1.The effects of galangin on the apoptosis and autophagy of gastric cancer NCI-N87 cells through regulating the AMPK/mTOR/ULK1 signaling pathway
GUO Fang ; CHEN Wei ; LIU Meng ; ZOU Yanli ; TIAN Xia
Chinese Journal of Cancer Biotherapy 2026;33(1):59-65
[摘 要] 目的:探讨高良姜素(Gal)调控AMPK/mTOR/ULK1信号通路对胃癌细胞凋亡和自噬的影响及其机制。方法:将胃癌NCI-N87细胞分为对照组、多索吗啡(DM)组、Gal低剂量(Gal-L)组、Gal高剂量(Gal-H)组、Gal-H + DM组。采用MTT法、流式细胞术、划痕愈合实验和Transwell实验分别检测各组细胞的增殖、凋亡、迁移和侵袭能力,WB法检测PCNA、C-caspase-3、免疫逃逸相关蛋白(B7H1)、EMT和AMPK/mTOR/ULK1信号通路蛋白的表达水平。建立裸鼠NCI-N87细胞移植瘤模型,观察Gal和5-FU对移植瘤的抑制效果。结果:与对照组比较,DM组NCI-N87细胞增殖活性、划痕愈合率和侵袭细胞数、N-cadherin、vimentin、PCNA、B7H1、p62和p-mTOR/mTOR蛋白表达均显著升高(均P < 0.05),细胞凋亡率、C-caspase-3、E-cadherin、LC3Ⅱ/LC3Ⅰ、p-AMPK/AMPK和p-ULK1/ULK1蛋白表达均显著降低(均P < 0.05);Gal-L组和Gal-H组NCI-N87细胞的增殖活性、划痕愈合率和侵袭细胞数、N-cadherin、vimentin、PCNA、B7H1、p62和p-mTOR/mTOR蛋白表达均显著降低(均P < 0.05),细胞凋亡率、C-caspase-3、E-cadherin、LC3Ⅱ/LC3Ⅰ、p-AMPK/AMPK和p-ULK1/ULK1蛋白表达均显著升高(均P < 0.05);DM可部分逆转Gal对NCI-N87细胞恶性生物学行为的抑制作用(P < 0.05);与对照组比较,Gal组和5-FU组裸鼠移植瘤体积和质量均显著降低,肿瘤组织细胞凋亡率显著升高(P < 0.05)。结论:Gal可促进胃癌NCI-N87细胞自噬和凋亡,抑制其增殖、迁移和侵袭,可能与激活AMPK/mTOR/ULK1信号通路有关。
2.Preliminary application of histological evaluation of donor pancreas biopsy tissue in simultaneous pancreas-kidney transplantation
Jiao WAN ; Hui GUO ; Jiali FANG ; Guanghui LI ; Luhao LIU ; Yunyi XIONG ; Wei YIN ; Tong YANG ; Junjie MA ; Zheng CHEN
Organ Transplantation 2026;17(2):250-256
Objective To preliminarily investigate the safety and efficacy of donor pancreas needle biopsy in simultaneous pancreas-kidney transplantation. Methods Clinical data of 7 cases undergoing donor pancreas biopsy were collected retrospectively. All cases underwent donor pancreas biopsy before or during simultaneous pancreas-kidney transplantation. Frozen section or paraffin sectioning techniques were used for tissue preparation, and hematoxylin-eosin and Masson staining were performed to histologically evaluate the donor pancreas. The quality of donor pancreas was comprehensively assessed by combining histological findings with the donor's clinical data. Postoperative follow-up data of 5 simultaneous pancreas-kidney transplant recipients were collected to summarize the safety of donor pancreas biopsy and the prognosis of transplant recipients. Results The 7 pancreas donors were aged 28 to 62 years, with a body mass index ranging from 20.76 to 27.68 kg/m2. Liver ultrasound indicated fatty liver in 3 cases, while pancreatic ultrasound did not reveal any significant abnormalities. Among them, biopsy was performed on 2 donors after completion of pancreatic procurement and processing, and the frozen section histology showed moderate acute pancreatitis changes (edema of acinar cells, necrosis and inflammatory cell infiltration). Combined with a serum amylase level elevated more than 3 times the upper limit of normal value, these two donor pancreases were finally discarded. The remaining 5 cases underwent biopsy immediately after pancreatic vascular anastomosis during simultaneous pancreas-kidney transplantation, and histological evaluation was performed on paraffin-embedded sections. No biopsy-related complications (such as bleeding, pancreatic fistula, etc.) occurred after transplantation. One recipient died of severe infection 2 months after transplantation, while the other 4 recipients were followed up for more than 5 years, with well-functioning transplant kidneys and pancreases. Conclusions Donor pancreas biopsy is relatively safe, and the risk of biopsy-related complications after transplantation is controllable. Comprehensive assessment of donor pancreas quality by combining histological evaluation with the donor's clinical indicators is conducive to improving the accuracy of donor pancreas selection and organ utilization.
3.Analysis of prevalence of depressive symptoms and associated factors among students in Zhejiang Province
SHI Yingyun, GU Fang, XIA Jiayue, LIU Qinye, WEI Xiaoyu, CHEN Fen, WEI Yizhou, LIU Weina
Chinese Journal of School Health 2026;47(2):232-236
Objective:
To investigate the prevalence of depressive symptoms and their associated factors among students in Zhejiang Province, so as to provide evidence for targeted prevention strategies.
Methods:
A stratified cluster random sampling method was used to select 23 829 college students and primary and secondary school students aged 11-22 years in Zhejiang Province from December 2019 to February 2020. Depressive symptoms were assessed using the Center for Epidemiologic Studies Depression Scale (CES-D). Three machine learning algorithms, including Logistic regression, random forest, and eXtreme Gradient Boosting (XGBoost), were applied to construct predictive models, and key associated factors were identified by comparing model performance.
Results:
The detection rate of depressive symptoms among students in Zhejiang Province was 19.92%; the rates were 17.20% in boys and 22.87% in girls( χ 2=164.89, P <0.05). The CES-D total score was 9.00(4.00,13.00). Multiple Logistic regression analysis revealed that loneliness had the strongest association with depressive symptoms ( AOR =9.58, 95% CI =8.90-10.30), while bullying exposure ( AOR =4.39, 95% CI =4.02-4.80), female students( AOR =1.81, 95% CI =1.68-1.94),never eating breakfast ( AOR = 2.34,95% CI =2.00-2.67) and overweight/obesity( AOR =1.10,95% CI =1.08-1.12) were significant associated factors of depressive symptoms among students (all P <0.05). Analysis based on the XGBoost model produced highly consistent results, identifying the above 5 factors as the core features with the highest correlation strength (all P <0.05).
Conclusions
Female, loneliness, bullying exposure, frequency of weekly breakfast and BMI are strongly associated with depressive symptoms among students. Mental health education for high risk groups should be strengthened, and coordinated prevention efforts between families and schools are recommended.
4.Strategies of HIV-1 Vaccines Based on mRNA Platforms
Pei LIU ; Zhong-Yue FANG ; Xin-Xin CHEN ; Shao-Wei LI ; Ying GU
Progress in Biochemistry and Biophysics 2026;53(4):826-839
Since its emergence in the 1980s, the human immunodeficiency virus (HIV) has caused a global pandemic, posing a severe threat to human life and health as well as social development. Although pre-exposure prophylaxis (PrEP) effectively curbs HIV transmission and antiretroviral therapy (ART) significantly extends the lifespan of patients, vaccines remain a pivotal tool for blocking transmission and ending the pandemic. The high genetic variability of HIV-1, the glycan shield of its envelope glycoproteins, and the long-term persistence of latent reservoirs have repeatedly led to bottlenecks in traditional vaccine strategies. In recent years, mRNA technology has offered a novel approach to addressing these challenges, leveraging advantages such as sequence programmability, short production cycles, native conformational expression of antigens, and self-adjuvant effects. In recent years, mRNA vaccine technology has emerged as a transformative solution to longstanding vaccinology challenges, characterized by its sequence programmability, rapid production cycles, native conformational antigen expression, and intrinsic self-adjuvanting properties. Unlike traditional platforms reliant on pathogen culture or recombinant proteins, mRNA vaccines can be expeditiously designed and updated based solely on viral genomic sequences. Lipid nanoparticle (LNP)-encapsulated mRNA facilitates endogenous antigen expression and presentation, simultaneously eliciting potent humoral and cellular immune responses. Within this landscape, self-amplifying mRNA (saRNA) further extends in vivo antigen expression to enhance the persistence of immune responses. Moreover, the LNP delivery system not only protects mRNA from degradation and mediates endosomal escape but also synergizes with mRNA to optimize immune activation via self-adjuvant effects. Importantly, mRNA platforms circumvent the pre-existing immunity associated with viral vectors and the genomic integration risks of DNA vaccines, positioning them as a cornerstone for global pandemic preparedness. This review systematically delineates recent advances in mRNA technology for HIV-1 vaccine development, focusing on four pivotal research frontiers. First, mRNA innovations building upon the RV144 trial optimize antigens through codon modification and multivalent designs to induce more durable and broad-spectrum immunity. Second, particulate mRNA vaccine strategies, utilizing virus-like particles (VLPs) and ferritin nanoparticles, achieve in situ antigen self-assembly, significantly enhancing B cell activation and reducing infection risks in non-human primate models. Third, germline-targeting mRNA vaccines address the low-affinity barrier of broadly neutralizing antibody (bNAp) precursors, efficiently activating rare precursor B cells and promoting affinity maturation. Fourth, therapeutic mRNA vaccines offer unique advantages for an HIV functional cure; combining immunogens with mRNA-encoded adjuvants potentiates cellular immunity, while LNP-mediated “shock-and-kill” strategies specifically activate latent reservoirs to guide immune clearance. Comparative analyses with traditional platforms reveal that mRNA technology redefines antigen production and presentation, simulating chronic infection through sustained expression and enabling dual-pathway presentation via endogenous synthesis. Furthermore, we explore the mechanistic innovations of mRNA vaccines in inducing bNAps: sustained in vivo production prolongs the activation window for precursor B cells and maintains germinal center (GC) reactions; endogenously expressed antigens adopt native conformations to expose conserved epitopes; and self-adjuvanting effects modulate the functions of antigen-presenting cells (APCs) and follicular helper T cells (Tfh), driving somatic hypermutation and affinity maturation. We also address critical clinical translation challenges, including immune durability, adaptability to special populations, and large-scale LNP manufacturing, while proposing targeted optimization strategies. In conclusion, this review establishes a theoretical framework for utilizing mRNA technology to overcome HIV-1 immune escape, transitioning from a descriptive paradigm to a problem-solving-based synthesis of evidence. By integrating preclinical and early clinical data, we bridge the gap between basic design and translational verification. mRNA technology is poised to become a central pillar inHIV-1 prevention and therapy, providing a robust toolset to achieve the global goal of ending the AIDS pandemic and offering a blueprint for vaccine development against other recalcitrant infectious diseases.
5.Network meta-analysis of pneumonitis and interstitial lung disease associated with antibody-drug conjugates in the treatment of breast cancer
Xiaohan WANG ; Wei CHEN ; Fang YANG ; Keming CAO ; Jingxin WANG ; Wenxin XUE
China Pharmacy 2026;37(10):1370-1375
OBJECTIVE To compare the risk of pneumonitis and interstitial lung disease (ILD) associated with different antibody-drug conjugates (ADC) in the treatment of breast cancer. METHODS CNKI, VIP, PubMed, Embase and other Chinese and English databases, and ClinicalTrials.gov were searched from the inception to June 15, 2025. Randomized controlled trials (RCT) about pneumonitis and ILD associated with ADC (T-DM1, T-DXd, SG, Dato-DXd, SHR-A1811,ARX788, and T-Duo) in the treatment of breast cancer were included. After literature screening, data extraction, and quality assessment, a network meta-analysis was conducted using Stata 17.0 software, and the surface under the cumulative ranking curve(SUCRA) of all interventions were ranked. RESULTS A total of 19 RCTs involving 10 556 patients were included. The overall incidence of pneumonitis with ARX788 and T-DXd was significantly higher than that with T-DM1, T-DM1 plus TPC(T-DM1combined with pertuzumab or atezolizumab), TPC(treatment of primary care), and SG ( P <0.05), for grade 1-2 pneumonitis, ARX788 and T-DXd showed significantly higher incidence than T-DM1, T-DM1 plus TPC, and TPC ( P <0.05). For both indicators, ARX788 and T-Duo were ranked as the top two by SUCRA. For the incidence of grade ≥3 pneumonitis, T-DXd and T-DM1 were significantly higher than SG ( P <0.05), T-Duo and Dato-DXd were ranked as the top two by SUCRA. For overall incidence of ILD, ARX788 was significantly higher than T-DM1, SHR-A1811, TPC, and SG ( P <0.05), for the incidence of grade 1-2 ILD, ARX788 was significantly higher than T-DM1, SHR-A1811, and TPC ( P <0.05), for the incidence of grade ≥3 ILD, ARX788 was significantly higher than TPC ( P <0.05). For three indicators above, ARX788 and T-DXd combined with pertuzumab were ranked as the top two by SUCRA. CONCLUSIONS Compared with other ADCs, ARX788 and T-Duo are associated with a higher risk of pneumonitis and ILD in patients with breast cancer.
6.Differences in deltamethrin resistance and kdr gene mutation in Culex tritaeniorhynchus population in and outside the Yellow Sea wetland
Xiao-er ZHANG ; Zhi-ming WU ; Ye TIAN ; Qian CUI ; Yu-qian JI ; Huan WANG ; Shu-juan YANG ; Yi-chao ZHAO ; Yu WANG ; Hua-yu YIN ; Yu DING ; Guo-jin YAN ; Min-sen ZHAO ; Shou-gang ZHANG ; Bing-dong SONG ; Hong-na CHEN ; Jian GAO ; Wei-fang YANG ; Yu-fu ZHANG ; Hui LIU ; Hong-liang CHU
Acta Parasitologica et Medica Entomologica Sinica 2026;33(2):101-107
Objective To gain insights into the biological characteristics of different populations of Culex tritaeniorhynchus within and around the Yellow Sea wetland from the perspective of the occurrence of resistance, we investigated the levels of resistance to deltamethrin and kdr gene mutation in the wetland and its peripheral areas. Methods Specimens were collected from Cx. tritaeniorhynchus populations at two monitoring sites in the Rare Bird National Nature Reserve and Tiaozi Ni Wetland Scenic Area, and also from two populations in Yancheng City and the Liuhe District of Nanjing, and the resistance of these mosquitoes to deltamethrin was determined using the CDC biotest bottle method. For each concentration of deltamethrin assessed, a random subset of exposed specimens was selected for amplification of the kdr gene fragment, followed by Sanger sequencing to identify and analyze resistance-associated mutations. Results The LC50 levels of deltamethrin among mosquitoes from the four populations in Luhe, Yancheng, the Rare Bird National Nature Reserve and the Tiaozi Ni Wetland Scenic Area were 2.048 5, 7.798 2, 3.473 3, and 17.695 5 mg/mL, respectively, with corresponding concentrations of deltamethrin ranging from 0.005 to 5.000,0.050 to 50.000,0.050 to 25.000 and 0.050 to 50.000 mg/mL, respectively. Furthermore, the ranges of the KT50 values were 11.76-107.43, 67.05-216.30,29.77-107.43 and 28.40-329.51 min; the 1-h knockdown rates were 34.58%-99.15%, 9.52%-43.80%, 55.09%-73.01%, and 10.09%-68.07%; and the 24-h mortality rates were 12.15%-67.52%,9.52%-79.56%,13.17%-82.21%, and 11.01%-78.99%, respectively. With respect to kdr gene mutation, we assayed a total of 63,70,59, and 57 mosquitoes for the four populations, for which we detected L1014F mutation frequencies of 14.29%, 35.00%, 20.34%, and 31.58%, respectively, with a majority of these mutations being heterozygous for resistance. In addition, five adult mosquitoes were identified has having synonymous mutations at site 1011[i. e. , AAT(asparagine)mutation to AAC(asparagine)]. Conclusions Our findings revealed the clear resistance of Cx. tritaeniorhynchus to deltamethrin in the Yancheng region of the Yellow Sea wetland, and the resistance phenotype and kdr frequency of Cx. tritaeniorhynchus in the wetland environment were comparable to those of Cx. tritaeniorhynchus in the wetland environment, thereby indicating that the resistance of different populations of Cx. tritaeniorhynchus was homogeneous under the pressure of different insecticide selection within and around the wetland. However, the underlying mechanisms need to be further studied.
7.Pain characteristics of patients with depression disorder across different self-injury/suicide risk phenotypes and their associations with the risk phenotypes
Qianxue WEI ; Yousong SU ; Jia HUANG ; Jun CHEN ; Yiru FANG
Sichuan Mental Health 2026;39(4):303-308
BackgroundSuicide and self-injury risk in patients with depression disorder is associated with pain symptoms, but the relationships between specific pain types and their severity and distinct self-injury/suicide risk phenotypes remain controversial. ObjectiveTo explore whether somatic pain can reflect different self-injury/suicide risk phenotypes, and to provide references for the clinical identification of suicide and self-injury risk in patients with depression. MethodsBased on data from the National Survey on Symptomatology of Depression (NSSD), 3 275 patients who met the diagnostic criteria for major depressive disorder in the Diagnostic and Statistical Manual of Mental Disorders, fourth edition, text revision (DSM-IV-TR) were recruited. According to previous suicidal behavior, suicidal ideation and self-injury behavior in the past two weeks, patients were divided into the no self-injury/suicide risk group, self-injury group, and high suicide-risk group. The occurrence of headache, muscle soreness, trunk pain, limb pain, and other pain symptoms was assessed using the structured symptom assessment instrument of the NSSD. With the no self-injury/suicide risk group as the reference, an ordinal Logistic regression model was used to analyze the associations between the risk groups and the occurrence frequency of pain, with demographic and clinical characteristics entered into the model as covariates for adjustment. ResultsA total of 3 211 patients (98.05%) were included in the analysis, including 1 329 cases (41.39%) in the no self-injury/suicide risk group, 415 cases (12.92%) in the self-injury group, and 1 467 cases (45.69%) in the high suicide-risk group. Compared with the no self-injury/suicide risk group, the occurrence frequencies of headache (OR=1.526, 95% CI: 1.221–1.894) and muscle soreness (OR=1.287, 95% CI: 1.034–1.597) were higher in the self-injury group, and the occurrence frequencies of headache (OR=0.583, 95% CI: 0.504–0.672), muscle soreness (OR=0.682, 95% CI: 0.597–0.780), trunk pain (OR=0.557, 95% CI: 0.475–0.634), limb pain (OR=0.454, 95% CI: 0.384–0.522), and other pain difficult to localize (OR=0.542, 95% CI: 0.472–0.631) were all lower in the high suicide-risk group. ConclusionPatients with depression disorder across different self-injury and suicide risk phenotypes exhibit distinct pain characteristics, and these differences may provide a reference for the clinical identification of suicide and self-injury risk in patients with depression disorder. [Funded by The National Key Research and Development Program of China during the "13th Five-Year Plan" period (number, 2016YFC1307100); Shanghai Key Clinical Specialties Construction Project]
8.Mechanism of Qiju Dihuang Wan in Treatment of Diabetic Retinopathy Based on NLRP3/Caspase-1/GSDMD Signaling Pathway
Ge ZHANG ; Chunlin ZHAO ; Li PAN ; Ying ZHANG ; Zehai CHEN ; Siya ZHANG ; Yiming FANG ; Wei SHI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):11-21
ObjectiveTo investigate the protective effect of Qiju Dihuang Wan on diabetic retinopathy (DR) and its regulatory mechanism on the NOD-like receptor protein 3/Cysteinyl aspartate-specific proteinase-1/Gasdermin D (NLRP3/Caspase-1/GSDMD) signaling pathway. MethodsHuman retinal microvascular endothelial cells (HRMEC) were divided into the blank group, model group, and Qiju Dihuang Wan low- and high-dose groups. Except for the blank group, all groups were induced with 40 mmol·L-1 high glucose, and the treatment groups were supplemented with 6% and 12% Qiju Dihuang Wan-containing serum, respectively, based on the induction. After 24 h of culture, the levels of interleukin (IL)-1β and IL-18 were measured by enzyme-linked immunosorbent assay (ELISA), pyroptosis-related protein expression was detected by immunofluorescence and Western blot, and the mRNA levels of NLRP3/Caspase-1/GSDMD signaling pathway-related molecules were determined by real-time polymerase chain reaction (Real-time PCR). The mice were randomly divided into the blank group, model group, Qiju Dihuang Wan low-, medium-, and high-dose groups (11, 22, 44 g·kg-1·d-1), and calcium dobesilate group (0.13 g·kg-1·d-1). Except for the blank group, all groups were intraperitoneally injected with streptozotocin to establish the DR model. After successful modeling, the treatment groups received corresponding doses of Qiju Dihuang Wan crude drug or calcium dobesilate suspension by gavage once daily, while the blank group and model group received an equal volume of normal saline, for 8 consecutive weeks. Fundus changes were examined by optical coherence tomography, optical coherence tomography angiography, and fundus fluorescein angiography. Retinal pathological morphology was observed by hematoxylin-eosin staining. Real-time PCR was used to detect the mRNA levels of NLRP3, Caspase‑1, GSDMD, IL‑1β, and IL‑18 in retinal tissue, and Western blot was used to detect the protein expression of NLRP3, ASC, cleaved Caspase‑1, and GSDMD‑N. ResultsCell experiments showed that compared with the blank group, the model group showed significantly decreased HRMEC viability (P<0.01), and significantly increased levels of IL-1β, IL-18, as well as increased protein expression of NLRP3, cleaved Caspase-1, and GSDMD-N (P<0.01). Compared with the model group, the above indicators were significantly reduced in the high-dose Qiju Dihuang Wan groups (P<0.05, P<0.01). Animal experiments showed that compared with the blank group, the model group had elevated blood glucose (P<0.01), decreased retinal thickness and vascular density (P<0.01), up‑regulated mRNA expression of NLRP3, Caspase‑1, GSDMD, IL‑1β and IL‑18 in retinal tissue (P<0.01), and up‑regulated protein expression of NLRP3, ASC, cleaved Caspase‑1 and GSDMD‑N (P<0.01). Compared with the model group, the Qiju Dihuang Wan medium- and high‑dose groups showed decreased blood glucose (P<0.01), increased retinal thickness and vascular density (P<0.01), alleviated retinal pathological damage, and down‑regulated mRNA expression of NLRP3, Caspase‑1, GSDMD, IL‑1β, IL‑18, as well as protein expression of NLRP3, ASC, cleaved Caspase‑1, and GSDMD‑N (P<0.05, P<0.01). ConclusionQiju Dihuang Wan may exert protective effects against diabetic retinopathy by inhibiting the activation of the NLRP3/Caspase-1/GSDMD signaling pathway and alleviating high glucose-induced retinal pyroptosis.
9.Mechanism of Qiju Dihuang Wan in Treatment of Diabetic Retinopathy Based on NLRP3/Caspase-1/GSDMD Signaling Pathway
Ge ZHANG ; Chunlin ZHAO ; Li PAN ; Ying ZHANG ; Zehai CHEN ; Siya ZHANG ; Yiming FANG ; Wei SHI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):11-21
ObjectiveTo investigate the protective effect of Qiju Dihuang Wan on diabetic retinopathy (DR) and its regulatory mechanism on the NOD-like receptor protein 3/Cysteinyl aspartate-specific proteinase-1/Gasdermin D (NLRP3/Caspase-1/GSDMD) signaling pathway. MethodsHuman retinal microvascular endothelial cells (HRMEC) were divided into the blank group, model group, and Qiju Dihuang Wan low- and high-dose groups. Except for the blank group, all groups were induced with 40 mmol·L-1 high glucose, and the treatment groups were supplemented with 6% and 12% Qiju Dihuang Wan-containing serum, respectively, based on the induction. After 24 h of culture, the levels of interleukin (IL)-1β and IL-18 were measured by enzyme-linked immunosorbent assay (ELISA), pyroptosis-related protein expression was detected by immunofluorescence and Western blot, and the mRNA levels of NLRP3/Caspase-1/GSDMD signaling pathway-related molecules were determined by real-time polymerase chain reaction (Real-time PCR). The mice were randomly divided into the blank group, model group, Qiju Dihuang Wan low-, medium-, and high-dose groups (11, 22, 44 g·kg-1·d-1), and calcium dobesilate group (0.13 g·kg-1·d-1). Except for the blank group, all groups were intraperitoneally injected with streptozotocin to establish the DR model. After successful modeling, the treatment groups received corresponding doses of Qiju Dihuang Wan crude drug or calcium dobesilate suspension by gavage once daily, while the blank group and model group received an equal volume of normal saline, for 8 consecutive weeks. Fundus changes were examined by optical coherence tomography, optical coherence tomography angiography, and fundus fluorescein angiography. Retinal pathological morphology was observed by hematoxylin-eosin staining. Real-time PCR was used to detect the mRNA levels of NLRP3, Caspase‑1, GSDMD, IL‑1β, and IL‑18 in retinal tissue, and Western blot was used to detect the protein expression of NLRP3, ASC, cleaved Caspase‑1, and GSDMD‑N. ResultsCell experiments showed that compared with the blank group, the model group showed significantly decreased HRMEC viability (P<0.01), and significantly increased levels of IL-1β, IL-18, as well as increased protein expression of NLRP3, cleaved Caspase-1, and GSDMD-N (P<0.01). Compared with the model group, the above indicators were significantly reduced in the high-dose Qiju Dihuang Wan groups (P<0.05, P<0.01). Animal experiments showed that compared with the blank group, the model group had elevated blood glucose (P<0.01), decreased retinal thickness and vascular density (P<0.01), up‑regulated mRNA expression of NLRP3, Caspase‑1, GSDMD, IL‑1β and IL‑18 in retinal tissue (P<0.01), and up‑regulated protein expression of NLRP3, ASC, cleaved Caspase‑1 and GSDMD‑N (P<0.01). Compared with the model group, the Qiju Dihuang Wan medium- and high‑dose groups showed decreased blood glucose (P<0.01), increased retinal thickness and vascular density (P<0.01), alleviated retinal pathological damage, and down‑regulated mRNA expression of NLRP3, Caspase‑1, GSDMD, IL‑1β, IL‑18, as well as protein expression of NLRP3, ASC, cleaved Caspase‑1, and GSDMD‑N (P<0.05, P<0.01). ConclusionQiju Dihuang Wan may exert protective effects against diabetic retinopathy by inhibiting the activation of the NLRP3/Caspase-1/GSDMD signaling pathway and alleviating high glucose-induced retinal pyroptosis.
10.Explore of nanopore sequencing technology in ambiguities of HLA genotyping
Nanying CHEN ; Wei ZHANG ; Lina DONG ; Fang WANG ; Yizhen HE ; Chen CHEN ; Faming ZHU
Chinese Journal of Blood Transfusion 2025;38(3):309-315
[Objective] To resolve the ambiguities of HLA genotyping generated by next generation sequencing (NGS) using nanopore sequencing technology. [Methods] A total of 38 samples with ambiguous HLA genotyping by NGS in our laboratory were collected, and HLA-A, -B, -C, -DRB1, -DRB3/4/5, -DQA1, -DQB1, -DPA1 and -DPB1 loci in these samples were amplified using primers in the same commercial NGS HLA genotyping kit, then subjected to third-generation library construction, and sequenced on the nanopore sequencer. The sequencing data were converted into Fastq files and analyzed by software, and the genotypes of 11 HLA loci were obtained. The ambiguities were counted directly. [Results] The high-resolution genotyping at the second domain of 11 HLA loci of 38 samples using the third generation sequencing (TGS) were consistent with the results of the NGS method at a rate of 100%. The genotypes for the HLA-A, -B, -C, -DRB3, -DRB4, -DQA1 and -DPA1 loci by TGS were all only one result, and the discrimination rate for ambiguities of the HLA-A, -B, -C, and -DQA1 loci (all caused by the difficulty in phasing due to the short NGS read length) was 100%. Among the HLA-DRB1, -DRB5, -DQB1 and -DPB1 loci, the discrimination rate of TGS for the ambiguities caused by non-amplification of exon 1 was 0% and by the short NGS read length was 100%. [Conclusion] Nanopore technology was used to identify the ambiguities of 11 HLA loci in this study, and the ambiguities caused by the short read length disadvantage of the NGS method could be solved effectively and the accuracy of HLA genotyping would be improved.


Result Analysis
Print
Save
E-mail