Abstract:
:Targeted drugs are effective when they directly inhibit strong disease drivers, but only a small fraction of diseases feature defined actionable drivers. Alternatively, network-based approaches can uncover new therapeutic opportunities. Applying an integrated phenotypic screening, chemical and phosphoproteomics strategy, here we describe the anaplastic lymphoma kinase (ALK) inhibitor ceritinib as having activity across several ALK-negative lung cancer cell lines and identify new targets and network-wide signaling effects. Combining pharmacological inhibitors and RNA interference revealed a polypharmacology mechanism involving the noncanonical targets IGF1R, FAK1, RSK1 and RSK2. Mutating the downstream signaling hub YB1 protected cells from ceritinib. Consistent with YB1 signaling being known to cause taxol resistance, combination of ceritinib with paclitaxel displayed strong synergy, particularly in cells expressing high FAK autophosphorylation, which we show to be prevalent in lung cancer. Together, we present a systems chemical biology platform for elucidating multikinase inhibitor polypharmacology mechanisms, subsequent design of synergistic drug combinations, and identification of mechanistic biomarker candidates.
journal_name
Nat Chem Bioljournal_title
Nature chemical biologyauthors
Kuenzi BM,Remsing Rix LL,Stewart PA,Fang B,Kinose F,Bryant AT,Boyle TA,Koomen JM,Haura EB,Rix Udoi
10.1038/nchembio.2489subject
Has Abstractpub_date
2017-12-01 00:00:00pages
1222-1231issue
12eissn
1552-4450issn
1552-4469pii
nchembio.2489journal_volume
13pub_type
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