Ranran Yang^1,2,3,#, Dan Yuan^2,#, Chaohan Liang^4,#, Siying Zhu⁴, Jie Huang², Yingqi Zhang⁴, Weiling He⁵, Qinghai Li^1,*, Hong Zhang^2,*

Oncology Research, Vol.33, No.12, pp. 3945-3971, 2025, DOI:10.32604/or.2025.064463 - 27 November 2025

Abstract Background: Colorectal cancer (CRC) is a predominant contributor to global cancer-associated mortality worldwide. Oxaliplatin (OXP), a foundational chemotherapeutic agent for CRC, often exhibits limited efficacy due to the emergence of drug resistance. Although endothelin-1 (EDN1) has been implicated in tumor drug resistance, its role in oxaliplatin resistance in CRC remains poorly defined. This work aimed to define how EDN1 contributes to oxaliplatin resistance and to explore its potential as a therapeutic target. Methods: Public genomic datasets were analyzed to confirm EDN1 upregulation in colorectal cancer (CRC) and its association with poor prognosis. EDN1 expression was… More >

Russel J. Reiter^1,*, Ramaswamy Sharma^2,*, Walter Manucha³, Walter Balduini⁴, Doris Loh⁵, Demetrios A. Spandidos⁶, Alejandro Romero⁷, Vasiliki E. Georgakopoulou⁸, Wei Zhu⁹

BIOCELL, Vol.49, No.11, pp. 2033-2067, 2025, DOI:10.32604/biocell.2025.067661 - 24 November 2025

Abstract The development of cancer cell resistance to conventional treatments continues to be a major obstacle in the successful treatment of tumors of many types. The discovery of a highly efficient direct and indirect free radical scavenger, melatonin, in the mitochondrial matrix may be a factor in determining both the occurrence of cancer cell drug insensitivity as well as radioresistance. This relates to two of the known hallmarks of cancer, i.e., exaggerated free radical generation in the mitochondria and the development of Warburg type metabolism (glycolysis). The hypothesis elaborated in this report assumes that the high… More >

Jingcheng Lyu^1,2,#, Ruiyu Yue^1,2,#, Yichen Zhu^1,2, Ye Tian^1,2,*, Xinyi Hu^1,2,*

Canadian Journal of Urology, Vol.32, No.5, pp. 411-422, 2025, DOI:10.32604/cju.2025.066758 - 30 October 2025

Abstract Objective: Urothelial carcinoma (UC) remains a prevalent malignancy with high recurrence and chemoresistance rates despite gemcitabine-cisplatin (GC) chemotherapy. The study aimed to identify clinical risk factors for chemoresistance in advanced UC patients and develop a predictive model. Method: A retrospective analysis was conducted on 375 UC patients who received postoperative GC chemotherapy between 2013 and 2024. Patients were categorized into chemotherapy-resistant (CR, n = 91) and non-chemotherapy resistant (NCR, n = 284) groups based on tumor progression. Clinical, pathological, and laboratory variables were compared using t-tests and chi-square tests. Kaplan-Meier assessed overall survival (OS), and binary More >

MOEKA NAKASHIMA, NAOKO SUGA, AKARI FUKUMOTO, SAYURI YOSHIKAWA, SATORU MATSUDA^*

Oncology Research, Vol.33, No.5, pp. 1007-1017, 2025, DOI:10.32604/or.2025.059657 - 18 April 2025

Abstract Malignant tumors are heterogeneous diseases characterized by uncontrolled cell proliferation, invasion, metastasis, and/or recurrence of their malignancies. In particular, cancer stem cells (CSCs) within these tumors might be responsible for the property of invasiveness and/or therapies-resistance. CSCs are a self-renewing, awfully tumorigenic subpopulation of cancer cells, which are notorious for strong chemoresistance and are frequently responsible the aggravated invasion, metastasis, and/or recurrence. Developing targeting therapies against CSCs, therefore, may be deliberated a more encouraging mission for the greater cancer therapy. Innovation for a more potent anti-CSC treatment has been required as soon as possible.… More > Graphic Abstract

LUIZ FERNANDO LOPES SILVA^1,#, JULIETE NATHALI SCHOLL^1,#, AUGUSTO FERREIRA WEBER¹, CAMILA KEHL DIAS¹, PAULINE RAFAELA PIZZATO², VINíCIUS PIERDONá LIMA¹, JEAN SÉVIGNY^3,4, ANA MARIA OLIVEIRA BATTASTINI¹, FABRÍCIO FIGUEIRÓ^1,2,*

Oncology Research, Vol.33, No.4, pp. 951-964, 2025, DOI:10.32604/or.2024.055508 - 19 March 2025

Abstract Objectives: Glioblastoma (GB) is a grade IV glial tumor characterized by high malignancy and dismal prognosis, primarily due to high recurrence rates and therapeutic resistance. The epidermal growth factor receptor (EGFR), a receptor tyrosine kinase (RTK), regulates signaling pathways, including cell growth, proliferation, survival, migration, and cell death. Many cancers utilize immune checkpoints (ICs) to attenuate immune responses. CD73 is an enzyme that functions as an IC by hydrolyzing AMP to adenosine, suppressing immune cells in the tumor microenvironment. However, the role of CD73 in resistance to EGFR inhibitors is poorly understood. This study aims… More >

CHUAN JIANG^1,2, CHUNLEI LIU^1,3, XI YAO^1,3, JINGYA SU^1,2, WEI LU^1,3, ZHENGBO WEI^3,*, YING XIE^1,2,*

Oncology Research, Vol.32, No.12, pp. 1935-1948, 2024, DOI:10.32604/or.2024.052244 - 13 November 2024

Abstract Background: Head and neck squamous cell carcinoma (HNSCC) is a prevalent form of cancer globally, with chemoresistance posing a major challenge in treatment outcomes. The efficacy of the commonly used chemotherapeutic agent, cisplatin, is diminished in patients with poor prognoses. Methods: Various bioinformatics databases were utilized to examine Carboxylesterase 1 (CES1) gene expression, clinicopathologic features, patient survival analysis, and gene function. An organoid model of HNSCC was established, along with the induction of drug-resistant HNSCC in the organoid model. CES1 expression was assessed using qRT-PCR and Western Blot, and differential markers were identified through transcriptome… More >

SHAN JIANG^1,2, XIUFENG LIN², YANFEI CHEN³, XINNING LI³, JIALI KANG^1,4,*

BIOCELL, Vol.48, No.8, pp. 1265-1273, 2024, DOI:10.32604/biocell.2024.051478 - 02 August 2024

Abstract Background: Despite improvements in objective response rates to cisplatin-based combination chemotherapy, the majority of advanced ovarian cancer remains suboptimal, resulting in poor survival. it has been found that non-coding RNAs (ncRNAs) not only participate in the transmission of signals between various cells but also participate in tumor immunity and anti-tumor immune responses, thereby regulating tumor occurrence and development. However, the function and detailed mechanism of ultraconserved RNA (ucRNA) in ovarian cancer chemoresistance is still unclear. Methods: Western blotting assay, Quantitative real-time PCR analysis (qPCR), and Kaplan-Meier Plotter analysis were performed to analyze the expression and prognosis… More >

RUOYU CHEN¹, YIMAN WU¹, FENG WANG¹, JUNTAO ZHOU¹, HUAZHANG ZHUANG¹, WEI LI^2,*

BIOCELL, Vol.48, No.7, pp. 1037-1046, 2024, DOI:10.32604/biocell.2024.051074 - 03 July 2024

Abstract Background: Oleanolic acid (OA), a pentacyclic triterpenoid exhibiting specific anti-cancer properties and highly effective antioxidant activity, was isolated from traditional Chinese medicinal herbs. Conversely, the OA that impacts colon cancer (CC) cells and its underlying mechanisms remain poorly understood. Methods: The cytotoxic effect of OA alone or OA-5-Fluorouracil (5-FU) combination on normal and CC cells was analyzed by methyl thiazolyl diphenyl-tetrazolium bromide (MTT). Then, the impact of OA on CC cell lines (LoVo and HT-29) proliferation and stemness were measured using colon formation and tumorsphere formation assays. Octamer-binding transcription factor 4 (Oct4), Prominin-1 (CD133), Nanog,… More >

XIA DA¹, HAN GE², JUNFENG SHI³, CHUNHUA ZHU¹, GUOZHU WANG¹, YUAN FANG^4,*, JIN XU^1,*

Oncology Research, Vol.32, No.7, pp. 1209-1219, 2024, DOI:10.32604/or.2024.045433 - 20 June 2024

Abstract Objective: This study aimed to investigate the role of receptor tyrosine kinase-like orphan receptor 2 (ROR2) in triple-negative breast cancer (TNBC). Methods: ROR2 expression in primary TNBC and metastatic TNBC tissues was analyzed by immunohistochemical staining and PCR. ROR2 expression in TNBC cell lines was detected by PCR and Western blot analysis. The migration, invasion and chemosensitivity of TNBC cells with overexpression or knockdown of ROR2 were examined. Results: ROR2 expression was high in metastatic TNBC tissues. ROR2 knockdown suppressed the migration, invasion and chemoresistance of TNBC cells. ROR2 overexpression in MDA-MB-435 cells promoted the migration, More >

KIMBERLY FENECH¹, ISAAC MICALLEF^1,2, BYRON BARON^1,*

Oncology Research, Vol.32, No.6, pp. 1047-1061, 2024, DOI:10.32604/or.2024.049173 - 23 May 2024

Abstract Background: Colorectal cancer (CRC) is one of the most frequently diagnosed cancers. In many cases, the poor prognosis of advanced CRC is associated with resistance to treatment with chemotherapeutic drugs such as 5-Fluorouracil (5-FU). The epithelial-to-mesenchymal transition (EMT) and dysregulation in protein methylation are two mechanisms associated with chemoresistance in many cancers. This study looked into the effect of 5-FU dose escalation on EMT and protein methylation in CRC. Materials and Methods: HCT-116, Caco-2, and DLD-1 CRC cell lines were exposed to dose escalation treatment of 5-FU. The motility and invasive potentials of the cells before… More > Graphic Abstract