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Total 18 results found since Jan 2013.

Uncovering Tumor-Promoting Roles of Activin A in Pancreatic Ductal Adenocarcinoma
Adv Sci (Weinh). 2023 Apr 21:e2207010. doi: 10.1002/advs.202207010. Online ahead of print.ABSTRACTPancreatic ductal adenocarcinoma (PDAC) is one of the most lethal cancers with high incidence rates of metastasis and cachexia. High circulating activin A, a homodimer of inhibin βA subunits that are encoded by INHBA gene, predicts poor survival among PDAC patients. However, it still raises the question of whether activin A suppression renders favorable PDAC outcomes. Here, the authors demonstrate that activin A is abundantly detected in tumor and stromal cells on PDAC tissue microarray and mouse PDAC sections. In orthotopic ...
Source: Adv Data - April 21, 2023 Category: Epidemiology Authors: Seok-Yeong Yu Yi Luan Siyuan Tang Amirhossein Abazarikia Rosemary Dong Thomas C Caffrey Michael A Hollingsworth David Oupicky So-Youn Kim Source Type: research

c-Jun-mediated miR-19b expression induces endothelial barrier dysfunction in an in vitro model of hemorrhagic shock
CONCLUSION: Transcription factor c-Jun is inducible by hypoxia/reoxygenation, binds to and activates the miR-19b promoter. Using an in-vitro model of hemorrhagic shock, our findings identified a novel cellular mechanism whereby hypoxia/ reoxygenation increases miR-19b transcription by inducing c-Jun and leads to syndecan-1 decrease and endothelial cell barrier dysfunction. This finding supports that miR-19b could be a potential therapeutic target for hemorrhage shock.PMID:36224531 | DOI:10.1186/s10020-022-00550-0
Source: Molecular Medicine - October 12, 2022 Category: Molecular Biology Authors: Feng Wu Jian-Ying Wang Brooke Dorman Ahmad Zeineddin Rosemary Ann Kozar Source Type: research

11,12-Diacetyl-carnosol Protects SH-SY5Y Cells from Hydrogen Peroxide Damage through the Nrf2/HO-1 Pathway
CONCLUSION: These results demonstrate that NO.20 protects SH-SY5Y cells from H2O2-induced neurotoxicity by activating the Nrf2/HO-1 pathway. Thus, the neuroprotective and antioxidative stress effects of NO.20 may make it a promising neuroprotective compound for AD treatment.PMID:35620405 | PMC:PMC9129961 | DOI:10.1155/2022/4376812
Source: Evidence-based Complementary and Alternative Medicine - May 27, 2022 Category: Complementary Medicine Authors: Qingyi Luo Weiyan Hu Haofei Yu Rongping Zhang Xinglong Chen Source Type: research

Cancers, Vol. 14, Pages 2380: Endocrine Therapy-Resistant Breast Cancer Cells Are More Sensitive to Ceramide Kinase Inhibition and Elevated Ceramide Levels Than Therapy-Sensitive Breast Cancer Cells
In this study, we have investigated how alterations in sphingolipids promote cell survival in ET-resistant breast cancer. We have performed LC-MS-based targeted sphingolipidomics of tamoxifen-sensitive and -resistant MCF-7 breast cancer cell lines. Follow-up studies included treatments of cell lines and patient-derived xenograft organoids (PDxO) with small molecule inhibitors; cytometric analyses to measure cell death, proliferation, and apoptosis; siRNA-mediated knockdown; RT-qPCR and Western blot for gene and protein expression; targeted lipid analysis; and lipid addback experiments. We found that tamoxifen-resistant cel...
Source: Cancers - May 12, 2022 Category: Cancer & Oncology Authors: Purab Pal Alec Millner Svetlana E. Semina Rosemary J. Huggins Logan Running Diana S. Aga Debra A. Tonetti Rachel Schiff Geoffrey L. Greene G. Ekin Atilla-Gokcumen Jonna Frasor Tags: Article Source Type: research

Upregulation of OPA1 by carnosic acid is mediated through induction of IKK γ ubiquitination by parkin and protects against neurotoxicity.
In conclusion, the mechanism by which CA counteracts the toxicity of 6-OHDA is through modulation of mitochondrial dynamics and upregulation of OPA1 via activation of the parkin/IKKγ/p65 pathway. PMID: 31705926 [PubMed - as supplied by publisher]
Source: Food and Chemical Toxicology - November 5, 2019 Category: Food Science Authors: Lin CY, Chen WJ, Fu RH, Tsai CW Tags: Food Chem Toxicol Source Type: research

PINK1/parkin-mediated mitophagy pathway is related to neuroprotection by carnosic acid in SH-SY5Y cells.
In conclusion, CA appears to counteract the neurotoxicity of 6-OHDA by activating PINK1/parkin-mediated mitophagy. PMID: 30707903 [PubMed - as supplied by publisher]
Source: Food and Chemical Toxicology - January 29, 2019 Category: Food Science Authors: Lin CY, Tsai CW Tags: Food Chem Toxicol Source Type: research

Decidual ACVR2A regulates extravillous trophoblast functions of adhesion, proliferation, migration and invasion in vitro
Publication date: April 2018Source: Pregnancy Hypertension, Volume 12Author(s): Hannah E.J. Yong, Padma Murthi, Bill Kalionis, Rosemary J. Keogh, Shaun P. BrenneckeAbstractDecidual stromal cells form the largest proportion of maternal cells at the maternal-fetal interface. Our aim was to investigate the role of the pre-eclampsia associated decidual activin receptor, ACVR2A, in regulating trophoblast functions at this interface. St-T1b and HTR-8/SVneo cell lines were used to model decidual stromal and trophoblast cells respectively. St-T1b conditioned medium inhibited HTR-8/SVneo adhesion, proliferation, migration and invas...
Source: Pregnancy Hypertension: An International Journal of Womens Cardiovascular Health - July 10, 2018 Category: OBGYN Source Type: research

Carnosic acid prevents COL1A2 transcription through the reduction of Smad3 acetylation via the AMPK α1/SIRT1 pathway.
Carnosic acid prevents COL1A2 transcription through the reduction of Smad3 acetylation via the AMPKα1/SIRT1 pathway. Toxicol Appl Pharmacol. 2017 Dec 15;: Authors: Zhao Y, Shi X, Ding C, Feng D, Li Y, Hu Y, Wang L, Gao D, Tian X, Yao J Abstract Carnosic acid (CA), a major bioactive component in rosemary extract, has many biological and pharmaceutical activities. Smad3 acetylation can regulate the transcription of type I α2 collagen (COL1A2), which is the major component of the extracellular matrix (ECM). The aim of the current study was to evaluate whether CA inhibits COL1A2 transcription via the re...
Source: Toxicology and Applied Pharmacology - December 15, 2017 Category: Toxicology Authors: Zhao Y, Shi X, Ding C, Feng D, Li Y, Hu Y, Wang L, Gao D, Tian X, Yao J Tags: Toxicol Appl Pharmacol Source Type: research

Insulin-like growth factor 1 signaling is essential for mitochondrial biogenesis and mitophagy in cancer cells Metabolism
Mitochondrial activity and metabolic reprogramming influence the phenotype of cancer cells and resistance to targeted therapy. We previously established that an insulin-like growth factor 1 (IGF-1)-inducible mitochondrial UTP carrier (PNC1/SLC25A33) promotes cell growth. This prompted us to investigate whether IGF signaling is essential for mitochondrial maintenance in cancer cells and whether this contributes to therapy resistance. Here we show that IGF-1 stimulates mitochondrial biogenesis in a range of cell lines. In MCF-7 and ZR75.1 breast cancer cells, IGF-1 induces peroxisome proliferator–activated receptor γ coac...
Source: Journal of Biological Chemistry - October 13, 2017 Category: Chemistry Authors: Amy Lyons, Michael Coleman, Sarah Riis, Cedric Favre, Ciara H. O'Flanagan, Alexander V. Zhdanov, Dmitri B. Papkovsky, Stephen D. Hursting, Rosemary O'Connor Tags: Molecular Bases of Disease Source Type: research