Did Mineral Surface Chemistry and Toxicity Contribute to Evolution of Microbial Extracellular Polymeric Substances?

Xu, Jie; Campbell, Jay M.; Zhang, Nianli; Hickey, William J.; Sahai, Nita

doi:10.1089/ast.2011.0776

Cited by 28 publications

(11 citation statements)

References 54 publications

(53 reference statements)

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“…DA and DA/DOH adsorb on both negatively-charged and positively-charged mineral surfaces, because adsorption is controlled by a combination of van der Waals, H-bonding and electrostatic forces. Similar correlations have been identified previously for phospholipid membrane stability at oxide surfaces and for cytotoxicity of oxide nanoparticles on bacterial cell surfaces 19 20 21 22 23 . In detail, by using a combination of adsorption isotherms, fluorescent dye (calcein) leakage rate experiments, atomic force microscopy, neutron reflectivity and transmission electron microscopy, it was shown that dipalmitoylphosphocholine (DPPC) and ditridecanoylphosphocholine (DTPC) adsorb by forming incomplete multi-layer islands on the surfaces of quartz, rutile, mica and corundum (α-Al 2 O 3 ) 19 20 21 22 .…”

Section: Resultssupporting

confidence: 84%

“…On the other hand, the stability and formation kinetics of phospholipid bilayer membranes as well as the adhesion of prokaryotic and eukaryotic cells to oxide and aluminosilicate (muscovite mica) mineral surfaces is known to depend on the surface charge of minerals 18 19 20 21 22 23 . Surface charge depends on the isoelectric point (IEP) of the mineral.…”

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confidence: 99%

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Mineral Surface Chemistry and Nanoparticle-aggregation Control Membrane Self-Assembly

Sahai

Kaddour

Dalai

et al. 2017

Sci Rep

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The self-assembly of lipid bilayer membranes to enclose functional biomolecules, thus defining a “protocell,” was a seminal moment in the emergence of life on Earth and likely occurred at the micro-environment of the mineral-water interface. Mineral-lipid interactions are also relevant in biomedical, industrial and technological processes. Yet, no structure-activity relationships (SARs) have been identified to predict lipid self-assembly at mineral surfaces. Here we examined the influence of minerals on the self-assembly and survival of vesicles composed of single chain amphiphiles as model protocell membranes. The apparent critical vesicle concentration (CVC) increased in the presence of positively-charged nanoparticulate minerals at high loadings (mg/mL) suggesting unfavorable membrane self-assembly in such situations. Above the CVC, initial vesicle formation rates were faster in the presence of minerals. Rates were correlated with the mineral’s isoelectric point (IEP) and reactive surface area. The IEP depends on the crystal structure, chemical composition and surface hydration. Thus, membrane self-assembly showed rational dependence on fundamental mineral properties. Once formed, membrane permeability (integrity) was unaffected by minerals. Suggesting that, protocells could have survived on rock surfaces. These SARs may help predict the formation and survival of protocell membranes on early Earth and other rocky planets, and amphiphile-mineral interactions in diverse other phenomena.

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Section: Resultssupporting

confidence: 84%

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confidence: 99%

Mineral Surface Chemistry and Nanoparticle-aggregation Control Membrane Self-Assembly

Sahai

Kaddour

Dalai

et al. 2017

Sci Rep

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“…As a result, nanomaterials are intertwined with all space and time components of the Earth system (4). Important examples of this include the likely role of nanomineral surfaces in influencing the polymerization and selfassembly of the molecular building blocks of life and promoting the self-assembly of protocells in the origin of life and in the early evolution of bacterial cell walls (5)(6)(7)(8); iron fertilization of the oceans by dissolution of natural iron oxyhydroxide nanominerals, which influences primary pro-ductivity and thus global temperature and the carbon cycle (9-11); and the global occurrence of nanoplastics in biota and other natural environments (12).…”

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confidence: 99%

Natural, incidental, and engineered nanomaterials and their impacts on the Earth system

Hochella

Mogk

Ranville

et al. 2019

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Nanomaterials are critical components in the Earth system’s past, present, and future characteristics and behavior. They have been present since Earth’s origin in great abundance. Life, from the earliest cells to modern humans, has evolved in intimate association with naturally occurring nanomaterials. This synergy began to shift considerably with human industrialization. Particularly since the Industrial Revolution some two-and-a-half centuries ago, incidental nanomaterials (produced unintentionally by human activity) have been continuously produced and distributed worldwide. In some areas, they now rival the amount of naturally occurring nanomaterials. In the past half-century, engineered nanomaterials have been produced in very small amounts relative to the other two types of nanomaterials, but still in large enough quantities to make them a consequential component of the planet. All nanomaterials, regardless of their origin, have distinct chemical and physical properties throughout their size range, clearly setting them apart from their macroscopic equivalents and necessitating careful study. Following major advances in experimental, computational, analytical, and field approaches, it is becoming possible to better assess and understand all types and origins of nanomaterials in the Earth system. It is also now possible to frame their immediate and long-term impact on environmental and human health at local, regional, and global scales.

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“…In the laboratory, this phenomenon is demonstrated with organisms with short generation times. For example, exposure of multiple generations of the microbe Pseudomonas aeruginosa to natural minerals of silica, anatase TiO 2 or alumina informs on a resilience to the minerals arising from adaptation of the genes controlling the extracellular polymeric substances that are secreted as a protective barrier by the organism [242]. The evolution of resistance to engineered NPs has also been recently demonstrated in the microbe, E. coli exposed to silver NPs [243].…”

Section: Main Textmentioning

confidence: 99%

Particle toxicology and health - where are we?

Riediker¹,

et al. 2019

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Background Particles and fibres affect human health as a function of their properties such as chemical composition, size and shape but also depending on complex interactions in an organism that occur at various levels between particle uptake and target organ responses. While particulate pollution is one of the leading contributors to the global burden of disease, particles are also increasingly used for medical purposes. Over the past decades we have gained considerable experience in how particle properties and particle-bio interactions are linked to human health. This insight is useful for improved risk management in the case of unwanted health effects but also for developing novel medical therapies. The concepts that help us better understand particles’ and fibres’ risks include the fate of particles in the body; exposure, dosimetry and dose-metrics and the 5 Bs: bioavailability, biopersistence, bioprocessing, biomodification and bioclearance of (nano)particles. This includes the role of the biomolecule corona, immunity and systemic responses, non-specific effects in the lungs and other body parts, particle effects and the developing body, and the link from the natural environment to human health. The importance of these different concepts for the human health risk depends not only on the properties of the particles and fibres, but is also strongly influenced by production, use and disposal scenarios. Conclusions Lessons learned from the past can prove helpful for the future of the field, notably for understanding novel particles and fibres and for defining appropriate risk management and governance approaches.

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Did Mineral Surface Chemistry and Toxicity Contribute to Evolution of Microbial Extracellular Polymeric Substances?

Cited by 28 publications

References 54 publications

Mineral Surface Chemistry and Nanoparticle-aggregation Control Membrane Self-Assembly

Mineral Surface Chemistry and Nanoparticle-aggregation Control Membrane Self-Assembly

Natural, incidental, and engineered nanomaterials and their impacts on the Earth system

Particle toxicology and health - where are we?

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