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Ye J, Wu Q, Ji Q, You S, Gao S, Zhao G, Xu Q, Liu K, Li P. Au/Doc/Quer@PDA/A10-3.2 Nanoparticles for targeted treatment of docetaxel-resistant prostate cancer. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:1631-1655. [PMID: 38769597 DOI: 10.1080/09205063.2024.2346395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 04/04/2024] [Indexed: 05/22/2024]
Abstract
Docetaxel (Doc), as a first-line chemotherapy drug for prostate cancer (PC), often loses its therapeutic efficacy due to acquired resistance and lack of targeting specificity. Therefore, there is a need to develop a novel drug that can overcome Doc resistance and enhance its targeting ability to inhibit PC progression. In this study, we prepared Au/Doc/Quer@PDA/A10-3.2 nanoparticles (NPs) composite drug by encapsulating Doc and quercetin (Quer) within polydopamine (PDA)-coated Au NPs and further modifying them with RNA oligonucleotide aptamer A10-3.2. A10-3.2 was used for specific targeting of prostate-specific membrane antigen (PSMA)-positive PC cells (LNCaP). Quer was employed to reverse the resistance of Doc-resistant cell line (LNCaP/R) to Doc. Physical characterization using ultraviolet-visible spectroscopy (UV-vis), transmission electron microscopy (TEM), dynamic light scattering (DLS), X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared spectroscopy (FTIR) confirmed the successful preparation of Au/Doc/Quer@PDA/A10-3.2 NPs. Fluorescence imaging and flow cytometry experiments demonstrated the targeting ability of Au/Doc/Quer@PDA/A10-3.2 NPs towards PSMA-positive LNCaP/R cells. Cell proliferation, apoptosis, invasion, and migration experiments revealed that Quer reversed the resistance of LNCaP/R cells to Doc. Immunoblotting experiments further confirmed the mechanism behind sensitization of chemotherapy by Quer. Finally, we evaluated the therapeutic efficacy of Au/Doc/Quer@PDA/A10-3.2 NPs in a mouse model of PC. In conclusion, this study synthesized and validated a novel nano-composite drug (Au/Doc/Quer@PDA/A10-3.2 NPs) for combating Doc-resistant PC, which could potentially be applied in clinical treatment of PC.
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Affiliation(s)
- Junjie Ye
- Urology Department, Lishui City People's Hospital; Postgraduate training base Alliance of Wenzhou Medical University (Lishui City People's Hospital), Lishui City, Zhejiang Province, China
| | - Qi Wu
- Urology Department, Lishui City People's Hospital; Postgraduate training base Alliance of Wenzhou Medical University (Lishui City People's Hospital), Lishui City, Zhejiang Province, China
| | - Qingfen Ji
- Urology Department, Lishui City People's Hospital; Postgraduate training base Alliance of Wenzhou Medical University (Lishui City People's Hospital), Lishui City, Zhejiang Province, China
| | - Shengjie You
- Urology Department, Lishui City People's Hospital; Postgraduate training base Alliance of Wenzhou Medical University (Lishui City People's Hospital), Lishui City, Zhejiang Province, China
| | - Song Gao
- Urology Department, Lishui City People's Hospital; Postgraduate training base Alliance of Wenzhou Medical University (Lishui City People's Hospital), Lishui City, Zhejiang Province, China
| | - Guanan Zhao
- Urology Department, Lishui City People's Hospital; Postgraduate training base Alliance of Wenzhou Medical University (Lishui City People's Hospital), Lishui City, Zhejiang Province, China
| | - Qiangqiang Xu
- Urology Department, Lishui City People's Hospital; Postgraduate training base Alliance of Wenzhou Medical University (Lishui City People's Hospital), Lishui City, Zhejiang Province, China
| | - Ken Liu
- Urology Department, Lishui City People's Hospital; Postgraduate training base Alliance of Wenzhou Medical University (Lishui City People's Hospital), Lishui City, Zhejiang Province, China
| | - Peng Li
- Urology Department, Lishui City People's Hospital; Postgraduate training base Alliance of Wenzhou Medical University (Lishui City People's Hospital), Lishui City, Zhejiang Province, China
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Alalawy AI. Key genes and molecular mechanisms related to Paclitaxel Resistance. Cancer Cell Int 2024; 24:244. [PMID: 39003454 PMCID: PMC11245874 DOI: 10.1186/s12935-024-03415-0] [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: 02/29/2024] [Accepted: 06/22/2024] [Indexed: 07/15/2024] Open
Abstract
Paclitaxel is commonly used to treat breast, ovarian, lung, esophageal, gastric, pancreatic cancer, and neck cancer cells. Cancer recurrence is observed in patients treated with paclitaxel due to paclitaxel resistance emergence. Resistant mechanisms are observed in cancer cells treated with paclitaxel, docetaxel, and cabazitaxel including changes in the target molecule β-tubulin of mitosis, molecular mechanisms that activate efflux drug out of the cells, and alterations in regulatory proteins of apoptosis. This review discusses new molecular mechanisms of taxane resistance, such as overexpression of genes like the multidrug resistance genes and EDIL3, ABCB1, MRP1, and TRAG-3/CSAG2 genes. Moreover, significant lncRNAs are detected in paclitaxel resistance, such as lncRNA H19 and cross-resistance between taxanes. This review contributed to discovering new treatment strategies for taxane resistance and increasing the responsiveness of cancer cells toward chemotherapeutic drugs.
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Affiliation(s)
- Adel I Alalawy
- Department of Biochemistry, Faculty of Science, University of Tabuk, Tabuk, 71491, Saudi Arabia.
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Zhou Y, Li F, Zou B, Zhou X, Luo L, Dong S, He Z, Zhang Z, Liao L, Liu H, Cai C, Gu D, Duan X. β-Arrestin2 promotes docetaxel resistance of castration-resistant prostate cancer via promoting hnRNP A1-mediated PKM2 alternative splicing. Discov Oncol 2023; 14:215. [PMID: 38019357 PMCID: PMC10686933 DOI: 10.1007/s12672-023-00740-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 06/26/2023] [Indexed: 11/30/2023] Open
Abstract
PURPOSE To investigate the influence of β-arrestin2 on the docetaxel resistance in castration-resistant prostate cancer (CRPC) and elucidate the underlying molecular mechanisms. METHODS PC3 and DU145 cells with stable β-arrestin2 overexpression and C4-2 cells with stable β-arrestin2 knockdown, were constructed via using lentivirus and puromycin selection. MTT and colony formation assays were carried out to investigate the effect of β-arrestin2 expression on the docetaxel resistance of CRPC cells. Glycolysis analysis was used to assess the glycolytic capacity modulated by β-arrestin2. GO enrichment analysis, gene set enrichment analysis and Spearman correlation test were carried out to explore the potential biological function and mechanism via using public data from GEO and TCGA. The expressions of PKM2, Phospho-PKM2, Phospho-ERK1/2 and hnRNP A1 were detected by western blot. Functional blocking experiments were carried out to confirm the roles of PKM2 and hnRNP A1 in the regulation of β-arrestin2's biological functions via silencing PKM2 or hnRNP A1 expression in cells with stable β-arrestin2 overexpression. Finally, nude mice xenograft models were established to confirm the experimental results of cell experiments. RESULTS β-Arrestin2 significantly decreased the sensitivity of CRPC cells to docetaxel stimulation, through enhancing the phosphorylation and expression of PKM2. Additionally, β-arrestin2 increased PKM2 phosphorylation via the ERK1/2 signaling pathway and induced PKM2 expression in a post-transcriptional manner through an hnRNP A1-dependent PKM alternative splicing mechanism, rather than by inhibiting its ubiquitination degradation. CONCLUSION Our findings indicate that the β-arrestin2/hnRNP A1/PKM2 pathway could be a promising target for treating docetaxel-resistant CRPC.
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Affiliation(s)
- Yuhao Zhou
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China
| | - Fei Li
- Department of Pharmacy, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Bangyu Zou
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China
| | - Xiaofeng Zhou
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China
| | - Lianmin Luo
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China
| | - Sicheng Dong
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China
| | - Zhiqing He
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China
| | - Zhixiong Zhang
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China
| | - Liqiong Liao
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China
| | - Hongxing Liu
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China
| | - Chao Cai
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China
| | - Di Gu
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China.
| | - Xiaolu Duan
- Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Kangda Road 1, Haizhu District, Guangzhou, 510230, Guangdong, China.
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Kennon AM, Stewart JA. Paracrine Signals in Calcified Conditioned Media Elicited Differential Responses in Primary Aortic Vascular Smooth Muscle Cells and in Adventitial Fibroblasts. Int J Mol Sci 2023; 24:ijms24043599. [PMID: 36835011 PMCID: PMC9961433 DOI: 10.3390/ijms24043599] [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: 12/27/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023] Open
Abstract
Our goal was to determine if paracrine signals from different aortic layers can impact other cell types in the diabetic microenvironment, specifically medial vascular smooth muscle cells (VSMCs) and adventitial fibroblasts (AFBs). The diabetic hyperglycemic aorta undergoes mineral dysregulation, causing cells to be more responsive to chemical messengers eliciting vascular calcification. Advanced glycation end-products (AGEs)/AGE receptors (RAGEs) signaling has been implicated in diabetes-mediated vascular calcification. To elucidate responses shared between cell types, pre-conditioned calcified media from diabetic and non-diabetic VSMCs and AFBs were collected to treat cultured murine diabetic, non-diabetic, diabetic RAGE knockout (RKO), and non-diabetic RKO VSMCs and AFBs. Calcium assays, western blots, and semi-quantitative cytokine/chemokine profile kits were used to determine signaling responses. VSMCs responded to non-diabetic more than diabetic AFB calcified pre-conditioned media. AFB calcification was not significantly altered when VSMC pre-conditioned media was used. No significant changes in VSMCs signaling markers due to treatments were reported; however, genotypic differences existed. Losses in AFB α-smooth muscle actin were observed with diabetic pre-conditioned VSMC media treatment. Superoxide dismutase-2 (SOD-2) increased with non-diabetic calcified + AGE pre-conditioned VSMC media, while same treatment decreased diabetic AFBs levels. Overall, non-diabetic and diabetic pre-conditioned media elicited different responses from VSMCs and AFBs.
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Affiliation(s)
- Amber M. Kennon
- Department of Investigational Cancer, Division of Cancer Medicine, U.T.M.D Anderson Cancer Center, Houston, TX 77030, USA
| | - James A. Stewart
- Department of BioMolecular Sciences, School of Pharmacy, University of Mississippi, Oxford, MS 38677, USA
- Correspondence: ; Tel.: +1-(662)-915-2309
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Wang S, Han L, Li J, Liu Y, Wang S. Inflammatory molecules facilitate the development of docetaxel-resistant prostate cancer cells in vitro and in vivo. Fundam Clin Pharmacol 2022; 36:837-849. [PMID: 35255161 DOI: 10.1111/fcp.12773] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 02/18/2022] [Accepted: 02/28/2022] [Indexed: 01/04/2023]
Abstract
Numerous molecular mechanisms have been found to contribute to docetaxel-induced resistance in prostate cancer (PCa). In this study, the changes in gene expression profiles of multidrug resistant PCa cells that were established in response to docetaxel were determined using microarray analysis. In addition to alterations in the expression of multidrug resistance-associated genes, the expression levels of multiple inflammatory molecules, in particular IL-6, significantly increased in resistant cells in vitro and in vivo, which further increased with the development of drug resistance following microarray, qRT-PCR and ELISA analysis. Compared with parental cells, resistant cells also presented with stronger activation of multiple IL-6-associated signaling pathways STAT1/3, NF-κB, and PI3K/AKT. Inactivation of IL-6 using a neutralizing antibody resulted in a slight effect on the sensitivity of resistant cells to docetaxel, while blockade of of STAT1/3, NF-κB, or PI3K/AKT signaling significantly resensitized resistant cells to docetaxel. Of note, simultaneous inactivation of IL-6 and STAT1/3, PI3K/AKT or NF-κB further enhanced the sensitivity of the resistant cells to docetaxel. Thus, inflammatory molecules, in particular IL-6, and IL-6-associated signaling pathways NF-κB, STAT1/3, and PI3K/AKT, are crucial mediators of the development of docetaxel-resistance in PCa. Targeting inflammatory molecules and signaling pathways could be a potential therapeutic option for the intervention of drug resistance in PCa.
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Affiliation(s)
- Shikang Wang
- Department of Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Leiqiang Han
- Department of Clinical Pharmacy, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Juan Li
- Department of Clinical Pharmacy, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yongqing Liu
- Department of Clinical Pharmacy, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Shaoyong Wang
- Department of Urology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
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Al Haq AT, Tseng HY, Chen LM, Wang CC, Hsu HL. Targeting prooxidant MnSOD effect inhibits triple-negative breast cancer (TNBC) progression and M2 macrophage functions under the oncogenic stress. Cell Death Dis 2022; 13:49. [PMID: 35017469 PMCID: PMC8752602 DOI: 10.1038/s41419-021-04486-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 11/23/2021] [Accepted: 12/17/2021] [Indexed: 12/11/2022]
Abstract
Triple-negative breast cancer (TNBC) has been shown with high mitochondrial oxidative phosphorylation and production of reactive oxygen species (ROS). MnSOD (SOD2) is a mitochondrial antioxidant defense that has been implicated in inhibition of human malignancies. However, the impact of MnSOD on immunosuppressive macrophage functions and TNBC aggressiveness has never been explored. We found here that SOD2high is primarily observed in the aggressive subtypes of HER2(+) breast cancers and TNBCs patients. Further analyses demonstrated that the oncoprotein multiple copies in T-cell malignancy-1 (MCT-1 or MCTS1) induces mitochondrial superoxide dismutase (MnSOD) in TNBC cells by stabilizing the transcription factor Nrf2. SOD2high/MCTS1high expression correlates with a poor prognosis in breast cancer patients. MnSOD in TNBC cells functions as a prooxidant peroxidase that increases mitochondrial ROS (mROS) and adaptation to oxidative stress under the oncogenic effect. Interleukin-6 (IL-6) in the MCT-1 pathway elevates Nrf2/MnSOD and mROS levels. Knockdown of MnSOD inhibits TNBC cell invasion, breast cancer stem cells (BCSCs), mROS, and IL-6 excretion promoted by MCT-1. TNBC cells deficient in MnSOD prevent the polarization and chemotaxis of M2 macrophages but improve the ability of M1 macrophages to engulf cancer cells. Quenching mROS with MitoQ, a mitochondria-targeted non-metal-based antioxidant MnSOD mimics, effectively suppresses BCSCs and M2 macrophage invasion exacerbated by MnSOD and MCT-1. Consistently, silencing MnSOD impedes TNBC progression and intratumoral M2 macrophage infiltration. We revealed a novel stratagem for TNBC management involving targeting the MCT-1 oncogene-induced mitochondrial prooxidant MnSOD pathway, which prevents the development of an immunosuppressive tumor microenvironment.
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Affiliation(s)
- Aushia Tanzih Al Haq
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli, Taiwan.,Department of Life Sciences, National Central University, Taoyuan, Taiwan
| | - Hong-Yu Tseng
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli, Taiwan
| | - Li-Mei Chen
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli, Taiwan
| | - Chien-Chia Wang
- Department of Life Sciences, National Central University, Taoyuan, Taiwan
| | - Hsin-Ling Hsu
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli, Taiwan.
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Rizzo M. Mechanisms of docetaxel resistance in prostate cancer: The key role played by miRNAs. Biochim Biophys Acta Rev Cancer 2020; 1875:188481. [PMID: 33217485 DOI: 10.1016/j.bbcan.2020.188481] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/04/2020] [Accepted: 11/12/2020] [Indexed: 12/24/2022]
Abstract
One of the main problems with the treatment of metastatic prostate cancer is that, despite an initial positive response, the majority of patients develop resistance and progress. In particular, the resistance to docetaxel, the gold standard therapy for metastatic prostate cancer since 2010, represents one of the main factors responsible for the failure of prostate cancer therapy. According to the present knowledge, different processes contribute to the appearance of docetaxel resistance and non-coding RNA seems to play a relevant role in them. In this review, a comprehensive overview of the miRNA network involved in docetaxel resistance is described, highlighting the pathway/s affected by their activity.
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Affiliation(s)
- Milena Rizzo
- Non-coding RNA Group, Functional Genetics and Genomics Lab, Institute of Clinical Physiology (IFC), CNR, Pisa, Italy.
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Leger T, Jouve C, Hininger-Favier I, Rigaudiere JP, Capel F, Sapin V, Moreau C, Charrier A, Demaison L. EPA is Cardioprotective in Male Rats Subjected to Sepsis, but ALA Is Not Beneficial. Antioxidants (Basel) 2020; 9:antiox9050371. [PMID: 32365668 PMCID: PMC7278601 DOI: 10.3390/antiox9050371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/18/2020] [Accepted: 04/28/2020] [Indexed: 01/06/2023] Open
Abstract
It has been proven that dietary eicosapentaenoic acid (C20:5 n-3 or EPA) protects the heart against the deleterious effects of sepsis in female rats. We do not know if this is the case for male rodents. In this case, the efficiency of other n-3 polyunsaturated fatty acids (PUFAs) remains to be determined in both female and male rats. This study aimed at (i) determining whether dietary EPA is cardioprotective in septic male rats; (ii) evaluating the influence of dietary α-linolenic (C18:3 n-3 or ALA) on cardiac function during this pathology; and (iii) finding out the physiological and molecular mechanisms responsible for the observed effects. Sixty male rats were divided into three dietary groups. The animals were fed a diet deficient in n-3 PUFAs (DEF group), a diet enriched with ALA (ALA group) or a diet fortified with EPA (EPA group) for 6 weeks. Thereafter, each group was subdivided into 2 subgroups, one being subjected to cecal ligation and puncture (CLP) and the other undergoing a fictive surgery. Cardiac function was determined in vivo and ex vivo. Several parameters related to the inflammation process and oxidative stress were determined. Finally, the fatty acid compositions of circulating lipids and cardiac phospholipids were evaluated. The results of the ex vivo situation indicated that sepsis triggered cardiac damage in the DEF group. Conversely, the ex vivo data indicated that dietary ALA and EPA were cardioprotective by resolving the inflammation process and decreasing the oxidative stress. However, the measurements of the cardiac function in the in vivo situation modulated these conclusions. Indeed, in the in vivo situation, sepsis deteriorated cardiac mechanical activity in the ALA group. This was suspected to be due to a restricted coronary flow which was related to a lack of cyclooxygenase substrates in membrane phospholipids. Finally, only EPA proved to be beneficial in sepsis. Its action necessitates both resolution of inflammation and increased coronary perfusion. In that sense, dietary ALA, which does not allow the accumulation of vasodilator precursors in membrane lipids, cannot be protective during the pathology.
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Affiliation(s)
- Thibault Leger
- UNH, Unité de Nutrition Humaine, UMR 1019, Université Clermont Auvergne, INRAE, CRNH Auvergne, 63000 Clermont-Ferrand, France; (T.L.); (C.J.); (J.-P.R.); (F.C.); (C.M.); (A.C.)
| | - Chrystèle Jouve
- UNH, Unité de Nutrition Humaine, UMR 1019, Université Clermont Auvergne, INRAE, CRNH Auvergne, 63000 Clermont-Ferrand, France; (T.L.); (C.J.); (J.-P.R.); (F.C.); (C.M.); (A.C.)
| | | | - Jean-Paul Rigaudiere
- UNH, Unité de Nutrition Humaine, UMR 1019, Université Clermont Auvergne, INRAE, CRNH Auvergne, 63000 Clermont-Ferrand, France; (T.L.); (C.J.); (J.-P.R.); (F.C.); (C.M.); (A.C.)
| | - Frédéric Capel
- UNH, Unité de Nutrition Humaine, UMR 1019, Université Clermont Auvergne, INRAE, CRNH Auvergne, 63000 Clermont-Ferrand, France; (T.L.); (C.J.); (J.-P.R.); (F.C.); (C.M.); (A.C.)
| | - Vincent Sapin
- Department of Medical Biochemistry and Molecular Biology, CHU Clermont-Ferrand, 63000 Clermont-Ferrand, France;
| | - Clarisse Moreau
- UNH, Unité de Nutrition Humaine, UMR 1019, Université Clermont Auvergne, INRAE, CRNH Auvergne, 63000 Clermont-Ferrand, France; (T.L.); (C.J.); (J.-P.R.); (F.C.); (C.M.); (A.C.)
| | - Alice Charrier
- UNH, Unité de Nutrition Humaine, UMR 1019, Université Clermont Auvergne, INRAE, CRNH Auvergne, 63000 Clermont-Ferrand, France; (T.L.); (C.J.); (J.-P.R.); (F.C.); (C.M.); (A.C.)
| | - Luc Demaison
- UNH, Unité de Nutrition Humaine, UMR 1019, Université Clermont Auvergne, INRAE, CRNH Auvergne, 63000 Clermont-Ferrand, France; (T.L.); (C.J.); (J.-P.R.); (F.C.); (C.M.); (A.C.)
- Correspondence:
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Zhang D, Liu S, Liu Z, Ma C, Jiang Y, Sun C, Li K, Cao G, Lin Z, Wang P, Zhang J, Xu D, Kong F, Zhao S. Polyphyllin I induces cell cycle arrest in prostate cancer cells via the upregulation of IL6 and P21 expression. Medicine (Baltimore) 2019; 98:e17743. [PMID: 31689825 PMCID: PMC6946393 DOI: 10.1097/md.0000000000017743] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Polyphyllin I has been reported to possess anticancer properties in various cancer types, including prostate cancer. However, little is known about the potential of Polyphyllin I in induction of prostate cancer cell cycle arrest and its underlying mechanisms. METHODS The anti-proliferation activity of Polyphyllin I was tested using cell counting kit-8 assay. The cell cycle arrest effects of Polyphyllin I were confirmed by flow cytometry. Western blot was used to test the effect of Polyphyllin I on cell cycle-related protein expression. Reverse transcription-polymerase chain reaction was used to test the expression of genes regulating P21 expression. RESULTS Polyphyllin I induced prostate cancer cell cycle arrest in G0/G1 phase in concentration-dependent manner. Polyphyllin I induced cell cycle arrest by upregulating the expression of P21. Further studies showed that the upregulation of p21 expression induced by Polyphyllin I via the upregulation of IL6 expression. CONCLUSION Polyphyllin I could induce cell cycle arrest in G0/G1 phase in prostate cancer cells by upregulating the expression of P21 and IL6.
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Affiliation(s)
- Denglu Zhang
- Department of Central Research Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine
| | - Shuai Liu
- Department of Central Research Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine
| | - Zhiyong Liu
- Department of Central Research Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine
| | - Chenchen Ma
- Department of Central Research Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine
| | - Yuehua Jiang
- Department of Central Research Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine
| | - Chao Sun
- Department of Central Research Laboratory, The Second Hospital of Shandong University, Shandong University
| | - Kailin Li
- Department of Central Research Laboratory, The Second Hospital of Shandong University, Shandong University
| | - Guangshang Cao
- Department of Pharmacy, Affiliated Hospital of Shandong University of Traditional Chinese Medicine
| | - Zhaomin Lin
- Department of Central Research Laboratory, The Second Hospital of Shandong University, Shandong University
| | - Peng Wang
- Department of Central Research Laboratory, The Second Hospital of Shandong University, Shandong University
| | - Jianye Zhang
- Department of Urology, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Dawei Xu
- Department of Medicine, Division of Hematology and Centre for Molecular Medicine, Karolinska University Hospital Solna and Karolinska Institutet, Stockholm, Sweden
| | - Feng Kong
- Department of Central Research Laboratory, The Second Hospital of Shandong University, Shandong University
| | - Shengtian Zhao
- Department of Urology, The Second Hospital of Shandong University, Jinan, Shandong, China
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
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10
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Niu H, Qian L, Sun B, Liu W, Wang F, Wang Q, Ji X, Luo Y, Nesa EU, Lou H, Yuan H. Inactivation of TFEB and NF- κB by marchantin M alleviates the chemotherapy-driven pro-tumorigenic senescent secretion. Acta Pharm Sin B 2019; 9:923-936. [PMID: 31649843 PMCID: PMC6804491 DOI: 10.1016/j.apsb.2019.08.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/04/2019] [Accepted: 08/19/2019] [Indexed: 01/10/2023] Open
Abstract
It is critical to regulate the senescence-associated secretory phenotype (SASP) due to its effect on promoting malignant phenotypes and limiting the efficiency of cancer therapy. In this study, we demonstrated that marchantin M (Mar-M, a naturally occurring bisbibenzyl) suppressed pro-inflammatory SASP components which were elevated in chemotherapy-resistant cells. Mar-M treatment attenuated the pro-tumorigenic effects of SASP and enhanced survival in drug-resistant mouse models. No toxicity was detected on normal fibroblast cells or in animals following this treatment. Inactivation of transcription factor EB (TFEB) and nuclear factor-κB (NF-κB) by Mar-M significantly accounted for its suppression on the components of SASP. Furthermore, inhibition of SASP by Mar-M contributed to a synergistic effect during co-treatment with doxorubicin to lower toxicity and enhance antitumor efficacy. Thus, chemotherapy-driven pro-inflammatory activity, seen to contribute to drug-resistance, is an important target for Mar-M. By decreasing SASP, Mar-M may be a potential approach to overcome tumor malignancy.
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Key Words
- ALT, glutamic-pyruvic transaminase
- AST, transaminase
- BUN, blood urea nitrogen
- CDDP, cisplatin
- CI, combinatory index
- CM, conditioned media
- CREA, creatinine
- CT-like, both chymotrypsin-like
- DMSO, dimethyl sulfoxide
- Doc, docetaxel
- Doxo, doxorubicin
- Drug resistance
- EdU, 5-ethynyl-2′-deoxyuridine
- LPS, lipopolysaccharide
- MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
- Mar-M, Marchantin M
- Marchantin M
- NF-κB
- NF-κB, nuclear factor-κB
- PGPH, peptidylglutamyl hydrolyzing
- PI, propidium iodide
- ROS, reactive oxygen species
- SA-β-gal, senescence-associated β-galactosidase
- SASP
- SASP, senescence-associated secretory phenotype
- Sv, starvation
- TCGA, the Cancer Genome Atlas
- TFEB
- TFEB, transcription factor EB
- Tg, thapsigargin
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11
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NES1/KLK10 and hNIS gene therapy enhanced iodine-131 internal radiation in PC3 proliferation inhibition. Front Med 2019; 13:646-657. [DOI: 10.1007/s11684-018-0643-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 04/26/2018] [Indexed: 12/26/2022]
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12
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Acetyl-11-keto-β-boswellic acid suppresses docetaxel-resistant prostate cancer cells in vitro and in vivo by blocking Akt and Stat3 signaling, thus suppressing chemoresistant stem cell-like properties. Acta Pharmacol Sin 2019; 40:689-698. [PMID: 30171201 DOI: 10.1038/s41401-018-0157-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 07/03/2018] [Indexed: 12/16/2022] Open
Abstract
Acquired docetaxel-resistance of prostate cancer (PCa) remains a clinical obstacle due to the lack of effective therapies. Acetyl-11-keto-β-boswellic acid (AKBA) is a pentacyclic triterpenic acid isolated from the fragrant gum resin of the Boswellia serrata tree, which has shown intriguing antitumor activity against human cell lines established from PCa, colon cancer, malignant glioma, and leukemia. In this study, we examined the effects of AKBA against docetaxel-resistant PCa in vitro and in vivo as well as its anticancer mechanisms. We showed that AKBA dose-dependently inhibited cell proliferation and induced cell apoptosis in docetaxel-resistant PC3/Doc cells; its IC50 value in anti-proliferation was ∼17 μM. Furthermore, AKBA dose-dependently suppressed the chemoresistant stem cell-like properties of PC3/Doc cells, evidenced by significant decrease in the ability of mammosphere formation and down-regulated expression of a number of stemness-associated genes. The activation of Akt and Stat3 signaling pathways was remarkably enhanced in PC3/Doc cells, which contributed to their chemoresistant stem-like phenotype. AKBA (10-30 μM) dose-dependently suppressed the activation of Akt and Stat3 signaling pathways in PC3/Doc cells. In contrast, overexpression of Akt and Stat3 significantly attenuated the inhibition of AKBA on PC3/Doc cell proliferation. In docetaxel-resistant PCa homograft mice, treatment with AKBA significantly suppresses the growth of homograft RM-1/Doc, equivalent to its human PC3/Doc, but did not decrease their body weight. In summary, we demonstrate that AKBA inhibits the growth inhibition of docetaxel-resistant PCa cells in vitro and in vivo via blocking Akt and Stat3 signaling, thus suppressing their cancer stem cell-like properties.
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13
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Li L, Sun B, Gao Y, Niu H, Yuan H, Lou H. STAT3 contributes to lysosomal-mediated cell death in a novel derivative of riccardin D-treated breast cancer cells in association with TFEB. Biochem Pharmacol 2018; 150:267-279. [PMID: 29476714 DOI: 10.1016/j.bcp.2018.02.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 02/19/2018] [Indexed: 12/24/2022]
Abstract
RDD648, a novel derivative of a natural molecule riccardin D, exhibited potent anticancer activity by targeting lysosomes in vitro and in vivo. Mechanistic studies revealed that RDD648 facilitated STAT3 to translocate into the nucleus, and this activity was involved in lysosome-mediated cell death as evidenced by our finding that inhibition of STAT3 alleviated lysosomal membrane permeabilization. Further investigation indicated that nuclear STAT3 directly interacted with transcription factor TFEB, leading to the partial loss of function of TFEB, which is essential for lysosome turnover. The present study first uncovers that STAT3 contributes to lysosomal-mediated cell death in RDD648-treated breast cancer cells though interacting with TFEB, and the findings may be significant in the design of treatments for breast cancers where STAT3 is constitutively expressed.
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Affiliation(s)
- Lin Li
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of MOE (Ministry of Education), Shandong University, Jinan 250012, China
| | - Bin Sun
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of MOE (Ministry of Education), Shandong University, Jinan 250012, China; National Glycoengineering Research Center, Shandong University, Jinan 250012, China
| | - Yun Gao
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of MOE (Ministry of Education), Shandong University, Jinan 250012, China
| | - Huanmin Niu
- Department of Biochemistry and Molecular Biology, Shandong University, School of Medicine, Jinan 250012, China
| | - Huiqing Yuan
- Department of Biochemistry and Molecular Biology, Shandong University, School of Medicine, Jinan 250012, China.
| | - Hongxiang Lou
- Department of Natural Product Chemistry, Key Lab of Chemical Biology of MOE (Ministry of Education), Shandong University, Jinan 250012, China.
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14
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Xu Q, Liu X, Zhu S, Hu X, Niu H, Zhang X, Zhu D, Nesa EU, Tian K, Yuan H. Hyper-acetylation contributes to the sensitivity of chemo-resistant prostate cancer cells to histone deacetylase inhibitor Trichostatin A. J Cell Mol Med 2018; 22:1909-1922. [PMID: 29327812 PMCID: PMC5824406 DOI: 10.1111/jcmm.13475] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 10/30/2017] [Indexed: 11/30/2022] Open
Abstract
Therapeutic agents are urgently needed for treating metastatic castration‐refractory prostate cancer (mCRPC) that is unresponsive to androgen deprivation and chemotherapy. Our screening assays demonstrated that chemotherapy‐resistant prostate cancer (PCa) cells are more sensitive to HDAC inhibitors than paired sensitive PCa cells, as demonstrated by cell proliferation and apoptosis in vitro and in vivo. Kinetic study revealed that TSA‐induced apoptosis was significantly dependent on enhanced transcription and protein synthesis in an early stage, which subsequently caused ER stress and apoptosis. ChIP analysis indicated that TSA increased H4K16 acetylation, promoting ER stress gene transcription. The changes in Ac‐H4K16, ATF3 and ATF4 were also validated in TSA‐treated animals. Further study revealed the higher enzyme activity of HDACs and an increase in acetylated proteins in resistant cells. The higher nucleocytoplasmic acetyl‐CoA in resistant cells was responsible for elevated acetylation status of protein and a more vigorous growth state. These results strongly support the pre‐clinical application of HDAC inhibitors for treating chemotherapy‐resistant mCRPC.
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Affiliation(s)
- Qingqing Xu
- Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, China
| | - Xiaofei Liu
- Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, China
| | - Shiqin Zhu
- Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, China
| | - Xuelei Hu
- Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, China
| | - Huanmin Niu
- Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, China
| | - Xiulei Zhang
- Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, China
| | - Deyu Zhu
- Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, China
| | - Effat Un Nesa
- Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, China
| | - Keli Tian
- Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, China
| | - Huiqing Yuan
- Department of Biochemistry and Molecular Biology, Shandong University School of Medicine, Jinan, China
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15
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Erlandsson MC, Töyrä Silfverswärd S, Nadali M, Turkkila M, Svensson MND, Jonsson IM, Andersson KME, Bokarewa MI. IGF-1R signalling contributes to IL-6 production and T cell dependent inflammation in rheumatoid arthritis. Biochim Biophys Acta Mol Basis Dis 2017; 1863:2158-2170. [PMID: 28583713 DOI: 10.1016/j.bbadis.2017.06.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 05/09/2017] [Accepted: 06/01/2017] [Indexed: 02/09/2023]
Abstract
BACKGROUND Signalling through insulin-like growth factor 1 receptor (IGF-1R) is essential for cell survival, but may turn pathogenic in uncontrolled tissue growth in tumours. In rheumatoid arthritis (RA), the IGF-1R signalling is activated and supports expansion of the inflamed synovia. AIM In the present study, we assess if disruption of IGF-1R signalling resolves arthritis. MATERIAL AND METHODS Clinical associations of IGF-1R expression in leukocytes of the peripheral blood were studied in 84 RA patients. Consequences of the IGF-1R signalling inhibition for arthritis were studied in mBSA immunised Balb/c mice treated with NT157 compound promoting degradation of insulin receptor substrates. RESULTS In RA patients, high expression of IGF-1R in leukocytes was associated with systemic inflammation as verified by higher expression of NF-kB, serum levels of IL6 and erythrocyte sedimentation rate, and higher pain perception. Additionally, phosphorylated IGF-1R and STAT3 enriched T cells infiltrate in RA synovia. Treatment with NT157 inhibited the phosphorylation of IGF-1R and STAT3 in synovia, and alleviated arthritis and joint damage in mice. It also reduced expression of IGF-1R and despaired ERK and Akt signalling in spleen T cells. This limited IL-6 production, changed RoRgt/FoxP3 balance and IL17 levels. CONCLUSION IGF-1R signalling contributes to T cell dependent inflammation in arthritis. Inhibition of IGF-1R on the level of insulin receptor substrates alleviates arthritis by restricting IL6-dependent formation of Th17 cells and may open for new treatment strategies in RA.
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Affiliation(s)
- Malin C Erlandsson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30 Gothenburg, Sweden
| | - Sofia Töyrä Silfverswärd
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30 Gothenburg, Sweden
| | - Mitra Nadali
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30 Gothenburg, Sweden; Rheumatology Clinic, Sahlgrenska University Hospital, Gröna Stråket 12, 41346 Gothenburg, Sweden
| | - Minna Turkkila
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30 Gothenburg, Sweden
| | - Mattias N D Svensson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30 Gothenburg, Sweden
| | - Ing-Marie Jonsson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30 Gothenburg, Sweden
| | - Karin M E Andersson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30 Gothenburg, Sweden
| | - Maria I Bokarewa
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30 Gothenburg, Sweden; Rheumatology Clinic, Sahlgrenska University Hospital, Gröna Stråket 12, 41346 Gothenburg, Sweden.
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16
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Matsunaga T, Saito H, Endo S, Iguchi K, Soda M, El-Kabbani O, Hara A, Ikari A. Roles of aldo-keto reductases 1B10 and 1C3 and ATP-binding cassette transporter in docetaxel tolerance. Free Radic Res 2016; 50:1296-1308. [PMID: 27629782 DOI: 10.1080/10715762.2016.1236373] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Docetaxel (DTX) is widely used for treatment of inveterate lung and prostate cancers, but its continuous administration elicits the hyposensitivity. Here, we established the DTX-resistant variants of human lung cancer A549 and androgen-independent prostate cancer Du145 cells and found that the resistance development provoked aberrant up-regulations of aldo-keto reductase (AKR) 1B10 and AKR1C3 in A549 and Du145 cells, respectively. In addition, the sensitivity to the DTX toxicity was significantly decreased and increased by overexpression and knockdown of the two AKR isoforms, respectively. Furthermore, the resistant cells exhibited a decreased level of reactive 4-hydroxy-2-nonenal formed during DTX treatment, and the decrease was alleviated by adding the AKR inhibitors, inferring that the two AKRs confer the chemoresistance through elevating the antioxidant properties. The development of DTX resistance was also associated with enhanced expression of an ATP-binding cassette (ABC) transporter ABCB1 among the ABC transporter isoforms. The combined treatment with inhibitors of the two AKRs and ABCB1 additively sensitized the resistant cells to DTX. Intriguingly, the AKR1B10 inhibitor also suppressed the lung cancer cross-resistance against cisplatin. The results suggest that combined treatment with AKRs (1B10 and 1C3) and ABCB1 inhibitors exerts overcoming effect against the cancer resistance to DTX and cisplatin, and can be used as the adjuvant therapy.
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Affiliation(s)
| | - Haruhi Saito
- a Laboratory of Biochemistry, Gifu Pharmaceutical University , Gifu , Japan
| | - Satoshi Endo
- a Laboratory of Biochemistry, Gifu Pharmaceutical University , Gifu , Japan
| | - Kazuhiro Iguchi
- b Laboratory of Community Pharmacy, Gifu Pharmaceutical University , Gifu , Japan
| | - Midori Soda
- c Laboratory of Pharmaceutics , Gifu Pharmaceutical University , Gifu , Japan
| | | | - Akira Hara
- e Faculty of Engineering , Gifu University , Gifu , Japan
| | - Akira Ikari
- a Laboratory of Biochemistry, Gifu Pharmaceutical University , Gifu , Japan
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17
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Harwardt T, Lukas S, Zenger M, Reitberger T, Danzer D, Übner T, Munday DC, Nevels M, Paulus C. Human Cytomegalovirus Immediate-Early 1 Protein Rewires Upstream STAT3 to Downstream STAT1 Signaling Switching an IL6-Type to an IFNγ-Like Response. PLoS Pathog 2016; 12:e1005748. [PMID: 27387064 PMCID: PMC4936752 DOI: 10.1371/journal.ppat.1005748] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 06/16/2016] [Indexed: 12/24/2022] Open
Abstract
The human cytomegalovirus (hCMV) major immediate-early 1 protein (IE1) is best known for activating transcription to facilitate viral replication. Here we present transcriptome data indicating that IE1 is as significant a repressor as it is an activator of host gene expression. Human cells induced to express IE1 exhibit global repression of IL6- and oncostatin M-responsive STAT3 target genes. This repression is followed by STAT1 phosphorylation and activation of STAT1 target genes normally induced by IFNγ. The observed repression and subsequent activation are both mediated through the same region (amino acids 410 to 445) in the C-terminal domain of IE1, and this region serves as a binding site for STAT3. Depletion of STAT3 phenocopies the STAT1-dependent IFNγ-like response to IE1. In contrast, depletion of the IL6 receptor (IL6ST) or the STAT kinase JAK1 prevents this response. Accordingly, treatment with IL6 leads to prolonged STAT1 instead of STAT3 activation in wild-type IE1 expressing cells, but not in cells expressing a mutant protein (IE1dl410-420) deficient for STAT3 binding. A very similar STAT1-directed response to IL6 is also present in cells infected with a wild-type or revertant hCMV, but not an IE1dl410-420 mutant virus, and this response results in restricted viral replication. We conclude that IE1 is sufficient and necessary to rewire upstream IL6-type to downstream IFNγ-like signaling, two pathways linked to opposing actions, resulting in repressed STAT3- and activated STAT1-responsive genes. These findings relate transcriptional repressor and activator functions of IE1 and suggest unexpected outcomes relevant to viral pathogenesis in response to cytokines or growth factors that signal through the IL6ST-JAK1-STAT3 axis in hCMV-infected cells. Our results also reveal that IE1, a protein considered to be a key activator of the hCMV productive cycle, has an unanticipated role in tempering viral replication. Our previous work has shown that the human cytomegalovirus (hCMV) major immediate-early 1 protein (IE1) modulates host cell signaling pathways involving proteins of the signal transducer and activator of transcription (STAT) family. IE1 has also long been known to facilitate viral replication by activating transcription. In this report we demonstrate that IE1 is as significant a repressor as it is an activator of host gene expression. Many genes repressed by IE1 are normally induced via STAT3 signaling triggered by interleukin 6 (IL6) or related cytokines, whereas many genes activated by IE1 are normally induced via STAT1 signaling triggered by interferon gamma (IFNγ). Our results suggest that the repression of STAT3- and the activation of STAT1-responsive genes by IE1 are coupled. By targeting STAT3, IE1 rewires upstream STAT3 to downstream STAT1 signaling. Consequently, genes normally induced by IL6 are repressed while genes normally induced by IFNγ become responsive to IL6 in the presence of IE1. We also demonstrate that, by switching an IL6 to an IFNγ-like response, IE1 tempers viral replication. These results suggest an unanticipated dual role for IE1 in either promoting or limiting hCMV propagation and demonstrate how a key viral regulatory protein merges two central cellular signaling pathways to divert cytokine responses relevant to hCMV pathogenesis.
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Affiliation(s)
- Thomas Harwardt
- Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | - Simone Lukas
- Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | - Marion Zenger
- Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | - Tobias Reitberger
- Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | - Daniela Danzer
- Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | - Theresa Übner
- Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | - Diane C. Munday
- Biomedical Sciences Research Complex, University of St Andrews, St Andrews, United Kingdom
| | - Michael Nevels
- Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
- Biomedical Sciences Research Complex, University of St Andrews, St Andrews, United Kingdom
- * E-mail: (MN); (CP)
| | - Christina Paulus
- Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
- Biomedical Sciences Research Complex, University of St Andrews, St Andrews, United Kingdom
- * E-mail: (MN); (CP)
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18
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Sieprath T, Corne TDJ, Nooteboom M, Grootaert C, Rajkovic A, Buysschaert B, Robijns J, Broers JLV, Ramaekers FCS, Koopman WJH, Willems PHGM, De Vos WH. Sustained accumulation of prelamin A and depletion of lamin A/C both cause oxidative stress and mitochondrial dysfunction but induce different cell fates. Nucleus 2015; 6:236-46. [PMID: 25996284 PMCID: PMC4615646 DOI: 10.1080/19491034.2015.1050568] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The cell nucleus is structurally and functionally organized by lamins, intermediate filament proteins that form the nuclear lamina. Point mutations in genes that encode a specific subset of lamins, the A-type lamins, cause a spectrum of diseases termed laminopathies. Recent evidence points to a role for A-type lamins in intracellular redox homeostasis. To determine whether lamin A/C depletion and prelamin A accumulation differentially induce oxidative stress, we have performed a quantitative microscopy-based analysis of reactive oxygen species (ROS) levels and mitochondrial membrane potential (Δψm) in human fibroblasts subjected to sustained siRNA-mediated knockdown of LMNA and ZMPSTE24, respectively. We measured a highly significant increase in basal ROS levels and an even more prominent rise of induced ROS levels in lamin A/C depleted cells, eventually resulting in Δψm hyperpolarization and apoptosis. Depletion of ZMPSTE24 on the other hand, triggered a senescence pathway that was associated with moderately increased ROS levels and a transient Δψm depolarization. Both knockdowns were accompanied by an upregulation of several ROS detoxifying enzymes. Taken together, our data suggest that both persistent prelamin A accumulation and lamin A/C depletion elevate ROS levels, but to a different extent and with different effects on cell fate. This may contribute to the variety of disease phenotypes witnessed in laminopathies.
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Key Words
- CM-H2DCFDA, 5-(and-6)-chloromethyl-2′,7′-dichlorodihydrofluorescein diacetate
- HGPS, Hutchinson-Gilford progeria syndrome
- LA, lamin A
- LMNAkd, LMNA knockdown
- MEF, mouse embryonic fibroblasts
- NHDF, normal human dermal fibroblasts
- NT, non-targeting
- OCR, oxygen consumtion rate
- PDL, population doubling level
- PLA, prelamin A
- RD, restrictive dermopathy
- ROS, reactive oxygen species
- TBHP, tert-butyl hydrogen peroxide
- TMRM, tetramethyl rhodamine methyl ester
- ZMPSTE24
- ZMPSTE24kd, ZMPSTE24 knockdown
- apoptosis
- hMSCs, human mesenchymal stem cells
- high-content microscopy
- lamin A/C
- laminopathies
- mitochondria
- mitochondrial dysfunction
- oxidative stress
- prelamin A
- senescence
- Δψm, mitochondrial membrane potential
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Affiliation(s)
- Tom Sieprath
- a Laboratory of Cell Biology and Histology; Department of Veterinary Sciences ; University of Antwerp ; Antwerp , Belgium
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