PSMA-CAR-CIK转基因细胞体外杀伤三种前列腺癌细胞株效率的研究北大核心

目的:本研究通过检测前列腺特异性膜抗原(prostate specific membrane antigen,PSMA)-肿瘤特异性嵌合抗原受体(chimeric antigen receptor,CAR)-细胞因子诱导的杀伤细胞(cytokine induced killer cell,CIK)转基因细胞杀伤三种前列腺癌细胞株的效率,鉴定其用于后期治疗前列腺癌的可行性。方法:通过已经构建的二代PSMA-CAR慢病毒表达载体转染CIK细胞,构建PSMA-CAR-CIK转基因细胞;通过CCK8法检测CIK细胞及PSMA-CAR-CIK转基因细胞杀伤三种前列腺癌细胞株PC3、LNCaP、DU145的效率及效靶比。结果:转基因PSMA-CAR-CIK细胞构建成功;3 h~3.5 h为检测效应细胞对靶细胞细胞毒活性时与CCK8试剂孵育的最佳时间;两种效应细胞均在效靶比为10∶1、15∶1、20∶1时,杀伤率逐步增高,无统计学意义(P>0.05),但与其它组相比差异显著(P<0.05)。结论:两种效应细胞对于前列腺癌细胞的杀伤,只要效靶比达到10∶1的比例,就能起到一个较好的杀瘤效果,并且随着效应细胞的增加,其抗肿瘤能力逐步加强;转基因PSMA-CAR-CIK细胞的构建为CAR技术治疗前列腺癌的临床应用奠定了基础。     

Geographic Characteristics of Various Cancers in Yogyakarta Province,Indonesia: A Spatial Analysis at the Community Level

Background: Cancer remains a significant public health problem in Indonesia and worldwide. Yogyakarta Province has the largest number of cancer cases in Indonesia. Maps of the distribution of cancer cases are useful tools for stratification of cancer risk and for selective prevention strategies. The aim of this study was to determine the spatial distribution of cancer cases in Yogyakarta Province. Methods: Cancer patient data registered by the Yogyakarta Provincial Health Office during 2019-2020 were analysed in this study (n=9,933). To evaluate cancer pattern distributions, ArcGIS 10.2 and Excel 2016 software were used. Results: The mean participant age (± standard deviation) was 55.08 ± 15.46 years, and 79.40% were female. Breast and cervical cancer were the most frequently diagnosed, and the majority of patients were located in Sleman district. The incidence of all cancer types varied by county-level. The majority of cancer patients lived below the poverty line. Cancer screening rates were low, and screening was limited to breast and cervical cancer. Conclusion: Various types of cancers were identified in Yogyakarta, Indonesia; of them, breast and cervical cancer predominated. Most of the cancer patients were from Sleman district and economically poor areas. Geospatial techniques are useful for identifying environmental factors related to cancer and improving cancer control strategies and resource allocation.     

Mesothelial cell-derived antigen-presenting cancer-associated fibroblasts induce expansion of regulatory T cells in pancreatic cancer

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Which gastric cancer patients could benefit from staging laparoscopy? A GIRCG multicenter cohort study

BackgroundThis study aimed to investigate which gastric cancer patients could benefit the most from staging laparoscopy.MethodsA retrospective cohort study was carried out, including 316 (216 cM- and 100 cM+) gastric cancer patients who had undergone staging laparoscopy between 2010 and 2020 in seven GIRCG centers. A model including easily-accessible clinical, biochemical and pathological markers was constructed to predict the risk of carcinomatosis. ROC curve and decision curve analyses were used to verify its accuracy and net benefit.ResultsIn the cM-population staging laparoscopy could detect 67 cases who had peritoneal carcinomatosis or positive cytology, for a yield of 30.5%. In cM-patients, intestinal type tumors (0.25, 0.12–0.51; p = 0.002), cT4 tumors (2.18, 1.11–4.28; p = 0.023) and cancers of the lower third (0.31, 0.14–0.70; p = 0.004) were associated with the presence of peritoneal carcinomatosis and/or positive cytology. The ROC curve analysis of the model including the three variables showed an AUC of 0.75 (0.68–0.81, p < 0.001). The decision curve analyses showed that the model had a higher net benefit than the treating all strategy between threshold probabilities of 15 and 50%.ConclusionsStaging laparoscopy is a useful tool to address the patient with gastric cancer to the most adequate treatment. In cM-patients the assessment of the location of the tumor, the Lauren's histotype and the cT status may help in providing additional elements in indicating or not the use of staging laparoscopy.     

Pan-cancer proteomic map of 949 human cell lines

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Inter-rater Accuracy and Reliability of a Palpation Protocol of the C7 Spinous Process Comprising a Combination of 3 Traditional Palpation Techniques

ObjectiveThe purpose of this study was to determine the accuracy and intrarater reliability of a palpatory protocol based on a combination of 3 palpatory methods to identify both the C7 spinous process (C7 SP) and the factors that affect the errors and inaccuracy of palpation.MethodsTwenty-five women between the ages of 18 and 60 years were submitted to a palpation protocol of the C7 SP, and a radiopaque marker was fixed on the skin at the possible location of the vertebrae. A radiograph and a photograph of the cervical spine were obtained in the same posture by a first rater. A second rater performed the same palpation protocol and took a second photograph. The accuracy and measurement error of the palpation protocol of C7 SP were assessed through radiographic images. The inter-rater reliability was estimated by the interclass correlation coefficient and assessed using photographs of each rater. The Pearson's correlation coefficients (r), the Fisher exact test, and the χ² test were used to identify the factors associated with the error and inaccuracy of palpation.ResultsAccuracy of the C7 palpation was 76% with excellent reliability (interclass correlation coefficient = 0.99). There was a moderate correlation between weight and the measurement of palpation error (r = –0.6; P = .003). One hundred percent of inaccuracy palpation was related to the increased soft-tissue thickness (P = .005) in the cervical region.ConclusionThe palpation protocol described in this study was accurate and presented excellent reliability in identifying the C7 SP. Increased weight and dorsocervical fat pad were associated to error and palpation inaccuracy, respectively.     

Clinical presentation,management, screening and surveillance for colorectal cancer during the COVID-19 pandemic

Management of colorectal cancer (CRC) was severely affected by the changes implemented during the pandemic, and this resulted in delayed elective presentation, increased emergency presentation, reduced screening and delayed definitive therapy. This review was conducted to analyze the impact of the coronavirus disease 2019 (COVID-19) pandemic on management of CRC and to identify the changes made in order to adapt to the pandemic. We performed a literature search in PubMed, Medline, Index Medicus, EMBASE, SCOPUS, Reference Citation Analysis (https://www.referencecitationanalysis.com/) and Google Scholar using the following keywords in various combinations: Colorectal cancer, elective surgery, emergency surgery, stage upgrading, screening, surveillance and the COVID-19 pandemic. Only studies published in English were included. To curtail the spread of COVID-19 infection, there were modifications made in the management of CRC. Screening was limited to high risk individuals, and the screening tests of choice during the pandemic were fecal occult blood test, fecal immunochemical test and stool DNA testing. The use of capsule colonoscopy and open access colonoscopy was also encouraged. Blood-based tests like serum methylated septin 9 were also encouraged for screening of CRC during the pandemic. The presentation of CRC was also affected by the pandemic with more patients presenting with emergencies like obstruction and perforation. Stage migration was also observed during the pandemic with more patients presenting with more advanced tumors. The operative therapy of CRC was altered by the pandemic as more emergencies surgeries were done, which may require exteriorization by stoma. This was to reduce the morbidity associated with anastomosis and encourage early discharge from the hospital. There was also an initial reduction in laparoscopic surgical procedures due to the fear of aerosols and COVID-19 infection. As we gradually come out of the pandemic, we should remember the lessons learned and continue to apply them even after the pandemic passes.     

1 192例乳腺癌患者癌因性疲乏的调查及影响因素分析

目的了解乳腺癌患者癌因性疲乏（cancer-related fatigue， CRF）现状，并分析其影响因素。方法采用横断面调查方法，向乳腺癌患者发放调查问卷，按照IDC-10诊断标准判断是否存在CRF，根据Piper疲乏量表中文修订版（Revised Piper Fatigue Scale, RPFS）得分评价疲乏程度，调查乳腺癌患者CRF的发生情况，并分析其影响因素。结果1 192例患者完成了全部调查问卷，乳腺癌患者发生CRF为668例（占56.04%）；以轻、中度疲乏为主，分别占23.95%、55.24%，其中感觉维度得分最高。单因素分析结果显示，文化程度、乳腺癌病程、肿瘤分期、化疗周期、疼痛、上肢水肿、白细胞减少、恶心呕吐、贫血、潮热盗汗、失眠与乳腺癌患者CRF的发生有关（P＜0.05）；多因素Logistic回归分析显示，乳腺癌肿瘤分期、疼痛、白细胞减少、恶心呕吐、潮热盗汗、失眠是CRF发生的危险因素（P＜0.05），病程是其保护因素（P＜0.05）。CRF认知调查显示，乳腺癌患者对CRF认知度低，医护人员对其宣教度低。结论乳腺癌患者发生CRF较为普遍，以轻、中度疲乏为主；乳腺癌肿瘤分期、疼痛、白细胞减少、恶心呕吐、潮热盗汗、失眠是影响患者CRF的危险因素；乳腺癌患者对CRF认知度低。