0

Blockade of Leukemia Inhibitory Factor as a Therapeutic Approach to KRAS Driven Pancreatic Cancer

Man-Tzu Wang, Nicole Fer, Jacqueline Galeas, Eric A Collisson, Sung Eun Kim, Jeremy Sharib, Frank McCormick

Nat Commun. 2019 Jul 11;10(1):3055.

PMID: 31296870

Abstract:

KRAS mutations are present in over 90% of pancreatic ductal adenocarcinomas (PDAC), and drive their poor outcomes and failure to respond to targeted therapies. Here we show that Leukemia Inhibitory Factor (LIF) expression is induced specifically by oncogenic KRAS in PDAC and that LIF depletion by genetic means or by neutralizing antibodies prevents engraftment in pancreatic xenograft models. Moreover, LIF-neutralizing antibodies synergize with gemcitabine to eradicate established pancreatic tumors in a syngeneic, KrasG12D-driven, PDAC mouse model. The related cytokine IL-6 cannot substitute for LIF, suggesting that LIF mediates KRAS-driven malignancies through a non-STAT-signaling pathway. Unlike IL-6, LIF inhibits the activity of the Hippo-signaling pathway in PDACs. Depletion of YAP inhibits the function of LIF in human PDAC cells. Our data suggest a crucial role of LIF in KRAS-driven pancreatic cancer and that blockade of LIF by neutralizing antibodies represents an attractive approach to improving therapeutic outcomes.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
IAR4248619 Leukemia Inhibitory Factor from mouse Leukemia Inhibitory Factor from mouse Price
qrcode