PMID- 37852624 OWN - NLM STAT- MEDLINE DCOM- 20240214 LR - 20240214 IS - 1600-0536 (Electronic) IS - 0105-1873 (Linking) VI - 90 IP - 3 DP - 2024 Mar TI - The BMDC model, a performant cell-based test to assess the sensitizing potential and potency of chemicals including pre/pro-haptens. PG - 211-234 LID - 10.1111/cod.14439 [doi] AB - BACKGROUND: Chemical-induced allergies at workplace represent a significant occupational health issue. These substances must be properly identified as sensitizers. In previous studies, an original model using mouse bone marrow-derived dendritic cells (BMDC) was developed for this purpose. OBJECTIVES: The aim of this study was to evaluate the predictive capacity of the BMDC model with a large panel of sensitizers (including pre- and pro-haptens) and non-sensitizers. METHODS: The readout from the BMDC model is based on expression levels of six phenotypic markers measured by flow cytometry. RESULTS: The results indicate that 29 of the 37 non-sensitizers, and 81 of the 86 sensitizers were correctly classified compared to the Local Lymph Node Assay (LLNA). Statistical analysis revealed the BMDC model to have a sensitivity of 94%, a specificity of 78%, and an accuracy of 89%. The EC2 (Effective Concentration) values calculated with this model allow sensitizers to be categorized into four classes: extreme, strong, moderate and weak. CONCLUSIONS: These excellent predictive performances show that the BMDC model discriminates between sensitizers and non-sensitizers with outstanding precision equal to or better than existing validated alternative models. Moreover, this model allows to predict sensitization potency of chemicals. The BMDC test could therefore be proposed as an additional tool to assess the sensitizing potential and potency of chemicals. CI - (c) 2023 The Authors. Contact Dermatitis published by John Wiley & Sons Ltd. FAU - Battais, Fabrice AU - Battais F AUID- ORCID: 0000-0002-1393-1686 AD - French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre les Nancy, France. FAU - Langonne, Isabelle AU - Langonne I AD - French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre les Nancy, France. FAU - Muller, Samuel AU - Muller S AD - French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre les Nancy, France. FAU - Mathiot, Julianne AU - Mathiot J AD - French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre les Nancy, France. FAU - Coiscaud, Amelie AU - Coiscaud A AD - French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre les Nancy, France. FAU - Audry, Adrien AU - Audry A AD - French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre les Nancy, France. FAU - Remy, Aurelie Martin AU - Remy AM AD - French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre les Nancy, France. FAU - Sponne, Isabelle AU - Sponne I AD - French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre les Nancy, France. FAU - Mourot-Bousquenaud, Melanie AU - Mourot-Bousquenaud M AUID- ORCID: 0000-0003-0556-0798 AD - French Research and Safety Institute for the Prevention of Occupational Accidents and Diseases (INRS), Toxicology and Biomonitoring Division, Vandoeuvre les Nancy, France. LA - eng PT - Journal Article DEP - 20231018 PL - England TA - Contact Dermatitis JT - Contact dermatitis JID - 7604950 RN - 0 (Haptens) RN - 0 (Allergens) SB - IM MH - Mice MH - Animals MH - *Dermatitis, Allergic Contact/diagnosis/etiology MH - Haptens MH - Local Lymph Node Assay MH - Flow Cytometry MH - Allergens/adverse effects OTO - NOTNLM OT - bone marrow-derived dendritic cells OT - chemical allergens OT - in vitro assay OT - potency OT - sensitization EDAT- 2023/10/19 00:44 MHDA- 2024/02/12 18:42 CRDT- 2023/10/18 20:22 PHST- 2023/09/07 00:00 [revised] PHST- 2023/06/02 00:00 [received] PHST- 2023/10/01 00:00 [accepted] PHST- 2024/02/12 18:42 [medline] PHST- 2023/10/19 00:44 [pubmed] PHST- 2023/10/18 20:22 [entrez] AID - 10.1111/cod.14439 [doi] PST - ppublish SO - Contact Dermatitis. 2024 Mar;90(3):211-234. doi: 10.1111/cod.14439. Epub 2023 Oct 18.