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Slide 011

Slide ID: 011
Collection of murine pulmonary tumors - Slide 011
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Submitting Investigator: Anton Berns/Ralph Meuwissen
Mouse Age: 7 months
Mouse Sex: Male
Mouse Strain: FVB
Genotype: p53flox/flox Rbflox/flox
Genetic Modification Details: Homozygous conditional knockout alleles for both p53 and Rb. Both genes become full null alleles upon Cre mediated recombination
Other Factors: Mouse has been intratracheally infected with AdCre and sacrificed at 28 weeks post infection
Gross Morphology: Lung did contain macroscopic tumor lesions
Method of Fixation: Formalin
Annotations: Neuroendocrine carcinoma
Large tumor mass with necrosis substitutes most of the lung parenchyma. The neoplastic cells are small to medium size, with scant cytoplasm, and granular nuclear chromatin. Cells are densely packed and arranged in nesting pattern. Mitoses are frequent. Metastasis in the regional lymph nodes.
References:
Meuwissen, R., Linn, S. C., Linnoila, R. I., Zevenhoven, J., Mooi, W. J., and Berns, A. Induction of small cell lung cancer by somatic inactivation of both Trp53 and Rb1 in a conditional mouse model. Cancer Cell, 4: 181-189, 2003.