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Updated: Feb 28, 2026

2 in 1: One-step Affinity Purification for the Parallel Analysis of Protein-Protein and Protein-Metabolite Complexes
Published on: August 6, 2018
Dataset to delineate changes in association between Akt1 and its interacting partners as a function of active state
Nutan Gupta1, Shweta Duggal1, Noor Jailkhani1
1International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asif Ali Marg, New Delhi 110067, India.
Abstract:
Akt1 is a multi-functional protein, implicated in multiple human solid tumors. Pertaining to its key role in cell survival, Akt1 is under focus for development of targeted therapies. Functional diversity of Akt1 is a result of its interactions with other proteins; which changes with changing context. This investigation was designed to capture the dynamics of Akt1 Interactome as a function of its active state. Delineating dynamic changes in association of Akt1 with its interactors could help us comprehend how it changes as a function of inhibition of its active form. Similar information on changes in Akt1 interactome as of now is not well explored. Akt1 expressing HEK293 cells were cultured in light and heavy labeled SILAC media. Normal lysine and arginine were incorporated as light labels while for heavy labeling the isotopes were 8 and 10 Da heavier. Light labeled cells represented the indigenous state of Akt1 interactome while heavy labeled cells represented Akt1 interactome in presence of its allosteric inhibitor, MK-2206. Equal number of cells from both conditions were pooled, lysed and subjected to Affinity Purification coupled to Mass Spectroscopy (AP-MS). Additionally, SILAC labeling aided in quantitative estimation of changing association of a number of proteins which were common to the two experimental conditions, with Akt1. Data are available via ProteomeXchange with identifier PXD005976.
Insights
This study explored the dynamic Akt1 interactome by comparing its native state to its inhibited form using SILAC and AP-MS. Findings reveal how Akt1 protein interactions change upon inhibition, offering insights for targeted cancer therapies.
Area of Science:
- Molecular Biology
- Proteomics
- Cancer Research
Background:
- The protein kinase Akt1 plays a crucial role in cell survival and is implicated in various human solid tumors.
- Targeted therapies focusing on Akt1 are under development due to its significance in cancer progression.
- Understanding the dynamic interactions of Akt1 is essential for comprehending its functional diversity and developing effective treatments.
Purpose of the Study:
- To investigate the dynamic changes in the Akt1 interactome in response to its active state.
- To delineate how Akt1 protein associations are altered upon inhibition of its active form.
- To provide novel insights into the context-dependent nature of the Akt1 interactome.
Main Methods:
- Utilized SILAC (Stable Isotope Labeling by Amino acids in Cell culture) for quantitative proteomic analysis.
- Employed Affinity Purification coupled to Mass Spectrometry (AP-MS) to identify Akt1 interacting proteins.
- Compared the Akt1 interactome in untreated HEK293 cells (light labeled) with cells treated with the allosteric inhibitor MK-2206 (heavy labeled).
Main Results:
- Identified dynamic changes in protein associations with Akt1 based on its activation state.
- Quantitatively assessed alterations in the Akt1 interactome upon inhibition with MK-2206.
- Revealed context-specific interaction profiles of Akt1.
Conclusions:
- The study provides a dynamic view of the Akt1 interactome, highlighting its context-dependent nature.
- Understanding these dynamic interactome shifts can inform the development of targeted Akt1-based cancer therapies.
- The findings contribute to a deeper comprehension of Akt1 signaling in cancer.
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