4.Strategies for Optimizing Tumor Physical Microenvironment to Enhance in Situ Vaccine Efficacy
Han LI ; Xiaolu WANG ; Changhua YU ; Baorui LIU ; Rutian LI
Cancer Research on Prevention and Treatment 2025;52(10):840-847
In situ tumor vaccine has become an important strategy in cancer immunotherapy owing to its ability to induce immune responses locally and overcome tumor heterogeneity. However, the abnormal structure and mechanical properties of the tumor’s physical microenvironment significantly limit the efficiency of vaccine delivery and immune efficacy. In this review, the key factors in the tumor’s physical microenvironment, including solid pressure, interstitial fluid pressure, matrix stiffness, and tissue microstructure, are systematically discussed. Their obstructive roles in immune cell infiltration, antigen presentation, and immune activation are analyzed. The potential of approaches, such as radiotherapy, anti-angiogenic therapy, extracellular matrix degradation agents, nanomaterials, and hydrogel delivery platforms, in reshaping the tumor’s physical microenvironment is explored. This review aims to offer theoretical and practical guidance for optimizing in situ vaccine strategies through the regulation of the tumor’s physical microenvironment, ultimately advancing the precision and effectiveness of cancer immunotherapy.
5.Identification of oxidative stress-related biomarkers in chronic rhinosinusitis with nasal polyps using WGCNA combined with machine learning algorithms
Ye YUAN ; Xueyun SHI ; Xinyi MA ; Xinyu XIE ; Changhua WU ; Liqiang ZHANG ; Xuezhong LI ; Pin WANG ; Xin FENG
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2024;59(6):560-572
Objective:To identify diagnostic markers related to oxidative stress in chronic rhinosinusitis with nasal polyps (CRSwNP) by analyzing transcriptome sequencing data, and to investigate their roles in CRSwNP.Methods:Utilizing four CRSwNP sequencing datasets, differentially expressed genes (DEGs) analysis, weighted gene co-expression network analysis (WGCNA), and three machine learning methods for Hub gene selection were performed in this study. Subsequent validation was carried out using external datasets, as well as real-time quantitative polymerase chain reaction (Real-time qPCR), and immunofluorescence staining of clinical samples. Moreover, the diagnostic efficacy of the genes was assessed by receiver operating characteristic (ROC) curve, followed by functional and pathway enrichment analysis, immune-related analysis, and cell population localization. Additionally, a competing endogenous RNA (CeRNA) network was constructed to predict potential drug targets. Statistical analysis and plotting were conducted using SPSS 26.0 and Graphpad Prism9 software.Results:Through data analysis and clinical validation, CP, SERPINF1 and GSTO2 were identified among 4 138 DEGs as oxidative stress markers related to CRSwNP. Specifically, the expression of CP and SERPINF1 increased in CRSwNP, whereas that of GSTO2 decreased, with statistically significant differences ( P<0.05). Additionally, an area under the curve (AUC)>0.7 indicated their effectiveness as diagnostic indicators. Importantly, functional analysis indicated that these genes were mainly related to lipid metabolism, cell adhesion migration, and immunity. Single-cell data analysis revealed that SERPINF1 was mainly distributed in epithelial cells, stromal cells, and fibroblasts, while CP was primarily located in epithelial cells, and GSTO2 was minimally present in the epithelial cells and fibroblasts of nasal polyps. Consequently, a CeRNA regulatory network was constructed for the genes CP and GSTO2. This construction allowed for the prediction of potential drugs that could target CP. Conclusion:This study successfully identifies CP, SERPINF1 and GSTO2 as diagnostic and therapeutic markers related to oxidative stress in CRSwNP.
6.Expert consensus on the biosafety recommendation for arthropods of medical importance in field and laboratory
HE Changhua ; LUO Huanle ; YIN Feifei ; HAN Qian ; LIANG Lei ; SHI Yongxia ; YU Xuedong ; SUN Yi ; LIU Qiyong ; WANG Huanyu ; WANG Rong ; SHAN Chao ; DENG Fei ; YUAN Zhiming ; XIA Han
China Tropical Medicine 2024;24(2):119-
The emerging and re-emerging arthropod-borne infectious diseases pose a serious threat to global public health security. Field and laboratory studies of arthropods of medical importance are essential and critical for the prevention and control of arthropod-borne infectious diseases. Various institutions or universities in China have been conducting research in the field or laboratory study of arthropods of medical importance, but up to 2023, it is still lacking detailed biosafety guidelines or recommendations that can guide the related work for arthropods of medical importance. In order to proactively address potential biosafety issues in the field or laboratory activities related to arthropods of medical importance, improve the standardization of arthropod biosafety classification, operations, and protection, and ensure the safety of practitioners, an expert consensus on the biosafety recommendation of arthropods of medical importance in field and laboratory has been developed, aiming to guide the future work of arthropods and ensure the national biosafety and biosecurity of China.
7.The Influence of "Five Movements and Six Qi" Theory on Liu Wansu's Medical Theory System
Liwei LIU ; Jiang REN ; Yitong WANG ; Changhua LIU
Journal of Nanjing University of Traditional Chinese Medicine 2024;40(4):334-340
The five movements and six qi theory(hereinafter referred to as"movement qi theory")runs through Liu Wansu's med-ical theoretical system,which is mainly reflected in its influence on the theory of pathogenesis,the creation of fiery heat theory,and the influence of Liu Wansu's clinical diagnosis and treatment thoughts.The influence of movement qi theory on Liu Wansu's pathogen-esis theory includes three aspects:six qi alternation on pathogenesis,five movement hyperactivities on pathogenesis,and the root and branch of movement qi on pathogenesis.Liu's understanding of the pathogenesis of six qi and the philosophical thought of"water is good and fire is evil"mainly influenced the creation of Liu Wansu's"fire theory".The influence of movement qi theory on Liu Wansu's clinical diagnosis and treatment thoughts is mainly reflected in the classification of viscera,meridian and collateral diseases based on the theory of root and branch of middle qi,the diagnosis of pulses based on movement qi theory,the deduction of disease transmission and change using movement qi thinking,and the preparation of medicines based on qi.Liu Wansu initiated the innovation and debate of medical theory in the Jin and Yuan Dynasties,and had a profound impact on the rise of warm febrile diseases in the Ming and Qing Dynasties.
8.Intervention effect of transcranial direct current stimulation,transcranial magnetic stimulation and music combined stimulation on mental fatigue
Zhenfeng REN ; Yong CAO ; Kaiyu MOU ; Lizhi WANG ; Huiquan WANG ; Peng ZHANG ; Yanjing WANG ; Xun BI ; Changhua JIANG
Space Medicine & Medical Engineering 2024;35(2):105-111
Objective This paper investigates the effect of a multi-physical field fusion intervention based on transcranial direct current stimulation(tDCS),transcranial magnetic stimulation(TMS)and music on mental fatigue.Methods After fatigue induction,10 subjects received blank group stimulation,music group stimulation and tDCS-TMS-Music stimulation,respectively.tDCS stimulation sites were located in the bilateral frontal regions of the subjects,and TMS stimulation sites were located in the bilateral occipital regions of the hindbrain.Heart rate variability and reaction performance were measured before and after each intervention to determine the elimination effect of different intervention programs on mental fatigue.Results Compared with the control group,the tDCS-TMS-Music group showed significantly greater improvements in subjective mental workload,response performance,and heart rate variability.Conclusion The results of this study support that tDCS-TMS-Music can effectively alleviate mental fatigue induced by long-term cognitive performance tasks,and the intervention effect is better than music intervention and resting-state relief at the same time.
9.Prevalence and genetic characteristics of Cryptosporidium infections among HIV-positive individuals in Jiangxi Province
Zhuhua HU ; Liang LU ; Yingfang YU ; Lin LI ; Wei WANG ; Guoyin FAN ; Changhua FENG ; Yangyun ZHENG ; Guohua PENG
Chinese Journal of Schistosomiasis Control 2024;36(6):637-642
Objective To investigate the prevalence of Cryptosporidium infection and the distribution of parasite species and genotypes among HIV-positive individuals in Jiangxi Province. Methods HIV-positive individuals' sociodemographic and clinical data were collected from three AIDS designated hospitals in Jiangxi Province from January 2022 to March 2023. Subjects' stool samples were collected, and genomic DNA was extracted from stool samples. Nested PCR assay was performed based on the small subunit ribosomal RNA (SSU rRNA) gene of Cryptosporidium, and Cryptosporidium gp60 gene was amplified in stool samples positive for the SSU rRNA gene. The second-round PCR amplification product was checked with 1.5% agarose gel electrophoresis, and the products of suspected positive amplifications were sequenced, followed by sequence alignment. The phylogenetic tree was created using the Neighbor-Joining method with the software MEGA 11.0, to characterize the species, genotypes and sub-genotypes of Cryptosporidium. Results A total of 382 HIV-positive individuals were enrolled, with two cases identified with Cryptosporidium infection (0.52% prevalence), and both cases had no abdominal pain or diarrhea. Following sequencing and sequence alignment, the gene sequences of these two Cryptosporidium isolates shared 99.76% and 99.88% similarity with the gene sequence of C. meleagridis isolates. Phylogenetic analysis based on the Cryptosporidium SSU rRNA gene sequence identified the species of these two Cryptosporidium-positive stool samples as C. meleagridis. Following nested PCR amplification of the Cryptosporidium gp60 gene, sequencing and sequence alignment, the two C. meleagridis isolates were characterized as III eA17G2R1 and III bA25G1R1a sub-genotypes, and the sub-genotype III bA25G1R1a was firstly described in humans. Conclusion The prevalence of Cryptosporidium is low among HIV-positive individuals in Jiangxi Province. The likelihood of Cryptosporidium infection cannot be neglected among HIV-positive individuals without diarrhea.
10.Intratumoral and peritumoral CT radiomics combined with clinical features for predicting lymphovascular invasion of early lung adenocarcinoma
Changhua XU ; Miao HE ; Jian WANG
Chinese Journal of Medical Imaging Technology 2024;40(10):1509-1513
Objective To observe the value of intratumoral and peritumoral CT radiomics combined with clinical features for preoperative predicting lymphovascular invasion(LVI)of early lung adenocarcinoma.Methods Totally 252 patients with stage Ⅰ-Ⅱa lung adenocarcinoma were retrospectively enrolled and were divided into positive group(n=63)and negative group(n=189)according to LVI or not,also into training set(n=201)and test set(n=51)at a ratio of 8∶2.Clinical data and CT findings being significantly different between groups were included in multivariate logistic regression analysis to screen independent predictors of early lung adenocarcinoma LVI and to construct CT-clinical model.The best radiomics features were extracted and screened in ROI of tumor(ROI1)and outward of 3(ROI2),5(ROI3)and 7 mm(ROI4)with automatic delineation and expanding algorithm,respectively.K-nearest neighbor(KNN),support vector machine(SVM),decision tree(DT),random forest(RF)and logistic regression(LR)algorithms were used to construct radiomics models.The best classifier algorithm and ROI which could provide more effective radiomics information were selected to construct the best radiomics model,which was used to construct the combined model combining with CT-clinical model.Receiver operating characteristic curves were drawn,and the areas under the curves(AUC)were calculated to evaluate the efficacy of the above models for preoperative predicting early lung adenocarcinoma LVI.Results Solid lesion and CT-N+stage were both independent risk factors for early lung adenocarcinoma LVI(both P<0.05).Peritumor 5 mm volume(GTPV5)was obtained based on ROI3,and the best radiomics model was the model established based on 14 optimal radiomics feature selected from RFGTPV5.AUC of CT-clinical model,RFGPTV5 model and combined model for preoperative predicting early lung adenocarcinoma LVI was 0.875,0.908 and 0.917 in training set,while was 0.831,0.853 and 0.862 in test set,respectively.Conclusion Intratumoral and peritumoral CT radiomics combined with clinical features had good efficacy for preoperative predicting LVI of early lung adenocarcinoma.Intratumor and peritumor 5 mm ROI could provide more valuable information.

Result Analysis
Print
Save
E-mail