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Functional Lipid−Protein Interactions in Integral Membrane Proteins

Project description

Trans-membrane domains as novel drug targets

Membrane proteins constitute important drug targets against many diseases. However, the nature of the ligand binding sites on these proteins limits the specificity of the drugs, leading to many side effects. Emerging evidence on the interaction of trans-membrane domains (TMD) with plasma membrane lipids has led researchers of the EU-funded Lipopeutics project to investigate the potential of targeting these parts of the proteins with allosteric drugs. Using molecular dynamics simulations, the project will identify specific lipid binding sites within TMDs and design compounds capable of binding within the hydrophobic TMD pocket, stabilising the functional state of the protein.

Objective

Membrane proteins constitute a third of the human proteome and their relevance to disease has led these proteins to make up more than half of all current drug targets. However, despite this push to identify agents for membrane proteins, the number of established disease-associated targets are limited. The 'open' and solvent-accessible nature of most membrane protein orthosteric sites often results in limited specificity of potential drugs.

The Trans-Membrane domains (TMD) while displaying greater variability among membrane proteins were however long considered lacking in specific interactions. But significant developments in experimental techniques are now identifying this domain to interact and be actively regulated by the diverse lipid components of the membrane. This Lipopeutics project attempts to determine if the analysis of the protein's Lipid interactions can be a pathway to the development of allosteric drugs targeted at these bilayer-exposed pockets.

Unfolding in three major steps, the project first aims to identify specific lipid binding sites with the TMD through the use of long-timescale coarse-grain Molecular Dynamics simulations. Subsequently, the role of this lipid binding event in the protein's functional modulation is validated through atomistic simulations using the Markov State Modelling approach. Finally, cheminformatic screening is used to design lipid-mimicking compounds that are capable of binding within the hydrophobic pocket and stabilizing specific protein functional states.

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Topic(s)

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MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Call for proposal

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(opens in new window) H2020-MSCA-IF-2019

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Coordinator

KUNGLIGA TEKNISKA HOEGSKOLAN
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 191 852,16
Address
BRINELLVAGEN 8
100 44 Stockholm
Sweden

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Region
Östra Sverige Stockholm Stockholms län
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 191 852,16
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