Related Experiment Video

Updated: May 5, 2026

Author Spotlight: Exploring Salidroside's Molecular Mechanisms in Breast Cancer Treatment
11:13

Author Spotlight: Exploring Salidroside's Molecular Mechanisms in Breast Cancer Treatment

Published on: June 9, 2023

2.3K

Novel mechanism of MDA-7/IL-24 cancer-specific apoptosis through SARI induction

Rupesh Dash1, Praveen Bhoopathi, Swadesh K Das

  • 1Authors' Affiliations: Institute of Life Sciences, Bhubaneshwar, Orissa, India; Department of Human and Molecular Genetics, VCU Institute of Molecular Medicine, and VCU Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia.

Cancer Research
|November 28, 2013
PubMed

Insights

Melanoma differentiation-associated gene-7/interleukin-24 (mda-7/IL-24) and SARI show potent antitumor activity by inducing cancer-specific cell death. The mda-7/IL-24-SARI axis is crucial for these anticancer effects.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Therapy

Background:

  • Melanoma differentiation-associated gene-7/interleukin-24 (mda-7/IL-24) and Suppressor of AP-1, induced by IFN (SARI) exhibit antitumor properties.
  • These genes are not inherently present in cancer cells and require forced expression for therapeutic effects.

Purpose of the Study:

  • To investigate the antitumor mechanisms of mda-7/IL-24 and SARI.
  • To elucidate the relationship between mda-7/IL-24 and SARI in cancer cell death.
  • To explore the potential of the mda-7/IL-24-SARI axis as a cancer treatment strategy.

Main Methods:

  • Subtraction hybridization and induction of terminal differentiation in melanoma cells.
  • Gene expression analysis of mda-7/IL-24 and SARI in cancer cells.
  • Inhibition of K-ras downstream signaling and p38 MAPK pathway.
  • SARI-antisense approaches and recombinant protein studies.

Main Results:

  • Forced expression of mda-7/IL-24 or SARI induces cancer-specific cell death without harming normal cells.
  • Ectopic mda-7/IL-24 expression upregulates SARI, leading to cell death, and this effect is necessary for mda-7/IL-24's antitumor activity.
  • MDA-7/IL-24 triggers an autocrine loop involving SARI and activates p38 MAPK signaling, inducing GADD genes and apoptosis.

Conclusions:

  • The mda-7/IL-24-SARI axis plays a significant role in cancer-specific killing.
  • Targeting this axis offers a potential therapeutic strategy for both local and metastatic cancers.
  • MDA-7/IL-24's ability to induce SARI and trigger apoptosis pathways highlights its therapeutic potential.

More Related Videos

Enhancement of Apoptotic and Autophagic Induction by a Novel Synthetic C-1 Analogue of 7-deoxypancratistatin in Human Breast Adenocarcinoma and Neuroblastoma Cells with Tamoxifen19:44

Enhancement of Apoptotic and Autophagic Induction by a Novel Synthetic C-1 Analogue of 7-deoxypancratistatin in Human Breast Adenocarcinoma and Neuroblastoma Cells with Tamoxifen

Published on: May 30, 2012

18.2K
Induction of Mesenchymal-Epithelial Transitions in Sarcoma Cells11:42

Induction of Mesenchymal-Epithelial Transitions in Sarcoma Cells

Published on: April 7, 2017

8.4K

Related Concept Videos

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...
6.2K
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...
6.2K
The JAK-STAT Signaling Pathway01:20

The JAK-STAT Signaling Pathway

Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
10.2K
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.0K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
3.6K
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
5.2K