Navigation Links
Semafore's PI3 Kinase Inhibitor SF1126 is a Vascular Targeted Conjugate in Phase I Clinical Trials in Solid Tumors and Multiple Myeloma

SAN DIEGO, April 14 /PRNewswire/ -- Semafore Pharmaceuticals Inc. announced today on the occasion of a poster presentation at the 2008 AACR Annual Meeting that its integrin-targeted PI3 kinase inhibitor, SF1126, was shown to cause significant tumor regression in combination with rapamycin in a renal cell carcinoma mouse model. The combination of SF1126 (20 mg/kg i.v., 3x/week) with rapamycin (1.5 mg/kg i.p., 3x/week) administered simultaneously showed a 54 percent regression of the tumor volume versus starting tumor volume. This efficacy was significantly better than treatment with either agent alone or where the two agents were administered sequentially.

Angiogenesis plays a major role in the progression of renal cell carcinoma, and SF1126 was shown to dose-dependently inhibit endothelial cell proliferation in an in vitro model, while the mTOR inhibitor rapamycin (sirolimus) had no significant effect. SF1126 also showed dose-dependent cell signal (pAkt) inhibition in both renal cell carcinoma cells and endothelial cells under stimulation conditions using the growth factors IGF, VEGF and Bv8.

"There is significant biological rationale for combining targeted therapeutic agents in oncology to improve efficacy," said Dr. Dennis McKeever, Semafore's Chief Executive Officer. "The combination of SF1126, our lead product candidate, with rapamycin exhibited synergistic anticancer effects, and this increased effect was optimal when the agents were administered in combination as opposed to sequentially. SF1126 is currently in Phase I clinical trials in both solid tumors and multiple myeloma."

About SF1126

SF1126 is a small molecule conjugate containing a pan-PI3K inhibitor that selectively inhibits all PI3K class I isoforms and other key members of the PI3K superfamily, including DNA-PK and mTOR. A major factor in tumor resistance to approved chemotherapy agents is thought to be the activation of the PI3K/PTEN pathway. As a result, it is thought that inhibiting this pathway via SF1126 could cause the resetting of sensitivity to approved agents and exhibit synergistic anticancer effects.

About Semafore

Semafore is a clinical stage drug discovery and development company focused on small molecule modulators of the PI3 kinase and PTEN cell signaling pathway, a promising target pathway for multiple disorders, including the company's focus -- cancer. Semafore is one of the first biopharmaceutical companies to focus on both PI3K and PTEN and has successfully discovered and is developing a portfolio of drug candidates addressing these targets. For more information see the company's Web site at


Corporate Media & Investor

Semafore Pharmaceuticals Inc. Russo Partners LLC

Sandi Yurichuk Timothy Engel

(650) 576-5769 (212) 845-4242

SOURCE Semafore Pharmaceuticals Inc.
Copyright©2008 PR Newswire.
All rights reserved

Related medicine technology :

1. EntreMed to Highlight ENMD-2076 Kinase Inhibitor at 2008 AACR Annual Meeting
2. SuperGen Reports Initiation of Multi-arm Phase 1b Trial of Novel Tyrosine Kinase Inhibitor
3. Semafores PI3 Kinase Inhibitor SF1126 is Active Against Tumor and Tumor Cells and Synergizes with Standard Chemotherapy Agents
4. Telik Announces Preclinical Data Demonstrating Anti-Cancer Activity of Dual Inhibitors of Aurora Kinase and VEGFR2
5. Telik Announces Presentation of Preclinical Data on Dual Inhibitors of Aurora Kinases and VEGFR2
6. BiPar Sciences Expands Clinical Program for BSI-201, a Novel DNA Repair Inhibitor, in Brain Cancer
7. Dynamis Therapeutics, Inc. Discovers RAGE Inhibitor
8. CSL Behring Submits BLA Requesting Approval of C1-Esterase Inhibitor for the Treatment of Hereditary Angioedema
9. NexGenix Pharmaceuticals Presents Data on a Novel Small Molecule Inhibitor of Heat Shock Protein 90 (Hsp90) at the GTCbio Cancer Drugs Research & Development Conference
10. Pharmacyclics Announces Data and Publication Characterizing Highly-Selective HDAC Inhibitor
11. Ardea Biosciences Presents Preclinical Data Demonstrating Favorable Resistance Profiles for Non-Nucleoside Reverse Transcriptase Inhibitors for the Treatment of Human Immunodeficiency Virus
Post Your Comments:
(Date:6/23/2016)... ITASCA, Ill. , June 23, 2016  In a startling ... states are failing their residents by lacking a comprehensive, proven plan ... , a definitive ranking of how states are tackling the ... rating to only four states – Kentucky , ... and Vermont . Of the 28 failing states, ...
(Date:6/23/2016)... , June 23, 2016 Bracket , a ... its next generation clinical outcomes platform, Bracket eCOA (SM) ... on June 26 – 30, 2016 in Philadelphia ... electronic Clinical Outcome Assessment product of its kind to fully ... Bracket eCOA 6.0 is a flexible platform for ...
(Date:6/23/2016)... N.J. , June 23, 2016  Guerbet announced ... Premier Inc.,s Supplier Horizon Award . ... year, Guerbet was recognized for its support of Premier ... creation through clinical excellence, and commitment to lower costs. ... to receive this recognition of our outstanding customer service ...
Breaking Medicine Technology:
(Date:6/25/2016)... ... , ... Conventional wisdom preaches the benefits of moderation, whether it’s a matter ... bar too high can result in disappointment, perhaps even self-loathing. However, those who set ... , Research from reveals that behind the tendency to set low ...
(Date:6/24/2016)... ... ... Marcy was in a crisis. Her son James, eight, was out of control. Prone to ... , “When something upset him, he couldn’t control his emotions,” remembers Marcy. “If there ... my other children and say he was going to kill them. If we were ...
(Date:6/24/2016)... ... June 24, 2016 , ... Comfort Keepers® of San Diego, CA is ... Road To Recovery® program to drive cancer patients to and from their cancer treatments. ... the highest quality of life and ongoing independence. Getting to and from medical ...
(Date:6/24/2016)... NY (PRWEB) , ... June 24, 2016 , ... ... Haute Living, is proud to recognize Dr. Barry M. Weintraub as a prominent ... “the most beautiful women in the world, and the most handsome men, look ...
(Date:6/24/2016)... ... 2016 , ... Venture Construction Group (VCG) sponsors Luke’s Wings ... at the Woodmont Country Club at 1201 Rockville Pike, Rockville, Maryland, 20852. The ... members that have been wounded in battle and their families. Venture Construction Group is ...
Breaking Medicine News(10 mins):