Sustained proliferation in cancer: Mechanisms and novel therapeutic targets

Unraveling the kinase code: Role of protein kinase in lung cancer pathogenesis and therapeutic strategies

Lung cancer is a prominent cause of cancer-related deaths globally, prompting exploration into the molecular pathways governing cancer cell signaling. Recent insights highlight the critical role of kinases in carcinogenesis and metastasis, particularly in non-small cell lung cancer (NSCLC), where protein kinases significantly contribute to drug resistance. These diverse enzymes catalyze protein phosphorylation and are implicated in cancer through misregulated expression, amplification, aberrant phosphorylation, mutations, and chromosomal translocations. Amplifications of kinases serve as important diagnostic, prognostic, and predictive biomarkers across various cancers. Notably, the Phosphatidylinositol 3-kinase (PI3K)/AKT pathway is crucial for the survival and proliferation of tumor cells. Novel therapeutic approaches are being explored to precisely target these pathways. Peptide-based therapies offer specificity and reduced toxicity compared to conventional treatments, while gene therapy targets abnormal genetic expressions. Advances in nanotechnology and CRISPR/Cas9 systems enhance gene delivery methods, holding promise for targeting specific molecular pathways in lung cancer treatment and minimizing systemic toxicity.

Tilianin regulates the proliferation, invasion and tumor immune microenvironment of thyroid cancer cells through the TLR4/NF-κB axis

Thyroid cancer is the most prevalent form of endocrine malignancy. Tilianin has demonstrated anti-tumor properties in ovarian cancer and non-small cell lung cancer (NSCLC), while its effects on thyroid cancer progression remain elusive. Hence, this research explored the role of Tilianin in thyroid cancer development and clarified the underlying mechanisms. The findings indicated that Tilianin reduced cell viability of TPC-1 (IC50 = 38.97 μM) and IHH4 (IC50 = 27.69 μM) cells dose-dependently and inhibited the expression of Ki-67. Additionally, Tilianin impaired the invasion capacity of TPC-1 and IHH4 cells, decreased the PD-L1 level, strengthened the CD8+T cell viability, and elevated the secretions of IFN-γ, IL-2, and TNF-α in CD8+T cells. Furthermore, Tilianin could suppress the activation of the TLR4/NF-κB pathway. The inhibitory effects of Tilianin on TPC-1 cell proliferation, invasion, and immune escape were reversed by overexpression of TLR4. In vivo, oral administration of Tilianin restrained thyroid cancer tumor growth, reduced the levels of Ki-67, PD-L1, TLR4, and p-NF-κB, and increased CD8+ T cell levels. In summary, Tilianin effectively restrained thyroid cancer cell proliferation, invasion, and tumor immune microenvironment through inactivating the TLR4/NF-κB pathway.

Tumor microenvironment governs the prognostic landscape of immunotherapy for head and neck squamous cell carcinoma: A computational model-guided analysis

Immune checkpoint inhibition (ICI) has emerged as a critical treatment strategy for squamous cell carcinoma of the head and neck (HNSCC) that halts the immune escape of the tumor cells. Increasing evidence suggests that the onset, progression, and lack of/no response of HNSCC to ICI are emergent properties arising from the interactions within the tumor microenvironment (TME). Deciphering how the diversity of cellular and molecular interactions leads to distinct HNSCC TME subtypes subsequently governing the ICI response remains largely unexplored. We developed a cellular-molecular model of the HNSCC TME that incorporates multiple cell types, cellular states, and transitions, and molecularly mediated paracrine interactions. Simulation across the selected parameter space of the HNSCC TME network shows that distinct mechanistic balances within the TME give rise to the five clinically observed TME subtypes such as immune/non-fibrotic, immune/fibrotic, fibrotic only and immune/fibrotic desert. We predict that the cancer-associated fibroblast, beyond a critical proliferation rate, drastically worsens the ICI response by hampering the accessibility of the CD8 + killer T cells to the tumor cells. Our analysis reveals that while an Interleukin-2 (IL-2) + ICI combination therapy may improve response in the immune desert scenario, Osteopontin (OPN) and Leukemia Inhibition Factor (LIF) knockout with ICI yields the best response in a fibro-dominated scenario. Further, we predict Interleukin-8 (IL-8), and lactate can serve as crucial biomarkers for ICI-resistant HNSCC phenotypes. Overall, we provide an integrated quantitative framework that explains a wide range of TME-mediated resistance mechanisms for HNSCC and predicts TME subtype-specific targets that can lead to an improved ICI outcome.

Targeting KRAS-G12C in lung cancer: The emerging role of PROTACs in overcoming resistance

In lung cancer, KRAS mutations, especially the G12C, favor aggressive tumor growth and resistance to standard therapies. Although first-generation inhibitors of KRAS G12C, such as sotorasib and adagrasib, are highly effective in early-phase studies, resistance invariably develops under selective inhibition pressure and rarely leads to sustained long-term treatment benefits. As a novel approach to targeting KRAS mutations in lung cancer, PROTAC (Proteolysis Targeting Chimera) technology is explored in this review. The PROTACs take advantage of the cell's ubiquitin-proteasome system to selectively degrade KRAS proteins, overcoming the dilemma of a lack of traditional binding sites and the means of resistance. We review recent progress with KRAS-specific PROTACs and their mechanisms, clinical application, and effectiveness at targeting primary KRAS oncogenes and secondary drivers and signaling pathways contributing to therapeutic resistance. Also, the synergies between PROTACs and immunotherapies or chemotherapies are further amplified. This review also underscores PROTAC technology's promise to advance precision medicine by providing durable treatment options for KRAS-driven lung cancers. It addresses future directions for optimizing PROTAC efficacy, bioavailability, and patient-specific applications.

Analysis of metabolic compounds and antitumorigenic effects of Albizia niopoides and Senegalia polyphylla leaves

The objective of this study was to quantify metabolic compounds in leaves of A. niopoides and S. polyphylla and to evaluate the antitumor potential of extracts from both species in cervical tumour cells. The physiological analyses performed were quantification of starch, sucrose, phenolic compounds and proteins. An aqueous extract was prepared and added to the SiHa cell line at concentrations of 10, 100 and 1000 μg/mL at 4h, 24h, 48h and 72h. Cell morphology, proliferation and viability were analysed. The species showed a large amount of starch and phenolic compounds. Treatment with the extract of both species caused morphological changes in SiHa cells and exhibited antiproliferative effects at a concentration of 1000 µg/ml. In cell viability test, only A. niopoides showed a significant reduction. The study presented the effects of the species against a cervical cancer cell line, where A. niopoides has already shown to be a promising plant drug.

The PI3K/Akt pathway: a target for curcumin's therapeutic effects

Purpose

The purpose of this review study is to investigate the effect of curcumin on the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway in various diseases. Curcumin, the main compound found in turmeric, has attracted a lot of attention for its diverse pharmacological properties. These properties have increased the therapeutic potential of curcumin in chronic diseases such as cardiovascular disease, Type 2 diabetes, obesity, non-alcoholic fatty liver disease, kidney disease, and neurodegenerative diseases. One of the main mechanisms of the effect of curcumin on health is its ability to modulate the PI3K/Akt signaling pathway. This pathway plays an important role in regulating vital cellular processes such as growth, cell survival, metabolism, and apoptosis. Disruption of the PI3K/Akt signaling pathway is associated with the incidence of several diseases.

Methods

Electronic databases including PubMed, Google Scholar, and Scopus were searched with the keywords "phosphoinositide 3-kinase" AND "protein kinase B "AND "curcumin" in the title/abstract. Also, following keywords "non-alcoholic fatty liver disease" AND "diabetes" AND "obesity" AND "kidney disease" and "neurodegenerative diseases" was searched in the whole text.

Results

Research indicates that curcumin offers potential benefits for several health conditions. Studies have shown it can help regulate blood sugar, reduce inflammation, and protect the heart, kidneys, and brain.

Conclusion

This protective effect is partially achieved by regulating the PI3K-Akt survival pathway, which helps improve metabolic disorders and oxidative stress. By examining how curcumin affects this vital cell pathway, researchers can discover new treatment strategies for a range of diseases.

Revenge unraveling the fortress: Exploring anticancer drug resistance mechanisms in BC for enhanced therapeutic strategies

Breast cancer (BC) is the most prevalent form of cancer in women worldwide and the main cause of cancer-related fatalities in females. BC can be classified into various types based on where cancer has begun to grow or spread, specific characteristics that influence how cancer behaves, and treatment choices. BC is multifaceted, and due to its diverse nature, the mechanisms involved are complex and have not yet been understood. Overexpression and expression of various factors involved in the functioning of mechanisms lead to abnormal changes, providing an environment supporting cancer cell growth. Understanding BC risk factors and early diagnosis through screening techniques like mammography and diagnostic techniques such as imaging and biopsies has advanced significantly. A wide range of treatment options, including surgery, radiation, chemotherapy, targeted treatments, and hormonal therapies, are now available. Daily advancements are being made in the clinical treatment of BC. Still, BC drug resistance cases remain highly prevalent and are currently one of the biggest problems faced by medical science. To increase response rates and possibly lengthen survival, there is a critical requirement for novel medicines with minimal sensitivity to overcome drug resistance. This review classifies different mechanisms that are involved in the development of BC and workable pharmacological targets and explains how they relate to the development of BC drug resistance. By concentrating on the mechanisms covered in this review, we can have a deep understanding of different mechanisms and learn innovative ways to develop novel therapeutics for the disease to combat medication resistance.

The function of circular RNAs in regulating Wnt/β-catenin signaling: An innovative therapeutic strategy for breast and gynecological cancers

Breast cancer (BC) and gynecological malignancies, including cervical, ovarian, and uterine cancers, are significant global health challenges due to their high prevalence, complex nature, and elevated mortality rates. Dysregulation of the Wnt/β-catenin signaling pathway is a common feature in gynecological malignancies, contributing to cancer cell growth, progression, migration, and metastasis. Recent studies have highlighted the pivotal role of non-coding RNAs (ncRNAs), particularly circular RNAs (circRNAs), in modulating the Wnt/β-catenin signaling pathway. Acting as sponges for microRNAs (miRNAs), circRNAs regulate key oncogenic and tumor-suppressive processes by influencing Wnt-related components. This research explores the role of circRNAs in breast and gynecological malignancies, focusing on their regulatory effects on the Wnt/β-catenin pathway. The findings reveal that circRNAs modulate critical cellular processes such as proliferation, apoptosis, autophagy, and metastasis, with potential implications for therapeutic interventions. Targeting circRNA-mediated dysregulation of Wnt signaling could offer novel strategies for improving diagnostic precision, treatment efficacy, and survival outcomes in breast and gynecological cancers.

Pharmacokinetics, mass balance, and metabolism of [14C]FCN-437c, a selective and potent CDK4/6 inhibitor in humans

This study investigated the pharmacokinetics, mass balance, and metabolism of [14C]FCN-437c, a selective and potent CDK4/6 inhibitor, in humans. Six healthy male Chinese subjects were administered a single oral dose of 200 mg [14C]FCN-437c (120 µCi), and plasma, urine, and feces samples were collected up to 456 h post-dose. The geometric mean Cmax of radioactivity in plasma and blood were 706 and 557 ng eq./mL, respectively, with a median Tmax of 5.0 h and a geometric mean t1/2 of 56.5 h in plasma. The primary route of elimination was fecal excretion, accounting for a mean of 77.16% of the dose, whereas urinary excretion constituted a mean of 19.19% of the administered radioactivity. UHPLC-HRMS analysis identified 12 metabolites in human plasma, urine, and feces, with 8 of them being phase I metabolites, and the major metabolic pathways were mono-oxidation and O-dealkylation. Additionally, 4 phase II metabolites were identified, including two glucuronides, one glutathione conjugate, and one cysteine conjugate. The study provides insights into the metabolic stability and clearance mechanisms of FCN-437c in human, which are essential for its further clinical development and dosing regimens.

7,7-Bis(3-Indolyl)-p-Cresol, a Metabolite from Marine-Derived Bacterium Vibrio spp. DJA11, Suppresses the Proliferation and Motility of Prostate Cancer Cells

Bacteria such as Vibrio spp. in the marine environment can produce secondary metabolites which have significant potential applications in pharmaceuticals. In a study to discover bioactive secondary metabolites from marine Vibrio spp., the strain DJA11 was encountered. HPLC/UV-guided isolation of the crude extract from this strain has led to the discovery of compound 1. Prostate cancer (PCa) is one of the biggest worldwide health issues because of its high diagnosis. CWR22Rv1 (22Rv1) is mutated in WT p53 and AR, C4-2 is derived from androgen-dependent human LNCaP and PC-3 is an androgen-independent cancer cell type. It was found that compound 1 exhibited no significant cytotoxicity at concentrations below 50 μM to human PCa cells, including 22Rv1, C4-2, and PC-3, like normal cell HEK293T. In addition, we presented that 1 inhibited the invasiveness and proliferation of 22Rv1, PC-3, and C4-2 cells by suppressing the activation of p-AKT, p-mTOR, p-STAT3, HSP90, and HSP70. Moreover, treatment with 1 decreased the mRNA expression level of ErbB4, PDK1, STAT3, HSP70, and HSP90 in some PCa cells. Therefore, compound 1 may have therapeutic potential in PCa due to its role in suppressing cancer proliferation and metastasis.

PRAP1 regulates colorectal cancer cell proliferation and ferroptosis through the Nrf2 signaling pathway

BACKGROUND

Colorectal cancer (CRC) is a common type of cancer that impacts the digestive tract, and current treatment options have limitations. Studies have confirmed that ferroptosis plays a key role in CRC progression. This research sought to clarify how Proline-rich acidic protein 1 (PRAP1) influences CRC advancement and ferroptosis, and to uncover the underlying mechanisms involved.

METHODS

Real-time quantitative PCR (RT-qPCR) and western blot were employed to ascertain the levels of PRAP1 in CRC cells (SW480, SW620, and LOVO) and tissues. Immunofluorescence was utilized to locate PRAP1. Biological characterization of CRC cells was determined through CCK-8 assay, EdU staining, Transwell assay, TUNEL staining and Scratch-wound assay. Iron and Fe2+ content was measured using prussian blue staining and iron assay kit. A nude mouse model of xenograft was established, and the impact of PRAP1 on tumor growth was investigated by pathological staining. Expression of ferroptosis-related proteins as well as nuclear factor-erythroid factor 2-related factor 2 (Nrf2) pathway proteins was detected by Western blot.

RESULTS

PRAP1 levels were elevated in CRC. Overexpression PRAP1 promoted cell proliferation, inhibited apoptosis and ferroptosis. Additionally, overexpression PRAP1 can activate the Nrf2 pathway. However, silencing PRAP1 had the opposite effect. In vivo tumor xenograft experiments showed that silencing PRAP1 resulted in decreased Ki67 positivity and increased TUNEL positivity in tumor tissues, and blocked Nrf2 pathway, thereby inhibited tumor growth.

CONCLUSION

PRAP1 promotes CRC cell proliferation and inhibits ferroptosis by Nrf2 pathway. This study provides a conceptual framework for the development of novel targeted drugs.

Exploring the Potential of Chaihu-Danggui Tang in Breast Cancer Treatment Based on Network Pharmacology, Molecular Docking, and Experimental Validation

Background

Chaihu-Danggui Tang (CHDGT) has a long history in traditional Chinese medicine (TCM) as an adjuvant therapy for breast cancer (BC), but its precise anti-tumor mechanisms remain unknown. In this study, we used network pharmacology, molecular docking, and experimental validation methods to investigate the core components, key targets, and possible mechanisms through which CHDGT may exert therapeutic effects in BC treatment.

Methods

The Traditional Chinese Medicine Systems Pharmacology (TCMSP) was employed to obtain the active ingredient and targets of CHDGT. Meanwhile, the GeneCards databases were used to retrieve pertinent targets for BC. The Venn plot was used to obtain intersection targets. Cytoscape software was used to construct an "CHDGT-active ingredients-targets" network and identify core targets. The common targets after STRING processing were imported into the Metascape database for GO and KEGG pathway enrichment analysis. Molecular docking of key ingredients and core targets of drugs was accomplished using Autodock and PyMol software. The cell and animal experiments confirmed CHDGT efficacy and mechanism in treating BC.

Results

We screened 5 key effector components, 8 core targets, and multiple signaling pathways of CHDGT in treating BC. In vitro, the results of CCK-8 assay showed that CHDGT can dose-dependently inhibits BC cell growth, and at 100 mg L-1 after 48 hours, the cell inhibition rate reached approximately 50%. Further analysis showed that CHDGT can promote apoptosis of BC cell, and regulate the expression levels of apoptosis-related genes, such as Caspase3, p53, and Bcl-2. The animal experiments verified that CHDGT can significantly inhibit the progression of BC, the tumor inhibition rate of CHDGT-H groups was as high as 60.06 ± 4.82%. In addition, H&E staining and blood biochemical analysis suggest that CHDGT exhibits favorable safety.

Conclusion

This study may provide perspectives for the development of anticancer Chinese herbs for the treatment of BC.

CEG-0598, a novel dual inhibitor of EGFR and C5aR demonstrates in vitro anticancer and antimetastatic activity in prostate cancer cells

BACKGROUND

The EGFR is abundantly expressed in prostate cancer (PC). The anaphylatoxin C5a induces leukocyte migration via the C5a receptor (C5aR) by releasing matrix metalloproteinases (MMP) to favor metastasis in the tumor microenvironment. This work aims to selectively inhibit the EGFR and C5aR in PC cells to abort cell growth/ proliferation and metastasis.

METHODS

For lead identification, high-throughput virtual screening (HTVS) of the ChemBridge library was followed by protein-ligand interaction profilers, GROMACS, and GMX-MMPBSA techniques. LNCaP and PC3 cells were used to validate in vitro efficacy.

RESULTS

HTVS identified CEG-0598 with favorable binding affinities of - 10.2 kcal/mol and - 13.5 kcal/mol towards EGFR and C5aR respectively. Molecular dynamic simulations demonstrated stable binding interactions for CEG-0598 with Root Mean Square Deviation values around 0.06 nm. The ΔG binding calculation was - 50.29, and - 51.64 for EGFR and C5aR respectively. ADME supported favorable small molecule characteristics and selective inhibition profiles. Kinome-wide off-target virtual screening predicted EGFR to have above-average docking scores. CEG-0598 inhibited EGFR and C5aR activities with IC50 values of 145.8 nM and 55.51 nM respectively. The compound effectively controlled the proliferation of LNCaP and PC3cells with GI50 values of 156.1 nM, and 112.2 nM respectively. CEG-0598 prompted dose-responsive apoptosis in the PC cells and decreased the tarns endothelial migration of both PC cells. Treatment with CEG-0598 reduced the C5a-induced MMP activity in the LNCaP and PC3cells.

CONCLUSION

CEG-0598 is a selective EGFR/C5a dual inhibitor that downregulates MMP activity to control proliferation, migration and induce apoptosis, in PC cells warranting further preclinical developments.

Mercury Bioaccumulation in Female Breast Cancer Is Associated to CXCR4 Expression

The growing incidence of breast cancer over time suggests that environmental factors might contribute to the underlying causes of the disease. Mercury, a toxic metal classified as a Substance of Very High Concern, accumulates in the body through contaminated food, air, water, and soil, raising concerns about its role in tumor biology. The main aim of this study was to identify the possible associations between in situ mercury bioaccumulation and the molecular features of breast cancer. To achieve this, a total of 26 breast cancer cases were analyzed using an integrated approach that combined DNA and RNA sequencing, histological analysis, and inductively coupled plasma mass spectrometry (ICP-MS) to assess mercury bioaccumulation. Mercury was detected in 72% of the cases. A significant positive correlation was found between mercury bioaccumulation and CXCR4 expression in breast cancer tissues. Bioinformatic analysis further revealed that CXCR4 expression was significantly higher in metastatic tissues compared to primary tumors. These findings suggest that mercury accumulation may influence tumor biology through the CXCR4-CXCL12 signaling pathway, highlighting a potential mechanism by which mercury contributes to breast cancer progression.

Protein lipidation in the tumor microenvironment: enzymology, signaling pathways, and therapeutics

Protein lipidation is a pivotal post-translational modification that increases protein hydrophobicity and influences their function, localization, and interaction network. Emerging evidence has shown significant roles of lipidation in the tumor microenvironment (TME). However, a comprehensive review of this topic is lacking. In this review, we present an integrated and in-depth literature review of protein lipidation in the context of the TME. Specifically, we focus on three major lipidation modifications: S-prenylation, S-palmitoylation, and N-myristoylation. We emphasize how these modifications affect oncogenic signaling pathways and the complex interplay between tumor cells and the surrounding stromal and immune cells. Furthermore, we explore the therapeutic potential of targeting lipidation mechanisms in cancer treatment and discuss prospects for developing novel anticancer strategies that disrupt lipidation-dependent signaling pathways. By bridging protein lipidation with the dynamics of the TME, our review provides novel insights into the complex relationship between them that drives tumor initiation and progression.

Integrating structure-activity relationships, computational approaches, and experimental validation to unlock the therapeutic potential of indole-3-carbinol and its derivatives

Indole-3-carbinol (I3C) a bioactive compound derived from cruciferous vegetables, has garnered significant attention for its role in cancer prevention and its broad-spectrum biological activities, including anti-inflammatory properties and the modulation of critical signaling pathways. This review explores the structure-activity relationship (SAR) of I3C and its derivatives, emphasizing their molecular mechanisms and therapeutic potential. Key cellular targets, such as estrogen receptors, and pathways, including NF-κB, Wnt/β-catenin, and PI3K/Akt, are highlighted for their roles in apoptosis, autophagy, and the disruption of mitogenic signaling. The SAR analysis reveals the influence of molecular modifications, particularly in dimeric forms like diindolylmethane (DIM) on pharmacokinetics and bioactivity. Computational approaches, including molecular docking, molecular dynamics simulations, and density functional theory (DFT) provide insights into ligand-receptor interactions, binding energetics, and electronic properties, facilitating biological activity predictions. Experimental evidence from in vitro assays and synergistic studies underscores the cytotoxic efficacy and combinatorial benefits of I3C with conventional chemotherapeutics. Challenges in clinical translation, such as bioavailability and targeted delivery, are addressed, highlighting the potential of integrating computational and experimental findings to develop novel I3C-based therapeutics. This comprehensive analysis positions I3C as a promising scaffold for designing effective agents against cancer and other diseases.

Research Progress of GPR137 in Malignant Tumors: A Review

Receptors coupled with G proteins (GPCRs) are expressed in large numbers in multiple systems, such as endocrine, cardiovascular, digestive, immune, and reproductive systems. As an important signal transduction mediator, in recent years, the research on GPCRs has become more and more in-depth. Many articles have verified that in the gastrointestinal, reproductive, and urinary systems, GPCRs are contributed to the development and occurrence of cancerous tumors and have been associated with the infiltration of malignant tumors and metastasis. Currently, in clinical practice, GPCRs become the target of action for about 30% of drugs. However, it should be noted that there are still over 100 GPCRs collectively referred to as orphan GPCRs (OGPCRs) due to the lack of corresponding ligands. Despite the lack of known ligands, research in animals and experiments has proved that numerous OGPCRs regulate crucial physiological functions and are intriguing and undeveloped targets for therapeutics. GPR137 is a member of OGPCRS, which promotes carcinogenesis and progression of cancers, and its expression is elevated in various malignant tumor tissues. Additionally, GPR137 has been shown to play a role in promoting tumorigenesis and metastasis in colorectal, gastric, hepatocellular, ovarian and prostate cancers. Knockdown of the GPR137 leads to cell cycle arrest within cancer cells, effectively inhibiting their proliferation and colony-forming ability while promoting apoptosis. This highlights its potential therapeutic significance as a target for numerous cancers.

E2F1-driven EXOSC10 transcription promotes hepatocellular carcinoma growth and stemness: a potential therapeutic target

BACKGROUND

E2F Transcription Factor 1 (E2F1) is a transcription factor that plays a crucial role in the growth of many cancers, including hepatocellular carcinoma (HCC). Herein, this study probed the functions and underlying mechanisms of E2F1 in HCC tumorigenesis.

METHODS

The expression profiles of E2F1 and Exosome Component 10 (EXOSC10) were detected using qRT-PCR and western blotting. Functional experiments were carried out using 5-ethynyl-2'-deoxyuridine (EdU), flow cytometry, tube formation, and sphere formation assays in vitro, as well as xenograft experiments in vivo, respectively. Stemness-related proteins were assayed using western blotting. The interaction between E2F1 and EXOSC10 was verified using bioinformatics analysis and dual-luciferase reporter assay.

RESULTS

E2F1 was highly expressed in HCC tissues and cells, and was associated with advanced TNM stage, distant metastasis, and short survival rate. Functionally, knockdown of E2F1 suppressed HCC cell proliferation, angiogenesis, and stemness, and induced cell apoptosis. Mechanistically, E2F1 directly bound to the promoter region of EXOSC10 to up-regulate its expression. EXOSC10 silencing impaired HCC cell proliferation, angiogenesis, and stemness. Moreover, the anticancer effects of E2F1 knockdown were reversed by EXOSC10 elevation. In vivo assay, E2F1 deficiency suppressed HCC tumor growth and eliminated cancer stemness, while these effects were abolished by EXOSC10 up-regulation.

CONCLUSION

E2F1 promotes EXOSC10 transcription and then facilitates HCC growth and cancer stemness, revealing a potential target for HCC therapy.

Spatial dissection of tumour microenvironments in gastric cancers reveals the immunosuppressive crosstalk between CCL2+ fibroblasts and STAT3-activated macrophages

BACKGROUND

A spatially resolved, niche-level analysis of tumour microenvironments (TME) can provide insights into cellular interactions and their functional impacts in gastric cancers (GC).

OBJECTIVE

Our goal was to translate the spatial organisation of GC ecosystems into a functional landscape of cellular interactions involving malignant, stromal and immune cells.

DESIGN

We performed spatial transcriptomics on nine primary GC samples using the Visium platform to delineate the transcriptional landscape and dynamics of malignant, stromal and immune cells within the GC tissue architecture, highlighting cellular crosstalks and their functional consequences in the TME.

RESULTS

GC spatial transcriptomes with substantial cellular heterogeneity were delineated into six regional compartments. Specifically, the fibroblast-enriched TME upregulates epithelial-to-mesenchymal transformation and immunosuppressive response in malignant and TME cells, respectively. Cell type-specific transcriptional dynamics revealed that malignant and endothelial cells promote the cellular proliferations of TME cells, whereas the fibroblasts and immune cells are associated with procancer and anticancer immunity, respectively. Ligand-receptor analysis revealed that CCL2-expressing fibroblasts promote the tumour progression via JAK-STAT3 signalling and inflammatory response in tumour-infiltrated macrophages. CCL2+ fibroblasts and STAT3-activated macrophages are co-localised and their co-abundance was associated with unfavourable prognosis. We experimentally validated that CCL2+ fibroblasts recruit myeloid cells and stimulate STAT3 activation in recruited macrophages. The development of immunosuppressive TME by CCL2+ fibroblasts were also validated in syngeneic mouse models.

CONCLUSION

GC spatial transcriptomes revealed functional cellular crosstalk involving multiple cell types among which the interaction between CCL2+ fibroblasts and STAT3-activated macrophages plays roles in establishing immune-suppressive GC TME with potential clinical relevance.

RBPMS-AS1 sponges miR-19a-3p to restrain cervical cancer cells via enhancing PLCL1-mediated pyroptosis

Cervical cancer (CC) poses a threat to human health. Enhancing pyroptosis can prevent the proliferation and epithelial-mesenchymal transition (EMT) of tumor cells. This study aims to reveal the candidates that modulate pyroptosis in CC. Accordingly, the common microRNAs (miRNAs/miRs) that were sponged by RBPMS antisense RNA 1 (RBPMS-AS1) and could target Phospholipase C-Like 1 (PLCL1) were intersected. The expression of PBPMS-AS1/miR-19a-3p (candidate miRNA)/PLCL1 was predicted in cervical squamous cell carcinoma (CESC), by which the expression location of RBPMS-AS1 and the binding between RBPMS-AS1/PLCL1 and miR-19a-3p were analyzed. The targeting relationship between RBPMS-AS1/PLCL1 and miR-19a-3p was confirmed by dual-luciferase reporter assay. After the transfection, cell counting kit-8 assay, colony formation assay, quantitative reverse transcription PCR, and Western blot were implemented for cell viability and proliferation analysis as well as gene and protein expression quantification analysis. Based on the results, RBPMS-AS1 and PLCL1 were lowly expressed, yet miR-19a-3p was highly expressed in CESC. RBPMS-AS1 overexpression diminished the proliferation and expressions of N-cadherin, vimentin, and miR-19a-3p, yet enhanced those of E-cadherin, PLCL1, and pyroptosis-relevant proteins (inteleukin-1β, caspase-1, and gasdermin D N-terminal). However, the above RBPMS-AS1 overexpression-induced effects were counteracted in the presence of miR-19a-3p. There also existed a targeting relationship and negative interplay between PLCL1 and miR-19a-3p. In short, RBPMS-AS1 sponges miR-19a-3p and represses the growth and EMT of CC cells via enhancing PLCL1-mediated pyroptosis.

Transcriptomic profile induced by calcitriol in CaSki human cervical cancer cell line

The vitamin D endocrine system, primarily mediated by its main metabolite calcitriol and the vitamin D receptor (VDR), plays a critical role in numerous human physiological processes, ranging from calcium metabolism to the prevention of various tumors, including cervical cancer. In this study, we comprehensively investigated the genomic regulatory effects of calcitriol in a cervical cancer model. We examined the transcriptional changes induced by calcitriol in CaSki cells, a cervical cell line harboring multiple copies of HPV16, the primary causal agent of cervical cancer. Our microarray findings, revealed that calcitriol regulated over 1000 protein-coding genes, exhibiting a predominantly repressive effect on the CaSki cell transcriptome by suppressing twice as many genes as it induced. Calcitriol decreased EPHA2 and RARA expression while inducing KLK6 and CYP4F3 expression in CaSki cells, as validated by qPCR and Western blot. Functional analysis demonstrated that calcitriol effectively inhibited key processes involved in cancer progression, including cell proliferation and migration. This was further supported by the significant downregulation of MMP7 and MMP13 mRNA levels. Our microarray results also showed that, in addition to its effects on protein-coding genes, calcitriol significantly regulates non-coding RNAs, altering the expression of approximately 400 non-coding RNAs, including 111 microRNA precursors and 29 mature microRNAs, of which 17 were upregulated and 12 downregulated. Notably, among these calcitriol-regulated microRNAs are some involved in cervical cancer biology, such as miR-6129, miR-382, miR-655, miR-211, miR-590, miR-130a, miR-301a, and miR-1252. Collectively, these findings suggest that calcitriol exhibits a significant antitumor effect in this advanced cervical cancer model by blocking critical processes for tumor progression, underscoring the importance of maintaining adequate vitamin D nutritional status.

Juglone-Bearing Thiopyrano[2,3-d]thiazoles Induce Apoptosis in Colorectal Adenocarcinoma Cells

Colorectal cancer is a major global health challenge, with current treatments limited by toxicity and resistance. Thiazole derivatives, known for their bioactivity, are emerging as promising alternatives. Juglone (5-hydroxy-1,4-naphthoquinone) is a naturally occurring compound with known anticancer properties, and its incorporation into thiopyrano[2,3-d]thiazole scaffolds may enhance their therapeutic potential. This study examined the cytotoxicity of thiopyrano[2,3-d]thiazoles and their effects on apoptosis in colorectal cancer cells. Les-6547 and Les-6557 increased the population of ROS-positive HT-29 cancer cells approximately 10-fold compared with control cells (36.3% and 38.5% vs. 3.8%, respectively), potentially contributing to various downstream effects. Elevated ROS levels were associated with cell cycle arrest, inhibition of DNA biosynthesis, and reduced cell proliferation. A significant shift in the cell cycle distribution was observed, with an increase in S-phase (from 17.3% in the control to 34.7% to 51.3% for Les-6547 and Les-6557, respectively) and G2/M phase (from 24.3% to 39.9% and 28.8%). Additionally, Les-6547 and Les-6557 inhibited DNA biosynthesis in HT-29 cells, with IC50 values of 2.21 µM and 2.91 µM, respectively. Additionally, ROS generation may initiate the intrinsic apoptotic pathway. Les-6547 and Les-6557 activated both intrinsic and extrinsic apoptotic pathways, demonstrated by notable increases in the activity of caspase 3/7, 8, 9, and 10. This study provides a robust basis for investigating the detailed molecular mechanisms of action and therapeutic potential of Les-6547 and Les-6557.

Tumor microenvironment: recent advances in understanding and its role in modulating cancer therapies

Tumor microenvironment (TME) denotes the non-cancerous cells and components presented in the tumor, including molecules produced and released by them. Interactions between cancer cells, immune cells, stromal cells, and the extracellular matrix within the TME create a dynamic ecosystem that can either promote or hinder tumor growth and spread. The TME plays a pivotal role in either promoting or inhibiting tumor growth and dissemination, making it a critical factor to consider in the development of effective cancer therapies. Understanding the intricate interplay within the TME is crucial for devising effective cancer therapies. Combination therapies involving inhibitors of immune checkpoint blockade (ICB), and/or chemotherapy now offer new approaches for cancer therapy. However, it remains uncertain how to best utilize these strategies in the context of the complex tumor microenvironment. Oncogene-driven changes in tumor cell metabolism can impact the TME to limit immune responses and present barriers to cancer therapy. Cellular and acellular components in tumor microenvironment can reprogram tumor initiation, growth, invasion, metastasis, and response to therapies. Components in the TME can reprogram tumor behavior and influence responses to treatments, facilitating immune evasion, nutrient deprivation, and therapeutic resistance. Moreover, the TME can influence angiogenesis, promoting the formation of blood vessels that sustain tumor growth. Notably, the TME facilitates immune evasion, establishes a nutrient-deprived milieu, and induces therapeutic resistance, hindering treatment efficacy. A paradigm shift from a cancer-centric model to a TME-centric one has revolutionized cancer research and treatment. However, effectively targeting specific cells or pathways within the TME remains a challenge, as the complexity of the TME poses hurdles in designing precise and effective therapies. This review highlights challenges in targeting the tumor microenvironment to achieve therapeutic efficacy; explore new approaches and technologies to better decipher the tumor microenvironment; and discuss strategies to intervene in the tumor microenvironment and maximize therapeutic benefits.

Genomic Landscape of Breast Cancer: Study Across Diverse Ethnic Groups

Background: Breast cancer (BC) is the most common cancer among women worldwide, with incidence and mortality rates varying across ethnic groups due to sociodemographic, clinicopathological, and genomic differences. This study aimed to characterize the genomic landscape of BC in diverse ethnic groups using computational tools to explore these variations. Methodology: cBioPortal was used to analyze genomic, clinicopathological, and sociodemographic data from 1084 BC samples. Mutated genes were classified based on GeneCards platform data. Enrichment analysis was performed with CancerHallmarks, and genes not found were compared with MSigDB's Hallmark Gene Sets. Genes absent from both were further analyzed using NDEx through Cytoscape.org to explore their role in cancer. Results: Significant differences (p < 0.05) were observed in sex, tumor subtypes, genetic ancestry, median of the fraction of the altered genome, mutation count, and mutation frequencies of genes across ethnic groups. We identified the most frequently mutated genes. Some of these genes were found to be associated with classic cancer hallmarks, such as replicative immortality, sustained proliferative signaling, and the evasion of growth suppressors. However, the exact role of some of these genes in cancer remains unclear, highlighting the need for further research to better understand their involvement in tumor biology. Conclusions: This study identified significant clinicopathological and genomic variations in BC across ethnic groups. While key genes associated with cancer hallmarks were found, the incomplete characterization of some highlights the need for further research, especially focusing on ethnic groups, to understand their role in tumor biology and improve personalized treatments.

Independent signaling pathways provide a fail-safe mechanism to prevent tumorigenesis

Controlled signaling activity is vital for normal tissue homeostasis and oncogenic signaling activation facilitates tumorigenesis. Here we use single-cell transcriptomics to investigate the effects of pro-proliferative signaling on epithelial homeostasis using the Drosophila follicle cell lineage. Notably, EGFR-Ras overactivation induces cell cycle defects by activating the transcription factors Pointed and E2f1 and impedes differentiation. Hh signaling simultaneously promotes an undifferentiated state and induces differentiation via activation of EMT-associated transcription factors zfh1 and Mef2. As a result, overactivation of Hh signaling generates a transcriptional hybrid state comparable to epithelial-mesenchymal-transition. Co-overactivation of Hh signaling with EGFR-Ras signaling blocks differentiation and induces key characteristics of tumor cells including a loss of tissue architecture caused by reduced expression of cell adhesion molecules, sustained proliferation and an evasion of cell cycle checkpoints. These findings provide new insight into how non-interacting signaling pathways converge at the transcriptional level to prevent malignant cell behavior.

The Histomorphology to Molecular Transition: Exploring the Genomic Landscape of Poorly Differentiated Epithelial Endometrial Cancers

The peremptory need to circumvent challenges associated with poorly differentiated epithelial endometrial cancers (PDEECs), also known as Type II endometrial cancers (ECs), has prompted therapeutic interrogation of the prototypically intractable and most prevalent gynecological malignancy. PDEECs account for most endometrial cancer-related mortalities due to their aggressive nature, late-stage detection, and poor response to standard therapies. PDEECs are characterized by heterogeneous histopathological features and distinct molecular profiles, and they pose significant clinical challenges due to their propensity for rapid progression. Regardless of the complexities around PDEECs, they are still being administered inefficiently in the same manner as clinically indolent and readily curable type-I ECs. Currently, there are no targeted therapies for the treatment of PDEECs. The realization of the need for new treatment options has transformed our understanding of PDEECs by enabling more precise classification based on genomic profiling. The transition from a histopathological to a molecular classification has provided critical insights into the underlying genetic and epigenetic alterations in these malignancies. This review explores the genomic landscape of PDEECs, with a focus on identifying key molecular subtypes and associated genetic mutations that are prevalent in aggressive variants. Here, we discuss how molecular classification correlates with clinical outcomes and can refine diagnostic accuracy, predict patient prognosis, and inform therapeutic strategies. Deciphering the molecular underpinnings of PDEECs has led to advances in precision oncology and protracted therapeutic remissions for patients with these untamable malignancies.

Investigation of the mechanism by which FOXJ2 inhibits proliferation, metastasis and cell cycle progression of ovarian cancer cells through the PI3K/AKT signaling pathway

BACKGROUND

As one member of the Forkhead Box transcription factor, Forkhead Box J2 (FOXJ2) is involved in diverse cancers. At present, the specific role and mechanism of FOXJ2 in ovarian cancer (OC) have not been fully addressed, which allows us to fill the blank.

MATERIALS AND METHODS

Accordingly, the expression of FOXJ2 in OC cells and ovarian epithelial cells was quantified via real-time qPCR. Following the transfection, cell counting kit-8, Transwell, wound healing and flow cytometry assays were performed to measure the proliferation, metastasis, apoptosis and cell cycle of OC cells A2780 and HEY. Further, real-time qPCR and Western blotting were both employed for the quantification assays on the expression levels of FOXJ2 as well as phosphoinositide 3-kinase (PI3K) and protein kinase B (AKT) (in both unphosphorylated and phosphorylated forms).

RESULTS

Based on the results, FOXJ2 were highly-expressed in OC cells (P < 0.05). Silencing of FOXJ2 resulted in attenuated OC cell proliferation, reduced numbers of migrating and invading OC cells, decreased apoptotic capacity, and cell cycle arrest in G1/S phase (P < 0.05). In addition, the knockdown of FOXJ2 caused the downward trend on the phosphorylation level of both PI3K and AKT in OC cells (P < 0.05).

CONCLUSION

The silencing of FOXJ2 could repress the growth and metastasis potentials and cause the cell cycle G1/S arrest of OC cells in vitro, which was possibly achieved via targeting the PI3K/AKT pathway.

Computational Molecular Docking Analysis of Linalool Enantiomers Interaction With Mitogen-Activated Protein Kinase 1 (MAPK1): Insights Into Potential Binding Mechanisms and Affinity

Molecular docking analysis of linalool interaction with mitogen-activated protein kinase 1 (MAPK1) provides valuable insights into the potential binding mechanisms and affinity of this interaction. Linalool, a naturally occurring terpene alcohol, has been the subject of increasing interest due to its diverse pharmacological properties, including anti-inflammatory, antioxidant, and anticancer activities. MAPK1 is a crucial signaling protein involved in various cellular processes, including cell proliferation, differentiation, and survival. Using MOE software, we conducted a stereoisomer analysis of (R)- and (S)-linalool in our study. After docking, the ligand was ranked according to their binding energy and the best lead compound was selected based on the highest binding energy. The results showed that the S-linalool isomer showed superior anticancer activity, while the R-linalool molecule showed less activity. This interaction could provide insights into linalool's potential therapeutic applications, highlighting its diverse pharmacological properties.

Modification of Fc-fusion protein structures to enhance efficacy of cancer vaccine in plant expression system

Epithelial cell adhesion molecule (EpCAM) fused to IgG, IgA and IgM Fc domains was expressed to create IgG, IgA and IgM-like structures as anti-cancer vaccines in Nicotiana tabacum. High-mannose glycan structures were generated by adding a C-terminal endoplasmic reticulum (ER) retention motif (KDEL) to the Fc domain (FcK) to produce EpCAM-Fc and EpCAM-FcK proteins in transgenic plants via Agrobacterium-mediated transformation. Cross-fertilization of EpCAM-Fc (FcK) transgenic plants with Joining chain (J-chain, J and JK) transgenic plants led to stable expression of large quaternary EpCAM-IgA Fc (EpCAM-A) and IgM-like (EpCAM-M) proteins. Immunoblotting, SDS-PAGE and ELISA analyses demonstrated that proteins with KDEL had higher expression levels and binding activity to anti-EpCAM IgGs. IgM showed the strongest binding among the fusion proteins, followed by IgA and IgG. Sera from BALB/c mice immunized with these vaccines produced anti-EpCAM IgGs. Flow cytometry indicated that the EpCAM-Fc fusion proteins significantly activated CD8+ cytotoxic T cells, CD4+ helper T cells and B cells, particularly with EpCAM-FcKP and EpCAM-FcP (FcKP) × JP (JKP). The induced anti-EpCAM IgGs captured human prostate cancer PC-3 and colorectal cancer SW620 cells. Sera from immunized mice inhibited cancer cell proliferation, migration and invasion; down-regulated proliferation markers (PCNA, Ki-67) and epithelial-mesenchymal transition markers (Vimentin); and up-regulated E-cadherin. These findings suggest that N. tabacum can produce effective vaccine candidates to induce anti-cancer immune responses.

The emerging role of transmembrane proteins in tumorigenesis and therapy

Transmembrane proteins (TMEMs) are a kind of proteins that can cross the phospholipid bilayer one or multiple times and remain permanently anchored. They are involved in the regulation of many biological functions, and their dysregulation is associated with many human diseases and even cancer. Abnormal expression alterations of TMEMs widely exist in tumor tissues compared with paracancerous tissues. They are associated with the clinicopathological features of cancer patients by promoting or inhibiting the development of cancer, thus affecting survival. This review summarized the structure and physiological functions of TMEMs, as well as their roles in tumorigenesis, such as cell proliferation, apoptosis, autophagy, adhesion, metastasis, metabolism and drug resistance. In addition, we elaborated on the potentiality of TMEMs for tumor immunity. Moreover, the advances of TMEMs were subsequently retrospected in several common types of human cancers, including breast cancer, gastric cancer, and lung cancer. Subsequently, we outlined the targeted therapeutic strategies against TMEMs proposed based on existing studies. To date, there are still many TMEMs whose functions and mechanisms have not been well known due to their special structures. Since the important roles TMEMs plays in the development of human cancers, it is urgent to portray their structure and function in carcinogenesis, providing potential biomarkers for cancer patients in the future.

The regulatory role of ZFAS1/miRNAs/mRNAs axis in cancer: a systematic review

Objectives

Recently, we and others have demonstrated the involvement of Zinc Finger Antisense 1 (ZFAS1) in cancer development. However, the intricate interplay of ZFAS1 with miRNAs and mRNAs remains to be fully understood.

Materials and methods

We followed PRISMA guidelines to retrieve and assess the available literature on the topic "ZFAS1/miRNA/mRNA axis" and "Cancer" from databases such as PubMed, Google Scholar, and ScienceDirect. We also used bioinformatic webtools for analyzing the potential miRNA targets of ZFAS1 and its role in survival of cancer patients along with their role in various biological functions and pathways.

Results

Our literature search and bioinformatic analysis reveals that ZFAS1 serves as a sponge for numerous miRNAs. Among the various targeted miRNAs, miR-150-5p stands out as significantly correlated with ZFAS1 across multiple databases (p-value = 3.27e-16, R-value = -0.346). Additionally, our Kaplan-Meier survival analysis indicates a noteworthy association between ZFAS1 expression levels and overall poor prognosis and survival rates in ovarian, sarcoma, and pancreatic cancers. We also underscore the involvement of various signaling pathways, including Signal Transducer and Activator of Transcription 3 (STAT3), Spindle and Kinetochore-associated Protein 1 (SKA1), Lysophosphatidic acid receptor 1 (LPAR1), and Wnt β-catenin, in cancer development through the ZFAS1/miRNAs/mRNAs axis. Furthermore, we identify ZFAS1's pivotal roles in diverse molecular processes, such as RNA binding and ribonucleoprotein formation.

Conclusion

In conclusion, this review comprehensively summarizes the latest advancements in understanding the regulatory relationships among ZFAS1, miRNAs, and mRNAs, emphasizing their collective role in cancer development to propose innovative avenues for cancer treatment. We believe that the intricate relationship among the ZFAS1-miRNA-mRNA axis may yield potential therapeutic targets for effective cancer management.

Bipolar Electrode-Based Precise Manipulation and Selective Electroporation of Cells

The intracellular delivery toward a specific type of single cell shows great potential in single-cell-specific therapeutic and diagnostic applications. Most of the current methods require high-precision micromanipulators or require multiple steps for motor fabrication, which hinders their practical application. Herein, we for the first time report a method for precise manipulation and selective electroporation of cells using a bipolar electrode. We achieved the precise control of the position of target cells via dielectrophoresis (DEP) at the edge of a bipolar electrode and selective electroporation of specific cells by the local intensified electric field obtained by the gap between the driving electrodes under a direct current (DC) pulse train. Active cell targeting and electroporation of cells are demonstrated using a rotating electric field to drive the cells and a train of pulses to transfect the cells. By harnessing pDEP and twDEP, our device offers the ability to precisely control the movement and placement of specific cells under a rotating electric field and enables the targeted cells to be driven toward regions where the electric field strength is optimized for efficient electroporation. Our method was demonstrated to be applicable across a wide range of cell types, by selective electroporation of different cells including yeast cells, K562 cells, THP-1 cells, 293T cells, and SNU-1 cells. In addition to the injection of fluorescence dye molecules, we also further demonstrated the introduction of plasmids into the SNU-1 cells successfully. This approach is generic and applicable to bacteria and a wide range of cell types, offering an important and novel experimental tool for targeted delivery and single-cell analysis.

ATP1B3 may promote glioma proliferation and migration through MAPK/NF-KB signaling pathway

Objective

To investigate the function of ATPase Na+/K+ Transporting Subunit Beta 3 (ATP1B3) in gliomas and the molecular mechanisms associated with them in order to identify a novel target and approach for glioma clinical diagnosis and treatment.

Methods

The Cancer Genome Atlas (TCGA), a public tumor database, and the Chinese Glioma Genome Atlas (CGGA) were used to evaluate the differential expression of ATP1B3 in glioma cells of various grades. Its connection to patient survival and prognosis; The siRNA interference approach instantly reduced the amount of ATP1B3 expression in the glioma cell lines U87MG and U251MG. The knockdown efficiency was assessed by Western Blotting (WB) and RT-qPCR. Following ATP1B3 knockdown, the ability of glioma cells to proliferate, migrate, and invade was identified using the Transwell assay and CCK-8. The proteins that might interact with ATP1B3 were filtered out using the TCGA database and literature analysis. The WB assay was used to determine the expression level of Protein Phosphatase 1 Catalytic Subunit Alpha (PPP1CA) following ATP1B3 deletion, immunoprecipitation was used to determine the direct influence of the two proteins, and immunofluorescence was used to analyze the distribution of ATP1B3 and PPP1CA proteins in glioma cells. Cyclin D1 and vascular endothelial growth factor A(VEGFA) expression alterations following ATP1B3 deletion were identified using the WB assay. Following ATP1B3 knockdown, the WB assay was used to determine the expression levels of p-Raf1, p-MEK 1/2, p-ERK 1/2, p-IκBα, and p-P65 in the MAPK and NF-κB signaling pathway.

Results

Database analysis revealed a negative correlation between the patients' prognosis and the expression level of ATP1B3, and a positive correlation with the malignant degree of the glioma. The mRNA and protein expression levels of ATP1B3 were significantly decreased after knockout, and the proliferation, migration and invasion ability of cells in knockout group were significantly lower than those in control group, with statistical difference. The immunoprecipitation results were negative, and the knockdown group's PPP1CA expression was lower than the control group's. Following ATP1B3 knockdown, Cyclin D1 and VEGFA protein expression levels dropped, and the effects were statistically significant. There was a statistically significant drop in the expression levels of p-Raf1, p-MEK 1/2, p-ERK 1/2, p-IκBα, and p-P65 following ATP1B3 deletion.

Conclusion

In gliomas, ATP1B3 is highly expressed. Glioma cell motility, invasion, and proliferation all decline when ATP1B3 expression is lowered. The downstream protein PPP1CA is indirectly regulated by ATP1B3. By controlling the MAPK and NF-κB signaling pathways, ATP1B3 may have a role in the invasion, migration, and proliferation of glioma cells. As a result, the ATP1B3 gene might be a biological target for treatment and a possible neurotumor diagnostic.

Pyruvate Kinase M2-Responsive Release of Paclitaxel and Indoleamine 2,3-Dioxygenase Inhibitor for Immuno-Chemotherapy of Nonsmall Cell Lung Cancer

Paclitaxel (PTX) is a first-line chemotherapeutic drug for non-small cell lung cancer (NSCLC) but it can induce indoleamine 2,3-dioxygenase (IDO) activation, which severely lowers down its immuno-chemotherapeutic effect. To address this issue, a smart peptide hydrogelator Nap-Phe-Phe-Phe-Lys-Ser-Thr-Gly-Gly-Lys-Ala-Pro-Arg-OH (Nap-T), which co-assembles with PTX and an IDO inhibitor GDC0919 to form a hydrogel GP@Gel Nap-T, is rationally designed. Upon specific phosphorylation by pyruvate kinase M2 (PKM2), an overexpressed biomarker of NSCLC, Nap-T is gradually converted to Nap-Phe-Phe-Phe-Lys-Ser-Thr(H2PO3)-Gly-Gly-Lys-Ala-Pro-Arg-OH (Nap-Tp), leading to dehydrogelation and sustained release of PTX and GDC0919 within NSCLC tissues. The released PTX exerts chemotherapy on NSCLC cells as well as immunogenic cell death induction, while GDC0919 promotes the immuno-chemotherapeutic effect of PTX through IDO inhibition. We find that GP@Gel Nap-T enhances the infiltration of tumor-infiltrating immune cells and reduces the number of immunosuppressive cells in either tumor tissues or tumor-draining lymph nodes, thus enhancing the immuno-chemotherapy of PTX toward NSCLC. With this PKM2-responsive drug release strategy, the smart peptide hydrogel platform might be applied for NSCLC treatment in clinic in near future.

Interaction of GPER-1 with the endocrine signaling axis in breast cancer

G Protein-Coupled Estrogen Receptor 1 (GPER-1) is a membrane estrogen receptor that has emerged as a key player in breast cancer development and progression. In addition to its direct influence on estrogen signaling, a crucial interaction between GPER-1 and the hypothalamic-pituitary-gonadal (HPG) axis has been evidenced. The novel and complex relationship between GPER-1 and HPG implies a hormonal regulation with important homeostatic effects on general organ development and reproductive tissues, but also on the pathophysiology of cancer, especially breast cancer. Recent research points to a great versatility of GPER-1, interacting with classical estrogen receptors and with signaling pathways related to inflammation. Importantly, through its activation by environmental and synthetic estrogens, GPER-1 is associated with hormone therapy resistance in breast cancer. These findings open new perspectives in the understanding of breast tumor development and raise the possibility of future applications in the design of more personalized and effective therapeutic approaches.

Post-Translational Modifications of Proteins Orchestrate All Hallmarks of Cancer

Post-translational modifications (PTMs) of proteins dynamically build the buffering and adapting interface between oncogenic mutations and environmental stressors, on the one hand, and cancer cell structure, functioning, and behavior. Aberrant PTMs can be considered as enabling characteristics of cancer as long as they orchestrate all malignant modifications and variability in the proteome of cancer cells, cancer-associated cells, and tumor microenvironment (TME). On the other hand, PTMs of proteins can enhance anticancer mechanisms in the tumoral ecosystem or sustain the beneficial effects of oncologic therapies through degradation or inactivation of carcinogenic proteins or/and activation of tumor-suppressor proteins. In this review, we summarized and analyzed a wide spectrum of PTMs of proteins involved in all regulatory mechanisms that drive tumorigenesis, genetic instability, epigenetic reprogramming, all events of the metastatic cascade, cytoskeleton and extracellular matrix (ECM) remodeling, angiogenesis, immune response, tumor-associated microbiome, and metabolism rewiring as the most important hallmarks of cancer. All cancer hallmarks develop due to PTMs of proteins, which modulate gene transcription, intracellular and extracellular signaling, protein size, activity, stability and localization, trafficking, secretion, intracellular protein degradation or half-life, and protein-protein interactions (PPIs). PTMs associated with cancer can be exploited to better understand the underlying molecular mechanisms of this heterogeneous and chameleonic disease, find new biomarkers of cancer progression and prognosis, personalize oncotherapies, and discover new targets for drug development.

The Proapoptotic Effect of MB-653 Is Associated with the Modulation of Metastasis and Invasiveness-Related Signalling Pathways in Human Colorectal Cancer Cells

Colorectal cancer is one of the most common cancers worldwide and has a high mortality rate. In this study, we investigated the cytotoxic, proapoptotic, and anti-invasive effects of the synthetic indole phytoalexin MB-653. The antiproliferative effect was determined using an MTT assay, showing IC50 values of 5.8 ± 0.3 μmol/L for HCT116 cells and 6.1 ± 2.1 μmol/L for Caco2 cells. Flow cytometry and Western blot analysis were employed to investigate the molecular mechanisms underlying cytotoxicity, proapoptotic action, and anti-invasion effects. The proapoptotic activity was evidenced by the activation of caspases 3 and 7, mitochondrial dysfunction, and an increased number of apoptotic cells, confirmed by annexin V/PI and AO/PI staining. Additionally, MB-653 induces dose-dependent G2/M phase cell cycle arrest, the cause of which could be cyclin B1/CDC2 complex dysfunction and/or a decrease in α-tubulin protein expression. Another important observation was that MB-653 modulated several signalling pathways associated with various cellular activities, including survival, proliferation, tumour invasiveness, metastasis, and epithelial-mesenchymal transition (EMT). We further demonstrated its safety for topical and parenteral application. To sum up, our results indicate the real potential of MB-653 in treating colorectal cancer.

Potential Anti-tumor Effects and Apoptosis-inducing Mechanisms of Saponins: A Review

The search for effective cancer therapies highlights saponins, natural plant-derived compounds, as promising anticancer agents. These compounds induce apoptosis in cancer cells by activating caspases, essential enzymes for cell death. For example, Soyasapogenol B from Glycine max and Astragaloside IV from Astragalus membranaceus effectively trigger apoptosis in cancer cells. Additionally, saponins, such as Compound K from American ginseng and Saikosaponin from Bupleurum falcatum, affect extrinsic and intrinsic pathways, including mitochondrial release of cytochrome C and activation of caspase-9. Ziyuglycoside II also acts on both pathways and activates the ROS/JNK pathway. Understanding these mechanisms provides promising prospects for developing more specific and safer anticancer therapies. The review utilized the ScienceDirect, PubMed, and Google Scholar databases. It was found that original articles and reviews from journals indexed in these sources emphasized the antitumor capabilities of saponins and discussed their role in apoptosis induction and caspase activation. The activation of caspases by saponins in the apoptotic pathway involves two main pathways: the extrinsic pathway is initiated by external signals that activate caspase-8, while the intrinsic pathway starts with internal stimuli, causing the release of cytochrome c and the activation of caspase-9. These pathways both lead to the activation of effector caspases (caspases 3, 6, and 7), culminating in apoptosis, an essential process for maintaining cellular balance and eliminating damaged cells. Identifying saponins in the context of cancer and their mechanisms of action is an ever-evolving field. Future research may lead to more targeted and personalized therapies, highlighting the collaboration between basic and clinical research in this promising area of medicine.

Significance of Ribonucleoside-diphosphate Reductase Subunit M2 in Lung Adenocarcinoma

INTRODUCTION

The Ribonucleoside-diphosphate Reductase subunit M2 (RRM2) is known to be overexpressed in various cancers, though its specific functional implications remain unclear. This aims to elucidate the role of RRM2 in the progression of Lung Adenocarcinoma (LUAD) by exploring its involvement and potential impact.

METHODS

RRM2 data were sourced from multiple databases to assess its diagnostic and prognostic significance in LUAD. We evaluated the association between RRM2 expression and immune cell infiltration, analyzed its function, and explored the effects of modulating RRM2 expression on LUAD cell characteristics through laboratory experiments.

RESULTS

RRM2 was significantly upregulated in LUAD tissues and cells compared to normal counterparts (p < 0.05), with rare genetic alterations noted (approximately 2%). This overexpression clearly distinguished LUAD from normal tissue (area under the curve (AUC): 0.963, 95% confidence intervals (CI): 0.946-0.981). Elevated RRM2 expression was significantly associated with adverse clinicopathological characteristics and poor prognosis in LUAD patients. Furthermore, a positive association was observed between RRM2 expression and immune cell infiltration. Pathway analysis revealed a critical connection between RRM2 and the cell cycle signaling pathway within LUAD. Targeting RRM2 inhibition effectively suppressed LUAD cell proliferation, migration, and invasion while promoting apoptosis. This intervention also modified the expression of several crucial proteins, including the downregulation of CDC25A, CDC25C, RAD1, Bcl-2, and PPM1D and the upregulation of TP53 and Bax (p < 0.05).

CONCLUSION

Our findings highlight the potential utility of RRM2 expression as a biomarker for diagnosing and predicting prognosis in LUAD, shedding new light on the role of RRM2 in this malignancy.

Characterizing the evolutionary dynamics of cancer proliferation in single-cell clones with SPRINTER

Proliferation is a key hallmark of cancer, but whether it differs between evolutionarily distinct clones co-existing within a tumor is unknown. We introduce the Single-cell Proliferation Rate Inference in Non-homogeneous Tumors through Evolutionary Routes (SPRINTER) algorithm that uses single-cell whole-genome DNA sequencing data to enable accurate identification and clone assignment of S- and G2-phase cells, as assessed by generating accurate ground truth data. Applied to a newly generated longitudinal, primary-metastasis-matched dataset of 14,994 non-small cell lung cancer cells, SPRINTER revealed widespread clone proliferation heterogeneity, orthogonally supported by Ki-67 staining, nuclei imaging and clinical imaging. We further demonstrated that high-proliferation clones have increased metastatic seeding potential, increased circulating tumor DNA shedding and clone-specific altered replication timing in proliferation- or metastasis-related genes associated with expression changes. Applied to previously generated datasets of 61,914 breast and ovarian cancer cells, SPRINTER revealed increased single-cell rates of different genomic variants and enrichment of proliferation-related gene amplifications in high-proliferation clones.

Antioxidant and anticancer effects of kiwi (Actinidia deliciosa) fermented beverage using Lactobacillus plantarum

Kiwi fermented beverages utilizing lactic acid bacteria exhibit a decrease in sugar content, pH and increase in total acidity. The maximum CFU is observed in 20% kiwi fermented beverages containing Lactobacillus plantarum. For the most efficient fermentation conditions, 20% kiwi fermented beverages fermented at 24 h was selected for use in subsequent experiments. The glucose, fructose, citric acid levels decreased in optimized kiwi fermented beverage, while the succinic acid, lactic acid, acetic acid, total flavonoid content, and total polyphenol content increased. Furthermore, optimized kiwi fermented beverage showed significantly higher reducing power, ABTS·+ and DPPH radical scavenging activities, and hydroxyl radical scavenging activities compared to the optimized kiwi beverage. Optimized kiwi fermented beverage suppresses proliferation in various cells, including MDA-MB-231, in a dose- and time-dependent manner. Lactobacillus plantarum fermentation of kiwi fruit enhances its functionality, underscoring the potential of OKFB as an improved functional food ingredient.

Therapeutic Potental of Quinolin-2H-one Hybrids as Anticancer Agents

The statistical data related to cancer in recent years has shown a great increase in the number of cases and is likely to further increase in the future. Even after seeking thorough knowledge on the aetiology of cancer and related disorders and attempting to cure it by various methods like gene therapy, T cell therapy, chemotherapy, surgery, hormone therapy, and photodynamic therapy, there has always been disappointment concerning the survival rate. Hence, there is still a great urge for the discovery of novel drugs for the treatment of cancer. Chemotherapy being one of the widely used methods, several drug entities possessing anticancer properties are already in the market but none of them is known to show good efficacy which necessitates researchers to design newer drugs for the treatment of cancer. The urge to synthesize novel anticancer entities directed researchers towards molecular hybridization as one of the novel methods for designing newer drugs. Literature reveals wide research carried out on quinolin-2-one hybrids, possessing anticancer properties through different mechanisms. Tipifarnib and Dovitinib are quinolin-2-one hybrids used to treat cancer, possessing imidazole and benzimidazole heterocyclic rings. Different heterocyclic scaffolds such as pyrone, pyrrole, pyrimidine, pyridine, thiazole, and pyrazole in combination with heterocyclic quinolin-2-one have shown high potential to become lead for newer anticancer agents with better and wider therapeutic properties and lesser side effects. The current review presents information on the different quinolin-2-one hybrids and their effect on different cancer cell lines. It also imparts knowledge of the structural requirements for designing novel anticancer agents.

AGR2 knockdown induces ER stress and mitochondria fission to facilitate pancreatic cancer cell death

Anterior gradient 2 (AGR2) is often overexpressed in many human cancers, including pancreatic ductal adenocarcinoma (PDAC). Elevated AGR2 expression is known to play a critical role in tumor development, progression, and metastasis and positively correlates with poor patient survival. However, the relationship between AGR2 expression and tumor growth is not fully understood. Our study aims to investigate the impact of AGR2 knockdown on the survival of two pancreatic cancer cell lines, HPAF-II and PANC-1, that exhibit high AGR2 expression. This study revealed that the knockdown of AGR2 expression through an inducible shRNA-mediated approach reduced the proliferative ability and colony-forming potential of PDAC cells compared to scramble controls. Significantly, knocking down AGR2 led to the inhibition of multiple protein biosynthesis pathways and induced ER stress through unfolded protein response (UPR) activation. AGR2 knockdown induced ER stress and increased mitochondrial fission, while mitochondrial fusion remained unaffected. Ultimately, apoptotic cell death was heightened in AGR2 knockdown PDAC cells compared to the controls. Overall, these data reveal a new axis involving AGR2-ER stress-associated mitochondrial fission that could be targeted to improve PDAC patient outcomes.

Regulation of lymphoma in vitro by CLP36 through the PI3K/AKT/CREB signaling pathway

Background

CLP36 is also known as PDZ and LIM Domain 1 (PDLIM1) that is a ubiquitously-expressed α-actinin-binding cytoskeletal protein involved in carcinogenesis, and our current study aims to explore its involvement in lymphoma.

Methods

Accordingly, the CLP36 expression pattern in lymphoma and its association with the overall survival was predicted. Then, qPCR was applied to gauge CLP36 expression in lymphoma cells and determine the knockdown efficiency. The survival, proliferation and apoptosis of CLP36-silencing lymphoma cells were tested. Cell viability, proliferation and apoptosis were assessed based on cell counting kit-8 (CCK-8) assay, colony formation assay, EdU staining, and flow cytometry, respectively. Additionally, qPCR was used to calculate the expressions of proteins associated with metastasis and apoptosis, while immunoblotting was employed to determine the phosphorylation status of phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT)/cAMP-response element binding protein (CREB).

Results

CLP36 expression was relatively higher in lymphoma, which was associated with a poor prognosis. Also, CLP36 was highly-expressed in lymphoma cells and the silencing of CLP36 contributed to the suppressed survival and proliferation as well as the enhanced apoptosis of lymphoma cells. Further, CLP36 silencing repressed the expressions of Cadherin 2 (CDH2) and Vimentin (VIM) yet promoted those of Bax and Caspase 3 in lymphoma cells, concurrent with the reduction on the phosphorylation of PI3K, AKT and CREB, all of which were confirmed to be positively correlated with CLP36.

Conclusion

This study, so far as we are concerned, provided evidence on the involvement of CLP36/PI3K/AKT/CREB axis in lymphoma, which may be contributive for the identification on the relevant molecular targets of lymphoma.

Intragenic antimicrobial peptide Hs02 toxicity against leukemia cell lines is associated with increased expression of select pyroptotic components

The anticancer potential of some antimicrobial peptides has been reported. Hs02 is a recently characterized Intragenic Antimicrobial Peptide (IAP), which was able to exhibit potent antimicrobial and anti-inflammatory action. In this study, we evaluate for the first time the antineoplastic potential of the Hs02 IAP using cell lines representing the main types of leukemia as cancer models. Interestingly, this peptide decreased the viability of several leukemic cell lines, without compromising the viability of PBMCs in the same concentration. In the HL-60 line, treatment with Hs02 controlled cell division, leading to cell arrest in the G1 phase of the cell cycle. More importantly, HL-60 cells treated with Hs02 undergo cell death, with the formation of pores in the plasma membrane and the release of LDH. Accordingly, Hs02 treatment stimulated the expression of components involved in pyroptosis, such as NLRP1, CASP-1, GSDME, and IL-1β. Taken together, our data characterize the antineoplastic potential of Hs02 and open an opportunity for both evaluating the peptide's antineoplastic potential in other cancer models and using this molecule as a template for new peptides with therapeutic potential against cancer.

Carbon Monoxide in Healthcare Monitoring Balancing Potential and Challenges in Public Health Perspective: A Narrative Review

Carbon monoxide (CO) has medicinal potential and harmful qualities. However, excessive exposure to CO can lead to severe organ failure. CO is exogenously and endogenously generated within the human body. Ongoing research aims to uncover the beneficial aspects of CO. It serves as a biomarker for inflammation and other serious illnesses. Preclinical trials exploring CO's application have indicated potential benefits in addressing conditions such as Ischemia, Tendonitis, Neuropathic pain, and even cancer therapy. Cardiovascular disease emerges as a particularly promising target for CO therapy due to its potent vasodilatory effects. While research into CO-based therapeutics has shown promise in experimental and preclinical settings, clinical translation and widespread adoption remain in the early stages. This review will illuminate the advantageous role of CO as a biomarker alongside the obstacles and challenges associated with its implementation.

Potential Benefits of Green Tea in Prostate Cancer Prevention and Treatment: A Comprehensive Review

Prostate cancer is a prevalent and debilitating disease that necessitates effective prevention and treatment strategies. Green tea, a well-known beverage derived from the Camellia sinensis plant, contains bioactive compounds with potential health benefits, including catechins and polyphenols. This comprehensive review aims to explore the potential benefits of green tea in prostate cancer prevention and treatment by examining existing literature. Green tea possesses antioxidant, anti-inflammatory, and anti-carcinogenic properties attributed to its catechins, particularly epigallocatechin gallate. Epidemiological studies have reported an inverse association between green tea consumption and prostate cancer risk, with potential protection against aggressive forms of the disease. Laboratory studies demonstrate that green tea components inhibit tumor growth, induce apoptosis, and modulate signaling pathways critical to prostate cancer development and progression. Clinical trials and human studies further support the potential benefits of green tea. Green tea consumption has been found to be associated with a reduction in prostate-specific antigen levels, tumor markers, and played a potential role in slowing disease progression. However, challenges remain, including optimal dosage determination, formulation standardization, and conducting large-scale, long-term clinical trials. The review suggests future research should focus on combinatorial approaches with conventional therapies and personalized medicine strategies to identify patient subgroups most likely to benefit from green tea interventions.

Mechanism of HOXA10 in nasopharyngeal carcinoma cell proliferation through the PTPRG-AS1/USP1 axis

Nasopharyngeal carcinoma (NPC) is an epithelial carcinoma arising from the nasopharyngeal mucosal lining. The present study sought to analyze the mechanism by which homeobox A10 (HOXA10) affects NPC cell proliferation. The expression levels of HOXA10/long noncoding RNA (lncRNA) PTPRG antisense RNA 1 (PTPRG-AS1)/ubiquitin-specific peptidase 1 (USP1) in NPC tissues and cells were determined. Cell proliferation was evaluated. The enrichment of HOXA10 on the PTPRG-AS1 promoter was determined. The binding of PTPRG-AS1, HuR, and USP1 to each other was analyzed via RNA immunoprecipitation. USP1 mRNA stability was determined after actinomycin D treatment. The role of the PTPRG-AS1/USP1 axis in NPC cell proliferation was analyzed in combined experiments. The role of HOXA10 in vivo was confirmed in xenograft tumor models. The results revealed that HOXA10 was overexpressed in NPC. HOXA10 downregulation reduced NPC cell proliferation. PTPRG-AS1 and USP1 were upregulated in NPC. HOXA10 bound to the PTPRG-AS1 promoter to increase PTPRG-AS1 expression, and the binding of PTPRG-AS1 to HuR increased USP1 expression. PTPRG-AS1 or USP1 overexpression attenuated the inhibitory effects of HOXA10 downregulation on NPC cell proliferation. HOXA10 downregulation inhibited in vivo NPC proliferation through the PTPRG-AS1/USP1 axis. In conclusion, HOXA10 facilitates NPC cell proliferation in vitro and in vivo through the PTPRG-AS1/USP1 axis.

IGFBP1 promotes the proliferation and migration of lung adenocarcinoma cells through the PPARα pathway

BACKGROUND

The immune status is closely linked to cancer progression, metastasis, and prognosis. Lipid metabolism, crucial for reshaping immune status, plays a key role in regulating the advancement of lung adenocarcinoma (LUAD) and deserves further investigation.

METHODS

This study classifies LUAD patients into different immune subtypes based on lipid metabolism-related genes and compares the clinical characteristics among these subtypes. Single-multi COX analysis screens out key genes related to prognosis, and a risk feature and prognostic model are constructed. Cell cloning, scratch, transwell, western blotting and flow cytometry cell cycle analysis to detect the function of key genes. A subcutaneous tumor animal model is used to investigate the in vivo function and molecular mechanisms of key genes.

RESULTS

LUAD patients are classified into three immune subtypes, among which C3 subtype has lower immune status and higher frequency of gene mutations, and show lower immunoreactivity in immunotherapy. COX analysis identified a prognostic model for four lipid metabolism factors (IGFBP1, NR0B2, PPARA, and POMC). IGFBP1, a core gene in this model, is highly expressed in the C3 subtype. Functionally, knocking down IGFBP1 significantly inhibits tumor cell cloning, scratch, and migration abilities, and downregulates the expression of cell cycle and EMT-related proteins. Knocking down IGFBP1 significantly inhibits tumor burden (P < 0.05). Mechanistically, knocking down IGFBP1 inhibits the activation of PPARα to regulate tumor cell growth.

CONCLUSIONS

This study found that lipid metabolism genes are closely related to LUAD, and IGFBP1 may be a key gene in regulating tumor growth and development.