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AANG: A natural compound formulation for targeting macrophage-myofibroblast transition in non-small-cell lung
Max Kam-Kwan Chan1, Philip Chiu-Tsun Tang1, Zoey Zeyuan Ji1
1Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.
Abstract:
Cancer-associated fibroblasts (CAFs) are major components of the tumor microenvironment (TME). They are highly heterogeneous containing both anti-cancer and pro-tumor populations, which largely limits their translational development. Recently, we have identified macrophage-myofibroblast transition (MMT) as a novel and key origin of pro-tumoral CAF in non-small-cell lung cancer (NSCLC), targeting it with Traditional Chinese Medicine (TCM) may represent a safe and effective strategy for solid tumors. Here, by spatial single-cell bioinformatics, we revealed that not only Smad3 activation but also Smad7 reduction occurs in the macrophages undergoing MMT in clinical NSCLC. Therefore, we optimized our well-established TCM-derived natural product formulation AANG, which remodulated TGF-β1/Smad3/Smad7 signaling and synergistically blocked MMT on the bone marrow derived macrophages (BMDM) in vitro. More encouragingly, this optimized AANG can effectively block MMT-derived cancer progression on mouse cancer models with syngeneic lung cancer LLC and human NSCLC xenograft A549 without side-effect in vivo. Thus, AANG may represent the first natural compound formulation for blocking MMT-derived pro-tumoral CAF formation in the clinical NSCLC.
Insights
Researchers identified macrophage-myofibroblast transition (MMT) as a source of pro-tumorigenic cancer-associated fibroblasts (CAFs) in non-small-cell lung cancer (NSCLC). A optimized Traditional Chinese Medicine (TCM) formulation, AANG, effectively blocked MMT and cancer progression in preclinical models.
Area of Science:
- Oncology
- Immunology
- Pharmacology
Background:
- Cancer-associated fibroblasts (CAFs) are key components of the tumor microenvironment (TME), exhibiting heterogeneity that hinders therapeutic development.
- Macrophage-myofibroblast transition (MMT) has been identified as a significant source of pro-tumoral CAFs in non-small-cell lung cancer (NSCLC).
Purpose of the Study:
- To investigate the role of Smad signaling in MMT within NSCLC.
- To evaluate the efficacy of an optimized Traditional Chinese Medicine (TCM) formulation, AANG, in blocking MMT and subsequent cancer progression.
Main Methods:
- Spatial single-cell bioinformatics analysis of clinical NSCLC samples.
- In vitro studies using bone marrow-derived macrophages (BMDM) treated with optimized AANG.
- In vivo evaluation of AANG in mouse models of NSCLC (LLC and A549 xenografts).
Main Results:
- Spatial single-cell bioinformatics revealed Smad3 activation and Smad7 reduction in MMT macrophages in NSCLC.
- Optimized AANG modulated TGF-β1/Smad3/Smad7 signaling, effectively blocking MMT in BMDM in vitro.
- AANG demonstrated efficacy in blocking MMT-derived cancer progression in vivo without observable side effects.
Conclusions:
- MMT is a critical pathway for pro-tumoral CAF generation in NSCLC.
- Optimized AANG shows potential as a novel therapeutic agent for targeting MMT-derived CAFs in NSCLC.
- AANG may be the first natural compound formulation to block MMT-derived pro-tumoral CAF formation in clinical NSCLC.
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