Definitive evidence for Club cells as progenitors for mutantKras/Trp53‐deficient lung cancer
| Autor: | Thomas Kindler, Sebastian Boegel, Sebastian Rosigkeit, Marie Kruchem, Ernesto Bockamp, Patricia Haehnel, Udo F. Hartwig, Geethanjali Pickert, Sandrine Jansky, Mariano Barbacid, Detlef Schuppan, Dorothe Thies, Carmen Guerra, Andreas Kreft, Leonard Kaps, Emma Eichler, Dominik Siegl |
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| Rok vydání: | 2021 |
| Předmět: |
Cancer Research
Lung Neoplasms Lineage (genetic) Tumor suppressor gene Cell of origin Adenocarcinoma Biology medicine.disease_cause Mice medicine Animals Humans Progenitor cell Lung cancer Lung Mice Knockout Cancer Epithelial Cells medicine.disease Gene Expression Regulation Neoplastic Mice Inbred C57BL Cell Transformation Neoplastic Genes ras medicine.anatomical_structure Oncology Mutation Disease Progression Cancer research KRAS Tumor Suppressor Protein p53 |
| Zdroj: | International Journal of Cancer. 149:1670-1682 |
| ISSN: | 1097-0215 0020-7136 |
| DOI: | 10.1002/ijc.33756 |
| Popis: | Accumulating evidence suggests that both the nature of oncogenic lesions and the cell-of-origin can strongly influence cancer histopathology, tumor aggressiveness and response to therapy. Although oncogenic Kras expression and loss of Trp53 tumor suppressor gene function have been demonstrated to initiate murine lung adenocarcinomas (LUADs) in alveolar type II (AT2) cells, clear evidence that Club cells, representing the second major subset of lung epithelial cells, can also act as cells-of-origin for LUAD is lacking. Equally, the exact anatomic location of Club cells that are susceptible to Kras transformation and the resulting tumor histotype remains to be established. Here, we provide definitive evidence for Club cells as progenitors for LUAD. Using in vivo lineage tracing, we find that a subset of Kras12V -expressing and Trp53-deficient Club cells act as precursors for LUAD and we define the stepwise trajectory of Club cell-initiated tumors leading to lineage marker conversion and aggressive LUAD. Our results establish Club cells as cells-of-origin for LUAD and demonstrate that Club cell-initiated tumors have the potential to develop aggressive LUAD. |
| Databáze: | OpenAIRE |
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