Dual role of MIF in aging and cellular senescence

Abdullah Altulea1, Jamil Nehme1, Marco Demaria1

  • 1European Research Institute for the Biology of Ageing (ERIBA), University Medical Center Groningen (UMCG), University of Groningen (RUG), Groningen, the Netherlands.

Insights

Macrophage migration inhibitory factor (MIF) is a key cytokine in immunity and aging. Its dual roles in inflammation and cell survival present a complex therapeutic target for age-related diseases.

Area of Science:

  • Immunology
  • Cellular Biology
  • Pathology

Background:

  • Macrophage migration inhibitory factor (MIF) is a pleiotropic cytokine involved in innate immunity, cellular senescence, and age-related diseases.
  • MIF exhibits unique secretion mechanisms, compartment-specific signaling, and redox-dependent conformational states.

Purpose of the Study:

  • To review the multifaceted roles of MIF in various biological contexts and age-related pathologies.
  • To elucidate the distinct functions of extracellular and intracellular MIF.
  • To highlight oxidized MIF as a potential biomarker in aging.

Main Methods:

  • Systematic review of evidence from cardiovascular, neurodegenerative, musculoskeletal, and pulmonary disease studies.
  • Analysis of MIF's signaling pathways, including CD74, CXCR2/4, NF-κB, and p53 interactions.
  • Examination of MIF's redox-dependent conformational states.

Main Results:

  • Extracellular MIF promotes chronic inflammation via CD74, CXCR2/4, and NF-κB.
  • Intracellular MIF supports proliferation, DNA repair, and autophagy by antagonizing p53.
  • Oxidized MIF is identified as a relevant marker in age-related diseases.
  • MIF signaling demonstrates context-dependent protective or deleterious effects across different diseases.

Conclusions:

  • MIF's complex and context-dependent functions make it a challenging therapeutic target for age-related diseases.
  • Understanding MIF's distinct signaling pathways and conformational states is crucial for therapeutic development.

Related Concept Videos

Mitochondria01:37

Mitochondria

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,...
21.5K
Replicative Cell Senescence02:15

Replicative Cell Senescence

Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds...
4.6K
Replicative Cell Senescence02:15

Replicative Cell Senescence

3.5K
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
5.4K
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a...
6.4K
Aging01:26

Aging

Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
1.0K