330 results match your criteria: "Oncopathology Research Center.[Affiliation]"

Residual disease in NPM1-mutated acute myeloid leukemia.

Clin Chim Acta

September 2025

Department of Hematology and Blood Banking, School of Allied Medical Sciences, Iran University of Medical, Tehran, Iran. Electronic address:

Acute myeloid leukemia (AML) represents a genetically heterogeneous malignancy, with mutations in the nucleophosmin-1 (NPM1) gene identified as the most prevalent and clinically significant molecular biomarkers. These mutations play a crucial pivotal role in the realms of diagnosis, prognosis, and therapeutic decision-making. Although an ideal measurable residual disease (MRD) test has yet to be developed, there is increasing acknowledgment of the significance of advanced molecular methodologies for monitoring MRD in NPM1-mutated (NPM1) AML.

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Background: Placental-specific 1 (Plac1), with no expression in normal tissues, is expressed in different cancers. Therefore, the potential application of Plac1 to detect metastasis was investigated in breast cancer model.

Methods: A spontaneous metastasis model was established using 4T1 cells.

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Mpox, caused by the monkeypox virus (MPXV), re-emerged as a significant global health issue in 2024, resulting in the declaration of a second Public Health Emergency of International Concern (PHEIC). The emergence of Clade Ib in Central Africa, particularly affecting children and immunocompromised individuals, and the ongoing global spread of Clade IIb have raised concerns about increased transmissibility and virulence, potentially driven by accelerated APOBEC3-mediated viral mutations. Novel vaccination strategies include the licensed JYNNEOS and Japan's LC16 KMB, as well as promising mRNA vaccine candidates currently in clinical trials.

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Pancreatic cancer is a highly lethal malignancy, ranking tenth in incidence among all cancers and standing as the fourth leading cause of cancer-related mortality worldwide. This systematic review and meta-analysis evaluated the diagnostic performance of exosomal biomarkers for detecting pancreatic ductal adenocarcinoma (PDAC). A total of 1,666 records were identified through comprehensive searches in Scopus, Web of Science, and PubMed.

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Introduction: The COVID-19 pandemic significantly disrupted healthcare systems worldwide. Prioritizing emergency responses resulted in the postponement of routine medical care, including melanoma diagnoses. We performed a systematic review and meta-analysis to quantify the pandemic's effect on diagnosis rates, Breslow thickness, stage at presentation, ulceration, histologic subtypes, and patient age.

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Gastrointestinal (GI) cancers remain among the leading causes of cancer-related morbidity and mortality worldwide. Despite advancements in conventional therapies, the prognosis for patients with GI malignancies remains suboptimal, often due to therapy resistance and adverse side effects. Consequently, there is a pressing need to explore novel, effective, and safer therapeutic agents.

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Cervical cancer (CC) poses a significant global health challenge, necessitating the development of novel therapeutic strategies. The interplay between the p63 isoform (ΔNp63), microRNA-141-3p (miR-141-3p), and Yes-associated protein 1 (YAP1) has emerged as a potential area of interest in cancer progression. This study aimed to investigate the functional relationship between the between the p63 isoform (ΔNp63), miR-141-3p and YAP1 in modulating migration, invasion, and epithelial-mesenchymal transition (EMT) in two CC cell lines, CaSki, and HeLa, which are human cervical squamous cell carcinoma (SCC) and adenocarcinoma (ADC) cells, respectively.

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Background: Pancreatic ductal adenocarcinoma (PDAC) has a poor prognosis and most patients are diagnosed at a stage where the disease is unresectable, locally advanced, or has already metastasized. Invasive pancreatic cancer is believed to arise through a progression of noninvasive ductal lesions referred to as pancreatic intraepithelial neoplasia (PanIN). The mechanisms driving the transition from PanIN, to invasive PDAC are not fully understood.

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Acute myeloid leukemia (AML) is an aggressive malignancy with limited treatment options. Enhancing natural killer (NK) cell functionality through artificial antigen-presenting cells (aAPCs) represents a promising immunotherapeutic strategy. This study evaluates the potential of genetically modified K562 cells, expressing CD137L and CD86, to enhance NK cell-mediated cytotoxicity against AML cell lines (HL-60, KG-1, and THP-1).

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Background: The tumor microenvironment (TME), particularly the extracellular matrix (ECM), plays a crucial role in regulating breast cancer progression. Among ECM components, collagen type I-accounting for over 90% of fibrillar collagen in the human body-is the primary structural component of the tumor ECM. It critically modulates tumor cell behavior, influencing migration, invasion, and therapy resistance.

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Cancer stem cells (CSCs) as a subgroup of cells within a tumor capable of self-renewal, thereby driving tumor initiation and spread. Addressing treatment failures in cancer, linked to CSCs and their resistance mechanisms, requires effective preclinical models for testing targeted therapies. Caco2- and HT-29-resistant cells were generated by repeated treatment of cells with growing concentrations of 5-fluorouracil (5-FU) anticancer drug for an extended time.

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The overexpression of tumor markers within Extracellular Vesicles (EVs), particularly in tumor-derived exosomes (TDEs), plays a pivotal role in metastasis in the context of colorectal cancer (CRC). Nonetheless, the precise role of EV content in CRC diagnosis and prognosis necessitates extensive validation through bioinformatics and clinical investigations. We explored molecular markers shared between TDEs and circulating tumor cells (CTCs) in the blood of cancer patients to identify candidate genes involved in metastasis.

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Introduction: DNA damage-inducible transcript 4 (DDIT4), also known as Redd1, Dig2, and RTP801 was identified to be upregulated in response to a variety of cellular stresses, including DNA damage, endoplasmic reticulum stress, and energy stress. Several studies have discovered that dysregulation of DDIT4 involved in various cancers with paradoxical expression and roles. Hence, this study was designed to investigate the clinical significance and prognostic value of DDIT4 in different subtypes of gastric cancer (GC).

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BackgroundDoublecortin-like kinase 1 (DCLK1) isoforms play distinct roles in the progression of gastrointestinal cancers. For the first time ever, the current study aimed to generate DCLK1-S-specific monoclonal antibodies (mAbs) to evaluate the clinical value of DCLK1-S (short isoform) in gastric cancer (GC).Materials and methodsMice were immunized with a unique 7-mer synthetic peptide of DCLK1-S conjugated with keyhole limpet hemocyanin (KLH).

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Self-replicating nanomaterials as a new generation of smart nanostructures.

Biotechnol Adv

May 2025

Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran; Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran; Cellular and Molecular Research Center, Iran U

Self-replication is the process by which a system or entity autonomously reproduces or generates copies of itself, transmitting hereditary information through its molecular structure. Self-replication can be attractive for various researchers, ranging from biologists focused on uncovering the origin of life, to synthetic chemists and nanotechnologists studying synthetic machines and nanorobots. The capability of a single structure to act as a template to produce multiple copies of itself could allow the bottom-up engineering of progressively complex reaction networks and nanoarchitectures from simple building blocks.

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Cancer metastasis is a complicated biological process that critically affects cancer progression, patient outcomes, and treatment plans. A significant step in metastasis is the formation of a pre-metastatic niche (PMN). A small subset of cells within tumors, known as cancer stem cells (CSCs), possess unique characteristics including, differentiation into different cell types within the tumor, self-renewal, and resistance to conventional therapies, that enable them to initiate tumors and drive metastasis.

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Cutaneous melanoma, one of the most fatal and aggressive types of skin cancer, is a malignant tumor created from pigment-producing cells called melanocytes. The mor-bidity and incidence rate of melanoma are increasing around the world. Considering all developments in diagnostic and therapeutic approaches, early diagnosis and more effective targeted therapies are still urgent for melanoma.

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Introduction: DNA damage-inducible transcript 4 (DDIT4), induced under cellular stress conditions, has been implicated in malignancies due to its abnormal expression patterns.

Materials And Methods: The expression of DDIT4 at the mRNA level and its potential role as a prognostic biomarker in gliomas were analyzed using the GEPIA tool. To validate these findings, DDIT4 protein expression levels and their prognostic significance were examined in tissue microarrays from glioma patients using immunohistochemistry in clinical samples.

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Background: Gastric cancer (GC) poses significant challenges globally, ranking fifth in incidence and fourth in cancer-related mortality. SALL4, a stem cell transcription factor with multiple isoforms, includes SALL4-A as its full-length form. This study aims to evaluate the diagnostic potential of SALL4-A isoform expression in GC and its clinical significance.

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Crosstalk between non-coding RNAs and programmed cell death in colorectal cancer: implications for targeted therapy.

Epigenetics Chromatin

January 2025

Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.

Background: Colorectal cancer (CRC) remains one of the most common causes of cancer-related mortality worldwide. Its progression is influenced by complex interactions involving genetic, epigenetic, and environmental factors. Non-coding RNAs (ncRNAs), including microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs), have been identified as key regulators of gene expression, affecting diverse biological processes, notably programmed cell death (PCD).

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Despite significant advancements in gene delivery and CRISPR technology, several challenges remain. Chief among these are overcoming serum inhibition and achieving high transfection efficiency with minimal cytotoxicity. To address these issues, there is a need for novel vectors that exhibit lower toxicity, maintain stability in serum-rich environments, and effectively deliver plasmids of various sizes across diverse cell types.

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Recent interest has been focused on extracellular matrix (ECM)-based scaffolds totreat critical-sized bone injuries. In this study, urea was used to decellularize and solubilize human placenta tissue. Then, different concentrations of ECM were composited with 8% alginate (Alg) and 12% silk fibroin (SF) for printing in order to produce a natural 3D construct that resembled bone tissue.

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Melanoma antigen gene-A2 (MAGE-A2) is one of the most cancer-testis antigens overexpressed in a variety of malignancies. However, the expression of MAGE-A2 for clinical values in the pathophysiology of renal cell carcinoma (RCC) is unknown. For the first time, the present study was conducted to examine the expression and prognostic significance of MAGE-A2 expression in clear cell RCC (ccRCC).

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