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Intracellular Refolding Assay
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HSP-molecular chaperones in cancer biogenesis and tumor therapy: an overview
Francesca Rappa1, Felicia Farina, Giovanni Zummo
1Department of Experimental Medicine and Clinical Neuroscience, University of Palermo, Palermo, Italy. Via del Vespro 129, 90127, Palermo, Italy. francesco.cappello@unipa.it
Abstract:
Molecular chaperones, many of which are heat-shock proteins (HSPs), are an important class of molecules with various functions. Pathological conditions in which chaperones become etiological and/or pathogenic factors are called chaperonopathies, and are classified into by defect, by excess, and by 'mistake'. In the latter case, the chaperone is structurally and functionally normal but participates in pathways that favor disease, although in some cases the chaperone may have post-translational modifications that may lead it to change its location and function and, thus, to become pathogenic. For example, HSP-chaperones are involved in carcinogenesis in various ways, so that some forms of cancer may be considered 'chaperonopathies by mistake'. This concept suggests new strategies for anticancer therapy (chaperonotherapy), in which the primary targets or therapeutic agents are chaperones. Chaperonotherapy consists of the utilization of HSP-chaperones for treating chaperonopathies, including cancer. Negative chaperonotherapy is aimed at eliminating or blocking the action of chaperones that favor carcinogenesis or other diseases, whereas positive chaperonotherapy uses chaperones, genes or proteins, to fight against diseases, such as cancer, by stimulating the immune system or the cellular defenses against stress.
Insights
Molecular chaperones, or heat-shock proteins (HSPs), can cause diseases called chaperonopathies. Targeting these HSPs offers new anticancer therapies, known as chaperonotherapy.
Area of Science:
- Molecular Biology
- Cellular Biology
- Oncology
Background:
- Molecular chaperones, including heat-shock proteins (HSPs), perform critical cellular functions.
- Chaperonopathies are diseases arising from chaperone dysfunction, categorized by defect, excess, or 'mistake'.
- Some chaperones, even when structurally normal, can contribute to disease pathways, including cancer, through post-translational modifications or involvement in disease-promoting pathways.
Purpose of the Study:
- To introduce the concept of chaperonopathies, particularly 'chaperonopathies by mistake'.
- To highlight the role of HSP-chaperones in carcinogenesis.
- To propose chaperonotherapy as a novel therapeutic strategy for cancer and other diseases.
Main Methods:
- Review of existing literature on molecular chaperones, HSPs, and chaperonopathies.
- Analysis of the role of HSP-chaperones in cancer development.
- Conceptualization of chaperonotherapy strategies.
Main Results:
- Chaperones can be etiological or pathogenic factors in diseases, termed chaperonopathies.
- Certain cancers can be classified as 'chaperonopathies by mistake' due to HSP-chaperone involvement.
- HSP-chaperones represent viable targets for novel therapeutic interventions.
Conclusions:
- The understanding of chaperonopathies provides a framework for developing targeted therapies.
- Chaperonotherapy, utilizing HSP-chaperones, offers promising avenues for cancer treatment.
- Both negative (blocking detrimental chaperones) and positive (enhancing beneficial chaperone functions) chaperonotherapy strategies warrant further investigation.
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