Minglong Qiu, Leilei Chang, Guoqing Tang, Wenkai Ye, Yiming Xu, Nijiati Tulufu, Zhou Dan, Jin Qi, Lianfu Deng, Changwei Li
{"title":"Activation of the osteoblastic HIF-1α pathway partially alleviates the symptoms of STZ-induced type 1 diabetes mellitus via RegIIIγ","authors":"Minglong Qiu, Leilei Chang, Guoqing Tang, Wenkai Ye, Yiming Xu, Nijiati Tulufu, Zhou Dan, Jin Qi, Lianfu Deng, Changwei Li","doi":"10.1038/s12276-024-01257-4","DOIUrl":null,"url":null,"abstract":"The hypoxia-inducible factor-1α (HIF-1α) pathway coordinates skeletal bone homeostasis and endocrine functions. Activation of the HIF-1α pathway increases glucose uptake by osteoblasts, which reduces blood glucose levels. However, it is unclear whether activating the HIF-1α pathway in osteoblasts can help normalize glucose metabolism under diabetic conditions through its endocrine function. In addition to increasing bone mass and reducing blood glucose levels, activating the HIF-1α pathway by specifically knocking out Von Hippel‒Lindau (Vhl) in osteoblasts partially alleviated the symptoms of streptozotocin (STZ)-induced type 1 diabetes mellitus (T1DM), including increased glucose clearance in the diabetic state, protection of pancreatic β cell from STZ-induced apoptosis, promotion of pancreatic β cell proliferation, and stimulation of insulin secretion. Further screening of bone-derived factors revealed that islet regeneration-derived protein III gamma (RegIIIγ) is an osteoblast-derived hypoxia-sensing factor critical for protection against STZ-induced T1DM. In addition, we found that iminodiacetic acid deferoxamine (SF-DFO), a compound that mimics hypoxia and targets bone tissue, can alleviate symptoms of STZ-induced T1DM by activating the HIF-1α-RegIIIγ pathway in the skeleton. These data suggest that the osteoblastic HIF-1α-RegIIIγ pathway is a potential target for treating T1DM. The skeleton isn’t just for support, it also helps control body functions. This research looked at how a specific process in bone-forming cells, called the hypoxia-inducible factor-1 alpha (HIF-1α) pathway, affects sugar breakdown and diabetes. The scientists discovered that triggering this process in these cells can help manage sugar levels in diabetes through a protein named RegIIIγ. They also found that a substance named SF-DFO, which imitates low oxygen conditions and focuses on bone tissue, can somewhat ease type 1 diabetes symptoms by triggering the HIF-1α-RegIIIγ process in the skeleton. This implies that this specific process in bone-forming cells could be a possible treatment for type 1 diabetes. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.","PeriodicalId":50466,"journal":{"name":"Experimental and Molecular Medicine","volume":null,"pages":null},"PeriodicalIF":9.5000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11297314/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Experimental and Molecular Medicine","FirstCategoryId":"3","ListUrlMain":"https://www.nature.com/articles/s12276-024-01257-4","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The hypoxia-inducible factor-1α (HIF-1α) pathway coordinates skeletal bone homeostasis and endocrine functions. Activation of the HIF-1α pathway increases glucose uptake by osteoblasts, which reduces blood glucose levels. However, it is unclear whether activating the HIF-1α pathway in osteoblasts can help normalize glucose metabolism under diabetic conditions through its endocrine function. In addition to increasing bone mass and reducing blood glucose levels, activating the HIF-1α pathway by specifically knocking out Von Hippel‒Lindau (Vhl) in osteoblasts partially alleviated the symptoms of streptozotocin (STZ)-induced type 1 diabetes mellitus (T1DM), including increased glucose clearance in the diabetic state, protection of pancreatic β cell from STZ-induced apoptosis, promotion of pancreatic β cell proliferation, and stimulation of insulin secretion. Further screening of bone-derived factors revealed that islet regeneration-derived protein III gamma (RegIIIγ) is an osteoblast-derived hypoxia-sensing factor critical for protection against STZ-induced T1DM. In addition, we found that iminodiacetic acid deferoxamine (SF-DFO), a compound that mimics hypoxia and targets bone tissue, can alleviate symptoms of STZ-induced T1DM by activating the HIF-1α-RegIIIγ pathway in the skeleton. These data suggest that the osteoblastic HIF-1α-RegIIIγ pathway is a potential target for treating T1DM. The skeleton isn’t just for support, it also helps control body functions. This research looked at how a specific process in bone-forming cells, called the hypoxia-inducible factor-1 alpha (HIF-1α) pathway, affects sugar breakdown and diabetes. The scientists discovered that triggering this process in these cells can help manage sugar levels in diabetes through a protein named RegIIIγ. They also found that a substance named SF-DFO, which imitates low oxygen conditions and focuses on bone tissue, can somewhat ease type 1 diabetes symptoms by triggering the HIF-1α-RegIIIγ process in the skeleton. This implies that this specific process in bone-forming cells could be a possible treatment for type 1 diabetes. This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.
期刊介绍:
Experimental & Molecular Medicine (EMM) stands as Korea's pioneering biochemistry journal, established in 1964 and rejuvenated in 1996 as an Open Access, fully peer-reviewed international journal. Dedicated to advancing translational research and showcasing recent breakthroughs in the biomedical realm, EMM invites submissions encompassing genetic, molecular, and cellular studies of human physiology and diseases. Emphasizing the correlation between experimental and translational research and enhanced clinical benefits, the journal actively encourages contributions employing specific molecular tools. Welcoming studies that bridge basic discoveries with clinical relevance, alongside articles demonstrating clear in vivo significance and novelty, Experimental & Molecular Medicine proudly serves as an open-access, online-only repository of cutting-edge medical research.