Cutaneous squamous cell carcinoma(cSCC),a type of non-melanoma skin cancer(NMSC),is the most common malignancy worldwide.Thioredoxin(TXN)domain-containing protein 9(TXNDC9)is a member of the TXN family that is importa...Cutaneous squamous cell carcinoma(cSCC),a type of non-melanoma skin cancer(NMSC),is the most common malignancy worldwide.Thioredoxin(TXN)domain-containing protein 9(TXNDC9)is a member of the TXN family that is important in cell differentiation.However,the biological function of this protein in cancer,particularly cSCC,is still unknown.In the present study,our experiments revealed the protective effects of TXNDC9 on UV-B-irritated cSCC cells.The initial findings showed that TXNDC9 is significantly upregulated in cSCC tissue and cells compared to normal skin tissue and keratinocytes.UV-B radiation robustly induces the expression of TXNDC9,and UV-B-induced cSCC cell death is boosted by TXNDC9 deficiency.Moreover,cSCC cells lacking TXNDC9 displayed attenuated activation of the NF-κB pathway.Additional studies by inhibiting TXNDC9 confirmed this finding,as TXNDC9 deficiency attenuated UV-B radiation-induced translocation of NF-κB p65 from the cytoplasm to the nucleus of cSCC.In conclusion,our work demonstrates the biological roles of TXNDC9 in cSCC progression and may provide a novel therapeutic target to treat cSCC in the future.展开更多
目的探讨骨肉瘤组织中MHCⅠ类链相关蛋白A(MHC class Ⅰ chain-related A,MICA)、MMP-9和NF-κB的表达及相互间的关系,为研究骨肉瘤组织中MICA蛋白表达和脱落机制提供组织学依据。方法应用免疫组织化学方法检测66例骨肉瘤、11例骨母细胞...目的探讨骨肉瘤组织中MHCⅠ类链相关蛋白A(MHC class Ⅰ chain-related A,MICA)、MMP-9和NF-κB的表达及相互间的关系,为研究骨肉瘤组织中MICA蛋白表达和脱落机制提供组织学依据。方法应用免疫组织化学方法检测66例骨肉瘤、11例骨母细胞瘤,8例骨化性纤维瘤和6例正常骨组织中MICA蛋白的表达情况,并检测66例骨肉瘤组织中MMP-9和NF-κB蛋白的表达情况。结果(1)MICA蛋白在骨肉瘤组织、骨母细胞瘤、骨化性纤维瘤和正常骨组织的表达率分别为51.6%(34/66)、9%(1/11)、0(0/8)、0(0/6),骨肉瘤组织中MICA表达与骨母细胞瘤(P=0.01)、骨化性纤维瘤(P<0.01)和正常骨组织(P<0.05的差异有显著性。(2)骨肉瘤组织中MMP-9和NF-κB表达率分别为55%(36/66)和73%(48/66);NF-κB与MICA(r=0.373,P<0.01)和MMP-9(r=0.536,P<0.01)的表达呈正相关关系。结论MICA蛋白可作为骨肉瘤诊断的分子标志物;NF-κB可能参与MICA蛋白表达和脱落的分子机制,NF-κB可作为骨肉瘤免疫治疗的候选靶点。展开更多
目的:观察慢病毒介导的NIBP(NIK and IKKβbinding protein)基因转染结肠癌细胞株HT29后,细胞迁移能力以及细胞内p65、MMP2、MMP9 m RNA和蛋白表达的变化。方法:分为未经转染的HT29细胞(HT29组)、转染空载的HT29细胞(HT29-NC组)和转染N...目的:观察慢病毒介导的NIBP(NIK and IKKβbinding protein)基因转染结肠癌细胞株HT29后,细胞迁移能力以及细胞内p65、MMP2、MMP9 m RNA和蛋白表达的变化。方法:分为未经转染的HT29细胞(HT29组)、转染空载的HT29细胞(HT29-NC组)和转染NIBP的HT29细胞(HT29-NIBP稳转组)。采用Transwell试验检测细胞迁移能力;Q-PCR法检测NIBP、p65、MMP2、MMP9的m RNA表达;Western Blot法检测NIBP、p65、磷酸化p65(p-p65)的蛋白表达;ELISA法检测MMP2、MMP9的分泌。结果:高表达NIBP能增强结肠癌细胞株HT29的迁移能力,并主要通过增加p-p65从而促进MMP2、MMP9 m RNA及蛋白表达(P<0.05)。结论:NIBP可能通过激活NF-κB信号通路促进结肠癌细胞分泌MMP-2、MMP-9,从而促进结肠癌细胞的侵袭转移。展开更多
基金supported by grants from the National Natural Science Fund Youth Fund of China(No.81901164)the Natural Science Foundation of Fujian Province(No.2020J02053)+2 种基金the Natural Science Foundation of Fujian Province(No.2020J01966)the Talent Introduction Project of the First Affiliated Hospital of Fujian Medical University(No.YJRC3813)the Startup Fund for Scientific Research,Fujian Medical University(2020QH2029).
文摘Cutaneous squamous cell carcinoma(cSCC),a type of non-melanoma skin cancer(NMSC),is the most common malignancy worldwide.Thioredoxin(TXN)domain-containing protein 9(TXNDC9)is a member of the TXN family that is important in cell differentiation.However,the biological function of this protein in cancer,particularly cSCC,is still unknown.In the present study,our experiments revealed the protective effects of TXNDC9 on UV-B-irritated cSCC cells.The initial findings showed that TXNDC9 is significantly upregulated in cSCC tissue and cells compared to normal skin tissue and keratinocytes.UV-B radiation robustly induces the expression of TXNDC9,and UV-B-induced cSCC cell death is boosted by TXNDC9 deficiency.Moreover,cSCC cells lacking TXNDC9 displayed attenuated activation of the NF-κB pathway.Additional studies by inhibiting TXNDC9 confirmed this finding,as TXNDC9 deficiency attenuated UV-B radiation-induced translocation of NF-κB p65 from the cytoplasm to the nucleus of cSCC.In conclusion,our work demonstrates the biological roles of TXNDC9 in cSCC progression and may provide a novel therapeutic target to treat cSCC in the future.
文摘目的探讨骨肉瘤组织中MHCⅠ类链相关蛋白A(MHC class Ⅰ chain-related A,MICA)、MMP-9和NF-κB的表达及相互间的关系,为研究骨肉瘤组织中MICA蛋白表达和脱落机制提供组织学依据。方法应用免疫组织化学方法检测66例骨肉瘤、11例骨母细胞瘤,8例骨化性纤维瘤和6例正常骨组织中MICA蛋白的表达情况,并检测66例骨肉瘤组织中MMP-9和NF-κB蛋白的表达情况。结果(1)MICA蛋白在骨肉瘤组织、骨母细胞瘤、骨化性纤维瘤和正常骨组织的表达率分别为51.6%(34/66)、9%(1/11)、0(0/8)、0(0/6),骨肉瘤组织中MICA表达与骨母细胞瘤(P=0.01)、骨化性纤维瘤(P<0.01)和正常骨组织(P<0.05的差异有显著性。(2)骨肉瘤组织中MMP-9和NF-κB表达率分别为55%(36/66)和73%(48/66);NF-κB与MICA(r=0.373,P<0.01)和MMP-9(r=0.536,P<0.01)的表达呈正相关关系。结论MICA蛋白可作为骨肉瘤诊断的分子标志物;NF-κB可能参与MICA蛋白表达和脱落的分子机制,NF-κB可作为骨肉瘤免疫治疗的候选靶点。
文摘目的:观察慢病毒介导的NIBP(NIK and IKKβbinding protein)基因转染结肠癌细胞株HT29后,细胞迁移能力以及细胞内p65、MMP2、MMP9 m RNA和蛋白表达的变化。方法:分为未经转染的HT29细胞(HT29组)、转染空载的HT29细胞(HT29-NC组)和转染NIBP的HT29细胞(HT29-NIBP稳转组)。采用Transwell试验检测细胞迁移能力;Q-PCR法检测NIBP、p65、MMP2、MMP9的m RNA表达;Western Blot法检测NIBP、p65、磷酸化p65(p-p65)的蛋白表达;ELISA法检测MMP2、MMP9的分泌。结果:高表达NIBP能增强结肠癌细胞株HT29的迁移能力,并主要通过增加p-p65从而促进MMP2、MMP9 m RNA及蛋白表达(P<0.05)。结论:NIBP可能通过激活NF-κB信号通路促进结肠癌细胞分泌MMP-2、MMP-9,从而促进结肠癌细胞的侵袭转移。