Abstract:
:Several studies have shown the important actions of cytokine leptin that regulates food intake and energy expenditure. Additionally, the ability to modulate hematopoiesis has also been demonstrated. Previous reports have shown that some synthetic sequences of leptin molecules can activate leptin receptor. Herein, decapeptides encompassing amino acids from positions 98 to 122 of the leptin molecule were constructed to evaluate their effects on hematopoiesis. Among them, the synthetic peptide Lep(110-119)-NH2 (LEP F) was the only peptide that possessed the ability to increase the percentage of hematopoietic stem cells (HSC). Moreover, LEP F also produced an increase of granulocyte/macrophage colony-forming units and activated leptin receptor. Furthermore, LEP F also improves the grafting of HSC in bone marrow, but did not accelerate the recovery of bone marrow after ablation with 5-fluorouracil. These results show that LEP F is a positive modulator of the in vivo expansion of HSC and could be useful in bone marrow transplantation.
journal_name
J Cell Biochemjournal_title
Journal of cellular biochemistryauthors
Dias CC,Nogueira-Pedro A,Tokuyama PY,Martins MN,Segreto HR,Buri MV,Miranda A,Paredes-Gamero EJdoi
10.1002/jcb.25090subject
Has Abstractpub_date
2015-07-01 00:00:00pages
1334-40issue
7eissn
0730-2312issn
1097-4644journal_volume
116pub_type
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