The roles of ASK family proteins in stress responses and diseases

Kazuki Hattori1, Isao Naguro, Christopher Runchel

  • 1Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. ichijo@mol.f.u-tokyo.ac.jp.

Insights

Apoptosis signal-regulating kinase 1 (ASK1) is a key stress-activated kinase. Recent findings highlight ASK family proteins

Area of Science:

  • Cell biology
  • Molecular biology
  • Biochemistry

Background:

  • Apoptosis signal-regulating kinase 1 (ASK1) is a kinase in the MAPKKK family.
  • ASK1 activates downstream kinases like JNK and p38.
  • ASK1 activation is triggered by various cellular stresses, including oxidative and endoplasmic reticulum stress, and calcium influx.

Purpose of the Study:

  • To review recent findings on ASK family proteins.
  • To discuss the implications of ASK family proteins in various diseases.

Main Methods:

  • Literature review of recent findings on ASK family proteins.
  • Analysis of the role of ASK1 in cellular stress responses.
  • Examination of the involvement of ASK family proteins in disease pathogenesis.

Main Results:

  • Elucidation of various regulatory mechanisms of ASK1, particularly its activation by oxidative stress.
  • Emerging evidence implicating ASK family proteins in cancer.
  • Emerging evidence implicating ASK family proteins in cardiovascular diseases.
  • Emerging evidence implicating ASK family proteins in neurodegenerative diseases.

Conclusions:

  • ASK family proteins are crucial regulators of cellular stress responses.
  • ASK family proteins represent potential therapeutic targets for cancer, cardiovascular diseases, and neurodegenerative diseases.

Related Concept Videos

Other Stress Responses in Bacteria01:30

Other Stress Responses in Bacteria

Bacteria have global regulatory systems that control several types of stress mechanisms. These include Pho regulon and the heat shock response, which are essential systems for environmental adaptation, such as nutrient limitation and proteotoxic stress. The Pho regulon and the heat shock response exemplify bacterial resilience, enabling rapid adaptation to fluctuating environmental conditions.Pho RegulonBacteria require phosphorus for essential cellular processes, including nucleic acid...
Regulation of the Unfolded Protein Response01:31

Regulation of the Unfolded Protein Response

Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
The Unfolded Protein Response01:37

The Unfolded Protein Response

The ER is the hub of protein synthesis in a cell. It has robust systems to quality control protein folding and also for degradation of terminally misfolded proteins. Under normal conditions, a small proportion of misfolded proteins that cannot be salvaged need to be transported to the cytoplasm by the ER-associated degradation or ERAD pathways. However, if the ERAD cannot handle the misfolded proteins, the cell activates the unfolded protein response or UPR to adjust the protein folding...
Stress Response System01:21

Stress Response System

The stress response system, also known as the fight-or-flight response, is the body's automatic physiological reaction to perceived threats. Hans Selye introduced the concept of General Adaptation Syndrome (GAS) to describe the predictable pattern of changes that occur in response to stress. GAS consists of three sequential stages: alarm, resistance, and exhaustion. This model helps explain how chronic stress can contribute to health problems.
Alarm stage
In the alarm stage, the body's initial...
Physiological Foundation of Stress01:24

Physiological Foundation of Stress

Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
Role of the Sympathetic Nervous System
Adrenaline triggers the...
Role of Proteins in the Human Body01:28

Role of Proteins in the Human Body

Proteins are the building block of life. They are also  the most abundant macromolecules with as many diverse roles in the body. They are part of many structural components that provide unique shapes and structures to animal cells, tissues, and organs. In addition, they also act as biological catalysts and carry out several anabolic and catabolic reactions. Notably, some proteins are chemical messengers and regulate many critical processes, such as metabolism, growth, and development. They are...