Proteomics

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Phosphoroteomics analysis of ALK signaling in neuroblastoma cells


ABSTRACT: We used mass spectrometry-based proteomics to unravel anaplastic lymphoma kinase (ALK) signaling in the ALK and MYCN amplified neuroblastoma cell line, NB1. We specifically measured the ALK phosphoproteome upon siRNA depletion of ALK and upon ALK inhibition using the ALK-targeting small-molecule inhibitor lorlatinib. For quantitative phosphoproteomics we used a tandem mass tag (TMT)-based approach. Conditions for the TMT 11-plex setup is specified below. For each siRNA depletion experiment, NB1 cells were treated with siRNA (80 nM; as specified below) for 48 hours prior to stimulation with 0.1% DMSO for 30 minutes. For inhibitor treatment, NB1 cells were treated for 30 minutes with either 10 microM or 10 nM lorlatinib. The experimental treatment conditions and TMT11-plex labeling are specified below: 126: siControl replicate 1, 0.1% DMSO 127N: siControl replicate 2, 0.1% DMSO 127C: siControl replicate 3, 0.1% DMSO 128N: siALK sequence 1, 0.1% DMSO 128C: siALK sequence 2, 0.1% DMSO 129N: siALK mix of sequence 1 and 2, 0.1% DMSO 129C: 10 microM lorlatinib replicate 1 130N: 10 microM lorlatinib replicate 2 130C: 10 microM lorlatinib replicate 3 131N: 10 nM lorlatinib replicate 1 131C: 10 nM lorlatinib replicate 2

INSTRUMENT(S): Q Exactive

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Cell Culture, Neuroblast

DISEASE(S): Neuroblastoma

SUBMITTER: Kristina Bennet Emdal  

LAB HEAD: Jesper V. Olsen

PROVIDER: PXD009477 | Pride | 2018-11-21

REPOSITORIES: Pride

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Publications

Integrated proximal proteomics reveals IRS2 as a determinant of cell survival in ALK-driven neuroblastoma.

Emdal Kristina B KB   Pedersen Anna-Kathrine AK   Bekker-Jensen Dorte B DB   Lundby Alicia A   Claeys Shana S   De Preter Katleen K   Speleman Frank F   Francavilla Chiara C   Olsen Jesper V JV  

Science signaling 20181120 557


Oncogenic anaplastic lymphoma kinase (ALK) is one of the few druggable targets in neuroblastoma, and therapy resistance to ALK-targeting tyrosine kinase inhibitors (TKIs) comprises an inevitable clinical challenge. Therefore, a better understanding of the oncogenic signaling network rewiring driven by ALK is necessary to improve and guide future therapies. Here, we performed quantitative mass spectrometry-based proteomics on neuroblastoma cells treated with one of three clinically relevant ALK T  ...[more]

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