溴结构域蛋白4特异性抑制剂JQ-1对人增生性瘢痕的影响

目的 · 探究溴结构域蛋白 4(BRD4)特异性抑制剂 JQ-1 对人增生性瘢痕的影响及其可能机制。方法 · 收集人皮肤增生性瘢 痕标本,原代培养皮肤瘢痕成纤维细胞,并进行传代培养,予以0.1、0.5、1.0、2.0、2.5、12.5 μmol/L 不同浓度的JQ-1 干预48 h, CCK-8 试剂盒、细胞划痕试验和 ELISA 法分别检测 JQ-1 对成纤维细胞增殖、迁移、Ⅰ型胶原蛋白(COL Ⅰ)分泌量及 TGF-β1 的蛋 白水平。36 只裸鼠构建瘢痕动物模型,将临床上获得的瘢痕组织(1.0 cm×1.0 cm×0.5 cm)移植于裸鼠背部皮下。继续饲养 4 周后, 将裸鼠分成 2 组...

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Published in上海交通大学学报(医学版) Vol. 37; no. 7; pp. 924 - 929
Main Author 胡艳阁 郝健 张迪 杨川峰 宋晨璐 方勇
Format Journal Article
LanguageChinese
Published 上海交通大学医学院附属第九人民医院烧伤整形科,上海,201999 2017
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ISSN1674-8115
DOI10.3969/j.issn.1674-8115.2017.07.007

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Abstract 目的 · 探究溴结构域蛋白 4(BRD4)特异性抑制剂 JQ-1 对人增生性瘢痕的影响及其可能机制。方法 · 收集人皮肤增生性瘢 痕标本,原代培养皮肤瘢痕成纤维细胞,并进行传代培养,予以0.1、0.5、1.0、2.0、2.5、12.5 μmol/L 不同浓度的JQ-1 干预48 h, CCK-8 试剂盒、细胞划痕试验和 ELISA 法分别检测 JQ-1 对成纤维细胞增殖、迁移、Ⅰ型胶原蛋白(COL Ⅰ)分泌量及 TGF-β1 的蛋 白水平。36 只裸鼠构建瘢痕动物模型,将临床上获得的瘢痕组织(1.0 cm×1.0 cm×0.5 cm)移植于裸鼠背部皮下。继续饲养 4 周后, 将裸鼠分成 2 组,JQ-1 组和 DMSO 组,分别每日予以 0.5 μmol/L JQ-1 及 0.1% DMSO 的瘢痕内多点注射,1 mL/ 只。天狼猩红染色 和免疫组织化学法分别观察瘢痕中 COL Ⅰ / Ⅲ及 α 平滑肌肌动蛋白(α-SMA)的变化情况。结果 · 细胞实验表明:① 0.5 μmol/L 及 以上浓度 JQ-1 对成纤维细胞增殖有明显抑制作用(均P〈0.01)。② JQ-1 可抑制成纤维细胞的迁移活性(均P〈0.01)。③ JQ-1 可抑 制成纤维细胞 COL Ⅰ的分泌及 TGF-β1 的产生(均 P〈0.01)。动物实验表明:① JQ-1 组 COL Ⅰ / Ⅲ总含量较 DMSO 组显著下降,且 COL Ⅰ / Ⅲ比值下降(均 P〈0.05)。② JQ-1 组 α-SMA 的含量较对照组明显下降(均 P〈0.05)。 结论 · JQ-1 可抑制体外人瘢痕成纤维 细胞的增殖、迁移、COL Ⅰ的分泌及 TGF-β1 的产生;其对裸鼠体内的人瘢痕组织中 COL Ⅰ / Ⅲ的分泌及成纤维细胞向肌成纤维细胞 的转化亦有抑制作用。
AbstractList R619+.9; 目的·探究溴结构域蛋白4 (BRD4)特异性抑制剂JQ-1对人增生性瘢痕的影响及其可能机制.方法·收集人皮肤增生性瘢痕标本,原代培养皮肤瘢痕成纤维细胞,并进行传代培养,予以0.1、0.5、1.0、2.0、2.5、12.5 μmol/L不同浓度的JQ-1干预48 h,CCK-8试剂盒、细胞划痕试验和ELISA法分别检测JQ-1对成纤维细胞增殖、迁移、Ⅰ型胶原蛋白(COL Ⅰ)分泌量及TGF-β1的蛋白水平.36只裸鼠构建瘢痕动物模型,将临床上获得的瘢痕组织(1.0 cm×1.0 cm×0.5 cm)移植于裸鼠背部皮下.继续饲养4周后,将裸鼠分成2组,JQ-1组和DMSO组,分别每日予以0.5 μ mol/L JQ-1及0.1% DMSO的瘢痕内多点注射,1mL/只.天狼猩红染色和免疫组织化学法分别观察瘢痕中COL Ⅰ/Ⅲ及α平滑肌肌动蛋白(α-SMA)的变化情况.结果·细胞实验表明:①0.5 μmol/L及以上浓度JQ-1对成纤维细胞增殖有明显抑制作用(均P<0.01).②JQ-1可抑制成纤维细胞的迁移活性(均P<0.01).③JQ-1可抑制成纤维细胞COL Ⅰ的分泌及TGF-β1的产生(均P<0.01).动物实验表明:①JQ-1组COL Ⅰ/Ⅲ总含量较DMSO组显著下降,且COL Ⅰ/Ⅲ比值下降(均P<0.05).②JQ-1组α-SMA的含量较对照组明显下降(均P<0.05).结论·JQ-1可抑制体外人瘢痕成纤维细胞的增殖、迁移、COL Ⅰ的分泌及TGF-β1的产生;其对裸鼠体内的人瘢痕组织中COL Ⅰ/Ⅲ的分泌及成纤维细胞向肌成纤维细胞的转化亦有抑制作用.
目的 · 探究溴结构域蛋白 4(BRD4)特异性抑制剂 JQ-1 对人增生性瘢痕的影响及其可能机制。方法 · 收集人皮肤增生性瘢 痕标本,原代培养皮肤瘢痕成纤维细胞,并进行传代培养,予以0.1、0.5、1.0、2.0、2.5、12.5 μmol/L 不同浓度的JQ-1 干预48 h, CCK-8 试剂盒、细胞划痕试验和 ELISA 法分别检测 JQ-1 对成纤维细胞增殖、迁移、Ⅰ型胶原蛋白(COL Ⅰ)分泌量及 TGF-β1 的蛋 白水平。36 只裸鼠构建瘢痕动物模型,将临床上获得的瘢痕组织(1.0 cm×1.0 cm×0.5 cm)移植于裸鼠背部皮下。继续饲养 4 周后, 将裸鼠分成 2 组,JQ-1 组和 DMSO 组,分别每日予以 0.5 μmol/L JQ-1 及 0.1% DMSO 的瘢痕内多点注射,1 mL/ 只。天狼猩红染色 和免疫组织化学法分别观察瘢痕中 COL Ⅰ / Ⅲ及 α 平滑肌肌动蛋白(α-SMA)的变化情况。结果 · 细胞实验表明:① 0.5 μmol/L 及 以上浓度 JQ-1 对成纤维细胞增殖有明显抑制作用(均P〈0.01)。② JQ-1 可抑制成纤维细胞的迁移活性(均P〈0.01)。③ JQ-1 可抑 制成纤维细胞 COL Ⅰ的分泌及 TGF-β1 的产生(均 P〈0.01)。动物实验表明:① JQ-1 组 COL Ⅰ / Ⅲ总含量较 DMSO 组显著下降,且 COL Ⅰ / Ⅲ比值下降(均 P〈0.05)。② JQ-1 组 α-SMA 的含量较对照组明显下降(均 P〈0.05)。 结论 · JQ-1 可抑制体外人瘢痕成纤维 细胞的增殖、迁移、COL Ⅰ的分泌及 TGF-β1 的产生;其对裸鼠体内的人瘢痕组织中 COL Ⅰ / Ⅲ的分泌及成纤维细胞向肌成纤维细胞 的转化亦有抑制作用。
Abstract_FL Objective·To investigate effect and the possible molecular mechanism of JQ1,a specific inhibitor of bromodomain containing protein 4,on human hypertropic scar.Methods·Primary fibroblasts were isolated from human hypertrophic scars and treated with JQ-1 of different concentrations (0.1,0.5,1.0,2.0,2.5,and 12.5μmol/L) for 48 h.Then CCK-8 kit and wound healing assay were used to measure proliferation and migration of the fibroblasts.ELISA was adopted to detect the levels of collagen type Ⅰ (COL Ⅰ) and TGF-β1 after JQ-1 treatment for 24 h.Thirty-six nude mice were used for hypertrophic scar models.Human hypertrophic scars (1.0 cm× 1.0 cm×0.5 cm) were grafted subcutaneously at the backs of nude mice to establish scar animal models.After 4 weeks,the nude mice were averagely divided into two groups,i.e.JQ-1 group and DMSO group,which were respectively injected with 0.5 μmol/L JQ-1 and 0.1% DMSO each mouse every day.COL Ⅰ / Ⅲ and α-smooth muscle actin (α-SMA) were examined by immunohistochemical method and sirius red staining.Results·Cell experiments showed that JQ-1 with the concentration of 0.5 μmol/L and above significantly inhibited proliferation of fibroblasts (P<0.01).JQ-1 inhibited migration of fibroblast (P<0.01).JQ-1 inhibited secretion of COL Ⅰ and TGF-β1 of fibroblasts (P<0.01).Animal experiments showed that concentration and proportion of COL Ⅰ / Ⅲ in JQ-1 group decreased compared to DMSO group (P<0.05).α-SMA protein expression in JQ-1 group also decreased (P<0.05).Conclusion·JQ-1 can inhibit proliferation,migration,secretion of COL Ⅰ,and production of TGF-β1 of human sear fibroblasts in vitro;it can also inhibit secretion of COL Ⅰ /Ⅲ and fibroblast-myofibroblast differentiation in the human hypertrophic scars in nude mice.
Author 胡艳阁 郝健 张迪 杨川峰 宋晨璐 方勇
AuthorAffiliation 上海交通大学医学院附属第九人民医院烧伤整形科,上海201999
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Author_FL HAO Jian
ZHANG Di
HU Yan-ge
SONG Chen-lu
YANG Chuan-feng
FANG Yong
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Keywords bromodomain containing protein 4
增生性瘢痕
hypertrophic scar
scar fibroblast
JQ-1
瘢痕成纤维细胞
溴结构域蛋白4
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Notes Objective · To investigate effect and the possible molecular mechanism of JQ1, a specific inhibitor of bromodomain containing protein 4, on human hypertropic scar. Methods · Primary fibroblasts were isolated from human hypertrophic scars and treated with JQ-1 of different concentrations (0.1, 0.5, 1.0, 2.0, 2.5, and 12.5 μmol/L) for 48 h. Then CCK-8 kit and wound healing assay were used to measure proliferation and migration of the fibroblasts. ELISA was adopted to detect the levels of collagen type Ⅰ (COL Ⅰ) and TGF-β1 after JQ-1 treatment for 24 h. Thirty-six nude mice were used for hypertrophic scar models. Human hypertrophic scars (1.0 cm×1.0 cm×0.5 cm) were grafted subcutaneously at the backs of nude mice to establish scar animal models. After 4 weeks, the nude mice were averagely divided into two groups, i.e. JQ-1 group and DMSO group, which were respectively injected with 0.5 μmol/L JQ-1 and 0.1% DMSO each mouse every day. COL Ⅰ / Ⅲ and α-smooth muscle actin (α-SMA) were examined by immunohistochemical
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Snippet 目的 · 探究溴结构域蛋白 4(BRD4)特异性抑制剂 JQ-1 对人增生性瘢痕的影响及其可能机制。方法 · 收集人皮肤增生性瘢 痕标本,原代培养皮肤瘢痕成纤维细胞,并进行传代培养,予以0.1、0.5、1.0、2.0、2.5、12.5 μmol/L 不同浓度的JQ-1 干预48 h, CCK-8...
R619+.9; 目的·探究溴结构域蛋白4 (BRD4)特异性抑制剂JQ-1对人增生性瘢痕的影响及其可能机制.方法·收集人皮肤增生性瘢痕标本,原代培养皮肤瘢痕成纤维细胞,并进行传代培养,予以0.1、0.5、1.0、2.0、2.5、12.5 μmol/L不同浓度的JQ-1干预48...
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SubjectTerms JQ-1
增生性瘢痕
溴结构域蛋白4
瘢痕成纤维细胞
Title 溴结构域蛋白4特异性抑制剂JQ-1对人增生性瘢痕的影响
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