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He MT, Nguyen QN, Cho EJ, Kim SH, Park S, Park JY, Lee S, Kang KS. Aloe-Emodin Isolated from Rheum Undulatum L. Regulates Cell Cycle Distribution and Cellular Senescence in Human Prostate Cancer LNCaP Cells. J Diet Suppl 2023; 21:389-407. [PMID: 38062982 DOI: 10.1080/19390211.2023.2284985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Senescence can promote hyperplastic pathologies, such as cancer. Prostate cancer is the second most common type of cancer in men. The p21-mediate cellular senescence, facilitated through the tumor suppressor p53-dependent pathway, is considered the primary mechanism for cancer treatment. Aloe-emodin, has been reported to exert anticancer effects in various types of cancers. This study aimed to investigate the bioactivity of aloe-emodin in LNCaP cells via the activation of p21-mediated cellular senescence. Aloe-emodin treatment increased the percentage of cells in the G1 phase while decreasing the percentage in the S phase. This effect was reflected in the expression levels of proteins associated with cell cycle progression, such as p21CIP, retinoblastoma protein, and cyclin-dependent kinase2/4 in LNCaP cells. However, aloe-emodin-treated LNCaP cells did not induce cell cycle arrest at G2/M checkpoint. Moreover, increased senescence-associated-galactosidase activity was observed in a dose-dependent manner following treatment with aloe-emodin. Aloe-emodin also induced DNA damage by modulating the expression of histone H2AX and lamin B1. Furthermore, aloe-emodin inhibited the proliferation of LNCaP cells, contrasting with the exponential growth observed in the nontreated cells. Importantly, this inhibition did not impact the immune system, as evidenced by the increased proliferation of splenocytes isolated from mice. These findings provide preliminary evidence of the anticancer effect of aloe-emodin in LNCaP cells, necessitating further investigations into the underlying mechanisms in vivo and human subjects.
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Affiliation(s)
- Mei Tong He
- College of Korean Medicine, Gachon University, Seongnam, South Korea
| | - Quynh Nhu Nguyen
- College of Korean Medicine, Gachon University, Seongnam, South Korea
| | - Eun Ju Cho
- Department of Food Science & Nutrition, Pusan National University, Busan, South Korea
| | - Seung Hyun Kim
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, South Korea
| | - SeonJu Park
- Chuncheon Center, Korea Basic Science Institute (KBSI), Chuncheon, South Korea
| | - Jun Yeon Park
- Department of Food Science and Biotechnology, Kyonggi University, Suwon, South Korea
| | - Sullim Lee
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam, South Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam, South Korea
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Hu F, Yang X, Leng X, Wang C, Yang K, Zhang L, Schipper D. Construction of a Near-IR-Luminescent Rectangular Yb(III) Complex from a Dodecadentate Schiff Base Ligand for the Excitation-Wavelength-Dependent Detection of Aloe Emodin (a Natural Medicinal Ingredient). Inorg Chem 2023; 62:2508-2512. [PMID: 36722726 DOI: 10.1021/acs.inorgchem.2c04301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A near-IR-luminescent octanuclear Yb(III) complex 1 was constructed from a new dodecadentate Schiff base ligand, which is used in the rapid and reliable wavelength-dependent detection of aloe emodin (AE) with high sensitivity even in the presence of other interferences.
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Affiliation(s)
- Fan Hu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou325035, China
| | - Xiaoping Yang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou325035, China
| | - Xilong Leng
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou325035, China
| | - Chengri Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou325035, China
| | - Keqin Yang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou325035, China
| | - Lijie Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou325035, China
| | - Desmond Schipper
- Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas78712, United States
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Sharifi-Rad J, Herrera-Bravo J, Kamiloglu S, Petroni K, Mishra AP, Monserrat-Mesquida M, Sureda A, Martorell M, Aidarbekovna DS, Yessimsiitova Z, Ydyrys A, Hano C, Calina D, Cho WC. Recent advances in the therapeutic potential of emodin for human health. Biomed Pharmacother 2022; 154:113555. [PMID: 36027610 DOI: 10.1016/j.biopha.2022.113555] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/04/2022] [Accepted: 08/14/2022] [Indexed: 01/01/2023] Open
Abstract
Emodin (1,3,8-trihydroxy-6-methylanthraquinone) is a bioactive compound, a natural anthraquinone aglycone, present mainly in herbaceous species of the families Fabaceae, Polygonaceae and Rhamnaceae, with a physiological role in protection against abiotic stress in vegetative tissues. Emodin is mainly used in traditional Chinese medicine to treat sore throats, carbuncles, sores, blood stasis, and damp-heat jaundice. Pharmacological research in the last decade has revealed other potential therapeutic applications such as anticancer, neuroprotective, antidiabetic, antioxidant and anti-inflammatory. The present study aimed to summarize recent studies on bioavailability, preclinical pharmacological effects with evidence of molecular mechanisms, clinical trials and clinical pitfalls, respectively the therapeutic limitations of emodin. For this purpose, extensive searches were performed using the PubMed/Medline, Scopus, Google scholar, TRIP database, Springer link, Wiley and SciFinder databases as a search engines. The in vitro and in vivo studies included in this updated review highlighted the signaling pathways and molecular mechanisms of emodin. Because its bioavailability is low, there are limitations in clinical therapeutic use. In conclusion, for an increase in pharmacotherapeutic efficacy, future studies with carrier molecules to the target, thus opening up new therapeutic perspectives.
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Affiliation(s)
| | - Jesús Herrera-Bravo
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Chile; Center of Molecular Biology and Pharmacogenetics, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
| | - Senem Kamiloglu
- Department of Food Engineering, Faculty of Agriculture, Bursa Uludag University, 16059 Gorukle, Bursa, Turkey; Science and Technology Application and Research Center (BITUAM), Bursa Uludag University, 16059 Gorukle, Bursa, Turkey
| | - Katia Petroni
- Dipartimento di Bioscienze, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy.
| | - Abhay Prakash Mishra
- Department of Pharmaceutical Chemistry, H.N.B. Garhwal (A Central) University, Srinagar Garhwal, Uttarakhand 246174, India.
| | - Margalida Monserrat-Mesquida
- Research Group in Community Nutrition and Oxidative Stress, University Research Institute of Health and Health Research Institute of Balearic Islands (IdISBa), University of the Balearic Islands-IUNICS, 07122 Palma de Mallorca, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain.
| | - Antoni Sureda
- Research Group in Community Nutrition and Oxidative Stress, University Research Institute of Health and Health Research Institute of Balearic Islands (IdISBa), University of the Balearic Islands-IUNICS, 07122 Palma de Mallorca, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain.
| | - Miquel Martorell
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Chile; Department of Nutrition and Dietetics, Faculty of Pharmacy, and Centre for Healthy Living, University of Concepción, 4070386 Concepción, Chile.
| | - Dossymbetova Symbat Aidarbekovna
- Almaty Tecnological University, Kazakh-Russian Medical University, Almaty 050012, str. Tole bi 100, Str. Torekulova 71, Kazakhstan.
| | - Zura Yessimsiitova
- Department of Biodiversity and Bioresource, Al-Farabi Kazakh National University, al-Farabi av. 71, 050040 Almaty, Kazakhstan.
| | - Alibek Ydyrys
- Biomedical Research Centre, Al-Farabi Kazakh National University, al-Farabi av. 71, 050040 Almaty, Kazakhstan.
| | - Christophe Hano
- Department of Biological Chemistry, University of Orleans, Eure et Loir Campus, 28000 Chartres, France.
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania.
| | - William C Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong.
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Peptide-Mediated Targeted Delivery of Aloe-Emodin as Anticancer Drug. Molecules 2022; 27:molecules27144615. [PMID: 35889487 PMCID: PMC9320513 DOI: 10.3390/molecules27144615] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/13/2022] [Accepted: 07/15/2022] [Indexed: 12/10/2022] Open
Abstract
Breast cancer is one of the most diffuse cancers in the world and despite the availability of the different drugs employed against it, the need for new and particularly more specific molecules is ever growing. In this framework, natural products are increasingly assuming an important role as new anticancer drugs. Aloe-emodin (AE) is one of the best characterized molecules in this field. The functionalization of bioactive natural products with selected peptide sequences to enhance their bioavailability and specificity of action is a powerful and promising strategy. In this study, we analyzed the cell specificity, cell viability effects, intracellular distribution, and immune cell response of a new peptide conjugate of Aloe-emodin in SKBR3 and A549 cell lines by means of viability tests, flow cytometry, and confocal microscopy. The conjugate proved to be more effective at reducing cell viability than AE in both cell lines. Furthermore, the results showed that it was mainly internalized within the SKBR3 cells, showing a nuclear localization, while A459 cells displayed mainly a cytoplasmic distribution. A preserving effect of the conjugate on NKs’ cell function was also observed. The designed conjugate showed a promising specific activity towards HER2-expressing cells coupled with an enhanced water solubility and a higher cytotoxicity; thus, the resulting proof-of-concept molecule can be further improved as an anticancer compound.
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Advances in Understanding the Role of Aloe Emodin and Targeted Drug Delivery Systems in Cancer. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:7928200. [PMID: 35087619 PMCID: PMC8789423 DOI: 10.1155/2022/7928200] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 12/06/2021] [Accepted: 12/18/2021] [Indexed: 12/20/2022]
Abstract
Cancer is one of the important causes of death worldwide. Despite remarkable improvements in cancer research in the past few decades, several cancer patients still cannot be cured owing to the development of drug resistance. Natural sources might have prominence as potential drug candidates. Among the several chemical classes of natural products, anthraquinones are characterized by their large structural variety, noticeable biological activity, and low toxicity. Aloe emodin, an anthraquinone derivative, is a natural compound found in the roots and rhizomes of many plants. This compound has proven its antineoplastic, anti-inflammatory, antiangiogenic, and antiproliferative potential as well as ability to prevent cancer metastasis and potential in reversing multidrug resistance of cancer cells. The anticancer property of aloe emodin, a broad-spectrum inhibitory agent of cancer cells, has been detailed in many biological pathways. In cancer cells, these molecular mechanisms consist of inhibition of cell growth and proliferation, cell cycle arrest deterioration, initiation of apoptosis, antimetastasis, and antiangiogenic effect. In accordance with the strategy of developing potential drug candidates from natural products, aloe emodin's low bioavailability has been tried to be overcome by structural modifications and nanocarrier systems. Consequently, this review summarizes the antiproliferative and anticarcinogenic properties of aloe emodin, as well as the enhanced activity of its derivatives and the advantages of drug delivery systems on bioavailability.
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El-Far YM, El-Mesery M. Pevonedistat attenuates cisplatin-induced nephrotoxicity in mice by downregulating the release of inflammatory mediators. J Biochem Mol Toxicol 2021; 35:e22908. [PMID: 34476871 DOI: 10.1002/jbt.22908] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 07/09/2021] [Accepted: 08/20/2021] [Indexed: 01/11/2023]
Abstract
Pevonedistat (MLN4924) is a specific NEDD8-activating enzyme inhibitor that inactivates cullin-RING ligases involved in ubiquitylation and turnover of different signaling molecules. In the current study, we evaluated the effect of pevonedistat on cisplatin (CIS)-induced nephrotoxicity in mice. Serum creatinine and urea levels were analyzed in different groups. Histopathological examination of renal tissue was done using hematoxylin and eosin staining. In addition, renal IL-6 and TNF-α expressions were analyzed using the enzyme-linked immunosorbent assay technique, and IL-1β and NF-κB expressions were analyzed by immunohistochemical staining of renal tissue. Caspase-3, A20, β-catenin, and Nrf2 gene expressions in renal tissue were analyzed using the reverse-transcription polymerase chain reaction technique. Western blot analysis was adopted to assess cleaved caspase-3 and β-catenin expressions in renal tissue. Pevonedistat coadministration with CIS improved kidney functions and attenuated CIS-induced nephrotoxicity as indicated by the significant decrease in serum creatinine and urea levels. In addition, pevonedistat coadministration with CIS showed a significant decrease in caspase-3 and a significant increase in A20, β-catenin, and Nrf2 gene expressions. Also, pevonedistat decreased caspase-3 cleavage to p19 in mice treated with CIS. Moreover, pevonedistat decreased CIS-induced upregulation of IL-6, TNF-α, IL-1β, and NF-κB protein expressions in renal tissue. Thus, pevonedistat alleviated CIS-induced nephrotoxicity that might be attributed to suppression of the inflammation induced in renal tissue.
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Affiliation(s)
- Yousra M El-Far
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Mohamed El-Mesery
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Pecere T, Ponterio E, Di Iorio E, Carli M, Fassan M, Santoro L, Bissaro M, Bernabè G, Moro S, Castagliuolo I, Palù G. On the mechanism of tumor cell entry of aloe-emodin, a natural compound endowed with anticancer activity. Int J Cancer 2021; 149:1129-1136. [PMID: 33990938 PMCID: PMC8361998 DOI: 10.1002/ijc.33686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 03/19/2021] [Accepted: 04/27/2021] [Indexed: 01/17/2023]
Abstract
Aloe‐emodin (1,8‐dihydroxy‐3‐[hydroxymethyl]‐anthraquinone), AE, is one of the active constituents of a number of plant species used in traditional medicine. We have previously identified, for the first time, AE as a new antitumor agent and shown that its selective in vitro and in vivo killing of neuroblastoma cells was promoted by a cell‐specific drug uptake process. However, the molecular mechanism underlying the cell entry of AE has remained elusive as yet. In this report, we show that AE enters tumor cells via two of the five somatostatin receptors: SSTR2 and SSTR5. This observation was suggested by gene silencing, receptor competition, imaging and molecular modeling experiments. Furthermore, SSTR2 was expressed in all surgical neuroblastoma specimens we analyzed by immunohistochemistry. The above findings have strong implications for the clinical adoption of this natural anthraquinone molecule as an antitumor agent.
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Affiliation(s)
- Teresa Pecere
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Eleonora Ponterio
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Enzo Di Iorio
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Modesto Carli
- Hematology Oncology Division, Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - Matteo Fassan
- Department of Medicine, University of Padova, Padova, Italy
| | | | - Maicol Bissaro
- Molecular Modeling Section (MMS), Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Giulia Bernabè
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Stefano Moro
- Molecular Modeling Section (MMS), Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | | | - Giorgio Palù
- Department of Molecular Medicine, University of Padova, Padova, Italy
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Ohiagu FO, Chikezie PC, Chikezie CM, Enyoh CE. Anticancer activity of Nigerian medicinal plants: a review. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00222-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Abstract
Background
Cancer is currently the leading cause of death globally and the number of deaths from cancer is on the rise daily. Medicinal plants have been in continuous use over the years for the management of cancer, particularly, in most developing countries of the world including Nigeria. The use of synthetic drugs for the treatment of cancer is often accompanied by toxic side effects. Thus, the alternative use of readily available and inexpensive medicinal plants is the panacea to the toxic side effects associated with synthetic drugs.
Main body
The present review summarized the anticancer activity of 51 medicinal plants that are widespread in all regions of Nigeria. Furthermore, the proposed anticancer pharmacological actions as well as the anticancer bioactive compounds, the type of cancer cell inhibited, the plant parts responsible for the anticancer activity, and the nature of the extracts used for the studies were discussed in this review. The 51 Nigerian medicinal plants were reported to exhibit anticancer activities of the prostate, cervices, lung, skin, colon, esophagus, blood, ovary, central nervous system/brain, breast, stomach, pancreas, larynx, and kidney. The major classes of bioactive compounds indicated to be responsible for the anticancer activity include the polyphenols, flavonoids, alkaloids, saponins, triterpenes, tannins, and quinones. The major anticancer pharmacological actions of these bioactive compounds were antiproliferative, cytotoxic, cytostatic, antimetastatic, apoptotic, and antioxidative as well as provoked cell cycle arrest, inhibition of angiogenesis and reduction of cancer cell viability.
Conclusion
The Nigerian medicinal plants can be harnessed to provide for readily available and inexpensive anticancer drugs in the future because the plants reported in this review showed promising anticancer activity.
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Fakchich J, Elachouri M. An overview on ethnobotanico-pharmacological studies carried out in Morocco, from 1991 to 2015: Systematic review (part 1). JOURNAL OF ETHNOPHARMACOLOGY 2021; 267:113200. [PMID: 32750461 DOI: 10.1016/j.jep.2020.113200] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 07/08/2020] [Accepted: 07/16/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The full bibliometric records of data retrieved from ethnobotanical field studies carried out in Morocco (1991-2015) was quali-quantitatively analysed. Despite the importance of traditional medicinal uses in Morocco, any comments about the methodologies and approaches adopted by reviewed studies have been undertaken. Include more data about the importance of traditional medicinal uses in Morocco. AIM OF THE STUDY Three key points were targeted in this review: (i) to contribute to original compilation of medicinal plants traditionally used by people at whole Morocco, by gathering and documenting the current status of these ancestral medical practices, (ii) to provide a novel insight into the relationship between local and biomedical disease concepts in Moroccan society, taking into account health-related beliefs, and their influences on medicinal plant uses, (iii) to figurout the weaknesses and the strengths of the conceptual approches and methods adopted by researchers in ethnobotanical field works. MATERIALS AND METHODS With the help of a computerized database querying, we conducted an extensive literature search respecting our integration criteria. We performed this bibliographic research by using the following search engines available over the Web: Google Scholar, PUBMED, Sciencedirect, Current Content Connect, SCOPUS, SPRINGER LINK, GLOBAL PLANTS, Cochrane Library and SCIRUS. The scientific names listed in the present paper have been validated according to the "The Plant List" and the African Plants Database in order to standardize ethnobotanical data on an international level. For the analysis of data gathered, quali-quantitative analyses have been performed. RESULTS A total of 905 medicinal plant species belonging to 116 families and 726 genera have been selected from 63 published articles. The dominant families were ASTERACEAE (111 species) followed by the FABACEAE (77 species), LAMIACEAE (75 species) and APIACEAE (46 species). The plant species listed are used to cure several public ailments. The digestive ailments represented the most important category (494 species) followed by dermatological diseases (407 species), diabetes (315 species) and urinary diseases (277 species). We assigned the importance of the plant species by several measures (including Frequency Cited (FC), Number of Uses (NU), Number of Respondents (NR) and Index of Performance (IP). The ICF (Informant Consensus Factor) calculated was important in all categories of diseases averaging 47%. CONCLUSION The results obtained, which cover the whole country, delineate the profile of rich wealth of indigenous knowledge on traditional uses of medicinal plants heald by Moroccan society. The total number of 905 plant species listed in this paper, are currently being utilized as medicines and the number is expected to grow as infrastructure allows greater access to unexplored parts of the country. Furthermore, the know how, regarding the plants used, is consistent because the ICF has recorded important values for most diseases treated. Furthermore, in the present paper, we suggested, for authors, some useful recommendations for ethnobotanical field works such as the respect of ethnobotanical standards including checklist of plants with international data base, the deposited voucher specimens, sampling and collection methods.
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Affiliation(s)
- Jamila Fakchich
- Laboratory of Physiology, Genetics, and Ethnopharmacology, Mohammed First University, Oujda, Morocco.
| | - Mostafa Elachouri
- Laboratory of Physiology, Genetics, and Ethnopharmacology, Mohammed First University, Oujda, Morocco.
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Salata C, Monteil V, Leijon M, Bell-Sakyi L, Mirazimi A. Identification and validation of internal reference genes for real-time quantitative polymerase chain reaction-based studies in Hyalomma anatolicum ticks. Ticks Tick Borne Dis 2020; 11:101417. [PMID: 32222359 PMCID: PMC7284302 DOI: 10.1016/j.ttbdis.2020.101417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/10/2020] [Accepted: 03/17/2020] [Indexed: 12/18/2022]
Abstract
Crimean-Congo hemorrhagic fever (CCHF) is an emerging tick-borne viral disease caused by the orthonairovirus CCHF virus (CCHFV). Ticks of the genus Hyalomma are the viral reservoir and they represent the main vector transmitting the virus to their hosts during blood feeding. However, how CCHFV replicates in its natural arthropod host cells and the nature of virus/host interactions are still largely unknown. With the aim of developing tools for use in this field, we identified and validated expression of four candidate endogenous control tick genes in a Hyalomma anatolicum-derived cell line. These genes will be useful for normalization of viral/cellular transcripts in infection/expression studies or as internal controls in molecular epidemiology surveys of pathogens transmitted by Hyalomma ticks.
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Affiliation(s)
- Cristiano Salata
- Department of Molecular Medicine, University of Padova, Via Gabelli, 63, IT-35121 Padova, Italy; Department of Microbiology, The Public Health Agency of Sweden, Nobels Väg 18, SE-171 82 Solna, Sweden.
| | - Vanessa Monteil
- Department of Microbiology, The Public Health Agency of Sweden, Nobels Väg 18, SE-171 82 Solna, Sweden; Department for Laboratory Medicine, Karolinska University Hospital and KI, SE-14186 Huddinge, Sweden.
| | - Mikael Leijon
- National Veterinary Institute, SE-756 51 Uppsala, Sweden.
| | - Lesley Bell-Sakyi
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool, Science Park IC2, 146 Brownlow Hill, Liverpool L3 5RF, United Kingdom.
| | - Ali Mirazimi
- Department of Microbiology, The Public Health Agency of Sweden, Nobels Väg 18, SE-171 82 Solna, Sweden; Department for Laboratory Medicine, Karolinska University Hospital and KI, SE-14186 Huddinge, Sweden; National Veterinary Institute, SE-756 51 Uppsala, Sweden.
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Froldi G, Baronchelli F, Marin E, Grison M. Antiglycation Activity and HT-29 Cellular Uptake of Aloe-Emodin, Aloin, and Aloe arborescens Leaf Extracts. Molecules 2019; 24:molecules24112128. [PMID: 31195732 PMCID: PMC6600357 DOI: 10.3390/molecules24112128] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 05/23/2019] [Accepted: 06/03/2019] [Indexed: 12/14/2022] Open
Abstract
Aloe arborescens is a relevant species largely used in traditional medicine of several countries. In particular, the decoction of leaves is prepared for various medicinal purposes including antidiabetic care. The aim of this research was the study of the antiglycation activity of two A. arborescens leaf extracts and isolated compounds: aloin and aloe-emodin. These phytoconstituents were quantitatively assessed in methanolic and hydroalcoholic extracts using high performance liquid chromatography (HPLC) analysis. In addition, the total phenolic and flavonoid contents were detected. In order to study their potential use in diabetic conditions, the antiglycation and antiradical properties of the two extracts and aloin and aloe-emodin were investigated by means of bovine serum albumin (BSA) and 1,1-diphenyl-2-picryl-hydrazil (DPPH) assays; further, their cytotoxicity in HT-29 human colon adenocarcinoma cells was evaluated by 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide (MTT) assay. Furthermore, the ability of aloin and aloe-emodin to permeate the cellular membranes of HT-29 cells was determined in order to estimate their potential in vivo absorption. This assessment indicated that aloe-emodin can substantially pass through cell membranes (~20%), whereas aloin did not permeate into HT-29 cells. Overall, the data show that both the methanolic and the hydroalcoholic A. arborescens extracts determine significant inhibition of glycation and free-radical persistence, without any cytotoxic activity. The data also show that the antiglycation and the antiradical activities of aloin and aloe-emodin are lower than those of the two extracts. In relation to the permeability study, only aloe-emodin is able to cross HT-29 cellular membranes, showing the attitude to pass through the intestinal layer. Overall, the present data surely support the traditional use of A. arborescens leaf extracts against hyperglycemic conditions, while aloin and aloe-emodin as potential drugs need further study.
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Affiliation(s)
- Guglielmina Froldi
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy.
| | - Federica Baronchelli
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy.
| | - Elisa Marin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy.
| | - Margherita Grison
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy.
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Li R, Li W, You Y, Guo X, Peng Y, Zheng J. Metabolic Activation and Cytotoxicity of Aloe-Emodin Mediated by Sulfotransferases. Chem Res Toxicol 2019; 32:1281-1288. [PMID: 31046239 DOI: 10.1021/acs.chemrestox.9b00081] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Aloe-emodin (AE) is a major anthraquinone ingredient of numerous traditional Chinese medicines with a variety of beneficial biological activities in vitro. Previous studies suggested that AE possessed cytotoxicity and genotoxicity. Nevertheless, the mechanisms of the toxic action of AE have not yet been fully clarified. The present study aimed at characterization of metabolic pathways of AE to better understand the mechanisms of AE-induced cytotoxicity. An AE-derived glutathione conjugate (AE-GSH) was observed in rat liver cytosol incubations containing AE and GSH, along with 3'-phosphoadenosine-5'-phosphosulfate (PAPS). Similar incubation fortified with N-acetylcysteine (NAC) in place of GSH offered an AE-NAC conjugate corresponding to the GSH conjugate. The formation of the two conjugates was found to require PAPS. The two conjugates were respectively detected in bile and urine of rats given AE. Sulfotransferase (SULT) inhibitor pentachlorophenol (PCP) suppressed the production of the observed AE-GSH/NAC conjugates in vivo, which suggested that SULTs participated in the process of the metabolic activation of AE. The presence of PCP attenuated cell susceptibility to AE-induced cytotoxicity. The present study illustrated potential association of sulfation-mediated bioactivation of AE with its cytotoxicity.
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Affiliation(s)
- Ruihong Li
- Wuya College of Innovation , Shenyang Pharmaceutical University , Shenyang , Liaoning 110016 , P.R. China
| | - Wei Li
- Wuya College of Innovation , Shenyang Pharmaceutical University , Shenyang , Liaoning 110016 , P.R. China
| | - Yutong You
- Wuya College of Innovation , Shenyang Pharmaceutical University , Shenyang , Liaoning 110016 , P.R. China
| | - Xiucai Guo
- Wuya College of Innovation , Shenyang Pharmaceutical University , Shenyang , Liaoning 110016 , P.R. China
| | - Ying Peng
- Wuya College of Innovation , Shenyang Pharmaceutical University , Shenyang , Liaoning 110016 , P.R. China
| | - Jiang Zheng
- Wuya College of Innovation , Shenyang Pharmaceutical University , Shenyang , Liaoning 110016 , P.R. China.,State Key Laboratory of Functions and Applications of Medicinal Plants, Key Laboratory of Pharmaceutics of Guizhou Province , Guizhou Medical University , Guiyang , Guizhou 550025 , P.R. China
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13
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Das A, Suresh Kumar G, Dutta S. Interaction of aloe active compounds with calf thymus DNA. J Mol Recognit 2019; 32:e2786. [PMID: 31062439 DOI: 10.1002/jmr.2786] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 01/09/2023]
Abstract
Natural anthraquinone compounds have emerged as potent anticancer chemotherapeutic agents because of their promising DNA-binding properties. Aloe vera is among one of the very well-known medicinal plants, and the anthraquinone derivatives like aloe emodin (ALM), aloins (ALN), and aloe emodin-8-glucoside (ALMG) are known to have immense biological activities. Here, we have used biophysical methods to elucidate the comparative DNA-binding abilities of these three molecules. Steady-state fluorescence study indicated complexation between calf thymus DNA (ctDNA) and both the molecules ALM and ALMG whereas ALN showed very weak interaction with DNA. Displacement assays with ctDNA-bound intercalator (ethidium bromide) and a groove binder (Hoechst 33258) indicated preferential binding of both ALM and ALMG to minor groove of DNA. Isothermal titration calorimetric (ITC) data suggested spontaneous exothermic single binding mode of both the molecules: ALM and ALMG. Entropy is the most important factor which contributed to the standard molar Gibbs energy associated with relatively small favorable enthalpic contribution. The equilibrium constants of binding to ctDNA were (6.02 ± 0.10) × 104 M-1 and (4.90 ± 0.11) × 104 M-1 at 298.15 K, for ALM and ALMG, respectively. The enthalpy vs temperature plot yielded negative standard molar heat capacity value, and a strong negative correlation between enthalpy and entropy terms was observed which indicates the enthalpy entropy compensation behavior in both systems. All these thermodynamic phenomena indicate that hydrophobic force is the key factor which is involved in the binding process. Moreover, the enhancement of thermal stability of DNA helix by ALM and ALMG fully agreed to the complexation of these molecules with DNA.
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Affiliation(s)
- Abhi Das
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Gopinatha Suresh Kumar
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Sanjay Dutta
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
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14
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Yuan L, Duan X, Zhang R, Zhang Y, Qu M. Aloe polysaccharide protects skin cells from UVB irradiation through Keap1/Nrf2/ARE signal pathway. J DERMATOL TREAT 2019; 31:300-308. [PMID: 30897007 DOI: 10.1080/09546634.2019.1591579] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The aim of this study was to investigate if aloe polysaccharide (AP) has the repairing effect on ultraviolet b (UVB) injured nerve cells. The study applied BALB/c female mice as animal model, and NFG-activated PC12 cells as cell model of skin nerve. The cell viability was detected by MTT assay, and cell apoptosis was detected by TUNEL (TdT-mediated dUTP nick-end labeling) and Annexin-V/PI assay, and cell-cycle status in different groups were observed via flow cytometry (FCM). Enzyme-linked immunosorbent assay (ELISA) was applied to analyze oxidative stress and anti-oxidative ability in each group. Real-time PCR and western blot were used to detect the expression levels of Bax, Bcl-2, Caspase-3, Cyclin D1, Keap1, Nrf2, GCLC, and GSTP1. The results showed obvious inhibition of cell viability and cell-cycle progression and promotion of cell apoptosis by UVB irradiation through inducing oxidative stress. In AP treated groups, cell viability and proliferation could be markedly improved and cell apoptosis inhibited with higher anti-oxidative capability and up-regulated expression of Keap1, Nrf2, GCLC, and GSTP1. It suggested that AP was able to repair UVB induced injury on NGF activated skin neural cell PC12, probably through Keap1/Nrf2/ARE signal pathway.
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Affiliation(s)
- Lingling Yuan
- Department of Dermatology, Dongzhimen Hospital, Beijing University of Traditional Chinese Medicine, Beijing, China
| | - Xingwu Duan
- Department of Dermatology, Dongzhimen Hospital, Beijing University of Traditional Chinese Medicine, Beijing, China
| | - Runtian Zhang
- Department of Dermatology, Dongzhimen Hospital, Beijing University of Traditional Chinese Medicine, Beijing, China
| | - Yunbi Zhang
- Department of Dermatology, Dongzhimen Hospital, Beijing University of Traditional Chinese Medicine, Beijing, China
| | - Muwen Qu
- Department of Anorectal Surgery, Guang'anmen Hospital of Chinese Academy of Chinese Medical Sciences, Beijing, China
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15
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Potshangbam AM, Polavarapu R, Rathore RS, Naresh D, Prabhu NP, Potshangbam N, Kumar P, Vindal V. MedPServer: A database for identification of therapeutic targets and novel leads pertaining to natural products. Chem Biol Drug Des 2018; 93:438-446. [PMID: 30381914 DOI: 10.1111/cbdd.13430] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 09/14/2018] [Accepted: 10/18/2018] [Indexed: 12/19/2022]
Abstract
Natural products have been the source of treatment for various human diseases from time immemorial. Interests in natural product-based scaffolds for the discovery of modern drugs have grown in recent years. However, research on exploring the traditional medicinal systems for modern therapeutics is severely limited due to our incomplete understanding of the therapeutic mechanism of action. One possible solution is to develop computational approaches, based on ligand- and structure-based screening tools, for fast and plausible target identification, leading to elucidation of the therapeutic mechanism. In the present work, we present two methods based on shape-based and pharmacophore search to predict targets of natural products and elucidate their mechanism, and to identify natural product-based leads. These methods were tested on an in-house developed database of medicinal plants that include information from a largely unexplored North-East region of India, known as one of the twelve mega biodiversity regions. However, depending on the choice of the lead molecules, any existing databases can be used for screening. MedPServer is an open access resource available at http://bif.uohyd.ac.in/medserver/.
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Affiliation(s)
- Angamba Meetei Potshangbam
- Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, India.,Department of Biotechnology, Manipur University, Imphal, India
| | - Raja Polavarapu
- Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Ravindranath Singh Rathore
- Bioinformatics Infrastructure Facility, University of Hyderabad, Hyderabad, India.,Department of Bioinformatics, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, India
| | - Damuka Naresh
- Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Nagu Prakash Prabhu
- Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | | | - Pravind Kumar
- Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Vaibhav Vindal
- Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, India.,Bioinformatics Infrastructure Facility, University of Hyderabad, Hyderabad, India
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16
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Zhang J, Guo L, Zhang Q, Liu K, Dong Z. Aloe emodin suppresses EGF‑induced neoplastic cell transformation by inhibiting the ERK/MSK1 and AKT/GSK3β signaling pathways. Mol Med Rep 2018; 18:5215-5220. [PMID: 30272294 DOI: 10.3892/mmr.2018.9517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 11/06/2017] [Indexed: 11/06/2022] Open
Abstract
Natural compounds which can block cell transformation due to potential for chemoprevention have received increased attention. The present study aimed to investigate whether aloe emodin, which is present in aloe latex or the roots of the Rheum palmatum L. are able to block epidermal growth factor (EGF)‑ and tissue plasminogen activator‑induced JB6 C141 cell transformation. The aloe emodin treatment was applied to the JB6 C141 cell neoplastic model. The toxicity of aloe emodin was determined. The present study detected the expression level of AKT serine/threonine kinase 1 (AKT), lysine‑tRNA ligase MSK1 (MSK1) and cyclin D1 using western blotting. The cell proliferation and cell cycle distribution were also monitored. And when 95‑maximal effective dose ranged between 1 and 15 µM, the cell death was evident. Aloe emodin‑treated cells had an impaired anchorage‑independent growth capability, leading to a dose‑dependent reduction of colony formation. Western blotting revealed that aloe emodin had a significant effect on phosphorylation of pyruvate dehydrogenase kinase 1 and glycogen synthase kinase 3β (GSK3β) and AKT was inhibited. The present study determined that the proliferation of JB6 C141 cells was reduced in a dose‑dependent manner and the effect may be associated with its inhibition of the G1/S cell cycle transition. Cyclin D1 transcriptional activity was reduced to 25%, 24 h following aloe emodin treatment. The protein expression of cyclin D1 was inhibited. The findings of the present study indicated that aloe emodin may be able to suppress neoplastic cell transformation by inhibiting the extracellular‑signal regulated kinase/MSK1 and AKT/GSK3β signaling pathways. It may be a potential natural compound for chemoprevention.
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Affiliation(s)
- Juan Zhang
- Department of Pathology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Lihua Guo
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Quanwu Zhang
- Department of Pathology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Kangdong Liu
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Ziming Dong
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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17
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Salehi B, Albayrak S, Antolak H, Kręgiel D, Pawlikowska E, Sharifi-Rad M, Uprety Y, Tsouh Fokou PV, Yousef Z, Amiruddin Zakaria Z, Varoni EM, Sharopov F, Martins N, Iriti M, Sharifi-Rad J. Aloe Genus Plants: From Farm to Food Applications and Phytopharmacotherapy. Int J Mol Sci 2018; 19:E2843. [PMID: 30235891 PMCID: PMC6163315 DOI: 10.3390/ijms19092843] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 09/14/2018] [Accepted: 09/15/2018] [Indexed: 12/20/2022] Open
Abstract
Aloe genus plants, distributed in Old World, are widely known and have been used for centuries as topical and oral therapeutic agents due to their health, beauty, medicinal, and skin care properties. Among the well-investigated Aloe species are A. arborescens, A. barbadensis, A. ferox, and A. vera. Today, they account among the most economically important medicinal plants and are commonly used in primary health treatment, where they play a pivotal role in the treatment of various types of diseases via the modulation of biochemical and molecular pathways, besides being a rich source of valuable phytochemicals. In the present review, we summarized the recent advances in botany, phytochemical composition, ethnobotanical uses, food preservation, and the preclinical and clinical efficacy of Aloe plants. These data will be helpful to provide future directions for the industrial and medicinal use of Aloe plants.
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Affiliation(s)
- Bahare Salehi
- Medical Ethics and Law Research Center, Shahid Beheshti University of Medical Sciences, Tehran 88777539, Iran.
- Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran 22439789, Iran.
| | - Sevil Albayrak
- Department of Biology, Science Faculty, Erciyes University, Kayseri 38039, Turkey.
| | - Hubert Antolak
- Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Science, Lodz University of Technology, Wolczanska 171/173, 90-924 Lodz, Poland.
| | - Dorota Kręgiel
- Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Science, Lodz University of Technology, Wolczanska 171/173, 90-924 Lodz, Poland.
| | - Ewelina Pawlikowska
- Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Science, Lodz University of Technology, Wolczanska 171/173, 90-924 Lodz, Poland.
| | - Mehdi Sharifi-Rad
- Department of Medical Parasitology, Zabol University of Medical Sciences, Zabol 61663-335, Iran.
| | - Yadav Uprety
- Research Centre for Applied Science and Technology (RECAST), Tribhuvan University, P.O. Box 1030 Kirtipur, Kathmandu, Nepal.
| | - Patrick Valere Tsouh Fokou
- Antimicrobial and Biocontrol Agents Unit, Department of Biochemistry, Faculty of Science, University of Yaounde 1, Ngoa Ekelle, Annex Fac. Sci, P.O. Box 812 Yaounde, Cameroon.
| | - Zubaida Yousef
- Department of Botany, Lahore College for Women University, Jail Road Lahore 54000, Pakistan.
| | - Zainul Amiruddin Zakaria
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia.
- Integrative Pharmacogenomics Institute (iPROMISE), Level 7, FF3 Building, Universiti Teknologi MARA, Puncak Alam 42300, Malaysia.
| | - Elena Maria Varoni
- Department of Biomedical, Surgical and Dental Sciences, Milan State University, via Beldiletto 1/3, 20100 Milan, Italy.
- National Interuniversity Consortium of Materials Science and Technology, via G. Giusti 9, 50121 Firenze, Italy.
| | - Farukh Sharopov
- Department of Pharmaceutical Technology, Avicenna Tajik State Medical University, Rudaki 139, Dushanbe 734003, Tajikistan.
| | - Natália Martins
- Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal.
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal.
| | - Marcello Iriti
- National Interuniversity Consortium of Materials Science and Technology, via G. Giusti 9, 50121 Firenze, Italy.
- Department of Agricultural and Environmental Sciences, Milan State University, via G. Celoria 2, 20133 Milan, Italy.
| | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran 11369, Iran.
- Department of Chemistry, Richardson College for the Environmental Science Complex, The University of Winnipeg, 599 Portage Avenue, Winnipeg, MB R3B 2G3, Canada.
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18
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Di Cesare Mannelli L, Piccolo M, Maione F, Ferraro MG, Irace C, De Feo V, Ghelardini C, Mascolo N. Tanshinones from Salvia miltiorrhiza Bunge revert chemotherapy-induced neuropathic pain and reduce glioblastoma cells malignancy. Biomed Pharmacother 2018; 105:1042-1049. [DOI: 10.1016/j.biopha.2018.06.047] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 06/12/2018] [Accepted: 06/12/2018] [Indexed: 12/28/2022] Open
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19
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Ma JW, Hung CM, Lin YC, Ho CT, Kao JY, Way TD. Aloe-emodin inhibits HER-2 expression through the downregulation of Y-box binding protein-1 in HER-2-overexpressing human breast cancer cells. Oncotarget 2018; 7:58915-58930. [PMID: 27391337 PMCID: PMC5312285 DOI: 10.18632/oncotarget.10410] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 06/12/2016] [Indexed: 12/12/2022] Open
Abstract
Human epidermal growth factor receptor-2 (HER-2)-positive breast cancer tends to be aggressive, highly metastatic, and drug resistant and spreads rapidly. Studies have indicated that emodin inhibits HER-2 expression. This study compared the HER-2-inhibitory effects of two compounds extracted from rhubarb roots: aloe-emodin (AE) and rhein. Our results indicated that AE exerted the most potent inhibitory effect on HER-2 expression. Treatment of HER-2-overexpressing breast cancer cells with AE reduced tumor initiation, cell migration, and cell invasion. AE was able to suppress YB-1 expression, further suppressing downstream HER-2 expression. AE suppressed YB-1 expression through the inhibition of Twist in HER-2-overexpressing breast cancer cells. Our data also found that AE inhibited cancer metastasis and cancer stem cells through the inhibition of EMT. Interestingly, AE suppressed YB-1 expression through the downregulation of the intracellular integrin-linked kinase (ILK)/protein kinase B (Akt)/mTOR signaling pathway in HER-2-overexpressing breast cancer cells. In vivo study showed the positive result of antitumor activity of AE in nude mice injected with human HER-2-overexpressing breast cancer cells. These findings suggest the possible application of AE in the treatment of HER-2-positive breast cancer.
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Affiliation(s)
- Jui-Wen Ma
- Institute of Biochemistry, College of Life Science, National Chung Hsing University, Taichung, Taiwan
| | - Chao-Ming Hung
- Department of General Surgery, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan.,School of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Ying-Chao Lin
- Division of Neurosurgery, Buddhist Tzu Chi General Hospital, Taichung Branch, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan.,Department of Medical Imaging and Radiological Science, Central Taiwan University of Science and Technology, Taichung, Taiwan
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, New Brunswick, New Jersey, USA
| | - Jung-Yie Kao
- Institute of Biochemistry, College of Life Science, National Chung Hsing University, Taichung, Taiwan
| | - Tzong-Der Way
- Department of Biological Science and Technology, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung, Taiwan.,Department of Health and Nutrition Biotechnology, College of Health Science, Asia University, Taichung, Taiwan
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20
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Trybus W, Król G, Trybus E, Stachurska A, Kopacz- Bednarska A, Król T. Aloe-Emodin Influence on the Lysosomal Compartment of Hela Cells. Asian Pac J Cancer Prev 2017; 18:3273-3279. [PMID: 29286219 PMCID: PMC5980883 DOI: 10.22034/apjcp.2017.18.12.3273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Background: Aloe-emodin belongs to the group of anthraquinones having extremely high biological activity. The aim of this study was to evaluate the range of morphological and biochemical changes in HeLa cells treated with aloe-emodin, especially with regard to the lysosomal compartment. Methods: Marking of lysosomes was performed with neutral red staining for conventional light microscopy and acridine orange staining for confocal microscopy. To evaluate ctivity of lysosomal enzymes and permeability of the lysosomal membrane, spectrophotometric techniques were employed. Results: Aloe-emodin caused increased permeability of lysosomal membranes in HeLa cells, expressed inter alia by extinction of the orange color of acridine orange (lysosomal marker) and in reduction of neutral red uptake by lysosomes. These changes are accompanied by release of cathepsins from the interior of the lysosomes with a simultaneous highly significant increase in their activity in the cytoplasm. Conclusion: The results indicate that aloeemodin can activate lysosomal pathway-dependent apoptosis in HeLa cells.
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Affiliation(s)
- Wojciech Trybus
- Department of Cell Biology and Electron Microscopy, Institute of Biology, The Jan Kochanowski University, Świętokrzyska 15, 25-406 Kielce, Poland.
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21
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Pharmacokinetics and pharmacodynamics of rhubarb anthraquinones extract in normal and disease rats. Biomed Pharmacother 2017; 91:425-435. [DOI: 10.1016/j.biopha.2017.04.109] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 04/21/2017] [Accepted: 04/24/2017] [Indexed: 11/23/2022] Open
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22
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Dong X, Fu J, Yin X, Yang C, Ni J. Aloe-emodin Induces Apoptosis in Human Liver HL-7702 Cells through Fas Death Pathway and the Mitochondrial Pathway by Generating Reactive Oxygen Species. Phytother Res 2017; 31:927-936. [DOI: 10.1002/ptr.5820] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/13/2017] [Accepted: 04/01/2017] [Indexed: 01/08/2023]
Affiliation(s)
- Xiaoxv Dong
- School of Chinese Materia Medica; Beijing University of Chinese Medicine; Beijing 100102 PR China
| | - Jing Fu
- School of Chinese Materia Medica; Beijing University of Chinese Medicine; Beijing 100102 PR China
| | - Xingbin Yin
- School of Chinese Materia Medica; Beijing University of Chinese Medicine; Beijing 100102 PR China
| | - Chunjing Yang
- School of Chinese Materia Medica; Beijing University of Chinese Medicine; Beijing 100102 PR China
| | - Jian Ni
- School of Chinese Materia Medica; Beijing University of Chinese Medicine; Beijing 100102 PR China
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23
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Zhu X, Jiang X, Li A, Zhao Z, Li S. S-Allylmercaptocysteine Attenuates Cisplatin-Induced Nephrotoxicity through Suppression of Apoptosis, Oxidative Stress, and Inflammation. Nutrients 2017; 9:nu9020166. [PMID: 28230744 PMCID: PMC5331597 DOI: 10.3390/nu9020166] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 01/18/2017] [Indexed: 12/27/2022] Open
Abstract
Cisplatin is a potent chemotherapeutic agent, but its clinical usage is limited by nephrotoxicity. S-allylmercaptocysteine (SAMC), one of the water-soluble organosulfur garlic derivatives, has antioxidant and anti-inflammatory properties and plays an important role in protecting cells from apoptosis. This study aims to examine the protective effects of SAMC on cisplatin nephrotoxicity and to explore the mechanism of its renoprotection. Rats were treated with cisplatin with or without pre-treatment with SAMC. Renal function, histological change, oxidative stress markers and antioxidant enzyme activities were investigated. Apoptotic marker, nuclearfactor (NF)-κB activity, expression of nuclear factor erythroid 2-related factor 2 (Nrf2), NAD(P)H:quinone oxidoreductase 1 (NQO1) and inflammatory cytokines were also examined. The effect of SAMC on cell viability and apoptosis was examined in cultured human kidney (HK-2) cells. SAMC was confirmed to significantly attenuate cisplatin-induced renal damage by using histological pathology and molecular biological method. Pre-treatment with SAMC reduced NF-κB activity, up-regulated Nrf2 and NQO1 expression and down-regulated inflammatory cytokine levels after cisplatin administration. Cisplatin-induced apoptosis in HK-2 cells was significantly attenuated by SAMC. Thus our results suggest that SAMC could be a potential therapeutic agent in the treatment of the cisplatin-induced nephrotoxicity through its anti-apoptotic, anti-oxidant and anti-inflammatory effects.
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Affiliation(s)
- Xiaosong Zhu
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
| | - Xiaoyan Jiang
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
| | - Ang Li
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
| | - Zhongxi Zhao
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
- Shandong Provincial Key Laboratory of Mucosal and Transdermal Drug Delivery Technologies, Shandong Academy of Pharmaceutical Sciences, 989 Xinluo Street, Jinan 250101, China.
| | - Siying Li
- School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China.
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24
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Li X, Wang H, Wang J, Chen Y, Yin X, Shi G, Li H, Hu Z, Liang X. Emodin enhances cisplatin-induced cytotoxicity in human bladder cancer cells through ROS elevation and MRP1 downregulation. BMC Cancer 2016; 16:578. [PMID: 27485374 PMCID: PMC4971704 DOI: 10.1186/s12885-016-2640-3] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 07/27/2016] [Indexed: 12/12/2022] Open
Abstract
Background Chemoresistance is one of the most leading causes for tumor progression and recurrence of bladder cancer. Reactive oxygen species (ROS) plays a key role in the chemosensitivity of cancer cells. In the present study, emodin (1,3,8-trihydroxy-6-methylanthraquinone) was applied as a ROS generator in combination with cisplatin in T24 and J82 human bladder cancer cells. Methods Cell viability and apoptosis rate of different treatment groups were detected by 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) and flow cytometry (FCM). The expression of transporters was measured at both the transcription and translation levels using PCR and western blotting. In vitro findings were confirmed by in vivo experiments using tumor-bearing mice. The expression of multidrug resistance-associated protein 1 (MRP1) in tumour tissue was measured using immunohistochemistry and side effects of the emodin/cisplatin co-treatment were investigated by histological examination. Results Emodin increased the cellular ROS level and effectively enhanced the cisplatin-induced cytotoxicity of T24 and J82 human bladder cancer cells through decreasing glutathione-cisplatin (GSH-cisplatin) conjugates. It blocked the chemoresistance of T24 and J82 cells to cisplatin through suppressing the expression of MRP1. This effect was specific in T24 and J82 cells but not in HCV-29 normal bladder epithelial cells. Consistent with in vitro experiments, emodin/cisplatin co-treatment increased the cell apoptosis and repressed the MRP1 expression in xenograft tumors, and without obvious systemic toxicity. Conclusions This study revealed that emodin could increase the cisplatin-induced cytotoxicity against T24 and J82 cells via elevating the cellular ROS level and downregulating MRP1 expression. We suggest that emodin could serve as an effective adjuvant agent for the cisplatin-based chemotherapy of bladder cancer. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2640-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xinxing Li
- Department of General Surgery, Changzheng Hospital, The Second Military Medical University, 145 S. Fengyang Road, Shanghai, 200003, China.
| | - Haolu Wang
- Therapeutics Research Centre, School of Medicine, The University of Queensland, Brisbane, QLD, 4012, Australia
| | - Juan Wang
- Department of General Surgery, Changzheng Hospital, The Second Military Medical University, 145 S. Fengyang Road, Shanghai, 200003, China
| | - Yuying Chen
- Department of Cell Biology, Key Laboratory of the Education Ministry for Cell Differentiation and Apoptosis, Institutes of Medical Sciences, Shanghai Jiao Tong University School of Medicine, 280 S. Chongqing Road, Shanghai, 200025, China
| | - Xiaobin Yin
- Division of Surgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, 1630 S. Dongfang Road, Shanghai, 200127, China
| | - Guiying Shi
- Department of Cell Biology, Key Laboratory of the Education Ministry for Cell Differentiation and Apoptosis, Institutes of Medical Sciences, Shanghai Jiao Tong University School of Medicine, 280 S. Chongqing Road, Shanghai, 200025, China
| | - Hui Li
- Department of Cell Biology, Key Laboratory of the Education Ministry for Cell Differentiation and Apoptosis, Institutes of Medical Sciences, Shanghai Jiao Tong University School of Medicine, 280 S. Chongqing Road, Shanghai, 200025, China
| | - Zhiqian Hu
- Department of General Surgery, Changzheng Hospital, The Second Military Medical University, 145 S. Fengyang Road, Shanghai, 200003, China.
| | - Xiaowen Liang
- Therapeutics Research Centre, School of Medicine, The University of Queensland, Brisbane, QLD, 4012, Australia
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Balachandran V, Karpagam V, Revathi B, Kavimani M, Ilango G. Conformational stability, spectroscopic and computational studies, HOMO-LUMO, NBO, ESP analysis, thermodynamic parameters of natural bioactive compound with anticancer potential of 2-(hydroxymethyl)anthraquinone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 150:631-640. [PMID: 26093112 DOI: 10.1016/j.saa.2015.06.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 07/12/2014] [Accepted: 06/01/2015] [Indexed: 06/04/2023]
Abstract
Natural product drugs play a dominant role in pharmaceutical care. Nature is an attractive source of new therapeutic candidate compounds as a tremendous chemical diversity is found in millions of species of plants, animals, marine organism and micro-organism. A antifungal activity against important opportunist micro-organism and against those involved in superficial mycosis, all from nosocomial origin. The acute in vitro cytotoxicity evaluation of each anthraquinone (AQ) isolated from these bioactive extracts, on a mammalian eukaryotic cell line (Vero cells), allowed us to establish the non-cytotoxic concentration range, which was used to evaluate the anti-microbial effect. A comprehensive ab initio calculation using the DFT/6-31+G(d) level theory showed that 2-(hydroxymethyl)anthraquinone can exist in four possible conformations, which can interchange through the OH group on the five-membered ring. Density functional theory calculations were used to predict the vibrational frequencies and to help in normal mode, assignments. Furthermore, a natural bond orbital analysis was performed describing each hydrogen bond as donor accepter interaction. The Fourier transform infrared spectra (4000-400 cm(-1)) and the Fourier transform Raman spectra (3500-100 cm(-1)) of the HMA in the solid space have been recorded. The calculated HOMO and LUMO energies show that charge transfer occurs within the molecule. The calculated ESP contour map shows the electrophilic and nucleophilic region of the molecule.
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Affiliation(s)
- V Balachandran
- Centre for Research, Department of Physics, A.A. Government Arts College, Musiri, Tiruchirappalli 621211, India.
| | - V Karpagam
- Department of Physics, Sri Saradha College for Women, Perambalur 621212, India
| | - B Revathi
- Centre for Research, Department of Physics, A.A. Government Arts College, Musiri, Tiruchirappalli 621211, India
| | - M Kavimani
- Centre for Research, Department of Physics, A.A. Government Arts College, Musiri, Tiruchirappalli 621211, India
| | - G Ilango
- Department of Physics, M.I.E.T. Engineering College, Tiruchirappalli 620 007, India
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Kim SJ, Park C, Lee JN, Lim H, Hong GY, Moon SK, Lim DJ, Choe SK, Park R. Erdosteine protects HEI-OC1 auditory cells from cisplatin toxicity through suppression of inflammatory cytokines and induction of Nrf2 target proteins. Toxicol Appl Pharmacol 2015; 288:192-202. [DOI: 10.1016/j.taap.2015.07.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 06/30/2015] [Accepted: 07/16/2015] [Indexed: 12/20/2022]
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Calistri A, Munegato D, Toffoletto M, Celestino M, Franchin E, Comin A, Sartori E, Salata C, Parolin C, Palù G. Functional Interaction Between the ESCRT-I Component TSG101 and the HSV-1 Tegument Ubiquitin Specific Protease. J Cell Physiol 2015; 230:1794-806. [PMID: 25510868 DOI: 10.1002/jcp.24890] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 12/11/2014] [Indexed: 02/01/2023]
Abstract
Similar to phosphorylation, transient conjugation of ubiquitin to target proteins (ubiquitination) mediated by the concerted action of ubiquitin ligases and de-ubiquitinating enzymes (DUBs) can affect substrate function. As obligate intracellular parasites, viruses rely on different cellular pathways for their own replication and the well conserved ubiquitin conjugating/de-conjugating system is not an exception. Viruses not only usurp the host proteins involved in the ubiquitination/de-ubiquitination process, but they also encode their own ubiquitin ligases and DUBs. Here we report that an N-terminal variant of the herpes simplex virus (HSV) type-1 large tegument protein VP1/2 (VP1/2(1-767)), encompassing an active DUB domain (herpesvirus tegument ubiquitin specific protease, htUSP), and TSG101, a component of the endosomal sorting complex required for transport (ESCRT)-I, functionally interact. In particular, VP1/2(1-767) modulates TSG101 ubiquitination and influences its intracellular distribution. Given the role played by the ESCRT machinery in crucial steps of both cellular pathways and viral life cycle, the identification of TSG101 as a cellular target for the HSV-1 specific de-ubiquitinating enzyme contributes to the clarification of the still under debate function of viral encoded DUBs highly conserved throughout the Herpesviridae family.
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Affiliation(s)
- A Calistri
- Department of Molecular Medicine, University of Padova, Padova, Italy
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Abstract
PURPOSE Although an anti-tumor effect of emodin has been reported before, its effect on human gynecological cancer cells has so far not been studied. Here, we assessed the effect of emodin on cervical cancer-derived (Hela), choriocarcinoma-derived (JAR) and ovarian cancer-derived (HO-8910) cells, and investigated the possible underlying molecular and cellular mechanisms. METHODS AND RESULTS The respective cells were treated with 0, 5, 10 or 15 μM emodin for 72 h. Subsequently, MTT and Transwell in vitro migration assays revealed that emodin significantly decreased the viability and invasive capacity of the gynecological cancer-derived cells tested. We found that emodin induced apoptosis and significantly decreased mitochondrial membrane potential and ATP release in these cells. We also found that emodin may exert its apoptotic effects via regulating the activity of caspase-9 and the expression of cleaved-caspase-3. Moreover, we found that emodin induced a cell cycle arrest at the G0/G1 phase, possibly through down-regulating the key cell cycle regulators Cyclin D and Cyclin E. Interestingly, emodin also led to autophagic cell death, as revealed by increased MAP LC3 expression, a marker of the autophagosome, and decreased expression of the autophagy regulators Beclin-1 and Atg12-Atg5. Finally, we found that the protein levels of both VEGF and VEGFR-2 were significantly decreased in emodin-treated cells, suggesting an anti-angiogenic effect of emodin on gynecological cancer-derived cells. CONCLUSIONS Our results suggest that emodin exhibits an anti-tumor effect on gynecological cancer-derived cells, possibly through multiple mechanisms including the induction of apoptosis and autophagy, the arrest of the cell cycle, and the inhibition of angiogenesis. Our findings may provide a basis for the design of potential emodin-based strategies for the treatment of gynecological tumors.
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Chen R, Wang S, Zhang J, Chen M, Wang Y. Aloe-emodin loaded solid lipid nanoparticles: formulation design andin vitroanti-cancer study. Drug Deliv 2014; 22:666-74. [DOI: 10.3109/10717544.2014.882446] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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Mulakayala C, Banaganapalli B, Mulakayala N, Pulaganti M, C M A, Chitta SK. Design and evaluation of new chemotherapeutics of aloe-emodin (AE) against the deadly cancer disease: an in silico study. J Chem Biol 2013; 6:141-53. [PMID: 24432130 DOI: 10.1007/s12154-013-0097-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 05/09/2013] [Indexed: 10/26/2022] Open
Abstract
The Bcl-2 family proteins include pro- and antiapoptotic factors acting as critical arbiters of apoptotic cell death decisions in most circumstances. Evasion of apoptosis is one of the hallmarks of cancer, relevant to tumorigenesis as well as resistance to cytotoxic drugs, and deregulation of Bcl-2 proteins was observed in many cancers. Since Bax-mediated induction of apoptosis is a crucial mechanism in cancerous cells, we aimed at conducting in silico analysis on Bax in order to predict the possible interactions for anticancer agents. The present report depicts the binding mode of aloe-emodin and its structurally modified derivatives onto Bax. The structural information about the binding site of Bax for docked compounds obtained from this study could aid in screening and designing new anticancer agents or selective inhibitors for chemotherapy against Bax.
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Affiliation(s)
- Chaitanya Mulakayala
- DBT-Bioinforamtics Infrastructure Facility (BIF), Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, 515003 AP India
| | - Babajan Banaganapalli
- Department of Biotechnology and Bioinformatics, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Naveen Mulakayala
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad, campus Gachibowli, Hyderabad, India
| | - Madhusudana Pulaganti
- DBT-Bioinforamtics Infrastructure Facility (BIF), Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, 515003 AP India
| | - Anuradha C M
- Department of Biotechnology, Sri Krishnadevaraya University, Anantapur, AP India 515001
| | - Suresh Kumar Chitta
- DBT-Bioinforamtics Infrastructure Facility (BIF), Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, 515003 AP India
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Wang T, Yin X, Lu Y, Shan W, Xiong S. Formulation, antileukemia mechanism, pharmacokinetics, and biodistribution of a novel liposomal emodin. Int J Nanomedicine 2012; 7:2325-37. [PMID: 22661889 PMCID: PMC3357979 DOI: 10.2147/ijn.s31029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Emodin is a multifunctional Chinese traditional medicine with poor water solubility. D-α-tocopheryl polyethylene glycol 1000 succinate (TPGS) is a pegylated vitamin E derivate. In this study, a novel liposomal-emodin-conjugating TPGS was formulated and compared with methoxypolyethyleneglycol 2000-derivatized distearoyl-phosphatidylethanolamine (mPEG2000–DSPE) liposomal emodin. TPGS improved the encapsulation efficiency and stability of emodin egg phosphatidylcholine/cholesterol liposomes. A high encapsulation efficiency of 95.2% ± 3.0%, particle size of 121.1 ± 44.9 nm, spherical ultrastructure, and sustained in vitro release of TPGS liposomal emodin were observed; these were similar to mPEG2000–DSPE liposomes. Only the zeta potential of −13.1 ± 2.7 mV was significantly different to that for mPEG2000–DSPE liposomes. Compared to mPEG2000–DSPE liposomes, TPGS liposomes improved the cytotoxicity of emodin on leukemia cells by regulating the protein levels of myeloid cell leukemia 1 (Mcl-1), B-cell lymphoma-2 (Bcl-2) and Bcl-2-associated X protein, which was further enhanced by transferrin. TPGS liposomes prolonged the circulation time of emodin in the blood, with the area under the concentration–time curve (AUC) 1.7 times larger than for free emodin and 0.91 times larger than for mPEG2000–DSPE liposomes. In addition, TPGS liposomes showed higher AUC for emodin in the lung and kidney than for mPEG2000–DSPE liposomes, and both liposomes elevated the amount of emodin in the heart. Overall, TPGS is a pegylated agent that could potentially be used to compose a stable liposomal emodin with enhanced therapeutics.
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Affiliation(s)
- Tiechuang Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, People's Republic of China
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Aloe emodin inhibits colon cancer cell migration/angiogenesis by downregulating MMP-2/9, RhoB and VEGF via reduced DNA binding activity of NF-κB. Eur J Pharm Sci 2012; 45:581-91. [DOI: 10.1016/j.ejps.2011.12.012] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 12/09/2011] [Accepted: 12/21/2011] [Indexed: 02/02/2023]
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Shia CS, Tsai SY, Lin JC, Li ML, Ko MH, Chao PDL, Huang YC, Hou YC. Steady-state pharmacokinetics and tissue distribution of anthraquinones of Rhei Rhizoma in rats. JOURNAL OF ETHNOPHARMACOLOGY 2011; 137:1388-1394. [PMID: 21855620 DOI: 10.1016/j.jep.2011.08.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 08/02/2011] [Accepted: 08/02/2011] [Indexed: 05/31/2023]
Abstract
AIM OF THE STUDY Rhei Rhizoma, the rhizome of Rheum palmatum L. (RP), is a popular herb in clinical Chinese medicine. RP is abundant in polyphenolic anthraquinones, which have been reported to show various beneficial bioactivities. This study investigated the pharmacokinetics and tissue distribution of anthraquinones following seven-dose administration of RP decoction to rats. MATERIALS AND METHODS Six Sprague-Dawley rats were given 2.0 g/kg of RP twice daily for seven doses and blood samples were collected at designated time after the 7th dose. Another six rats were sacrificed at 30 min after the 7th dose and organs including liver, kidney, lung and brain were collected. Serum and tissue specimens were assayed by HPLC before and after hydrolysis with β-glucuronidase and sulfatase, respectively. RESULTS Pharmacokinetic analysis indicated that the anthraquinones in serum mainly presented as glucuronides/sulfates and contained higher ratio of sulfates when compared with single-dose administration of RP. Contrary to the finding in serum, tissue analysis discovered mainly free form of anthraquinone in most organs assayed, such as aloe-emodin and rhein in kidney, liver, lung; emodin in liver, lung; trace of chrysophanol in kidney and liver. In all brains, neither free forms nor their glucuronides/sulfates have been detected. CONCLUSIONS The glucuronides/sulfates of anthraquinones were the major forms in bloodstream, whereas the free forms of most anthraquinones were predominant in kidney and liver.
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Affiliation(s)
- Chi-Sheng Shia
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung, Taiwan
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Verma A, Gupta AK, Kumar A, Khan PK. Cytogenetic toxicity ofAloe vera(a medicinal plant). Drug Chem Toxicol 2011; 35:32-5. [DOI: 10.3109/01480545.2011.567273] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Bian C, Zhang L, Xiong H, Zhang X, Wang S. Electrochemical Behavior of Herbal Antitumor Drug Aloe-Emodin at Carbon-Coated Nickel Magnetic Nanoparticles Modified Glassy Carbon Electrode. ELECTROANAL 2010. [DOI: 10.1002/elan.201000211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Lin ML, Lu YC, Chung JG, Wang SG, Lin HT, Kang SE, Tang CH, Ko JL, Chen SS. Down-regulation of MMP-2 through the p38 MAPK-NF-κB-dependent pathway by aloe-emodin leads to inhibition of nasopharyngeal carcinoma cell invasion. Mol Carcinog 2010; 49:783-97. [DOI: 10.1002/mc.20652] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Lin KY, Uen YH. Aloe-emodin, an anthraquinone, in vitro inhibits proliferation and induces apoptosis in human colon carcinoma cells. Oncol Lett 2010; 1:541-547. [PMID: 22966340 DOI: 10.3892/ol_00000096] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Accepted: 02/05/2010] [Indexed: 12/21/2022] Open
Abstract
The present study aimed to investigate the anticancer effect of aloe-emodin, an anthraquinone compound present in the leaves of Aloe vera, on two human colon carcinoma cell lines, DLD-1 and WiDr. Colon carcinoma cells were treated with various concentrations of aloe-emodin for different durations. Cell viability was measured by sodium 3'-[1-(phenylamino-carbonyl)-3,4-tetrazolium]-bis(4-methoxy-6-nitro) benzene-sulfonic acid hydrate assay. DNA fragmentation was analyzed by agarose gel electrophoresis. Nuclear shrinkage was visualized by Hoechst 33258 staining. Western blotting was used to indicate the release of apoptosis-inducing factor and cytochrome c from mitochondria and the phosphorylation of Bid. Caspase-3 and casein kinase II activities were measured by the respective assays. Cell viability analyses showed that aloe-emodin induced cell death in a dose- and time-dependent manner. Notably, the WiDr cells were more sensitive to aloe-emodin than the DLD-1 cells. Aloe-emodin caused the release of apoptosis-inducing factor and cytochrome c from mitochondria, followed by activation of caspase-3 leading to DNA fragmentation, nuclear shrinkage and apoptosis. In addition, exposure of colon carcinoma cells to aloe-emodin suppressed the casein kinase II activity in a time-dependent manner and was accompanied by a reduced phosphorylation of Bid, a downstream substrate of casein kinase II and a pro-apoptotic molecule. These findings showed that the inhibition of casein kinase II activity, the release of apoptosis-inducing factor and cytochrome c, and the caspase-3 activation are involved in aloe-emodin-mediated apoptosis in colon carcinoma cells.
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Affiliation(s)
- Kai-Yuan Lin
- Department of Medical Research, Chi-Mei Medical Center, 901 Chung-Hua Road, Yung-Kang City, Tainan 710
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Apoptosis effect of Sinularia leptoclados, S. depressan and S. inflate extracts in human oral squamous cell carcinomas. J Taiwan Inst Chem Eng 2010. [DOI: 10.1016/j.jtice.2009.05.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Chou TH, Liang CH. The Molecular Effects of Aloe-Emodin (AE)/Liposome-AE on Human Nonmelanoma Skin Cancer Cells and Skin Permeation. Chem Res Toxicol 2009; 22:2017-28. [DOI: 10.1021/tx900318a] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tzung-Han Chou
- Department of Cosmetic Science, Chia Nan University of Pharmacy and Science, 60 Erh-Jen Road, Section 1, Pao-An, Jen-Te Hsiang, Tainan 717, Taiwan
| | - Chia-Hua Liang
- Department of Cosmetic Science, Chia Nan University of Pharmacy and Science, 60 Erh-Jen Road, Section 1, Pao-An, Jen-Te Hsiang, Tainan 717, Taiwan
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Salata C, Curtarello M, Calistri A, Sartori E, Sette P, de Bernard M, Parolin C, Palù G. vOX2 glycoprotein of human herpesvirus 8 modulates human primary macrophages activity. J Cell Physiol 2009; 219:698-706. [PMID: 19229882 DOI: 10.1002/jcp.21722] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Human herpesvirus 8 (HHV-8) is a lymphotropic herpesvirus linked to several disorders such as Kaposi's sarcoma, primary effusion lymphoma and multicentric Castleman's disease. Several HHV-8 proteins regulate host innate and adaptive immune response; in particular, orfK14 is expressed as an immediate early gene during the viral lytic cycle and encodes a surface glycoprotein (vOX2), significantly homologous to the cellular OX2, which delivers inhibitory signals to macrophages. Although it has been suggested that vOX2 may down-regulate basophil and neutrophil functions, its role in macrophages, a cell type lytically infected by HHV-8 in vivo, is still controversial. Therefore, we investigated the effect of vOX2 expression in human primary monocyte-derived macrophages (MDMs). In this report, we demonstrate that vOX2-expressing MDMs in basal conditions are induced to produce inflammatory cytokines and display higher phagocytic activity with respect to mock cells. By contrast, an opposite effect is exhibited by vOX2 in MDMs undergoing IFN-gamma-activation, with a down-modulation of the cytokine production and phagocytic activity. Moreover, we observed that, when MDMs are co-cultured with vOX2-expressing cells, the inflammatory cytokine release is increased, independently from the MDM activation state. Interestingly, we could correlate our results with the mRNA transcript level of the vOX2 cellular CD200R receptor. Finally, we demonstrate a down-regulation of the MHC class I and class II molecules on the cell surface of vOX2-transduced MDMs. Our results provide new insights into the immunomodulatory effects of HHV-8 vOX2 protein. J. Cell. Physiol. 219: 698-706, 2009. (c) 2009 Wiley-Liss, Inc.
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Affiliation(s)
- Cristiano Salata
- Division of Microbiology and Virology, Department of Histology, Microbiology and Medical Biotechnologies, University of Padova, Padova, Italy
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Pifithrin-α protects against DNA damage-induced apoptosis downstream of mitochondria independent of p53. Cell Death Differ 2009; 16:869-78. [DOI: 10.1038/cdd.2009.17] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Ulbricht C, Armstrong J, Basch E, Basch S, Bent S, Dacey C, Dalton S, Foppa I, Giese N, Hammerness P, Kirkwood C, Sollars D, Tanguay-Colucci S, Weissner W. An evidence-based systematic review of Aloe vera by the natural standard research collaboration. ACTA ACUST UNITED AC 2008; 7:279-323. [PMID: 18928148 DOI: 10.1080/15228940802153339] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An evidence-based systematic review including written and statistical analysis of scientific literature, expert opinion, folkloric precedent, history, pharmacology, kinetics/dynamics, interactions, adverse effects, toxicology, and dosing.
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Wu SJ, Ng LT. MAPK inhibitors and pifithrin-alpha block cinnamaldehyde-induced apoptosis in human PLC/PRF/5 cells. Food Chem Toxicol 2007; 45:2446-53. [PMID: 17673346 DOI: 10.1016/j.fct.2007.05.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2006] [Revised: 01/10/2007] [Accepted: 05/23/2007] [Indexed: 11/17/2022]
Abstract
Cinnamaldehyde (Cin) has been shown to be effective in inducing apoptotic cell death in a number of human cancer cells. The aim of this study was to investigate the effect of pifithrin-alpha (PFTalpha; a specific p53 inhibitor) and mitogen-activated protein kinases (MAPKs) inhibitors [namely SP600125 (a specific JNK inhibitor), SB203580 (a specific p38 inhibitor) and PD98059 (a specific ERK inhibitor)] on apoptotic signaling transduction mechanism induced by Cin in human hepatoma PLC/PRF/5 (CD95-negative) cells. Using XTT assay, Cin exhibited a powerful cytotoxic effect and apoptotic induction in PLC/PRF/5 cells. Apoptosis was elicited when cells were treated with 1 microM Cin as characterized by morphological changes and the appearance of phosphatidylserine on the outer surface of the plasma membrane. Cin down-regulated the expression of Bcl-(XL), up-regulated mutant p53 and Bax proteins and promoted caspase-3 to active forms, as well as cleaving poly (ADP-ribose) polymerase (PARP) in a time-dependent pattern. This could be supported by the activation and phosphorylation of MAPKs, including JNK, ERK and p38 kinases. Pre-incubation with PFTalpha and specific MAPK inhibitors significantly diminished the effect of Cin-induced apoptosis. The activities of anti-apoptotic (Bcl-(XL)) and pro-apoptotic (Bax) proteins were remarkably affected by PFTalpha and PD98059 pre-treatment. PFTalpha effectively blocked PARP cleavage in cells treated with Cin, and also markedly prevented the phosphorylation of JNK, p38 and ERK proteins. These results suggest that p53 induction and MAPK signaling pathways are required for Cin-mediated apoptosis in PLC/PRF/5 cells.
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Affiliation(s)
- Shu-Jing Wu
- Department of Nutritional Health, Chia-Nan University of Pharmacy and Science, Tainan, Taiwan
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Buenz EJ. Aloin induces apoptosis in Jurkat cells. Toxicol In Vitro 2007; 22:422-9. [PMID: 18068945 DOI: 10.1016/j.tiv.2007.10.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2007] [Revised: 10/09/2007] [Accepted: 10/24/2007] [Indexed: 12/31/2022]
Abstract
Aloe is widely used as a dietary supplement. However, there are continuing concerns over the toxicity and the purity of aloe-based products. The primary class of compounds responsible for aloe-induced toxicity are anthraquinones. One of these, aloe-emodin, has been extensively investigated for apoptosis inducing effects. Conversely, the precursor to aloe-emodin, aloin, has been subjected to only minimal investigation of any cytotoxic effects. Jurkat T cells, an established model for the study of compound toxicity, were used to evaluate the effect of aloin on cell viability. Cells were analyzed using flow cytometry and microscopy for cell size and granularity, cell membrane integrity, mitochondrial membrane potential, and cell cycle profile. Treatment with aloin resulted in a reduction in cell size, compromised membrane integrity, and loss of mitochondrial membrane potential in a dose-dependent manner. Additionally, treatment with aloin resulted in alteration of the cell cycle, specifically a block at G2/M phase. Importantly, the loss of cell membrane integrity was preceded by a loss of mitochondrial membrane potential, suggesting a mitochondrial-dependent pathway for aloin-induced apoptosis. These observations provide insight into the potential mechanisms of aloin-induced toxicity and thus, perhaps, aloe preparation-induced toxicity. Furthermore, because of the concern over the safety of aloe-based supplements, this work suggests that aloe supplements not containing aloin may be safer than aloe supplements containing aloin, and that aloin should be considered in addition to concentrations of aloe-emodin.
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Affiliation(s)
- Eric J Buenz
- BioSciential, LLC, PO Box 634, Rochester, MN 55903, USA.
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Chen SH, Lin KY, Chang CC, Fang CL, Lin CP. Aloe-emodin-induced apoptosis in human gastric carcinoma cells. Food Chem Toxicol 2007; 45:2296-303. [PMID: 17637488 DOI: 10.1016/j.fct.2007.06.005] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2007] [Revised: 05/10/2007] [Accepted: 06/05/2007] [Indexed: 02/01/2023]
Abstract
The purpose of this study was to investigate the anticancer effect of aloe-emodin, an anthraquinone compound present in the leaves of Aloe vera, on two distinct human gastric carcinoma cell lines, AGS and NCI-N87. We demonstrate that aloe-emodin induced cell death in a dose- and time-dependent manner. Noteworthy is that the AGS cells were generally more sensitive than the NCI-N87 cells. Aloe-emodin caused the release of apoptosis-inducing factor and cytochrome c from mitochondria, followed by the activation of caspase-3, leading to nuclear shrinkage and apoptosis. In addition, exposure to aloe-emodin suppressed the casein kinase II activity in a time-dependent manner and was accompanied by a reduced phosphorylation of Bid, a downstream substrate of casein kinase II and a pro-apoptotic molecule. These preclinical studies suggest that aloe-emodin represents a suitable and novel chemotherapeutic drug candidate for the treatment of human gastric carcinoma.
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Affiliation(s)
- Sheng-Hsuan Chen
- Division of Gastroenterology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan.
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Harhaji L, Mijatovic S, Maksimovic-Ivanic D, Popadic D, Isakovic A, Todorovic-Markovic B, Trajkovic V. Aloe emodin inhibits the cytotoxic action of tumor necrosis factor. Eur J Pharmacol 2007; 568:248-59. [PMID: 17531219 DOI: 10.1016/j.ejphar.2007.04.029] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2006] [Revised: 04/05/2007] [Accepted: 04/12/2007] [Indexed: 12/30/2022]
Abstract
We demonstrate the capacity of an herbal anthraquinone aloe emodin to reduce the cytotoxicity of the proinflammatory cytokine tumor necrosis factor (TNF) towards L929 mouse fibrosarcoma and U251 human glioma cell lines. Aloe emodin inhibited both TNF-induced cell necrosis and apoptosis, but it did not reduce cell death induced by UV radiation or hydrogen peroxide. Aloe emodin inhibited both basal and TNF-triggered activation of extracellular signal-regulated kinase (ERK), and a selective blockade of ERK activation mimicked the cytoprotective action of the drug. On the other hand, aloe emodin did not affect TNF-induced activation of p38 mitogen-activated protein kinase or generation of reactive oxygen species. The combination of aloe emodin and TNF caused an intracellular appearance of acidified autophagic vesicles, and the inhibition of autophagy with bafilomycin or 3-methyladenine efficiently blocked the cytoprotective action of aloe emodin. These data indicate that aloe emodin could prevent TNF-triggered cell death through mechanisms involving induction of autophagy and blockade of ERK activation.
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Affiliation(s)
- Ljubica Harhaji
- Institute for Biological Research, Department of Immunology, Belgrade, Serbia and Montenegro
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48
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Anti-genotoxic effect of aloe vera gelR on the mutagenic action of ethyl methanesulfonate. ARCH BIOL SCI 2007. [DOI: 10.2298/abs0703223s] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The antimutagenic effect of aloe vera gelR was investigated using the Drosophila sex-linked recessive lethal test (or SLRL test). In this assay, 3-day-old adults were treated with a direct-acting mutagen - ethyl methanesulfonate (EMS), which was the positive control. The other group of individuals of the same age was firstly treated with EMS, and then with aloe vera gelR (co-treatment). When co-treatment experiments with aloe were carried out, it was effective in reducing genotoxicity of the direct-acting mutagen. .
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Huang Q, Lu G, Shen HM, Chung MCM, Ong CN. Anti-cancer properties of anthraquinones from rhubarb. Med Res Rev 2007; 27:609-30. [PMID: 17022020 DOI: 10.1002/med.20094] [Citation(s) in RCA: 393] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Rhubarb has been used as a traditional Chinese medicine since ancient times and today it is still present in various herbal preparations. In this review the toxicological and anti-neoplastic potentials of the main anthraquinones from Rhubarb, Rheum palmatum, will be highlighted. It is interesting to note that although the chemical structures of various anthraquinones in this plant are similar, their bioactivities are rather different. The most abundant anthraquinone of rhubarb, emodin, was capable of inhibiting cellular proliferation, induction of apoptosis, and prevention of metastasis. These capabilities are reported to act through tyrosine kinases, phosphoinositol 3-kinase (PI3K), protein kinase C (PKC), NF-kappa B (NF-kappaB), and mitogen-activated protein kinase (MAPK) signaling cascades. Aloe-emodin is another major component in rhubarb found to have anti-tumor properties. Its anti-proliferative property has been demonstrated to be through the p53 and its downstream p21 pathway. Our recent proteomic study also suggests that the molecular targets of these two anthraquinones are different. However, both components were found to be able to potentiate the anti-proliferation of various chemotherapeutic agents. Rhein is the other major rhubarb anthraquinone, although less well studied. This compound could effectively inhibit the uptake of glucose in tumor cells, caused changes in membrane-associated functions and led to cell death. Interestingly, all three major rhubarb anthraquinones were reported to have in vitro phototoxic. This re-evaluation of an old remedy suggests that several bioactive anthraquinones of rhubarb possess promising anti-cancer properties and could have a broad therapeutic potential.
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Affiliation(s)
- Qing Huang
- Department of Community, Occupational and Family Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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Charlot JF, Nicolier M, Prétet JL, Mougin C. Modulation of p53 transcriptional activity by PRIMA-1 and Pifithrin-alpha on staurosporine-induced apoptosis of wild-type and mutated p53 epithelial cells. Apoptosis 2006; 11:813-27. [PMID: 16554962 DOI: 10.1007/s10495-006-5876-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
We recently argued for a major role of p53 in staurosporine(ST)-induced apoptosis of immortalized epithelial cells, depending on their p53 status. Here, we studied the effects of PRIMA-1 (p53 reactivation and induction of massive apoptosis) and Pifithrin-alpha (p fifty-three inhibitor) in combination with ST to reinforce our previous results by respectively restoring or inhibiting the p53 transcriptional activity in different cell lines.PRIMA-1 does modify neither expression of apoptosis-related proteins nor the percentage of wild-type p53 HeLa and CaSki cells with [symbol: see text]delta psi m and DNA cleavage, whilst it increases by 45% Bax expression and apoptosis of mutated p53 C33A cells. Pifithrin-alpha, does modify neither Bax expression nor apoptosis level of C33A cells, but readily inhibits both [symbol: see text]delta psi m and DNA fragmentation of p53wt cells with decreasing Bax expression. These data support the evidence that PRIMA-1 could be a good candidate, as an anti-cancer drug targeting mutant p53, in order to increase ST efficiency. Moreover, Pifithrin-alpha could be used in combination with ST and PRIMA-1 to prevent side effects of anti-tumor therapies in cells expressing mutant P53.
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Affiliation(s)
- J F Charlot
- Université de Franche-Comté, UFR Médecine et Pharmacie, EA 3181, IFR 133. 19 rue Ambroise Paré, 25000 Besançon, France
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