![](http://investorshub.advfn.com/images/default_ih_profile2_4848.jpg?cb=0)
Tuesday, October 03, 2017 5:27:57 AM
Ma R1,2, Xie R1,3, Yu C1, Si Y1,2, Wu X1, Zhao L1, Yao Z1, Fang S2, Chen H4, Novakovic V5, Gao C1, Kou J6, Bi Y7, Thatte HS8, Yu B2, Yang S9, Zhou J10, Shi J11,12.
Author information
Abstract
The mechanisms that eliminate activated platelets in inflammation-induced disseminated intravascular coagulation (DIC) in micro-capillary circulation are poorly understood. This study explored an alternate pathway for platelet disposal mediated by endothelial cells (ECs) through phosphatidylserine (PS) and examined the effect of platelet clearance on procoagulant activity (PCA) in sepsis. Platelets in septic patients demonstrated increased levels of surface activation markers and apoptotic vesicle formation, and also formed aggregates with leukocytes. Activated platelets adhered were and ultimately digested by ECs in vivo and in vitro. Blocking PS on platelets or avß3 integrin on ECs attenuated platelet clearance resulting in increased platelet count in a mouse model of sepsis. Furthermore, platelet removal by ECs resulted in a corresponding decrease in platelet-leukocyte complex formation and markedly reduced generation of factor Xa and thrombin on platelets. Pretreatment with lactadherin significantly increased phagocytosis of platelets by approximately 2-fold, diminished PCA by 70%, prolonged coagulation time, and attenuated fibrin formation by 50%. Our results suggest that PS-mediated clearance of activated platelets by the endothelium results in an anti-inflammatory, anticoagulant, and antithrombotic effect that contribute to maintaining platelet homeostasis during acute inflammation. These results suggest a new therapeutic target for impeding the development of DIC.
https://www.ncbi.nlm.nih.gov/pubmed/28694452
Wu X is working together with Brekken!
Extra-mitochondrial prosurvival BCL-2 proteins regulate gene transcription by inhibiting the SUFU tumour suppressor.
Wu X1, Zhang LS1, Toombs J2,3, Kuo YC3,4, Piazza JT1, Tuladhar R1, Barrett Q1, Fan CW1, Zhang X3,4, Walensky LD5,6, Kool M7,8, Cheng SY9,10, Brekken R2,3, Opferman JT11, Green DR12, Moldoveanu T13,14, Lum L1.
Author information
Abstract
Direct interactions between pro- and anti-apoptotic BCL-2 family members form the basis of cell death decision-making at the outer mitochondrial membrane (OMM). Here we report that three anti-apoptotic BCL-2 proteins (MCL-1, BCL-2 and BCL-XL) found untethered from the OMM function as transcriptional regulators of a prosurvival and growth program. Anti-apoptotic BCL-2 proteins engage a BCL-2 homology (BH) domain sequence found in SUFU (suppressor of fused), a tumour suppressor and antagonist of the GLI DNA-binding proteins. BCL-2 proteins directly promote SUFU turnover, inhibit SUFU-GLI interaction, and induce the expression of the GLI target genes BCL-2, MCL-1 and BCL-XL. Anti-apoptotic BCL-2 protein/SUFU feedforward signalling promotes cancer cell survival and growth, and can be disabled with BH3 mimetics-small molecules that target anti-apoptotic BCL-2 proteins. Our findings delineate a chemical strategy for countering drug resistance in GLI-associated tumours and reveal unanticipated functions for BCL-2 proteins as transcriptional regulators.
https://www.ncbi.nlm.nih.gov/pubmed/28945232
Recent CDMO News
- Form 8-K - Current report • Edgar (US Regulatory) • 08/29/2024 08:30:10 PM
- Form ARS - Annual Report to Security Holders • Edgar (US Regulatory) • 08/28/2024 08:34:04 PM
- Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material • Edgar (US Regulatory) • 08/28/2024 08:32:18 PM
- Form DEF 14A - Other definitive proxy statements • Edgar (US Regulatory) • 08/28/2024 08:30:28 PM
- Form 4 - Statement of changes in beneficial ownership of securities • Edgar (US Regulatory) • 07/16/2024 11:50:20 PM
- Form 4 - Statement of changes in beneficial ownership of securities • Edgar (US Regulatory) • 07/16/2024 11:48:19 PM
- Form 4 - Statement of changes in beneficial ownership of securities • Edgar (US Regulatory) • 07/15/2024 08:40:04 PM
- Form 4 - Statement of changes in beneficial ownership of securities • Edgar (US Regulatory) • 07/12/2024 08:30:04 PM
- Form 4 - Statement of changes in beneficial ownership of securities • Edgar (US Regulatory) • 07/11/2024 09:02:39 PM
- Form 4 - Statement of changes in beneficial ownership of securities • Edgar (US Regulatory) • 07/11/2024 09:02:27 PM
- Form 4 - Statement of changes in beneficial ownership of securities • Edgar (US Regulatory) • 07/11/2024 09:01:22 PM
- Form 4 - Statement of changes in beneficial ownership of securities • Edgar (US Regulatory) • 07/11/2024 09:01:05 PM
- Form 4 - Statement of changes in beneficial ownership of securities • Edgar (US Regulatory) • 07/11/2024 09:00:54 PM
- Form 4 - Statement of changes in beneficial ownership of securities • Edgar (US Regulatory) • 07/11/2024 09:00:45 PM
- Form 144 - Report of proposed sale of securities • Edgar (US Regulatory) • 07/11/2024 12:23:26 AM
- Avid Bioservices Reports Financial Results for Fourth Quarter and Fiscal Year Ended April 30, 2024 • GlobeNewswire Inc. • 07/02/2024 08:05:04 PM
- Avid Bioservices to Report Financial Results for Quarter and Fiscal Year Ended April 30, 2024, After Market Close on July 2, 2024 • GlobeNewswire Inc. • 07/01/2024 11:00:21 AM
- Avid Bioservices Earns Committed Badge from EcoVadis for Sustainability Performance • GlobeNewswire Inc. • 05/23/2024 12:05:46 PM
- Avid Bioservices to Participate at Upcoming Investor Conferences • GlobeNewswire Inc. • 05/07/2024 08:05:11 PM
- Avid Bioservices Reports Financial Results for Third Quarter Ended January 31, 2024 • GlobeNewswire Inc. • 04/24/2024 09:25:33 PM
- Avid Bioservices Announces Receipt of Deficiency Notice from Nasdaq Regarding Late Form 10-Q • GlobeNewswire Inc. • 03/20/2024 11:00:10 AM
- Form 8-K - Current report • Edgar (US Regulatory) • 03/07/2024 11:30:11 AM
- Avid Bioservices Announces Pricing of Private Placement of Convertible Notes • GlobeNewswire Inc. • 03/07/2024 04:58:48 AM
- Avid Bioservices Announces Proposed Private Placement of Convertible Notes • GlobeNewswire Inc. • 03/06/2024 09:32:07 PM
- Avid Bioservices Announces Certain Preliminary Financial Results for Third Quarter Ended January 31, 2024 • GlobeNewswire Inc. • 03/06/2024 09:31:28 PM
Element79 Gold Corp Appoints Warren Levy to Board of Directors • ELMGF • Aug 28, 2024 9:51 AM
Integrated Ventures Announces Strategic Entry Into Health & Wellness Industry with Focus on GLP-1 Products • INTV • Aug 28, 2024 8:30 AM
ELEMENT79 ANNOUNCES UPLISTING TO OTCQB VENTURE MARKET • ELMGF • Aug 26, 2024 10:03 AM
North Bay Resources Announces Gold Assays up to 2.2 Ounces per Ton, Fran Gold Project, British Columbia • NBRI • Aug 26, 2024 10:00 AM
PickleJar Unveils Latest Venue Managed Services Innovations in Upcoming Webinar • PKLE • Aug 23, 2024 1:11 PM
Element79 Gold Corp Provides Update on Nevada Portfolio • ELMGF • Aug 23, 2024 8:00 AM