From hemoglobin allostery to hemoglobin-based oxygen carriers

S Faggiano, L Ronda, S Bruno, S Abbruzzetti… - Molecular Aspects of …, 2022 - Elsevier
Hemoglobin (Hb) plays its vital role through structural and functional properties
evolutionarily optimized to work within red blood cells, ie, the tetrameric assembly, well …

How Nitric Oxide Hindered the Search for Hemoglobin-Based Oxygen Carriers as Human Blood Substitutes

M Samaja, A Malavalli, KD Vandegriff - International Journal of Molecular …, 2023 - mdpi.com
The search for a clinically affordable substitute of human blood for transfusion is still an
unmet need of modern society. More than 50 years of research on acellular hemoglobin …

Comprehensive biochemical and biophysical characterization of hemoglobin-based oxygen carrier therapeutics: all HBOCs are not created equally

F Meng, T Kassa, S Jana, F Wood, X Zhang… - Bioconjugate …, 2018 - ACS Publications
The development of hemoglobin (Hb)-based oxygen carriers (HBOCs) has been hampered
because of safety concerns in humans. Chemical and/or genetic modifications of the Hb …

The interplay between molten globules and heme disassociation defines human hemoglobin disassembly

PP Samuel, MA White, WC Ou, DA Case, GN Phillips… - Biophysical journal, 2020 - cell.com
Hemoglobin functions as a tetrameric oxygen transport protein, with each subunit containing
a heme cofactor. Its denaturation, either in vivo or in vitro, involves autoxidation to …

[HTML][HTML] Site-directed mutagenesis of cysteine residues alters oxidative stability of fetal hemoglobin

K Kettisen, MB Strader, F Wood, AI Alayash, L Bülow - Redox Biology, 2018 - Elsevier
Redox active cysteine residues including βCys93 are part of hemoglobin's “oxidation
hotspot”. Irreversible oxidation of βCys93 ultimately leads to the collapse of the hemoglobin …

Evolution of an extreme hemoglobin phenotype contributed to the sub-Arctic specialization of extinct Steller's sea cows

AV Signore, PR Morrison, CJ Brauner, A Fago… - Elife, 2023 - elifesciences.org
The extinct Steller's sea cow (Hydrodamalis gigas;† 1768) was a whale-sized marine
mammal that manifested profound morphological specializations to exploit the harsh coastal …

A novel single sensor hemoglobin domain from the thermophilic cyanobacteria Thermosynechococcus elongatus BP-1 exhibits higher pH but lower thermal stability …

S Mathur, SK Yadav, K Yadav, S Bhatt… - International Journal of …, 2023 - Elsevier
Thermosynechococcus elongatus-BP1 belongs to the class of photoautotrophic
cyanobacterial organisms. The presence of chlorophyll a, carotenoids, and phycocyanobilin …

The providence mutation (βK82D) in human hemoglobin substantially reduces βCysteine 93 oxidation and oxidative stress in endothelial cells

S Jana, MB Strader, AI Alayash - International Journal of Molecular …, 2020 - mdpi.com
The highly toxic oxidative transformation of hemoglobin (Hb) to the ferryl state (HbFe4+) is
known to occur in both in vitro and in vivo settings. We recently constructed oxidatively …

Oxidized mutant human hemoglobins S and E induce oxidative stress and bioenergetic dysfunction in human pulmonary endothelial cells

S Jana, F Meng, RE Hirsch, JM Friedman… - Frontiers in …, 2017 - frontiersin.org
Cell free hemoglobin (Hb), becomes oxidized in the circulation during hemolytic episodes in
sickle cell disease (SCD) or thalassemia and may potentially cause major complications that …

Substitutions in the β subunits of sickle-cell hemoglobin improve oxidative stability and increase the delay time of sickle-cell fiber formation

F Meng, T Kassa, MB Strader, J Soman… - Journal of Biological …, 2019 - ASBMB
After reacting with hydrogen peroxide (H 2 O 2), sickle-cell hemoglobin (HbS, βE6V)
remains longer in a highly oxidizing ferryl form (HbFe 4+= O) and induces irreversible …