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Ribeiro AF, Santos JF, Mattos RR, Barros EGO, Nasciutti LE, Cabral LM, Sousa VPDE. Characterization and in vitro antitumor activity of polymeric nanoparticles loaded with Uncaria tomentosa extract. AN ACAD BRAS CIENC 2020; 92:e20190336. [PMID: 32321026 DOI: 10.1590/0001-3765202020190336] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 08/05/2019] [Indexed: 11/22/2022] Open
Abstract
Uncaria tomentosa (UT) extracts have been shown to have promising anti-tumor activity. We hypothesized that its incorporation into nanostructured systems could improve the anticancer properties. Here, poly-e-caprolactone (PCL) and poly-d,l-lactide-co-glycolide (PLGA) were employed to generate nanoparticles loaded with UT extract in a single emulsion solvent evaporation method. The nanoparticles were characterized by particle size, zeta potential, morphology and entrapment efficiency along with stability and release profiles. The nanoparticles presented entrapment efficiencies above 60% and a mean diameter below 300nm. UT-PCL nanoparticles presented higher entrapment efficiency and mean particle size as well as a slow release rate. The UT-PLGA nanoparticles showed higher drug loading. Two prostate cancer cell-lines, LNCaP and DU145 that were derived from metastatic sites, served as model systems to assess cytotoxicity and anti-cancer activity. In vitro, both formulations reduced the viability of DU145 and LNCaP cells. Yet, the UT-PLGA nanoparticles showed higher cytotoxicity towards DU145 cells while the UTPCL against LNCaP cells. The results confirm that the incorporation of UT into nanoparticles could enhance its anti-cancer activities that can offer a viable alternative for the treatment of prostrate canner and highlights the potential of nanostructured systems to provide a promising methodology to enhance the activity of natural extracts.
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Affiliation(s)
- Ana F Ribeiro
- Departamento de Fármacos e Medicamentos, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, 21941-902 Rio de Janeiro, RJ, Brazil.,Faculdade de Farmácia, Federal Institute of Education, Science and Technology of Rio de Janeiro, Rua Professor Carlos Wenceslau, 343, 21715-000 Rio de Janeiro, RJ, Brazil
| | - Juliana F Santos
- Faculdade de Farmácia, Federal Institute of Education, Science and Technology of Rio de Janeiro, Rua Professor Carlos Wenceslau, 343, 21715-000 Rio de Janeiro, RJ, Brazil
| | - Rômulo R Mattos
- Programa de pesquisa em Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, 21941-902 Rio de Janeiro, RJ, Brazil
| | - Eliane G O Barros
- Programa de pesquisa em Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, 21941-902 Rio de Janeiro, RJ, Brazil
| | - Luiz Eurico Nasciutti
- Programa de pesquisa em Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, 21941-902 Rio de Janeiro, RJ, Brazil
| | - Lúcio M Cabral
- Departamento de Fármacos e Medicamentos, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, 21941-902 Rio de Janeiro, RJ, Brazil
| | - Valeria P DE Sousa
- Departamento de Fármacos e Medicamentos, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, 21941-902 Rio de Janeiro, RJ, Brazil
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Hernandes C, de Oliveira RN, de Souza Santos AH, Malvezzi H, de Azevedo BC, Gueuvoghlanian-Silva BY, Pereira AMS, Podgaec S. The Effect of Rutin and Extracts of Uncaria guianensis (Aubl.) J. F. Gmeland on Primary Endometriotic Cells: A 2D and 3D Study. Molecules 2020; 25:molecules25061325. [PMID: 32183239 PMCID: PMC7144928 DOI: 10.3390/molecules25061325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/29/2020] [Accepted: 03/04/2020] [Indexed: 02/07/2023] Open
Abstract
There is increasing interest in the potential of natural compounds to treat diseases, such as endometriosis, a gynecological disorder that affects 10–15% of women of reproductive age, and it is related to severe pelvic pain and infertility. We have evaluated the in vitro effects of rutin and the aqueous bark, roots, and leaf extracts (ABE, ARE, and ALE, respectively) and isolated components of Uncaria guianensis on stromal cells from eutopic endometrium and lesions of patients with endometriosis. Two- and three-dimensional cultures were used to assess the cell death and production of reactive oxygen species (ROS), cytokines and growth factors of cells following exposure to these natural products. The applied treatments did not reduce cellular viability, but ROS production did increase. In addition, significant increases in the levels of interleukin (IL)-15, IL-17A, IL-4, IL-6, tumor necrosis factor-α, and vascular endothelium growth factor were observed when 2D-cells from endometrium of patients with endometriosis were treated with ABE, while exposure to ALE induced significant increases in epidermal growth factor in lesion cells.
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Affiliation(s)
- Camila Hernandes
- Hospital Israelita Albert Einstein, Av. Albert Einstein 627, Morumbi 05651-901, São Paulo, SP, Brazil; (R.N.d.O.); (A.H.d.S.S.); (H.M.); (B.C.d.A.); (B.Y.G.-S.); (S.P.)
- Correspondence: ; Tel.: +55-11-2151031
| | - Renata Nascimento de Oliveira
- Hospital Israelita Albert Einstein, Av. Albert Einstein 627, Morumbi 05651-901, São Paulo, SP, Brazil; (R.N.d.O.); (A.H.d.S.S.); (H.M.); (B.C.d.A.); (B.Y.G.-S.); (S.P.)
| | - Artur Henrique de Souza Santos
- Hospital Israelita Albert Einstein, Av. Albert Einstein 627, Morumbi 05651-901, São Paulo, SP, Brazil; (R.N.d.O.); (A.H.d.S.S.); (H.M.); (B.C.d.A.); (B.Y.G.-S.); (S.P.)
| | - Helena Malvezzi
- Hospital Israelita Albert Einstein, Av. Albert Einstein 627, Morumbi 05651-901, São Paulo, SP, Brazil; (R.N.d.O.); (A.H.d.S.S.); (H.M.); (B.C.d.A.); (B.Y.G.-S.); (S.P.)
| | - Bruna Cestari de Azevedo
- Hospital Israelita Albert Einstein, Av. Albert Einstein 627, Morumbi 05651-901, São Paulo, SP, Brazil; (R.N.d.O.); (A.H.d.S.S.); (H.M.); (B.C.d.A.); (B.Y.G.-S.); (S.P.)
| | - Bárbara Yasmin Gueuvoghlanian-Silva
- Hospital Israelita Albert Einstein, Av. Albert Einstein 627, Morumbi 05651-901, São Paulo, SP, Brazil; (R.N.d.O.); (A.H.d.S.S.); (H.M.); (B.C.d.A.); (B.Y.G.-S.); (S.P.)
| | - Ana Maria Soares Pereira
- Universidade de Ribeirão Preto, Av. Costabile Romano 2201, Ribeirania 14096-900, Ribeirão Preto, SP, Brazil;
| | - Sergio Podgaec
- Hospital Israelita Albert Einstein, Av. Albert Einstein 627, Morumbi 05651-901, São Paulo, SP, Brazil; (R.N.d.O.); (A.H.d.S.S.); (H.M.); (B.C.d.A.); (B.Y.G.-S.); (S.P.)
- Departamento de Obstetrícia e Ginecologia, Faculdade de Medicina, Universidade de São Paulo, Av. Dr. Arnaldo 455, Cerqueira César 01246-903, São Paulo, SP, Brazil
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Unnatural spirocyclic oxindole alkaloids biosynthesis in Uncaria guianensis. Sci Rep 2019; 9:11349. [PMID: 31383908 PMCID: PMC6683290 DOI: 10.1038/s41598-019-47706-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 07/15/2019] [Indexed: 01/07/2023] Open
Abstract
Spiro-oxindole scaffolds have been studied due to their promising therapeutic potential. In the Amazon rainforest there are two important Uncaria species known as “cat’s claw”, which biosynthesize spirocyclic oxindole alkaloids; Uncaria tomentosa (Willd. ex Schult.) DC. and Uncaria guianensis (Aublet) Gmell. We carried out a precursor-directed biosynthesis approach with U. guianensis and successfully obtained oxindole alkaloid analogues with molecular mass corresponding to the addition of a methyl or fluorine group on the oxindole ring using tryptamine analogue precursors. Two of these novel oxindole alkaloid analogues (3b-7-methyl-isomitraphylline and 3c-6-fluoro-isomitraphylline) were isolated and characterized by NMR spectroscopy and ESI-QTOF-MS/MS. Having established a substrate feeding protocol for these plantlets, the biosynthetic route for mitraphylline (1), rhynchophylline (2), isomitraphylline (3) and isorhynchophylline (4) was also investigated using 13C-precursors (1-13C-D-glucose, 2-13C-tryptophan, 1-13C-DL-glyceraldehyde, and methyl-13C-D-methionine).
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Yu X, Zhao Q, Zhang H, Fan C, Zhang X, Xie Q, Xu C, Liu Y, Wu X, Han Q, Zhang H. Gambogenic acid inhibits LPS-simulated inflammatory response by suppressing NF-κB and MAPK in macrophages. Acta Biochim Biophys Sin (Shanghai) 2016; 48:454-61. [PMID: 27025602 DOI: 10.1093/abbs/gmw021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 01/26/2016] [Indexed: 01/21/2023] Open
Abstract
Inflammation is a response of body tissues to injury and infection. Compounds that can inhibit inflammation have been shown to have potential therapeutic clinical application. Gambogenic acid (GEA) has potent antitumor and anti-inflammatory activities. Herein, the molecular mechanisms of GEA's anti-inflammatory effect were investigated in lipopolysaccharide (LPS)-stimulated macrophage cells. The results showed that pretreatment with GEA could markedly inhibit interleukin (IL)-1α, IL-1β, tumor necrosis factor-α, IFN-β, IL-12b, and IL-23a production in a dose-dependent manner in LPS-induced model. Furthermore, this drug significantly reduced the release of nitric oxide (NO), and impaired the protein level of inducible NO synthase and the cyclooxygenase 2. The finding also showed that the effect of GEA may be related to the suppression of the nuclear factor-κB (NF-κB) and mitogen-activated protein kinase (MAPK) signaling pathway. These results indicate that GEA could suppress LPS-simulated inflammatory response partially by attenuating NO synthesis and NF-κB and MAPK activation, suggesting that it may become a potent therapeutic agent for the treatment of inflammatory diseases.
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Affiliation(s)
- Xianjun Yu
- Laboratory of Chinese Herbal Pharmacology, Oncology Center, Renmin Hospital, Hubei University of Medicine, Shiyan 442000, China Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Qun Zhao
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Haiwei Zhang
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Cunxian Fan
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xixi Zhang
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Qun Xie
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China Department of Anesthesiology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Chengxian Xu
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yongbo Liu
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiaoxia Wu
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Quanbin Han
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Haibing Zhang
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
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Taylor P, Colman L, Bajoon J. The search for plants with anticancer activity: pitfalls at the early stages. JOURNAL OF ETHNOPHARMACOLOGY 2014; 158 Pt A:246-254. [PMID: 25446637 DOI: 10.1016/j.jep.2014.10.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 10/09/2014] [Accepted: 10/19/2014] [Indexed: 06/04/2023]
Abstract
Inhibition assays on tumour cells in vitro are commonly used to confirm the activity of extracts, fractions and compounds from plants reported to be antitumoural. The majority of assays report the IC50 (50% inhibitory concentration), whereas others distinguish between inhibition of cell proliferation (cytostasis) and cell death (cytotoxicity). Here, we offer some suggestions as to the different types of assay, the cell lines that may be used, control cells and drugs, as well as the interpretation of the results. Using both theoretical considerations and experimental data, we specifically question the frequent overinterpretation of reported results regarding the selectivity for cancer cells of the plant extract or compound under study, concluding that this "selectivity" is due to a quantitative difference in cell proliferation rates, rather than a qualitative difference between normal and tumour cells. Inhibition assays will always represent one of the first steps in the discovery of clinically valuable new drugs, but these assays do not allow us to conclude that we have found the "magic bullet".
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Affiliation(s)
- P Taylor
- Laboratorio de Patología Celular y Molecular, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas, Apartado 20632, Caracas 1020-A, Venezuela.
| | - L Colman
- Laboratorio de Patología Celular y Molecular, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas, Apartado 20632, Caracas 1020-A, Venezuela
| | - J Bajoon
- Laboratorio de Patología Celular y Molecular, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas, Apartado 20632, Caracas 1020-A, Venezuela
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Barboza RS, Mazzei JL, Valente LMM, Siani AC. Optimized Kaempferitrin Isolation from Uncaria guianensis Leaves by Solid-Phase Extraction. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2014.917666] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Rodolfo S. Barboza
- a Departamento de Química Orgânica, Instituto de Química , Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil
| | - José L. Mazzei
- b Fundação Oswaldo Cruz , Instituto de Tecnologia em Fármacos , Rio de Janeiro , Brazil
| | - Ligia M. M. Valente
- a Departamento de Química Orgânica, Instituto de Química , Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil
| | - Antonio C. Siani
- b Fundação Oswaldo Cruz , Instituto de Tecnologia em Fármacos , Rio de Janeiro , Brazil
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