
- Drug Synergism
- Endoplasmic Reticulum Stress/drug effects
- HL-60 Cells
- Humans
- Isoxazoles/administration & dosage
- Isoxazoles/chemistry
- Isoxazoles/isolation & purification
- Isoxazoles/pharmacology
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/pathology
- Molecular Docking Simulation
- Porifera/chemistry
- Proto-Oncogene Proteins c-bcl-2/antagonists & inhibitors
- Proto-Oncogene Proteins c-bcl-2/metabolism
- Sulfonamides/administration & dosage
- Sulfonamides/pharmacology
- Tyrosine/administration & dosage
- Tyrosine/analogs & derivatives
- Tyrosine/chemistry
- Tyrosine/isolation & purification
- Tyrosine/pharmacology
- U937 Cells
Collapse
Affiliation(s)
- Cristina Florean
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, 9, rue Edward Steichen, L-2540 Luxembourg, Luxembourg.
| | - Kyung Rok Kim
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.
| | - Michael Schnekenburger
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, 9, rue Edward Steichen, L-2540 Luxembourg, Luxembourg.
| | - Hyun-Jung Kim
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Céline Moriou
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, University of Paris-Saclay, 1, Avenue de la Terrasse, 91198 Gif-Sur-Yvette, France.
| | - Cécile Debitus
- LEMAR, IRD, UBO, CNRS, IFREMER, IUEM, 29280 Plouzané, France.
| | - Mario Dicato
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, 9, rue Edward Steichen, L-2540 Luxembourg, Luxembourg.
| | - Ali Al-Mourabit
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, University of Paris-Saclay, 1, Avenue de la Terrasse, 91198 Gif-Sur-Yvette, France.
| | - Byung Woo Han
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.
| | - Marc Diederich
- Department of Pharmacy, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.
| |
Collapse
|
19
|
Isobavachalcone Induces ROS-Mediated Apoptosis via Targeting Thioredoxin Reductase 1 in Human Prostate Cancer PC-3 Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:1915828. [PMID: 30410640 PMCID: PMC6206523 DOI: 10.1155/2018/1915828] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 07/02/2018] [Accepted: 08/01/2018] [Indexed: 02/07/2023]
Abstract
Prostate carcinoma causes a great number of deaths every year; therefore, there is an urgent need to find new drug candidates to treat advanced prostate cancer. Isobavachalcone (IBC) is the chalcone composition of Psoralea corylifolia Linn used in traditional Chinese medicine. Although IBC demonstrates potent anticancer efficacy in numerous types of human cancer cells, the cellular targets of IBC have not been fully defined. In our study, we found that IBC may induce reactive oxygen species- (ROS-) mediated apoptosis via interaction with a selenocysteine (Sec) containing the antioxidant enzyme thioredoxin reductase 1 (TrxR1), and induce lethal endoplasmic reticulum (ER) stress by inhibiting TrxR1 activity and increasing ROS levels in human prostate cancer PC-3 cells. Furthermore, we also observed that knocking down TrxR1 would sensitized cancer cells to IBC treatment. Our study provides evidence for the anticancer mechanism of IBC with TrxR1 as a potential target.
Collapse
|
20
|
Genetics and Expression Profile of the Tubulin Gene Superfamily in Breast Cancer Subtypes and Its Relation to Taxane Resistance. Cancers (Basel) 2018; 10:cancers10080274. [PMID: 30126203 PMCID: PMC6116153 DOI: 10.3390/cancers10080274] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/13/2018] [Accepted: 08/16/2018] [Indexed: 01/15/2023] Open
Abstract
Taxanes are a class of chemotherapeutic agents that inhibit cell division by disrupting the mitotic spindle through the stabilization of microtubules. Most breast cancer (BC) tumors show resistance against taxanes partially due to alterations in tubulin genes. In this project we investigated tubulin isoforms in BC to explore any correlation between tubulin alterations and taxane resistance. Genetic alteration and expression profiling of 28 tubulin isoforms in 6714 BC tumor samples from 4205 BC cases were analyzed. Protein-protein, drug-protein and alterations neighbor genes in tubulin pathways were examined in the tumor samples. To study correlation between promoter activity and expression of the tubulin isoforms in BC, we analyzed the ChIP-seq enrichment of active promoter histone mark H3K4me3 and mRNA expression profile of MCF-7, ZR-75-30, SKBR-3 and MDA-MB-231 cell lines. Potential correlation between tubulin alterations and taxane resistance, were investigated by studying the expression profile of taxane-sensitive and resistant BC tumors also the MDA-MB-231 cells acquired resistance to paclitaxel. All genomic data were obtained from public databases. Results showed that TUBD1 and TUBB3 were the most frequently amplified and deleted tubulin genes in the BC tumors respectively. The interaction analysis showed physical interactions of α-, β- and γ-tubulin isoforms with each other. The most of FDA-approved tubulin inhibitor drugs including taxanes target only β-tubulins. The analysis also revealed sex tubulin-interacting neighbor proteins including ENCCT3, NEK2, PFDN2, PTP4A3, SDCCAG8 and TBCE which were altered in at least 20% of the tumors. Three of them are tubulin-specific chaperons responsible for tubulin protein folding. Expression of tubulin genes in BC cell lines were correlated with H3K4me3 enrichment on their promoter chromatin. Analyzing expression profile of BC tumors and tumor-adjacent normal breast tissues showed upregulation of TUBA1A, TUBA1C, TUBB and TUBB3 and downregulation of TUBB2A, TUBB2B, TUBB6, TUBB7P pseudogene, and TUBGCP2 in the tumor tissues compared to the normal breast tissues. Analyzing taxane-sensitive versus taxane-resistant tumors revealed that expression of TUBB3 and TUBB6 was significantly downregulated in the taxane-resistant tumors. Our results suggest that downregulation of tumor βIII- and βV-tubulins is correlated with taxane resistance in BC. Based on our results, we conclude that aberrant protein folding of tubulins due to mutation and/or dysfunction of tubulin-specific chaperons may be potential mechanisms of taxane resistance. Thus, we propose studying the molecular pathology of tubulin mutations and folding in BC and their impacts on taxane resistance.
Collapse
|
21
|
Genetics and Expression Profile of the Tubulin Gene Superfamily in Breast Cancer Subtypes and Its Relation to Taxane Resistance. Cancers (Basel) 2018. [DOI: 10.10.3390/cancers10080274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Taxanes are a class of chemotherapeutic agents that inhibit cell division by disrupting the mitotic spindle through the stabilization of microtubules. Most breast cancer (BC) tumors show resistance against taxanes partially due to alterations in tubulin genes. In this project we investigated tubulin isoforms in BC to explore any correlation between tubulin alterations and taxane resistance. Genetic alteration and expression profiling of 28 tubulin isoforms in 6714 BC tumor samples from 4205 BC cases were analyzed. Protein-protein, drug-protein and alterations neighbor genes in tubulin pathways were examined in the tumor samples. To study correlation between promoter activity and expression of the tubulin isoforms in BC, we analyzed the ChIP-seq enrichment of active promoter histone mark H3K4me3 and mRNA expression profile of MCF-7, ZR-75-30, SKBR-3 and MDA-MB-231 cell lines. Potential correlation between tubulin alterations and taxane resistance, were investigated by studying the expression profile of taxane-sensitive and resistant BC tumors also the MDA-MB-231 cells acquired resistance to paclitaxel. All genomic data were obtained from public databases. Results showed that TUBD1 and TUBB3 were the most frequently amplified and deleted tubulin genes in the BC tumors respectively. The interaction analysis showed physical interactions of α-, β- and γ-tubulin isoforms with each other. The most of FDA-approved tubulin inhibitor drugs including taxanes target only β-tubulins. The analysis also revealed sex tubulin-interacting neighbor proteins including ENCCT3, NEK2, PFDN2, PTP4A3, SDCCAG8 and TBCE which were altered in at least 20% of the tumors. Three of them are tubulin-specific chaperons responsible for tubulin protein folding. Expression of tubulin genes in BC cell lines were correlated with H3K4me3 enrichment on their promoter chromatin. Analyzing expression profile of BC tumors and tumor-adjacent normal breast tissues showed upregulation of TUBA1A, TUBA1C, TUBB and TUBB3 and downregulation of TUBB2A, TUBB2B, TUBB6, TUBB7P pseudogene, and TUBGCP2 in the tumor tissues compared to the normal breast tissues. Analyzing taxane-sensitive versus taxane-resistant tumors revealed that expression of TUBB3 and TUBB6 was significantly downregulated in the taxane-resistant tumors. Our results suggest that downregulation of tumor βIII- and βV-tubulins is correlated with taxane resistance in BC. Based on our results, we conclude that aberrant protein folding of tubulins due to mutation and/or dysfunction of tubulin-specific chaperons may be potential mechanisms of taxane resistance. Thus, we propose studying the molecular pathology of tubulin mutations and folding in BC and their impacts on taxane resistance.
Collapse
|
22
|
Ozfiliz-Kilbas P, Sarikaya B, Obakan-Yerlikaya P, Coker-Gurkan A, Arisan ED, Temizci B, Palavan-Unsal N. Cyclin-dependent kinase inhibitors, roscovitine and purvalanol, induce apoptosis and autophagy related to unfolded protein response in HeLa cervical cancer cells. Mol Biol Rep 2018; 45:815-828. [PMID: 29978381 DOI: 10.1007/s11033-018-4222-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 06/25/2018] [Indexed: 12/11/2022]
Abstract
Roscovitine (Rosc) and purvalanol (Pur) are competitive inhibitors of cyclin-dependent kinases (CDKs) by targeting their ATP-binding pockets. Both drugs are shown to be effective to decrease cell viability and dysregulate the ratio of pro- and anti-apoptotic Bcl-2 family members, which finally led to apoptotic cell death in different cancer cell lines in vitro. It was well established that Bcl-2 family members have distinct roles in the regulation of other cellular processes such as endoplasmic reticulum (ER) stress. The induction of ER stress has been shown to play critical role in cell death/survival decision via autophagy or apoptosis. In this study, our aim was to investigate the molecular targets of CDK inhibitors on ER stress mechanism related to distinct cell death types in time-dependent manner in HeLa cervical cancer cells. Our results showed that Rosc and Pur decreased the cell viability, cell growth and colony formation, induced ER stress-mediated autophagy or apoptosis in time-dependent manner. Thus, we conclude that exposure of cells to CDK inhibitors induces unfolded protein response and ER stress leading to autophagy and apoptosis processes in HeLa cervical cancer cells.
Collapse
Affiliation(s)
- Pelin Ozfiliz-Kilbas
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Bahar Sarikaya
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Pinar Obakan-Yerlikaya
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Atakoy Campus, 34156, Istanbul, Turkey.
| | - Ajda Coker-Gurkan
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Elif Damla Arisan
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Benan Temizci
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Atakoy Campus, 34156, Istanbul, Turkey
| | - Narcin Palavan-Unsal
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Atakoy Campus, 34156, Istanbul, Turkey
| |
Collapse
|
23
|
Tadros S, Shukla SK, King RJ, Gunda V, Vernucci E, Abrego J, Chaika NV, Yu F, Lazenby AJ, Berim L, Grem J, Sasson AR, Singh PK. De Novo Lipid Synthesis Facilitates Gemcitabine Resistance through Endoplasmic Reticulum Stress in Pancreatic Cancer. Cancer Res 2017; 77:5503-5517. [PMID: 28811332 DOI: 10.1158/0008-5472.can-16-3062] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 05/15/2017] [Accepted: 08/08/2017] [Indexed: 12/24/2022]
Abstract
Pancreatic adenocarcinoma is moderately responsive to gemcitabine-based chemotherapy, the most widely used single-agent therapy for pancreatic cancer. Although the prognosis in pancreatic cancer remains grim in part due to poor response to therapy, previous attempts at identifying and targeting the resistance mechanisms have not been very successful. By leveraging The Cancer Genome Atlas dataset, we identified lipid metabolism as the metabolic pathway that most significantly correlated with poor gemcitabine response in pancreatic cancer patients. Furthermore, we investigated the relationship between alterations in lipogenesis pathway and gemcitabine resistance by utilizing tissues from the genetically engineered mouse model and human pancreatic cancer patients. We observed a significant increase in fatty acid synthase (FASN) expression with increasing disease progression in spontaneous pancreatic cancer mouse model, and a correlation of high FASN expression with poor survival in patients and poor gemcitabine responsiveness in cell lines. We observed a synergistic effect of FASN inhibitors with gemcitabine in pancreatic cancer cells in culture and orthotopic implantation models. Combination of gemcitabine and the FASN inhibitor orlistat significantly diminished stemness, in part due to induction of endoplasmic reticulum (ER) stress that resulted in apoptosis. Moreover, direct induction of ER stress with thapsigargin caused a similar decrease in stemness and showed synergistic activity with gemcitabine. Our in vivo studies with orthotopic implantation models demonstrated a robust increase in gemcitabine responsiveness upon inhibition of fatty acid biosynthesis with orlistat. Altogether, we demonstrate that fatty acid biosynthesis pathway manipulation can help overcome the gemcitabine resistance in pancreatic cancer by regulating ER stress and stemness. Cancer Res; 77(20); 5503-17. ©2017 AACR.
Collapse
Affiliation(s)
- Saber Tadros
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska
| | - Surendra K Shukla
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska
| | - Ryan J King
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska
| | - Venugopal Gunda
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska
| | - Enza Vernucci
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska
| | - Jaime Abrego
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska
| | - Nina V Chaika
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska
| | - Fang Yu
- Department of Biostatistics, University of Nebraska Medical Center, Omaha, Nebraska
| | - Audrey J Lazenby
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Lyudmyla Berim
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Jean Grem
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Aaron R Sasson
- Division of Surgical Oncology, Department of Surgery, Stony Brook Cancer Center, Stony Brook, New York
| | - Pankaj K Singh
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska. .,Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska.,Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska.,Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska
| |
Collapse
|
24
|
Duivenvoorden WCM, Hopmans SN, Austin RC, Pinthus JH. Endoplasmic reticulum protein ERp46 in prostate adenocarcinoma. Oncol Lett 2017; 13:3624-3630. [PMID: 28521463 PMCID: PMC5431273 DOI: 10.3892/ol.2017.5908] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 01/31/2017] [Indexed: 11/23/2022] Open
Abstract
Endoplasmic reticulum (ER) protein ERp46 is a member of the protein disulfide isomerase family of oxidoreductases, which facilitates the reduction of disulfides in proteins and their folding. Accumulation of misfolded proteins has been implicated in cancer. The objectives of the present study were to investigate the role of ERp46 in prostate cancer, its expression and its effects on prostate cancer growth. A tissue microarray with human prostate cancer and normal prostate tissue samples was stained for ERp46 followed by image analysis. Human prostate adenocarcinoma 22Rv1 cells were stably transfected with short hairpin RNA (shRNA) specific for ERp46, a non-effective scrambled control or a plasmid containing full-length human ERp46 cDNA, and cell growth was determined. Subcloned cells were treated with thapsigargin or tunicamycin to induce ER stress and lysates were subjected to western blot analysis for ER stress proteins. Subcutaneous xenografts of parental 22Rv1, ERp46-overexpressing (ERp46+), shERp46 or scrambled control cells were established in male inbred BALB/c nude mice (n=10/group). Tumor growth curves of the xenografts were constructed over a period of 30 days and subsequently the mice were sacrificed and the amount of serum prostate-specific antigen was determined. The results demonstrated increased ERp46 expression levels in prostate cancer tissue samples of Gleason ≥7 compared with normal prostate tissue samples. When ERp46 was stably knocked down using shRNA or overexpressed in prostate carcinoma 22Rv1 cells, tumor growth in vitro and in BALB/c nude mice was inhibited and accelerated, respectively. ERp46 overexpression led to reduced sensitivity to ER stress as indicated by higher half maximal inhibitory concentrations for tunicamycin and thapsigargin in ERp46+ cells. The shERp46 cells lost the ability to upregulate protein disulfide isomerase following tunicamycin-induced ER stress. The present study suggests a role for ERp46 as a therapeutic target in prostate cancer, given its expression profile in human prostate cancer, and its effect on prostate cancer cell growth.
Collapse
Affiliation(s)
- Wilhelmina C M Duivenvoorden
- Department of Surgery, Division of Urology, McMaster University, Hamilton, ON L8V 1C3, Canada.,Research Institute of St. Joseph's, St. Joseph's Healthcare, Hamilton, ON L8N 4A6, Canada
| | - Sarah N Hopmans
- Department of Surgery, Division of Urology, McMaster University, Hamilton, ON L8V 1C3, Canada
| | - Richard C Austin
- Research Institute of St. Joseph's, St. Joseph's Healthcare, Hamilton, ON L8N 4A6, Canada.,Department of Medicine, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Jehonathan H Pinthus
- Department of Surgery, Division of Urology, McMaster University, Hamilton, ON L8V 1C3, Canada.,Research Institute of St. Joseph's, St. Joseph's Healthcare, Hamilton, ON L8N 4A6, Canada
| |
Collapse
|
25
|
Obakan-Yerlikaya P, Arisan ED, Coker-Gurkan A, Adacan K, Ozbey U, Somuncu B, Baran D, Palavan-Unsal N. Calreticulin is a fine tuning molecule in epibrassinolide-induced apoptosis through activating endoplasmic reticulum stress in colon cancer cells. Mol Carcinog 2017; 56:1603-1619. [PMID: 28112451 DOI: 10.1002/mc.22616] [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: 08/25/2016] [Revised: 12/29/2016] [Accepted: 01/20/2017] [Indexed: 12/26/2022]
Abstract
Epibrassinolide (EBR), a member of brassinostreoids plant hormones with cell proliferation promoting role in plants, is a natural polyhydroxysteroid with structural similarity to steroid hormones of vertebrates. EBR has antiproliferative and apoptosis-inducing effect in various cancer cells. Although EBR has been shown to affect survival and mitochondria-mediated apoptosis pathways in a p53-independent manner, the exact molecular targets of EBR are still under investigation. Our recent SILAC (Stable Isotope Labeling by Amino Acids in Cell Culture) data showed that the most significantly altered protein after EBR treatment was calreticulin (CALR). CALR, a chaperone localized in endoplasmic reticulum (ER) lumen, plays role in protein folding and buffering Ca2+ ions. The alteration of CALR may cause ER stress and unfolded protein response correspondingly the induction of apoptosis. Unfolded proteins are conducted to 26S proteasomal degradation following ubiquitination. Our study revealed that EBR treatment caused ER stress and UPR by altering CALR expression causing caspase-dependent apoptosis in HCT 116, HT29, DLD-1, and SW480 colon cancer cells. Furthermore, 48 h EBR treatment did not caused UPR in Fetal Human Colon cells (FHC) and Mouse Embryonic Fibroblast cells (MEF). In addition our findings showed that HCT 116 colon cancer cells lacking Bax and Puma expression still undergo UPR and related apoptosis. CALR silencing and rapamycin co-treatment prevented EBR-induced UPR and apoptosis, whereas 26S proteasome inhibition further increased the effect of EBR in colon cancer cells. All these findings showed that EBR is an ER stress and apoptotic inducer in colon cancer cells without affecting non-malignant cells.
Collapse
Affiliation(s)
- Pinar Obakan-Yerlikaya
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Ataköy Campus, Istanbul, Turkey
| | - Elif Damla Arisan
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Ataköy Campus, Istanbul, Turkey
| | - Ajda Coker-Gurkan
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Ataköy Campus, Istanbul, Turkey
| | - Kaan Adacan
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Ataköy Campus, Istanbul, Turkey
| | - Utku Ozbey
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Ataköy Campus, Istanbul, Turkey
| | - Berna Somuncu
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Ataköy Campus, Istanbul, Turkey
| | - Didem Baran
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Ataköy Campus, Istanbul, Turkey
| | - Narcin Palavan-Unsal
- Department of Molecular Biology and Genetics, Istanbul Kultur University, Ataköy Campus, Istanbul, Turkey
| |
Collapse
|
26
|
Mehta M, Branford OA, Rolfe KJ. The evidence for natural therapeutics as potential anti-scarring agents in burn-related scarring. BURNS & TRAUMA 2016; 4:15. [PMID: 27574685 PMCID: PMC4964041 DOI: 10.1186/s41038-016-0040-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 04/12/2016] [Indexed: 02/07/2023]
Abstract
Though survival rate following severe thermal injuries has improved, the incidence and treatment of scarring have not improved at the same speed. This review discusses the formation of scars and in particular the formation of hypertrophic scars. Further, though there is as yet no gold standard treatment for the prevention or treatment of scarring, a brief overview is included. A number of natural therapeutics have shown beneficial effects both in vivo and in vitro with the potential of becoming clinical therapeutics in the future. These natural therapeutics include both plant-based products such as resveratrol, quercetin and epigallocatechin gallate as examples and includes the non-plant-based therapeutic honey. The review also includes potential mechanism of action for the therapeutics, any recorded adverse events and current administration of the therapeutics used. This review discusses a number of potential 'treatments' that may reduce or even prevent scarring particularly hypertrophic scarring, which is associated with thermal injuries without compromising wound repair.
Collapse
Affiliation(s)
- M. Mehta
- British College of Osteopathic Medicine (BCOM), Finchley Road, London, NW3 5HR UK
| | - O. A. Branford
- The Royal Marsden Hospital, Fulham Rd, London, SW3 6JJ UK
| | - K. J. Rolfe
- British College of Osteopathic Medicine (BCOM), Finchley Road, London, NW3 5HR UK
| |
Collapse
|
27
|
Vlachostergios PJ, Balmiki RL, Daya R. GRP78 and α2-macroglobulin are new promising targets for metastatic castrate-resistant prostate cancer treatment. Clin Transl Oncol 2015; 17:932-4. [DOI: 10.1007/s12094-015-1324-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Accepted: 06/05/2015] [Indexed: 10/23/2022]
|
28
|
Yan J, Wang Y, Zhang X, Liu S, Tian C, Wang H. Targeted nanomedicine for prostate cancer therapy: docetaxel and curcumin co-encapsulated lipid-polymer hybrid nanoparticles for the enhanced anti-tumor activity in vitro and in vivo. Drug Deliv 2015. [PMID: 26203689 DOI: 10.3109/10717544.2015.1069423] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVE Docetaxel (DTX) remains the only effective drug for prolonging survival and improving quality of life of metastatic castration-resistant prostate cancer (mCRPC) patients. Combination anticancer therapy encapsulating DTX and another extract of traditional Chinese medicine is one nano-sized drug delivery system promising to generate synergistic anticancer effects, to maximize the treatment effect, and to overcome multi-drug resistance. The purpose of this study is to construct lipid-polymer hybrid nanoparticles (LPNs) as nanomedicine for co-encapsulation of DTX and curcumin (CUR). METHODS DTX and CUR co-encapsulated LPNs (DTX-CUR-LPNs) were constructed. DTX-CUR-LPNs were evaluated in terms of particles size, zeta potential, drug encapsulation, and drug delivery. The cytotoxicity of the LPNs was evaluated on PC-3 human prostate carcinoma cells (PC3 cells) by MTT assays. In vivo anti-tumor effects were observed on the PC3 tumor xenografts in mice. RESULTS The particle size of DTX-CUR-LPNs was 169.6 nm with a positive zeta potential of 35.7 mV. DTX-CUR-LPNs showed highest cytotoxicity and synergistic effect of two drugs in tumor cells in vitro. In mice-bearing PC-3 tumor xenografts, the DTX-CUR-LPNs inhibited tumor growth to a greater extent than other contrast groups, without inducing any obvious side effects. CONCLUSION According to these results, the novel nanomedicine offers great promise for the dual drugs delivery to the prostate cancer cells, showing the potential of synergistic combination therapy for prostate cancer.
Collapse
Affiliation(s)
- Jieke Yan
- a Department of Renal Transplantation , The Second Hospital of Shandong University , Ji'nan , Shandong , PR China and
| | - Yuzhen Wang
- b Clinical Department , Jinan Vocation College of Nursing , Ji'nan , Shandong , PR China
| | - Xufeng Zhang
- a Department of Renal Transplantation , The Second Hospital of Shandong University , Ji'nan , Shandong , PR China and
| | - Shuangde Liu
- a Department of Renal Transplantation , The Second Hospital of Shandong University , Ji'nan , Shandong , PR China and
| | - Chuan Tian
- a Department of Renal Transplantation , The Second Hospital of Shandong University , Ji'nan , Shandong , PR China and
| | - Hongwei Wang
- a Department of Renal Transplantation , The Second Hospital of Shandong University , Ji'nan , Shandong , PR China and
| |
Collapse
|
29
|
Gara RK, Srivastava VK, Duggal S, Bagga JK, Bhatt M, Sanyal S, Mishra DP. Shikonin selectively induces apoptosis in human prostate cancer cells through the endoplasmic reticulum stress and mitochondrial apoptotic pathway. J Biomed Sci 2015; 22:26. [PMID: 25879420 PMCID: PMC4389804 DOI: 10.1186/s12929-015-0127-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Accepted: 03/06/2015] [Indexed: 12/12/2022] Open
Abstract
Background Despite the recent progress in screening and therapy, a majority of prostate cancer cases eventually attain hormone refractory and chemo-resistant attributes. Conventional chemotherapeutic strategies are effective at very high doses for only palliative management of these prostate cancers. Therefore chemo-sensitization of prostate cancer cells could be a promising strategy for increasing efficacy of the conventional chemotherapeutic agents in prostate cancer patients. Recent studies have indicated that the chemo-preventive natural agents restore the pro-apoptotic protein expression and induce endoplasmic reticulum stress (ER stress) leading to the inhibition of cellular proliferation and activation of the mitochondrial apoptosis in prostate cancer cells. Therefore reprogramming ER stress-mitochondrial dependent apoptosis could be a potential approach for management of hormone refractory chemoresistant prostate cancers. We aimed to study the effects of the natural naphthoquinone Shikonin in human prostate cancer cells. Results The results indicated that Shikonin induces apoptosis in prostate cancer cells through the dual induction of the endoplasmic reticulum stress and mitochondrial dysfunction. Shikonin induced ROS generation and activated ER stress and calpain activity. Moreover, addition of antioxidants attenuated these effects. Shikonin also induced the mitochondrial apoptotic pathway mediated through the enhanced expression of the pro-apoptotic Bax and inhibition of Bcl-2, disruption of the mitochondrial membrane potential (MMP) followed by the activation of caspase-9, caspase-3, and PARP cleavage. Conclusion The results suggest that shikonin could be useful in the therapeutic management of hormone refractory prostate cancers due to its modulation of the pro-apoptotic ER stress and mitochondrial apoptotic pathways. Electronic supplementary material The online version of this article (doi:10.1186/s12929-015-0127-1) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Rishi Kumar Gara
- Cell Death Research Laboratory, Endocrinology Division CSIR-Central Drug Research Institute, Lucknow, 226031, India. .,Center for Cancer Research, UTHSC, Memphis, TN, USA.
| | | | - Shivali Duggal
- Department of Radiotherapy, King George Medical University, Lucknow, 226003, India.
| | - Jaspreet Kaur Bagga
- Cell Death Research Laboratory, Endocrinology Division CSIR-Central Drug Research Institute, Lucknow, 226031, India.
| | - Mlb Bhatt
- Department of Radiotherapy, King George Medical University, Lucknow, 226003, India.
| | - Sabyasachi Sanyal
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow, 226031, India.
| | - Durga Prasad Mishra
- Cell Death Research Laboratory, Endocrinology Division CSIR-Central Drug Research Institute, Lucknow, 226031, India.
| |
Collapse
|
30
|
Seong YA, Shin PG, Yoon JS, Yadunandam AK, Kim GD. Induction of the endoplasmic reticulum stress and autophagy in human lung carcinoma A549 cells by anacardic acid. Cell Biochem Biophys 2014; 68:369-77. [PMID: 23955513 DOI: 10.1007/s12013-013-9717-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Anacardic acid (AA, 2-hydroxy-6-pentadecylbenzoic acid), a constituent of the cashew-nut shell, has a variety of beneficial effects on the treatment of cancer and tumors. However, the fact that AA induces ER stress and autophagy in cancer cell is not known. We investigated the effect of AA on ER-stress and autophagy-induced cell death in cancer cells. Because of our interest in lung cancer, we used the non-small cell lung adenocarcinoma A549 cells treated with 3.0 μg/ml of AA for this research. In this research we found that AA induces intracellular Ca(2+) mobilization and ER stress. AA induced the ER stress-inducing factors, especially IRE1α, and the hallmarks of UPR, Grp78/Bip and GADD153/CHOP. AA inhibited the expression of p-PERK and its downstream substrate, p-elF2α. We also demonstrated that AA induces autophagy. Up-regulation of autophagy-related genes and the appearance of autophagosome in transfected cells with green fluorescent protein (GFP)-LC3 and GFP-Beclin1 plasmids showed the induction of autophagy in AA-treated A549 cells. The morphological analysis of intracellular organelles by TEM also showed the evidence that AA induces ER stress and autophagy. For the first time, our research showed that AA induces ER stress and autophagy in cancer cells.
Collapse
Affiliation(s)
- Yeong-Ae Seong
- Department of Microbiology, College of Natural Sciences, Pukyong National University, 45, Yongso-ro, Nam-Gu, Busan, 608-737, Korea
| | | | | | | | | |
Collapse
|
31
|
Xu L, Liu JH, Zhang J, Zhang N, Wang ZH. Blockade of autophagy aggravates endoplasmic reticulum stress and improves Paclitaxel cytotoxicity in human cervical cancer cells. Cancer Res Treat 2014; 47:313-21. [PMID: 25578058 PMCID: PMC4398113 DOI: 10.4143/crt.2013.222] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 02/21/2014] [Indexed: 12/11/2022] Open
Abstract
Purpose Autophagy is one of the ways to degrade unfolded proteins after endoplasmic reticulum (ER) stress. The purpose of this study is to determine whether a blockade of autophagy leads to aggravated endoplasmic reticulum stress, which then induces cells apoptosis in HeLa cells treated with paclitaxel. Materials and Methods Autophagy activation and the proapoptotic effects were characterized using monodansylcadaverine labeling and Hoechest staining, respectively. A Western blot analysis was used to detect the expression of apoptotic and autophagy-related genes. A flow cytometry was used to assess the cell apoptosis ratio. Results Paclitaxel exposure induced the aggregation of autophagosomes in the cytoplasms of cervical cancer HeLa cells. The expression of Beclin 1 and LC3 II were upregulated, but p62 was downregulated, which suggests that autophagy was promoted by paclitaxel. On the other hand, the expression of GRP78 obviously increased, suggesting that ER stress was induced after paclitaxel treatment. The cell proliferation assay indicated that a knockdown of Beclin 1 sensitized HeLa cells to paclitaxel. Furthermore, paclitaxel-mediated apoptotic cell death was further potentiated by the pretreatment with autophagy inhibitor chloroquine or small interfering RNA against Beclin 1. These results suggest that an induction of autophagy by paclitaxel may induce cell survival rather than cell death in HeLa cells; moreover, inhibition of autophagy led to an aggravated ER stress and an induction of downstream apoptosis. Conclusion Our results reveal autophagy induced by paclitaxel conferred protection of tumor cells against apoptosis, and blockade of autophagy subsequently aggravated ER stress, enhancing the apoptosis associated with paclitaxel treatment in HeLa cells.
Collapse
Affiliation(s)
- Li Xu
- Department of Respiratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jing-Hua Liu
- Department of Respiratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jing Zhang
- Department of Obstetrics and Gynecology, The Shanxi Da Yi Hospital, Taiyuan, China
| | - Na Zhang
- Department of Obstetrics and Gynecology, The Shanxi Da Yi Hospital, Taiyuan, China
| | - Zan-Hong Wang
- Department of Obstetrics and Gynecology, The Shanxi Da Yi Hospital, Taiyuan, China
| |
Collapse
|
32
|
Mathur A, Abd Elmageed ZY, Liu X, Kostochka ML, Zhang H, Abdel-Mageed AB, Mondal D. Subverting ER-stress towards apoptosis by nelfinavir and curcumin coexposure augments docetaxel efficacy in castration resistant prostate cancer cells. PLoS One 2014; 9:e103109. [PMID: 25121735 PMCID: PMC4133210 DOI: 10.1371/journal.pone.0103109] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 06/12/2014] [Indexed: 01/07/2023] Open
Abstract
Despite its side-effects, docetaxel (DTX) remains a first-line treatment against castration resistant prostate cancer (CRPC). Therefore, strategies to increase its anti-tumor efficacy and decrease its side effects are critically needed. Targeting of the constitutive endoplasmic reticulum (ER) stress in cancer cells is being investigated as a chemosensitization approach. We hypothesized that the simultaneous induction of ER-stress and suppression of PI3K/AKT survival pathway will be a more effective approach. In a CRPC cell line, C4-2B, we observed significant (p<0.005) enhancement of DTX-induced cytotoxicity following coexposure to thapsigargin and an AKT-inhibitor. However, since these two agents are not clinically approved, we investigated whether a combination of nelfinavir (NFR) and curcumin (CUR), known to target both these metabolic pathways, can similarly increase DTX cytotoxicity in CRPC cells. Within 24 hrs post-exposure to physiologic concentrations of NFR (5 µM) and CUR (5 µM) a significantly (p<0.005) enhanced cytotoxicity was evident with low concentration of DTX (10 nM). This 3-drug combination rapidly increased apoptosis in aggressive C4-2B cells, but not in RWPE-1 cells or in primary prostate epithelial cells (PrEC). Comparative molecular studies revealed that this 3-drug combination caused a more pronounced suppression of phosphorylated-AKT and higher induction in phosphorylated-eIF2α in C4-2B cells, as compared to RWPE-1 cells. Acute exposure (3–9 hrs) to this 3-drug combination intensified ER-stress induced pro-apoptotic markers, i.e. ATF4, CHOP, and TRIB3. At much lower concentrations, chronic (3 wks) exposures to these three agents drastically reduced colony forming units (CFU) by C4-2B cells. In vivo studies using mice containing C4-2B tumor xenografts showed significant (p<0.05) enhancement of DTX’s (10 mg/kg) anti-tumor efficacy following coexposure to NFR (20 mg/kg) & CUR (100 mg/kg). Immunohistochemical (IHC) analyses of tumor sections indicated decreased Ki-67 staining and increased TUNEL intensity in mice exposed to the 3-drug combination. Therefore, subverting ER-stress towards apoptosis using adjuvant therapy with NFR and CUR can chemosensitize the CRPC cells to DTX therapy.
Collapse
Affiliation(s)
- Aditi Mathur
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States of America
| | - Zakaria Y. Abd Elmageed
- Department of Urology, Tulane University School of Medicine, New Orleans, Louisiana, United States of America
| | - Xichun Liu
- Department of Pathology, Tulane University School of Medicine, New Orleans, Louisiana, United States of America
| | - Mikhail L. Kostochka
- Peptide Research Laboratories, Tulane University School of Medicine, New Orleans, Louisiana, United States of America
| | - Haitao Zhang
- Department of Pathology, Tulane University School of Medicine, New Orleans, Louisiana, United States of America
| | - Asim B. Abdel-Mageed
- Department of Urology, Tulane University School of Medicine, New Orleans, Louisiana, United States of America
| | - Debasis Mondal
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, Louisiana, United States of America
- * E-mail:
| |
Collapse
|
33
|
Cao A, Li Q, Yin P, Dong Y, Shi H, Wang L, Ji G, Xie J, Wu D. Curcumin induces apoptosis in human gastric carcinoma AGS cells and colon carcinoma HT-29 cells through mitochondrial dysfunction and endoplasmic reticulum stress. Apoptosis 2014; 18:1391-1402. [PMID: 23881281 DOI: 10.1007/s10495-013-0871-1] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the present study, we investigate the effect of curcumin, a major active component isolated from rhizomes of Curcuma longa, on the cytotoxicity of three human carcinoma cell lines (AGS, HT-29 and MGC803) in gastrointestinal tract and a normal gastric epithelial cell line GES-1, and the mechanism of curcumin-induced apoptosis. The results indicated that curcumin inhibited the gastrointestinal carcinoma cell growth in a dose-dependent manner and cytotoxicity was more towards the gastric carcinoma cell AGS and colon carcinoma cell HT-29 compared to normal gastric cell GES-1, and increased externalization of phosphatidylserine residue was observed by Annexin V/PI staining in the two cell lines. Treatment of AGS and HT-29 cells with curcumin enhanced the cleavage of procaspase-3, -7, -8 and -9. Meanwhile, curcumin induced endoplasmic reticulum (ER) stress and mitochondrial dysfunction as evidenced by up-regulation of CCAAT/enhancer binding protein homologous protein (CHOP), phosphorylation of JNK and down-regulation of SERCA2ATPase, release of cytochrome c, decrease of Bcl-2 and reduction of mitochondrial membrane potential in both AGS and HT-29 cells. Overexpression of bax, total JNK, phospho-FADD and total FADD were also observed in curcumin-treated HT-29 cells. Moreover, curcumin decreased cytosolic and ER Ca(2+), but increased mitochondrial Ca(2+) in the two cell lines. 2-Aminoethoxydiphenyl borate, an antagonist of inositol 1, 4, 5-triphosphate receptor, partly blocked curcumin-induced cytosolic Ca(2+) decrease in AGS and HT-29 cells. Additionally, carbonyl cyanide m-chlorophenylhydrazone, an inhibitor of mitochondrial Ca(2+) uptake, reversed curcumin-triggered AGS and HT-29 cells growth inhibition. siRNA to CHOP markedly reduced curcumin-induced apoptosis. These results suggest that curcumin can impact on ER stress and mitochondria functional pathways in AGS and HT-29 cells, death receptor pathway was also involved in curcumin-treated HT-29 cells, thus identifying specific well-defined molecular mechanisms that may be targeted by therapeutic strategies.
Collapse
Affiliation(s)
- Aili Cao
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Qi Li
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200062, China
| | - Peihao Yin
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200062, China
| | - Yang Dong
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Hailian Shi
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Li Wang
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200062, China
| | - Guang Ji
- Institute of Digestive Diseases, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Jianqun Xie
- Institute of Digestive Diseases, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China.
| | - Dazheng Wu
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China. .,Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200062, China.
| |
Collapse
|
34
|
Chhipa RR, Halim D, Cheng J, Zhang HY, Mohler JL, Ip C, Wu Y. The direct inhibitory effect of dutasteride or finasteride on androgen receptor activity is cell line specific. Prostate 2013; 73:1483-94. [PMID: 23813737 PMCID: PMC3992475 DOI: 10.1002/pros.22696] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 05/15/2013] [Indexed: 01/01/2023]
Abstract
BACKGROUND Finasteride and dutasteride were developed originally as 5α-reductase inhibitors to block the conversion of testosterone to dihydrotestosterone (DHT). These drugs may possess off-target effects on the androgen receptor (AR) due to their structural similarity to DHT. METHODS A total of four human prostate cancer cell models were examined: LNCaP (T877A mutant AR), 22Rv1 (H874Y mutant AR), LAPC4 (wild-type AR), and VCaP (wild-type AR). Cells were cultured in 10% charcoal-stripped fetal bovine serum, either with or without DHT added to the medium. AR activity was evaluated using the ARE-luciferase assay or the expression of AR regulated genes. RESULTS Dutasteride was more potent than finasteride in interfering with DHT-stimulated AR signaling. Disruption of AR function was accompanied by decreased cell growth. Cells that rely on DHT for protection against death were particularly vulnerable to dutasteride. Different prostate cancer cell models exhibited different sensitivities to dutasteride and finasteride. LNCaP was most sensitive, LAPC4 and VCaP were intermediate, while 22Rv1 was least sensitive. Regardless of the AR genotype, if AR was transfected into drug-sensitive cells, AR was inhibited by drug treatment; and if AR was transfected into drug-resistant cells, AR was not inhibited. CONCLUSIONS The direct inhibitory effect of dutasteride or finasteride on AR signaling is cell line specific. Mutations in the ligand binding domain of AR do not appear to play a significant role in influencing the AR antagonistic effect of these drugs. Subcellular constituent is an important factor in determining the drug effect on AR function.
Collapse
Affiliation(s)
- Rishi Raj Chhipa
- Department of Cancer Prevention and Control Roswell Park Cancer Institute Buffalo, NY 14263
| | - Danny Halim
- Department of Cancer Prevention and Control Roswell Park Cancer Institute Buffalo, NY 14263
- Health Research Unit Faculty of Medicine Universitas Padjadjaran Bandung 40161, Indonesia
| | - Jinrong Cheng
- Department of Cancer Prevention and Control Roswell Park Cancer Institute Buffalo, NY 14263
| | - Huan Yi Zhang
- Department of Cancer Prevention and Control Roswell Park Cancer Institute Buffalo, NY 14263
| | - James L. Mohler
- Department of Urology Roswell Park Cancer Institute Buffalo, NY 14263
- Department of Urology University at Buffalo School of Medicine and Biotechnology Buffalo, NY 14263
| | - Clement Ip
- Department of Cancer Prevention and Control Roswell Park Cancer Institute Buffalo, NY 14263
| | - Yue Wu
- Department of Cancer Prevention and Control Roswell Park Cancer Institute Buffalo, NY 14263
- Corresponding Author: Department of Cancer Prevention and Control Roswell Park Cancer Institute Elm & Carlton Streets Buffalo, NY 14263 Phone: 716-845-1704; Fax: 716-845-8100
| |
Collapse
|
35
|
Kassam S, Juliger S, Jia L, Joel SP. Methylseleninic acid antagonizes the cytotoxic effect of bortezomib in mantle cell lymphoma cell lines through modulation of Bcl-2 family proteins. Br J Haematol 2011; 156:286-9. [DOI: 10.1111/j.1365-2141.2011.08861.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
36
|
De Luca P, Vazquez ES, Moiola CP, Zalazar F, Cotignola J, Gueron G, Gardner K, De Siervi A. BRCA1 loss induces GADD153-mediated doxorubicin resistance in prostate cancer. Mol Cancer Res 2011; 9:1078-90. [PMID: 21700680 DOI: 10.1158/1541-7786.mcr-11-0155] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BRCA1 plays numerous roles in the regulation of genome integrity and chemoresistance. Although BRCA1 interaction with key proteins involved in DNA repair is well known, its role as a coregulator in the transcriptional response to DNA damage remains poorly understood. In this study, we show that BRCA1 plays a central role in the transcriptional response to genotoxic stress in prostate cancer. BRCA1 expression mediates apoptosis, cell-cycle arrest, and decreased viability in response to doxorubicin treatment. Xenograft studies using human prostate carcinoma PC3 cells show that BRCA1 depletion results in increased tumor growth. A focused survey of BRCA1-regulated genes in prostate carcinoma reveals that multiple regulators of genome stability and cell-cycle control, including BLM, FEN1, DDB2, H3F3B, BRCA2, CCNB2, MAD2L1, and GADD153, are direct transcriptional targets of BRCA1. Furthermore, we show that BRCA1 targets GADD153 promoter to increase its transcription in response to DNA damage. Finally, GADD153 depletion significantly abrogates BRCA1 influence on cell-cycle progression and cell death in response to doxorubicin treatment. These findings define a novel transcriptional pathway through which BRCA1 orchestrates cell fate decisions in response to genotoxic insults, and suggest that BRCA1 status should be considered for new chemotherapeutic treatment strategies in prostate cancer.
Collapse
Affiliation(s)
- Paola De Luca
- Laboratory of Cancer and Apoptosis, Department of Biological Chemistry, School of Scences, University of Buenos Aires, CONICET, Buenos Aires, Argentina
| | | | | | | | | | | | | | | |
Collapse
|
37
|
Stevenson L, Allen WL, Proutski I, Stewart G, Johnston L, McCloskey K, Wilson PM, Longley DB, Johnston PG. Calbindin 2 (CALB2) regulates 5-fluorouracil sensitivity in colorectal cancer by modulating the intrinsic apoptotic pathway. PLoS One 2011; 6:e20276. [PMID: 21629658 PMCID: PMC3101240 DOI: 10.1371/journal.pone.0020276] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Accepted: 04/28/2011] [Indexed: 12/20/2022] Open
Abstract
The role of the calcium binding protein, Calbindin 2 (CALB2), in regulating the response of colorectal cancer (CRC) cells to 5-Fluorouracil (5-FU) was investigated. Real-time RT-PCR and Western blot analysis revealed that CALB2 mRNA and protein expression were down-regulated in p53 wild-type and p53 null isogenic HCT116 CRC cell lines following 48 h and 72 h 5-FU treatment. Moreover, 5-FU-induced apoptosis was significantly reduced in HCT116 and LS174T CRC cell lines in which CALB2 expression had been silenced. Further investigation revealed that CALB2 translocated to the mitochondria following 5-FU treatment and that 5-FU-induced loss of mitochondrial membrane potential (Δψ(m)) was abrogated in CALB2-silenced cells. Furthermore, CALB2 silencing decreased 5-FU-induced cytochrome c and smac release from the mitochondria and also decreased 5-FU-induced activation of caspases 9 and 3/7. Of note, co-silencing of XIAP overcame 5-FU resistance in CALB2-silenced cells. Collectively, these results suggest that following 5-FU treatment in CRC cell lines, CALB2 is involved in apoptosis induction through the intrinsic mitochondrial pathway. This indicates that CALB2 may be an important mediator of 5-FU-induced cell death. Moreover, down-regulation of CALB2 in response to 5-FU may represent an intrinsic mechanism of resistance to this anti-cancer drug.
Collapse
Affiliation(s)
- Leanne Stevenson
- Drug Resistance Group, Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
- * E-mail:
| | - Wendy L. Allen
- Drug Resistance Group, Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| | - Irina Proutski
- Drug Resistance Group, Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| | - Gail Stewart
- Drug Resistance Group, Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| | - Louise Johnston
- Drug Resistance Group, Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| | - Karen McCloskey
- Drug Resistance Group, Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| | - Peter M. Wilson
- Drug Resistance Group, Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| | - Daniel B. Longley
- Drug Resistance Group, Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| | - Patrick G. Johnston
- Drug Resistance Group, Centre for Cancer Research and Cell Biology, Queen's University Belfast, Belfast, Northern Ireland
| |
Collapse
|
38
|
The marine sponge toxin agelasine B increases the intracellular Ca(2+) concentration and induces apoptosis in human breast cancer cells (MCF-7). Cancer Chemother Pharmacol 2011; 69:71-83. [PMID: 21603866 DOI: 10.1007/s00280-011-1677-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2011] [Accepted: 05/09/2011] [Indexed: 10/18/2022]
Abstract
PURPOSE In search for new drugs derived from natural products for the possible treatment of cancer, we studied the action of agelasine B, a compound purified from a marine sponge Agelas clathrodes. METHODS Agelasine B was purified from a marine sponge Agelas clathrodes and assayed for cytotoxicity by MTT on two human breast cancer cells (MCF-7 and SKBr3), on a prostate cancer cells (PC-3) and on human fibroblasts. Changes in the intracellular Ca(2+) concentrations were assessed with FURA 2 and by confocal microscopy. Determination of Ca(2+)-ATPase activity was followed by Pi measurements. Changes in the mitochondria electrochemical potential was followed with Rhodamine 123. Apoptosis and DNA fragmentation were determined by TUNEL experiments. RESULTS Upon agelasine B treatment, cell viability of both human breast cancer cell lines was one order of magnitude lower as compared with fibroblasts (IC(50) for MCF-7 = 2.99 μM; SKBr3: IC(50) = 3.22 μM vs. fibroblasts: IC(50) = 32.91 μM), while the IC(50) for PC-3 IC(50) = 6.86 μM. Agelasine B induced a large increase in the intracellular Ca(2+) concentration in MCF-7, SKBr3, and PC-3 cells. By the use of confocal microscopy coupled to a perfusion system, we could observe that this toxin releases Ca(2+) from the endoplasmic reticulum (ER). We also demonstrated that agelasine B produces a potent inhibition of the ER Ca(2+)-ATPase (SERCA), and that this compound induced the fragmentation of DNA. Accordingly, agelasine B reduced the expression of the anti-apoptotic protein Bcl-2 and was able to activate caspase 8, without affecting the activity of caspase 7. CONCLUSIONS Agelasine B in MCF-7 cells induce the activation of apoptosis in response to a sustained increase in the [Ca(2+)]( i ) after blocking the SERCA activity. The reproduction of the effects of agelasine B on cell viability and on the [Ca(2+)]( I ) obtained on SKBr3 and PC-3 cancer cells strongly suggests the generality of the mechanism of action of this toxin.
Collapse
|
39
|
Wu Y, Chhipa RR, Zhang H, Ip C. The antiandrogenic effect of finasteride against a mutant androgen receptor. Cancer Biol Ther 2011; 11:902-9. [PMID: 21386657 DOI: 10.4161/cbt.11.10.15187] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Finasteride is known to inhibit Type 2 5α-reductase and thus block the conversion of testosterone to dihydrotestosterone (DHT). The structural similarity of finasteride to DHT raises the possibility that finasteride may also interfere with the function of the androgen receptor (AR). Experiments were carried out to evaluate the antiandrogenic effect of finasteride in LNCaP, C4-2 and VCaP human prostate cancer cells. Finasteride decreased DHT binding to AR, and DHT-stimulated AR activity and cell growth in LNCaP and C4-2 cells, but not in VCaP cells. LNCaP and C4-2 (derived from castration-resistant LNCaP) cells express the T877A mutant AR, while VCaP cells express the wild type AR. When PC-3 cells, which are AR-null, were transfected with either the wild type or the T877A mutant AR, only the mutant AR-expressing cells were sensitive to finasteride inhibition of DHT binding. Peroxiredoxin-1 (Prx1) is a novel endogenous facilitator of AR binding to DHT. In Prx1-rich LNCaP cells, the combination of Prx1 knockdown and finasteride was found to produce a greater inhibitory effect on AR activity and cell growth than either treatment alone. The observation suggests that cells with a low expression of Prx1 are likely to be more responsive to the antiandrogenic effect of finasteride. Additional studies showed that the efficacy of finasteride was comparable to that of bicalutamide (a widely used non-steroidal antiandrogen). The implication of the above findings is discussed in the context of developing strategies to improve the outcome of androgen deprivation therapy.
Collapse
Affiliation(s)
- Yue Wu
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA.
| | | | | | | |
Collapse
|
40
|
Wu Y, Chhipa RR, Cheng J, Zhang H, Mohler JL, Ip C. Androgen receptor-mTOR crosstalk is regulated by testosterone availability: implication for prostate cancer cell survival. Anticancer Res 2010; 30:3895-3901. [PMID: 21036700 PMCID: PMC4355915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND Signaling between androgen receptor (AR) and mTOR may be crucial for prostate cancer cells to endure the low androgen and suboptimal nutrient conditions produced by androgen deprivation therapy. MATERIALS AND METHODS AR and mTOR cross-talk was examined in LNCaP cells exposed to either high or low testosterone. AR and mTOR activities were modified separately using either siRNA knockdown or specific chemical inhibitor. The biological significance of the reciprocal communication was assessed by susceptibility to glucose deprivation-induced cell death. RESULTS AR positively regulated mTOR activity in both low and high testosterone levels. TSC1 and TSC2, the two negative regulators of mTOR, may be involved since both were up-regulated by AR knockdown. Sub-baseline mTOR increased AR protein levels. However, this effect only occurred with low testosterone. More cells underwent apoptosis if AR function was inhibited during glucose deprivation, which significantly depressed mTOR activity. CONCLUSION The compensatory increase of AR function due to a repressed mTOR signal is advantageous for survival. Disrupting this loop at the time of initiation of androgen deprivation therapy may delay, or even prevent, the recurrence of prostate cancer.
Collapse
Affiliation(s)
- Yue Wu
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | | | | | | | | | | |
Collapse
|
41
|
The anti-cancer activity of dihydroartemisinin is associated with induction of iron-dependent endoplasmic reticulum stress in colorectal carcinoma HCT116 cells. Invest New Drugs 2010; 29:1276-83. [PMID: 20607588 DOI: 10.1007/s10637-010-9481-8] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Accepted: 06/15/2010] [Indexed: 12/23/2022]
Abstract
Dihydroartemisinin (DHA), the main active metabolite of artemisinin derivatives, is among the artemisinin derivatives possessing potent anti-malarial and anti-cancer activities. In the present study, we found that DHA displayed significant anti-proliferative activity in human colorectal carcinoma HCT116 cells, which may be attributed to its induction of G1 phase arrest and apoptosis. To further elucidate the mechanism of action of DHA, a proteomic study employed two-dimensional gel electrophoresis (2-DE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) was performed. Glucose-regulated protein 78 (GRP78), which is related with endoplasmic reticulum stress (ER stress), was identified to be significantly up-regulated after DHA treatment. Further study demonstrated that DHA enhanced expression of GRP78 as well as growth arrest and DNA-damage-inducible gene 153 (GADD153, another ER stress-associated molecule) at both mRNA and protein levels. DHA treatment also led to accumulation of GADD153 in cell nucleus. Moreover, pretreatment of HCT116 cells with the iron chelator deferoxamine mesylate salt (DFO) abrogated induction of GRP78 and GADD153 upon DHA treatment, indicating iron is required for DHA-induced ER stress. This result is consistent with the fact that the anti-proliferative activity of DHA is also mediated by iron. We thus suggest the unbalance of redox may result in DHA-induced ER stress, which may contribute, at least in part, to its anti-cancer activity.
Collapse
|
42
|
Hiss DC, Gabriels GA. Implications of endoplasmic reticulum stress, the unfolded protein response and apoptosis for molecular cancer therapy. Part I: targeting p53, Mdm2, GADD153/CHOP, GRP78/BiP and heat shock proteins. Expert Opin Drug Discov 2009; 4:799-821. [PMID: 23496268 DOI: 10.1517/17460440903052559] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND In eukaryotes, endoplasmic reticulum stress (ERS) and the unfolded protein response (UPR) are coordinately regulated to maintain steady-state levels and activities of various cellular proteins to ensure cell survival. OBJECTIVE This review (Part I of II) focuses on specific ERS and UPR signalling regulators, their expression in the cancer phenotype and apoptosis, and proposes how their implication in these processes can be rationalised into proteasome inhibition, apoptosis induction and the development of more efficacious targeted molecular cancer therapies. METHOD In this review, we contextualise many ERS and UPR client proteins that are deregulated or mutated in cancers and show links between ERS and the UPR, their implication in oncogenic transformation, tumour progression and escape from immune surveillance, apoptosis inhibition, angiogenesis, metastasis, acquired drug resistance and poor cancer prognosis. CONCLUSION Evasion of programmed cell death or apoptosis is a hallmark of cancer that enables tumour cells to proliferate uncontrollably. Successful eradication of cancer cells through targeting ERS- and UPR-associated proteins to induce apoptosis is currently being pursued as a central tenet of anticancer drug discovery.
Collapse
Affiliation(s)
- Donavon C Hiss
- Head, Molecular Oncology Research Programme University of the Western Cape, Department of Medical BioSciences, Bellville, 7535, South Africa +27 21 959 2334 ; +27 21 959 1563 ;
| | | |
Collapse
|