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Ng CX, Affendi MM, Chong PP, Lee SH. The Potential of Plant-Derived Extracts and Compounds to Augment Anticancer Effects of Chemotherapeutic Drugs. Nutr Cancer 2022; 74:3058-3076. [PMID: 35675271 DOI: 10.1080/01635581.2022.2069274] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Plant extracts comprise a complex mixture of natural compounds with diverse biological activities including anticancer activities. This has made the use of plant extracts a trending strategy in cancer treatment. In addition, plants' active constituents such as polyphenols could confer protective effects on normal cells against damage by free radicals as well as lessen the toxicity of chemotherapeutic drugs. Recently, many emerging studies revealed the combinatory uses of plant extracts and individual therapeutic compounds that could be a promising panacea in hampering multiple signaling pathways involved in cancer development and progression. Besides enhancing the therapeutic efficacy, this has also been proven to reduce the dosage of chemotherapeutic drugs used, and hence overcome multiple drug resistance and minimize treatment side effects. Notably, combined use of plant extracts with chemotherapeutics drugs was shown to enhance anticancer effects through modulating various signaling pathways, such as P13K/AKT, NF-κB, JNK, ERK, WNT/β-catenin, and many more. Hence, this review aims to comprehensively summarize both In Vitro and In Vivo mechanisms of actions of well-studied plant extracts, such as Ganoderma Lucidum, Korean red ginseng, Garcinia sp., curcumin, and luteolin extracts in augmenting anticancer properties of the conventional chemotherapeutic drugs from an extensive literature search of recent publications.
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Affiliation(s)
- Chu Xin Ng
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Selangor, Malaysia
| | - Muzaira Mazrul Affendi
- School of Health Sciences, Faculty of Medicine and Health Sciences, International Medical University, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Pei Pei Chong
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Selangor, Malaysia
| | - Sau Har Lee
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Selangor, Malaysia.,Centre for Drug Discovery and Molecular Pharmacology (CDDMP), Faculty of Health and Medical Sciences, Taylor's University, Selangor, Malaysia
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Zimmermann-Klemd AM, Reinhardt JK, Winker M, Gründemann C. Phytotherapy in Integrative Oncology-An Update of Promising Treatment Options. Molecules 2022; 27:3209. [PMID: 35630688 PMCID: PMC9143079 DOI: 10.3390/molecules27103209] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/02/2022] [Accepted: 05/10/2022] [Indexed: 02/06/2023] Open
Abstract
Modern phytotherapy is part of today's conventional evidence-based medicine and the use of phytopharmaceuticals in integrative oncology is becoming increasingly popular. Approximately 40% of users of such phytopharmaceuticals are tumour patients. The present review provides an overview of the most important plants and nature-based compounds used in integrative oncology and illustrates their pharmacological potential in preclinical and clinical settings. A selection of promising anti-tumour plants and ingredients was made on the basis of scientific evidence and therapeutic practical relevance and included Boswellia, gingko, ginseng, ginger, and curcumin. In addition to these nominees, there is a large number of other interesting plants and plant ingredients that can be considered for the treatment of cancer diseases or for the treatment of tumour or tumour therapy-associated symptoms. Side effects and interactions are included in the discussion. However, with the regular and intended use of phytopharmaceuticals, the occurrence of adverse side effects is rather rare. Overall, the use of defined phytopharmaceuticals is recommended in the context of a rational integrative oncology approach.
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Affiliation(s)
- Amy M. Zimmermann-Klemd
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 80, CH-4056 Basel, Switzerland; (A.M.Z.-K.); (M.W.)
| | - Jakob K. Reinhardt
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland;
| | - Moritz Winker
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 80, CH-4056 Basel, Switzerland; (A.M.Z.-K.); (M.W.)
| | - Carsten Gründemann
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 80, CH-4056 Basel, Switzerland; (A.M.Z.-K.); (M.W.)
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Wang S, Lin B, Liu W, Wei G, Li Z, Yu N, Xue X, Ji G. Acacetin Induces Apoptosis in Human Osteosarcoma Cells by Modulation of ROS/JNK Activation. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:5077-5085. [PMID: 33239866 PMCID: PMC7680676 DOI: 10.2147/dddt.s275148] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 11/10/2020] [Indexed: 12/20/2022]
Abstract
Purpose The long-term survival rate of osteosarcoma, which is the most common type of primary malignant bone tumor, has stagnated in past decades. Acacetin is a natural flavonoid compound that has antioxidative and anti-inflammatory effects and exhibits extensive therapeutic effects on various cancers. In this study, the anticancer potential of acacetin and the underlying molecular mechanisms were examined in human osteosarcoma cells (SJSA and HOS). Materials and Methods HOS and SJSA cell lines were exposed to different concentrations of acacetin. Cell proliferation and viability were assessed by CCK-8 and colony-formation assays. Hoechst 33258 fluorescent staining was employed to detect apoptosis. Cell apoptosis was measured by an annexin V-FITC/PI assay by flow cytometry. The alteration in the mitochondrial membrane potential was detected by a JC-1 Assay Kit. Apoptosis-related protein expression was determined by Western blotting. Intracellular reactive oxygen species (ROS) production was detected by fluorescence microscopy and flow cytometry. Subsequently, the activation of the ROS/JNK signaling pathway was investigated. Results Acacetin could inhibit proliferation and induce apoptosis in SJSA and HOS cells. The acacetin treatment resulted in the activation of caspase-3, −8, and −9 and cleaved PARP. Further studies showed that acacetin-induced apoptosis was attributed to ROS. In addition, we found that acacetin induced the activation of the downstream c-Jun N-terminal kinase (JNK) signaling pathway. Subsequently, after treatment with the ROS scavenger GSH and the JNK inhibitor SP600125, the apoptosis-inducing effect triggered by acacetin was significantly attenuated. Conclusion The results of the present study indicate that acacetin may induce apoptosis to inhibit cell growth by activating the ROS/JNK signaling pathway in SJSA and HOS cells, suggesting that acacetin may be a promising candidate for the management of osteosarcomas.
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Affiliation(s)
- Shubin Wang
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, Xiamen City, Fujian, People's Republic of China
| | - Binhui Lin
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, Xiamen City, Fujian, People's Republic of China
| | - Wei Liu
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, Xiamen City, Fujian, People's Republic of China
| | - Guojun Wei
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, Xiamen City, Fujian, People's Republic of China
| | - Zongguang Li
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, Xiamen City, Fujian, People's Republic of China
| | - Naichun Yu
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, Xiamen City, Fujian, People's Republic of China
| | - Xiang Xue
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, Xiamen City, Fujian, People's Republic of China
| | - Guangrong Ji
- Department of Orthopedic Surgery, Xiang'an Hospital of Xiamen University, Xiamen City, Fujian, People's Republic of China
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Menke K, Schwermer M, Eisenbraun J, Schramm A, Zuzak TJ. Anticancer Effects of Viscum album Fraxini Extract on Medulloblastoma Cells in vitro. Complement Med Res 2020; 28:15-22. [PMID: 32659760 DOI: 10.1159/000507318] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 03/18/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Mistletoe therapy is frequently administered as a supportive treatment in diverse pediatric cancer entities including brain tumors. Medulloblastoma is the most common brain tumor in childhood. Its high risk to metastasize and its long-term sequelae caused by aggressive chemo- or radiotherapies are still challenging. MATERIAL AND METHODS Effects of a lectin-rich mistletoe extract, abnobaVISCUM Fraxini, were investigated in two medulloblastoma cell lines (Daoy and ONS-76). Responsiveness of tumor cells was assessed by cell viability assays and xCELLigence real-time analyses. Moreover, impacts on proliferation, cell cycle and apoptosis were investigated. Apoptosis was studied by staining of vital mitochondria and assessing the involvement of caspases. In addition, effects on migration and invasion were analyzed. RESULTS Both medulloblastoma cell lines were more susceptible to treatment with the mistletoe extract than a nontumorigenic fibroblast cell line. In mistletoe-sensitive Daoy cells, reduction of proliferation and induction of caspase-mediated apoptosis were observed upon administration of 0.05 and 0.5 mg/mL abnobaVISCUM Fraxini treatment, respectively. Furthermore, mistletoe extract inhibited migration and invasion properties in Daoy and significantly impaired invasive capabilities of ONS-76 cells. CONCLUSION AbnobaVISCUM Fraxini has cell line dependent antitumoral effects in medulloblastoma models. These results call for further investigations, to reveal mechanistic insights into antitumorigenic properties of mistletoe extracts.
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Affiliation(s)
- Katrin Menke
- Department of Pediatric Oncology and Hematology, University Children's Hospital Essen, Essen, Germany
| | - Melanie Schwermer
- Department of Pediatric Oncology and Hematology, University Children's Hospital Essen, Essen, Germany.,Department of Pediatric and Adolescent Medicine, Gemeinschaftskrankenhaus Herdecke, Herdecke, Germany
| | | | - Alexander Schramm
- Medical Oncology, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Tycho Jan Zuzak
- Department of Pediatric and Adolescent Medicine, Gemeinschaftskrankenhaus Herdecke, Herdecke, Germany,
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Szurpnicka A, Kowalczuk A, Szterk A. Biological activity of mistletoe: in vitro and in vivo studies and mechanisms of action. Arch Pharm Res 2020; 43:593-629. [PMID: 32621089 PMCID: PMC7340679 DOI: 10.1007/s12272-020-01247-w] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 06/29/2020] [Indexed: 12/17/2022]
Abstract
Mistletoe has been used as treatment of many diseases in traditional and folk medicine. To date, anticancer, immunomodulatory, cardiac, antidiabetic, hepatoprotective, neuropharmacological, antibacterial and antifungal properties of mistletoe extracts have been studied the most. In this review, we summarized in vitro and in vivo studies on the pharmacological activity of Viscum species. Furthermore, we proposed the possible mechanisms of action of this herb, which might include many signalling pathways. Mistletoe could regulate either similar or different targets in various pathways that act on membrane receptors, enzymes, ion channels, transporter proteins and transcriptional targets. Still, pharmacological activities of mistletoe have been investigated mainly for crude extracts. It is a new field for scientists to determined which chemical compounds are responsible for the individual biological activities of mistletoe and how these activities are achieved. As a result, mistletoe might become a source of new complementary therapies supporting the treatment of many diseases.
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Affiliation(s)
- Anna Szurpnicka
- Department of Natural Medicinal Products and Dietary Supplements, National Medicines Institute, Chełmska 30/34, 00-725, Warsaw, Poland.
| | - Anna Kowalczuk
- National Medicines Institute, Chełmska 30/34, 00-725, Warsaw, Poland
| | - Arkadiusz Szterk
- Department of Spectrometric Methods, National Medicines Institute, Chełmska 30/34, 00-725, Warsaw, Poland
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Longhi A, Cesari M, Serra M, Mariani E. Long-Term Follow-up of a Randomized Study of Oral Etoposide versus Viscum album Fermentatum Pini as Maintenance Therapy in Osteosarcoma Patients in Complete Surgical Remission after Second Relapse. Sarcoma 2020; 2020:8260730. [PMID: 32398946 PMCID: PMC7201820 DOI: 10.1155/2020/8260730] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 03/20/2020] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND In relapsed osteosarcoma, the 5-yr postrelapse disease-free survival (PRDFS) rate after the second relapse is <20%. In June 2007, a randomized study was started comparing oral etoposide vs Viscum album fermentatum Pini (an extract derived from the parasitic plant Viscum album L., European mistletoe) as maintenance therapy in patients with metastatic osteosarcoma in complete surgical remission after the second relapse. The primary endpoint was the PRDFS rate at 12 months (compared to the historical control rate). This is a long-term updated result. Patients and Methods. 10 patients received oral etoposide 50 mg/m2 daily for 21 days every 28 days for 6 months, and 9 patients received Viscum album fermentatum Pini 3 times/wk subcutaneously for 1 year. The study closed early in July 2011 due to insufficient recruitment. Lymphocyte subpopulations were analyzed at T0, T3, T6, T9, and T12 months. RESULTS On 30 June 2019, at a median follow-up ITT of 83 months (range 3-144 ms), a median PRDFS of 106 ms (2-144) was observed in the Viscum arm with 5/9 patients who never relapse vs a PRDFS of 7 months (3-134) in the etoposide arm (all patients in the Etoposide arm relapsed) (hazard ratio HR = 0.287, 95% CI: 0.076-0.884, p=0.03). Model forecast 10-yr overall survival rates as 64% in the Viscum arm and 33% in the etoposide arm. Lymphocyte subpopulation counts (CD3, CD4, and CD56) showed an increase in the Viscum arm while a decrease was observed in the etoposide arm during treatment. CONCLUSIONS After 12 years from the start of the trial, the patients in the Viscum arm continue to show a considerably longer PRDFS compared to oral etoposide, and a trend for an advantage in OS is evident even if the number of treated patients is too small to draw conclusions. Viscum as maintenance treatment after complete surgical remission in relapsed osteosarcoma should be further investigated and compared with other drugs.
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Affiliation(s)
- Alessandra Longhi
- Chemotherapy Division, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Marilena Cesari
- Chemotherapy Division, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Massimo Serra
- Laboratory of Experimental Oncology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Erminia Mariani
- Immunoreumathology and Tissue Regeneration Laboratory, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
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Elleuch F, Baril P, Barkallah M, Perche F, Abdelkafi S, Fendri I, Pichon C. Deciphering the Biological Activities of Dunaliella sp. Aqueous Extract from Stressed Conditions on Breast Cancer: from in Vitro to in Vivo Investigations. Int J Mol Sci 2020; 21:E1719. [PMID: 32138292 PMCID: PMC7084689 DOI: 10.3390/ijms21051719] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 02/25/2020] [Accepted: 02/27/2020] [Indexed: 02/07/2023] Open
Abstract
In order to harness local resources to improve well-being and human health, we aim in this study to investigate if the microalgae Dunaliella sp. isolated from the Tunisian coastal zone possesses any anticancer activity. Dunaliella sp. was cultured under normal (DSC) or stressed (DSS) conditions and extracted using different procedures. The biological activity assessment was performed on the Triple Negative Breast Cancer (TNBC) using 4T1 murine cells as a model. Results indicate that: (i) aqueous extract was the most cytotoxic compared to ethanolic and hydroalcoholic extracts; (ii) DSS activity was superior to that of DSC. DSS extracts induced apoptosis rather than necrosis, as evidenced by DNA fragmentation, PARP-1 cleavage and caspase-3 activation. Evaluation in an orthotopic TNBC model validated the anticancer activity in vivo. Intratumoral injection of DSS extract resulted in reduced tumor growth and an enhanced immune system activation. On the transcriptional side, the expression level of the immunosuppressive enzyme Arg-1 was decreased, as well as those of NOS-2 and COX-2 genes. These results suggest a potential anticancer activity of Tunisian Dunaliella sp. deserving further attention.
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Affiliation(s)
- Fatma Elleuch
- Laboratoire de Biotechnologie Végétale Appliquée à l’Amélioration des Cultures, Faculty of Sciences of Sfax, University of Sfax, Sfax 3000, Tunisia;
- Centre de Biophysique Moléculaire (CBM), CNRS UPR 4301, 45071 Orleans, France; (P.B.); (F.P.)
| | - Patrick Baril
- Centre de Biophysique Moléculaire (CBM), CNRS UPR 4301, 45071 Orleans, France; (P.B.); (F.P.)
| | - Mohamed Barkallah
- Unité de Biotechnologie des Algues, Ecole Nationale d’Ingénieurs de Sfax, University of Sfax, Sfax 3038, Tunisia; (M.B.); (S.A.)
| | - Federico Perche
- Centre de Biophysique Moléculaire (CBM), CNRS UPR 4301, 45071 Orleans, France; (P.B.); (F.P.)
| | - Slim Abdelkafi
- Unité de Biotechnologie des Algues, Ecole Nationale d’Ingénieurs de Sfax, University of Sfax, Sfax 3038, Tunisia; (M.B.); (S.A.)
| | - Imen Fendri
- Laboratoire de Biotechnologie Végétale Appliquée à l’Amélioration des Cultures, Faculty of Sciences of Sfax, University of Sfax, Sfax 3000, Tunisia;
| | - Chantal Pichon
- Centre de Biophysique Moléculaire (CBM), CNRS UPR 4301, 45071 Orleans, France; (P.B.); (F.P.)
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Yang ZM, Yang MF, Yu W, Tao HM. Molecular mechanisms of estrogen receptor β-induced apoptosis and autophagy in tumors: implication for treating osteosarcoma. J Int Med Res 2019; 47:4644-4655. [PMID: 31526167 PMCID: PMC6833400 DOI: 10.1177/0300060519871373] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The estrogen receptors α (ERα) and β (ERβ) are located in the nucleus and bind to estrogen to initiate transcription of estrogen-responsive genes. In a variety of tumor cells, ERβ has been shown to be a tumor suppressor. In particular, ERβ has anti-proliferative effects in osteosarcoma cells. Additionally, ERβ has been proven to regulate the apoptosis-related molecules IAP, BAX, caspase-3, and PARP, and to act on the NF-κB/BCL-2 pathway to induce apoptosis in tumors. Moreover, ERβ can regulate the expression of the autophagy associated markers LC3-I/LC-3II and p62 and induce autophagy in tumors by inhibiting the PI3K/AKT/mTOR pathway and activating the AMPK pathway. Here, we review the molecular mechanisms by which ERβ induces apoptosis and autophagy in a variety of tumors to further delineate more specific molecular mechanisms underlying osteosarcoma tumorigenesis and pathogenesis. Considering the broad involvement of ERβ in apoptosis, autophagy, and their interaction, it is plausible that the critical role of ERβ in inhibiting the proliferation and metastasis of osteosarcoma cells is closely related to its regulation of apoptosis and autophagy.
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Affiliation(s)
- Zheng-Ming Yang
- Department of Orthopaedics, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Min-Fei Yang
- Department of Emergency, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Wei Yu
- Department of Orthopaedics, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hui-Min Tao
- Department of Orthopaedics, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Mistletoe-Based Drugs Work in Synergy with Radio-Chemotherapy in the Treatment of Glioma In Vitro and In Vivo in Glioblastoma Bearing Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:1376140. [PMID: 31354846 PMCID: PMC6636536 DOI: 10.1155/2019/1376140] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 06/18/2019] [Indexed: 12/16/2022]
Abstract
Background Extracts from Viscum album L. (VE) are used in the complementary cancer therapy in Europe for decades. VE contain several compounds like the mistletoe lectins (MLs) 1-3 and viscotoxins and also several minor ingredients. Since mistletoe lectin 1 (ML-1) has been described as the main component of VE harboring antitumor activity, purified native or recombinant ML-1 has been recently used in clinical trials. MLs stimulate the immune system, induce cytotoxicity, are able to modify the expression of cancer-associated genes, and influence the proliferation and motility of tumor cells. Objective In this study our goal was to determine anticancer effects of the VE ISCADOR Qu, of recombinant ML-1 (Aviscumine), and of native ML-1 in the treatment of glioblastoma (GBM), the most common and highly malignant brain tumor in adults. Additionally we were interested whether these drugs, used in combination with a temozolomide-(TMZ)-based radio-chemotherapy, provide synergistic effects. Methods Cell culture assays, ex vivo murine hippocampal brain slice cultures, human GBM cryosections, and a xenograft orthotopic glioblastoma mouse model were used. Results In cells, the expression of the ML receptor CD75s, which is also expressed in GBM specimen, but not in normal brain, correlates with the drug-induced cytotoxicity. In GBM cells, the drugs induce cell death in a concentration-dependent manner and reduce cell growth by inducing cell cycle arrest in the G2/M phase. The cell cycle arrest was paralleled by modifications in the expression of cell cycle regulating genes. ML containing drugs, if combined with glioma standard therapy, provide synergistic and additive anticancer effects. Despite not reaching statistical significance, a single intratumoral application of Aviscumine prolonged the median survival of GBM mice longer than tumor irradiation. Moreover, intratumorally applied Aviscumine prolonged the survival of GBM-bearing mice if used in combination with irradiation and TMZ for further 6.5 days compared to the radio-chemotherapy. Conclusion Our results suggest that an adjuvant treatment of glioma patients with ML-containing drugs might be beneficial.
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Zuzak TJ, Wasmuth A, Bernitzki S, Schwermer M, Längler A. Safety of high-dose intravenous mistletoe therapy in pediatric cancer patients: A case series. Complement Ther Med 2018; 40:198-202. [DOI: 10.1016/j.ctim.2018.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 12/13/2017] [Accepted: 01/04/2018] [Indexed: 10/18/2022] Open
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GADD45A and CDKN1A are involved in apoptosis and cell cycle modulatory effects of viscumTT with further inactivation of the STAT3 pathway. Sci Rep 2018; 8:5750. [PMID: 29636527 PMCID: PMC5893628 DOI: 10.1038/s41598-018-24075-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 03/21/2018] [Indexed: 12/28/2022] Open
Abstract
ViscumTT, a whole mistletoe preparation, has shown synergistic induction of apoptosis in several pediatric tumor entities. High therapeutic potential has previously been observed in Ewing's sarcoma, rhabdomyosarcoma, ALL and AML. In this study, we analyzed modulatory effects on the cell cycle by viscumTT in three osteosarcoma cell lines with various TP53 statuses. ViscumTT treatment induced G1 arrest in TP53 wild-type and null-mutant cells, but S arrest in TP53 mutant cells. Blockage of G1/S transition was accompanied by down-regulation of the key regulators CDK4, CCND1, CDK2, CCNE, CCNA. However, investigations on the transcriptional level revealed secondary TP53 participation. Cell cycle arrest was predominantly mediated by transcriptionally increased expression of GADD45A and CDKN1A and decreased SKP2 levels. Enhanced CDKN1A and GADD45A expression further played a role in viscumTT-induced apoptosis with involvement of stress-induced MAPK8 and inactivation of MAPK1/3. Furthermore, viscumTT inhibited the pro-survival pathway STAT3 by dephosphorylation of the two sites, Tyr705 and Ser727, by down-regulation of total STAT3 and its direct downstream targets BIRC5 and C-MYC. Moreover, tests of the efficacy of viscumTT in vivo showing reduction of tumor volume confirmed the high therapeutic potential as an anti-tumoral agent for osteosarcoma.
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12
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Yang M, Liu B, Jin L, Tao H, Yang Z. Estrogen receptor β exhibited anti-tumor effects on osteosarcoma cells by regulating integrin, IAP, NF-kB/BCL-2 and PI3K/Akt signal pathway. J Bone Oncol 2017; 9:15-20. [PMID: 29071206 PMCID: PMC5651467 DOI: 10.1016/j.jbo.2017.09.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 09/23/2017] [Accepted: 09/26/2017] [Indexed: 02/07/2023] Open
Abstract
This study aimed to investigate the effects of Estrogen receptor β (ERβ) on osteosarcoma cells, and explore the regulatory mechanisms involved in this process. Osteosarcoma U2-OS cells consisted four groups, and treated by E2, E2 + LY294002 (ERβ agonists), E2 + ERβ siRNA, E2 + ERβ siRNA + LY294002, respectively. Cell counting kit 8 (CCK-8) assay was performed to detect the cell viability of U2-OS cells in each group. The effects of ERβ on the migration and invasion ability of U2-OS cells were examined by wound healing assay and transwell cell culture chamber, respectively. The expression of Inhibitor of apoptosis protein (IAP) and integrin α5 in U2-OS cells of each group was detected by quantitative RT-PCR, and the expression of phosphorylated p65 (p-p65), p-AKT and Bcl-2 was detected by western blotting. The cell viability, migration and invasion ability of U2-OS cells were significantly increased by ERβ siRNA, but inhibited by ERβ agonists LY294002 (p < 0.05). ERβ siRNA significantly downregulated Integrin α5 and unregulated IAP in U2-OS cells (p < 0.05). The expression of p-p65, p-AKT and Bcl-2 was significantly reduced by LY294002, but increased by ERβ siRNA (p < 0.05). In conclusion, ERβ exhibited obvious anti-tumor effects on osteosarcoma cells by regulating integrin, IAP, NF-kBBCL-2 and PI3K/Akt signal pathway.
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Affiliation(s)
- Minfei Yang
- Emergency Department, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou, Zhejiang Province 310009, China
| | - Bing Liu
- Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou, Zhejiang Province 310009, China
| | - Libin Jin
- Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou, Zhejiang Province 310009, China
| | - Huimin Tao
- Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou, Zhejiang Province 310009, China
| | - Zhengming Yang
- Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou, Zhejiang Province 310009, China
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Synergistic Antitumour Properties of viscumTT in Alveolar Rhabdomyosarcoma. J Immunol Res 2017; 2017:4874280. [PMID: 28791312 PMCID: PMC5534308 DOI: 10.1155/2017/4874280] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 05/18/2017] [Accepted: 05/28/2017] [Indexed: 12/16/2022] Open
Abstract
Aqueous mistletoe extracts from the European mistletoe (Viscum album) contain mainly mistletoe lectins and viscotoxins as cytotoxic compounds. Lipophilic triterpene acids, which do not occur in conventional mistletoe preparations, were solubilised with β-cyclodextrins. The combination of an aqueous extract (viscum) and a triterpene-containing extract (TT) recreated a whole mistletoe extract (viscumTT). These extracts were tested on rhabdomyosarcoma in vitro, ex vivo, and in vivo with regard to anticancer effects. Viscum and viscumTT inhibited cell proliferation and induced apoptosis effectively in a dose-dependent manner in vitro and ex vivo, whereas TT showed only moderate inhibitory effects. viscumTT proved to be more effective than the single extracts and displayed a synergistic effect in vitro and a stronger effect in vivo. viscumTT induced apoptosis via the extrinsic and intrinsic pathways, evidenced by the loss of mitochondrial membrane potential and activation of CASP8 and CASP9. CASP10 inhibitor inhibited apoptosis effectively, emphasising the importance of CASP10 in viscumTT-induced apoptosis. Additionally, viscumTT changed the ratio of apoptosis-associated proteins by downregulation of antiapoptotic proteins such as XIAP and BIRC5, thus shifting the balance towards apoptosis. viscumTT effectively reduced tumour volume in patient-derived xenografts in vivo and may be considered a promising substance for rhabdomyosarcoma therapy.
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