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Ref Type Journal Article
PMID (22295124)
Authors Carew JS, Esquivel JA, Espitia CM, Schultes CM, Mülbaier M, Lewis JD, Janssen B, Giles FJ, Nawrocki ST
Title ELR510444 inhibits tumor growth and angiogenesis by abrogating HIF activity and disrupting microtubules in renal cell carcinoma.
Abstract Text Hypoxia-inducible factor (HIF) is an attractive therapeutic target for renal cell carcinoma (RCC) as its high expression due to the loss of von Hippel-Lindau (VHL) promotes RCC progression. Considering this, we hypothesized that ELR510444, a novel orally available small molecule inhibitor of HIF activity, would reduce angiogenesis and possess significant activity in RCC. The mechanism of action and therapeutic efficacy of ELR510444 were investigated in in vitro and in vivo models of RCC.ELR510444 decreased HIF-1α and HIF-2α levels, reduced RCC cell viability and clonogenic survival, and induced apoptosis. VHL-deficient RCC cells were more sensitive to ELR510444-mediated apoptosis and restoration of VHL promoted drug resistance. Higher concentrations of ELR51044 promoted apoptosis independently of VHL status, possibly due to the microtubule destabilizing properties of this agent. ELR510444 significantly reduced tumor burden in the 786-O and A498 RCC xenograft models. These effects were associated with increased necrosis and apoptosis and inhibition of angiogenesis.ELR510444 is a promising new HIF inhibitor that reduced RCC cell viability, induced apoptosis, and diminished tumor burden in RCC xenograft models. ELR510444 also destabilized microtubules suggesting that it possesses vascular disrupting and anti-angiogenic properties. Further investigation of ELR510444 for the therapy of RCC is warranted.


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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
ELR510444 ELR510444 1 0
Drug Name Trade Name Synonyms Drug Classes Drug Description
ELR510444 ELR-510444 ELR510444 is a small molecule inhibitor of HIF, which may result in apoptosis and has the potential to disrupt the tumor vasculature environment (PMID: 22295124).
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
VHL loss renal cell carcinoma sensitive ELR510444 Preclinical - Cell line xenograft Actionable In a preclinical study, renal cell carcinoma cells deficient for VHL were sensitive to ELR510444 both in culture and in cell line xenograft models (PMID: 22295124). 22295124