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Ha SE, Singh R, Jin B, Baek G, Jorgensen BG, Zogg H, Debnath S, Park HS, Cho H, Watkins CM, Cho S, Kim MS, Lee MY, Yu TY, Jeong JW, Ro S. miR-10a/b-5p-NCOR2 Regulates Insulin-Resistant Diabetes in Female Mice. Int J Mol Sci 2024; 25:10147. [PMID: 39337631 PMCID: PMC11432729 DOI: 10.3390/ijms251810147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2024] [Revised: 09/14/2024] [Accepted: 09/16/2024] [Indexed: 09/30/2024] Open
Abstract
Gender and biological sex have distinct impacts on the pathogenesis of type 2 diabetes (T2D). Estrogen deficiency is known to predispose female mice to T2D. In our previous study, we found that a high-fat, high-sucrose diet (HFHSD) induces T2D in male mice through the miR-10b-5p/KLF11/KIT pathway, but not in females, highlighting hormonal disparities in T2D susceptibility. However, the underlying molecular mechanisms of this hormonal protection in females remain elusive. To address this knowledge gap, we utilized ovariectomized, estrogen-deficient female mice, fed them a HFHSD to induce T2D, and investigated the molecular mechanisms involved in estrogen-deficient diabetic female mice, relevant cell lines, and female T2D patients. Initially, female mice fed a HFHSD exhibited a delayed onset of T2D, but ovariectomy-induced estrogen deficiency promptly precipitated T2D without delay. Intriguingly, insulin (INS) was upregulated, while insulin receptor (INSR) and protein kinase B (AKT) were downregulated in these estrogen-deficient diabetic female mice, indicating insulin-resistant T2D. These dysregulations of INS, INSR, and AKT were mediated by a miR-10a/b-5p-NCOR2 axis. Treatment with miR-10a/b-5p effectively alleviated hyperglycemia in estrogen-deficient T2D female mice, while β-estradiol temporarily reduced hyperglycemia. Consistent with the murine findings, plasma samples from female T2D patients exhibited significant reductions in miR-10a/b-5p, estrogen, and INSR, but increased insulin levels. Our findings suggest that estrogen protects against insulin-resistant T2D in females through miR-10a/b-5p/NCOR2 pathway, indicating the potential therapeutic benefits of miR-10a/b-5p restoration in female T2D management.
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Affiliation(s)
- Se Eun Ha
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Rajan Singh
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Byungchang Jin
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Gain Baek
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Brian G. Jorgensen
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Hannah Zogg
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Sushmita Debnath
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Hahn Sung Park
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Hayeong Cho
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Claudia Marie Watkins
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Sumin Cho
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
| | - Min-Seob Kim
- Department of Physiology, Wonkwang Digestive Disease Research Institute & Institute of Wonkwang Medical Science, School of Medicine, Wonkwang University, Iksan 54538, Republic of Korea; (M.-S.K.); (M.Y.L.)
| | - Moon Young Lee
- Department of Physiology, Wonkwang Digestive Disease Research Institute & Institute of Wonkwang Medical Science, School of Medicine, Wonkwang University, Iksan 54538, Republic of Korea; (M.-S.K.); (M.Y.L.)
| | - Tae Yang Yu
- Division of Endocrinology and Metabolism, Department of Medicine, Wonkwang University School of Medicine, Iksan 54538, Republic of Korea; (T.Y.Y.); (J.W.J.)
| | - Jin Woo Jeong
- Division of Endocrinology and Metabolism, Department of Medicine, Wonkwang University School of Medicine, Iksan 54538, Republic of Korea; (T.Y.Y.); (J.W.J.)
| | - Seungil Ro
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, NV 89557, USA; (S.E.H.); (B.J.); (G.B.); (H.Z.); (H.S.P.); (S.C.)
- RosVivo Therapeutics, Applied Research Facility, 1664 N. Virginia St., Reno, NV 89557, USA
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Singh R, Ha SE, Park HS, Debnath S, Cho H, Baek G, Yu TY, Ro S. Sustained Effectiveness and Safety of Therapeutic miR-10a/b in Alleviating Diabetes and Gastrointestinal Dysmotility without Inducing Cancer or Inflammation in Murine Liver and Colon. Int J Mol Sci 2024; 25:2266. [PMID: 38396943 PMCID: PMC10888952 DOI: 10.3390/ijms25042266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 02/10/2024] [Accepted: 02/11/2024] [Indexed: 02/25/2024] Open
Abstract
microRNAs (miRNAs) are key regulators of both physiological and pathophysiological mechanisms in diabetes and gastrointestinal (GI) dysmotility. Our previous studies have demonstrated the therapeutic potential of miR-10a-5p mimic and miR-10b-5p mimic (miR-10a/b mimics) in rescuing diabetes and GI dysmotility in murine models of diabetes. In this study, we elucidated the safety profile of a long-term treatment with miR-10a/b mimics in diabetic mice. Male C57BL/6 mice were fed a high-fat, high-sucrose diet (HFHSD) to induce diabetes and treated by five subcutaneous injections of miR-10a/b mimics for a 5 month period. We examined the long-term effects of the miRNA mimics on diabetes and GI dysmotility, including an assessment of potential risks for cancer and inflammation in the liver and colon using biomarkers. HFHSD-induced diabetic mice subcutaneously injected with miR-10a/b mimics on a monthly basis for 5 consecutive months exhibited a marked reduction in fasting blood glucose levels with restoration of insulin and significant weight loss, improved glucose and insulin intolerance, and restored GI transit time. In addition, the miR-10a/b mimic-treated diabetic mice showed no indication of risk for cancer development or inflammation induction in the liver, colon, and blood for 5 months post-injections. This longitudinal study demonstrates that miR-10a/b mimics, when subcutaneously administered in diabetic mice, effectively alleviate diabetes and GI dysmotility for 5 months with no discernible risk for cancer or inflammation in the liver and colon. The sustained efficacy and favorable safety profiles position miR-10a/b mimics as promising candidates in miRNA-based therapeutics for diabetes and GI dysmotility.
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Affiliation(s)
- Rajan Singh
- Department of Physiology and Cell Biology, School of Medicine, University of Nevada, Reno, NV 89557, USA; (R.S.); (S.E.H.); (H.S.P.); (S.D.); (H.C.); (G.B.); (T.Y.Y.)
| | - Se Eun Ha
- Department of Physiology and Cell Biology, School of Medicine, University of Nevada, Reno, NV 89557, USA; (R.S.); (S.E.H.); (H.S.P.); (S.D.); (H.C.); (G.B.); (T.Y.Y.)
| | - Han Sung Park
- Department of Physiology and Cell Biology, School of Medicine, University of Nevada, Reno, NV 89557, USA; (R.S.); (S.E.H.); (H.S.P.); (S.D.); (H.C.); (G.B.); (T.Y.Y.)
| | - Sushmita Debnath
- Department of Physiology and Cell Biology, School of Medicine, University of Nevada, Reno, NV 89557, USA; (R.S.); (S.E.H.); (H.S.P.); (S.D.); (H.C.); (G.B.); (T.Y.Y.)
| | - Hayeong Cho
- Department of Physiology and Cell Biology, School of Medicine, University of Nevada, Reno, NV 89557, USA; (R.S.); (S.E.H.); (H.S.P.); (S.D.); (H.C.); (G.B.); (T.Y.Y.)
| | - Gain Baek
- Department of Physiology and Cell Biology, School of Medicine, University of Nevada, Reno, NV 89557, USA; (R.S.); (S.E.H.); (H.S.P.); (S.D.); (H.C.); (G.B.); (T.Y.Y.)
| | - Tae Yang Yu
- Department of Physiology and Cell Biology, School of Medicine, University of Nevada, Reno, NV 89557, USA; (R.S.); (S.E.H.); (H.S.P.); (S.D.); (H.C.); (G.B.); (T.Y.Y.)
| | - Seungil Ro
- Department of Physiology and Cell Biology, School of Medicine, University of Nevada, Reno, NV 89557, USA; (R.S.); (S.E.H.); (H.S.P.); (S.D.); (H.C.); (G.B.); (T.Y.Y.)
- RosVivo Therapeutics, Applied Research Facility, 1664 N. Virginia St., Reno, NV 89557, USA
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