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Kotova PD, Dymova EA, Lyamin OO, Rogachevskaja OA, Kolesnikov SS. PI3 kinase inhibitor PI828 uncouples aminergic GPCRs and Ca 2+ mobilization irrespectively of its primary target. Biochim Biophys Acta Gen Subj 2024; 1868:130649. [PMID: 38823731 DOI: 10.1016/j.bbagen.2024.130649] [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: 02/23/2024] [Revised: 04/20/2024] [Accepted: 05/29/2024] [Indexed: 06/03/2024]
Abstract
The phosphoinositide 3-kinase (PI3K) is involved in regulation of multiple intracellular processes. Although the inhibitory analysis is generally employed for validating a physiological role of PI3K, increasing body of evidence suggests that PI3K inhibitors can exhibit PI3K-unrelated activity as well. Here we studied Ca2+ signaling initiated by aminergic agonists in a variety of different cells and analyzed effects of the PI3K inhibitor PI828 on cell responsiveness. It turned out that PI828 inhibited Ca2+ transients elicited by acetylcholine (ACh), histamine, and serotonin, but did not affect Ca2+ responses to norepinephrine and ATP. Another PI3K inhibitor wortmannin negligibly affected Ca2+ signaling initiated by any one of the tested agonists. Using the genetically encoded PIP3 sensor PH(Akt)-Venus, we confirmed that both PI828 and wortmannin effectively inhibited PI3K and ascertained that this kinase negligibly contributed to ACh transduction. These findings suggested that PI828 inhibited Ca2+ responses to aminergic agonists tested, involving an unknown cellular mechanism unrelated to the PI3K inhibition. Complementary physiological experiments provided evidence that PI828 could inhibit Ca2+ signals induced by certain agonists, by acting extracellularly, presumably, through their surface receptors. For the muscarinic M3 receptor, this possibility was verified with molecular docking and molecular dynamics. As demonstrated with these tools, wortmannin could be bound in the extracellular vestibule at the muscarinic M3 receptor but this did not preclude binding of ACh to the M3 receptor followed by its activation. In contrast, PI828 could sterically block the passage of ACh into the allosteric site, preventing activation of the muscarinic M3 receptor.
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Affiliation(s)
- Polina D Kotova
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Institutskaya Street 3, Pushchino, Russia.
| | - Ekaterina A Dymova
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Institutskaya Street 3, Pushchino, Russia
| | - Oleg O Lyamin
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Institutskaya Street 3, Pushchino, Russia
| | - Olga A Rogachevskaja
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Institutskaya Street 3, Pushchino, Russia
| | - Stanislav S Kolesnikov
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Institutskaya Street 3, Pushchino, Russia
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Cheng Z, Xue K, Xiong C, Zheng Z, Li J, Qiao X. MRPS16 promotes lung adenocarcinoma growth via the PI3K/AKT/Frataxin signalling axis. J Cell Mol Med 2024; 28:e18166. [PMID: 38506080 PMCID: PMC10951875 DOI: 10.1111/jcmm.18166] [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: 06/05/2023] [Revised: 12/26/2023] [Accepted: 01/24/2024] [Indexed: 03/21/2024] Open
Abstract
Although MRPS16 is involved in cancer development, its mechanisms in developing LAUD remain unclear. Herein, qRT-PCR, WB and IHC were utilized for evaluating MRPS16 expression levels, while functional assays besides animal experiments were performed to measure MRPS16 effect on LAUD progression. Using WB, the MRPS16 effect on PI3K/AKT/Frataxin signalling pathway was tested. According to our study, MRPS16 was upregulated in LAUD and was correlated to the advanced TNM stage as well as poor clinical outcomes, which represent an independent prognostic factor. Based on functional assays, MRPS16 is involved in promoting LAUD growth, migration and invasion, which was validated further in subsequent analyses through PI3K/AKT/Frataxin pathway activation. Moreover, MRPS16-knockdown-mediated Frataxin overexpression was shown to restore the reduction in tumour cells proliferation, migration and invasion. Our results revealed that MRPS16 caused an aggressive phenotype to LAUD and was a poor prognosticator; thus, targeting MRPS16 may be effectual in LAUD treatment.
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Affiliation(s)
- Zaixing Cheng
- Department of Thoracic SurgeryUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanHubeiChina
| | - Kaming Xue
- Department of Traditional Chinese MedicineUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanHubeiChina
| | - Cui Xiong
- Department of EndocrinologyUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanHubeiChina
| | - Zhikun Zheng
- Department of Thoracic SurgeryUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanHubeiChina
| | - Jinsong Li
- Department of Thoracic SurgeryUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanHubeiChina
| | - Xinwei Qiao
- Department of Thoracic SurgeryUnion Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanHubeiChina
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Fleeman R. Repurposing Inhibitors of Phosphoinositide 3-kinase as Adjuvant Therapeutics for Bacterial Infections. FRONTIERS IN ANTIBIOTICS 2023; 2:1135485. [PMID: 38983593 PMCID: PMC11233138 DOI: 10.3389/frabi.2023.1135485] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
The rise in antimicrobial resistance and the decline in new antibiotics has created a great need for novel approaches to treat drug resistant bacterial infections. Increasing the burden of antimicrobial resistance, bacterial virulence factors allow for survival within the host, where they can evade host killing and antimicrobial therapy within their intracellular niches. Repurposing host directed therapeutics has great potential for adjuvants to allow for more effective bacterial killing by the host and antimicrobials. To this end, phosphoinositide 3-kinase inhibitors are FDA approved for cancer therapy, but also have potential to eliminate intracellular survival of pathogens. This review describes the PI3K pathway and its potential as an adjuvant target to treat bacterial infections more effectively.
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Affiliation(s)
- Renee Fleeman
- Division of Immunity and Pathogenesis, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida. Orlando, FL 32837
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de Biase D, Malapelle U, De Leo A, Maloberti T, Visani M, Pisapia P, Acquaviva G, Pepe F, Russo G, Iaccarino A, Pession A, Tallini G, Troncone G. Multi-gene custom panels for the characterisation of metastatic colorectal carcinoma in clinical practice: express the role of PIK3CA mutations. J Clin Pathol 2022; 75:488-492. [PMID: 33820865 DOI: 10.1136/jclinpath-2021-207468] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/18/2021] [Accepted: 03/18/2021] [Indexed: 02/05/2023]
Abstract
AIMS In metastatic colorectal carcinomas (mCRC), RAS/RAF genes mutations are first tested to determine the eligibility for anti-EGFR (Epidermal Growth Factor Receptor) therapy in combination with conventional cytotoxic agents. Recent advancements in next-generation sequencing (NGS) have highlighted the potential of multi-gene panels. This multi-gene analysis may provide useful information for the molecular characterisation of mCRC, other than the status of RAS/RAF genes. Aim of this study was to evaluate the feasibility of two NGS custom multi-gene panels in the characterisation of CRC cases and evaluating the relevance of PIK3CA mutation in a routine cohort of consecutive CRC cases. METHODS A total of 961 formalin-fixed and paraffin-embedded specimens from two medical centres (Bologna and Naples) were analysed using two lab-developed NGS multi-gene panels. RESULTS KRAS mutations (56.2%) were the more frequent alterations observed in our cohort. Intriguingly, PIK3CA mutations were more frequent (16.8%) than variants observed in the other two genes nowadays analysed in CRC clinical practice (NRAS and BRAF, 4.2% and 9.6%, respectively). Moreover, in more than 10% of samples, coexistent mutations were detected in our cohort of CRC. CONCLUSIONS Our study demonstrates the feasibility and efficacy of lab-developed targeted multi-gene NGS panels in the clinical practice of CRC. Moreover, the data lead to hypothesise that PIK3CA mutations, together with those of RAS/BRAF, worth to be further investigated in clinical CRC specimens.
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Affiliation(s)
- Dario de Biase
- Department of Pharmacy and Biotechnology, Molecular Diagnostic Unit, University of Bologna, Bologna, Italy
- Division of Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Umberto Malapelle
- Department of Public Health, University Federico II of Naples, Napoli, Italy
| | - Antonio De Leo
- Division of Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medicine (Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale), Molecular Diagnostic Unit, University of Bologna, Azienda USL di Bologna, Bologna, Italy
| | - Thais Maloberti
- Department of Medicine (Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale), Molecular Diagnostic Unit, University of Bologna, Azienda USL di Bologna, Bologna, Italy
| | - Michela Visani
- Department of Medicine (Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale), Molecular Diagnostic Unit, University of Bologna, Azienda USL di Bologna, Bologna, Italy
| | - Pasquale Pisapia
- Department of Public Health, University Federico II of Naples, Napoli, Italy
| | - Giorgia Acquaviva
- Division of Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medicine (Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale), Molecular Diagnostic Unit, University of Bologna, Azienda USL di Bologna, Bologna, Italy
| | - Francesco Pepe
- Sanità Pubblica, University of Naples Federico II, Napoli, Italy
| | - Gianluca Russo
- Department of Public Health, University Federico II of Naples, Napoli, Italy
| | - Antonino Iaccarino
- Department of Public Health, University Federico II of Naples, Napoli, Italy
| | - Annalisa Pession
- Department of Pharmacy and Biotechnology, Molecular Diagnostic Unit, University of Bologna, Bologna, Italy
- Division of Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Giovanni Tallini
- Division of Molecular Pathology Laboratory, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medicine (Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale), Molecular Diagnostic Unit, University of Bologna, Azienda USL di Bologna, Bologna, Italy
| | - Giancarlo Troncone
- Department of Public Health, University Federico II of Naples, Napoli, Italy
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Li HB, Chen JK, Su ZX, Jin QL, Deng LW, Huang G, Shen JN. Cordycepin augments the chemosensitivity of osteosarcoma to cisplatin by activating AMPK and suppressing the AKT signaling pathway. Cancer Cell Int 2021; 21:706. [PMID: 34953496 PMCID: PMC8709946 DOI: 10.1186/s12935-021-02411-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 12/15/2021] [Indexed: 11/18/2022] Open
Abstract
Background Osteosarcoma is the most common primary bone tumor in children and adolescents. However, some patients with osteosarcoma develop resistance to chemotherapy, leading to a poor clinical prognosis. Hence, effective therapeutic agents that can improve the response to chemotherapy drugs to improve the prognosis of patients with osteosarcoma are urgently needed. Cordycepin has recently emerged as a promising antitumor drug candidate. This study aims to explore the effect of cordycepin in suppressing osteosarcoma in vivo and in vitro and the synergistic effect of cordycepin combined with cisplatin and to demonstrate the underlying molecular mechanism. Methods CCK-8 assay was performed to investigate the inhibition effect of cordycepin combined with cisplatin in osteosarcoma cell lines. The colony formation and invasion abilities were measured by colony formation assay and Transwell assay. Osteosarcoma cells apoptosis was detected by flow cytometry. Western blot analysis were used to detect the expression of cell apoptosis-related proteins and AMPK and AKT/mTOR signaling pathway-related proteins. Finally, we performed the in vivo animal model to further explore whether cordycepin and cisplatin exert synergistic antitumor effects. Results Notably, we found that treatment with cordycepin inhibited cell proliferation, invasion, and induced apoptosis in osteosarcoma cells in vitro and in vivo. Moreover, the combination of cordycepin and cisplatin led to marked inhibition of osteosarcoma cell proliferation and invasion and promoted osteosarcoma cell apoptosis in vitro and in vivo. Mechanistically, we demonstrated that cordycepin enhanced the sensitivity of osteosarcoma cells to cisplatin by activating AMPK and inhibiting the AKT/mTOR signaling pathway. Conclusions In brief, this study provides comprehensive evidence that cordycepin inhibits osteosarcoma cell growth and invasion and induces osteosarcoma cell apoptosis by activating AMPK and inhibiting the AKT/mTOR signaling pathway and enhances the sensitivity of osteosarcoma cells to cisplatin, suggesting that cordycepin is a promising treatment for osteosarcoma.
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Affiliation(s)
- Hong-Bo Li
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Jun-Kai Chen
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Ze-Xin Su
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Qing-Lin Jin
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Li-Wen Deng
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Gang Huang
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China. .,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.
| | - Jing-Nan Shen
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China. .,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.
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Inhibition of Cell Proliferation and Metastasis by Scutellarein Regulating PI3K/Akt/NF-κB Signaling through PTEN Activation in Hepatocellular Carcinoma. Int J Mol Sci 2021; 22:ijms22168841. [PMID: 34445559 PMCID: PMC8396260 DOI: 10.3390/ijms22168841] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/29/2021] [Accepted: 08/11/2021] [Indexed: 12/23/2022] Open
Abstract
Scutellarein (SCU) is a well-known flavone with a broad range of biological activities against several cancers. Human hepatocellular carcinoma (HCC) is major cancer type due to its poor prognosis even after treatment with chemotherapeutic drugs, which causes a variety of side effects in patients. Therefore, efforts have been made to develop effective biomarkers in the treatment of HCC in order to improve therapeutic outcomes using natural based agents. The current study used SCU as a treatment approach against HCC using the HepG2 cell line. Based on the cell viability assessment up to a 200 μM concentration of SCU, three low-toxic concentrations of (25, 50, and 100) μM were adopted for further investigation. SCU induced cell cycle arrest at the G2/M phase and inhibited cell migration and proliferation in HepG2 cells in a dose-dependent manner. Furthermore, increased PTEN expression by SCU led to the subsequent downregulation of PI3K/Akt/NF-κB signaling pathway related proteins. In addition, SCU regulated the metastasis with EMT and migration-related proteins in HepG2 cells. In summary, SCU inhibits cell proliferation and metastasis in HepG2 cells through PI3K/Akt/NF-κB signaling by upregulation of PTEN, suggesting that SCU might be used as a potential agent for HCC therapy.
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Yu J, Chen W, Xie W, Chen R, Lin D, You W, Ye W, Zhang H, Lin D, Xu J. Silencing of the CrkL gene reverses the doxorubicin resistance of K562/ADR cells through regulating PI3K/Akt/MRP1 signaling. J Clin Lab Anal 2021; 35:e23817. [PMID: 34114685 PMCID: PMC8373353 DOI: 10.1002/jcla.23817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 02/23/2021] [Accepted: 04/10/2021] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Doxorubicin is a first-line chemotherapy agent on human myelogenous leukemia clinical treatment, but the development of chemoresistance has largely limited curative effect. In this study, we aimed to evaluate the biological function and molecular mechanisms of CrkL to Doxorubicin resistance. METHODS Quantitative reverse transcription-PCR (qRT-PCR) assay was performed to examine the expression of CrkL in K562 and K562/ADR cells. The expression of CrkL was silenced through RNA interference technology. MTT assay and flow cytometry were performed to detect the proliferation inhibition and apoptosis rate after CrkL siRNA transfection. The protein expression changes of PI3K/AKT/MRP1 pathway induced by CrkL siRNA were observed by Western Blot assay. Xenograft tumor model was carried out to observe tumor growth in vivo. RESULTS We observed that silencing of CrkL could effectively increase apoptosis rate induced by doxorubicin and dramatically reversed doxorubicin resistance in K562/ADR cells. Further studies revealed knockdown CrkL expression suppressed PI3K/Akt/MRP1 signaling, which indicated CrkL siRNA reversed doxorubicin effect through regulating PI3K/Akt/MRP1 pathway. In addition, overexpression of MRP1 could evidently reduce apoptosis rate and reversed the inhibitory effects of doxorubicin resistance caused by CrkL siRNA on K562/ADR cells. Finally, in vivo experiments revealed that CrkL silencing acted a tumor-suppressing role in myelogenous leukemia via regulating PI3K/Akt/MRP1 signaling. CONCLUSION Together, we indicated that CrkL is up-regulated in myelogenous leukemia cells and silencing of CrkL could reverse Doxorubicin resistance effectively. These results show a potential novel strategy for intervention chemoresistance in myelogenous leukemia during chemotherapy.
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Affiliation(s)
- Jiang Yu
- Department of Clinical LaboratoryFuzhou Second Hospital Affiliated to Xiamen UniversityFuzhouFujianChina
| | - Wen‐XU Chen
- Department of Clinical LaboratoryFuzhou Second Hospital Affiliated to Xiamen UniversityFuzhouFujianChina
| | - Wen‐Jing Xie
- Department of Clinical LaboratoryFuzhou Second Hospital Affiliated to Xiamen UniversityFuzhouFujianChina
| | - Rong‐Wei Chen
- Department of Clinical LaboratoryFuzhou Second Hospital Affiliated to Xiamen UniversityFuzhouFujianChina
| | - Dan‐Qi Lin
- Department of Pharmacy clinical PharmacyFuzhou Second Hospital Affiliated to Xiamen UniversityFuzhouFujianChina
| | - Wei‐Wei You
- Department of Clinical LaboratoryFuzhou Second Hospital Affiliated to Xiamen UniversityFuzhouFujianChina
| | - Wei‐Lin Ye
- Department of Clinical LaboratoryFuzhou Second Hospital Affiliated to Xiamen UniversityFuzhouFujianChina
| | - Hong‐Qin Zhang
- Department of Pharmacy clinical PharmacyFuzhou Second Hospital Affiliated to Xiamen UniversityFuzhouFujianChina
| | - Dong‐Hong Lin
- Department of Clinical Laboratory MedicineFujian Medical UniversityFuzhouChina
| | - Jian‐Ping Xu
- Department of Clinical Laboratory MedicineFujian Medical UniversityFuzhouChina
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Yu L, Wei J, Liu P. Attacking the PI3K/Akt/mTOR signaling pathway for targeted therapeutic treatment in human cancer. Semin Cancer Biol 2021; 85:69-94. [PMID: 34175443 DOI: 10.1016/j.semcancer.2021.06.019] [Citation(s) in RCA: 152] [Impact Index Per Article: 50.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 06/10/2021] [Accepted: 06/22/2021] [Indexed: 02/08/2023]
Abstract
Cancer is the second leading cause of human death globally. PI3K/Akt/mTOR signaling is one of the most frequently dysregulated signaling pathways observed in cancer patients that plays crucial roles in promoting tumor initiation, progression and therapy responses. This is largely due to that PI3K/Akt/mTOR signaling is indispensable for many cellular biological processes, including cell growth, metastasis, survival, metabolism, and others. As such, small molecule inhibitors targeting major kinase components of the PI3K/Akt/mTOR signaling pathway have drawn extensive attention and been developed and evaluated in preclinical models and clinical trials. Targeting a single kinase component within this signaling usually causes growth arrest rather than apoptosis associated with toxicity-induced adverse effects in patients. Combination therapies including PI3K/Akt/mTOR inhibitors show improved patient response and clinical outcome, albeit developed resistance has been reported. In this review, we focus on revealing the mechanisms leading to the hyperactivation of PI3K/Akt/mTOR signaling in cancer and summarizing efforts for developing PI3K/Akt/mTOR inhibitors as either mono-therapy or combination therapy in different cancer settings. We hope that this review will facilitate further understanding of the regulatory mechanisms governing dysregulation of PI3K/Akt/mTOR oncogenic signaling in cancer and provide insights into possible future directions for targeted therapeutic regimen for cancer treatment, by developing new agents, drug delivery systems, or combination regimen to target the PI3K/Akt/mTOR signaling pathway. This information will also provide effective patient stratification strategy to improve the patient response and clinical outcome for cancer patients with deregulated PI3K/Akt/mTOR signaling.
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Affiliation(s)
- Le Yu
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | | | - Pengda Liu
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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Jadhao M, Tsai EM, Yang HC, Chen YF, Liang SS, Wang TN, Teng YN, Huang HW, Wang LF, Chiu CC. The Long-Term DEHP Exposure Confers Multidrug Resistance of Triple-Negative Breast Cancer Cells through ABC Transporters and Intracellular ROS. Antioxidants (Basel) 2021; 10:949. [PMID: 34208283 PMCID: PMC8230873 DOI: 10.3390/antiox10060949] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 12/18/2022] Open
Abstract
The characteristics of phthalates had been thought to be similar to endocrine disruptors, which increases cancer risk. The role of phthalates in acquired drug resistance remains unclear. In this study, we investigated the effect of di-(2-ethylhexyl) phthalate (DEHP) on acquired drug resistance in breast cancer. MCF7 and MDA-MB-231 breast cancer cells were exposed to long-term physiological concentration of DEHP for more than three months. Long-exposure DEHP permanently attenuated the anti-proliferative effect of doxorubicin with estrogen receptor-independent activity even after withdrawal of DEHP. Long term DEHP exposure significantly reduced ROS (O2-) level in MDA-MB-231 cells while increased in MCF7 cells. ATP-binding cassette (ABC) transporters possess a widely recognized mechanism of drug resistance and are considered a target for drug therapy. Upregulation of ABC family proteins, ABCB-1 and ABCC-1 observed in DEHP-exposed clones compared to doxorubicin-resistant (DoxR) and parental MDA-MB-231 cells. A viability assay showed enhanced multidrug resistance in DEHP-exposed clones against Dox, topotecan, and irinotecan. Inhibition of ABC transporters with tariquidar, enhanced drug cytotoxicity through increased drug accumulation reversing acquired multidrug resistance in MDA-MB-231 breast cancer cells. Tariquidar enhanced Dox cytotoxicity by increasing intracellular ROS production leading to caspase-3 mediated apoptosis. Activation of PI3K/Akt signaling enhanced proliferation and growth of DEHP-exposed MDA-MB-231 cells. Overall, long-term DEHP exposure resulted in acquired multidrug resistance by upregulating ABCB-1 and ABCC1; apart from proliferation PI3K/Akt may be responsible for acquired drug resistance through ABC transporter upregulation. Targeting ABCB1 and ABCC1 with tariquidar may be a promising strategy for reversing the acquired multidrug resistance of triple-negative breast cancer cells.
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Affiliation(s)
- Mahendra Jadhao
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan; or
| | - Eing-Mei Tsai
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan;
- The Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Ho-Chun Yang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (H.-C.Y.); (S.-S.L.)
- Institute of Biomedical Science, National Sun Yat-sen University, Kaohsiung 804, Taiwan;
| | - Yih-Fung Chen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Shih-Shin Liang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (H.-C.Y.); (S.-S.L.)
| | - Tsu-Nai Wang
- Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Yen-Ni Teng
- Department of Biological Sciences and Technology, National University of Tainan, Tainan 700, Taiwan;
| | - Hurng-Wern Huang
- Institute of Biomedical Science, National Sun Yat-sen University, Kaohsiung 804, Taiwan;
| | - Li-Fang Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan; or
| | - Chien-Chih Chiu
- The Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (H.-C.Y.); (S.-S.L.)
- Center for Cancer Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
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10
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Hu Y, Zhang K, Zhu X, Zheng X, Wang C, Niu X, Jiang T, Ji X, Zhao W, Pang L, Qi Y, Li F, Li L, Xu Z, Gu W, Zou H. Synergistic Inhibition of Drug-Resistant Colon Cancer Growth with PI3K/mTOR Dual Inhibitor BEZ235 and Nano-Emulsioned Paclitaxel via Reducing Multidrug Resistance and Promoting Apoptosis. Int J Nanomedicine 2021; 16:2173-2186. [PMID: 33758505 PMCID: PMC7979685 DOI: 10.2147/ijn.s290731] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/26/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Colon cancer is a top lethal cancer in man and women worldwide and drug resistance is the major cause of cancer-related death. Combinational therapy and drug delivery with nanoparticles have been shown to effectively overcome drug resistance in many cancers. We previously reported that nanoemulsion (NE) loaded paclitaxel (PTX) and BEZ235 could synergistically inhibit colon cancer cell growth. PURPOSE To investigate whether NE loaded PTX and BEZ235 can overcome drug resistance and synergistically inhibit drug-resistant colon cancer cell growth in vitro and in vivo. METHODS The in vitro treatment effect on cell viability was assayed using CCK8 kit, cell morphological change was detected by β-tubulin immunofluorescence staining, drug resistance-related proteins were analyzed by Western blotting, and in vivo tumor growth test was performed in nude mice xeno-transplanted with 2 drug-resistant colon cancer cell lines HCT116-LOHP and HT29-DDP. RESULTS Both cell lines were sensitive to PTX but relatively insensitive to BEZ235. PTX combined with BEZ235 synergistically inhibited the proliferation of both cell lines. Nanoemulsion loaded PTX (NE-PTX) reduced the IC50 of PTX to approximately 2/5 of free PTX, indicating a high inhibitory efficacy of NE-PTX. When NE-PTX combined with a low concentration of BEZ235 (50 nM), the IC50 was decreased to approximately 2/3 of free PTX. Moreover, NE-PTX+BEZ235 treatment increased apoptosis, decreased Pgp and ABCC1 expression, and reduced tumor weights compared to the single drug treatment and the control group. These results suggest that nanoemulsion loaded PTX+BEZ235 can overcome drug resistance and improve the inhibitory effect on cancer cell proliferation and tumor growth. CONCLUSION Our study thus provides a possible new approach to treat colon cancer patients with drug resistance.
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Affiliation(s)
- Yali Hu
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
- Department of Oncology, Yongcheng People’s Hospital, Henan, 476600, People’s Republic of China
| | - Kunpeng Zhang
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
| | - Xingyao Zhu
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
| | - Xiuyan Zheng
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
| | - Chao Wang
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
| | - Xiao Niu
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
| | - Teng Jiang
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
| | - Xinhua Ji
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
| | - Weilin Zhao
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
| | - Lijuan Pang
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
| | - Yan Qi
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
| | - Feng Li
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 10000, People’s Republic of China
| | - Li Li
- Australian Institute of Bioengineering and Nanotechnology, University of Queensland, Queensland, 4072, Australia
| | - Zhiping Xu
- Australian Institute of Bioengineering and Nanotechnology, University of Queensland, Queensland, 4072, Australia
| | - Wenyi Gu
- Australian Institute of Bioengineering and Nanotechnology, University of Queensland, Queensland, 4072, Australia
| | - Hong Zou
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Shihezi University, Key Laboratory of Xinjiang Endemic and Ethnic Diseases of the Ministry of Education of China, Xinjiang, 832002, People’s Republic of China
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11
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Zhang J, Song Q, Wu M, Zheng W. The Emerging Roles of Exosomes in the Chemoresistance of Hepatocellular Carcinoma. Curr Med Chem 2021; 28:93-109. [PMID: 32000636 DOI: 10.2174/0929867327666200130103206] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/08/2019] [Accepted: 10/23/2019] [Indexed: 11/22/2022]
Abstract
Hepatocellular carcinoma (HCC) is a common gastrointestinal malignancy with a leading incidence of cancer-related mortality worldwide. Despite the progress of treatment options, there remains low efficacy for patients with intermediate-advanced HCC, due to tumor metastasis, recurrence and chemoresistance. Increasing evidence suggests that exosomes in the tumor microenvironment (TME), along with other extracellular vesicles (EVs) and cytokines, contribute to the drug chemosensitivity of cancer cells. Exosomes, the intercellular communicators in various biological activities, have shown to play important roles in HCC progression. This review summarizes the underlying associations between exosomes and chemoresistance of HCC cells. The exosomes derived from distinct cell types mediate the drug resistance by regulating drug efflux, epithelial-mesenchymal transition (EMT), cancer stem cell (CSC) properties, autophagic phenotypes, as well as the immune response. In summary, TME-related exosomes can be a potential target to reverse chemoresistance and a candidate biomarker of drug efficacy in HCC patients.
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Affiliation(s)
- Jie Zhang
- Department of Chemotherapy, Affiliated Hospital of Nantong University, 20 Xisi Road, 226001 Nantong, Jiangsu, China
| | - Qianqian Song
- Department of Radiology, Wake Forest School of Medicine, One Medical Center Boulevard, Winston-Salem, 27157 NC, United States
| | - Mengna Wu
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, 20 Xisi Road, 226001 Nantong, Jiangsu, China
| | - Wenjie Zheng
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, 20 Xisi Road, 226001 Nantong, Jiangsu, China
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12
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Kuhn N, Klinger B, Uhlitz F, Sieber A, Rivera M, Klotz-Noack K, Fichtner I, Hoffmann J, Blüthgen N, Falk C, Sers C, Schäfer R. Mutation-specific effects of NRAS oncogenes in colorectal cancer cells. Adv Biol Regul 2020; 79:100778. [PMID: 33431353 DOI: 10.1016/j.jbior.2020.100778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 12/21/2020] [Indexed: 11/16/2022]
Abstract
In colorectal cancer (CRC), the prevalence of NRAS mutations (5-9%) is inferior to that of KRAS mutations (40-50%). NRAS mutations feature lately during tumour progression and drive resistance to anti-EGFR therapy in KRAS wild-type tumours. To elucidate specific functions of NRAS mutations in CRC, we expressed doxycycline-inducible G12D and Q61K mutations in the CRC cell line Caco-2. A focused phospho-proteome analysis based on the Bio-Plex platform, which interrogated the activity of MAPK, PI3K, mTOR, STAT, p38, JNK and ATF2, did not reveal significant differences between Caco-2 cells expressing NRASG12D, NRASQ61K and KRASG12V. However, phenotypic read-outs were different. The NRAS Q61K mutation promoted anchorage-independent proliferation and tumorigenicity, similar to features driven by canonical KRAS mutations. In contrast, expression of NRASG12D resulted in reduced proliferation and apoptosis. At the transcriptome level, we saw upregulation of cytokines and chemokines. IL1A, IL11, CXCL8 (IL-8) and CCL20 exhibited enhanced secretion into the culture medium. In addition, RNA sequencing results indicated activation of the IL1-, JAK/STAT-, NFκB- and TNFα signalling pathways. These results form the basis for an NRASG12D-driven inflammatory phenotype in CRC.
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Affiliation(s)
- Natalia Kuhn
- Laboratory of Molecular Tumor Pathology and Cancer Systems Biology, Institute of Pathology, Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117, Berlin, Germany
| | - Bertram Klinger
- Laboratory of Molecular Tumor Pathology and Cancer Systems Biology, Institute of Pathology, Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117, Berlin, Germany; Integrative Research Institute Life Sciences, Humboldt University Berlin, Philippstraße 13, Building 18, D-10115, Berlin, Germany
| | - Florian Uhlitz
- Laboratory of Molecular Tumor Pathology and Cancer Systems Biology, Institute of Pathology, Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117, Berlin, Germany; Integrative Research Institute Life Sciences, Humboldt University Berlin, Philippstraße 13, Building 18, D-10115, Berlin, Germany
| | - Anja Sieber
- Laboratory of Molecular Tumor Pathology and Cancer Systems Biology, Institute of Pathology, Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117, Berlin, Germany; Integrative Research Institute Life Sciences, Humboldt University Berlin, Philippstraße 13, Building 18, D-10115, Berlin, Germany
| | - Maria Rivera
- Experimental Pharmacology and Oncology GmbH, Berlin-Buch, Robert-Rössle-Str. 10, D-13125, Berlin, Buch, Germany
| | - Kathleen Klotz-Noack
- Laboratory of Molecular Tumor Pathology and Cancer Systems Biology, Institute of Pathology, Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117, Berlin, Germany
| | - Iduna Fichtner
- Experimental Pharmacology and Oncology GmbH, Berlin-Buch, Robert-Rössle-Str. 10, D-13125, Berlin, Buch, Germany
| | - Jens Hoffmann
- Experimental Pharmacology and Oncology GmbH, Berlin-Buch, Robert-Rössle-Str. 10, D-13125, Berlin, Buch, Germany
| | - Nils Blüthgen
- Laboratory of Molecular Tumor Pathology and Cancer Systems Biology, Institute of Pathology, Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117, Berlin, Germany; Integrative Research Institute Life Sciences, Humboldt University Berlin, Philippstraße 13, Building 18, D-10115, Berlin, Germany
| | - Christine Falk
- Institute of Transplant Immunology, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625, Hannover, Germany
| | - Christine Sers
- Laboratory of Molecular Tumor Pathology and Cancer Systems Biology, Institute of Pathology, Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117, Berlin, Germany; German Cancer Consortium (DKTK), German Cancer Research Center, Im Neuenheimer Feld 280, D-69120, Heidelberg, Germany.
| | - Reinhold Schäfer
- Laboratory of Molecular Tumor Pathology and Cancer Systems Biology, Institute of Pathology, Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117, Berlin, Germany; German Cancer Consortium (DKTK), German Cancer Research Center, Im Neuenheimer Feld 280, D-69120, Heidelberg, Germany; Comprehensive Cancer Center, Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117, Berlin, Germany.
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PI3K/AKT pathway as a key link modulates the multidrug resistance of cancers. Cell Death Dis 2020; 11:797. [PMID: 32973135 PMCID: PMC7515865 DOI: 10.1038/s41419-020-02998-6] [Citation(s) in RCA: 377] [Impact Index Per Article: 94.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 08/17/2020] [Accepted: 08/27/2020] [Indexed: 12/13/2022]
Abstract
Multidrug resistance (MDR) is the dominant challenge in the failure of chemotherapy in cancers. Phosphatidylinositol 3-kinase (PI3K) is a lipid kinase that spreads intracellular signal cascades and regulates a variety of cellular processes. PI3Ks are considered significant causes of chemoresistance in cancer therapy. Protein kinase B (AKT) is also a significant downstream effecter of PI3K signaling, and it modulates several pathways, including inhibition of apoptosis, stimulation of cell growth, and modulation of cellular metabolism. This review highlights the aberrant activation of PI3K/AKT as a key link that modulates MDR. We summarize the regulation of numerous major targets correlated with the PI3K/AKT pathway, which is further related to MDR, including the expression of apoptosis-related protein, ABC transport and glycogen synthase kinase-3 beta (GSK-3β), synergism with nuclear factor kappa beta (NF-κB) and mammalian target of rapamycin (mTOR), and the regulation of glycolysis.
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Gentiopicroside Ameliorates Oxidative Stress and Lipid Accumulation through Nuclear Factor Erythroid 2-Related Factor 2 Activation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:2940746. [PMID: 32655764 PMCID: PMC7317617 DOI: 10.1155/2020/2940746] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 04/10/2020] [Indexed: 12/15/2022]
Abstract
The activation of nuclear factor erythroid 2-related factor 2 (Nrf2) is closely related to the alleviation of nonalcoholic fatty liver disease (NAFLD) by regulating oxidative stress and lipid homeostasis. Gentiopicroside (GPS), an iridoid glycoside found in the Gentianaceae, possesses anti-inflammatory and antioxidant effects. However, the protective effects of GPS on lipid accumulation and oxidative damage have not been investigated thoroughly in free fatty acid- (FFA-) induced HepG2 cells and tyloxapol- (Ty-) induced hyperlipidemia mice. Cell counting kit-8 assays, Oil Red O staining, Western blotting analysis, extraction of nuclear and cytosolic proteins, and biochemical index assay were employed to explore the mechanisms by which GPS exerts a protective effect on FFA-induced HepG2 cells and Ty-induced hyperlipidemia mouse model. This paper demonstrates that GPS could effectively alleviate NAFLD by elevating cell viability, reducing fatty deposition, downregulating TG, and activating nucleus Nrf2 in FFA-induced HepG2 cells. Meanwhile, GPS significantly regulated the activation of phosphatidylinositol 3-kinase (PI3K)/AKT signaling pathway, Nrf2 antioxidant pathway, peroxisome proliferator-activated receptor α (PPARα), and GPS-inhibited sterol regulatory element-binding protein-1c (SREBP-1c) expression in FFA-stimulated lipid accumulation of HepG2 cells and Ty-treated mice. Interestingly, we highlight that PI3K/AKT inhibitor (LY294002) markedly increased the expression of Nrf2 antioxidant pathway, PPARα, and downregulated SREBP-1c in FFA-stimulated HepG2 cells. For these reasons, we found that the deletion of Nrf2 could lose the protective effects of GPS on the Nrf2 antioxidant pathway and PPARα activation and SREBP-1c inactivation in FFA-stimulated HepG2 cells and Ty-treated mice. GPS treatment had no effect on abnormal lipogenesis and antioxidant enzymes in Ty-induced Nrf2−/− mice. This work gives a new explanation that GPS may be a useful therapeutic strategy for NAFLD through upregulation of the Nrf2 antioxidant pathway, which can alleviate oxidative damage and lipid accumulation.
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15
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Yuan P, Zheng A, Tang Q. Tripartite motif protein 25 is associated with epirubicin resistance in hepatocellular carcinoma cells via regulating PTEN/AKT pathway. Cell Biol Int 2020; 44:1503-1513. [PMID: 32196840 DOI: 10.1002/cbin.11346] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 03/01/2020] [Accepted: 03/19/2020] [Indexed: 12/17/2022]
Affiliation(s)
- Peng Yuan
- Department of Interventional TherapyThe People's Hospital of JianhuJianhu 224700 Jiangsu P. R. China
| | - Aidong Zheng
- Department of Intensive MedicineThe People's Hospital of JianhuJianhu 224700 Jiangsu P. R. China
| | - Qing Tang
- Department of OncologyThe People's Hospital of Funing County in Yancheng CityYancheng 224400 Jiangsu P. R. China
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16
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Lin C, Chen S, Lien H, Lin S, Lee T. Targeting the PI3K/STAT3 axis modulates age-related differences in macrophage phenotype in rats with myocardial infarction. J Cell Mol Med 2019; 23:6378-6392. [PMID: 31313516 PMCID: PMC6714172 DOI: 10.1111/jcmm.14526] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 03/24/2019] [Accepted: 06/11/2019] [Indexed: 02/06/2023] Open
Abstract
Ageing is associated with impaired repair mechanisms in cardiovascular diseases. Macrophages contribute to cardiac fibrosis after myocardial infarction (MI). The phosphatidyl-inositol-3-kinase (PI3K) pathway has been shown to play a role in cardiac remodelling after MI. It remained unclear whether n-butylidenephthalide, a major component of Angelica sinensis, can attenuate cardiac fibrosis by regulating the PI3K/signal transducer and activator of transcription 3 (STAT3)-mediated macrophage phenotypes in ageing rats after MI. Twenty-four hours after ligation of the left anterior descending artery, young (2-month-old) and ageing (18-month-old) male Wistar rats were treated with either vehicle or n-butylidenephthalide for 4 weeks. There were similar infarct sizes in both age groups. Compared with young rats, ageing rats exhibited significant increased cardiac fibrosis after MI, which can be attenuated after administering n-butylidenephthalide. MI was associated with decreased activities of PI3K and STAT3 in ageing rats compared with young rats. In both age groups, n-butylidenephthalide effectively provided a significant increase of STAT3 phosphorylation, STAT3 activity, STAT3 nuclear translocation, myocardial IL-10 levels and the percentage of M2c macrophage and a decrease of myofibroblast infiltration. The effects of n-butylidenephthalide on increased IL-10 levels were reversed by LY294002 or S3I-201. Furthermore, LY294002 abolished the STAT3 phosphorylation, whereas PI3K activity was not affected following the inhibition of STAT3. In conclusions, the host environment is responsible for ageing-related myofibroblast dysregulation in response to MI which can be improved by administering n-butylidenephthalide via macrophage differentiation towards M2 phenotype by targeting the PI3K/STAT3 axis.
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Affiliation(s)
- Chih‐Chan Lin
- Department of Medical ResearchChi‐Mei Medical CenterTainanTaiwan
| | - Syue‐yi Chen
- Cardiovascular Institute, An Nan Hospital, China Medical UniversityTainanTaiwan
| | - Hsiao‐Yin Lien
- Department of pharmacyKaohsiung Veterans general hospital Tainan branchTainanTaiwan
| | - Shinn‐Zong Lin
- Bioinnovation Center, Tzu Chi foundationDepartment of NeurosurgeryBuddhist Tzu Chi General Hospital, Tzu Chi UniversityYunlinTaiwan
| | - Tsung‐Ming Lee
- Cardiovascular Institute, An Nan HospitalTainanTaiwan
- Department of MedicineChina Medical UniversityTaichungTaiwan
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Doxorubicin as a fluorescent reporter identifies novel MRP1 (ABCC1) inhibitors missed by calcein-based high content screening of anticancer agents. Biomed Pharmacother 2019; 118:109289. [PMID: 31401398 DOI: 10.1016/j.biopha.2019.109289] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 07/28/2019] [Accepted: 07/30/2019] [Indexed: 01/30/2023] Open
Abstract
Multidrug resistance protein 1 (MRP1/ABCC1) actively transports a variety of drugs, toxic molecules and important physiological substrates across the plasma membrane. It can confer broad-spectrum multidrug resistance and can decrease the bioavailability of many important drugs. Substrates of MRP1 include anti-cancer agents, antibiotics, antivirals, antidepressants and anti-inflammatory drugs. Using calcein as a fluorescent reporter in a high content uptake assay, we recently reported the identification of 12 MRP1 inhibitors after screening an anti-cancer library of 386 compounds. Here, we describe the development of a new high content imaging-based uptake assay using doxorubicin as a fluorescent reporter. Screening the same anti-cancer library of 386 compounds, the new assay identified a total of 28 MRP1 inhibitors including 16 inhibitors that have not been previously reported as inhibitors of MRP1. Inhibition of MRP1 activity was confirmed using flow cytometry and confocal microscopy-based transport assays. Six drugs (afatinib, celecoxib, doramapimod, mifepristone, MK-2206 and rosiglitazone) were evaluated for their ability to reverse resistance of MRP1-overexpressing H69AR lung cancer cells against vincristine, doxorubicin and etoposide. Mifepristone and doramapimod were most effective in reversal of resistance against vincristine while mifepristone and rosiglitazone were most successful in resensitizing H69AR cells against doxorubicin. Furthermore, resistance towards etoposide was completely reversed in the presence of celecoxib or doramapimod. Selected drugs were also evaluated for resistance reversal in HEK cells that overexpress P-glycoprotein or breast cancer resistance protein. Our results indicate mifepristone and doramapimod as pan inhibitors of these three drug transporters while celecoxib exhibited selective MRP1 inhibition. Together, our findings signify the importance of MRP1 in drug discovery and demonstrate the effectiveness and value of doxorubicin-based high content screening approach. Anti-cancer agents that exhibit MRP1 inhibition may be used to reverse multidrug resistance or to improve the efficacy and reduce the toxicity of various cancer chemotherapies. On the other hand, anti-cancer drugs that did not interact with MRP1 carry a low risk for developing MRP1-mediated resistance.
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Abdulkhaleq MM, Al-Ghafari AB, Yezerski A, Al Doghaither HA, Abusanad AM, Omar UM. Novel association between heterozygous genotype of single nucleotide polymorphism C218T in drug transporter ABCC1 gene and increased risk of colon cancer. Saudi Med J 2019; 40:224-229. [PMID: 30834416 PMCID: PMC6468215 DOI: 10.15537/smj.2019.3.23650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Objectives: To determine the role of G128C and C218T variants in ABCC1 gene with the risk of developing colon cancer in Jeddah, Kingdom of Saudi Arabia. Methods: This case-control study was conducted on 51 colon cancer patients and 65 controls from King Abdulaziz University Hospital and King Abdullah Medical City in the period from January 2015 to April 2017, and was approved by the Unit of Biomedical Ethics (no: 261-15). Experiments were performed in the experimental biochemistry unit at King Fahd Medical Research Center. The genotype distributions and allele frequencies were determined by polymerase chain reaction-restriction fragments length polymorphism (PCR-RFLP) and DNA sequencing. A Chi-square test was used to determine allele and genotype distributions, odds ratio (OR), risk ratio (RR) and 95% confidence intervals (CI). P-values of <0.05 were considered statistically significant. Results: The results showed a novel association between heterozygous (CT) genotype for variant C218T and increased risk of colon cancer [OR=3.4, 95% CI (1.56-7.48), and RR=1.92, 95% CI (1.26-2.93), p=0.002]. These ratios were correlated with high-grade stages (III and IV). In contrast, for variant G128C, there was no significant association with the risk of developing colon cancer. Conclusion: The novel findings of the study revealed that the CT genotype of variant C218T in ABCC1 gene may increase the risk of developing colon cancer.
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Affiliation(s)
- Meaad M Abdulkhaleq
- Biochemistry Department, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia. E-mail.
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Fekete JT, Győrffy B. ROCplot.org: Validating predictive biomarkers of chemotherapy/hormonal therapy/anti-HER2 therapy using transcriptomic data of 3,104 breast cancer patients. Int J Cancer 2019; 145:3140-3151. [PMID: 31020993 DOI: 10.1002/ijc.32369] [Citation(s) in RCA: 172] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 04/02/2019] [Accepted: 04/17/2019] [Indexed: 11/10/2022]
Abstract
Systemic therapy of breast cancer can include chemotherapy, hormonal therapy and targeted therapy. Prognostic biomarkers are able to predict survival and predictive biomarkers are able to predict therapy response. In this report, we describe the initial release of the first available online tool able to identify gene expression-based predictive biomarkers using transcriptomic data of a large set of breast cancer patients. Published gene expression data of 36 publicly available datasets were integrated with treatment data into a unified database. Response to therapy was determined using either author-reported pathological complete response data (n = 1,775) or relapse-free survival status at 5 years (n = 1,329). Treatment data includes chemotherapy (n = 2,108), endocrine therapy (n = 971) and anti-human epidermal growth factor receptor 2 (HER2) therapy (n = 267). The transcriptomic database includes 20,089 unique genes and 54,675 probe sets. Gene expression and therapy response are compared using receiver operating characteristics and Mann-Whitney tests. We demonstrate the utility of the pipeline by cross-validating 23 paclitaxel resistance-associated genes in different molecular subtypes of breast cancer. An additional set of established biomarkers including TP53 for chemotherapy in Luminal breast cancer (p = 1.01E-19, AUC = 0.769), HER2 for trastuzumab therapy (p = 8.4E-04, AUC = 0.629) and PGR for hormonal therapy (p = 8.6E-05, AUC = 0.7), are also endorsed. The tool is designed to validate and rank new predictive biomarker candidates in real time. By analyzing the selected genes in a large set of independent patients, one can select the most robust candidates and quickly eliminate those that are most likely to fail in a clinical setting. The analysis tool is accessible at www.rocplot.org.
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Affiliation(s)
- János T Fekete
- 2nd Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Balázs Győrffy
- 2nd Department of Pediatrics, Semmelweis University, Budapest, Hungary.,MTA TTK Lendület Cancer Biomarker Research Group, Institute of Enzymology, Hungarian Academy of Sciences, Budapest, Hungary
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Lee TM, Harn HJ, Chiou TW, Chuang MH, Chen CH, Chuang CH, Lin PC, Lin SZ. Preconditioned adipose-derived stem cells ameliorate cardiac fibrosis by regulating macrophage polarization in infarcted rat hearts through the PI3K/STAT3 pathway. J Transl Med 2019; 99:634-647. [PMID: 30683900 DOI: 10.1038/s41374-018-0181-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 11/10/2018] [Accepted: 11/17/2018] [Indexed: 11/09/2022] Open
Abstract
Stem cells can modify macrophage phenotypes; however, the mechanisms remain unclear. We investigated whether n-butylidenephthalide (BP) primed adipose-derived stem cells (ADSCs) attenuated cardiac fibrosis via regulating macrophage phenotype by a PI3K/STAT3-dependent pathway in postinfarcted rats. Male Wistar rats after coronary ligation were allocated to receive either intramyocardial injection of vehicle, ADSCs (1 × 106 cells), BP-preconditioned ADSCs, (BP + lithium)-preconditioned ADSCs, (BP + LY294002)-preconditioned ADSCs, and (BP + S3I-201)-preconditioned ADSCs. ADSCs were primed for 16 h before implantation. BP-pretreated ADSCs increased the cell viability compared with naive ADSCs in the in vitro experiments. Infarct sizes were similar among the infarcted groups at the acute and chronic stages of infarction. At day 3 after infarction, post-infarction was associated with increased M1 macrophage infiltration, which was inhibited by administering naive ADSCs. Compared with naive ADSCs, BP-preconditioned ADSCs provided a significant increase of Akt and STAT3 phosphorylation, STAT3 activity, STAT3 nuclear translocation, myocardial IL-10 levels, and the percentage of M2 macrophage infiltration. The effects of BP on M2 polarization were reversed by LY294002 or S3I-201. Furthermore, the phosphorylation of both Akt and STAT3 was abolished by LY294002, whereas Akt phosphorylation was not affected following the inhibition of STAT3. The addition of lithium did not have additional effects compared with BP alone. After 4 weeks of implantation, ADSCs remained in the myocardium, and reduced fibrosis and improved cardiac function. BP-preconditioned ADSCs provided superior cardioprotection, greater ADSC engraftment, and antifibrotic effects compared with naive ADSCs. These results suggest that BP-pretreated ADSCs polarize macrophages into M2 cells more efficiently than naive ADSCs via the PI3K/STAT3 pathway.
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Affiliation(s)
- Tsung-Ming Lee
- Cardiovascular Institute, An Nan Hospital, China Medical University, Tainan, Taiwan.,Department of Medicine, China Medical University, Taichung, Taiwan
| | - Horng-Jyh Harn
- Bioinnovation Center, Tzu Chi Foundation, Hualien, Taiwan.,Department of Pathology, Buddhist Tzu Chi General Hospital, Tzu Chi University, Hualien, Taiwan
| | - Tzyy-Wen Chiou
- Department of Life Science and Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan
| | - Ming-Hsi Chuang
- Department of Technology Management, Chung Hua University, Hsinchu, Taiwan.,Gwo Xi Stem Cell Applied Technology, Hsinchu, Taiwan
| | | | | | - Po-Cheng Lin
- Gwo Xi Stem Cell Applied Technology, Hsinchu, Taiwan
| | - Shinn-Zong Lin
- Bioinnovation Center, Tzu Chi Foundation, Hualien, Taiwan. .,Department of Neurosurgery, Buddhist Tzu Chi General Hospital, Tzu Chi University, Hualien, Taiwan.
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21
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Silbermann K, Stefan SM, Elshawadfy R, Namasivayam V, Wiese M. Identification of Thienopyrimidine Scaffold as an Inhibitor of the ABC Transport Protein ABCC1 (MRP1) and Related Transporters Using a Combined Virtual Screening Approach. J Med Chem 2019; 62:4383-4400. [PMID: 30925062 DOI: 10.1021/acs.jmedchem.8b01821] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A virtual screening protocol with combination of similarity search and pharmacophore modeling was applied to virtually screen a large compound library to gain new scaffolds regarding ABCC1 inhibition. Biological investigation of promising candidates revealed four compounds as ABCC1 inhibitors, three of them with scaffolds not associated with ABCC1 inhibition until now. The best hit molecule-a thienopyrimidine-was a moderately potent, competitive inhibitor of the ABCC1-mediated transport of calcein AM which also sensitized ABCC1-overexpressing cells toward daunorubicin. Further evaluation showed that it was a moderately potent, competitive inhibitor of the ABCB1-mediated transport of calcein AM, and noncompetitive inhibitor of the ABCG2-mediated pheophorbide A transport. In addition, the thienopyrimidine could also sensitize ABCB1- as well as ABCG2-overexpressing cells toward daunorubicin and SN-38, respectively, in concentration ranges that qualified it as one of the ten best triple ABCC1/ABCB1/ABCG2 inhibitors in the literature. Besides, three more new multitarget inhibitors were identified by this virtual screening approach.
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Affiliation(s)
- Katja Silbermann
- Pharmaceutical Chemistry II, Pharmaceutical Institute , Rheinische Friedrich-Wilhelms-University of Bonn , An der Immenburg 4 , 53121 Bonn , Germany
| | - Sven Marcel Stefan
- Pharmaceutical Chemistry II, Pharmaceutical Institute , Rheinische Friedrich-Wilhelms-University of Bonn , An der Immenburg 4 , 53121 Bonn , Germany
| | - Randa Elshawadfy
- Pharmaceutical Chemistry II, Pharmaceutical Institute , Rheinische Friedrich-Wilhelms-University of Bonn , An der Immenburg 4 , 53121 Bonn , Germany
| | - Vigneshwaran Namasivayam
- Pharmaceutical Chemistry II, Pharmaceutical Institute , Rheinische Friedrich-Wilhelms-University of Bonn , An der Immenburg 4 , 53121 Bonn , Germany
| | - Michael Wiese
- Pharmaceutical Chemistry II, Pharmaceutical Institute , Rheinische Friedrich-Wilhelms-University of Bonn , An der Immenburg 4 , 53121 Bonn , Germany
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22
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Wiese M, Stefan SM. The A‐B‐C of small‐molecule ABC transport protein modulators: From inhibition to activation—a case study of multidrug resistance‐associated protein 1 (ABCC1). Med Res Rev 2019; 39:2031-2081. [DOI: 10.1002/med.21573] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 02/26/2019] [Accepted: 03/05/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Michael Wiese
- Pharmaceutical Institute, Rheinische Friedrich‐Wilhelms‐University of Bonn Bonn Germany
| | - Sven Marcel Stefan
- Pharmaceutical Institute, Rheinische Friedrich‐Wilhelms‐University of Bonn Bonn Germany
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23
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Canipari R, Mangialardo C, Di Paolo V, Alfei F, Ucci S, Russi V, Santaguida MG, Virili C, Segni M, Misiti S, Centanni M, Verga Falzacappa C. Thyroid hormones act as mitogenic and pro survival factors in rat ovarian follicles. J Endocrinol Invest 2019; 42:271-282. [PMID: 29934772 DOI: 10.1007/s40618-018-0912-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 06/11/2018] [Indexed: 12/15/2022]
Abstract
PURPOSE Thyroid disorders are clinically associated with impaired fertility in women, and these abnormalities can be improved by restoring the euthyroid state. The exact mechanisms of thyroid effect on female fertility are not well known; however, it is conceivable that thyroid hormones (THs) might act on ovarian physiology via receptors in granulosa cells. This work is aimed at evaluating the effects of THs on non-tumoral granulosa cells and follicles. METHODS Freshly isolated rat ovarian follicles and granulosa cells were exposed to T3 or T4 (THs). Cell growth and viability were evaluated by cell counting and the MTT assay, respectively, follicle growth was evaluated by volume measurements. Apoptosis was evaluated by the TUNEL assay and active Caspase 3 staining. rGROV cells were exposed to T3, and apoptosis was induced by serum deprivation. Bcl2, Bcl-2-associated X protein (BAX), Akt and pAkt expression were evaluated by western blot. RESULTS T3 induced a 40% increase in follicle volume (after 7 days). This increase was presumably due to the observed decrease (33%) in the apoptotic rate of the granulosa cell population. Both T3 and T4 caused a dose-dependent increase in rat granulosa cell number and viability. In addition, THs decreased the cell apoptotic rate in a dose-dependent manner. In both conditions, T3 appeared to be more efficient. In rGROV cells, 100 nM T3 induced cell growth and, in the absence of growth factors, reduced cell apoptosis by 40%, downregulating Caspase 3 and BAX. This effect was associated with an increase in pAkt levels. The involvement of the PI3 K pathway was confirmed by the ability of the PI3 K specific inhibitor (LY-294,002) to abolish T3 pro-survival action. CONCLUSIONS THs influence cell survival of ovarian granulosa cells. This effect likely contributes to the TH-induced follicle volume increase.
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Affiliation(s)
- R Canipari
- DAHFMO, Unit of Histology and Medical Embryology, Sapienza, University of Rome, Rome, Italy
| | - C Mangialardo
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza, University of Rome, Rome, Italy
| | - V Di Paolo
- DAHFMO, Unit of Histology and Medical Embryology, Sapienza, University of Rome, Rome, Italy
- Department of Hematology/Oncology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - F Alfei
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza, University of Rome, Rome, Italy
| | - S Ucci
- Pasteur Institute of Rome, Rome, Italy
| | - V Russi
- Pasteur Institute of Rome, Rome, Italy
| | - M G Santaguida
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza, University of Rome, Rome, Italy
| | - C Virili
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza, University of Rome, Rome, Italy
| | - M Segni
- Department of Pediatrics and Pediatric Neuropsychiatry, Sapienza, University of Rome, Rome, Italy
| | - S Misiti
- Department of Experimental Medicine, Sapienza, University of Rome, Rome, Italy
| | - M Centanni
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza, University of Rome, Rome, Italy
| | - C Verga Falzacappa
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza, University of Rome, Rome, Italy.
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24
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Xue B, Li FC, Tian JH, Li JX, Cheng XY, Hu JH, Hu JS, Li B. Titanium nanoparticles influence the Akt/Tor signal pathway in the silkworm, Bombyx mori, silk gland. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2018; 99:e21470. [PMID: 29709078 DOI: 10.1002/arch.21470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Various nanoparticles, such as silver nanoparticles (AgNPs) and titanium nanoparticles (TiO2 NPs) are increasingly used in industrial processes. Because they are released into the environment, research into their influence on the biosphere is necessary. Among its other effects, dietary TiO2 NPs promotes silk protein synthesis in silkworms, which prompted our hypothesis that TiO2 NPs influence protein kinase B (Akt)/Target of rapamycin (Tor) signaling pathway (Akt/Tor) signaling in their silk glands. The Akt/Tor signaling pathway is a principle connector integrating cellular reactions to growth factors, metabolites, nutrients, protein synthesis, and stress. We tested our hypothesis by determining the influence of dietary TiO2 NPs (for 72 h) and, separately, of two Akt/Tor pathway inhibitors (LY294002 and rapamycin) on expression of Akt/Tor signaling pathway genes and proteins in the silk glands. TiO2 NPs treatments led to increased accumulation of mRNAs for Akt, Tor1 and Tor2 by 1.6-, 12.1-, and 4.8-fold. Dietary inhibitors led to 2.6- to 4-fold increases in mRNAs encoding Akt and substantial decreases in mRNAs encoding Tor1 and Tor2. Western blot analysis showed that dietary TiO2 NPs increased the phosphorylation of Akt and its downstream proteins. LY294002 treatments led to inhibition of Akt phosphorylation and its downstream proteins and rapamycin treatments similarly inhibited the phosphorylation of Tor-linked downstream proteins. These findings support our hypothesis that TiO2 NPs influence Akt/Tor signaling in silk glands. The significance of this work is identification of specific sites of TiO2 NPs actions.
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Affiliation(s)
- Bin Xue
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, P.R. China
| | - Fan-Chi Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, P.R. China
| | - Jiang-Hai Tian
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, P.R. China
| | - Jin-Xin Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, P.R. China
| | - Xiao-Yu Cheng
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, P.R. China
| | - Jia-Huan Hu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, P.R. China
| | - Jing-Sheng Hu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, P.R. China
| | - Bing Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, P.R. China
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, P.R. China
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25
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Kai W, Yating S, Lin M, Kaiyong Y, Baojin H, Wu Y, Fangzhou Y, Yan C. Natural product toosendanin reverses the resistance of human breast cancer cells to adriamycin as a novel PI3K inhibitor. Biochem Pharmacol 2018; 152:153-164. [DOI: 10.1016/j.bcp.2018.03.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 03/20/2018] [Indexed: 11/16/2022]
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26
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Stefan SM, Wiese M. Small-molecule inhibitors of multidrug resistance-associated protein 1 and related processes: A historic approach and recent advances. Med Res Rev 2018; 39:176-264. [DOI: 10.1002/med.21510] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/05/2018] [Accepted: 04/28/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Sven Marcel Stefan
- Pharmaceutical Institute; Rheinische Friedrich-Wilhelms-University; Bonn Germany
| | - Michael Wiese
- Pharmaceutical Institute; Rheinische Friedrich-Wilhelms-University; Bonn Germany
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27
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Yang C, Hou A, Yu C, Dai L, Wang W, Zhang K, Shao H, Ma J, Xu W. Kanglaite reverses multidrug resistance of HCC by inducing apoptosis and cell cycle arrest via PI3K/AKT pathway. Onco Targets Ther 2018; 11:983-996. [PMID: 29520149 PMCID: PMC5833758 DOI: 10.2147/ott.s153814] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Multidrug resistance (MDR) frequently contributes to the failure of chemotherapeutic treatments in patients diagnosed with hepatocellular carcinoma (HCC). Revealing the molecular mechanism of MDR is indispensable for the development of effective chemotherapeutic drugs. PURPOSE Due to the low-toxicity modulators to inhibit MDR, we considered that Kanglaite (KLT) is a potential agent for reversing MDR in HCC. MATERIALS AND METHODS BEL-7402/5-fluorouracil (5-FU) and HepG2/adriamycin (ADM) were analyzed for cell viability, colony formation assay, cell scratch assay, and cell cycle analysis and apoptosis assay by flow cytometry. The expression of PARP, caspase-3, Bax, Bcl-2, CDC25C, Cyclin B1 and phosphorylation of PTEN, PI3K, and AKT in HepG2/ADM cells were detected by western blotting. RESULTS The proliferation of drug-resistant cell lines BEL-7402/5-FU and HepG2/ADM pretreated with KLT was significantly inhibited when compared with drug alone. KLT could increase the accumulation of ADM in HepG2/ADM cells. In this study, we found that KLT treatment notably reduced cell viability, induced apoptosis and cell cycle arrest in human HepG2/ADM and BEL-7402/5-FU cells, and effectively reversed the MDR by p-glycoprotein (P-gp) inhibition. Moreover, KLT decreased the phosphorylation of AKT and PI3K in KLT-treated HepG2/ADM cells. These data together implied that KLT might reverse drug resistance in HCC by blocking the PI3K/AKT signaling. CONCLUSION We demonstrated that KLT reversed MDR of human HCC by inducing apoptosis and cell cycle arrest via the PI3K/AKT signaling pathway.
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Affiliation(s)
| | - Aihua Hou
- Yantai Hospital of Traditional Chinese Medicine
- Binzhou Medical University, Yantai, China
| | - Chunfeng Yu
- Yantai Hospital of Traditional Chinese Medicine
| | | | - Wen Wang
- Yantai Hospital of Traditional Chinese Medicine
| | | | | | - Jinghua Ma
- Yantai Hospital of Traditional Chinese Medicine
| | - Wenjuan Xu
- Binzhou Medical University, Yantai, China
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28
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Li AJ, Li HG, Tang EJ, Wu W, Chen Y, Jiang HH, Lin MB, Yin L. PIK3CA and TP53 mutations predict overall survival of stage II/III colorectal cancer patients. World J Gastroenterol 2018; 24:631-640. [PMID: 29434452 PMCID: PMC5799864 DOI: 10.3748/wjg.v24.i5.631] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/13/2017] [Accepted: 12/20/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the predictive value of PIK3CA and TP53 mutation status in colorectal cancer (CRC) patients treated with 5-fluorouracil-based chemotherapy.
METHODS In this study, a total of 315 patients with histologically proven CRC were enrolled from Yangpu Hospital affiliated to Shanghai Tongji University between 2007 and 2011. Of these patients, 241 with stage II/III CRC received 5-fluorouracil-based adjuvant chemotherapy. Formalin-fixed paraffin-embedded lesion samples of the patients with curatively resected CRC were collected. Next-generation sequencing was performed to identify somatic gene mutations. The correlation of PIK3CA and TP53 mutation status with overall survival (OS) was analyzed using a Cox proportional hazard model and the Kaplan-Meier method.
RESULTS Among the 241 patients with stage II/III in this cohort, the PIK3CA and/or TP53 mutation was detected in 177 patients, among which 54 patients had PIK3CA and TP53 double mutations. The PIK3CA or TP53 mutation was not significantly correlated with OS in univariate and multivariate analyses. Compared with patients without PIK3CA and TP53 mutations, those with double PIK3CA-TP53 mutations showed a significantly worse survival (univariate HR = 2.21; 95%CI: 1.15-4.24; multivariate HR = 2.02; 95%CI: 1.04-3.91). The PIK3CA mutation located in the kinase domain showed a trend toward a shorter OS compared with wild-type tumors (multivariate HR = 1.56; 95%CI: 1.00-2.44; P = 0.052). The Kaplan-Meier curve showed that patients harboring the PIK3CA mutation located in the kinase domain had a worse clinical outcome than those with wild-type status (Log-rank P = 0.041)
CONCLUSION Double mutation of PIK3CA and TP53 is correlated with a shorter OS in stage II/III CRC patients treated with 5-fluorouracil-based therapy.
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Affiliation(s)
- A-Jian Li
- Department of General Surgery, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Hua-Guang Li
- Center for Translational Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200090, China
| | - Er-Jiang Tang
- Center for Translational Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200090, China
| | - Wei Wu
- Department of General Surgery, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200090, China
| | - Ying Chen
- Center for Translational Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200090, China
| | - Hui-Hong Jiang
- Department of General Surgery, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200090, China
| | - Mou-Bin Lin
- Department of General Surgery, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200090, China
| | - Lu Yin
- Department of General Surgery, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, China
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Meng Y, Wang L, Xu J, Zhang Q. AP4 positively regulates LAPTM4B to promote hepatocellular carcinoma growth and metastasis, while reducing chemotherapy sensitivity. Mol Oncol 2018; 12:373-390. [PMID: 29337428 PMCID: PMC5830630 DOI: 10.1002/1878-0261.12171] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 12/17/2017] [Accepted: 01/02/2018] [Indexed: 12/28/2022] Open
Abstract
Polymorphisms of the lysosomal-associated protein transmembrane-4 beta (LAPTM4B) gene are related to various forms of tumour susceptibility, which led us to hypothesize that some unique transcription factors targeting this polymorphism region may affect the biological function of LAPTM4B in tumour progression. In this study, we found that the transcription factor AP4 directly binds to the polymorphism region of the LAPTM4B gene promoter and induces its transcription. In addition, we demonstrated that AP4 promotes hepatocellular carcinoma (HCC) cell proliferation and metastasis and depresses chemotherapy sensitivity via LAPTM4B by activating the PI3K/AKT signalling pathway and caspase-dependent pathway. Interestingly, we found that AP4 could not only regulate LAPTM4B by directly binding to the promoter, but also be regulated via a positive feedback mechanism involving LAPTM4B acting on c-myc. Finally, we showed that AP4 and LAPTM4B are highly coexpressed in HCC tissues, and their coexpression may be a marker of poor prognosis. These findings provide evidence of the expression and functional coupling between AP4 and LAPTM4B and shed light on the regulation of LAPTM4B and its function in liver cancer.
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Affiliation(s)
- Yue Meng
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
| | - Lu Wang
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
| | - Jianjun Xu
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
| | - Qingyun Zhang
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
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30
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Huang YN, Guo X, You LP, Wang CJ, Liu JQ, Li YL. Lysosome-associated protein transmembrane4β is involved in multidrug resistance processes of colorectal cancer. Oncol Lett 2017; 14:5229-5234. [PMID: 29113158 PMCID: PMC5656031 DOI: 10.3892/ol.2017.6899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 06/15/2017] [Indexed: 12/14/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common reasons for cancer-associated mortality worldwide. The present study aimed to investigate the drug resistance mechanism of the oxaliplatin (OXA)-resistant HT-29 cell line (HT-29/L-OHP) and examine the expression of lysosome-associated protein transmembrane 4β (LAPTM4β), a drug resistance-associated gene. In the present study, a drug concentration gradient method was used to establish the drug-resistant HT-29/L-OHP cell line. Cell apoptosis was analyzed by flow cytometry. LAPTM4β mRNA expression was examined by reverse transcription-quantitative polymerase chain reaction analysis and LAPTM4β-35 expression was examined by western blot analysis. Cell morphology of the HT-29/L-OHP drug-resistant cell line was examined. The results indicated that the intercellular space among HT-29 cells was small, with aggregative growth while the intercellular space among HT-29/L-OHP cells was large, with scattered growth. The apoptotic rate in HT-29/L-OHP cells (11.7%) was significantly lower compared with that in HT-29 cells (17.7%) (P<0.05). LAPTM4β mRNA expression in HT-29/L-OHP cells was significantly increased compared with that in HT-29 cells (P<0.05). The relative expression of LAPTM4β-35 protein in HT-29/L-OHP cells was significantly higher compared with that inHT-29 cells (P<0.05). In conclusion, LAPTM4β may be involved in the multidrug resistance processes of CRC. Therefore, LAPTM4β may serve as a novel biomarker for drug resistance of CRC.
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Affiliation(s)
- Yue-Nan Huang
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Xin Guo
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Liu-Ping You
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Chun-Jing Wang
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Jia-Qi Liu
- Department of General Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Yun-Long Li
- Intensive Care Unit, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
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31
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Liu B, Liu Y, Zhao L, Pan Y, Shan Y, Li Y, Jia L. Upregulation of microRNA-135b and microRNA-182 promotes chemoresistance of colorectal cancer by targeting ST6GALNAC2 via PI3K/AKT pathway. Mol Carcinog 2017; 56:2669-2680. [PMID: 28767179 DOI: 10.1002/mc.22710] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 07/23/2017] [Accepted: 07/28/2017] [Indexed: 12/17/2022]
Abstract
MicroRNAs (miRNAs) are increasingly involved in the development of drug resistance, including 5-fluorouracil (5-FU) resistance in colorectal cancer (CRC). Aberrant sialylation is correlated with human CRC. The study was to explore whether miR-135b and miR-182 modulated 5-FU chemoresistance of CRC by targeting ST6GALNAC2 via PI3K/AKT pathway. MiR-135b and miR-182 were found to be up-regulated in CRC tissues and 5-FU resistant CRC cell lines. Forced miR-135b and miR-182 expression also affected ST6GALNAC2 levels. Using reporter-gene assay, ST6GALNAC2 was identified as direct target of miR-135b and miR-182, while ST6GALNAC2 expression exhibited patterns opposite to that of miR-135b and miR-182 in CRC samples and cell lines. Interestingly, up-regulation of miR-135b or miR-182 increased drug resistance and proliferation, but decreased apoptosis in 5-FU resistant CRC cell lines. Suppression of these miRNAs implicated an inverse function, while altered expression of ST6GALNAC2 mediated CRC progression upon transfection with miR-135b/-182 mimic or inhibitor. Furthermore, miR-135b and miR-182 were clarified to regulate the activity of phosphoinositide-3 kinase (PI3K)/AKT pathway. Inhibition of the PI3K/AKT pathway enhanced the chemosensitivity to 5-FU in HCT-8/5-FU and LoVo/5-FU. Taken together, miR-135b and miR-182 may reverse the resistance to 5-FU in CRC cells by targeting ST6GALNAC2 via PI3K/AKT pathway, which render potential chemotherapy targets for the treatment of CRC.
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Affiliation(s)
- Bing Liu
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Yanfeng Liu
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Lifen Zhao
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Yue Pan
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Yujia Shan
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Yang Li
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Li Jia
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
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32
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Cao Z, Liang N, Yang H, Li S. Visfatin mediates doxorubicin resistance in human non-small-cell lung cancer via Akt-mediated up-regulation of ABCC1. Cell Prolif 2017; 50. [PMID: 28762597 DOI: 10.1111/cpr.12366] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES Non-small-cell lung cancer (NSCLC) is one of the leading causes of cancer deaths worldwide. Increasing levels of visfatin are correlated with worse clinical prognosis of NSCLC. However, the effects of visfatin on drug resistant are still not well illustrated. MATERIALS AND METHODS Effects of visfatin on drug resistant cells were checked by CCK-8 kit. Gene and protein variations were measured by real-time PCR and western blot analysis, respectively. RESULTS Our present data confirmed that expression of visfatin was significantly increased in NSCLC cells and tissues. In addition, protein and mRNA expression of visfatin were significantly elevated in doxorubicin (Dox) resistance of NSCLC cells when compared with their corresponding sensitivity parental cells. Overexpression of visfatin can down-regulate the Dox sensitivity of NSCLC cells and up-regulate the mRNA and protein expression of ABCC1, while has no effect on ABCB1. Knockdown of visfatin can down-regulate the expression of ABCC1 in Dox-resistant NSCLC cells. Visfatin can increase the phosphorylation and nuclear localization of Akt in NSCLC cells. LY294002 can decrease the expression of multidrug resistance protein-1 (MRP1) in NSCLC Dox-resistant cells. Chromatin immunoprecipitation assays showed that overexpression of visfatin can significantly increase the binding of Akt with the promoter of ABCC1 in both A549 and H1793 cells. CONCLUSIONS These data showed that visfatin can decrease Dox sensitivity of NSCLC cells via activation of Akt/MRP1. It indicated that inhibition of visfatin signals might be a promising therapeutic strategy for the management of chemoresistance of NSCLC patients.
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Affiliation(s)
- Zhili Cao
- Department of Thoracic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Naixin Liang
- Department of Thoracic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Huaxia Yang
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Shanqing Li
- Department of Thoracic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
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Kianoush F, Nematollahi M, Waterfield JD, Brunette DM. Regulation of RAW264.7 macrophage polarization on smooth and rough surface topographies by galectin-3. J Biomed Mater Res A 2017; 105:2499-2509. [PMID: 28498622 DOI: 10.1002/jbm.a.36107] [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: 12/05/2016] [Revised: 05/04/2017] [Accepted: 05/08/2017] [Indexed: 11/05/2022]
Abstract
Recognition of topographical features induces phenotypic changes in macrophages although the receptors and signaling pathways are not completely characterized. As integrin molecules in focal adhesions/podosomes are in intimate contact with topography and topography modulates the NFkB pathway through cholesterol enriched raft-associated adhesive signaling structures we hypothesized that a cell-surface signaling complex comprised of galectin-3 together with its ligand CD98 and integrinβ1 is important for topography-directed lineage determination. This study used polished, sand blasted and acid etched (SLA) surfaces and two novel grooved topographies (G1 and G2) produced by anisotropic etching of Si <1 1 0> to evaluate the role of galectin-3 in macrophage polarization in RAW 264.7 macrophages, as determined by gene expression and morphology. In the presence of the galectin-3 inhibitor, lactose, the M2 marker (mannose receptor) was down-regulated while the M1 marker (iNOS) was up-regulated on smooth and rough surfaces. This skewing of phenotype suggests a role for galectin-3 in macrophage polarization towards the M2 phenotype. Additionally, we evaluated the role of PI3K on polarization using PI3K inhibitor LY294002. We found that the M2 marker was down-regulated on both PO (surface polished) and G1 surfaces implicating PI3K in lineage determination. We also found that surface topography altered cell morphology; macrophages had a larger area on G2 surfaces. Lactose treatment significantly reduced the cell area on all topographies suggesting that the galectin-3 is also involved in signaling complexes triggering the rearrangement of the actin cytoskeleton. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 2499-2509, 2017.
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Affiliation(s)
- F Kianoush
- Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, British Columbia, Canada
| | - M Nematollahi
- Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, British Columbia, Canada
| | - J D Waterfield
- Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, British Columbia, Canada
| | - D M Brunette
- Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, British Columbia, Canada
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Das S, Kohr M, Dunkerly-Eyring B, Lee DI, Bedja D, Kent OA, Leung AKL, Henao-Mejia J, Flavell RA, Steenbergen C. Divergent Effects of miR-181 Family Members on Myocardial Function Through Protective Cytosolic and Detrimental Mitochondrial microRNA Targets. J Am Heart Assoc 2017; 6:JAHA.116.004694. [PMID: 28242633 PMCID: PMC5524005 DOI: 10.1161/jaha.116.004694] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Background MicroRNA (miRNA) is a type of noncoding RNA that can repress the expression of target genes through posttranscriptional regulation. In addition to numerous physiologic roles for miRNAs, they play an important role in pathophysiologic processes affecting cardiovascular health. Previously, we reported that nuclear encoded microRNA (miR‐181c) is present in heart mitochondria, and importantly, its overexpression affects mitochondrial function by regulating mitochondrial gene expression. Methods and Results To investigate further how the miR‐181 family affects the heart, we suppressed miR‐181 using a miR‐181‐sponge containing 10 repeated complementary miR‐181 “seed” sequences and generated a set of H9c2 cells, a cell line derived from rat myoblast, by stably expressing either a scrambled or miR‐181‐sponge sequence. Sponge‐H9c2 cells showed a decrease in reactive oxygen species production and reduced basal mitochondrial respiration and protection against doxorubicin‐induced oxidative stress. We also found that miR‐181a/b targets phosphatase and tensin homolog (PTEN), and the sponge‐expressing stable cells had increased PTEN activity and decreased PI3K signaling. In addition, we have used miR‐181a/b−/− and miR‐181c/d−/− knockout mice and subjected them to ischemia‐reperfusion injury. Our results suggest divergent effects of different miR‐181 family members: miR‐181a/b targets PTEN in the cytosol, resulting in an increase in infarct size in miR‐181a/b−/− mice due to increased PTEN signaling, whereas miR‐181c targets mt‐COX1 in the mitochondria, resulting in decreased infarct size in miR‐181c/d−/− mice. Conclusions The miR‐181 family alters the myocardial response to oxidative stress, notably with detrimental effects by targeting mt‐COX1 (miR‐181c) or with protection by targeting PTEN (miR‐181a/b).
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Affiliation(s)
- Samarjit Das
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD
| | - Mark Kohr
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
| | | | - Dong I Lee
- Department of Cardiology, Johns Hopkins School of Medicine, Baltimore, MD
| | - Djahida Bedja
- Department of Cardiology, Johns Hopkins School of Medicine, Baltimore, MD.,Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia
| | - Oliver A Kent
- Princess Margaret Cancer Centre, University of Toronto, Ontario, Canada
| | - Anthony K L Leung
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
| | - Jorge Henao-Mejia
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine University of Pennsylvania, Philadelphia, PA.,Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA.,Institute for Immunology, Perelman School of Medicine, Philadelphia, PA
| | - Richard A Flavell
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
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Lee TM, Harn HJ, Chiou TW, Chuang MH, Chen CH, Lin PC, Lin SZ. Targeting the pathway of GSK-3β/nerve growth factor to attenuate post-infarction arrhythmias by preconditioned adipose-derived stem cells. J Mol Cell Cardiol 2017; 104:17-30. [PMID: 28130118 DOI: 10.1016/j.yjmcc.2017.01.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/01/2017] [Accepted: 01/23/2017] [Indexed: 10/20/2022]
Abstract
Adipose-derived stem cell (ADSC) transplantation is a promising new therapy to improve cardiac function after myocardial infarction. However, its low efficacy of transdifferentiation hampers its usefulness. Glycogen synthase kinase-3β (GSK-3β) signal has been shown to play a role in preconditioning-induced cardioprotection. We assessed whether n-butylidenephthalide (BP) primed ADSCs can attenuate arrhythmias by a GSK-3β-dependent pathway after myocardial infarction. Male Wistar rats after coronary ligation was randomly allocated to receive intramyocardial injection of vehicle, ADSCs, BP-preconditioned ADSCs, (BP+lithium)-preconditioned ADSCs, (BP+SB216763)-preconditioned ADSCs, and (BP+LY294002)-preconditioned ADSCs. ADSCs were primed for 16h before implantation. After 4weeks of implantation, ADSCs were retained in myocardium, reduced fibrosis and improved cardiac function. Sympathetic hyperinnervation was blunted after administering ADSCs, assessed by immunofluorescent analysis, and Western blotting and real-time quantitative RT-PCR of nerve growth factor. Arrhythmic scores during programmed stimulation in the ADSC-treated infarcted rats were significantly lower than vehicle. BP-preconditioned ADSCs had superior cardioprotection, greater ADSC engraftment and transdifferentiation, and antiarrhythmic effects compared with ADSCs alone. Simultaneously, BP increased the levels of phospho-Akt and down-regulated GSK-3β activity. The effects of BP against sympathetic hyperinnervation were blocked by LY294002, a PI3K inhibitor. Addition of either lithium or SB216763 did not have additional effects compared with BP alone. Compared with ADSC alone, BP-primed ADSC implantation improved stem cell engraftment and attenuated sympathetic hyperinnervation and arrhythmias through a PI3K/Akt/GSK-3β-dependent pathway, suggesting that a synergic action was achieved between BP pretreatment and ADSCs.
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Affiliation(s)
- Tsung-Ming Lee
- Department of Medicine, Cardiology Section, China Medical University-An Nan Hospital, Tainan, Taiwan; Department of Medicine, China Medical University, Taichung, Taiwan
| | - Horng-Jyh Harn
- Bioinnovation Center, Tzu Chi Foundation; Department of Pathology, Buddhist Tzu Chi General Hospital, Tzu Chi University
| | - Tzyy-Wen Chiou
- Department of Life Science, Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan
| | - Ming-Hsi Chuang
- Gwo Xi Stem Cell Applied Technology, Hsinchu, Taiwan; Department of Bioinformatics, Chung Hua University, Hsinchu, Taiwan
| | | | - Po-Cheng Lin
- Gwo Xi Stem Cell Applied Technology, Hsinchu, Taiwan
| | - Shinn-Zong Lin
- Bioinnovation Center, Tzu Chi Foundation; Department of Neurosurgery, Buddhist Tzu Chi General Hospital, Tzu Chi University.
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ASIC1a mediates the drug resistance of human hepatocellular carcinoma via the Ca 2+/PI3-kinase/AKT signaling pathway. J Transl Med 2017; 97:53-69. [PMID: 27918554 PMCID: PMC5220138 DOI: 10.1038/labinvest.2016.127] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 10/20/2016] [Accepted: 10/28/2016] [Indexed: 01/12/2023] Open
Abstract
Chemotherapy is the main treatment method of patients with advanced liver cancer. However, drug resistance is a serious problem in the treatment of hepatocellular carcinoma (HCC). Acid sensing ion channel 1a (ASIC1a) is a H+-gated cation channel; it mediates tumor cell migration and invasion, which suggests that it is involved in the development of malignant tumors. Therefore, we studied the relationship between ASIC1a and drug resistance in human hepatocellular carcinoma. In our study, we found that ASIC1a is highly expressed in human HCC tissue, and that its levels were significantly increased in resistant HCC cells Bel7402/FU and HepG2/ADM. Inhibiting the activity of ASIC1a enhances the chemosensitivity of Bel7402/FU and HepG2/ADM cells. The overexpression of ASIC1a contributed to drug resistance in Bel7402 and HepG2 cells, whereas knockdown of ASIC1a overcame drug resistance in Bel7402/FU and HepG2/ADM cells. We further demonstrated that ASIC1a mediated calcium influx, which resulted in the activation of PI3K/AKT signaling and increased drug resistance. These data suggest that ASIC1a/Ca2+/PI3K/AKT signaling represents a novel pathway that regulates drug resistance, thus offering a potential target for chemotherapy of HCC.
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Wang H, Li Q, Tang S, Li M, Feng A, Qin L, Liu Z, Wang X. The role of long noncoding RNA HOTAIR in the acquired multidrug resistance to imatinib in chronic myeloid leukemia cells. Hematology 2016; 22:208-216. [DOI: 10.1080/10245332.2016.1258152] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
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CAMK2γ antagonizes mTORC1 activation during hepatocarcinogenesis. Oncogene 2016; 36:2446-2456. [PMID: 27819676 PMCID: PMC5408319 DOI: 10.1038/onc.2016.400] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 09/16/2016] [Accepted: 09/23/2016] [Indexed: 02/07/2023]
Abstract
Hepatocellular carcinoma (HCC) is one of the most deadly cancers that still lacks effective treatments. Dysregulation of kinase signaling has frequently been reported to contribute to HCC. In this study, we used bioinformatic approaches to identify kinases that regulate gene expression changes in human HCCs and two murine HCC models. We identified a role for calcium/calmodulin-dependent protein kinases II gamma isoform (CAMK2γ) in hepatocarcinogenesis. CAMK2γ-/- mice displayed severely enhanced chemical-induced hepatocarcinogenesis compared with wild-type controls. Mechanistically, CAMK2γ deletion potentiates hepatic activation of mechanistic target of rapamycin complex 1 (mTORC1), which results in hyperproliferation of hepatocytes. Inhibition of mTORC1 by rapamycin effectively attenuates the compensatory proliferation of hepatocytes in CAMK2γ-/- livers. We further demonstrated that CAMK2γ suppressed growth factor- or insulin-induced mTORC1 activation by inhibiting IRS1/AKT signaling. Taken together, our results reveal a novel mechanism by which CAMK2γ antagonizes mTORC1 activation during hepatocarcinogenesis.
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da Fonseca LM, da Silva VA, Freire-de-Lima L, Previato JO, Mendonça-Previato L, Capella MAM. Glycosylation in Cancer: Interplay between Multidrug Resistance and Epithelial-to-Mesenchymal Transition? Front Oncol 2016; 6:158. [PMID: 27446804 PMCID: PMC4916178 DOI: 10.3389/fonc.2016.00158] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 06/10/2016] [Indexed: 12/18/2022] Open
Abstract
The expression of unusual glycan structures is a hallmark of cancer progression, and their functional roles in cancer biology have been extensively investigated in epithelial-to-mesenchymal transition (EMT) models. EMT is a physiological process involved in embryonic development and wound healing. It is characterized by loss of epithelial cell polarity and cell adhesion, permitting cell migration, and thus formation of new epithelia. However, this process is unwanted when occurring outside their physiological limit, resulting in fibrosis of organs and progression of cancer and metastasis. Several studies observed that EMT is related to the acquisition of multidrug resistance (MDR) phenotype, a condition in which cancer cells acquire resistance to multiple different drugs, which has virtually nothing in common. However, although some studies suggested interplay between these two apparently distinct phenomena, almost nothing is known about this possible relationship. A common pathway to them is the need for glycosylation, a post-translational modification that can alter biological function. Thus, this review intends to compile the main facts obtained until now in these two areas, as an effort to unravel the relationship between EMT and MDR.
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Affiliation(s)
- Leonardo Marques da Fonseca
- Laboratório de Glicobiologia, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro , Rio de Janeiro, Rio de Janeiro , Brazil
| | - Vanessa Amil da Silva
- Laboratório de Glicobiologia, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro , Rio de Janeiro, Rio de Janeiro , Brazil
| | - Leonardo Freire-de-Lima
- Laboratório de Glicobiologia, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro , Rio de Janeiro, Rio de Janeiro , Brazil
| | - José Osvaldo Previato
- Laboratório de Glicobiologia, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro , Rio de Janeiro, Rio de Janeiro , Brazil
| | - Lucia Mendonça-Previato
- Laboratório de Glicobiologia, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro , Rio de Janeiro, Rio de Janeiro , Brazil
| | - Márcia Alves Marques Capella
- Laboratório de Glicobiologia, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil; Laboratório de P&D em Práticas Integrativas e Complementares, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
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40
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Villar VH, Vögler O, Barceló F, Martín-Broto J, Martínez-Serra J, Ruiz-Gutiérrez V, Alemany R. Down-Regulation of AKT Signalling by Ursolic Acid Induces Intrinsic Apoptosis and Sensitization to Doxorubicin in Soft Tissue Sarcoma. PLoS One 2016; 11:e0155946. [PMID: 27219337 PMCID: PMC4878803 DOI: 10.1371/journal.pone.0155946] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 05/06/2016] [Indexed: 01/11/2023] Open
Abstract
Several important biological activities have been attributed to the pentacyclic triterpene ursolic acid (UA), being its antitumoral effect extensively studied in human adenocarcinomas. In this work, we focused on the efficacy and molecular mechanisms involved in the antitumoral effects of UA, as single agent or combined with doxorubicin (DXR), in human soft tissue sarcoma cells. UA (5-50 μM) strongly inhibited (up to 80%) the viability of STS cells at 24 h and its proliferation in soft agar, with higher concentrations increasing apoptotic death up to 30%. UA treatment (6-9 h) strongly blocked the survival AKT/GSK3β/β-catenin signalling pathway, which led to a concomitant reduction of the anti-apoptotic proteins c-Myc and p21, altogether resulting in the activation of intrinsic apoptosis. Interestingly, UA at low concentrations (10-15 μM) enhanced the antitumoral effects of DXR by up to 2-fold, while in parallel inhibiting DXR-induced AKT activation and p21 expression, two proteins implicated in antitumoral drug resistance and cell survival. In conclusion, UA is able to induce intrinsic apoptosis in human STS cells and also to sensitize these cells to DXR by blocking the AKT signalling pathway. Therefore, UA may have beneficial effects, if used as nutraceutical adjuvant during standard chemotherapy treatment of STS.
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Affiliation(s)
- Victor Hugo Villar
- Group of Clinical and Translational Research, Department of Biology, Institut Universitari d’Investigacions en Ciències de la Salut (IUNICS), University of the Balearic Islands, Palma de Mallorca, Spain
| | - Oliver Vögler
- Group of Clinical and Translational Research, Department of Biology, Institut Universitari d’Investigacions en Ciències de la Salut (IUNICS), University of the Balearic Islands, Palma de Mallorca, Spain
| | - Francisca Barceló
- Group of Clinical and Translational Research, Department of Biology, Institut Universitari d’Investigacions en Ciències de la Salut (IUNICS), University of the Balearic Islands, Palma de Mallorca, Spain
| | - Javier Martín-Broto
- Group of Clinical and Translational Research, Department of Biology, Institut Universitari d’Investigacions en Ciències de la Salut (IUNICS), University of the Balearic Islands, Palma de Mallorca, Spain
- Department of Oncology, University Hospital Virgen del Rocío and Biomedicine Institute of Sevilla (IBIS), Sevilla, Spain
| | - Jordi Martínez-Serra
- Group of Clinical and Translational Research, Department of Biology, Institut Universitari d’Investigacions en Ciències de la Salut (IUNICS), University of the Balearic Islands, Palma de Mallorca, Spain
- Department of Hematology, University Hospital Son Espases, Palma de Mallorca, Spain
| | - Valentina Ruiz-Gutiérrez
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Sevilla, Spain
- CIBER:CB06/03 Fisiopatología de la Obesidad y la Nutrición, CIBERobn, Instituto de Salud, Carlos III (ISCIII), Spain
| | - Regina Alemany
- Group of Clinical and Translational Research, Department of Biology, Institut Universitari d’Investigacions en Ciències de la Salut (IUNICS), University of the Balearic Islands, Palma de Mallorca, Spain
- CIBER:CB06/03 Fisiopatología de la Obesidad y la Nutrición, CIBERobn, Instituto de Salud, Carlos III (ISCIII), Spain
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Yao J, Wei X, Lu Y. Chaetominine reduces MRP1-mediated drug resistance via inhibiting PI3K/Akt/Nrf2 signaling pathway in K562/Adr human leukemia cells. Biochem Biophys Res Commun 2016; 473:867-873. [PMID: 27038543 DOI: 10.1016/j.bbrc.2016.03.141] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 03/29/2016] [Indexed: 01/08/2023]
Abstract
Drug resistance limits leukemia treatment and chaetominine, a cytotoxic alkaloid that promotes apoptosis in a K562 human leukemia cell line via the mitochondrial pathway was studied with respect to chemoresistance in a K562/Adr human resistant leukemia cell line. Cytotoxicity assays indicated that K562/Adr resistance to adriamycin (ADR) did not occur in the presence of chaetominine and that chaetominine increased chemosensitivity of K562/Adr to ADR. Data show that chaetominine enhanced ADR-induced apoptosis and intracellular ADR accumulation in K562/Adr cells. Accordingly, chaetominine induced apoptosis by upregulating ROS, pro-apoptotic Bax and downregulating anti-apoptotic Bcl-2. RT-PCR and western-blot confirmed that chaetominine suppressed highly expressed MRP1 at mRNA and protein levels. But little obvious alternation of another drug transporter MDR1 mRNA was observed. Furthermore, inhibition of MRP1 by chaetominine relied on inhibiting Akt phosphorylation and nuclear Nrf2. In summary, chaetominine strongly reverses drug resistance by interfering with the PI3K/Akt/Nrf2 signaling, resulting in reduction of MRP1-mediated drug efflux and induction of Bax/Bcl-2-dependent apoptosis in an ADR-resistant K562/Adr leukemia cell line.
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Affiliation(s)
- Jingyun Yao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, PR China; Shanghai Collaborative Innovation Center for Biomanufacturing Technology, 130 Meilong Road, Shanghai, PR China
| | - Xing Wei
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, PR China; Shanghai Collaborative Innovation Center for Biomanufacturing Technology, 130 Meilong Road, Shanghai, PR China
| | - Yanhua Lu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, PR China; Shanghai Collaborative Innovation Center for Biomanufacturing Technology, 130 Meilong Road, Shanghai, PR China.
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Yuan Q, Zhan L, Zhang LL, Wang Q, Liu J, Jiang ZY, Hu XM, Yuan XC. Stanniocalcin 2 induces oxaliplatin resistance in colorectal cancer cells by upregulating P-glycoprotein. Can J Physiol Pharmacol 2016; 94:929-35. [PMID: 27245421 DOI: 10.1139/cjpp-2015-0530] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Multidrug resistance (MDR) limits the anticancer effects of chemotherapy in patients with metastatic colorectal cancer (CRC). Oxaliplatin is a common component of combinational therapeutic regimens administered to patients with metastatic CRC; however, it is also used as a constituent of adjuvant therapy for patients at a risk of recurrent disease. In the present study, we investigated the role of stanniocalcin 2 (STC2) in chemoresistance. STC2 knockdown sensitized chemoresistant CRC cells to oxaliplatin. Moreover, the expression of exogenous STC2 in chemonaïve CRC cells induced oxaliplatin resistance. We confirmed that STC2 upregulated P-glycoprotein (P-gp) expression in CRC cells. Furthermore, shRNA against phosphoinositide 3-kinase (PI3K) or Akt inhibited the action of STC2 on P-gp upregulation and MDR in CRC. To our knowledge, this is the first report to demonstrate the induction of oxaliplatin resistance in CRC cells in response to STC2 stimulation of P-gp via the PI3K/Akt signaling pathway.
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Affiliation(s)
- Qiong Yuan
- a Department of Pharmacology, Medical College, Wuhan University of Science and Technology, Wuhan 430065, China.,c Drug Research Base of Cardiovascular and Cerebral Vascular, Medical College, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Lin Zhan
- a Department of Pharmacology, Medical College, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Li-Li Zhang
- b Department of Histology and Embryology, Medical College, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Qiang Wang
- d Department of Immunology, Medical College, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Juan Liu
- a Department of Pharmacology, Medical College, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Zhen-Yu Jiang
- a Department of Pharmacology, Medical College, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Xia-Min Hu
- a Department of Pharmacology, Medical College, Wuhan University of Science and Technology, Wuhan 430065, China.,c Drug Research Base of Cardiovascular and Cerebral Vascular, Medical College, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Xin-Chu Yuan
- b Department of Histology and Embryology, Medical College, Wuhan University of Science and Technology, Wuhan 430065, China
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Schmitt SM, Stefan K, Wiese M. Pyrrolopyrimidine Derivatives as Novel Inhibitors of Multidrug Resistance-Associated Protein 1 (MRP1, ABCC1). J Med Chem 2016; 59:3018-33. [PMID: 26943020 DOI: 10.1021/acs.jmedchem.5b01644] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Five series of pyrrolo[3,2-d]pyrimidines were synthesized and evaluated with respect to potency and selectivity toward multidrug resistance-associated protein 1 (MRP1, ABCC1). This transport protein is a major target to overcome multidrug resistance in cancer patients. We investigated differently substituted pyrrolopyrimidines using the doxorubicin selected and MRP1 overexpressing small cell lung cancer cell line H69 AR in a calcein AM and daunorubicin cell accumulation assay. New compounds with high potency and selectivity were identified. Piperazine residues at position 4 bearing large phenylalkyl side chains proved to be beneficial for MRP1 inhibition. Its replacement by an amino group led to decreased activity. Aliphatic and aliphatic-aromatic variations at position 5 and 6 revealed compounds with IC50 values in high nanomolar range. All investigated compounds had low affinity toward P-glycoprotein (P-gp, ABCB1). Pyrrolopyrimidines with small substituents showed moderate inhibition against breast cancer resistance protein (BCRP, ABCG2).
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Affiliation(s)
- Sven Marcel Schmitt
- Pharmaceutical Institute, University of Bonn , An der Immenburg 4, 53121 Bonn, Germany
| | - Katja Stefan
- Pharmaceutical Institute, University of Bonn , An der Immenburg 4, 53121 Bonn, Germany
| | - Michael Wiese
- Pharmaceutical Institute, University of Bonn , An der Immenburg 4, 53121 Bonn, Germany
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miR-188-5p inhibits tumour growth and metastasis in prostate cancer by repressing LAPTM4B expression. Oncotarget 2016; 6:6092-104. [PMID: 25714029 PMCID: PMC4467424 DOI: 10.18632/oncotarget.3341] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Accepted: 01/03/2015] [Indexed: 12/29/2022] Open
Abstract
Elucidation of the molecular targets and pathways regulated by the tumour-suppressive miRNAs can shed light on the oncogenic and metastatic processes in prostate cancer (PCa). Using miRNA profiling analysis, we find that miR-188-5p was significantly down-regulated in metastatic PCa. Down-regulation of miR-188-5p is an independent prognostic factor for poor overall and biochemical recurrence-free survival. Restoration of miR-188-5p in PCa cells (PC-3 and LNCaP) significantly suppresses proliferation, migration and invasion in vitro and inhibits tumour growth and metastasis in vivo. We also find overexpression of miR-188-5p in PC-3 cells can significantly enhance the cells' chemosensitivity to adriamycin. LAPTM4B is subsequently identified as a direct target of miR-188-5p in PCa, and is found to be significantly over-expressed in PCa. Knockdown of LAPTM4B phenotypically copies miR-188-5p-induced phenotypes, whereas ectopic expression of LAPTM4B reverses the effects of miR-188-5p. We also find that restoration of miR-188-5p can inhibit the PI3K/AKT signaling pathway via the suppression of LAPTM4B. Taken together, this is the first report unveils that miR-188-5p acts as a tumour suppressor in PCa and may therefore serve as a useful therapeutic target for the development of new anticancer therapy.
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45
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Kumbhare RM, Dadmal TL, Kumar D, Ramaiah MJ, Kota A, Chowdhury D, Appalanaidu K, Rao YK, Hyder S, Devi TA, Bhadra MP. Fluorinated thiazolidinols cause cell death in A549 lung cancer cells via PI3K/AKT/mTOR and MAPK/ERK signalling pathways. MEDCHEMCOMM 2016. [DOI: 10.1039/c5md00603a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorinated thiazolidinols cause A549 lung cancer cell death by acting via PI3K/Akt/mTOR and MEK/ERK pathways.
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Affiliation(s)
| | - Tulshiram L. Dadmal
- Fluoroorganic Division
- Indian Institute of Chemical Technology
- Hyderabad
- India
- Government of Maharashtra's
| | - Dinesh Kumar
- Centre for Chemical Biology
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - M. Janaki Ramaiah
- School of Chemical and Biotechnology
- Sastra University
- Thanjavur-613402
- India
| | - Anudeep Kota
- Centre for Chemical Biology
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Debabrata Chowdhury
- Centre for Chemical Biology
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - K. Appalanaidu
- Fluoroorganic Division
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Y. Khageswara Rao
- Fluoroorganic Division
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Sayyad Hyder
- Fluoroorganic Division
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - T. Anjana Devi
- Centre for Chemical Biology
- Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Manika Pal Bhadra
- Centre for Chemical Biology
- Indian Institute of Chemical Technology
- Hyderabad
- India
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Ma MY, Bai J, Chang WL, Tao KX. Effect of monoacylglycerol lipase inhibitor JZL184 on apoptosis of colorectal cancer cells. Shijie Huaren Xiaohua Zazhi 2015; 23:2256-2263. [DOI: 10.11569/wcjd.v23.i14.2256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate whether JZL184, a monoacylglycerol lipase inhibitor, induces apoptosis of colorectal cancer cells and to explore the possible mechanism.
METHODS: SW480 and Lovo cells were treated with JZL184, JZL184 + 5-fluorouracil (5-Fu) or 5-Fu alone for 48 h. Apoptosis was assessed by flow cytometry. The protein levels of p-AKT, p-mTOR, pro-Caspase3 and pro-Caspase8 were assessed by Western blot.
RESULTS: Treatment with JZL184 + 5-Fu increased SW480 and Lovo cell apoptosis more significantly than 5-Fu alone (apoptosis increase in SW480 cells: JZL184 + 500 μmol/L 5-Fu 13.91% ± 9.13%, JZL184 + 200 μmol/L 5-Fu 26.34% ± 13.32%, JZL184 + 100 μmol 5-Fu 43.32% ± 8.04%, JZL184 + 10 μmol 5-Fu 31.4% ± 5.82%; Lovo cells: JZL184 + 500 μmol/L 5-Fu 17.56% ± 8.14%, JZL184 + 200 μmol/L 5-Fu 33.04% ± 9.49%, JZL184 + 100 μmol/L 5-Fu 36.91% ± 16.63%, JZL184 + 10 μmol/L 5-Fu 21.26% ± 11.03%). Treatment with JZL184 significantly decreased the protein levels of p-AKT, p-mTOR, pro-Caspase3 and pro-Caspase8 in colorectal cancer SW480 and Lovo cells (P < 0.05).
CONCLUSION: JZL184 can inhibit the AKT-mTOR pathway and promote pro-Caspase8 and pro-Caspase3 activation to increase the apoptosis of SW480 and Lovo cells treated with 5-Fu.
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Zhang X, Dong W, Zhou H, Li H, Wang N, Miao X, Jia L. α-2,8-Sialyltransferase Is Involved in the Development of Multidrug Resistance via PI3K/Akt Pathway in Human Chronic Myeloid Leukemia. IUBMB Life 2015; 67:77-87. [PMID: 25855199 DOI: 10.1002/iub.1351] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Revised: 01/07/2015] [Accepted: 01/12/2015] [Indexed: 11/07/2022]
Abstract
Cell surface sialylation is emerging as an important feature of cancer cell multidrug resistance (MDR). We have focused on the influence of 2,8-sialyltransferases in key steps of the development of MDR in chronic myeloid leukemia (CML). The expressional profiles of six α-2,8-sialyltransferases were generated in three pairs of CML cell lines and peripheral blood mononuclear cells (PBMC) of CML patients. Cellular MDR phenotype positively correlated with ST8SIA4 and ST8SIA6 levels. Furthermore, ST8SIA4 mediated the activity of phosphoinositide-3 kinase (PI3K)/Akt signal pathway and the expression of P-glycoprotein (P-gp). Targeting the PI3K/Akt pathway by its specific inhibitor LY294002, or by Akt RNA interfering reversed the MDR phenotype of K562/ADR cells. Inhibition of PI3K/Akt pathway also attenuated the effects caused by the overexpression of ST8SIA4 on MDR. Therefore this study indicated that α-2,8-sialyltransferases involved in the development of MDR of CML cells probably through ST8SIA4 regulating the activity of PI3K/Akt signaling and the expression of P-gp.
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Affiliation(s)
- Xu Zhang
- Department of Medical Laboratory, College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
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Zinzi L, Contino M, Cantore M, Capparelli E, Leopoldo M, Colabufo NA. ABC transporters in CSCs membranes as a novel target for treating tumor relapse. Front Pharmacol 2014; 5:163. [PMID: 25071581 PMCID: PMC4091306 DOI: 10.3389/fphar.2014.00163] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 06/20/2014] [Indexed: 12/12/2022] Open
Abstract
CSCs are responsible for the high rate of recurrence and chemoresistance of different types of cancer. The current antineoplastic agents able to inhibit bulk replicating cancer cells and radiation treatment are not efficacious toward CSCs since this subpopulation has several intrinsic mechanisms of resistance. Among these mechanisms, the expression of ATP-Binding Cassette (ABC) transporters family and the activation of different signaling pathways (such as Wnt/β-catenin signaling, Hedgehog, Notch, Akt/PKB) are reported. Therefore, considering ABC transporters expression on CSCs membranes, compounds able to modulate MDR could induce cytotoxicity in these cells disclosing an exciting and alternative strategy for targeting CSCs in tumor therapy. The next challenge in the cure of cancer relapse may be a multimodal strategy, an approach where specific CSCs targeting drugs exert simultaneously the ability to circumvent tumor drug resistance (ABC transporters modulation) and cytotoxic activity toward CSCs and the corresponding differentiated tumor cells. The efficacy of suggested multimodal strategy could be probed by using several scaffolds active toward MDR pumps on CSCs isolated by tumor specimens.
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Affiliation(s)
- Laura Zinzi
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "A. Moro," Bari, Italy
| | - Marialessandra Contino
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "A. Moro," Bari, Italy
| | - Mariangela Cantore
- Dipartimento di Farmacia-Scienze del Farmaco, Biofordrug srl, Spin-off of University of Bari Bari, Italy
| | - Elena Capparelli
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "A. Moro," Bari, Italy
| | - Marcello Leopoldo
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "A. Moro," Bari, Italy ; Dipartimento di Farmacia-Scienze del Farmaco, Biofordrug srl, Spin-off of University of Bari Bari, Italy
| | - Nicola A Colabufo
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "A. Moro," Bari, Italy ; Dipartimento di Farmacia-Scienze del Farmaco, Biofordrug srl, Spin-off of University of Bari Bari, Italy
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Ma H, Zhou H, Li P, Song X, Miao X, Li Y, Jia L. Effect of ST3GAL 4 and FUT 7 on sialyl Lewis X synthesis and multidrug resistance in human acute myeloid leukemia. Biochim Biophys Acta Mol Basis Dis 2014; 1842:1681-92. [PMID: 24953795 DOI: 10.1016/j.bbadis.2014.06.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 06/07/2014] [Accepted: 06/12/2014] [Indexed: 01/12/2023]
Abstract
Sialyl Lewis X (sLe X, CD15s) is a key antigen produced on tumor cell surfaces during multidrug resistance (MDR) development. The present study investigated the effect of α1, 3 fucosyltransferase VII (FucT VII) and α2, 3 sialyltransferase IV (ST3Gal IV) on sLe X oligosaccharides synthesis as well as their impact on MDR development in acute myeloid leukemia cells (AML). FUT7 and ST3GAL4 were overexpressed in three AML MDR cells and bone marrow mononuclear cells (BMMC) of AML patients with MDR by real-time polymerase chain reaction (PCR). A close association was found between the expression levels of FUT7 and ST3GAL4 and the amount of sLe X oligosaccharides, as well as the phenotypic variation of MDR of HL60 and HL60/ADR cells both in vitro and in vivo. Manipulation of these two genes' expression modulated the activity of phosphoinositide-3 kinase (PI3K)/Akt signaling pathway, thereby regulating the proportionally mutative expression of P-glycoprotein (P-gp) and multidrug resistance related protein 1 (MRP1), both of which are known to be involved in MDR. Blocking the PI3K/Akt pathway by its specific inhibitor LY294002 or Akt short hairpin RNA (shRNA) resulted in the reduced MDR of HL60/ADR cells. This study indicated that sLe X involved in the development of MDR of AML cells probably through FUT7 and ST3GAL4 regulating the activity of PI3K/Akt signaling pathway and the expression of P-gp and MRP1.
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Affiliation(s)
- Hongye Ma
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Huimin Zhou
- Department of Microbiology, Dalian Medical University, Dalian, Liaoning Province, China
| | - Peng Li
- Department of Bone Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Xiaobo Song
- Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway
| | - Xiaoyan Miao
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Yanping Li
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China
| | - Li Jia
- College of Laboratory Medicine, Dalian Medical University, Dalian, Liaoning Province, China.
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50
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Gatouillat G, Magid AA, Bertin E, Okiemy-Akeli MG, Morjani H, Lavaud C, Madoulet C. Cytotoxicity and apoptosis induced by alfalfa (Medicago sativa) leaf extracts in sensitive and multidrug-resistant tumor cells. Nutr Cancer 2014; 66:483-91. [PMID: 24628411 DOI: 10.1080/01635581.2014.884228] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Alfalfa (Medicago sativa) has been used to cure a wide variety of ailments. However, only a few studies have reported its anticancer effects. In this study, extracts were obtained from alfalfa leaves and their cytotoxic effects were assessed on several sensitive and multidrug-resistant tumor cells lines. Using the mouse leukaemia P388 cell line and its doxorubicin-resistant counterpart (P388/DOX), we showed that the inhibition of cell growth induced by alfalfa leaf extracts was mediated through the induction of apoptosis, as evidenced by DNA fragmentation analysis. The execution of programmed cell death was achieved via the activation of caspase-3, leading to PARP cleavage. Fractionation of toluene extract (To-1), the most active extract obtained from crude extract, led to the identification of 3 terpene derivatives and 5 flavonoids. Among them, (-)-medicarpin, (-)-melilotocarpan E, millepurpan, tricin, and chrysoeriol showed cytotoxic effects in P388 as well as P388/DOX cells. These results demonstrate that alfalfa leaf extract may have interesting potential in cancer chemoprevention and therapy.
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Affiliation(s)
- Grégory Gatouillat
- a Laboratoire de Biochimie et Biologie Moléculaire , Faculté de Pharmacie, URCA , Reims , France
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