Cyclodextrins as eminent constituents in nanoarchitectonics for drug delivery systems

• Makoto Komiyama

Beilstein J. Nanotechnol. 2023, 14, 218–232, doi:10.3762/bjnano.14.21

• nucleic acids are RNAs, DNAs, and derivatives thereof that regulate the expression of target genes [57][58][59]. Typical examples are antisense DNA, small interfering RNA (siRNA), aptamers, and ribozymes/DNAzymes. Owing to the accurate targeting at pathogenic genes, they are promising for various

• double-stranded RNA of 21–23 base-pair length and a powerful tool to suppress the expression of target genes [60][61]. However, siRNAs are easily digested by nucleases in our body and difficult to deliver to target cells without appropriate tactics. The use of CyD-based nanoarchitectures as vehicles is

• compounds. Because of the decomposition of nanomedicines through these two pathways, the siRNA was efficiently released in target cells and silenced the pathogenic gene. 3.3 Simultaneous delivery of multiple types of therapeutic drugs When two types of therapeutic DNA (or RNA) drugs are simultaneously

Single-step extraction of small-diameter single-walled carbon nanotubes in the presence of riboflavin

• Polina M. Kalachikova,
• Anastasia E. Goldt,
• Eldar M. Khabushev,
• Timofei V. Eremin,
• Timofei S. Zatsepin,
• Elena D. Obraztsova,
• Konstantin V. Larionov,
• Liubov Yu. Antipina,
• Pavel B. Sorokin and
• Albert G. Nasibulin

Beilstein J. Nanotechnol. 2022, 13, 1564–1571, doi:10.3762/bjnano.13.130

• and discard toxic residual surfactants, which would otherwise limit biological applications. Biopolymers such as DNA and RNA have been widely proven to disperse SWCNTs. Nucleic acids even exhibit sequence-dependent wrapping around nanotubes with different chiralities [12][13][14][15]. The remarkable

DNA aptamer selection and construction of an aptasensor based on graphene FETs for Zika virus NS1 protein detection

• Nathalie B. F. Almeida,
• Thiago A. S. L. Sousa,
• Viviane C. F. Santos,
• Camila M. S. Lacerda,
• Thais G. Silva,
• Rafaella F. Q. Grenfell,
• Flavio Plentz and
• Antero S. R. Andrade

Beilstein J. Nanotechnol. 2022, 13, 873–881, doi:10.3762/bjnano.13.78

• in a sentinel monkey [3]. As with other Flaviviridae members, ZIKV has a single-stranded RNA genome and three structural proteins, namely capsid, pre-membrane, and envelope, building the capsid, and seven non-structural (NS) proteins, NS1, NS2A, NS2B, NS3, NS4A, NS4B, and NS5, involved in virus

Alcohol-perturbed self-assembly of the tobacco mosaic virus coat protein

• Ismael Abu-Baker and
• Amy Szuchmacher Blum

Beilstein J. Nanotechnol. 2022, 13, 355–362, doi:10.3762/bjnano.13.30

• are 300 nm in length and 18 nm in diameter with a 4 nm central channel. The viral RNA is encapsidated near the inner radius [16]. The tobacco mosaic virus coat protein (TMV-cp) is a 158 amino acid protein with a mass of approximately 17.5 kDa. In the absence of viral RNA, TMV-cp self-assembles into a

Photothermal ablation of murine melanomas by Fe₃O₄ nanoparticle clusters

• Xue Wang,
• Lili Xuan and
• Ying Pan

Beilstein J. Nanotechnol. 2022, 13, 255–264, doi:10.3762/bjnano.13.20

• gene GAPDH. Semi-quantitative reverse transcription-PCR (RT-PCR) and qPCR Treatments of A375 cells were identical to those mentioned above. Total RNAs were isolated via TRIzol method following the vendor’s manual (Invitrogen) and quantified by NanoDrop. After DNase I treatment (Roche), 1 µg RNA was

Bacterial safety study of the production process of hemoglobin-based oxygen carriers

• Axel Steffen,
• Yu Xiong,
• Radostina Georgieva,
• Ulrich Kalus and
• Hans Bäumler

Beilstein J. Nanotechnol. 2022, 13, 114–126, doi:10.3762/bjnano.13.8

• inhibit DNA synthesis in bacteria, and similar effects are also seen on RNA and protein syntheses [44][45]. In addition, glutaraldehyde particularly acts on the outer layers of E. coli and cross-links lipoproteins and proteins there as well. This fixation of bacteria prevents the bacterial cells from

Theranostic potential of self-luminescent branched polyethyleneimine-coated superparamagnetic iron oxide nanoparticles

• Rouhollah Khodadust,
• Ozlem Unal and
• Havva Yagci Acar

Beilstein J. Nanotechnol. 2022, 13, 82–95, doi:10.3762/bjnano.13.6

• between the negative charge (due to the phosphate group of dsRNA/poly I:C) and the positive charge of the nanoparticles (due to primary amine groups of polyethyleneimine). This is due to the fact that the highly positively charged PEI electrostatically condenses high molecular weight DNA or RNA to

Biocompatibility and cytotoxicity in vitro of surface-functionalized drug-loaded spinel ferrite nanoparticles

• Sadaf Mushtaq,
• Khuram Shahzad,
• Tariq Saeed,
• Anwar Ul-Hamid,
• Bilal Haider Abbasi,
• Nafees Ahmad,
• Waqas Khalid,
• Muhammad Atif,
• Zulqurnain Ali and
• Rashda Abbasi

Beilstein J. Nanotechnol. 2021, 12, 1339–1364, doi:10.3762/bjnano.12.99

• , however, leads to apoptosis [58]. Conversely, Ki-67 is an important proliferative and prognostic cancer biomarker expressed in the nucleus during the cell cycle. It is important for cell division and biosynthesis of ribosomal RNA and it is variably expressed throughout the cell cycle (high in the G2/M

Comprehensive review on ultrasound-responsive theranostic nanomaterials: mechanisms, structures and medical applications

• Sepand Tehrani Fateh,
• Lida Moradi,
• Elmira Kohan,
• Michael R. Hamblin and
• Amin Shiralizadeh Dezfuli

Beilstein J. Nanotechnol. 2021, 12, 808–862, doi:10.3762/bjnano.12.64

Silver nanoparticles induce the cardiomyogenic differentiation of bone marrow derived mesenchymal stem cells via telomere length extension

• Khosro Adibkia,
• Ali Ehsani,
• Asma Jodaei,
• Ezzatollah Fathi,
• Raheleh Farahzadi and
• Mohammad Barzegar-Jalali

Beilstein J. Nanotechnol. 2021, 12, 786–797, doi:10.3762/bjnano.12.62

• expression assessment BM-MSCs were plated at a density of 2 × 106 cells/well in 6-well plates containing cardiomyocyte differentiation medium for 14 days, and were divided into three groups, as described above. At the end of the 14th day, total RNA was extracted and cDNA was synthesized from

• concentration of 1 × 106 cells/well. Protein and RNA were extracted from group I (cardiomyogenically differentiated BM-MSCs without Ag-NP treatment), group II (BM-MSCs in the presence of 2.5 µg/mL Ag-NPs), and group III (cardiomyogenically differentiated BM-MSCs in the presence of 2.5 µg/mL Ag-NPs) as described

• ) Protein and RNA were extracted from group I (cardiomyogenically differentiated BM-MSCs without Ag-NP treatment), group II (BM-MSCs in the presence of 2.5 µg/mL Ag-NPs), and III (cardiomyogenically differentiated BM-MSCs in the presence of 2.5 µg/mL Ag-NPs) as described in methods section and was subjected

A review on nanostructured silver as a basic ingredient in medicine: physicochemical parameters and characterization

• Gabriel M. Misirli,
• Kishore Sridharan and
• Shirley M. P. Abrantes

Beilstein J. Nanotechnol. 2021, 12, 440–461, doi:10.3762/bjnano.12.36

• not exert their antibacterial effects in a single specific location, but rather at several levels (e.g., in the bacterial wall and by blocking electron transfer, in cell respiration and replication due to the damage to the proteins, RNA, and DNA [8][107]). In addition, there is substantial evidence

• oxidative changes in the internal structure of cellular proteins, RNA, and DNA leading to redox changes, which in extreme conditions can lead to cell death by apoptosis [11][23][108]. Wakshlak et al. presented a new action mechanism of silver, called the "zombie effect". The AgNPs interact with the cellular

• components of the dead bacteria (i.e., RNA, polysaccharides, phospholipids, proteins, and DNA,) and are stabilized and capped by the genetic material of the bacteria (AgNPs–bac). According to the Le Chatelier’s principle, AgNPs are redirected to live bacteria with a higher potential for lethality according

Differences in surface chemistry of iron oxide nanoparticles result in different routes of internalization

• Barbora Svitkova,
• Vlasta Zavisova,
• Veronika Nemethova,
• Martina Koneracka,
• Miroslava Kretova,
• Filip Razga,
• Monika Ursinyova and
• Alena Gabelova

Beilstein J. Nanotechnol. 2021, 12, 270–281, doi:10.3762/bjnano.12.22

• the IncuCyte ZOOM™ Live Content Imaging System (Essen BioScience, Hertfordshire, UK) at 2 h intervals. Cell morphology and confluence after exposure to inhibitors were monitored using the IncuCyte ZOOM 2013A software as recommended by the manufacturer. Real-time RT-PCR (qRT-PCR) Total RNA was isolated

• from cells using the phenol-chloroform method (TRIzol, Invitrogen, Carlsbad, CA) as recommended by the manufacturer and then purified and treated with DNase I. RNA concentration and purity were measured on a spectrophotometer (NanoDrop, Thermo Scientific). Degradation of RNA was excluded by

• electrophoresis. The cDNA was prepared using the RevertAid First Strand cDNA kit (Thermo Fisher Scientific) using 1 µg of total RNA according to the protocol recommended by the manufacturer. Gene expression was measured by semi-quantitative real-time PCR using SYBR Green dye (Maxima SYBR Green qPCR Master Mix kit

Brome mosaic virus-like particles as siRNA nanocarriers for biomedical purposes

• Alfredo Nuñez-Rivera,
• Pierrick G. J. Fournier,
• Danna L. Arellano,
• Ana G. Rodriguez-Hernandez,
• Rafael Vazquez-Duhalt and
• Ruben D. Cadena-Nava

Beilstein J. Nanotechnol. 2020, 11, 372–382, doi:10.3762/bjnano.11.28

• effects on tumor cells in vitro. However, only BMV did not activate macrophages in vitro. This suggests that BMV is less immunogenic and may be a potential carrier for therapy delivery in tumor cells. Furthermore, BMV virus-like particles (VLPs) were efficiently loaded with small interfering RNA (siRNA

• chlorotic mottle virus (CCMV); nanocarriers; plant virus-like particles (VLPs); siRNA delivery; small interfering RNA (siRNA); Introduction Despite many efforts taken, the efficient and specific delivery of therapeutic molecules to tumor cells is still a unsolved challenge. Cancer therapies are often

• RNA genome [22]. Also, the casid protein able to encapsidate anionic molecules, such as heterologous RNAs [23], enzymes [24], drugs [25], or gold nanoparticles [26] by charge complementarity with the possibility of directing them to target cells through the functionalization of the external surface of

Poly(1-vinylimidazole) polyplexes as novel therapeutic gene carriers for lung cancer therapy

• Gayathri Kandasamy,
• Elena N. Danilovtseva,
• Vadim V. Annenkov and
• Uma Maheswari Krishnan

Beilstein J. Nanotechnol. 2020, 11, 354–369, doi:10.3762/bjnano.11.26

• Russian Academy of Sciences, 3, Ulan-Batorskaya St., P.O. Box 278, Irkutsk, 664033, Russia 10.3762/bjnano.11.26 Abstract The present work explores the ability of poly(1-vinylimidazole) (PVI) to complex small interfering RNA (siRNA) silencing vascular endothelial growth factor (VEGF) and the in vitro

• that have been connected to the proliferation and invasion of lung cancer cells. These results indicate that the PVI complexes can be an effective agent to counter lung cancer. Keywords: anti-VEGF siRNA; gene silencing; lung cancer; microarray; poly(1-vinylimidazole); small interfering RNA (siRNA

• applications [18]. A folic acid-conjugated amine containing poly(1-vinylimidazole) was found to effectively complex DNA and transfect cancer cells [19]. PVI linked with the dipeptide Cys–Trp was demonstrated to self-assemble to micelles that could also complex RNA effectively. Very few studies have also

Interactions at the cell membrane and pathways of internalization of nano-sized materials for nanomedicine

• Valentina Francia,
• Daphne Montizaan and
• Anna Salvati

Beilstein J. Nanotechnol. 2020, 11, 338–353, doi:10.3762/bjnano.11.25

• endocytosis and caveolae-mediated endocytosis. Hence, perturbing the activity of actin affects multiple pathways at the same time [212]. Several techniques can be used for studying the endocytic mechanisms of nano-sized materials, each one with its advantages and drawbacks [22][133]. Among those, RNA

Using gold nanoparticles to detect single-nucleotide polymorphisms: toward liquid biopsy

• María Sanromán Iglesias and
• Marek Grzelczak

Beilstein J. Nanotechnol. 2020, 11, 263–284, doi:10.3762/bjnano.11.20

• ], microRNA, RNA [32] and proteins [33] (Figure 1). For the discussion here, the detection of circulating cell-free DNA is relevant. While all types of cells (tumor and nonmalignant) release cfDNA into the extracellular system [34], the circulating tumor DNA (ctDNA) is released uniquely by tumor cells

• influence the promoter activity (gene expression), the activity of messenger RNA (mRNA), gene conformation (stability) and the translational efficiency. Keeping in mind the importance of these modifications, SNPs can be proposed as biomarkers in the clinical diagnosis of diseases, personalized medicine and

• mismatches in short DNA–RNA duplexes. The method reached a detection limit of 5 nM for mismatched miRNA (G-miR-122). Another enzyme-assisted approach used in the discrimination of single-base mutations involves the combination of nicking endonuclease (NEase) and DNA polymerase giving rise to the so-called

Molecular architectonics of DNA for functional nanoarchitectures

• Debasis Ghosh,
• Lakshmi P. Datta and
• Thimmaiah Govindaraju

Beilstein J. Nanotechnol. 2020, 11, 124–140, doi:10.3762/bjnano.11.11

• , the nanoscale and the biomacromolecular interface, to produce functional architectures. In this context, the well-defined structural organization, anionic properties, and polymeric nature qualify DNA and RNA as potential

Internalization mechanisms of cell-penetrating peptides

• Ivana Ruseska and
• Andreas Zimmer

Beilstein J. Nanotechnol. 2020, 11, 101–123, doi:10.3762/bjnano.11.10

• complexes with cargo molecules through electrostatic interaction. Pep-1 has successfully been used to deliver small peptides and proteins into cells, while MPG has shown to efficiently deliver small interfering RNA (siRNA) into cultured cell lines [3][10]. The interplay between hydrophilic and hydrophobic

• -mediated endocytosis. RNA interference-mediated knockdown experiments in combination with pharmacological inhibitors support their results. These results contradict the former findings of the group, which stated that syndecans were involved in the uptake of R8 via macropinocytosis. However, there is a

The different ways to chitosan/hyaluronic acid nanoparticles: templated vs direct complexation. Influence of particle preparation on morphology, cell uptake and silencing efficiency

• Arianna Gennari,
• Julio M. Rios de la Rosa,
• Erwin Hohn,
• Maria Pelliccia,
• Enrique Lallana,
• Roberto Donno,
• Annalisa Tirella and
• Nicola Tirelli

Beilstein J. Nanotechnol. 2019, 10, 2594–2608, doi:10.3762/bjnano.10.250

• delivery is the ability of the carrier to protect the cargo from enzymatic degradation to allow its release in the cytoplasm, where the RNA machinery is located. Hence, as a first step we ruled out any differences in the protective behaviour of our nanoparticles between preparative methods (Figure 4

• ). Specifically, siRNA-loaded nanoparticles were incubated in the presence of RNAse I at concentrations sufficiently high to degrade partially (at 0.5 U) or completely (at 5 U) the same amount of non-encapsulated nucleic acid (labelled as “free” in Figure 4). RNA was then decomplexed by enzymatically digesting

• chitosan and further displacing its fragments with heparin (more strongly anionic than HA and RNA), and finally analysed by gel electrophoresis. The central point is that all nanoparticles protected their payload from RNAse. Secondly, we evaluated the biocompatibility of these nanoparticles using two

Long-term stability and scale-up of noncovalently bound gold nanoparticle-siRNA suspensions

• Anna V. Epanchintseva,
• Julia E. Poletaeva,
• Dmitrii V. Pyshnyi,
• Elena I. Ryabchikova and
• Inna A. Pyshnaya

Beilstein J. Nanotechnol. 2019, 10, 2568–2578, doi:10.3762/bjnano.10.248

• nanoparticles (AuNPs) are a platform for the creation of nanoconstructions that can have a variety of functions, including the delivery of therapeutic nucleic acids. We previously designed a AuNP/small interfering RNA (siRNA) nanoconstruction consisting of siRNA noncovalently bound on the AuNP surface and

• including the opportunity to directly observe the site of drug location and monitor its movement in a cell, thereby making AuNPs particularly attractive for TNA studies, since different TNAs operate in cell different areas [1][4][5]. Small interfering RNA (siRNA) are considered to be a powerful tool for

• . Experimental Materials and methods We used RNA phosphoramidite synthons, dithiothreitol (DTT), sodium citrate (Na3C6H5O7·2H2O, Sigma-Aldrich, USA); Cy-5.5 phosphoramidite (Primetech, Belarus); aurum hydrochloric acid (HAuCl4·3H2O, Aurat, Russia); human serum albumin (HSA, Reanal, Hungary); sodium chloride

Frontiers in pharmaceutical nanotechnology

• Matthias G. Wacker

Beilstein J. Nanotechnol. 2019, 10, 2538–2540, doi:10.3762/bjnano.10.244

• announced the approval of a first-of-its-kind RNA interference (RNAi)-based drug, Onpattro™, which uses solid lipid nanoparticles to protect the sensitive compound from early degradation. Again, lipid materials rather than synthetic polymers have been used for drug delivery applications. In pharmaceutical

Microbubbles decorated with dendronized magnetic nanoparticles for biomedical imaging: effective stabilization via fluorous interactions

• Da Shi,
• Justine Wallyn,
• Dinh-Vu Nguyen,
• Francis Perton,
• Delphine Felder-Flesch,
• Sylvie Bégin-Colin,
• Mounir Maaloum and
• Marie Pierre Krafft

Beilstein J. Nanotechnol. 2019, 10, 2103–2115, doi:10.3762/bjnano.10.205

• phospholipids allowed for the preparation of MBs that enabled transfection of neuroblastoma cells with a generic, fluorescent, small, interfering RNA under magnetic and ultrasound fields [26]. In the present work, we incorporated IONPs coated by dendritic phosphonates bearing oligo(ethylene glycol) (OEG) chains

Review of advanced sensor devices employing nanoarchitectonics concepts

• Katsuhiko Ariga,
• Tatsuyuki Makita,
• Masato Ito,
• Taizo Mori,
• Shun Watanabe and
• Jun Takeya

Beilstein J. Nanotechnol. 2019, 10, 2014–2030, doi:10.3762/bjnano.10.198

• optimize the discrimination between uracil and thymine derivatives [178][179] that cannot be discriminated by naturally occurring DNA and RNA. Although the structural difference between uracil and thymine is only one methyl group, the difference in the binding constant between them is more than 60 times. A

Enhanced inhibition of influenza virus infection by peptide–noble-metal nanoparticle conjugates

• Zaid K. Alghrair,
• David G. Fernig and
• Bahram Ebrahimi

Beilstein J. Nanotechnol. 2019, 10, 1038–1047, doi:10.3762/bjnano.10.104

• pandemics, e.g., the 2009 H1N1 subtype swine influenza, which resulted in more than 18000 deaths worldwide [1]. The treatment of influenza infections is difficult, because the virus has a segmented RNA genome that has a high potential to recombine and create new strains through a mechanism termed re

Biocompatible organic–inorganic hybrid materials based on nucleobases and titanium developed by molecular layer deposition

• Leva Momtazi,
• Henrik H. Sønsteby and
• Ola Nilsen

Beilstein J. Nanotechnol. 2019, 10, 399–411, doi:10.3762/bjnano.10.39

• and therapy, and probes for biosensing [1]. Nucleobases are constituents of DNA and RNA and can interact with different metals to form several molecular assemblies [2][3]. In the 1960s, a powerful antitumor agent named cisplatin (cis-[Pt(NH3)2Cl2]) was discovered by Rosenberg [4]. Later it was