PMID- 38507005 OWN - NLM STAT- MEDLINE DCOM- 20240322 LR - 20240322 IS - 1940-6029 (Electronic) IS - 1064-3745 (Linking) VI - 2789 DP - 2024 TI - In Vitro and In Vivo Methods for Analysis of Nanoparticles' Potential to Induce Delayed-Type Hypersensitivity Reactions. PG - 193-207 LID - 10.1007/978-1-0716-3786-9_20 [doi] AB - Delayed-type hypersensitivity (DTH) reactions are among the common reasons for drug withdrawal from clinical use during the post-marketing stage. Several in vivo methods have been developed to test DTH responses in animal models. They include the local lymph node assay (LLNA) and local lymph node proliferation assay (LLNP). While LLNA is instrumental in testing topically administered formulations (e.g., creams), the LLNP was proven to be predictive of drug-mediated DTH in response to small molecule pharmaceuticals. Global efforts in reducing the use of research animals lead to the development of in vitro models to predict test-materials' mediated DTH. Two such models include the analysis of surface marker expression in human cell lines THP-1 and U-937. These tests are known as the human cell line activation test (hCLAT) and myeloid U937 skin sensitization test (MUSST or U-SENS), respectively. Here we describe experimental procedures for all these methods, discuss their in vitro-in vivo correlation, and suggest a strategy for applying these tests to analyze engineered nanomaterials and nanotechnology-formulated drug products. CI - (c) 2024. The Author(s), under exclusive license to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Potter, Timothy M AU - Potter TM AD - Nanotechnology Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD, USA. FAU - Neun, Barry W AU - Neun BW AD - Nanotechnology Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD, USA. FAU - Dobrovolskaia, Marina A AU - Dobrovolskaia MA AD - Nanotechnology Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD, USA. marina@mail.nih.gov. LA - eng PT - Journal Article PL - United States TA - Methods Mol Biol JT - Methods in molecular biology (Clifton, N.J.) JID - 9214969 RN - 0 (Allergens) SB - IM MH - Animals MH - Humans MH - Skin Tests/methods MH - *Local Lymph Node Assay MH - Allergens MH - Cell Line MH - *Nanoparticles/toxicity OTO - NOTNLM OT - Allergen OT - Hypersensitivity OT - Irritant OT - LLNA OT - LLNP OT - Leukocyte proliferation OT - MUSST OT - Nanoparticles OT - Sensitizer OT - hCLAT EDAT- 2024/03/20 18:46 MHDA- 2024/03/22 06:44 CRDT- 2024/03/20 12:07 PHST- 2024/03/22 06:44 [medline] PHST- 2024/03/20 18:46 [pubmed] PHST- 2024/03/20 12:07 [entrez] AID - 10.1007/978-1-0716-3786-9_20 [doi] PST - ppublish SO - Methods Mol Biol. 2024;2789:193-207. doi: 10.1007/978-1-0716-3786-9_20.