1.Mechanisms of Shenqi Wenfei Prescription in Intervening in Chronic Obstructive Pulmonary Disease in Rats Based on ROS/TXNIP/NLRP3 Signaling Pathway
Di WU ; Mengyao SHI ; Lu ZHANG ; Tong LIU ; Jiabing TONG ; Cheng YANG ; Zegeng LI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):78-87
ObjectiveTo investigate the effects and underlying mechanisms of Shenqi Wenfei prescription (SQWF) on chronic obstructive pulmonary disease (COPD). MethodsA rat model of COPD with lung Qi deficiency was established using lipopolysaccharide (LPS) combined with cigarette smoke. Forty-eight SD rats were randomly divided into a blank group, a model group, low-, medium-, and high-dose SQWF groups (2.835, 5.67, 11.34 g·kg-1), and a Yupingfeng group (1.35 g·kg-1). Drug administration began on day 29 after modeling and continued for 2 weeks. The general condition of the rats was observed, and the lung function in each group was assessed. Hematoxylin-eosin (HE) staining was used to observe pathological changes in lung tissue. The proportion of inflammatory cells in bronchoalveolar lavage fluid (BALF) was measured. Apoptosis in lung tissue was examined by terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) staining. The release level of lactate dehydrogenase (LDH) in BALF was detected by a microplate assay. Reactive oxygen species (ROS) levels in lung tissue were detected using fluorescent probes. The levels of malondialdehyde (MDA), total superoxide dismutase (SOD), and reduced glutathione (GSH) in BALF were measured by biochemical methods. Ultrastructural changes in lung cells were observed via transmission electron microscopy. Double immunofluorescence staining was performed to detect the expression of thioredoxin-interacting protein (TXNIP) and nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3) in lung tissue. Western blot analysis was used to detect the protein expression of TXNIP, NLRP3, apoptosis-associated speck-like protein containing a CARD (ASC), cysteinyl aspartate-specific protease-1 (Caspase-1), Caspase-1 p20, gasdermin D (GSDMD), GSDMD N-terminal active fragment (GSDMD-N), interleukin-1β (IL-1β), and IL-18 in lung tissue. Serum IL-1β and IL-18 levels were measured by ELISA. ResultsCompared with the blank group, the model group showed lassitude, fatigue, tachypnea, and audible phlegm sounds, and lung function significantly declined (P0.01). Pulmonary emphysema and inflammatory cell infiltration were obvious. The level of inflammatory cells in BALF increased significantly (P0.05). The number of TUNEL-positive cells increased (P0.01). Levels of LDH, ROS, and MDA in BALF increased significantly (P0.01), while GSH and SOD activities decreased significantly (P0.01). Lung tissue cells showed irregular morphology, swollen mitochondria, disrupted cell membranes, and abundant vesicles, i.e., pyroptotic bodies. Protein levels of TXNIP, NLRP3, ASC, Caspase-1, Caspase-1 p20, GSDMD, GSDMD-N, IL-1β, and IL-18 in lung tissue were significantly elevated (P0.01), and serum IL-1β and IL-18 levels also increased significantly (P0.01). Compared with the model group, each medication group showed alleviation of qi deficiency symptoms and improved lung function (P0.01). Pulmonary emphysema and inflammatory cell infiltration were reduced. Inflammatory cell levels decreased (P0.05). The number of TUNEL-positive cells decreased significantly (P0.01). Levels of LDH, ROS, and MDA decreased significantly (P0.05), while GSH and SOD activities significantly increased (P0.01). Morphological and structural damage in lung tissue was improved to varying degrees. Protein levels of TXNIP, NLRP3, ASC, Caspase-1, Caspase-1 p20, GSDMD, GSDMD-N, IL-1β, and IL-18 in lung tissue significantly decreased (P0.01), and serum IL-1β and IL-18 levels also decreased significantly (P0.05). ConclusionSQWF can improve lung function and alleviate inflammatory responses in COPD rats. Its mechanism may be related to regulating the ROS/TXNIP/NLRP3 pathway and inhibiting pyroptosis.
2.Mechanisms of Shenqi Wenfei Prescription in Intervening in Chronic Obstructive Pulmonary Disease in Rats Based on ROS/TXNIP/NLRP3 Signaling Pathway
Di WU ; Mengyao SHI ; Lu ZHANG ; Tong LIU ; Jiabing TONG ; Cheng YANG ; Zegeng LI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):78-87
ObjectiveTo investigate the effects and underlying mechanisms of Shenqi Wenfei prescription (SQWF) on chronic obstructive pulmonary disease (COPD). MethodsA rat model of COPD with lung Qi deficiency was established using lipopolysaccharide (LPS) combined with cigarette smoke. Forty-eight SD rats were randomly divided into a blank group, a model group, low-, medium-, and high-dose SQWF groups (2.835, 5.67, 11.34 g·kg-1), and a Yupingfeng group (1.35 g·kg-1). Drug administration began on day 29 after modeling and continued for 2 weeks. The general condition of the rats was observed, and the lung function in each group was assessed. Hematoxylin-eosin (HE) staining was used to observe pathological changes in lung tissue. The proportion of inflammatory cells in bronchoalveolar lavage fluid (BALF) was measured. Apoptosis in lung tissue was examined by terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) staining. The release level of lactate dehydrogenase (LDH) in BALF was detected by a microplate assay. Reactive oxygen species (ROS) levels in lung tissue were detected using fluorescent probes. The levels of malondialdehyde (MDA), total superoxide dismutase (SOD), and reduced glutathione (GSH) in BALF were measured by biochemical methods. Ultrastructural changes in lung cells were observed via transmission electron microscopy. Double immunofluorescence staining was performed to detect the expression of thioredoxin-interacting protein (TXNIP) and nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3) in lung tissue. Western blot analysis was used to detect the protein expression of TXNIP, NLRP3, apoptosis-associated speck-like protein containing a CARD (ASC), cysteinyl aspartate-specific protease-1 (Caspase-1), Caspase-1 p20, gasdermin D (GSDMD), GSDMD N-terminal active fragment (GSDMD-N), interleukin-1β (IL-1β), and IL-18 in lung tissue. Serum IL-1β and IL-18 levels were measured by ELISA. ResultsCompared with the blank group, the model group showed lassitude, fatigue, tachypnea, and audible phlegm sounds, and lung function significantly declined (P0.01). Pulmonary emphysema and inflammatory cell infiltration were obvious. The level of inflammatory cells in BALF increased significantly (P0.05). The number of TUNEL-positive cells increased (P0.01). Levels of LDH, ROS, and MDA in BALF increased significantly (P0.01), while GSH and SOD activities decreased significantly (P0.01). Lung tissue cells showed irregular morphology, swollen mitochondria, disrupted cell membranes, and abundant vesicles, i.e., pyroptotic bodies. Protein levels of TXNIP, NLRP3, ASC, Caspase-1, Caspase-1 p20, GSDMD, GSDMD-N, IL-1β, and IL-18 in lung tissue were significantly elevated (P0.01), and serum IL-1β and IL-18 levels also increased significantly (P0.01). Compared with the model group, each medication group showed alleviation of qi deficiency symptoms and improved lung function (P0.01). Pulmonary emphysema and inflammatory cell infiltration were reduced. Inflammatory cell levels decreased (P0.05). The number of TUNEL-positive cells decreased significantly (P0.01). Levels of LDH, ROS, and MDA decreased significantly (P0.05), while GSH and SOD activities significantly increased (P0.01). Morphological and structural damage in lung tissue was improved to varying degrees. Protein levels of TXNIP, NLRP3, ASC, Caspase-1, Caspase-1 p20, GSDMD, GSDMD-N, IL-1β, and IL-18 in lung tissue significantly decreased (P0.01), and serum IL-1β and IL-18 levels also decreased significantly (P0.05). ConclusionSQWF can improve lung function and alleviate inflammatory responses in COPD rats. Its mechanism may be related to regulating the ROS/TXNIP/NLRP3 pathway and inhibiting pyroptosis.
3.Study on the mechanism of Juanxiao decoction in improving bronchial asthma
Bangqing CAO ; Qiangqiang YU ; Meinian LIU ; Zhixi WU ; Lizhen ZENG ; Mengyao TONG ; Yunhua DENG ; Hanrong XUE
China Pharmacy 2026;37(2):155-160
OBJECTIVE To investigate the potential mechanism by which Juanxiao decoction improves bronchial asthma (hereinafter referred to as “asthma”) based on the nucleotide-binding domain leucine-rich repeat and pyrin domain-containing receptor 3 (NLRP3) inflammasome signaling pathway. METHODS Female SD rats were randomly assigned to normal group, model group and Juanxiao decoction low-, medium- and high-dose groups (0.36, 0.72 and 1.44 g/kg, calculated based on crude drug weight), as well as positive control group (Dexamethasone acetate tablets, 0.2 mg/kg), with 10 rats in each group. Except for the normal group, asthma models were established in the remaining groups via intraperitoneal injection of ovalbumin combined with aluminum hydroxide, followed by nebulized inhalation of ovalbumin. On day 14 of the experiment, rats in each group received intragastric administration of the corresponding solution or normal saline, once a day, for 7 consecutive days. Following the final administration, the following parameters were measured in each group: lung function indexes (forced vital capacity, forced expiratory volume in 0.3 second, peak expiratory flow), serum levels of inflammatory markers (interleukin-1β, interleukin- 18), and the percentages of inflammatory cells (lymphocytes, eosinophils, neutrophils) in bronchoalveolar lavage fluid. Histopathological changes in lung tissue were observed, and the protein and mRNA expressions of nuclear factor-kappa B (NF- κB), NLRP3 and caspase-1 in lung tissue were detected. RESULTS Compared with the normal group, pathological changes such as alveolar wall thickening and inflammatory cell infiltration were observed in rats in the model group. All pulmonary function indicators were significantly reduced in rats in the model group and the administration groups. The levels of inflammatory markers, the percentages of inflammatory cells, and the protein and mRNA expressions of NF-κB, NLRP3 and caspase-1 were significantly elevated or up-regulated (P<0.05). Compared with the model group, pathological changes in rats in each dosage group of Juanxiao decoction were significantly alleviated, and all quantitative indicators showed dose-dependent improvements (P<0.05). CONCLUSIONS Juanxiao decoction can reduce airway inflammatory responses in asthmatic rats, alleviate lung function impairment, and improve pathological changes such as inflammatory cell infiltration. Those effects may be related to the inhibition of the NLRP3 inflammasome signaling pathway.
4.Roles and mechanism of bile acids and gut microbiota in primary biliary cholangitis
Mengyao WU ; Jiayin PAN ; Rong DING ; Jinyu LI ; Wenlin TAI
Journal of Clinical Hepatology 2026;42(4):957-964
Primary biliary cholangitis (PBC) is a cholestatic autoimmune liver disease characterized by the injury of small intrahepatic bile ducts, and at present, the pathogenesis of PBC remains unclear. Recent studies have shown that bile acid metabolism disorder and gut microbiota imbalance play a key role in the development and progression of PBC, and they form a complex and dynamic interaction network via the “gut-liver axis” and regulate core physiopathological processes such as immune response, metabolic homeostasis, and inflammatory response in a synergistic manner. This article systematically elaborates on the abnormal features of bile acid metabolism and gut microbiota in PBC, discusses their synergistic mechanisms in PBC, and then proposes a combined strategy of targeting bile acid receptors and modulating gut microbiota, in order to overcome the limitations of current treatment modalities and provide new insights and directions for the clinical management of PBC.
5.Construction of Mouse Models of Psoriasis-like Lesions Induced by Cold Exposure Combined with Imiquimod and Evaluation of Therapeutic Efficacy of Kaixuan Jiedu Core Prescription
Meiqi SUN ; Xue XIAO ; Jiarong WU ; Jiaqi LI ; Ningxin ZHANG ; Mengyao JIANG ; Huan LIU ; Bin YANG ; Ping SONG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(19):69-78
ObjectiveTo establish the mouse models of psoriasis-like lesions induced by continuous cold exposure or intermittent cold exposure combined with imiquimod (IMQ), and to evaluate the interventional effects of Kaixuan Jiedu core prescription (KXJD) on the two models. MethodsMale C57BL/6J mice were selected and classified into two experimental batches. The first batch of 36 mice was randomized into a room temperature group, a continuous cold exposure (10 ℃/24 h) group, and an intermittent cold exposure (10 ℃/6 h) group. Each group was further divided into a normal subgroup and a model subgroup (topical application of IMQ to induce skin lesions), with 6 mice in each subgroup, for modeling and evaluation. The second batch of 54 mice, with 6 in each group, were subjected to the same temperature grouping with an additional KXJD (30.42 g·kg-1, continuous gavage for 5 days) group. Comprehensive evaluation of model characteristics and KXJD efficacy was conducted through Psoriasis Area and Severity Index (PASI) scoring, skin temperature measurement by infrared thermography, histopathological observation by hematoxylin-eosin (HE) staining, detection of vascular endothelial growth factor (VEGF) and platelet endothelial cell adhesion molecule 1 (CD31) by immunohistochemistry, detection of Claudin-1 and Occludin by immunofluorescence assay, determination of serum levels of tumor necrosis factor-α (TNF-α) and interleukin (IL)-10 by enzyme-linked immunosorbent assay (ELISA), and quantification of mRNA levels of IL-17A, IL-23, IL-6, and chemokine ligand 20 (CCL20) in skin lesions by quantitative Real-time polymerase chain reaction (Real-time PCR). ResultsModel mice in all temperature groups exhibited typical psoriasis-like skin lesions. Compared with the normal groups, the model groups showed increased PASI scores, decreased skin temperatures (P<0.05), obvious epidermal thickening, parakeratosis, and dermal inflammatory cell infiltration, as well as elevated mRNA levels of IL-17A, IL-23, IL-6, and CCL20 (P<0.05). Cold exposure further aggravated psoriasis. The total PASI score of the intermittent cold exposure model group was higher than that of the room temperature model group (P<0.05). The serum IL-10 did not show a compensatory elevation, and the blood vessels presented a characteristic of elevated CD31 expression (P<0.05) without a synchronous increase in VEGF. The continuous cold exposure model group exhibited more significant dermal capillary tortuosity and dilation, with the highest mRNA levels of IL-17A, IL-23, IL-6, and CCL20 among all groups. Compared with the respective model groups, KXJD intervention alleviated skin lesions, reduced epidermal thickness and inflammatory cell infiltration, and increased skin temperature, with the temperature increase being particularly significant in the intermittent cold exposure+KXJD group (P<0.05). Furthermore, KXJD down-regulated the expression of VEGF and CD31, restored the expression of Claudin-1 and Occludin, decreased the mRNA levels of IL-17A and IL-23 (P<0.05), and reduced the serum TNF-α level. ConclusionThis study successfully established compound psoriasis-like mouse models induced by cold exposure combined with IMQ. It confirms that cold aggravates the severity of psoriasis by exacerbating the closure of Xuanfu (sweat pores), microcirculation disorders, and immune imbalance. Moreover, different cold exposure patterns have distinct mechanism differences. Continuous cold exposure focuses on enhancing the inflammatory response via the IL-23/IL-17 axis and angiogenesis, simulating chronic aggravation under a long-term cold environment. Intermittent cold exposure tends to impair immune regulation and induce microvascular endothelial stress, corresponding to acute exacerbations caused by sudden temperature drops. KXJD can effectively alleviate psoriasis-like skin lesions under cold conditions by unblocking Xuanfu, regulating vasomotor function, and correcting abnormal immune-inflammatory responses.
6.Kaixuan Jiedu Core Prescription Alleviates Restraint Stress-exacerbated Imiquimod-induced Psoriasis-like Skin Lesions via Regulation of HPA Axis and Neuroinflammation
Ningxin ZHANG ; Haoruo YANG ; Jiaqi LI ; Mengyao JIANG ; Jiarong WU ; Xinqian LIU ; Bin YANG ; Ping SONG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(19):79-88
ObjectiveTo investigate the ameliorative effect and potential mechanisms of Kaixuan Jiedu core prescription (KXJD) on imiquimod (IMQ)-combined restraint stress-induced psoriasis-like skin lesions in mice. MethodsA total of 36 C57BL/6J mice were randomly assigned to six groups (n=6 per group): Normal group, restraint stress blank group, model group, restraint stress model group, KXJD group (30.42 g·kg-1), and methotrexate group (0.001 g·kg-1). Psoriasis-like lesions were induced by topical IMQ application combined with restraint stress. After 5 days of intervention, the severity of skin lesions was evaluated using the Psoriasis Area and Severity Index (PASI). The following parameters were assessed: Hypothalamic-pituitary-adrenal (HPA) axis-related hormones, including adrenocorticotropic hormone (ACTH), corticotropin-releasing hormone (CRH), and corticosterone (CORT), central neuronal markers, including neuronal nuclei antigen (NeuN), microtubule-associated protein 2 (MAP2), and beta Ⅲ-tubulin (β-Ⅲ tubulin), microglial activation markers, including ionized calcium-binding adapter molecule-1 (Iba-1) and cluster of differentiation 11b (CD11b), and skin nerve fiber markers, including protein gene product 9.5 (PGP9.5) and serotonin (5-HT), as well as the expression levels of inflammatory cytokines tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and interleukin-1 beta (IL-1β). ResultsCompared with the normal group, both the model group and the restraint stress model group exhibited more severe psoriasis-like skin lesions, with significantly elevated serum levels of ACTH, CRH, and CORT (P<0.01). The expression of glucocorticoid receptor (GR) and corticotropin-releasing hormone receptor 1 (CRHR1) in the skin was significantly downregulated. The expression of NeuN, MAP2, β-Ⅲ tubulin, Iba-1, and CD11b in the hypothalamus and hippocampus was significantly upregulated, suggesting abnormal changes in neuronal number or structure and aberrant activation of glial cells (P<0.05, P<0.01). In addition, the expression of PGP9.5 and 5-HT in the skin, as well as the mRNA levels of TNF-α, IL-6, and IL-1β were all markedly elevated (P<0.05, P<0.01). Compared with the model group, the restraint stress model group showed further exacerbation in most parameters. Compared with the restraint stress model group, the KXJD group exhibited significantly reduced PASI scores (P<0.01), significantly decreased serum CRH, ACTH, and CORT levels (P<0.05, P<0.01), upregulated skin GR and CRHR1 expression, inhibited abnormal neuronal changes and microglial activation in the hypothalamus and hippocampus, attenuated skin nerve fiber hyperplasia and amine signaling molecule release, and significantly reduced pro-inflammatory cytokine mRNA expression (P<0.05, P<0.01). ConclusionKaixuan Jiedu Core prescription can effectively ameliorate IMQ combined with restraint stress-induced psoriasis-like skin lesions in mice by modulating HPA axis function, inhibiting central neuropathological changes, and attenuating skin nerve fiber hyperplasia, amine signaling molecule (5‑HT) release and local inflammatory responses.
7.Risk factors and prognosis of first extubation failure in neonates undergoing invasive mechanical ventilation.
Mengyao WU ; Hui RONG ; Rui CHENG ; Yang YANG ; Keyu LU ; Fei SHEN
Journal of Central South University(Medical Sciences) 2025;50(8):1398-1407
OBJECTIVES:
Prolonged invasive mechanical ventilation is associated with increased risks of severe complications such as retinopathy of prematurity and bronchopulmonary dysplasia. Although neonatal intensive care unit (NICU) follow the principle of early extubation, extubation failure rates remain high, and reintubation may further increase the risk of adverse outcomes. This study aims to identify risk factors and short-term prognosis associated with first extubation failure in neonates, to provide evidence for effective clinical intervention strategies.
METHODS:
Clinical data of neonates who received invasive ventilation in the NICU of Children's Hospital of Nanjing Medical University from January 1, 2019, to December 31, 2021, were retrospectively collected. Neonates were divided into a successful extubation group and a failed extubation group based on whether reintubation occurred within 72 hours after the first extubation. Risk factors and short-term outcomes related to extubation failure were analyzed.
RESULTS:
A total of 337 infants were included, with 218 males (64.69%). Initial extubation failed in 34 (10.09%) infants. Compared with the successful extubation group, the failed extubation group had significantly lower gestational age [(31.37±5.14) weeks vs (34.44±4.07) weeks], age [2.5 (1.00, 8.25) h vs 5 (1.00, 22.00) h], birth weight [(1 818.97±1128.80) g vs (2 432.18±928.94) g], 1-minute Apgar score (6.91±1.90 vs 7.68±2.03), and the proportion of using mask oxygenation after extubation (21% vs 46%) (all P<0.05). Conversely, compared with the successful extubation group, the failed extubation group had significantly higher rates of vaginal delivery (59% vs 32%), caffeine use during mechanical ventilation (71% vs 38%), dexamethasone use at extubation (44% vs 17%), the highest positive end-expiratory pressure level within 72 hours post-extubation [6(5.00, 6.00) cmH2O vs 5 (0.00, 6.00) cmH2O] (1 cmH2O=0.098 kPa), the highest FiO2 within 72 hours post-extubation [(34.35±5.95)% vs (30.22±3.58)%], and duration of noninvasive intermittent positive pressure ventilation after extubation [0.5 (0.00, 42.00) hours vs 0 (0, 0) hours] (all P<0.05). Multivariate analysis identified gestational age <28 weeks (OR=5.570, 95% CI 1.866 to 16.430), age at NICU admission (OR=0.959, 95% CI 0.918 to 0.989), and a maximum FiO2≥35% within 72 hours post-extubation (OR=4.541, 95% CI 1.849 to 10.980) as independent risk factors for extubation failure (all P<0.05). Additionally, the failed extubation group exhibited significantly higher incidences of necrotizing enterocolitis grade II or above, moderate-to-severe bronchopulmonary dysplasia, severe bronchopulmonary dysplasia, retinopathy of prematurity, treatment abandonment due to poor prognosis, and discharge on home oxygen therapy (all P<0.05). Total hospital length of stay and total hospitalization costs were also significantly increased in the failed extubation group (all P<0.05).
CONCLUSIONS
Gestational age <28 weeks, younger age at NICU admission, and FiO2≥35% after extubation are high-risk factors for first extubation failure in neonates. Extubation failure markedly increases the risk of adverse clinical outcomes.
Humans
;
Infant, Newborn
;
Male
;
Female
;
Airway Extubation/adverse effects*
;
Risk Factors
;
Retrospective Studies
;
Respiration, Artificial/methods*
;
Intensive Care Units, Neonatal
;
Prognosis
;
Gestational Age
;
Bronchopulmonary Dysplasia
;
Infant, Premature
;
Treatment Failure
;
Intubation, Intratracheal
8.Deubiquitinase JOSD2 alleviates colitis by inhibiting inflammation via deubiquitination of IMPDH2 in macrophages.
Xin LIU ; Yi FANG ; Mincong HUANG ; Shiliang TU ; Boan ZHENG ; Hang YUAN ; Peng YU ; Mengyao LAN ; Wu LUO ; Yongqiang ZHOU ; Guorong CHEN ; Zhe SHEN ; Yi WANG ; Guang LIANG
Acta Pharmaceutica Sinica B 2025;15(2):1039-1055
Inflammatory bowel disease (IBD) is a chronic inflammatory disorder of the gastrointestinal tract, which increases the incidence of colorectal cancer (CRC). In the pathophysiology of IBD, ubiquitination/deubiquitination plays a critical regulatory function. Josephin domain containing 2 (JOSD2), a deubiquitinating enzyme, controls cell proliferation and carcinogenesis. However, its role in IBD remains unknown. Colitis mice model developed by dextran sodium sulfate (DSS) or colon tissues from individuals with ulcerative colitis and Crohn's disease showed a significant upregulation of JOSD2 expression in the macrophages. JOSD2 deficiency exacerbated the phenotypes of DSS-induced colitis by enhancing colon inflammation. DSS-challenged mice with myeloid-specific JOSD2 deletion developed severe colitis after bone marrow transplantation. Mechanistically, JOSD2 binds to the C-terminal of inosine-5'-monophosphate dehydrogenase 2 (IMPDH2) and preferentially cleaves K63-linked polyubiquitin chains at the K134 site, suppressing IMPDH2 activity and preventing activation of nuclear factor kappa B (NF-κB) and inflammation in macrophages. It was also shown that JOSD2 knockout significantly exacerbated increased azoxymethane (AOM)/DSS-induced CRC, and AAV6-mediated JOSD2 overexpression in macrophages prevented the development of colitis in mice. These outcomes reveal a novel role for JOSD2 in colitis through deubiquitinating IMPDH2, suggesting that targeting JOSD2 is a potential strategy for treating IBD.
9.GJB4 Gene Expression in Relation to Clinical and Pathological Features of Pancreatic Cancer Patients
Runlin FENG ; Zongqi DENG ; Mengyao WU ; Yunna WANG ; Yu WANG ; Guilan LIU ; Yanping TAO
Journal of Kunming Medical University 2025;46(1):78-86
Objective To investigate the expression of GJB4 gene in pancreatic cancer tissue and its correlation with clinicopathology.Methods The expression levels of GJB4 mRNA in pancreatic cancer and adjacent cancer tissues were analyzed using bioinformatics to analyze the Cancer Genome Atlas(TCGA)and Genotype-Tissue Expression(GTEx)RNA sequencing datasets.A total of 120 pancreatic cancer samples and 40 adjacent cancer samples from the Pathology Department of The Second Affiliated Hospital of Kunming Medical University from January 2019 to December 2023 were collected and sorted.Immunohistochemistry staining method was used to detect the expression difference of GJB4 protein between the two groups.RT-qPCR method was used to detect the expression levels of GJB4 in four pancreatic cancer cell lines.Univariate and multivariate Cox regression and Kaplan-Meier curves were used to analyze the clinical pathological data of GJB4 and pancreatic cancer patients.DAVID functional annotation bioinformatics and GSEA enrichment analysis were used to explore the relevant pathways of GJB4 in pancreatic cancer.Results The expression level of GJB4 mRNA in pancreatic cancer was higher than that in adjacent tissues,and the high expression of GJB4 was significantly associated with poor prognosis of patients(P<0.05).Immunohistochemical analysis showed that GJB4 protein was brown-yellow granular in pancreatic cancer tissues,mainly expressed in cytoplasm and cell membrane,and GJB4 protein expression was up-regulated in pancreatic cancer(P<0.05).The RT-qPCR test results showed that out of 4 pancreatic cancer cell lines,3 of them had upregulated expression(P<0.05).COX regression analysis showed that GJB4 gene was an independent risk factor in the prognosis of pancreatic cancer patients.The results of GO enrichment analysis showed that GJB4 was related to the transmembrane transport,ion channel,signal release and membrane potential regulation of pancreatic cancer.GSEA analysis showed that GJB4 was enriched in the Wnt/β-catenin signaling pathway.Conclusion In pancreatic cancer,the high expression level of GJB4 is closely related to the clinicopathological features of the patients,which may predict the poor prognosis of the patients.GJB4 may be involved in regulating the Wnt/β-catenin signaling pathway of pancreatic cancer,and is expected to be one of the potential biomarkers of pancreatic cancer prognosis.
10.Clinical research progress of CAR-T cell therapy in autoimmune neurological diseases
Zhenzhen YANG ; Mengkai GUO ; Jinghan NIU ; Mengyao GUO ; Kunda SHI ; Xinjing LIU ; Jun WU
Chinese Journal of Neuromedicine 2025;24(11):1145-1153
Autoimmune diseases of the nervous system are a category of conditions in which a malfunction of the body's immune system leads to damage of nerve tissues, with B cells playing a critical role in their pathogenesis. Currently, the therapeutic approaches used in clinical practice (such as monoclonal antibodies targeting B cells) can effectively control the progression of these diseases, but fail to achieve a radical cure. Chimeric antigen receptor (CAR)-T cell therapy uses genetic engineering to modify T cells derived from either patients or donors, enabling them to specifically target and durably eliminate peripheral B cells, which might remit or even functionally cure these diseases. Currently, multiple clinical studies on efficacy and safety of CAR-T cell therapy in neurological autoimmune diseases have been carried out successively, and initial results have been achieved. This article reviews the clinical research progress in this field, discusses its application prospects and challenges, aiming to provide some references for in-depth research in this area.

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