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Full-Text Articles in Medicine and Health Sciences
Lactate-Mediated Epigenetic Reprogramming Regulates Formation Of Human Pancreatic Cancer-Associated Fibroblasts, Tushar D. Bhagat, Dagny Von Ahrens, Meelad Dawlaty, Yiyu Zou, Joelle Baddour, Abhinav Achreja, Hongyun Zhao, Lifeng Yang, Brijesh Patel, Changsoo Kwak, Gaurav S. Choudhary, Shanisha Gordon-Mitchell, Srinivas Aluri, Sanchari Bhattacharyya, Srabani Sahu, Yiting Yu, Matthias Bartenstein, Orsi Giricz, Masako Suzuki, Davendra Sohal, Sonal Gupta, Paola A. Guerrero, Surinder K. Batra, Michael Goggins, Ulrich Steidl, John Greally, Beamon Agarwal, Kith Pradhan, Debabrata Banerjee, Deepak Nagrath, Anirban Maitra, Amit Verma
Lactate-Mediated Epigenetic Reprogramming Regulates Formation Of Human Pancreatic Cancer-Associated Fibroblasts, Tushar D. Bhagat, Dagny Von Ahrens, Meelad Dawlaty, Yiyu Zou, Joelle Baddour, Abhinav Achreja, Hongyun Zhao, Lifeng Yang, Brijesh Patel, Changsoo Kwak, Gaurav S. Choudhary, Shanisha Gordon-Mitchell, Srinivas Aluri, Sanchari Bhattacharyya, Srabani Sahu, Yiting Yu, Matthias Bartenstein, Orsi Giricz, Masako Suzuki, Davendra Sohal, Sonal Gupta, Paola A. Guerrero, Surinder K. Batra, Michael Goggins, Ulrich Steidl, John Greally, Beamon Agarwal, Kith Pradhan, Debabrata Banerjee, Deepak Nagrath, Anirban Maitra, Amit Verma
Journal Articles: Biochemistry & Molecular Biology
Even though pancreatic ductal adenocarcinoma (PDAC) is associated with fibrotic stroma, the molecular pathways regulating the formation of cancer associated fibroblasts (CAFs) are not well elucidated. An epigenomic analysis of patient-derived and de-novo generated CAFs demonstrated widespread loss of cytosine methylation that was associated with overexpression of various inflammatory transcripts including CXCR4. Co-culture of neoplastic cells with CAFs led to increased invasiveness that was abrogated by inhibition of CXCR4. Metabolite tracing revealed that lactate produced by neoplastic cells leads to increased production of alpha-ketoglutarate (aKG) within mesenchymal stem cells (MSCs). In turn, aKG mediated activation of the …
Ca2+ Sensor Synaptotagmin-1 Mediates Exocytosis In Mammalian Photoreceptors, Justin J. Grassmeyer, Asia L. Cahill, Cassandra L. Hays, Cody Barta, Rolen M. Quadros, Channabasavaiah B. Gurumurthy, Wallace B. Thoreson
Ca2+ Sensor Synaptotagmin-1 Mediates Exocytosis In Mammalian Photoreceptors, Justin J. Grassmeyer, Asia L. Cahill, Cassandra L. Hays, Cody Barta, Rolen M. Quadros, Channabasavaiah B. Gurumurthy, Wallace B. Thoreson
Journal Articles: Pharmacology & Experimental Neuroscience
To encode light-dependent changes in membrane potential, rod and cone photoreceptors utilize synaptic ribbons to sustain continuous exocytosis while making rapid, fine adjustments to release rate. Release kinetics are shaped by vesicle delivery down ribbons and by properties of exocytotic Ca2+ sensors. We tested the role for synaptotagmin-1 (Syt1) in photoreceptor exocytosis by using novel mouse lines in which Syt1 was conditionally removed from rods or cones. Photoreceptors lacking Syt1 exhibited marked reductions in exocytosis as measured by electroretinography and single-cell recordings. Syt1 mediated all evoked release in cones, whereas rods appeared capable of some slow Syt1-independent release. Spontaneous …