[摘 要] 自2017年以来，已有12款嵌合抗原受体基因修饰T淋巴细胞（CAR-T细胞）产品相继被批准用于血液系统恶性肿瘤的治疗，包括复发性/难治性急性B淋巴细胞白血病、特定亚型B细胞淋巴瘤和多发性骨髓瘤。然而，CAR-T细胞疗法在应用过程中面临诸多挑战，如在治疗血液系统肿瘤中的抵抗、生产周期长、个体化/价格昂贵，在实体瘤中的肿瘤异质性强/抗原逃逸、浸润能力不足、免疫抑制微环境和反应性差等问题。随着肿瘤免疫学研究的深入和基因工程技术的发展，尝试了众多新策略来提升CAR-T细胞疗法的疗效和普适性。作者根据自身对该领域研究的认知，针对CAR-T细胞疗法的临床关键问题及其应对解决策略进行述评，为未来CAR-T细胞疗法的基础研究和临床转化提供重要思路。

Objective To evaluate the role and potential mechanism of apolipoprotein E(APOE)in drug resistance of colon cancer by bioinformatic tools and cellular experiments.Methods After downloading the microarray dataset GSE196900 from the GEO database,the online tool GEO2R was used to identify genes that were expressed differently in the drug-resistant and control groups.The differently expressed genes were then examined for Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment.The STRING database and Cytoscape software were used to build protein-protein interaction(PPI)networks and find hub genes.Hub genes'predictive significance in colon cancer was further assessed.Western blod and qRT-PCR were used to identify changes in APOE expression,whereas Transwell was used to identify changes in the colon cancer cells'capacity for invasion and migration.Results The analysis of GO and KEGG enrichment revealed that the differential genes derived from the GSE196900 dataset were primarily focused on receptor-ligand activity and cytokine-cytokine receptor interaction pathways.Using the CytoNCA plug-in in Cytoscape software,ten hub genes were obtained through PPI construction.Of these,the prognosis of the patients with colon cancer was negatively correlated with the expression of the APOE gene(P<0.05)and the overexpression of the APOE gene might significantly increase the migration and nvasivenessability of colon cancer cells(P<0.05).Conclusion The increased expression of APOE significantly promotes the migration and invasion ability of colon cancer cells,which may be one of the mechanisms by which APOE gene promotes tumor progression in the patients with colon cancer.

Objective:To explore the cause of inconsistency between the results of trisomy 7 by expanded non-invasive prenatal testing (NIPT-PLUS) and trisomy 18 by prenatal diagnosis.Methods:A pregnant woman who received genetic counseling at Jiaozuo Maternal and Child Health Care Hospital on July 5, 2020 was selected as the study subject. NIPT-PLUS, systematic ultrasound and interventional prenatal testing were carried out. The middle segment and root of umbilical cord, center and edge of the maternal and fatal surface of the placenta were sampled for the validation by copy number variation sequencing (CNV-seq).Results:The result of NIPT-PLUS indicated that the fetus has trisomy 7. Systematic ultrasound has shown multiple malformations including atrioventricular septal defect, horseshoe kidney, and rocker-bottom feet. However, QF-PCR, chromosomal karyotyping analysis, and CNV-seq of amniotic fluid samples all showed that the fetus was trisomy 18. Validation using multiple placental samples confirmed that the middle segment of the umbilical cord contains trisomy 18, the center of the placenta contained trisomy 7, and other placental sites were mosaicism for trisomy 7 and trisomy 18. Notably, the ratio of trisomy 18 became lower further away from the umbilical cord.Conclusion:The false positive results of trisomy 7 and false negative trisomy 18 by NIPT-PLUS was probably due to the existence of placental mosaicism. Strict prenatal diagnosis is required needed aneuploidy is detected by NIPT-PLUS to exclude the influence of placental mosaicisms.

Objective: To investigate the symptoms of depression and anxiety and their influencing factors in adolescents undergoing facial scar plasty, so as to provide insights into psychological interventions among them. Methods: The patients with facial scars who were 14 to 25 years old and admitted to the Department of Plastic Surgery, Hospital of Dermatology Chinese Academy of Medical Sciences and Peking Union Medical College were selected. General information and scar condition were collected through questionnaire surveys. Symptoms of depression and anxiety were assessed using the Self-rating Depression Scale (SDS) and Self-rating Anxiety Scale (SAS). The patients who scored 50 points and over in both SDS and SAS were identified as having depression and anxiety symptoms. Factors affecting depression and anxiety symptoms were identified using a multivariable logistic regression model. Results: A total of 108 adolescents undergoing facial scar plasty were surveyed, with a mean age of (19.16±2.03) years. There were 50 boys (46.30%) and 58 girls (53.70%). Depression and anxiety symptoms were detected in 62 cases, accounting for 57.41%. Multivariable logistic regression analysis showed that girls (OR=1.547, 95%CI: 1.072-2.231), unhealthy diet (OR=1.428, 95%CI: 1.120-1.820), high scores of pain (OR=1.677, 95%CI: 1.120-2.511) and high scores of scar severity (OR=1.629, 95%CI: 1.112-2.387) were associated with increased risks of depression and anxiety symptoms in adolescents undergoing facial scar plasty, while high scores of social support (OR=0.569, 95%CI: 0.348-0.931) and high scores of resilience (OR=0.465, 95%CI: 0.252-0.858) were associated with decreased risks. Conclusion Depression and anxiety symptoms are relatively prevalent in adolescents undergoing facial scar plasty, and are influenced by gender, diet, pain degree, scar severity, social support and resilience.

Background Suicidal ideation serves as a sensitive predictive indicator for non-suicidal self-injury(NSSI)behavior,and NSSI behavior brings profound effects to both mental and physical health of senior high school students.Existing studies have made exploration on the relationship among insomnia,anxiety and NSSI behavior in the general population,but the internal mechanism of NSSI behavior in senior high school students with suicidal ideation requires further study.Objective To explore the pathway of anxiety between insomnia and NSSI behavior in senior high school students,so as to provide references for the intervention on NSSI behavior in such demographic.Methods From December 10 to 15,2021,cluster sampling was adopted to select 2 572 senior high school students across three senior high schools in Hubei Province as the research objects.Assessment was conducted by using Insomnia Severity Index(ISI),Generalized Anxiety Disorder Scale-7 item(GAD-7)and Adolescents Self-Harm Scale.Spearman correlation analysis was conducted to examine the correlation among scores of scales finished by senior high school students with suicidal ideation.Model 4 from the SPSS 20.0 Process 4.2 was employed to test the mediating path of anxiety between insomnia and NSSI behavior.Results A total of 2 421 valid questionnaires(94.13%)were recovered,which revealed 554 cases(22.88%)with suicidal ideation and 408 cases(16.85%)with NSSI behavior.The scores of ISI,GAD-7 and Adolescents Self-Harm Scale of senior high school students with suicidal ideation were higher than those of students without suicidal ideation(Z=17.124,20.611,21.314,P<0.01).As correlation analysis showed,the ISI score of senior high school students with suicidal ideation was positively correlated with scores of GAD-7 and Adolescents Self-Harm Scale(r=0.646,0.354,P<0.01),and GAD-7 score was positively correlated with the score of Adolescents Self-Harm Scale(r=0.375,P<0.01).Among senior high school students with suicide ideation,anxiety acted in a mediating role between insomnia and NSSI behavior,with effect value of 0.111(95%CI:0.053～0.185),accounting for 53.88%of the total effect.Conclusion Insomnia of senior high school students with suicidal ideation can not only directly affect NSSI behavior,but also indirectly affect NSSI behavior through anxiety.

Painful diabetic peripheral neuropathy(PDPN)is a chronic complication of diabetes mellitus.The proportion of patients with PDPN is relatively high in China.At present,the latest guidelines recommend a batch of first-line analgesic drugs for PDPN treatment.Many large-scale randomized trials have confirmed the effectiveness of combination therapy.However,the pathological and physiological mechanisms of PDPN are not fully understood.The clinical treatment effect is still not ideal.This article reviews the research progress on the mechanism of PDPN occurrence.

Objective:To explore the characteristics of natural foci of hemorrhagic fever with renal syndrome (HFRS) in Gansu Province.Methods:The information of HFRS case data and rodent density monitoring data from 2012 to 2022 in Gansu Province were collected and epidemiological methods were used to analyze and investigate the characteristics of the epidemic focus.Results:A total of 869 cases of HFRS were reported, and four patients died from 2012 to 2022. The annual incidence rate is between 0.05 per 100 000 and 1.21 per 100 000. The cases were mainly distributed in the eastern, southeast, southern, and south of the central region of Gansu Province. Most cases were distributed between age 20-60, and the sex ratio was 1.85∶1 (564∶305). Most cases were farmers (61.80%, 537/869), herdsmen (19.79%,172/869) and students (6.33%, 55/869). In a wild rat-type epidemic focus,the incidence peak was from November to January of the following year. The natural rodent hosts of HFRS were Rattus norvegicus, Apodemus agrarius, and Mus musculus. The hantaan virus carriage rates were 2.79% (21/754), 0.42% (5/1 179) and 0.31% (2/643),respectively. Three epidemic foci were defined: two derived from the Pingliang and Gannan prefecture new outbreaks epidemic foci, respectively, while the other was the residue of the Dingxi epidemic focus. Conclusions:The southern, south of the central region and eastern part of Gansu Province are current key HFRS epidemic foci dominated by Rattus norvegicus, Apodemus agrarius, and Mus musculus, respectively. The virus genotype is hantaan virus. Case reporting areas should strengthen epidemic monitoring; the key epidemic areas should strengthen and implement various prevention and control measures to reduce the harm caused by HFRS.