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Davis AG, Zakharov LN, Pluth MD. Reversible Hydrosulfide (HS -) Binding Using Exclusively C-H Hydrogen-Bonding Interactions in Imidazolium Hosts. Inorg Chem 2024; 63:3057-3062. [PMID: 38286007 DOI: 10.1021/acs.inorgchem.3c03922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
H2S is a physiologically important signaling molecule with complex roles in biology and exists primarily as HS- at physiological pH. Despite this anionic character, few investigations have focused on the molecular recognition and reversible binding of this important biological anion. Using a series of imidazole and imidazolium host molecules, we investigate the role of preorganization and charge on HS- binding. Using a macrocyclic bis-imidazolium receptor, we demonstrate the unexpected 2:1 host-guest binding of HS-, which was characterized both in solution and by X-ray crystallography. To the best of our knowledge, this is the first example of this binding stoichiometry for HS- binding. Moreover, the short C-H···S distances of 2.53, 2.54, 2.76, and 2.79 Å are well within the sum of the van der Waals radii of the interacting atoms, which is consistent with strong C-H···S interactions.
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Affiliation(s)
- Amanda G Davis
- Department of Chemistry and Biochemistry, Materials Science Institute, Knight Campus for Accelerating Scientific Impact, Institute of Molecular Biology, 1253 University of Oregon. Eugene, Oregon 97403, United States
| | - Lev N Zakharov
- Department of Chemistry and Biochemistry, Materials Science Institute, Knight Campus for Accelerating Scientific Impact, Institute of Molecular Biology, 1253 University of Oregon. Eugene, Oregon 97403, United States
| | - Michael D Pluth
- Department of Chemistry and Biochemistry, Materials Science Institute, Knight Campus for Accelerating Scientific Impact, Institute of Molecular Biology, 1253 University of Oregon. Eugene, Oregon 97403, United States
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Xie F, Song Y, Yi Y, Jiang X, Ma S, Ma C, Li J, Zhanghuang Z, Liu M, Zhao P, Ma X. Therapeutic Potential of Molecular Hydrogen in Metabolic Diseases from Bench to Bedside. Pharmaceuticals (Basel) 2023; 16:ph16040541. [PMID: 37111299 PMCID: PMC10141176 DOI: 10.3390/ph16040541] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/26/2023] [Accepted: 03/29/2023] [Indexed: 04/29/2023] Open
Abstract
Oxidative stress and chronic inflammation have been implicated in the pathophysiology of metabolic diseases, including diabetes mellitus (DM), metabolic syndrome (MS), fatty liver (FL), atherosclerosis (AS), and obesity. Molecular hydrogen (H2) has long been considered a physiologically inert gas. In the last two decades, accumulating evidence from pre-clinical and clinical studies has indicated that H2 may act as an antioxidant to exert therapeutic and preventive effects on various disorders, including metabolic diseases. However, the mechanisms underlying the action of H2 remain unclear. The purpose of this review was to (1) provide an overview of the current research on the potential effects of H2 on metabolic diseases; (2) discuss the possible mechanisms underlying these effects, including the canonical anti-oxidative, anti-inflammatory, and anti-apoptotic effects, as well as suppression of ER stress, activation of autophagy, improvement of mitochondrial function, regulation of gut microbiota, and other possible mechanisms. The potential target molecules of H2 will also be discussed. With more high-quality clinical trials and in-depth mechanism research, it is believed that H2 will eventually be applied to clinical practice in the future, to benefit more patients with metabolic disease.
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Affiliation(s)
- Fei Xie
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
| | - Yifei Song
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
| | - Yang Yi
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
| | - Xue Jiang
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
| | - Shiwen Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
| | - Chen Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
| | - Junyu Li
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
| | - Ziyi Zhanghuang
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
| | - Mengyu Liu
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
| | - Pengxiang Zhao
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
| | - Xuemei Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
- Beijing Molecular Hydrogen Research Center, Beijing 100124, China
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