Precision Cut Lung Slices as a Preclinical Model for Non-Small Cell Lung Cancer Chemoprevention.

Autor:	Sompel K; School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado., Smith AJ; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas., Hauer C; Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado., Elango AP; Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado., Clamby ET; Department of Anesthesiology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado., Keith RL; Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado.; Rocky Mountain Regional VA Medical Center, Aurora, Colorado., Tennis MA; Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado.
Jazyk:	angličtina
Zdroj:	Cancer prevention research (Philadelphia, Pa.) [Cancer Prev Res (Phila)] 2023 May 01; Vol. 16 (5), pp. 247-258.
DOI:	10.1158/1940-6207.CAPR-23-0004
Abstrakt:	Lung cancer chemoprevention is critical to addressing cancer burden in high-risk populations. Chemoprevention clinical trials rely on data from preclinical models; however, in vivo studies have high financial, technical, and staffing requirements. Precision cut lung slices (PCLS) provide an ex vivo model that maintains the structure and function of native tissues. This model can be used for mechanistic investigations and drug screenings and reduces the number of animals and time required to test hypotheses compared with in vivo studies. We tested the use of PCLS for chemoprevention studies, demonstrating recapitulation of in vivo models. Treatment of PCLS with the PPARγ agonizing chemoprevention agent iloprost produced similar effects on gene expression and downstream signaling as in vivo models. This occurred in both wild-type tissue and Frizzled 9 knockout tissue, a transmembrane receptor required for iloprost's preventive activity. We explored new areas of iloprost mechanisms by measuring immune and inflammation markers in PCLS tissue and media, and immune cell presence with immunofluorescence. To demonstrate the potential for drug screening, we treated PCLS with additional lung cancer chemoprevention agents and confirmed activity markers in culture. PCLS offers an intermediate step for chemoprevention research between in vitro and in vivo models that can facilitate drug screening prior to in vivo studies and support mechanistic studies with more relevant tissue environments and functions than in vitro models. Prevention Relevance: PCLS could be a new model for premalignancy and chemoprevention research, and this work evaluates the model with tissue from prevention-relevant genetic and carcinogen exposed in vivo mouse models, in addition to evaluating chemoprevention agents. (©2023 American Association for Cancer Research.)
Databáze:	MEDLINE
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