目的 采用生物信息学分析肿瘤组织潜在侯选靶标及标志物ADAM17的结构和功能特点。方法 运用ProtParam和ProtScale、STRING12.0、The Human Protein Atlas和cBioPortal等不同数据库,对人ADAM17理化性质、跨膜区域、信号肽、核定位序列、...目的 采用生物信息学分析肿瘤组织潜在侯选靶标及标志物ADAM17的结构和功能特点。方法 运用ProtParam和ProtScale、STRING12.0、The Human Protein Atlas和cBioPortal等不同数据库,对人ADAM17理化性质、跨膜区域、信号肽、核定位序列、磷酸化和糖基化位点、亚细胞定位、二级/三级结构、蛋白互作网络、不同肿瘤组织中的表达以及遗传改变等进行分析。采用免疫组化对肺、结肠组织的肿瘤组织和正常样本ADAM17表达进行验证。结果 人ADAM17是由824个氨基酸构成的亲水性蛋白;分子式为C_(4066)H_(6356)N_(1124)O_(1277)S_(50),理论等电点为5.50,平均亲水性为-0.573;定位于细胞质,具有1个跨膜结构域、1个信号肽以及2个核定位序列;二级结构主要由不规则卷曲组成,存在89个磷酸化位点、5个N-糖基化位点和9个O-糖基化位点;广泛分布于正常组织中,并在膀胱尿路上皮癌、宫颈鳞状细胞癌、结肠癌(COAD)、肾透明细胞癌、肝脏肝细胞癌和肺鳞状细胞癌(LUSC)中高表达,能与金属蛋白酶抑制因子3、表皮生长因子等主要蛋白发生相互作用,参与肿瘤坏死因子、核因子-κB等信号通路。免疫组化验证结果显示,ADAM17在人肺、结肠正常组织中低表达,而在LUSC、COAD组织中高表达。结论 ADAM17可能是肿瘤的潜在候选靶标及标志物。展开更多
BACKGROUND Colorectal cancer(CRC)is one of the most frequently encountered malignant tumors in clinical settings.Proteins encoded by the testis-expressed gene 14(TEX14)are imperative for spermatogenesis,necessitating ...BACKGROUND Colorectal cancer(CRC)is one of the most frequently encountered malignant tumors in clinical settings.Proteins encoded by the testis-expressed gene 14(TEX14)are imperative for spermatogenesis,necessitating intercellular bridges between germ cells.Anomalous expression of TEX14 has also been associated with the proliferation and differentiation of certain tumor cells.Recombinant A disintegrin and metalloprotease 17(ADAM17)is known as a membrane-bound protease that regulates cellular activities and signal transduction by hydrolyzing various substrate proteins on the cell membrane.We hypothesize that TEX14 and ADAM17 may serve as potential biomarkers influencing the staging,invasion,and metastasis of CRC.AIM To probe the correlation between TEX17 and ADAM17 profiles in the CRC tissues of elderly patients and their association with CRC staging,invasion,and metastasis.METHODS We gathered data from 86 elderly patients diagnosed pathologically with CRC between April 2020 and December 2023.For each patient,one sample of cancer tissue and one sample of adjacent normal tissue were harvested.Real-time fluorescence quantitative PCR measured the mRNA profiles of TEX14 and ADAM17.Immunohistochemistry ascertained the positivity rates of TEX14 and ADAM17 expressions.Clinical pathological features of neoplasm staging,invasion,and metastasis were collected,and the association between TEX14 and ADAM17 expressions and clinical pathology was evaluated.RESULTS The mRNA and expression profiles of TEX14 and ADAM17 were significantly elevated in CRC tissues.The positivity rates of TEX14 and ADAM17 proteins in CRC tissues were 70.93%and 77.91%,respectively.There were no significant differences in age,sex,pathological type,and tumor diameter between TEX14 and ADAM17-positive and-negative patients.Patients with higher tumor differentiation degree,deeper infiltration and TNM stages ranging from III to IV exhibited higher positivity rates of TEX14 and ADAM17.Patients with lymph node metastasis and distant metastasis showed higher positivity rates of TEX14 and ADAM17 than those without.Positive expressions of TEX14 and ADAM17 were highly correlated with tumor staging,invasion,and metastasis.CONCLUSION TEX14 and ADAM17 profiles were significantly elevated in the CRC tissues of elderly patients,and their high expressions were associated with tumor staging,invasion,and metastasis.展开更多
目的：探讨解聚素-金属蛋白酶（ADAM17）和表皮生长因子受体（EGFR）在脑胶质瘤的表达及意义。方法：实验分为对照组（脑外伤手术减压的脑组织， n =5）、低度恶性胶质瘤组（Ⅰ~Ⅱ级， n =5）和高度恶性胶质瘤组（Ⅲ~Ⅳ级， n =5），采...目的：探讨解聚素-金属蛋白酶（ADAM17）和表皮生长因子受体（EGFR）在脑胶质瘤的表达及意义。方法：实验分为对照组（脑外伤手术减压的脑组织， n =5）、低度恶性胶质瘤组（Ⅰ~Ⅱ级， n =5）和高度恶性胶质瘤组（Ⅲ~Ⅳ级， n =5），采用免疫印迹法检测各组ADAM17和EGFR水平。结果：ADAM17和EGFR在对照组微弱表达或不表达，在低度恶性胶质瘤组中表达增高，两组间比较差异有统计学意义（ P 〈0.01）；在高度恶性胶质瘤组中表达进一步增多，与低度恶性胶质瘤组比较差异有统计学意义（ P 〈0.01）。结论：ADAM17和EGFR在人脑胶质瘤中表达增高，且与胶质瘤的恶性程度相关。展开更多
文摘目的 采用生物信息学分析肿瘤组织潜在侯选靶标及标志物ADAM17的结构和功能特点。方法 运用ProtParam和ProtScale、STRING12.0、The Human Protein Atlas和cBioPortal等不同数据库,对人ADAM17理化性质、跨膜区域、信号肽、核定位序列、磷酸化和糖基化位点、亚细胞定位、二级/三级结构、蛋白互作网络、不同肿瘤组织中的表达以及遗传改变等进行分析。采用免疫组化对肺、结肠组织的肿瘤组织和正常样本ADAM17表达进行验证。结果 人ADAM17是由824个氨基酸构成的亲水性蛋白;分子式为C_(4066)H_(6356)N_(1124)O_(1277)S_(50),理论等电点为5.50,平均亲水性为-0.573;定位于细胞质,具有1个跨膜结构域、1个信号肽以及2个核定位序列;二级结构主要由不规则卷曲组成,存在89个磷酸化位点、5个N-糖基化位点和9个O-糖基化位点;广泛分布于正常组织中,并在膀胱尿路上皮癌、宫颈鳞状细胞癌、结肠癌(COAD)、肾透明细胞癌、肝脏肝细胞癌和肺鳞状细胞癌(LUSC)中高表达,能与金属蛋白酶抑制因子3、表皮生长因子等主要蛋白发生相互作用,参与肿瘤坏死因子、核因子-κB等信号通路。免疫组化验证结果显示,ADAM17在人肺、结肠正常组织中低表达,而在LUSC、COAD组织中高表达。结论 ADAM17可能是肿瘤的潜在候选靶标及标志物。
基金the Ethics Committee of The Affiliated People's Hospital of Ningbo University(Approval No.2020-NB-021032).
文摘BACKGROUND Colorectal cancer(CRC)is one of the most frequently encountered malignant tumors in clinical settings.Proteins encoded by the testis-expressed gene 14(TEX14)are imperative for spermatogenesis,necessitating intercellular bridges between germ cells.Anomalous expression of TEX14 has also been associated with the proliferation and differentiation of certain tumor cells.Recombinant A disintegrin and metalloprotease 17(ADAM17)is known as a membrane-bound protease that regulates cellular activities and signal transduction by hydrolyzing various substrate proteins on the cell membrane.We hypothesize that TEX14 and ADAM17 may serve as potential biomarkers influencing the staging,invasion,and metastasis of CRC.AIM To probe the correlation between TEX17 and ADAM17 profiles in the CRC tissues of elderly patients and their association with CRC staging,invasion,and metastasis.METHODS We gathered data from 86 elderly patients diagnosed pathologically with CRC between April 2020 and December 2023.For each patient,one sample of cancer tissue and one sample of adjacent normal tissue were harvested.Real-time fluorescence quantitative PCR measured the mRNA profiles of TEX14 and ADAM17.Immunohistochemistry ascertained the positivity rates of TEX14 and ADAM17 expressions.Clinical pathological features of neoplasm staging,invasion,and metastasis were collected,and the association between TEX14 and ADAM17 expressions and clinical pathology was evaluated.RESULTS The mRNA and expression profiles of TEX14 and ADAM17 were significantly elevated in CRC tissues.The positivity rates of TEX14 and ADAM17 proteins in CRC tissues were 70.93%and 77.91%,respectively.There were no significant differences in age,sex,pathological type,and tumor diameter between TEX14 and ADAM17-positive and-negative patients.Patients with higher tumor differentiation degree,deeper infiltration and TNM stages ranging from III to IV exhibited higher positivity rates of TEX14 and ADAM17.Patients with lymph node metastasis and distant metastasis showed higher positivity rates of TEX14 and ADAM17 than those without.Positive expressions of TEX14 and ADAM17 were highly correlated with tumor staging,invasion,and metastasis.CONCLUSION TEX14 and ADAM17 profiles were significantly elevated in the CRC tissues of elderly patients,and their high expressions were associated with tumor staging,invasion,and metastasis.
文摘目的：探讨解聚素-金属蛋白酶（ADAM17）和表皮生长因子受体（EGFR）在脑胶质瘤的表达及意义。方法：实验分为对照组（脑外伤手术减压的脑组织， n =5）、低度恶性胶质瘤组（Ⅰ~Ⅱ级， n =5）和高度恶性胶质瘤组（Ⅲ~Ⅳ级， n =5），采用免疫印迹法检测各组ADAM17和EGFR水平。结果：ADAM17和EGFR在对照组微弱表达或不表达，在低度恶性胶质瘤组中表达增高，两组间比较差异有统计学意义（ P 〈0.01）；在高度恶性胶质瘤组中表达进一步增多，与低度恶性胶质瘤组比较差异有统计学意义（ P 〈0.01）。结论：ADAM17和EGFR在人脑胶质瘤中表达增高，且与胶质瘤的恶性程度相关。
