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Cited by 699

The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.

MicroRNA-192 in diabetic kidney glomeruli and its function in TGF-β-induced collagen expression via inhibition of E-box repressors

Open access
Kato, Mitsuo, Zhang, Jane, Wang, Mei, Lanting, Linda, Yuan, Hang, Rossi, John J., Natarajan, Rama·2007·Proceedings of the National Academy of Sciences

Abstract

Key features of diabetic nephropathy (DN) include the accumulation of extracellular matrix proteins such as collagen 1-α 1 and -2 (Col1a1 and -2). Transforming growth factor β1 (TGF-β), a key regulator of these extracellular matrix genes, is increased in mesangial cells (MC) in DN. By microarray profiling, we noted that TGF-β increased Col1a2 mRNA in mouse MC (MMC) but also decreased mRNA levels of an E-box repressor, δEF1. TGF-β treatment or short hairpin RNAs targeting δEF1 increased enhancer activity of upstream E-box elements in the Col1a2 gene. TGF-β also decreased the expression of Smad-interacting protein 1 (SIP1), another E-box repressor similar to δEF1. Interestingly, we noted that SIP1 is a target of microRNA-192 (miR-192), a key miR highly expressed in the kidney. miR-192 levels also were increased by TGF-β in MMC. TGF-β treatment or transfection with miR-192 decreased endogenous SIP1 expression as well as reporter activity of a SIP1 3′ UTR-containing luciferase construct in MMC. Conversely, a miR-192 inhibitor enhanced the luciferase activity, confirming SIP1 to be a miR-192 target. Furthermore, miR-192 synergized with δEF1 short hairpin RNAs to increase Col1a2 E-box-luc activity. Importantly, the in vivo relevance was noted by the observation that miR-192 levels were enhanced significantly in glomeruli isolated from streptozotocin-injected diabetic mice as well as diabetic db/db mice relative to corresponding nondiabetic controls, in parallel with increased TGF-β and Col1a2 levels. These results uncover a role for miRs in the kidney and DN in controlling TGF-β-induced Col1a2 expression by down-regulating E-box repressors.

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Metadata

Authors
Kato, M., Zhang, J., Wang, M., Lanting, L., Yuan, H., Rossi, J. J., & Natarajan, R.
Venue
Proceedings of the National Academy of Sciences
Published
2007-02-27
Volume
104
Issue
9
Pages
3432-3437
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2076100820
Cited by
699
References
33
FWCI
21.40
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: MicroRNA-192 in diabetic kidney glomeruli and its function in TGF-β-induced collagen expression via inhibition of E-box repressors. https://app.cochat.ai/papers/10.1073/pnas.0611192104
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Kato, M., Zhang, J., Wang, M., Lanting, L., Yuan, H., Rossi, J. J., & Natarajan, R. (2007). MicroRNA-192 in diabetic kidney glomeruli and its function in TGF-β-induced collagen expression via inhibition of E-box repressors. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0611192104

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