Tumour patients with high RasGRP1 expression have better clinical outcomes than those with low RasGRP1 expression. Considering that acute inflammation rarely leads to tumorigenesis, this study suggests that RasGRP1 may be an important bifunctional regulator of the acute inflammatory response and tumour growth.
2 years ago
Journal
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IL6 (Interleukin 6) • RASGRP1 (RAS Guanyl Releasing Protein 1)
Intriguingly, this increased fitness only manifests in native hematopoiesis, and not in BM transplantation (BMT) assays. In this commentary we summarize key features of our RoLoRiG model, elaborate on BM niche importance, and discuss differences between native hematopoiesis and BMT in the context of stem cell metabolism.
In agreement with these mechanistic findings, hRASGRP1-ires-EGFP enhances fitness of stem- and progenitor- cells, but only in the context of native hematopoiesis. RASGRP1 overexpression is distinct from KRAS or NRAS, does not cause acute leukemia on its own, and leukemia virus insertion frequencies predict that RASGRP1 overexpression can effectively cooperate with lesions in many other genes to cause acute T-ALL.