Deciphering the Molecular Orchestration of Lung Organogenesis in Zebrafish Models

Organogenesis is a critical phase of embryonic development whereby specific organs form from a relatively undifferentiated mass of cells. Our study focuses on elucidating the genetic and molecular pathways involved in lung organogenesis using zebrafish as a model organism. Zebrafish provides an ideal system due to their genetic tractability and transparent embryos which facilitate live imaging. We employed CRISPR/Cas9 gene editing to disrupt key transcription factors hypothesized to be involved in lung formation. RNA sequencing and subsequent pathway analysis revealed significant upregulation in the Wnt and Fgf signaling pathways, which were confirmed via in situ hybridization. Quantitative PCR further supported these findings, showing a 45% increase in Wnt2b expression and a 60% increase in Fgf10 expression in mutated embryos. Our results suggest that these pathways not only play a pivotal role in lung organogenesis but are also tightly regulated by a network of transcription factors including Tbx4 and Sox2. Understanding these molecular players and their interactions provides insights into the fundamental processes of organ development and holds potential implications for regenerative medicine. Future work will focus on validating these findings in mammalian models to explore therapeutic avenues for lung regeneration.