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Wise TJ, Ott ME, Joseph MS, Welsby IJ, Darrow CC, McMahon TJ. Modulation of the allosteric and vasoregulatory arms of erythrocytic oxygen transport. Front Physiol 2024; 15:1394650. [PMID: 38915775 PMCID: PMC11194670 DOI: 10.3389/fphys.2024.1394650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 04/24/2024] [Indexed: 06/26/2024] Open
Abstract
Efficient distribution of oxygen (O2) to the tissues in mammals depends on the evolved ability of red blood cell (RBC) hemoglobin (Hb) to sense not only O2 levels, but metabolic cues such as pH, PCO2, and organic phosphates, and then dispense or take up oxygen accordingly. O2 delivery is the product of not only oxygen release from RBCs, but also blood flow, which itself is also governed by vasoactive molecular mediators exported by RBCs. These vascular signals, including ATP and S-nitrosothiols (SNOs) are produced and exported as a function of the oxygen and metabolic milieu, and then fine-tune peripheral metabolism through context-sensitive vasoregulation. Emerging and repurposed RBC-oriented therapeutics can modulate either or both of these allosteric and vasoregulatory activities, with a single molecule or other intervention influencing both arms of O2 transport in some cases. For example, organic phosphate repletion of stored RBCs boosts the negative allosteric effector 2,3 biphosphoglycerate (BPG) as well as the anti-adhesive molecule ATP. In sickle cell disease, aromatic aldehydes such as voxelotor can disfavor sickling by increasing O2 affinity, and in newer generations, these molecules have been coupled to vasoactive nitric oxide (NO)-releasing adducts. Activation of RBC pyruvate kinase also promotes a left shift in oxygen binding by consuming and lowering BPG, while increasing the ATP available for cell health and export on demand. Further translational and clinical investigation of these novel allosteric and/or vasoregulatory approaches to modulating O2 transport are expected to yield new insights and improve the ability to correct or compensate for anemia and other O2 delivery deficits.
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Affiliation(s)
- Thomas J. Wise
- Duke University School of Medicine, Durham, NC, United States
| | - Maura E. Ott
- Duke University School of Medicine, Durham, NC, United States
| | - Mahalah S. Joseph
- Duke University School of Medicine, Durham, NC, United States
- Florida International University School of Medicine, Miami, FL, United States
| | - Ian J. Welsby
- Duke University School of Medicine, Durham, NC, United States
| | - Cole C. Darrow
- Duke University School of Medicine, Durham, NC, United States
| | - Tim J. McMahon
- Duke University School of Medicine, Durham, NC, United States
- Durham VA Health Care System, Durham, NC, United States
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Shu P, You G, Li W, Chen Y, Chu Z, Qin D, Wang Y, Zhou H, Zhao L. Cefmetazole sodium as an allosteric effector that regulates the oxygen supply efficiency of adult hemoglobin. J Biomol Struct Dyn 2023:1-15. [PMID: 37555593 DOI: 10.1080/07391102.2023.2245043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 07/17/2023] [Indexed: 08/10/2023]
Abstract
Allosteric effectors play an important role in regulating the oxygen supply efficiency of hemoglobin for blood storage and disease treatment. However, allosteric effectors that are approved by the US FDA are limited. In this study, cefmetazole sodium (CS) was found to bind adult hemoglobin (HbA) from FDA library (1338 compounds) using surface plasmon resonance imaging high-throughput screening. Using surface plasmon resonance (SPR), the interaction between CS and HbA was verified. The oxygen dissociation curve of HbA after CS interaction showed a significant increase in P50 and theoretical oxygen-release capacity. Acid-base sensitivity (SI) exhibited a decreasing trend, although not significantly different. An oxygen dissociation assay indicated that CS accelerated HbA deoxygenation. Microfluidic modulated spectroscopy showed that CS changed the ratio of the alpha-helix to the beta-sheet of HbA. Molecular docking suggested CS bound to HbA's β-chains via hydrogen bonds, with key amino acids being N282, K225, H545, K625, K675, and V544.The results of molecular dynamics simulations (MD) revealed a stable orientation of the HbA-CS complex. CS did not significantly affect the P50 of bovine hemoglobin, possibly due to the lack of Valβ1 and Hisβ2, indicating that these were the crucial amino acids involved in HbA's oxygen affinity. Competition between the 2,3-Diphosphoglycerate (2,3-DPG) and CS in the HbA interaction was also determined by SPR, molecular docking and MD. In summary, CS could interact with HbA and regulate the oxygen supply efficiency via forming stable hydrogen bonds with the β-chains of HbA, and showed competition with 2,3-DPG.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Peilin Shu
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People's Liberation Army, Beijing, P.R. C
| | - Guoxing You
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People's Liberation Army, Beijing, P.R. C
| | - Weidan Li
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People's Liberation Army, Beijing, P.R. C
| | - Yuzhi Chen
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People's Liberation Army, Beijing, P.R. C
| | - Zongtang Chu
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People's Liberation Army, Beijing, P.R. C
| | - Dong Qin
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People's Liberation Army, Beijing, P.R. C
| | - Ying Wang
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People's Liberation Army, Beijing, P.R. C
| | - Hong Zhou
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People's Liberation Army, Beijing, P.R. C
| | - Lian Zhao
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People's Liberation Army, Beijing, P.R. C
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Chu Z, Wang Y, You G, Wang Q, Ma N, Li B, Zhao L, Zhou H. The P50 value detected by the oxygenation-dissociation analyser and blood gas analyser. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2020; 48:867-874. [DOI: 10.1080/21691401.2020.1770272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Zongtang Chu
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People’s Liberation Army, Beijing, P.R. China
| | - Ying Wang
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People’s Liberation Army, Beijing, P.R. China
| | - Guoxing You
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People’s Liberation Army, Beijing, P.R. China
| | - Quan Wang
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People’s Liberation Army, Beijing, P.R. China
| | - Ning Ma
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People’s Liberation Army, Beijing, P.R. China
| | - Bingting Li
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People’s Liberation Army, Beijing, P.R. China
| | - Lian Zhao
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People’s Liberation Army, Beijing, P.R. China
| | - Hong Zhou
- Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Academy of Military Science of the Chinese People’s Liberation Army, Beijing, P.R. China
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Evans BA, Ansari AK, Srinivasan AJ, Kamyszek RW, Stoner KC, Fuller M, Poisson JL, Welsby IJ. Rejuvenation solution as an adjunct cold storage solution maintains physiological haemoglobin oxygen affinity during early-storage period of red blood cells. Vox Sang 2020; 115:388-394. [PMID: 32166752 DOI: 10.1111/vox.12910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/31/2020] [Accepted: 02/23/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Red blood cell (RBC) units accumulate morphologic and metabolic lesions during storage before transfusion. Pyruvate-inosine-phosphate-adenine (PIPA) solutions (Rejuvesol, Biomet, Warsaw, IN) can be incubated with RBC units to mitigate storage lesions. This study proposes a PIPA treatment process, termed cold 'rejuvenation', using Rejuvesol as an adjunct additive solution, to prevent biomechanical storage lesions while avoiding the 1 h PIPA incubation required with standard PIPA treatment. We compared the efficacy of cold to standard 'rejuvenation' in improving metabolic lesions that occur during cold storage of RBCs, without altering function. METHODS Twelve leucoreduced, A-positive RBC units were obtained. Each unit was aliquoted into either control (standard storage), washed (W), standard rejuvenation (SR) or cold rejuvenation (CR) groups, the latter two requiring washing. A volume-adjusted dose of Rejuvesol was instilled into the CR group upon receipt (Day 3). After 15 days of storage, p50, RBC deformability, in-bag haemolysis and mechanical fragility were analysed. 'Any treatment' is defined as W, SR and CR, with comparisons in reference to control. RESULTS Higher p50s were seen in rejuvenated groups (>30 mmHg vs. <19 mmHg; P < 0·0001). Any treatment significantly increased elongation index (P = 0·034) but did not significantly increase in-bag haemolysis (P = 0·062). Mechanical fragility was not significantly different between groups (P = 0·055) at baseline, but the control (CTL) group was more fragile after 2 h in a cardiac bypass simulation than any treatment (P < 0·0001). CONCLUSIONS This study demonstrates that rejuvenation (standard or cold) prevents the leftward p50 shift of storage lesions without detrimental effect on RBC deformity, in-bag haemolysis or mechanical fragility.
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Affiliation(s)
| | | | - Amudan J Srinivasan
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | | | | | - Matthew Fuller
- Department of Biostatistics, Duke University, Durham, NC, USA
| | - Jessica L Poisson
- Department of Pathology, Duke University Medical Center, Pittsburgh, PA, USA
| | - Ian J Welsby
- Department of Anesthesiology, Duke University Medical Center, Pittsburgh, PA, USA
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Omer S. Rejuvenation of Banked Packed Red Blood Cells. Is it Clinically Relevant? Semin Thorac Cardiovasc Surg 2018; 30:142-143. [PMID: 29684547 DOI: 10.1053/j.semtcvs.2018.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Shuab Omer
- Division of Cardiothoracic Surgery, Baylor College of Medicine, Houston, Texas; Division of Cardiothoracic Surgery, Michael E. DeBakey VA Medical Center, Houston, Texas.
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