PDGF—BB对UVB诱导的光老化成纤维细胞中ROS的影响(3)
PDGF-BB是PDGF家族中活性最强的亚型,可与所有的受体分子(α-受体,β-受体)相结合,与跨膜酪氨酸激酶受体结合后可诱导许多其他细胞内蛋白的酪氨酸磷酸化,介导成纤维细胞趋化、增殖和诱导细胞外基质和基质金属蛋白酶,参与创伤修复、肌腱重塑、溃疡愈合等[16]。PDGF-BB可诱导特异性的生物反应,包括细胞增殖、迁移、基质合成、血管生成和生长因子的释放。其在皮肤愈合,慢性溃疡,肌腱修复,骨折及创伤中的研究和应用逐渐加深和普及。近年来,有研究表明,PDGF-BB具有线粒体保护作用。ROS产生与清除失衡后,线粒体膜电位下降,线粒体DNA突变,电子链传递和正常氧化磷酸化受到干扰,ATP生成减少,细胞走向衰老和凋亡。有研究证实PDGF-BB可通过激活磷脂酰肌醇3激酶/蛋白激酶B (Phosphatidylinositol 3 kinase /protein kinase B,PI3K/AKt)信号保护线粒体超微结构,缓解氧化应激。另外PDGF-BB可诱导抗氧化物酶如过氧化氢酶(Catalase,CAT),超氧化物歧化酶(Superoxide dismutase2,SOD2),谷胱甘肽过氧化物酶(Glutathione peroxidase 1,GPX1)的产生,有助于清除ROS,恢复细胞氧化/还原平衡[6]。本研究探讨PDGF-BB可否减少UVB诱导的FBs内ROS过表达。实验结果表明,1ng/ml PDGF-BB可有效减少ROS含量,提示其对UVB导致的氧化应激有的一定的拮抗作用。
, 百拇医药
综上所述,本实验证实了PDGF-BB可减少衰老染色阳性细胞,降低光老化成纤维细胞中ROS过表达,减轻UVB诱导的氧化应激从而缓解UVB对成纤维细胞的损伤。提示PDGF-BB可在一定程度上减缓光老化进程。然而,其对ROS表达抑制的具体机制及对成纤维细胞其他方面的影响,包括细胞周期、胞外基质平衡等需进一步研究。
[参考文献]
[1]俞卓伟,保志军,阮清伟,等.维持抗氧化、抗炎功能稳定与自身稳态和保健延寿[J].老年医学与保健,2015,21(1):1-4.
[2]李春雨,张丽宏,张宁,等.紫外线诱导皮肤光老化的形成机制[J].中国美容医学,2009,18(3):416-419.
[3]Pandel R,Poljsak B,Godic A,et al.Skin photoaging and the role of antioxidants in its prevention[J].ISRN Dermatol,2013,2013:930164.
, 百拇医药
[4]Zouboulis CC,Makrantonaki E.Clinical aspects and molecular diagnostics of skin aging[J].Clin Dermatol,2011,29(1):3-14.
[5]Fredriksson L,Li H,Eriksson U.The PDGF family: four gene products form five dimeric isoforms[J].Cytokine Growth Factor Rev,2004,15(4):197-204.
[6]Cabezas R,Vega-Vela NE,González-Sanmiguel J,et al.PDGF-BB Preserves Mitochondrial Morphology, Attenuates ROS Production, and Upregulates Neuroglobin in an Astrocytic Model Under Rotenone Insult[J].Mol Neurobiol,2018,55(4):3085-3095.
, http://www.100md.com
[7]Zeng JP,Bi B,Chen L,et al.Repeated exposure of mouse dermal fibroblasts at a sub-cytotoxic dose of UVB leads to premature senescence: A robust model of cellular photoaging[J].J Dermatol Sci,2014,73(1):49-56.
[8]陈亮,毕波,曾继平,等.pH对衰老相关β-半乳糖苷酶染色的影响[J].中国美容整形外科杂志,2014,25(12):751-754.
[9]Li L,Tan J,Miao Y,et al.ROS and Autophagy: Interactions and Molecular Regulatory Mechanisms[J].Cell Mol Neurobiol,2015,35(5):615-621.
, 百拇医药
[10]崔劍,李兆陇,洪啸吟.自由基生物抗氧化与疾病[J].清华大学学报(自然科学版),2000,40(6):9-12.
[11]Pryor WA,Houk KN,Foote CS,et al.Free radical biology and medicine: it's a gas, man![J]. Am J Physiol Regul Integr Comp Physiol,2006,291(3):R491-511.
[12]Balaban RS,Nemoto S,Finkel T.Mitochondria, Oxidants, and Aging[J]. Cell,2005,120(4):483-495.
[13]Suzuki N,Mittler R.Reactive oxygen species-dependent wound responses in animals and plants[J].Free Radic Biol Med,2012,53(12):2269-2276.
, http://www.100md.com
[14]Baxter PS,Hardingham GE.Adaptive regulation of the brain’s antioxidant defences by neurons and astrocytes[J].Free Radic Biol Med,2016,100:147-152.
[15]Tobin DJ.Introduction to skin aging[J].J Tissue Viability,2017,26(1):37-46.
[16]Digiovanni CW,Lin S,Pinzur M.Recombinant human PDGF-BB in foot and ankle fusion[J].Expert Rev Med Devices,2012,9(2):111-122.
[收稿日期]2018-03-12 [修回日期]2018-04-17
编辑/朱婉蓉, http://www.100md.com(任润健 方磊 贾传龙 赵虎 陈亮 秦登科 周慧敏 毕波)
, 百拇医药
综上所述,本实验证实了PDGF-BB可减少衰老染色阳性细胞,降低光老化成纤维细胞中ROS过表达,减轻UVB诱导的氧化应激从而缓解UVB对成纤维细胞的损伤。提示PDGF-BB可在一定程度上减缓光老化进程。然而,其对ROS表达抑制的具体机制及对成纤维细胞其他方面的影响,包括细胞周期、胞外基质平衡等需进一步研究。
[参考文献]
[1]俞卓伟,保志军,阮清伟,等.维持抗氧化、抗炎功能稳定与自身稳态和保健延寿[J].老年医学与保健,2015,21(1):1-4.
[2]李春雨,张丽宏,张宁,等.紫外线诱导皮肤光老化的形成机制[J].中国美容医学,2009,18(3):416-419.
[3]Pandel R,Poljsak B,Godic A,et al.Skin photoaging and the role of antioxidants in its prevention[J].ISRN Dermatol,2013,2013:930164.
, 百拇医药
[4]Zouboulis CC,Makrantonaki E.Clinical aspects and molecular diagnostics of skin aging[J].Clin Dermatol,2011,29(1):3-14.
[5]Fredriksson L,Li H,Eriksson U.The PDGF family: four gene products form five dimeric isoforms[J].Cytokine Growth Factor Rev,2004,15(4):197-204.
[6]Cabezas R,Vega-Vela NE,González-Sanmiguel J,et al.PDGF-BB Preserves Mitochondrial Morphology, Attenuates ROS Production, and Upregulates Neuroglobin in an Astrocytic Model Under Rotenone Insult[J].Mol Neurobiol,2018,55(4):3085-3095.
, http://www.100md.com
[7]Zeng JP,Bi B,Chen L,et al.Repeated exposure of mouse dermal fibroblasts at a sub-cytotoxic dose of UVB leads to premature senescence: A robust model of cellular photoaging[J].J Dermatol Sci,2014,73(1):49-56.
[8]陈亮,毕波,曾继平,等.pH对衰老相关β-半乳糖苷酶染色的影响[J].中国美容整形外科杂志,2014,25(12):751-754.
[9]Li L,Tan J,Miao Y,et al.ROS and Autophagy: Interactions and Molecular Regulatory Mechanisms[J].Cell Mol Neurobiol,2015,35(5):615-621.
, 百拇医药
[10]崔劍,李兆陇,洪啸吟.自由基生物抗氧化与疾病[J].清华大学学报(自然科学版),2000,40(6):9-12.
[11]Pryor WA,Houk KN,Foote CS,et al.Free radical biology and medicine: it's a gas, man![J]. Am J Physiol Regul Integr Comp Physiol,2006,291(3):R491-511.
[12]Balaban RS,Nemoto S,Finkel T.Mitochondria, Oxidants, and Aging[J]. Cell,2005,120(4):483-495.
[13]Suzuki N,Mittler R.Reactive oxygen species-dependent wound responses in animals and plants[J].Free Radic Biol Med,2012,53(12):2269-2276.
, http://www.100md.com
[14]Baxter PS,Hardingham GE.Adaptive regulation of the brain’s antioxidant defences by neurons and astrocytes[J].Free Radic Biol Med,2016,100:147-152.
[15]Tobin DJ.Introduction to skin aging[J].J Tissue Viability,2017,26(1):37-46.
[16]Digiovanni CW,Lin S,Pinzur M.Recombinant human PDGF-BB in foot and ankle fusion[J].Expert Rev Med Devices,2012,9(2):111-122.
[收稿日期]2018-03-12 [修回日期]2018-04-17
编辑/朱婉蓉, http://www.100md.com(任润健 方磊 贾传龙 赵虎 陈亮 秦登科 周慧敏 毕波)