ER Stress Responses: An Emerging Modulator for Innate Immunity

Area of Science:

• Cell Biology
• Immunology
• Metabolic Diseases

Background:

• The endoplasmic reticulum (ER) is essential for calcium storage and protein translation, maintaining cellular homeostasis.
• ER stress sensor pathways (IRE1/sXBP1, PERK/EIf2, ATF6) are critical for cellular health; their genetic depletion causes lethality.
• Dysregulated ER stress is linked to diseases like atherosclerosis, diabetes, obesity, and cancer.

Purpose of the Study:

• To review the causes and consequences of ER stress activation in myeloid cells.
• To highlight the interplay between ER stress, innate immunity, and metabolic environments.

Main Methods:

• Literature review focusing on ER stress in myeloid cells and its disease implications.
• Analysis of the crosstalk between ER, innate signaling, and metabolic factors.

Main Results:

• ER stress is activated in myeloid cells within metabolically stressed disease environments.
• ER stress activation modulates myeloid cell phenotype and function.
• ER stress in myeloid cells influences disease pathogenesis.

Conclusions:

• ER stress is a key regulator of myeloid cell function in disease.
• Understanding ER-innate immunity-metabolism crosstalk is crucial for therapeutic strategies.