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Falsafi M, Hassanzadeh Goji N, Sh Saljooghi A, Abnous K, Taghdisi SM, Nekooei S, Ramezani M, Alibolandi M. Synthesis of a targeted, dual pH and redox-responsive nanoscale coordination polymer theranostic against metastatic breast cancer in vitro and in vivo. Expert Opin Drug Deliv 2022; 19:743-754. [PMID: 35616345 DOI: 10.1080/17425247.2022.2083602] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Nanoscale coordination polymers (nCP) have exhibited a great potential in designing of the theranostic platforms in the latest years. However, they have low selectivity for cancerous tissues and require to be modified for becoming effective cancer therapeutics. In this study, a novel nanoscale pH and redox-responsive coordination polymer with high selectivity was synthesized. METHODS The nCP was synthesized by iron(III) chloride and dithiodiglycolic acid. After loading the prepared nCP with doxorubicin (DOX), nCP was coated with an amphiphilic copolymer composed of α-tocopheryl succinate-polyethylene glycol (VEP). Next, AS1411 aptamer was decorated on the VEP shell of the DOX-loaded nCP (Apt-VEP-nCP@DOX) to provide a guided drug delivery platform. RESULTS The prepared platform demonstrated high DOX loading capacity and pH and redox-responsive DOX release. Apt-VEP-nCP@DOX displayed greater DOX internalization and toxicity towards breast cancer cells of 4T1 and MCF7 compared with that of non-targeted VEP-nCP@DOX. Also, the intravenous injection of Apt-VEP-nCP@DOX (a single dose) considerably suppressed the 4T1 tumor growth in vivo. Moreover, Apt-VEP-nCP@DOX showed outstanding magnetic resonance (MR) imaging capability for 4T1 adenocarcinoma diagnosis in ectopic 4T1 tumor model in mice. CONCLUSIONS The developed innovative intelligent Apt-VEP-nCP@DOX could serve as a safe and biocompatible theranostic platform appropriate for further translational purposes against breast cancer.
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Affiliation(s)
- Monireh Falsafi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Amir Sh Saljooghi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sirous Nekooei
- Department of Radiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Terbinafine hydrochloride nail lacquer for the management of onychomycosis: formulation, characterization and in vitro evaluation. Ther Deliv 2019; 9:99-119. [PMID: 29325509 DOI: 10.4155/tde-2017-0069] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
AIM The present investigation's intention was to develop an optimized nail lacquer (NL) for the management of onychomycosis. MATERIALS & METHODS The NL was optimized statistically adopting 32 full factorial design having different polymer ratios and solvent ratios. The formulations were assessed for drug permeation drying time and peak adhesive strength of the film. Characterization was done using techniques including attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), x-ray diffraction (XRD), etc. RESULTS & CONCLUSION The formulation that had 1:1 polymer ratio and 80:20 solvent ratio was chosen as the optimized formulation. In vitro permeation studies showed better penetration (∼3.25-fold) as well as retention (∼11-fold) of the optimized NL formulation in the animal hoof as compared with the commercial formulation. The findings of in vitro and ex vivo studies elucidated the potential of the optimized formulation. [Formula: see text].
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HODAGE AS, PHADNIS PP, WADAWALE A, PRIYADARSINI KI, JAIN VK. Crystal Structure of 2,2'-Diselenobis(acetic acid). X-RAY STRUCTURE ANALYSIS ONLINE 2009. [DOI: 10.2116/xraystruct.25.101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Demirhan F, Taban G, Baya M, Dinoi C, Daran JC, Poli R. Reduction of by thioglycolic acid in an aqueous medium: Synthesis and structure of [{Cp*Mo(μ-SCH2COO)}2(μ-S)]. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.10.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Khrustalev VN, Antipin MY, Kosnikov AY, Antonovskii VL. Molecular and crystal structure of diperoxides: X-ray diffraction studies of 2,5-dimethyl-2,5-dihydroperoxyhexane, 2,5-dimethyl-2,5-dihydroperoxyhex-3-ine, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, and 1,4-bis[2-(2-tert-butylperoxy)propyl]benzene. CRYSTALLOGR REP+ 2004. [DOI: 10.1134/1.1803304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gniadecka M, Faurskov Nielsen O, Christensen DH, Wulf HC. Structure of water, proteins, and lipids in intact human skin, hair, and nail. J Invest Dermatol 1998; 110:393-8. [PMID: 9540981 DOI: 10.1046/j.1523-1747.1998.00146.x] [Citation(s) in RCA: 260] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Raman spectroscopy is a nondestructive analytical method for determining the structure and conformation of molecular compounds. It does not require sample preparation or pretreatment. Recently, near-infrared Fourier transform Raman spectroscopy has emerged as being specially suited for investigations of biologic material. In this study, we obtained near-infrared Fourier transform Raman spectra of intact human skin, hair, nail, and stratum corneum. We disclosed major spectral differences in conformational behavior of lipids and proteins between normal skin, hair, and nail. The amide I and III band location indicated that the majority of proteins in all samples have the same secondary alpha-helix structure. Positions of (S-S) stretching bands of proteins revealed a higher stability of the disulfide bonds in the hair and the nail. Analysis of vibrations of protein -CH groups showed that in the hair and the nail the proteins are apparently highly folded, interacting with the surroundings only to a small degree. The position of lipid specific peaks in spectra of hair, nail, and stratum corneum suggested a highly ordered, lamellar crystalline lipid structure. A greater lipid fluidity was found in whole skin. Assessment of the structure of water clusters revealed that mainly bound water is present in the human skin, stratum corneum, and nail. In conclusion, structural changes of water, proteins, and lipids in intact skin and skin appendages may be analyzed by Raman spectroscopy. This technique may be used in the future in a noninvasive analysis of structural changes in molecular compounds in the skin, hair, and nail associated with different dermatologic diseases.
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Affiliation(s)
- M Gniadecka
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Denmark
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Mori N, Ishizaki H, Tu AT. Isolation and characterization of Pelamis platurus (yellow-bellied sea snake) postsynaptic isoneurotoxin. J Pharm Pharmacol 1989; 41:331-4. [PMID: 2569520 DOI: 10.1111/j.2042-7158.1989.tb06466.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Pelamis platurus (yellow-bellied sea snake) venom contains several neurotoxins, the major toxin, which is most toxic, and two other isotoxins. The second most toxic neurotoxin (Pelamis toxin b) was isolated and characterized. It contains 60 amino acid residues with only one residue difference from the major toxin, Pelamis toxin a. The difference is at the tenth amino acid residue from the acid terminal. The isoelectric point of toxin b is 8.7. Raman spectroscopic examination of toxin b indicates that the toxin contains a considerable amount of antiparallel beta-structure, beta-turn, and random coil without alpha-helix as the amide I band appears at 1673 cm-1 and the amide III band at 1246 cm-1. Circular dichroic studies also indicate a typical beta-sheet structure. The Pelamis toxin b is a typical postsynaptic neurotoxin as it binds to the acetylcholine receptor competitively with a well known toxin, alpha-bungarotoxin. The LD50 of toxin b is 0.185 microgram g-1 in mice by intravenous injection, indicating high toxicity of a postsynaptic neurotoxin.
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Affiliation(s)
- N Mori
- Department of Biochemistry, Colorado State University, Fort Collins 80523
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Mori N, Tu AT, Maurer A. Characterization of nicked myotoxin a and its effect on the sarcoplasmic reticulum calcium pump. Arch Biochem Biophys 1988; 266:171-80. [PMID: 2972257 DOI: 10.1016/0003-9861(88)90247-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Myotoxin a, a muscle-necrotizing polypeptide isolated from Crotalus viridis viridis (prairie rattlesnake) venom, was nicked at Met-28 by cyanogen bromide. Amino acid analysis indicated that the methionine content was reduced to zero from the original 1 mol. Judging from circular dichroism, the nicked myotoxin a had a conformation similar to that of original myotoxin. Raman spectra indicated that the conformations of the three disulfide bonds are not affected in nicked myotoxin a. Like the original toxin, nicked myotoxin a was myotoxic and inhibited calcium ion loading activity, although the inhibitory action was slightly lower than that of the original myotoxin a. Both modified and unmodified myotoxin a showed myonecrotic activity as determined by examining histological slides. The modified toxin also inhibited the formation of decavanadate-induced two-dimensional crystalline arrays of the sarcoplasmic reticulum Ca2+-ATPase just as the original myotoxin a does.
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Affiliation(s)
- N Mori
- Department of Biochemistry, Colorado State University, Fort Collins 80523
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Mori N, Tu AT. Isolation and primary structure of the major toxin from sea snake, Acalyptophis peronii, venom. Arch Biochem Biophys 1988; 260:10-7. [PMID: 3341735 DOI: 10.1016/0003-9861(88)90418-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The major neurotoxin from the venom of Acalyptophis peronii captured in the Gulf of Thailand was isolated. Although there are two toxic fractions in the venom, the most toxic and abundant fraction was selected for purification and chemical characterization. The LD50 of the major toxin is 0.125 micrograms/g mice, indicating an extremely toxic nature. The toxin consists of 60 amino acid residues with methionine as the amino-terminal and asparagine as the carboxy-terminal end. It contains nine half-cystine residues. There is 1 mol each of tryptophan, tyrosine, methionine, valine, aspartic acid, leucine, and alanine, and there is no phenylalanine. The molecular weight calculated from the amino acid sequence determination was 6600. The toxin replaces alpha-bungarotoxin in binding with the acetylcholine receptor, indicating that the A. peronii major neurotoxin competes with alpha-bungarotoxin for the same binding site of the acetylcholine receptor.
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Affiliation(s)
- N Mori
- Department of Biochemistry, Colorado State University, Fort Collins 80523
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The effect of sunlight on the protein crystals from Bacillus thuringiensis var. kurstaki HD1 and NRD12: A Raman spectroscopic study. J Invertebr Pathol 1987. [DOI: 10.1016/0022-2011(87)90089-9] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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