Abstract
Hemerythrin is proposed as an alternative to hemoglobin-based blood substitutes. In contrast to hemoglobin, hemerythrin exhibits negligible reactivity towards oxidative and nitrosative stress agents (peroxide, nitric oxide, nitrite). Protocols for attachment of polyethylene glycol and glutaraldehyde cross-linking of Hr are described. These derivatizations appear to have favorable effects on O2 affinity and autoxidation rates for use in blood substitutes. Based on lessons learned from hemoglobin-based blood substitutes, these derivatizations should also help limit extravasation and antigenicity of a hemerythrin-based blood substitute.
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Abbreviations
- Hr:
-
Hemerythrin
- Hb:
-
Hemoglobin
- LB/amp:
-
Luria–Bertani/ampicillin
- OD600:
-
Optical density at 600 nm
- SDS–PAGE:
-
Sodium dodecyl sulfate–polyacrylamide gel electrophoresis
- PBS:
-
Phosphate buffer saline
- PEG:
-
Polyethelene glycol
- MS:
-
Methyl-PEG4-N-hydroxysuccinimide ester
- TMS:
-
(Methyl-PEG12)3-PEG4-N-hydroxysuccinimide ester
- DMSO:
-
Dimethylsulfoxide
- GL:
-
Gluteraldehyde
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Acknowledgments
We thank Prof. C.C. Cooper (University of Essex, UK) for helpful discussions. Funding from the Romanian government (project PNII 565/2007) and NIH grant GM040388 (D.M.K.) is gratefully acknowledged.
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Mot, A.C., Roman, A., Lupan, I. et al. Towards the Development of Hemerythrin-Based Blood Substitutes. Protein J 29, 387–393 (2010). https://doi.org/10.1007/s10930-010-9264-2
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DOI: https://doi.org/10.1007/s10930-010-9264-2