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Jia W, Yang M, Zhang W, Xu W, Zhang Y. Carrier-Free Self-Assembled Nanomedicines for Promoting Apoptosis and Inhibiting Proliferation in Hepatocellular Carcinoma. ACS Biomater Sci Eng 2024. [PMID: 38841860 DOI: 10.1021/acsbiomaterials.4c00390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
In order to improve the effectiveness of tumor treatment and reduce the toxic side effects of drugs, we formed carrier-free multifunctional nanoparticles (BI NPs) by noncovalent interaction of berberine hydrochloride and IR780. BI NPs possessed the synergistic effects of promoting apoptosis, inhibiting proliferation and metastasis of tumors, and phototherapeutic treatment. Dispersive and passive targeting ability retention (EPR) effects of BI NPs on tumor sites in vivo could be monitored by fluorescence imaging. In addition, BI NPs exhibited effective reactive oxygen species (ROS) generation and photothermal conversion capabilities, photodynamic therapy (PDT), and photothermal therapy (PTT). Importantly, BI NPs inhibit tumor suppression through the AMPK/PI3K/AKT signaling pathway to inhibit tumor proliferation and metastasis. BI NPs not only have efficient in vivo multimodal therapeutic effects but also have good biosafety and potential clinical applications.
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Affiliation(s)
- WeiLu Jia
- Medical School, Southeast University, Nanjing 210009, China
| | - Meng Yang
- Department of Ultrasound, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100730, China
| | - WenNing Zhang
- Hepatopancreatobiliary Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210009, China
| | - WenJing Xu
- Medical School, Southeast University, Nanjing 210009, China
| | - YeWei Zhang
- Hepatopancreatobiliary Center, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210009, China
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Effects of Berberine on Liver Cancer. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221102032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Liver cancer, otherwise known as hepatocellular carcinoma, is a chronic disease condition with an excessive deposition and growth of malignant cells in the body. The high incidence and prevalence rates of liver cancer continue to be problems, as well as its poor prognosis and therapeutic limitations involving severe drug adverse reactions linked to the use of synthetic chemotherapeutic compounds. Continuous experimental studies, as well as utilization of pure herbal-based compounds, are essential towards finding more potent cures for liver cancer. Natural bioactive compounds, particularly alkaloids (eg, berberine), have been shown to be highly beneficial in the treatment of various diseases. Berberine (BBR), an isoquinoline alkaloid, is obtained from stem, bark, roots, rhizomes, and leaves of several medicinal plants, including Berberis species. It is commonly synthesized from the benzyltetrahydroisoquinoline system with the incorporation of an additional carbon atom as a bridge. The multiple attributes of BBR involving effective inhibitory and cytotoxic actions against the proliferation of cancer cells have been demonstrated. The use of BBR in experimental studies (in vivo and in vitro) for over a decade for liver cancer treatment has proven to be highly effective, safe, and potent. Until now, the poor solubility of BBR remains one of the contributing factors leading to its minimal clinical bioavailability. Therefore, BBR could serve as a prospective drug candidate in the future towards drug formulation for liver cancer treatment. The relevant information regarding this review was obtained electronically through the use of databases such as PubMed, Google Scholar, Springer, Hindawi, Embase, Web of Science, and China National Knowledge Infrastructure. All the aforementioned databases were searched from 1981 to 2020. This literature represents an update of previous review papers discussing the various positive pharmacological and mechanistic effects (oxidative stress regulation, inflammation reduction, apoptosis activation, overcoming drug resistance, and metastasis inhibition) of BBR for liver cancer treatment, which would be of great significance to drug development and clinical research.
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He L, Zhong Z, Chen M, Liang Q, Wang Y, Tan W. Current Advances in Coptidis Rhizoma for Gastrointestinal and Other Cancers. Front Pharmacol 2022; 12:775084. [PMID: 35046810 PMCID: PMC8762280 DOI: 10.3389/fphar.2021.775084] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/08/2021] [Indexed: 12/24/2022] Open
Abstract
Cancer is a serious disease with an increasing number of reported cases and high mortality worldwide. Gastrointestinal cancer defines a group of cancers in the digestive system, e.g., liver cancer, colorectal cancer, and gastric cancer. Coptidis Rhizoma (C. Rhizoma; Huanglian, in Chinese) is a classical Chinese medicinal botanical drug for the treatment of gastrointestinal disorders and has been shown to have a wide variety of pharmacological activity, including antifungal, antivirus, anticancer, antidiabetic, hypoglycemic, and cardioprotective effects. Recent studies on C. Rhizoma present significant progress on its anticancer effects and the corresponding mechanisms as well as its clinical applications. Herein, keywords related to C. Rhizoma, cancer, gastrointestinal cancer, and omics were searched in PubMed and the Web of Science databases, and more than three hundred recent publications were reviewed and discussed. C. Rhizoma extract along with its main components, berberine, palmatine, coptisine, magnoflorine, jatrorrhizine, epiberberine, oxyepiberberine, oxyberberine, dihydroberberine, columbamine, limonin, and derivatives, are reviewed. We describe novel and classic anticancer mechanisms from various perspectives of pharmacology, pharmaceutical chemistry, and pharmaceutics. Researchers have transformed the chemical structures and drug delivery systems of these components to obtain better efficacy and bioavailability of C. Rhizoma. Furthermore, C. Rhizoma in combination with other drugs and their clinical application are also summarized. Taken together, C. Rhizoma has broad prospects as a potential adjuvant candidate against cancers, making it reasonable to conduct additional preclinical studies and clinical trials in gastrointestinal cancer in the future.
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Affiliation(s)
- Luying He
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Zhangfeng Zhong
- Macau Centre for Research and Development in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
- *Correspondence: Zhangfeng Zhong, ; Yitao Wang, ; Wen Tan,
| | - Man Chen
- Oncology Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Qilian Liang
- Oncology Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yitao Wang
- Macau Centre for Research and Development in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
- *Correspondence: Zhangfeng Zhong, ; Yitao Wang, ; Wen Tan,
| | - Wen Tan
- School of Pharmacy, Lanzhou University, Lanzhou, China
- *Correspondence: Zhangfeng Zhong, ; Yitao Wang, ; Wen Tan,
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Jia XB, Zhang Q, Xu L, Yao WJ, Wei L. Lotus leaf flavonoids induce apoptosis of human lung cancer A549 cells through the ROS/p38 MAPK pathway. Biol Res 2021; 54:7. [PMID: 33653412 PMCID: PMC7923640 DOI: 10.1186/s40659-021-00330-w] [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: 07/13/2020] [Accepted: 02/20/2021] [Indexed: 12/02/2022] Open
Abstract
Background
Leaves of the natural plant lotus are used in traditional Chinese medicine and tea production. They are rich in flavonoids. Methods In this study, lotus leaf flavonoids (LLF) were applied to human lung cancer A549 cells and human small cell lung cancer cells H446 in vitro to verify the effect of LLF on apoptosis in these cells through the ROS/p38 MAPK pathway. Results LLF had no toxic effect on normal cells at concentrations up to 500 µg/mL, but could significantly inhibit the proliferation of A549 cells and H446 cells. Flow cytometry showed that LLF could induce growth in A549 cells. We also found that LLF could increase ROS and MDA levels, and decrease SOD activity in A549 cells. Furthermore, qRT-PCR and western blot analyses showed that LLF could upregulate the expression of p38 MAPK (p-p38 MAPK), caspase-3, caspase-9, cleaved caspase-3, cleaved caspase-9 and Bax and downregulate the expression of Cu/Zn SOD, CAT, Nrf2, NQO1, HO-1, and Bcl-2 in A549 cells. Results of HPLC showed that LLF mainly contain five active substances: kaempferitrin, hyperoside, astragalin, phloridzin, and quercetin. The apoptosis-inducing effect of LLF on A549 cells came from these naturally active compounds. Conclusions We have shown in this study that LLF is a bioactive substance that can induce apoptosis in A549 cells in vitro, and merits further research and development.
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Affiliation(s)
- Xiang-Bo Jia
- Department of Thoracic Surgery, Zhengzhou Key Laboratory of Surgical Treatment for End-Stage Lung Diseases, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, Henan, China
| | - Quan Zhang
- Department of Thoracic Surgery, Zhengzhou Key Laboratory of Surgical Treatment for End-Stage Lung Diseases, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, Henan, China
| | - Lei Xu
- Department of Thoracic Surgery, Zhengzhou Key Laboratory of Surgical Treatment for End-Stage Lung Diseases, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, Henan, China
| | - Wen-Jian Yao
- Department of Thoracic Surgery, Zhengzhou Key Laboratory of Surgical Treatment for End-Stage Lung Diseases, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, Henan, China
| | - Li Wei
- Department of Thoracic Surgery, Zhengzhou Key Laboratory of Surgical Treatment for End-Stage Lung Diseases, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, Henan, China.
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Synergistic anticancer effects of nanocarrier loaded with berberine and miR-122. Biosci Rep 2018; 38:BSR20180311. [PMID: 29769413 PMCID: PMC6019385 DOI: 10.1042/bsr20180311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/11/2018] [Accepted: 05/11/2018] [Indexed: 12/19/2022] Open
Abstract
We introduced polyethyleneimine (PEI)-cholesterol (PC) as a nanocarrier incorporating berberine (BER) and miR-122 for the treatment of oral squamous cell carcinoma (OSCC). BER was stabilized by incorporating PC to form ber-PC. Ber-PC was further electrostatically complexed with miR-122 to yield mr-ber-PC for the co-delivery of BER and miR-122. mr-ber-PC treatment dramatically decreased the level of invasion and migration of OSCC cells compared with single drug treatments. The present study suggested that PC could be a multifunctional nanocarrier for the co-delivery of anticancer drug BER and miR-122 to significantly increase the anticancer therapeutic effects.
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Ma YK, Chen YB, Li P. Quercetin inhibits NTHi-triggered CXCR4 activation through suppressing IKKα/NF-κB and MAPK signaling pathways in otitis media. Int J Mol Med 2018; 42:248-258. [PMID: 29568908 PMCID: PMC5979834 DOI: 10.3892/ijmm.2018.3577] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 02/21/2018] [Indexed: 12/16/2022] Open
Abstract
Otitis media is one of the most common bacterial infections in children, contributing to hearing loss. A vital bacterial pathogen leading to otitis media development is the nontypeable Haemophilus influenzae (NTHi). Inflammation response is reported as an important characristic for otitis media. Chemokine CXC receptor 4 (CXCR4) is a 352-amino acid seven-span transmembrane G-protein coupled receptor, essential for inflammatory response. However, the possible molecular mechanism indicating the alteration of CXCR4 modulated by NTHi is poorly known. In the present study, NTHi enhanced CXCR4 expression through phosphorylation of IKKα and p38, which relied on nuclear factor-κB (NF-κB) translocation in vitro as well as in the middle ear of mice in vivo. Previously, quercetin, a natural production mainly isolated from rutin, has shown anti-inflammatory effects. Here, we report that quercetin suppressed NTHi-induced CXCR4 expression levels in vitro and in vivo. Quercetin blocked CXCR4 activation through direct IKKβ phosphorylation inhibition, as well as of p38 MAPK restraining. Hence, identification of quercetin may be a potential therapeutic strategy for treating otitis media induced by NTHi through inflammation suppression.
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Affiliation(s)
- Yu-Kun Ma
- Department of Otorhinolaryngology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510630 P.R. China
| | - Yu-Bin Chen
- Department of Otolaryngology Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510630 P.R. China
| | - Peng Li
- Department of Otolaryngology Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510630 P.R. China
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Velatooru LR, Baggu CB, Janapala VR. Spatane diterpinoid from the brown algae, Stoechospermum marginatum induces apoptosis via ROS induced mitochondrial mediated caspase dependent pathway in murine B16F10 melanoma cells. Mol Carcinog 2016; 55:2222-2235. [PMID: 26785383 DOI: 10.1002/mc.22463] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 12/15/2015] [Accepted: 01/06/2016] [Indexed: 12/16/2023]
Abstract
Spatane diterpinoids isolated from the brown marine algae Stoechospermum marginatum were known to have cytotoxic effects in human cancerous cell lines and murine melanoma cells; the underling apoptotic mechanism of diterpinoids still remains unclear so far. Thus, in the present study, the apoptotic mechanism of a spatane diterpinoid, 5(R), 19-diacetoxy-15,18(R and S), dihydro spata-13, 16(E)-diene (DDSD) was investigated mainly in B16F10 melanoma cells because they were most susceptible to DDSD than THP1, U937, COLO205, and HL60 cells. The treatment of B6F10 cells with DDSD resulted in morphological alterations, nuclear condensation, and DNA fragmentation, which leads to cell growth inhibition in a concentration-dependent manner. Data indicate that DDSD induced the generation of ROS, consequentially caused alteration in Bax/Bcl-2 ratio that disrupted the inner mitochondrial transmembrane potential (ΔΨm) resulting in cytochrome c redistribution to the cytoplasm and activation of caspase-mediated apoptotic pathway. Flow cytometric analysis clearly indicated that the DDSD inducing phosphatidylserine externalization and mediated "S-phase" arrest in cell cycle. In addition, results also found that DDSD induced apoptosis through deregulating PI3K/AKT signaling pathway. The anti-tumor activity of DDSD was evaluated in C57BL/6 mice bearing B16F10 melanoma. It effectively inhibited tumor growth (volume and weight) in a dose dependent manner, yet without apparent toxic effects. Morphology and apoptotic status of tumor tissues in the treated mice were assessed by microscopy and TUNEL assay, respectively. Our study shows a therapeutic potential of DDSD for the treatment of malignant melanoma and a new source of anticancer drugs. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Loka Reddy Velatooru
- Division of Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
| | - Chinna Babu Baggu
- Division of Natural Product, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
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Chen M, Qu X, Zhang Z, Wu H, Qin X, Li F, Liu Z, Tian L, Miao J, Shu W. Cross-talk between Arg methylation and Ser phosphorylation modulates apoptosis signal-regulating kinase 1 activation in endothelial cells. Mol Biol Cell 2016; 27:1358-66. [PMID: 26912789 PMCID: PMC4831888 DOI: 10.1091/mbc.e15-10-0738] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 02/09/2016] [Indexed: 12/15/2022] Open
Abstract
Protein arginine methyltransferase 5 interacts with and methylates apoptosis signal–regulating kinase 1 at arginine residue 89, thereby negatively regulating its activity by promoting the interaction between ASK1 and Akt and thus phosphorylating ASK1 at serine residue 83. We describe a novel functional interaction between ASK1 and PRMT5. We show that PRMT5 interacts with and methylates ASK1 at arginine residue 89 and thereby negatively regulates its activity by promoting the interaction between ASK1 and Akt and thus phosphorylating ASK1 at serine residue 83. Furthermore, the association between ASK1 and Akt is enhanced by VEGF stimulation, and PRMT5 is required for this association. Moreover, PRMT5-mediated ASK1 methylation impaired the H2O2-induced activity of ASK1, and this inhibitory effect of PRMT5 was abolished by replacement of arginine 89 with Trp or depletion of PRMT5 expression by RNA interference. Together the results demonstrate cross-talk between arginine methylation and serine phosphorylation in ASK1.
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Affiliation(s)
- Ming Chen
- Center for Identification of Chinese Herbal Medicines, Guangxi Botanical Garden of Medicinal Plants, Nanning 530023, China Tianjin Institute of Hygiene and Environmental Medicine, Tianjin 300050, China
| | - Xiaosheng Qu
- Center for Identification of Chinese Herbal Medicines, Guangxi Botanical Garden of Medicinal Plants, Nanning 530023, China
| | - Zhiqing Zhang
- Tianjin Institute of Hygiene and Environmental Medicine, Tianjin 300050, China
| | - Huayu Wu
- Department of Cell Biology and Genetics, Guangxi Medical University, Nanning 530021, China
| | - Xia Qin
- Department of Cell Biology and Genetics, Guangxi Medical University, Nanning 530021, China
| | - Fuji Li
- Department of Cell Biology and Genetics, Guangxi Medical University, Nanning 530021, China
| | - Zhenfang Liu
- Department of Hematology, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Liyuan Tian
- Department of Specific Diagnosis, General Hospital of Airforce, Beijing 100142, China
| | - Jianhua Miao
- Center for Identification of Chinese Herbal Medicines, Guangxi Botanical Garden of Medicinal Plants, Nanning 530023, China
| | - Wei Shu
- Department of Cell Biology and Genetics, Guangxi Medical University, Nanning 530021, China
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Stechschulte LA, Hinds TD, Ghanem SS, Shou W, Najjar SM, Sanchez ER. FKBP51 reciprocally regulates GRα and PPARγ activation via the Akt-p38 pathway. Mol Endocrinol 2014; 28:1254-64. [PMID: 24933248 DOI: 10.1210/me.2014-1023] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
FK506-binding protein 51 (FKBP51) is a negative regulator of glucocorticoid receptor-α (GRα), although the mechanism is unknown. We show here that FKBP51 is also a chaperone to peroxisome proliferator-activated receptor-γ (PPARγ), which is essential for activity, and uncover the mechanism underlying this differential regulation. In COS-7 cells, FKBP51 overexpression reduced GRα activity at a glucocorticoid response element-luciferase reporter, while increasing PPARγ activity at a peroxisome proliferator response element reporter. Conversely, FKBP51-deficient (knockout) (51KO) mouse embryonic fibroblasts (MEFs) showed elevated GRα but reduced PPARγ activities compared with those in wild-type MEFs. Phosphorylation is known to exert a similar pattern of reciprocal modulation of GRα and PPARγ. Knockdown of FKBP51 in 3T3-L1 preadipocytes increased phosphorylation of PPARγ at serine 112, a phospho-residue that inhibits activity. In 51KO cells, elevated phosphorylation of GRα at serines 220 and 234, phospho-residues that promote activity, was observed. Because FKBP51 is an essential chaperone to the Akt-specific phosphatase PH domain leucine-rich repeat protein phosphatase, Akt signaling was investigated. Elevated Akt activation and increased activation of p38 kinase, a downstream target of Akt that phosphorylates GRα and PPARγ, were seen in 51KO MEFs, causing activation and inhibition, respectively. Inactivation of p38 with PD169316 reversed the effects of FKBP51 deficiency on GRα and PPARγ activities and reduced PPARγ phosphorylation. Last, loss of FKBP51 caused a shift of PPARγ from cytoplasm to nucleus, as previously shown for GRα. A model is proposed in which FKBP51 loss reciprocally regulates GRα and PPARγ via 2 complementary mechanisms: activation of Akt-p38-mediated phosphorylation and redistribution of the receptors to the nucleus for direct targeting by p38.
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Affiliation(s)
- Lance A Stechschulte
- Center for Diabetes and Endocrine Research (L.A.S., T.D.H., S.S.G., S.M.N., E.R.S.), Department of Physiology and Pharmacology, University of Toledo College of Medicine, Toledo, Ohio 43614; and Herman B. Wells Center for Pediatric Research (W.S.), Section of Pediatric Cardiology, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202
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Al-Suhaimi E. Molecular mechanisms of leptin and pro-apoptotic signals induced by menadione in HepG2 cells. Saudi J Biol Sci 2014; 21:582-8. [PMID: 25473367 DOI: 10.1016/j.sjbs.2014.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 03/19/2014] [Accepted: 03/20/2014] [Indexed: 12/18/2022] Open
Abstract
Apoptosis is a significant physiological function in the cell. P(53) is known as tumor suppressor cellular factor, executive caspases are also the most involved pathway for apoptosis. Menadione (VK3) has apoptotic action on many harmful cells, but the molecular role of adipokines is not studied enough in this regard, so the ability of menadione to modify the adipokine (leptin hormone), caspase-3 and P(53) signals to induce its apoptotic action on HepG2 cells was studied. The study revealed that menadione has anti-viability and apoptotic effect at sub-G1 phase of HepG2 cell cycle. Its cytotoxic effect is mediated by molecular mechanisms included: inhibiting leptin expression and level, activating caspase-3 pathway and up-regulating the expression of P(53). Menadione exerts its apoptotic mechanisms in a concentration and time dependent way through ROS generation. In addition to the known apoptotic pathways, the results indicate that suppressing leptin pathway is a significant mechanism for menadione apoptotic effect which made it as a potential therapeutic vitamin in preventing hepatocyte survival and proliferation.
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Affiliation(s)
- Ebtesam Al-Suhaimi
- Biology Department, College of Sciences, University of Dammam, Dammam, Saudi Arabia
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Diosgenin Induces Apoptosis in HepG2 Cells through Generation of Reactive Oxygen Species and Mitochondrial Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:981675. [PMID: 22719792 PMCID: PMC3375183 DOI: 10.1155/2012/981675] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 04/20/2012] [Accepted: 04/27/2012] [Indexed: 01/14/2023]
Abstract
Diosgenin, a naturally occurring steroid saponin found abundantly in legumes and yams, is a precursor of various synthetic steroidal drugs. Diosgenin is studied for the mechanism of its action in apoptotic pathway in human hepatocellular carcinoma cells. Based on DAPI staining, diosgenin-treated cells manifested nuclear shrinkage, condensation, and fragmentation. Treatment of HepG2 cells with 40 μM diosgenin resulted in activation of the caspase-3, -8, -9 and cleavage of poly-ADP-ribose polymerase (PARP) and the release of cytochrome c. In the upstream, diosgenin increased the expression of Bax, decreased the expression of Bid and Bcl-2, and augmented the Bax/Bcl-2 ratio. Diosgenin-induced, dose-dependent induction of apoptosis was accompanied by sustained phosphorylation of JNK, p38 MAPK and apoptosis signal-regulating kinase (ASK)-1, as well as generation of the ROS. NAC administration, a scavenger of ROS, reversed diosgene-induced cell death. These results suggest that diosgenin-induced apoptosis in HepG2 cells through Bcl-2 protein family-mediated mitochndria/caspase-3-dependent pathway. Also, diosgenin strongly generated ROS and this oxidative stress might induce apoptosis through activation of ASK1, which are critical upstream signals for JNK/p38 MAPK activation in HepG2 cancer cells.
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Wang L, Liu L, Shi Y, Cao H, Chaturvedi R, Calcutt MW, Hu T, Ren X, Wilson KT, Polk DB, Yan F. Berberine induces caspase-independent cell death in colon tumor cells through activation of apoptosis-inducing factor. PLoS One 2012; 7:e36418. [PMID: 22574158 PMCID: PMC3344856 DOI: 10.1371/journal.pone.0036418] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 03/31/2012] [Indexed: 11/25/2022] Open
Abstract
Berberine, an isoquinoline alkaloid derived from plants, is a traditional medicine for treating bacterial diarrhea and intestinal parasite infections. Although berberine has recently been shown to suppress growth of several tumor cell lines, information regarding the effect of berberine on colon tumor growth is limited. Here, we investigated the mechanisms underlying the effects of berberine on regulating the fate of colon tumor cells, specifically the mouse immorto-Min colonic epithelial (IMCE) cells carrying the Apcmin mutation, and of normal colon epithelial cells, namely young adult mouse colonic epithelium (YAMC) cells. Berberine decreased colon tumor colony formation in agar, and induced cell death and LDH release in a time- and concentration-dependent manner in IMCE cells. In contrast, YAMC cells were not sensitive to berberine-induced cell death. Berberine did not stimulate caspase activation, and PARP cleavage and berberine-induced cell death were not affected by a caspase inhibitor in IMCE cells. Rather, berberine stimulated a caspase-independent cell death mediator, apoptosis-inducing factor (AIF) release from mitochondria and nuclear translocation in a ROS production-dependent manner. Amelioration of berberine-stimulated ROS production or suppression of AIF expression blocked berberine-induced cell death and LDH release in IMCE cells. Furthermore, two targets of ROS production in cells, cathepsin B release from lysosomes and PARP activation were induced by berberine. Blockage of either of these pathways decreased berberine-induced AIF activation and cell death in IMCE cells. Thus, berberine-stimulated ROS production leads to cathepsin B release and PARP activation-dependent AIF activation, resulting in caspase-independent cell death in colon tumor cells. Notably, normal colon epithelial cells are less susceptible to berberine-induced cell death, which suggests the specific inhibitory effects of berberine on colon tumor cell growth.
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Affiliation(s)
- Lihong Wang
- Department of Pediatrics, Vanderbilt University Medical Center and the Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tennessee, United States of America
- Cancer Research Center, Xiamen University Medical College, Xiamen, P. R. China
| | - Liping Liu
- Department of Pediatrics, Vanderbilt University Medical Center and the Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tennessee, United States of America
| | - Yan Shi
- Department of Pediatrics, Vanderbilt University Medical Center and the Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tennessee, United States of America
| | - Hanwei Cao
- Department of Pediatrics, Vanderbilt University Medical Center and the Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tennessee, United States of America
| | - Rupesh Chaturvedi
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - M. Wade Calcutt
- Department of Biochemistry, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Tianhui Hu
- Cancer Research Center, Xiamen University Medical College, Xiamen, P. R. China
| | - Xiubao Ren
- Department of Biotherapy, Cancer Institute & Hospital, Tianjin Medical University, Tianjin, P. R. China
| | - Keith T. Wilson
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee, United States of America
| | - D. Brent Polk
- Department of Pediatrics, University of Southern California and Children’s Hospital Los Angeles, Los Angeles, California, United States of America
| | - Fang Yan
- Department of Pediatrics, Vanderbilt University Medical Center and the Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tennessee, United States of America
- Department of Biotherapy, Cancer Institute & Hospital, Tianjin Medical University, Tianjin, P. R. China
- * E-mail:
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