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Molecular Analysis of Endothelial-mesenchymal Transition Induced by Transforming Growth Factor-β Signaling
Published on: August 3, 2018
Large- and small-molecule inhibitors of transforming growth factor-beta signaling
1University of California at San Francisco, P.O. Box 0875, Cancer Research Institute, 2340 Sutter Street, San Francisco, CA 94143-0875, USA. rakhurst@cc.ucsf.edu
Abstract:
A variety of drugs have been developed to inhibit transforming growth factor (TGF)beta signaling. These drugs have been designed to block TGFbeta synthesis, ligand/receptor binding or receptor kinase signaling. Preclinical studies using TGFbeta inhibitors have demonstrated efficacy in reducing metastasis and have shown improvements in cytotoxic drug delivery. Results of phase I/II clinical trials of TGFbeta inhibitors in patients with glioblastoma suggest improved survival rates compared with conventional chemotherapy. The predominant cellular target, whether cancer or stromal cell, immune cell or angiogenesis, may differ between tumor types. Different individuals may show variable responses to drug therapy dependent on both germline genetic variation and the somatic mutation profile of the tumor. A deeper understanding of these issues will assist in targeting the right patients for such therapy, and in limiting unwanted side effects.
Insights
Transforming growth factor-beta (TGF-β) inhibitors show promise in reducing cancer metastasis and improving drug delivery. Clinical trials suggest improved survival rates for glioblastoma patients treated with these novel TGF-β therapies.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Transforming growth factor-beta (TGF-β) signaling pathways are implicated in various cancers.
- Existing therapeutic strategies aim to inhibit TGF-β at different molecular levels, including synthesis, ligand-receptor interactions, and downstream kinase activity.
Purpose of the Study:
- To review the development and efficacy of TGF-β inhibitors in preclinical and clinical settings.
- To explore the potential of TGF-β inhibitors in cancer treatment, focusing on metastasis and drug delivery.
- To discuss patient variability in response to TGF-β inhibitors based on genetic factors.
Main Methods:
- Review of preclinical studies evaluating TGF-β inhibitors for anti-metastatic effects and enhanced drug delivery.
- Analysis of Phase I/II clinical trial data for TGF-β inhibitors in glioblastoma patients.
- Discussion of factors influencing therapeutic response, including tumor type, cellular targets, and patient-specific genetic variations.
Main Results:
- Preclinical studies demonstrate TGF-β inhibitors can reduce metastasis and improve cytotoxic drug delivery.
- Phase I/II clinical trials in glioblastoma patients indicate improved survival rates compared to conventional chemotherapy.
- Therapeutic targets (cancer cells, stromal cells, immune cells, angiogenesis) may vary across tumor types.
Conclusions:
- TGF-β inhibitors represent a promising therapeutic strategy for various cancers.
- Individual patient responses are influenced by germline genetics and tumor somatic mutations, necessitating personalized treatment approaches.
- Further understanding of these factors will optimize patient selection and minimize adverse effects for TGF-β targeted therapies.
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