1.Research status and prospects of treatment for malignant pleural mesothelioma
Kaile ZHAO ; Lei WANG ; Jianxiong GENG ; Chengwei CUI ; Yan YU
China Oncology 2025;35(3):326-332
Malignant pleural mesothelioma(MPM)is strongly associated with a history of asbestos exposure and is characterized by high malignancy,high mortality,and poor prognosis.Current treatments for MPM are limited and generally suboptimal,resulting in a median overall survival(OS)of approximately one year for MPM patients.However,advancements in treatment options,including surgery,radiotherapy,chemotherapy,immunotherapy and targeted therapy,have brought new hope to patients with MPM.For early-stage MPM patients categorized under the TNM staging system,surgical treatment is feasible and can improve survival rates and quality of life.However,there is still debate regarding the optimal surgical approach for MPM.In addition to surgery,radiotherapy plays a vital role in MPM treatment.It is often used as prophylactic treatment or for alleviating local symptoms in advanced stages.Radiotherapy can also serve as neoadjuvant or adjuvant therapy in surgical contexts.For patients experiencing local progression or isolated distant metastases after systemic treatment,radiotherapy is a viable option.The advent of advanced radiotherapy techniques,such as intensity-modulated radiotherapy(IMRT)and volumetric intensity-modulated arc therapy(VMAT),has significantly improved the precision and efficacy of radiotherapy while minimizing damage to healthy tissues.Furthermore,brachytherapy can relieve pain or act as a localized supplemental therapy.Chemotherapy remains the standard treatment for MPM.The combination of pemetrexed and platinum-based drugs is widely applied as first-line therapy and has been shown to significantly extend survival.However,commonly used second-line regimens often yield suboptimal results.In recent years,immunotherapy has developed rapidly.Dual immunotherapy with nivolumab and ipilimumab has demonstrated impressive clinical efficacy and safety.The combination of immunotherapy and chemotherapy has also notably extended patients'median survival.Multiple clinical trials have confirmed that this combination therapy benefits patients.Currently available targeted therapies for MPM primarily focus on anti-angiogenesis.Bevacizumab combined with chemotherapy has established its position as a first-line treatment.Research on ramucirumab and apatinib suggests that these drugs have certain efficacy and safety profiles.Beyond conventional treatment options,the UV1 cancer vaccine combined with dual immunotherapy offers new hope for patients.Chimeric antigen receptor T(CAR-T)cell therapy is an emerging treatment method being investigated in MPM patients,with phase Ⅰ clinical trials demonstrating good antitumor effects.Additionally,some antibody-drug conjugates are becoming therapeutic options for MPM through precise targeting.Tumor treating fields combined with chemotherapy has also shown efficacy in extending survival.Despite the increasing variety of treatment options for MPM,its diagnosis and treatment still face numerous challenges,including difficulties in early detection,treatment resistance,and a lack of large-scale evidence-based clinical studies.Future research should focus on improving early diagnosis rates,developing new treatment strategies,overcoming resistance,and advancing personalized therapy.Strengthening the integration of basic research and clinical trials will also be essential.Through multidisciplinary collaboration and continuous innovation,it is hoped that more effective and safer treatment options will become available,ultimately improving the prognosis of MPM patients.
2.Repair of femoral condyle defects using mesoporous bioactive glass grafted with bone morphogenetic protein 2 osteogenic peptide inspired by mussel
Lei YU ; Wei ZHANG ; Yi QIN ; Gaoran GE ; Jiaxiang BAI ; Dechun GENG
Chinese Journal of Tissue Engineering Research 2025;29(22):4629-4638
BACKGROUND:Bone morphogenetic protein 2 is vital in embryonic development,bone formation,and regeneration,but its high-dose application is linked to cancer.Bone morphogenetic protein 2 osteogenic peptide L20 reduces adverse effects like cancer and boosts bone tissue regeneration.OBJECTIVE:To graft bone morphogenetic protein 2 active peptide segments onto mesopores and surfaces through a peptide mimicry strategy inspired by oysters,and explore its impact on osteogenic properties of tissue-engineered bone.METHODS:(1)Mesoporous bioactive glass was synthesized using a template method.Bone morphogenetic protein 2 osteogenic peptide L20 was loaded onto mesoporous bioactive glass using a one-step synthesis method to characterize the morphology and in vitro sustained release properties of mesoporous active glass nanoparticles loaded with bone morphogenetic protein 2 osteogenic active peptide L20.(2)Bone marrow mesenchymal stem cells were isolated and extracted from SD rats.After two generations,they were co-cultured with PBS(blank group),mesoporous bioactive glass nanoparticles(control group),and mesoporous bioactive glass nanoparticles loaded with bone morphogenetic protein 2 osteogenic active peptide L20(experimental group).Cell live/dead fluorescence staining and CCK-8 assay were used to detect cytotoxicity and cell proliferation.Scanning electron microscopy was used to observe cell adhesion.After osteogenic induction and differentiation,alkaline phosphatase staining,Alizarin red S staining,and osteogenesis-related gene expression were detected.(3)Fifteen SD rats were selected to establish bilateral femoral condyle defect models and divided into three groups using a random number table method:the blank group(n=5)was not implanted with any material;the control group(n=5)was implanted with mesoporous bioactive glass nanoparticles,and the experimental group(n=5)was implanted with mesoporous bioactive glass nanoparticles loaded with bone morphogenetic protein 2 osteogenic active peptide L20.Eight weeks after surgery,femoral Micro-CT scanning and tissue morphology observation were performed.RESULTS AND CONCLUSION:(1)Scanning electron microscopy showed that the mesoporous bioactive glass nanoparticles loaded with bone morphogenetic protein 2 osteogenic active peptide L20 were spherical and monodisperse particles.Transmission electron microscopy showed their porous structure with an average particle size of(268.10±0.58)nm,which could release L20 in vitro.(2)Mesoporous bioglass nanoparticles loaded with bone morphogenetic protein 2 osteogenic active peptide L20 were non-cytotoxic and could promote the proliferation and adhesion of bone marrow mesenchymal stem cells.Compared with the blank group and the control group,the alkaline phosphatase activity and extracellular matrix mineralization capacity of the experimental group were increased(P<0.05),and the mRNA expression levels of alkaline phosphatase,Runx2,and osteocalcin were increased(P<0.05).(3)The results of femoral Micro-CT scanning showed that compared with the blank group and the control group,the new bone mass and bone density of the experimental group were increased(P<0.05).The results of hematoxylin-eosin and Masson staining showed that compared with the blank group and the control group,the new bone formation and collagen fibers of the experimental group were increased.(4)These findings indicate that mesoporous bioactive glass loaded with bone morphogenetic protein 2 active peptide L20 exhibits excellent biocompatibility and in vitro and in vivo osteogenic properties,promoting regeneration and repair of SD rat femoral condyle defects.
3.Repair of femoral condyle defects using mesoporous bioactive glass grafted with bone morphogenetic protein 2 osteogenic peptide inspired by mussel
Lei YU ; Wei ZHANG ; Yi QIN ; Gaoran GE ; Jiaxiang BAI ; Dechun GENG
Chinese Journal of Tissue Engineering Research 2025;29(22):4629-4638
BACKGROUND:Bone morphogenetic protein 2 is vital in embryonic development,bone formation,and regeneration,but its high-dose application is linked to cancer.Bone morphogenetic protein 2 osteogenic peptide L20 reduces adverse effects like cancer and boosts bone tissue regeneration.OBJECTIVE:To graft bone morphogenetic protein 2 active peptide segments onto mesopores and surfaces through a peptide mimicry strategy inspired by oysters,and explore its impact on osteogenic properties of tissue-engineered bone.METHODS:(1)Mesoporous bioactive glass was synthesized using a template method.Bone morphogenetic protein 2 osteogenic peptide L20 was loaded onto mesoporous bioactive glass using a one-step synthesis method to characterize the morphology and in vitro sustained release properties of mesoporous active glass nanoparticles loaded with bone morphogenetic protein 2 osteogenic active peptide L20.(2)Bone marrow mesenchymal stem cells were isolated and extracted from SD rats.After two generations,they were co-cultured with PBS(blank group),mesoporous bioactive glass nanoparticles(control group),and mesoporous bioactive glass nanoparticles loaded with bone morphogenetic protein 2 osteogenic active peptide L20(experimental group).Cell live/dead fluorescence staining and CCK-8 assay were used to detect cytotoxicity and cell proliferation.Scanning electron microscopy was used to observe cell adhesion.After osteogenic induction and differentiation,alkaline phosphatase staining,Alizarin red S staining,and osteogenesis-related gene expression were detected.(3)Fifteen SD rats were selected to establish bilateral femoral condyle defect models and divided into three groups using a random number table method:the blank group(n=5)was not implanted with any material;the control group(n=5)was implanted with mesoporous bioactive glass nanoparticles,and the experimental group(n=5)was implanted with mesoporous bioactive glass nanoparticles loaded with bone morphogenetic protein 2 osteogenic active peptide L20.Eight weeks after surgery,femoral Micro-CT scanning and tissue morphology observation were performed.RESULTS AND CONCLUSION:(1)Scanning electron microscopy showed that the mesoporous bioactive glass nanoparticles loaded with bone morphogenetic protein 2 osteogenic active peptide L20 were spherical and monodisperse particles.Transmission electron microscopy showed their porous structure with an average particle size of(268.10±0.58)nm,which could release L20 in vitro.(2)Mesoporous bioglass nanoparticles loaded with bone morphogenetic protein 2 osteogenic active peptide L20 were non-cytotoxic and could promote the proliferation and adhesion of bone marrow mesenchymal stem cells.Compared with the blank group and the control group,the alkaline phosphatase activity and extracellular matrix mineralization capacity of the experimental group were increased(P<0.05),and the mRNA expression levels of alkaline phosphatase,Runx2,and osteocalcin were increased(P<0.05).(3)The results of femoral Micro-CT scanning showed that compared with the blank group and the control group,the new bone mass and bone density of the experimental group were increased(P<0.05).The results of hematoxylin-eosin and Masson staining showed that compared with the blank group and the control group,the new bone formation and collagen fibers of the experimental group were increased.(4)These findings indicate that mesoporous bioactive glass loaded with bone morphogenetic protein 2 active peptide L20 exhibits excellent biocompatibility and in vitro and in vivo osteogenic properties,promoting regeneration and repair of SD rat femoral condyle defects.
4.Pharmacological effects and mechanisms of Xuanfei Baidu Decoction in the treatment of viral pneumonia
Jingsheng ZHANG ; Bo PANG ; Qiyue SUN ; Jing SUN ; Shan CAO ; Yingli XU ; Yu ZHANG ; Xinqi DENG ; Shanshan GUO ; Lei BAO ; Zihan GENG ; Shuran LI ; Ronghua ZHAO ; Daohan WANG ; Xiaolan CUI ; Bin QU ; Yu WANG
Science of Traditional Chinese Medicine 2025;3(2):145-157
Objective: This study aims to investigate the therapeutic effects and underlying mechanisms of Xuanfei Baidu Decoction (XFBD) in a mouse model of dampness-heat toxin pneumonia. By exploring how XFBD exerts its effects, we seek to deepen our understanding of its role in treating pulmonary diseases and to address the current knowledge gap regarding its mechanisms of action, thereby supporting its clinical application. Methods: Ultra-high-performance liquid chromatography and high-resolution mass spectrometry (HRMS) were employed to analyze the chemical constituents of XFBD. The protective effects of XFBD were evaluated using a dampness-heat toxin-induced mouse model, established through dampness-heat exposure and HCoV-229E infection. XFBD was administered orally, followed by assessments including lung index measurement, micro-CT imaging, viral load quantification, cytokine analysis, and histological evaluation via hematoxylin-eosin staining. Proteomics and single-cell transcriptomic analyses were conducted to explore the potential mechanisms underlying XFBD’s pharmacological effects. A cellular model of HCoV-229E infection was developed to investigate changes in the cAMP/PKA signaling pathway. Molecular docking and surface plasmon resonance (SPR) experiments confirmed the strong binding affinity between key XFBD components and PKA. Finally, PKA activators and inhibitors were applied in vitro to validate these mechanistic findings. Results: In vivo studies demonstrated that XFBD significantly reduced the lung index, improved the structural integrity of lung and tongue tissues, and decreased levels of proinflammatory mediators, including IL-6, IL-8, and TNF-α. Proteomic and single-cell transcriptomic analyses showed that the differentially expressed proteins after XFBD treatment were primarily associated with inflammatory responses and immune regulation. The cAMP/PKA signaling pathway was identified as a key mechanism underlying these therapeutic effects. Notably, Western blot, ELISA, molecular docking, and SPR analyses confirmed that XFBD elevated cAMP levels and p-PKA expression, thereby activating the cAMP/PKA signaling pathway in vitro. Conclusion: This study demonstrated that XFBD significantly alleviates symptoms in mice with dampness-heat toxin pneumonia. Its therapeutic effects are mediated, at least in part, through activation of the cAMP/PKA signaling pathway. These findings provide compelling evidence that XFBD is an effective herbal remedy against HCoV-229E infection.
5.Correlation analysis between stenosis characteristics and trans-stenotic pressure gradient using a 3D-printed hemodynamic simulation system for cerebral venous sinuses
Jia-Hao ZHANG ; Lei GENG ; Zhi-Tao XIAO ; Xing CHEN ; Zhe JI ; Xiang-Yu CAO
Medical Journal of Chinese People's Liberation Army 2025;50(11):1426-1432
Objective To analyze the relationship between different degrees of cerebral venous sinus stenosis and the trans-stenotic pressure gradient using a 3D-printed hemodynamic simulation system for cerebral venous sinuses.Methods Based on the double elastic cavity model,a complete morphological model of the superior sagittal sinus,transverse sinus,and sigmoid sinuses was constructed using 3D printing technology.An in vitro hemodynamic simulation system incorporating pulsatile blood flow was established to simulate the hemodynamic environment of cerebral venous sinus stenosis.Using this system,both unilateral dominant drainage and bilateral balanced drainage were simulated.The degree of stenosis and the pressure upstream and downstream of the stenosis were measured.The pressure difference and pressure ratio were calculated to analyze the correlation between stenosis degree and the trans-stenotic pressure gradient.Results In the unilateral dominant drainage model,as the stenosis severity increased,the upstream pressure increased,whereas the downstream pressure remained relatively stable,leading to an increased pressure gradient between the two ends.The regression equation for stenosis degree(X)and pressure gradient(pressure difference ΔP)was:YΔP=1.962X-1.417(R=0.867,R2=0.753,P<0.001).In the bilateral balanced drainage model of cerebral venous sinuses,when the stenosis degree on one side of the model increased,the pressure gradient between the two ends changed slightly and eventually reached a stable state.The regression equation between X and ΔP was:YΔP=0.62X+1.047(R=0.98,R2=0.96,P<0.001).Conclusions Stenosis in cerebral venous sinuses with unilateral dominant drainage has a more significant impact on the pressure gradient,while unilateral stenosis in bilateral cerebral venous sinuses with balanced drainage has a smaller impact on the pressure gradient.This result suggests that for bilateral venous sinus stenosis,stent implantation can be prioritized in one side of the cerebral venous sinuses.
6.Expert consensus on evaluation index system construction for new traditional Chinese medicine(TCM) from TCM clinical practice in medical institutions.
Li LIU ; Lei ZHANG ; Wei-An YUAN ; Zhong-Qi YANG ; Jun-Hua ZHANG ; Bao-He WANG ; Si-Yuan HU ; Zu-Guang YE ; Ling HAN ; Yue-Hua ZHOU ; Zi-Feng YANG ; Rui GAO ; Ming YANG ; Ting WANG ; Jie-Lai XIA ; Shi-Shan YU ; Xiao-Hui FAN ; Hua HUA ; Jia HE ; Yin LU ; Zhong WANG ; Jin-Hui DOU ; Geng LI ; Yu DONG ; Hao YU ; Li-Ping QU ; Jian-Yuan TANG
China Journal of Chinese Materia Medica 2025;50(12):3474-3482
Medical institutions, with their clinical practice foundation and abundant human use experience data, have become important carriers for the inheritance and innovation of traditional Chinese medicine(TCM) and the "cradles" of the preparation of new TCM. To effectively promote the transformation of new TCM originating from the TCM clinical practice in medical institutions and establish an effective evaluation index system for the transformation of new TCM conforming to the characteristics of TCM, consensus experts adopted the literature research, questionnaire survey, Delphi method, etc. By focusing on the policy and technical evaluation of new TCM originating from the TCM clinical practice in medical institutions, a comprehensive evaluation from the dimensions of drug safety, efficacy, feasibility, and characteristic advantages was conducted, thus forming a comprehensive evaluation system with four primary indicators and 37 secondary indicators. The expert consensus reached aims to encourage medical institutions at all levels to continuously improve the high-quality research and development and transformation of new TCM originating from the TCM clinical practice in medical institutions and targeted at clinical needs, so as to provide a decision-making basis for the preparation, selection, cultivation, and transformation of new TCM for medical institutions, improve the development efficiency of new TCM, and precisely respond to the public medication needs.
Medicine, Chinese Traditional/standards*
;
Humans
;
Consensus
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Drugs, Chinese Herbal/therapeutic use*
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Surveys and Questionnaires
7.Research status and prospects of treatment for malignant pleural mesothelioma
Kaile ZHAO ; Lei WANG ; Jianxiong GENG ; Chengwei CUI ; Yan YU
China Oncology 2025;35(3):326-332
Malignant pleural mesothelioma(MPM)is strongly associated with a history of asbestos exposure and is characterized by high malignancy,high mortality,and poor prognosis.Current treatments for MPM are limited and generally suboptimal,resulting in a median overall survival(OS)of approximately one year for MPM patients.However,advancements in treatment options,including surgery,radiotherapy,chemotherapy,immunotherapy and targeted therapy,have brought new hope to patients with MPM.For early-stage MPM patients categorized under the TNM staging system,surgical treatment is feasible and can improve survival rates and quality of life.However,there is still debate regarding the optimal surgical approach for MPM.In addition to surgery,radiotherapy plays a vital role in MPM treatment.It is often used as prophylactic treatment or for alleviating local symptoms in advanced stages.Radiotherapy can also serve as neoadjuvant or adjuvant therapy in surgical contexts.For patients experiencing local progression or isolated distant metastases after systemic treatment,radiotherapy is a viable option.The advent of advanced radiotherapy techniques,such as intensity-modulated radiotherapy(IMRT)and volumetric intensity-modulated arc therapy(VMAT),has significantly improved the precision and efficacy of radiotherapy while minimizing damage to healthy tissues.Furthermore,brachytherapy can relieve pain or act as a localized supplemental therapy.Chemotherapy remains the standard treatment for MPM.The combination of pemetrexed and platinum-based drugs is widely applied as first-line therapy and has been shown to significantly extend survival.However,commonly used second-line regimens often yield suboptimal results.In recent years,immunotherapy has developed rapidly.Dual immunotherapy with nivolumab and ipilimumab has demonstrated impressive clinical efficacy and safety.The combination of immunotherapy and chemotherapy has also notably extended patients'median survival.Multiple clinical trials have confirmed that this combination therapy benefits patients.Currently available targeted therapies for MPM primarily focus on anti-angiogenesis.Bevacizumab combined with chemotherapy has established its position as a first-line treatment.Research on ramucirumab and apatinib suggests that these drugs have certain efficacy and safety profiles.Beyond conventional treatment options,the UV1 cancer vaccine combined with dual immunotherapy offers new hope for patients.Chimeric antigen receptor T(CAR-T)cell therapy is an emerging treatment method being investigated in MPM patients,with phase Ⅰ clinical trials demonstrating good antitumor effects.Additionally,some antibody-drug conjugates are becoming therapeutic options for MPM through precise targeting.Tumor treating fields combined with chemotherapy has also shown efficacy in extending survival.Despite the increasing variety of treatment options for MPM,its diagnosis and treatment still face numerous challenges,including difficulties in early detection,treatment resistance,and a lack of large-scale evidence-based clinical studies.Future research should focus on improving early diagnosis rates,developing new treatment strategies,overcoming resistance,and advancing personalized therapy.Strengthening the integration of basic research and clinical trials will also be essential.Through multidisciplinary collaboration and continuous innovation,it is hoped that more effective and safer treatment options will become available,ultimately improving the prognosis of MPM patients.
8. Mechanism of Fufang Congrong Yizhi Capsules in treatment of mild cognitive impairment based on network pharmacology
Qin HAN ; Xiao-Yu XU ; Yi-Fei GENG ; Xiao-Bo SUN ; Yun LUO ; Jing-Jing LIU
Chinese Pharmacological Bulletin 2024;40(2):334-343
Aim To predict the mechanism of Fufang Congrong Yizhi Capsules (FCYC) in the treatment of mild cognitive impairment (MCI) by network pharmacology method, and further validate it in combination with cellular experiments. Methods TCMSP, Gene-Cards, OMIM and TTD databases, Chinese Pharmacopoeia and related literature were used to screen the active ingredients of FCYC and the targets of MCI treatment. The TCM-compound-target-disease network and PPI of intersection targets were constructed, and the GO and KEGG analysis were performed by the Ehamb bioinformation platform. GO and KEGG analysis were performed through Yihanbo biological information platform. Cell model of MCI was established by PC-12 injury induced by Aβ
9.Host Targets Interacting with Influenza Virus NP and Mechanism of Gardenia Jasminoides Iridoid Glycoside Against Influenza Virus
Xiaowei YANG ; Lei BAO ; Yu ZHANG ; Xian LIU ; Zihan GENG ; Shuran LI ; Jingsheng ZHANG ; Xiaolan CUI ; Shanshan GUO
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(13):60-66
ObjectiveTo explore host factors interacting with influenza virus nucleoprotein (NP) and study their effects on influenza virus replication, as well as the mechanism of gardenia jasminoides iridoid glycoside (IGE) in inhibiting influenza virus. MethodA yeast two-hybrid system was utilized to screen host factors that interacted with influenza virus NP. Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD), glucosamine-6-phosphate deaminase 1 (GNPDA1), poly(rC)-binding protein 1 (PCBP1), and protein inhibitor of activated signal transducer and activator of transcription (STAT) protein 1 (PIAS1) were validated by immunoprecipitation assay. The effects of PIAS1 and HNRNPD on influenza virus replication were compared by a dual luciferase assay, and the effects of IGE on influenza virus replication were examined in the presence of transfected ribonucleoprotein (RNP) and knockdown of PIAS1. ICR mice were randomly divided into a normal group, model group, oseltamivir phosphate group, and high, medium, and low dose IGE groups, with 10 mice in each group. In addition to the normal group, each group was infected with the influenza A virus FM1 strain by nasal drip to establish a viral pneumonia model. The high, medium, and low dose IGE groups were given drugs of 50, 25, and 12.5 mg∙kg-1 by gavage, and the oseltamivir phosphate group was given the drug of 27.5 mg∙kg-1 by gavage. Equal amounts of distilled water were instilled in the normal and model groups for four consecutive days. Later, protein expression of PIAS1, NP, phosphorylated (p)-STAT3, STAT3, p-STAT1, and STAT1 were detected in the lung tissue by Western blot. ResultIn yeast two-hybrid assays, 16 potential host targets interacting with influenza virus NP were identified. Immunoprecipitation experiments revealed that HNRNPD and PIAS1 could interact with influenza virus NP. The dual luciferase reporter assays found that both PIAS1 knockdown and overexpression significantly affected IAV RNP activity (P<0.05, P<0.01), and the effect of HNRNPD on IAV RNP was not significant. Both high and low dose IGE groups reduced influenza virus replication (P<0.05) and reversed the increase in influenza virus replication caused by the knockdown of PIAS1(P<0.05, P<0.01). The expressions of PIAS1, NP, p-STAT3, p-STAT1, and STAT1 in the lung tissue of infected mice were reduced to different degrees in each IGE group (P<0.05, P<0.01). ConclusionPIAS1 interacts with influenza virus NP and is able to inhibit influenza virus replication. IGE may exert antiviral effects by inhibiting the activity of IAV RNP through the PIAS1/STAT1 pathway.
10.Effect of Influenza A Virus on BEAS-2B in Human Lung Epithelial Cells and Intervention Effect of Shufeng Jiedu Capsule-containing Serum
Shan CAO ; Zihan GENG ; Lei BAO ; Yingli XU ; Bo PANG ; Jingsheng ZHANG ; Yu ZHANG ; Mengping CHEN ; Yaxin WANG ; Ronghua ZHAO ; Shanshan GUO ; Xiaolan CUI
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(23):90-97
ObjectiveTo observe the effect of Shufeng Jiedu capsule (SFJD)-containing serum on human lung epithelial cells infected by influenza A virus, and investigate the protective effect of the drug on the cells and the potential antiviral effect. MethodThe SFJD-containing serum was prepared and used to treat human lung epithelial cells (BEAS-2B) cultured in vitro. The viability of cells treated with different concentrations of SFJD-containing serum was measured by the cell counting kit-8 (CCK-8), and the optimal concentration of SFJD-containing serum was screened for subsequent experiments. BEAS-2B cells were classified into normal control, virus infection, and SFJD-containing serum groups, and the CCK-8 method was used to detect the survival rate of BEAS-2B cells after virus infection and drug administration. The expression of influenza virus nucleic acid in the cells of each group was determined, and the apoptosis of cells in different groups was observed by fluorescence microscopy. Real-time PCR was employed to determine the mRNA levels of influenza virus nucleoprotein (NP), Toll-like receptor 4 (TLR4), and myeloid differentiation primary response gene 88 (MyD88) in each group of cells. The immunofluorescence assay was used to detect the fluorescence intensities of TLR4, MyD88, and phosphorylated nuclear factor-κB (p-NF-κB) in lung epithelial cells. ResultCompared with that in the control group (normal serum), the cell survival rates in the blank serum and the SFJD-containing serum (5%, 10%, and 20%) groups were 100.00%±0.00%, 89.05%±4.80%, 87.13%±5.90%, 93.83%±6.03%, and 99.33%±3.39%, respectively (P<0.01). The SFJD-containing serum of 20% was selected as the optimal treatment for subsequent experiments. Compared with the normal control group, the virus infection group showed reduced cell survival rate (P<0.01), and the reduction was increased by the SFJD-containing serum (P<0.01). Compared with the virus infection group, SFJD-containing serum reduced the virus load (P<0.01) to decrease apoptosis. Compared with the normal control group, the virus infection group showed up-regulated mRNA levels of NP, TLR4, and MyD88 (P<0.01), and the up-regulation was down-regulated by the SFJD-containing serum (P<0.05, P<0.01). The fluorescence intensities of TLR4, MyD88, and p-NF-κB proteins in the cells increased after virus infection compared with those in the normal control (P<0.05, P<0.01), and they were decreased after administration with the SFJD-containing serum (P<0.05). ConclusionThe SFJD-containing serum can inhibit influenza virus in vitro by increasing the survival rate, reducing the apoptosis, and down-regulating the protein levels of TLR4, MyD88, and p-NF-κB in BEAS-2B cells.

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