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Cell C - Europe PMC

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Last Updated: 10 January 2023

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Autocrine EGF and TGF-α promote primary and acquired resistance to ALK/c-Met kinase inhibitors in non-small-cell lung cancer.

However, further clarification regarding whether tumor cells themselves can mediate drug resistance by concealing growth factors needs to be addressed. In EBC-1 cells, we first tested growth factors to find autocrine epidermal growth factor and transforming growth factor alpha, which caused primary resistance to ALK inhibitor TAE684 in H3122 cells and the c-MET-specific inhibitor SGX-523. Both EGF and TGF-u03b1 overexpression in two NSCLC cell lines, as well as TAE684 and SGX-523, caused injury to TAE684 and SGX-523. Patients with high levels of EGF and TGF-u03b1 have developed primary resistance to crizotinib, according to a clinical study.

Source link: https://europepmc.org/article/MED/36583451


The Effect of Recombinant Fusion Peptide Capsular Biosynthesizing Enzymes A, C Streptococcus agalactiae and Anti-Cancer Peptide against Cell Line Hela by Real-time RT- PCR and Flow cytometry

Several studies have been published on cervical cancer-related challenges with the Streptococcus agalactiae peptide and its capsules. On the HeLa cell, this study sought to determine the inhibitory effects of the recombinant anti-cancer protein CpsC-L-ACAN. The HeLa cell was used to test the cell-killing effects of various concentrations of CpsA-CpsC-L-ACAN against the HeLa cell using the 3-2-2, 5-diphenyltetrazolium bromide method. The CpsA-CpsC-L-ACAN's antibacterial activity were determined by the minimum inhibitory concentration test and the disk diffusion test. CpsA-CpsC-L-ACAN protein-treated Hela cells killed 50% of cancer cells in 24 hours, and after the CpsA-CpsC-L-ACAN antibody treatment of Hela cells with CpsA-CpsC-L-ACAN protein, the expression of apoptosis genes, caspase -3 and Bax increased 16 and 6 times, respectively, at 6 times. According to the results of the flow cytometry test, the cancer cell population in CpsA-CpsC-L-ACAN's treatment progressed from the living phase to the apoptotic phase.

Source link: https://europepmc.org/article/PPR/PPR591782


Cell-specific effects of the sole C. elegans Daughterless/E protein homolog, HLH-2, on nervous system development.

We investigated to see how canonical proneural class I/III bHLH complexes are responsible for neurogenesis throughout the entire Caenorhabditis elegans nervous system. The E proteins in vertebrates and HLH-2 in C. elegans are usually assumed to function by interaction with a specific, lineage-specific proneural class II bHLH subunit encoded by Daughterless in flies. Although our reports support the functionality of proneuronal class I/II bHLH complexes in a variety of lineages within a nervous system, we find that their function is not universal but rather limited by lineage, cell type, and components of differentiation programs affected.

Source link: https://europepmc.org/article/MED/36595352


The natural killer cell-associated rs9916629-C allele is a novel genetic risk factor for fatal COVID-19.

COVID-19's occurrence is attributed to individual genetic host factors. The rs9916629-C/T genetic polymorphism was discovered in an indirect way in the human NK cell repertoire towards highly pro-inflammatory CD56 bright NK cells. Fatal COVID-19, was more common in younger patients wearing the Fc/RIIIa-V/V/V/V/V/V/V/V/V/V/V/V/V and in older patients with the KLRC2 del variant. Patients with the rs9916629-C allele also have a significantly elevated risk of fatal COVID-19, and the genetic variants' identification could be used as a diagnostic marker for hospitalized COVID-19 patients.

Source link: https://europepmc.org/article/MED/36515427


C-Reactive Protein Levels After Esophagectomy are Associated with Increased Surgical Complications and Poor Prognosis in Esophageal Squamous Cell Carcinoma Patients.

However, the relationship between postoperative CRP levels and short- and long-term results of esophageal squamous cell carcinoma patients following esophagectomy is uncertain. Method We looked at the records of 543 ESCC patients who underwent total esophagectomy with gastric conduit reconstruction at Kumamoto University Hospital between August 2010 and July 2021. Mean CRP values were highest on day three on day 3, and CRP values after day 3 were correlated with grade > 2 complications based on the Clavien-Dindo classification. The optimal cut-off value for CRP day 3 levels was determined to be 12. 19 mg/dL by a receiver operating characteristic curve analysis. According to multivariate logistic regression studies, elevated CRP day 3 levels were highly correlated with grade >2 difficulties. Following esophagectomy, the researchers suggest that CRP day 3 levels can be a good biomarker for predicting postoperative complications, and that CRP day 7/8 levels may have potential prognostic use for ESCC patients.

Source link: https://europepmc.org/article/MED/36581721


The C. elegans Anchor Cell Transcriptome: Ribosome Biogenesis Drives Cell Invasion through Basement Membrane

As migration through BM is often stochastic, captureing gene expression profiles of cells actively transmigrating BM in vivo remains elusive. We created an AC transcriptome during BM breaching utilizing the standardized timing of C. elegans' anchor cell invasion. An influx of ribosome production occurred shortly after AC specification, prompting the translation of proteins mediating BM removal. These studies reveal key roles for ribosome biogenesis and endomembrane expansion in cell invasion by BM and the establishment of the AC transcriptome as a tool to determine the mechanisms that explain BM transmigration.

Source link: https://europepmc.org/article/PPR/PPR589738


Activin B and Activin C Have Opposing Effects on Prostate Cancer Progression and Cell Growth

We investigated the effect of proteins called activins on prostate cell line development and examined their expression in prostate cancer biopsy samples from patients with different degrees of tumor severity. According to the aims of this research, the objective of this study was to determine the expression of TGFB family members in primary prostate cancer tissue and the phenotypic effects of activateins on prostate cell growth. Tissue cores of prostate adenocarcinoma and normal prostate were immuno-stained and protein expression was compared between samples from different Gleason grades. The metastatic PC3 cells' growth and migration of the metastatic PC3 cells was increased in cores with higher Gleason patterns and activin B overexpression, leading to an increased proliferation and migration of PNT1A cells relative to untreated vector controls, but not to empty vector controls. In conclusion, increased activin B and reduced activin C expression is associated with increasing prostate tumor size and may therefore be useful as prognostic markers of aggressive prostate cancer.

Source link: https://europepmc.org/article/MED/PMC9817897


Activin B and Activin C Have Opposing Effects on Prostate Cancer Progression and Cell Growth.

Current prostate cancer prognostic and diagnostic tests are not able to tell the difference between aggressive and latent cancer. The objective of this research was to determine the expression of TGFB family members in primary prostate tumour tissue and the phenotypic effect of activins on prostate cell growth. Tissue cores of prostate adenocarcinoma and normal prostate were immuno-stained and protein expression was assessed between samples of different Gleason grades. Activin B expression was increased in cores with higher Gleason values and activation of activin B, inhibiting cell proliferation and migration of the metastatic PC3 cells relative to empty vector controls, but PNT1A cells' growth and migration were slower than those with empty vector controls. In conclusion, raised activin B and decreased activin C expression are both linked to increasing prostate tumor quality and therefore may be useful as prognostic markers of aggressive prostate cancer.

Source link: https://europepmc.org/article/MED/36612143


Function of cell adhesion molecules in differentiation of ray sensory neurons in C. elegans.

Although cell adhesion molecules have been studied for many years as vital players in neural connections, we have yet to decipher the code by which CAMs encode synaptic specificity. We investigated the effect of mutations in CAM genes on the morphology and synapses of a series of sensory neurons in the C. elegans male tail. The encoding CAMs are encoded by ten genes in B-type ray sensory neurons. In axon commissures, B-type sensory neurons fasciculate with a second form of ray sensory neuron, the A-type. In B-type axon advice, we discovered a CAM expressed in A-type in B-type axon instructions additively with a CAM expressed in B-type, as well as the absence of a CAM expressed in B-type affects A-type axon recommendations. Overall, single and multiple mutants of CAM genes had no effect on ray neuron trajectories and tissue of synaptic organs.

Source link: https://europepmc.org/article/MED/36573343

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions