1.Identification of Hypoxia-specific Transcripts in Liver Cancer Cells via Nanopore Long-read Sequencing
Li GAO ; Shengqi SHEN ; Ping GAO
Journal of Sun Yat-sen University(Medical Sciences) 2025;46(1):88-97
ObjectiveLeveraging the advanced capabilities of nanopore long-read sequencing technology, our study undertook a comprehensive analysis of the distinct transcriptomic alterations occurring in normal liver parenchymal cells and liver cancer cells subjected to hypoxic conditions. The primary goal was to elucidate the underlying mechanisms governing tumor cell survival and metastasis in low-oxygen environments, thereby paving the way for innovative targeted cancer therapies. MethodsThe normal liver parenchymal cell line THLE-3 and the hepatocellular carcinoma cell line Hep3B were chosen as the focal points of this investigation. Following a 48-hour incubation period in both normoxic and hypoxic conditions, total RNA was extracted from these cells. Subsequently, we employed nanopore sequencing technology to conduct a high-throughput, high-fidelity analysis of the transcriptomes of these two cell lines across different oxygen levels. ResultsThis study established a hypoxic transcriptome dataset using third-generation nanopore sequencing technology, achieving an unprecedented level of sequencing accuracy. By conducting a Gene Ontology (GO) enrichment analysis, we systematically identified and explored the key biological pathways associated with the hypoxic response (P<0.05). Furthermore, we integrated molecular dynamics simulation techniques to gain deeper insights into the dynamic structural changes of Solute Carrier Family 1 Member 5 (SLC1A5) during the translation of hypoxic-specific subtypes, providing direct evidence to elucidate its functional regulation. ConclusionThe application of nanopore long-read sequencing technology has proven to be a powerful tool, not only successfully capturing the distinctive expression patterns and specific subtypes of mRNA under hypoxic conditions, but also offering robust technical support for delving into the intricate transcriptomic landscape of hypoxic microenvironments. By further integrating protein structure simulations and molecular dynamics, we have proposed novel avenues for exploring protein structures in hypoxic microenvironments. The findings of this study have significantly enriched the field of hypoxic-specific transcriptomics, providing a more reliable data foundation for investigating hypoxic-specific protein structures. Moreover, these discoveries have unveiled potential hypoxic-specific targets that could be harnessed for the development of future targeted cancer treatment strategies.
2.Classification of bladder cancer based on immune cell infiltration and construction of a risk prediction model for prognosis.
Guicao YIN ; Shengqi ZHENG ; Wei ZHANG ; Xin DONG ; Lezhong QI ; Yifan LI
Journal of Zhejiang University. Medical sciences 2024;():1-11
OBJECTIVES:
To classify bladder cancer based on immune cell infiltration score and to construct a risk assessment model for prognosis of patients.
METHODS:
The transcriptome data and data of breast cancer patients were obtained from the TCGA database. The single sample gene set enrichment analysis was used to calculate the infiltration scores of 16 immune cells. The classification of breast cancer patients was realized by unsupervised clustering, and the sensitivity of patients with different types to immunotherapy and chemotherapy was analyzed. The key modules significantly related to the infiltration of key immune cells were identified by weighted correlation network analysis (WGCNA), and the key genes in the modules were extracted. A risk scoring model and a nomogram for risk assessment of prognosis for bladder cancer patients were constructed and verified.
RESULTS:
The immune cell infiltration scores of normal tissues and tumor tissues were calculated, and B cells, mast cells, neutrophils, T helper cells and tumor infiltrating lymphocytes were determined to be the key immune cells of bladder cancer. Breast cancer patients were clustered into two groups (Cluster 1 and Custer 2) based on immune cell infiltration scores. Compared with patients with Cluster 1, patients with Cluster 2 were more likely to benefit from immunotherapy (P<0.05), and patients with Cluster 2 were more sensitive to Enbeaten, Docetaxel, Cyclopamine, and Akadixin (P<0.05). WGCNA screened out 35 genes related to key immune cells, and 4 genes (GPR171, HOXB3, HOXB5 and HOXB6) related to the prognosis of bladder cancer were further screened by LASSO Cox regression. The areas under the ROC curve (AUC) of the bladder cancer prognosis risk scoring model based on these 4 genes to predict the 1-, 3- and 5-year survival of patients were 0.735, 0.765 and 0.799, respectively. The nomogram constructed by combining risk score and clinical parameters has high accuracy in predicting the 1-, 3-, and 5-year overall survival of bladder cancer patients.
CONCLUSIONS
According to the immune cell infiltration score, bladder cancer patients can be classified. And the bladder cancer prognosis risk scoring model and nomogram based on key immune cell-related genes have high accuracy in predicting the prognosis of bladder cancer patients.
3.Classification of bladder cancer based on immune cell infiltration and construction of a risk prediction model for prognosis
Guicao YIN ; Shengqi ZHENG ; Wei ZHANG ; Xin DONG ; Lezhong QI ; Yifan LI
Journal of Zhejiang University. Medical sciences 2024;53(1):47-57
Objective:To classify bladder cancer based on immune cell infiltration score and to construct a prognosis assessment model of patients with bladder cancer.Methods:The transcriptome data and clinical data of breast cancer patients were obtained from the The Cancer Genome Atlas(TCGA)database.Single sample gene set enrichment analysis was used to calculate the infiltration scores of 16 immune cells.The classification of breast cancer patients was achieved by unsupervised clustering,and the sensitivity of patients with different types to immunotherapy and chemotherapy was analyzed.The key modules significantly related to the infiltration of key immune cells were identified by weighted correlation network analysis(WGCNA),and the key genes in the modules were identified.A risk scoring model and a nomogram for prognosis assessment of bladder cancer patients were constructed and verified.Results:B cells,mast cells,neutrophils,T helper cells and tumor infiltrating lymphocytes were determined to be the key immune cells of bladder cancer.The patients were clustered into two groups(Cluster 1′ and Custer 2)based on immune cell infiltration scores.Compared with patients with Cluster 1′,patients with Cluster 2 were more likely to benefit from immunotherapy(P<0.05),and patients with Cluster 2 were more sensitive to Enbeaten,Docetaxel,Cyclopamine,and Akadixin(P<0.05).35 genes related to key immune cells were screened out by WGCNA and 4 genes(GPR171,HOXB3,HOXB5 and HOXB6)related to the prognosis of bladder cancer were further screened by LASSO Cox regression.The areas under the ROC curve(AUC)of the bladder cancer prognosis risk scoring model based on these 4 genes to predict the 1-,3-and 5-year survival of patients were 0.735,0.765 and 0.799,respectively.The nomogram constructed by combining risk score and clinical parameters has high accuracy in predicting the 1-,3-,and 5-year overall survival of bladder cancer patients.Conclusions:According to the immune cell infiltration score,bladder cancer patients can be classified.Furthermore,bladder cancer prognosis risk scoring model and nomogram based on key immune cell-related genes have high accuracy in predicting the prognosis of bladder cancer patients.
4.Classification of bladder cancer based on immune cell infiltration and construction of a risk prediction model for prognosis
Guicao YIN ; Shengqi ZHENG ; Wei ZHANG ; Xin DONG ; Lezhong QI ; Yifan LI
Journal of Zhejiang University. Medical sciences 2024;53(1):47-57
Objective:To classify bladder cancer based on immune cell infiltration score and to construct a prognosis assessment model of patients with bladder cancer.Methods:The transcriptome data and clinical data of breast cancer patients were obtained from the The Cancer Genome Atlas(TCGA)database.Single sample gene set enrichment analysis was used to calculate the infiltration scores of 16 immune cells.The classification of breast cancer patients was achieved by unsupervised clustering,and the sensitivity of patients with different types to immunotherapy and chemotherapy was analyzed.The key modules significantly related to the infiltration of key immune cells were identified by weighted correlation network analysis(WGCNA),and the key genes in the modules were identified.A risk scoring model and a nomogram for prognosis assessment of bladder cancer patients were constructed and verified.Results:B cells,mast cells,neutrophils,T helper cells and tumor infiltrating lymphocytes were determined to be the key immune cells of bladder cancer.The patients were clustered into two groups(Cluster 1′ and Custer 2)based on immune cell infiltration scores.Compared with patients with Cluster 1′,patients with Cluster 2 were more likely to benefit from immunotherapy(P<0.05),and patients with Cluster 2 were more sensitive to Enbeaten,Docetaxel,Cyclopamine,and Akadixin(P<0.05).35 genes related to key immune cells were screened out by WGCNA and 4 genes(GPR171,HOXB3,HOXB5 and HOXB6)related to the prognosis of bladder cancer were further screened by LASSO Cox regression.The areas under the ROC curve(AUC)of the bladder cancer prognosis risk scoring model based on these 4 genes to predict the 1-,3-and 5-year survival of patients were 0.735,0.765 and 0.799,respectively.The nomogram constructed by combining risk score and clinical parameters has high accuracy in predicting the 1-,3-,and 5-year overall survival of bladder cancer patients.Conclusions:According to the immune cell infiltration score,bladder cancer patients can be classified.Furthermore,bladder cancer prognosis risk scoring model and nomogram based on key immune cell-related genes have high accuracy in predicting the prognosis of bladder cancer patients.
5.Clinical efficacy of tirofiban versus ateplase in patients with minor stroke
Shengjie HU ; Shengqi FU ; Lili ZHU ; Haoran LI ; Meng YU ; Sisen ZHANG
Chinese Journal of Geriatric Heart Brain and Vessel Diseases 2024;26(10):1178-1181
Objective To investigate the clinical efficacy and safety of tirofiban and rt-PA alteplase in the treatment of minor stroke patients.Methods A total of 171 patients with minor stroke ad-mitted to Department of Neurology of Zhengzhou People's Hospital from January 2021 to January 2024 were prospectively and continuously enrolled,and were randomly divided into tirofiban group(84 cases)and rt-PA group(87 cases).The tirofiban group received intravenous infusion of tirofiban but not intravenous thrombolysis therapy.The rt-PA group was treated with intravenous thrombolysis.The 90-day mRS score was observed in all patients.NIHSS was used to score the improvement of neurological function.3-month all-cause death was observed during follow-up.Results The tirofiban group had a significant larger proportion of mRS score of 0-1 at 90 d(92.86%vs 82.76%,P<0.05),lower NIHSS scores at 24 h and 7 d after treatment and smaller proportion of early neurological deterioration than the rt-PA group(P<0.05).Larger proportion of mRS score of 0-2 in the 90 day and slightly smaller proportion of the score of 4-6 at 90 d were observed in the tirofiban group than the rt-PA group(P>0.05).There were no statistical difference in the incidence of 3-month all-cause death between the two groups(P>0.05).Conclusion Compared with rt-PA,tirofiban can significantly improve the clinical prognosis of pa-tients with minor stroke,reduce the risk of early neurological deterioration,and has higher safety.
6.Association between the triglyceride-glucose index and the incidence of nephrolithiasis in male individuals
Shengqi ZHENG ; Tianchi HUA ; Guicao YIN ; Wei ZHANG ; Ye YAO ; Yifan LI
Journal of Peking University(Health Sciences) 2024;56(4):610-616
Objective:To analyze the association between the triglyceride-glucose(TyG)index and the risk of nephrolithiasis across various demographic and clinical subgroups,aiming to enhance early di-agnosis and treatment of nephrolithiasis and promote personalized care in diverse populations.Methods:This cross-sectional study analyzed the medical records of 84 968 adults,stratified into three categories(low,middle,high)according to their TyG index scores.To evaluate the association between the TyG index and nephrolithiasis risk,multivariable Logistic regression models were employed,adjusting for po-tential confounders.Additionally,piecewise linear regression models were used to investigate the non-linear dynamics of the TyG index's relationship with nephrolithiasis risk.Subgroup analyses were per-formed to explore variations in the effects of the TyG index across different demographic and clinical populations.Results:Increasing TyG index was associated with a higher risk of nephrolithiasis,rising from 4.36%in the low group to 8.96%in the high group(P<0.001).In adjusted models,males in the middle and high TyG index categories demonstrated significantly elevated risks of nephrolithiasis,with odds ratios of 1.18(95%CI:1.07-1.31,P=0.002)and 1.29(95%CI:1.15-1.45,P<0.001),respectively.Conversely,in females,the association was not statistically significant post-adjustment(OR=0.98,95%CI:0.82-1.16,P=0.778).Among males,for each unit increment in the TyG index be-low the critical threshold of 8.98,there was a notable 40%escalation in the risk of developing nephroli-thiasis(OR=1.40,95%CI:1.24-1.58,P<0.001).Surpassing this threshold,the TyG index no longer conferred a significant increase in risk(OR=0.91,95%CI:0.78-1.06,P=0.24).Subgroup analyses indicated that this association remained stable regardless of age,BMI,or hypertension status.Conclusion:The TyG index is positively associated with the risk of nephrolithiasis in males,demonstra-ting a nonlinear dose-response relationship that becomes especially pronounced at certain index levels.This biomarker could potentially serve as a valuable clinical tool for identifying males who are at a high risk of developing nephrolithiasis,thereby enabling targeted preventive strategies.Further research is urgently needed to explore the underlying mechanisms and to verify the applicability of these results across different populations.
7.Classification of bladder cancer based on immune cell infiltration and construction of a risk prediction model for prognosis
Guicao YIN ; Shengqi ZHENG ; Wei ZHANG ; Xin DONG ; Lezhong QI ; Yifan LI
Journal of Zhejiang University. Medical sciences 2024;53(1):47-57
Objective:To classify bladder cancer based on immune cell infiltration score and to construct a prognosis assessment model of patients with bladder cancer.Methods:The transcriptome data and clinical data of breast cancer patients were obtained from the The Cancer Genome Atlas(TCGA)database.Single sample gene set enrichment analysis was used to calculate the infiltration scores of 16 immune cells.The classification of breast cancer patients was achieved by unsupervised clustering,and the sensitivity of patients with different types to immunotherapy and chemotherapy was analyzed.The key modules significantly related to the infiltration of key immune cells were identified by weighted correlation network analysis(WGCNA),and the key genes in the modules were identified.A risk scoring model and a nomogram for prognosis assessment of bladder cancer patients were constructed and verified.Results:B cells,mast cells,neutrophils,T helper cells and tumor infiltrating lymphocytes were determined to be the key immune cells of bladder cancer.The patients were clustered into two groups(Cluster 1′ and Custer 2)based on immune cell infiltration scores.Compared with patients with Cluster 1′,patients with Cluster 2 were more likely to benefit from immunotherapy(P<0.05),and patients with Cluster 2 were more sensitive to Enbeaten,Docetaxel,Cyclopamine,and Akadixin(P<0.05).35 genes related to key immune cells were screened out by WGCNA and 4 genes(GPR171,HOXB3,HOXB5 and HOXB6)related to the prognosis of bladder cancer were further screened by LASSO Cox regression.The areas under the ROC curve(AUC)of the bladder cancer prognosis risk scoring model based on these 4 genes to predict the 1-,3-and 5-year survival of patients were 0.735,0.765 and 0.799,respectively.The nomogram constructed by combining risk score and clinical parameters has high accuracy in predicting the 1-,3-,and 5-year overall survival of bladder cancer patients.Conclusions:According to the immune cell infiltration score,bladder cancer patients can be classified.Furthermore,bladder cancer prognosis risk scoring model and nomogram based on key immune cell-related genes have high accuracy in predicting the prognosis of bladder cancer patients.
8.Classification of bladder cancer based on immune cell infiltration and construction of a risk prediction model for prognosis
Guicao YIN ; Shengqi ZHENG ; Wei ZHANG ; Xin DONG ; Lezhong QI ; Yifan LI
Journal of Zhejiang University. Medical sciences 2024;53(1):47-57
Objective:To classify bladder cancer based on immune cell infiltration score and to construct a prognosis assessment model of patients with bladder cancer.Methods:The transcriptome data and clinical data of breast cancer patients were obtained from the The Cancer Genome Atlas(TCGA)database.Single sample gene set enrichment analysis was used to calculate the infiltration scores of 16 immune cells.The classification of breast cancer patients was achieved by unsupervised clustering,and the sensitivity of patients with different types to immunotherapy and chemotherapy was analyzed.The key modules significantly related to the infiltration of key immune cells were identified by weighted correlation network analysis(WGCNA),and the key genes in the modules were identified.A risk scoring model and a nomogram for prognosis assessment of bladder cancer patients were constructed and verified.Results:B cells,mast cells,neutrophils,T helper cells and tumor infiltrating lymphocytes were determined to be the key immune cells of bladder cancer.The patients were clustered into two groups(Cluster 1′ and Custer 2)based on immune cell infiltration scores.Compared with patients with Cluster 1′,patients with Cluster 2 were more likely to benefit from immunotherapy(P<0.05),and patients with Cluster 2 were more sensitive to Enbeaten,Docetaxel,Cyclopamine,and Akadixin(P<0.05).35 genes related to key immune cells were screened out by WGCNA and 4 genes(GPR171,HOXB3,HOXB5 and HOXB6)related to the prognosis of bladder cancer were further screened by LASSO Cox regression.The areas under the ROC curve(AUC)of the bladder cancer prognosis risk scoring model based on these 4 genes to predict the 1-,3-and 5-year survival of patients were 0.735,0.765 and 0.799,respectively.The nomogram constructed by combining risk score and clinical parameters has high accuracy in predicting the 1-,3-,and 5-year overall survival of bladder cancer patients.Conclusions:According to the immune cell infiltration score,bladder cancer patients can be classified.Furthermore,bladder cancer prognosis risk scoring model and nomogram based on key immune cell-related genes have high accuracy in predicting the prognosis of bladder cancer patients.
9.Classification of bladder cancer based on immune cell infiltration and construction of a risk prediction model for prognosis
Guicao YIN ; Shengqi ZHENG ; Wei ZHANG ; Xin DONG ; Lezhong QI ; Yifan LI
Journal of Zhejiang University. Medical sciences 2024;53(1):47-57
Objective:To classify bladder cancer based on immune cell infiltration score and to construct a prognosis assessment model of patients with bladder cancer.Methods:The transcriptome data and clinical data of breast cancer patients were obtained from the The Cancer Genome Atlas(TCGA)database.Single sample gene set enrichment analysis was used to calculate the infiltration scores of 16 immune cells.The classification of breast cancer patients was achieved by unsupervised clustering,and the sensitivity of patients with different types to immunotherapy and chemotherapy was analyzed.The key modules significantly related to the infiltration of key immune cells were identified by weighted correlation network analysis(WGCNA),and the key genes in the modules were identified.A risk scoring model and a nomogram for prognosis assessment of bladder cancer patients were constructed and verified.Results:B cells,mast cells,neutrophils,T helper cells and tumor infiltrating lymphocytes were determined to be the key immune cells of bladder cancer.The patients were clustered into two groups(Cluster 1′ and Custer 2)based on immune cell infiltration scores.Compared with patients with Cluster 1′,patients with Cluster 2 were more likely to benefit from immunotherapy(P<0.05),and patients with Cluster 2 were more sensitive to Enbeaten,Docetaxel,Cyclopamine,and Akadixin(P<0.05).35 genes related to key immune cells were screened out by WGCNA and 4 genes(GPR171,HOXB3,HOXB5 and HOXB6)related to the prognosis of bladder cancer were further screened by LASSO Cox regression.The areas under the ROC curve(AUC)of the bladder cancer prognosis risk scoring model based on these 4 genes to predict the 1-,3-and 5-year survival of patients were 0.735,0.765 and 0.799,respectively.The nomogram constructed by combining risk score and clinical parameters has high accuracy in predicting the 1-,3-,and 5-year overall survival of bladder cancer patients.Conclusions:According to the immune cell infiltration score,bladder cancer patients can be classified.Furthermore,bladder cancer prognosis risk scoring model and nomogram based on key immune cell-related genes have high accuracy in predicting the prognosis of bladder cancer patients.
10.Classification of bladder cancer based on immune cell infiltration and construction of a risk prediction model for prognosis
Guicao YIN ; Shengqi ZHENG ; Wei ZHANG ; Xin DONG ; Lezhong QI ; Yifan LI
Journal of Zhejiang University. Medical sciences 2024;53(1):47-57
Objective:To classify bladder cancer based on immune cell infiltration score and to construct a prognosis assessment model of patients with bladder cancer.Methods:The transcriptome data and clinical data of breast cancer patients were obtained from the The Cancer Genome Atlas(TCGA)database.Single sample gene set enrichment analysis was used to calculate the infiltration scores of 16 immune cells.The classification of breast cancer patients was achieved by unsupervised clustering,and the sensitivity of patients with different types to immunotherapy and chemotherapy was analyzed.The key modules significantly related to the infiltration of key immune cells were identified by weighted correlation network analysis(WGCNA),and the key genes in the modules were identified.A risk scoring model and a nomogram for prognosis assessment of bladder cancer patients were constructed and verified.Results:B cells,mast cells,neutrophils,T helper cells and tumor infiltrating lymphocytes were determined to be the key immune cells of bladder cancer.The patients were clustered into two groups(Cluster 1′ and Custer 2)based on immune cell infiltration scores.Compared with patients with Cluster 1′,patients with Cluster 2 were more likely to benefit from immunotherapy(P<0.05),and patients with Cluster 2 were more sensitive to Enbeaten,Docetaxel,Cyclopamine,and Akadixin(P<0.05).35 genes related to key immune cells were screened out by WGCNA and 4 genes(GPR171,HOXB3,HOXB5 and HOXB6)related to the prognosis of bladder cancer were further screened by LASSO Cox regression.The areas under the ROC curve(AUC)of the bladder cancer prognosis risk scoring model based on these 4 genes to predict the 1-,3-and 5-year survival of patients were 0.735,0.765 and 0.799,respectively.The nomogram constructed by combining risk score and clinical parameters has high accuracy in predicting the 1-,3-,and 5-year overall survival of bladder cancer patients.Conclusions:According to the immune cell infiltration score,bladder cancer patients can be classified.Furthermore,bladder cancer prognosis risk scoring model and nomogram based on key immune cell-related genes have high accuracy in predicting the prognosis of bladder cancer patients.

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