Articles tagged with Signaling Networks
Researchers found that intrinsically-photosensitive retinal ganglion cells (ipRGCs) use both microvillous and ciliary signaling mechanisms simultaneously. This discovery reveals a new pathway for transmitting light signals to the brain, which may have ancient origins on the evolutionary scale.
A team of scientists used functional near-infrared spectroscopy (fNIRS) to measure brain activity in two key visual regions, the lateral occipital complex (LOC) and fusiform face area (FFA). The study found that fNIRS successfully measured LOC activity but had limitations in detecting FFA activity due to its depth. This research has th...
A new study has identified three genes, MANBA, TNFRSF13B, and EEF1A1, as crucial in the regulation of IgG galactosylation, a trait associated with ageing. The research used GWAS to analyze IgG glycosylation phenotypes in a large sample size, increasing the understanding of this complex posttranslational modification.
The study found that solely the omicron variant influences cell cycle genes, leading to increased p21 expression and a senescence-associated secretory phenotype. This results in premature cellular senescence, potentially contributing to the reported cytokine storm and development of long-COVID.
Researchers at TTUHSC are studying a new approach to inhibit STAT3, a protein associated with 70% of human tumors. Disrupting STAT3 synthesis on ribosomes could lead to new cancer treatments.
Research suggests visfatin stimulates membrane raft clustering, leading to NLRP3 inflammasome activation and podocyte injury. The study highlights the role of membrane raft redox signaling in visfatin-induced inflammation and kidney damage.
Researchers found that 1,5-AF activated AMPK, leading to upregulation of the PGC-1α/BDNF pathway and alleviating aging-related decline in motor cognitive function. The study suggests that 1,5-AF can induce endogenous neurovascular protection, potentially preventing aging-associated brain diseases.
Scientists have discovered a genetic pathway between the heart and brain tied to fainting, suggesting that the heart sends signals back to the brain that can change its function. The study found that vagal sensory neurons play a key role in fainting, with their activation leading to rapid pupil dilation, suppressed heart-rate and breat...
Researchers found a total of 4,721 proteins altered with age in the murine ovary, including upregulated ECM proteins associated with fibrosis. Age-dependent changes also affect immune response pathways and unique immune cell populations.
A new study reveals that sunflowers use different molecular pathways to initiate and maintain tracking movements, involving multiple light signaling pathways. The research also found that depletion of one or more light triggers has little effect on the sunflower's ability to track the sun.
The Cusack group at EMBL Grenoble has provided insights into the interactions of XIAP and RIPK2 molecules involved in gut signalling pathways. This research sheds light on how these molecules interact, revealing a promising drug target for treating inflammatory bowel diseases.
The team created a glycoengineering platform that simplifies the production of customized sugar carbohydrates, known as glycans, which play a crucial role in various therapeutic applications. This innovation enables the engineering of new glycans with unprecedented flexibility, addressing limitations in existing approaches.
Researchers discovered BMAL1 is significantly upregulated in senescent cells and modulates the senescence program through AP-1. The study highlights a previously unappreciated role of BMAL1 in regulating cellular senescence and circadian clock components.
The UK Biobank study found that racial minority status increased dementia risk by 24%, with socio-economic status attenuating this effect. Lifestyle factors such as diet, smoking, physical activity, and sleep were identified as crucial in reducing racial and socio-economic disparities in dementia.
Researchers discovered a new role for extracellular signal-regulated kinase (ERK) in a pathway activated by interferon-gamma that leads to cancer cell death. Hyperactivation of ERK causes stress in cells, triggering cell death through specific proteins DR5 and NOXA.
Researchers classify UGDH as a molecular indicator of tumor progression in multiple cancer types, describing its involvement in key canonical cancer signaling pathways. Methods to inhibit UGDH and its downstream products are also identified.
Researchers at Kyoto University discovered that liverwort Marchantia polymorpha uses gibberellin precursors to produce a signaling molecule aiding survival under shaded conditions. This metabolic pathway inheritance provides insight into the evolution of plant hormone responses.
Researchers identified four novel receptors potentially linking endometrial cancer with polycystic ovary syndrome, highlighting a major pathway involved in the increased EC risk in PCOS. The PI3K-AKT signaling pathway is consistent with a link between PCOS and EC.
Researchers explore kinase inhibitors as targeted therapies for specific CRC subsets, offering hope for improved treatment options. Key findings suggest that uncovering essential kinases for tumor growth can lead to more effective treatment strategies in metastatic or later-stage CRC patients.
Researchers identified how prostate cancer cells achieve cell growth free from usual growth cues and regulators. A protein called PLEKHS1 was found to be a major driver of PI3K activation and cancer growth progression in mouse models.
Researchers discovered that aging alters the pancreas's circadian rhythm by reorganizing its transcriptome. The study found that fibroblasts play a crucial role in regulating this reorganization, which affects the organ's resilience to aging-related pathologies.
Research identifies key molecular signatures and pathways contributing to skeletal muscle strength loss in females with estrogen deficiency. The study found parallel patterns of inhibition and activation across various signaling pathways, including AMPK and calcium signaling.
A NUS study reveals how Wnt signalling regulates colour patterns in butterfly wings, with different ligands and receptors controlling specific areas. The researchers used CRISPR-Cas9 genome editing to test the function of pathway members, showing that they interact and regulate each other.
Researchers propose targeting non-canonical HH/GLI signaling to improve response rate and durability of therapeutic effects exerted by SMO inhibition in melanoma. The findings suggest that combined targeting of hedgehog signaling and BRD4 could provide a novel therapeutic option against melanoma.
Researchers at IRB Barcelona have developed new p38 inhibitors that selectively impair one of the activation pathways of the protein, allowing it to perform many of its normal functions. The inhibitors show therapeutic potential for heart diseases such as cardiac cell death and cardiotoxicity.
Researchers from Rice University and Princeton University have developed a new technology that allows for the live monitoring of signaling protein networks in living cells. The 'live reporter' system uses unobtrusive proteins to tag specific proteins, which can activate fluorescent markers when they become phosphorylated.
Scientists at Karolinska Institutet have identified a group of nerve cells involved in creating negative emotional states and chronic stress. The neurons, which are sensitive to oestrogen levels, were mapped using advanced techniques such as Patch-seq, Neuropixels, and optogenetics.
Researchers developed Precious1GPT, a multimodal transformer-based approach for aging clock development and feature importance analysis. The model utilizes methylation and transcriptomic data to predict biological age and identify disease-related genes, providing a pathway for therapeutic drug discovery.
A new study published in Aging-US has identified the p53-p16/RB-E2F-DREAM complex as a critical regulator of cellular senescence. The researchers found that this complex represses multiple target genes involved in cell cycle regulation, DNA repair, and chromatin structure, leading to the stability of the senescent arrest.
The study reveals that spontaneous waves of neurotransmitter glutamate facilitate dendrite pruning, while a unique protection/punishment machinery strengthens certain connections and eliminates others. Proper pruning is critical for neural development, with insufficient or excessive connections linked to neurophysiological disorders.
Researchers at UNC School of Medicine identified molecular pathways critical for heart development, revealing that the mevalonate pathway regulates embryonic heart cell cycling and signaling molecules. This study provides a foundational data set to identify biological causes of congenital heart disease.
Researchers identified mRNAs and long non-coding RNAs targeted by stress granule proteins, which accumulate AD-associated gene transcripts in these structures. SGs may play a key role in regulating AD development through the impairment of protein neurohomeostasis.
Researchers found that genetic predisposition to lipids, Alzheimer's, and heart disease in the MLXIPL gene locus is shaped by exogenous exposures. Minor alleles of certain variants associated with high triglyceride levels and lower HDL-C levels, which may provide protective effects against Alzheimer's risk.
Researchers tracked immune cell clusters in the aging mouse prostate using highly multiplexed immune profiling. Early adulthood sees myeloid cells, while between 6-12 months old, there's a profound shift to T and B lymphocyte-dominance. The study reveals new insight into prostatic inflammaging and the window for interventions.
Researchers found that GPR141 enhances cell migration and proliferation in breast cancer by activating the p-mTOR/p53 signaling pathway. Silencing GPR141 restores p53 expression and attenuates tumor growth, suggesting its role in regulating breast cancer progression and metastasis.
Increased expression of Musashi 1 on breast cancer cells has significant implications for understanding dormancy and survival in bone marrow. Msi 1 knockdown led to a reduction in cancer stem cells with undetectable PD-L1, suggesting a potential therapeutic target.
Researchers tested zoledronic acid's effects on cellular senescence using multiple approaches. The study found that zoledronic acid killed senescent cells with minimal effects on non-senescent cells and reduced circulating SASP factors, including CCL7, IL-1β, TNFRSF1A, and TGFβ1.
Researchers discover that senescence-associated secretory phenotype (SASP) can induce neuroendocrine transdifferentiation (NED) in breast cancer epithelial cells, promoting tumor progression and aging-related features. SASP's dual role in cancer involves both antitumoral and tumorigenic effects.
Researchers from the ALFA Score Consortium explore how nutrition and physical exercise can positively impact the aging process by modifying epigenetic changes. They find that healthy aging is associated with more tightly condensed chromatin, fewer histone post-translational modifications, and greater regulation by non-coding RNAs.
Researchers have identified distinct senescence subpopulations and dynamic changes in the transcriptome of human cells undergoing senescence. The study provides new understanding of the heterogeneous nature of senescence and its impact on aging diseases.
Researchers identified three novel dual-purpose therapeutic targets using PandaOmics, which could treat both aging and glioblastoma multiforme. The target hypotheses include cyclic nucleotide gated channel subunit alpha 3 (CNGA3), glutamate dehydrogenase 1 (GLUD1) and sirtuin 1 (SIRT1).
A new study presents a chronic wound murine model that characterizes the role of persistent senescent cell accumulation in delayed wound closure. The molecular profiles of senescent cells demonstrate the adverse influence of SASP factors, highlighting a potential root-cause-driven therapeutic strategy.
This study examined the effects of deferoxamine and ferrostatin-1 on salivary gland dysfunction in ovariectomized rats. The researchers found that these compounds reduced inflammation, fibrosis, and improved salivary gland function, suggesting potential treatments for postmenopausal xerostomia.
Researchers found that CUDC-907 selectively induces apoptosis in cells driven to senesce by p53 expression. The compound showed senolytic properties in different models of stress-induced senescence, depending on its inhibitory effects on HDACs and PI3K.
A novel cell signaling pathway has been identified that could be targeted to treat aggressive pancreatic cancers. The High Mobility Group A1 (HMGA1) protein functions as a 'molecular switch' that activates genes required for tumor growth and invasion. Silencing HMGA1 or disrupting FGF19 signals in mouse models resulted in decreased tum...
Researchers found that enhancing NMDAR function via increased serine racemase expression improved attention and cognitive flexibility in middle-aged rats. Upregulating serine racemase in the medial prefrontal cortex also increased glutamatergic synaptic transmission, including NMDAR activity.
Researchers found that exercise releases chemical signals that promote neuronal development in the hippocampus, a crucial area for learning and memory. Astrocytes play a critical role in mediating the effects of exercise on brain health, helping to regulate neuronal activity and prevent hyperexcitability.
Researchers found that p21 knockout mice experienced reduced senescent cell presence, alleviated chronic lung inflammation, and improved fitness. Resident epithelial and endothelial cells played a significant role in mediating the p21-dependent inflammatory response.
Researchers found that higher selenium levels were associated with lower blood pressure and HDL concentration in middle-aged women. The study suggests that selenium may moderate the effect of genetic variants on MetS components, such as waist circumference.
Researchers found a partial response in a patient with pancreatic acinar cell carcinoma, as well as stable disease in 11 patients, when combining riluzole with sorafenib in a phase I trial. The combination was safe and tolerable, and further exploration of its potential is warranted.
Researchers generated a POLDIP2 knockout ARPE-19 cell line and found reduced mitochondrial superoxide levels, consistent with upregulated SOD2. The study demonstrates a potential role of POLDIP2 in regulating oxidative stress in AMD.
Researchers at Salk Institute discover that mechanical and chemical itch sensations are encoded by different brain pathways, which act together to drive chronic itch. The study reveals key molecules regulating these pathways and opens avenues for new therapies.
Research by State University of New York College of Optometry suggests that reading lacks diversity in visual inputs, potentially leading to myopia development. The study proposes a mechanism where sustained reading reduces activation of ON pathways, causing eye growth beyond its focus plane and blurring vision at far distances.
Researchers discuss cortactin's impact on cancer progression by modulating the Wnt5a/ROR1 signaling pathway. Cortactin expression is found in various cancers, including breast and chronic lymphocytic leukemia, suggesting its potential role in promoting metastasis.
Impact Journals will participate as an exhibitor at the AACR Annual Meeting 2023, showcasing Aging's growth in impact factor to 5.955. The meeting theme focuses on Advancing the Frontiers of Cancer Science and Medicine.
A new case series study found that an 8-week methylation-supportive diet and lifestyle program reduced biological age by 4.60 years, with five of six participants exhibiting significant age reversal. The study suggests that this intervention may favorably influence biological age in both sexes.
Researchers found that metformin + leucine (MET+LEU) treatment prevents myotube atrophy by reversing cellular senescence and improving proteostasis. The study used C2C12 myoblasts, aged mouse single myofibers, and human primary myotubes to demonstrate MET+LEU's skeletal muscle cell-autonomous properties.
Research by Whitehead et al. reveals that cellular senescence triggers amyloidosis through changes in small extracellular vesicles and extracellular matrix composition. The study provides novel insights into the formation of aortic medial amyloid and offers potential therapeutic targets for mitigating its effects.
Researchers examine how chronological and biological age impact vaccine effectiveness, finding that both factors influence immune system capacity to mount responses. The study highlights the need for further research into 'immune aging' risk and departures from healthy aging.
A protein called PI3K plays a crucial role in immune cell function, and genetic variations disrupting its signalling have been identified as the root cause of two immunodeficiency disorders. The study reveals how minor disruptions in immune cell signalling can lead to immune deficiency or dysfunction.