Transcriptomic validation of a 7,12 Dimethylbenz(a)anthracene (DMBA)-induced leukemia rat model: Parallels with human...

Area of Science:

• Hematology
• Oncology
• Molecular Biology

Background:

• Experimental animal models are crucial for leukemia research.
• 7,12-dimethylbenz[a]anthracene (DMBA) induces leukemia in rodents, but its molecular similarity to human disease needs further investigation.
• Evaluating the transcriptomic landscape of DMBA-induced leukemia in rats is key to assessing its translational validity.

Purpose of the Study:

• To assess the transcriptomic landscape of a DMBA-induced rat leukemia model.
• To determine the alignment of this model's gene expression with human leukemia signatures.
• To evaluate the model's utility for preclinical studies and therapeutic development.

Main Methods:

• Male Wistar rats were induced with DMBA to develop leukemia.
• RNA sequencing was performed on whole blood samples.
• Differential gene expression analysis, functional enrichment, and pathway analysis were conducted.

Main Results:

• The DMBA model exhibited upregulation of key leukemia genes (e.g., FLT3, NRAS, KRAS, ABL1, BCR, NPM1).
• Enriched pathways included cell fate, proliferation, apoptosis, and immune regulation.
• Strong transcriptomic overlap with human leukemia gene signatures confirmed the model's translational relevance.

Conclusions:

• The DMBA-induced rat leukemia model accurately reflects human leukemia's molecular and prognostic features.
• This model shows significant potential for preclinical research into leukemogenesis.
• The model is a valuable tool for testing novel therapeutic interventions for leukemia.