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Full-Text Articles in Cell Biology

Adipocyte Acly Facilitates Dietary Carbohydrate Handling To Maintain Metabolic Homeostasis In Females, Sully Fernandez, John M. Viola, Annmarie Torres, Martina Wallace, Sophie Trefely, Steven Zhao, Hayley C. Affronti, Jivani M. Gengatharan, David A. Guertin, Nathaniel W. Snyder, Christian M. Metallo, Kathryn E. Wellen May 2019

Adipocyte Acly Facilitates Dietary Carbohydrate Handling To Maintain Metabolic Homeostasis In Females, Sully Fernandez, John M. Viola, Annmarie Torres, Martina Wallace, Sophie Trefely, Steven Zhao, Hayley C. Affronti, Jivani M. Gengatharan, David A. Guertin, Nathaniel W. Snyder, Christian M. Metallo, Kathryn E. Wellen

Open Access Articles

Sugars and refined carbohydrates are major components of the modern diet. ATP-citrate lyase (ACLY) is upregulated in adipocytes in response to carbohydrate consumption and generates acetyl-coenzyme A (CoA) for both lipid synthesis and acetylation reactions. Here, we investigate the role of ACLY in the metabolic and transcriptional responses to carbohydrates in adipocytes and unexpectedly uncover a sexually dimorphic function in maintaining systemic metabolic homeostasis. When fed a high-sucrose diet, Acly(FAT-/-) females exhibit a lipodystrophy-like phenotype, with minimal fat accumulation, insulin resistance, and hepatic lipid accumulation, whereas Acly(FAT-/-) males have only mild metabolic phenotypes. We find that ACLY is ...


Crispr-Delivery Particles Targeting Nuclear Receptor-Interacting Protein 1 (Nrip1) In Adipose Cells To Enhance Energy Expenditure, Yuefei Shen, Jessica L. Cohen, Sarah M. Nicoloro, Mark Kelly, Batuhan Yenilmez, Felipe Henriques, Emmanouela Tsagkaraki, Yvonne J. K. Edwards, Xiaodi Hu, Randall H. Friedline, Jason K. Kim, Michael P. Czech Nov 2018

Crispr-Delivery Particles Targeting Nuclear Receptor-Interacting Protein 1 (Nrip1) In Adipose Cells To Enhance Energy Expenditure, Yuefei Shen, Jessica L. Cohen, Sarah M. Nicoloro, Mark Kelly, Batuhan Yenilmez, Felipe Henriques, Emmanouela Tsagkaraki, Yvonne J. K. Edwards, Xiaodi Hu, Randall H. Friedline, Jason K. Kim, Michael P. Czech

Open Access Articles

RNA-guided, engineered nucleases derived from the prokaryotic adaptive immune system CRISPR-Cas represent a powerful platform for gene deletion and editing. When used as a therapeutic approach, direct delivery of Cas9 protein and single-guide RNA (sgRNA) could circumvent the safety issues associated with plasmid delivery and therefore represents an attractive tool for precision genome engineering. Gene deletion or editing in adipose tissue to enhance its energy expenditure, fatty acid oxidation, and secretion of bioactive factors through a "browning" process presents a potential therapeutic strategy to alleviate metabolic disease. Here, we developed "CRISPR-delivery particles," denoted CriPs, composed of nano-size complexes of Cas9 ...


Adipocyte-Specific Hypoxia-Inducible Gene 2 Promotes Fat Deposition And Diet-Induced Insulin Resistance, Marina Distefano, Rachel J. Roth Flach, Ozlem Senol-Cosar, Laura V. Danai, Joseph V. Virbasius, Sarah M. Nicoloro, Juerg R. Straubhaar, Sezin Dagdeviren, Martin Wabitsch, Olga T. Gupta, Jason K. Kim, Michael P. Czech Sep 2016

Adipocyte-Specific Hypoxia-Inducible Gene 2 Promotes Fat Deposition And Diet-Induced Insulin Resistance, Marina Distefano, Rachel J. Roth Flach, Ozlem Senol-Cosar, Laura V. Danai, Joseph V. Virbasius, Sarah M. Nicoloro, Juerg R. Straubhaar, Sezin Dagdeviren, Martin Wabitsch, Olga T. Gupta, Jason K. Kim, Michael P. Czech

Open Access Articles

OBJECTIVE: Adipose tissue relies on lipid droplet (LD) proteins in its role as a lipid-storing endocrine organ that controls whole body metabolism. Hypoxia-inducible Gene 2 (Hig2) is a recently identified LD-associated protein in hepatocytes that promotes hepatic lipid storage, but its role in the adipocyte had not been investigated. Here we tested the hypothesis that Hig2 localization to LDs in adipocytes promotes adipose tissue lipid deposition and systemic glucose homeostasis.

METHOD: White and brown adipocyte-deficient (Hig2fl/fl x Adiponection cre+) and selective brown/beige adipocyte-deficient (Hig2fl/fl x Ucp1 cre+) mice were generated to investigate the role of Hig2 in ...