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Related Concept Videos

Restriction Enzymes01:11

Restriction Enzymes

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Restriction enzymes are bacterial enzymes used to cut DNA in a sequence-specific manner. To cleave DNA, they bind to specific palindromic sequences called restriction sites. Such palindromic DNA sequences or inverted repeats are commonly found in regions of functional significance, such as the origin of replication, gene operator sites, and regions containing transcription termination signals.
The host bacteria protect their own genomic DNA from these enzymes by methylating these sites. Some...
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Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

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Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
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Hepatic Drug Clearance: Restrictive and Nonrestrictive Clearance01:09

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Hepatic clearance refers to the volume of blood cleared of a drug by the liver per unit of time. It plays a crucial role in drug metabolism and elimination. While hepatic clearance is commonly estimated by subtracting renal clearance from total body clearance, other pathways, such as pulmonary or biliary clearance, may also contribute. However, these pathways are generally less significant than hepatic and renal clearance.
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Protein-protein Interfaces02:04

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Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
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Protein and Protein Structure02:15

Protein and Protein Structure

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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
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Cancer02:18

Cancer

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Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
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Related Experiment Video

Updated: Feb 12, 2026

Two Methods of Heterokaryon Formation to Discover HCV Restriction Factors
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Two Methods of Heterokaryon Formation to Discover HCV Restriction Factors

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Protein restriction and cancer.

Jie Yin1, Wenkai Ren2, Xingguo Huang3

  • 1Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences; Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture; Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, PR China; University of Chinese Academy of Sciences, Beijing, PR China.

Biochimica Et Biophysica Acta. Reviews on Cancer
|March 30, 2018
PubMed
Summary

Reducing protein intake, without causing malnutrition, can prevent diseases and potentially lower cancer risk. This dietary approach shows promise in both preventing and treating various cancers.

Keywords:
Amino acidAutophagyCancerFGF21IGF-1Protein restrictionmTOR

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Area of Science:

  • Nutritional Science
  • Oncology
  • Molecular Biology

Background:

  • Protein restriction without malnutrition is a proven strategy for disease prevention and healthspan promotion across species.
  • Emerging research links low-protein diets to reduced cancer incidence and mortality in humans.
  • Studies in murine models demonstrate that protein restriction inhibits tumor growth through the mTOR signaling pathway.

Purpose of the Study:

  • To explore the mechanisms and potential benefits of protein restriction in cancer prevention and treatment.
  • To evaluate the role of signaling pathways and metabolic programs in protein restriction-mediated cancer prevention.

Main Methods:

  • Review of existing literature on protein restriction and cancer.
  • Analysis of molecular mechanisms including mTOR signaling, IGF-1, amino acid metabolism, FGF21, and autophagy.
  • Examination of data from yeast to human studies and murine cancer models.

Main Results:

  • Protein restriction effectively prevents diseases and promotes healthspan.
  • Low protein diets are associated with decreased cancer incidence and mortality.
  • In murine models, protein restriction inhibits tumor growth via the mTOR pathway, with potential roles for IGF-1, amino acid metabolism, FGF21, and autophagy.

Conclusions:

  • Dietary protein reduction is a promising strategy for cancer prevention and treatment.
  • The mechanisms involve complex signaling pathways and metabolic adaptations.
  • Protein restriction holds potential for widespread adoption as an effective cancer intervention.