Background:Sweat glands(SGs)have low regenerative potential after severe burns or trauma and their regeneration or functional recovery still faces many obstacles.In practice,restoring SG function requires not only the...Background:Sweat glands(SGs)have low regenerative potential after severe burns or trauma and their regeneration or functional recovery still faces many obstacles.In practice,restoring SG function requires not only the structural integrity of the gland itself,but also its neighboring tissues,especially blood vessels.Collagen triple helix repeat containing-1(CTHRC1)was first identified in vascular repair,and increasing reports showed a close correlation between cutaneous appendage specification,patterning and regeneration.The purpose of the present study was to clarify the role of CTHRC1 in SGs and their adjacent microvessels and find therapeutic strategies to restore SG function.Methods:The SGs and their adjacent microvascular network of Cthrc^(1−/−)mice were first inves-tigated using sweat test,laser Doppler imaging,tissue clearing technique and transcriptome analysis.The effects of CTHRC1 on dermal microvascular endothelial cells(DMECs)were further explored with cell proliferation,DiI-labeled acetylated low-density lipoprotein uptake,tube for-mation and intercellular junction establishment assays.The effects of CTHRC1 on SG function restoration were finally confirmed by replenishing the protein into the paws of Cthrc(1−/−)mice.Results:CTHRC1 is a key regulator of SG function in mice.At the tissue level,Cthrc1 deletion resulted in the disorder and reduction of the microvascular network around SGs.At the molecular level,the knockout of Cthrc1 reduced the expression of vascular development genes and functional proteins in the dermal tissues.Furthermore,CTHRC1 administration considerably enhanced SG function by inducing adjacent vascular network reconstruction.Conclusions:CTHRC1 promotes the development,morphogenesis and function execution of SGs and their neighboring vasculature.Our study provides a novel target for the restoration or regeneration of SG function in vivo.展开更多
目的:探讨流感病毒对胶原三股螺旋重复蛋白1(CTHRC1)表达的影响。方法:将流感病毒H3N2感染A549细胞,采用反转录PCR(RT-PCR)和Western印迹法检测细胞内CTHRC1 m RNA和蛋白表达的变化,酶联免疫吸附试验(ELISA)检测细胞上清和流感患者血清...目的:探讨流感病毒对胶原三股螺旋重复蛋白1(CTHRC1)表达的影响。方法:将流感病毒H3N2感染A549细胞,采用反转录PCR(RT-PCR)和Western印迹法检测细胞内CTHRC1 m RNA和蛋白表达的变化,酶联免疫吸附试验(ELISA)检测细胞上清和流感患者血清中CTHRC1的水平,统计学分析其差异。结果:与对照细胞相比,感染H3N2的A549细胞m RNA和蛋白表达水平升高,且流感患者血清中CTHRC1的含量显著高于健康对照(P<0.05)。结论:流感病毒能够促进CTHRC1的合成和分泌。展开更多
基金supported by grants from the National Natural Science Foundation of China(81830064,81721092,32000969,82002056)Key Support Program for Growth Factor Research(SZYZ-TR-03)+3 种基金Chinese PLA General Hospital for Military Medical Innovation Research Project(CX-19026)the CAMS Innovation Fund for Medical Sciences(CIFMS,2019-I2M-5-059)the Military Medical Research and Development Projects(AWS17J005)Beijing Natural Science Foundation(7204306).
文摘Background:Sweat glands(SGs)have low regenerative potential after severe burns or trauma and their regeneration or functional recovery still faces many obstacles.In practice,restoring SG function requires not only the structural integrity of the gland itself,but also its neighboring tissues,especially blood vessels.Collagen triple helix repeat containing-1(CTHRC1)was first identified in vascular repair,and increasing reports showed a close correlation between cutaneous appendage specification,patterning and regeneration.The purpose of the present study was to clarify the role of CTHRC1 in SGs and their adjacent microvessels and find therapeutic strategies to restore SG function.Methods:The SGs and their adjacent microvascular network of Cthrc^(1−/−)mice were first inves-tigated using sweat test,laser Doppler imaging,tissue clearing technique and transcriptome analysis.The effects of CTHRC1 on dermal microvascular endothelial cells(DMECs)were further explored with cell proliferation,DiI-labeled acetylated low-density lipoprotein uptake,tube for-mation and intercellular junction establishment assays.The effects of CTHRC1 on SG function restoration were finally confirmed by replenishing the protein into the paws of Cthrc(1−/−)mice.Results:CTHRC1 is a key regulator of SG function in mice.At the tissue level,Cthrc1 deletion resulted in the disorder and reduction of the microvascular network around SGs.At the molecular level,the knockout of Cthrc1 reduced the expression of vascular development genes and functional proteins in the dermal tissues.Furthermore,CTHRC1 administration considerably enhanced SG function by inducing adjacent vascular network reconstruction.Conclusions:CTHRC1 promotes the development,morphogenesis and function execution of SGs and their neighboring vasculature.Our study provides a novel target for the restoration or regeneration of SG function in vivo.
文摘目的:探讨流感病毒对胶原三股螺旋重复蛋白1(CTHRC1)表达的影响。方法:将流感病毒H3N2感染A549细胞,采用反转录PCR(RT-PCR)和Western印迹法检测细胞内CTHRC1 m RNA和蛋白表达的变化,酶联免疫吸附试验(ELISA)检测细胞上清和流感患者血清中CTHRC1的水平,统计学分析其差异。结果:与对照细胞相比,感染H3N2的A549细胞m RNA和蛋白表达水平升高,且流感患者血清中CTHRC1的含量显著高于健康对照(P<0.05)。结论:流感病毒能够促进CTHRC1的合成和分泌。
