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From Foods to Chemotherapeutics: The Antioxidant Potential of Dietary Phytochemicals. Processes (Basel) 2022. [DOI: 10.3390/pr10061222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Food plants have been recognized for their medicinal properties for millennia, a concept supported by epidemiological studies indicating long-term health benefits for people consuming greater amounts of fruits and vegetables. As our technology and instrumentation advance, researchers have the ability to identify promising phytochemicals, and examine their potential benefits, or detriments, to human health. While results from trials investigating single chemical supplementation have sometimes produced negative health results, studies investigating the synergistic action of phytochemicals—either within our diet or as an adjuvant to radiation or chemotherapy—appear promising. Utilizing phytochemicals as synergistic agents may lower the chemotherapeutic doses needed to incur physiological results, while also using chemicals with fewer toxic effects. This review investigates a variety of plant-produced chemicals humans typically ingest, their impacts on overall health patterns, molecular mechanisms associated with their health impacts, and the potential of their synergistic use for therapeutic purposes.
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Qi Z, Ji H, Le M, Li H, Wieland A, Bauer S, Liu L, Wink M, Herr I. Sulforaphane promotes C. elegans longevity and healthspan via DAF-16/DAF-2 insulin/IGF-1 signaling. Aging (Albany NY) 2021; 13:1649-1670. [PMID: 33471780 PMCID: PMC7880325 DOI: 10.18632/aging.202512] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 12/18/2020] [Indexed: 12/12/2022]
Abstract
The broccoli-derived isothiocyanate sulforaphane inhibits inflammation, oxidative stress and cancer, but its effect on healthspan and longevity are unclear. We used the C. elegans nematode model and fed the wildtype and 9 mutant strains ±sulforaphane. The lifespan, phenotype, pharyngeal pumping, mobility, lipofuscin accumulation, and RNA and protein expression of the nematodes were assessed by using Kaplan-Meier survival analysis, in vivo live imaging, fluorescence microscopy, and qRT-PCR. Sulforaphane increased the lifespan and promoted a health-related phenotype by increasing mobility, appetite and food intake and reducing lipofuscin accumulation. Mechanistically, sulforaphane inhibited DAF-2-mediated insulin/insulin-like growth factor signaling and its downstream targets AGE-1, AKT-1/AKT-2. This was associated with increased nuclear translocation of the FOXO transcription factor homolog DAF-16. In turn, the target genes sod-3, mtl-1 and gst-4, known to enhance stress resistance and lifespan, were upregulated. These results indicate that sulforaphane prolongs the lifespan and healthspan of C. elegans through insulin/IGF-1 signaling. Our results provide the basis for a nutritional sulforaphane-enriched strategy for the promotion of healthy aging and disease prevention.
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Affiliation(s)
- Zhimin Qi
- Molecular OncoSurgery, Section Surgical Research, Department of General, Visceral and Transplant Surgery, University of Heidelberg, Heidelberg, Germany
| | - Huihui Ji
- Molecular OncoSurgery, Section Surgical Research, Department of General, Visceral and Transplant Surgery, University of Heidelberg, Heidelberg, Germany
| | - Monika Le
- Molecular OncoSurgery, Section Surgical Research, Department of General, Visceral and Transplant Surgery, University of Heidelberg, Heidelberg, Germany
| | - Hanmei Li
- Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Heidelberg, Germany
| | - Angela Wieland
- Molecular OncoSurgery, Section Surgical Research, Department of General, Visceral and Transplant Surgery, University of Heidelberg, Heidelberg, Germany
| | - Sonja Bauer
- Molecular OncoSurgery, Section Surgical Research, Department of General, Visceral and Transplant Surgery, University of Heidelberg, Heidelberg, Germany
| | - Li Liu
- Molecular OncoSurgery, Section Surgical Research, Department of General, Visceral and Transplant Surgery, University of Heidelberg, Heidelberg, Germany
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Heidelberg, Germany
| | - Ingrid Herr
- Molecular OncoSurgery, Section Surgical Research, Department of General, Visceral and Transplant Surgery, University of Heidelberg, Heidelberg, Germany
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Molecular Insights into the Multifunctional Role of Natural Compounds: Autophagy Modulation and Cancer Prevention. Biomedicines 2020; 8:biomedicines8110517. [PMID: 33228222 PMCID: PMC7699596 DOI: 10.3390/biomedicines8110517] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/12/2020] [Accepted: 11/12/2020] [Indexed: 12/16/2022] Open
Abstract
Autophagy is a vacuolar, lysosomal degradation pathway for injured and damaged protein molecules and organelles in eukaryotic cells, which is controlled by nutrients and stress responses. Dysregulation of cellular autophagy may lead to various diseases such as neurodegenerative disease, obesity, cardiovascular disease, diabetes, and malignancies. Recently, natural compounds have come to attention for being able to modulate the autophagy pathway in cancer prevention, although the prospective role of autophagy in cancer treatment is very complex and not yet clearly elucidated. Numerous synthetic chemicals have been identified that modulate autophagy and are favorable candidates for cancer treatment, but they have adverse side effects. Therefore, different phytochemicals, which include natural compounds and their derivatives, have attracted significant attention for use as autophagy modulators in cancer treatment with minimal side effects. In the current review, we discuss the promising role of natural compounds in modulating the autophagy pathway to control and prevent cancer, and provide possible therapeutic options.
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Wang Y, Petrikova E, Gross W, Sticht C, Gretz N, Herr I, Karakhanova S. Sulforaphane Promotes Dendritic Cell Stimulatory Capacity Through Modulation of Regulatory Molecules, JAK/STAT3- and MicroRNA-Signaling. Front Immunol 2020; 11:589818. [PMID: 33193420 PMCID: PMC7661638 DOI: 10.3389/fimmu.2020.589818] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/02/2020] [Indexed: 12/27/2022] Open
Abstract
Introduction The broccoli isothiocyanate sulforaphane was shown to inhibit inflammation and tumor progression, also in pancreatic cancer, while its effect on tumor immunity is poorly understood. We investigated the immunoregulatory effect of sulforaphane on human dendritic cells alone and in presence of pancreatic tumor antigens, as well as underlying molecular mechanisms. Methods Sulforaphane-treated human dendritic cells were matured in vitro with a cytokine cocktail, and the expression of regulatory molecules was examined by flow cytometry. The subsequent T-cell response was analyzed by T-cell proliferation assay and CD25 expression. To confirm the findings, dendritic cells pulsed with pancreatic cancer-derived tumor antigens were used. To identify the involved pathway- and microRNA-signaling in sulforaphane-treated dendritic cells, inhibitors of various signaling pathways, western blot analysis, microRNA array, and bioinformatic analysis were applied. Results Sulforaphane modulated the expression of the costimulatory CD80, CD83 and the suppressive B7-H1 molecules on dendritic cells and thereby promoted activation of T cells. The effect was verified in presence of pancreatic tumor antigens. Phosphorylation of STAT3 in dendritic cells was diminished by sulforaphane, and the inhibition of JAK/STAT3 led to downregulation of B7-H1 expression. Among the identified top 100 significant microRNA candidates, the inhibition of miR-155-5p, important for the expression of costimulatory molecules, and the induction of miR-194-5p, targeting the B7-H1 gene, were induced by sulforaphane. Conclusion Our findings demonstrate that sulforaphane promotes T-cell activation by dendritic cells through the modulation of regulatory molecules, JAK/STAT3- and microRNA-signaling in healthy conditions and in context of pancreatic cancer-derived antigens. They explore the immunoregulatory properties of sulforaphane and justify further research on nutritional strategies in the co-treatment of cancer.
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Affiliation(s)
- Yangyi Wang
- Section Surgical Research, Molecular OncoSurgery Group, Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
| | - Emilia Petrikova
- Section Surgical Research, Molecular OncoSurgery Group, Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
| | - Wolfgang Gross
- Section Surgical Research, Molecular OncoSurgery Group, Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
| | - Carsten Sticht
- Medical Research Center, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Norbert Gretz
- Medical Research Center, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Ingrid Herr
- Section Surgical Research, Molecular OncoSurgery Group, Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
| | - Svetlana Karakhanova
- Section Surgical Research, Molecular OncoSurgery Group, Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
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Coscueta ER, Reis CA, Pintado M. Phenylethyl Isothiocyanate Extracted from Watercress By-Products with Aqueous Micellar Systems: Development and Optimisation. Antioxidants (Basel) 2020; 9:antiox9080698. [PMID: 32756474 PMCID: PMC7465691 DOI: 10.3390/antiox9080698] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 12/19/2022] Open
Abstract
Phenylethyl isothiocyanate (PEITC) was reported as a useful antioxidant, anti-inflammatory, and chemopreventive agent. Due to technological and stability issues, it is necessary to be able to extract PEITC from its natural matrix (watercress) through sustainable and scalable methodologies. In this article, we explored, for the first time, the extractive capacity of aqueous micellar systems (AMSs) of two non-ionic surfactants. For this, we compared the AMSs with conventional organic solvents. Furthermore, we developed and optimised a new integral PEITC production and extraction process by a multifactorial experimental design. Finally, we analysed the antioxidant capacity by the oxygen radical absorbance capacity (ORAC) and ABTS methods. As results, the AMSs were able to extract PEITC at the same level as the tested conventional solvents. In addition, we optimised by response surface methodology the integrated process (2.0% m/m, 25.0 °C, pH 9.0), which was equally effective (ca. 2900 µg PEITC/g watercress), regardless of the surfactant used. The optimal extracts showed greater antioxidant capacity than pure PEITC, due to other antioxidant compounds extracted in the process. In conclusion, by the present work, we developed an innovative cost-effective and low environmental impact process for obtaining PEITC extracts from watercress by-products.
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Affiliation(s)
- Ezequiel R. Coscueta
- CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
- Correspondence: (E.R.C.); (M.P.); Tel.: +351-22-558-0001 (M.P.)
| | - Celso A. Reis
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal;
- Institute of Molecular Pathology and Immunology of University of Porto, Ipatimup, 4200-135 Porto, Portugal
- Medical Faculty, University of Porto, Al. Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Manuela Pintado
- CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
- Correspondence: (E.R.C.); (M.P.); Tel.: +351-22-558-0001 (M.P.)
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Wang M, Cai C, Lin J, Tao H, Zeng W, Zhang F, Miao H, Sun B, Wang Q. Combined treatment of epi-brassinolide and NaCl enhances the main phytochemicals in Chinese kale sprouts. Food Chem 2020; 315:126275. [DOI: 10.1016/j.foodchem.2020.126275] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 01/21/2023]
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Rahmani R, Bouajila J, Jouaidi M, Debouba M. African mustard (Brassica tournefortii) as source of nutrients and nutraceuticals properties. J Food Sci 2020; 85:1856-1871. [DOI: 10.1111/1750-3841.15157] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 03/23/2020] [Accepted: 04/07/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Rami Rahmani
- Unité de recherche « Valorisation des biomolécules actives », Institut Supérieur de Biologie Appliquée de Médenine, Route El Jorf – Km 22.5 ‐ 4119 MedenineUniversité de Gabès Gabès Tunisia
- Laboratoire de Génie Chimique, UMR 5503, Université de Toulouse, CNRS, INPTUPS Toulouse France
| | - Jalloul Bouajila
- Laboratoire de Génie Chimique, UMR 5503, Université de Toulouse, CNRS, INPTUPS Toulouse France
| | - Marwa Jouaidi
- Unité de recherche « Valorisation des biomolécules actives », Institut Supérieur de Biologie Appliquée de Médenine, Route El Jorf – Km 22.5 ‐ 4119 MedenineUniversité de Gabès Gabès Tunisia
- Laboratoire de Génie Chimique, UMR 5503, Université de Toulouse, CNRS, INPTUPS Toulouse France
| | - Mohamed Debouba
- Unité de recherche « Valorisation des biomolécules actives », Institut Supérieur de Biologie Appliquée de Médenine, Route El Jorf – Km 22.5 ‐ 4119 MedenineUniversité de Gabès Gabès Tunisia
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Georgikou C, Buglioni L, Bremerich M, Roubicek N, Yin L, Gross W, Sticht C, Bolm C, Herr I. Novel Broccoli Sulforaphane-Based Analogues Inhibit the Progression of Pancreatic Cancer without Side Effects. Biomolecules 2020; 10:biom10050769. [PMID: 32429039 PMCID: PMC7277136 DOI: 10.3390/biom10050769] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 12/11/2022] Open
Abstract
The naturally occurring isothiocyanate sulforaphane, found in Brassicaceae vegetables, is promising in cancer treatment, e.g., by the normalization of enhanced levels of NF-κB-signaling in tumor stem cells. We chemically synthesized seven sulforaphane analogues by substitution of the sulfinyl group (S(O)) to either sulfimidoyl (S(NR)) or sulfonimidoyl (S (O) (NR)) groups, and characterized them in the cell lines of pancreatic cancer and several other tumor entities, including the NCI-60 cell panel. MTT and colony forming assays, flow cytometry, immunohistochemistry, microRNA arrays, bioinformatics, tumor xenotransplantation, and Kaplan Meier survival curves were performed. Compared to sulforaphane, the analogue SF102 was most efficient in inhibition of viability, colony formation, tumor growth, and the induction of apoptosis, followed by SF134. Side effects were not observed, as concluded from the body weight and liver histology of chick embryos and survival of C. elegans nematodes. Among 6659 differentially regulated microRNAs, miR29b-1-5p, and miR-27b-5p were downregulated by sulforaphane compared to controls, but upregulated by SF102 and SF134 compared to sulforaphane, suggesting differential signaling. Each substance was involved in the regulation of several NF-κB-related target genes. In conclusion, sulforaphane analogues are promising for the development of highly active new drugs in cancer treatment.
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Affiliation(s)
- Christina Georgikou
- Section Surgical Research, Molecular OncoSurgery, Department of General, Visceral and Transplantation Surgery, University of Heidelberg, 69120 Heidelberg, Germany; (C.G.); (L.Y.); (W.G.)
| | - Laura Buglioni
- Institute of Organic Chemistry, RWTH Aachen University, 52056 Aachen, Germany; (L.B.); (M.B.); (N.R.)
| | - Maximilian Bremerich
- Institute of Organic Chemistry, RWTH Aachen University, 52056 Aachen, Germany; (L.B.); (M.B.); (N.R.)
| | - Nico Roubicek
- Institute of Organic Chemistry, RWTH Aachen University, 52056 Aachen, Germany; (L.B.); (M.B.); (N.R.)
| | - Libo Yin
- Section Surgical Research, Molecular OncoSurgery, Department of General, Visceral and Transplantation Surgery, University of Heidelberg, 69120 Heidelberg, Germany; (C.G.); (L.Y.); (W.G.)
| | - Wolfgang Gross
- Section Surgical Research, Molecular OncoSurgery, Department of General, Visceral and Transplantation Surgery, University of Heidelberg, 69120 Heidelberg, Germany; (C.G.); (L.Y.); (W.G.)
| | - Carsten Sticht
- Medical Research Center, Medical Faculty Mannheim, University of Heidelberg, 69117 Mannheim, Germany;
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, 52056 Aachen, Germany; (L.B.); (M.B.); (N.R.)
- Correspondence: (C.B.); (I.H.); Tel.: +49-241-809-4675 (C.B.); +49-6221-56-6401 (I.H.); Fax: +49-241-809-2391 (C.B.); +49-6221-56-6402 (I.H.)
| | - Ingrid Herr
- Section Surgical Research, Molecular OncoSurgery, Department of General, Visceral and Transplantation Surgery, University of Heidelberg, 69120 Heidelberg, Germany; (C.G.); (L.Y.); (W.G.)
- Correspondence: (C.B.); (I.H.); Tel.: +49-241-809-4675 (C.B.); +49-6221-56-6401 (I.H.); Fax: +49-241-809-2391 (C.B.); +49-6221-56-6402 (I.H.)
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Inhibition of miR30a-3p by sulforaphane enhances gap junction intercellular communication in pancreatic cancer. Cancer Lett 2020; 469:238-245. [DOI: 10.1016/j.canlet.2019.10.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 10/15/2019] [Accepted: 10/27/2019] [Indexed: 12/16/2022]
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Pérez-Calderón J, Santos MV, Zaritzky N. Processing of pre-cooked frozen Brussels sprouts: Heat transfer modelling as related to enzyme inactivation and quality stability. FOOD AND BIOPRODUCTS PROCESSING 2019. [DOI: 10.1016/j.fbp.2019.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ultrafiltration of Broccoli Juice Using Polyethersulfone Membrane: Fouling Analysis and Evaluation of the Juice Quality. FOOD BIOPROCESS TECH 2019. [DOI: 10.1007/s11947-019-02292-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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12
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Yilmaz E, Bagci PO. Production of phytotherapeutics from broccoli juice by integrated membrane processes. Food Chem 2018; 242:264-271. [DOI: 10.1016/j.foodchem.2017.09.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 09/08/2017] [Accepted: 09/12/2017] [Indexed: 12/18/2022]
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Alam MF, Laskar AA, Maryam L, Younus H. Activation of Human Salivary Aldehyde Dehydrogenase by Sulforaphane: Mechanism and Significance. PLoS One 2016; 11:e0168463. [PMID: 27997560 PMCID: PMC5172892 DOI: 10.1371/journal.pone.0168463] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/01/2016] [Indexed: 02/07/2023] Open
Abstract
Cruciferous vegetables contain the bio-active compound sulforaphane (SF) which has been reported to protect individuals against various diseases by a number of mechanisms, including activation of the phase II detoxification enzymes. In this study, we show that the extracts of five cruciferous vegetables that we commonly consume and SF activate human salivary aldehyde dehydrogenase (hsALDH), which is a very important detoxifying enzyme in the mouth. Maximum activation was observed at 1 μg/ml of cabbage extract with 2.6 fold increase in the activity. There was a ~1.9 fold increase in the activity of hsALDH at SF concentration of ≥ 100 nM. The concentration of SF at half the maximum response (EC50 value) was determined to be 52 ± 2 nM. There was an increase in the Vmax and a decrease in the Km of the enzyme in the presence of SF. Hence, SF interacts with the enzyme and increases its affinity for the substrate. UV absorbance, fluorescence and CD studies revealed that SF binds to hsALDH and does not disrupt its native structure. SF binds with the enzyme with a binding constant of 1.23 x 107 M-1. There is one binding site on hsALDH for SF, and the thermodynamic parameters indicate the formation of a spontaneous strong complex between the two. Molecular docking analysis depicted that SF fits into the active site of ALDH3A1, and facilitates the catalytic mechanism of the enzyme. SF being an antioxidant, is very likely to protect the catalytic Cys 243 residue from oxidation, which leads to the increase in the catalytic efficiency and hence the activation of the enzyme. Further, hsALDH which is virtually inactive towards acetaldehyde exhibited significant activity towards it in the presence of SF. It is therefore very likely that consumption of large quantities of cruciferous vegetables or SF supplements, through their activating effect on hsALDH can protect individuals who are alcohol intolerant against acetaldehyde toxicity and also lower the risk of oral cancer development.
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Affiliation(s)
- Md. Fazle Alam
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Amaj Ahmed Laskar
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Lubna Maryam
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Hina Younus
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
- * E-mail:
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Zou X, Qu Z, Fang Y, Shi X, Ji Y. Endoplasmic reticulum stress mediates sulforaphane-induced apoptosis of HepG2 human hepatocellular carcinoma cells. Mol Med Rep 2016; 15:331-338. [PMID: 27959410 DOI: 10.3892/mmr.2016.6016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 11/04/2016] [Indexed: 02/07/2023] Open
Abstract
Sulforaphane (SFN) is a naturally occurring chemopreventive agent, which effectively inhibits proliferation of HepG2 human hepatocellular carcinoma cells via mitochondria‑mediated apoptosis. Endoplasmic reticulum stress is considered the most important cause of cell apoptosis; therefore, the present study aimed to determine whether the endoplasmic reticulum pathway was involved in SFN-induced apoptosis of HepG2 cells. An MTT assay was used to detect the inhibitory effects of SFN on HepG2 cells. Fluorescence microscopy was used to observe the morphological changes in apoptotic cells, and western blot analysis was conducted to detect the expression of binding immunoglobulin protein (Bip)/glucose-regulated protein 78 (GRP78), X‑box binding protein‑1 (XBP‑1) and BH3 interacting domain death agonist (Bid). Furthermore, flow cytometry was used to determine the apoptotic rate of HepG2 cells, and the protein expression of C/EBP homologous protein (CHOP)/growth arrest‑ and DNA damage‑inducible gene 153 (GADD153) and caspase-12 in HepG2 cells. The results indicated that SFN significantly inhibited the proliferation of HepG2 cells; the half maximal inhibitory concentration values were 32.03±0.96, 20.90±1.96 and 13.87±0.44 µmol/l, following treatment with SFN for 24, 48 and 72 h, respectively. Following 48 h of SFN treatment (10, 20 and 40 µmol/l), the apoptotic rates of HepG2 cells were 31.8, 61.3 and 77.1%, respectively. Furthermore, after 48 h of exposure to SFN, the cells presented typical morphological alterations of apoptosis, as detected under fluorescence microscopy. Treatment with SFN for 48 h also significantly upregulated the protein expression levels of Bip/GRP78, XBP‑1, caspase‑12, CHOP/GADD153 and Bid in HepG2 cells. In conclusion, endoplasmic reticulum stress may be considered the most important mechanism underlying SFN-induced apoptosis in HepG2 cells.
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Affiliation(s)
- Xiang Zou
- Engineering Research Center of Natural Antineoplastic Drugs, Ministry of Education, Harbin, Heilongjiang 150076, P.R. China
| | - Zhongyuan Qu
- College of Pharmacy, Harbin University of Commerce, Harbin, Heilongjiang 150076, P.R. China
| | - Yueni Fang
- Engineering Research Center of Natural Antineoplastic Drugs, Ministry of Education, Harbin, Heilongjiang 150076, P.R. China
| | - Xin Shi
- Post Doctoral Research Center of Materia Medica, Harbin University of Commerce, Harbin, Heilongjiang 150076, P.R. China
| | - Yubin Ji
- Post Doctoral Research Center of Materia Medica, Harbin University of Commerce, Harbin, Heilongjiang 150076, P.R. China
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Deng M, Qian H, Chen L, Sun B, Chang J, Miao H, Cai C, Wang Q. Influence of pre-harvest red light irradiation on main phytochemicals and antioxidant activity of Chinese kale sprouts. Food Chem 2016; 222:1-5. [PMID: 28041552 DOI: 10.1016/j.foodchem.2016.11.157] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 11/29/2016] [Accepted: 11/30/2016] [Indexed: 11/18/2022]
Abstract
The effects of pre-harvest red light irradiation on main healthy phytochemicals as well as antioxidant activity of Chinese kale sprouts during postharvest storage were investigated. 6-day-old sprouts were treated by red light for 24h before harvest and sampled for further analysis of nutritional quality on the first, second and third day after harvest. The results indicated that red light exposure notably postponed the degradation of aliphatic, indole, and total glucosinolates during postharvest storage. The vitamin C level was remarkably higher in red light treated sprouts on the first and second day after harvest when compared with the control. In addition, red light treatment also enhanced the accumulation of total phenolics and maintained higher level of antioxidant activity than the control. All above results suggested that pre-harvest red light treatment might provide a new strategy to maintain the nutritive value of Chinese kale sprouts during postharvest storage.
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Affiliation(s)
- Mingdan Deng
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Department of Horticulture, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Hongmei Qian
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Department of Horticulture, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Lili Chen
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Department of Horticulture, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Bo Sun
- College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China
| | - Jiaqi Chang
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Department of Horticulture, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Huiying Miao
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Department of Horticulture, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Congxi Cai
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Department of Horticulture, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Qiaomei Wang
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Department of Horticulture, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Department of Horticulture, Zhejiang University, Hangzhou 310058, China.
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Antiproliferative Effect of Indole Phytoalexins. Molecules 2016; 21:molecules21121626. [PMID: 27898039 PMCID: PMC6274154 DOI: 10.3390/molecules21121626] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 11/15/2016] [Accepted: 11/22/2016] [Indexed: 12/20/2022] Open
Abstract
Indole phytoalexins from crucifers have been shown to exhibit significant anti-cancer, chemopreventive, and antiproliferative activity. Phytoalexins are natural low molecular antimicrobial compounds that are synthesized and accumulated in plants after their exposure to pathogenic microorganisms. Most interestingly, crucifers appear to be the only plant family producing sulfur-containing indole phytoalexins. The mechanisms underlying its anti-cancer properties are unknown. Isolation from cruciferous plants does not provide sufficient quantities of indole phytoalexins and, for biological screening, they are usually obtainable through synthesis. Understanding the molecular mechanism of the action of these substances and their structure-activity relationships is quite important in the development of new analogs with a more favorable profile of biological activities. In this review, we present the key features of indole phytoalexins, mainly their antiproliferative ativities.
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Chandra V, Hong KM. Effects of deranged metabolism on epigenetic changes in cancer. Arch Pharm Res 2015; 38:321-37. [PMID: 25628247 DOI: 10.1007/s12272-015-0561-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 01/09/2015] [Indexed: 12/17/2022]
Abstract
The concept of epigenetics is now providing the mechanisms by which cells transfer their new environmental-change-induced phenotypes to their daughter cells. However, how extracellular or cytoplasmic environmental cues are connected to the nuclear epigenome remains incompletely understood. Recently emerging evidence suggests that epigenetic changes are correlated with metabolic changes via chromatin remodeling. As many human complex diseases including cancer harbor both epigenetic changes and metabolic dysregulation, understanding the molecular processes linking them has huge implications for disease pathogenesis and therapeutic intervention. In this review, the impacts of metabolic changes on cancer epigenetics are discussed, along with the current knowledge on cancer metabolism and epigenetics.
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Affiliation(s)
- Vishal Chandra
- Cancer Cell and Molecular Biology Branch, Research Institute, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang, 410-769, Korea
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Forster T, Rausch V, Zhang Y, Isayev O, Heilmann K, Schoensiegel F, Liu L, Nessling M, Richter K, Labsch S, Nwaeburu CC, Mattern J, Gladkich J, Giese N, Werner J, Schemmer P, Gross W, Gebhard MM, Gerhauser C, Schaefer M, Herr I. Sulforaphane counteracts aggressiveness of pancreatic cancer driven by dysregulated Cx43-mediated gap junctional intercellular communication. Oncotarget 2015; 5:1621-34. [PMID: 24742583 PMCID: PMC4039235 DOI: 10.18632/oncotarget.1764] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The extreme aggressiveness of pancreatic ductal adenocarcinoma (PDA) has been
associated with blocked gap junctional intercellular communication (GJIC) and the
presence of cancer stem cells (CSCs). We examined whether disturbed GJIC is
responsible for a CSC phenotype in established and primary cancer cells and patient
tissue of PDA using interdisciplinary methods based in physiology, cell and molecular
biology, histology and epigenetics. Flux of fluorescent dyes and gemcitabine through
gap junctions (GJs) was intact in less aggressive cells but not in highly malignant
cells with morphological dysfunctional GJs. Among several connexins, only Cx43 was
expressed on the cell surface of less aggressive and GJIC-competent cells, whereas
Cx43 surface expression was absent in highly malignant, E-cadherin-negative and
GJIC-incompetent cells. The levels of total Cx43 protein and Cx43 phosphorylated at
Ser368 and Ser279/282 were high in normal tissue but low to absent in malignant
tissue. si-RNA-mediated inhibition of Cx43 expression in GJIC-competent cells
prevented GJIC and induced colony formation and the expression of stem cell-related
factors. The bioactive substance sulforaphane enhanced Cx43 and E-cadherin levels,
inhibited the CSC markers c-Met and CD133, improved the functional morphology of GJs
and enhanced GJIC. Sulforaphane altered the phosphorylation of several kinases and
their substrates and inhibition of GSK3, JNK and PKC prevented sulforaphane-induced
CX43 expression. The sulforaphane-mediated expression of Cx43 was not correlated with
enhanced Cx43 RNA expression, acetylated histone binding and Cx43 promoter
de-methylation, suggesting that posttranslational phosphorylation is the dominant
regulatory mechanism. Together, the absence of Cx43 prevents GJIC and enhances
aggressiveness, whereas sulforaphane counteracts this process, and our findings
highlight dietary co-treatment as a viable treatment option for PDA.
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Affiliation(s)
- Tobias Forster
- General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
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19
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Appari M, Babu KR, Kaczorowski A, Gross W, Herr I. Sulforaphane, quercetin and catechins complement each other in elimination of advanced pancreatic cancer by miR-let-7 induction and K-ras inhibition. Int J Oncol 2014; 45:1391-400. [PMID: 25017900 PMCID: PMC4151818 DOI: 10.3892/ijo.2014.2539] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 06/19/2014] [Indexed: 02/06/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDA) has the worst prognosis of all malignancies, and current therapeutic options do not target cancer stem cells (CSCs), which may be the reason for the extreme aggressiveness. The dietary agents sulforaphane and quercetin enriched e.g., in broccoli, and the main and best studied green tea catechin EGCG hold promise as anti-CSC agents in PDA. We examined the efficacy of additional catechins and the combination of these bioactive agents to stem cell features and miRNA signaling. Two established and one primary PDA cell line and non-malignant pancreatic ductal cells were used. Whereas each agent strongly inhibited colony formation, the catechins ECG and CG were more effective than EGCG. A mixture of green tea catechins (GTCs) significantly inhibited viability, migration, expression of MMP-2 and -9, ALDH1 activity, colony and spheroid formation and induced apoptosis, but the combination of GTCs with sulforaphane or quercetin was superior. Following treatment with bioactive agents, the expression of miR-let7-a was specifically induced in cancer cells but not in normal cells and it was associated with K-ras inhibition. These data demonstrate that sulforaphane, quercetin and GTC complement each other in inhibition of PDA progression by induction of miR-let7-a and inhibition of K-ras.
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Affiliation(s)
- Mahesh Appari
- Molecular Oncosurgery, University Clinic of Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Kamesh R Babu
- Department of Pediatric Oncology, Hematology, Immunology and Pulmonology, University of Heidelberg, Heidelberg, Germany
| | - Adam Kaczorowski
- Molecular Oncosurgery, University Clinic of Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Wolfgang Gross
- Molecular Oncosurgery, University Clinic of Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ingrid Herr
- Molecular Oncosurgery, University Clinic of Heidelberg and German Cancer Research Center (DKFZ), Heidelberg, Germany
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Lozanovski VJ, Houben P, Hinz U, Hackert T, Herr I, Schemmer P. Pilot study evaluating broccoli sprouts in advanced pancreatic cancer (POUDER trial) - study protocol for a randomized controlled trial. Trials 2014; 15:204. [PMID: 24894410 PMCID: PMC4059031 DOI: 10.1186/1745-6215-15-204] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 05/12/2014] [Indexed: 12/26/2022] Open
Abstract
Background Pancreatic ductal adenocarcinoma (PDA) is one of the most aggressive malignancies with marked resistance to chemo- and radiotherapy. PDA-cancer stem cells (CSCs) are not targeted by current therapies and may be a reason for poor prognosis. Studies indicate that diets rich in cabbage, broccoli, and cauliflower offer cancer preventative and therapeutic benefits. Recent experimental studies have confirmed these findings and demonstrated that isothiocyanate, sulforaphane, and the polyphenol, quercetin, effectively reduced tumor growth and enhanced the sensitivity of the cancer cells to current chemotherapeutics. The aim of the present study is to test the feasibility of a randomized controlled trial on the application of freeze-dried broccoli sprouts in patients with advanced PDA. Methods and study design The study is designed as a prospective randomized, double-blinded pilot trial with a treatment and a placebo-controlled arm in a single center setting. A total number of forty patients (18 years or older) in two parallel groups with advanced, surgically non-resectable PDA under palliative chemotherapy are planned for recruitment. Patients in the treatment group will receive fifteen capsules of the study substance per day (90 mg of active sulforaphane) during the chemotherapy treatment course. Patients in the placebo group will receive the same capsule size and portion distribution with inactive substances (mainly methylcellulose). The follow-up duration is one year. Feasibility of the study substance, adverse effects, and patient compliance, as well as levels of serum tumor markers (CEA, CA 19-9), quality of life, and patient overall survival rates will be assessed at defined points of time. Discussion The POUDER trial is expected to transfer promising experimental and epidemiological data into a clinical pilot study to assess the effectiveness of broccoli sprout extracts in the treatment of advanced PDA. The study objectives will provide data on the clinical feasibility and acceptability of a supportive treatment option accompanying palliative chemotherapy. Based on these results, future clinical studies to create further evidence in this field are possible. Trial registration The POUDER trial has been registered at ClinicalTrials.gov with an ID NCT01879878 and WHO with an ID U1111-1144-2013 on June 13th 2013.
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Affiliation(s)
| | | | | | | | - Ingrid Herr
- Department of General and Transplant Surgery, University Hospital Heidelberg, Im Neuenheimer Feld 110, 69120 Heidelberg, Germany.
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LABSCH SABRINA, LIU LI, BAUER NATHALIE, ZHANG YIYAO, ALEKSANDROWICZ EWA, GLADKICH JURY, SCHÖNSIEGEL FRANK, HERR INGRID. Sulforaphane and TRAIL induce a synergistic elimination of advanced prostate cancer stem-like cells. Int J Oncol 2014; 44:1470-80. [PMID: 24626333 PMCID: PMC4027950 DOI: 10.3892/ijo.2014.2335] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Accepted: 01/03/2014] [Indexed: 01/31/2023] Open
Abstract
Advanced androgen-independent prostate cancer (AIPC) is an aggressive malignancy with a poor prognosis. Apoptosis-resistant cancer stem cells (CSCs) have been identified in AIPC and are not eliminated by current therapeutics. Novel therapeutic options, which are currently being evaluated in patient studies, include TRAIL and the broccoli-derived isothiocyanate sulforaphane. Although neither agent targets normal cells, TRAIL induces apoptosis in most cancer cells, and sulforaphane eliminates CSCs. In this study, the established AIPC cell lines DU145 and PC3, with enriched CSC features, and primary patient-derived prostate CSCs were treated with sulforaphane and recombinant soluble TRAIL. We examined the effects of these drugs on NF-κB activity, self-renewal and differentiation potential, and stem cell signaling via spheroid- and colony-forming assays, FACS and western blot analyses, immunohistochemistry, and an antibody protein array in vitro and after xenotransplantation. We largely found a stronger effect of sulforaphane on CSC properties compared to TRAIL, though the agents acted synergistically when applied in combination. This was associated with the inhibition of TRAIL-induced NF-κB binding; CXCR4, Jagged1, Notch 1, SOX 2, and Nanog expression; ALDH1 activity inhibition; and the elimination of differentiation and self-renewal potential. In vivo, tumor engraftment and tumor growth were strongly inhibited, without the induction of liver necrosis or other obvious side effects. These findings suggest that sulforaphane shifts the balance from TRAIL-induced survival signals to apoptosis and thus explains the observed synergistic effect. A nutritional strategy for high sulforaphane intake may target the cancer-specific activity of TRAIL in CSCs.
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Affiliation(s)
- SABRINA LABSCH
- Experimental Surgery, General, Visceral and Transplantation Surgery, University of Heidelberg, D-69120 Heidelberg,
Germany
| | - LI LIU
- Experimental Surgery, General, Visceral and Transplantation Surgery, University of Heidelberg, D-69120 Heidelberg,
Germany
| | - NATHALIE BAUER
- Experimental Surgery, General, Visceral and Transplantation Surgery, University of Heidelberg, D-69120 Heidelberg,
Germany
| | - YIYAO ZHANG
- Experimental Surgery, General, Visceral and Transplantation Surgery, University of Heidelberg, D-69120 Heidelberg,
Germany
| | - EWA ALEKSANDROWICZ
- Experimental Surgery, General, Visceral and Transplantation Surgery, University of Heidelberg, D-69120 Heidelberg,
Germany
| | - JURY GLADKICH
- Experimental Surgery, General, Visceral and Transplantation Surgery, University of Heidelberg, D-69120 Heidelberg,
Germany
| | - FRANK SCHÖNSIEGEL
- Experimental Surgery, General, Visceral and Transplantation Surgery, University of Heidelberg, D-69120 Heidelberg,
Germany
| | - INGRID HERR
- Experimental Surgery, General, Visceral and Transplantation Surgery, University of Heidelberg, D-69120 Heidelberg,
Germany
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