Regulation of expression of the chondrocytic phenotype in a skeletal cell line (CFK2) in vitro

Regulation of expression of the chondrocytic phenotype in a skeletal cell line (CFK2) in vitro
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体外骨骼细胞系(CFK2)软骨细胞表型表达的调节

DOI:
--
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发表时间:
1993
影响因子:
6.2
通讯作者:
D. Goltzman
D. Goltzman
中科院分区:
医学1区
文献类型:
--
作者:
S. Bernier;D. Goltzman

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我们在体外检测了一个已建立的胚胎大鼠颅骨骨骼细胞系(Cfk2)中与分化的软骨细胞相关的表型特征的自发和调节表达。Cfk2细胞延长培养后,细胞层出现糖胺多聚糖和II型胶原,并伴有细胞灶性结节的形成。此外,在分化的群体(Dcfk2细胞)中观察到了mRNA编码连接蛋白、软骨特异的蛋白多糖核心蛋白和凝血酶反应蛋白的诱导。在Dcfk2细胞传代培养后,这些mRNAs的表达至少持续了两代。Dcfk2细胞还表现出甲状旁腺激素(PTH)刺激的腺苷环化酶活性增强。多肽调节因子EGF和PTH可促进Cfk2细胞的增殖,而类固醇药物地塞米松和维甲酸则可抑制其增殖。EGF和维甲酸可抑制细胞斑的形成和糖胺多糖的沉积,抑制mRNA编码的Link蛋白的表达。相反,PTH和地塞米松可促进局灶性细胞结节的形成,增加基质沉积和Link蛋白的表达。这些研究表明,Cfk2细胞系可以作为大鼠软骨细胞的非转化模型,在该模型中可以观察到软骨基质成分的表达的诱导和调节。因此,该系提供了一种独特的可再生的软骨细胞前体细胞来源,并为评估软骨细胞分化和软骨基质产生的时间和环境控制提供了一个极好的体外模型。
We Have Examined In Vitro The Spontaneous And Regulated Expression Of Phenotypic Characteristics Associated With Differentiated Chondrocytes In An Established Skeletal Cell Line (Cfk2) Derived From Fetal Rat Calvariae. Extended Culture Of Cfk2 Cells Resulted In The Appearance Of Glycosaminoglycans And Type Ii Collagen In The Cell Layer In Association With The Formation Of Focal Nodes Of Cells. In Addition, Induction Of Mrna‐En‐Coding Link Protein, Cartilage‐Specific Proteoglycan Core Protein, And Thrombospondin Was Observed In The Differentiated Population (Dcfk2 Cells). The Expression Of These Mrnas Was Present For At Least Two Passages After Subculturing The Dcfk2 Cells. The Dcfk2 Cells Also Demonstrated Enhanced Parathyroid Hormone (Pth)‐Stimulated Adenylate Cyclase Activity. Proliferation Of Cfk2 Cells Was Stimulated By The Peptide Regulatory Factors Egf And Pth And Inhibited By The Steroidal Agents Dexamethasone And Retinoic Acid. Egf And Retinoic Acid Inhibited The Formation Of Cell Foci And Glycosaminoglycan Deposition And The Expression Of Mrna‐Encoding Link Protein. In Contrast, Pth And Dexamethasone Enhanced The Formation Of Focal Cellular Nodes And Augmented Matrix Deposition And Link Protein Mrna Expression. These Studies Therefore Show That The Cfk2 Cell Line Can Serve As A Nontransformed Model Of Rat Chondrocytic Cells In Which Both Induction And Regulation Of The Expression Of Cartilaginous Matrix Components Can Be Observed. This Line Thereby Provides A Unique Renewable Source Of Chondrocytic Precursor Cells And An Excellent In Vitro Model For Evaluating Temporal And Environmental Control Of Chondrocyte Differentiation And Cartilage Matrix Production.
从 cDNA 克隆推导出的大鼠软骨蛋白多糖核心蛋白的完整一级结构。
DOI: --
发表时间: 1987
期刊: The Journal of biological chemistry
影响因子: --
作者:
Doege,K;Sasaki,M;Horigan,E;Hassell,JR;Yamada,Y
通讯作者: Yamada,Y
糖皮质激素刺激体外兔肋软骨细胞产生的软骨基质蛋白多糖的合成。
DOI: --
发表时间: 1985
期刊: The Journal of biological chemistry
影响因子: --
作者:
Kato,Y;Gospodarowicz,D
通讯作者: Gospodarowicz,D
甲状旁腺激素刺激肾小管细胞产生肌醇三磷酸和二酰甘油。
DOI: 10.1172/jci112788
发表时间: 1987
期刊: The Journal of clinical investigation
影响因子: --
作者:
Hruska,KA;Moskowitz,D;Esbrit,P;Civitelli,R;Westbrook,S;Huskey,M
通讯作者: Huskey,M
连接蛋白 cDNA 序列揭示了串联重复的蛋白质结构。
DOI: 10.1073/pnas.83.11.3761
发表时间: 1986
影响因子: 11.1
作者:
Doege,K;Hassell,JR;Caterson,B;Yamada,Y
通讯作者: Yamada,Y
利用琼脂糖培养测定转化生长因子β和表皮生长因子对兔关节软骨细胞的影响。
DOI: --
发表时间: 1985
期刊: Cancer research
影响因子: 11.2
作者:
Skantze,KA;Brinckerhoff,CE;Collier,JP
通讯作者: Collier,JP