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Related Concept Videos

Diversity in Cell Signaling Responses01:22

Diversity in Cell Signaling Responses

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The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
Graded and Abrupt Responses
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Interactions Between Signaling Pathways01:19

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Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
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Overview of Cell Signaling01:23

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Despite the protective membrane that separates a cell from the environment, cells need the ability to detect and respond to environmental changes. Additionally, cells often need to communicate with one another. Unicellular and multicellular organisms use a variety of cell signaling mechanisms to communicate with the environment.
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Protein Networks02:26

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An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
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Signal Transduction: Overview01:26

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Cells respond to many types of information, often through receptor proteins positioned on the membrane. They respond to chemical signals, such as hormones, neurotransmitters, and other signaling molecules, initiating a series of molecular reactions to produce an appropriate response. This is called signal transduction. Cells also coordinate different responses elicited by the same signaling molecule via mediators, allowing molecular cross-talk.
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Quantification of Information Encoded by Gene Expression Levels During Lifespan Modulation Under Broad-range Dietary Restriction in C. elegans
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Signaling Networks Determining Life Span.

Celine E Riera1,2,3, Carsten Merkwirth1,2,3, C Daniel De Magalhaes Filho2,4

  • 1Department of Molecular and Cell Biology, University of California, Berkeley, California 94720;

Annual Review of Biochemistry
|June 14, 2016
PubMed
Summary
This summary is machine-generated.

Aging involves the breakdown of cellular balance, leading to damage and disease. Understanding conserved biological processes offers therapeutic strategies to extend healthy life span and prevent age-related illnesses.

Keywords:
DNA damageepigenetic regulationinflammationinsulin-like signalingmammalian agingmitochondrial healthnutrient sensingoxidative stressproteostasistelomere shortening

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Area of Science:

  • Molecular biology
  • Biochemistry
  • Gerontology

Background:

  • Organismal health relies on molecular and biochemical networks maintaining homeostasis.
  • Aging causes failure in homeostatic balance, leading to damage, tissue decline, and disease susceptibility.
  • Endogenous and environmental stresses accelerate aging.

Purpose of the Study:

  • To provide a comprehensive overview of evolutionarily conserved biological processes regulating aging.
  • To discuss the link between aging processes and disease prevention.
  • To explore therapeutic strategies for age-associated diseases based on aging mechanisms.

Main Methods:

  • Review of evolutionarily conserved biological processes.
  • Analysis of molecular and cellular signaling events in aging.
  • Literature synthesis on aging, disease, and lifespan extension.

Main Results:

  • Identified key molecular and cellular pathways controlling the aging rate.
  • Established connections between aging processes and the development of age-related diseases.
  • Highlighted the potential for interventions targeting these pathways.

Conclusions:

  • Understanding aging mechanisms is crucial for developing strategies against age-associated diseases.
  • Targeting conserved biological processes can prevent disease and extend healthy lifespan.
  • Interventions hold promise for improving healthspan and longevity.