The National Comprehensive Cancer Network (NCCN) has updated and released the NCCN esophageal and esophagogastric junction cancers clinical practice guidelines in oncology (version 3. 2022). Compared with the version 4 of the guidelines in 2021, the 3 versions in 2022 have some updates and revisions, mainly focusing on molecular marker detection, perioperative treatment, advanced immunotherapy, radiotherapy and other aspects. This article will interpret the main content of the new edition of the guidelines, in order to enhance the understanding of the guidelines and guide the clinical practice of diagnosis and treatment.
Objective To study the effect of substance P ( SP) on int racellular f ree calcium concent ration in human poorly-differentiated gast ric cancer cell in vitro. Methods Human gast ric cancer cell line MKN45 was cultured in RPMI 1640. Then the cells were loaded with specific calcium fluorescent probe Furu23/ AM. ASN21377642 (NK21 receptor antagonist) , Nicardipine (calcium channel blocker) and different concent rations of SP were used to treat gast ric cancer cells. The concent ration changes of int racellular free calcium were detected by laser scanning confocal microscope. Results It was found that 10 , 50 and 100 nmol/ L SP could significantly increase the int racellular free calcium concent ration of gast ric cancer cells in Hanks solutions , which contain ext racellular calcium ( P lt;0. 05) , and the change was in a dose-dependent manner ( P lt; 0. 05) . When there was ext racellular calcium existed ,the increasing amplitude of intracellular f ree calcium concent ration was significantly higher than that when there was no extracellular calcium ( Plt; 0. 05) . And when Hanks solutions were pretreated with ASN21377642 and Nicardipine , the effects of 100 nmol/ L SP were partly inhibited , and the concent rations of int racellular f ree calcium were significantly lower than those in group s without pret reatment s ( P lt; 0. 05) . Conclusion SP can significantly increase free calcium concent ration in the gastric cancer cells. Releasing of stored calcium in the cells and influx of extracelluar calcium may contribute to the elevation of int racellular free calcium concentration.
目的 探讨经转化生长因子-β1 ( TGF-β1) 基因修饰的未成熟树突状细胞(imDC) 预处理大鼠小肠移植受体后的外周血及移植肠浸润T 细胞的变化及意义。方法 选用近交系F344/ N 和BN 大鼠建立全小肠异位移植模型,实验分4 组(每组24 只) : 同基因移植组(BN-BN 组) 、异基因移植组( F344/ N-BN 组) 、异基因移植+ TGF-β1 基因转染imDC 组( F344/ N-BN + TGF2β1 组) 和异基因移植+ TGF-β1 基因转染imDC + FK506 组( F344/ N-BN + TGF-β1 + FK506 组) 。各组大鼠分别于术后3 、5 、7 d 各处死6 只,获取大鼠静脉血和移植肠。应用免疫组化SABC 法检测受体鼠外周血及移植肠CD4 + 、CD8 + 、CD25 + 细胞和IL-4 的表达。同时行移植肠组织病理学检查并观察大鼠生存情况。结果 TGF-β1 修饰的DC 细胞能显著抑制外周血及移植肠浸润淋巴细胞CD4 + 、CD8 + 及CD25 + 的表达,并提高IL-4 的表达; 显著延长受体大鼠的生存时间,但移植肠仍有排斥反应的病理组织学征象。结论 TGF-β1 修饰的DC 通过影响受体外周血及移植肠浸润T 细胞对大鼠小肠移植发挥免疫抑制作用。