Related Experiment Video

Updated: May 17, 2026

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors
10:33

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors

Published on: October 26, 2015

Targeting the nuclear transport machinery by rational drug design

Lei Mao1, Yongliang Yang

  • 1Center for Molecular Medicine, School of Life Science and Biotechnology, Dalian University of Technology, Dalian, 116024, PR China.

Current Pharmaceutical Design
|October 23, 2012
PubMed

Insights

CRM1 (exportin1) is crucial for transporting proteins involved in cell growth and tumor suppression. Inhibiting CRM1 offers a promising therapeutic strategy for cancers and viral infections like HIV.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Pharmacology

Background:

  • CRM1 (exportin1) is a nuclear transport receptor essential for regulating proteins involved in cell growth, tumor suppression, and viral replication.
  • Overexpression of CRM1 is linked to various cancers, including pancreatic and liver cancer, and plays a role in HIV replication.
  • CRM1's involvement in mitosis highlights its significance in cell cycle regulation.

Purpose of the Study:

  • To review the research progress on CRM1 inhibitors over the past 30 years.
  • To provide novel insights into CRM1 drug design using molecular simulation.
  • To highlight CRM1 as a promising therapeutic target for diseases involving cell proliferation.

Main Methods:

  • Literature review of CRM1 inhibitor research.
  • Analysis of CRM1's biological functions and clinical relevance.
  • Molecular simulation techniques for drug design insights.

Main Results:

  • CRM1 regulates critical proteins such as p53, FOXO, and NF-kB.
  • CRM1 facilitates the transport of viral proteins, including HIV Rev.
  • CRM1 inhibition presents a viable strategy for treating proliferative diseases.

Conclusions:

  • CRM1 is a validated therapeutic target for cancer and infectious diseases.
  • Molecular simulation can guide the development of novel CRM1 inhibitors.
  • Targeting CRM1-mediated transport offers a promising avenue for disease treatment.

More Related Videos

Targeted Plasma Membrane Delivery of a Hydrophobic Cargo Encapsulated in a Liquid Crystal Nanoparticle Carrier10:16

Targeted Plasma Membrane Delivery of a Hydrophobic Cargo Encapsulated in a Liquid Crystal Nanoparticle Carrier

Published on: February 8, 2017

Related Concept Videos

Targets for Drug Action: Overview01:26

Targets for Drug Action: Overview

Drugs target macromolecules to modify ongoing cellular processes. Primary drug targets include receptors, ion channels, transporters, and enzymes.
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...
Regulation of Nuclear Protein Sorting01:45

Regulation of Nuclear Protein Sorting

Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
Nuclear Protein Sorting01:34

Nuclear Protein Sorting

Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...
Modified-Release Drug Delivery Systems: Site-Targeted01:24

Modified-Release Drug Delivery Systems: Site-Targeted

Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
Transducer Mechanism: Nuclear Receptors01:31

Transducer Mechanism: Nuclear Receptors

Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
Directionality of Nuclear Transport01:42

Directionality of Nuclear Transport

Ras-related nuclear protein or Ran is a small G protein that cycles between its GTP and GDP bound states. Ran specific regulators, a Ran GTPase Activating Protein or RanGAP present in the cytosol and a Ran guanine nucleotide exchange factor or RanGEF present inside the nucleus regulate GTP/GDP exchange. A high concentration of GTP inside the cells, in addition to this asymmetric distribution of  Ran-specific regulators, leads to a higher RanGTP concentration inside the nucleus. This...