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Related Concept Videos

Phosphorylation01:02

Phosphorylation

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The addition or removal of phosphate groups from proteins is the most common chemical modification that regulates cellular processes. These modifications can affect the structure, activity, stability, and localization of proteins within cells as well as their interactions with other proteins.
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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Protein Kinases and Phosphatases02:54

Protein Kinases and Phosphatases

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Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
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Molecular Factors Affecting Cell Division01:27

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Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
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Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
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Updated: Sep 30, 2025

Induction and Validation of Cellular Senescence in Primary Human Cells
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Induction and Validation of Cellular Senescence in Primary Human Cells

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Phosphate and Cellular Senescence.

Ming Chang Hu1,2, Orson W Moe3,4,5

  • 1Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, TX, USA. ming-chang.hu@utsouthwestern.edu.

Advances in Experimental Medicine and Biology
|March 15, 2022
PubMed
Summary
This summary is machine-generated.

High phosphate levels accelerate aging and age-related diseases by inducing cellular senescence. Strategies like dietary phosphate restriction and Klotho supplementation may offer therapeutic benefits.

Keywords:
Age-associated diseaseAgingCellular senescenceFibrosisKlothoPhosphatePhosphorusPhosphotoxicityPlasminogen activator inhibitor-1p16p21

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A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence
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Techniques to Induce and Quantify Cellular Senescence
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Techniques to Induce and Quantify Cellular Senescence
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Techniques to Induce and Quantify Cellular Senescence

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Area of Science:

  • Gerontology
  • Cell Biology
  • Biochemistry

Background:

  • Cellular senescence, a state of irreversible cell growth arrest, is increasingly recognized as a key factor in aging and associated diseases.
  • High phosphate levels and low Klotho are linked to age-related organ degeneration.
  • Phosphate's role in cellular senescence is supported by evidence, implicating it in aging, cancer, and various chronic diseases.

Purpose of the Study:

  • To investigate the causal link between high phosphate and cellular senescence.
  • To explore the mechanisms by which phosphate induces senescence, including Klotho and plasminogen activator inhibitor-1.
  • To identify potential therapeutic strategies for mitigating phosphate-induced senescence and age-related disorders.

Main Methods:

  • Review of existing evidence on phosphate's impact on cellular senescence.
  • Analysis of molecular pathways involved in phosphate-induced senescence (e.g., Klotho downregulation, PAI-1 upregulation).
  • Evaluation of interventions such as dietary phosphate restriction, Klotho supplementation, and senolytic agents.

Main Results:

  • Phosphate directly induces cellular senescence via phosphotoxicity.
  • Phosphate indirectly promotes senescence by downregulating Klotho and upregulating plasminogen activator inhibitor-1 (PAI-1).
  • Dietary phosphate restriction and blocking intestinal phosphate absorption can suppress cellular senescence.

Conclusions:

  • High phosphate is a significant contributor to cellular senescence and age-associated diseases.
  • Therapeutic strategies targeting phosphate levels, Klotho protein, or senescent cells show promise for combating aging and related disorders.
  • Interventions aimed at reducing phosphate burden or enhancing Klotho function could ameliorate phosphate-induced cellular senescence and associated pathologies.