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

• 200 nm may be cleared by phagocytic cells in the reticulo-endothelial system (RES). Many studies reported that therapeutic nanoparticles in the size range of 20–200 nm showed a higher accumulation rate in tumors because they cannot be recognized by the RES nor filtrated by the kidney [33][36]. In case

• internalization of BSA-SO-MNPs via CME was also observed in murine primary podocytes and mesangial cells (unpublished results). In endothelial cells, albumin has been shown to bind to albondin, a 60 kDa glycoprotein (gp60) receptor localized in caveolae. The interaction between gp60 and caveolin-1, which is

Effect of different silica coatings on the toxicity of upconversion nanoparticles on RAW 264.7 macrophage cells

• Cynthia Kembuan,
• Helena Oliveira and
• Christina Graf

Beilstein J. Nanotechnol. 2021, 12, 35–48, doi:10.3762/bjnano.12.3

• particles [45]. Xia et al. investigated cell type-dependent cytotoxicity in RAW 264.7, epithelial (BEAS-2B), human microvascular endothelial (HMEC), hepatoma (HEPA-1), and pheochromocytoma (PC-12) cells after exposure to amine-functionalized polystyrene nanoparticles (NH2-PS) [64]. They observed that

Bio-imaging with the helium-ion microscope: A review

• Matthias Schmidt,
• James M. Byrne and
• Ilari J. Maasilta

Beilstein J. Nanotechnol. 2021, 12, 1–23, doi:10.3762/bjnano.12.1

• filaments joining adjacent microvilli” at high magnification. Tsuji et al. investigated the alteration of endothelium and podocytes during progressing glumerulopathy in Col4a3 (Alport syndrome) mice [73]. HIM was used to visualise the podocyte and endothelial interface, which, in contrast to previously

• published transmission electron micrographs of sections, provided pseudo-3D data. The authors pointed out that using conventional SEM it was not possible to determine whether the glomerular basement membrane defect affects the endothelial structure. However, they stated “HIM allows the endothelial surface

Cardiomyocyte uptake mechanism of a hydroxyapatite nanoparticle mediated gene delivery system

• Hiroaki Komuro,
• Masahiro Yamazoe,
• Kosuke Nozaki,
• Akiko Nagai and
• Tetsuo Sasano

Beilstein J. Nanotechnol. 2020, 11, 1685–1692, doi:10.3762/bjnano.11.150

• endocytosis involved in the uptake process [20][21]. Therefore, understanding the cellular uptake mechanism of HAp nanoparticles may be useful for the design of more efficient gene-delivery vectors. We previously demonstrated that the cellular uptake of HAp nanoparticles into endothelial cells (ECs) was

• vector in HL-1 cells, we used plasmid-enhanced green fluorescent protein (pEGFP) as a model plasmid and evaluated the transfection efficiency via fluorescence microscopy. First, we used HAp (1 µg/mL) mixed with 0.075, 0.30, and 0.75 µg pEGFP, based on our previous results with endothelial cells

• dose-dependent manner. The amount of 0.75 µg was selected for subsequent cell experiments. The transfection efficiency of the HAp vector in HL-1 cells was three times higher than that of the endothelial cells in our previous study [22]. Endocytic pathway Under physiological conditions, nanoparticles

Transient coating of γ-Fe₂O₃ nanoparticles with glutamate for its delivery to and removal from brain nerve terminals

• Konstantin Paliienko,
• Artem Pastukhov,
• Michal Babič,
• Daniel Horák,
• Olga Vasylchenko and
• Tatiana Borisova

Beilstein J. Nanotechnol. 2020, 11, 1381–1393, doi:10.3762/bjnano.11.122

• [39]. The neuronal release of glutamate modulates the blood–brain barrier function, through activation of N-methyl-ᴅ-aspartate (NMDA) receptors [40]. Glutamate increased intracellular calcium levels in endothelial cells and levels of nitrogen oxide (NO) around microvessels. These results can be

• considered in support of a mechanism of glutamate-induced activation of NMDA receptors in endothelial cells, which leads to calcium signaling and downstream NO production to promote blood–brain barrier permeability [38]. Thus, it may be expected that glutamate-conjugated γ-Fe2O3 nanoparticles can more easily

Applications of superparamagnetic iron oxide nanoparticles in drug and therapeutic delivery, and biotechnological advancements

• Maria Suciu,
• Corina M. Ionescu,
• Alexandra Ciorita,
• Septimiu C. Tripon,
• Dragos Nica,
• Hani Al-Salami and
• Lucian Barbu-Tudoran

Beilstein J. Nanotechnol. 2020, 11, 1092–1109, doi:10.3762/bjnano.11.94

• are transported to liver, spleen, and lymph nodes and engulfed by the reticuloendothelial system [123]. SPIONs reach lymph nodes either directly through endothelium and macrophage phagocytosis, or through non-selective endothelial transcytosis into the interstitial space and draining by lymphatic

Key for crossing the BBB with nanoparticles: the rational design

• Sonia M. Lombardo,
• Marc Schneider,
• Akif E. Türeli and
• Nazende Günday Türeli

Beilstein J. Nanotechnol. 2020, 11, 866–883, doi:10.3762/bjnano.11.72

• Central nervous system diseases are a heavy burden on society and health care systems. Hence, the delivery of drugs to the brain has gained more and more interest. The brain is protected by the blood–brain barrier (BBB), a selective barrier formed by the endothelial cells of the cerebral microvessels

• damaged by ischemia [2]. One of the main limitations for the treatment of neurological disorders is the difficulty to deliver drugs to the brain. The brain is surrounded by the blood–brain barrier (BBB), a selective barrier formed by the endothelial cells of the cerebral microvessels [3][4]. The surface

• function, the BBB has a unique anatomy. The brain endothelial cells are joined by tight junctions and do not present fenestrations [5][6][7][8]. The endothelial cells are surrounded firstly by a discontinuous layer of pericytes and secondly by the basal lamina, adjacent to the astrocyte feet (Figure 1

Identification of physicochemical properties that modulate nanoparticle aggregation in blood

• Ludovica Soddu,
• Duong N. Trinh,
• Eimear Dunne,
• Dermot Kenny,
• Giorgia Bernardini,
• Ida Kokalari,
• Arianna Marucco,
• Marco P. Monopoli and
• Ivana Fenoglio

Beilstein J. Nanotechnol. 2020, 11, 550–567, doi:10.3762/bjnano.11.44

• activation of some factors by surface-driven exposure of cryptic domains following adsorption was reported in some studies [5][6]. Other studies have reported the NPs ability to damage or activate platelets, endothelial cells or monocytes [4]. Some physicochemical properties, including the surface charge and

• platelets [16]. Additionally, SNPs were found to induce pre-thrombotic states through surface-driven activation of the coagulation factor XII [17][18]. Finally, SNPs are known to induce oxidative stress in several cell lines including endothelial cells [19] and leucocytes [20][21], a process that in vivo

• . Platelet adhesion Activated platelets are physiologically programmed to adhere to the endothelial wall of damaged blood vessels. The VWF anchored to damaged endothelial cells plays a major role in this process, encouraging platelets to tether, roll and finally adhere at the site of damage. Dynamic platelet

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

• ); vascular endothelial growth factor (VEGF); Introduction Gene therapy is a promising strategy that can be employed in the treatment of many hereditary disorders as well as diseases triggered by sporadic mutations including many forms of cancer. However, the therapeutic potential of gene therapy is yet to

• . Detailed synthesis and characterization of the polymer was earlier reported by Prof Annenkov [21]. The lung cancer cell line A549 was procured from the National Centre for Cell Sciences (NCCS), Pune. Human umbilical vein endothelial cells (HUVECs) were procured from ATCC, USA. EGMTM endothelial cell growth

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

• , the role of caveolae in endocytosis is currently being debated. Some suggest that caveolae are involved in transcytosis in endothelial cells [100]. According to this hypothesis, caveolae rapidly detach from the apical side of the membrane and fuse with the basal one, or directly form transient pores

• in thin endothelial cells [101]. Other studies have shown that in many cell types caveolae are normally not involved in endocytosis, but are stable invaginations present at the cell surface [102][103], and only undergo endocytosis upon stimulation [96][104]. Apart from these mechanisms, phagocytosis

• to human endothelial HCMEC or epithelial HeLa cells [131]. In another study using carboxylated polystyrene nanoparticles of different sizes in different cell types, actin was required for the internalization of nanoparticles of 200 nm, but not for those of 40 nm in 1321N1 astrocytes. Instead, in lung

Rational design of block copolymer self-assemblies in photodynamic therapy

• Maxime Demazeau,
• Laure Gibot,
• Anne-Françoise Mingotaud,
• Patricia Vicendo,
• Clément Roux and
• Barbara Lonetti

Beilstein J. Nanotechnol. 2020, 11, 180–212, doi:10.3762/bjnano.11.15

• ) effect [2][3], constituted the triggering factor for the development of a whole new part of medicine, namely nanomedicine. Indeed, the observed spontaneous accumulation was explained by the existence of disjunctions between endothelial cells in the proximity of inflamed and cancerous tissues, which

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

• construction of a DNA origami-based nanorobot for the cargo delivery of payloads into cancer cells [56]. The autonomous DNA nanorobot was constructed using a nucleolin-binding DNA aptamer and was loaded with thrombin protease. The nucleolin protein was overexpressed in tumor-associated endothelial cells, which

Internalization mechanisms of cell-penetrating peptides

• Ivana Ruseska and
• Andreas Zimmer

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

Atomic force acoustic microscopy reveals the influence of substrate stiffness and topography on cell behavior

• Yan Liu,
• Li Li,
• Xing Chen,
• Ying Wang,
• Meng-Nan Liu,
• Jin Yan,
• Liang Cao,
• Lu Wang and
• Zuo-Bin Wang

Beilstein J. Nanotechnol. 2019, 10, 2329–2337, doi:10.3762/bjnano.10.223

• have been reported for other types of cells. Biela et al. reported that human fibroblast cells were most sensitive to groove patterns and acted as triggers for the alignment of endothelial and smooth muscle cells [38]. Furthermore, osteoblast cells were sensitive to a line pattern but not to any other

Gold-coated plant virus as computed tomography imaging contrast agent

• Alaa A. A. Aljabali,
• Mazhar S. Al Zoubi,
• Khalid M. Al-Batanyeh,
• Ali Al-Radaideh,
• Mohammad A. Obeid,
• Abeer Al Sharabi,
• Walhan Alshaer,
• Bayan AbuFares,
• Tasnim Al-Zanati,
• Murtaza M. Tambuwala,
• Naveed Akbar and
• David J. Evans

Beilstein J. Nanotechnol. 2019, 10, 1983–1993, doi:10.3762/bjnano.10.195

• of growth surface and were used between passages 2 and 3. Subculture occurred after 60–70% confluence after trypsinization (0.025% trypsin, 0.5 mM EDTA, 10 mM HEPES buffer pH 6.5). RAW264.7 cell labeling and confocal microscopy: Cells of a murine endothelial line (100 μL of 1 × 106 cells/mL, RAW264.7

Effects of gold and PCL- or PLLA-coated silica nanoparticles on brain endothelial cells and the blood–brain barrier

• Aniela Bittner,
• Angélique D. Ducray,
• Hans Rudolf Widmer,
• Michael H. Stoffel and
• Meike Mevissen

Beilstein J. Nanotechnol. 2019, 10, 941–954, doi:10.3762/bjnano.10.95

• are foreign objects, careful evaluation of their toxicological and functional aspects prior to medical application is imperative. In this study, we aimed to determine the effects of gold and polymer-coated silica nanoparticles used in laser tissue soldering on brain endothelial cells and the blood

• –brain barrier using rat brain capillary endothelial cells (rBCEC4). All types of nanoparticles were taken up time-dependently by the rBCEC4 cells, albeit to a different extent, causing a time- and concentration-dependent decrease in cell viability. Nanoparticle exposure did not change cell proliferation

• effects of various NPs on cells of the vasculature and the BBB need to be determined. The BBB is made of specialized endothelial cells (ECs), astrocytes and pericytes, forming a tight barrier, thus restricting access to the brain [14][15]. Disruption of this barrier allows potentially harmful molecules to

Targeting strategies for improving the efficacy of nanomedicine in oncology

• Gonzalo Villaverde and
• Alejandro Baeza

Beilstein J. Nanotechnol. 2019, 10, 168–181, doi:10.3762/bjnano.10.16

• to employ antibodies for the recognition of the tumoral blood vessels instead of the tumoral cells. Endoglin, or CD105, is a glycoprotein usually overexpressed on the surface of the endothelial cells which compose the tumoral vessels. TRC105 is a human/murine chimeric antibody which recognizes CD105

• effects: the EPR due to their size and active targeting provided by the glycoprotein gp60 interaction. The protein gp60 is overexpressed in the endothelial cell surface and allows the albumin-based systems to extravasate to the tumour mass through caveola formation and transcytosis. After this, albumin

• tissue accumulation and preferential glioma cells internalization. Mechanism of retention and accumulation of Abraxane in tumoral tissue. The authors’ own generalized depiction of the scheme proposed previously in [64]. Combination of unspecific CPP and endothelial specific ligands for tissue recognition

Characterization and influence of hydroxyapatite nanopowders on living cells

• Przemyslaw Oberbek,
• Tomasz Bolek,
• Adrian Chlanda,
• Seishiro Hirano,
• Sylwia Kusnieruk,
• Julia Rogowska-Tylman,
• Ganna Nechyporenko,
• Viktor Zinchenko,
• Wojciech Swieszkowski and
• Tomasz Puzyn

Beilstein J. Nanotechnol. 2018, 9, 3079–3094, doi:10.3762/bjnano.9.286

• significantly limits the insight of underlying mechanisms that affect living cells. There is a wide range of available cell lines to study possible organism reactions and cytotoxicity mechanisms, such as endothelial, neural, hepatic, phagocytic or cancer cells [26][27]. Still, systematic studies describing

Preparation of micro/nanopatterned gelatins crosslinked with genipin for biocompatible dental implants

• Reika Makita,
• Tsukasa Akasaka,
• Seiichi Tamagawa,
• Yasuhiro Yoshida,
• Saori Miyata,
• Hirofumi Miyaji and
• Tsutomu Sugaya

Beilstein J. Nanotechnol. 2018, 9, 1735–1754, doi:10.3762/bjnano.9.165

• [45]. These micro/nanopillars, with diameters of 1 µm or 250 nm, increased the proliferation of endothelial cells better than a planar gelatin surface. Zorlutuna et al. have reported that a collagen surface with a nanogroove could be fabricated by crosslinking with carbodiimide [37][46]. This

• several types of cells, the grooves with widths ranging from submicrometers to several tens of micrometers can effectively maneuver to align the cells [57][58]. However, Zorlutuna et al. have reported that human microvascular endothelial cells were not aligned in collagen grooves with widths of 333, 500

• [45][46]. In one study, the cell proliferation of corneal endothelial cells on GelMA pillars with a diameter of 250 nm or 1 µm was found to be increased compared to the planar GelMA surface [45]. Zorlutuna et al. have also shown that cell proliferation of vascular smooth muscle cells in collagen

BN/Ag hybrid nanomaterials with petal-like surfaces as catalysts and antibacterial agents

• Konstantin L. Firestein,
• Denis V. Leybo,
• Alexander E. Steinman,
• Andrey M. Kovalskii,
• Andrei T. Matveev,
• Anton M. Manakhov,
• Irina V. Sukhorukova,
• Pavel V. Slukin,
• Nadezda K. Fursova,
• Sergey G. Ignatov,
• Dmitri V. Golberg and
• Dmitry V. Shtansky

Beilstein J. Nanotechnol. 2018, 9, 250–261, doi:10.3762/bjnano.9.27

• may leave the blood vessels through fenestrations in the endothelial lining [38]. Recent studies have revealed that BN NPs are not toxic and can be additionally saturated with chemotherapeutic agents for multifunctional biological applications [39]. Therefore, our results open up new possibilities for

Liquid-crystalline nanoarchitectures for tissue engineering

• Baeckkyoung Sung and
• Min-Ho Kim

Beilstein J. Nanotechnol. 2018, 9, 205–215, doi:10.3762/bjnano.9.22

• potential along the bundle gel. Collagen-based helical nanofibrillar scaffolds have shown the ability to support the growth of human endothelial cells [104]. The nanofibrils were generated by applying shear stress on a collagen solution in a (chiral) nematic phase. When the cells were seeded in a 3D

Involvement of two uptake mechanisms of gold and iron oxide nanoparticles in a co-exposure scenario using mouse macrophages

• Dimitri Vanhecke,
• Dagmar A. Kuhn,
• Dorleta Jimenez de Aberasturi,
• Sandor Balog,
• Ana Milosevic,
• Dominic Urban,
• Diana Peckys,
• Niels de Jonge,
• Wolfgang J. Parak,
• Alke Petri-Fink and
• Barbara Rothen-Rutishauser

Beilstein J. Nanotechnol. 2017, 8, 2396–2409, doi:10.3762/bjnano.8.239

• microvascular endothelial cells via flotillin-mediated uptake [18]. Flotillin-mediated uptake was also observed for silica NPs in lung epithelial and endothelial cells [19]. The various uptake pathways have one aspect in common: The internalized NP is ultimately located in an intracellular vesicle. Endocytosis

Cationic PEGylated polycaprolactone nanoparticles carrying post-operation docetaxel for glioma treatment

• Cem Varan and
• Erem Bilensoy

Beilstein J. Nanotechnol. 2017, 8, 1446–1456, doi:10.3762/bjnano.8.144

• affect cellular uptake, interaction with biological membranes, absorption rate, biodistribution in the body, as well as the physical stability of the nanoparticles [50]. It is known that nanoparticles can escape from systemic circulation via fenestrations, which are small openings through the endothelial

Low uptake of silica nanoparticles in Caco-2 intestinal epithelial barriers

• Dong Ye,
• Mattia Bramini,
• Delyan R. Hristov,
• Sha Wan,
• Anna Salvati,
• Christoffer Åberg and
• Kenneth A. Dawson

Beilstein J. Nanotechnol. 2017, 8, 1396–1406, doi:10.3762/bjnano.8.141

• type of barrier, namely an in vitro model of the human endothelial blood brain barrier [14][15][51][52]. Thus, the low degree of uptake observed in the Caco-2 barrier may be a characteristic of this type of barrier and could be related to the more complex polarised nature of thicker epithelial layers

Micro- and nano-surface structures based on vapor-deposited polymers

• Hsien-Yeh Chen

Beilstein J. Nanotechnol. 2017, 8, 1366–1374, doi:10.3762/bjnano.8.138

• –Arg–Glu–Asp–Val (CREDV) peptide showed the synergic anti-fouling property and preferentially enhanced attachment of endothelial cells in such patterned areas [50]. In another report, a multifunctional coating was realized via CVD copolymerization to deposit a poly(p-xylylene) copolymer, which