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Molecular Research on Prostate Cancer

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Pathology, Diagnostics, and Therapeutics".

Deadline for manuscript submissions: 20 November 2024 | Viewed by 6607

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Guest Editor
Department of Pathology and Laboratory Medicine, Arnie Charbonneau Cancer Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
Interests: prostate cancer; genomics; transcriptome; tumor biomarkers; tumorigenesis
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Special Issue Information

Dear Colleagues,

Prostate cancer represents a significant global health challenge, with a demand for improved patient outcomes. Despite treatment strategy advancements, the molecular complexity of this disease remains a daunting hurdle. Understanding the molecular mechanism driving prostate cancer initiation, progression and therapeutic resistance is pivotal for developing precise and effective interventions. 

This Special Issue aims to consolidate the latest findings and perspectives on the molecular landscape of prostate cancer, genomic alterations, epigenetic modifications, signaling pathways and novel biomarkers. We aim to foster a collaborative platform for researchers to contribute transformative insights that can shape the future of prostate cancer management and provide a comprehensive overview of the latest breakthroughs in the field. Authors are invited to contribute research articles elucidating the molecular intricacies underlying prostate cancer, fostering a deeper comprehension that can shape relevant targeted therapies and precision medicine. 

Dr. Yaser Gamallat
Guest Editor

Manuscript Submission Information

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Keywords

  • prostate cancer
  • molecular biology
  • genomics
  • biomarkers
  • signaling pathways
  • precision medicine
  • treatment resistance
  • epigenetics
  • therapeutic targets

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Published Papers (6 papers)

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Research

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14 pages, 3142 KiB  
Article
Docetaxel-Induced Cell Death Is Regulated by a Fatty Acid-Binding Protein 12-Slug-Survivin Pathway in Prostate Cancer Cells
by Rong-Zong Liu, Mansi Garg, Xiao-Hong Yang and Roseline Godbout
Int. J. Mol. Sci. 2024, 25(17), 9669; https://doi.org/10.3390/ijms25179669 - 6 Sep 2024
Viewed by 631
Abstract
Chemotherapy is an important treatment option for advanced prostate cancer, especially for metastatic prostate cancer (PCa). Resistance to first-line chemotherapeutic drugs such as docetaxel often accompanies prostate cancer progression. Attempts to overcome resistance to docetaxel by combining docetaxel with other biological agents have [...] Read more.
Chemotherapy is an important treatment option for advanced prostate cancer, especially for metastatic prostate cancer (PCa). Resistance to first-line chemotherapeutic drugs such as docetaxel often accompanies prostate cancer progression. Attempts to overcome resistance to docetaxel by combining docetaxel with other biological agents have been mostly unsuccessful. A better understanding of the mechanisms underlying docetaxel resistance may provide new avenues for the treatment of advanced PCa. We have previously found that the fatty acid-binding protein 12 (FABP12)-PPARγ pathway modulates lipid-related bioenergetics and PCa metastatic transformation through induction of Slug, a master driver of epithelial-to-mesenchymal transition (EMT). Here, we report that the FABP12-Slug axis also underlies chemoresistance in PCa cells. Cell sensitivity to docetaxel is markedly suppressed in FABP12-expressing cells, along with induction of Survivin, a typical apoptosis inhibitor, and inhibition of cleaved PARP, a hallmark of programmed cell death. Importantly, Slug depletion down-regulates Survivin and restores cell sensitivity to docetaxel in FABP12-expressing cells. Finally, we also show that high levels of Survivin are associated with poor prognosis in PCa patients, with FABP12 status determining its prognostic significance. Our research identifies a FABP12-Slug-Survivin pathway driving docetaxel resistance in PCa cells, suggesting that targeting FABP12 may be a precision approach to improve chemodrug efficacy and curb metastatic progression in PCa. Full article
(This article belongs to the Special Issue Molecular Research on Prostate Cancer)
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19 pages, 4086 KiB  
Article
Alterations in Tumor Aggression Following Androgen Receptor Signaling Restoration in Canine Prostate Cancer Cell Lines
by Demitria M. Vasilatis, Neelu Batra, Christopher A. Lucchesi, Christine J. Abria, Eva-Maria Packeiser, Hugo Murua Escobar and Paramita M. Ghosh
Int. J. Mol. Sci. 2024, 25(16), 8628; https://doi.org/10.3390/ijms25168628 - 7 Aug 2024
Viewed by 863
Abstract
In prostate cancer (PCa), androgens upregulate tumorigenesis, whereas in benign tissue, the revival of androgen receptor (AR) signaling suppresses aggressive behaviors, suggesting therapeutic potential. Dogs, natural PCa models, often lack AR in PCa. We restored AR in dog PCa to investigate resultant characteristics. [...] Read more.
In prostate cancer (PCa), androgens upregulate tumorigenesis, whereas in benign tissue, the revival of androgen receptor (AR) signaling suppresses aggressive behaviors, suggesting therapeutic potential. Dogs, natural PCa models, often lack AR in PCa. We restored AR in dog PCa to investigate resultant characteristics. Three AR-null canine PCa lines (1508, Leo, 1258) were transfected with canine wild-type AR and treated with dihydrotestosterone (DHT). In 1508, AR restoration decreased clonogenicity (p = 0.03), viability (p = 0.004), migration (p = 0.03), invasion (p = 0.01), and increased expression of the tumor suppressor NKX3.1, an AR transcriptional target (p = 0.001). In Leo, AR decreased clonogenicity (p = 0.04) and the expression of another AR transcriptional target FOLH1 (p < 0.001) and increased the expression of NKX3.1 (p = 0.01). In 1258, AR increased migration (p = 0.006) and invasion (p = 0.03). Epithelial–mesenchymal transition (EMT) marker (Vimentin, N-cadherin, SNAIL1) expression increased with AR restoration in Leo and 1258 but not 1508; siRNA vimentin knockdown abrogated AR-induced 1258 migration only. Overall, 1508 showed AR-mediated tumor suppression; AR affected proliferation in Leo but not migration or invasion; and EMT and AR regulated migration and invasion in 1258 but not proliferation. This study highlights the heterogeneous nature of PCa in dogs and cell line-specific effects of AR abrogation on aggressive behaviors. Full article
(This article belongs to the Special Issue Molecular Research on Prostate Cancer)
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19 pages, 2677 KiB  
Article
The Prognostic and Therapeutic Potential of Fragile X Mental Retardation 1 (FMR1) Gene Expression in Prostate Adenocarcinoma: Insights into Survival Outcomes and Oncogenic Pathway Modulation
by Salem Baldi, Bushra Amer, Fawze Alnadari, Maged AL-Mogahed, Yaqin Gao and Yaser Gamallat
Int. J. Mol. Sci. 2024, 25(13), 7290; https://doi.org/10.3390/ijms25137290 - 2 Jul 2024
Viewed by 938
Abstract
Prostate adenocarcinoma (PRAD) is the second most common tumor associated with death. The role and mechanisms of the fragile X mental retardation 1 (FMR1) gene in PRAD remain unknown. We conducted an analysis of FMR1 expression in PRAD to determine its [...] Read more.
Prostate adenocarcinoma (PRAD) is the second most common tumor associated with death. The role and mechanisms of the fragile X mental retardation 1 (FMR1) gene in PRAD remain unknown. We conducted an analysis of FMR1 expression in PRAD to determine its prognostic importance and connection to carcinogenic pathways such as PI3K_AKT_mTOR. Survival analyses were utilized to establish a correlation between FMR1 expression and patient outcomes. We used the integration of genomic data with bioinformatic predictions to predict the regulatory factors of the FMR1 gene in PRAD. Our data revealed that individuals with higher levels of FMR1 expression experience worse survival outcomes compared to those with lower expression (hazard ratio [HR] = 5.08, 95% confidence interval [CI] = 1.07 – 24, p = 0.0412). FMR1 expression was significantly higher in patients with advanced pathological tumor stages, particularly in the pT3 and pT4 combined stages and the pN1 nodal stage. Furthermore, patients with high Gleason scores (GSs) (combined GSs 8 and 9) exhibited increased levels of FMR1 expression. Our results further identify a possible regulatory link between FMR1 and key oncogenic pathways, including PI3K_AKT_mTOR, and predict the possible mechanism by which FMR1 is regulated in PRAD. Our data suggest that the FMR1 gene could serve as a biomarker for PRAD progression. However, in-depth investigations, including those with large patient samples and in vitro studies, are needed to validate this finding and understand the mechanisms involved. Full article
(This article belongs to the Special Issue Molecular Research on Prostate Cancer)
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14 pages, 2839 KiB  
Article
Anticancer Effect of Hemin through ANO1 Inhibition in Human Prostate Cancer Cells
by So-Hyeon Park, Yechan Lee, Hyejin Jeon, Junghwan Park, Jieun Kim, Mincheol Kang and Wan Namkung
Int. J. Mol. Sci. 2024, 25(11), 6032; https://doi.org/10.3390/ijms25116032 - 30 May 2024
Cited by 1 | Viewed by 889
Abstract
Anoctamin1 (ANO1), a calcium-activated chloride channel, is overexpressed in a variety of cancer cells, including prostate cancer, and is involved in cancer cell proliferation, migration, and invasion. Inhibition of ANO1 in these cancer cells exhibits anticancer effects. In this study, we conducted a [...] Read more.
Anoctamin1 (ANO1), a calcium-activated chloride channel, is overexpressed in a variety of cancer cells, including prostate cancer, and is involved in cancer cell proliferation, migration, and invasion. Inhibition of ANO1 in these cancer cells exhibits anticancer effects. In this study, we conducted a screening to identify novel ANO1 inhibitors with anticancer effects using PC-3 human prostate carcinoma cells. Screening of 2978 approved and investigational drugs revealed that hemin is a novel ANO1 inhibitor with an IC50 value of 0.45 μM. Notably, hemin had no significant effect on intracellular calcium signaling and cystic fibrosis transmembrane conductance regulator (CFTR), a cyclic AMP (cAMP)-regulated chloride channel, and it showed a weak inhibitory effect on ANO2 at 3 μM, a concentration that completely inhibits ANO1. Interestingly, hemin also significantly decreased ANO1 protein levels and strongly inhibited the cell proliferation and migration of PC-3 cells in an ANO1-dependent manner. Furthermore, it strongly induced caspase-3 activation, PARP degradation, and apoptosis in PC-3 cells. These findings suggest that hemin possesses anticancer properties via ANO1 inhibition and could be considered for development as a novel treatment for prostate cancer. Full article
(This article belongs to the Special Issue Molecular Research on Prostate Cancer)
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Review

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13 pages, 448 KiB  
Review
Involvement of Reactive Oxygen Species in Prostate Cancer and Its Disparity in African Descendants
by Geou-Yarh Liou, Reauxqkwuanzyiia C’lay-Pettis and Sravankumar Kavuri
Int. J. Mol. Sci. 2024, 25(12), 6665; https://doi.org/10.3390/ijms25126665 - 17 Jun 2024
Cited by 1 | Viewed by 952
Abstract
Reactive oxygen species (ROS) participate in almost all disorders, including cancer. Many factors, including aging, a high-fat diet, a stressful lifestyle, smoking, infection, genetic mutations, etc., lead to elevated levels of ROS. Prostate cancer, the most prevalent type of cancer in senior American [...] Read more.
Reactive oxygen species (ROS) participate in almost all disorders, including cancer. Many factors, including aging, a high-fat diet, a stressful lifestyle, smoking, infection, genetic mutations, etc., lead to elevated levels of ROS. Prostate cancer, the most prevalent type of cancer in senior American men and the second leading cause of cancer mortality in American men, results from chronic oxidative stress. The doubled incident rate as well as the doubled mortality numbers of prostate cancer have persisted in African Americans in comparison with Caucasian Americans and other racial groups, indicating a prostate cancer disparity in African American men. In this review, we mainly focus on the latest findings on ROS in prostate cancer development and progression within the last five years to update our understanding in this area, as several comprehensive literature reviews addressing oxidative stress and/or inflammation in prostate cancer before 2020 are available. In addition to other known factors such as socioeconomic disadvantage, cultural mistrust of the health care system, etc. that are long-existing in the African American group, we also summarize the latest evidence that demonstrated high systemic oxidative stress and inflammation in African Americans for their potential contribution to the racial prostate cancer disparity in this population. Full article
(This article belongs to the Special Issue Molecular Research on Prostate Cancer)
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16 pages, 1196 KiB  
Review
Homologous Recombination Repair Deficiency in Metastatic Prostate Cancer: New Therapeutic Opportunities
by Claudia Piombino, Stefania Pipitone, Elena Tonni, Luciana Mastrodomenico, Marco Oltrecolli, Cyrielle Tchawa, Rossana Matranga, Sara Roccabruna, Elisa D’Agostino, Marta Pirola, Francesca Bacchelli, Cinzia Baldessari, Maria Cristina Baschieri, Massimo Dominici, Roberto Sabbatini and Maria Giuseppa Vitale
Int. J. Mol. Sci. 2024, 25(9), 4624; https://doi.org/10.3390/ijms25094624 - 24 Apr 2024
Viewed by 1333
Abstract
More than 20% of metastatic prostate cancer carries genomic defects involving DNA damage repair pathways, mainly in homologous recombination repair-related genes. The recent approval of olaparib has paved the way to precision medicine for the treatment of metastatic prostate cancer with PARP inhibitors [...] Read more.
More than 20% of metastatic prostate cancer carries genomic defects involving DNA damage repair pathways, mainly in homologous recombination repair-related genes. The recent approval of olaparib has paved the way to precision medicine for the treatment of metastatic prostate cancer with PARP inhibitors in this subset of patients, especially in the case of BRCA1 or BRCA2 pathogenic/likely pathogenic variants. In face of this new therapeutic opportunity, many issues remain unsolved. This narrative review aims to describe the relationship between homologous recombination repair deficiency and prostate cancer, the techniques used to determine homologous recombination repair status in prostate cancer, the crosstalk between homologous recombination repair and the androgen receptor pathway, the current evidence on PARP inhibitors activity in metastatic prostate cancer also in homologous recombination repair-proficient tumors, as well as emerging mechanisms of resistance to PARP inhibitors. The possibility of combination therapies including a PARP inhibitor is an attractive option, and more robust data are awaited from ongoing phase II and phase III trials outlined in this manuscript. Full article
(This article belongs to the Special Issue Molecular Research on Prostate Cancer)
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