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Reprograming Carcinoma Associated Fibroblasts by microRNAs
1Research Center of Basic Medical Science, Tianjin Medical University, Tianjin 300070. China.
Abstract:
Carcinoma-associated fibroblasts (CAFs) are activated fibroblasts during development of several cancer types, and therefore emerge as an attractive therapeutic target for cancer therapy. Drugs such as PT-100 and sibrotuzumab that block the functions of CAFs have already been in clinical trials. However, these drugs exhibit limited efficacy in patients, partially due to the fact that currently used biomarkers for determining efficacy are not CAF-specific. Furthermore, depletion of CAFs may promote carcinogenesis and accelerate cancer progression by inducing immunosuppression and hypoxia, leading to reduced survival. Accumulating evidence demonstrates that restoring the expression of key microRNA induces the functional conversion of CAFs into normal fibroblasts by targeting different signaling pathways and metabolic mechanisms. Therefore, reprograming CAFs into normal fibroblasts by altering specific expression of microRNAs, rather than targeted ablation, may be an effective, novel strategy for cancer treatment. This review focuses on specific microRNAs involved in the transformation of CAFs as well as their multiple roles during tumorigenesis and chemo-resistance.
Insights
Reprogramming carcinoma-associated fibroblasts (CAFs) using microRNAs offers a novel cancer therapy. This approach converts CAFs into normal fibroblasts, potentially improving treatment efficacy and patient survival.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Carcinoma-associated fibroblasts (CAFs) are key players in cancer development and serve as therapeutic targets.
- Current therapies targeting CAFs show limited efficacy due to non-specific biomarkers and potential adverse effects like immunosuppression.
- Depleting CAFs can paradoxically accelerate cancer progression and reduce survival.
Purpose of the Study:
- To review microRNAs that can functionally convert CAFs into normal fibroblasts.
- To explore the role of microRNA-mediated CAF reprogramming in cancer treatment strategies.
- To highlight the impact of CAFs on tumorigenesis and chemo-resistance.
Main Methods:
- Literature review focusing on microRNAs targeting CAFs.
- Analysis of signaling pathways and metabolic mechanisms involved in CAF transformation.
- Examination of the role of CAFs in cancer progression and drug resistance.
Main Results:
- Restoring specific microRNA expression can reprogram CAFs into normal fibroblasts.
- MicroRNA-mediated reprogramming targets key signaling and metabolic pathways within CAFs.
- This strategy offers an alternative to CAF ablation, potentially avoiding adverse effects.
Conclusions:
- MicroRNA-based reprogramming of CAFs represents a promising novel strategy for cancer therapy.
- Targeting microRNAs for CAF conversion may overcome limitations of current CAF-targeting drugs.
- Understanding microRNA roles in CAF transformation is crucial for developing effective cancer treatments.
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