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Chinapaka R, Sivaramakrishna D, Choudhury SK, Manasa K, Cheppali SK, Swamy MJ. Structure, Self-Assembly, and Phase Behavior of Neuroactive N-Acyl GABAs: Doxorubicin Encapsulation in NPGABA/DPPC Liposomes and Release Studies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7883-7895. [PMID: 38587263 DOI: 10.1021/acs.langmuir.3c03615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
N-Acylated amino acids and neurotransmitters in mammals exert significant biological effects on the nervous system, immune responses, and vasculature. N-Acyl derivatives of γ-aminobutyric acid (N-acyl GABA), which belong to both classes mentioned above, are prominent among them. In this work, a homologous series of N-acyl GABAs bearing saturated N-acyl chains (C8-C18) have been synthesized and characterized with respect to self-assembly, thermotropic phase behavior, and supramolecular organization. Differential scanning calorimetric studies revealed that the transition enthalpies and entropies of N-acyl GABAs are linearly dependent on the acyl chain length. The crystal structure of N-tridecanoyl GABA showed that the molecules are packed in bilayers with the acyl chains aligned parallel to the bilayer normal and that the carboxyl groups from opposite layers associate to form dimeric structures involving strong O-H···O hydrogen bonds. In addition, N-H···O and C-H···O hydrogen bonds between amide moieties of adjacent molecules within each layer stabilize the molecular packing. Powder X-ray diffraction studies showed odd-even alternation in the d spacings, suggesting that the odd chain and even chain compounds pack differently. Equimolar mixtures of N-palmitoyl GABA and dipalmitoylphosphatidylcholine (DPPC) were found to form stable unilamellar vesicles with diameters of ∼300-340 nm, which could encapsulate doxorubicin, an anticancer drug, with higher efficiency and better release characteristics than DPPC liposomes at physiologically relevant pH. These liposomes exhibit faster release of doxorubicin at acidic pH (<7.0), indicating their potential utility as drug carriers in cancer chemotherapy.
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Affiliation(s)
| | - Dokku Sivaramakrishna
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
- Department of Chemistry, School of Science, GITAM, Visakhapatnam 530045, India
| | | | - Konga Manasa
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | | | - Musti J Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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Sivaramakrishna D, Choudhury SK, Swamy MJ. Thermotropic phase behavior and supramolecular organization of N,O-diacyl-l-alaninols: effect on stratum corneum model membrane. J CHEM SCI 2021. [DOI: 10.1007/s12039-021-01951-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Vicente-García C, Colomer I. New antimicrobial self-assembling short lipopeptides. Org Biomol Chem 2021; 19:6797-6803. [PMID: 34319330 DOI: 10.1039/d1ob01227d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lipopeptides are an exceptional example of amphiphilic molecules that self-assemble into functional structures with applications in the areas of nanotechnology, catalysis or medicinal chemistry. Herein, we report a library of 21 short lipopeptides, together with their supramolecular characterization and antimicrobial activity against both Gram-negative (E. coli) and Gram-positive (S. aureus) strains. This study shows that simple lipoamino acids self-assemble into micellar or vesicular structures, while incorporating dipeptides capable of stablishing hydrogen bonds results in the adoption of advanced fibrilar structures. The self-assembly effect has proven to be key to achieve antimicrobial activity.
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Affiliation(s)
| | - Ignacio Colomer
- IMDEA Nanociencia, Faraday 9, Campus UAM, 28049 Madrid, Spain and Instituto de Química Orgánica General (IQOG-CSIC), Juan de la Cierva 3, 28006, Madrid, Spain.
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Sivaramakrishna D, Choudhury SK, Cheppali SK, Swamy MJ. Structure, thermotropic phase behavior and membrane interaction of N-acyl-β-alaninols. Homologs of stress-combating N-acylethanolamines. Chem Phys Lipids 2021; 236:105056. [PMID: 33631126 DOI: 10.1016/j.chemphyslip.2021.105056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/12/2021] [Accepted: 01/21/2021] [Indexed: 11/28/2022]
Abstract
β-Alaninol and its derivatives were reported to exhibit interesting biological and pharmacological activities and showed potential application in formulating drug delivery vehicles. In the present study, we report the synthesis and characterization of N-acyl-β-alaninols (NABAOHs) bearing saturated acyl chains (n = 8-20) with respect to thermotropic phase behavior, supramolecular organization and interaction with diacylphosphatidylcholine, a major membrane lipid. Results obtained from DSC and powder XRD studies revealed that the transition temperatures (Tt), transition enthalpies (ΔHt), transition entropies (ΔSt) and d-spacings of NABAOHs show odd-even alteration. A linear dependence was observed in the values of ΔHt and ΔSt on the acyl chain length, independently for even and odd acyl chains in both dry and hydrated states; further, the even chainlength molecules exhibited higher values than the odd chainlength series. The crystals structures of N-lauroyl-β-alaninol and N-palmitoyl-β-alaninol, solved in monoclinic system in the P21/c space group, show that the NABAOHs adopt a tilted bilayer structure. A number of NH⋯O, O-H⋯O, and C-H⋯O hydrogen bonds between the hydroxyl and amide moieties of the head groups of NABAOH molecules belonging to adjacent and opposite layers stabilize the overall supramolecular organization of the self-assembled bilayer system. DSC studies on the interaction of N-myristoyl-β-alaninol (NMBAOH) with dimyristoylphosphatidylcholine (DMPC) indicate that these two lipids mix well up to 45 mol% NMBAOH, whereas phase separation was observed at higher contents of NMBAOH. Transmission electron microscopic studies reveal that mixtures containing 20-50 mol% NMBAOH form stable ULVs of 90-150 nm diameter, suitable for use in drug delivery applications.
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Affiliation(s)
| | | | | | - Musti J Swamy
- School of Chemistry, University of Hyderabad, Hyderabad, 500 046, India.
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Zheng C, Liu C, Zhang X. The self-assembly of supramolecular helical chains in crystallized compounds of methionine with inorganic/organic acids. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Eusepi P, Marinelli L, García-Villén F, Borrego-Sánchez A, Cacciatore I, Di Stefano A, Viseras C. Carvacrol Prodrugs with Antimicrobial Activity Loaded on Clay Nanocomposites. MATERIALS 2020; 13:ma13071793. [PMID: 32290211 PMCID: PMC7179022 DOI: 10.3390/ma13071793] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 03/25/2020] [Accepted: 04/07/2020] [Indexed: 01/18/2023]
Abstract
Background: Carvacrol, an essential oil with antimicrobial activity against a wide range of pathogens, and its water soluble carvacrol prodrugs (WSCP1-3) were intercalated into montmorillonite (VHS) interlayers to improve their stability in physiological media and promote their absorption in the intestine. Methods: Intercalation of prodrugs by cation exchange with montmorillonite interlayer counterions was verified by X-ray powder diffraction and confirmed by Fourier transform infrared spectroscopy and thermal analysis. Results: In vitro release studies demonstrated that montmorillonite successfully controlled the release of the adsorbed prodrugs and promoted their bioactivation only in the intestinal tract where carvacrol could develop its maximum antimicrobial activity. The amount of WSCP1, WSCP2, and WSCP3 released from VHS were 38%, 54%, and 45% at acid pH in 120 min, and 65%, 78%, and 44% at pH 6.8 in 240 min, respectively. Conclusions: The resultant hybrids successfully controlled conversion of the prodrugs to carvacrol, avoiding premature degradation of the drug.
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Affiliation(s)
- Piera Eusepi
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, 66100 Abruzzo, Italy; (P.E.); (I.C.); (A.D.S.)
| | - Lisa Marinelli
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, 66100 Abruzzo, Italy; (P.E.); (I.C.); (A.D.S.)
- Correspondence: ; Tel.: +39-871-355-4475
| | - Fátima García-Villén
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, University of Granada, 18071 Granada, Spain; (F.G.-V.); (A.B.-S.); (C.V.)
| | - Ana Borrego-Sánchez
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, University of Granada, 18071 Granada, Spain; (F.G.-V.); (A.B.-S.); (C.V.)
- Andalusian Institute of Earth Science, CSIC-University of Granada, Armilla, 18100 Granada, Spain
| | - Ivana Cacciatore
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, 66100 Abruzzo, Italy; (P.E.); (I.C.); (A.D.S.)
| | - Antonio Di Stefano
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, 66100 Abruzzo, Italy; (P.E.); (I.C.); (A.D.S.)
| | - Cesar Viseras
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, University of Granada, 18071 Granada, Spain; (F.G.-V.); (A.B.-S.); (C.V.)
- Andalusian Institute of Earth Science, CSIC-University of Granada, Armilla, 18100 Granada, Spain
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Marinelli L, Cacciatore I, Eusepi P, Di Biase G, Morroni G, Cirioni O, Giacometti A, Di Stefano A. Viscoelastic behaviour of hyaluronic acid formulations containing carvacrol prodrugs with antibacterial properties. Int J Pharm 2020; 582:119306. [PMID: 32276092 DOI: 10.1016/j.ijpharm.2020.119306] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 11/16/2022]
Abstract
In this paper, we report the development and viscoelastic properties of hyaluronic acid formulations (HA5, HA30, and HA60, containing 0.5, 3, and 6% HA, respectively) loaded with carvacrol prodrugs (WSCPS) with antibacterial properties. Notably, antimicrobial studies revealed that WSCP1-2 in both HA5 and HA30 formulations showed the best minimum inhibitory concentration (MIC) values against Enterococcus faecium (128 mg/L) and Enterococcus faecalis (256 mg/L) compared to those of carvacrol alone or in formulations with HA. Moreover, rheological analyses showed that HA30 composites exhibited a semi-solid consistency, while HA5 formulations possessed a fluid consistency. Considering these data, HA30 is a useful formulation which guarantees a good percentage of prodrug release (e.g., 30 and 60% for WSCP1 and 2, respectively) as well as a texture suitable for topical administration to treat wounds and/or skin infections.
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Affiliation(s)
- Lisa Marinelli
- Department of Pharmacy, "G. D'Annunzio" University of Chieti-Pescara, 66100 Chieti Scalo (CH), Italy.
| | - Ivana Cacciatore
- Department of Pharmacy, "G. D'Annunzio" University of Chieti-Pescara, 66100 Chieti Scalo (CH), Italy
| | - Piera Eusepi
- Department of Pharmacy, "G. D'Annunzio" University of Chieti-Pescara, 66100 Chieti Scalo (CH), Italy
| | - Giuseppe Di Biase
- Department of Pharmacy, "G. D'Annunzio" University of Chieti-Pescara, 66100 Chieti Scalo (CH), Italy
| | - Gianluca Morroni
- Department of Biomedical Sciences and Public Health, Polytechnic University of Marche, via Tronto 10/A, 60020 Ancona, Italy
| | - Oscar Cirioni
- Department of Biomedical Sciences and Public Health, Polytechnic University of Marche, via Tronto 10/A, 60020 Ancona, Italy
| | - Andrea Giacometti
- Department of Biomedical Sciences and Public Health, Polytechnic University of Marche, via Tronto 10/A, 60020 Ancona, Italy
| | - Antonio Di Stefano
- Department of Pharmacy, "G. D'Annunzio" University of Chieti-Pescara, 66100 Chieti Scalo (CH), Italy
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Zheng C, Bi X, Ma J, Zhao Y, Gu C. The self organizing of supramolecular helical chains in crystallized eighteen compounds of l-alanine with inorganic/organic acids. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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The achiral β-alanine self organizes into supramolecular helical chains in crystallized achiral β-alaninium inorganic/organic acid compounds. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.126920] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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A homologous series of apoptosis-inducing N‑acylserinols: Thermotropic phase behavior, interaction with cholesterol and characterization of cationic N‑myristoylserinol-cholesterol-CTAB niosomes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:504-513. [DOI: 10.1016/j.bbamem.2018.12.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 12/01/2018] [Accepted: 12/05/2018] [Indexed: 12/17/2022]
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