Related Experiment Video

Updated: Jun 13, 2026

Studying the Effects of Tumor-Secreted Paracrine Ligands on Macrophage Activation using Co-Culture with Permeable Membrane Supports
07:44

Studying the Effects of Tumor-Secreted Paracrine Ligands on Macrophage Activation using Co-Culture with Permeable Membrane Supports

Published on: November 28, 2019

Modulation of SOCS protein expression influences the interferon responsiveness of human melanoma cells

Gregory B Lesinski1, Jason M Zimmerer, Melanie Kreiner

  • 1Department of Surgery Arthur G, James Cancer Hospital and Richard J, Solove Research Institute, The Ohio State University, Columbus, OH 43210, USA.

BMC Cancer
|April 20, 2010
PubMed
Abstract

Insights

Suppressors of cytokine signaling (SOCS) proteins are present in melanoma cells and impact interferon signaling. Modulating SOCS expression influences melanoma cell response to interferon therapy, offering potential therapeutic strategies.

Area of Science:

  • Oncology
  • Immunology
  • Molecular Biology

Background:

  • Interferons (IFNs) regulate melanoma cell growth and are used in cancer therapy.
  • Suppressors of cytokine signaling (SOCS) are negative regulators of IFN signaling.
  • The role of SOCS in mediating IFN-resistance in human melanoma remains unclear.

Purpose of the Study:

  • To investigate the role of SOCS1 and SOCS3 in mediating interferon-resistance in human melanoma cells.
  • To determine the effect of SOCS protein modulation on melanoma cell responsiveness to IFNs.

Main Methods:

  • Immunoblot analysis to assess SOCS1 and SOCS3 expression in melanoma cell lines and melanocytes.
  • Over-expression of SOCS proteins using retroviral vectors and inhibition using siRNA.
  • Flow cytometry to measure STAT1 phosphorylation and Real-Time PCR for IFN-stimulated gene expression.

Main Results:

  • SOCS1 and SOCS3 proteins are expressed in human melanoma cells and their expression is enhanced by IFN-alpha and IFN-gamma stimulation.
  • Over-expression of SOCS proteins inhibited STAT1 phosphorylation and IFN-stimulated gene expression.
  • Inhibition of SOCS proteins using siRNA enhanced melanoma cell responsiveness to IFN stimulation.

Conclusions:

  • SOCS proteins are expressed in human melanoma and influence melanoma cell response to IFN-alpha and IFN-gamma.
  • Modulating SOCS expression presents a potential strategy to enhance the efficacy of interferon-based therapies for melanoma.

More Related Videos

Ex Vivo Culture of Circulating Tumor Cells in the Cerebral Spinal Fluid from Melanoma Patients to Study Melanoma-Associated Leptomeningeal Disease06:25

Ex Vivo Culture of Circulating Tumor Cells in the Cerebral Spinal Fluid from Melanoma Patients to Study Melanoma-Associated Leptomeningeal Disease

Published on: March 29, 2024

Vasodilation of Isolated Vessels and the Isolation of the Extracellular Matrix of Tight-skin Mice08:09

Vasodilation of Isolated Vessels and the Isolation of the Extracellular Matrix of Tight-skin Mice

Published on: March 24, 2017

Related Concept Videos

Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
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 activation may...
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
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...
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...