Sequential administration of delta-tocotrienol ameliorates radiation-induced myelosuppression in mice and non-human primates through inducing G-CSF production

Copyright © 2024 Elsevier Inc. All rights reserved..

To date only four recombinant growth factors, including Filgrastim (rhG-CSF), have been approved by FDA as radiomitigators to ameliorate hematopoietic acute radiation syndrome (H-ARS). These approved agents are not stable under room-temperature, needing to be stored at 2-8 °C, and would not be feasible in a mass casualty scenario where rapid and cost-effective intervention is crucial. Delta-tocotrienol (δ-T3H), the most potent G-CSF-inducing agent among vitamin E isoforms, exhibited efficiency and selectivity on G-CSF production in comparison with TLR and STING agonists in mice. Five-dose δ-T3H was utilized as the optimal therapeutic regimen due to long-term G-CSF production and the best peripheral blood (PB) recovery of irradiated mice. Comparable with rhG-CSF, sequential administration of δ-T3H post-irradiation improved hematologic recovery and accelerated the regeneration of hematopoietic stem cells (HSCs) and hematopoietic progenitor cells (HPCs) in the bone marrow (BM) and spleen of 6.5Gy irradiated mice; and consistently enhanced repopulation of BM-HSCs. In 4.0Gy irradiated nonhuman primates, δ-T3H exhibited comparable efficacy as rhG-CSF to promote PB recovery and colony-formation of BM-HPCs. Altogether, we demonstrated that sequential administration of delta-tocotrienol ameliorates radiation-induced myelosuppression in mice and non-human primates through inducing G-CSF production, indicated δ-T3H as a promising radiomitigator for the management of H-ARS, particularly in a mass casualty scenario.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:704

Enthalten in:

Biochemical and biophysical research communications - 704(2024) vom: 16. März, Seite 149661

Sprache:

Englisch

Beteiligte Personen:

Wang, Shaozheng [VerfasserIn]
Zuo, Zongchao [VerfasserIn]
Ouyang, Zhangyi [VerfasserIn]
Liu, Xinyu [VerfasserIn]
Wang, Junke [VerfasserIn]
Shan, Yajun [VerfasserIn]
Meng, Ruoxi [VerfasserIn]
Zhao, Zhenhu [VerfasserIn]
Liu, Xiaolan [VerfasserIn]
Liu, Xiaoyan [VerfasserIn]
Jin, Yiguang [VerfasserIn]
Li, Zhongtang [VerfasserIn]
Zhang, Hong [VerfasserIn]
Wang, Limei [VerfasserIn]
Cong, Yuwen [VerfasserIn]

Links:

Volltext

Themen:

1406-18-4
143011-72-7
1SRB74OWSI
Delta-tocotrienol
Granulocyte Colony-Stimulating Factor
Granulocyte colony-stimulating factor
Hematopoietic acute radiation syndrome
Journal Article
Nonhuman primates
Radiation
Radiomitigator
Recombinant Proteins
Tocotrienol, delta
Vitamin E

Anmerkungen:

Date Completed 13.03.2024

Date Revised 29.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.bbrc.2024.149661

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369072553