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MiR-203a-3p regulates the biological behaviors of ovarian cancer cells through mediating the Akt/GSK-3β/Snail signaling pathway by targeting ATM.

ObjectiveTo investigate whether miR-203a-3p can regulate the biological behaviors of ovarian cancer cells by targeting ATM to affect the Akt/GSK-3β/Snail signaling pathway.MethodsThe expression levels of miR-203a-3p and ATM were detected by qRT-PCR, immunohistochemical staining and Western blotting in ovarian cancer tissues and adjacent normal tissues obtained from 152 subjects. A dual-luciferase reporter gene assay was performed to verify the relationship between miR-203a-3p and ATM. Human ovarian cancer cell lines (A2780 and SKOV3) were used to generate the Blank, miR-NC, miR-203a-3p mimic,

Mechanisms of T-cell Depletion in Tumors and Advances in Clinical Research.

T lymphocytes (T cells) are essential components of the adaptive immune system that play a vital role in identifying and eliminating infected and tumor cells. In tumor immunotherapy, T cells have emerged as a promising therapeutic strategy due to their high specificity, potent cytotoxic capability, long-lasting immune memory, and adaptability within immunotherapeutic approaches. However, tumors can evade the immune system by depleting T cells through various mechanisms, such as inhibitory receptor signaling, metabolic exhaustion, and physical barriers within the tumor microenvironment. This re

Модулы воздействия на организм человека, связанные с болезнями, связанными с имммуном.

Бисфенол А (БПА), используемый в поликарбонатных пластмассах и эпоксидных смолах, имеет широкое воздействие на человека. ПБВ вызывает озабоченность в связи с воздействием на развитие, которое приводит к иммуномодуляции и развитию болезней в силу ее способности пересекать плацентальный барьер и присутствовать в материнском молоке. БПА может использовать различные механизмы для модуляции иммунной системы и воздействия на болезни, включая агонистическое и антагонистическое воздействие на многие рецепторы (например, эстрогенные рецепторы), эпигенетические модификации, действие на пути клеточного с

Tumor Biology Hides Novel Therapeutic Approaches to Diffuse Large B-Cell Lymphoma: A Narrative Review.

Diffuse large B-cell lymphoma (DLBCL) is a malignancy of immense biological and clinical heterogeneity. Based on the transcriptomic or genomic approach, several different classification schemes have evolved over the years to subdivide DLBCL into clinically (prognostically) relevant subsets, but each leaves unclassified samples. Herein, we outline the DLBCL tumor biology behind the actual and potential drug targets and address the challenges and drawbacks coupled with their (potential) use. Therapeutic modalities are discussed, including small-molecule inhibitors, naked antibodies, antibody-dru

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… methylation [ 164 ]. … The “readers” are proteins that specifically recognize modified RNA and stabilize its methylation sites, thus influencing the splicing, stability, or translation of modified RNAs [ 165 , 166 ]. m6A type RNA methylation is involved in the metabolic reprogramming of tumor cells [ 167 ]. …

N-Methyl Pyrrolidone (NMP) Alleviates Lipopolysaccharide (LPS)-Induced Inflammatory Injury in Articular Chondrocytes.

BACKGROUND Studies on the chondrocyte inflammatory injury are very important for understanding the pathogenesis and clinical treatment of osteoarthritis (OA). Evidence suggests that N-methyl pyrrolidone (NMP) may be used as an adjuvant therapy alongside established methods of OA treatment. This study investigated the effect of NMP on chondrocyte inflammatory injury and explored the underlying molecular mechanism. MATERIAL AND METHODS To mimic the inflammatory injury in vitro, the articular chondrocyte line ATDC5 was simulated with lipopolysaccharide (LPS). ATDC5 cells were treated with various

Aptamer Therapeutics in Cancer: Current and Future.

Aptamer-related technologies represent a revolutionary advancement in the capacity to rapidly develop new classes of targeting ligands. Structurally distinct RNA and DNA oligonucleotides, aptamers mimic small, protein-binding molecules and exhibit high binding affinity and selectivity. Although their molecular weight is relatively small-approximately one-tenth that of monoclonal antibodies-their complex tertiary folded structures create sufficient recognition surface area for tight interaction with target molecules. Additionally, unlike antibodies, aptamers can be readily chemically synthesize

The role of piRNAs in predicting and prognosing in cancer: a focus on piRNA-823 (a systematic review and meta-analysis).

IntroductionThis article examines the potential of using liquid biopsy with piRNAs to study cancer survival outcomes. While previous studies have explored the relationship between piRNA expression and cancer patient outcomes, a comprehensive investigation is still lacking. To address this gap, we conducted a systematic review and meta-analysis of existing literature.MethodsWe searched major online databases up to February 2024 to identify articles reporting on the role of piRNA in cancer patient survival outcomes. Our meta-analysis used a random-effects model to pool hazard ratios with 95% con

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… Han H Fan G Song S Jiang Y Qian C Zhang W piRNA-30473 contributes to tumorigenesis and poor prognosis by regulating m6A RNA methylation in DLBCL Blood 2021 137 12 1603 1614 10.1182/blood.2019003764 32967010 42. …

Molecular Targeting and Rational Chemotherapy in Acute Myeloid Leukemia.

Acute myeloid leukemia (AML) is a molecularly complex disease with multiple aberrant genetic pathways involved in its pathogenesis. Approximately one-third to one-half of patients with AML would relapse, and no standard therapy is established for relapsing and/or refractory AML (RR-AML) yet. It is unlikely that blockage of only one specific pathway will lead to prolonged remissions and cures in all fractions of the AML patients population. Nowadays, novel therapeutic agents with rational combination are being recognized which improve the cure rate for relapsed AML. These drugs and their metabo

Application of the CRISPR/Cas9-based gene editing technique in basic research, diagnosis, and therapy of cancer.

The 2020 Nobel Prize in Chemistry was awarded to Emmanuelle Charpentier and Jennifer Doudna for the development of the Clustered regularly interspaced short palindromic repeats/CRISPR-associated nuclease9 (CRISPR/Cas9) gene editing technology that provided new tools for precise gene editing. It is possible to target any genomic locus virtually using only a complex nuclease protein with short RNA as a site-specific endonuclease. Since cancer is caused by genomic changes in tumor cells, CRISPR/Cas9 can be used in the field of cancer research to edit genomes for exploration of the mechanisms of t

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… Latest, Wilson et al. developed a targeted RNA methylation (TRM) system based on the RNA-targeting ability of CRISPR/Cas13 in combination with RNA methyltransferases generated m6A. … Fluorescence in situ hybridization Chimeric antigen receptor T cell Acute lymphoblastic leukemia Cytokine release syndrome Hepatitis B virus Hepatitis C virus Human papillomavirus Epstein-Barr virus Francisella novicida Cas9 Non-small-cell lung cancer Patient-derived xenograft Targeted RNA …

Proceedings of International Conference on Cell Death in Cancer and Toxicology. February 20-22, 2018. Guest Editors: Kausar M. Ansari, CSIR-IITR, India and Dhyan Chandra, Roswell Park, USA.

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Interleukin-1 Beta-A Friend or Foe in Malignancies?

Interleukin-1 beta (IL-1β) is induced by inflammatory signals in a broad number of immune cell types. IL-1β (and IL-18) are the only cytokines which are processed by caspase-1 after inflammasome-mediated activation. This review aims to summarize current knowledge about parameters of regulation of IL-1β expression and its multi-facetted role in pathophysiological conditions. IL-1 signaling activates innate immune cells including antigen presenting cells, and drives polarization of CD4+ T cells towards T helper type (Th) 1 and Th17 cells. Therefore, IL-1β has been attributed a largely beneficial

Translational Bioinformatics Applied to the Study of Complex Diseases.

Translational Bioinformatics (TBI) is defined as the union of translational medicine and bioinformatics. It emerges as a major advance in science and technology by covering everything, from the most basic database discoveries, to the development of algorithms for molecular and cellular analysis, as well as their clinical applications. This technology makes it possible to access the knowledge of scientific evidence and apply it to clinical practice. This manuscript aims to highlight the role of TBI in the study of complex diseases, as well as its application to the understanding and treatment o

Next generation sequencing: new tools in immunology and hematology.

One of the hallmarks of the adaptive immune system is the specificity of B and T cell receptors. Thanks to somatic recombination, a large repertoire of receptors can be generated within an individual that guarantee the recognition of a vast number of antigens. Monoclonal antibodies have limited applicability, given the high degree of diversity among these receptors, in BCR and TCR monitoring. Furthermore, with regard to cancer, better characterization of complex genomes and the ability to monitor tumor-specific cryptic mutations or translocations are needed to develop better tailored therapies

Oncogenic influences of neurotrophin receptors: Shedding light on Trk biology.

During critical stages of neurodevelopment, tropomyosin receptor kinase receptors, encoded by NTRK genes, exhibit temporally driven differential peaks of expression to properly guide the establishment of the peripheral and central nervous systems. In addition, these neuronal systems exhibit non-canonical regulation of surrounding tissues, impacting organogenesis, homeostasis, plasticity, and regeneration. The same processes that guide neurodevelopment, such as differentiation, plasticity, and neuronal survival, are also hijacked in cancer, making the NTRK family an ideal candidate to study. Th

Epigenetic Mechanisms in DNA Double Strand Break Repair: A Clinical Review.

Upon the induction of DNA damage, the chromatin structure unwinds to allow access to enzymes to catalyse the repair. The regulation of the winding and unwinding of chromatin occurs via epigenetic modifications, which can alter gene expression without changing the DNA sequence. Epigenetic mechanisms such as histone acetylation and DNA methylation are known to be reversible and have been indicated to play different roles in the repair of DNA. More importantly, the inhibition of such mechanisms has been reported to play a role in the repair of double strand breaks, the most detrimental type of DN

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… The Old and the New: DNA and RNA Methylation in Normal and Malignant Hematopoiesis. Exp. Hematol. 90 (October), 1–11. 10.1016/j.exphem.2020.09.193 Guo L., Lee Y.-T., Zhou Y., Huang Y. (2021). Targeting Epigenetic Regulatory Machinery to Overcome Cancer Therapy Resistance. Semin. …

The functional role of long noncoding RNA in resistance to anticancer treatment.

Chemotherapy is one of the fundamental methods of cancer treatment. However, drug resistance remains the main cause of clinical treatment failure. We comprehensively review the newly identified roles of long noncoding RNAs (lncRNAs) in oncobiology that are associated with drug resistance. The expression of lncRNAs is tissue-specific and often dysregulated in human cancers. Accumulating evidence suggests that lncRNAs are involved in chemoresistance of cancer cells. The main lncRNA-driven mechanisms of chemoresistance include regulation of drug efflux, DNA damage repair, cell cycle, apoptosis, e

DNA methyltransferase inhibitors in hematological malignancies and solid tumors.

Epigenetic modifications such as DNA methylation play a fundamental role in oncogenesis and the progression of neoplasms neoplasias. DNA methyltransferase inhibitors (DNMTi) constitute a family of therapeutic agents that impede the methylation at the 5-position on cytosine nucleotides, thereby modulating the epigenetic regulation of tumor suppressor genes, oncogenes, and other key regulatory genes. The first-generation DNMTi azacitidine and decitabine have demonstrated substantial efficacy in the treatment of medically non-fit, older patients with acute myeloid leukemia (AML) or myelodysplasti

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… Azacytidine inhibits RNA methylation at DNMT2 target sites in human cancer cell lines. Cancer Res. 2009;69(20):8127‐8132. 13. Stomper J, Rotondo JC, Greve G, Lübbert M. …

H3 histone methylation landscape in male urogenital cancers: from molecular mechanisms to epigenetic biomarkers and therapeutic targets.

During the last decades, male urogenital cancers (including prostate, renal, bladder and testicular cancers) have become one of the most frequently encountered malignancies affecting all ages. While their great variety has promoted the development of various diagnosis, treatment and monitoring strategies, some aspects such as the common involvement of epigenetic mechanisms are still not elucidated. Epigenetic processes have come into the spotlight in the past years as important players in the initiation and progression of tumors, leading to a plethora of studies highlighting their potential as

Advances and Challenges in Cervical Cancer: From Molecular Mechanisms and Global Epidemiology to Innovative Therapies and Prevention Strategies.

BackgroundIn the global scenario of public health, cervical cancer poses a major threat with high mortality rates, especially in women. New incidence cases and prevalence vary across different regions, as recently shown by GLOBOCAN data. The development of cervical cancer is primarily due to persistent infection by high-risk genotypes of human papillomavirus (HPV), which is a multifaceted process that is influenced by genetic, environmental, and lifestyle factors.PurposeThe goal of this study is to thoroughly investigate cervical cancer, including its etiology, molecular mechanisms, progressio

Bone Marrow Mesenchymal Stromal Cells in Multiple Myeloma: Their Role as Active Contributors to Myeloma Progression.

Multiple myeloma (MM) is a hematological malignancy of plasma cells that proliferate and accumulate within the bone marrow (BM). Work from many groups has made evident that the complex microenvironment of the BM plays a crucial role in myeloma progression and response to therapeutic agents. Within the cellular components of the BM, we will specifically focus on mesenchymal stromal cells (MSCs), which are known to interact with myeloma cells and the other components of the BM through cell to cell, soluble factors and, as more recently evidenced, through extracellular vesicles. Multiple structur