1
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Wang Y, Jiang J, Ding Z, Zhang T, Shi Y, Huang X, Shen X. Design, synthesis, and in vitro gene transfer efficacy of novel ionizable cholesterol derivatives. J Liposome Res 2024:1-13. [PMID: 38563474 DOI: 10.1080/08982104.2024.2333755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 03/18/2024] [Indexed: 04/04/2024]
Abstract
ABSTACTThe medicinal properties of genetic drugs are highly dependent on the design of delivery systems. Ionizable cationic lipids are considered core materials in delivery systems. However, there has not yet been a widespread consensus on the relationship between the wide diversity of lipid structure design and gene delivery efficiency. The aims of the research work were to synthesize ionizable cholesterol derivatives (iChol-lipids) and to evaluate their potential applications as gene delivery vector. A series of iChol-lipids with different head groups were synthesized with carbamate bond spacer. The chemical structures were characterized by 1H NMR, MS, melting range, and pKa. The interactions between iChol-lipids and MALAT1-siRNA were studied by molecular dynamics simulations and compared with market available DC-Chol, which revealed that hydrogen bonds, salt-bridge, and electrostatic interaction were probably involved. The self-assemble behaviors of these lipids were intensively investigated and evaluated by dynamic laser scattering in the presence of different helper lipids and PEGylated lipids. Their plasmid binding ability, transfection efficiency, hemolytic toxicity, and cytotoxicity were fully studied. IZ-Chol-LNPs was proved to be highly potential to effectively complex with DNA, and endosome escape mechanisms mediated by proton sponge effect was verified by pH-sensitive fluorescence probe BCFL.
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Affiliation(s)
- Yajing Wang
- School of Pharmacy, Changzhou University, Changzhou, PR China
| | - Jiahui Jiang
- School of Pharmacy, Changzhou University, Changzhou, PR China
| | - Ziwei Ding
- School of Pharmacy, Changzhou University, Changzhou, PR China
| | - Tao Zhang
- School of Pharmacy, Changzhou University, Changzhou, PR China
| | - Yingying Shi
- School of Pharmacy, Changzhou University, Changzhou, PR China
| | - Xianfeng Huang
- School of Pharmacy, Changzhou University, Changzhou, PR China
| | - Xiaozhong Shen
- Guangdong Food and Drug Vocational College, Guangzhou, PR China
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2
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Sarkar S, Moitra P, Bhattacharya S. Structure-activity relationship of drug conjugated polymeric materials against uropathogenic bacteria colonization under in vitro and in vivo settings. J Mater Chem B 2023; 12:187-201. [PMID: 38059523 DOI: 10.1039/d3tb01841e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
The human world has been plagued with different kinds of bacterial infections from time immemorial. The increased development of resistance towards commercial antibiotics has made these bacterial infections an even more critical challenge. Bacteria have modified their mode of interactions with different types of commercial drugs by bringing changes to the receptor proteins or by other resisting mechanisms like drug efflux. Various chemical approaches have been made to date to fight against these smart adapting species. Towards this, we hypothesize chemically modifying the commercial antibacterial drugs in order to deceive the bacteria and destroy the bacterial biomass. In this study, different molecular weight polyethyleneimines are taken and conjugated with some well-known commercial drugs like penicillin and chloramphenicol to explore their antibacterial properties against some of the laboratory and uro-pathogenic strains of Gram-positive and Gram-negative bacteria. A detailed structure-activity relationship of these polymeric prodrug-like materials has been evaluated to determine the optimum formulation. The standardized system not only shows significant ∼90% bacterial killing in liquid broth culture, but also demonstrates promising bacterial inhibition towards biofilm formation for the pathogenic strains on inanimate surfaces like urinary catheters and on an in vivo mouse skin abrasion model. The reported bioactive polymeric materials can be successfully used for widespread therapeutic applications with promising medical relevance.
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Affiliation(s)
- Sourav Sarkar
- School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India.
| | - Parikshit Moitra
- Department of Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Santanu Bhattacharya
- School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India.
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata 700032, India
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Srinivasapuram, Yerpedu Mandal, Tirupati District, Andhra Pradesh 517619, India
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3
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Pengnam S, Opanasopit P, Rojanarata T, Yingyongnarongkul BE, Thongbamrer C, Plianwong S. Dual-Targeted Therapy in HER2-Overexpressing Breast Cancer with Trastuzumab and Novel Cholesterol-Based Nioplexes Silencing Mcl-1. Pharmaceutics 2023; 15:2424. [PMID: 37896184 PMCID: PMC10610066 DOI: 10.3390/pharmaceutics15102424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/19/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
The challenge in HER2-overexpressing breast cancer therapy lies in creating an effective target therapy to overcome treatment resistance. Monoclonal antibodies and target gene silencing by siRNA are two potential strategies that have been widely developed for treating HER2-positive breast cancer. The siRNA delivery system is a crucial factor that influences siRNA therapy's success. In this study, lipid-based nanoparticles (cationic niosomes) composed of different cholesterol-based cationic lipids were formulated and characterized for delivering siRNA into HER2-overexpressing breast cancer cells. Niosomes containing a trimethylammonium headgroup showed the highest siRNA delivery efficiency with low toxicity. The myeloid cell leukemia-1 (Mcl-1) siRNA nioplex treatment significantly decreased mRNA expression and breast cancer cell growth. Dual-targeted therapy, consisting of treatment with an Mcl-1 siRNA nioplex and trastuzumab (TZ) solution, noticeably promoted cell-growth inhibition and apoptosis. The synergistic effect of dual therapy was also demonstrated by computer modeling software (CompuSyn version 1.0). These findings suggest that the developed cationic niosomes were effective nanocarriers for siRNA delivery in breast cancer cells. Furthermore, the Mcl-1 nioplex/TZ dual treatment establishes a synergistic outcome that may have the potential to treat HER2-overexpressing breast cancer.
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Affiliation(s)
- Supusson Pengnam
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; (S.P.); (P.O.); (T.R.)
| | - Praneet Opanasopit
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; (S.P.); (P.O.); (T.R.)
| | - Theerasak Rojanarata
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; (S.P.); (P.O.); (T.R.)
| | - Boon-ek Yingyongnarongkul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand; (B.-e.Y.); (C.T.)
| | - Chopaka Thongbamrer
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand; (B.-e.Y.); (C.T.)
| | - Samarwadee Plianwong
- Pharmaceutical Innovations of Natural Products Unit (PhInNat), Burapha University, Chonburi 20131, Thailand
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4
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Thongbamrer C, Teerakantrakorn P, Nongpong U, Apiratikul N, Roobsoong W, Kunkeaw N, Nguitragool W, Sattabongkot J, Yingyongnarongkul BE. In vitro transfection efficiencies of T-shaped spermine-based cationic lipids with identical and nonidentical tails under high serum conditions. Org Biomol Chem 2023; 21:1967-1979. [PMID: 36762533 DOI: 10.1039/d2ob02129c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
T-shaped spermine-based cationic lipids with identical and nonidentical hydrophobic tails having variable carbon lengths (from C10 to C18) were designed and synthesized. These lipids were characterized, and their structure-activity relationships were determined for DNA binding and transfection ability of these compounds when formulated as cationic liposomes. These liposomes were then applied as non-viral vectors to transfect HEK293T, HeLa, PC3, H460, HepG2, and Calu'3 cell lines with plasmid DNA encoding the green fluorescent protein. ST9, ST12 and ST13 with nonidentical tails could deliver DNA into HEK293T cells up to 60% under serum-free conditions. The lipid ST15 bearing nonidentical tails was found to be a potent gene transfer agent under 40% serum conditions in HEK293T and HeLa cells. Besides their low cytotoxicity, these lipoplexes also exhibited greater transfection efficiency than the commercially available transfection agent, Lipofectamine 3000.
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Affiliation(s)
- Chopaka Thongbamrer
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Ramkhamhaeng University, Bangkapi, Bangkok, 10240 Thailand
| | - Purichaya Teerakantrakorn
- Bodindecha (Sing Singhaseni) School, 40 Ramkhamhaeng 43/1, Plabpla Wangthonglang, Bangkok, 10310 Thailand.
| | - Ussanee Nongpong
- Bodindecha (Sing Singhaseni) School, 40 Ramkhamhaeng 43/1, Plabpla Wangthonglang, Bangkok, 10310 Thailand.
| | - Nuttapon Apiratikul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand
| | - Wanlapa Roobsoong
- Mahidol Vivax Research Unit, Faculty of Tropical Medicine, Mahidol University, Ratchathewi, Bangkok, 10400 Thailand
| | - Nawapol Kunkeaw
- Mahidol Vivax Research Unit, Faculty of Tropical Medicine, Mahidol University, Ratchathewi, Bangkok, 10400 Thailand
| | - Wang Nguitragool
- Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400 Thailand
| | - Jetsumon Sattabongkot
- Mahidol Vivax Research Unit, Faculty of Tropical Medicine, Mahidol University, Ratchathewi, Bangkok, 10400 Thailand
| | - Boon-Ek Yingyongnarongkul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Ramkhamhaeng University, Bangkapi, Bangkok, 10240 Thailand
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5
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Maiti B, Kumar K, Datta S, Bhattacharya S. Physical-Chemical Characterization of Bilayer Membranes Derived from (±) α-Tocopherol-Based Gemini Lipids and Their Interaction with Phosphatidylcholine Bilayers and Lipoplex Formation with Plasmid DNA. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:36-49. [PMID: 34955028 DOI: 10.1021/acs.langmuir.1c01039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Membrane formation and aggregation properties of two series of (±) α-tocopherol-based cationic gemini lipids without and with hydroxyl functionalities at the headgroup region (TnS n = 3, 4, 5, 6, 8, and 12; THnS n = 4, 5, 6, 8, and 12) with varying polymethylene spacer lengths were investigated extensively while comparing with the corresponding properties of the monomeric counterparts (TM and THM). Liposomal suspensions of each cationic lipid were characterized by dynamic light scattering (DLS), transmission electron microscopy (TEM), zeta potential measurements, and small-angle X-ray diffraction studies. The length of the spacer and the presence of hydroxyl functionalities at the headgroup region strongly contribute to the aggregation behavior of these gemini lipids in water. The interaction of each tocopherol lipid with a model phospholipid, 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC)-derived vesicles, was thoroughly examined by differential scanning calorimetry (DSC) and 1,6-diphenyl-1,3,5-hexatriene (DPH)-doped fluorescence anisotropy measurements. The binding efficiency of the cationic tocopherol liposomes with plasmid DNA (pDNA) was followed by an ethidium bromide (EB) exclusion assay and zeta potential measurements, whereas negatively charged micellar sodium dodecyl sulfate (SDS)-mediated release of the pDNA from various preformed pDNA-liposomal complexes (lipoplex) was studied by an ethidium bromide (EB) reintercalation assay. The structural transformation of pDNA upon complexation with liposome was characterized using circular dichroism (CD) spectroscopic measurements. Gemini lipid-pDNA interactions depend on both the presence of hydroxyl functionalities at the headgroups and the length of the spacer chain between the headgroups. Succinctly, we performed a detailed physical-chemical characterization of the membranes formed from cationic monomeric and gemini lipids bearing tocopherol as their hydrophobic backbone and describe the role of inserting the -OH group at the headgroup of such lipids.
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Affiliation(s)
- Bappa Maiti
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
- Technical Research Centre, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Krishan Kumar
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Subhasis Datta
- School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
- Technical Research Centre, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
- School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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6
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Phosphonodithioester-Amine Coupling as a Key Reaction Step for the Design of Cationic Amphiphiles Used for Gene Delivery. Molecules 2021; 26:molecules26247507. [PMID: 34946591 PMCID: PMC8707180 DOI: 10.3390/molecules26247507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 12/04/2022] Open
Abstract
A convergent synthesis of cationic amphiphilic compounds is reported here with the use of the phosphonodithioester–amine coupling (PAC) reaction. This versatile reaction occurs at room temperature without any catalyst, allowing binding of the lipid moiety to a polar head group. This strategy is illustrated with the use of two lipid units featuring either two oleyl chains or two-branched saturated lipid chains. The final cationic amphiphiles were evaluated as carriers for plasmid DNA delivery in four cell lines (A549, Calu3, CFBE and 16HBE) and were compared to standards (BSV36 and KLN47). These new amphiphilic derivatives, which were formulated with DOPE or DOPE-cholesterol as helper lipids, feature high transfection efficacies when associated with DOPE. The highest transfection efficacies were observed in the four cell lines at low charge ratios (CR = 0.7, 1 or 2). At these CRs, no toxic effects were detected. Altogether, this new synthesis scheme using the PAC reaction opens up new possibilities for investigating the effects of lipid or polar head groups on transfection efficacies.
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7
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Akram M, Lal H, Kabir-Ud-Din. Exploring the binding mode of ester-based cationic gemini surfactants with calf thymus DNA: A detailed physicochemical, spectroscopic and theoretical study. Bioorg Chem 2021; 119:105555. [PMID: 34923244 DOI: 10.1016/j.bioorg.2021.105555] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/29/2021] [Accepted: 12/09/2021] [Indexed: 12/21/2022]
Abstract
Gene therapy is a transfectant method for the treatment of hereditary disease, which transfers the gene mutation into the cells. In the view of the high prospects of utilization of cationic gemini surfactants as a non-viral vector for the gene transfection, we have made a comprehensive study on the interactions between a recently synthesized series of ester-functionalized cationic Cm-E2O-Cm gemini surfactants (m = 12, 14 and 16) with calf thymus deoxyribonucleic acid (ctDNA) utilizing various techniques. The micellization behavior of gemini surfactants has been altered in the presence of ctDNA. A series of measurements (fluorescence, UV-vis and time-resolved fluorescence) show that the quenching of ctDNA proceeds by a static mechanism. The competitive displacement studies (EB, AO and HO), KI quenching analysis, CD studies and viscosity measurements suggested intercalative binding mode in a stoichiometry ratio of 1:1 with the Kb (binding constant) order being: C16-E2O-C16 > C14-E2O-C14 > C12-E2O-C12. The thermodynamic parameters show that the geminis interacted with ctDNA spontaneously through ionic/electrostatic interactions. Furthermore, the theoretical approaches offer accurate insights about the binding of gemini surfactants with DNA, and are in consistence with the experimental results.
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Affiliation(s)
- Mohd Akram
- Department of Chemistry, Aligarh Muslim University, Aligarh-202002, India.
| | - Hira Lal
- Department of Chemistry, Aligarh Muslim University, Aligarh-202002, India
| | - Kabir-Ud-Din
- Department of Chemistry, College of Natural and Computational Sciences, Arba Minch University, Arba Minch, Ethiopia
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8
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Asfiya R, Maiti B, Kamra M, Karande AA, Bhattacharya S. Novel α-tocopherol-ferrocene conjugates for the specific delivery of transgenes in liver cancer cells under high serum conditions. Biomater Sci 2021; 9:7636-7647. [PMID: 34676384 DOI: 10.1039/d1bm00607j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The delivery of therapeutic genes to a specific organ has drawn significant research attention. Among the pool of various delivery vectors, cationic liposomes (non-viral) are potential candidates for delivering therapeutic genes due to their low immunogenic response. Here, we have developed novel ferrocene-conjugated cationic tocopheryl aggregates as non-viral vectors. These formulations can transfer a reporter gene (pGL3; encoded for luciferase protein) specifically to liver cancer cells (HepG2 and Huh7) instead of non-hepatic cancer cells, such as Caco-2 (human colon carcinoma) and HeLa (cervical cancer) cells. The transfection efficiency (TE) of the optimum liposomal formulation is more significant than commercially available Lipofectamine 2000 (L2K). Notably, it retains its TE under high serum conditions (up to 50% FBS). A coupled effect from conjugated ferrocene and tocopherol in the cationic liposomal formulation might be responsible for the cell-specific delivery and higher serum compatibility. Therefore, the present proposed delivery system may provide a platform for further progress in terms of developing hepatotropic gene delivery systems.
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Affiliation(s)
- Rahmat Asfiya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India.
| | - Bappa Maiti
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata 700 032, India
| | - Mohini Kamra
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India.
| | - Anjali Anoop Karande
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India. .,Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata 700 032, India.,School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata 700 032, India
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9
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Maiti B, Bhattacharya S. Liposomal nanoparticles based on steroids and isoprenoids for nonviral gene delivery. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2021; 14:e1759. [PMID: 34729941 DOI: 10.1002/wnan.1759] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 07/24/2021] [Accepted: 08/10/2021] [Indexed: 11/11/2022]
Abstract
Natural lipid molecules are an essential part of life as they constitute the membrane of cells and organelle. In most of these cases, the hydrophobicity of natural lipids is contributed by alkyl chains. Although natural lipids with a nonfatty acid hydrophobic backbone are quite rare, steroids and isoprenoids have been strong candidates as part of a lipid. Over the years, these natural molecules (steroid and isoprenoids) have been used to make either lipid-based nanoparticle or functionalize in such a way that it could form nano assembly alone for therapeutic delivery. Here we mainly focus on the synthetic functionalized version of these natural molecules which forms cationic liposomal nanoparticles (LipoNPs). These cationic LipoNPs were further used to deliver various negatively charged genetic materials in the form of pDNA, siRNA, mRNA (nucleic acids), and so on. This article is categorized under: Biology-Inspired Nanomaterials > Lipid-Based Structures.
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Affiliation(s)
- Bappa Maiti
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata, India
| | - Santanu Bhattacharya
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata, India.,School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata, India.,Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
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10
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Misra SK, Moitra P, Kondaiah P, Bhattacharya S. Breaking the Barrier of Polynucleotide Size, Type, and Topology in Smad2 Antisense Therapy Using a Cationic Cholesterol Dimer with Flexible Spacer. ACS APPLIED BIO MATERIALS 2020; 3:7712-7721. [DOI: 10.1021/acsabm.0c00924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Santosh K. Misra
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India
| | - Parikshit Moitra
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata 700032, India
- Department of Pediatrics, Center for Blood Oxygen Transport and Hemostasis, School of Medicine, Health Sciences Facility III, University of Maryland Baltimore, 670 W Baltimore St, Baltimore, Maryland 21201, United States
| | - Paturu Kondaiah
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India
- Technical Research Centre, Indian Association for the Cultivation of Science, Kolkata 700032, India
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
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11
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Bulbake U, Kommineni N, Ionov M, Bryszewska M, Khan W. Comparison of cationic liposome and PAMAM dendrimer for delivery of anti-Plk1 siRNA in breast cancer treatment. Pharm Dev Technol 2020; 25:9-19. [PMID: 30633621 DOI: 10.1080/10837450.2019.1567763] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 01/02/2019] [Accepted: 01/05/2019] [Indexed: 12/30/2022]
Abstract
Delivery of negatively charged, high molecular weight and unstable siRNA is difficult. The present study describes the development and comparison of cationic liposomes (CLs) and polyamidoamine (PAMAM) dendrimer generation 4 (PG4) nanocarriers of gene for cancer therapy. CLs and PG4 were complexed with anticancer siRNA (siPlk1) to form siPlk1-CLs lipoplex and siPlk1-PG4 dendriplex. siPlk1-CLs/PG4 complexes were characterized for average particle size, zeta potential, fluorescence and integrity of siPlk1 by agarose gel electrophoresis, ethidium bromide intercalation assay, circular dichroism, protection against RNase and stability in serum. The complexation of CLs/siPlk1 and PG4/siPlk1 were at a 100/1 and 2/1 charge ratio respectively. The CLs and PG4 were effective in protecting siPlk1 from RNase activity, also they enhanced the siPlk1 serum stability. Additionally, siPlk1-CLs and siPlk1-PG4 were evaluated by cell culture studies. In vitro anticancer activity study using MCF-7 cells showed that siPlk1-CLs and siPlk1-PG4 causes nearly similar cell death. Both siPlk1-CLs and siPlk1-PG4 resulted in enhanced cellular uptake of siPlk1 in MDA-MB-231 cells compared to naked siPlk1 solution. Cell cycle analysis suggested that increased cell population arrest in subG1 phase by siPlk1-CLs and siPlk1-PG4 compared to naked siPlk1 solution. These observations suggested that CLs and PG4 can be a potential carrier for siPlk1 delivery in breast cancer treatment.
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Affiliation(s)
- Upendra Bulbake
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Nagavendra Kommineni
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Maksim Ionov
- Department of General Biophysics, Faculty of Biology and Enviromental Protection, University of Lodz, Lodz, Poland
| | - Maria Bryszewska
- Department of General Biophysics, Faculty of Biology and Enviromental Protection, University of Lodz, Lodz, Poland
| | - Wahid Khan
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
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12
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Maiti B, Kumar K, Moitra P, Kondaiah P, Bhattacharya S. Reduction Responsive Nanovesicles Derived from Novel α-Tocopheryl-Lipoic Acid Conjugates for Efficacious Drug Delivery to Sensitive and Drug Resistant Cancer Cells. Bioconjug Chem 2018; 29:255-266. [PMID: 29268009 DOI: 10.1021/acs.bioconjchem.7b00497] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Two novel α-tocopheryl-lipoic acid conjugates (TL1 and TL2) were synthesized for the anticancer drug, doxorubicin (DOX), delivery. Both conjugates were able to form stable nanovesicles. The critical aggregation concentration (CAC) was determined using 4-(N,N-dimethylamino)cinnamaldehyde (DMACA) as a fluorescence probe. Formation of highly packed nanovesicles was characterized by 1,6-diphenyl-1,3,5-hexatriene (DPH) fluorescence anisotropy and microviscosity measurements. The morphologies of nanovesicles were visualized by transmission electron microscopy (TEM) and atomic force microscopy (AFM). The response of nanovesicles to reducing environment of cells was probed by the addition of dithiothreitol (DTT), which was followed by the increase in the hydrodynamic diameter under dynamic light scattering (DLS) measurements. The encapsulation efficiency of a commonly used anticancer drug, doxorubicin (DOX), in nanovesicles was found to be ∼60% and ∼55% for TL1 and TL2, respectively (TL1-DOX and TL2-DOX). Also, the cumulative drug (DOX) release from DOX-encapsulated nanovesicles in response to biological reducing agent glutathione (GSH) was ∼50% and ∼40% for TL1-DOX and TL2-DOX, respectively, over a period of 10 h. Both TL1-DOX and TL2-DOX delivered the anticancer drug, doxorubicin (DOX), across the DOX-sensitive and DOX-resistant HeLa (HeLa-DOXR) cells in an efficient manner and significantly more efficaciously than the drug alone treatments, especially in HeLa-DOXR cells. The nanovesicle mediated DOX treatment also showed significantly higher cell death when compared to DOX alone treatment in HeLa-DOXR cells. Blood compatibility of the nanovesicles was supported from clotting time, hemolysis, and red blood cell (RBC) aggregation experiments for their potential in vivo applications. Concisely, we present biocompatible and responsive nanovesicles for efficacious drug delivery to drug-sensitive and drug-resistant cancer cells.
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Affiliation(s)
- Bappa Maiti
- Department of Organic Chemistry and ‡Department of Molecular Reproduction, Development, and Genetics, Indian Institute of Science , Bangalore 560012, India.,Director's Research Unit and ∥Technical Research Centre, Indian Association for the Cultivation of Science , Kolkata 700032, India
| | - Krishan Kumar
- Department of Organic Chemistry and ‡Department of Molecular Reproduction, Development, and Genetics, Indian Institute of Science , Bangalore 560012, India.,Director's Research Unit and ∥Technical Research Centre, Indian Association for the Cultivation of Science , Kolkata 700032, India
| | - Parikshit Moitra
- Department of Organic Chemistry and ‡Department of Molecular Reproduction, Development, and Genetics, Indian Institute of Science , Bangalore 560012, India.,Director's Research Unit and ∥Technical Research Centre, Indian Association for the Cultivation of Science , Kolkata 700032, India
| | - Paturu Kondaiah
- Department of Organic Chemistry and ‡Department of Molecular Reproduction, Development, and Genetics, Indian Institute of Science , Bangalore 560012, India.,Director's Research Unit and ∥Technical Research Centre, Indian Association for the Cultivation of Science , Kolkata 700032, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry and ‡Department of Molecular Reproduction, Development, and Genetics, Indian Institute of Science , Bangalore 560012, India.,Director's Research Unit and ∥Technical Research Centre, Indian Association for the Cultivation of Science , Kolkata 700032, India
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Misra SK, Bhattacharya S. Physical Chemical and Biomolecular Methods for the Optimization of Cationic Lipid-Based Lipoplexes In Vitro for the Gene Therapy Applications. Methods Mol Biol 2018; 1445:3-17. [PMID: 27436309 DOI: 10.1007/978-1-4939-3718-9_1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Preparation and application protocols play a very important role while optimizing the cationic lipid-based lipoplexes in vitro. These protocols serve as the basis for the betterment of the lipoplexes with regard to their successful application in animals and eventually human subjects. Starting from the chemical structures of used cationic lipids (CLs), optimization of the additive inclusions, methods of nanoparticle (lipoplex) formation, presence of blood serum, time intervals of lipoplex incubation, and type of efficiency read-outs in various conditions play important roles in reaching insightful conclusions. Such steps of summarizing protocols and requirements of the pertinent events focus on getting improved lipoplexes for achieving optimal effects in terms of post transfection gene and protein expression. The progression of optimization and efficiency evaluation lead to predictable structure-method-activity relationship with involvement of various feedback principles including physical chemical and biomolecular evaluations before and after the use of lipoplexes in biological systems. This chapter discusses some of the focused strategies for the establishment of lipoplexes for a better post transfection activity with reduced risk of failure.
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Affiliation(s)
- Santosh K Misra
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560 012, India
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Champaign, IL, 61801, USA
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560 012, India.
- Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, India.
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14
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Maiti B, Kamra M, Karande AA, Bhattacharya S. Transfection efficiencies of α-tocopherylated cationic gemini lipids with hydroxyethyl bearing headgroups under high serum conditions. Org Biomol Chem 2018; 16:1983-1993. [DOI: 10.1039/c7ob02835k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Liposomal gene transfection under high serum conditions.
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Affiliation(s)
- Bappa Maiti
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
- Director's Research Unit
| | - Mohini Kamra
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Anjali A. Karande
- Department of Biochemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Santanu Bhattacharya
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
- Director's Research Unit
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15
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Zylberberg C, Gaskill K, Pasley S, Matosevic S. Engineering liposomal nanoparticles for targeted gene therapy. Gene Ther 2017; 24:441-452. [PMID: 28504657 DOI: 10.1038/gt.2017.41] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 05/08/2017] [Accepted: 05/10/2017] [Indexed: 02/07/2023]
Abstract
Recent mechanistic studies have attempted to deepen our understanding of the process by which liposome-mediated delivery of genetic material occurs. Understanding the interactions between lipid nanoparticles and cells is still largely elusive. Liposome-mediated delivery of genetic material faces systemic obstacles alongside entry into the cell, endosomal escape, lysosomal degradation and nuclear uptake. Rational design approaches for targeted delivery have been developed to reduce off-target effects and enhance transfection. These strategies, which have included the modification of lipid nanoparticles with target-specific ligands to enhance intracellular uptake, have shown significant promise at the proof-of-concept stage. Control of physical and chemical specifications of liposome composition, which includes lipid-to-DNA charge, size, presence of ester bonds, chain length and nature of ligand complexation, is integral to the performance of targeted liposomes as genetic delivery agents. Clinical advances are expected to rely on such systems in the therapeutic application of liposome nanoparticle-based gene therapy. Here, we discuss the latest breakthroughs in the development of targeted liposome-based agents for the delivery of genetic material, paying particular attention to new ligand and cationic lipid design as well as recent in vivo advances.
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Affiliation(s)
| | | | - S Pasley
- Akron Biotech, Boca Raton, FL, USA
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16
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Misra SK, Moitra P, Kondaiah P, Bhattacharya S. Co-liposomes having anisamide tagged lipid and cholesteryl tryptophan trigger enhanced gene transfection in sigma receptor positive cells. Colloids Surf B Biointerfaces 2016; 142:130-140. [DOI: 10.1016/j.colsurfb.2016.02.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 01/24/2016] [Accepted: 02/22/2016] [Indexed: 01/19/2023]
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17
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Ju J, Huan ML, Wan N, Hou YL, Ma XX, Jia YY, Li C, Zhou SY, Zhang BL. Cholesterol derived cationic lipids as potential non-viral gene delivery vectors and their serum compatibility. Bioorg Med Chem Lett 2016; 26:2401-2407. [PMID: 27072908 DOI: 10.1016/j.bmcl.2016.04.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 03/20/2016] [Accepted: 04/05/2016] [Indexed: 12/16/2022]
Abstract
Cholesterol derivatives M1-M6 as synthetic cationic lipids were designed and the biological evaluation of the cationic liposomes based on them as non-viral gene delivery vectors were described. Plasmid pEGFP-N1, used as model gene, was transferred into 293T cells by cationic liposomes formed with M1-M6 and transfection efficiency and GFP expression were tested. Cationic liposomes prepared with cationic lipids M1-M6 exhibited good transfection activity, and the transfection activity was parallel (M2 and M4) or superior (M1 and M6) to that of DC-Chol derived from the same backbone. Among them, the transfection efficiency of cationic lipid M6 was parallel to that of the commercially available Lipofectamine2000. The optimal formulation of M1 and M6 were found to be at a mol ratio of 1:0.5 for cationic lipid/DOPE, and at a N/P charge mol ratio of 3:1 for liposome/DNA. Under optimized conditions, the efficiency of M1 and M6 is greater than that of all the tested commercial liposomes DC-Chol and Lipofectamine2000, even in the presence of serum. The results indicated that M1 and M6 exhibited low cytotoxicity, good serum compatibility and efficient transfection performance, having the potential of being excellent non-viral vectors for gene delivery.
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Affiliation(s)
- Jia Ju
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China; Department of Pharmacy, School of Stomatology, Fourth Military Medical University, Xi'an 710032, China
| | - Meng-Lei Huan
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Ning Wan
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Yi-Lin Hou
- Innovative Experimental College, Northwest A&F University, Yangling 712100, China
| | - Xi-Xi Ma
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Yi-Yang Jia
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Chen Li
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Si-Yuan Zhou
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Bang-Le Zhang
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
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18
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Gosangi M, Mujahid TY, Gopal V, Patri SV. Effects of heterocyclic-based head group modifications on the structure–activity relationship of tocopherol-based lipids for non-viral gene delivery. Org Biomol Chem 2016; 14:6857-70. [DOI: 10.1039/c6ob00974c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gene therapy, a promising strategy for the delivery of therapeutic nucleic acids, is greatly dependent on the development of efficient vectors.
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Affiliation(s)
| | | | - Vijaya Gopal
- CSIR-Centre for Cellular and Molecular Biology
- Hyderabad-500007
- India
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19
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Draghici B, Ilies MA. Synthetic Nucleic Acid Delivery Systems: Present and Perspectives. J Med Chem 2015; 58:4091-130. [DOI: 10.1021/jm500330k] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Bogdan Draghici
- Department
of Pharmaceutical Sciences and Moulder Center for Drug Discovery Research, Temple University School of Pharmacy, 3307 North Broad Street, Philadelphia, Pennsylvania 19140, United States
| | - Marc A. Ilies
- Department
of Pharmaceutical Sciences and Moulder Center for Drug Discovery Research, Temple University School of Pharmacy, 3307 North Broad Street, Philadelphia, Pennsylvania 19140, United States
- Temple Materials Institute, 1803 North Broad Street, Philadelphia, Pennsylvania 19122, United States
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20
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Vitiello G, Luchini A, D'Errico G, Santamaria R, Capuozzo A, Irace C, Montesarchio D, Paduano L. Cationic liposomes as efficient nanocarriers for the drug delivery of an anticancer cholesterol-based ruthenium complex. J Mater Chem B 2015; 3:3011-3023. [DOI: 10.1039/c4tb01807a] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Cationic nanovectors loaded with Ru-based nucleolipids exert a high growth-inhibitory activity against human cancer cells (MCF-7 (A), WiDr (B), and HeLa (C)).
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Affiliation(s)
- Giuseppe Vitiello
- Department of Chemical
- Materials and Production Engineering
- University of Naples “Federico II”
- 80125 Naples
- Italy
| | - Alessandra Luchini
- CSGI – Consorzio interuniversitario per lo sviluppo di Sistemi a Grande Interfase
- Department of Chemistry
- University of Florence
- 50019 Sesto Fiorentino (FI)
- Italy
| | - Gerardino D'Errico
- CSGI – Consorzio interuniversitario per lo sviluppo di Sistemi a Grande Interfase
- Department of Chemistry
- University of Florence
- 50019 Sesto Fiorentino (FI)
- Italy
| | - Rita Santamaria
- Department of Pharmacy
- University of Naples “Federico II”
- 80131 Naples
- Italy
| | - Antonella Capuozzo
- Department of Pharmacy
- University of Naples “Federico II”
- 80131 Naples
- Italy
| | - Carlo Irace
- Department of Pharmacy
- University of Naples “Federico II”
- 80131 Naples
- Italy
| | - Daniela Montesarchio
- Department of Chemical Sciences
- University of Naples “Federico II”
- 80126 Naples
- Italy
| | - Luigi Paduano
- CSGI – Consorzio interuniversitario per lo sviluppo di Sistemi a Grande Interfase
- Department of Chemistry
- University of Florence
- 50019 Sesto Fiorentino (FI)
- Italy
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21
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Kumar K, Maiti B, Kondaiah P, Bhattacharya S. α-Tocopherol derived lipid dimers as efficient gene transfection agents. Mechanistic insights into lipoplex internalization and therapeutic induction of apoptotic activity. Org Biomol Chem 2015; 13:2444-52. [DOI: 10.1039/c4ob02063d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Dimeric cationic tocopheryl lipids for efficacious therapeutic pDNA delivery in cancer cell lines.
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Affiliation(s)
- Krishan Kumar
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore
- India
| | - Bappa Maiti
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore
- India
| | - Paturu Kondaiah
- Department of Molecular Reproduction Development and Genetics
- Indian Institute of Science
- Bangalore
- India
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22
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Yadav K, Bhargava P, Bansal S, Singh M, Gupta S, Sandhu G, Kumar S, Sreekanth V, Bajaj A. Nature of the charged head group dictates the anticancer potential of lithocholic acid-tamoxifen conjugates for breast cancer therapy. MEDCHEMCOMM 2015. [DOI: 10.1039/c4md00289j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Anticancer drug Tamoxifen is modified to charged lithocholic acid derived amphiphile for enhanced cytotoxicity against breast cancer cells.
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Affiliation(s)
- Kavita Yadav
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
- Research Scholar
| | - Priyanshu Bhargava
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
| | - Sandhya Bansal
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
| | - Manish Singh
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
| | - Siddhi Gupta
- Department of Chemistry
- Indian Institute of Science Education and Research
- Bhopal
- India
| | - Geeta Sandhu
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
| | - Sandeep Kumar
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
| | - Vedagopuram Sreekanth
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
- Research Scholar
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
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23
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Ghosh R, Dey J. Vesicle formation by L-cysteine-derived unconventional single-tailed amphiphiles in water: a fluorescence, microscopy, and calorimetric investigation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:13516-13524. [PMID: 25333510 DOI: 10.1021/la5022214] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Two new L-cysteine-derived zwitterionic amphiphiles with poly(ethylene glycol) methyl ether (mPEG) tail of different chain lengths were synthesized and their surface activity and self-assembly properties were investigated. In aqueous phosphate buffered solution of pH 7.0, the amphiphiles were observed to form stable unilamellar vesicles, the bilayer membrane of which is constituted by the mPEG chains. The vesicle phase was characterized by a number of methods including fluorescence spectroscopy, dynamic light scattering, and transmission electron microscopy. The thermodynamics of self-assembly was also studied by isothermal titration calorimetry through measurements of the standard Gibbs free energy change (ΔG°m), standard enthalpy change (ΔH°m) and standard entropy change (ΔS°m) of micellization. The self-assembly process was found to be entropy-driven, which implies that the mPEG chain behaves like a hydrocarbon tail of conventional surfactants. The effects of pH, temperature, salt, and aging time on the bilayer stability were also investigated. Encapsulation and pH-triggered release of model hydrophobic and hydrophilic drugs is demonstrated.
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Affiliation(s)
- Rita Ghosh
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721 302, India
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24
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Sarkar D, Shukla RK, Gadgil V, Pramanik A. Head group specificity of novel functionalized surfactants: synthesis, self-assembly and calcium tolerance. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Bhargava P, Singh M, Sreekanth V, Bajaj A. Nature of the Charged Headgroup Determines the Fusogenic Potential and Membrane Properties of Lithocholic Acid Phospholipids. J Phys Chem B 2014; 118:9341-8. [DOI: 10.1021/jp504104a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Priyanshu Bhargava
- Laboratory of Nanotechnology
and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog
Vihar, Phase 1, Gurgaon 122016, Haryana, India
| | - Manish Singh
- Laboratory of Nanotechnology
and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog
Vihar, Phase 1, Gurgaon 122016, Haryana, India
| | - Vedagopuram Sreekanth
- Laboratory of Nanotechnology
and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog
Vihar, Phase 1, Gurgaon 122016, Haryana, India
| | - Avinash Bajaj
- Laboratory of Nanotechnology
and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog
Vihar, Phase 1, Gurgaon 122016, Haryana, India
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26
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Ivanova EA, Maslov MA, Kabilova TO, Puchkov PA, Alekseeva AS, Boldyrev IA, Vlassov VV, Serebrennikova GA, Morozova NG, Zenkova MA. Structure-transfection activity relationships in a series of novel cationic lipids with heterocyclic head-groups. Org Biomol Chem 2014; 11:7164-78. [PMID: 24057052 DOI: 10.1039/c3ob40442k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cationic liposomes are promising candidates for the delivery of various therapeutic nucleic acids. Here, we report a convenient synthesis of carbamate-type cationic lipids with various hydrophobic domains (tetradecanol, dialkylglycerol, cholesterol) and positively charged head-groups (pyridinium, N-methylimidazolium, N-methylmorpholinium) and data on the structure-transfection activity relationships. It was found that single-chain lipids possess high surface activity, which correlates with high cytotoxicity due to their ability to disrupt the cellular membrane by combined hydrophobic and electrostatic interactions. Liposomes containing these lipids also display high cytotoxicity with respect to all cell lines. Irrespective of chemical structures, all cationic lipids form liposomes with similar sizes and surface potentials. The characteristics of complexes composed of cationic liposomes and nucleic acids depend mostly on the type of nucleic acid and P/N ratios. In the case of oligodeoxyribonucleotide delivery, the transfection activity depends on the type of cationic head-group regardless of the type of hydrophobic domain: all types of cationic liposomes mediate efficient oligonucleotide transfer into 80-90% of the eukaryotic cells, and liposomes based on lipids with N-methylmorpholinium cationic head-group display the highest transfection activity. In the case of plasmid DNA and siRNA, the type of hydrophobic domain determines the transfection activity: liposomes composed of cholesterol-based lipids were the most efficient in DNA transfer, while liposomes containing glycerol-based lipids exhibited reasonable activity in siRNA delivery under serum-free conditions.
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Affiliation(s)
- Ekaterina A Ivanova
- M. V. Lomonosov Moscow State University of Fine Chemical Technology, 86 Vernadskiy ave., Moscow, Russian Federation.
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27
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Misra SK, Naz S, Kondaiah P, Bhattacharya S. A cationic cholesterol based nanocarrier for the delivery of p53-EGFP-C3 plasmid to cancer cells. Biomaterials 2014; 35:1334-46. [DOI: 10.1016/j.biomaterials.2013.10.062] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 10/20/2013] [Indexed: 01/10/2023]
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Misra SK, Muñoz-Úbeda M, Datta S, Barrán-Berdón AL, Aicart-Ramos C, Castro-Hartmann P, Kondaiah P, Junquera E, Bhattacharya S, Aicart E. Effects of a delocalizable cation on the headgroup of gemini lipids on the lipoplex-type nanoaggregates directly formed from plasmid DNA. Biomacromolecules 2013; 14:3951-63. [PMID: 24083552 DOI: 10.1021/bm401079h] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Lipoplex-type nanoaggregates prepared from pEGFP-C3 plasmid DNA (pDNA) and mixed liposomes, with a gemini cationic lipid (CL) [1,2-bis(hexadecyl imidazolium) alkanes], referred as (C16Im)2Cn (where Cn is the alkane spacer length, n = 2, 3, 5, or 12, between the imidazolium heads) and DOPE zwitterionic lipid, have been analyzed by zeta potential, gel electrophoresis, SAXS, cryo-TEM, fluorescence anisotropy, transfection efficiency, fluorescence confocal microscopy, and cell viability/cytotoxicity experiments to establish a structure-biological activity relationship. The study, carried out at several mixed liposome compositions, α, and effective charge ratios, ρeff, of the lipoplex, demonstrates that the transfection of pDNA using CLs initially requires the determination of the effective charge of both. The electrochemical study confirms that CLs with a delocalizable positive charge in their headgroups yield an effective positive charge that is 90% of their expected nominal one, while pDNA is compacted yielding an effective negative charge which is only 10-25% than that of the linear DNA. SAXS diffractograms show that lipoplexes formed by CLs with shorter spacer (n = 2, 3, or 5) present three lamellar structures, two of them in coexistence, while those formed by CL with longest spacer (n = 12) present two additional inverted hexagonal structures. Cryo-TEM micrographs show nanoaggregates with two multilamellar structures, a cluster-type (at low α value) and a fingerprint-type, that coexist with the cluster-type at moderate α composition. The optimized transfection efficiency (TE) of pDNA, in HEK293T, HeLa, and H1299 cells was higher using lipoplexes containing gemini CLs with shorter spacers at low α value. Each lipid formulation did not show any significant levels of toxicity, the reported lipoplexes being adequate DNA vectors for gene therapy and considerably better than both Lipofectamine 2000 and CLs of the 1,2-bis(hexadecyl ammnoniun) alkane series, recently reported.
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Affiliation(s)
- Santosh K Misra
- Departments of ‡Organic Chemistry and ⊥Molecular Reproduction Development and Genetics, Indian Institute of Science , 560012 Bangalore, India
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29
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Savarala S, Brailoiu E, Wunder SL, Ilies MA. Tuning the self-assembling of pyridinium cationic lipids for efficient gene delivery into neuronal cells. Biomacromolecules 2013; 14:2750-64. [PMID: 23834644 DOI: 10.1021/bm400591d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We are reporting a new set of biocompatible, low-toxicity pyridinium cationic lipids based on a dopamine backbone on which hydrophobic alkyl tails are attached via an ether linkage. Due to their optimized hydrophilic/hydrophobic interface and packing parameter, the new lipids are able to strongly self-assemble either alone or when coformulated with colipids DOPE or cholesterol. The supra-molecular assemblies generated with the novel pyridinium amphiphiles were characterized in bulk and in solution via a combination of techniques including DSC, nanoDSC, SAXS, TOPM, TEM, DLS, zeta potential, and electrophoretic mobility measurements. These cationic bilayers can efficiently condense and deliver DNA to a large variety of cell lines, as proven by our self-assembling/physicochemical/biological correlation study. Using the luciferase reporter gene plasmid, we have also conducted a comprehensive structure-activity relationship study, which identified the best structural parameters and formulations for efficient and nontoxic gene delivery. Several formulations greatly surpassed established transfection systems with proved in vitro and in vivo efficiency, being able to transfect a large variety of malignant cells even in the presence of elevated levels of serum. The most efficient formulation was able to transfect selectively primary rat dopaminergic neurons harvested from nucleus accumbens, and neurons from the frontal cortex, a premise that recommends these synthetic vectors for future in vivo delivery studies for neuronal reprogramming.
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Affiliation(s)
- Sushma Savarala
- Department of Chemistry, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
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30
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Misra SK, Biswas J, Kondaiah P, Bhattacharya S. Gene transfection in high serum levels: case studies with new cholesterol based cationic gemini lipids. PLoS One 2013; 8:e68305. [PMID: 23861884 PMCID: PMC3701654 DOI: 10.1371/journal.pone.0068305] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2012] [Accepted: 06/02/2013] [Indexed: 01/09/2023] Open
Abstract
Background Six new cationic gemini lipids based on cholesterol possessing different positional combinations of hydroxyethyl (-CH2CH2OH) and oligo-oxyethylene -(CH2CH2O)n- moieties were synthesized. For comparison the corresponding monomeric lipid was also prepared. Each new cationic lipid was found to form stable, clear suspensions in aqueous media. Methodology/Principal Findings To understand the nature of the individual lipid aggregates, we have studied the aggregation properties using transmission electron microscopy (TEM), dynamic light scattering (DLS), zeta potential measurements and X-ray diffraction (XRD). We studied the lipid/DNA complex (lipoplex) formation and the release of the DNA from such lipoplexes using ethidium bromide. These gemini lipids in presence of a helper lipid, 1, 2-dioleoyl phophatidyl ethanol amine (DOPE) showed significant enhancements in the gene transfection compared to several commercially available transfection agents. Cholesterol based gemini having -CH2-CH2-OH groups at the head and one oxyethylene spacer was found to be the most effective lipid, which showed transfection activity even in presence of high serum levels (50%) greater than Effectene, one of the potent commercially available transfecting agents. Most of these geminis protected plasmid DNA remarkably against DNase I in serum, although the degree of stability was found to vary with their structural features. Conclusions/Significance -OH groups present on the cationic headgroups in combination with oxyethylene linkers on cholesterol based geminis, gave an optimized combination of new genera of gemini lipids possessing high transfection efficiency even in presence of very high percentage of serum. This property makes them preferential transfection reagents for possible in vivo studies.
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Affiliation(s)
- Santosh K. Misra
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
| | - Joydeep Biswas
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
| | - Paturu Kondaiah
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, India
- Chemical Biology Unit of JNCASR, Bangalore, India
- * E-mail:
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Zhi D, Zhang S, Cui S, Zhao Y, Wang Y, Zhao D. The Headgroup Evolution of Cationic Lipids for Gene Delivery. Bioconjug Chem 2013; 24:487-519. [DOI: 10.1021/bc300381s] [Citation(s) in RCA: 188] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Defu Zhi
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, Dalian 116012, China
- State Ethnic Affairs Commission-Ministry
of Education Key Laboratory of Biotechnology and Bio-resources Utilization, Dalian Nationalities University, Dalian 116600, China
| | - Shubiao Zhang
- State Ethnic Affairs Commission-Ministry
of Education Key Laboratory of Biotechnology and Bio-resources Utilization, Dalian Nationalities University, Dalian 116600, China
| | - Shaohui Cui
- State Ethnic Affairs Commission-Ministry
of Education Key Laboratory of Biotechnology and Bio-resources Utilization, Dalian Nationalities University, Dalian 116600, China
| | - Yinan Zhao
- State Ethnic Affairs Commission-Ministry
of Education Key Laboratory of Biotechnology and Bio-resources Utilization, Dalian Nationalities University, Dalian 116600, China
| | | | - Defeng Zhao
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, Dalian 116012, China
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Dorasamy S, Narainpersad N, Singh M, Ariatti M. Novel targeted liposomes deliver sirna to hepatocellular carcinoma cells in vitro. Chem Biol Drug Des 2012; 80:647-56. [PMID: 22783887 DOI: 10.1111/j.1747-0285.2012.01446.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Liposomes form a major class of non-viral vectors for short interfering RNA delivery, however tissue and cell-specific targeting are additional requirements in the design of short interfering RNA delivery systems with a therapeutic potential. Selective delivery of liposomes to hepatocytes may be achieved by directing complexes to the asialoglycoprotein receptor, which is expressed on hepatocytes, and which displays high affinity for the β-d-galactopyranosyl moiety. We aimed to show that the d-galactopyranosyl ring in direct β-glycosidic link to cholesterol, when formulated into liposomes with 3β[N-(N',N'-dimethylaminopropane) carbamoyl] cholesterol (Chol-T) or its quaternary trimethylammonium analogue (Chol-Q), may promote targeted delivery of cytotoxic short interfering RNA to the human hepatoma cell line HepG2 via the asialoglycoprotein receptor. Liposome-short interfering RNA interactions were characterized by electron microscopy, dye displacement, gel retardation and nuclease assays. Stable short interfering RNA-protective lipoplexes were formed at N/P ratios in the range 5:1-7:1. Targeted lipoplex 4 achieved high transfection efficiencies at 50 nm short interfering RNA (70%) and <10% in a competition assay, whilst untargeted complexes reached low levels at the same concentration (<25%). Transfection efficiencies of all lipoplexes in the asialoglycoprotein receptor-negative cell line HEK293 under the same conditions were low. Lipoplexes containing cholesteryl-β-d-galactopyranoside may therefore form the basis for the development of useful hepatotropic short interfering RNA delivery vectors.
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Affiliation(s)
- Shantal Dorasamy
- Non-viral Gene Delivery Laboratory, Discipline of Biochemistry, University of KwaZulu-Natal, Westville campus, P. Bag X54001, Durban 4000, South Africa
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Markov OO, Mironova NL, Maslov MA, Petukhov IA, Morozova NG, Vlassov VV, Zenkova MA. Novel cationic liposomes provide highly efficient delivery of DNA and RNA into dendritic cell progenitors and their immature offsets. J Control Release 2012; 160:200-10. [DOI: 10.1016/j.jconrel.2011.11.034] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 11/25/2011] [Accepted: 11/27/2011] [Indexed: 12/11/2022]
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Chhikara BS, Misra SK, Bhattacharya S. CNT loading into cationic cholesterol suspensions show improved DNA binding and serum stability and ability to internalize into cancer cells. NANOTECHNOLOGY 2012; 23:065101. [PMID: 22248909 DOI: 10.1088/0957-4484/23/6/065101] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Methods which disperse single-walled carbon nanotubes (SWNTs) in water as 'debundled', while maintaining their unique physical properties are highly useful. We present here a family of cationic cholesterol compounds (Chol+) {Cholest-5en-3β-oxyethyl pyridinium bromide (Chol-PB+), Cholest-5en-3β-oxyethyl N-methyl pyrrolidinium bromide (Chol-MPB+), Cholest-5en-3β-oxyethyl N-methyl morpholinium bromide (Chol-MMB+) and Cholest-5en-3β-oxyethyl diazabicyclo octanium bromide (Chol-DOB+)}. Each of these could be easily dispersed in water. The resulting cationic cholesterol (Chol+) suspensions solubilized single-walled carbon nanotubes (SWCNTs) by the non-specific physical adsorption of Chol+ to form stable, transparent, dark aqueous suspensions at room temperature. Electron microscopy reveals the existence of highly segregated CNTs in these samples. Zeta potential measurements showed an increase in potential of cationic cholesterol aggregates on addition of CNTs. The CNT-Chol+ suspensions were capable of forming stable complexes with genes (DNA) efficiently. The release of double-helical DNA from such CNT-Chol+ complexes could be induced upon the addition of anionic micellar solution of SDS. Furthermore, the CNT-based DNA complexes containing cationic cholesterol aggregates showed higher stability in fetal bovine serum media at physiological conditions. Confocal studies confirm that CNT-Chol+ formulations adhere to HeLa cell surfaces and get internalized more efficiently than the cationic cholesterol suspensions alone (devoid of any CNTs). These cationic cholesterol-CNT suspensions therefore appear to be a promising system for further use in biological applications.
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Misra SK, Kondaiah P, Bhattacharya S, Rao CNR. Graphene as a nanocarrier for tamoxifen induces apoptosis in transformed cancer cell lines of different origins. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:131-143. [PMID: 22102595 DOI: 10.1002/smll.201101640] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Indexed: 05/31/2023]
Abstract
A cationic amphiphile, cholest-5en-3β-oxyethyl pyridinium bromide (PY(+) -Chol), is able to efficiently disperse exfoliated graphene (GR) in water by the physical adsorption of PY(+) -Chol on the surface of GR to form stable, dark aqueous suspensions at room temperature. The GR-PY(+) -Chol suspension can then be used to solubilize Tamoxifen Citrate (TmC), a breast cancer drug, in water. The resulting TmC-GR-PY(+) -Chol is stable for a long time without any precipitation. Fluorescence emission and UV absorption spectra indicate the existence of noncovalent interactions between TmC, GR, and PY(+) -Chol in these suspensions. Electron microscopy shows the existence of segregated GR sheets and TmC 'ribbons' in the composite suspensions. Atomic force microscopy indicates the presence of 'extended' structures of GR-PY(+) -Chol, which grows wider in the presence of TmC. The slow time-dependent release of TmC is noticed in a reconstituted cell culture medium, a property useful as a drug carrier. TmC-GR-PY(+) -Chol selectively enhanced the cell death (apoptosis) of the transformed cancer cells compared to normal cells. This potency is found to be true for a wide range of transformed cancer cells viz. HeLa, A549, ras oncogene-transformed NIH3T3, HepG2, MDA-MB231, MCF-7, and HEK293T compared to the normal cell HEK293 in vitro. Confocal microscopy confirmed the high efficiency of TmC-GR-PY(+) -Chol in delivering the drug to the cells, compared to the suspensions devoid of GR.
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Affiliation(s)
- Santosh K Misra
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India
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36
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Misra SK, Moitra P, Chhikara BS, Kondaiah P, Bhattacharya S. Loading of single-walled carbon nanotubes in cationic cholesterol suspensions significantly improves gene transfection efficiency in serum. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15659h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dittrich M, Heinze M, Wölk C, Funari SS, Dobner B, Möhwald H, Brezesinski G. Structure-Function Relationships of New Lipids Designed for DNA Transfection. Chemphyschem 2011; 12:2328-37. [DOI: 10.1002/cphc.201100065] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 04/29/2011] [Indexed: 11/12/2022]
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Kim BK, Bae YU, Doh KO, Hwang GB, Lee SH, Kang H, Seu YB. The synthesis of cholesterol-based cationic lipids with trimethylamine head and the effect of spacer structures on transfection efficiency. Bioorg Med Chem Lett 2011; 21:3734-7. [DOI: 10.1016/j.bmcl.2011.04.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 04/14/2011] [Accepted: 04/18/2011] [Indexed: 10/18/2022]
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Biswas J, Mishra SK, Kondaiah P, Bhattacharya S. Syntheses, Transfection Efficacy and Cell Toxicity Properties of Novel Cholesterol-based Gemini Lipids having Hydroxyethyl Head group. Org Biomol Chem 2011; 9:4600-13. [DOI: 10.1039/c0ob00940g] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Biswas J, Bajaj A, Bhattacharya S. Membranes of Cationic Gemini Lipids based on Cholesterol with Hydroxyl Headgroups and their Interactions with DNA and Phospholipid. J Phys Chem B 2010; 115:478-86. [DOI: 10.1021/jp108372z] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joydeep Biswas
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India, Chemical Biology Unit of JNCASR, Bangalore 560 064, India, and J. C. Bose Fellow, DST, New Delhi, India
| | - Avinash Bajaj
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India, Chemical Biology Unit of JNCASR, Bangalore 560 064, India, and J. C. Bose Fellow, DST, New Delhi, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India, Chemical Biology Unit of JNCASR, Bangalore 560 064, India, and J. C. Bose Fellow, DST, New Delhi, India
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41
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Synthesis and delivery activity of new cationic cholesteryl glucosides. Carbohydr Res 2010; 345:2438-49. [DOI: 10.1016/j.carres.2010.09.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2007] [Revised: 09/04/2010] [Accepted: 09/10/2010] [Indexed: 01/23/2023]
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Bhattacharya S, Biswas J. Understanding membranes through the molecular design of lipids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:4642-54. [PMID: 19842629 DOI: 10.1021/la9011718] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Lipids are amphiphilic molecules that are composed of hydrophilic and hydrophobic regions. A typical membranous aggregate (vesicles, water-filled lipid nanospheres) is formed upon the self-organization of lipids in water from a diverse collection of amphiphiles producing a dynamic supramolecular structure that shows phase behavior and ordering as required for specific biological functions. The determination of various physical properties of lipid aggregates is the key to determining structure-function relationships. Over the years, we have designed and synthesized a wide variety of lipid molecular systems for the investigation of their membrane-forming properties and have used them for purposes such as gene delivery and enzyme activation. In this feature article, we focus on our work on various types of lipids including ion-paired amphiphiles, cholesterol-based lipids, aromatic lipids, macrocyclic lipids containing disulfide tethers, cationic dimeric lipids, and so forth. The emphasis is on experimental design and bottom-line conclusions.
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Affiliation(s)
- Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India.
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43
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Zhang Y, Li H, Sun J, Gao J, Liu W, Li B, Guo Y, Chen J. DC-Chol/DOPE cationic liposomes: a comparative study of the influence factors on plasmid pDNA and siRNA gene delivery. Int J Pharm 2010; 390:198-207. [PMID: 20116418 DOI: 10.1016/j.ijpharm.2010.01.035] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Revised: 12/31/2009] [Accepted: 01/22/2010] [Indexed: 02/02/2023]
Abstract
Cationic liposomes (CLs) composed of 3beta-[N-(N',N'-dimethylaminoethane) carbamoyl] cholesterol (DC-Chol) and dioleoylphosphatidylethanolamine (DOPE) (DC-Chol/DOPE liposomes) have been classified as one of the most efficient gene delivery systems. Our study aims to examine the effect of the molar ratio of DC-Chol/DOPE, PEGylation and serum on the pDNA (plasmid pDNA) and siRNA (small interfering RNA) transfection of DC-Chol/DOPE liposomes. The results showed that the most efficient DC-Chol/DOPE liposomes for pDNA or siRNA delivery were at a 1:2 or 1:1 molar ratio of DC-Chol/DOPE, respectively. The transfection efficiency of DC-Chol/DOPE liposomes increased along with increased weight ratio of DC-Chol/siRNA. However, the pDNA transfection efficiency decreased along with increased weight ratio of DC-Chol/pDNA from 3/1. As expected, PEGylation decreased siRNA and pDNA transfection efficiency of DC-Chol/DOPE liposomes. In PEGylated DC-Chol/DOPE liposomes, increased weight ratio of DC-Chol/pDNA from 3/1 did not lead to higher pDNA transfection efficiency, whereas increased weight ratio of DC-Chol/siRNA resulted in increased siRNA transfection efficiency. Furthermore, the serum did not significantly inhibit the pDNA and siRNA transfection efficiency of DC-Chol/DOPE liposomes. In conclusion, our results elucidated the influence factors of DC-Chol/DOPE liposome transfection and would reveal that siRNA and pDNA transfection mechanisms were different in DC-Chol/DOPE liposomes.
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Affiliation(s)
- Yang Zhang
- Department of Pharmaceutical Science, School of Pharmacy, The Second Military Medical University, 800 Xiang Yin Road, Shanghai 200433, People's Republic of China
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44
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Cationic lipids: molecular structure/ transfection activity relationships and interactions with biomembranes. Top Curr Chem (Cham) 2010; 296:51-93. [PMID: 21504100 DOI: 10.1007/128_2010_67] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Abstract Synthetic cationic lipids, which form complexes (lipoplexes) with polyanionic DNA, are presently the most widely used constituents of nonviral gene carriers. A large number of cationic amphiphiles have been synthesized and tested in transfection studies. However, due to the complexity of the transfection pathway, no general schemes have emerged for correlating the cationic lipid chemistry with their transfection efficacy and the approaches for optimizing their molecular structures are still largely empirical. Here we summarize data on the relationships between transfection activity and cationic lipid molecular structure and demonstrate that the transfection activity depends in a systematic way on the lipid hydrocarbon chain structure. A number of examples, including a large series of cationic phosphatidylcholine derivatives, show that optimum transfection is displayed by lipids with chain length of approximately 14 carbon atoms and that the transfection efficiency strongly increases with increase of chain unsaturation, specifically upon replacement of saturated with monounsaturated chains.
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45
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Unciti-Broceta A, Bacon MN, Bradley M. Strategies for the preparation of synthetic transfection vectors. Top Curr Chem (Cham) 2010; 296:15-49. [PMID: 21504099 DOI: 10.1007/128_2010_65] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In the late 1980s independent work by Felgner and Behr pioneered the use of cationic materials to complex and deliver nucleic acids into eukaryotic cells. Since this time, a vast number of synthetic transfection vectors, which are typically divided into two main "transfectors", have been developed namely: (1) cationic lipids and (2) polycationic polymers. In this chapter the main synthetic approaches used for the synthesis of these compounds will be reviewed with particular attention paid to: cationic lipids and dendrimers. This review is aimed primarily at the younger audience of doctoral students and non-specialist readers.
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Affiliation(s)
- Asier Unciti-Broceta
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, UK.
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46
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Bhattacharya S, Bajaj A. Advances in gene delivery through molecular design of cationic lipids. Chem Commun (Camb) 2009:4632-56. [DOI: 10.1039/b900666b] [Citation(s) in RCA: 232] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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47
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Bhattacharya S, Bajaj A. Fluorescence and thermotropic studies of the interactions of PEI-cholesterol based PEI-chol lipopolymers with dipalmitoyl phosphatidylcholine membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2008; 1778:2225-33. [DOI: 10.1016/j.bbamem.2008.05.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2008] [Revised: 05/14/2008] [Accepted: 05/14/2008] [Indexed: 10/22/2022]
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Bajaj A, Kondaiah P, Bhattacharya S. Synthesis and Gene Transfection Efficacies of PEI−Cholesterol-Based Lipopolymers. Bioconjug Chem 2008; 19:1640-51. [DOI: 10.1021/bc700381v] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Avinash Bajaj
- Department of Organic Chemistry, and Department of Molecular Reproduction, Development, and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
| | - Paturu Kondaiah
- Department of Organic Chemistry, and Department of Molecular Reproduction, Development, and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, and Department of Molecular Reproduction, Development, and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
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49
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Bajaj A, Paul B, Kondaiah P, Bhattacharya S. Structure−Activity Investigation on the Gene Transfection Properties of Cardiolipin Mimicking Gemini Lipid Analogues. Bioconjug Chem 2008; 19:1283-300. [DOI: 10.1021/bc700474r] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Avinash Bajaj
- Department of Organic Chemistry and Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
| | - Bishwajit Paul
- Department of Organic Chemistry and Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
| | - Paturu Kondaiah
- Department of Organic Chemistry and Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry and Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560 012, India, and Chemical Biology Unit of JNCASR, Bangalore 560 064, India
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