Intestinal epithelial stem cells (IESCs) are one of the most rapidly self‐renewing and proliferating adult stem cells. The IESCs reside at the bottom of intestinal and colonic crypts, giving rise to all intestinal ep...Intestinal epithelial stem cells (IESCs) are one of the most rapidly self‐renewing and proliferating adult stem cells. The IESCs reside at the bottom of intestinal and colonic crypts, giving rise to all intestinal epithelial lineages and maintaining intestinal epithelial replenishment. The technique of three‐dimensional culture based upon intestinal stem cell biology has been recently developed to study gastrointestinal development and disease pathogenesis. Here, we summarize the techniques used to isolate Lgr5‐ positive IESCs to form the enteroids from intestine or colonoids from colon, and present the means to examine these organoid functions. This study will provide a simple and practical way for producing intestinal tissues in the laboratory.展开更多
目的探讨含亮氨酸重复序列G-蛋白偶联受体5(1eucine-rich repeat-containing G protein coupled receptor 5,Lgr5)及CD44在卵巢癌中的表达及其与预后的关系。方法选取2006年5月至2010年1月住院并接受手术治疗的卵巢癌患者140例,选取同...目的探讨含亮氨酸重复序列G-蛋白偶联受体5(1eucine-rich repeat-containing G protein coupled receptor 5,Lgr5)及CD44在卵巢癌中的表达及其与预后的关系。方法选取2006年5月至2010年1月住院并接受手术治疗的卵巢癌患者140例,选取同期本院因卵巢良性病变行肿物剥除或附件切除的40例患者作为对照,应用免疫组化(S-P)方法检测140例卵巢癌组织(卵巢癌组)、140例卵巢癌癌旁组织(癌旁组)、正常卵巢组织40例(正常组)中的Lgr5及CD44蛋白表达,分析其与卵巢癌患者临床病理指标的关系。结果 (1)Lgr5在正常卵巢组织、癌旁组织和卵巢癌中的阳性率分别为5.0%、18.3%和95.7%,差异具有统计学意义(F=24.581,P=0.001);CD44在正常卵巢组织、癌旁组织和卵巢癌中的阳性率分别为7.5%、15.7%和90.0%,差异具有统计学意义(P<0.05)。(2)Lgr5表达与肿瘤分化程度、淋巴结转移及TNM分期有关(P<0.05)。CD44表达与肿瘤分化程度、浸润深度、淋巴结转移及TNM分期有关(P<0.05)。(3)Lgr5及CD44存在正相关性(r=0.3,P<0.05)。(4)Lgr5高表达者(+++)和低表达者(+)^(++)5年总生存率分别为29.2%和51.2%(HR=11.637,95%CI:4.351~18.439;P=0.002);CD44高表达者(+++)和低表达者(+)^(++)5年总生存率分别为35.3%和41.3%(HR=10.142,95%CI:4.285~17.013;P=0.006)。结论 Lgr5及CD44的增强表达与卵巢癌侵袭性增强有密切关系,其表达可作为判断卵巢癌患者预后的指标。展开更多
基金The Non-profit Central Institute Fund of Chinese Academy of Medical Sciences,Grant/Award Number:2016RC310011The National Key Research and Development Program of China,Grant/Award Number:2017YFA0105200Peking Medical College(PUMC)Scholar-Endowed Professorship
文摘Intestinal epithelial stem cells (IESCs) are one of the most rapidly self‐renewing and proliferating adult stem cells. The IESCs reside at the bottom of intestinal and colonic crypts, giving rise to all intestinal epithelial lineages and maintaining intestinal epithelial replenishment. The technique of three‐dimensional culture based upon intestinal stem cell biology has been recently developed to study gastrointestinal development and disease pathogenesis. Here, we summarize the techniques used to isolate Lgr5‐ positive IESCs to form the enteroids from intestine or colonoids from colon, and present the means to examine these organoid functions. This study will provide a simple and practical way for producing intestinal tissues in the laboratory.
文摘目的探讨含亮氨酸重复序列G-蛋白偶联受体5(1eucine-rich repeat-containing G protein coupled receptor 5,Lgr5)及CD44在卵巢癌中的表达及其与预后的关系。方法选取2006年5月至2010年1月住院并接受手术治疗的卵巢癌患者140例,选取同期本院因卵巢良性病变行肿物剥除或附件切除的40例患者作为对照,应用免疫组化(S-P)方法检测140例卵巢癌组织(卵巢癌组)、140例卵巢癌癌旁组织(癌旁组)、正常卵巢组织40例(正常组)中的Lgr5及CD44蛋白表达,分析其与卵巢癌患者临床病理指标的关系。结果 (1)Lgr5在正常卵巢组织、癌旁组织和卵巢癌中的阳性率分别为5.0%、18.3%和95.7%,差异具有统计学意义(F=24.581,P=0.001);CD44在正常卵巢组织、癌旁组织和卵巢癌中的阳性率分别为7.5%、15.7%和90.0%,差异具有统计学意义(P<0.05)。(2)Lgr5表达与肿瘤分化程度、淋巴结转移及TNM分期有关(P<0.05)。CD44表达与肿瘤分化程度、浸润深度、淋巴结转移及TNM分期有关(P<0.05)。(3)Lgr5及CD44存在正相关性(r=0.3,P<0.05)。(4)Lgr5高表达者(+++)和低表达者(+)^(++)5年总生存率分别为29.2%和51.2%(HR=11.637,95%CI:4.351~18.439;P=0.002);CD44高表达者(+++)和低表达者(+)^(++)5年总生存率分别为35.3%和41.3%(HR=10.142,95%CI:4.285~17.013;P=0.006)。结论 Lgr5及CD44的增强表达与卵巢癌侵袭性增强有密切关系,其表达可作为判断卵巢癌患者预后的指标。
