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Published on: May 9, 2020
Protein Posttranslational Modification in Stemness Remodeling and Its Emerging Role as a Novel Therapeutic Target in
1School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China.
Abstract:
The posttranslational modifications (PTMs) of proteins, as critical mechanisms for protein regulation, are well known to enhance the functional diversity of the proteome and dramatically participate in complicated biological processes. Recent efforts in the field of cancer biology have illustrated the extensive landscape of PTMs and their crosstalk with a wide range of pro-tumorigenic signaling pathways that decisively contribute to neoplastic transformation, tumor recurrence, and resistance to oncotherapy. Cancer stemness is an emerging concept that maintains the ability of tumor cells to self-renew and differentiate and has been recognized as the root of cancer development and therapy resistance. In recent years, the PTM profile for modulating the stemness of various tumor types has been identified. This breakthrough has shed light on the underlying mechanisms by which protein PTMs maintain cancer stemness, initiate tumor relapse, and confer resistance to oncotherapies. This review focuses on the latest knowledge of protein PTMs in reprogramming the stemness of gastrointestinal (GI) cancer. A deeper understanding of abnormal PTMs in specific proteins or signaling pathways provides an opportunity to specifically target cancer stem cells and highlights the clinical relevance of PTMs as potential biomarkers and therapeutic targets for patients with GI malignancies.
Insights
Posttranslational modifications (PTMs) regulate protein function and are crucial in cancer. This review explores how PTMs reprogram gastrointestinal cancer stemness, offering new therapeutic targets.
Area of Science:
- Biochemistry
- Molecular Biology
- Cancer Biology
Background:
- Posttranslational modifications (PTMs) are vital protein regulatory mechanisms.
- PTMs influence proteome diversity and complex biological processes.
- PTMs are increasingly recognized for their role in cancer development, recurrence, and therapy resistance.
Purpose of the Study:
- To review the latest findings on protein PTMs in reprogramming gastrointestinal (GI) cancer stemness.
- To elucidate the mechanisms by which PTMs maintain cancer stemness and drive therapeutic resistance.
- To highlight the clinical relevance of PTMs as biomarkers and therapeutic targets in GI malignancies.
Main Methods:
- Literature review focusing on recent advancements in PTMs and cancer stemness.
- Analysis of PTM profiles in various tumor types, particularly GI cancers.
- Examination of signaling pathways involved in PTM-mediated stemness regulation.
Main Results:
- PTMs play a significant role in modulating cancer stemness across different tumor types.
- Aberrant PTMs are implicated in neoplastic transformation, tumor recurrence, and resistance to oncotherapy.
- Specific PTMs are identified as key regulators of gastrointestinal cancer stem cell self-renewal and differentiation.
Conclusions:
- Understanding abnormal PTMs in GI cancer offers opportunities to target cancer stem cells.
- PTMs represent promising biomarkers for GI cancer diagnosis and prognosis.
- Targeting PTMs presents a novel therapeutic strategy for GI malignancies.
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