Volume 102, Issue 2 pp. 523-531
Original Article

Electrospun nanofibers as a bioadhesive platform for capturing adherent leukemia cells

Xue Cao

Xue Cao

Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore

Search for more papers by this author
Kenneth Kwek

Kenneth Kwek

Department of Maternal Fetal Medicine, KK Women's and Children's Hospital, Singapore

Search for more papers by this author
Jerry K. Y. Chan

Jerry K. Y. Chan

Department of Reproductive Medicine, KK Women's and Children's Hospital, Singapore

Cancer and Stem Cell Biology Program, Duke-NUS Graduate Medical School, Singapore

Experimental Fetal Medicine Group, Yong Loo Lin School of Medicine, National University of Singapore, Singapore

Search for more papers by this author
Casey K. H. Chan

Casey K. H. Chan

Department of Bioengineering, Faculty of Engineering, National University of Singapore, Singapore

Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore

Search for more papers by this author
Mayasari Lim

Corresponding Author

Mayasari Lim

Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore

Correspondence to: M. Lim; e-mail: [email protected]Search for more papers by this author
First published: 27 March 2013
Citations: 4

Abstract

This study investigated the adhesive behaviors of normal and abnormal hematopoietic cells on nanotopographical materials. Previously, electrospun nanofiber scaffolds (NFSs) were used to capture and expand hematopoietic stem cells in vitro; here, we demonstrate that NFS could also serve as a useful bioadhesive platform for capturing functionally adherent leukemia cells. Collagen-blended poly(d,l-lactide-co-glycolide) NFS enabled more rapid and efficient capture of K562 leukemia cells than tissue culture polystyrene surfaces with up to 70% improved adhesion and shorter time. Cellular extensions, stronger adhesion, and enhanced cell–cell interactions were observed in K562 cells captured on NFS. While NFS promoted hematopoietic progenitor cell proliferation, it inhibited leukemia cell proliferation and affected cell cycle status by shifting more cells toward the G0/G1 phase. The expression of α-integrins was equally high in both captured and uncaptured leukemia cell populations demonstrating no relation to its adhesive nature. Hematopoietic morphological signatures of NFS captured cells presented no impact on cell differentiation. We conclude that electrospun NFS serves as an excellent platform not only for capturing functionally adherent leukemia cells but also for studying the impact of niche-like structure in the nanoscale. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 102A: 523–531, 2014.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.