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At least 163 records · Page 9Linked to original sources
PubMed2025

Interconnected study of molecular pathways: miR-137 as a central element at the intersection of lipid metabolism and prostate carcinogenesis.

OBJECTIVE: To evaluate the roles of miR-137 and its target genes in lipid metabolism and prostate tumorigenesis. METHODS: We used a series of bioinformatic approaches to establish the relationship between miR-137 and its target genes. We mapped the metabolic pathways of interest in the Reactome database and identified the central target genes of miR-137 in this pathway using four platforms: Reactome, miRDB, miRmap, and TargetScan. To assess the expression and association with clinical parameters, we obtained information from the UALCAN, OncoDB, and GEPIA2 databases using a dataset of patients with prostate cancer from The Cancer Genome Atlas. For functional enrichment analysis and construction of the protein-protein interaction network, we used the Kyoto Encyclopedia of Genes and Genomes, Gene Ontology, and STRING. RESULTS: Our in silico study of The Cancer Genome Atlas database revealed that miR-137 is underexpressed in tumor tissues, and its reduction is associated with poor prognosis. An intriguing set of eight genes within the PPARα pathway: PPARGC1A, PPARGC1B, NCOA1, NCOA2, NCOA3, MED1, MED27, and ESRRA displayed synergy, positive correlations, and synchronized expression patterns in adipose, hepatic, and prostatic tissues, all linked to the enigmatic processes of metabolic regulation. Among the highlighted genes, ESRRA was overexpressed in the malignant environment, whereas its counterparts remained underexpressed. The plot was thickened with associations between the expression of NCOA1, NCOA3, and MED27, lymph node involvement, and the overexpression of several genes linked to advanced prostate cancer stages. An intriguing pattern emerged, with patients exhibiting reduced disease-free survival overexpressing NCOA2, NCOA3, MED27, and ESRRA. CONCLUSION: This study elucidates the possibility that miR-137 subtly modulates metabolic genes in prostate cancer, suggesting its latent therapeutic potential as a biomarker for disease progression. BACKGROUND: ■ The reduction of miR-137 in tumor tissues is associated with a worse prognosis. BACKGROUND: ■ miR-137 has eight oncogenically relevant target genes acting in the PPARα lipid pathway. BACKGROUND: ■ NCOA1, NCOA3, MED27, and ESRRA are associated with advanced prostate cancer. BACKGROUND: ■ miR-137 exhibits significant clinical potential by repressing the activation of pathways that influence prostate tumorigenesis in hyperstimulated metabolic environments. BACKGROUND: Prostate cancer progression is sustained by the simultaneous activation of pathways involving lipid uptake and de novo synthesis. In this context, miR-137 inhibits adipogenic differentiation and may reduce lipid uptake by tumor cells by modulating the PPAR/ p160/ESRRA axis, considerably attenuating metabolic effects and suppressing prostate tumorigenesis.

Male↗
PubMed2026

Intersecting experimental evolution and CRISPR screens to identify novel toxin resistance loci.

Understanding toxin resistance in insects is key to appreciating niche adaptations but remains challenging due to its often-polygenic basis. A well-known example is the specialized association of Drosophila sechellia with noni fruit (Morinda citrifolia), which is toxic to other insects, including Drosophila simulans and Drosophila melanogaster. The main noni toxin is octanoic acid (OA), but the mechanisms that determine sensitivity or resistance to OA in different species remain unclear. Here, we experimentally evolved D. simulans with increased OA resistance, identifying multiple loci under selection. Cross-referencing these with a genome-wide, OA resistance CRISPR screen in a D. melanogaster cell line highlighted two proteins: Kraken, a putative detoxification enzyme expressed in digestive and renal tissues, and Alkbh7, a mitochondrial protein linked to fatty acid metabolism. Both genes show elevated expression in D. sechellia and OA-resistant D. simulans. In D. melanogaster, kraken mutants are more OA-sensitive, while Alkbh7 overexpression increased OA resistance. Mutation of these genes in D. sechellia reduced OA tolerance. Our identification of genes contributing to OA resistance in laboratory and natural contexts demonstrates how complementary selection approaches can provide insights into complex mechanisms of toxin susceptibility and adaptation. Such methods could have practical applications in the characterization of natural and artificial insecticides.

Animals↗
PubMed1975

[Use of scanning electron microscopy for studying the intersection of lymphocytes with tumor cells].

With the aid of steroscan microscopy it was found that the state of surface membranes of the cells under study showed a significant change during the interaction of lymphocytes of BALB/C mice--bearers of methylcholantrene-induced sarcoma--with autologous tumour cells. Lymphocytes separated from the autologous tumour cells by a millipore filter formed long cytoplasmic processes which passed through the filter pores and came into close contact with tumour cells. Tumour cells acquired a spherical shape, and became swollen; "openings" appeared in the surface membrane, and this led to cell lysis.

Animals↗
PubMed1992

[Effect of immunosuppressants FK506 and rapamycin on the function of progesterone receptor: protein "p59-HBI", intersection between immunology and endocrinology?].

In the absence of hormonal ligand, inactive, heterooligomeric, 8-10S steroid receptor complexes include a p59 protein (apparent M(r) approximately 59 kDa) bound to th heat shock protein hsp90 (apparent M(r) approximately 90 kDa), which itself binds to the ligand binding domain LBD of the receptor molecule, p59 is thus an hsp binding immunophilin HBI, which, through its interaction with a chaperone, may intervene in several cellular functions. We report that, in cell-free experiments at 0 degrees C, FK506 and rapamycin do not release p59 nor hsp90 from the 9.5S rabbit uterus progesterone receptor, suggesting that the binding of p59 to hsp90 does not interfere with the rotamase site of HBI. There is no "transformation/activation" of the receptor, but an up to 2 fold increase in progesterone agonist and antagonist binding to the receptor is observed. It is suggested that a functional interaction between HBI and receptor activity may be mediated by hsp90.

Animals↗
PubMed1991

[Dental treatment concepts on a point of intersection].

Dentists appear to plan the treatment of one and the same patient very differently. Each dentist uses both professional and relational concepts, but the differences in treatment plans are in this article just partially explained.

Dental Care↗
PubMedDate not supplied

Attention, the intersection of cost and quality in health care.

A method for assessing health care technology that models the demand on the clinician's attention exerted by patients' data (diagnostic and therapeutic) can provide a means for simultaneously reducing the cost and improving the quality of health care. The attentional demand exerted by patients' data can be measured by the amount of uncertainty in the data. Uncertainty can be expressed mathematically by the concept of entropy in information theory.

Health Services Needs and Demand↗