1.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.
2.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.
3.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.
4.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.
5.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.
6.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.
7.Research on trust enhancement pathway of essential public health services from the perspective of health risk governance
Yu ZHANG ; Rui-ke YOU ; Yang ZHAO ; Hai-ming FAN ; Yan-qing MIAO
Chinese Journal of Health Policy 2025;18(11):25-30
The essential public health services is an important component of China's health risk governance system.It possesses both institutional and emotional attributes and addresses potential risk factors in health risk governance by forming a rational pathway and an emotional pathway:essential public health services guide-trust in government enhancement-improve health risk governance capacity.The rational pathway strengthens calculative trust through institutional reinforcement mechanisms,fostering the public's cognitive trust in government departments.The emotional pathway follows the principle of satisfaction,strengthening non-calculative trust through emotional communication and cultivating the public's emotional trust in government departments.By reinforcing both cognitive and emotional trust among the public,essential public health services improved the level of health information reserves and the guidance of medical service order,thereby improving health risk governance capacity.
8.The correlation of serum hypoxia-inducible factor-1α level with cerebral microbleeds and cognitive impairment
Qing LI ; Xiaowen ZHAO ; Jing REN ; Miao YU ; Hanfang CUI ; Fangyuan DING ; Hao LIU ; Qiong LI ; Fan WANG ; Qing LI ; Xiyan CHEN ; Chengbiao LU ; Shaomin LI ; Jianhua ZHAO
Journal of Capital Medical University 2025;46(2):216-227
Objective To explore the correlation between serum hypoxia-inducible factor-1α(HIF-1α)levels and cerebral microbleeds(CMBs)and cognitive impairment and to assess the predictive value of HIF-1α for CSVD-related cognitive impairment.Methods A total of 104 patients with CSVD who attended the Department of Neurology,First Affiliated Hospital of Xinxiang Medical University from June 2022 to November 2023 were enrolled.All enrolled patients were subjected to basic statistics,cranial nuclear magnetic resonance examination,cognitive function assessment,and serum HIF-1α test,and the number and location of CMBs were counted.Based on the above data the enrolled patients were grouped.The correlation between HIF-1α and cognitive function and CMBs was studied the influencing factors of CMBs and cognitive impairment were analyzed,and the predictive value of HIF-1α on the occurrence of cognitive impairment was evaluated.Results There were statistically significant differences in HIF-1α levels and cognitive function among different CMBs groups.Serum HIF-1α levels were significantly negatively correlated with overall cognitive function,visuospatial and executive function,attention,and delayed recall,and serum HIF-1α was positively correlated with the number of CMBs.HIF-1α may be a risk factor for CMBs and cognitive impairment associated with CSVD,and serum HIF-1α has potential in predict the cognitive impairment caused by CSVD.Conclusion Serum levels of HIF-1α were associated with the number of CMB and CSVD-related cognitive impairment,and serum levels of HIF-1α may have a predictive value for CSVD-related cognitive impairment.
9.Study on mechanism of Vaccarin improving EMT in renal fibrosis model mice through regulating STAT3
Meng-jiao CUI ; Qi-ming XU ; Yu CAO ; Ye-nan FAN ; Yi-qing YANG ; Guang-bo GE ; Wen-rui LIU ; Jian-rao LU ; Jing HU
Chinese Pharmacological Bulletin 2025;41(4):745-752
Aim To investigate the protective effect of Vaccarin(Va)on epithelial-mesenchymal transition(EMT)in renal fibrosis model mice through regulating STAT3,and the underlying mechanism.Methods Left ureter ligation was used to establish a mouse model of unilateral ureteral obstruction(UUO);human kid-ney tubular epithelial(HK2)cells were induced to differentiate by transforming growth factor-β(TGF-β)in vitro.HE and Masson staining were used to observe the morphological changes of renal tissue;kits were used to detect the levels of BUN,Cr,IL-1β and IL-7 in mouse serum;CCK-8 was used to detect the effect of Va on the viability of HK2 cells;RT-PCR was used to detect the levels of inflammatory factors in HK2 cells;Western blot was used to detect the expression of STAT3,p-STAT3,E-cadherin,and α-SMA proteins in renal tissue and HK2 cells;to further investigate the regulation of Va on STAT3,JAK/STAT3 pathway acti-vator RO8191 was used to treat TGF-β-induced HK2 cells,and functional loss was detected.Results Va improved the pathological damage in UUO mice,inhibi-ted the levels of BUN,Cr and inflammatory factors;Va inhibited the phosphorylation of STAT3,upregulated E-cadherin,and downregulated α-SMA protein expres-sion;RO8191 counteracted the inhibitory effect of Va on the phosphorylation of STAT3.Conclusions Va inhibits the phosphorylation of STAT3 and the release of inflammatory factors,improves EMT,thus exerting an anti-renal fibrosis effect.
10.Establishment of a double fluorescence RT-LAMP method for detection of chicken astrovirus and avian nephritis virus
Junke ZHAO ; Dan YU ; Wenqiao YIN ; Yanfang ZHANG ; Zhiqin XIE ; Qing FAN ; Huaying YU ; Zhixun XIE
Chinese Journal of Veterinary Science 2025;45(2):204-211,218
To establish a double fluorescent RT-LAMP that can distinguish between chicken astro-virus(CAstV)and avian nephritis virus(ANV),two sets of specific primers and probes labeled with fluorescent groups were designed by comparing the conserved sequences of CAstV ORF1b gene and ANV ORF1b gene downloaded from GenBank.The CAstV probe was labeled with CY3 fluorophore at the 3'end and the quencher BHQ2 at the 5'end.The ANV probe was labeled with CY3 fluorophore at the 3'end and the quencher BHQ2 at the 5'end.The reaction system of the method was optimized,and specificity,repeatability,interference,sensitivity,and clinical sample detection were performed.The results were compared with RT-qPCR and RT-PCR to verify the ef-fectiveness of the method.The experimental results showed that the established double fluorescence RT-LAMP method could complete the reaction within 60 min,and the optimal reac-tion temperature was 65 ℃.This method only detects ANV and CAstV,with no cross-reactivity to other common avian pathogens.The minimum detection limit of CAstV was 1.4 ×10 2 copies/μL,and the minimum detection limit of ANV was 1.5×10 2 copies/μL.The interference and reproduc-ibility tests were good.Compared with RT-qPCR,the coincidence rates of CAstV and ANV were 97.97%and 98.85%,respectively.In conclusion,the double fluorescence RT-LAMP method estab-lished in this study has the characteristics of rapidity,accuracy,good specificity,high sensitivity and good reproducibility,which is suitable for clinical diagnosis and provides technical support for the epidemiological investigation of CAstV and ANV.

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