Role of apoptosis repressor with caspase recruitment domain (ARC) in cancer

Zhongjie Yu1,2, Qi Li3, Yi An4

  • 1Center for Molecular Genetics, Institute for Translational Medicine, Qingdao University, Qingdao, Shandong 266000, P.R. China.

Oncology Letters
|December 3, 2019
PubMed

Insights

Apoptosis repressor with caspase recruitment domain (ARC) inhibits apoptosis and is upregulated in tumors, promoting therapeutic resistance. Understanding ARC

Area of Science:

  • Molecular biology
  • Cell biology
  • Oncology

Background:

  • Apoptosis repressor with caspase recruitment domain (ARC) is a key regulator of apoptosis, crucial for cell fate.
  • ARC is highly expressed in terminally differentiated cells like neurons and muscle cells.
  • Aberrant ARC expression is linked to abnormal cell growth and various cancers.

Purpose of the Study:

  • To review the characteristics and cytoprotective functions of ARC.
  • To explore the molecular mechanisms underlying ARC's role in cell fate and cancer.
  • To evaluate ARC as a potential therapeutic target in oncology.

Main Methods:

  • Literature review of existing studies on ARC.
  • Analysis of ARC expression patterns in normal and cancerous tissues.
  • Examination of ARC's involvement in apoptosis regulation and therapeutic resistance.

Main Results:

  • ARC is upregulated in several solid tumors, suppressing cancer cell apoptosis.
  • Elevated ARC levels in cancer cells correlate with therapeutic resistance and poor clinical outcomes, particularly in leukemia.
  • ARC's precise role and molecular mechanisms in cancer require further elucidation.

Conclusions:

  • ARC plays a significant cytoprotective role under various conditions.
  • ARC's involvement in promoting cancer cell survival and therapeutic resistance highlights its potential as a novel cancer therapy target.
  • Further research into ARC's mechanisms could unlock new therapeutic strategies for cancer treatment.

Related Concept Videos

Caspases01:24

Caspases

Caspase, a family of cysteine proteases, serve as effectors in apoptosis. The ced3 gene in C.elegans was first identified to be involved in apoptosis. This gene encodes the ced-3 caspase that is similar to the interleukin-1-beta converting enzyme or ICE in mammals. In addition to apoptosis, caspases also function in the inflammatory response. Inflammatory caspases are essential in activating pro-inflammatory cytokines that recruit immune cells and block the replication of pathogens inside...
13.6K
The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
8.1K
The Extrinsic Apoptotic Pathway01:17

The Extrinsic Apoptotic Pathway

The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
7.9K
Apoptosis01:30

Apoptosis

Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size...
13.7K
Receptor Downregulation in MVBs01:15

Receptor Downregulation in MVBs

Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that  lead to cell proliferation, migration, and differentiation. Overexpression of EGFR  stimulates cells to proliferate. Excessive  EGFR...
2.7K
Negative Regulator Molecules01:23

Negative Regulator Molecules

Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
38.1K