Jose Efren Barragan Avila

ORCID: 0000-0002-9348-909X
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About
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Research Areas
  • Liver Disease Diagnosis and Treatment
  • Telomeres, Telomerase, and Senescence
  • Neutrophil, Myeloperoxidase and Oxidative Mechanisms
  • Dietary Effects on Health
  • PARP inhibition in cancer therapy
  • Epigenetics and DNA Methylation
  • Diabetes and associated disorders
  • Pediatric Hepatobiliary Diseases and Treatments
  • Metabolism and Genetic Disorders
  • Pharmacogenetics and Drug Metabolism
  • Cancer-related Molecular Pathways
  • Computational Drug Discovery Methods
  • RNA regulation and disease
  • Hepatocellular Carcinoma Treatment and Prognosis
  • Inflammasome and immune disorders
  • Lipid metabolism and disorders
  • Cell death mechanisms and regulation
  • Lung Cancer Treatments and Mutations
  • Endoplasmic Reticulum Stress and Disease
  • Drug Transport and Resistance Mechanisms
  • Pancreatitis Pathology and Treatment
  • MicroRNA in disease regulation
  • interferon and immune responses
  • Diet, Metabolism, and Disease
  • Diet and metabolism studies

Heidelberg University
2021-2025

German Cancer Research Center
2021-2024

DKFZ-ZMBH Alliance
2023

Riyadh Elm University
2019

It is currently not well known how necroptosis and responses manifest in vivo. Here, we uncovered a molecular switch facilitating reprogramming between two alternative modes of signaling hepatocytes, fundamentally affecting immune hepatocarcinogenesis. Concomitant necrosome NF-κB activation which physiologically express low concentrations receptor-interacting kinase 3 (RIPK3), did lead to immediate cell death but forced them into prolonged "sublethal" state with leaky membranes, functioning...

10.1016/j.immuni.2023.05.017 article EN cc-by-nc-nd Immunity 2023-06-16

Abstract Cellular senescence is a stress response with broad pathophysiological implications. Senotherapies can induce to treat cancer or eliminate senescent cells ameliorate ageing and age-related pathologies. However, the success of senotherapies limited by lack reliable ways identify senescence. Here, we use nuclear morphology features devise machine-learning classifiers that accurately predict induced diverse stressors in different cell types tissues. As proof-of-principle, these...

10.1038/s41467-024-45421-w article EN cc-by Nature Communications 2024-02-03

The role and molecular mechanisms of intermittent fasting (IF) in non-alcoholic steatohepatitis (NASH) its transition to hepatocellular carcinoma (HCC) are unknown. Here, we identified that an IF 5:2 regimen prevents NASH development as well ameliorates established fibrosis without affecting total calorie intake. Furthermore, the blunted NASH-HCC when applied therapeutically. timing, length, number cycles type diet were critical parameters determining benefits fasting. Combined proteome,...

10.1016/j.cmet.2024.04.015 article EN cc-by Cell Metabolism 2024-05-07

Abstract Inhibition of S6 kinase 1 (S6K1) extends lifespan and improves healthspan in mice, but the underlying mechanisms are unclear. Cellular senescence is a stable growth arrest accompanied by an inflammatory senescence-associated secretory phenotype (SASP). SASP-mediated chronic inflammation contribute to age-related pathology, specific role S6K1 has not been determined. Here we show that deletion does reduce ameliorates aged mouse livers. Using human models senescence, demonstrate...

10.1038/s43587-024-00695-z article EN cc-by Nature Aging 2024-08-29

Abstract Cell fate plasticity enables development, yet unlocked is a cancer hallmark. While transcription master regulators induce lineage-specific genes to restrict plasticity, it remains unclear whether actively suppressed by repressors. Here we computationally predict so-called safeguard repressors for 18 cell types that block phenotypic lifelong. We validated hepatocyte-specific candidates using reprogramming, revealing prospero homeobox protein 1 (PROX1) enhanced hepatocyte identity...

10.1038/s41588-025-02081-w article EN cc-by Nature Genetics 2025-02-13

C57BL/6 mice are widely used for metabolic, cancer, and immunologic studies. High-caloric diets induce a heterogeneous phenotype in mice, with the majority developing obesity metabolic syndrome, while others remain lean metabolically healthy.1Burcelin R. et al.Am J Physiol Endocrinol Metab. 2002; 282: 834-842Crossref PubMed Scopus (235) Google Scholar Western (WDs), methionine-deficient or choline deficient–based to study nonalcoholic fatty liver disease steatohepatitis (NASH), important...

10.1016/j.jcmgh.2021.11.012 article EN cc-by-nc-nd Cellular and Molecular Gastroenterology and Hepatology 2021-12-06

ABSTRACT Inhibition of the nutrient-responsive mTOR (mammalian target rapamycin) signalling pathway including key downstream effector S6 kinase 1 (S6K1) extends lifespan and improves healthspan in mice. However, underlying mechanisms contributing to broad range age-related benefits observed with loss S6K1 are unclear. Cellular senescence is a stable growth arrest accompanied by an inflammatory phenotype (termed senescence-associated secretory phenotype, or SASP). While both cellular...

10.1101/2023.10.17.562098 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2023-10-20

Abstract The role and molecular mechanisms of intermittent fasting (IF) in non-alcoholic steatohepatitis (NASH) its transition to hepatocellular carcinoma (HCC) are unknown. Here, we identified that an IF 5:2 regimen (two non-consecutive days food deprivation per week), initiated the active phase mice, prevents/ameliorates NASH fibrosis as well reduces subsequent HCC development without affecting total calorie intake. timing, length number cycles type diet were all critical parameters...

10.1101/2023.10.23.562885 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2023-10-25

Einleitung Mutiertes Ras (HRAS, NRAS oder KRAS) ist eines der wichtigsten Onkogene bei gastrointestinalen Tumoren und ein prognostisch ungünstiger Faktor. Die Ras-induzierte Tumorigenese verläuft in mehreren Schritten. Aktivierung von onkogenem führt zunächst zur Induktion Seneszenz prämalignen Läsionen. Durch zusätzliche genetische Veränderungen (z.B. Inaktivierung p16INK4A p53) kommt es Entstehung malignen Tumoren.

10.1055/s-0043-1771876 article DE Zeitschrift für Gastroenterologie 2023-08-01
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