1
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Kumar S, Thakur J, Yadav K, Mitra M, Pal S, Ray A, Gupta S, Medatwal N, Gupta R, Mishra D, Rani P, Padhi S, Sharma P, Kapil A, Srivastava A, Priyakumar UD, Dasgupta U, Thukral L, Bajaj A. Cholic Acid-Derived Amphiphile which Combats Gram-Positive Bacteria-Mediated Infections via Disintegration of Lipid Clusters. ACS Biomater Sci Eng 2019; 5:4764-4775. [PMID: 33448819 DOI: 10.1021/acsbiomaterials.9b00706] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Inappropriate and uncontrolled use of antibiotics results in the emergence of antibiotic resistance, thereby threatening the present clinical regimens to treat infectious diseases. Therefore, new antimicrobial agents that can prevent bacteria from developing drug resistance are urgently needed. Selective disruption of bacterial membranes is the most effective strategy for combating microbial infections as accumulation of genetic mutations will not allow for the emergence of drug resistance against these antimicrobials. In this work, we tested cholic acid (CA) derived amphiphiles tethered with different alkyl chains for their ability to combat Gram-positive bacterial infections. In-depth biophysical and biomolecular simulation studies suggested that the amphiphile with a hexyl chain (6) executes more effective interactions with Gram-positive bacterial membranes as compared to other hydrophobic counterparts. Amphiphile 6 is effective against multidrug resistant Gram-positive bacterial strains as well and does not allow the adherence of S. aureus on amphiphile 6 coated catheters implanted in mice. Further, treatment of wound infections with amphiphile 6 clears the bacterial infections. Therefore, the current study presents strategic guidelines in design and development of CA-derived membrane-targeting antimicrobials for Gram-positive bacterial infections.
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Affiliation(s)
- Sandeep Kumar
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India.,Manipal Academy of Higher Education, Tiger Circle Road, Madhav Nagar, Manipal-576104, Karnataka, India
| | - Jyoti Thakur
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bypass Road, Bhauri, Bhopal-462066, Madhya Pradesh, India
| | - Kavita Yadav
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India.,Manipal Academy of Higher Education, Tiger Circle Road, Madhav Nagar, Manipal-576104, Karnataka, India
| | - Madhurima Mitra
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
| | - Sanjay Pal
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India.,Kalinga Institute of Industrial Technology, KIIT Road, Patia, Bhubaneswar-751024, Odisha, India
| | - Arjun Ray
- CSIR-Institute of Genomics and Integrative Biology, South Campus, Mathura Road, Opp: Sukhdev Vihar Bus Depot, New Delhi-110025, India
| | - Siddhi Gupta
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
| | - Nihal Medatwal
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
| | - Ragini Gupta
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
| | - Deepakkumar Mishra
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
| | - Parul Rani
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
| | - Siladitya Padhi
- Centre for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Professor CR Rao Road, Gachibowli, Hyderabad-500032, India
| | - Priyanka Sharma
- Department of Microbiology, All India Institute of Medical Sciences, Sri Aurobindo Marg, Ansari Nagar, New Delhi-110029, India
| | - Arti Kapil
- Department of Microbiology, All India Institute of Medical Sciences, Sri Aurobindo Marg, Ansari Nagar, New Delhi-110029, India
| | - Aasheesh Srivastava
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bypass Road, Bhauri, Bhopal-462066, Madhya Pradesh, India
| | - U Deva Priyakumar
- Centre for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Professor CR Rao Road, Gachibowli, Hyderabad-500032, India
| | - Ujjaini Dasgupta
- Amity Institute of Integrative Sciences and Health, Amity University, Amity Education Valley Gurugram, Panchgaon, Manesar, Gurugram-122413, Haryana, India
| | - Lipi Thukral
- CSIR-Institute of Genomics and Integrative Biology, South Campus, Mathura Road, Opp: Sukhdev Vihar Bus Depot, New Delhi-110025, India
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
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2
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Mitra M, Asad M, Kumar S, Yadav K, Chaudhary S, Bhavesh NS, Khalid S, Thukral L, Bajaj A. Distinct Intramolecular Hydrogen Bonding Dictates Antimicrobial Action of Membrane-Targeting Amphiphiles. J Phys Chem Lett 2019; 10:754-760. [PMID: 30694679 DOI: 10.1021/acs.jpclett.8b03508] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
As mechanisms underpinning the molecular interactions between membrane-targeting antimicrobials and Gram-negative bacterial membranes at atomistic scale remain elusive, we used cholic acid (CA)-derived amphiphiles with different hydrophobicities as model antimicrobials and assessed the effect of their conformational flexibility on antimicrobial activity. Relative to other hydrophobic counterparts, a compound with a hexyl chain (6) showed the strongest binding with the lipopolysaccharide (LPS) of Gram-negative bacterial membranes and acted as an effective antimicrobial. Biomolecular simulations, validated by complementary approaches, revealed that specific intramolecular hydrogen bonding imparts conformationally rigid character to compound 6. This conformational stability of compound 6 allows minimum but specific interactions of the amphiphile with LPS that are a sum of exothermic processes like electrostatic interactions, membrane insertion, and endothermic contributions from disaggregation of LPS. Therefore, our study reveals that a membrane-targeting mechanism with the help of conformationally selective molecules offers a roadmap for developing future therapeutics against bacterial infections.
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Affiliation(s)
- Madhurima Mitra
- Laboratory of Nanotechnology and Chemical Biology , Regional Centre for Biotechnology , NCR Biotech Science Cluster, third Milestone, Faridabad-Gurgaon Expressway , Faridabad 121001 , Haryana , India
| | - Mohammad Asad
- Laboratory of Nanotechnology and Chemical Biology , Regional Centre for Biotechnology , NCR Biotech Science Cluster, third Milestone, Faridabad-Gurgaon Expressway , Faridabad 121001 , Haryana , India
| | - Sandeep Kumar
- Laboratory of Nanotechnology and Chemical Biology , Regional Centre for Biotechnology , NCR Biotech Science Cluster, third Milestone, Faridabad-Gurgaon Expressway , Faridabad 121001 , Haryana , India
- Manipal Academy of Higher Education , Manipal 576104 , Karnataka , India
| | - Kavita Yadav
- Laboratory of Nanotechnology and Chemical Biology , Regional Centre for Biotechnology , NCR Biotech Science Cluster, third Milestone, Faridabad-Gurgaon Expressway , Faridabad 121001 , Haryana , India
- Manipal Academy of Higher Education , Manipal 576104 , Karnataka , India
| | - Sarika Chaudhary
- CSIR-Institute of Genomics and Integrative Biology , Mathura Road , New Delhi 110025 , India
| | - Neel Sarovar Bhavesh
- International Centre for Genetic Engineering and Biotechnology , Aruna Asaf Ali Marg , New Delhi 110067 , India
| | - Syma Khalid
- School of Chemistry , University of Southampton , Highfield, Southampton SO17 1BJ , United Kingdom
| | - Lipi Thukral
- CSIR-Institute of Genomics and Integrative Biology , Mathura Road , New Delhi 110025 , India
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology , Regional Centre for Biotechnology , NCR Biotech Science Cluster, third Milestone, Faridabad-Gurgaon Expressway , Faridabad 121001 , Haryana , India
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3
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Pizzuto M, Bigey P, Lachagès AM, Hoffmann C, Ruysschaert JM, Escriou V, Lonez C. Cationic lipids as one-component vaccine adjuvants: A promising alternative to alum. J Control Release 2018; 287:67-77. [PMID: 30110615 DOI: 10.1016/j.jconrel.2018.08.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 07/23/2018] [Accepted: 08/10/2018] [Indexed: 12/19/2022]
Abstract
Effective vaccine formulations consist of several components: an antigen carrier, the antigen, a stimulator of cellular immunity such as a Toll-like Receptors (TLRs) ligand, and a stimulator of humoral response such as an inflammasome activator. Here, we investigated the immunostimulatory and adjuvant properties of lipopolyamines, cationic lipids used as gene carriers. We identified new lipopolyamines able to activate both TLR2 and TLR4 and showed that lipopolyamines interact with TLRs via a mechanism different from the one used by bacterial ligands, activating a strong type-I IFN response, pro-inflammatory cytokines and IL-1β secretion. The TLR and inflammasome stimulations, together with the antigen carrier properties of lipopolyamines, resulted in both humoral and cellular immunity in mice vaccinated against OVA and make lipopolyamines promising one-component vaccine adjuvants.
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Affiliation(s)
- Malvina Pizzuto
- Structure and Fonction of Biological Membranes, Université Libre de Bruxelles, Boulevard du Triomphe, 1050 Brussels, Belgium.
| | - Pascal Bigey
- CNRS, Unité de Technologies Chimiques et Biologiques pour la Santé (UTCBS), UMR 8258, F-75006 Paris, France; INSERM, UTCBS U 1022, F-75006 Paris, France; Université Paris Descartes, Sorbonne-Paris-Cité University, UTCBS, F-75006 Paris, France; Chimie ParisTech, PSL Research University, UTCBS, F-75005 Paris, France
| | - Anne-Marie Lachagès
- CNRS, Unité de Technologies Chimiques et Biologiques pour la Santé (UTCBS), UMR 8258, F-75006 Paris, France; INSERM, UTCBS U 1022, F-75006 Paris, France; Université Paris Descartes, Sorbonne-Paris-Cité University, UTCBS, F-75006 Paris, France; Chimie ParisTech, PSL Research University, UTCBS, F-75005 Paris, France
| | - Céline Hoffmann
- CNRS, Unité de Technologies Chimiques et Biologiques pour la Santé (UTCBS), UMR 8258, F-75006 Paris, France; INSERM, UTCBS U 1022, F-75006 Paris, France; Université Paris Descartes, Sorbonne-Paris-Cité University, UTCBS, F-75006 Paris, France; Chimie ParisTech, PSL Research University, UTCBS, F-75005 Paris, France
| | - Jean-Marie Ruysschaert
- Structure and Fonction of Biological Membranes, Université Libre de Bruxelles, Boulevard du Triomphe, 1050 Brussels, Belgium
| | - Virginie Escriou
- CNRS, Unité de Technologies Chimiques et Biologiques pour la Santé (UTCBS), UMR 8258, F-75006 Paris, France; INSERM, UTCBS U 1022, F-75006 Paris, France; Université Paris Descartes, Sorbonne-Paris-Cité University, UTCBS, F-75006 Paris, France; Chimie ParisTech, PSL Research University, UTCBS, F-75005 Paris, France
| | - Caroline Lonez
- Structure and Fonction of Biological Membranes, Université Libre de Bruxelles, Boulevard du Triomphe, 1050 Brussels, Belgium; Department of Veterinary Medicine, University of Cambridge, Madingley Rd, Cambridge CB3 0ES, United Kingdom
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4
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Sahu S, Sharma A, Mishra AK. Multiparametric Sensing of Membrane Bilayer Properties with a Highly Environment-Susceptible Fluorophore. J Phys Chem B 2018; 122:7308-7318. [DOI: 10.1021/acs.jpcb.8b02140] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Saugata Sahu
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Ashutosh Sharma
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Ashok Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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5
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Horvatova A, Utaipan T, Otto AC, Zhang Y, Gan-Schreier H, Pavek P, Pathil A, Stremmel W, Chamulitrat W. Ursodeoxycholyl lysophosphatidylethanolamide negatively regulates TLR-mediated lipopolysaccharide response in human THP-1-derived macrophages. Eur J Pharmacol 2018; 825:63-74. [PMID: 29475064 DOI: 10.1016/j.ejphar.2018.02.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/15/2018] [Accepted: 02/19/2018] [Indexed: 11/26/2022]
Abstract
The bile acid-phospholipid conjugate ursodeoxycholyl oleoyl-lysophophatidylethanolamide (UDCA-18:1LPE) is an anti-inflammatory and anti-fibrotic agent as previously shown in cultured hepatocytes and hepatic stellate cells as well as in in vivo models of liver injury. We hypothesize that UDCA-18:1LPE may directly inhibit the activation of immune cells. We found that UDCA-18:1LPE was capable of inhibiting the migration of phorbol ester-differentiated human THP-1 cells. We examined anti-inflammatory activity of UDCA-18:1LPE during activation of THP1-derived macrophages. Treatment of these macrophages by bacterial lipopolysaccharide (LPS) for 24 h induced the release of pro-inflammatory cytokines TNF-α, IL-6 and IL-1β. This release was markedly inhibited by pretreatment with UDCA-18:1LPE by ~ 65-90%. Derivatives with a different fatty-acid chain in LPE moiety also exhibited anti-inflammatory property. Western blotting and indirect immunofluorescence analyses revealed that UDCA-18:1LPE attenuated the expression of phosphorylated p38, MKK4/MKK7, JNK1/2, and c-Jun as well as nuclear translocation of NF-κB by ~ 22-86%. After LPS stimulation, the Toll-like receptor adaptor proteins, myeloid differentiation factor 88 and TNF receptor associated factor 6, were recruited into lipid rafts and UDCA-18:1LPE inhibited this recruitment by 22% and 58%, respectively. Moreover, LPS treatment caused a decrease of the known cytoprotective lysophosphatidylcholine species containing polyunsaturated fatty acids by 43%, and UDCA-18:1LPE co-treatment reversed this decrease. In conclusion, UDCA-18:1LPE and derivatives inhibited LPS inflammatory response by interfering with Toll-like receptor signaling in lipid rafts leading to an inhibition of MAPK and NF-κB activation. These conjugates may represent a class of lead compounds for development of anti-inflammatory drugs.
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Affiliation(s)
- Alzbeta Horvatova
- Department of Internal Medicine IV, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyorovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Tanyarath Utaipan
- Department of Pre-Clinic, Faculty of Sciences and Technology, Prince of Songkla University, Pattani Campus, 94000 Pattani, Thailand
| | - Ann-Christin Otto
- Department of Internal Medicine IV, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany
| | - Yuling Zhang
- Department of Internal Medicine IV, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany
| | - Hongying Gan-Schreier
- Department of Internal Medicine IV, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany
| | - Petr Pavek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyorovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Anita Pathil
- Department of Internal Medicine IV, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany
| | - Wolfgang Stremmel
- Department of Internal Medicine IV, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany
| | - Walee Chamulitrat
- Department of Internal Medicine IV, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
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6
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Sreekanth V, Medatwal N, Kumar S, Pal S, Vamshikrishna M, Kar A, Bhargava P, Naaz A, Kumar N, Sengupta S, Bajaj A. Tethering of Chemotherapeutic Drug/Imaging Agent to Bile Acid-Phospholipid Increases the Efficacy and Bioavailability with Reduced Hepatotoxicity. Bioconjug Chem 2017; 28:2942-2953. [DOI: 10.1021/acs.bioconjchem.7b00564] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Vedagopuram Sreekanth
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon
Expressway, Faridabad, Haryana 121001, India
- Manipal University, Manipal, 576104, India
| | - Nihal Medatwal
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon
Expressway, Faridabad, Haryana 121001, India
- Manipal University, Manipal, 576104, India
| | - Sandeep Kumar
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon
Expressway, Faridabad, Haryana 121001, India
- Manipal University, Manipal, 576104, India
| | - Sanjay Pal
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon
Expressway, Faridabad, Haryana 121001, India
- KIIT University, Bhubaneswar, Odisha 751024, India
| | - Malyla Vamshikrishna
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon
Expressway, Faridabad, Haryana 121001, India
| | - Animesh Kar
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon
Expressway, Faridabad, Haryana 121001, India
| | - Priyanshu Bhargava
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon
Expressway, Faridabad, Haryana 121001, India
| | - Aaliya Naaz
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon
Expressway, Faridabad, Haryana 121001, India
| | - Nitin Kumar
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Sagar Sengupta
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Avinash Bajaj
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon
Expressway, Faridabad, Haryana 121001, India
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7
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Sreekanth V, Medatwal N, Pal S, Kumar S, Sengupta S, Bajaj A. Molecular Self-Assembly of Bile Acid-Phospholipids Controls the Delivery of Doxorubicin and Mice Survivability. Mol Pharm 2017; 14:2649-2659. [DOI: 10.1021/acs.molpharmaceut.7b00105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vedagopuram Sreekanth
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
- Manipal University, Manipal-576104, Karnataka, India
| | - Nihal Medatwal
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
- Manipal University, Manipal-576104, Karnataka, India
| | - Sanjay Pal
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
- KIIT University, Bhubaneswar-751024, Odisha, India
| | - Sandeep Kumar
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
- Manipal University, Manipal-576104, Karnataka, India
| | - Sagar Sengupta
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi-110067, India
| | - Avinash Bajaj
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India
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8
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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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9
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Kumar S, Bhargava P, Sreekanth V, Bajaj A. Design, synthesis, and physico-chemical interactions of bile acid derived dimeric phospholipid amphiphiles with model membranes. J Colloid Interface Sci 2015; 448:398-406. [DOI: 10.1016/j.jcis.2015.01.069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 01/26/2015] [Accepted: 01/26/2015] [Indexed: 11/16/2022]
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10
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Guha P, Roy B, Karmakar G, Nahak P, Koirala S, Sapkota M, Misono T, Torigoe K, Panda AK. Ion-pair amphiphile: a neoteric substitute that modulates the physicochemical properties of biomimetic membranes. J Phys Chem B 2015; 119:4251-62. [PMID: 25715819 DOI: 10.1021/jp512212u] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Ion-pair amphiphiles (IPAs) are neoteric pseudo-double-tailed compounds with potential as a novel substitute of phospholipid. IPA, synthesized by stoichiometric/equimolar mixing of aqueous solution of hexadecyltrimethylammonium bromide (HTMAB) and sodium dodecyl sulfate (SDS), was used as a potential substituent of naturally occurring phospholipid, soylecithin (SLC). Vesicles were prepared using SLC and IPA in different ratios along with cholesterol. The impact of IPA on SLC was examined by way of surface pressure (π)-area (A) measurements. Associated thermodynamic parameters were evaluated; interfacial miscibility between the components was found to depend on SLC/IPA ratio. Solution behavior of the bilayers, in the form of vesicles, was investigated by monitoring the hydrodynamic diameter, zeta potential, and polydispersity index over a period of 100 days. Size and morphology of the vesicles were also investigated by electron microscopic studies. Systems comprising 20 and 40 mol % IPA exhibited anomalous behavior. Thermal behavior of the vesicles, as scrutinized by differential scanning calorimetry, was correlated with the hydrocarbon chain as well as the headgroup packing. Entrapment efficiency (EE) of the vesicles toward the cationic dye methylene blue (MB) was also evaluated. Vesicles were smart enough to entrap the dye, and the efficiency was found to vary with IPA concentration. EE was found to be well above 80% for some stable dispersions. Such formulations thus could be considered to have potential as novel drug delivery systems.
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Affiliation(s)
- Pritam Guha
- †Department of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
| | - Biplab Roy
- †Department of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
| | - Gourab Karmakar
- †Department of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
| | - Prasant Nahak
- †Department of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
| | - Suraj Koirala
- ‡Department of Pharmaceutics, Himalayan Pharmacy Institute, Majhitar, Rangpo, East Sikkim 737136, India
| | - Manish Sapkota
- ‡Department of Pharmaceutics, Himalayan Pharmacy Institute, Majhitar, Rangpo, East Sikkim 737136, India
| | - Takeshi Misono
- §Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, Tokyo 278-8510, Japan
| | - Kanjiro Torigoe
- §Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, Tokyo 278-8510, Japan
| | - Amiya Kumar Panda
- †Department of Chemistry, University of North Bengal, Darjeeling 734 013, West Bengal, India
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11
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Swain J, Kamalraj M, Surya Prakash Rao H, Mishra AK. Effect of a glucose-triazole-hydrogenated cardanol conjugate on lipid bilayer membrane organization and thermotropic phase transition. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.10.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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12
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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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13
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Bansal S, Singh M, Kidwai S, Bhargava P, Singh A, Sreekanth V, Singh R, Bajaj A. Bile acid amphiphiles with tunable head groups as highly selective antitubercular agents. MEDCHEMCOMM 2014. [DOI: 10.1039/c4md00303a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Hard-charged amphiphiles are highly selective against mycobacteria, whereas soft-charged amphiphiles are active against Gram-positive and Gram-negative bacteria.
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Affiliation(s)
- 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
| | - Saqib Kidwai
- Vaccine and Infectious Disease Research Centre
- Translational Health Science and Technology Institute
- Gurgaon-122016, India
| | - Priyanshu Bhargava
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016, India
| | - Ashima Singh
- 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
- Manipal University
- Manipal, India
| | - Ramandeep Singh
- Vaccine and Infectious Disease Research Centre
- Translational Health Science and Technology Institute
- Gurgaon-122016, India
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016, India
- Manipal University
- Manipal, India
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