Study of Bernard–Soulier Syndrome Megakaryocytes and Platelets Using Patient-Derived Induced Pluripotent Stem Cells

Autor: Nipan Israsena, Ponlapat Rojnuckarin, Supang Maneesri Le Grand, Praewphan Ingrungruanglert, Darintr Sosothikul, Ponthip Mekchay, Wilawan Ji-au, Kanya Suphapeetiporn
Rok vydání: 2019
Předmět:
Zdroj: Thrombosis and Haemostasis. 119:1461-1470
ISSN: 2567-689X
0340-6245
DOI: 10.1055/s-0039-1693409
Popis: Bernard–Soulier syndrome (BSS) is a hereditary macrothrombocytopenia caused by defects in the glycoprotein (GP) Ib-IX-V complex. The mechanism of giant platelet formation remains undefined. Currently, megakaryocytes (MKs) can be generated from induced pluripotent stem cells (iPSCs) to study platelet production under pharmacological or genetic manipulations. Here, we generated iPSC lines from two BSS patients with mutations in different genes (GP1BA and GP1BB: termed BSS-A and BSS-B, respectively). The iPSC-derived MKs and platelets were examined under electron microscopy and stained by immunofluorescence to observe proplatelet formation and measure platelet diameters which were defined by circumferential tubulin. BSS-iPSCs produced abnormal proplatelets with thick shafts and tips. In addition, compared with the normal iPSCs, the diameters were larger in platelets derived from BSS-A and BSS-B with the means ± standard deviations of 4.34 ± 0.043 and 3.88 ± 0.045 µm, respectively (wild-type iPSCs 2.61 ± 0.025 µm, p
Databáze: OpenAIRE