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Wang Y, Wang L, Yu W, Gao D, You G, Li P, Zhang S, Zhang J, Hu T, Zhao L, Zhou H. A PEGylated bovine hemoglobin as a potent hemoglobin-based oxygen carrier. Biotechnol Prog 2016; 33:252-260. [DOI: 10.1002/btpr.2380] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 08/05/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Ying Wang
- Inst. of Transfusion Medicine, Academy of Military Medical Sciences; HaiDian Beijing China
| | - Linli Wang
- Inst. of Transfusion Medicine, Academy of Military Medical Sciences; HaiDian Beijing China
- Dept. of Biochemical Engineering, College of Environmental and Chemical Engineering; Yanshan University; Qinhuangdao China
| | - Weili Yu
- State Key Laboratory of Biochemical Engineering, Inst. of Process Engineering, Chinese Academy of Sciences; Beijing China
| | - Dawei Gao
- Dept. of Biochemical Engineering, College of Environmental and Chemical Engineering; Yanshan University; Qinhuangdao China
| | - Guoxing You
- Inst. of Transfusion Medicine, Academy of Military Medical Sciences; HaiDian Beijing China
| | - Penglong Li
- Inst. of Transfusion Medicine, Academy of Military Medical Sciences; HaiDian Beijing China
| | - Shan Zhang
- Inst. of Transfusion Medicine, Academy of Military Medical Sciences; HaiDian Beijing China
- Dept. of Biochemical Engineering, College of Environmental and Chemical Engineering; Yanshan University; Qinhuangdao China
| | - Jun Zhang
- Inst. of Transfusion Medicine, Academy of Military Medical Sciences; HaiDian Beijing China
| | - Tao Hu
- State Key Laboratory of Biochemical Engineering, Inst. of Process Engineering, Chinese Academy of Sciences; Beijing China
| | - Lian Zhao
- Inst. of Transfusion Medicine, Academy of Military Medical Sciences; HaiDian Beijing China
| | - Hong Zhou
- Inst. of Transfusion Medicine, Academy of Military Medical Sciences; HaiDian Beijing China
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Meng F, Tsai AG, Intaglietta M, Acharya SA. PEGylation of αα-Hb using succinimidyl propionic acid PEG 5K: Conjugation chemistry and PEG shell structure dictate respectively the oxygen affinity and resuscitation fluid like properties of PEG αα-Hbs. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2014; 43:270-81. [PMID: 24597567 DOI: 10.3109/21691401.2014.885443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PEGylation of intramolecularly crosslinked Hb has been studied here to overcome the limitation of dissociation of Hb tetramers. New hexa and deca PEGylated low oxygen affinity PEG-ααHbs have been generated. Influence of PEG conjugation chemistry and the PEG shell structure on the functional properties as well as PEGylation induced plasma expander like properties of the protein has been delineated. The results have established that in the design of PEG-Hbs as oxygen therapeutics, the influence of conjugation chemistry and the PEG shell structure on the oxygen affinity of Hb needs to be optimized independently besides optimizing the PEG shell structure for inducing resuscitation fluid like properties.
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Affiliation(s)
- Fantao Meng
- Hematology Division, Department of Medicine, Albert Einstein College of Medicine of Yeshiva University , Bronx, NY , USA
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Meng F, Manjula BN, Tsai AG, Cabrales P, Intaglietta M, Smith PK, Prabhakaran M, Acharya SA. Hexa-thiocarbamoyl phenyl PEG5K Hb: vasoactivity and structure: influence of rigidity of the conjugation linkage on the PEGylation induced plasma expander-like solution properties of PEG-Hb adducts. Protein J 2009; 28:199-212. [PMID: 19653083 DOI: 10.1007/s10930-009-9185-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new hexaPEGylated hemoglobin, (TCP-PEG5K)(6)-Hb (TCP, thiocarbamoyl phenyl) has been developed using PEG-phenyl-isothiocyanate and its vasoactivity and structure has been investigated. Of the six PEG5K chains of (TCP-PEG5K)(6)-Hb, 4 are conjugated to the alpha-amino groups of Hb, and the other 2 chains are distributed on epsilon-amino groups, identified as Lys-40(alpha) (approximately 45%), Lys-56(alpha) (approximately 25%), and Lys-8(beta) (approximately 24%). The studies with hamster infused with a bolus of a 4 gm % solution of (TCP-PEG5K)(6)-Hb equivalent to 10% of their blood volume have established that this new hexaPEGylated Hb is vasoinactive. The viscosity and the colloidal osmotic pressure of (TCP-PEG5K)(6)-Hb at 4% is 1.9 cP and 69.7 mmHg, respectively. The molecular radius of (TCP-PEG5K)(6)-Hb is about 4.6 nm and is significantly smaller than hexaPEGylated Hbs developed using other direct and extension arm facilitated PEGylation platform. The presence of an outside the central cavity intramolecular crosslink, succinimidophenyl-PEG2K between Cys-93(beta, beta') in (TCP-PEG5K)(6)-betabeta-Hb strongly impacts its solution properties. These patterns of influence suggest that the inter-dimeric interactions in (TCP-PEG5K)(6)-Hb is weakened just as with other direct PEGylation platforms, and (SP-PEG5K)(6)-Hb generated by EAF-PEGylation is unique in not inducing this effect. A comparison of the properties of hexaPEGylated Hbs establishes that rigidity of the conjugation linkage between PEG and Hb plays a significant influence on the resultant dictating solution properties and/structure/conformation of PEG-Hb adduct.
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Affiliation(s)
- Fantao Meng
- Department of Physiology and Biophysics, Albert Einstein College of Medicine of Yeshiva University, 1300 Morris Park Avenue, Bronx, NY, USA
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Acharya SA, Friedman JM, Manjula BN, Intaglietta M, Tsai AG, Winslow RM, Malavalli A, Vandegriff K, Smith PK. Enhanced Molecular Volume of Conservatively Pegylated Hb: (SP-PEG5K)6-HbA is Non-Hypertensive. ACTA ACUST UNITED AC 2009; 33:239-55. [PMID: 16152690 DOI: 10.1081/bio-200066365] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Recent studies have suggested that the "pressor effect" of acellular Hb is a consequence of perturbation of the macro-and microcirculatory system in multiple ways, and that PEGylation is an effective approach for controlling the same. In an attempt to confirm this concept, a new and simple thiolation mediated, maleimide chemistry-based conservative PEGylation protocol has been developed to conjugate multiple copies of PEG-chains to Hb. This approach combines the high reactivity of maleimides towards thiols with the propensity of iminothiolane to derivatize the epsilon-amino groups of proteins into reactive thiol groups, with conservation of their positive charge. One of the PEGylated products, namely (SP-PEG5K)6-HbA, that carries on an average six copies of PEG5000 chains per Hb, is non-hypertensive in hamster top load and in rat 50% exchange transfusion models. This hexa-PEGylated-Hb has (i) a hydrodynamic volume corresponding to that of an oligomerized Hb of 256kDa, (ii) a molecular radius of approximately 6.8 nm, (iii) high oxygen affinity, (iv) lowered Bohr effect, and (v) increased viscosity and colloidal osmotic pressure. These properties of (SP-PEG5K)6-HbA are consistent with the emerging new paradigms for the design of Hb based oxygen carriers and confirm the concept that the "pressor effect" of Hb is a multifactorial event. The thiolation mediated maleimide chemistry-based PEGylation protocol described here for the generation of (SP-PEG5K)6-Hb is simple, highly efficient, and is carried out under oxy conditions. The results demonstrate that a non-hypertensive PEG-Hb can be generated by conjugation of a lower number of PEG chains than previously reported.
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Yu M, Han J, Dai M, Cui P, Li H, Liu Q, Xiu R. Influence of PEG-conjugated hemoglobin on tumor oxygenation and response to chemotherapy. ACTA ACUST UNITED AC 2008; 36:551-61. [PMID: 19065307 DOI: 10.1080/10731190802556674] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Hypoxic tumors are significantly more malignant, metastatic, radio- and chemoresistant. The use of artificial oxygen carriers represents a new approach to the problem of hypoxia. In the present study, female athymic BALB/c nude mice bearing the cervical carcinoma were untreated or treated with cisplatin to determine whether administration of artificial oxygen carrier (PEG-conjugated Hemoglobin, PEG-Hb) could improve the tumor oxygenation and enhance the anti-tumor efficacy of cisplatin. Pimonidazole staining was employed to detect tumor tissue oxygenation status. We found that the application of a higher dose (0.6 g/kg) PEG-Hb could significantly ameliorate the hypoxic condition in cervical carcinoma xenograft models. Co-administration of PEG-Hb (0.6 g/kg) with cisplatin produced significant tumor growth inhibition and pro-apoptotic and anti-proliferative effects as compared to cisplatin alone. These suggest the evaluated PEG-Hb in this experiment has positive effects on cisplatin or cisplatin-based chemotherapy, and further work to optimize its application is warranted.
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Affiliation(s)
- Minghua Yu
- Institute of Microcirculation, Peking Union Medical College & Chinese Academy of Medical Sciences, 5 Dong Dan San Tiao, Beijing, China
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Yu M, Dai M, Liu Q, Xiu R. Oxygen carriers and cancer chemo- and radiotherapy sensitization: bench to bedside and back. Cancer Treat Rev 2007; 33:757-61. [PMID: 17936507 DOI: 10.1016/j.ctrv.2007.08.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2007] [Accepted: 08/16/2007] [Indexed: 11/29/2022]
Abstract
After over a century of preclinical and clinical development, a number of artificial oxygen carriers based either on perfluorochemicals or hemoglobins are currently in advanced clinical trials for their ability to replace red blood cells and to ensure adequate tissue oxygenation in case of acute anemia or infarction. On the other hand, intravenous administration of perflourocarbone emulsions or hemoglobin solutions were effective in increasing the oxygenation throughout experimental tumors, and fueled by exciting new developments in the field, some products are experimentally and clinically investigated as cancer chemo- and radiosensitizing agents. This review is to provide a first overview of the current status of artificial oxygen carriers as a oxygen therapeutics in cancer chemo- and radiotherapy sensitization.
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Affiliation(s)
- Minghua Yu
- Institute of Microcirculation, Peking Union Medical College and Chinese Academy of Medical Sciences, 5 # Dong Dan San Tiao, Beijing 100005, China
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7
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Manjula BN, Tsai AG, Intaglietta M, Tsai CH, Ho C, Smith PK, Perumalsamy K, Kanika ND, Friedman JM, Acharya SA. Conjugation of Multiple Copies of Polyethylene Glycol to Hemoglobin Facilitated Through Thiolation: Influence on Hemoglobin Structure and Function. Protein J 2005; 24:133-46. [PMID: 16096719 DOI: 10.1007/s10930-005-7837-2] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2005] [Indexed: 11/30/2022]
Abstract
PEGylation induced changes in molecular volume and solution properties of HbA have been implicated as potential modulators of its vasoconstrictive activity. However, our recent studies with PEGylated Hbs carrying two PEG chains/Hb, have demonstrated that the modulation of the vasoconstrictive activity of Hb is not a direct correlate of the molecular volume and solution properties of the PEGylated Hb and implicated a role for the surface charge and/or the pattern of surface decoration of Hb with PEG. HbA has now been modified by thiolation mediated maleimide chemistry based PEGylation that does not alter its surface charge and conjugates multiple copies of PEG5K chains. This protocol has been optimized to generate a PEGylated Hb, (SP-PEG5K)(6)-Hb, that carries approximately six PEG5K chains/Hb - HexaPEGylated Hb. PEGylation increased the O(2) affinity of Hb and desensitized the molecule for the influence of ionic strength, pH, and allosteric effectors, presumably a consequence of the hydrated PEG-shell generated around the protein. The total PEG mass in (SP-PEG5K)(6)-Hb, its molecular volume, O(2) affinity and solution properties are similar to that of another PEGylated Hb, (SP-PEG20K)(2)-Hb, that carries two PEG20K chains/Hb. However, (SP-PEG5K)(6)-Hb exhibited significantly reduced vasoconstriction mediated response than (SP-PEG20K)(2)-Hb. These results demonstrate that the enhanced molecular size and solution properties achieved through the conjugation of multiple copies of small PEG chains to Hb is more effective in decreasing its vasoconstrictive activity than that achieved through the conjugation of a comparable PEG mass using a small number of large PEG chains.
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Affiliation(s)
- Belur N Manjula
- Departments of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
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Carlucci F, Miraldi F, Barretta A, Marullo AGM, Marinello E, Tabucchi A. Preservation of myocardial energy status by bovine hemoglobin solutions during ischemia. Biomed Pharmacother 2002; 56:247-53. [PMID: 12199624 DOI: 10.1016/s0753-3322(02)00197-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Compared to murine and human hemoglobin, bovine hemoglobin has a less exothermic oxygen binding and delivers oxygen even at low temperatures. This property could improve oxygen availability for myocytes during hypothermic arrest of hearts. The aim of this study was to evaluate the advantage of using cardioplegic solutions enriched with bovine hemoglobin when storing rat hearts. Hearts excised from rats after perfusion with different cardioplegic solutions (Celsior, Celsior plus 4% human hemoglobin, Celsior plus 4% and 8% bovine hemoglobin) were compared. Biopsies were obtained from the beating hearts before cardioplegic infusion and during a 48 h period of cold storage. Adenosine triphosphate, its catabolites and markers of oxidative stress were measured as indices of preservation. The results show that bovine hemoglobin-enriched solutions highly improve adenosine triphosphate content, decreasing its catabolites; no significant changes in antioxidant status were evident. The statistically significant difference was evident up to 6 h of storage. Doubling the concentration of bovine hemoglobin produces only slight improvement. Alternative hemoglobins with different properties may improve and prolong heart storage. As bovine hemoglobin delivers oxygen even at low temperatures, it improves energy content and anabolic reactions, without decreasing oxidative stress.
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Affiliation(s)
- F Carlucci
- Institute of Biochemistry and Enzymology, University of Siena, Nuovi Istituti Biologici, Italy.
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Ball J, Venn R, Williams G, Forni L. 22nd International Symposium on Intensive Care and Emergency Medicine, Brussels, Belgium, 19-22 March 2002. Crit Care 2002; 6:264-70. [PMID: 12133191 PMCID: PMC137453 DOI: 10.1186/cc1502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Jonathan Ball
- Department of Anaesthesia & Intensive Care, St George's Hospital Medical School, University of London, UK.
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Riess JG. Oxygen carriers ("blood substitutes")--raison d'etre, chemistry, and some physiology. Chem Rev 2001; 101:2797-920. [PMID: 11749396 DOI: 10.1021/cr970143c] [Citation(s) in RCA: 544] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- J G Riess
- MRI Institute, University of California at San Diego, San Diego, CA 92103, USA.
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11
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Serna DL, Powell LL, Kahwaji C, Wallace WC, West J, Cogert G, Smulowitz P, Steward E, Purdy RE, Milliken JC. Cardiac function after eight hour storage by using polyethylene glycol hemoglobin versus crystalloid perfusion. ASAIO J 2000; 46:547-52. [PMID: 11016504 DOI: 10.1097/00002480-200009000-00007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Efforts to extend myocardial preservation for transplantation by crystalloid perfusion have been limited by edema and compromised function. We hypothesized that hypothermic perfusion preservation with a polyethylene glycol (PEG) conjugated hemoglobin solution may extend preservation times. The purpose of this study was to compare cardiac function after continuous perfusion by using a hypocalcemic, normokalemic crystalloid perfusate with and without the addition of PEG-hemoglobin (Hb). The hearts of 20 anesthetized and ventilated New Zealand White rabbits were harvested after cold cardioplegic arrest. Group I (n = 10) hearts were continuously perfused with a hypocalcemic, normokalemic 3% bovine PEG-Hb solution at 20 degrees C and 30 mm Hg for 8 hours. Group II (n = 10) hearts were continuously perfused with an identical crystalloid solution without PEG-Hb for 8 hours under the same conditions as group I hearts. Cardiac function was measured with a left ventricular force transducer after transfer to a standard crystalloid Langendorff circuit at 37 degrees C and an aortic root pressure of 59 mm Hg. After 8 hours of perfusion preservation, heart rate was similar for groups I and II (p = not significant [NS]). Coronary blood flow after and during preservation was similar between PEG-Hb and crystalloid preserved hearts (p = NS). Left ventricular developed pressure, peak dP/dt, and peak -dP/dt were superior in hearts preserved with PEG-Hb. Percent water of total ventricular weight was 82.0% for group I and 81.6% for group II (p = NS). Continuous perfusion preservation of rabbit hearts for 8 hours with a hypocalcemic normokalemic PEG-Hb based solution at 30 mm Hg and 20 degrees C yields left ventricular function that is superior to perfusion with a similar crystalloid solution without PEG-Hb, despite similar myocardial edema and coronary flow. Extended cardiac perfusion preservation with this PEG-Hb based solution deserves further study, including comparison with traditional cardioplegic preservation solutions.
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Affiliation(s)
- D L Serna
- Department of Pharmacology, UC Irvine Medical Center, Orange, California 92868, USA
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