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Updated: Nov 21, 2025

High-throughput Quantitative Real-time RT-PCR Assay for Determining Expression Profiles of Types I and III Interferon Subtypes
Published on: March 24, 2015
Type I Interferons as Joint Regulators of Tumor Growth and Obesity
Sandra Gessani1, Filippo Belardelli2
1Center for Gender-Specific Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy.
Abstract:
Type I interferons (IFN-I) are antiviral cytokines endowed with multiple biological actions, including antitumor activity. Studies in mouse models and cancer patients support the concept that endogenous IFN-I play important roles in the control of tumor development and growth as well as in response to several chemotherapy/radiotherapy treatments. While IFN-I signatures in the tumor microenvironment are often considered as biomarkers for a good prognostic response to antitumor therapies, prolonged IFN-I signaling can lead to immune dysfunction, thereby promoting pathogen or tumor persistence, thus revealing the "Janus face" of these cytokines in cancer control, likely depending on timing, tissue microenvironment and cumulative levels of IFN-I signals. Likewise, IFN-I exhibit different and even opposite effects on obesity, a pathologic condition linked to cancer development and growth. As an example, evidence obtained in mouse models shows that localized expression of IFN-I in the adipose tissue results in inhibition of diet-induced obesity, while hyper-production of these cytokines by specialized cells such as plasmacytoid dendritic cells in the same tissue, can induce systemic inflammatory responses leading to obesity. Further studies in mouse models and humans should reveal the mechanisms by which IFN-I can regulate both tumor growth and obesity and to understand the role of factors such as genetic background, diet and microbioma in shaping the production and action of these cytokines under physiological and pathological conditions.
Insights
Type I interferons (IFN-I) have a dual role in cancer, acting as antitumor agents but also potentially promoting tumor persistence with prolonged signaling. Their complex effects on obesity also warrant further investigation.
Area of Science:
- Immunology
- Oncology
- Metabolic Diseases
Background:
- Type I interferons (IFN-I) are crucial antiviral cytokines with significant roles in cancer immunity and treatment response.
- IFN-I signatures in tumors can predict therapeutic outcomes, but sustained signaling may impair immune function.
- The impact of IFN-I on obesity, a condition linked to cancer, is complex and context-dependent.
Purpose of the Study:
- To explore the multifaceted roles of Type I interferons (IFN-I) in cancer development, treatment response, and obesity.
- To elucidate the "Janus face" of IFN-I, highlighting their dual functions in different biological contexts.
- To understand the regulatory mechanisms of IFN-I in both tumor growth and metabolic health.
Main Methods:
- Analysis of studies involving mouse models and human cancer patients.
- Investigation of IFN-I signatures within the tumor microenvironment.
- Examination of IFN-I expression in adipose tissue and its effects on obesity models.
Main Results:
- Endogenous IFN-I are vital for controlling tumor growth and response to therapies like chemotherapy and radiotherapy.
- While IFN-I can be beneficial, prolonged signaling can lead to immune dysfunction and tumor persistence.
- IFN-I exhibit opposing effects on obesity; localized expression can inhibit it, whereas excessive production can promote it.
Conclusions:
- Type I interferons play a complex, context-dependent role in cancer and obesity, acting as both beneficial and detrimental factors.
- Further research is needed to understand the precise mechanisms governing IFN-I's dual actions and the influence of factors like genetics, diet, and the microbiome.
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