Bio‐nano interface and environment: A critical review

Abstract

The bio-nano interface is the boundary where engineered nanomaterials (ENMs) meet the biological system, exerting the biological function for which they have been designed or inducing adverse effects on other cells or organisms when they reach nontarget scenarios (i.e., the natural environment). Research has been performed to determine the fate, transport, and toxic properties of ENMs, but much of it is focused on pristine or so-called as-manufactured ENMs, or else modifications of the materials were not assessed. We review the most recent progress regarding the bio-nano interface and the transformations that ENMs undergo in the environment, paying special attention to the adsorption of environmental biomolecules on the surface of ENMs. Whereas the protein corona has received considerable attention in the fields of biomedics and human toxicology, its environmental analogue (the eco-corona) has been much less studied. A section dedicated to the analytical methods for studying and characterizing the eco-corona is also presented. We conclude by presenting and discussing the key problems and knowledge gaps that need to be resolved in the near future regarding the bio-nano interface and the eco-corona. Environ Toxicol Chem 2017;36:3181-3193. # 2017 SETAC

Influence of nanoplastic surface charge on eco-corona formation, aggregation and toxicity to freshwater zooplankton

“…In the presence of NOM (data not shown), the amount of the accumulated amidine and carboxyl PS particles decreased significantly and in agreements with the results of the acute toxicity tests. Indeed an eco-corona represents what the organism sees (Pulido-Reyes et al, 2017) and plays a central role in modulation of the nano-and micro-particle biological reactivity and the responses in living organisms.…”

“…The formed eco-corona thus modulated their bioreactivity and potential impacts (Pulido-Reyes et al, 2017). However, the consequences of the eco-corona on the possible toxicological consequences of nano-and microplastics exposure are not studied systematically.…”

Biofilm formation by marine bacteria is impacted by concentration and surface functionalization of polystyrene nanoparticles in a species‐specific manner

“…In broth, no significant difference between the zeta potentials of ANPs and CNPs was observed, with all nanoparticles falling between −4.9 and −9.9 mV. This supports the possibility of constituents of the broth adsorbing to the nanoparticle surface, forming a corona, and thereby influencing the surface charge (Fatisson et al ., ; Pulido‐Reyes et al ., ).…”

Dendrimer‐Based Gold Nanostructures for SERS Detection of Pesticides in Water

“…However, in a number of such applications, long term colloidal stability is an essential requirement to fully exploit size dependent and surface properties of metal nanoparticles that exhibit plasmonic behavior. As such, several strategies have been implemented that include the use of polymers, surfactants and chelating agents to protect the nanoparticles' surfaces and thereby to confer colloidal stability under variable chemical conditions . In this context, dendrimers have also been explored as templating and stabilizing agents for a wide variety of metal nanoparticles , , .…”

“…As such, several strategies have been implemented that include the use of polymers, surfactants and chelating agents to protect the nanoparticles' surfaces and thereby to confer colloidal stability under variable chemical conditions. [7][8][9] In this context, dendrimers have also been explored as templating and stabilizing agents for a wide variety of metal nanoparticles. [1,3,[10][11][12] The polyamido(amine) (PAMAM) dendrimer belong to the class of dendrimers that have been extensively used for the preparation of metal nano-of these SERS platforms for the detection of water trace pollutants, was explored through the analysis of selected pesticides.…”