Journal: bioRxiv
Article Title: Basal cell of origin resolves neuroendocrine–tuft lineage plasticity in cancer
doi: 10.1101/2024.11.13.623500
Figure Lengend Snippet: (a) Recombination PCR for RPM basal organoids for indicated alleles pre- and post-treatment with TAT-Cre recombinase or Ad-CMV-Cre at two concentrations (2.5e7 or 5e7 pfu). *Organoids subject to spinoculation with CMV-Cre virus. Red font indicates condition used for subsequent allografting. (b) Co-IF on basal organoids pre-treatment with Cre (No Cre) or following recombination (RPM, RPR2, RPMA) for DAPI (nuclei, blue), KI67 (proliferation, orange), and ASCL1 (NE cell, green). Positive controls for KI67 and ASCL1 (bottom panel) is an RPR2 SCLC lung tumour. Quantification via CellProfiler of KI67 positivity per organoid from indicated conditions (right). Number of organoids quantified per group is labeled. One-way ANOVA with Tukey’s correction. *** p<0.003, ** p<0.005, ns=not significant, p>0.05. Error bars represent mean ± SD. (c) Co-IF on basal organoids pre-treatment with Cre (No Cre) or following recombination (RPM, RPR2, RPMA): Left) DAPI (nuclei, blue), NEUROD1 (neuronal cell, green), DNP63 (basal cell, yellow) and KRT8 (luminal basal cell, red). Positive control (+) for NEUROD1 is an RPM olfactory neuroblastoma tumour and for basal markers is an SNL GEMM lung tumour . Right) DAPI (nuclei, blue), FOXJ1 (ciliated cell, purple), CCSP (SCGB1A1, club cell, green) and KRT8 (luminal basal cell, red). Positive control (+) control for FOXJ1 and CCSP is airway from a normal mouse lung, and for KRT8 is an SNL GEMM lung tumour. (d) Co-IF on basal organoids pre-treatment with Cre (No Cre) or following recombination (RPM, RPR2, RPMA) for DAPI (nuclei, blue) and POU2F3 (tuft cell, green). Positive control (+) is an RPMA olfactory neuroblastoma tumour . All co-IF scale bars=150 μm.
Article Snippet: Primary antibodies included: anti-mouse ASCL1 (BD Pharmingen cat#556604) 1:25; anti-rabbit ASCL1 (Abcam cat#211327) 1:100; anti-goat NEUROD1 (R&D Systems cat# AF2746) 1:50; anti-rabbit NEUROD1 (Abcam cat#109224) 1:200; POU2F3 (Sigma cat# HPA019652) 1:100; anti-rabbit CCSP/SCGB1A1 (Millipore Sigma cat#07-623) 1:75; anti-rat KRT8 (DSHB cat# TROMA-I) 1:100; anti-mouse FOXJ1 (eBioscience cat#14-9965-80) 1:100; anti-mouse KI67 (BD Pharmingen cat# BDB556003) 1:100; anti-goat DNP63 (R&D cat# AF1916) 1:40.
Techniques: Virus, Labeling, Positive Control, Control