[In vitro effect of iron overload on bone marrow cell function by inducing the reactive oxygen species]

Fang Xie1, Ming-feng Zhao, Yu-ming Li

  • 1Tianjin First Central Hospital, Tianjin Medical University, Tianjin 300192, China.

Abstract

Insights

Iron overload increases reactive oxygen species (ROS) and impairs bone marrow cell function, affecting hematopoiesis. This damage can be reversed by removing excess iron and ROS.

Area of Science:

  • Hematology
  • Cell Biology
  • Toxicology

Context:

  • Iron overload is a condition where excess iron accumulates in the body.
  • This accumulation can lead to cellular damage and dysfunction.
  • Bone marrow is critical for hematopoiesis, the process of blood cell formation.

Purpose:

  • To investigate the in vitro effects of iron overload on bone marrow mononuclear cells (BMMNCs).
  • To assess the impact of iron overload on reactive oxygen species (ROS) generation and BMMNC function.
  • To evaluate the potential of deferasirox (DFO) and N-acetyl-L-cysteine (NAC) in mitigating iron overload-induced damage.

Summary:

  • Culturing BMMNCs with ferric citrate (FAC) increased labile iron pool (LIP) in a time- and concentration-dependent manner.
  • Iron overload significantly elevated ROS levels, increased apoptosis, and reduced hematopoietic colony formation and CD34+ cell percentage.
  • Treatment with DFO or NAC effectively reduced ROS and reversed the negative effects on BMMNCs.

Impact:

  • Iron overload adversely affects hematopoiesis through ROS generation.
  • Therapeutic strategies targeting iron chelation and ROS reduction can correct these hematological impairments.
  • Findings may inform treatments for dyshematopoiesis in iron overload conditions.

Related Concept Videos

Factors Affecting Erythropoiesis01:24

Factors Affecting Erythropoiesis

The cardiovascular system regulates the number of erythrocytes in the bloodstream to ensure optimal oxygen transport. It also prevents over-proliferation of these cells, which helps to maintain blood viscosity and flow rate.
Several factors influence the erythrocyte production rate, with tissue oxygen level being among the most critical. Intense exercise or high altitudes can cause tissue hypoxia, which triggers the kidneys to release more erythropoietin (EPO) into the bloodstream.
EPO then...
The Periodic Table and Organismal Elements00:57

The Periodic Table and Organismal Elements

OverviewElements are the smallest units of matter that cannot be broken down further by chemical processes. There are 118 known elements, but not all of these are naturally-occurring, and fewer still are essential for life. Living matter is composed primarily of carbon, nitrogen, hydrogen, and oxygen, with smaller amounts of other elements like calcium, phosphorus, potassium, and sulfur. Other elements are also necessary for life but only in trace amounts.The Periodic Table Provides Information...
Erythropoiesis01:14

Erythropoiesis

Red blood cells  (RBCs) transport oxygen to all body tissues. These cells survive only for 120 days and then need to be replenished. Erythropoiesis is the process of RBC production. In healthy individuals, erythropoiesis ensures all tissues are amply supplied with oxygen. In addition, blood loss due to injury leads to a drop in the physiological oxygen level that will cause erythropoiesis. Any defect in erythropoiesis leads to several physiological disorders, including thalassemia, anemia, and...
Necrosis01:16

Necrosis

Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become anucleated and die, but their...