1.Molecular mechanism of Ael blood group caused by ABO B.01-O.01.02 gene recombination
Xiaoyun BU ; Jing HAI ; Jiancheng LIU
Chinese Journal of Blood Transfusion 2026;39(4):534-539
Objective: To analyze the serological and molecular biological characteristics of one case with Ael subtype. Methods: ABO serological typing was performed using the tube method. ABO genotyping was conducted by sequence-specific primer polymerase chain reaction (PCR-SSP). The genotype was identified by Oxford Nanopore third-generation sequencing (TGS). Pymol, Polyphen-2, PROVEAN, and DUET were used to predict the effects of mutations on protein structure and function. Results: Serological testing identified an Ael subtype. PCR-SSP genotyping showed an A/O2 profile. TGS obtained two full-length ABO haplotype sequences: the first was ABO
O.01.02, and the second was a recombinant haplotype of ABO
B.01-O.01.02, with the recombination breakpoint mapped between c. 357-39 and c. 526G>C. Mutations on this recombinant allele included c. 297A>G, c. 646T>A, c. 681G>A, c. 771C>T, and c. 829G>A, among which c. 646T>A (p. Phe216Ile) and c. 829G>A (p. Val277Met) were two functional amino acid substitution sites. Protein structure modeling revealed alterations in local conformation and hydrogen bond network, and functional prediction indicated decreased protein stability. Conclusion: A recombination between ABO alleles B.01 and O.01.02 was identified in the region spanning intron 6 to exon 7, resulting in a B.01-O.01.02 recombinant gene. This recombinant leads to key amino acid substitutions in the B glycosyltransferase, causing local structural changes and decreased stability of the enzyme protein, ultimately manifesting as the Ael blood group phenotype.
2.Biological functions of SMYD5 and its role in disease
Fangfang ZHANG ; Haodan LIU ; Ruirui YANG ; Xuan LI ; Changli WANG ; Guangbin YE ; Xiaoyun BIN
Acta Universitatis Medicinalis Anhui 2026;61(4):782-788
SMYD5 is a ribosomal methyltransferase with SET and MYND structural domains, which is a member of the SMYD family and is expressed in a variety of tissues, including ovary and testis. This enzyme participates in biological processes such as gene expression regulation, cell development and differentiation, and maintenance of genomic stability through ribosomal protein methylation modification. In recent years, research on SMYD5 has increased in cancers including hepatocellular carcinoma, gastric adenocarcinoma, and lung cancer. Studies have revealed that SMYD5 exhibits high expression levels in various diseases including hepatocellular carcinoma, gastric adenocarcinoma, lung cancer, and inflammatory bowel disease, influencing the progression of these conditions. This review summarizes the role of SMYD5 in hepatocellular carcinoma, inflammatory bowel disease, and other biological functions, aiming to provide a reference for related disease research.
3.Establishment and application of a red blood cell gene database in regular blood donors
Zhihui FENG ; Xiaoyun CHI ; Bin HU ; Li LIU ; Dawei LI ; Shutao PANG
Chinese Journal of Blood Transfusion 2025;38(8):1056-1062
Objective: To establish a "regular blood donor red blood cell gene database"(hereafter referred to as the "database") by applying molecular biology techniques for red blood cell antigens genotyping and utilizing information technology software, and to determine the significance and application value of this "database" in precise red blood cell transfusion. Methods: Fifteen antigens [C, c, E, e, M, N, S, s, Fy (a), Fy (b), Jk (a), Jk (b), Le (a), Le (b), P1] across six blood group systems (RHCE, MNS, FY, JK, Lewis and P1PK) were detected among 9 426 regular blood donors using the TaqMan-MGB method combined with an improved U-shaped microplate approach. With the assistance of information technology software, the "database" was integrated into the overall inventory management system of the blood supply chain. This enabled comprehensive management of regular blood donor and patient information, test results, specific antigen screening for regular blood donors, graded antigen matching between donors and patients, and rare blood type donor records. Results: The TaqMan-MGB method successfully detected paired antigens (C/c, E/e, M/N, S/s, Fy
/Fy
, Jk
/Jk
) within a single reaction well using a standardized PCR amplification protocol. This method provided a reliable testing solution for clinical institutions and empowered blood collection and supply organizations with high-throughput screening capabilities. In the blood supply chain, genotyped red blood cells accounted for 13.2% (721/5 462 U) of the total inventory, with 95.34% (348/365) originating from donors who donated two units of blood. Moreover, the “database” fulfilled 94.06% (443/471 U) of compatible transfusion requirements from medical institutions and effectively managed rare blood type donors. Conclusion: The establishment of the "database" facilitated the transition of blood compatibility testing from traditional serological methods to molecular biology-based gold standard techniques, significantly advancing the implementation of precise transfusion strategies based on multi-antigen matching between donors and patients.
4.Ethical considerations of using the deceased as medical research subjects
Zhaolong LU ; Xiaoyun CHEN ; Yongchuan CHEN ; Mengjie YANG ; Qiang LIU ; Hui JIANG ; Zhonglin CHEN
Chinese Medical Ethics 2025;38(11):1447-1452
The relevant laws and regulations regarding the utilization of the deceased as medical research subjects are not yet fully developed in China nowadays. Taking the deceased as research subjects as a starting point, this paper discussed the definition of the deceased and the scope of their interest protection from multiple perspectives. It posited that the scope of interest protection for the deceased encompassed two components: spiritual personality interests and material personality interests represented by the remains. The spiritual personality interests of the deceased included identification information such as name, portrait, reputation, honor, privacy, and personal information, as well as medical and health information. The personal information of the deceased was not directly affected by the individual’s life and death status and remained relatively independent. In terms of ethical review, the research team approached from two perspectives: the remains and the personal information of the deceased. Based on the standard of whether the research subjects involve a human body, research with the remains of the deceased as the medical research subjects was classified as non-clinical research. According to the standard of whether a human body is clinically operated, research with the personal information of the deceased (including medical and health information) as the medical research subjects was recognized as clinical research without human research operation. This approach provided evidence for the application of existing laws and regulations in ethical review and record management. The ethical review of investigator-initiated clinical research conducted in medical and health institutions, as well as the regulatory conditions for exemption from ethical review, were examined. The forms, content, and acquisition of informed consent were summarized, and the risk-benefit characteristics of the research activity were evaluated, with a view to providing a basis for the smooth and compliant implementation of research activities involving the deceased as medical research subjects.
5.Effect of Thunberg Fritillary extract combination with acute inflammatory stimulation on non-small cell lung cancer
Hanxue WANG ; Shuyan XING ; Jia YANG ; Xiaoyun LIU ; Dongxue YE ; Guoying ZHANG ; Rong RONG ; Yong YANG
Chinese Journal of Immunology 2025;41(8):1800-1805
Objective:To study the growth inhibition of Thunberg Fritillary extract on non-small cell lung cancer.Methods:The Thunberg Fritillary extract was prepared and characterized by UPLC-QE/MS.Replicated Lewis lung carcinoma ectopic tumor-bear-ing mouse model,yeast injection induced acute inflammation,compared the effect of Thunberg Fritillary extract combination with acute inflammation on the growth,tumor volume and tumor suppression rate of Lewis lung carcinoma mice,and determine the content of inflammatory factors by the flow CBA method(IL-6,IL-1β,IL-1α,IL-10,IL-27,IL-17A,IL-12p70,IL-23,TNF-α,IFN-γ,IFN-β,GM-CSF,MCP-1).Results:The inhibition of Lewis lung carcinoma mice was similar to that of cisplatin alone,and the tumor suppression rate was 35%;the tumor suppression rate of Thunberg Fritillary extract combined with acute inflammatory stimulation of yeast was 62%,1.8 times that of cisplatin alone.The decrease in the expressions of cytokines IL-23,MCP-1 after acute inflammatory stimulation in yeast was associated with tumor suppression;while the increased expressions of IL-6,IL-1β,IL-1α,IL-10,IL-27,IL-17A,IL-12p70,TNF-α,IFN-γ,IFN-β and GM-CSF cytokines were associated with tumor suppression.Conclusion:The Thun-berg Fritillary extract combination with acute inflammation can play a positive role against non-small cell lung cancer,which will pro-vide new research ideas and methods for the prevention and treatment of non-small cell lung cancer.
6.Development and implementation of a comprehensive process guidance service applet of the multi-campus hospitals
Binbin SONG ; Jun LIN ; Lei FENG ; Ying WANG ; Zhehao LIU ; Xiaoyun FENG ; Jing YANG ; Qinfen GUO ; Bingling ZHANG
Modern Hospital 2025;25(2):278-281
To address the challenges associated with traditional medical treatment modalities that hinder the efficiency of healthcare delivery,and to facilitate the sharing of medical service information across multiple campuses via mobile platforms,the First Affiliated Hospital to Zhejiang University School of Medicine has proactively leveraged digital intelligence to innovate its medical service model.This program involved the development of a comprehensive process guidance service applet on the Alipay platform specifically for outpatient services.The applet offers intelligent support services,standardizes electronic authentication processes,coordinates medical resources across various hospital locations,and establishes an integrated service delivery system that seamlessly combines online and offline interactions.This approach has optimized the outpatient treatment process,enhanced the patient experience,and fostered standardized management of medical services across multiple campuses.
7.Effect of Thunberg Fritillary extract combination with acute inflammatory stimulation on non-small cell lung cancer
Hanxue WANG ; Shuyan XING ; Jia YANG ; Xiaoyun LIU ; Dongxue YE ; Guoying ZHANG ; Rong RONG ; Yong YANG
Chinese Journal of Immunology 2025;41(8):1800-1805
Objective:To study the growth inhibition of Thunberg Fritillary extract on non-small cell lung cancer.Methods:The Thunberg Fritillary extract was prepared and characterized by UPLC-QE/MS.Replicated Lewis lung carcinoma ectopic tumor-bear-ing mouse model,yeast injection induced acute inflammation,compared the effect of Thunberg Fritillary extract combination with acute inflammation on the growth,tumor volume and tumor suppression rate of Lewis lung carcinoma mice,and determine the content of inflammatory factors by the flow CBA method(IL-6,IL-1β,IL-1α,IL-10,IL-27,IL-17A,IL-12p70,IL-23,TNF-α,IFN-γ,IFN-β,GM-CSF,MCP-1).Results:The inhibition of Lewis lung carcinoma mice was similar to that of cisplatin alone,and the tumor suppression rate was 35%;the tumor suppression rate of Thunberg Fritillary extract combined with acute inflammatory stimulation of yeast was 62%,1.8 times that of cisplatin alone.The decrease in the expressions of cytokines IL-23,MCP-1 after acute inflammatory stimulation in yeast was associated with tumor suppression;while the increased expressions of IL-6,IL-1β,IL-1α,IL-10,IL-27,IL-17A,IL-12p70,TNF-α,IFN-γ,IFN-β and GM-CSF cytokines were associated with tumor suppression.Conclusion:The Thun-berg Fritillary extract combination with acute inflammation can play a positive role against non-small cell lung cancer,which will pro-vide new research ideas and methods for the prevention and treatment of non-small cell lung cancer.
8.Cloning and Expression Analysis of a Glycosyltransferase UGT708Z1 Gene from Anemarrhena asphodeloides
Qian ZHANG ; Zhongju JI ; Zhixin LI ; Zishu DONG ; Hongning LIU ; Xiaoyun WANG ; Jia HUANG
World Science and Technology-Modernization of Traditional Chinese Medicine 2025;27(10):2800-2809
Objective To clone the glycosyltransferase gene UGT708Z1 in Anemarrhena asphodeloides and perform its bioinformatics analysis,prokaryotic expression analysis and functional characterization.Methods A candidate glycosyltransferase gene UGT708Z1 was mined and screened out from Anemarrhena asphodeloides based on the transcriptome data.According to its full-length open reading frame,the specific primers with homologous arms were designed.Subsequently,the UGT708Z1 gene was cloned by PCR.The prokaryotic expression recombinant vector pET-32a(+)-UGT708Z1 was constructed through homologous recombination technology,and the soluble target protein was obtained by prokaryotic expression and purified protein technology.Finally,the function of UGT708Z1 was identified through enzymatic reaction in vitro.Results Sequence analysis showed that the open reading frame of UGT708Z1 was 1377 bp,encoding 458 amino acids.The result of prokaryotic expression showed that UGT708Z1 successfully expressed the soluble target protein,and the purified recombinant protein was 70.86 kDa.The results of enzymatic reaction in vitro showed that UGT708Z1 had flavonoid 7-OH glycosylation activity and could catalyze icaritin to produce icariside I.In addition,UGT708Z1 also possessed the activities of catalyzing the 7-O-glycosylation of quercetin and apigenin.Conclusion In this study,a flavonol glycosyltransferase UGT708Z1 was successfully cloned and identified from Anemarrhena asphodeloides,which would lay a foundation for further analysis of flavonol glycosides biosynthesis.
9.Relationship between autism spectrum disorder-like behaviors and resilience in adolescents
Longping ZENG ; Hui WANG ; Xinzhou TANG ; Xing SU ; Liyang ZHAO ; Zhaozheng JI ; Xiaoyun GONG ; Tingni YIN ; Qinyi LIU ; Bingxi SUN ; Xue LI ; Jing LIU
Chinese Mental Health Journal 2025;39(1):26-31
Objective:To discern the association between autism-like behaviors and resilience within the ado-lescent demographic.Methods:A total of 7 063 middle school students were selected to assess ASD-like behaviors and resilience in adolescents using the Autism Spectrum Screening Questionnaire(ASSQ)as well as the Resilience Scale for Chinese Adolescent(RSCA).Subgroups bounded by P5 and P95 of the total ASSQ score,a comparative analysis of the resilience scores between these groups was executed.A correlation evaluation and linear regression a-nalysis was carried out between ASSQ and RSCA scores from all participants.Results:The RSCA scores within the high ASSQ scoring group,were inferior to those in the low scoring group.ASSQ scores were negatively correlated with RSCA scores for the full sample(Ps<0.01);Social interaction scores on the ASSQ were negatively correlated with the five-factor RSCA scores(β=-0.23,-0.27,-0.11,-0.23,-0.37,Ps<0.05).Conclusion:There was a negative association between autism spectrum disorder-like behaviors and resilience in adolescents,with more severe social interaction symptoms being associated with poorer resilience.
10.Construction and verification of pertussis infection characteristic analysis and symptom combination prediction model in patients with cough
Jingjing ZHAO ; Yamin LIU ; Rui SUO ; Ruxianguli WUMAIER ; Shuangjun LIU ; Ying LI ; Xiaoyun ZHAO
Tianjin Medical Journal 2025;53(4):434-439
Objective To investigate the prevalence and symptoms of pertussis in patients with cough,and to predict individual risk based on the combination of symptoms.Methods A total of 1 025 patients with cough or contact with pertussis patients were included.Pertussis was confirmed by nasopharyngeal swab PCR.Patients were divided into the juvenile group(278 cases)and the adult group(747 cases)according to age.The duration of cough from onset to study participation,the visual analogue(VAS)score of cough degree and the number of basic symptoms(paroxysmal cough,vomiting after cough,crowing cough,pauses in breathing after cough and fever)were compared between the two groups.The confirmed patients were further grouped by age,and the different symptoms were compared.70%of the sample was used as the training set.Based on the combination of symptoms(paroxysmal cough,post-cough vomiting,chick-crooning cough and pauses in inspirations after coughing),multivariate Logistic regression was used to establish the prediction model and draw the nomogram.30%of the sample was used as the validation set,and the receiver operating characteristic(ROC)curve was drawn.The differentiation of the area under the curve(AUC)evaluation model was calculated.The calibration degree of the model was evaluated by Hosmer-Lemeshow test,and calibration curve was drawn to evaluate the model.Results By PCR,163 cases(15.9%)were confirmed as pertussis.The juvenile group had a longer duration of cough from onset to study participation than the adult group(P<0.05).The VAS score of cough severity was higher,and the number of basic symptoms of pertussis was more(P<0.01).In confirmed cases,the proportion of paroxysmal cough,vomiting after cough,crowing cough and inspiratory pause after cough was higher in the juvenile group than that in the adult group(P<0.01).In the diagnosed cases,the incidence of paroxysmal cough and post-cough vomiting were higher in the<1-year-old group compared to the 1-9-year-old group and the≥10-year-old group(P<0.05).The combination of paroxysmal cough,vomiting after cough,crowing cough and inspiratory pause after cough was selected by Logistic regression analysis to establish a nomogram model.The AUC of this model in the training set was 0.852,and the Hosmer-Lemeshow test χ2=0.208,P=0.901,and in the verification set,the AUC was 0.899,and the Hosmer-Lemeshow test χ2=4.202,P=0.122.The predicted value in the calibration curve was very close to the theoretical value in the training set and the verification set,and the fitting degree was high.Conclusion The infection rate of pertussis is high in patients with cough.The nomogram model based on combined symptoms has a better prediction effect on pertussis differentiation,which can provide reference for the monitoring of pertussis.

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