iFlpMosaics enable the multispectral barcoding and high-throughput comparative analysis of mutant and wild-type cells.

To understand gene function, it is necessary to compare cells carrying the mutated target gene with normal cells. In most biomedical studies, the cells being compared are in different mutant and control animals and, therefore, do not experience the same epigenetic changes and tissue microenvironment. The experimental induction of genetic mosaics is essential to determine a gene cell-autonomous function and to model the etiology of diseases caused by somatic mutations.

Evidence That Peripheral Leptin Resistance in Omental Adipose Tissue and Liver Correlates with MASLD in Humans.

Leptin regulates lipid metabolism, maximizing insulin sensitivity; however, peripheral leptin resistance is not fully understood, and its contribution to metabolic dysfunction-associated steatotic liver disease (MASLD) is unclear. This study evaluated the contribution of the leptin axis to MASLD in humans. Forty-three participants, mostly female (86.

Pancreatic Pseudocyst and Obesity: Video Case Report of Management with the One-Stage Procedure.

Reports of pancreatic pseudocyst drainage during metabolic bariatric surgery are extremely rare. Our patient is a 38-year-old female suffering from obesity grade IV and presents a persistent symptomatic pancreatic pseudocyst 8 months after an episode of acute biliary pancreatitis. After an extensive evaluation and considering other treatment options, our multidisciplinary team and the patient decided to perform a one-stage procedure consisting of laparoscopic cystogastrostomy, cholecystectomy, and one-anastomosis gastric bypass.

iSuRe-HadCre is an essential tool for effective conditional genetics.

Methods for modifying gene function at high spatiotemporal resolution in mice have revolutionized biomedical research, with Cre-loxP being the most widely used technology. However, the Cre-loxP technology has several drawbacks, including weak activity, leakiness, toxicity, and low reliability of existing Cre-reporters. This is mainly because different genes flanked by loxP sites (floxed) vary widely in their sensitivity to Cre-mediated recombination.

Incongruence between transcriptional and vascular pathophysiological cell states.

The Notch pathway is a major regulator of endothelial transcriptional specification. Targeting the Notch receptors or Delta-like ligand 4 (Dll4) dysregulates angiogenesis. Here, by analyzing single and compound genetic mutants for all Notch signaling members, we find significant differences in the way ligands and receptors regulate liver vascular homeostasis.