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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Protein malnutrition impairs bone marrow endothelial cells affecting hematopoiesis

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Author(s):
Hastreiter, Araceli Aparecida [1] ; dos Santos, Guilherme Galvao [1] ; Santos, Ed Wilson Cavalcante [1] ; Makiyama, Edson Naoto [1] ; Borelli, Primavera [1] ; Fock, Ricardo Ambrosio [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Sch Pharmaceut Sci, Dept Clin & Toxicol Anal, Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Clinical Nutrition; v. 39, n. 5, p. 1551-1559, MAY 2020.
Web of Science Citations: 0
Abstract

Background \& aims: Protein malnutrition (PM) affects hematopoiesis leading to bone marrow (BM) hypoplasia and arrests hematopoietic stem cells (HSC) in G(0)/G(1) cell cycle phases, which cause anemia and leukopenia. Hematopoiesis is mainly regulated by BM niches where endothelial cells (EC) present a key regulatory role. Thus, our objective is to evaluate whether PM affects the modulatory capacity of EC on hematopoiesis. Methods: C57BL/6 male mice received for 5 weeks a normal protein diet (12% casein) or a low protein diet (2% casein). MSC were isolated and differentiated in vitro into EC and the synthesis of SCF, Ang-1, CXCL-12, IL-11, TGF-beta and G-CSF were evaluated. The HSC and hematopoietic progenitors were quantified and the EC capacity to modulate the hematopoietic system was also evaluated. Moreover, the ability of PM bone marrow to support hematopoieisis was assessed by proliferation of infused leukemic myelo-monoblasts cells. Results: PM decreases HSC and hematopoietic progenitor pool and promotes cell cycle arrest and a lower proliferation rate of leukemic myelo-monoblasts. PM also committed hematopoietic regulatory characteristics from EC, resulting in the modification of both cell cycle pattern and hematopoietic differentiation. Conclusion: BM microenvironment is compromised in PM, and since PM disturbs EC, it becomes one of the factors responsible for the hematopoietic cell cycle arrest and impairment of HSC differentiation. (C) 2019 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism. All rights reserved. (AU)

FAPESP's process: 18/25813-8 - Effect of protein malnutrition on hematopoiesis. marrow endothelial cell involvement and action of granulocytic colony stimulating factor (G-CSF)
Grantee:Ricardo Ambrósio Fock
Support Opportunities: Regular Research Grants
FAPESP's process: 14/06872-2 - Evaluation of hematopoietic regulatory aspects in protein malnutrition: the role of bone marrow endothelial-like cells derived from mesenchymal stem cells
Grantee:Ricardo Ambrósio Fock
Support Opportunities: Regular Research Grants