scholarly journals Improvements in Gold Nanorod Biocompatibility with Sodium Dodecyl Sulfate Stabilization

2021 ◽  
Author(s):  
Rossana Terracciano ◽  
Aobo Zhang ◽  
Mathieu L. Simeral ◽  
Danilo Demarchi ◽  
Jason H. Hafner ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Cell Lines ◽  
Near Infrared ◽  
Sodium Dodecyl ◽  
Living Organism ◽  
Infrared Region ◽  
Aqueous Environment ◽  
Electromagnetic Spectrum ◽  
Dependent Effect ◽  
Dodecyl Sulfate

Due to their well-defined plasmonic properties, gold nanorods (GNRs) can be fabricated with optimal light absorption in the near-infrared region of the electromagnetic spectrum, which make them suitable for cancer-related theranostic applications. However, their controversial safety profile, as a result of surfactant stabilization during synthesis, limits their clinical translation. We report a facile method to improve GNR biocompatibility through the presence of sodium dodecyl sulfate (SDS). GNRs (120 x 40 nm) were synthesized through a seed-mediated approach, using cetyltrimethylammonium bromide (CTAB) as a cationic surfactant to direct the growth of nanorods and stabilize the particles. Post-synthesis, SDS was used as an exchange ligand to modify the net surface charge of the particles from positive to negative while maintaining rod stability in an aqueous environment. GNR cytotoxic effects, as well as the mechanisms of their cellular uptake, were examined in two different cancer cell lines, Lewis lung carcinoma (LLC) and HeLa cells. We not only found a significant dose-dependent effect of GNR treatment on cell viability but also a time-dependent effect of GNR surfactant charge on cytotoxicity over the two cell lines. Our results promote a better understanding of how we can mediate the undesired consequences of GNR synthesis byproducts when exposed to a living organism, which so far has limited GNR use in cancer theranostics.

scholarly journals Improvements in Gold Nanorod Biocompatibility with Sodium Dodecyl Sulfate Stabilization

2021 ◽  
Vol 2 (3) ◽  
pp. 157-173
Author(s):  
Rossana Terracciano ◽  
Aobo Zhang ◽  
Mathieu L. Simeral ◽  
Danilo Demarchi ◽  
Jason H. Hafner ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Cell Lines ◽  
Near Infrared ◽  
Sodium Dodecyl ◽  
Living Organism ◽  
Infrared Region ◽  
Aqueous Environment ◽  
Electromagnetic Spectrum ◽  
Dependent Effect ◽  
Dodecyl Sulfate

Due to their well-defined plasmonic properties, gold nanorods (GNRs) can be fabricated with optimal light absorption in the near-infrared region of the electromagnetic spectrum, which make them suitable for cancer-related theranostic applications. However, their controversial safety profile, as a result of surfactant stabilization during synthesis, limits their clinical translation. We report a facile method to improve GNR biocompatibility through the presence of sodium dodecyl sulfate (SDS). GNRs (120 × 40 nm) were synthesized through a seed-mediated approach, using cetyltrimethylammonium bromide (CTAB) as a cationic surfactant to direct the growth of nanorods and stabilize the particles. Post-synthesis, SDS was used as an exchange ligand to modify the net surface charge of the particles from positive to negative while maintaining rod stability in an aqueous environment. GNR cytotoxic effects, as well as the mechanisms of their cellular uptake, were examined in two different cancer cell lines, Lewis lung carcinoma (LLC) and HeLa cells. We not only found a significant dose-dependent effect of GNR treatment on cell viability but also a time-dependent effect of GNR surfactant charge on cytotoxicity over the two cell lines. Our results promote a better understanding of how we can mediate the undesired consequences of GNR synthesis byproducts when exposed to a living organism, which so far has limited GNR use in cancer theranostics.

scholarly journals Comparative In Vitro Sensitivities of Human Immune Cell Lines, Vaginal and Cervical Epithelial Cell Lines, and Primary Cells to Candidate Microbicides Nonoxynol 9, C31G, and Sodium Dodecyl Sulfate

2002 ◽  
Vol 46 (7) ◽  
pp. 2292-2298 ◽  
Author(s):  
Fred C. Krebs ◽  
Shendra R. Miller ◽  
Bradley J. Catalone ◽  
Raina Fichorova ◽  
Deborah Anderson ◽  
...  
Keyword(s):  
Epithelial Cell ◽  
Sodium Dodecyl Sulfate ◽  
Cell Viability ◽  
Cell Lines ◽  
Sodium Dodecyl ◽  
Primary Cells ◽  
Cytokine Activation ◽  
Dodecyl Sulfate ◽  
Human Immune

ABSTRACT In experiments to assess the in vitro impact of the candidate microbicides nonoxynol 9 (N-9), C31G, and sodium dodecyl sulfate (SDS) on human immune and epithelial cell viability, cell lines and primary cell populations of lymphocytic and monocytic origin were generally shown to be equally sensitive to exposures ranging from 10 min to 48 h. However, U-937 cells were more sensitive to N-9 and C31G after 48 h than were primary monocyte-derived macrophages. Cytokine activation of monocytes and lymphocytes had no effect on cell viability following exposure to these microbicidal compounds. Primary and passaged vaginal epithelial cultures and cell lines differed in sensitivity to N-9 and C31G but not SDS. These studies provide a foundation for in vitro experiments in which cell lines of human immune and epithelial origin can be used as suitable surrogates for primary cells to further investigate the effects of microbicides on cell metabolism, membrane composition, and integrity and the effects of cell type, proliferation, and differentiation on microbicide sensitivity.

Rh- and Ru-complex-catalyzed dimerization of arylethynes in aqueous environment

2009 ◽  
Vol 74 (3) ◽  
pp. 433-442 ◽  
Author(s):  
Petr Novák ◽  
Martin Kotora
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Strong Preference ◽  
Aqueous Environment ◽  
Ru Complex ◽  
Dodecyl Sulfate ◽  
Rh Catalyst

Complexes [RhCl(PPh3)3] and [Ru(CHPh)Cl2(PCy3)2] efficiently catalyzed the dimerization of arylethynes to the corresponding 1,4-substituted enynes in aqueous environment in the presence of sodium dodecyl sulfate. The Rh catalyst exhibited almost exclusive preference for the formation of E-isomers, the Ru one exhibits strong preference for the formation of Z-isomers.

Optical absorption spectrum of single-walled carbon nanotubes dispersed in sodium cholate and sodium dodecyl sulfate

2008 ◽  
Vol 23 (3) ◽  
pp. 632-636 ◽  
Author(s):  
Inderpreet Singh ◽  
P.K. Bhatnagar ◽  
P.C. Mathur ◽  
L.M. Bharadwaj
Keyword(s):  
Carbon Nanotubes ◽  
Absorption Spectrum ◽  
Sodium Dodecyl Sulfate ◽  
Near Infrared ◽  
Sodium Dodecyl ◽  
Single Walled Carbon Nanotubes ◽  
Sodium Cholate ◽  
Single Walled Carbon ◽  
Dodecyl Sulfate ◽  
Walled Carbon Nanotubes

Commercially procured single-walled carbon nanotubes were dispersed in 2 wt% solution of sodium cholate and also in 1 wt% solution of sodium dodecyl sulfate. The absorption spectrum of the suspensions was studied in ultraviolet–visible–near-infrared (UV–vis–NIR) range. Two distinct bands, each containing three peaks, were observed in NIR range for both the suspensions. These peaks correspond to transitions between van Hove singularities E11 and E22 in the density of states of the semiconducting nanotubes. Comparing positions of the observed peaks with the empirical Kataura plot, the diameters and chiralities of the nanotubes were estimated. Using tight binding approximations, the diameter of the nanotubes was also estimated theoretically. Discrepancies between the theoretically calculated diameters and those obtained by empirical Kataura plots are found to be higher for E11 peaks. It has been suggested that the reason for this discrepancy is that the observed E11 peaks are blue-shifted due to Coulomb interactions and exciton formation.

Solubility and adsorption behaviors of chlorophenols in the presence of surfactant

1997 ◽  
Vol 35 (7) ◽  
pp. 123-130 ◽  
Author(s):  
J. C. Liu ◽  
P. S. Chang
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Critical Micelle Concentration ◽  
Sodium Dodecyl ◽  
Adsorption Behaviors ◽  
Brij 35 ◽  
Important Index ◽  
Dodecyl Sulfate ◽  
Triton X

The solubility of chlorophenols as affected by surfactant was investigated. Three kinds of surfactant, sodium dodecyl sulfate, Triton X-100, and Brij 35, were utilized. The solubilization of chlorophenols by surfactant follows the order of 2,4,6-trichlorophenol > 2,4-dichlorophenol > 2,6-dichlorophenol > 2-chlorophenol; and the critical micelle concentration is an important index. The adsorption reactions of 2,4-dichlorophenol and 2,4,6- trichlorophenol onto hydrous montmorillonite in the presence of surfactant were examined. The presence of surfactant decreased the adsorption of chlorophenols significantly. The roles of hydrophobicity of chlorophenols in solubilization and adsorption behaviors are discussed.

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