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Chen J, Ding Z. Natural products as potential drug treatments for acute promyelocytic leukemia. Chin Med 2024; 19:57. [PMID: 38566147 PMCID: PMC10988969 DOI: 10.1186/s13020-024-00928-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024] Open
Abstract
Acute promyelocytic leukemia (APL), which was once considered one of the deadliest types of leukemia, has become a curable malignancy since the introduction of all-trans retinoic acid (ATRA) and arsenic trioxide (ATO) as clinical treatments. ATO, which has become the first-line therapeutic agent for APL, is derived from the natural mineral product arsenic, exemplifying an important role of natural products in the treatment of APL. Many other natural products, ranging from small-molecule compounds to herbal extracts, have also demonstrated great potential for the treatment and adjuvant therapy of APL. In this review, we summarize the natural products and representative components that have demonstrated biological activity for the treatment of APL. We also discuss future directions in better exploring their medicinal value, which may provide a reference for subsequent new drug development and combination therapy programs.
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Affiliation(s)
- Jiaxin Chen
- School of International Pharmaceutical Business, China Pharmaceutical University, Nanjing, China
| | - Zuoqi Ding
- School of International Pharmaceutical Business, China Pharmaceutical University, Nanjing, China.
- Editorial Board of Chinese Journal of Natural Medicines, Nanjing, China.
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2
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Shiraishi RN, Bombeiro AL, Castro TCL, Della Via FI, Santos I, Rego EM, Saad STO, Torello CO. PML/RARa leukemia induced murine model for immunotherapy evaluation. Transpl Immunol 2023; 81:101919. [PMID: 37598913 DOI: 10.1016/j.trim.2023.101919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 07/31/2023] [Accepted: 08/17/2023] [Indexed: 08/22/2023]
Abstract
Even though leukemia murine models are valuable tools for new drug therapy studies, most of these models consist of immunocompromised mice, which do not exhibit immune responses. In order to obtain an adequate leukemia model, we established an acute promyelocytic leukemia transplantation-based model (PML/RARa) in immunocompetent BALB/c mice, thus making it possible to study drug-induced cellular immune responses in leukemia. The development of PML/RARa leukemia was confirmed by leukocytosis (76.27 ± 21.8 vs. 3.40 ± 1.06; P < 0.0001), anemia (7.46 ± 1.86 vs. 15.10 ± 0.96; P < 0.0001), and thrombocytopenia (131.85 ± 39.32 vs. 839.50 ± 171.20; P < 0.0001), and the presence of blasts in the peripheral blood of mice (approximately 50% blasts; P < 0.0001), 15 days after the transplants. These findings were corroborated through differential counts, flow cytometry, and in vivo imaging, which indicated increased number of immature cells in the bone marrow (15.75 ± 3.30 vs 6.69 ± 0.55; P < 0.001), peripheral blood (7.88 ± 2.67 vs 1.22 ± 0.89; P < 0.001), and spleen (35.21 ± 4.12 vs 1.35 ± 0.86; P < 0.0001), as well as promyelocytes in the bone marrow (41.23 ± 4.80 vs 5.73 ± 1.50; P < 0.0001), peripheral blood (46.08 ± 7.52 vs 1.10 ± 0.59; P < 0.0001) and spleen (35.31 ± 8.26 vs 2.49 ± 0.29; P < 0.0001) of PML/RARa mice. Compared to basal conditions of untransplanted mice, the PML/RARa mice exhibited frequencies of T lymphocytes CD4 helper = 14.85 ± 2.91 vs 20.77 ± 2.9 in the peripheral blood (P < 0.05); 12.75 ± 1.33 vs 45.90 ± 2.02 in the spleen (P < 0.0001); CD8 cytotoxic = 11.27 ± 3.44 vs 11.05 ± 1.22 in the peripheral blood (P > 0.05); 10.48 ± 1.16 vs 30.02 ± 1.80 in the spleen (P < 0.0001); natural killer (NK) cells = 3.68 ± 1.35 vs 6.84 ± 0.52 in the peripheral blood (P < 0.001); 4.43 ± 0.57 vs 6.40 ± 1.14 in the spleen (P < 0.05); B cells 2.50 ± 0.60 vs 15.20 ± 5.34 in the peripheral blood (P < 0.001); 17.77 ± 4.39 vs 46.90 ± 5.92 in the spleen (P < 0.0001); neutrophils = 5.97% ± 1.88 vs 31.57 ± 9.14 (P < 0.0001); and monocytes = 6.45 ± 2.97 vs 15.85 ± 2.57 (P < 0.001), selected as classical (3.33 ± 3.40 vs 57.80 ± 16.51, P < 0.0001), intermediate (57.42 ± 10.61 vs 21.75 ± 5.90, P < 0.0001), and non-classical monocytes (37.51 ± 10.85 vs 18.08 ± 7.13, P < 0.05) in the peripheral blood; and as classically activated (M1) within in the bone marrow (3.70 ± 0.94 vs 1.88 ± 0.39, P < 0.05) and spleen 15.19 ± 3.32 vs 9.47 ± 1.61, P < 0.05), in addition to alternatively activated (M2) macrophages within the bone marrow (23.06 ± 5.25 vs 1.76 ± 0.74, P < 0.0001) and spleen (46.51 ± 11.18 vs 30.58 ± 2.64, P < 0.05) compartments. All-trans retinoic acid (ATRA) treatment of PML/RARa mice reduced blast (immature cells) in the bone marrow (8.62 ± 1.81 vs 15.76 ± 1.25; P < 0.05) and spleen (8.75 ± 1.31 vs 35.21 ± 1.55; P < 0.0001) with no changes in the peripheral blood (10.13 ± 3.33 vs 7.88 ± 1.01; P > 0.05), as well as reduced promyelocytes in the bone marrow (19.79 ± 4.84 vs 41.23 ± 1.81; P < 0.05), peripheral blood (31.65 ± 3.92 vs 46.09 ± 2.84; P < 0.05) and spleen (24.84 ± 2.03 vs 41.46 ± 2.39; P < 0.001), and increased neutrophils of the peripheral blood (35.48 ± 7.24 vs 7.83 ± 1.40; P < 0.05) which was corroborated by reducing of immature cells and increase of neutrophil in the stained smears from PML/RARa mice, thus confirming that this model can be used in drug development studies. Our results show the effective induction of PML/RARa leukemia in BALB/c mice, thus producing a low-priced and reliable tool for investigating cellular immune responses in leukemia.
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Affiliation(s)
- Rodrigo N Shiraishi
- Hematology and Transfusion Medicine Center - Hemocentro, University of Campinas, 13083-878 Campinas, São Paulo, Brazil
| | - André L Bombeiro
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas, 13083-862 Campinas, São Paulo, Brazil
| | - Tamara C L Castro
- Department of Pharmacology, School of Medical Sciences, University of Campinas, 13083-887 Campinas, São Paulo, Brazil
| | - Fernanda I Della Via
- Hematology and Transfusion Medicine Center - Hemocentro, University of Campinas, 13083-878 Campinas, São Paulo, Brazil
| | - Irene Santos
- Hematology and Transfusion Medicine Center - Hemocentro, University of Campinas, 13083-878 Campinas, São Paulo, Brazil
| | - Eduardo M Rego
- Hematology and Clinical Oncology Divisions, Department of Internal Medicine, University of São Paulo, 14048-900 Ribeirão Preto, São Paulo, Brazil
| | - Sara T O Saad
- Hematology and Transfusion Medicine Center - Hemocentro, University of Campinas, 13083-878 Campinas, São Paulo, Brazil.
| | - Cristiane O Torello
- Hematology and Transfusion Medicine Center - Hemocentro, University of Campinas, 13083-878 Campinas, São Paulo, Brazil.
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3
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Della Via FI, Alvarez MC, Basting RT, Saad STO. The Effects of Green Tea Catechins in Hematological Malignancies. Pharmaceuticals (Basel) 2023; 16:1021. [PMID: 37513933 PMCID: PMC10385775 DOI: 10.3390/ph16071021] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/10/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
Green tea catechins are bioactive polyphenol compounds which have attracted significant attention for their diverse biological activities and potential health benefits. Notably, epigallocatechin-3-gallate (EGCG) has emerged as a potent apoptosis inducer through mechanisms involving caspase activation, modulation of Bcl-2 family proteins, disruption of survival signaling pathways and by regulating the redox balance, inducing oxidative stress. Furthermore, emerging evidence suggests that green tea catechins can modulate epigenetic alterations, including DNA methylation and histone modifications. In addition to their apoptotic actions, ROS signaling effects and reversal of epigenetic alterations, green tea catechins have shown promising results in promoting the differentiation of leukemia cells. This review highlights the comprehensive actions of green tea catechins and provides valuable insights from clinical trials investigating the therapeutic potential of green tea catechins in leukemia treatment. Understanding these multifaceted mechanisms and the outcomes of clinical trials may pave the way for the development of innovative strategies and the integration of green tea catechins into clinical practice for improving leukemia patient outcomes.
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Affiliation(s)
- Fernanda Isabel Della Via
- Hematology and Transfusion Medicine Center, University of Campinas/Hemocentro, UNICAMP, Rua Carlos Chagas 480, Campinas 13083-878, SP, Brazil
| | - Marisa Claudia Alvarez
- Hematology and Transfusion Medicine Center, University of Campinas/Hemocentro, UNICAMP, Rua Carlos Chagas 480, Campinas 13083-878, SP, Brazil
| | - Rosanna Tarkany Basting
- Hematology and Transfusion Medicine Center, University of Campinas/Hemocentro, UNICAMP, Rua Carlos Chagas 480, Campinas 13083-878, SP, Brazil
| | - Sara Teresinha Olalla Saad
- Hematology and Transfusion Medicine Center, University of Campinas/Hemocentro, UNICAMP, Rua Carlos Chagas 480, Campinas 13083-878, SP, Brazil
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Iweala EJ, Oluwapelumi AE, Dania OE, Ugbogu EA. Bioactive Phytoconstituents and Their Therapeutic Potentials in the Treatment of Haematological Cancers: A Review. Life (Basel) 2023; 13:1422. [PMID: 37511797 PMCID: PMC10381774 DOI: 10.3390/life13071422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/12/2023] [Accepted: 02/15/2023] [Indexed: 07/30/2023] Open
Abstract
Haematological (blood) cancers are the cancers of the blood and lymphoid forming tissues which represents approximately 10% of all cancers. It has been reported that approximately 60% of all blood cancers are incurable. Despite substantial improvement in access to detection/diagnosis, chemotherapy and bone marrow transplantation, there is still high recurrence and unpredictable but clearly defined relapses indicating that effective therapies are still lacking. Over the past two decades, medicinal plants and their biologically active compounds are being used as potential remedies and alternative therapies for the treatment of cancer. This is due to their anti-oxidant, anti-inflammatory, anti-mutagenic, anti-angiogenic, anti-cancer activities and negligible side effects. These bioactive compounds have the capacity to reduce proliferation of haematological cancers via various mechanisms such as promoting apoptosis, transcription regulation, inhibition of signalling pathways, downregulating receptors and blocking cell cycle. This review study highlights the mechanistic and beneficial effects of nine bioactive compounds (quercetin, ursolic acid, fisetin, resveratrol, epigallocatechin gallate, curcumin, gambogic acid, butein and celastrol) as potential remedies for chemoprevention of haematological cancers. The study provides useful insights on the effectiveness of the use of bioactive compounds from plants for chemoprevention of haematological cancers.
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Affiliation(s)
- Emeka J Iweala
- Department of Biochemistry, College of Science and Technology, Covenant University, Ota PMB 1023, Ogun State, Nigeria
- Covenant Applied Informatics and Communication African Centre of Excellence (CApIC-ACE), Covenant University, Ota PMB 1023, Ogun State, Nigeria
| | - Adurosakin E Oluwapelumi
- Department of Microbiology, Ladoke Akintola University of Technology, Ogbomoso PMB 4000, Oyo State, Nigeria
| | - Omoremime E Dania
- Department of Biochemistry, College of Science and Technology, Covenant University, Ota PMB 1023, Ogun State, Nigeria
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Chimento A, D’Amico M, De Luca A, Conforti FL, Pezzi V, De Amicis F. Resveratrol, Epigallocatechin Gallate and Curcumin for Cancer Therapy: Challenges from Their Pro-Apoptotic Properties. Life (Basel) 2023; 13:life13020261. [PMID: 36836619 PMCID: PMC9962739 DOI: 10.3390/life13020261] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/20/2023] Open
Abstract
Plant-derived bioactive compounds are gaining wide attention for their multiple health-promoting activities and in particular for their anti-cancer properties. Several studies have highlighted how they can prevent cancer initiation and progression, improve the effectiveness of chemotherapy, and, in some cases, limit some of the side effects of chemotherapy agents. In this paper, we provide an update of the literature on the anti-cancer effects of three extensively studied plant-derived compounds, namely resveratrol, epigallocatechin gallate, and curcumin, with a special focus on the anti-cancer molecular mechanisms inducing apoptosis in the major types of cancers globally.
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Affiliation(s)
- Adele Chimento
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy
| | - Maria D’Amico
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy
- Health Center, University of Calabria, 87036 Rende, Italy
| | - Arianna De Luca
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy
| | - Francesca Luisa Conforti
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy
- Health Center, University of Calabria, 87036 Rende, Italy
| | - Vincenzo Pezzi
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy
| | - Francesca De Amicis
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy
- Health Center, University of Calabria, 87036 Rende, Italy
- Correspondence: ; Tel.: +39-0984-496204
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Novel inhibitor of hematopoietic cell kinase as a potential therapeutic agent for acute myeloid leukemia. Cancer Immunol Immunother 2022; 71:1909-1921. [DOI: 10.1007/s00262-021-03111-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 11/10/2021] [Indexed: 10/19/2022]
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The effects of Epigallocatechin-3-gallate and Dabrafenib combination on apoptosis and the genes involved in epigenetic events in anaplastic thyroid cancer cells. Med Oncol 2022; 39:98. [DOI: 10.1007/s12032-022-01688-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/17/2022] [Indexed: 11/27/2022]
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8
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Azambuja JH, Mancuso RI, Via FID, Torello CO, Saad STO. Protective effect of green tea and epigallocatechin-3-gallate in a LPS-induced systemic inflammation model. J Nutr Biochem 2021; 101:108920. [PMID: 34875388 DOI: 10.1016/j.jnutbio.2021.108920] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 09/29/2021] [Accepted: 11/12/2021] [Indexed: 12/19/2022]
Abstract
Inflammation causes severe dysregulation of organ functions, via the development of oxidative stress and inflammation damage. Polyphenol compounds found in green tea (GTE), including the most important component epigallocatechin-3-gallate (EGCG), have a great therapeutic potential. Here, protective properties of GTE and EGCG against lipopolysaccharide (LPS)-induced inflammation are explored. To this end, the effects of GTE and EGCG were studied on LPS challenged macrophages. Mice received GTE (250 mg/kg/d/p.o) or EGCG (25 mg/kg/d/i.p.) for 7 d, before the inflammation shock was provoked with a single intraperitoneal injection of LPS. The frequencies of lymphocytes CD4+, CD8+, NK1-1+ and CD4+CD25highFOXP3+ (Treg), macrophages CD11b+F480+, monocytes CD11b+Ly6Clow/high, neutrophils CD11b+Ly6G+, MDSCs CD11b+Gr-1high, M2/N2-like phenotype CD206+ and M1-like phenotype CD86+ in spleen, bone marrow and peripheral blood were determined. In vitro studies revealed that GTE and EGCG significantly attenuated LPS-induced CD80 expression and increased the CD163 expression, showing a potential to reduce the macrophage inflammatory phenotype. In vivo, GTE and EGCG inhibited the inflammation, mainly by reducing M1-macrophages and increasing Treg cells in the bone marrow. In addition, GTE and EGCG increase M2-macrophages, N2-neutrophils and Tregs in the spleen and blood and block the migration of monocytes from the bone marrow to the peripheral blood. These findings indicate that EGCG and GTE prevent LPS-induced inflammatory damage contributing to restoring the immune system homeostasis.
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Affiliation(s)
| | - Rubia Isler Mancuso
- Hematology and Transfusion Medicine Center, University of Campinas, Campinas, São Paulo, Brazil
| | | | - Cristiane Okuda Torello
- Hematology and Transfusion Medicine Center, University of Campinas, Campinas, São Paulo, Brazil
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Mancuso RI, Azambuja JH, Niemann FS, Congrains A, Foglio MA, Rego EM, Olalla Saad ST. Artemisinins induce endoplasmic reticulum stress in acute leukaemia cells in vitro and in vivo. EJHAEM 2021; 2:818-822. [PMID: 35845184 PMCID: PMC9175883 DOI: 10.1002/jha2.314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 09/13/2021] [Accepted: 09/24/2021] [Indexed: 11/11/2022]
Abstract
Loss of endoplasmic reticulum (ER) homeostasis leads to ER stress, thus prolonged activation can lead to apoptosis. Herein, artesunate (ART) induced ER stress in leukaemia cells, resulting in eIF2α phosphorylation, activation of transcription factor 4, subsequent CHOP upregulation and XBP1 splicing. Furthermore, in vitro cyclin/CDKs reduction induced G1‐phase arrest. An in vivo xenograft model showed a consistent pattern of ART in reducing tumour burden, supporting roles in the UPR pathway, which we speculate could lead to apoptosis by NOXA activation. Moreover, ART were capable of increasing the survival of mice. Taken together, our data indicate that ART may represent an interesting weapon to fight leukaemia.
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Affiliation(s)
- Rubia Isler Mancuso
- Haematology and Transfusion Medicine Center University of Campinas Campinas Brazil
| | | | | | - Ada Congrains
- Haematology and Transfusion Medicine Center University of Campinas Campinas Brazil
| | - Mary Ann Foglio
- Faculty of Pharmaceutical Science University of Campinas Campinas Brazil
| | - Eduardo Magalhães Rego
- Center for Cell Based Therapy University of São Paulo Ribeirão Preto Brazil
- Haematology Division, LIM31, Faculdade de Medicina University of São Paulo São Paulo Brazil
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Kamal DAM, Salamt N, Zaid SSM, Mokhtar MH. Beneficial Effects of Green Tea Catechins on Female Reproductive Disorders: A Review. Molecules 2021; 26:molecules26092675. [PMID: 34063635 PMCID: PMC8124874 DOI: 10.3390/molecules26092675] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 04/30/2021] [Accepted: 05/02/2021] [Indexed: 12/20/2022] Open
Abstract
Tea is one of the most widely consumed beverages worldwide after water, and green tea accounts for 20% of the total tea consumption. The health benefits of green tea are attributed to its natural antioxidants, namely, catechins, which are phenolic compounds with diverse beneficial effects on human health. The beneficial effects of green tea and its major bioactive component, (-)-epigallocatechin-3-gallate (EGCG), on health include high antioxidative, osteoprotective, neuroprotective, anti-cancer, anti-hyperlipidemia and anti-diabetic effects. However, the review of green tea's benefits on female reproductive disorders, including polycystic ovary syndrome (PCOS), endometriosis and dysmenorrhea, remains scarce. Thus, this review summarises current knowledge on the beneficial effects of green tea catechins on selected female reproductive disorders. Green tea or its derivative, EGCG, improves endometriosis mainly through anti-angiogenic, anti-fibrotic, anti-proliferative and proapoptotic mechanisms. Moreover, green tea enhances ovulation and reduces cyst formation in PCOS while improving generalised hyperalgesia, and reduces plasma corticosterone levels and uterine contractility in dysmenorrhea. However, information on clinical trials is inadequate for translating excellent findings on green tea benefits in animal endometriosis models. Thus, future clinical intervention studies are needed to provide clear evidence of the green tea benefits with regard to these diseases.
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Affiliation(s)
- Datu Agasi Mohd Kamal
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia; (D.A.M.K.); (N.S.)
- Department of Biomedical Sciences and Therapeutics, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
| | - Norizam Salamt
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia; (D.A.M.K.); (N.S.)
| | - Siti Sarah Mohamad Zaid
- Department of Environment, Faculty of Forestry and Environment, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Mohd Helmy Mokhtar
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia; (D.A.M.K.); (N.S.)
- Correspondence: ; Tel.: +603-91458619
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Della Via FI, Shiraishi RN, Santos I, Ferro KP, Salazar-Terreros MJ, Franchi Junior GC, Rego EM, Saad STO, Torello CO. (-)-Epigallocatechin-3-gallate induces apoptosis and differentiation in leukaemia by targeting reactive oxygen species and PIN1. Sci Rep 2021; 11:9103. [PMID: 33907248 PMCID: PMC8079435 DOI: 10.1038/s41598-021-88478-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 03/01/2021] [Indexed: 02/02/2023] Open
Abstract
(-)-Epigallocatechin-3-gallate (EGCG), the major active polyphenol extracted from green tea, has been shown to induce apoptosis and inhibit cell proliferation, cell invasion, angiogenesis and metastasis. Herein, we evaluated the in vivo effects of EGCG in acute myeloid leukaemia (AML) using an acute promyelocytic leukaemia (APL) experimental model (PML/RARα). Haematological analysis revealed that EGCG treatment reversed leucocytosis, anaemia and thrombocytopenia, and prolonged survival of PML/RARα mice. Notably, EGCG reduced leukaemia immature cells and promyelocytes in the bone marrow while increasing mature myeloid cells, possibly due to apoptosis increase and cell differentiation. The reduction of promyelocytes and neutrophils/monocytes increase detected in the peripheral blood, in addition to the increased percentage of bone marrow cells with aggregated promyelocytic leukaemia (PML) bodies staining and decreased expression of PML-RAR oncoprotein corroborates our results. In addition, EGCG increased expression of neutrophil differentiation markers such as CD11b, CD14, CD15 and CD66 in NB4 cells; and the combination of all-trans retinoic acid (ATRA) plus EGCG yield higher increase the expression of CD15 marker. These findings could be explained by a decrease of peptidyl-prolyl isomerase NIMA-interacting 1 (PIN1) expression and reactive oxygen species (ROS) increase. EGCG also decreased expression of substrate oncoproteins for PIN1 (including cyclin D1, NF-κB p65, c-MYC, and AKT) and 67 kDa laminin receptor (67LR) in the bone marrow cells. Moreover, EGCG showed inhibition of ROS production in NB4 cells in the presence of N-acetyl-L-cysteine (NAC), as well as a partial blockage of neutrophil differentiation and apoptosis, indicating that EGCG-activities involve/or are in response of oxidative stress. Furthermore, apoptosis of spleen cells was supported by increasing expression of BAD and BAX, parallel to BCL-2 and c-MYC decrease. The reduction of spleen weights of PML/RARα mice, as well as apoptosis induced by EGCG in NB4 cells in a dose-dependent manner confirms this assumption. Our results support further evaluation of EGCG in clinical trials for AML, since EGCG could represent a promising option for AML patient ineligible for current mainstay treatments.
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Affiliation(s)
- Fernanda Isabel Della Via
- grid.411087.b0000 0001 0723 2494Haematology and Transfusion Medicine Centre – Hemocentro, University of Campinas, Campinas, 13083-878 Brazil
| | - Rodrigo Naoto Shiraishi
- grid.411087.b0000 0001 0723 2494Haematology and Transfusion Medicine Centre – Hemocentro, University of Campinas, Campinas, 13083-878 Brazil
| | - Irene Santos
- grid.411087.b0000 0001 0723 2494Haematology and Transfusion Medicine Centre – Hemocentro, University of Campinas, Campinas, 13083-878 Brazil
| | - Karla Priscila Ferro
- grid.411087.b0000 0001 0723 2494Haematology and Transfusion Medicine Centre – Hemocentro, University of Campinas, Campinas, 13083-878 Brazil
| | - Myriam Janeth Salazar-Terreros
- grid.411087.b0000 0001 0723 2494Haematology and Transfusion Medicine Centre – Hemocentro, University of Campinas, Campinas, 13083-878 Brazil
| | - Gilberto Carlos Franchi Junior
- grid.411087.b0000 0001 0723 2494Onco-Haematological Child Centre, Faculty of Medical Sciences, University of Campinas, Campinas, 13083-970 Brazil
| | - Eduardo Magalhães Rego
- grid.11899.380000 0004 1937 0722Haematology and Clinical Oncology Division, Department of Internal Medicine, University of São Paulo, Ribeirão Preto, 14048-900 Brazil
| | - Sara Teresinha Olalla Saad
- grid.411087.b0000 0001 0723 2494Haematology and Transfusion Medicine Centre – Hemocentro, University of Campinas, Campinas, 13083-878 Brazil
| | - Cristiane Okuda Torello
- grid.411087.b0000 0001 0723 2494Haematology and Transfusion Medicine Centre – Hemocentro, University of Campinas, Campinas, 13083-878 Brazil
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Calgarotto AK, Longhini AL, Pericole de Souza FV, Duarte ASS, Ferro KP, Santos I, Maso V, Olalla Saad ST, Torello CO. Immunomodulatory Effect of Green Tea Treatment in Combination with Low-dose Chemotherapy in Elderly Acute Myeloid Leukemia Patients with Myelodysplasia-related Changes. Integr Cancer Ther 2021; 20:15347354211002647. [PMID: 33754891 PMCID: PMC7995304 DOI: 10.1177/15347354211002647] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Green tea (GT) treatment was evaluated for its effect on the immune and antineoplastic response of elderly acute myeloid leukemia patients with myelodysplasia-related changes (AML-MRC) who are ineligible for aggressive chemotherapy and bone marrow transplants. The eligible patients enrolled in the study (n = 10) received oral doses of GT extract (1000 mg/day) alone or combined with low-dose cytarabine chemotherapy for at least 6 months and/or until progression. Bone marrow (BM) and peripheral blood (PB) were evaluated monthly. Median survival was increased as compared to the control cohort, though not statistically different. Interestingly, improvements in the immunological profile of patients were found. After 30 days, an activated and cytotoxic phenotype was detected: GT increased total and naïve/effector CD8+ T cells, perforin+/granzyme B+ natural killer cells, monocytes, and classical monocytes with increased reactive oxygen species (ROS) production. A reduction in the immunosuppressive profile was also observed: GT reduced TGF-β and IL-4 expression, and decreased regulatory T cell and CXCR4+ regulatory T cell frequencies. ROS levels and CXCR4 expression were reduced in bone marrow CD34+ cells, as well as nuclear factor erythroid 2–related factor 2 (NRF2) and hypoxia-inducible factor 1α (HIF-1α) expression in biopsies. Immune modulation induced by GT appears to occur, regardless of tumor burden, as soon as 30 days after intake and is maintained for up to 180 days, even in the presence of low-dose chemotherapy. This pilot study highlights that GT extracts are safe and could improve the immune system of elderly AML-MRC patients.
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Affiliation(s)
| | | | | | | | | | - Irene Santos
- University of Campinas, Campinas, São Paulo, Brazil
| | - Victor Maso
- University of Campinas, Campinas, São Paulo, Brazil
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Alaswad HA, Mahbub AA, Le Maitre CL, Jordan-Mahy N. Molecular Action of Polyphenols in Leukaemia and Their Therapeutic Potential. Int J Mol Sci 2021; 22:ijms22063085. [PMID: 33802972 PMCID: PMC8002821 DOI: 10.3390/ijms22063085] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/08/2021] [Accepted: 03/10/2021] [Indexed: 02/07/2023] Open
Abstract
Leukaemia is a malignant disease of the blood. Current treatments for leukaemia are associated with serious side-effects. Plant-derived polyphenols have been identified as potent anti-cancer agents and have been shown to work synergistically with standard chemotherapy agents in leukaemia cell lines. Polyphenols have multiple mechanisms of action and have been reported to decrease cell proliferation, arrest cell cycle and induce apoptosis via the activation of caspase (3, 8 and 9); the loss of mitochondrial membrane potential and the release of cytochrome c. Polyphenols have been shown to suppress activation of transcription factors, including NF-kB and STAT3. Furthermore, polyphenols have pro-oxidant properties, with increasing evidence that polyphenols inhibit the antioxidant activity of glutathione, causing oxidative DNA damage. Polyphenols also induce autophagy-driven cancer cell death and regulate multidrug resistance proteins, and thus may be able to reverse resistance to chemotherapy agents. This review examines the molecular mechanism of action of polyphenols and discusses their potential therapeutic targets. Here, we discuss the pharmacological properties of polyphenols, including their anti-inflammatory, antioxidant, anti-proliferative, and anti-tumour activities, and suggest that polyphenols are potent natural agents that can be useful therapeutically; and discuss why data on bioavailability, toxicity and metabolism are essential to evaluate their clinical use.
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Affiliation(s)
- Hamza A. Alaswad
- Biomolecular Sciences Research Centre, Department of Biosciences and Chemistry, Sheffield Hallam University, The Owen Building, City Campus, Howard Street, Sheffield S1 1WB, UK; (H.A.A.); (C.L.L.M.)
| | - Amani A. Mahbub
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, P.O. Box 715, Makkah 21955, Saudi Arabia;
| | - Christine L. Le Maitre
- Biomolecular Sciences Research Centre, Department of Biosciences and Chemistry, Sheffield Hallam University, The Owen Building, City Campus, Howard Street, Sheffield S1 1WB, UK; (H.A.A.); (C.L.L.M.)
| | - Nicola Jordan-Mahy
- Biomolecular Sciences Research Centre, Department of Biosciences and Chemistry, Sheffield Hallam University, The Owen Building, City Campus, Howard Street, Sheffield S1 1WB, UK; (H.A.A.); (C.L.L.M.)
- Correspondence: ; Tel.: +44-0114-225-3120
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Mancuso RI, Foglio MA, Olalla Saad ST. Artemisinin-type drugs for the treatment of hematological malignancies. Cancer Chemother Pharmacol 2020; 87:1-22. [PMID: 33141328 DOI: 10.1007/s00280-020-04170-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 10/06/2020] [Indexed: 12/19/2022]
Abstract
Qinghaosu, known as artemisinin (ARS), has been for over two millennia, one of the most common herbs prescribed in traditional Chinese medicine (TCM). ARS was developed as an antimalarial drug and currently belongs to the established standard treatments of malaria as a combination therapy worldwide. In addition to the antimalarial bioactivity of ARS, anticancer activities have been shown both in vitro and in vivo. Like other natural products, ARS acts in a multi-specific manner also against hematological malignancies. The chemical structure of ARS is a sesquiterpene lactone, which contains an endoperoxide bridge essential for activity. The main mechanism of action of ARS and its derivatives (artesunate, dihydroartemisinin, artemether) toward leukemia, multiple myeloma, and lymphoma cells comprises oxidative stress response, inhibition of proliferation, induction of various types of cell death as apoptosis, autophagy, ferroptosis, inhibition of angiogenesis, and signal transducers, as NF-κB, MYC, amongst others. Therefore, new pharmaceutically active compounds, dimers, trimers, and hybrid molecules, could enhance the existing therapeutic alternatives in combating hematologic malignancies. Owing to the high potency and good tolerance without side effects of ARS-type drugs, combination therapies with standard chemotherapies could be applied in the future after further clinical trials in hematological malignancies.
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Affiliation(s)
- R I Mancuso
- Hematology and Hemotherapy Center, University of Campinas, HEMOCENTRO UNICAMP, Campinas, São Paulo, Brazil
| | - M A Foglio
- Faculty of Pharmaceutical Science, University of Campinas-UNICAMP, Campinas, São Paulo, Brazil
| | - S T Olalla Saad
- Hematology and Hemotherapy Center, University of Campinas, HEMOCENTRO UNICAMP, Campinas, São Paulo, Brazil.
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Tang GY, Meng X, Gan RY, Zhao CN, Liu Q, Feng YB, Li S, Wei XL, Atanasov AG, Corke H, Li HB. Health Functions and Related Molecular Mechanisms of Tea Components: An Update Review. Int J Mol Sci 2019; 20:E6196. [PMID: 31817990 PMCID: PMC6941079 DOI: 10.3390/ijms20246196] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 12/02/2019] [Accepted: 12/06/2019] [Indexed: 02/07/2023] Open
Abstract
Tea is widely consumed all over the world. Generally, tea is divided into six categories: White, green, yellow, oolong, black, and dark teas, based on the fermentation degree. Tea contains abundant phytochemicals, such as polyphenols, pigments, polysaccharides, alkaloids, free amino acids, and saponins. However, the bioavailability of tea phytochemicals is relatively low. Thus, some novel technologies like nanotechnology have been developed to improve the bioavailability of tea bioactive components and consequently enhance the bioactivity. So far, many studies have demonstrated that tea shows various health functions, such as antioxidant, anti-inflammatory, immuno-regulatory, anticancer, cardiovascular-protective, anti-diabetic, anti-obesity, and hepato-protective effects. Moreover, it is also considered that drinking tea is safe to humans, since reports about the severe adverse effects of tea consumption are rare. In order to provide a better understanding of tea and its health potential, this review summarizes and discusses recent literature on the bioactive components, bioavailability, health functions, and safety issues of tea, with special attention paid to the related molecular mechanisms of tea health functions.
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Affiliation(s)
- Guo-Yi Tang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (G.-Y.T.); (X.M.); (C.-N.Z.); (Q.L.)
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, No. 10 Sassoon Road, Pokfulam, Hong Kong 999077, China; (Y.-B.F.); (S.L.)
| | - Xiao Meng
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (G.-Y.T.); (X.M.); (C.-N.Z.); (Q.L.)
| | - Ren-You Gan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (X.-L.W.); (H.C.)
- Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China
| | - Cai-Ning Zhao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (G.-Y.T.); (X.M.); (C.-N.Z.); (Q.L.)
| | - Qing Liu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (G.-Y.T.); (X.M.); (C.-N.Z.); (Q.L.)
| | - Yi-Bin Feng
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, No. 10 Sassoon Road, Pokfulam, Hong Kong 999077, China; (Y.-B.F.); (S.L.)
| | - Sha Li
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, No. 10 Sassoon Road, Pokfulam, Hong Kong 999077, China; (Y.-B.F.); (S.L.)
| | - Xin-Lin Wei
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (X.-L.W.); (H.C.)
| | - Atanas G. Atanasov
- The Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Magdalenka, Poland;
| | - Harold Corke
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (X.-L.W.); (H.C.)
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (G.-Y.T.); (X.M.); (C.-N.Z.); (Q.L.)
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Tang GY, Zhao CN, Xu XY, Gan RY, Cao SY, Liu Q, Shang A, Mao QQ, Li HB. Phytochemical Composition and Antioxidant Capacity of 30 Chinese Teas. Antioxidants (Basel) 2019; 8:E180. [PMID: 31216700 PMCID: PMC6617242 DOI: 10.3390/antiox8060180] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 12/13/2022] Open
Abstract
Tea has been reported to prevent and manage many chronic diseases, such as cancer, diabetes, obesity, and cardiovascular diseases, and the antioxidant capacity of tea may be responsible for these health benefits. In this study, the antioxidant capacities of fat-soluble, water-soluble, and bound-insoluble fractions of 30 Chinese teas belonging to six categories, namely green, black, oolong, dark, white, and yellow teas, were systematically evaluated, applying ferric-reducing antioxidant power and Trolox equivalent antioxidant capacity assays. In addition, total phenolic contents of teas were determined by Folin-Ciocalteu method, and the contents of 18 main phytochemical compounds in teas were measured by high-performance liquid chromatography (HPLC). The results found that several teas possessed very strong antioxidant capacity, and caffeine, theaflavine, gallic acid, chlorogenic acid, ellagic acid, and kaempferol-3-O-glucoside, as well as eight catechins, were the main antioxidant compounds in them. Thus, these teas could be good natural sources of dietary antioxidants, and their extracts might be developed as food additives, nutraceuticals, cosmetics, and pharmaceuticals.
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Affiliation(s)
- Guo-Yi Tang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Cai-Ning Zhao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Xiao-Yu Xu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Ren-You Gan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Shi-Yu Cao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Qing Liu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Ao Shang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Qian-Qian Mao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
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17
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Wu D, Liu Z, Li J, Zhang Q, Zhong P, Teng T, Chen M, Xie Z, Ji A, Li Y. Epigallocatechin-3-gallate inhibits the growth and increases the apoptosis of human thyroid carcinoma cells through suppression of EGFR/RAS/RAF/MEK/ERK signaling pathway. Cancer Cell Int 2019; 19:43. [PMID: 30858760 PMCID: PMC6394055 DOI: 10.1186/s12935-019-0762-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 02/18/2019] [Indexed: 12/12/2022] Open
Abstract
Background Thyroid cancer is the most common type of endocrine malignancy and the incidence rate is rapidly increasing worldwide. Epigallocatechin-3-gallate (EGCG) could suppress cancer growth and induce apoptosis in many types of cancer cells. However, the mechanism of action of EGCG on the growth of human thyroid carcinoma cells has not been fully illuminated. Methods Cell proliferation and viability were detected by EdU and MTS assays. Cell cycle distribution was measured by flow cytometry. Migration and invasion were evaluated by scratch and transwell assays. Apoptotic levels were detected by TUNEL staining and western blotting. The protein levels of EGFR/RAS/RAF/MEK/ERK signaling pathway were detected by western blotting. The in vivo results were determined by tumor xenografts in nude mice. The in vivo proliferation, tumor microvessel density, and apoptosis were detected by immunohistochemistry. Results EGCG inhibited the proliferation, viability, and cell cycle progression in human thyroid carcinoma cells. EGCG decreased the migration and invasion, but increased the apoptosis of human thyroid carcinoma cells. EGCG reduced the protein levels of phospho (p)-epidermal growth factor receptor (EGFR), H-RAS, p-RAF, p-MEK1/2, and p-extracellular signal-regulated protein kinase 1/2 (ERK1/2) in human thyroid carcinoma cells. EGCG inhibited the growth of human thyroid carcinoma xenografts by inducing apoptosis and down-regulating angiogenesis. Conclusions EGCG could reduce the growth and increase the apoptosis of human thyroid carcinoma cells through suppressing the EGFR/RAS/RAF/MEK/ERK signaling pathway. EGCG can be developed as an effective therapeutic agent for the treatment of thyroid cancer.
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Affiliation(s)
- Dongdong Wu
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Zhengguo Liu
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Jianmei Li
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Qianqian Zhang
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Peiyu Zhong
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Tieshan Teng
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Mingliang Chen
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Zhongwen Xie
- 2State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036 Anhui China
| | - Ailing Ji
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Yanzhang Li
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
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18
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Antitumor activities of Quercetin and Green Tea in xenografts of human leukemia HL60 cells. Sci Rep 2018; 8:3459. [PMID: 29472583 PMCID: PMC5823936 DOI: 10.1038/s41598-018-21516-5] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 02/06/2018] [Indexed: 11/25/2022] Open
Abstract
Quercetin is one of the most abundant flavonoids, present in fruits and vegetables and has been shown to have multiple properties capable of reducing cell growth in cancer cells. Green tea is a widely consumed beverage, known for a potential source of free radical scavenging and anti-cancer activities. Herein, we investigate the in vivo antitumor efficacy of quercetin and green tea in human leukemia. Human tumors were xenografted into NOD/SCID mice. Quercetin and green tea reduced tumor growth in HL-60 xenografts accompanied by decreased expression of anti-apoptotic proteins, BCL-2, BCL-XL and MCL-1 and increased expression of BAX, a pro-apoptotic protein. Moreover, caspase-3 was activated to a greater extent after quercetin and green tea treatment. Quercetin and green tea also mediated G1 phase cell cycle arrest in HL-60 xenografts. Treatment with quercetin and green tea induced conversion of LC3-I to LC3-II as well as activation of autophagy proteins, suggesting that quercetin and green tea initiate the autophagic progression. We have provided evidence that quercetin and green tea induces signaling at the level of apoptosis, cell cycle and autophagy which converge to antigrowth effects in HL-60 xenograft mice suggesting that these compounds may be a compelling ally in cancer treatment.
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