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Guédon C, Tauber M, Linder C, Paul C, Shourick J. Real-life long-term efficacy of dupilumab in adults with moderate to severe atopic dermatitis: Results of a cohort study. Ann Dermatol Venereol 2023; 150:215-216. [PMID: 37598014 DOI: 10.1016/j.annder.2023.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/21/2023] [Accepted: 06/22/2023] [Indexed: 08/21/2023]
Affiliation(s)
- C Guédon
- Department of Dermatology, CHU and Université de Toulouse, Toulouse, France.
| | - M Tauber
- Department of Dermatology, CHU Lyon, Lyon, France
| | - C Linder
- Department of Dermatology, CH Pau, Pau, France
| | - C Paul
- Department of Dermatology, CHU and Université de Toulouse, Toulouse, France
| | - J Shourick
- Department of Epidemiology, Clinical Epidemiology and Public Health, UMR 1027 INSERM-University of Toulouse III, Toulouse University Hospital (CHU), Toulouse, France
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Osheter T, Campisi Pinto S, Randieri C, Perrotta A, Linder C, Weisman Z. Semi-Autonomic AI LF-NMR Sensor for Industrial Prediction of Edible Oil Oxidation Status. Sensors (Basel) 2023; 23:2125. [PMID: 36850723 PMCID: PMC9962559 DOI: 10.3390/s23042125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 02/09/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
The evaluation of an oil's oxidation status during industrial production is highly important for monitoring the oil's purity and nutritional value during production, transportation, storage, and cooking. The oil and food industry is seeking a real-time, non-destructive, rapid, robust, and low-cost sensor for nutritional oil's material characterization. Towards this goal, a 1H LF-NMR relaxation sensor application based on the chemical and structural profiling of non-oxidized and oxidized oils was developed. This study dealt with a relatively large-scale oil oxidation database, which included crude data of a 1H LF-NMR relaxation curve, and its reconstruction into T1 and T2 spectral fingerprints, self-diffusion coefficient D, and conventional standard chemical test results. This study used a convolutional neural network (CNN) that was trained to classify T2 relaxation curves into three ordinal classes representing three different oil oxidation levels (non-oxidized, partial oxidation, and high level of oxidation). Supervised learning was used on the T2 signals paired with the ground-truth labels of oxidation values as per conventional chemical lab oxidation tests. The test data results (not used for training) show a high classification accuracy (95%). The proposed AI method integrates a large training set, an LF-NMR sensor, and a machine learning program that meets the requirements of the oil and food industry and can be further developed for other applications.
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Affiliation(s)
- Tatiana Osheter
- Phyto-Lipid Biotech Lab (PLBL), Department of Biotechnology Engineering, Ben Gurion University of the Negev, Beer Sheva 8499000, Israel
| | - Salvatore Campisi Pinto
- Phyto-Lipid Biotech Lab (PLBL), Department of Biotechnology Engineering, Ben Gurion University of the Negev, Beer Sheva 8499000, Israel
| | | | - Andrea Perrotta
- eCampus University, Via Isimbardi, 10, 22060 Novedrate, Italy
| | - Charles Linder
- Phyto-Lipid Biotech Lab (PLBL), Department of Biotechnology Engineering, Ben Gurion University of the Negev, Beer Sheva 8499000, Israel
| | - Zeev Weisman
- Phyto-Lipid Biotech Lab (PLBL), Department of Biotechnology Engineering, Ben Gurion University of the Negev, Beer Sheva 8499000, Israel
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Osheter T, Campisi-Pinto S, Resende MT, Linder C, Wiesman Z. 1H LF-NMR Self-Diffusion Measurements for Rapid Monitoring of an Edible Oil's Food Quality with Respect to Its Oxidation Status. Molecules 2022; 27:molecules27186064. [PMID: 36144797 PMCID: PMC9505792 DOI: 10.3390/molecules27186064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022]
Abstract
The food quality of edible oils is dependent on basic chemical and structural changes that can occur by oxidation during preparation and storage. A rapid and efficient analytical method of the different steps of oil oxidation is described using a time-domain nuclear magnetic resonance (TD-NMR) sensor for measuring signals related to the chemical and physical properties of the oil. The degree of thermal oxidation of edible oils at 80 °C was measured by the conventional methodologies of peroxide and aldehyde analysis. Intact non-modified samples of the same oils were more rapidly analyzed for oxidation using a TD-NMR sensor for 2D T1-T2 and self-diffusion (D) measurements. A good linear correlation between the D values and the conventional chemical analysis was achieved, with the highest correlation of R2 = 0.8536 for the D vs. the aldehyde concentrations during the thermal oxidation of poly-unsaturated linseed oils, the oil most susceptible to oxidation. A good correlation between the D and aldehyde levels was also achieved for all the other oils. The possibility to simplify and minimize the time of oxidative analysis using the TD NMR sensors D values is discussed as an indicator of the oil’s oxidation quality, as a rapid and accurate methodology for the oil industry.
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Osheter T, Linder C, Wiesman Z. Time Domain (TD) Proton NMR Analysis of the Oxidative Safety and Quality of Lipid-Rich Foods. Biosensors (Basel) 2022; 12:bios12040230. [PMID: 35448290 PMCID: PMC9031308 DOI: 10.3390/bios12040230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/31/2022] [Accepted: 04/06/2022] [Indexed: 05/17/2023]
Abstract
Food safety monitoring is highly important due to the generation of unhealthy components within many food products during harvesting, processing, storage, transportation and cooking. Current technologies for food safety analysis often require sample extraction and the modification of the complex chemical and morphological structures of foods, and are either time consuming, have insufficient component resolution or require costly and complex instrumentation. In addition to the detection of unhealthy chemical toxins and microbes, food safety needs further developments in (a) monitoring the optimal nutritional compositions in many different food categories and (b) minimizing the potential chemical changes of food components into unhealthy products at different stages from food production until digestion. Here, we review an efficient methodology for overcoming the present analytical limitations of monitoring a food's composition, with an emphasis on oxidized food components, such as polyunsaturated fatty acids, in complex structures, including food emulsions, using compact instruments for simple real-time analysis. An intelligent low-field proton NMR as a time domain (TD) NMR relaxation sensor technology for the monitoring of T2 (spin-spin) and T1 (spin-lattice) energy relaxation times is reviewed to support decision-making by producers, retailers and consumers in regard to food safety and nutritional value during production, shipping, storage and consumption.
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Pelly T, Vance-Daniel J, Linder C. 997 A Systematic Review of Hernia Repair Simulation Models. Br J Surg 2021. [DOI: 10.1093/bjs/znab259.886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Introduction
There are barriers to education in both open and laparoscopic hernia repair technique, due to the laparoscopic learning curve, as well as reduced theatre time for junior surgical trainees. This is particularly evident during the current COVID-19 pandemic. Simulation models may provide further opportunities for training in hernia repair outside of the traditional surgical apprenticeship model.
Method
A systematic review was carried out following PRISMA guidelines to identify and evaluate simulation models in hernia repair. Of the 865 records screened, 26 were found to be relevant. These were assessed for face, content, and construct validity, as well as attempts to assess educational impact.
Results
Simulation models were identified comprising of animal tissues, synthetic materials, as well as VR technology. Models were designed for instruction in repair of inguinal, umbilical, incisional and diaphragmatic hernias. 4 of the 21 laparoscopic hernia repair models described demonstrated validity across several domains, and 3 of these 4 models were part of simulation-based courses demonstrating transferability of skills learnt in simulation to the operating room. Of the 5 open hernia repair simulation models, none were found to have demonstrated an educational impact in addition to assessing validity.
Conclusions
Few models individually were able to demonstrate validity and educational impact. Several novel assessment tools have been developed for assessment of progress when performing simulated and real laparoscopic inguinal hernia repair. More study is required, particularly for open hernia repair, including randomized controlled trials with large sample sizes to assess the transferability of skills.
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Affiliation(s)
- T Pelly
- St Helier Hospital, London, United Kingdom
| | | | - C Linder
- Royal London Hospital, London, United Kingdom
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Pelly T, Vance-Daniel J, Linder C. Characteristics of laparoscopic and open hernia repair simulation models: a systematic review. Hernia 2021; 26:39-46. [PMID: 34213680 PMCID: PMC8251686 DOI: 10.1007/s10029-021-02442-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 06/10/2021] [Indexed: 11/30/2022]
Abstract
Purpose Barriers to education in open and laparoscopic hernia repair technique include a steep learning curve and reduced theatre time for junior surgical trainees. This is particularly evident during the current COVID-19 pandemic. Simulation models may provide further opportunities for training in hernia repair outside of the traditional surgical apprenticeship model. Methods A systematic review was carried out following PRISMA guidelines to identify and evaluate simulation models in hernia repair. Of the 866 records screened, 27 were included in the analysis. These were assessed for face, content and construct validity, as well as their attempt to measure educational impact. Results Simulation models were identified comprising of animal tissues, synthetic materials and virtual reality (VR) technology. Models were designed for instruction in repair of inguinal, umbilical, incisional and diaphragmatic hernias. Twenty-one laparoscopic hernia repair models were described. Many models demonstrated validity across several domains, and three showed transferability of skills from simulation to the operating room. Of the six open hernia repair simulation models, none were found to have demonstrated an educational impact in addition to assessing validity. Conclusion Few models individually were able to demonstrate validity and educational impact. Several novel assessment tools have been developed for assessment of progress when performing simulated and real laparoscopic inguinal hernia repair. More study is required, particularly for open hernia repair, including randomized controlled trials with large sample sizes to assess the transferability of skills.
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Affiliation(s)
- T Pelly
- Department of General Surgery, St Helier Hospital, London, UK.
| | - J Vance-Daniel
- Department of General Surgery, St Helier Hospital, London, UK
| | - C Linder
- Department of General Surgery, Royal London Hospital, London, UK
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Resende MT, Osheter T, Linder C, Wiesman Z. Proton Low Field NMR Relaxation Time Domain Sensor for Monitoring of Oxidation Stability of PUFA-Rich Oils and Emulsion Products. Foods 2021; 10:foods10061385. [PMID: 34203981 PMCID: PMC8232597 DOI: 10.3390/foods10061385] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 06/02/2021] [Indexed: 01/25/2023] Open
Abstract
The nutritional characteristics of fatty acid (FA) containing foods are strongly dependent on the FA’s chemical/morphological arrangements. Paradoxically the nutritional, health enhancing FA polyunsaturated fatty acids (PUFAs) are highly susceptible to oxidation into harmful toxic side products during food preparation and storage. Current analytical technologies are not effective in the facile characterization of both the morphological and chemical structures of PUFA domains within materials for monitoring the parameters affecting their oxidation and antioxidant efficacy. The present paper is a review of our work on the development and application of a proton low field NMR relaxation sensor (1H LF NMR) and signal to time domain (TD) spectra reconstruction for chemical and morphological characterization of PUFA-rich oils and their oil in water emulsions, for assessing their degree and susceptibility to oxidation and the efficacy of antioxidants. The NMR signals are energy relaxation signals generated by spin–lattice interactions (T1) and spin–spin interactions (T2). These signals are reconstructed into 1D (T1 or T2) and 2D graphics (T1 vs. T2) by an optimal primal-dual interior method using a convex objectives (PDCO) solver. This is a direct measurement on non-modified samples where the individual graph peaks correlate to structural domains within the bulk oil or its emulsions. The emulsions of this review include relatively complex PUFA-rich oleosome-oil bodies based on the aqueous extraction from linseed seeds with and without encapsulation of externally added oils such as fish oil. Potential applications are shown in identifying optimal health enhancing PUFA-rich food formulations with maximal stability against oxidation and the potential for on-line quality control during preparation and storage.
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Resende MT, Linder C, Wiesman Z. Low‐Field
Nuclear Magnetic Resonance
Time Domain Characterization of Polyunsaturated Fatty Acid
–
Rich Linseed and Fish Oil Emulsions during Thermal Air Oxidation. J AM OIL CHEM SOC 2021. [DOI: 10.1002/aocs.12483] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Maysa T. Resende
- Phyto‐Lipid Biotechnology Laboratory, Department of Biotechnology Engineering, Faculty of Engineering Sciences Ben‐Gurion University of the Negev Beer‐Sheva 84105 Israel
| | - Charles Linder
- Phyto‐Lipid Biotechnology Laboratory, Department of Biotechnology Engineering, Faculty of Engineering Sciences Ben‐Gurion University of the Negev Beer‐Sheva 84105 Israel
| | - Zeev Wiesman
- Phyto‐Lipid Biotechnology Laboratory, Department of Biotechnology Engineering, Faculty of Engineering Sciences Ben‐Gurion University of the Negev Beer‐Sheva 84105 Israel
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Linder C, Mazereeuw-Hautier J, Pernin J, Duclaux-Loras R, Jonca N, Severino-Freire M. Ichtyose congénitale autosomique récessive due à une nouvelle mutation du gène CERS3 : présentation néonatale sévère. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.09.282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Linder C, Shourick J, Touhouche A, Giordano-Labadie F, Severino-Freire M, Borjesson C, Richet C, Marguery MC, Tauber M, Paul C. Analyse des patients non-répondeurs au dupilumab traités pour une dermatite atopique en vie réelle. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.09.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Resende MT, Linder C, Wiesman Z. Alkyl Tail Segments Mobility as a Marker for Omega‐3 Polyunsaturated Fatty Acid‐Rich Linseed Oil Oxidative Aging. J AM OIL CHEM SOC 2020. [DOI: 10.1002/aocs.12422] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Maysa T. Resende
- Phyto‐Lipid Biotechnology Laboratory, Department of Biotechnology Engineering, Faculty of Engineering Sciences Ben‐Gurion University of the Negev Beer‐Sheva 84105 Israel
| | - Charles Linder
- Phyto‐Lipid Biotechnology Laboratory, Department of Biotechnology Engineering, Faculty of Engineering Sciences Ben‐Gurion University of the Negev Beer‐Sheva 84105 Israel
| | - Zeev Wiesman
- Phyto‐Lipid Biotechnology Laboratory, Department of Biotechnology Engineering, Faculty of Engineering Sciences Ben‐Gurion University of the Negev Beer‐Sheva 84105 Israel
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12
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Linder C, Shourick J, Touhouche AT, Giordano-Labadie F, Severino-Freire M, Borjesson C, Richet C, Marguery MC, Tauber M, Paul C. Analysis of non-responders to dupilumab in clinical practice: a cohort study. J Eur Acad Dermatol Venereol 2020; 35:e192-e194. [PMID: 32870543 DOI: 10.1111/jdv.16900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- C Linder
- Department of Dermatology, Hospital Larrey, Toulouse University, Toulouse, France
| | - J Shourick
- Department of Dermatology, Hospital Larrey, Toulouse University, Toulouse, France
| | - A T Touhouche
- Department of Dermatology, Hospital Larrey, Toulouse University, Toulouse, France
| | - F Giordano-Labadie
- Department of Dermatology, Hospital Larrey, Toulouse University, Toulouse, France
| | - M Severino-Freire
- Department of Dermatology, Hospital Larrey, Toulouse University, Toulouse, France
| | - C Borjesson
- Department of Dermatology, Hospital Larrey, Toulouse University, Toulouse, France
| | - C Richet
- Department of Dermatology, Hospital Larrey, Toulouse University, Toulouse, France
| | - M C Marguery
- Department of Dermatology, Hospital Larrey, Toulouse University, Toulouse, France
| | - M Tauber
- Department of Dermatology, Hospital Larrey, Toulouse University, Toulouse, France
| | - C Paul
- Department of Dermatology, Hospital Larrey, Toulouse University, Toulouse, France
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Linder C, Monteil L, Chassaing N, Costa-Mendes L, Mazereeuw-Hautier J. [Linear lesions: A key dermatological feature of X-linked ectodermal dysplasia in a young girl]. Ann Dermatol Venereol 2020; 147:520-524. [PMID: 32690319 DOI: 10.1016/j.annder.2019.09.619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 06/04/2019] [Accepted: 09/25/2019] [Indexed: 10/23/2022]
Abstract
INTRODUCTION X-linked hypo/anhidrotic ectodermal dysplasia (AED) is the most common form of AED. It is manifested in boys by involvement of the adnexa, teeth and sweat glands. In girls, signs are usually minor and may include linear lesions that are poorly known since they are reported infrequently or overlooked. Herein we report 3 cases. PATIENTS AND METHODS There were two female patients who had been followed for several years, as well as the mother of one of the patients. Both of the younger patients had early diagnosis of DEA in childhood based on severe dental abnormalities, i.e. hypodontia and conical teeth, a typical facies, and cutaneous xerosis. The mother had milder signs and the diagnosis was made at the time of her daughter's diagnosis. All 3 had hypopigmented linear skin lesions (arms, buttocks or back), associated with a decrease in hair in one of them. Genetic analysis showed the R156H missense mutation at exon 3 of the EDA gene in all 3 patients. CONCLUSION These hypopigmentation linear lesions, sometimes with hair loss, are well known to pediatric clinicians and dermatologists concerning early diagnosis of AED in girls, especially where the other signs are mild. Early diagnosis enables appropriate therapeutic management and genetic counseling regarding future pregnancy.
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Affiliation(s)
- C Linder
- TSA 30030, service de dermatologie, centre de référence des maladies rares de la peau et des muqueuses, hôpital Larrey, 24 chemin de Pouvourville, 31059 Toulouse cedex 9, France.
| | - L Monteil
- TSA 40031, service de génétique médicale, pôle biologie, institut fédératif de biologie, 330, avenue de Grande-Bretagne, 31059 Toulouse cedex 9, France
| | - N Chassaing
- TSA 30030, université P.-Sabatier, hôpital Larrey, 24 chemin de Pouvourville, 31059 Toulouse cedex 9, France; TSA 40031, service de génétique médicale, pôle biologie, institut fédératif de biologie, 330, avenue de Grande-Bretagne, 31059 Toulouse cedex 9, France
| | - L Costa-Mendes
- TSA 50032, service d'odontologie et traitement dentaire, pôle voies respiratoires, faculté de chirurgie dentaire, 3, chemin des Maraîchers, 31059 Toulouse cedex 9, France
| | - J Mazereeuw-Hautier
- TSA 30030, service de dermatologie, centre de référence des maladies rares de la peau et des muqueuses, hôpital Larrey, 24 chemin de Pouvourville, 31059 Toulouse cedex 9, France; TSA 30030, université P.-Sabatier, hôpital Larrey, 24 chemin de Pouvourville, 31059 Toulouse cedex 9, France
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Kim T, Viard M, Afonin KA, Gupta K, Popov M, Salotti J, Johnson PF, Linder C, Heldman E, Shapiro BA. Characterization of Cationic Bolaamphiphile Vesicles for siRNA Delivery into Tumors and Brain. Mol Ther Nucleic Acids 2020; 20:359-372. [PMID: 32200271 PMCID: PMC7090283 DOI: 10.1016/j.omtn.2020.02.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 12/19/2019] [Accepted: 02/23/2020] [Indexed: 12/27/2022]
Abstract
Small interfering RNAs (siRNAs) are potential therapeutic substances due to their gene silencing capability as exemplified by the recent approval by the US Food and Drug Administration (FDA) of the first siRNA therapeutic agent (patisiran). However, the delivery of naked siRNAs is challenging because of their short plasma half-lives and poor cell penetrability. In this study, we used vesicles made from bolaamphiphiles (bolas), GLH-19 and GLH-20, to investigate their ability to protect siRNA from degradation by nucleases while delivering it to target cells, including cells in the brain. Based on computational and experimental studies, we found that GLH-19 vesicles have better delivery characteristics than do GLH-20 vesicles in terms of stability, binding affinity, protection against nucleases, and transfection efficiency, while GLH-20 vesicles contribute to efficient release of the delivered siRNAs, which become available for silencing. Our studies with vesicles made from a mixture of the two bolas (GLH-19 and GLH-20) show that they were able to deliver siRNAs into cultured cancer cells, into a flank tumor and into the brain. The vesicles penetrate cell membranes and the blood-brain barrier (BBB) by endocytosis and transcytosis, respectively, mainly through the caveolae-dependent pathway. These results suggest that GLH-19 strengthens vesicle stability, provides protection against nucleases, and enhances transfection efficiency, while GLH-20 makes the siRNA available for gene silencing.
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Affiliation(s)
- Taejin Kim
- RNA Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - Mathias Viard
- Basic Science Program, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Kirill A Afonin
- Nanoscale Science Program, Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC 28223, USA; The Center for Biomedical Engineering and Science, University of North Carolina at Charlotte, Charlotte, NC 28223, USA
| | - Kshitij Gupta
- RNA Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA
| | - Mary Popov
- Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Jacqueline Salotti
- Mouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Peter F Johnson
- Mouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | | | | | - Bruce A Shapiro
- RNA Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA.
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Resende MT, Linder C, Wiesman Z. 1
H LF‐NMR Energy Relaxation Time Characterization of the Chemical and Morphological Structure of PUFA‐Rich Linseed Oil During Oxidation With and Without Antioxidants. EUR J LIPID SCI TECH 2019. [DOI: 10.1002/ejlt.201800339] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Maysa T. Resende
- Plant Lipid Biotechnology Lab (PLBL)Department of Biotechnology EngineeringFaculty of Engineering SciencesBen Gurion University of the NegevBeer Sheva 84105Israel
| | - Charles Linder
- Plant Lipid Biotechnology Lab (PLBL)Department of Biotechnology EngineeringFaculty of Engineering SciencesBen Gurion University of the NegevBeer Sheva 84105Israel
| | - Zeev Wiesman
- Plant Lipid Biotechnology Lab (PLBL)Department of Biotechnology EngineeringFaculty of Engineering SciencesBen Gurion University of the NegevBeer Sheva 84105Israel
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16
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Resende MT, Campisi-Pinto S, Linder C, Wiesman Z. Multidimensional Proton Nuclear Magnetic Resonance Relaxation Morphological and Chemical Spectrum Graphics for Monitoring and Characterization of Polyunsaturated Fatty-Acid Oxidation. J AM OIL CHEM SOC 2019. [DOI: 10.1002/aocs.12182] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Maysa Teixeira Resende
- Plant Lipid Biotechnology Lab (PLBL), Department of Biotechnology Engineering, Faculty of Engineering Sciences; Ben Gurion University of the Negev; Ben Gurion Av. 1, Beer Sheva 84105 Israel
| | - Salvatore Campisi-Pinto
- Plant Lipid Biotechnology Lab (PLBL), Department of Biotechnology Engineering, Faculty of Engineering Sciences; Ben Gurion University of the Negev; Ben Gurion Av. 1, Beer Sheva 84105 Israel
| | - Charles Linder
- Plant Lipid Biotechnology Lab (PLBL), Department of Biotechnology Engineering, Faculty of Engineering Sciences; Ben Gurion University of the Negev; Ben Gurion Av. 1, Beer Sheva 84105 Israel
| | - Zeev Wiesman
- Plant Lipid Biotechnology Lab (PLBL), Department of Biotechnology Engineering, Faculty of Engineering Sciences; Ben Gurion University of the Negev; Ben Gurion Av. 1, Beer Sheva 84105 Israel
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Viret O, Spring JL, Zufferey V, Gindro K, Linder C, Gaume A, Murisier F. Past and future of sustainable viticulture in Switzerland. BIO Web Conf 2019. [DOI: 10.1051/bioconf/20191501013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Switzerland is a pioneer country in the development of integrated production (IP) and integrated pest management (IPM). The overall goal is sustainability at the ecological, economic and social level to produce high quality grapes. In 1993, the IP-IPM head-organisation VITISWISS was created. The starting points were the improvement of pest management by the biocontrol of spider mites and the control of grape berry moths by mating disruption and an optimal soil management, followed over the years by state-of-the-art sprayer calibration, development of disease forecasting models (AgroMeteo, VitiMeteo), leaf-area adapted dosage of plant protection products, enhanced biodiversity, water and cover crop management. The efforts and the results gained in a continuous education process by the growers are considerable, but not enough for consumers and politics concerned by the use of plant protection products. The absence of acaricides and insecticides as well as forecasting systems available on the internet (www.agrometeo.ch) for the control of downy and powdery mildew, represent the major progresses. Where mechanisation is possible, herbicides can progressively be replaced by mechanical technics, which is not possible in steep vineyards. The general irrational unscientific trend against “synthetic” plant protection products requests alternatives for the control of fungal diseases and for cover crop management under the vine rows to avoid excessive water-nitrogen competition particularly in the actual context of climate change.
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Linder C, Chassaing N, Monteil L, Mazereeuw-Hautier J. Lésions linéaires à type d’hyperpigmentation ou d’hyperpilosité : un signe spécifique de la dysplasie éctodermique anhidrotique liée à l’X chez la fille ? Ann Dermatol Venereol 2018. [DOI: 10.1016/j.annder.2018.09.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ioannou-Ttofa L, Michael-Kordatou I, Fattas SC, Eusebio A, Ribeiro B, Rusan M, Amer ARB, Zuraiqi S, Waismand M, Linder C, Wiesman Z, Gilron J, Fatta-Kassinos D. Treatment efficiency and economic feasibility of biological oxidation, membrane filtration and separation processes, and advanced oxidation for the purification and valorization of olive mill wastewater. Water Res 2017; 114:1-13. [PMID: 28214720 DOI: 10.1016/j.watres.2017.02.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 02/01/2017] [Accepted: 02/10/2017] [Indexed: 06/06/2023]
Abstract
Olive mill wastewater (OMW) is a major waste stream resulting from numerous operations that occur during the production stages of olive oil. The resulting effluent contains various organic and inorganic contaminants and its environmental impact can be notable. The present work aims at investigating the efficiency of (i) jet-loop reactor with ultrafiltration (UF) membrane system (Jacto.MBR), (ii) solar photo-Fenton oxidation after coagulation/flocculation pre-treatment and (iii) integrated membrane filtration processes (i.e. UF/nanofiltration (NF)) used for the treatment of OMW. According to the results, the efficiency of the biological treatment was high, equal to 90% COD and 80% total phenolic compounds (TPh) removal. A COD removal higher than 94% was achieved by applying the solar photo-Fenton oxidation process as post-treatment of coagulation/flocculation of OMW, while the phenolic fraction was completely eliminated. The combined UF/NF process resulted in very high conductivity and COD removal, up to 90% and 95%, respectively, while TPh were concentrated in the NF concentrate stream (i.e. 93% concentration). Quite important is the fact that the NF concentrate, a valuable and polyphenol rich stream, can be further valorized in various industries (e.g. food, pharmaceutical, etc.). The above treatment processes were found also to be able to reduce the initial OMW phytotoxicity at greenhouse experiments; with the effluent stream of solar photo-Fenton process to be the least phytotoxic compared to the other treated effluents. A SWOT (Strength, Weakness, Opportunities, Threats) analysis was performed, in order to determine both the strengths of each technology, as well as the possible obstacles that need to overcome for achieving the desired levels of treatment. Finally, an economic evaluation of the tested technologies was performed in an effort to measure the applicability and viability of these systems at real scale; highlighting that the cost cannot be regarded as a 'cut off criterion', since the most cost-effective option in not always the optimum one.
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Affiliation(s)
- L Ioannou-Ttofa
- Nireas-International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678, Nicosia, Cyprus
| | - I Michael-Kordatou
- Nireas-International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678, Nicosia, Cyprus
| | - S C Fattas
- Nireas-International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678, Nicosia, Cyprus
| | - A Eusebio
- Bioenergy Unit, National Laboratory of Energy and Geology, Estrada do Paço do Lumiar, 22, 1649-038, Lisboa, Portugal
| | - B Ribeiro
- Bioenergy Unit, National Laboratory of Energy and Geology, Estrada do Paço do Lumiar, 22, 1649-038, Lisboa, Portugal
| | - M Rusan
- Department of Natural Resources and Environment, Faculty of Agriculture, Jordan University of Science and Technology, Irbid, Jordan
| | - A R B Amer
- Department of Natural Resources and Environment, Faculty of Agriculture, Jordan University of Science and Technology, Irbid, Jordan
| | - S Zuraiqi
- Department of Natural Resources and Environment, Faculty of Agriculture, Jordan University of Science and Technology, Irbid, Jordan
| | - M Waismand
- Ben-Gurion University of the Negev, Departments of Biotechnology, Energy and Environmental Engineering, P.O. Box 653, Beer-Sheva, 84105, Israel
| | - C Linder
- Ben-Gurion University of the Negev, Departments of Biotechnology, Energy and Environmental Engineering, P.O. Box 653, Beer-Sheva, 84105, Israel
| | - Z Wiesman
- Ben-Gurion University of the Negev, Departments of Biotechnology, Energy and Environmental Engineering, P.O. Box 653, Beer-Sheva, 84105, Israel
| | - J Gilron
- Ben-Gurion University of the Negev, Departments of Biotechnology, Energy and Environmental Engineering, P.O. Box 653, Beer-Sheva, 84105, Israel
| | - D Fatta-Kassinos
- Nireas-International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678, Nicosia, Cyprus; Department of Civil and Environmental Engineering, University of Cyprus, P.O. Box 20537, CY-1678, Nicosia, Cyprus.
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Brami MV, Oren Y, Linder C, Bernstein R. Nanofiltration properties of asymmetric membranes prepared by phase inversion of sulfonated nitro-polyphenylsulfone. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.01.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chahine LM, Xie SX, Simuni T, Tran B, Postuma R, Amara A, Oertel WH, Iranzo A, Scordia C, Fullard M, Linder C, Purri R, Darin A, Rennert L, Videnovic A, Del Riva P, Weintraub D. Longitudinal changes in cognition in early Parkinson's disease patients with REM sleep behavior disorder. Parkinsonism Relat Disord 2016; 27:102-6. [PMID: 27010070 PMCID: PMC5031362 DOI: 10.1016/j.parkreldis.2016.03.006] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/13/2016] [Accepted: 03/10/2016] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Cognitive decline is common in Parkinson's disease (PD), and identifying patients at highest risk for it is essential. We aimed to examine the effect of possible REM sleep behavior disorder (pRBD) on rate of cognitive decline in early PD, for both global cognition and in specific cognitive domains. METHODS Parkinson's Progression Markers Initiative (PPMI) is a multi-site, international study of PD patients untreated at enrollment. pRBD was assessed with the REM sleep behavior disorder questionnaire (RBDSQ). Global cognition was assessed at baseline and annually using the Montreal Cognitive Assessment (MoCA) and a cognitive battery. Linear mixed effects models were used to examine the relationship between pRBD (RBDSQ≥6) and rate of change in cognitive variables. Age, sex, years of education, and baseline motor and cognitive scores were included as covariates. RESULTS The baseline sample consisted of 423 individuals with PD, mean age 61.7 years and 65.5% male. Data was available on 389, 366, and 196 participants at 1-year, 2-year, and 3-year follow-up respectively. Possible RBD occurred in 108 (25.5%) at baseline. In multivariate analyses, baseline RBD was associated with greater annual rate of decline in MoCA score (β = -0.34, 95%CI -0.54, -0.13, p < 0.001), Symbol Digit Modalities Test (β = -0.69, 95%CI -1.3, -0.09, p = 0.024), and Hopkins Verbal Learning Test-Revised, delayed free recall (β = -0.21, 95%CI -0.41, -0.013, p = 0.037). CONCLUSIONS Possible RBD is common in early PD and predicts future cognitive decline, particularly in attention and memory domains.
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Affiliation(s)
- L M Chahine
- The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
| | - S X Xie
- The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - T Simuni
- Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - B Tran
- The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - R Postuma
- McGill University, Montréal, Québec, Canada
| | - A Amara
- University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - W H Oertel
- Department of Neurology, Philipps University Marburg, Germany; Charitable Hertie Foundation, Frankfurt/Main, Germany
| | - A Iranzo
- Hospital Clinic de Barcelona, IDIBAPS, CIBERNED, Barcelona, Spain
| | - C Scordia
- The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - M Fullard
- The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - C Linder
- The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - R Purri
- The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - A Darin
- The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - L Rennert
- The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - A Videnovic
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - P Del Riva
- Department of Neurology, University Hospital Donostia, San Sebastián, Spain
| | - D Weintraub
- The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
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Ewonkem MB, Grinberg S, Lemcoff G, Shaubi E, Linder C, Heldman E. Newly synthesized bolaamphiphiles from castor oil and their aggregated morphologies for potential use in drug delivery. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.09.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Meiri N, Berman P, Colnago LA, Moraes TB, Linder C, Wiesman Z. Liquid-phase characterization of molecular interactions in polyunsaturated and n-fatty acid methyl esters by (1)H low-field nuclear magnetic resonance. Biotechnol Biofuels 2015; 8:96. [PMID: 26167203 PMCID: PMC4498500 DOI: 10.1186/s13068-015-0280-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 06/29/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND To identify and develop the best renewable and low carbon footprint biodiesel substitutes for petroleum diesel, the properties of different biodiesel candidates should be studied and characterized with respect to molecular structures versus biodiesel liquid property relationships. In our previous paper, (1)H low-field nuclear magnetic resonance (LF-NMR) relaxometry was investigated as a tool for studying the liquid-phase molecular packing interactions and morphology of fatty acid methyl esters (FAMEs). The technological potential was demonstrated with oleic acid and methyl oleate standards having similar alkyl chains but different head groups. In the present work, molecular organization versus segmental and translational movements of FAMEs in their pure liquid phase, with different alkyl chain lengths (10-20 carbons) and degrees of unsaturation (0-3 double bonds), were studied with (1)H LF-NMR relaxometry and X-ray, (1)H LF-NMR diffusiometry, and (13)C high-field NMR. RESULTS Based on density values and X-ray measurements, it was proposed that FAMEs possess a liquid crystal-like order above their melting point, consisting of random liquid crystal aggregates with void spaces between them, whose morphological properties depend on chain length and degree of unsaturation. FAMEs were also found to exhibit different degrees of rotational and translational motions, which were rationalized by chain organization within the clusters, and the degree and type of molecular interactions and temperature effects. At equivalent fixed temperature differences from melting point, saturated FAME molecules were found to have similar translational motion regardless of chain length, expressed by viscosity, self-diffusion coefficients, and spin-spin (T 2) (1)H LF-NMR. T 2 distributions suggest increased alkyl chain rigidity, and reduced temperature response of the peaks' relative contribution with increasing unsaturation is a direct result of the alkyl chain's morphological packing and molecular interactions. CONCLUSIONS Both the peaks' assignments for T 2 distributions of FAMEs and the model for their liquid crystal-like morphology in the liquid phase were confirmed. The study of morphological structures within liquids and their response to temperature changes by (1)H LF-NMR has a high value in the field of biodiesel and other research and applied disciplines in numerous physicochemical- and organizational-based properties, processes, and mechanisms of alkyl chains, molecular interactions, and morphologies.
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Affiliation(s)
- Nitzan Meiri
- />The Phyto-Lipid Biotechnology Lab, Departments of Biotechnology, Energy and Environmental Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105 Israel
| | - Paula Berman
- />The Phyto-Lipid Biotechnology Lab, Departments of Biotechnology, Energy and Environmental Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105 Israel
| | - Luiz Alberto Colnago
- />Embrapa Instrumentação, Rua 15 de Novembro 1452, São Carlos, SP 13560-970 Brazil
| | - Tiago Bueno Moraes
- />Instituto de Física de São Carlos, Universidade de São Paulo, Av. Trabalhador Sao-Carlense 400, São Carlos, SP 13566-590 Brazil
| | - Charles Linder
- />Zuckerberg Center for Water Sciences and Technology and Department of Biotechnology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105 Israel
| | - Zeev Wiesman
- />The Phyto-Lipid Biotechnology Lab, Departments of Biotechnology, Energy and Environmental Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105 Israel
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Gupta K, Afonin KA, Viard M, Herrero V, Kasprzak W, Kagiampakis I, Kim T, Koyfman AY, Puri A, Stepler M, Sappe A, KewalRamani VN, Grinberg S, Linder C, Heldman E, Blumenthal R, Shapiro BA. Bolaamphiphiles as carriers for siRNA delivery: From chemical syntheses to practical applications. J Control Release 2015; 213:142-151. [PMID: 26151705 DOI: 10.1016/j.jconrel.2015.06.041] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 06/01/2015] [Accepted: 06/29/2015] [Indexed: 12/15/2022]
Abstract
In this study we have investigated a new class of cationic lipids--"bolaamphiphiles" or "bolas"--for their ability to efficiently deliver small interfering RNAs (siRNAs) to cancer cells. The bolas of this study consist of a hydrophobic chain with one or more positively charged head groups at each end. Recently, we reported that micelles of the bolas GLH-19 and GLH-20 (derived from vernonia oil) efficiently deliver siRNAs, while having relatively low toxicities in vitro and in vivo. Our previous studies validated that; bolaamphiphiles can be designed to vary the magnitude of siRNA shielding, its delivery, and its subsequent release. To further understand the structural features of bolas critical for siRNAs delivery, new structurally related bolas (GLH-58 and GLH-60) were designed and synthesized from jojoba oil. Both bolas have similar hydrophobic domains and contain either one, in GLH-58, or two, in GLH-60 positively charged head groups at each end of the hydrophobic core. We have computationally predicted and experimentally validated that GLH-58 formed more stable nano sized micelles than GLH-60 and performed significantly better in comparison to GLH-60 for siRNA delivery. GLH-58/siRNA complexes demonstrated better efficiency in silencing the expression of the GFP gene in human breast cancer cells at concentrations of 5μg/mL, well below the toxic dose. Moreover, delivery of multiple different siRNAs targeting the HIV genome demonstrated further inhibition of virus production.
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Affiliation(s)
- Kshitij Gupta
- Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA; Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Kirill A Afonin
- Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA; Department of Chemistry, University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223, USA
| | - Mathias Viard
- Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA; Basic Science Program, Leidos Biomedical Research Inc., Frederick National Laboratory, Frederick, MD 21702, USA
| | - Virginia Herrero
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Wojciech Kasprzak
- Basic Science Program, Leidos Biomedical Research Inc., Frederick National Laboratory, Frederick, MD 21702, USA
| | - Ioannis Kagiampakis
- HIV Drug Resistance Program, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Taejin Kim
- Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Alexey Y Koyfman
- National Center for Macromolecular Imaging, Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Anu Puri
- Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Marissa Stepler
- Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Alison Sappe
- Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Vineet N KewalRamani
- Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Sarina Grinberg
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Charles Linder
- Department of Biotechnology, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Eliahu Heldman
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Robert Blumenthal
- Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Bruce A Shapiro
- Gene Regulation and Chromosome Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA.
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Berman P, Meiri N, Colnago LA, Moraes TB, Linder C, Levi O, Parmet Y, Saunders M, Wiesman Z. Study of liquid-phase molecular packing interactions and morphology of fatty acid methyl esters (biodiesel). Biotechnol Biofuels 2015; 8:12. [PMID: 25688289 PMCID: PMC4329664 DOI: 10.1186/s13068-014-0194-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Accepted: 12/23/2014] [Indexed: 05/08/2023]
Abstract
BACKGROUND (1)H low field nuclear magnetic resonance (LF-NMR) relaxometry has been suggested as a tool to distinguish between different molecular ensembles in complex systems with differential segmental or whole molecular motion and/or different morphologies. In biodiesel applications the molecular structure versus liquid-phase packing morphologies of fatty acid methyl esters (FAMEs) influences physico-chemical characteristics of the fuel, including flow properties, operability during cold weather, blending, and more. Still, their liquid morphological structures have scarcely been studied. It was therefore the objective of this work to explore the potential of this technology for characterizing the molecular organization of FAMEs in the liquid phase. This was accomplished by using a combination of supporting advanced technologies. RESULTS We show that pure oleic acid (OA) and methyl oleate (MO) standards exhibited both similarities and differences in the (1)H LF-NMR relaxation times (T2s) and peak areas, for a range of temperatures. Based on X-ray measurements, both molecules were found to possess a liquid crystal-like order, although a larger fluidity was found for MO, because as the temperature is increased, MO molecules separate both longitudinally and transversely from one another. In addition, both molecules exhibited a preferred direction of diffusion based on the apparent hydrodynamic radius. The close molecular packing arrangement and interactions were found to affect the translational and segmental motions of the molecules, as a result of dimerization of the head group in OA as opposed to weaker polar interactions in MO. CONCLUSIONS A comprehensive model for the liquid crystal-like arrangement of FAMEs in the liquid phase is suggested. The differences in translational and segmental motions of the molecules were rationalized by the differences in the (1)H LF-NMR T2 distributions of OA and MO, which was further supported by (13)C high field (HF)-NMR spectra and (1)H HF-NMR relaxation. The proposed assignment allows for material characterization based on parameters that contribute to properties in applications such as biodiesel fuels.
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Affiliation(s)
- Paula Berman
- />The Phyto-Lipid Biotechnology Laboratory, Departments of Biotechnology, Energy and Environmental Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105 Israel
| | - Nitzan Meiri
- />The Phyto-Lipid Biotechnology Laboratory, Departments of Biotechnology, Energy and Environmental Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105 Israel
| | - Luiz Alberto Colnago
- />Embrapa Instrumentação, Rua 15 de Novembro 1452, São Carlos, SP 13560-970 Brazil
| | - Tiago Bueno Moraes
- />Instituto de Física de São Carlos, Universidade de São Paulo, Av. Trabalhador Sao-Carlense 400, São Carlos, SP 13566-590 Brazil
| | - Charles Linder
- />Zuckerberg Center for Water Sciences and Technology and Department of Biotechnology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105 Israel
| | - Ofer Levi
- />Department of Industrial Engineering and Management, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105 Israel
| | - Yisrael Parmet
- />Department of Industrial Engineering and Management, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105 Israel
| | - Michael Saunders
- />Department of Management Science and Engineering, Stanford University, Stanford, CA USA
| | - Zeev Wiesman
- />The Phyto-Lipid Biotechnology Laboratory, Departments of Biotechnology, Energy and Environmental Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105 Israel
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Abstract
Most conventional cancer therapeutics gain limited access to many types of tumors while having considerable adverse effects, resulting in low therapeutic efficacy and high toxicity. Therefore, research has now focused on the development of novel drug delivery systems (DDS) with the goal of maintaining high therapeutic drug levels at malignant cells and as low as possible drug levels in other cells. The introduction of nanotechnology has addressed some of these problems and opened up new avenues for improved cancer therapy. The design of nanoparticles for DDS takes into consideration issues such as targeting, controlled drug release and enhanced penetration via biological barriers. In this review we describe the design principles of targeted DDS for cancer therapy and the types of nanoparticles that are under development. Emphasis is put on lipid-based nanoparticles, particularly bolaamphiphilic vesicles that have tremendous potential in delivering therapeutic and diagnostic agents to specific cells following systemic administration.
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Affiliation(s)
- Sarina Grinberg
- Department of Chemistry, Ben-Gurion University of the Negev, Israel
| | - Charles Linder
- Zuckerberg Water Institute and Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Israel
| | - Eliahu Heldman
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Israel
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Yang C, Li XM, Gilron J, Kong DF, Yin Y, Oren Y, Linder C, He T. CF4 plasma-modified superhydrophobic PVDF membranes for direct contact membrane distillation. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.01.013] [Citation(s) in RCA: 164] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Stern A, Guidotti M, Shaubi E, Popov M, Linder C, Heldman E, Grinberg S. Steric environment around acetylcholine head groups of bolaamphiphilic nanovesicles influences the release rate of encapsulated compounds. Int J Nanomedicine 2014; 9:561-74. [PMID: 24531296 PMCID: PMC3901739 DOI: 10.2147/ijn.s53563] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Two bolaamphiphilic compounds with identical acetylcholine (ACh) head groups, but with different lengths of an alkyl chain pendant adjacent to the head group, as well as differences between their hydrophobic skeleton, were investigated for their ability to self-assemble into vesicles that release their encapsulated content upon hydrolysis of their head groups by acetylcholinesterase (AChE). One of these bolaamphiphiles, synthesized from vernolic acid, has an alkyl chain pendant of five methylene groups, while the other, synthesized from oleic acid, has an alkyl chain pendant of eight methylene groups. Both bolaamphiphiles formed stable spherical vesicles with a diameter of about 130 nm. The ACh head groups of both bolaamphiphiles were hydrolyzed by AChE, but the hydrolysis rate was significantly faster for the bolaamphiphile with the shorter aliphatic chain pendant. Likewise, upon exposure to AChE, vesicles made from the bolaamphiphile with the shorter alkyl chain pendant released their encapsulated content faster than vesicles made from the bolaamphiphile with the longer alkyl chain pendant. Our results suggest that the steric environment around the ACh head group of bolaamphiphiles is a major factor affecting the hydrolysis rate of the head groups by AChE. Attaching an alkyl chain to the bolaamphiphile near the ACh head group allows self-assembled vesicles to form with a controlled release rate of the encapsulated materials, whereas shorter alkyl chains enable a faster head group hydrolysis, and consequently faster release, than longer alkyl chains. This principle may be implemented in the design of bolaamphiphiles for the formation of vesicles for drug delivery with desired controlled release rates.
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Affiliation(s)
- Avital Stern
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Matteo Guidotti
- Istituto di Scienze e Tecnologie Molecolari-CNR, Milano, Italy
| | - Eleonora Shaubi
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Mary Popov
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Charles Linder
- Zuckerberg Water Institute and Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Eliahu Heldman
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Sarina Grinberg
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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Mbuli BS, Nxumalo EN, Krause RW, Pillay VL, Oren Y, Linder C, Mamba BB. Modification of polyamide thin-film composite membranes with amino-cyclodextrins and diethylamino-cyclodextrins for water desalination. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2013.09.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mbuli BS, Nxumalo EN, Mhlanga SD, Krause RW, Pillay VL, Oren Y, Linder C, Mamba BB. Development of antifouling polyamide thin-film composite membranes modified with amino-cyclodextrins and diethylamino-cyclodextrins for water treatment. J Appl Polym Sci 2013. [DOI: 10.1002/app.40109] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Bhekani S. Mbuli
- Department of Applied Chemistry; University of Johannesburg; Doornfontein 2028 South Africa
| | - Edward N. Nxumalo
- Department of Applied Chemistry; University of Johannesburg; Doornfontein 2028 South Africa
| | - Sabelo D. Mhlanga
- Department of Applied Chemistry; University of Johannesburg; Doornfontein 2028 South Africa
| | - Rui W. Krause
- Department of Applied Chemistry; University of Johannesburg; Doornfontein 2028 South Africa
| | - Visvanathan L. Pillay
- Department of Process Engineering; Stellenbosch University; Matieland 7600 South Africa
| | - Yoram Oren
- Department of Desalination and Water Treatment; Zuckerberg Institute for Water Research, Ben-Gurion University of the Negev; Beer-Sheva 84109 Israel
| | - Charles Linder
- Department of Desalination and Water Treatment; Zuckerberg Institute for Water Research, Ben-Gurion University of the Negev; Beer-Sheva 84109 Israel
| | - Bhekie B. Mamba
- Department of Applied Chemistry; University of Johannesburg; Doornfontein 2028 South Africa
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Philosof-Mazor L, Dakwar GR, Popov M, Kolusheva S, Shames A, Linder C, Greenberg S, Heldman E, Stepensky D, Jelinek R. Bolaamphiphilic vesicles encapsulating iron oxide nanoparticles: New vehicles for magnetically targeted drug delivery. Int J Pharm 2013; 450:241-9. [DOI: 10.1016/j.ijpharm.2013.04.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 04/09/2013] [Accepted: 04/11/2013] [Indexed: 01/15/2023]
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Kim T, Afonin KA, Viard M, Koyfman AY, Sparks S, Heldman E, Grinberg S, Linder C, Blumenthal RP, Shapiro BA. In Silico, In Vitro, and In Vivo Studies Indicate the Potential Use of Bolaamphiphiles for Therapeutic siRNAs Delivery. Mol Ther Nucleic Acids 2013; 2:e80. [PMID: 23511334 PMCID: PMC3615820 DOI: 10.1038/mtna.2013.5] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Specific small interfering RNAs (siRNAs) designed to silence different oncogenic pathways can be used for cancer therapy. However, non-modified naked siRNAs have short half-lives in blood serum and encounter difficulties in crossing biological membranes due to their negative charge. These obstacles can be overcome by using siRNAs complexed with bolaamphiphiles, consisting of two positively charged head groups that flank an internal hydrophobic chain. Bolaamphiphiles have relatively low toxicities, long persistence in the blood stream, and most importantly, in aqueous conditions can form poly-cationic micelles thus, becoming amenable to association with siRNAs. Herein, two different bolaamphiphiles with acetylcholine head groups attached to an alkyl chain in two distinct configurations are compared for their abilities to complex with siRNAs and deliver them into cells inducing gene silencing. Our explicit solvent molecular dynamics (MD) simulations showed that bolaamphiphiles associate with siRNAs due to electrostatic, hydrogen bonding, and hydrophobic interactions. These in silico studies are supported by various in vitro and in cell culture experimental techniques as well as by some in vivo studies. Results demonstrate that depending on the application, the extent of siRNA chemical protection, delivery efficiency, and further intracellular release can be varied by simply changing the type of bolaamphiphile used.
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Affiliation(s)
- Taejin Kim
- Center for Cancer Research Nanobiology Program, National Cancer Institute, Frederick, Maryland, USA
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Kaufman Y, Grinberg S, Linder C, Heldman E, Gilron J, Freger V. Fusion of bolaamphiphile micelles: a method to prepare stable supported biomimetic membranes. Langmuir 2013; 29:1152-61. [PMID: 23281661 DOI: 10.1021/la304484p] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Supported biomimetic membranes (SBMs) on solid substrates have been commonly prepared from vesicle-forming double-tail lipids, such as zwitterionic phospholipids, using the method of vesicle fusion. Here we report on the preparation of SBMs on silica surfaces via a similar process of "micelle fusion" from a cationic single-tail bolaamphiphile GLH-20 that forms spherical and elongated thread-like micelles in solution. We demonstrate that, in contrast to zwitterionic phospholipids, GLH-20 self-assembles into a stable contiguous SBM at both low and high ionic strengths. The cationic charge of GLH-20 promotes the formation of a stable SBM through enhanced double-layer interactions with the negatively charged silica surface. It is also shown that spinach aquaporin PM-28 was successfully incorporated within bolaamphiphile SBM in a manner similar to SBMs prepared by vesicle/proteoliposome fusion; thereby the inherent curvature of the micelle surface does not inhibit protein reconstitution. The results suggest that SBMs based on charged bolaamphiphiles might be an attractive platform for applications such as water purification and biosensors, where the stability and low defect rate of SBMs in diverse conditions are crucial for achieving desired performance.
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Affiliation(s)
- Y Kaufman
- Albert Katz International School for Desert Studies and Unit of Environmental Engineering, Ben-Gurion University of the Negev, Sde-Boqer, Israel
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Mbuli BS, Dlamini DS, Nxumalo EN, Krause RW, Pillay VL, Oren Y, Linder C, Mamba BB. Preparation and characterization of thin film composite membranes modified with amine-functionalized β-cyclodextrins. J Appl Polym Sci 2012. [DOI: 10.1002/app.38667] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Spira D, Adam P, Linder C, Spira SM, Pintoffl J, Claussen CD, Horger M. Perfusion und K-trans als potentielle Differenzierungsparameter von follikulären und diffus-großzelligen B-Zell-Lymphomen - Volumen-Perfusions-CT und Versuch einer histopathologischen Erklärung. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Popov M, Linder C, Deckelbaum RJ, Grinberg S, Hansen IH, Shaubi E, Waner T, Heldman E. Cationic vesicles from novel bolaamphiphilic compounds. J Liposome Res 2012; 20:147-59. [PMID: 19848552 DOI: 10.3109/08982100903218900] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Effective targeted drug delivery by cationic liposomes is difficult to achieve because of their rapid clearance from the blood circulation. Bolaamphiphiles that form monolayer membrane may provide vesicles with improved stability, as shown for archaeosomes. We investigated a series of bolaamphiphiles with acetylcholine head groups and systematic structural changes in their hydrophobic domain for their ability to form stable nanovesicles. Bolaamphiphiles with two aliphatic chains separated by a short amide midsection produced spherical nanovesicles ranging in diameter from 80 to 120 nm. These vesicles lost their encapsulated material within 24 hours of incubation in phosphate-buffered saline (PBS). Similar bolaamphiphiles with a longer midsection produced a mixture of fibers and more stable nanovesicles. Bolaamphiphiles with ester amide midsection produced only spherical nanovesicles that were stable during incubation in PBS for several days. Vesicles made from bolaamphiphiles with acetylcholine head groups conjugated to the aliphatic chain via the amine were less stable than vesicles made from bolaamphiphiles with head groups conjugated to the aliphatic chain via the acetyl group. Vesicles that were stable in vitro showed good stability in the blood circulation after intravenous administration to mice. These results help in elucidating the bolaamphiphile structures needed to form stable cationic vesicles for targeted drug delivery.
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Affiliation(s)
- Mary Popov
- Department of Clinical Biochemistry, Ben-Gurion University, Beer Sheva, Israel
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Dakwar GR, Abu Hammad I, Popov M, Linder C, Grinberg S, Heldman E, Stepensky D. Delivery of proteins to the brain by bolaamphiphilic nano-sized vesicles. J Control Release 2012; 160:315-21. [PMID: 22261280 DOI: 10.1016/j.jconrel.2011.12.042] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2011] [Revised: 12/21/2011] [Accepted: 12/24/2011] [Indexed: 12/18/2022]
Abstract
Bolaamphiphilic cationic vesicles with acetylcholine (ACh) surface groups were investigated for their ability to deliver a model protein-bovine serum albumin conjugated to fluorescein isothiocyanate (BSA-FITC) across biological barriers in vitro and in vivo. BSA-FITC-loaded vesicles were internalized into cells in culture, including brain endothelial b.End3 cells, at 37 °C, but not at 4 °C, indicating an active uptake process. To examine if BSA-FITC-loaded vesicles were stable enough for in vivo delivery, we tested vesicle stability in whole serum. The half-life of cationic BSA-FITC-loaded vesicles with ACh surface groups that are hydrolyzed by choline esterase (ChE) was about 2 h, whereas the half-life of vesicles with similar surface groups, but which are not hydrolyzed by choline esterase (ChE), was over 5 h. Pyridostigmine, a choline esterase inhibitor that does not penetrate the blood-brain barrier (BBB), increased the stability of the ChE-sensitive vesicles to 6 h but did not affect the stability of vesicles with ACh surface groups that are not hydrolyzed by ChE. Following intravenous administration to pyridostigmine-pretreated mice, BSA-FITC encapsulated in ChE-sensitive vesicles was distributed into various tissues with marked accumulation in the brain, whereas non-encapsulated (free) BSA-FITC was detected only in peripheral tissues, but not in the brain. These results show that cationic bolaamphiphilic vesicles with ACh head groups are capable of delivering proteins across biological barriers, such as the cell membrane and the blood-brain barrier (BBB). Brain ChE activity destabilizes the vesicles and releases the encapsulated protein, enabling its accumulation in the brain.
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Affiliation(s)
- George R Dakwar
- Department of Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Israel
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Hutter T, Linder C, Heldman E, Grinberg S. Interfacial and self-assembly properties of bolaamphiphilic compounds derived from a multifunctional oil. J Colloid Interface Sci 2012; 365:53-62. [DOI: 10.1016/j.jcis.2011.08.057] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2011] [Revised: 08/11/2011] [Accepted: 08/23/2011] [Indexed: 10/17/2022]
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Popov M, Grinberg S, Linder C, Waner T, Levi-Hevroni B, Deckelbaum RJ, Heldman E. Site-directed decapsulation of bolaamphiphilic vesicles with enzymatic cleavable surface groups. J Control Release 2011; 160:306-14. [PMID: 22226780 DOI: 10.1016/j.jconrel.2011.12.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 12/16/2011] [Accepted: 12/17/2011] [Indexed: 12/20/2022]
Abstract
Stable nano-sized vesicles with a monolayer encapsulating membrane were prepared from novel bolaamphiphiles with choline ester head groups. The head groups were covalently bound to the alkyl chain of the bolaamphiphiles either via the nitrogen atom of the choline moiety, or via the choline ester's methyl group. Both types of bolaamphiphiles competed with acetylthiocholine for binding to acetylcholine esterase (AChE), yet, only the choline ester head groups bound to the alkyl chain via the nitrogen atom of the choline moiety were hydrolyzed by the enzyme. Likewise, only vesicles composed of bolaamphiphiles with head groups that were hydrolyzed by AChE released their encapsulated material upon exposure to the enzyme. Injection of carboxyfluorescein (CF)-loaded vesicles with cleavable choline ester head groups into mice resulted in the accumulation of CF in tissues that express high AChE activity, including the brain. By comparison, when vesicles with choline ester head groups that are not hydrolyzed by AChE were injected into mice, there was no accumulation of CF in tissues that highly express the enzyme. These results imply that bolaamphiphilic vesicles with surface groups that are substrates to enzymes which are highly expressed in target organs may potentially be used as a drug delivery system with controlled site-directed drug release.
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Affiliation(s)
- Mary Popov
- Department of Clinical Biochemistry, Ben-Gurion University of the Negev, Beer Sheva, Israel.
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Noren G, Chabat P, Meneses A, Linder C, González J. Translocation of an Intrauterine Contraceptive Device: Incidental Finding in the Vesicouterine Fold. J Minim Invasive Gynecol 2011. [DOI: 10.1016/j.jmig.2011.08.551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Grinberg S, Kipnis N, Linder C, Kolot V, Heldman E. Asymmetric bolaamphiphiles from vernonia oil designed for drug delivery. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.200900107] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Affiliation(s)
- V. Shapiro
- Department for Desalination and Water Treatment, Zuckerberg Institute for Water Research, and Unit of Environmental Engineering, Ben-Gurion University, P.O. Box 653, Beer-Sheva 84105, Israel
| | - V. Freger
- Department for Desalination and Water Treatment, Zuckerberg Institute for Water Research, and Unit of Environmental Engineering, Ben-Gurion University, P.O. Box 653, Beer-Sheva 84105, Israel
| | - C. Linder
- Department for Desalination and Water Treatment, Zuckerberg Institute for Water Research, and Unit of Environmental Engineering, Ben-Gurion University, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Y. Oren
- Department for Desalination and Water Treatment, Zuckerberg Institute for Water Research, and Unit of Environmental Engineering, Ben-Gurion University, P.O. Box 653, Beer-Sheva 84105, Israel
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Grinberg S, Kolot V, Linder C, Shaubi E, Kas'yanov V, Deckelbaum RJ, Heldman E. Synthesis of novel cationic bolaamphiphiles from vernonia oil and their aggregated structures. Chem Phys Lipids 2008; 153:85-97. [PMID: 18316039 DOI: 10.1016/j.chemphyslip.2008.01.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2007] [Revised: 01/10/2008] [Accepted: 01/18/2008] [Indexed: 11/30/2022]
Abstract
The present study describes the synthesis of a novel class of vesicle-forming bolaamphiphiles with choline ester head groups. These bolaamphiphiles were derived from vernonia oil, whose main constituent is vernolic acid, a fatty acid with a unique combination of epoxy, carboxy and unsaturated double bonds. A series of bolaamphiphiles containing amido or ester groups within the hydrophobic domain were synthesized from N,N'-alkylenebis (vernolamides) and alpha,omega-alkylene divernolate ester in a two-stage synthesis comprising opening of the epoxy ring with chloroacetic acid, followed by quaternization with N,N-dimethylaminoethyl acetate to form choline ester head groups. The products were characterized by FT-IR, (1)H and (13)C NMR, and ESI-MS. Vesicles prepared from these bolaamphiphiles have the potential to serve as a targeted drug delivery systems with selective decapsulation in the presence of the enzyme acetylcholine esterase, resulting in site-specific release of the drug.
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Affiliation(s)
- S Grinberg
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
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Wiesman Z, Dom NB, Sharvit E, Grinberg S, Linder C, Heldman E, Zaccai M. Novel cationic vesicle platform derived from vernonia oil for efficient delivery of DNA through plant cuticle membranes. J Biotechnol 2007; 130:85-94. [PMID: 17442442 DOI: 10.1016/j.jbiotec.2007.01.040] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2006] [Revised: 12/25/2006] [Accepted: 01/12/2007] [Indexed: 11/21/2022]
Abstract
Novel cationic amphiphilic compounds were prepared from vernonia oil, a natural epoxidized triglyceride, and studied with respect to vesicle formation, encapsulation of biomaterials such as DNA, and their physical stability and transport through isolated plant cuticle membranes. The amphiphiles studied were a single-headed compound III (a quaternary ammonium head group with two alkyl chains) and a triple-headed compound IV, which is essentially three molecules of compound III bound together through a glycerol moiety. Vesicles of the two amphiphiles, prepared by sonication in water and solutions of uranyl acetate or the herbicide 2,4-D (2,4-dichloropenoxy acetic acid), were examined by TEM, SEM, AFM, and confocal laser systems and had a spherical shape which encapsulated the solutes with diameters between 40 and 110 nm. Vesicles from amphiphile IV could be made large enough to encapsulate a condensed 5.2kb DNA plasmid (pJD328). Vesicles of amphiphile IV were also shown to pass intact across isolated plant cuticle membranes and the rate of delivery of encapsulated radio-labeled 2,4-D through isolated plant cuticle membranes obtained with these vesicles was clearly greater in comparison to liposomes prepared from dipalmitopyl phosphatidylcholine (DPPC) and the control, nonencapsulated 2,4-D. Vesicles from amphiphiles III and IV were found to be more stable than those of liposomes from DPPC. The data indicate the potential of vesicles prepared from the novel amphiphile IV to be a relatively efficient nano-scale delivery system to transport DNA and other bioactive agents through plant biological barriers. This scientific approach may open the way for further development of efficient in vivo plant transformation systems.
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Affiliation(s)
- Zeev Wiesman
- Phyto-Lipid Biotechnology Laboratory, Department of Biotechnology Engineering, Faculty of Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
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Linder C, Markus A. Advances in the Technology for Controlled-Release Pesticide Formulations. Drugs and the Pharmaceutical Sciences 2005. [DOI: 10.1201/9781420027990.ch2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Wersäll P, Blomgren H, Lax I, Kälkner KM, Linder C, Lundell G, Nilsson B, Nilsson S, Näslund I, Pisa P, Svedman C. 57 Extracranial Stereotactic Radiotherapy for Primary and Metastatic Renal Cell Carcinoma. Radiother Oncol 2005. [DOI: 10.1016/s0167-8140(05)81035-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Grinberg S, Linder C, Kolot V, Waner T, Wiesman Z, Shaubi E, Heldman E. Novel cationic amphiphilic derivatives from vernonia oil: synthesis and self-aggregation into bilayer vesicles, nanoparticles, and DNA complexants. Langmuir 2005; 21:7638-45. [PMID: 16089364 DOI: 10.1021/la050091j] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Self-assembling nanostructures were prepared from novel cationic amphiphilic compounds synthesized from vernonia oil, a natural epoxydized triglyceride. The presence of a 12,13-epoxy group on the C18 unsaturated fatty acid, vernolic acid, which is the main constituent of vernonia oil, permitted the synthesis of novel amphiphilic derivatives with a hydrogen-bonding hydroxyl and a cationic headgroup moiety on adjacent carbon atoms. The amphiphiles were prepared in a two-stage synthesis that comprised opening of the epoxy groups with a haloacetic acid, followed by quaternization of the halo group with a tertiary amine containing a C12 aliphatic chain. Intact vernonia oil as the starting material gave a triple-headed cationic amphiphile, containing three vernolic acid derived moieties connected through a glycerol backbone. A single-headed amphiphile with two alkyl chains and a single quaternary ammonium headgroup was synthesized from the methyl ester of vernolic acid as the starting material. The triple-headed derivative could form nonencapsulating structures. Cholesterol was required in the formulation (1:1) to make spherical vesicles that could encapsulate a water-soluble marker. The single-headed derivative, however, formed spherical encapsulating vesicles without cholesterol. TEM, NMR, and FT-IR were used to characterize the vesicles, and molecular structure vs morphology relationships were postulated on the basis of these data. The triple-headed amphiphile also formed a DNA complex that was highly resistant to hydrolysis by DNase. This amphiphile-DNA complex was used as vector for gene transfer in cell culture demonstrating efficient DNA transfection.
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Affiliation(s)
- S Grinberg
- The Institutes for Applied Research, and The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
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Linder C, Linder S, Munck-Wikland E, Auer G, Aspenblad U, Strander H. Evaluation of tissue and serum VEGF in patients with head and neck carcinoma. Angiogenesis 2003; 2:365-72. [PMID: 14517456 DOI: 10.1023/a:1009211605162] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Serum vascular endothelial growth factor (VEGF) was measured in 54 cancer patients with head and neck carcinoma. In addition, tumor VEGF was examined by immunohistochemistry in sections of biopsies obtained within 4 weeks to serum sampling in 37 of these patients. Serum VEGF levels were higher in the sera of the tumor patients than in the sera of healthy control subjects (P < 0.005). Patients with stage II-IV tumors showed increased levels of serum VEGF, whereas patients with stage I tumors did not. The receiver operating characteristics (ROC) of serum VEGF were similar to those observed with TPS (tissue protein specific antigen). Immunohistochemistry of tissue sections showed that 24/37 tumors were VEGF positive. No connection was observed between strong VEGF staining of tumor tissue sections and high levels of serum VEGF. We conclude that serum VEGF could be a useful marker for monitoring head and neck carcinoma patients, but that serum and tissue VEGF levels do not appear to correlate with each other.
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Affiliation(s)
- C Linder
- Radiumhemmets Research Laboratory, Stockholm, Sweden
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