Proinsulin Promotes Self-Renewal of a Hematopoietic Progenitor Cell Line In Vitro.

Abstract:

:The objective of this study was to assess the effects of exogenously expressed proinsulin on the biological characters of a hematopoietic stem cell line (HSC) and erythroid myeloid lymphoid (EML) cells and explore new strategies for cell therapy for type I diabetes. EML cells were transduced with lentivirus particles carrying the human proinsulin (proINS) gene. The positive transduced cells were selected based on green fluorescence protein (GFP) positivity and puromycin resistance. Overexpression of proINS was confirmed via real-time PCR and Western blotting. The functional activity of the human proINS secreted by EML cells was elucidated by analyzing the activation of insulin receptor and its downstream signaling. Pro-INS + EML cells were able to prime the phosphorylation of insulin receptor as well as induce the expression of downstream genes of insulin receptor. Furthermore, Wnt3a can significantly promote self-renewal of Pro-INS + EML cells. However, we did not observe significant changes in the proliferation and differentiation of INS + EML cells, compared to the control EML cells. Our results might be useful for developing a new therapy for diabetes mellitus.

journal_name

J Diabetes Res

authors

Han Y,Liu T,Zou Y,Ji L,Li Y,Li J,Wang J,Chen G,Chen J,Chen L,Ye Z

doi

10.1155/2017/5649191

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

5649191

eissn

2314-6745

issn

2314-6753

journal_volume

2017

pub_type

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