Search by keyword or author

Stem Cell-Derived Exosomal microRNAs: An Innovative Approach Towards Diabetes Mellitus

Published: September 11, 2026

Authors

Garima, Ritamay Sau, Meenakshi Dhanawat, Neeraj Mittal, and Pramila Chaubey

Keywords
Diabetes mellitus, Exosomes, Insulin resistance, microRNA, Stem cells

Abstract

Background: Diabetes mellitus is described as a lifelong metabolic disorder where the body cannot regulate its blood sugar level. Despite advancement in the treatment modalities, one of the greatest challenges faced today remains early diagnosis and comprehending the pathophysiology of diabetes. Recent studies indicate that the use of exosomes, which contain proteins and microRNAs (miRNAs) isolated from various cells, is becoming increasingly common due to their significant role in cell-cell interactions.

Purpose: This review aims to highlight the rising significance of exosomes and exosomal miRNAs as novel biomarkers and possible therapeutic targets for diabetes diagnosis and treatment.
Methods: A comprehensive review of the recent literature was conducted on the subject of the biological function of exosomes, the diagnostic potential of exosomal miRNAs, and their implication in the development and severity of diabetes. Besides that, special focus was placed on identifying specific miRNA profiles connected to diabetic diseases.

Results: Exosomal miRNAs have been considered highly promising non-invasive markers in the prognosis and early diagnosis of diabetes. Multiple studies show that changes in the expression of miRNAs are positively correlated with the progression of disease and the occurrence of its complications. Treatment using exosomes has shown great potential in the management of the molecular mechanisms of the disease.

Conclusion: Exosomes, mainly the miRNAs contained by them, are recently discovered, fascinating tools that could be used for the diagnosis and treatment of diabetes. Actually, they can be used both as biomarkers and as drugs, which might dramatically change the way of patient care and disease control.

References

  • Chakraborty, C., Sharma, A. R., Sharma, G., & Lee, S. S. (2020). Therapeutic advances of miRNAs: A preclinical and clinical update. Journal of Advanced Research, 28, 127–138. https://doi.org/10.1016/J.JARE.2020.08.012
  • Chen, A., Wang, H., Su, Y., Zhang, C., Qiu, Y., Zhou, Y., Wan, Y., Hu, B., & Li, Y. (2021). Exosomes: Biomarkers and Therapeutic Targets of Diabetic Vascular Complications. Frontiers in Endocrinology, 12. https://doi.org/10.3389/FENDO.2021.720466
  • Chen, Y., Gao, D. Y., & Huang, L. (2015). In vivo delivery of miRNAs for cancer therapy: Challenges and strategies. Advanced Drug Delivery Reviews, 81, 128–141. https://doi.org/10.1016/J.ADDR.2014.05.009
  • Diener, C., Keller, A., & Meese, E. (2022). Emerging concepts of miRNA therapeutics: from cells to clinic. Trends in Genetics, 38(6), 613–626. https://doi.org/10.1016/J.TIG.2022.02.006
  • Dilsiz, N. (2024). A comprehensive review on recent advances in exosome isolation and characterization: Toward clinical applications. Translational Oncology, 50, 102121. https://doi.org/10.1016/J.TRANON.2024.102121
  • Dorcely, B., Katz, K., Jagannathan, R., Chiang, S. S., Oluwadare, B., Goldberg, I. J., & Bergman, M. (2017). Novel biomarkers for prediabetes, diabetes, and associated complications. Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy, 10, 345. https://doi.org/10.2147/DMSO.S100074
  • Duan, Y., Luo, Q., Wang, Y., Ma, Y., Chen, F., Zhu, X., & Shi, J. (2020). Adipose mesenchymal stem cell-derived extracellular vesicles containing microRNA-26a-5p target TLR4 and protect against diabetic nephropathy. Journal of biological chemistry, 295(37), 12868-12884. https://doi.org/10.1074/JBC.RA120.012522
  • Ebrahimi, R., Bahiraee, A., Niazpour, F., Emamgholipour, S., & Meshkani, R. (2019). The role of microRNAs in the regulation of insulin signaling pathway with respect to metabolic and mitogenic cascades: A review. Journal of Cellular Biochemistry, 120(12), 19290–19309. https://doi.org/10.1002/JCB.29299
  • Galicia-Garcia, U., Benito-Vicente, A., Jebari, S., Larrea-Sebal, A., Siddiqi, H., Uribe, K. B., … & Martín, C. (2020). Pathophysiology of type 2 diabetes mellitus. International journal of molecular sciences, 21(17), 6275. https://doi.org/10.3390/IJMS21176275
  • Gieroba, B., Kryska, A., & Sroka-Bartnicka, A. (2025). Type 2 diabetes mellitus – conventional therapies and future perspectives in innovative treatment. Biochemistry and Biophysics Reports, 42, 102037. https://doi.org/10.1016/J.BBREP.2025.102037
  • Guan, C. Y., Tian, S., Cao, J. L., Wang, X. Q., Ma, X., & Xia, H. F. (2020). Down-Regulated miR-21 in Gestational Diabetes Mellitus Placenta Induces PPAR-α to Inhibit Cell Proliferation and Infiltration. Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy, 13, 3009. https://doi.org/10.2147/DMSO.S253920
  • Guay, C., & Regazzi, R. (2013). Circulating microRNAs as novel biomarkers for diabetes mellitus. Nature Reviews. Endocrinology, 9(9), 513–521. https://doi.org/10.1038/NRENDO.2013.86
  • Han, F., Wang, C., Cheng, P., Liu, T., & Wang, W. S. (2023). Bone marrow mesenchymal stem cells derived exosomal miRNAs can modulate diabetic bone-fat imbalance. Frontiers in Endocrinology, 14. https://doi.org/10.3389/FENDO.2023.1149168
  • Huo, W., Li, Y., Zhang, Y., & Li, H. (2020). Mesenchymal stem cells-derived exosomal microRNA-21-5p downregulates PDCD4 and ameliorates erectile dysfunction in a rat model of diabetes mellitus. FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology, 34(10), 13345–13360. https://doi.org/10.1096/FJ.202000102RR
  • Jin, W., Li, Y., Yu, M., Ren, D., Han, C., & Guo, S. (2025). Advances of exosomes in diabetic wound healing. Burns & Trauma, 13, tkae078. https://doi.org/10.1093/BURNST/TKAE078
  • Kalluri, R., & LeBleu, V. S. (2020). The biology , function , and biomedical applications of exosomes. Science (New York, N.Y.), 367(6478). https://doi.org/10.1126/SCIENCE.AAU6977
  • Kim, T., Hong, J. W., & Lee, L. P. (2025). Efficient methods of isolation and purification of extracellular vesicles. Nano Convergence, 12(1), 45. https://doi.org/10.1186/s40580-025-00509-x
  • Kumar, A., Ren, Y., Sundaram, K., Mu, J., Sriwastva, M. K., Dryden, G. W., Lei, C., Zhang, L., Yan, J., Zhang, X., Park, J. W., Merchant, M. L., Teng, Y., & Zhang, H. G. (2021). miR-375 prevents high-fat diet-induced insulin resistance and obesity by targeting the aryl hydrocarbon receptor and bacterial tryptophanase ( tnaA) gene. Theranostics, 11(9), 4061–4077. https://doi.org/10.7150/THNO.52558
  • Lakhter, A. J., Pratt, R. E., Moore, R. E., Doucette, K. K., Maier, B. F., DiMeglio, L. A., & Sims, E. K. (2018). Beta cell extracellular vesicle miR-21-5p cargo is increased in response to inflammatory cytokines and serves as a biomarker of type 1 diabetes. Diabetologia, 61(5), 1124–1134. https://doi.org/10.1007/S00125-018-4559-5
  • LaPierre, M. P., & Stoffel, M. (2017). MicroRNAs as stress regulators in pancreatic beta cells and diabetes. Molecular Metabolism, 6(9), 1010–1023. https://doi.org/10.1016/J.MOLMET.2017.06.020
  • Li, J., Zhang, Y., Ye, Y., Li, D., Liu, Y., Lee, E., Zhang, M., Dai, X., Zhang, X., Wang, S., Zhang, J., Jia, W., Zen, K., Vidal-Puig, A., Jiang, X., & Zhang, C. Y. (2021a). Pancreatic β cells control glucose homeostasis via the secretion of exosomal miR-29 family. Journal of Extracellular Vesicles, 10(3). https://doi.org/10.1002/JEV2.12055
  • Li, M., Fang, F., Sun, M., Zhang, Y., Hu, M., & Zhang, J. (2022). Extracellular vesicles as bioactive nanotherapeutics: An emerging paradigm for regenerative medicine. Theranostics, 12(11), 4879. https://doi.org/10.7150/THNO.72812
  • Li, N., Hu, L., Li, J., Ye, Y., Bao, Z., Xu, Z., Chen, D., Tang, J., & Gu, Y. (2024). The Immunomodulatory effect of exosomes in diabetes: a novel and attractive therapeutic tool in diabetes therapy. Frontiers in Immunology, 15, 1357378. https://doi.org/10.3389/fimmu.2024.1357378
  • Li, Q., Hu, W., Huang, Q., Yang, J., Li, B., Ma, K., Wei, Q., Wang, Y., Su, J., Sun, M., Cui, S., Yang, R., Li, H., Fu, X., & Zhang, C. (2023). MiR146a-loaded engineered exosomes released from silk fibroin patch promote diabetic wound healing by targeting IRAK1. Signal Transduction and Targeted Therapy, 8(1). https://doi.org/10.1038/s41392-022-01263-w
  • Li, W., Jin, L., Cui, Y., Nie, A., Xie, N., & Liang, G. (2021b). Bone marrow mesenchymal stem cells-induced exosomal microRNA-486-3p protects against diabetic retinopathy through TLR4/NF-κB axis repression. Journal of Endocrinological Investigation, 44(6), 1193–1207. https://doi.org/10.1007/S40618-020-01405-3
  • Li, W., Jin, L. yu, Cui, Y. bo, & Xie, N. (2021c). Human umbilical cord mesenchymal stem cells-derived exosomal microRNA-17-3p ameliorates inflammatory reaction and antioxidant injury of mice with diabetic retinopathy via targeting STAT1. International Immunopharmacology, 90. https://doi.org/10.1016/J.INTIMP.2020.107010
  • Liang, G., Qin, Z., Luo, Y., Yin, J., Shi, Z., Wei, R., & Ma, W. (2022). Exosomal microRNA-133b-3p from bone marrow mesenchymal stem cells inhibits angiogenesis and oxidative stress via FBN1 repression in diabetic retinopathy. Gene Therapy, 29(12), 710–719. https://doi.org/10.1038/S41434-021-00310-5
  • Liu, X., Li, J., & Li, X. (2020). miR-142-5p regulates the progression of diabetic retinopathy by targeting IGF1. International Journal of Immunopathology and Pharmacology, 34. https://doi.org/10.1177/2058738420909041
  • Lu, Y., Mai, Z., Cui, L., & Zhao, X. (2023). Engineering exosomes and biomaterial-assisted exosomes as therapeutic carriers for bone regeneration. Stem Cell Research & Therapy 2023 14:1, 14(1), 1–19. https://doi.org/10.1186/S13287-023-03275-X
  • Lv, Q., Deng, J., Chen, Y., Wang, Y., Liu, B., & Liu, J. (2020). Engineered Human Adipose Stem-Cell-Derived Exosomes Loaded with miR-21-5p to Promote Diabetic Cutaneous Wound Healing. Molecular Pharmaceutics, 17(5), 1723–1733. https://doi.org/10.1021/ACS.MOLPHARMACEUT.0C00177
  • Magliano, D. J., Boyko, E. J., & committee, D. A. 11th edition scientific. (2025). 3. The global picture of diabetes. https://www.ncbi.nlm.nih.gov/books/NBK618744/
  • Mao, Y., Schoenborn, J., Wang, Z., Chen, X., Matson, K., Mohan, R., Zhang, S., Tang, X., Arunagiri, A., Arvan, P., & Tang, X. (2022). Transgenic overexpression of microRNA-30d in pancreatic beta-cells progressively regulates beta-cell function and identity. Scientific Reports 2022 12:1, 12(1), 1–12. https://doi.org/10.1038/s41598-022-16174-7
  • O’Brien, J., Hayder, H., Zayed, Y., & Peng, C. (2018). Overview of microRNA biogenesis, mechanisms of actions, and circulation. Frontiers in Endocrinology, 9(AUG), 402. https://doi.org/10.3389/fendo.2018.00402
  • Pandey, A., Ajgaonkar, S., Jadhav, N., Saha, P., Gurav, P., Panda, S., Mehta, D., & Nair, S. (2022). Current Insights into miRNA and lncRNA Dysregulation in Diabetes: Signal Transduction, Clinical Trials and Biomarker Discovery. Pharmaceuticals, 15(10). https://doi.org/10.3390/PH15101269
  • Patoulias, D. I. (2018). Is miRNA-375 a promising biomarker for early detection and monitoring of patients with type 2 diabetes? Archives of Medical Sciences. Atherosclerotic Diseases, 3(1), e119. https://doi.org/10.5114/AMSAD.2018.78775
  • Pegtel, D. M., & Gould, S. J. (2019). Exosomes. Annual Review of Biochemistry, 88, 487–514. https://doi.org/10.1146/ANNUREV-BIOCHEM-013118-111902
  • Quiñones-Vico, M. I., Sanabria-de la Torre, R., Sánchez-Díaz, M., Sierra-Sánchez, Á., Montero-Vílchez, T., Fernández-González, A., & Arias-Santiago, S. (2021). The Role of Exosomes Derived From Mesenchymal Stromal Cells in Dermatology. Frontiers in Cell and Developmental Biology, 9. https://doi.org/10.3389/fcell.2021.647012
  • Rasmi, Y., Farahani, M., Asl, E. R., Barati, S., Naseri, N., & Ghoshal, K. (2025). Exploring the role of miR-126 in diabetes and its complications: a comprehensive review. Diabetology & Metabolic Syndrome, 17(1), 405. https://doi.org/10.1186/s13098-025-01897-0
  • Rodríguez, J. E., & Campbell, K. M. (2017). Racial and Ethnic Disparities in Prevalence and Care of Patients With Type 2 Diabetes. Clinical Diabetes : A Publication of the American Diabetes Association, 35(1), 66. https://doi.org/10.2337/CD15-0048
  • Rohde, P. D., Nyegaard, M., Kjolby, M., & Sørensen, P. (2021). Multi-Trait Genomic Risk Stratification for Type 2 Diabetes. Frontiers in Medicine, 8. https://doi.org/10.3389/FMED.2021.711208
  • Rottiers, V., & Näär, A. M. (2012). MicroRNAs in Metabolism and Metabolic Disorders. Nature Reviews. Molecular Cell Biology, 13(4), 239. https://doi.org/10.1038/NRM3313
  • Ruan, Q., Wang, T., Kameswaran, V., Wei, Q., Johnson, D. S., Matschinsky, F., Shi, W., & Chen, Y. H. (2011). The microRNA-21-PDCD4 axis prevents type 1 diabetes by blocking pancreatic β cell death. Proceedings of the National Academy of Sciences of the United States of America, 108(29), 12030–12035. https://doi.org/10.1073/PNAS.1101450108
  • Rupaimoole, R., & Slack, F. J. (2017). MicroRNA therapeutics: towards a new era for the management of cancer and other diseases. Nature Reviews Drug Discovery 2017 16:3, 16(3), 203–222. https://doi.org/10.1038/nrd.2016.246
  • Sharma, R., Kumari, M., Mishra, S., Chaudhary, D. K., Kumar, A., Avni, B., & Tiwari, S. (2021). Exosomes Secreted by Umbilical Cord Blood-Derived Mesenchymal Stem Cell Attenuate Diabetes in Mice. Journal of Diabetes Research, 2021. https://doi.org/10.1155/2021/9534574
  • Sidhom, K., Obi, P. O., & Saleem, A. (2020). A Review of Exosomal Isolation Methods: Is Size Exclusion Chromatography the Best Option? International Journal of Molecular Sciences, 21(18), 6466. https://doi.org/10.3390/IJMS21186466
  • Soltani, S., Mansouri, K., Emami Aleagha, M. S., Moasefi, N., Yavari, N., Shakouri, S. K., Notararigo, S., Shojaeian, A., Pociot, F., & Yarani, R. (2022). Extracellular Vesicle Therapy for Type 1 Diabetes. Frontiers in Immunology, 13. https://doi.org/10.3389/FIMMU.2022.865782
  • Soria, F. N., Pampliega, O., Bourdenx, M., Meissner, W. G., Bezard, E., & Dehay, B. (2017). Exosomes, an Unmasked Culprit in Neurodegenerative Diseases. Frontiers in Neuroscience, 11(JAN). https://doi.org/10.3389/FNINS.2017.00026
  • Su, T., Xiao, Y., Xiao, Y., Guo, Q., Li, C., Huang, Y., Deng, Q., Wen, J., Zhou, F., & Luo, X. H. (2019). Bone Marrow Mesenchymal Stem Cells-Derived Exosomal MiR-29b-3p Regulates Aging-Associated Insulin Resistance. ACS Nano, 13(2). https://doi.org/10.1021/ACSNANO.8B09375
  • Swain, A., Jena, S. R., & Samanta, L. (2025). Smart nanocarriers for cancer: harnessing exosomes and lipid systems in photodynamic and immunotherapy. Frontiers in Immunology, 16, 1687953. https://doi.org/10.3389/FIMMU.2025.1687953
  • Wang, H. (2020). MicroRNA, Diabetes Mellitus and Colorectal Cancer. Biomedicines, 8(12), 1–17. https://doi.org/10.3390/BIOMEDICINES8120530
  • Wang, S., Shi, S., Jiang, X., Yang, G., Wu, D., Li, K., Zhong, V. W., & Du, X. (2025). Role of Plasma-Derived Exosomal MicroRNAs in Mediating Type 2 Diabetes Remission. Nutrients, 17(15), 2450. https://doi.org/10.3390/NU17152450/S1
  • Włodarski, A., Strycharz, J., Wróblewski, A., Kasznicki, J., Drzewoski, J., & Śliwińska, A. (2020). The Role of microRNAs in Metabolic Syndrome-Related Oxidative Stress. International Journal of Molecular Sciences, 21(18), 1–54. https://doi.org/10.3390/IJMS21186902
  • Xu, Z., Zhang, Y., Ding, J., Hu, W., Tan, C., Wang, M., Tang, J., & Xu, Y. (2018). miR-17-3p Downregulates Mitochondrial Antioxidant Enzymes and Enhances the Radiosensitivity of Prostate Cancer Cells. Molecular Therapy. Nucleic Acids, 13, 64. https://doi.org/10.1016/J.OMTN.2018.08.009
  • Yang, H., Xu, H., Wang, Z., Li, X., Wang, P., Cao, X., Xu, Z., Lv, D., Rong, Y., Chen, M., Tang, B., Hu, Z., Deng, W., & Zhu, J. (2023). Analysis of miR-203a-3p/SOCS3-mediated induction of M2 macrophage polarization to promote diabetic wound healing based on epidermal stem cell-derived exosomes. Diabetes Research and Clinical Practice, 197, 110573. https://doi.org/10.1016/J.DIABRES.2023.110573
  • Yang, J. (2020). Umbilical Cord-Derived Mesenchymal Stem Cell-Derived Exosomes Combined Pluronic F127 Hydrogel Promote Chronic Diabetic Wound Healing and Complete Skin Regeneration.
  • Yang, M., Chen, J., & Chen, L. (2022). The roles of mesenchymal stem cell-derived exosomes in diabetes mellitus and its related complications. Frontiers in Endocrinology, 13. https://doi.org/10.3389/FENDO.2022.1027686
  • Yu, Y., Du, H., Wei,S., Feng, L., Li, J., Yao, F., Zhang, M., Hatch, G. M., & Chen, L. (2018). Adipocyte-Derived Exosomal MiR-27a Induces Insulin Resistance in Skeletal Muscle Through Repression of PPARγ. Theranostics, 8(8), 2171–2188. https://doi.org/10.7150/THNO.22565
  • Yuan, P., Ding, L., Chen, H., Wang, Y., Li, C., Zhao, S., Yang, X., Ma, Y., Zhu, J., Qi, X., Zhang, Y., Xia, X., & Zheng, J. C. (2021). Neural Stem Cell-Derived Exosomes Regulate Neural Stem Cell Differentiation Through miR-9-Hes1 Axis. Frontiers in Cell and Developmental Biology, 9, 1181. https://doi.org/10.3389/fcell.2021.601600
  • Zhang, B., Bi, Y., Wang, K., Guo, X., Liu, Z., Li, J., & Wu, M. (2024). Stem Cell-Derived Extracellular Vesicles: Promising Therapeutic Opportunities for Diabetic Wound Healing. International Journal of Nanomedicine, 19, 4357. https://doi.org/10.2147/IJN.S461342
  • Zhang, J., Tian, X., Li, Y., Fang, C., Yang, F., Dong, L., Shen, Y., Pu, S., Li, J., Chang, D., Lei, L., & Yu, X. (2025). Stem Cell-Derived Exosomes: A Comprehensive Review of Biomedical Applications, Challenges, and Future Directions. International Journal of Nanomedicine, 20, 10857. https://doi.org/10.2147/IJN.S527137
  • Zhang, L., Ouyang, P., He, G., Wang, X., Song, D., Yang, Y., & He, X. (2020). Exosomes from microRNA‐126 overexpressing mesenchymal stem cells promote angiogenesis by targeting the PIK3R2‐mediated PI3K/Akt signalling pathway. Journal of Cellular and Molecular Medicine, 25(4), 2148. https://doi.org/10.1111/JCMM.16192
  • Zhang, X., Jiang, Y., Huang, Q., Wu, Z., Pu, H., Xu, Z., Li, B., Lu, X., Yang, X., Qin, J., & Peng, Z. (2021). Exosomes derived from adipose-derived stem cells overexpressing glyoxalase-1 protect endothelial cells and enhance angiogenesis in type 2 diabetic mice with limb ischemia. Stem Cell Research & Therapy, 12(1). https://doi.org/10.1186/S13287-021-02475-7
  • Zheng, Y., Liu, Y., Wang, L., Xu, H., Lu, Z., Xuan, Y., Meng, W., Ye, L., Fang, D., Zhou, Y., Ke, K., Liu, Y., & An, M. (2021). MicroRNA-126 suppresses the proliferation and migration of endothelial cells in experimental diabetic retinopathy by targeting polo-like kinase 4. International Journal of Molecular Medicine, 47(1), 151. https://doi.org/10.3892/IJMM.2020.4775
  • Zhou, B., Zhou, N., Jiang, J., Zhang, X., Zhao, X., Duan, Y., & Zhang, Y. (2025). Exosomal miR-25 from Mesenchymal stem cells inhibits T cells migration and Alleviates Type 1 diabetes mellitus by Targeting CXCR3 models. Gene, 936. https://doi.org/10.1016/J.GENE.2024.149098
  • Zhou, Y., & Tan, C. (2020). miRNAs in Adipocyte-Derived Extracellular Vesicles: Multiple Roles in Development of Obesity-Associated Disease. Frontiers in Molecular Biosciences, 7. https://doi.org/10.3389/FMOLB.2020.00171

How to Cite

Garima, Ritamay Sau, Meenakshi Dhanawat, Neeraj Mittal, and Pramila Chaubey. Stem Cell-Derived Exosomal microRNAs: An Innovative Approach Towards Diabetes Mellitus. J. Pharm. Technol. Res. Manag.. 2026, 14, 60-73
Stem Cell-Derived Exosomal microRNAs: An Innovative Approach Towards Diabetes Mellitus

Current Issue

PeriodicityBiannually
Issue-1June
Issue-2December
ISSN Print2321-2217
ISSN Online2321-2225
RNI No.CHAENG/2013/50088

This work is licensed under a Creative Commons Attribution 4.0 International License.

Articles in Journal of Pharmaceutical Technology, Research and Management (J. Pharm. Tech. Res. Management) by Chitkara University Publications are Open Access articles that are published with licensed under a Creative Commons Attribution- CC-BY 4.0 International License. Based on a work at https://jptrm.chitkara.edu.in/. This license permits one to use, remix, tweak and reproduction in any medium, even commercially provided one give credit for the original creation.

View Legal Code of the above-mentioned license, https://creativecommons.org/licenses/by/4.0/legalcode

View Licence Deed here https://creativecommons.org/licenses/by/4.0/

Creative Commons License

Journal of Pharmaceutical Technology, Research and Management by Chitkara University Publications is licensed under a Creative Commons Attribution 4.0 International License.
Based on a work at https://jptrm.chitkara.edu.in//

Visibility, Memberships and Ethics

×

Thank You!

Your form has been submitted successfully.