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Senescence and Cell Plasticity in Cancer Development

A special issue of Cancers (ISSN 2072-6694). This special issue belongs to the section "Molecular Cancer Biology".

Deadline for manuscript submissions: 30 September 2026 | Viewed by 891

Special Issue Editors


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Guest Editor
Departamento de Ciencias de la Salud y Biomédicas, Facultad de Ciencias de la Salud, Universidad Loyola Andalucía, Avda. de las Universidades s/n, Dos Hermanas, 41704 Sevilla, Spain
Interests: tumor suppressors; oncogenes; cancer stem cells; senescence; therapy resistance

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Guest Editor Assistant
Departamento de Ciencias de la Salud y Biomédicas, Facultad de Ciencias de la Salud, Universidad Loyola Andalucía, Avda. de las Universidades s/n, Dos Hermanas, 41704 Sevilla, Spain
Interests: molecular diagnostic oncology; cancer targeted therapy; precision oncology; tumor molecular alterations; genetic testing in oncology

Special Issue Information

Dear Colleagues,

Cellular senescence and plasticity represent two pivotal yet contrasting biological processes that significantly influence cancer development. Cellular senescence is a stress response in which cells exit the cycle, lose the ability to proliferate, and undergo several morphological and metabolic changes, such as the secretion of numerous cytokines, chemokines, and growth factors that enable damaged cells to communicate with surrounding cells: the senescence-associated secretory phenotype (SASP). Therefore, senescence is a tumor-suppressive mechanism that promotes tissue repair or regeneration, preventing the proliferation of damaged cells. However, a prominent feature of the SASP is the ability to cause inflammation and angiogenesis and, therefore, also promote cancer initiation.

In parallel, cancer cells exhibit plasticity, the ability to dynamically shift between different phenotypic states within a tumor. This cellular plasticity promotes the differentiation and generation of new cancer stem cells from mature tumor cells. This tumor evolution can lead to tumor heterogeneity and increased resistance to conventional therapies, which may be responsible for metastasis, recurrences, and residual disease.

Emerging evidence suggests that senescence may drive cellular plasticity by creating permissive microenvironments or by incomplete reprogramming of senescent cells. Understanding the molecular mechanisms that underlie the senescence–plasticity axis opens new avenues for improving therapeutic treatments and limit tumor evolution.

This Special Issue will highlight the role of senescence and cell plasticity in cancer development. Original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Mechanisms of cellular senescence in tumor suppression and cancer initiation.
  • Senescence-associated secretory phenotype (SASP) and its role in cancer microenvironments.
  • The impact of senescence in cell plasticity.
  • Regulation of cell plasticity and/or senescence during cancer progression.
  • Interplay between senescence and epithelial–mesenchymal transition to drive metastasis or therapy resistance.
  • Single-cell analysis of senescent and plastic cancer cell populations.
  • Senescence and cell plasticity in cancer stem cell maintenance.
  • The connection between senescence and the immune response.
  • Therapeutic targeting of senescence and cell plasticity.

Dr. Eva María Verdugo-Sivianes
Guest Editor

Dr. Elena Aguado-Domínguez
Guest Editor Assistant

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Cancers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • cellular senescence
  • cell plasticity
  • stem cells
  • SASP
  • therapy resistance
  • tumor microenvironment
  • cancer development

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Published Papers (1 paper)

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Research

18 pages, 1854 KB  
Article
Heterogeneity of PD-L1 Expression Between the Primary Tumor and Matched Lymph Node Metastases in Head and Neck Squamous Cell Carcinomas
by Moritz Knebel, Gilbert Georg Klamminger, Jan Philipp Kühn, Sandrina Körner, Silke Wemmert, Lukas Alexander Brust, Felix Braun, Sigrun Smola, Mathias Wagner, Martin Ertz, Luc G. T. Morris, Bernhard Schick and Maximilian Linxweiler
Cancers 2026, 18(8), 1286; https://doi.org/10.3390/cancers18081286 - 18 Apr 2026
Viewed by 527
Abstract
Background: The role of immune checkpoint inhibition in treating head and neck squamous cell carcinoma (HNSCC) is expanding, yet response rates to PD-L1 therapy remain inconsistent and generally poor. Although several studies have examined heterogeneous intratumoral PD-L1 expression, the disparity in response [...] Read more.
Background: The role of immune checkpoint inhibition in treating head and neck squamous cell carcinoma (HNSCC) is expanding, yet response rates to PD-L1 therapy remain inconsistent and generally poor. Although several studies have examined heterogeneous intratumoral PD-L1 expression, the disparity in response to PD-L1 therapy between primary tumors and their associated lymph node metastases remains unclear. Methods: Primary tumor samples and two matching lymph node metastases were obtained from a cohort of 50 patients and immunohistochemically stained with a PD-L1 antibody. PD-L1 expression, assessed using the combined positive score (CPS) and tumor proportion score (TPS), and immune infiltration, measured with an immunoreactive score (IRS), were compared between the primary tumor and lymph node metastases. These measures were then correlated with other histopathological and clinical features. Results: PD-L1 expression, evaluated by CPS and TPS, showed no significant differences between the primary tumor and matched lymph node metastases. Discordance relative to established regulatory cut-offs was observed in a subset of patients, affecting 18% (CPS; 95% CI, 8.0–30.0%) and 4% (TPS; 95% CI, 0.0–10.0%) of cases. CPS and TPS values were not influenced by primary tumor subsite or HPV status. Conversely, immune infiltration measured by IRS was significantly affected by primary tumor subsite location. Both HPV tumor status and primary tumor subsite were statistically significantly associated with overall survival. Conclusions: Our findings highlight variability in PD-L1 expression in HNSCC and may offer context for differential responses of primary tumors and lymph node metastases to immune checkpoint therapy reported in recent clinical studies. These observations support the need for a more comprehensive characterization of PD-L1 expression across tumor sites in head and neck cancer. Further investigation is required to determine whether, and in which settings, reassessment of PD-L1 status in metastatic lesions—including lymph node metastases—may provide additional clinically relevant information when initial testing does not meet established therapeutic cut-offs. Full article
(This article belongs to the Special Issue Senescence and Cell Plasticity in Cancer Development)
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