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Dissection of Gas and Hedgehog signaling crosstalk reveals therapeutic opportunities to target adenosine receptor 2b in Hedgehog-dependent tumors.
Dissection of Gas and Hedgehog signaling crosstalk reveals therapeutic opportunities to target adenosine receptor 2b in Hedgehog-dependent tumors. bioRxiv : the preprint server for biology Krantz, S., Bell, B., Lund, K., Parra, N. S., Ng, Y., De Oliveira Rosa, N., Mukhopadhyay, S., Croix, B. S., Sarin, K. Y., Weigert, R., Raimondi, F., Iglesias-Bartolome, R. 2025Abstract
Basal cell carcinoma (BCC), the most common human cancer, is driven by hyperactivation of Hedgehog Smoothened (SMO) and GLI transcription. Gas and protein kinase A (PKA) negatively regulate Hedgehog signaling, offering an alternative BCC development and treatment pathway. Here, using histology alongside bulk and single-cell RNA sequencing, we find that mouse BCC-like tumors that originate from Gas pathway inactivation are strikingly similar to those driven by canonical Hedgehog SMO. Interestingly, mutations that reduce Gas and PKA activity are present in human BCC. Tumors from Gas pathway inactivation are independent of the canonical Hedgehog regulators SMO and GPR161, establishing them as an SMO-independent oncogenic Hedgehog signaling model. Finally, we demonstrate that activation of the Gas-coupled adenosine 2B receptor counteracts oncogenic SMO, reducing Hedgehog signaling and tumor formation and offering a potential therapeutic strategy for BCC.
View details for DOI 10.1101/2025.02.21.639530
View details for PubMedID 40060632
View details for PubMedCentralID PMC11888225