scholarly journals Tumour metastasis suppressor, nm23-β, inhibits gelatinase A transcription by interference with transactivator Y-box protein-1 (YB-1)

2002 ◽  
Vol 366 (3) ◽  
pp. 807-816 ◽  
Author(s):  
Sunfa CHENG ◽  
Maria Alexandra ALFONSO-JAUME ◽  
Peter R. MERTENS ◽  
David H. LOVETT
Keyword(s):  
Mesangial Cells ◽  
Simian Virus 40 ◽  
Simian Virus ◽  
Repeat Sequence ◽  
Luciferase Reporter ◽  
Metastasis Suppressor ◽  
Gelatinase A ◽  
Glomerular Mesangial Cells ◽  
Tumour Metastasis ◽  
Β Protein

Gelatinase A transcriptional regulation is the consequence of combinatorial interactions with key promoter and enhancer elements identified within this gene. A potent 40bp enhancer response element, RE-1, located in the near 5′ flanking regions of the rat and human gelatinase A genes drives high-level expression in glomerular mesangial cells (MCs). Southwestern-blot analysis of MC nuclear extracts revealed specific interactions of RE-1 with at least four proteins, of which three have been identified as p53, activator protein 2 and the single-stranded DNA-binding factor Y-box protein-1 (YB-1). In the present study, we report the identification of a fourth 17kDa RE-1-binding protein as the rat homologue (nm23-β) of the human nm23-H1 metastasis suppressor gene. Recombinant nm23-β protein bound only the single-stranded forms of the RE-1 sequence. Mutagenesis revealed direct interaction of nm23-β with a repeat sequence, 5′-GGGTTT-3′, shown previously to specifically interact with YB-1 [Mertens, Harendza, Pollock and Lovett (1997) J. Biol. Chem. 272, 22905—22912], and recombinant nm23-β protein competed for single-stranded YB-1 binding. Transient transfection of MC with an nm23-β expression plasmid within the context of a RE-1/simian virus 40 promoter/luciferase reporter yielded a concentration-dependent repression (80—90%) of luciferase activity in MC and Rat1 fibroblasts. A similar pattern of nm23-β repression was demonstrated within the context of the RE-1/homologous gelatinase A promoter. Co-transfection of nm23-β blocked YB-1-mediated activation of transcription and expression of gelatinase A. Nm23-β may be an important physiological regulator of gelatinase A transcription that acts by competitive interference with the single-stranded transactivator YB-1. Gelatinase A is a key mediator of tumour metastasis, suggesting that competitive suppression of transcription by nm23-β (or the human nm23-H1) may be a component of the reduced metastatic capabilities of cells expressing high levels of this protein.

Lipid deprivation increases surfactant phosphatidylcholine synthesis via a sterol-sensitive regulatory element within the CTP:phosphocholine cytidylyltransferase promoter

2002 ◽  
Vol 362 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Rama K. MALLAMPALLI ◽  
Alan J. RYAN ◽  
James L. CARROLL ◽  
Timothy F. OSBORNE ◽  
Christie P. THOMAS
Keyword(s):  
Specific Binding ◽  
Core Promoter ◽  
Regulatory Element ◽  
Simian Virus 40 ◽  
Simian Virus ◽  
Luciferase Reporter ◽  
Standard Diet ◽  
Flanking Sequence ◽  
Mobility Shift ◽  
Ctp:Phosphocholine Cytidylyltransferase

Lipid-deprived mice increase alveolar surfactant disaturated phosphatidylcholine (DSPtdCho) synthesis compared with mice fed a standard diet by increasing expression of CTP:phosphocholine cytidylyltransferase (CCT), the rate-limiting enzyme for DSPtdCho synthesis. We previously observed that lipid deprivation increases mRNA synthesis for CCT [Ryan, McCoy, Mathur, Field and Mallampalli (2000) J. Lipid Res. 41, 1268–1277]. To evaluate regulatory mechanisms for this gene, we cloned the proximal ∼ 1900bp of the 5′ flanking sequence of the murine CCT gene, coupled this to a luciferase reporter, and examined transcriptional regulation in a murine alveolar epithelial type II cell line (MLE-12). The core promoter was localized to a region between −169 and +71bp, which exhibited strong basal activity comparable with the simian virus 40 promoter. The full-length construct, from −1867 to +71, was induced 2–3-fold when cells were cultured in lipoprotein-deficient serum (LPDS), similar to the level of induction of the endogenous CCT gene. By deletional analysis the sterol regulatory element (SRE) was localized within a 240bp region. LPDS activation of the CCT promoter was abolished by mutation of this SRE, and gel mobility-shift assays demonstrated specific binding of recombinant SRE-binding protein to this element within the CCT promoter. These observations indicate that sterol-regulated expression of CCT is mediated by an SRE within its 5′ flanking region.

scholarly journals Recombinant genomes which express chloramphenicol acetyltransferase in mammalian cells.

1982 ◽  
Vol 2 (9) ◽  
pp. 1044-1051 ◽  
Author(s):  
C M Gorman ◽  
L F Moffat ◽  
B H Howard
Keyword(s):  
Promoter Region ◽  
Mammalian Cells ◽  
Simian Virus 40 ◽  
Simian Virus ◽  
Chloramphenicol Acetyltransferase ◽  
Repeat Sequence ◽  
Monkey Kidney ◽  
Sv40 Promoter ◽  
Hindiii Site ◽  
African Green Monkey Kidney

We constructed a series of recombinant genomes which directed expression of the enzyme chloramphenicol acetyltransferase (CAT) in mammalian cells. The prototype recombinant in this series, pSV2-cat, consisted of the beta-lactamase gene and origin of replication from pBR322 coupled to a simian virus 40 (SV40) early transcription region into which CAT coding sequences were inserted. Readily measured levels of CAT accumulated within 48 h after the introduction of pSV2-cat DNA into African green monkey kidney CV-1 cells. Because endogenous CAT activity is not present in CV-1 or other mammalian cells, and because rapid, sensitive assays for CAT activity are available, these recombinants provided a uniquely convenient system for monitoring the expression of foreign DNAs in tissue culture cells. To demonstrate the usefulness of this system, we constructed derivatives of pSV2-cat from which part or all of the SV40 promoter region was removed. Deletion of one copy of the 72-base-pair repeat sequence in the SV40 promoter caused no significant decrease in CAT synthesis in monkey kidney CV-1 cells; however, an additional deletion of 50 base pairs from the second copy of the repeats reduced CAT synthesis to 11% of its level in the wild type. We also constructed a recombinant, pSV0-cat, in which the entire SV40 promoter region was removed and a unique HindIII site was substituted for the insertion of other promoter sequences.

scholarly journals Long Non-Coding RNA NEAT1 Regulates Pyroptosis in Diabetic Nephropathy via Mediating the miR-34c/NLRP3 Axis

2020 ◽  
Vol 45 (4) ◽  
pp. 589-602 ◽  
Author(s):  
Jin-Feng Zhan ◽  
Hong-Wei Huang ◽  
Chong Huang ◽  
Li-Li Hu ◽  
Wen-Wei Xu
Keyword(s):  
Diabetic Nephropathy ◽  
Target Gene ◽  
Molecular Mechanisms ◽  
Mesangial Cells ◽  
Receptor Protein ◽  
Luciferase Reporter ◽  
Glomerular Mesangial Cells ◽  
Non Coding Rna ◽  
Vitro Model

Introduction: Diabetic nephropathy (DN) is a serious complication of diabetes mellitus and is considered to be a sterile inflammatory disease. Increasing evidence suggest that pyroptosis and subsequent inflammatory response play a key role in the pathogenesis of DN. However, the underlying cellular and molecular mechanisms responsible for pyroptosis in DN are largely unknown. Methods: The rat models of DN were successfully established by single 65 mg/kg streptozotocin treatment. Glomerular mesangial cells were exposed to 30 mmol/L high glucose media for 48 h to mimic the DN environment in vitro. Gene and protein expressions were determined by quantitative real-time PCR and Western blot. Cell viability and pyroptosis were measured by MTT assay and flow cytometry analysis, respectively. The relationship between lncRNA NEAT1, miR-34c, and Nod-like receptor protein-3 (NLRP3) was confirmed by luciferase reporter assay. Results: We found that upregulation of NEAT1 was associated with the increase of pyroptosis in DN models. miR-34c, as a target gene of NEAT1, mediated the effect of NEAT1 on pyroptosis in DN by regulating the expression of NLRP3 as well as the expressions of caspase-1 and interleukin-1β. Either miR-34c inhibition or NLRP3 overexpression could reverse the accentuation of pyroptosis and inflammation by sh-NEAT1 transfection in the in vitro model of DN. Conclusions: Our findings suggested NEAT1 and its target gene miR-34c regulated cell pyroptosis via mediating NLRP3 in DN, providing new insights into understanding the molecular mechanisms of pyroptosis in the pathogenesis of DN.

scholarly journals Transcriptional Regulation Is Affected by Subnuclear Targeting of Reporter Plasmids to PML Nuclear Bodies

2006 ◽  
Vol 26 (23) ◽  
pp. 8814-8825 ◽  
Author(s):  
Gregory J. Block ◽  
Christopher H. Eskiw ◽  
Graham Dellaire ◽  
David P. Bazett-Jones
Keyword(s):  
Transcriptional Regulation ◽  
Transcriptional Activation ◽  
Plasmid Dna ◽  
Simian Virus 40 ◽  
Simian Virus ◽  
Nuclear Bodies ◽  
Luciferase Reporter ◽  
Dependent Manner ◽  
Reporter Plasmid ◽  
Pml Nuclear Bodies

ABSTRACT Whereas the PML protein has been reported to have both transcriptional coactivator and corepressor potential, the contribution of the PML nuclear body (PML NB) itself to transcriptional regulation is not well understood. Here we demonstrate that plasmid DNA artificially tethered to PML or the PML NB-targeting domain of Sp100 is preferentially localized to PML NBs. Using the tethering technique, we targeted a simian virus 40 promoter-driven luciferase reporter plasmid to PML NBs, resulting in the repression of the transgene transcriptional activity. Conversely, the tethering of a cytomegalovirus promoter-containing reporter plasmid resulted in activation. Targeting a minimal eukaryotic promoter did not affect its activity. The expression of targeted promoters could be modulated by altering the cellular concentration of PML NB components, including Sp100 and isoforms of the PML protein. Finally, we demonstrate that ICP0, the promiscuous herpes simplex virus transactivator, increases the level of transcriptional activation of plasmid DNA tethered to the PML NB. We conclude that when PML NB components are artificially tethered to reporter plasmids, the PML NB contributes to the regulation of the tethered DNA in a promoter-dependent manner. Our findings demonstrate that transient transcription assays are sensitive to the subnuclear localization of the transgene plasmid.

scholarly journals Electroporation-Mediated Gene Transfer that Targets Glomeruli

2001 ◽  
Vol 12 (5) ◽  
pp. 949-954 ◽  
Author(s):  
MICHIKO TSUJIE ◽  
YOSHITAKA ISAKA ◽  
HIROYUKI NAKAMURA ◽  
ENYU IMAI ◽  
MASATSUGU HORI
Keyword(s):  
Gene Expression ◽  
Gene Transfer ◽  
Renal Artery ◽  
Mesangial Cells ◽  
Left Kidney ◽  
Expression Vectors ◽  
Nuclear Antigen ◽  
Luciferase Reporter ◽  
Glomerular Mesangial Cells ◽  
Transfection Efficacy

Abstract. Electroporation has been applied to introducing DNA into several organs; however, gene expression was localized around the injected area. Examined was the efficiency of intrarenal injection of DNA followed by in vivo electroporation, using FITC-labeled oligodeoxynucleotides (FITC-ODN) and plasmid DNA expressing β-galactosidase or luciferase. FITC-ODN or expression vectors were injected into the left renal artery; thereafter, the left kidney was electroporated between a pair of tweezer-type electrodes. FITC-ODN were transferred into all glomeruli, and transfected cells were identified as mesangial cells. Four d after transfection of the pCAGGS-LacZ gene, β-galactosidase expression was observed in 75% of glomeruli. To compare the transfection efficacy by electroporation with that by the hemagglutinating virus of Japan (HVJ) liposome method, a luciferase reporter gene, pActLuc, was transferred into glomeruli by either electroporation or the HVJ liposome method. On day 4, electroporation resulted in higher glomerular luciferase activity than did the HVJ liposome method. We also observed that co-transfection of pcEBNA, an expression vector for Epstein-Barr virus nuclear antigen, and poriP-cLuc, oriP-harboring vector, resulted in an eightfold higher luciferase gene expression than simple poriP-cLuc. No histologic damages were seen in glomeruli or tubular epithelial cells. In conclusion, gene transfer into renal artery followed by electroporation was an effective and simple strategy for gene transfer that targets glomerular mesangial cells.

scholarly journals Hyperoside Alleviates High Glucose-Induced Proliferation of Mesangial Cells through the Inhibition of the ERK/CREB/miRNA-34a Signaling Pathway

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Le Zhang ◽  
Qian Dai ◽  
Lanlan Hu ◽  
Hua Yu ◽  
Jing Qiu ◽  
...  
Keyword(s):  
Diabetic Nephropathy ◽  
Signaling Pathway ◽  
High Glucose ◽  
Mesangial Cells ◽  
Viable Cell ◽  
Underlying Mechanism ◽  
Cell Counting ◽  
Luciferase Reporter ◽  
Dependent Manner ◽  
Glomerular Mesangial Cells

Purpose. Hyperoside, a flavonoid isolated from conventional medicinal herbs, has been demonstrated to exert a significant protective effect in diabetic nephropathy. This study aimed to determine the underlying mechanisms, by which hyperoside inhibits high glucose-(HG-) induced proliferation in mouse renal mesangial cells. Methods. Mouse glomerular mesangial cells line (SV40-MES13) was used to study the inhibitory effect of hyperoside on cell proliferation induced by 30 mM glucose, which was used to simulate a diabetic condition. Viable cell count was assessed using the Cell Counting Kit-8 and by the 5-ethynyl-20-deoxyuridine incorporation assay. The underlying mechanism involving miRNA-34a was further investigated by quantitative RT-PCR and transfection with miRNA-34a agomir. The phosphorylation levels of extracellular signal-regulated kinases (ERKs) and cAMP-response element-binding protein (CREB) were measured by Western blotting. The binding region and the critical binding sites of CREB in the miRNA-34a promoter were investigated by the chromatin immunoprecipitation assay and luciferase reporter assay, respectively. Results. We found that hyperoside could significantly decrease HG-induced proliferation of SV40-MES13 cells in a dose-dependent manner, without causing obvious cell death. In addition, hyperoside inhibited the activation of ERK pathway and phosphorylation of its downstream transcriptional factor CREB, as well as the miRNA-34a expression. We further confirmed that CREB-mediated regulation of miRNA-34a is dependent on the direct binding to specific sites in the promoter region of miRNA-34a. Conclusion. Our cumulative results suggested that hyperoside inhibits the proliferation of SV40-MES13 cells through the suppression of the ERK/CREB/miRNA-34a signaling pathway, which provides new insight to the current investigation on therapeutic strategies for diabetic nephropathy.

Increased expression of extracellular matrix proteins and decreased expression of matrix proteases after serial passage of glomerular mesangial cells

1996 ◽  
Vol 109 (10) ◽  
pp. 2521-2528 ◽  
Author(s):  
H.W. Schnaper ◽  
J.B. Kopp ◽  
A.C. Poncelet ◽  
S.C. Hubchak ◽  
W.G. Stetler-Stevenson ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Mesangial Cells ◽  
Serial Passage ◽  
Gelatinase A ◽  
Glomerular Mesangial Cells ◽  
Tgf Beta ◽  
Mrna Species ◽  
Type Iv ◽  
Interstitial Collagenase

The cellular events causing pathological extracellular matrix (ECM) accumulation in vivo are not well understood. Prolonged serial passage of several cell types in culture leads to increased production of extracellular matrix (ECM) proteins, but the mechanism for these putative fibrotic changes is not known. Here, human fetal glomerular mesangial cells were subjected to serial passage (P) in culture and the expression of ECM proteins, proteases and protease inhibitors was comprehensively evaluated. From P11 through P14, a series of phenotypic changes occurred. Steady-state expression of mRNA for alpha 1 chains of type III and type IV (but not type I) collagen, and for laminin beta 1 and gamma 1, increased 2- to 8-fold, while expression of mRNA for interstitial collagenase (MMP-1) and gelatinase A (MMP-2) virtually ceased. Expression of tissue-type plasminogen activator (tPA) mRNA also decreased markedly. Expression of mRNA for the tissue inhibitor of metalloproteinases (TIMP)-1, and of the smaller of two mRNA species for the PA inhibitor PAI-1, ceased by P14. There was a switch in expression of the two species of TIMP-2 mRNA: whereas the ratio of signal intensity comparing the 3.5 kb mRNA species to the 1.0 kb species was 5:1 up to P11, it was reversed (1:5) at P14 and later. Serial passage also led to changes in protein expression, with increased type IV collagen and laminin, but decreased interstitial collagenase and gelatinase A. The cells showed a progressive increase in staining for type IV collagen. These findings define the appearance of a matrix-accumulating phenotype in later-passage mesangial cells. Matrix expansion in vivo has been associated with increased transforming growth factor (TGF)-beta synthesis; the cells were found to show at least 5-fold increased expression of TGF-beta 1 mRNA from P8 to P16. However, treatment of P9 or P10 cells with graded doses of TGF-beta 1 increased expression of both collagen IV and gelatinase A mRNA and did not alter the ratio of signal intensity for TIMP-2 mRNA species. Thus, assumption of a matrix-accumulating phenotype by these cultured fetal glomerular mesangial cells is not accelerated by exogenous TGF-beta. These data describe an in vitro model of mesangial cell matrix turnover in which matrix accumulation could result from a concerted increase in ECM synthesis and decrease in ECM degradation.

Recombinant genomes which express chloramphenicol acetyltransferase in mammalian cells

1982 ◽  
Vol 2 (9) ◽  
pp. 1044-1051
Author(s):  
C M Gorman ◽  
L F Moffat ◽  
B H Howard
Keyword(s):  
Promoter Region ◽  
Mammalian Cells ◽  
Simian Virus 40 ◽  
Simian Virus ◽  
Chloramphenicol Acetyltransferase ◽  
Repeat Sequence ◽  
Monkey Kidney ◽  
Sv40 Promoter ◽  
Hindiii Site ◽  
African Green Monkey Kidney

We constructed a series of recombinant genomes which directed expression of the enzyme chloramphenicol acetyltransferase (CAT) in mammalian cells. The prototype recombinant in this series, pSV2-cat, consisted of the beta-lactamase gene and origin of replication from pBR322 coupled to a simian virus 40 (SV40) early transcription region into which CAT coding sequences were inserted. Readily measured levels of CAT accumulated within 48 h after the introduction of pSV2-cat DNA into African green monkey kidney CV-1 cells. Because endogenous CAT activity is not present in CV-1 or other mammalian cells, and because rapid, sensitive assays for CAT activity are available, these recombinants provided a uniquely convenient system for monitoring the expression of foreign DNAs in tissue culture cells. To demonstrate the usefulness of this system, we constructed derivatives of pSV2-cat from which part or all of the SV40 promoter region was removed. Deletion of one copy of the 72-base-pair repeat sequence in the SV40 promoter caused no significant decrease in CAT synthesis in monkey kidney CV-1 cells; however, an additional deletion of 50 base pairs from the second copy of the repeats reduced CAT synthesis to 11% of its level in the wild type. We also constructed a recombinant, pSV0-cat, in which the entire SV40 promoter region was removed and a unique HindIII site was substituted for the insertion of other promoter sequences.

scholarly journals LncRNA KCNQ1OT1 promotes the development of diabetic nephropathy by regulating miR-93-5p/ROCK2 axis

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Li Zhao ◽  
Huaqian Chen ◽  
Lin Wu ◽  
Zhengdong Li ◽  
Ren Zhang ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Diabetic Nephropathy ◽  
Mesangial Cells ◽  
Coiled Coil ◽  
Cell Counting ◽  
Luciferase Reporter ◽  
Glomerular Mesangial Cells ◽  
Cell Models ◽  
Protein Levels ◽  
Induced Apoptosis

Abstract Background Long non-coding RNAs (lncRNAs) have been reported to play vital roles in diabetic nephropathy (DN). The aim of this study was to explore the function of mechanism of lncRNA KCNQ1 opposite strand/antisense transcript 1 (KCNQ1OT1) in DN. Methods DN cell models were established using high glucose (HG) treatment in human glomerular mesangial cells (HGMC) and human renal glomerular endothelial cells (HRGEC). The expression levels of KCNQ1OT1, microRNA-93-5p (miR-93-5p), and Rho associated coiled-coil containing protein kinase 2 (ROCK2) mRNA was detected by quantitative real-time polymerase chain reaction (qRT-PCR). Cell Counting Kit-8 (CCK-8) assay and flow cytometry were used to detect cell proliferation and apoptosis, respectively. ROCK2 and apoptosis/fibrosis-related protein levels were examined by western blot. The predicted interaction between miR-93-5p and KCNQ1OT1 or ROCK2 was verified by dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay. Results KCNQ1OT1 was upregulated in DN patients and DN cell models. KCNQ1OT1 knockdown inhibited cell proliferation and fibrosis and induced apoptosis in DN cell models. MiR-93-5p was a direct target of KCNQ1OT1, and miR-93-5p inhibition restored the KCNQ1OT1 knockdown-mediated effects on cell proliferation, fibrosis and apoptosis in DN cell models. In addition, ROCK2 was identified as a target of miR-93-5p, and miR-93-5p overexpression suppressed cell proliferation and fibrosis and accelerated apoptosis by targeting ROCK2 in DN cell models. Moreover, KCNQ1OT1 regulated ROCK2 expression by binding to miR-93-5p. Conclusion KCNQ1OT1 knockdown inhibited cell proliferation and fibrosis and induced apoptosis in DN by regulating miR-93-5p/ROCK2 axis, providing potential value for the treatment of DN.

scholarly journals Long non-coding RNA CASC2 restrains high glucose-induced proliferation, inflammation and fibrosis in human glomerular mesangial cells through mediating miR-135a-5p/TIMP3 axis and JNK signaling

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Dongju Zhu ◽  
Xiang Wu ◽  
Qian Xue
Keyword(s):  
High Glucose ◽  
Mesangial Cells ◽  
Protective Role ◽  
Cell Counting ◽  
Luciferase Reporter ◽  
Glomerular Mesangial Cells ◽  
Jnk Signaling ◽  
Non Coding Rna ◽  
Human Glomerular Mesangial Cells ◽  
Long Non Coding Rna

Abstract Background Diabetic nephropathy (DN) is a common complication of diabetes. Long non-coding RNA (lncRNA) cancer susceptibility candidate 2 (CASC2) is reported to exert a protective role in DN by a previous study. The working mechanism underlying the protective role of CASC2 in DN progression was further explored in this study. Methods The expression of CASC2 and microRNA-135a-5p (miR-135a-5p) was determined by real-time quantitative polymerase chain reaction (RT-qPCR). Cell proliferation ability was assessed by Cell Counting Kit-8 (CCK8) assay and 5-ethynyl-29-deoxyuridine (EDU) assay. Enzyme-linked immunosorbent assay (ELISA) was conducted to analyze the production of inflammatory cytokines in the supernatant. Western blot assay was performed to analyze protein expression. Dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay were performed to verify the target relationship between miR-135a-5p and CASC2 or tissue inhibitors of metalloproteinase 3 (TIMP3). Results High glucose (HG) treatment reduced the expression of CASC2 in human glomerular mesangial cells (HMCs) in a time-dependent manner. CASC2 overexpression suppressed HG-induced proliferation, inflammation and fibrosis in HMCs. miR-135a-5p was validated as a target of CASC2, and CASC2 restrained HG-induced influences in HMCs partly by down-regulating miR-135a-5p. miR-135a-5p bound to the 3ʹ untranslated region (3ʹUTR) of TIMP3, and CASC2 positively regulated TIMP3 expression by sponging miR-135a-5p in HMCs. miR-135a-5p silencing inhibited HG-induced effects in HMCs partly by up-regulating its target TIMP3. CASC2 overexpression suppressed HG-induced activation of Jun N-terminal Kinase (JNK) signaling partly through mediating miR-135a-5p/TIMP3 signaling. Conclusions In conclusion, CASC2 alleviated proliferation, inflammation and fibrosis in DN cell model by sponging miR-135a-5p to induce TIMP3 expression.

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