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Occurrence, Phenotypic and Molecular Characteristics of Extended-Spectrum Beta-Lactamase-Producing Escherichia coli in Healthy Turkeys in Northern Egypt.

Poultry is one of the most important reservoirs for zoonotic multidrug-resistant pathogens. The indiscriminate use of antimicrobials in poultry production is a leading factor for development and dissemination of antimicrobial resistance. This study aimed to describe the prevalence and antimicrobial resistance of E. coli isolated from healthy turkey flocks of different ages in Nile delta region, Egypt. In the current investigation, 250 cloacal swabs were collected from 12 turkey farms in five governorates in the northern Egypt. Collected samples were cultivated on BrillianceTM ESBL agar media s

Integrated Multiomics Analyses of the Molecular Landscape of Sarcopenia in Alcohol-Related Liver Disease.

BACKGROUND: Skeletal muscle is a major target for ethanol-induced perturbations, leading to sarcopenia in alcohol-related liver disease (ALD). The complex interactions and pathways involved in adaptive and maladaptive responses to ethanol in skeletal muscle are not well understood. Unlike hypothesis-driven experiments, an integrated multiomics-experimental validation approach provides a comprehensive view of these interactions. METHODS: We performed multiomics analyses with experimental validation to identify novel regulatory mechanisms of sarcopenia in ALD. Studies were done in a comprehensi

Postoperative Innate Immune Dysregulation, Proteomic, and Monocyte Epigenomic Changes After Colorectal Surgery: A Substudy of a Randomized Controlled Trial.

BACKGROUND: Colorectal surgery is associated with moderate-to-severe postoperative complications in over 25% of patients, predominantly infections. Monocyte epigenetic alterations leading to immune tolerance could explain postoperative increased susceptibility to infections. This research explores whether changes in monocyte DNA accessibility contribute to postoperative innate immune dysregulation. METHODS: Damage-associated molecular patterns (DAMPs) and ex vivo cytokine production capacity were measured in a randomized controlled trial (n = 100) in colorectal surgery patients, with addition

Chromatin accessibility of the jejunum in two high-yielding laying hen strains under divergent mineral phosphorus supply during the transition to egg laying.

Optimizing dietary phosphorus (P) levels is crucial for sustainable egg production, hen welfare, productivity, and reducing excessive P excretion. Dietary P influences systemic physiological responses, including gene expression dynamics and epigenetic regulation, particularly in the gut. Epigenetic modifications, including chromatin accessibility, play a crucial role in gene regulation by integrating genetic and environmental signals. It is hypothesized that age, strain, and mineral P levels together influence the epigenetic and transcriptional landscape in the jejunum during the transition to

Comprehensive single-cell chromatin and transcriptomic profiling of peripheral immune cells in nonsegmental vitiligo.

BACKGROUND: Nonsegmental vitiligo (NSV) is an autoimmune condition characterized by melanocyte loss. While skin-specific mechanisms have been well studied, systemic immune dysregulation contributing to NSV pathogenesis remains unclear. OBJECTIVES: To use a multi-omic single-cell approach to investigate circulating immune cells in NSV, integrating transcriptional and chromatin accessibility data. METHODS: An integrative single-cell RNA sequencing (scRNAseq)/single-cell assay for transposase-accessible chromatin sequencing (scATACseq) analysis was conducted on peripheral blood mononuclear cell

RAG1 and RAG2 expression by B cell subsets from human tonsil and peripheral blood.

It has been suggested that B cells acquire the capacity for secondary V(D)J recombination during germinal center (GC) reactions. The nature of these B cells remains controversial. Subsets of tonsil and blood B cells and also individual B cells were examined for the expression of recombination-activating gene (RAG) mRNA. Semiquantitative analysis indicated that RAG1 mRNA was present in all tonsil B cell subsets, with the largest amount found in naive B cells. RAG2 mRNA was only found in tonsil naive B cells, centrocytes, and to a lesser extent in centroblasts. Neither RAG1 nor RAG2 mRNA was rou

CardioChrom Reconstructs the Human Cardiac Virtual Epigenome from Single-Nucleus Transcriptomes.

BACKGROUND: Matched epigenomic profiling remains scarce in human heart failure, limiting regulatory interpretation of single-nucleus ribonucleic acid (RNA) sequencing data. We developed CardioChrom, a cardiac-specialized framework that reconstructs chromatin accessibility, histone H3 lysine 27 acetylation (H3K27ac), and histone H3 lysine 27 trimethylation (H3K27me3) from single-nucleus RNA profiles. METHODS: CardioChrom was developed using same-nucleus human heart datasets jointly measuring RNA with chromatin accessibility by assay for transposase-accessible chromatin (ATAC), H3K27ac, or H3K2

Antibiotic-Free Gene Vectors: A 25-Year Journey to Clinical Trials.

Until very recently, the major use, for gene therapy, specifically of linear or circular DNA, such as plasmids, was as ancillary products for viral vectors' production or as a genetic template for mRNA production. Thanks to targeted and more efficient physical or chemical delivery techniques and to the refinement of their structure, non-viral plasmid DNA are now under intensive consideration as pharmaceutical drugs. Plasmids traditionally carry an antibiotic resistance gene for providing the selection pressure necessary for maintenance in a bacterial host. Nearly a dozen different antibiotic-f

Declining FXR expression coordinates neonatal beta cell mass development with microbial bile acid metabolism maturation in mice.

AIMS/HYPOTHESIS: Diet switch during weaning induces gut microbiome maturation, accompanied by the formation of adequate functional beta cell mass. Bile acid (BA), an essential microbial metabolite, regulates host glucose homeostasis by binding to its main receptor, farnesoid X receptor (FXR, encoded by NR1H4). However, the precise roles of microbial BA metabolism and FXR signalling in neonatal beta cell development are still unclear. METHODS: Islet FXR levels were determined at different perinatal stages. Postnatal changes in gut microbiome and BA profiles were examined in mice, with changes

NK92 Разоблачение антиBCMA CAR и Secreted TRAIL для лечения множественной миеломы: предварительная оценка in Vitro.

Множественная миелома (ММ) стала свидетелем улучшения качества жизни пациентов благодаря совершенствованию терапевтических подходов. В частности, аллогенная трансплантация стволовых клеток, протеаозные ингибиторы, иммуномодулятивные препараты и моноклонные антитела способствовали повышению качества жизни. Недавно появилась многообещающая авеню с клетками химерика антигенного рецептора (CAR) Т, направленными против антигена созревания клеток B-клеток (BCMA), широко выраженная на клетках MM. Чтобы уменьшить риски, связанные с аллогенными Т-клетками, мы изучили потенциал выражения BCMA CAR в нату

Clinico-biological significance of suppressor of cytokine signaling 1 expression in acute myeloid leukemia.

Suppressor of cytokine signaling 1 (SOCS1) protein, which encodes a member of signal transducers and activators of transcription-induced inhibitors, takes part in a negative regulation of cytokine signaling. The mechanism of SOCS1 in tumor carcinogenesis is complex and there have been no studies concerning the clinic-biologic implication of SOCS1 expression in acute myeloid leukemia (AML). Here, we first identified that higher bone marrow (BM) SOCS1 expression was closely associated with older age, FLT3-ITD, NPM1 and DNMT3A mutations, but negatively correlated with CEBPA mutation in patients w

Тип общей генетической и нейроиммунной архитектуры 1 диабет с нейрокогнитивными признаками.

Тип 1 диабет, особенно в детстве, ассоциируется с изменяющимися нейрокогнитивными признаками, однако основные биологические механизмы неясны. Здесь мы интегрируем результаты общегеномной ассоциации с одноклеточных эпигеномических профилей и показываем этот тип 1 Наследственность диабета обогащается доступным хроматином клеток мозга человека, в первую очередь микроглией, через нейроразвитие до взрослого возраста. Анализ генетической корреляции, скорректированный по методу Bonferroni, показывает отрицательную корреляцию типа 1 диабет с интеллектом, исполнительными функциями и биполярным расстрой

Chimeric Antigen Receptor Design and Efficacy in Ovarian Cancer Treatment.

Our increased understanding of tumour biology gained over the last few years has led to the development of targeted molecular therapies, e.g., vascular endothelial growth factor A (VEGF-A) antagonists, poly[ADP-ribose] polymerase 1 (PARP1) inhibitors in hereditary breast and ovarian cancer syndrome (BRCA1 and BRCA2 mutants), increasing survival and improving the quality of life. However, the majority of ovarian cancer (OC) patients still do not have access to targeted molecular therapies that would be capable of controlling their disease, especially resistant or relapsed. Chimeric antigen rece

Non-viral approaches in CAR-NK cell engineering: connecting natural killer cell biology and gene delivery.

Natural Killer (NK) cells are exciting candidates for cancer immunotherapy with potent innate cytotoxicity and distinct advantages over T cells for Chimeric Antigen Receptor (CAR) therapy. Concerns regarding the safety, cost, and scalability of viral vectors has ignited research into non-viral alternatives for gene delivery. This review comprehensively analyses recent advancements and challenges with non-viral genetic modification of NK cells for allogeneic CAR-NK therapies. Non-viral alternatives including electroporation and multifunctional nanoparticles are interrogated with respect to CAR

Histone Modifier KANSL2 является практически осуществимым биомаркером в Мультимиломе.

Эпигенетические отклонения являются ключевыми движущими силами множественной миеломы, однако адресная терапия, использующая эпигенетические изменения, еще не установлена. Объединяя клинические и молекулярные наборы пациентов с множественной миеломой с непредвзятым генетическим экраном в vivo, мы определили подгруппу 2 (KANSL2) КАТ8, регулирующую комплекс NSL, как гистонную послетрансляционную модификацию, связанную с онкогене. Высокое выражение KANSL2 было связано с неблагоприятным прогнозом у пациентов с множественной миеломой. Генетические модели " наживы " и " потери функцион

Advances in preclinical hematopoietic stem cell models and possible implications for improving therapeutic transplantation.

Hematopoietic stem cell transplantation (HSCT) is a treatment for many malignant, congenital, and acquired hematologic diseases. Some outstanding challenges in the HSCT field include the paucity of immunologically-matched donors, our inability to effectively expand hematopoeitic stem cells (HSCs) ex vivo, and the high infection risk during engraftment. Scientists are striving to develop protocols to generate, expand, and maintain HSCs ex vivo, however these are not yet ready for clinical application. Given these problems, advancing our understanding of HSC specification, regulation, and differ

CAR-NK cell therapy for hematological malignancies.

AbstractChimeric antigen receptor (CAR)-natural killer (NK) cells represent a novel cell therapy platform distinguished from CAR T cells by their more favorable safety profile, easier off-the-shelf allogeneic manufacturing and consequent scalability, and their innate cytotoxicity without needing previous sensitization. CAR-NK cells derived from a variety of sources have been used against hematologic malignancies in several clinical trials, showing significant therapeutic responses and efficacy without severe adverse effects. Limitations that are being addressed in CAR-NK cell therapy include c

Tumor heterogeneity as a driver of drug resistance and its implications for personalized therapy.

Tumors are highly dynamic diseases characterized by significant heterogeneity. They consist of multiple cellular populations with distinct properties that respond differently to therapeutic pressure. This heterogeneity may arise from spatial variation across tumor regions (spatial heterogeneity) as well as from temporal changes during tumor evolution and treatment (temporal heterogeneity). As a consequence, drug-resistant subclones often emerge under therapy and contribute to treatment failure. Advances in single-cell and spatial multi-omics technologies enable precise quantification of tumor

Translation of Epigenetics in Cell-Free DNA Liquid Biopsy Technology and Precision Oncology.

Technological advancements in cell-free DNA (cfDNA) liquid biopsy have triggered exponential growth in numerous clinical applications. While cfDNA-based liquid biopsy has made significant strides in personalizing cancer treatment, the exploration and translation of epigenetics in liquid biopsy to clinical practice is still nascent. This comprehensive review seeks to provide a broad yet in-depth narrative of the present status of epigenetics in cfDNA liquid biopsy and its associated challenges. It highlights the potential of epigenetics in cfDNA liquid biopsy technologies with the hopes of enha

Convergence of mRNA technology and chimeric antigen receptor therapy: targeted technology optimizing targeted therapy.

Engineering cells to express chimeric antigen receptors (CARs) represents a novel approach in cancer immunotherapy, demonstrating remarkable efficacy in the treatment of hematologic malignancies while also encountering numerous challenges. Against the backdrop of the widespread application of COVID-19 mRNA vaccines, the integration of mRNA technology to produce CAR cells and enhance CAR therapies marks the cutting edge of cancer treatment innovation, offering potential solutions to the challenges faced by traditional CAR therapies. This convergence offers distinct advantages. It enables the ge

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… The RNP enters the nucleus to specifically knock out host genes. ( C ) Generating allogeneic CAR T cells by nuclease/transposase: nuclease (e.g., TRC1-2, megaTAL nuclease) or transposase (e.g., super PiggyBac (SPB) transposase, SB 100 X transposase) mRNA is delivered into allogeneic T cells via electroporation … Transposases also show promise in CAR cells production. …