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Nazir LA, Shahid NH, Amit K, Umar SA, Rajni S, Bharate S, Sangwan PL, Tasduq SA. Synthesis and anti-melanoma effect of 3-O-prenyl glycyrrhetinic acid against B16F10 cells via induction of endoplasmic reticulum stress-mediated autophagy through ERK/AKT signaling pathway. Front Oncol 2022; 12:890299. [PMID: 35982963 PMCID: PMC9380594 DOI: 10.3389/fonc.2022.890299] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 07/01/2022] [Indexed: 11/13/2022] Open
Abstract
Melanoma is an aggressive form of cancer with poor prognosis and survival rates and limited therapeutic options. Here, we report the anti-melanoma effect of 3-O-prenyl glycyrrhetinic acid (NPC-402), a derivative of glycyrrhtinic acid, from a reputed medicinal plant Glycyrrhiza glabra against B16F10 cells. We studied the cytotoxic effect of NPC-402 on melanoma cells and investigated the role of mitogen-activated protein (MAP) kinase, AKT axis, and endoplasmic reticulum (ER) stress/unfolded protein response (UPR)-mediated autophagy as the involved signaling cascade by studying specific marker proteins. In this study, 4-phenylbutyric acid (4PBA, a chemical chaperone) and small interference RNA (siRNA) knockdown of C/EBP Homologous Protein (CHOP)/growth arrest- and DNA damage-inducible gene 153(GAD153) blocked NPC-402-mediated autophagy induction, thus confirming the role of ER stress and autophagy in melanoma cell death. NPC-402 induced oxidative stress and apoptosis in melanoma cells, which were effectively mitigated by treatment with N-acetylcysteine (NAC). In vivo studies showed that intraperitoneal (i.p.) injection of NPC-402 at 10 mg/kg (5 days in 1 week) significantly retarded angiogenesis in the Matrigel plug assay and reduced the tumor size and tumor weight without causing any significant toxic manifestation in C57BL/6J mice. We conclude that NPC-402 has a high potential to be developed as a chemotherapeutic drug against melanoma.
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Affiliation(s)
- Lone A. Nazir
- Pharmacokinetics-Pharmacodynamics and Toxicology Division, Council Of scientific and Industrial Research-Indian Institute of Integrative Medicine, Jammu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Naikoo H. Shahid
- Pharmacokinetics-Pharmacodynamics and Toxicology Division, Council Of scientific and Industrial Research-Indian Institute of Integrative Medicine, Jammu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Kumar Amit
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Sheikh A. Umar
- Pharmacokinetics-Pharmacodynamics and Toxicology Division, Council Of scientific and Industrial Research-Indian Institute of Integrative Medicine, Jammu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Sharma Rajni
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Sandip Bharate
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Pyare L. Sangwan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- Natural Product and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu Tawi, India
| | - Sheikh Abdullah Tasduq
- Pharmacokinetics-Pharmacodynamics and Toxicology Division, Council Of scientific and Industrial Research-Indian Institute of Integrative Medicine, Jammu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- *Correspondence: Sheikh Abdullah Tasduq, /
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Fang Y, Duan C, Chen S, Liu Z, Jiang B, Ai W, Wang L, Xie P, Fang H. Tanshinone‑IIA inhibits myocardial infarct via decreasing of the mitochondrial apoptotic signaling pathway in myocardiocytes. Int J Mol Med 2021; 48:158. [PMID: 34212981 PMCID: PMC8262657 DOI: 10.3892/ijmm.2021.4991] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 05/14/2021] [Indexed: 11/06/2022] Open
Abstract
Myocardial ischemia triggers an inflammatory reaction and oxidative stress that increases apoptosis of myocardiocytes. It has been evidenced that tanshinone‑IIA (Tan‑IIA) protects against heart failure post‑myocardial infarction via inhibition of the apoptotic pathway. The purpose of the present study was to investigate the therapeutic effect of Tan‑IIA in a rat model of myocardial ischemia, and explore the possible mechanism of Tan‑IIA in myocardiocytes. The rat model of myocardial ischemia was established by left anterior descending coronary artery and rats received treatment with either Tan‑IIA (10 mg/kg) or PBS for 20 days continuously. The cardiac function in the experimental rat model was detected using the Sequoia 512 echocardiography system on day 21. The cell viability of myocardiocytes was assessed by CCK‑8 assay. Apoptosis of myocardiocytes and myocardial tissue was evaluated by TUNEL assay. The infarct size of the myocardial ischemia rat was determined through 2,3,5‑triphenyltetrazolium chloride (TTC) and Evan blue double staining assay. The expression levels of apoptotic factors were assessed by immunohistochemistry, western blotting and immunofluorescence. The results demonstrated that Tan‑IIA reduced myocardial infarct size and improved the myocardial function in myocardial ischemia rats. Compared with PBS, Tan‑IIA treatment decreased myocardial tissue apoptosis and the expression levels of caspase‑3, Cyto c and Apaf‑1 in myocardial tissue. Tan‑IIA increased the viability of impaired myocardiocytes, inhibited apoptosis of impaired myocardiocytes and increased Bcl‑2 and Bak expression in myocardiocytes. In addition, Tan‑IIA increased Bim and CHOP, decreased TBARS, ROS and H2O2 production, decreased ATF4 and IRE1α expression, and reduced intracellular calcium and oxidative stress in myocardiocytes. Furthermore, caspase‑3 overexpression blocked Tan‑IIA‑decreased apoptosis of myocardiocytes. In conclusion, the data in the present study indicated that Tan‑IIA improved myocardial infarct and apoptosis via the endoplasmic reticulum stress‑dependent pathway and mitochondrial apoptotic signaling pathway.
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Affiliation(s)
- Yeqing Fang
- Department of Cardiology, Shenzhen Nanshan People's Hospital, Shenzhen, Guangdong 518000, P.R. China
- Shenzhen Nanshan Medical Group Headquarters, Shenzhen, Guangdong 518052, P.R. China
| | - Chengcheng Duan
- Department of Cardiology, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, Guangdong 518000, P.R. China
| | - Shaoyuan Chen
- Department of Cardiology, Shenzhen Nanshan People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Zhenguo Liu
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 51027, USA
| | - Bimei Jiang
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 51027, USA
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Wen Ai
- Department of Cardiology, Shenzhen Nanshan People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Lei Wang
- Department of Cardiology, Shenzhen Nanshan People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Peiyi Xie
- Department of Cardiology, Shenzhen Nanshan People's Hospital, Shenzhen, Guangdong 518000, P.R. China
| | - Hongcheng Fang
- Department of Cardiology, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, Guangdong 518000, P.R. China
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Rahmati M, Ebrahim S, Hashemi S, Motamedi M, Moosavi MA. New insights on the role of autophagy in the pathogenesis and treatment of melanoma. Mol Biol Rep 2020; 47:9021-32. [DOI: 10.1007/s11033-020-05886-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 09/30/2020] [Indexed: 02/07/2023]
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Rather RA, Bhagat M, Singh SK. Oncogenic BRAF, endoplasmic reticulum stress, and autophagy: Crosstalk and therapeutic targets in cutaneous melanoma. Mutat Res Rev Mutat Res 2020; 785:108321. [PMID: 32800272 DOI: 10.1016/j.mrrev.2020.108321] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 06/29/2020] [Accepted: 07/01/2020] [Indexed: 01/07/2023]
Abstract
BRAF is a member of the RAF family of serine/threonine-specific protein kinases. Oncogenic BRAF, in particular, BRAF V600E, can disturb the normal protein folding machinery in the endoplasmic reticulum (ER) leading to accumulation of unfolded/misfolded proteins in the ER lumen, a condition known as endoplasmic reticulum (ER) stress. To alleviate such conditions, ER-stressed cells have developed a highly robust and adaptable signaling network known as unfolded protein response (UPR). UPR is ordinarily a cytoprotective response and usually operates through the induction of autophagy, an intracellular lysosomal degradation pathway that directs damaged proteins, protein aggregates, and damaged organelles for bulk degradation and recycling. Both ER stress and autophagy are involved in the progression and chemoresistance of melanoma. Melanoma, which arises as a result of malignant transformation of melanocytes, exhibits exceptionally high therapeutic resistance. Many mechanisms of therapeutic resistance have been identified in individual melanoma patients and in preclinical BRAF-driven melanoma models. Recently, it has been recognized that oncogenic BRAF interacts with GRP78 and removes its inhibitory influence on the three fundamental ER stress sensors of UPR, PERK, IRE1α, and ATF6. Dissociation of GRP78 from these ER stress sensors prompts UPR that subsequently activates cytoprotective autophagy. Thus, pharmacological inhibition of BRAF-induced ER stress-mediated autophagy can potentially resensitize BRAF mutant melanoma tumors to apoptosis. However, the underlying molecular mechanism of how oncogenic BRAF elevates the basal level of ER stress-mediated autophagy in melanoma tumors is not well characterized. A better understanding of the crosstalk between oncogenic BRAF, ER stress and autophagy may provide a rationale for improving existing cancer therapies and identify novel targets for therapeutic intervention of melanoma.
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Affiliation(s)
- Rafiq A Rather
- School of Biotechnology, University of Jammu, Jammu and Kashmir, 180006, India.
| | - Madhulika Bhagat
- School of Biotechnology, University of Jammu, Jammu and Kashmir, 180006, India
| | - Shashank K Singh
- Cancer Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, 180001, India
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Paz MFCJ, Braga AL, de Meneses APM, de Carvalho RM, de Aguiar RPS, Cronemberger LAC, da Silva MBS, de Lima RMT, de Alencar MVOB, Duarte JL, Islam MT, Marcelo de Castro E Sousa J, Mubarak MS, Melo-Cavalcante AAC. Ascorbic acid and retinol palmitate modulatory effect on omeprazole-induced oxidative damage, and the cytogenetic changes in S. cerevisiae and S180 cells. Chem Biol Interact 2019; 311:108776. [PMID: 31369745 DOI: 10.1016/j.cbi.2019.108776] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/13/2019] [Accepted: 07/29/2019] [Indexed: 11/23/2022]
Abstract
Omeprazole (OM), a prototype proton pump inhibitor, oxidizes thiol groups and induces DNA damage. The aim of this study was to evaluate the oxidative effects of omeprazole and its interactions with ascorbic acid (AA, 50 μM) and retinol palmitate (RP) in proficient and deficient Saccharomyces cerevisiae strains, as well as levels of cytogenetic damage in Sarcoma 180 (S180) cells. Omeprazole was tested at concentrations of 10, 20 and 40 μg/mL, whereas H2O2 (10 mM), cyclophosphamide (20 mg/mL), and saline (0.9% NaCl solution) were employed as stressor, positive control, and negative control, respectively. Results revealed that omeprazole concentration-dependently induces oxidative effects in S. cerevisiae strains. However, omeprazole co-treated with ascorbic acid (50 μM) and retinol palmitate (100 IU) significantly modulated the oxidative damage inflected on the S. cerevisiae strains. Furthermore, omeprazole did not produce micronucleus formation and chromosomal bridges in S180 cells, but induced shoots. Significant increase in karyolysis and karyorrhexis were also observed with the omeprazole treated groups, which was modulated by co-treatment with ascorbic acid and retinol palmitate. Taken all together, it is suggested that ascorbic acid and retinol palmitate can substantially modulate the oxidative damage caused by omeprazole on the S. cerevisiae strains, however, much precaution is recommended with omeprazole and antioxidant co-treatment.
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El-Gazzar MG, El-Hazek RM, Zaher NH, El-Ghazaly MA. Design and synthesis of novel pyridazinoquinazoline derivatives as potent VEGFR-2 inhibitors: In vitro and in vivo study. Bioorg Chem 2019; 92:103251. [PMID: 31525526 DOI: 10.1016/j.bioorg.2019.103251] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/31/2019] [Accepted: 09/03/2019] [Indexed: 02/07/2023]
Abstract
Worldwide, Hepatocellular Carcinoma (HCC) endures to be a prominent cause of cancer death. Treatment of HCC follows multiple therapies which are not entirely applicable for treatment of all patients. HCC usually arises contextual to chronic liver diseases and is often discovered at later stages which makes treatment options more complex. The present study aimed at design, synthesis & evaluation of new pyridazinoquinazoline derivatives as potential nontoxic anti-hepatocellular carcinoma (HCC) agents, through inhibition of Vascular endothelial growth factor -2 (VEGFR-2). Novel Pyridazino[3, 4, 5-de]quinazoline derivatives (2-6) were designed & synthesized. Their structures were confirmed via spectral and microanalytical data. They were tested for their in vitro VEGFR-2 inhibition & anticancer activity against human liver cancer cell line (HEPG-2). Molecular docking was investigated into VEGFR-2 site. In vivo studies of VEGRF-2 inhibition and the anti-apoptotic effect of the new compounds were determined in liver of irradiated rats. Toxicity of synthesized compounds was also assessed. The results showed that compounds 3-6 have significant antitumor activity and proved to be non-toxic. The ethoxy aniline derivative 6, exhibited the highest activity both in vitro and in vivo compared to the reference drug used, sorafenib. Compound 6 could be considered a promising nontoxic anti HCC agent and this could be partially attributed to its VEGFR-2 inhibition. Future preclinical investigation would be carried out to confirm the specific and exact mechanism of action of these derivatives especially compound 6 as an effective pharmaceutical agent after full toxicological and pharmacological assessment.
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Affiliation(s)
- Marwa G El-Gazzar
- Department of Drug Radiation Research, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), PO Box 29, Nasr City, Cairo 11765, Egypt
| | - Rania M El-Hazek
- Department of Drug Radiation Research, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), PO Box 29, Nasr City, Cairo 11765, Egypt
| | - Nashwa H Zaher
- Department of Drug Radiation Research, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), PO Box 29, Nasr City, Cairo 11765, Egypt.
| | - Mona A El-Ghazaly
- Department of Drug Radiation Research, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), PO Box 29, Nasr City, Cairo 11765, Egypt
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Liu Z, Wang S, Zhang J, Wang Y, Wang Y, Zhang L, Zhang L, Li L, Dong J, Wang B. Gastrodin, a traditional Chinese medicine monomer compound, can be used as adjuvant to enhance the immunogenicity of melanoma vaccines. Int Immunopharmacol 2019; 74:105699. [DOI: 10.1016/j.intimp.2019.105699] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 05/26/2019] [Accepted: 06/13/2019] [Indexed: 12/17/2022]
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Messias Sandes J, Nascimento Moura DM, Divina da Silva Santiago M, Barbosa de Lima G, Cabral Filho PE, da Cunha Gonçalves de Albuquerque S, de Paiva Cavalcanti M, Fontes A, Bressan Queiroz Figueiredo RC. The effects of endoplasmic reticulum stressors, tunicamycin and dithiothreitol on Trypanosoma cruzi. Exp Cell Res 2019; 383:111560. [PMID: 31437457 DOI: 10.1016/j.yexcr.2019.111560] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 08/14/2019] [Accepted: 08/17/2019] [Indexed: 12/12/2022]
Abstract
In higher eukaryotic cells, pertubations in ER environment, called ER stress, usually activate unfolded protein response (UPR) pathway in an attempt to re-stablish the ER homeostasis and prevent cell death. Because trypanosomatids appear to lack the classical UPR, it is not clear how these parasites respond to ER stress. Thus, the aim of this work was to evaluate the effects of ER stressors tunicamycin (TM) or dithiothreitol (DTT) on Trypanosoma cruzi. The TM treatment showed strong trypanostatic effect. At 2.5 μg/mL of TM, the mRNA levels of both binding protein (BiP) and calreticulin (CRT) increased significantly, whereas the protein levels of BiP remained stable. TM treatment induced ultrastructural changes compatible with an autophagic process. The DTT treatment inhibited the cell growth, induced drastic morphological changes, mitochondrial membrane depolarization and increased ROS production. The expression of BiP apparently was not affected by DTT, whereas the mRNA levels of BiP and CRT were significantly reduced. Our results suggest that TM induces autophagy/ER-phagy without causing substantial injury to the parasite. Conversely, the DTT treatment seems to rupture the mitochondrion homeostasis leading to parasite death. The comprehension of the mechanisms behind the susceptibility of T. cruzi to ER stress open perspectives for the development of chemotherapeutic agents addressed to these pathways.
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Affiliation(s)
- Jana Messias Sandes
- Departamento de Microbiologia, Instituto Aggeu Magalhães/FIOCRUZ, Recife, Pernambuco, Brazil; Laboratório de Imunopatologia Keizo Asami - LIKA, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
| | | | | | - Gustavo Barbosa de Lima
- Departamento de Microbiologia, Instituto Aggeu Magalhães/FIOCRUZ, Recife, Pernambuco, Brazil.
| | - Paulo Euzébio Cabral Filho
- Departamento de Biofísica e Radiobiologia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
| | | | | | - Adriana Fontes
- Departamento de Biofísica e Radiobiologia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
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Zarić RŽ, Pirković MS, Hamzagić N. Ruthenium(II) Complexes as Potential Apoptosis Inducers in Cancer Therapy. Serbian Journal of Experimental and Clinical Research 2019; 0:000010247820190016. [DOI: 10.2478/sjecr-2019-0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
The compound cis-diamminedichloroplatinum(II) (cisplatin) is the most widely used anticancer drug, but due to its serious side effects (including gastrointestinal symptoms, renal tubular injury, neuromuscular complications, and ototoxicity), clinical applications of cisplatin are limited. Therefore, these limitations have provided an encouragement for further research into other transition metal complexes, with an aim to overcome the disadvantages related with cisplatin therapy. In the search for effective complexes that can be targeted against tumor cells, many research groups synthesized various ruthenium( II) complexes with different ligands. Also, newly synthesized ruthenium(II) complexes showed selective anticancer activity against different types of cancer cells. Activity of ruthenium(II) complexes in some cases was even higher than that of cisplatin against the same cells. Precise mechanism of action of ruthenium(II) complexes is not fully understood. The different examples mentioned in this review showed that ruthenium(II) complexes decreased viability of cancer cells by induction of apoptosis and/or by cell cycle arrest which implies their different mechanism of action against different types of cancer cells.
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Hao P, Cui X, Liu J, Li M, Fu Y, Liu Q. Identification and characterization of stearoyl-CoA desaturase in Toxoplasma gondii. Acta Biochim Biophys Sin (Shanghai) 2019; 51:615-626. [PMID: 31139819 DOI: 10.1093/abbs/gmz040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Indexed: 12/29/2022] Open
Abstract
Few information of the function of stearoyl-coenzyme A (CoA) desaturase (SCD) in apicomplaxan parasite has been obtained. In this study, we retrieved a putative fatty acyl-CoA desaturase (TGGT1_238950) by a protein alignment with Plasmodium falciparum SCD in ToxoDB. A typical Δ9-desaturase domain was revealed in this protein. The putative desaturase was tagged with HA endogenously in Toxoplasma gondii, and the endoplasmic reticulum localization of the putative desaturase was revealed, which was consistent with the fatty acid desaturases in other organisms. Therefore, the TGGT1_238950 was designated T. gondii SCD. Based on CRISPR/Cas9 gene editing technology, SCD conditional knockout mutants in the T. gondii TATi strain were obtained. The growth in vitro and pathogenicity in mice of the mutants suggested that SCD might be dispensable for tachyzoite growth and proliferation. The SCD-overexpressing line was constructed to further explore SCD function. The portion of palmitoleic acid and oleic acid were increased in SCD-overexpressing parasites, compared with the RH parental strain, indicating that T. gondii indeed is competent for unsaturated fatty acid synthesis. The SCD-overexpressing tachyzoites propagated slower than the parental strain, with a decreased invasion capability and weaker pathogenicity in mice. The TgIF2α phosphorylation and the expression changes of several genes demonstrated that ER stress was triggered in the SCD-overexpressing parasites, which were more apt toward autophagy and apoptosis. The function of unsaturated fatty acid synthesis of TgSCD was consistent with our hypothesis. On the other hand, SCD might also be involved in tachyzoite autophagy and apoptosis.
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Affiliation(s)
- Pan Hao
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
- Patent Examination Cooperation Sichuan Center of the Patent Office, CNIPA, Chengdu, China
| | - Xia Cui
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Research Centre for Preventive Medicine, Beijing, China
| | - Jing Liu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Muzi Li
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yong Fu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Qun Liu
- National Animal Protozoa Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
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Hu H, Wang C, Jin Y, Meng Q, Liu Q, Liu Z, Liu K, Liu X, Sun H. Catalpol Inhibits Homocysteine-induced Oxidation and Inflammation via Inhibiting Nox4/NF-κB and GRP78/PERK Pathways in Human Aorta Endothelial Cells. Inflammation 2019; 42:64-80. [PMID: 30315526 DOI: 10.1007/s10753-018-0873-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Hyperhomocysteinemia (HHCY) has been recognized as an independent risk factor for atherosclerosis and plays a vital role in the development of atherosclerosis. Catalpol, an iridoid glucoside extracted from the root of Rehmannia glutinosa, can produce anti-inflammatory, anti-oxidant, anti-tumor, and dopaminergic neurons protecting effects. This study aimed to determine the protecting effects of catalpol against homocysteine (HCY)-induced injuries in human aortic endothelial cells (HAECs) and uncover the underlying mechanisms: 1. HAECs were cultured with different concentrations of HCY (3 mM) and catalpol (7.5 μΜ, 15 μΜ, 30 μΜ) for 24 h. (1) The level of MDA and GSH as well as LDH release was measured with colorimetric assay. (2) Reactive oxygen species (ROS) were detected by flow cytometry analysis. (3) Western blotting analysis was performed to detect the expression of Nox4, p22phox, ICAM-1, MCP-1, VCAM-1, IκB, nucleus p65, p65 phosphorylation, caspase-3, −9, bax, bcl-2, and ER stress-related proteins. (4) The expressions of CHOP, ATF4 were measured by qRT-PCR. (5) Mitochondrial membrane potential in HCY-treated HAECs was measured by rhodamine 123 staining, and the samples were observed by confocal laser scanning microscopy. 2. DPI, PDTC, and TUDCA were used to determine the interaction among Nox4/ROS, NF-κB, and endoplasmic reticulum stress. 3. TUDCA or Nox4 siRNA were used to investigate whether the effect of catalpol inhibiting the over-production of ROS were associated with inhibiting ER stress and Nox4 expression. Catalpol significantly suppressed LDH release, MDA level, and the reduction of GSH. Catalpol reduced HCY-stimulated ROS over-generation, inhibited the NF-κB transcriptional activation as well as the protein over-expressions of Nox4, ICAM-1, VCAM-1, and MCP-1. Catalpol elevated bcl-2 protein expression and reduced bax, caspase-3, −9 protein expressions in the HCY-treated HAECs. Simultaneously, catalpol could also inhibit the activation of ER stress-associated sensors GRP78, IRE1α, ATF6, P-PERK, P-eIF2α, CHOP, and ATF4 induced by HCY. In addition, the extent of catalpol inhibiting ROS over-generation and NF-κB signaling pathway was reduced after inhibiting Nox4 or ER stress with DPI or TUDCA. The inhibitor of NF-κB PDTC also reduced the effects of catalpol inhibiting the expressions of Nox4 and GRP78. Furthermore, the effect of catalpol inhibiting the over-generation of ROS was reduced by Nox4 siRNA. Catalpol could ameliorate HCY-induced oxidation, cells apoptosis and inflammation in HAECs possibly by inhibiting Nox4/NF-κB and ER stress.
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D'Arcangelo D, Giampietri C, Muscio M, Scatozza F, Facchiano F, Facchiano A. WIPI1, BAG1, and PEX3 Autophagy-Related Genes Are Relevant Melanoma Markers. Oxid Med Cell Longev 2018; 2018:1471682. [PMID: 30622661 DOI: 10.1155/2018/1471682] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 10/09/2018] [Indexed: 01/07/2023]
Abstract
ROS and oxidative stress may promote autophagy; on the other hand, autophagy may help reduce oxidative damages. According to the known interplay of ROS, autophagy, and melanoma onset, we hypothesized that autophagy-related genes (ARGs) may represent useful melanoma biomarkers. We therefore analyzed the gene and protein expression of 222 ARGs in human melanoma samples, from 5 independent expression databases (overall 572 patients). Gene expression was first evaluated in the GEO database. Forty-two genes showed extremely high ability to discriminate melanoma from nevi (63 samples) according to ROC (AUC ≥ 0.85) and Mann-Whitney (p < 0.0001) analyses. The 9 genes never related to melanoma before were then in silico validated in the IST online database. BAG1, CHMP2B, PEX3, and WIPI1 confirmed a strong differential gene expression, in 355 samples. A second-round validation performed on the Human Protein Atlas database showed strong differential protein expression for BAG1, PEX3, and WIPI1 in melanoma vs control samples, according to the image analysis of 80 human histological sections. WIPI1 gene expression also showed a significant prognostic value (p < 0.0001) according to 102 melanoma patients' survival data. We finally addressed in Oncomine database whether WIPI1 overexpression is melanoma-specific. Within more than 20 cancer types, the most relevant WIPI1 expression change (p = 0.00002; fold change = 3.1) was observed in melanoma. Molecular/functional relationships of the investigated molecules with melanoma and their molecular/functional network were analyzed via Chilibot software, STRING analysis, and gene ontology enrichment analysis. We conclude that WIPI1 (AUC = 0.99), BAG1 (AUC = 1), and PEX3 (AUC = 0.93) are relevant novel melanoma markers at both gene and protein levels.
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Mattia G, Puglisi R, Ascione B, Malorni W, Carè A, Matarrese P. Cell death-based treatments of melanoma:conventional treatments and new therapeutic strategies. Cell Death Dis 2018; 9:112. [PMID: 29371600 DOI: 10.1038/s41419-017-0059-7] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/17/2017] [Accepted: 07/25/2017] [Indexed: 12/15/2022]
Abstract
The incidence of malignant melanoma has continued to rise during the past decades. However, in the last few years, treatment protocols have significantly been improved thanks to a better understanding of the key oncogenes and signaling pathways involved in its pathogenesis and progression. Anticancer therapy would either kill tumor cells by triggering apoptosis or permanently arrest them in the G1 phase of the cell cycle. Unfortunately, melanoma is often refractory to commonly used anticancer drugs. More recently, however, some new anticancer strategies have been developed that are “external” to cancer cells, for example stimulating the immune system’s response or inhibiting angiogenesis. In fact, the increasing knowledge of melanoma pathogenetic mechanisms, in particular the discovery of genetic mutations activating specific oncogenes, stimulated the development of molecularly targeted therapies, a form of treatment in which a drug (chemical or biological) is developed with the goal of exclusively destroying cancer cells by interfering with specific molecules that drive growth and spreading of the tumor. Again, after the initial exciting results associated with targeted therapy, tumor resistance and/or relapse of the melanoma lesion have been observed. Hence, very recently, new therapeutic strategies based on the modulation of the immune system function have been developed. Since cancer cells are known to be capable of evading immune-mediated surveillance, i.e., to block the immune system cell activity, a series of molecular strategies, including monoclonal antibodies, have been developed in order to “release the brakes” on the immune system igniting immune reactivation and hindering metastatic melanoma cell growth. In this review we analyze the various biological strategies underlying conventional chemotherapy as well as the most recently developed targeted therapies and immunotherapies, pointing at the molecular mechanisms of cell injury and death engaged by the different classes of therapeutic agents.
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He J, Dong L, Xu K, Qian Y, Wang C, Sha Y, Zhong JL, Liu W, Lv Y, Song Y, Yang L. Mechano growth factor E peptide inhibits invasion of melanoma cells and up-regulates CHOP expression via endoplasmic reticulum stress. Biotechnol Lett 2017; 40:205-213. [DOI: 10.1007/s10529-017-2448-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 09/28/2017] [Indexed: 01/01/2023]
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15
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Kowalski S, Hać S, Wyrzykowski D, Zauszkiewicz-Pawlak A, Inkielewicz-Stępniak I. Selective cytotoxicity of vanadium complexes on human pancreatic ductal adenocarcinoma cell line by inducing necroptosis, apoptosis and mitotic catastrophe process. Oncotarget 2017; 8:60324-60341. [PMID: 28947974 PMCID: PMC5601142 DOI: 10.18632/oncotarget.19454] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 05/22/2017] [Indexed: 02/07/2023] Open
Abstract
The pancreatic cancer is the fourth leading cause of cancer-related death and characterized by one of the lowest five-year survival rate. The current therapeutic options are demonstrating minimal effectiveness, therefore studies on new potential anticancer compounds, with non-significant side effects are highly desirable. Recently, it was demonstrated that vanadium compounds, in particular organic derivatives, exhibit anticancer properties against different type of tumor as well as favorable biodistribution from a pancreatic cancer treatment perspective. In this research, we showed selective cytotoxic effect of vanadium complexes, containing phenanthroline and quinoline as an organic ligands, against human pancreatic ductal adenocarcinoma cell line (PANC-1), compared to non-tumor human immortalized pancreas duct epithelial cells (hTERT-HPNE). Results exhibited that vanadium complexes inhibited autophagy process in selective cytotoxic concentration as well as caused the cell cycle arrest in G2/M phase associated with mitotic catastrophe and increased level of reactive oxygen species (ROS). Moreover, in higher concentration, vanadium derivatives induced a mix type of cell death in PANC-1 cells, including apoptotic and necroptotic process. Our investigation emphasizes the anticancer potential of vanadium complexes by indicating their selective cytotoxic activity, through different process posed by alternative type of cell deaths to apoptosis-resistant cancer cells. Further studies supporting the therapeutic potential of vanadium in pancreatic cancer treatment is highly recommended.
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Affiliation(s)
- Szymon Kowalski
- Department of Medical Chemistry, Medical University of Gdansk, Gdansk, Poland
| | - Stanisław Hać
- Department of General, Endocrine and Transplantation Surgery, Medical University of Gdansk, Gdansk, Poland
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Singh S, Zafar A, Khan S, Naseem I. Towards therapeutic advances in melanoma management: An overview. Life Sci 2017; 174:50-58. [PMID: 28238718 DOI: 10.1016/j.lfs.2017.02.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 02/16/2017] [Accepted: 02/21/2017] [Indexed: 12/29/2022]
Abstract
Melanoma is one of the most aggressive types of skin cancer with rapidly increasing incidence rate. The disease is largely considered incurable and the patients diagnosed with metastatic melanoma have a survival of not more than five years. Despite of the recent advances in anti-melanoma chemo- and immunotherapies, the available drugs are relatively toxic and responsive to only a limited subset of lesions. Currently, topical pharmacotherapy is demonstrated as an effective approach for the treatment of various skin cancers. Also, in vitro testing of melanoma cell lines and murine melanoma models has identified a number of relatively safe and effective phytochemicals. In this review, we described the use of topical pharmacotherapy for the treatment of skin cancers. Melanoma treatment by drugs targeting MAPK-pathway has also been discussed. Long non-coding RNAs and therapeutics targeting ER-associated pathways looks quite promising for the treatment of melanoma. Moreover, some natural anticancer compounds that have been reported to have anti-melanoma effects have also been described. At present a better understanding of genetics and epigenetics of initiation and progression of melanoma is needed for the identification of novel biomarkers and development of targeted therapeutics against melanoma.
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Affiliation(s)
- Swarnendra Singh
- Department of Dermatology and Venereology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110 029, India
| | - Atif Zafar
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Saman Khan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Imrana Naseem
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India.
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17
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Li Z, Wu F, Zhang X, Chai Y, Chen D, Yang Y, Xu K, Yin J, Li R, Shi H, Wang Z, Li X, Xiao J, Zhang H. Valproate Attenuates Endoplasmic Reticulum Stress-Induced Apoptosis in SH-SY5Y Cells via the AKT/GSK3β Signaling Pathway. Int J Mol Sci 2017; 18:ijms18020315. [PMID: 28208696 PMCID: PMC5343851 DOI: 10.3390/ijms18020315] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 01/12/2017] [Accepted: 01/27/2017] [Indexed: 12/22/2022] Open
Abstract
Endoplasmic reticulum (ER) stress-induced apoptosis plays an important role in a range of neurological disorders, such as neurodegenerative diseases, spinal cord injury, and diabetic neuropathy. Valproate (VPA), a typical antiepileptic drug, is commonly used in the treatment of bipolar disorder and epilepsy. Recently, VPA has been reported to exert neurotrophic effects and promote neurite outgrowth, but its molecular mechanism is still unclear. In the present study, we investigated whether VPA inhibited ER stress and promoted neuroprotection and neuronal restoration in SH-SY5Y cells and in primary rat cortical neurons, respectively, upon exposure to thapsigargin (TG). In SH-SY5Y cells, cell viability was detected by the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay, and the expression of ER stress-related apoptotic proteins such as glucose‑regulated protein (GRP78), C/EBP homologous protein (CHOP), and cleaved caspase-12/-3 were analyzed with Western blot analyses and immunofluorescence assays. To explore the pathway involved in VPA-induced cell proliferation, we also examined p-AKT, GSK3β, p-JNK and MMP-9. Moreover, to detect the effect of VPA in primary cortical neurons, immunofluorescence staining of β-III tubulin and Anti-NeuN was analyzed in primary cultured neurons exposed to TG. Our results demonstrated that VPA administration improved cell viability in cells exposed to TG. In addition, VPA increased the levels of GRP78 and p-AKT and decreased the levels of ATF6, XBP-1, GSK3β, p-JNK and MMP-9. Furthermore, the levels of the ER stress-induced apoptosis response proteins CHOP, cleaved caspase-12 and cleaved caspase-3 were inhibited by VPA treatment. Meanwhile, VPA administration also increased the ratio of Bcl-2/Bax. Moreover, VPA can maintain neurite outgrowth of primary cortical neurons. Collectively, the neurotrophic effect of VPA is related to the inhibition of ER stress-induced apoptosis in SH-SY5Y cells and the maintenance of neuronal growth. Collectively, our results suggested a new approach for the therapeutic function of VPA in neurological disorders and neuroprotection.
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Affiliation(s)
- Zhengmao Li
- Key Laboratory of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Fenzan Wu
- Science and Education division, Cixi People's Hospital, Wenzhou Medical University, Ningbo 315300, China.
| | - Xie Zhang
- Ningbo Medical Treatment Center, Li Huili Hospital, Ningbo 315000, China.
| | - Yi Chai
- Department of neurosurgery, The second Affiliated Hospital, Nanchang University, Nanchang 330006, China.
| | - Daqing Chen
- Emergency Department, The Second Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China.
| | - Yuetao Yang
- Emergency Department, The Second Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, China.
| | - Kebin Xu
- Key Laboratory of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Jiayu Yin
- Key Laboratory of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Rui Li
- Key Laboratory of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Hongxue Shi
- Key Laboratory of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Zhouguang Wang
- Key Laboratory of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Xiaokun Li
- Key Laboratory of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
- Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China.
| | - Jian Xiao
- Key Laboratory of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
| | - Hongyu Zhang
- Key Laboratory of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China.
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18
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Chen RJ, Lee YH, Yeh YL, Wu WS, Ho CT, Li CY, Wang BJ, Wang YJ. Autophagy-inducing effect of pterostilbene: A prospective therapeutic/preventive option for skin diseases. J Food Drug Anal 2016; 25:125-133. [PMID: 28911530 PMCID: PMC9333432 DOI: 10.1016/j.jfda.2016.10.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 10/03/2016] [Accepted: 10/03/2016] [Indexed: 12/24/2022] Open
Abstract
Pterostilbene is a naturally occurring analog of resveratrol with many health benefits. These health benefits are associated with its antioxidant activity, anti-inflammatory effects, and chemopreventive effects attributed to its unique structure. The skin cancer chemopreventive potential of pterostilbene is supported by a variety of mechanistic studies confirming the anti-inflammatory effects in skin cancer models. Molecular biological studies have identified that pterostilbene targets pleotropic signaling pathways, including those involved in mitogenesis, cell cycle regulation, and apoptosis. Recently, pterostilbene has been reported to induce autophagy in cancer and normal cells. Through autophagy induction, the inflammatory-related skin diseases can be attenuated. This finding suggests the potential use of pterostilbene in the treatment and prevention of skin disorders via alleviating inflammatory responses by autophagy induction. This review summarizes the protective and therapeutic benefits of pterostilbene in skin diseases from the viewpoint of its antioxidant, anti-inflammatory, and autophagy-inducing effects. Novel underlying mechanisms regarding these effects are discussed. We proposed that pterostilbene, a promising natural product, can be used as a preventive and therapeutic agent for inflammation-related skin disorders through induction of autophagy.
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Affiliation(s)
- Rong-Jane Chen
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Hsuan Lee
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ya-Ling Yeh
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wun-Syuan Wu
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, New Brunswick, NJ, USA
| | - Chia-Yi Li
- Robert Thirsk High School, Calgary, AB, Canada
| | - Bour-Jr Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, Tainan, Taiwan; Department of Cosmetic Science and Institute of Cosmetic Science, Chia Nan University of Pharmacy and Science, Tainan, Taiwan.
| | - Ying-Jan Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Biomedical Informatics, Asia University, Taichung, Taiwan; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan; Graduate Institute of Clinical Medicine, Taipei Medical University, Taipei 110, Taiwan.
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19
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Tang JY, Jin P, He Q, Lu LH, Ma JP, Gao WL, Bai HP, Yang J. Naringenin ameliorates hypoxia/reoxygenation-induced endoplasmic reticulum stress-mediated apoptosis in H9c2 myocardial cells: involvement in ATF6, IRE1α and PERK signaling activation. Mol Cell Biochem 2016; 424:111-122. [PMID: 27785700 DOI: 10.1007/s11010-016-2848-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 10/14/2016] [Indexed: 02/07/2023]
Abstract
Naringenin, a flavanone mainly derived from grapes and citrus fruits, has been reported to exhibit cardioprotective effects. Accumulating evidence has confirmed that endoplasmic reticulum (ER) stress-mediated apoptosis participates in the process of myocardial ischemia/reperfusion injury and inhibiting ER stress is a potential therapeutic target/strategy in preventing cardiovascular diseases. Herein, the current study was designed to investigate whether naringenin protects H9c2 myocardial cells against hypoxia/reoxygenation (H/R) injury via attenuating ER stress or ER stress-mediated apoptosis. Our results showed that naringenin treatment resulted in obvious increases in the viability of H9c2 cells and the expression of Bcl-2 (anti-apoptotic protein), and decreases in the morphological changes of apoptotic cells, the activity of caspase-3 and the expression of Bax (pro-apoptotic protein) in H/R-treated H9c2 cells, implying the protective effects of naringenin against H/R-induced injury. In addition, naringenin also significantly reversed H/R-induced ER stress as evidenced by the up-regulation of Glucose-regulated protein 78, C/EBP homologous protein and Cleaved caspase-12 proteins. Meanwhile, naringenin remarkably reversed H/R-induced the increases in the expression of cleaved activating transcription factor 6 (ATF6) and phosphorylation levels of phospho-extracellular regulated protein kinases (PERK) and inositol-requiring enzyme-1α (IRE1α) in H9c2 cells. Finally, we found that ATF6 siRNA, PERK siRNA or IRE1α siRNA abolished H/R-induced cytotoxicity and apoptosis in H9c2 cells. In conclusion, these results confirmed that ER stress-mediated apoptosis contributes to the protection effects of naringenin against H/R injury, which is potentially involved in ATF6, IRE1α and PERK signaling activation.
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Affiliation(s)
- Jia-You Tang
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, 169 W Changle West Road, Xi'an, 710032, Shanxi, People's Republic of China
| | - Ping Jin
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, 169 W Changle West Road, Xi'an, 710032, Shanxi, People's Republic of China
| | - Qing He
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, 169 W Changle West Road, Xi'an, 710032, Shanxi, People's Republic of China
| | - Lin-He Lu
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, 169 W Changle West Road, Xi'an, 710032, Shanxi, People's Republic of China
| | - Ji-Peng Ma
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, 169 W Changle West Road, Xi'an, 710032, Shanxi, People's Republic of China
| | - Wei-Lun Gao
- Department of Cardiovascular Surgery, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, People's Republic of China
| | - He-Ping Bai
- Department of Thoracic and Cardiovascular Surgery, The Second Hospital of Yulin, Yulin, 719000, Shanxi, People's Republic of China
| | - Jian Yang
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, 169 W Changle West Road, Xi'an, 710032, Shanxi, People's Republic of China.
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20
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Gonçalves PR, Rocha-Brito KJ, Fernandes MR, Abrantes JL, Durán N, Ferreira-Halder CV. Violacein induces death of RAS-mutated metastatic melanoma by impairing autophagy process. Tumour Biol 2016; 37:14049-58. [PMID: 27502397 DOI: 10.1007/s13277-016-5265-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 07/15/2016] [Indexed: 12/22/2022] Open
Abstract
Treatment of metastatic melanoma still remains a challenge, since in advanced stage it is refractory to conventional treatments. Most patients with melanoma have either B-RAF or N-RAS mutations, and these oncogenes lead to activation of the RAS-RAF-MEK-ERK and AKT signal pathway, keeping active the proliferation and survival pathways in the cell. Therefore, the identification of small molecules that block metastatic cell proliferation and induce cell death is needed. Violacein, a pigment produced by Chromobacterium violaceum found in Amazon River, has been used by our group as a biotool for scrutinizing signaling pathways associated with proliferation, survival, aggressiveness, and resistance of cancer cells. In the present study, we demonstrate that violacein diminished the viability of RAS- and RAF-mutated melanoma cells (IC50 value ∼500 nM), and more important, this effect was not abolished after treatment medium removal. Furthermore, violacein was able to reduce significantly the invasion capacity of metastatic melanoma cells in 3D culture. In the molecular context, we have shown for the first time that violacein causes a strong drop on histone deacetylase 6 expression, a proliferating activator, in melanoma cells. Besides, an inhibition of AXL and AKT was detected. All these molecular events propitiate an inhibition of autophagy, and consequently, melanoma cell death by apoptosis.
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21
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Montagnani Marelli M, Marzagalli M, Moretti RM, Beretta G, Casati L, Comitato R, Gravina GL, Festuccia C, Limonta P. Vitamin E δ-tocotrienol triggers endoplasmic reticulum stress-mediated apoptosis in human melanoma cells. Sci Rep 2016; 6:30502. [PMID: 27461002 PMCID: PMC4996065 DOI: 10.1038/srep30502] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 07/06/2016] [Indexed: 12/13/2022] Open
Abstract
Malignant melanoma is the leading cause of death from skin cancer. Drug toxicity and resistance represent a serious challange for melanoma treatments. Evidence demonstrates that natural compounds may play a crucial role in cancer prevention, growth and progression. Vitamin E tocotrienols (TT) were shown to possess antitumor activity. Here, we analyzed the effects of δ-TT on melanoma cell growth and the involvement of the endoplasmic reticulum (ER) stress in this activity. The experiments were performed on human melanoma cell lines, BLM and A375. δ-TT exerted a significant proapoptotic effect on both cell lines, involving the intrinsic apoptosis pathway; importantly, this compound did not affect the viability of normal human melanocytes. In melanoma cells, δ-TT exerted its antitumor effect through activation of the PERK/p-eIF2α/ATF4/CHOP, IRE1α and caspase-4 ER stress-related branches. Salubrinal, an inhibitor of the ER stress, counteracted the cytotoxic activity of δ-TT. In vivo experiments performed in nude mice bearing A375 xenografts evidenced that δ-TT reduces tumor volume and tumor mass; importantly, tumor progression was significantly delayed by δ-TT treatment. In conclusion, δ-TT exerts a proapoptotic activity on melanoma cells, through activation of the ER stress-related pathways. δ-TT might represent an effective option for novel chemopreventive/therapeutic strategies for melanoma.
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Affiliation(s)
- Marina Montagnani Marelli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, 20133, Italy
| | - Monica Marzagalli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, 20133, Italy
| | - Roberta M. Moretti
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, 20133, Italy
| | - Giangiacomo Beretta
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Milano, 20133, Italy
| | - Lavinia Casati
- Department of Medical Biotechnologies and Translational Medicine, Università degli Studi di Milano, Milano, 20129, Italy
| | - Raffaella Comitato
- Council for Agricultural Research and Economics, Food and Nutrition Research Centre, Roma, 00178, Italy
| | - Giovanni L. Gravina
- Department of Applied and Biotechnological Clinical Sciences, Università degli Studi dell’Aquila, L’Aquila, 67100, Italy
| | - Claudio Festuccia
- Department of Applied and Biotechnological Clinical Sciences, Università degli Studi dell’Aquila, L’Aquila, 67100, Italy
| | - Patrizia Limonta
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, 20133, Italy
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22
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El-Ashmawy NE, Khedr EG, El-Bahrawy HA, Abd El-Fattah EE. Effect of Pomegranate Hull Extract on Liver Neoplastic Changes in Rats: More than an Antioxidant. Nutr Cancer 2016; 68:1044-51. [DOI: 10.1080/01635581.2016.1192205] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Abstract
Because of their elevated steady-state stress level, cancer cells are particularly sensitive to perturbation of mechanisms regulating protein homeostasis. In this issue, Cerezo and colleagues show that pharmacologic modulation of GRP78, master regulator of the unfolded protein response in the endoplasmic reticulum, can be exploited for cancer treatment.
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Affiliation(s)
- Wanping Xu
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Len Neckers
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, 9000 Rockville Pike, Bethesda, MD 20892, USA.
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24
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El-Ashmawy NE, Khedr EG, El-Bahrawy HA, Abd El-Fattah EE. Sorafenib effect on liver neoplastic changes in rats: more than a kinase inhibitor. Clin Exp Med 2016; 17:185-191. [PMID: 27085325 DOI: 10.1007/s10238-016-0416-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Accepted: 03/30/2016] [Indexed: 01/23/2023]
Abstract
Although sorafenib was approved as antiangiogenic agent in case of hepatocellular carcinoma (HCC), the pathways mediating its antitumorigenic effects were not fully examined in vivo. This study was conducted to elucidate the molecular mechanisms underlying the antineoplastic effect of sorafenib in livers of rats exposed to the hepatocarcinogen diethyl nitrosamine (DENA) regarding oxidative stress, proliferation, and apoptotic pathways. Male albino rats were divided into three groups: normal control, DENA group, and sorafenib group. Sorafenib (10 mg/kg) was given daily to rats orally for 2 weeks, started 6 weeks after DENA (200 mg/kg, single i.p. dose). The histopathological results proved that sorafenib corrected neoplastic changes in the liver as evidenced by a decrease in size of hepatocellular foci. The liver index, glutathione, as well as Bcl-2 were significantly decreased in sorafenib group compared with DENA group. Sorafenib also exhibited antiproliferative effect through suppression of gene expression of cyclin D1 and β-catenin. Thus, the apoptotic and proliferative pathways in HCC could be interrupted by sorafenib, supporting the role of sorafenib as antineoplastic agent and nominating it as a candidate drug for other neoplasms.
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Affiliation(s)
- Nahla E El-Ashmawy
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Eman G Khedr
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Hoda A El-Bahrawy
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
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Zhang SJ, Yang W, Wang C, He WS, Deng HY, Yan YG, Zhang J, Xiang YX, Wang WJ. Autophagy: A double-edged sword in intervertebral disk degeneration. Clin Chim Acta 2016; 457:27-35. [PMID: 27018178 DOI: 10.1016/j.cca.2016.03.016] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 03/17/2016] [Accepted: 03/22/2016] [Indexed: 02/07/2023]
Abstract
Autophagy is a homeostatic mechanism through which intracellular damaged organelles and proteins are degraded and recycled in response to increased metabolic demands or stresses. Although primarily cytoprotective, dysfunction of autophagy is often associated with many degenerative diseases, including intervertebral disc (IVD) degeneration (IDD). As a main contributing factor to low back pain, IDD is the pathological basis for various debilitating spinal diseases. Either higher or lower levels of autophagy are observed in degenerative IVD cells. Despite the precise role of autophagy in disc degeneration that is still controversial, with difference from protection to aggravation, targeting autophagy has shown promise for mitigating disc degeneration. In the current review, we summarize the changes of autophagy in degenerative IVD cells and mainly discuss the relationship between autophagy and IDD. With continued efforts, modulation of the autophagic process could be a potential and attractive therapeutic strategy for degenerative disc disease.
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Affiliation(s)
- Shu-Jun Zhang
- Department of Spine Surgery, the First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Wei Yang
- Department of Spine Surgery, the First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Cheng Wang
- Department of Spine Surgery, the First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Wen-Si He
- Department of Spine Surgery, the First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Hai-Yang Deng
- Department of Spine Surgery, the First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Yi-Guo Yan
- Department of Spine Surgery, the First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Jian Zhang
- Department of Hand and Micro-surgery, the First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Yong-Xiao Xiang
- Department of Hand and Micro-surgery, the First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Wen-Jun Wang
- Department of Spine Surgery, the First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China.
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