Discovery and computer aided potency optimization of a novel class of small molecule CXCR4 antagonists
Victoria Vinader1, Djevdet S Ahmet, Mohaned S Ahmed
1Institute of Cancer Therapeutics, University of Bradford, Bradford, United Kingdom.
Abstract:
Amongst the chemokine signalling axes involved in cancer, chemokine CXCL12 acting on chemokine receptor CXCR4 is particularly significant since it orchestrates migration of cancer cells in a tissue-specific metastatic process. High CXCR4 tumour expression is associated with poor prognosis of lung, brain, CNS, blood and breast cancers. We have identified a new class of small molecule CXCR4 antagonists based on the use of computational modelling studies in concert with experimental determination of in vitro activity against CXCL12-induced intracellular calcium mobilisation, proliferation and chemotaxis. Molecular modelling proved to be a useful tool in rationalising our observed potencies, as well as informing the direction of the synthetic efforts aimed at producing more potent compounds.
Insights
Researchers identified new small molecule CXCR4 antagonists to combat cancer metastasis. These compounds target the CXCL12/CXCR4 pathway, crucial in cancer cell migration and linked to poor prognosis in several cancers.
Area of Science:
- Oncology
- Molecular Biology
- Medicinal Chemistry
Background:
- The CXCL12/CXCR4 chemokine axis is a key driver of cancer cell migration and metastasis.
- High expression of CXCR4 in tumors correlates with poor patient prognosis across various cancers, including lung, brain, CNS, blood, and breast cancers.
Purpose of the Study:
- To identify and develop a novel class of small molecule antagonists targeting the CXCR4 receptor.
- To investigate the efficacy of these antagonists against CXCL12-induced cancer cell functions.
Main Methods:
- Utilized computational modeling for rational drug design.
- Synthesized new small molecule compounds.
- Determined in vitro activity against CXCL12-induced intracellular calcium mobilization, proliferation, and chemotaxis.
Main Results:
- Identified a new class of small molecule CXCR4 antagonists.
- Computational modeling successfully rationalized observed compound potencies.
- In vitro assays confirmed antagonist activity against key cancer cell migration pathways.
Conclusions:
- Small molecule CXCR4 antagonists represent a promising therapeutic strategy for inhibiting cancer metastasis.
- Integrated computational and experimental approaches are effective for discovering potent drug candidates targeting chemokine pathways.
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