Targeting of Tumor Dormancy Pathway

A special issue of Onco (ISSN 2673-7523).

Deadline for manuscript submissions: 30 May 2025 | Viewed by 5729

Special Issue Editors


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Guest Editor
Laboratory of Histology-Embryology, Faculty of Medicine, National & Kapodistrian University of Athens, 75 Mikras Asias Street, Goudi, 11527 Athens, Greece
Interests: DNA polymorphisms; RNA; miRNAs; carcinogenesis; bioinformatics; DNA damage; cell cycle; cancer

Special Issue Information

Dear Colleagues,

Dormant tumor cells, also known as minimal residual disease, represent a population of cancer cells that have entered a state of growth arrest, typically after primary tumor removal or during periods of remission. This dormant state allows them to evade conventional cancer therapies, such as chemotherapy or radiation, which primarily target actively dividing cells. It is generally thought that dormant tumor cells have the potential to reactivate and give rise to metastatic tumors years or even decades after initial treatment. However, from another perspective, keeping tumor cells silent for decades can be regarded as tantamount to cure. From both perspectives, it is important to understand the mechanisms underlying dormancy. Keeping tumor cells dormant for indefinite periods of time could form a new strategy of cancer treatment. This Special Issue will highlight the current state of the knowledge in tumor dormancy, targeting of tumor dormancy pathways, and future prospects for exploiting tumor dormancy for cancer therapies.

Dr. Athanassios Kotsinas
Dr. Constantin N. Baxevanis
Guest Editors

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Keywords

  • dormant tumor cells
  • conventional cancer therapies
  • cancer therapies
  • chemotherapy
  • radiation
  • tumor dormancy
  • targeting of tumor dormancy pathways

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Published Papers (4 papers)

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Research

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14 pages, 1718 KiB  
Article
The Role of the Bone Marrow Microenvironment in Physical Function and Quality of Life in Patients with Multiple Myeloma After First-Line Treatment with Novel Agents and Autologous Transplantation
by Polyxeni Spiliopoulou, Pantelis Rousakis, Chrysanthi Panteli, Evangelos Eleutherakis-Papaiakovou, Magdalini Migkou, Nikolaos Kanellias, Ioannis Ntanasis-Stathopoulos, Panagiotis Malandrakis, Foteini Theodorakakou, Despina Fotiou, Evangelos Terpos, Vassilios Myrianthopoulos, Maria Gavriatopoulou, Ourania E. Tsitsilonis, Efstathios Kastritis, Meletios Athanasios Dimopoulos and Gerasimos Terzis
Onco 2025, 5(2), 21; https://doi.org/10.3390/onco5020021 - 1 May 2025
Viewed by 179
Abstract
Background/Objectives: Multiple myeloma is a malignancy of plasma cells detected in the bone marrow, inducing symptoms like anemia, hypercalcemia, renal problems, and bone fractures in multiple myeloma patients, affecting their quality of life. The bone marrow microenvironment plays a crucial role in the [...] Read more.
Background/Objectives: Multiple myeloma is a malignancy of plasma cells detected in the bone marrow, inducing symptoms like anemia, hypercalcemia, renal problems, and bone fractures in multiple myeloma patients, affecting their quality of life. The bone marrow microenvironment plays a crucial role in the prognosis and progression of the disease. The purpose of this study was to examine the relationship between the percentages of the major cell populations of the bone marrow, including immune cells, and physical function/quality of life in multiple myeloma patients after first-line treatment. Methods: Twenty-one multiple myeloma patients (N = 14 men, N = 7 women) participated in the study after completing first-line treatment. Bone marrow and blood samples were taken one hundred days after transplantation, while physical function (6 min walking test, handgrip test, maximal aerobic power, and isometric strength), health-related quality of life (QLQ-C30), and body composition (DXA) were assessed 2–5 days later. Flow cytometry was used to assess the percentages of plasma cells, mast cells, B cells (total, precursors, naïve, and memory), T cells (total, CD27− and CD27+), NK/NKT cells (total, CD27− and CD27+), eosinophils, monocytes, neutrophils, myeloid progenitors, erythroblasts, and erythroid progenitors, expressed as percentages of total nucleated cells of the bone marrow. Results: The percentage of CD27+ NK/NKT cells was correlated with five parameters of the quality of life questionnaire: physical function (r = 0.78, p = 0.005), role functioning (r = 0.69, p = 0.020), fatigue (r = −0.86, p = 0.000), pain (r = 0.68, p = 0.021), and dyspnea (r = −0.80, p = 0.003). Conclusions: In conclusion, stronger immune surveillance in the bone marrow from CD27+ NK/NKT cells is correlated with better quality of life in multiple myeloma patients. Full article
(This article belongs to the Special Issue Targeting of Tumor Dormancy Pathway)
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Review

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26 pages, 2910 KiB  
Review
Targeting Pathways and Mechanisms in Gynecological Cancer with Antioxidant and Anti-Inflammatory Phytochemical Drugs
by Sandhya Shukla, Arvind Kumar Shukla, Navin Ray, Adarsha Mahendra Upadhyay, Fowzul Islam Fahad, Sayan Deb Dutta, Arulkumar Nagappan and Raj Kumar Mongre
Onco 2025, 5(2), 24; https://doi.org/10.3390/onco5020024 - 9 May 2025
Viewed by 310
Abstract
Globally, women’s cancer-related morbidity and death are still caused mainly by gynecologic cancer. Antioxidant and anti-inflammatory drugs have shown promise in treating gynecologic cancer because of the complex interactions among oxidative stress, inflammation, and the development of tumors. This review focuses on how [...] Read more.
Globally, women’s cancer-related morbidity and death are still caused mainly by gynecologic cancer. Antioxidant and anti-inflammatory drugs have shown promise in treating gynecologic cancer because of the complex interactions among oxidative stress, inflammation, and the development of tumors. This review focuses on how these drugs, which include polyphenols, terpenoids, and thiols-related phytochemical-derived compounds target different pathways associated with developing and progressing gynecologic cancer. We investigate what factors affect the tumor microenvironment, specifically how they affect immunological response and vasculogenesis. Through the review of recent studies, we have gained an extensive understanding of the molecular pathways that anti-inflammatory and antioxidant drugs use to achieve their therapeutic benefits. Gynecologic cancer is still a potent cause of cancer-related deaths and fatalities for women globally. Antioxidant and anti-inflammatory drugs have shown promise in treating gynecologic cancer because of the complex interactions among oxidative stress, inflammation, and the development of tumors. This review focuses on how these drugs target different pathways associated with developing and progressing gynecologic cancer. We investigate what factors affect the tumor microenvironment, specifically how they affect immunological response and vasculogenesis. Through the review of recent studies, we have gained an extensive understanding of the molecular pathways that anti-inflammatory and antioxidant drugs use to achieve their therapeutic benefits. Full article
(This article belongs to the Special Issue Targeting of Tumor Dormancy Pathway)
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21 pages, 769 KiB  
Review
Dormant Tumor Cells: Current Opportunities and Challenges in Clinical Practice
by Emma Boydell, Maxime Borgeaud and Petros Tsantoulis
Onco 2025, 5(1), 3; https://doi.org/10.3390/onco5010003 - 10 Jan 2025
Viewed by 1386
Abstract
Tumor dormancy plays a pivotal role in cancer relapse. Dormant tumor cells have been identified in distant sites, even in early-stage tumors, and are associated with worse outcomes. This review explores the current understanding of the molecular and cellular mechanisms behind tumor dormancy, [...] Read more.
Tumor dormancy plays a pivotal role in cancer relapse. Dormant tumor cells have been identified in distant sites, even in early-stage tumors, and are associated with worse outcomes. This review explores the current understanding of the molecular and cellular mechanisms behind tumor dormancy, including the role of the immune system and the microenvironment. Targeting dormant tumor cells could be a therapeutic strategy to offer long-term remission and potentially cure cancer. Unfortunately, the translation of this knowledge in clinical practice is lacking. We assess the feasibility of detecting and measuring dormant tumor cells in clinical practice, and give an overview of potential therapeutic targets, both in terms of maintaining tumor cells in a dormant state, and in terms of eradicating this tumor population. Full article
(This article belongs to the Special Issue Targeting of Tumor Dormancy Pathway)
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Other

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9 pages, 1755 KiB  
Commentary
When Therapy-Induced Cancer Cell Apoptosis Fuels Tumor Relapse
by Razmik Mirzayans
Onco 2024, 4(1), 37-45; https://doi.org/10.3390/onco4010003 - 4 Feb 2024
Cited by 3 | Viewed by 2830
Abstract
Most therapeutic strategies for solid tumor malignancies are designed based on the hypothesis that cancer cells evade apoptosis to exhibit therapy resistance. This is somewhat surprising given that clinical studies published since the 1990s have demonstrated that increased apoptosis in solid tumors is [...] Read more.
Most therapeutic strategies for solid tumor malignancies are designed based on the hypothesis that cancer cells evade apoptosis to exhibit therapy resistance. This is somewhat surprising given that clinical studies published since the 1990s have demonstrated that increased apoptosis in solid tumors is associated with cancer aggressiveness and poor clinical outcome. This is consistent with more recent reports demonstrating non-canonical (pro-survival) roles for apoptotic caspases, including caspase 3, as well as the ability of cancer cells to recover from late stages of apoptosis via a process called anastasis. These activities are essential for the normal development and maintenance of a healthy organism, but they also enable malignant cells (including cancer stem cells) to resist anticancer treatment and potentially contribute to clinical dormancy (minimal residual disease). Like apoptosis, therapy-induced cancer cell dormancy (durable proliferation arrest reflecting various manifestations of genome chaos) is also not obligatorily a permanent cell fate. However, as briefly discussed herein, compelling pre-clinical studies suggest that (reversible) dormancy might be the “lesser evil” compared to treacherous apoptosis. Full article
(This article belongs to the Special Issue Targeting of Tumor Dormancy Pathway)
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