Tag: toxicity

Prof. Stephen Sturzenbaum will give an ICMAB Lecture on toxicity of metals on biological systems

It is a pleasure for us to invite you to the ICMAB Lecture entitled: “Juggling essential and toxic metals – a worm’s eye view of a Toxicogenomic challenge”

By Prof. Stephen Sturzenbaum from the group of Toxicogenomics from King’s College London (UK).

Date: Friday, January 20th
Time: 12.00 pm
Place: ICMAB – Sala d’actes Carles Miravitlles

Abstract: Some metals are exclusively toxic to biological systems and classified as being non-essential, others are essential for life. Nevertheless, above certain threshold concentrations all (including the essential ones) become toxic. Homeostasis of essential elements and detoxification of non-essential elements are thus vital drivers of well-being, longevity and survival. By exploiting genomic, transcriptomic and toxicological tools within the model nematode C. elegans we identified and characterized intricate pathways that not only form the foundations of metallomics but facilitate further explorations within the field of nanomaterials.

Short bio: Professor Stephen Sturzenbaum holds a personal chair in Toxicogenomics at King’s College London and was recently awarded a Senior Doctorate (DSc) from Cardiff University for his work on “Toxicogenomics on Terrestrial Worms”. Stephen pioneered the use of molecular genetic tools in the common earthworm, and in doing so was instrumental in establishing the earthworm as a sentinel soil macroinvertebrate model organism of environmental importance. Stephen’s second stream of work has focussed on promoting the use of the more established C. elegans model organism to address the burgeoning themes of metallobiology, toxicogenomics and nanoparticle toxicology. Laura González, from our group, who did her thesis on evaluating nanoparticles’ toxicity on C. elegans, did an internship at his laboratory during Feb-May 2016

If you would like to arrange a meeting with Prof. Stephen Stürzenbaum please contact: Dr. Anna Laromaine (alaromaine@icmab.es)

Laura González will defend her Doctoral Thesis on Friday, December 16th at 12 pm at ICMAB

This Friday 16th of December Laura González is going to defend her Doctoral Thesis entitled “Evaluating inorganic nanoparticles in the living organism Caenorhabditis elegans”, supervised by Dr. Anna Laromaine and Dr. Anna Roig

Abstract:
In this thesis, we have used the simple model organism Caenorhabditis elegans as an in vivo biological system to screen inorganic nanoparticles (NPs) with biomedical uses. In particular, we have assessed the behaviour of two types of particles with different composition, size and surface properties: iron oxide NPs coated with citrate and bovine serum albumin, and gold nanoparticles of two different sizes. We have studied their interactions with C. elegans including their uptake, fate, biological effects and NP-responsive molecular mechanisms, and compared our results with previous studies. To this end, we have combined toxicity tests, materials science and imaging techniques and gene expression analysis. We have been able to perform this biological evaluation in the synthetic laboratory where the particles were synthesized and characterised due to the advantageous experiments features of C. elegans.In summary, this thesis exploits the potential of C. elegans as a simple animal model to evaluate NPs in the initial stages of development and contributes to: (i) a systematic and comprehensive evaluation of NPs in C. elegans, in particular studying the influence of NP properties (size, surface coating and core composition) on their in vivo effects, (ii) extend the toolkit of techniques available to characterise nano-bio interactions in small organisms.

The Jury Members will be:

Everyone is invited to join the presentation, that will be held at 12 pm at ICMAB Conference Room Carles Miravitlles. After the defense, there will be a “pica-pica” for everyone in the dining room.