Article (Scientific journals)
Skin sensitization quantitative QSAR models based on mechanistic structural alerts.
Chayawan; Selvestrel, Gianluca; Baderna, Diego et al.
2022In Toxicology, 468, p. 153111
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Keywords :
Allergic contact dermatitis; Local lymph node assay; QSAR models; Reactivity domains; Skin sensitization; Allergens; Allergens/analysis; Allergens/toxicity; Dermatitis, Allergic Contact/diagnosis; Humans; Linear Models; Quantitative Structure-Activity Relationship; Skin/drug effects; Dermatitis, Allergic Contact; Skin; Toxicology
Abstract :
[en] Allergic contact dermatitis is increasingly of interest for the hazard characterization of chemicals. in vivo animal testing is usually adopted but in silico approaches are becoming the new frontier due to their swiftness and economic efficiency. Indeed, in silico models can rationalise the experimental outcomes besides having predictive ability. The aim of the present work was to explore the electrophilic chemical behaviour responsible for allergic contact dermatitis using quantitative QSAR regression models. Eight models were proposed, using an experimental LLNA dataset of 366 chemicals. Each model is unique to encode a type of electrophilic reactivity domain. The models were obtained using autocorrelation, electro-topological and atom centered fragment based on two-dimensional descriptors, which incorporated the electronic and stereochemical features of substances interacting with skin proteins to induce skin cell proliferation. Finally, simple steps were proposed to integrate the eight models for the application on the test chemicals.
Disciplines :
Chemistry
Author, co-author :
Chayawan;  Laboratory of Environmental Chemistry and Toxicology, Environmental Health Department, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy
Selvestrel, Gianluca;  Laboratory of Environmental Chemistry and Toxicology, Environmental Health Department, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy. Electronic address: gianluca.selvestrel@marionegri.it
Baderna, Diego;  Laboratory of Environmental Chemistry and Toxicology, Environmental Health Department, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy
Toma, Cosimo;  Laboratory of Environmental Chemistry and Toxicology, Environmental Health Department, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy
Caballero Alfonso, Ana Yisel;  Laboratory of Environmental Chemistry and Toxicology, Environmental Health Department, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy
Gamba, Alessio  ;  Université de Liège - ULiège > GIGA > GIGA In silico medecine - Biomechanics Research Unit ; Laboratory of Environmental Chemistry and Toxicology, Environmental Health Department, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy
Benfenati, Emilio;  Laboratory of Environmental Chemistry and Toxicology, Environmental Health Department, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milano, Italy
Language :
English
Title :
Skin sensitization quantitative QSAR models based on mechanistic structural alerts.
Publication date :
January 2022
Journal title :
Toxicology
ISSN :
0300-483X
eISSN :
1879-3185
Publisher :
Elsevier Ireland Ltd, Ireland
Volume :
468
Pages :
153111
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
The authors are grateful for the contribution of the project European LIFE VERMEER (LIFE16 ENV/IT/000167) for financial support. The authors would like to thank Chemaxon ( http://www.chemaxon.com ) for the academic license of the Marvin suite used to display and characterize chemical structures. The authors are grateful to Prof. P. Gramatica for providing QSARINS software. The authors would like to thank Prof. Kunal Roy for access to tools available at https://dtclab.webs.com/software-tools and are thankful to Prof. M.T.D. Cronin for providing the SMARTS strings used in the present work.
Available on ORBi :
since 14 October 2022

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