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Author Spotlight: A Bicelle Crystallization Setup for ABC Transporter Membrane Proteins to Advance Drug Development

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Published on: August 25, 2023

Updated chemical scaffolds of ABCG2 inhibitors and their structure-inhibition relationships for future development

Md Moinul¹, Sk Abdul Amin², Tarun Jha³

¹Department of Pharmaceutical Sciences, Dr. Harisingh Gour University, Sagar, Madhya Pradesh, India.

European Journal of Medicinal Chemistry

|August 9, 2022

Abstract:

ATP-binding cassette (ABC) transporters are pivotal for cell detoxification and survival. Overexpression of ABC transporter in tumor cells lead to chemoresistance through the efflux of chemotherapeutic agents. P-glycoprotein (Pgp/ABCB1), multidrug resistance protein 1 (MRP1/ABCC1) and breast cancer resistance protein (BCRP/ABCG2) are the major ABC transporters involved in multidrug resistance (MDR) of cancer cells against anticancer drugs. ABCG2 is one of the major transporters involved in the efflux of different cytotoxic agents. Hence, inhibition of ABCG2-mediated transport is considered a prime target to resist MDR of cancer cells. Here, brief structural biology and functions of ABCG2 were discussed with the aim to identify key pharmacophoric elements to design potent and selective as well as non-toxic ABCG2 inhibitors. Structure-inhibition relationships (SIRs) of the earlier reported compounds were also explored. Taken together, this study offers insight for further development of ABCG2 inhibitors.

Insights

Targeting the ABCG2 transporter is key to overcoming cancer multidrug resistance. This study explores ABCG2 structure and function to design effective, non-toxic inhibitors, aiding future drug development.

Area of Science:

Biochemistry
Molecular Biology
Pharmacology

Background:

ATP-binding cassette (ABC) transporters are crucial for cellular detoxification and survival.
Overexpression of ABC transporters in tumor cells contributes to chemoresistance by effluxing chemotherapeutic agents, with P-glycoprotein (Pgp/ABCB1), multidrug resistance protein 1 (MRP1/ABCC1), and breast cancer resistance protein (BCRP/ABCG2) being major players in cancer multidrug resistance (MDR).

Purpose of the Study:

To discuss the structural biology and functions of ABCG2.
To identify key pharmacophoric elements for designing potent, selective, and non-toxic ABCG2 inhibitors.
To explore structure-inhibition relationships (SIRs) of previously reported compounds.

Main Methods:

Literature review of ABCG2 structural biology and function.
Analysis of structure-inhibition relationships (SIRs) of existing ABCG2 inhibitors.

Main Results:

ABC transporters, particularly ABCG2, play a significant role in cancer multidrug resistance through the efflux of cytotoxic agents.
Understanding ABCG2's structure and function is essential for developing effective inhibitors.
Structure-inhibition relationships provide a basis for rational drug design.

Conclusions:

Inhibition of ABCG2-mediated transport is a critical strategy to overcome MDR in cancer cells.
This study provides insights for the rational design and development of novel ABCG2 inhibitors.
Further research into ABCG2 inhibitors holds promise for improving cancer chemotherapy efficacy.

Read full analysis

Keywords:

ABCG2 ABCG2 inhbitor MDR Medicinal chemistry SIRs

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