1.Analysis of Toxicity Characteristics and Rational Drug Use of Polygoni Multiflori Radix
Qiongyi FU ; Yupu QI ; Yu HUAN ; Yagang SONG ; Xiangxiang WU ; Mingsan MIAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):222-231
ObjectivePolygoni Multiflori Radix is a commonly used tonic traditional Chinese medicine (TCM) in clinical practice, but liver injury has often been reported in recent years. Some related preparations containing Polygoni Multiflori Radix have been reported by the National Medical Products Administration many times for the risk of liver injury. This has caused extensive discussion on the potential toxicity of TCM in China and abroad, which has limited the clinical use of Polygoni Multiflori Radix to some extent. To understand the adverse reactions of Polygoni Multiflori Radix, the safe and rational use of Polygoni Multiflori Radix in clinical practice was discussed. MethodsThe pharmacovigilance thought of modern Chinese medicine and the TCM pharmacovigilance system framework of ''identification of poison, use of poison, anti-poison, and detoxification'' were employed to mine the relevant toxicity records, usage and dosage, processing compatibility, and contraindication of taking Polygoni Multiflori Radix in ancient books. The drug safety information of Polygoni Multiflori Radix was summarized by comparing with modern reports. ResultsA total of 74 ancient books related to Polygoni Multiflori Radix were included, suggesting that the toxicity of Polygoni Multiflori Radix was recognized in ancient times. The main chemical components of Polygoni Multiflori Radix had both efficacy and toxicity, and the adverse reactions may be related to long-term use, excessive use, and individual differences. The results showed that the toxic components of Polygoni Multiflori Radix could be reduced by peeling, steaming with black beans, and processing without iron tools. The toxic effects of Polygoni Multiflori Radix could be reduced by the compatibility of Polygoni Multiflori Radix with Poria, Psoraleae Fructus, and Cistanches Herba. ConclusionReasonable dosage, standard processing, correct compatibility, and syndrome differentiation are the key points to standardize the use of Polygoni Multiflori Radix and reduce the incidence of adverse reactions. Clinically, the toxicity classification of TCM should be strengthened, and the susceptible population should be prioritized. The detection indicators and early warning mechanisms should be improved, and precise drug dosage and course of treatment should be guaranteed. These measures can ensure the safe use of Polygoni Multiflori Radix.
2.Exploring Pathogenesis and Treatment Principles of Chronic Obstructive Pulmonary Disease Based on Spleen-mitochondria Correlation
Shiyi WANG ; Miao YU ; Xinyao HE ; Zi WANG ; Haijun LUAN ; Yibo SUN ; Haotong WANG ; Linlin WANG ; Lijian PANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):258-264
According to the Qi-blood-body fluid theory and the association between the spleen in visceral manifestation theory of traditional Chinese medicine (TCM) and mitochondria in modern cellular biology, it is proposed that the role of the spleen in generating and transforming Qi and blood is analogous to the energy-producing function of mitochondria—both serving as fundamental power sources for vital activities of the human body. The spleen governs transportation and transformation, playing a critical role in energy metabolism and the digestion and absorption of nutrients. Similarly, mitochondria are vital for maintaining physiological functions such as cellular energy supply, cell survival, and overall human metabolism. Furthermore, spleen deficiency is closely linked to mitochondrial dysfunction. Accordingly, mitochondrial energy conversion and substance metabolism are regarded as the microscopic essence of the spleen's function in transportation and transformation. Spleen deficiency and mitochondrial dysfunction contribute to the formation of pathological products such as phlegm-turbidity and blood stasis. This aligns with the pathogenesis of chronic obstructive pulmonary disease (COPD), with Qi deficiency as the root cause and phlegm-turbidity and blood stasis as the manifestations. Therefore, the integrative treatment of COPD should follow the therapeutic principle of invigorating the spleen and reinforcing healthy Qi, while also resolving phlegm and removing blood stasis to address both root cause and manifestations. This approach can improve the mitochondrial function, regulate energy metabolism, and reduce oxidative stress levels to alleviate COPD symptoms, slow down disease progression, and improve prognosis. By integrating the holistic concept of TCM with molecular mechanisms of modern medicine, this paper explores the pathogenesis and therapeutic principles of COPD from the spleen-mitochondria correlation. It not only provides a new direction for the modern development of TCM and the integration of Chinese and Western medicine but also offers a theoretical foundation for the integrated treatment of chronic, complex age-related diseases.
3.Analysis of Toxicity Characteristics and Rational Drug Use of Polygoni Multiflori Radix
Qiongyi FU ; Yupu QI ; Yu HUAN ; Yagang SONG ; Xiangxiang WU ; Mingsan MIAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):222-231
ObjectivePolygoni Multiflori Radix is a commonly used tonic traditional Chinese medicine (TCM) in clinical practice, but liver injury has often been reported in recent years. Some related preparations containing Polygoni Multiflori Radix have been reported by the National Medical Products Administration many times for the risk of liver injury. This has caused extensive discussion on the potential toxicity of TCM in China and abroad, which has limited the clinical use of Polygoni Multiflori Radix to some extent. To understand the adverse reactions of Polygoni Multiflori Radix, the safe and rational use of Polygoni Multiflori Radix in clinical practice was discussed. MethodsThe pharmacovigilance thought of modern Chinese medicine and the TCM pharmacovigilance system framework of ''identification of poison, use of poison, anti-poison, and detoxification'' were employed to mine the relevant toxicity records, usage and dosage, processing compatibility, and contraindication of taking Polygoni Multiflori Radix in ancient books. The drug safety information of Polygoni Multiflori Radix was summarized by comparing with modern reports. ResultsA total of 74 ancient books related to Polygoni Multiflori Radix were included, suggesting that the toxicity of Polygoni Multiflori Radix was recognized in ancient times. The main chemical components of Polygoni Multiflori Radix had both efficacy and toxicity, and the adverse reactions may be related to long-term use, excessive use, and individual differences. The results showed that the toxic components of Polygoni Multiflori Radix could be reduced by peeling, steaming with black beans, and processing without iron tools. The toxic effects of Polygoni Multiflori Radix could be reduced by the compatibility of Polygoni Multiflori Radix with Poria, Psoraleae Fructus, and Cistanches Herba. ConclusionReasonable dosage, standard processing, correct compatibility, and syndrome differentiation are the key points to standardize the use of Polygoni Multiflori Radix and reduce the incidence of adverse reactions. Clinically, the toxicity classification of TCM should be strengthened, and the susceptible population should be prioritized. The detection indicators and early warning mechanisms should be improved, and precise drug dosage and course of treatment should be guaranteed. These measures can ensure the safe use of Polygoni Multiflori Radix.
4.Exploring Pathogenesis and Treatment Principles of Chronic Obstructive Pulmonary Disease Based on Spleen-mitochondria Correlation
Shiyi WANG ; Miao YU ; Xinyao HE ; Zi WANG ; Haijun LUAN ; Yibo SUN ; Haotong WANG ; Linlin WANG ; Lijian PANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):258-264
According to the Qi-blood-body fluid theory and the association between the spleen in visceral manifestation theory of traditional Chinese medicine (TCM) and mitochondria in modern cellular biology, it is proposed that the role of the spleen in generating and transforming Qi and blood is analogous to the energy-producing function of mitochondria—both serving as fundamental power sources for vital activities of the human body. The spleen governs transportation and transformation, playing a critical role in energy metabolism and the digestion and absorption of nutrients. Similarly, mitochondria are vital for maintaining physiological functions such as cellular energy supply, cell survival, and overall human metabolism. Furthermore, spleen deficiency is closely linked to mitochondrial dysfunction. Accordingly, mitochondrial energy conversion and substance metabolism are regarded as the microscopic essence of the spleen's function in transportation and transformation. Spleen deficiency and mitochondrial dysfunction contribute to the formation of pathological products such as phlegm-turbidity and blood stasis. This aligns with the pathogenesis of chronic obstructive pulmonary disease (COPD), with Qi deficiency as the root cause and phlegm-turbidity and blood stasis as the manifestations. Therefore, the integrative treatment of COPD should follow the therapeutic principle of invigorating the spleen and reinforcing healthy Qi, while also resolving phlegm and removing blood stasis to address both root cause and manifestations. This approach can improve the mitochondrial function, regulate energy metabolism, and reduce oxidative stress levels to alleviate COPD symptoms, slow down disease progression, and improve prognosis. By integrating the holistic concept of TCM with molecular mechanisms of modern medicine, this paper explores the pathogenesis and therapeutic principles of COPD from the spleen-mitochondria correlation. It not only provides a new direction for the modern development of TCM and the integration of Chinese and Western medicine but also offers a theoretical foundation for the integrated treatment of chronic, complex age-related diseases.
5.Regulation of Relevant Signaling Pathways by Traditional Chinese Medicine in Intervention of Pancreatic Cancer: A Review
Quanyou ZHAO ; Conghui ZHAO ; Yu ZHANG ; Yiping FU ; Yuting LIU ; Xiaoran WANG ; Zhanzhan LI ; Mingsan MIAO ; Li BAI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):280-289
Pancreatic cancer is a highly malignant solid tumor of the digestive system with extremely poor treatment prognosis. Although its incidence rate is low, its mortality rate is extremely high. In recent years, the number of diagnosed cases worldwide has continued to rise, making pancreatic cancer the sixth leading cause of cancer-related deaths globally. Currently, clinical treatment primarily relies on operation and chemotherapy to suppress tumors. However, these approaches face challenges such as suboptimal efficacy, high postoperative recurrence rates, and severe adverse reactions. Therefore, identifying safe and effective treatment modalities remains a pressing challenge for the medical community. In recent years, research on traditional Chinese medicine (TCM) interventions for pancreatic cancer has increased significantly. Multiple studies have shown that single-herb TCM, TCM formulas, and their derived single compounds can regulate the levels of tumor cell signaling pathways through multiple action targets. They inhibit the development and progression of pancreatic cancer by inhibiting cancer cell proliferation, promoting cell apoptosis, inhibiting tumor angiogenesis, reducing cancer cell invasion and migration capabilities, regulating the cell cycle, and modulating the tumor microenvironment. Additionally, TCM has the advantages of significantly enhancing the anticancer efficacy of chemotherapy drugs and causing fewer adverse reactions. However, the specific action mechanisms by which TCM intervenes in pancreatic cancer remain unclear. Further extensive research is still needed to validate the role of regulating classical signaling pathways such as phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR), Wnt/β-catenin, nuclear transcription factor-κB (NF-κB), notch, and hedgehog in the treatment of pancreatic cancer. Therefore, this paper reviewed Chinese and international studies on TCM intervention in pancreatic cancer through relevant signaling pathways in recent years, summarized the potential action mechanisms of TCM in the treatment of pancreatic cancer, and provided references for related research in the future.
6.Chinese Medicine Regulates Nrf2 Signaling Pathway for Treating Hepatic Fibrosis: A Review
Shuxuan QIU ; Lin GUO ; Ruiying WANG ; Xudong MA ; Mingsan MIAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(9):276-283
Hepatic fibrosis (HF) is an abnormal repair process that occurs after chronic liver injury. It is characterized by excessive accumulation of extracellular matrix in the liver, resulting in fibrous tissue hyperplasia, which may further develop into cirrhosis and even liver cancer. Currently, there is a lack of specific anti-HF drugs in clinical practice. Traditional Chinese medicine (TCM) has advantages in the treatment of HF, including multi-component and multi-target interventions with high safety, and can significantly delay the progression of HF. It has therefore become a current research hotspot. Nuclear factor erythroid 2-related factor 2 (Nrf2), as a key transcription factor involved in antioxidant stress, can effectively intervene in the progression of HF by activating the expression of downstream antioxidant enzymes and detoxification genes. This article systematically reviews the mechanisms by which active components of Chinese medicine (such as flavonoids, polysaccharides, and saponins) and TCM compound prescriptions (such as Haobie Yangyin Ruanjian prescription and Biejia Xiaozheng pills) exert anti-fibrotic effects through activation of the Nrf2 signaling pathway, including enhancing antioxidant capacity, inhibiting inflammatory responses, reducing hepatocyte apoptosis, improving mitochondrial function, and inhibiting the ferroptosis pathway. In addition, this article points out the current shortcomings in research based on the Nrf2 signaling pathway and proposes corresponding suggestions to promote related studies. It also provides an important theoretical basis for the development of novel anti-HF Chinese medicine targeting Nrf2.
7.Mechanisms of Salvianolic Acid B in Inhibiting Epithelial-mesenchymal Transition in Non-small Cell Lung Cancer by Downregulating PAICS Expression
Bo XU ; Jixian ZHANG ; Linling HU ; Bo JIANG ; Shasha YUAN ; Yiling FAN ; Zhishen RUAN ; Yihan YU ; Qing MIAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):23-33
ObjectiveTo investigate the molecular mechanisms by which salvianolic acid B (SalB) inhibits epithelial-mesenchymal transition (EMT) in non-small cell lung cancer (NSCLC) by downregulating phosphoribosylaminoimidazole carboxylase and phosphoribosylaminoimidazole succinocarboxamide synthetase (PAICS) expression. MethodsNSCLC A549 cells and normal bronchial epithelial cells (bronchial epithelium transformed with Ad12-SV40 2B, BEAS-2B) were used as models. Cell viability was assessed using the cell counting kit-8 (CCK-8) assay after treatment with SalB (0, 50, 100, 200, 300, 400, 500 μmol·L-1 for 24 or 48 h to determine effective and safe intervention concentrations. Cell proliferation, cell cycle distribution, and apoptosis were evaluated by 5-ethynyl-2′-deoxyuridine (EdU) staining and flow cytometry, respectively. Wound healing and Transwell invasion assays were performed to assess cell migration and invasion. RNA sequencing combined with bioinformatic analysis was conducted to identify differentially expressed genes and functional enrichment. Molecular docking was used to predict the binding ability between SalB and PAICS, and the cellular thermal shift assay (CETSA) was performed to evaluate the effect of SalB on the thermal stability of the PAICS protein. Western blot (WB) was used to detect the effects of SalB on PAICS and EMT-related proteins (E-cadherin, N-cadherin, Vimentin, Snail, and Slug). A functional rescue assay was conducted by PAICS overexpression via plasmid transfection. ResultsCompared with the control group, SalB inhibited A549 cell viability in a dose-dependent manner (P<0.05), and the effective concentrations (≤300 μmol·L-1) showed no significant cytotoxicity in BEAS-2B cells. Within this concentration range, SalB significantly inhibited A549 cell proliferation, migration, and invasion, and induced G0/G1 phase arrest and apoptosis (P<0.05). Transcriptomic analysis showed that SalB significantly downregulated PAICS expression, and its functions were enriched in cell proliferation and EMT. Bioinformatic analysis indicated that PAICS is highly expressed in lung adenocarcinoma and is associated with poor prognosis (P<0.01). Molecular docking showed that SalB has strong binding ability to PAICS (binding energy -9.1 kcal·mol-1. CETSA results showed that SalB significantly increased the thermal stability of the PAICS protein (P<0.05). WB results showed that, compared with the control group, SalB dose-dependently downregulated PAICS expression, upregulated E-cadherin, and downregulated N-cadherin, Vimentin, Snail, and Slug (P<0.05). Functional rescue experiments showed that, compared with the empty vector group, PAICS overexpression significantly enhanced A549 cell proliferation, migration, and invasion, promoted cell cycle progression, and inhibited apoptosis (P<0.05). Meanwhile, compared with the empty vector + SalB-H group, PAICS overexpression partially reversed the inhibitory effects of SalB on malignant phenotypes and EMT-related proteins (N-cadherin, Vimentin, Snail, and Slug), and downregulated E-cadherin expression (P<0.05,P<0.01), indicating that PAICS is a key functional target mediating the antitumor effects of SalB. ConclusionSalB effectively inhibits EMT progression and cell cycle progression in A549 cells by downregulating PAICS expression, thereby exerting anti-NSCLC effects. This study not only reveals that PAICS is a key functional target through which SalB regulates EMT, but also provides experimental evidence supporting SalB as a potential candidate drug for inhibiting NSCLC metastasis.
8.Eupatilin Inhibits Proliferation, Invasion, and Metastasis of Non-small Cell Lung Cancer via EZH2/H3K27me3 Signaling Pathway
Bo XU ; Yihan YU ; Linling HU ; Bo JIANG ; Yu QI ; Shasha YUAN ; Yiling FAN ; Jixian ZHANG ; Qing MIAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):58-69
ObjectiveTo investigate the mechanisms by which eupatilin (Eup) inhibits proliferation, invasion, and metastasis of non-small cell lung cancer (NSCLC) through the enhancer of zeste homolog 2/histone H3 lysine 27 trimethylation (EZH2/H3K27me3) signaling pathway. MethodsIn vivo, a subcutaneous xenograft tumor model was established in nude mice using H1299 cells to evaluate the anti-NSCLC effects of Eup. Immunohistochemistry (IHC-P) was used to detect the expression of proliferation- and invasion/metastasis-related proteins, including proliferating cell nuclear antigen (PCNA), matrix metalloproteinase-2 (MMP-2), matrix metalloproteinase-9 (MMP-9), and vascular endothelial growth factor A (VEGFA). In vitro, cell counting kit-8 (CCK-8) assays were performed to determine the viability of H1299 cells treated with different concentrations of Eup (0-200 μmol·L-1) and to select appropriate concentrations. Colony formation and 5-ethynyl-2′-deoxyuridine (EdU) assays were used to evaluate cell proliferation. Wound healing and invasion assays were conducted to assess cell migration and invasion. Human umbilical vein endothelial cell (HUVEC) angiogenesis assays were used to evaluate the effects of Eup on angiogenesis. Transcriptomic analysis was performed to identify the targets of Eup in H1299 cells and to explore its major functions. Molecular docking and molecular dynamics simulations were conducted to predict the binding affinity and interaction stability between Eup and its target proteins. Western blot was used to detect the effects of Eup on the expression levels of EZH2/H3K27me3 pathway-related proteins and proliferation- and invasion/metastasis-related proteins, including PCNA, MMP-2, MMP-9, and VEGFA. ResultsIn the subcutaneous xenograft model, compared with the model group, Eup treatment dose-dependently inhibited the growth of H1299 xenograft tumors, and the tumor inhibition rate was significantly increased (P<0.05). IHC-P results showed that, compared with the model group, high-dose Eup significantly reduced the expression levels of PCNA, MMP-2, MMP-9, and VEGFA in vivo (P<0.05). In vitro, compared with the control group, Eup inhibited the proliferation, invasion, and metastasis of NSCLC cells in a concentration-dependent manner. Transcriptomic analysis further showed that, compared with the control group, Eup significantly downregulated EZH2 expression, and its functional effects were associated with inhibition of tumor metastasis. Molecular docking and molecular dynamics simulations indicated that Eup exhibited strong binding affinity with EZH2 and stable interactions. Western blot results demonstrated that, compared with the model group, Eup significantly inhibited, in a dose-dependent manner, the expression levels of EZH2, H3K27me3, and proliferation- and invasion/metastasis-related proteins (PCNA, MMP-2, MMP-9, and VEGFA) in both in vivo and in vitro experiments (P<0.05). In vitro, compared with the control group, overexpression of EZH2 via plasmid transfection partially reversed the inhibitory effects of Eup on the expression of key proteins involved in proliferation and invasion/metastasis in H1299 cells. ConclusionEup effectively inhibits the proliferation, migration, and invasion of H1299 cells both in vivo and in vitro. The underlying mechanism may be related to inhibition of the EZH2/H3K27me3 signaling pathway and downregulation of proliferation- and invasion/metastasis-related proteins, including PCNA, MMP-2, MMP-9, and VEGFA. Eup may serve as a potential therapeutic agent for suppressing proliferation and invasion/metastasis in NSCLC.
9.Anti-lung Cancer Mechanisms of Yang-warming Herbs and Formulas: A Review
Bo XU ; Yu QI ; Jixian ZHANG ; Linling HU ; Bo JIANG ; Yilong ZOU ; Cunyu FAN ; Yiling FAN ; Qing MIAO ; Yihan YU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):70-79
Lung cancer, particularly non-small cell lung cancer (NSCLC), is the malignant tumor with the highest incidence and mortality in China and worldwide. In 2022, the global number of deaths reached 1.8 million, accounting for 18.7% of all cancer-related deaths, seriously threatening human health and life, and posing a severe challenge for prevention and treatment. Although treatment strategies for lung cancer have been continuously enriched in recent years, and progress has been made in targeted therapy and immunotherapy, long-term survival benefits remain limited due to primary or acquired drug resistance, low immune responsiveness, and chemotherapy-related toxicities. Therefore, there is an urgent need to explore safe and effective adjunctive therapeutic strategies. Traditional Chinese medicine (TCM), with its advantages of holistic regulation and individualized syndrome differentiation, has played an increasingly prominent role in comprehensive cancer treatment. TCM holds that "Yang deficiency leads to accumulation" is a key pathogenesis of tumors. Based on the theory that "Yang transforms Qi, while Yin forms substance", deficiency of Yang Qi results in impaired warming and transformation functions, leading to internal accumulation of Yin-cold. This is closely related to dysregulation of the immune microenvironment, "cold tumor" characteristics, and dysfunction of the neuroendocrine system in modern medicine. Accordingly, the therapeutic strategy of "warming Yang, supporting healthy Qi, and combating cancer" has gained increasing attention. In recent years, commonly used Yang-warming Chinese herbs, including Aconiti Lateralis Radix Praeparata, Zingiberis Rhizoma, Cinnamomi Cortex, Epimedii Folium, and Psoraleae Fructus, as well as their active constituents, have achieved notable progress in anti-lung cancer research by regulating multiple signaling pathways, inducing apoptosis, inhibiting metastasis, and reversing drug resistance. In addition, Yang-warming formulae such as Sini Tang and Yanghe Tang have shown promising effects in alleviating myelosuppression, improving cancer-related fatigue, managing malignant pleural effusion, and relieving cancer pain. These therapies exhibit toxicity-reducing and efficacy-enhancing effects, significantly improving patients' quality of life and survival benefits. To systematically summarize the roles and mechanisms of Yang-warming Chinese herbal medicines and compound formulae in lung cancer, this paper provides a comprehensive review of recent advances, aiming to offer insights for the clinical practice of TCM in the prevention and treatment of lung cancer.
10.Mechanisms of Salvianolic Acid B in Inhibiting Epithelial-mesenchymal Transition in Non-small Cell Lung Cancer by Downregulating PAICS Expression
Bo XU ; Jixian ZHANG ; Linling HU ; Bo JIANG ; Shasha YUAN ; Yiling FAN ; Zhishen RUAN ; Yihan YU ; Qing MIAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):23-33
ObjectiveTo investigate the molecular mechanisms by which salvianolic acid B (SalB) inhibits epithelial-mesenchymal transition (EMT) in non-small cell lung cancer (NSCLC) by downregulating phosphoribosylaminoimidazole carboxylase and phosphoribosylaminoimidazole succinocarboxamide synthetase (PAICS) expression. MethodsNSCLC A549 cells and normal bronchial epithelial cells (bronchial epithelium transformed with Ad12-SV40 2B, BEAS-2B) were used as models. Cell viability was assessed using the cell counting kit-8 (CCK-8) assay after treatment with SalB (0, 50, 100, 200, 300, 400, 500 μmol·L-1 for 24 or 48 h to determine effective and safe intervention concentrations. Cell proliferation, cell cycle distribution, and apoptosis were evaluated by 5-ethynyl-2′-deoxyuridine (EdU) staining and flow cytometry, respectively. Wound healing and Transwell invasion assays were performed to assess cell migration and invasion. RNA sequencing combined with bioinformatic analysis was conducted to identify differentially expressed genes and functional enrichment. Molecular docking was used to predict the binding ability between SalB and PAICS, and the cellular thermal shift assay (CETSA) was performed to evaluate the effect of SalB on the thermal stability of the PAICS protein. Western blot (WB) was used to detect the effects of SalB on PAICS and EMT-related proteins (E-cadherin, N-cadherin, Vimentin, Snail, and Slug). A functional rescue assay was conducted by PAICS overexpression via plasmid transfection. ResultsCompared with the control group, SalB inhibited A549 cell viability in a dose-dependent manner (P<0.05), and the effective concentrations (≤300 μmol·L-1) showed no significant cytotoxicity in BEAS-2B cells. Within this concentration range, SalB significantly inhibited A549 cell proliferation, migration, and invasion, and induced G0/G1 phase arrest and apoptosis (P<0.05). Transcriptomic analysis showed that SalB significantly downregulated PAICS expression, and its functions were enriched in cell proliferation and EMT. Bioinformatic analysis indicated that PAICS is highly expressed in lung adenocarcinoma and is associated with poor prognosis (P<0.01). Molecular docking showed that SalB has strong binding ability to PAICS (binding energy -9.1 kcal·mol-1. CETSA results showed that SalB significantly increased the thermal stability of the PAICS protein (P<0.05). WB results showed that, compared with the control group, SalB dose-dependently downregulated PAICS expression, upregulated E-cadherin, and downregulated N-cadherin, Vimentin, Snail, and Slug (P<0.05). Functional rescue experiments showed that, compared with the empty vector group, PAICS overexpression significantly enhanced A549 cell proliferation, migration, and invasion, promoted cell cycle progression, and inhibited apoptosis (P<0.05). Meanwhile, compared with the empty vector + SalB-H group, PAICS overexpression partially reversed the inhibitory effects of SalB on malignant phenotypes and EMT-related proteins (N-cadherin, Vimentin, Snail, and Slug), and downregulated E-cadherin expression (P<0.05,P<0.01), indicating that PAICS is a key functional target mediating the antitumor effects of SalB. ConclusionSalB effectively inhibits EMT progression and cell cycle progression in A549 cells by downregulating PAICS expression, thereby exerting anti-NSCLC effects. This study not only reveals that PAICS is a key functional target through which SalB regulates EMT, but also provides experimental evidence supporting SalB as a potential candidate drug for inhibiting NSCLC metastasis.

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