Sunday, April 01, 2012 2:43:08 PM
2012Mar22Epub ahead of print [Journal]Blood:
A targeted complement-dependent strategy to improve the outcome of mAb therapy, and characterization in a murine model of metastatic cancer.Elvington M, Huang Y, Morgan BP, Qiao F, van Rooijen N, Atkinson C, Tomlinson S. Department of Microbiology and Immunology, Children's Research Institute, Medical University of South Carolina, Charleston, SC,
"Complement inhibitors expressed on tumor cells provide an evasion mechanism against mAb therapy and may modulate the development of an acquired anti-tumor immune responses. Here we investigate a strategy to amplify mAb-targeted complement activation on a tumor cell, independent of a requirement to target and block complement inhibitor expression or function, which is difficult to achieve in vivo. We constructed a murine fusion protein, CR2Fc, and demonstrated that the protein targets to C3 activation products deposited on a tumor cell by a specific mAb, and amplifies mAb-dependent complement activation and tumor cell lysis in vitro. In syngeneic models of metastatic lymphoma (EL4) and melanoma (B16), CR2Fc significantly enhanced the outcome of mAb therapy. Subsequent studies using the EL4 model with various genetically modified mice and macrophage depleted mice revealed that CR2Fc enhanced the therapeutic effect of mAb therapy via both macrophage dependent Fc?R-mediated antibody-dependent cellular cytotoxicity, and by direct complement mediated lysis. Complement activation products can also modulate adaptive immunity, but we found no evidence that either mAb or CR2Fc treatment had any effect on an anti-tumor humoral or cellular immune response. CR2Fc represents a potential adjuvant treatment to increase the effectiveness of mAb therapy of cancer.
Recent CDMO News
- Avid Bioservices to Participate in Craig-Hallum Bioprocessing Conference • GlobeNewswire Inc. • 09/12/2024 08:05:27 PM
- Form 10-Q - Quarterly report [Sections 13 or 15(d)] • Edgar (US Regulatory) • 09/09/2024 08:43:56 PM
- Form 8-K - Current report • Edgar (US Regulatory) • 09/09/2024 08:19:30 PM
- Avid Bioservices Reports Financial Results for First Quarter Ended July 31, 2024 • GlobeNewswire Inc. • 09/09/2024 08:05:31 PM
- U.S. Futures Rise Amid Inflation Report Anticipation; Oil Prices Climb on Hurricane Threat and Supply Concerns • IH Market News • 09/09/2024 10:09:14 AM
- Avid Bioservices to Report Financial Results for First Quarter of Fiscal Year 2025 After Market Close on September 9, 2024 • GlobeNewswire Inc. • 09/03/2024 08:05:20 PM
- 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
Basanite, Inc. Appoints Ali Manav as Interim Chief Executive Officer • BASA • Oct 3, 2024 9:15 AM
Integrated Ventures Announces Launch of MedWell Facilities, LLC and Lease Agreement with Giant Fitness Clubs • INTV • Oct 3, 2024 8:45 AM
Beyond the Horizon: Innovative Drug Combinations Offer New Hope for Alzheimer's and More • NVS • Oct 3, 2024 8:45 AM
Transforming Alzheimer's Treatment: Innovative Combinations to Boost Cognition • PFE • Oct 2, 2024 9:00 AM
Unitronix Corp Unveils Cryptocurrency Investment Portfolio Strategy • UTRX • Oct 2, 2024 8:40 AM
Integrated Ventures, Inc Reports Total 2024 Revenues Of $5,863,935 vs $3,862,849 for 2023. • INTV • Oct 1, 2024 9:00 AM