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Improved Biocompatibility of Amino‐Functionalized Graphene Oxide in Caenorhabditis elegans
Author(s) -
Rive Corvin,
Reina Giacomo,
Wagle Prerana,
Treossi Emanuele,
Palermo Vincenzo,
Bianco Alberto,
Delogu Lucia Gemma,
Rieckher Matthias,
Schumacher Björn
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201902699
Subject(s) - innate immune system , caenorhabditis elegans , biocompatibility , biology , immune system , immunity , microbiology and biotechnology , immunology , materials science , gene , biochemistry , metallurgy
Graphene oxide (GO) holds high promise for diagnostic and therapeutic applications in nanomedicine but reportedly displays immunotoxicity, underlining the need for developing functionalized GO with improved biocompatibility. This study describes adverse effects of GO and amino‐functionalized GO (GONH 2 ) during Caenorhabditis elegans development and ageing upon acute or chronic exposure. Chronic GO treatment throughout the C. elegans development causes decreased fecundity and a reduction of animal size, while acute treatment does not lead to any measurable physiological decline. However, RNA‐Sequencing data reveal that acute GO exposure induces innate immune gene expression. The p38 MAP kinase, PMK‐1, which is a well‐established master regulator of innate immunity, protects C. elegans from chronic GO toxicity, as pmk‐1 mutants show reduced tissue‐functionality and facultative vivipary. In a direct comparison, GONH 2 exposure does not cause detrimental effects in the wild type or in pmk‐1 mutants, and the innate immune response is considerably less pronounced. This work establishes enhanced biocompatibility of amino‐functionalized GO in a whole‐organism, emphasizing its potential as a biomedical nanomaterial.