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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,...
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In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
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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.
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Related Experiment Video

Updated: Oct 14, 2025

Author Spotlight: Tracing the Ferroptotic Signatures and Cell Death Dynamics in Medulloblastoma for Advanced Therapeutics
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Embryonal erythropoiesis and aging exploit ferroptosis.

Hao Zheng1, Li Jiang1, Tsuyoshi Tsuduki2

  • 1Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, 466-8550, Japan.

Redox Biology
|November 4, 2021
PubMed
Summary

Ferroptosis, a cell death form, is newly found in normal physiological processes like aging and red blood cell development. This discovery opens new avenues for understanding cell death mechanisms and related diseases.

Keywords:
4-Hydroxy-2-nonenalAgingErythropoiesisFerroptosisIron

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Area of Science:

  • Cell Biology
  • Biochemistry
  • Physiology

Background:

  • Ferroptosis is a regulated cell death marked by iron-dependent lipid peroxidation.
  • Its physiological roles remain unclear due to methodological limitations.
  • Previous research linked ferroptosis to diseases like cancer and neurodegeneration.

Purpose of the Study:

  • To develop and validate a robust method for detecting ferroptosis in tissues.
  • To investigate the physiological roles of ferroptosis during development and aging.
  • To explore the link between ferroptosis and red blood cell maturation.

Main Methods:

  • Development of a HNEJ-1 mouse monoclonal antibody for detecting 4-hydroxy-2-nonenal (HNE)-modified proteins.
  • Immunohistochemistry combined with morphological analysis to locate ferroptosis.
  • Analysis of ferroptosis in various models, including chemical induction, genetic knockout, and injury models.
  • Comprehensive study of ferroptosis in Fischer-344 rats across different life stages.
  • Investigation of ferroptosis in aging SAMP8 mice under different dietary conditions.
  • Assessment of ferroptosis inhibitor (liproxstatin-1) effects on erythropoiesis.

Main Results:

  • The HNEJ-1 antibody reliably detects ferroptosis in various experimental models.
  • Age-dependent ferroptosis was observed in multiple organs of Fischer-344 rats, correlating with iron accumulation.
  • Dietary factors influenced epidermal ferroptosis in aging mice.
  • Ferroptosis was identified in nucleated erythrocytes during embryonic development, disappearing in enucleated erythrocytes.
  • Liproxstatin-1 administration delayed erythrocyte enucleation, suggesting ferroptosis's role in this process.

Conclusions:

  • Ferroptosis is implicated in physiological processes, including embryonic erythropoiesis and aging.
  • The study provides the first evidence of ferroptosis's involvement in normal physiological functions.
  • Ferroptosis may represent an evolutionarily conserved mechanism and contribute to aging-related decline.