Volume 31, Issue 5 pp. 1122-1126
RESEARCH ARTICLE

Lyophilized hemoglobin-albumin cluster with disaccharides: Long-term storable powder of artificial O2-carrier

Ryosuke Funaki

Ryosuke Funaki

Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, Tokyo, Japan

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Hitomi Iwasaki

Hitomi Iwasaki

Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, Tokyo, Japan

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Tomonori Kashima

Tomonori Kashima

Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, Tokyo, Japan

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Teruyuki Komatsu

Corresponding Author

Teruyuki Komatsu

Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, Tokyo, Japan

Correspondence

Prof Teruyuki Komatsu, Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan.

Email: [email protected]

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First published: 03 February 2020
Citations: 1

Funding information: Chuo University; Japan Society for the Promotion of Science, Grant/Award Number: 18K19007

Abstract

Core-shell protein cluster comprising a hemoglobin (Hb) in the center and human serum albumins (HSA) at the exterior, Hb-HSA 3 cluster, is an artificial O2-carrier designed for use as a red blood cell (RBC) substitute. Lyophilization of the Hb-HSA 3 cluster solution ([Hb unit] = 5 g/dL) with sucrose and trehalose yielded stable pink powder, which can be stored for 2 years at 4°C. Addition of pure water to the powder regenerated the homogeneous solution. The O2-binding properties and oxyHb rate have been unaltered during the storage period. Infrared spectroscopic studies revealed that the hydrogen bond between protein and sugar stabilizes three-dimensional structure of the cluster.

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