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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 2024; 42:7442-7456. [PMID: 37555593 DOI: 10.1080/07391102.2023.2245043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [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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Korus J, Wydro M, Gołębiowski M, Krakowska K, Poznański P, Musiał K, Konieczny A, Augustyniak-Bartosik H, Stojanowski J, Kusztal MA, Gołębiowski T. Changes of Dissociative Properties of Hemoglobin in Patients with Chronic Kidney Disease. Diagnostics (Basel) 2024; 14:1219. [PMID: 38928635 PMCID: PMC11203233 DOI: 10.3390/diagnostics14121219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/01/2024] [Accepted: 06/05/2024] [Indexed: 06/28/2024] Open
Abstract
Background: The ability of hemoglobin to bind and dissociate oxygen is crucial in delivering oxygen to tissues and is influenced by a range of physiological states, compensatory mechanisms, and pathological conditions. This may be illustrated by the oxyhemoglobin dissociation curve (ODC). The key parameter for evaluating the oxygen affinity to hemoglobin is p50. The aim of this study was to evaluate the impact of hemodialysis on p50 in a group of patients with chronic kidney disease (CKD). An additional goal was to assess the correlation between p50 and the parameters of erythropoiesis, point-of-care testing (POCT), and other laboratory parameters. Methods: One hundred and eighty patients (106 male, 74 female), mean age 62.5 ± 17 years, with CKD stage G4 and G5 were enrolled in this cross-sectional study. Patients were divided into two groups, including 65 hemodialysis (HD) patients and 115 patients not receiving dialysis (non-HD). During the standard procedure of arteriovenous fistula creation, blood samples from the artery (A) and the vein (V) were taken for POCT. The causes of CKD, as well as demographic and comorbidity data, were obtained from medical records and direct interviews. Results: The weekly dose of erythropoietin was higher in HD patients than in non-HD patients (4914 ± 2253 UI vs. 403 ± 798 UI, p < 0.01), but hemoglobin levels did not differ between these groups. In the group of non-HD patients, more advanced metabolic acidosis (MA) was found, compared to the group with HD. In arterial and venosus blood samples, the non-HD group had significantly lower pH, pCO2 and HCO3-. This group had a higher proportion of individuals with MA with HCO3- < 22 mmol/L (42% vs. 24%, p < 0.01). The absolute difference of p50 in arterial and venous blood was determined using the formula Δp50 = (p50-A) - (p50-V). Δp50 was significantly higher in the HD group in comparison to non-HD (0.08 ± 2.05 mmHg vs. -0.66 ± 1.93 mmHg, p = 0,02). There was a negative correlation between pH and the p50 value in arterial (pH-A vs. p50-A, r = -0.56, p < 0.01) and venous blood (pH-V vs. p50-V, r = -0.45, p < 0.01). In non-HD patients, hemoglobin levels correlated negatively with p50 (r = -0.29, p < 0.01), whereas no significant relation was found in HD patients. Conclusions: The ODC in pre-dialysis CKD (non-HD) patients is shifted to the right due to MA, and this is an additional factor influencing erythropoiesis. Hemodialysis restores the natural differences in hemoglobin's dissociation characteristics in the arterial and venous circulation.
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Affiliation(s)
- Justyna Korus
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; (J.K.); (M.W.); (M.G.); (K.K.); (P.P.); (A.K.); (H.A.-B.); (J.S.); (M.A.K.)
| | - Maria Wydro
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; (J.K.); (M.W.); (M.G.); (K.K.); (P.P.); (A.K.); (H.A.-B.); (J.S.); (M.A.K.)
| | - Maciej Gołębiowski
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; (J.K.); (M.W.); (M.G.); (K.K.); (P.P.); (A.K.); (H.A.-B.); (J.S.); (M.A.K.)
| | - Kornelia Krakowska
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; (J.K.); (M.W.); (M.G.); (K.K.); (P.P.); (A.K.); (H.A.-B.); (J.S.); (M.A.K.)
| | - Paweł Poznański
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; (J.K.); (M.W.); (M.G.); (K.K.); (P.P.); (A.K.); (H.A.-B.); (J.S.); (M.A.K.)
| | - Kinga Musiał
- Department of Pediatric Nephrology, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland;
| | - Andrzej Konieczny
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; (J.K.); (M.W.); (M.G.); (K.K.); (P.P.); (A.K.); (H.A.-B.); (J.S.); (M.A.K.)
| | - Hanna Augustyniak-Bartosik
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; (J.K.); (M.W.); (M.G.); (K.K.); (P.P.); (A.K.); (H.A.-B.); (J.S.); (M.A.K.)
| | - Jakub Stojanowski
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; (J.K.); (M.W.); (M.G.); (K.K.); (P.P.); (A.K.); (H.A.-B.); (J.S.); (M.A.K.)
| | - Mariusz Andrzej Kusztal
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; (J.K.); (M.W.); (M.G.); (K.K.); (P.P.); (A.K.); (H.A.-B.); (J.S.); (M.A.K.)
| | - Tomasz Gołębiowski
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; (J.K.); (M.W.); (M.G.); (K.K.); (P.P.); (A.K.); (H.A.-B.); (J.S.); (M.A.K.)
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Li B, Zhang J, Ma N, Li W, You G, Chen G, Zhao L, Wang Q, Zhou H. PEG-conjugated bovine haemoglobin enhances efficiency of chemotherapeutic agent doxorubicin with alleviating DOX-induced splenocardiac toxicity in the breast cancer. ARTIFICIAL CELLS, NANOMEDICINE, AND BIOTECHNOLOGY 2023; 51:120-130. [PMID: 36905212 DOI: 10.1080/21691401.2023.2176865] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Doxorubicin (DOX) is an effective chemotherapeutic agent widely used for cancer treatment. However, hypoxia in tumour tissue and obvious adverse effects particularly cardiotoxicity restricts the clinical usage of DOX. Our study is based on the co-administration of haemoglobin-based oxygen carriers (HBOCs) and DOX in a breast cancer model to investigate HBOCs' ability to enhance chemotherapeutic effectiveness and its capabilities to alleviate the side effects induced by DOX. In an in-vitro study, the results suggested the cytotoxicity of DOX was significantly improved when combined with HBOCs in a hypoxic environment, and produced more γ-H2AX indicating higher DNA damage than free DOX did. Compared with administration of free DOX, combined therapy exhibited a stronger tumour suppressive effect in an in-vivo study. Further mechanism studies showed that the expression of various proteins such as hypoxia-inducible factor-1α (HIF-1α), CD31, CD34, and vascular endothelial growth factor (VEGF) in tumour tissues was also significantly reduced in the combined treatment group. In addition, HBOCs can significantly reduce the splenocardiac toxicity induced by DOX, according to the results of the haematoxylin and eosin (H&E) staining and histological investigation. This study suggested that PEG-conjugated bovine haemoglobin may not only reduce the hypoxia in tumours and increase the efficiency of chemotherapeutic agent DOX, but also alleviate the irreversible heart toxicity caused by DOX-inducted splenocardiac dysregulation.
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Affiliation(s)
- Bingting Li
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Jun Zhang
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China.,The Western Theater General Hospital, Chengdu, P. R. China
| | - Ning Ma
- Clinical Laboratory of Beijing Huairou Hospital, Beijing, P. R. China
| | - Weidan Li
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Guoxing You
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Gan Chen
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Lian Zhao
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Quan Wang
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
| | - Hong Zhou
- Institute of Health Service and Transfusion Medicine, Beijing, P. R. China
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Xu L, Zeng Q, Liang L, Yang Z, Qu M, Li H, Zhang B, Zhang J, Yuan X, Chen L, Fan Z, He L, Nan X, Yue W, Xie X, Pei X. Generation of Rh D-negative blood using CRISPR/Cas9. Cell Prolif 2023; 56:e13486. [PMID: 37096780 PMCID: PMC10623963 DOI: 10.1111/cpr.13486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/27/2023] [Accepted: 04/12/2023] [Indexed: 04/26/2023] Open
Abstract
Blood supply shortages, especially the shortage of rare blood types, threaten the current medical system. Research on stem cells has shed light on in vitro blood cell manufacturing. The in vitro production of universal red blood cells (RBCs) from induced pluripotent stem cells (iPSCs) has become the focus of transfusion medicine. To obtain O-type Rh D-negative blood, we developed O-type Rh D-negative human (h)iPSCs using homology-directed repair (HDR)-based CRISPR/Cas9. HuAiPSCs derived from human umbilical arterial endothelial cells and showing haematopoietic differentiation preferences were selected for gene modification. Guide RNAs (gRNAs) were selected, and a donor template flanked by gRNA-directed homologous arms was set to introduce a premature stop code to RHD exon 2. CRISPR/Cas9 gene editing has resulted in the successful generation of an RHD knockout cell line. The HuAiPSC-A1-RHD-/- cell line was differentiated into haematopoietic stem/progenitor cells and subsequently into erythrocytes in the oxygen concentration-optimized differentiation scheme. HuAiPSC-A1-RHD-/- derived erythrocytes remained positive for the RBC markers CD71 and CD235a. These erythrocytes did not express D antigen and did not agglutinate in the presence of anti-Rh D reagents. In conclusion, taking the priority of haematopoietic preference hiPSCs, the HDR-based CRISPR/Cas9 system and optimizing the erythroid-lineage differentiation protocol, we first generated O-type Rh D-negative universal erythrocytes from RHD knockout HuAiPSCs. Its production is highly efficient and shows great potential for clinical applications.
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Affiliation(s)
- Lei Xu
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
| | - Quan Zeng
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
| | - Liqing Liang
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
| | - Zhou Yang
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
| | - Mingyi Qu
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
| | - Huilin Li
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
| | - Bowen Zhang
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
| | - Jing Zhang
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
| | - Xin Yuan
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
| | - Lin Chen
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
| | - Zeng Fan
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
| | - Lijuan He
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
- Institute of Health Service and Transfusion MedicineBeijingChina
| | - Xue Nan
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
| | - Wen Yue
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
| | - Xiaoyan Xie
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
| | - Xuetao Pei
- Stem Cell and Regenerative Medicine LabBeijing Institute of Radiation MedicineBeijingChina
- South China Research Center for Stem Cell & Regenerative MedicineGuangzhouChina
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Resveratrol, a New Allosteric Effector of Hemoglobin, Enhances Oxygen Supply Efficiency and Improves Adaption to Acute Severe Hypoxia. Molecules 2023; 28:molecules28052050. [PMID: 36903296 PMCID: PMC10004267 DOI: 10.3390/molecules28052050] [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: 01/18/2023] [Revised: 02/09/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023] Open
Abstract
Acute altitude hypoxia represents the cause of multiple adverse consequences. Current treatments are limited by side effects. Recent studies have shown the protective effects of resveratrol (RSV), but the mechanism remains unknown. To address this, the effects of RSV on the structure and function of hemoglobin of adult (HbA) were preliminarily analyzed using surface plasmon resonance (SPR) and oxygen dissociation assays (ODA). Molecular docking was conducted to specifically analyze the binding regions between RSV and HbA. The thermal stability was characterized to further validate the authenticity and effect of binding. Changes in the oxygen supply efficiency of HbA and rat RBCs incubated with RSV were detected ex vivo. The effect of RSV on the anti-hypoxic capacity under acute hypoxic conditions in vivo was evaluated. We found that RSV binds to the heme region of HbA following a concentration gradient and affects the structural stability and rate of oxygen release of HbA. RSV enhances the oxygen supply efficiency of HbA and rat RBCs ex vivo. RSV prolongs the tolerance times of mice suffering from acute asphyxia. By enhancing the oxygen supply efficiency, it alleviates the detrimental effects of acute severe hypoxia. In conclusion, RSV binds to HbA and regulates its conformation, which enhances oxygen supply efficiency and improves adaption to acute severe hypoxia.
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Bluemke E, Stride E, Bulte DP. A General Model to Calculate the Spin-Lattice Relaxation Rate (R1) of Blood, Accounting for Hematocrit, Oxygen Saturation, Oxygen Partial Pressure, and Magnetic Field Strength Under Hyperoxic Conditions. J Magn Reson Imaging 2022; 55:1428-1439. [PMID: 34596290 DOI: 10.1002/jmri.27938] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 09/16/2021] [Accepted: 09/18/2021] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Under normal physiological conditions, the spin-lattice relaxation rate (R1) in blood is influenced by many factors, including hematocrit, field strength, and the paramagnetic effects of deoxyhemoglobin and dissolved oxygen. In addition, techniques such as oxygen-enhanced magnetic resonance imaging (MRI) require high fractions of inspired oxygen to induce hyperoxia, which complicates the R1 signal further. A quantitative model relating total blood oxygen content to R1 could help explain these effects. PURPOSE To propose and assess a general model to estimate the R1 of blood, accounting for hematocrit, SO2 , PO2 , and B0 under both normal physiological and hyperoxic conditions. STUDY TYPE Mathematical modeling. POPULATION One hundred and twenty-six published values of R1 from phantoms and animal models. FIELD STRENGTH/SEQUENCE 5-8.45 T. ASSESSMENT We propose a two-compartment nonlinear model to calculate R1 as a function of hematocrit, PO2 , and B0. The Akaike Information Criterion (AIC) was used to select the best-performing model with the fewest parameters. A previous model of R1 as a function of hematocrit, SO2 , and B0 has been proposed by Hales et al, and our work builds upon this work to make the model applicable under hyperoxic conditions (SO2 > 0.99). Models were assessed using the AIC, mean squared error (MSE), coefficient of determination (R2 ), and Bland-Altman analysis. The effect of volume fraction constants W RBC and W plasma was assessed by the SD of resulting R1. The range of the model was determined by the maximum and minimum B0, hematocrit, SO2 , and PO2 of the literature data points. STATISTICAL TESTS Bland-Altman, AIC, MSE, coefficient of determination (R2 ), SD. RESULTS The model estimates agreed well with the literature values of R1 of blood (R2 = 0.93, MSE = 0.0013 s-2 ), and its performance was consistent across the range of parameters: B0 = 1.5-8.45 T, SO2 = 0.40-1, PO2 = 30-700 mmHg. DATA CONCLUSION Using the results from this model, we have quantified and explained the contradictory decrease in R1 reported in oxygen-enhanced MRI and oxygen-delivery experiments. LEVEL OF EVIDENCE 3 TECHNICAL EFFICACY: Stage 1.
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Affiliation(s)
- Emma Bluemke
- Department of Engineering Sciences, Institute of Biomedical Engineering, University of Oxford, Oxford, UK
| | - Eleanor Stride
- Department of Engineering Sciences, Institute of Biomedical Engineering, University of Oxford, Oxford, UK
| | - Daniel P Bulte
- Department of Engineering Sciences, Institute of Biomedical Engineering, University of Oxford, Oxford, UK
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Lavrinenko IA, Vashanov GA, Nechipurenko YD. New Interpretation of the Hill Coefficient. Biophysics (Nagoya-shi) 2022. [DOI: 10.1134/s0006350922020142] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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8
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Liu X, Jansman MMT, Li W, Kempen P, Thulstrup PW, Hosta-Rigau L. Metal-organic framework-based oxygen carriers with antioxidant protection as a result of a polydopamine coating. Biomater Sci 2021; 9:7257-7274. [PMID: 34608905 DOI: 10.1039/d1bm01005k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Rapid haemorrhage control to restore tissue oxygenation is essential in order to improve survival following traumatic injury. To this end, the current clinical standard relies on the timely administration of donor blood. However, limited availability and portability, special storage requirements, the need for blood type matching and risks of disease transmission result in severe logistical challenges, impeding the use of donor blood in pre-hospital scenarios. Therefore, great effort has been devoted to the development of haemoglobin (Hb)-based oxygen carriers (HBOCs), which could be used as a "bridge" to maintain tissue oxygenation until hospital admission. HBOCs hold the potential to diminish the deleterious effects of acute bleeding and associated mortality rates. We recently presented a novel HBOC, consisting of Hb-loaded metal organic framework (MOF)-based nanoparticles (NPs) (MOFHb-NPs), and demonstrated its ability to reversibly bind and release oxygen. However, a long standing challenge when developing HBOCs is that, over time, Hb oxidizes to non-functional methaemoglobin (metHb). Herein, we address this challenge by modifying the surface of the as-prepared MOFHb-NPs with an antioxidant polydopamine (PDA) coating. The conditions promoting the greatest PDA deposition are first optimized. Next, the ability of the resulting PDA-coated MOFHb-NPs to scavenge important reactive oxygen species is demonstrated both in a test tube and in the presence of two relevant cell lines (i.e., macrophages and endothelial cells). Importantly, this antioxidant protection translates into minimal metHb conversion.
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Affiliation(s)
- Xiaoli Liu
- DTU Health Tech, Centre for Nanomedicine and Theranostics, Technical University of Denmark, Nils Koppels Allé, B423, 2800 Kgs. Lyngby, Denmark.
| | - Michelle M T Jansman
- DTU Health Tech, Centre for Nanomedicine and Theranostics, Technical University of Denmark, Nils Koppels Allé, B423, 2800 Kgs. Lyngby, Denmark.
| | - Wengang Li
- EXPEC Advanced Research Center, Saudi Aramco, PO13889, Saudi Aramco, Dhahran, 31311, Saudi Arabia
| | - Paul Kempen
- DTU Nanolab, National Center for Nano Fabrication and Characterization Technical University of Denmark, Ørseds Plads, Building 347, 2800 Kgs. Lyngby, Denmark
| | - Peter W Thulstrup
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Leticia Hosta-Rigau
- DTU Health Tech, Centre for Nanomedicine and Theranostics, Technical University of Denmark, Nils Koppels Allé, B423, 2800 Kgs. Lyngby, Denmark.
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9
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Kanagarajan S, Carlsson MLR, Chakane S, Kettisen K, Smeds E, Kumar R, Ortenlöf N, Gram M, Åkerström B, Bülow L, Zhu LH. Production of functional human fetal hemoglobin in Nicotiana benthamiana for development of hemoglobin-based oxygen carriers. Int J Biol Macromol 2021; 184:955-966. [PMID: 34153360 DOI: 10.1016/j.ijbiomac.2021.06.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 06/11/2021] [Accepted: 06/13/2021] [Indexed: 10/21/2022]
Abstract
Hemoglobin-based oxygen carriers have long been pursued to meet clinical needs by using native hemoglobin (Hb) from human or animal blood, or recombinantly produced Hb, but the development has been impeded by safety and toxicity issues. Herewith we report the successful production of human fetal hemoglobin (HbF) in Nicotiana benthamiana through Agrobacterium tumefaciens-mediated transient expression. HbF is a heterotetrameric protein composed of two identical α- and two identical γ-subunits, held together by hydrophobic interactions, hydrogen bonds, and salt bridges. In our study, the α- and γ-subunits of HbF were fused in order to stabilize the α-subunits and facilitate balanced expression of α- and γ-subunits in N. benthamiana. Efficient extraction and purification methods enabled production of the recombinantly fused endotoxin-free HbF (rfHbF) in high quantity and quality. The transiently expressed rfHbF protein was identified by SDS-PAGE, Western blot and liquid chromatography-tandem mass spectrometry analyses. The purified rfHbF possessed structural and functional properties similar to native HbF, which were confirmed by biophysical, biochemical, and in vivo animal studies. The results demonstrate a high potential of plant expression systems in producing Hb products for use as blood substitutes.
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Affiliation(s)
- Selvaraju Kanagarajan
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Lomma, Sweden
| | - Magnus L R Carlsson
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Lomma, Sweden
| | - Sandeep Chakane
- Division of Pure and Applied Biochemistry, Department of Chemistry, Lund University, Lund, Sweden
| | - Karin Kettisen
- Division of Pure and Applied Biochemistry, Department of Chemistry, Lund University, Lund, Sweden
| | - Emanuel Smeds
- Division of Infection Medicine, Department of Clinical Sciences in Lund, Lund University, Lund, Sweden
| | - Ranjeet Kumar
- Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Niklas Ortenlöf
- Division of Infection Medicine, Department of Clinical Sciences in Lund, Lund University, Lund, Sweden
| | - Magnus Gram
- Pediatrics, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Bo Åkerström
- Division of Infection Medicine, Department of Clinical Sciences in Lund, Lund University, Lund, Sweden
| | - Leif Bülow
- Division of Pure and Applied Biochemistry, Department of Chemistry, Lund University, Lund, Sweden
| | - Li-Hua Zhu
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Lomma, Sweden.
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