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Inose-Maruyama A, Irokawa H, Takeda K, Taguchi K, Morita M, Yamamoto M, Sasaki M, Kuge S. Bag1 protein loss sensitizes mouse embryonic fibroblasts to glutathione depletion. Cell Stress Chaperones 2024; 29:497-509. [PMID: 38763404 PMCID: PMC11170100 DOI: 10.1016/j.cstres.2024.05.003] [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: 05/02/2024] [Revised: 05/14/2024] [Accepted: 05/14/2024] [Indexed: 05/21/2024] Open
Abstract
Bcl2-associated athanogene-1 protein (Bag1) acts as a co-chaperone of heat shock protein 70 and heat shock cognate 70 and regulates multiple cellular processes, including cell proliferation, apoptosis, environmental stress response, and drug resistance. Since Bag1 knockout mice exhibited fetal lethality, the in vivo function of Bag1 remains unclear. In this study, we established a mouse line expressing Bag1 gene missing exon 5, which corresponds to an encoding region for the interface of heat shock protein 70/heat shock cognate 70. Despite mice carrying homoalleles of the Bag1 mutant (Bag1Δex5) expressing undetectable levels of Bag1, Bag1Δex5 homozygous mice developed without abnormalities. Bag1Δex5 protein was found to be highly unstable in cells and in vitro. We found that the growth of mouse embryonic fibroblasts derived from Bag1Δex5-homo mice was attenuated by doxorubicin and a glutathione (GSH) synthesis inhibitor, buthionine sulfoximine. In response to buthionine sulfoximine, Bag1Δex5-mouse embryonic fibroblasts exhibited a higher dropping rate of GSH relative to the oxidized glutathione level. In addition, Bag1 might mitigate cellular hydrogen peroxide levels. Taken together, our results demonstrate that the loss of Bag1 did not affect mouse development and that Bag1 is involved in intracellular GSH homeostasis, namely redox homeostasis.
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Affiliation(s)
- Atsushi Inose-Maruyama
- Faculty of Pharmaceutical Sciences, Division of Microbiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Hayato Irokawa
- Faculty of Pharmaceutical Sciences, Division of Microbiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Kouki Takeda
- Faculty of Pharmaceutical Sciences, Division of Microbiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Keiko Taguchi
- Department of Biochemistry and Molecular Biology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Masanobu Morita
- Department of Environmental Medicine and Molecular Toxicology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masayuki Yamamoto
- Department of Biochemistry and Molecular Biology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Masato Sasaki
- Faculty of Pharmaceutical Sciences, Division of Infection and Host Defense, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Shusuke Kuge
- Faculty of Pharmaceutical Sciences, Division of Microbiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan.
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Mihajlovic K, Milosavljevic I, Jeremic J, Savic M, Sretenovic J, Srejovic I, Zivkovic V, Jovicic N, Paunovic M, Bolevich S, Jakovljevic V, Novokmet S. Redox and apoptotic potential of novel ruthenium complexes in rat blood and heart. Can J Physiol Pharmacol 2021; 99:207-217. [PMID: 32976727 DOI: 10.1139/cjpp-2020-0349] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ruthenium(II) complexes offer the potential for lower toxicity compared with platinum(II) complexes. Our study aimed to compare cardiotoxicity of [Ru(Cl-tpy)(en)Cl][Cl], [Ru(Cl-tpy)(dach)Cl][Cl], [Ru(Cl-tpy)(bpy)Cl][Cl], cisplatin, and saline through assessment of redox status and relative expression of apoptosis-related genes. A total of 40 Wistar albino rats were divided into five groups. Ruthenium groups received a single dose of complexes intraperitoneally (4 mg/kg/week) for a 4-week period; cisplatin group received cisplatin (4 mg/kg/week) and control group received saline (4 mL/kg/week) in the same manner as ruthenium groups. In collected blood and heart tissue samples, spectrophotometric determination of oxidative stress biomarkers was performed. The relative expression of apoptosis-related genes (Bcl-2, Bax, and caspase-3) in hearts was examined by real-time polymerase chain reaction. Our results showed that systemic and cardiac pro-oxidative markers (thiobarbituric acid reactive substances and nitrite) were significantly lower in ruthenium groups compared with cisplatin group, while concentrations of antioxidative parameters (catalase, superoxide dismutase, and oxidized glutathione) were significantly higher. Ruthenium administration led to significantly lower gene expression of Bax and caspase-3 compared with cisplatin-treated rats, while Bcl-2 remained unchanged. Applied ruthenium complexes have less pronounced potential for induction of oxidative stress-mediated cardiotoxicity compared with cisplatin. These findings may help for future studies that should clarify the mechanisms of cardiotoxicity of ruthenium-based metallodrugs.
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Affiliation(s)
- Katarina Mihajlovic
- Faculty of Medical Sciences, Department of Pharmacy, University of Kragujevac, Kragujevac, Serbia
| | - Isidora Milosavljevic
- Faculty of Medical Sciences, Department of Pharmacy, University of Kragujevac, Kragujevac, Serbia
| | - Jovana Jeremic
- Faculty of Medical Sciences, Department of Pharmacy, University of Kragujevac, Kragujevac, Serbia
| | - Maja Savic
- Faculty of Medical Sciences, Department of Pharmacy, University of Kragujevac, Kragujevac, Serbia
| | - Jasmina Sretenovic
- Faculty of Medical Sciences, Department of Physiology, University of Kragujevac, Kragujevac, Serbia
| | - Ivan Srejovic
- Faculty of Medical Sciences, Department of Physiology, University of Kragujevac, Kragujevac, Serbia
| | - Vladimir Zivkovic
- Faculty of Medical Sciences, Department of Physiology, University of Kragujevac, Kragujevac, Serbia
| | - Nemanja Jovicic
- Faculty of Medical Sciences, Department of Histology and embryology, University of Kragujevac, Kragujevac, Serbia
| | - Milica Paunovic
- Faculty of Science, Department of Biology and Ecology, University of Kragujevac, Kragujevac, Serbia
| | - Sergey Bolevich
- Department of Human Pathology, First Moscow State Medical University IM Sechenov, Moscow, Russia
| | - Vladimir Jakovljevic
- Faculty of Medical Sciences, Department of Physiology, University of Kragujevac, Kragujevac, Serbia
- Department of Human Pathology, First Moscow State Medical University IM Sechenov, Moscow, Russia
| | - Slobodan Novokmet
- Faculty of Medical Sciences, Department of Pharmacy, University of Kragujevac, Kragujevac, Serbia
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Wan B, Liu B, Yu G, Huang Y, Lv C. Differentially expressed autophagy-related genes are potential prognostic and diagnostic biomarkers in clear-cell renal cell carcinoma. Aging (Albany NY) 2019; 11:9025-9042. [PMID: 31626592 PMCID: PMC6834403 DOI: 10.18632/aging.102368] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 10/07/2019] [Indexed: 12/11/2022]
Abstract
We examined the role of differentially expressed autophagy-related genes (DEARGs) in clear cell Renal Cell Carcinoma (ccRCC) using high-throughput RNA-seq data from The Cancer Genome Atlas (TCGA). Cox regression analyses showed that 5 DEARGs (PRKCQ, BID, BAG1, BIRC5, and ATG16L2) correlated with overall survival (OS) and 4 DEARGs (EIF4EBP1, BAG1, ATG9B, and BIRC5) correlated with disease-free survival (DFS) in ccRCC patients. Multivariate Cox regression analysis using the OS and DFS prognostic risk models showed that expression of the nine DEARGs accurately and independently predicted the risk of disease recurrence or progression in ccRCC patients (area under curve or AUC values > 0.70; all p < 0.05). Moreover, the DEARGs accurately distinguished healthy individuals from ccRCC patients based on receiver operated characteristic (ROC) analyses (area under curve or AUC values > 0.60), suggesting their potential as diagnostic biomarkers for ccRCC. The expression of DEARGs also correlated with the drug sensitivity of ccRCC cell lines. The ccRCC cell lines were significantly sensitive to Sepantronium bromide, a drug that targets BIRC5. This makes BIRC5 a potential therapeutic target for ccRCC. Our study thus demonstrates that DEARGs are potential diagnostic and prognostic biomarkers and therapeutic targets in ccRCC.
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Affiliation(s)
- Bangbei Wan
- Department of Urology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou 570208, Hainan, China
| | - Bo Liu
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou 325003, China
| | - Gang Yu
- Department of Urology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou 570208, Hainan, China
| | - Yuan Huang
- Department of Neurology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou 570208, Hainan, China
| | - Cai Lv
- Department of Urology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou 570208, Hainan, China
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Shi S, Liu X, Li H. Downregulation of caspase‑3 alleviates Mycoplasma pneumoniae‑induced apoptosis in alveolar epithelial cells. Mol Med Rep 2017; 16:9601-9606. [PMID: 29039549 DOI: 10.3892/mmr.2017.7782] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 09/05/2017] [Indexed: 11/06/2022] Open
Abstract
Mycoplasma pneumoniae (M. pneumoniae) infection is closely associated with pneumonia in children. Apoptosis of alveolar epithelial cells is involved in the development of pneumonia in children. The present study aimed to examine how caspase‑3 influences apoptosis rates in M. pneumoniae‑infected alveolar epithelial cells. A549 alveolar epithelial cells were treated with M. pneumoniae, and cells and culture supernatant were collected at different time points. Alterations in apoptosis rates and caspase‑3 mRNA and protein levels were measured for each treatment group. Cell apoptosis was detected using flow cytometry and TUNEL assay, and cell proliferation was detected using Cell Counting Kit‑8 assay. Caspase‑3 expression in A549 cells was inhibited via small interfering RNA (siRNA) knockdown and relative alterations in mRNA and protein levels and apoptosis rates were measured. Cytokine levels were measured using ELISA assay. Apoptosis rates of alveolar epithelial cells increased with prolonged exposure to M. pneumoniae (P<0.05). M. pneumoniae infection increased interleukin (IL)‑4, IL‑6 and IL‑13 levels and reduced IL‑10 levels. Caspase‑3 was upregulated, whereas B cell lymphoma (Bcl)‑2 was downregulated upon M. pneumoniae exposure for 24 h (P<0.05). Following 12 and 24 h of treatment, caspase‑3 levels in the siRNA‑treated cells were decreased compared with control group (P<0.05). M. pneumoniae also significantly altered caspase‑3 and Bcl‑2 protein expression. M. pneumoniae promoted apoptosis in alveolar epithelial cells via activation of the external death receptor pathway. Therefore, M. pneumoniae infection may affect the development of pneumonia in children by regulating caspase‑3 expression and promoting apoptosis.
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Affiliation(s)
- Shan Shi
- Department of Pediatrics, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Xiaolei Liu
- Department of Pediatrics, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Haibo Li
- Department of Pediatrics, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
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Sun J, Pan LM, Chen LB, Wang Y. LncRNA XIST promotes human lung adenocarcinoma cells to cisplatin resistance via let-7i/BAG-1 axis. Cell Cycle 2017; 16:2100-2107. [PMID: 28961027 DOI: 10.1080/15384101.2017.1361071] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) have been identified as oncogenes or tumor suppressors that are involved in tumorigenesis and chemoresistance. LncRNA XIST expression is upregulated in several cancers, however, its biologic role in the development of the chemotherapy of human lung adenocarcinoma (LAD) has not been elucidated. This study aimed to observe the expression of LncRNA XIST in LAD and to evaluate its biologic role and clinical significance in the resistance of LAD cells to cisplatin. LncRNA XIST expression was markedly increased in cisplatin-resistant A549/DDP cells compared with parental A549 cells as shown by qRT-PCR. LncRNA XIST overexpression in A549 cells increased their chemosensitivity to cisplatin both in vitro and in vivo by protecting cells from apoptosis and promoting cell proliferation. By contrast, LncRNA XIST knockdown in A549/DDP cells decreased the chemoresistance. We revealed that XIST functioned as competing endogenous RNA to repress let-7i, which controlled its down-stream target BAG-1. We proposed that XIST was responsible for cisplatin resistance of LAD cells and XIST exerted its function through the let-7i/BAG-1 axis. Our findings suggested that lncRNA XIST may be a new marker of poor response to cisplatin and could be a potential therapeutic target for LAD chemotherapy.
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Affiliation(s)
- Jing Sun
- a Health Examination Center , China-Japan Union Hospital of Jilin University , Changchun , China
| | - Li-Ming Pan
- b The First Hospital of Jilin University , Changchun , China
| | - Li-Bo Chen
- c Department of Ultrasound , China-Japan Union Hospital of Jilin University , Changchun , China
| | - Yue Wang
- d Department of Thoracic Surgery , China-Japan Union Hospital of Jilin University , Changchun , China
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Liu S, Ren B, Gao H, Liao S, Zhai YX, Li S, Su XJ, Jin P, Stroncek D, Xu Z, Zeng Q, Li Y. Over-expression of BAG-1 in head and neck squamous cell carcinomas (HNSCC) is associated with cisplatin-resistance. J Transl Med 2017; 15:189. [PMID: 28877725 PMCID: PMC5588726 DOI: 10.1186/s12967-017-1289-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 08/24/2017] [Indexed: 01/31/2023] Open
Abstract
Background In order to improve therapy for head and neck squamous cell carcinoma (HNSCC), biomarkers associated with local and/or distant tumor relapses and cancer drug resistance are urgently needed. This study identified a potential biomarker, Bcl-2 associated athanogene-1 (BAG-1), that is implicated in HNSCC insensitive to cisplatin and tumor progression. Methods Primary and advanced (relapsed from parental) University of Michigan squamous cell carcinoma cell lines were tested for sensitivity to cisplatin and gene expression profiles were compared between primary (cisplatin sensitive) and the relapsed (cisplatin resistant) cell lines by using Agilent microarrays. Additionally, differentially expressed genes phosphorylated AKT, and BAG-1, and BCL-xL were evaluated for expression using HNSCC tissue arrays. Results Advanced HNSCC cells revealed resistant to cisplatin accompanied by increased expression of BAG-1 protein. siRNA knockdown of BAG-1 expression resulted in significant improvement of HNSCC sensitivity to cisplatin. BAG-1 expression enhanced stability of BCL-xL and conferred cisplatin resistant to the HNSCC cells. In addition, high levels of expression of phosphorylated AKT, BAG-1, and BCL-xL were observed in advanced HNSCC compared to in that of primary HNSCC. Conclusion Increased expression of BAG-1 was associated with cisplatin resistance and tumor progression in HNSCC patients and warrants further validation in larger independent studies. Over expression of BAG-1 may be a biomarker for cisplatin resistance in patients with primary or recurrent HNSCCs and targeting BAG-1 could be helpful in overcoming cisplatin resistance. Electronic supplementary material The online version of this article (doi:10.1186/s12967-017-1289-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shutong Liu
- The Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, 130021, Jilin, China.,Cell Processing Section, Department of Transfusion, Clinical Center, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Bo Ren
- The Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, 130021, Jilin, China
| | - Hang Gao
- The Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, 130021, Jilin, China
| | - Suchan Liao
- The Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, 130021, Jilin, China.,Department of Physiology, Youjiang Medical University for Nationalities, Baise, 533000, Guangxi, China
| | - Ying-Xian Zhai
- The Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, 130021, Jilin, China
| | - Shirong Li
- The Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, 130021, Jilin, China
| | - Xue-Jin Su
- The Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, 130021, Jilin, China
| | - Ping Jin
- Cell Processing Section, Department of Transfusion, Clinical Center, National Institutes of Health, Bethesda, MD, 20892, USA
| | - David Stroncek
- Cell Processing Section, Department of Transfusion, Clinical Center, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Zhixiang Xu
- The Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, 130021, Jilin, China.,Division of Hematology/Oncology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Qinghua Zeng
- The Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, 130021, Jilin, China. .,Division of Hematology/Oncology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
| | - Yulin Li
- The Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, 130021, Jilin, China.
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Ma Y, Pan X, Xu P, Mi Y, Wang W, Wu X, He Q, Liu X, Tang W, An HX. Plasma microRNA alterations between EGFR-activating mutational NSCLC patients with and without primary resistance to TKI. Oncotarget 2017; 8:88529-88536. [PMID: 29179454 PMCID: PMC5687624 DOI: 10.18632/oncotarget.19874] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 07/18/2017] [Indexed: 12/29/2022] Open
Abstract
Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) have obtained excellent therapeutic effects against non-small cell lung cancer (NSCLC) harboring activating EGFR mutations. However, some patients have exhibited primary resistance which becomes a major obstacle in effective treatment of NSCLC. The mechanisms of EGFR-TKIs resistance involved are still poorly understood. Many studies suggest that miRNAs play an important role in regulating drug sensitivity of EGFR-TKIs. The aim of the present study was to examine differentially expressed miRNAs in plasma between EGFR-TKIs sensitive and EGFR-TKIs primary resistance patients. MiRNA microarray of plasma from patients' blood identified 16 differentially expressed miRNAs of which 15 (hsv2-miR-H19, hsa-miR-744-5p, hsa-miR-3196, hsa-miR-3153, hsa-miR-4791, hsa-miR-4803, hsa-miR-4796-3p, hsa-miR-372-5p, hsa-miR-138-2-3p, hsa-miR-16-1-3p, hsa-miR-1469, hsa-miR-585-3p, ebv-miR-BART14-5p, hsa-miR-769-3p, hsa-miR-548aq-5p) were down regulated while only hsa-miR-503-3p was up regulated in primary resistant patients' plasma. Volcano plot and hierarchical clustering were performed to examine the accuracy of the miRNAs. Then validation with quantitative real-time PCR was performed and the result was in accordance with the array data. Functional analysis of these differentially expressed miRNAs with Ingenuity Pathway Analysis (IPA) revealed a common signaling network including MYC, CCND1, IGF1 and RELA. In conclusion, our finding may play important role in understanding the mechanisms underlying the problem and should be further evaluated as potential biomarkers in primary resistance of NSCLC.
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Affiliation(s)
- Yihan Ma
- Xiamen Cancer Hospital the First Affiliated Hospital of Xiamen University, 361003 Fujian, China
| | - Xiaoyan Pan
- Xiamen Cancer Hospital the First Affiliated Hospital of Xiamen University, 361003 Fujian, China.,Department of Medical Oncology, Linyi Cancer Hospital, 276000 Shandong, China
| | - Peiqi Xu
- Reproduction Center, The Second Affiliated Hospital of Kunming Medical University, 650101 Yunnan, China
| | - Yanjun Mi
- Xiamen Cancer Hospital the First Affiliated Hospital of Xiamen University, 361003 Fujian, China
| | - Wenyi Wang
- Xiamen Cancer Hospital the First Affiliated Hospital of Xiamen University, 361003 Fujian, China
| | - Xiaoting Wu
- Xiamen Cancer Hospital the First Affiliated Hospital of Xiamen University, 361003 Fujian, China
| | - Qi He
- Xiamen Cancer Hospital the First Affiliated Hospital of Xiamen University, 361003 Fujian, China
| | - Xinli Liu
- Xiamen Cancer Hospital the First Affiliated Hospital of Xiamen University, 361003 Fujian, China
| | - Weiwei Tang
- Xiamen Cancer Hospital the First Affiliated Hospital of Xiamen University, 361003 Fujian, China
| | - Han-Xiang An
- Xiamen Cancer Hospital the First Affiliated Hospital of Xiamen University, 361003 Fujian, China
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Cheng R, Lu C, Zhang G, Zhang G, Zhao G. Overexpression of miR-203 increases the sensitivity of NSCLC A549/H460 cell lines to cisplatin by targeting Dickkopf-1. Oncol Rep 2017; 37:2129-2136. [DOI: 10.3892/or.2017.5505] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 12/14/2016] [Indexed: 11/05/2022] Open
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9
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Pileczki V, Pop L, Braicu C, Budisan L, Bolba Morar G, Del C Monroig-Bosque P, Sandulescu RV, Berindan-Neagoe I. Double gene siRNA knockdown of mutant p53 and TNF induces apoptosis in triple-negative breast cancer cells. Onco Targets Ther 2016; 9:6921-6933. [PMID: 27956838 PMCID: PMC5113913 DOI: 10.2147/ott.s110719] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Apoptosis is the major downregulated pathway in cancer. Simultaneous inhibition using specific small interfering RNA (siRNA) of two key player genes, p53 and TNF, is an interesting and feasible strategy when it comes to investigating various molecular pathways and biological processes in triple-negative breast cancer (TNBC), which is one of the most aggressive and therapeutically unresponsive forms of breast cancers. Our present research focuses on evaluating the impact of double p53-siRNA and TNF-siRNA knockdown at a cellular level, and also evaluating cell proliferation, apoptosis, induction of autophagy, and gene expression by using reverse transcription polymerase chain reaction array approaches. Simultaneous inhibition of p53 and TNF in Hs578T TNBC human cell line revealed a panel of up- and downregulated genes involved in apoptosis. Furthermore, the effects of double gene knockdown were validated in a second TNBC cell line, MDA-MB-231, by using reverse transcription polymerase chain reaction TaqMan assay. All our findings help in understanding the functional mechanisms of extrinsic apoptosis, cell signaling pathways, and the mechanisms involved in tumor cell survival, growth, and death in TNBC.
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Affiliation(s)
- Valentina Pileczki
- The Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania; Department of Analytical Chemistry, Faculty of Pharmacy, "Iuliu Hatieganu" University of Medicine and Pharmacy
| | - Laura Pop
- The Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cornelia Braicu
- The Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Livia Budisan
- The Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Gabriela Bolba Morar
- Department of Senology, the Oncology Institute "Prof Dr Ion Chiricuta", Cluj-Napoca, Romania
| | | | - Robert V Sandulescu
- Department of Analytical Chemistry, Faculty of Pharmacy, "Iuliu Hatieganu" University of Medicine and Pharmacy
| | - Ioana Berindan-Neagoe
- The Research Center for Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania; MedFuture Research Center for Advanced Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania; Department of Functional Genomics and Experimental Pathology, the Oncology Institute "Prof Dr Ion Chiricuta", Cluj-Napoca, Romania
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