Stress signaling between organs in metazoa

Area of Science:

• Cellular Biology
• Stress Response Mechanisms
• Inter-organ Communication

Background:

• Organisms possess sophisticated mechanisms to maintain cellular integrity (genome, proteome, metabolome) against environmental challenges.
• Cellular stress triggers a complex prosurvival signaling network involving genes, proteins, and noncoding RNAs.
• Stress responses can be autonomous within a cell or nonautonomous, involving inter-organ communication.

Purpose of the Study:

• To review the mechanisms of inter-organ communication in stress adaptation.
• To highlight how one organ's stress response can influence another's.
• To provide a comprehensive overview of organism-wide stress resilience.

Main Methods:

• Literature review of studies in model organisms.
• Analysis of signaling pathways involved in cellular stress.
• Examination of secreted factors mediating inter-organ communication.

Main Results:

• Cellular stress activates a network of prosurvival genes and proteins.
• Stress response activation occurs through transcriptional, post-transcriptional, and post-translational modifications.
• Stressed tissues release signaling molecules that induce adaptive responses in distant organs.

Conclusions:

• Inter-organ communication is a critical component of organism-wide stress adaptation.
• Understanding these nonautonomous responses can reveal novel therapeutic targets for stress-related diseases.
• This review consolidates current knowledge on how systemic adaptation to stress is achieved through coordinated organ responses.