Related Experiment Video
Updated: Jun 10, 2026
09:18
Quantifying Tissue-Specific Proteostatic Decline in Caenorhabditis elegans
Published on: September 7, 2021
Cellular stress and protein misfolding during aging
Methods in Molecular Biology (Clifton, N.J.)
|August 12, 2010
Summary
Cellular stress causes protein misfolding, leading to aging and disease. Understanding these mechanisms can help develop interventions for healthy aging and treat protein conformational diseases.
Area of Science:
- Cellular Biology
- Molecular Biology
- Aging Research
Background:
- Cells face constant intrinsic and extrinsic stressors, leading to molecular damage, aging, and death.
- Protein misfolding is a key consequence and contributor to cellular stress.
- Age-related decline in protein quality control systems results in misfolded protein accumulation and conformational diseases.
Purpose of the Study:
- To elucidate the molecular mechanisms underlying protein misfolding.
- To explore the role of chaperones and degradation pathways in preventing protein misfolding.
- To investigate the complex, dynamic, and interdependent mechanisms of protein misfolding, including its dual toxic and protective roles.
Main Methods:
- Investigating molecular mechanisms of protein misfolding.
- Analyzing the function of chaperones in protein quality control.
- Examining cellular degradation pathways involved in protein homeostasis.
- Studying proteodynamics to understand protein conformational diseases.
Main Results:
- Protein misfolding is intricately linked to cellular stress and aging.
- Misfolded proteins can exhibit both detrimental and beneficial effects.
- Chaperones and degradation pathways play crucial roles in managing protein misfolding.
- Accumulation of misfolded proteins is a hallmark of conformational diseases.
Conclusions:
- Understanding protein misfolding mechanisms is vital for addressing cellular stress and aging.
- Targeting proteodynamics offers potential for preventing and treating protein conformational diseases.
- Interventional strategies informed by proteodynamics can promote healthy aging.
Related Concept Videos
01:26Aging
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...
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...
03:03Amyloid Fibrils
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining, normally used to...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining, normally used to...
03:03Amyloid Fibrils
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining, normally used to...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining, normally used to...
01:19The Effect of Aging on Tissues
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
03:00Molecular Chaperones and Protein Folding
The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
The...
03:00Molecular Chaperones and Protein Folding
The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
The...