Search results for: Anti-AT2 Receptor (extracellular)-ATTO-488 Antibody
#34535048 2021/09/20 To Up
EGFR binding Fc domain-drug conjugates: stable and highly potent cytotoxic molecules mediate selective cell killing.The exposition of cancer cells to cytotoxic doses of payload is fundamental for the therapeutic efficacy of antibody drug conjugates (ADCs) in solid cancers. To maximize payload exposure, tissue penetration can be increased by utilizing smaller-sized drug conjugates which distribute deeper into the tumor. Our group recently explored small human epidermal growth factor receptor 2 (HER2) targeting Fc antigen binding fragments (Fcabs) for ADC applications in a feasibility study. Here, we expand this concept using epidermal growth factor receptor (EGFR) targeting Fcabs for the generation of site-specific auristatin-based drug conjugates. In contrast to HER2-targeting Fcabs, we identified novel conjugation sites in the EGFR-targeting Fcab scaffold that allowed for higher DAR enzymatic conjugation. We demonstrate feasibility of resultant EGFR-targeting Fcab-drug conjugates that retain binding to half-life prolonging neonatal Fc receptor (FcRn) and EGFR and show high serum stability as well as target receptor mediated cell killing at sub-nanomolar concentrations. Our results emphasize the applicability of the Fcab format for the generation of drugÂ conjugates designed for increased penetration of solid tumors and potential FcRn-driven antibody-like pharmacokinetics.
Sebastian JÃ¤ger, Stephan Dickgiesser, Jason Tonillo, Stefan Hecht, Harald Kolmar, Christian SchrÃ¶ter
1445 related Products with: EGFR binding Fc domain-drug conjugates: stable and highly potent cytotoxic molecules mediate selective cell killing.100ul1 kit2 Pieces/Box1 kit25 Tests1000 assays150 ug1 kit25 Tests
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#34534459 2021/09/08 To Up
Broad cross-reactivity across sarbecoviruses exhibited by a subset of COVID-19 donor-derived neutralizing antibodies.Many anti-severe acute respiratory syndrome coronavirus 2 (anti-SARS-CoV-2) neutralizing antibodies target the angiotensin-converting enzyme 2 (ACE2) binding site on viral spike receptor-binding domains (RBDs). Potent antibodies recognize exposed variable epitopes, often rendering them ineffective against other sarbecoviruses and SARS-CoV-2 variants. Class 4 anti-RBD antibodies against a less-exposed, but more-conserved, cryptic epitope could recognize newly emergent zoonotic sarbecoviruses and variants, but they usually show only weak neutralization potencies. Here, we characterize two class 4 anti-RBD antibodies derived from coronavirus disease 2019 (COVID-19) donors that exhibit breadth and potent neutralization of zoonotic coronaviruses and SARS-CoV-2 variants. C118-RBD and C022-RBD structures reveal orientations that extend from the cryptic epitope to occlude ACE2 binding and CDRH3-RBD main-chain H-bond interactions that extend an RBD Î² sheet, thus reducing sensitivity to RBD side-chain changes. A C118-spike trimer structure reveals rotated RBDs that allow access to the cryptic epitope and the potential for intra-spike crosslinking to increase avidity. These studies facilitate vaccine design and illustrate potential advantages of class 4 RBD-binding antibody therapeutics.
Claudia A Jette, Alexander A Cohen, Priyanthi N P Gnanapragasam, Frauke Muecksch, Yu E Lee, Kathryn E Huey-Tubman, Fabian Schmidt, Theodora Hatziioannou, Paul D Bieniasz, Michel C Nussenzweig, Anthony P West, Jennifer R Keeffe, Pamela J Bjorkman, Christopher O Barnes
2073 related Products with: Broad cross-reactivity across sarbecoviruses exhibited by a subset of COVID-19 donor-derived neutralizing antibodies.100 0.2 mg100ug100 ul Product tipe: Anti100ug Lyophilized100ug100ug100ug100ug100ug100 ug
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#34534012 2021/09/17 To Up
Differential Antibody Response to SARS-CoV-2 Antigens in Recovered and Deceased Iranian COVID-19 Patients.The coronavirus infectious disease 2019 (COVID-19), which is initiated by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has imposed critical challenges to global health. Understanding the kinetic of SARS-CoV-2-specific IgM and IgG responses in different subsets of COVID-19 patients is crucial to get insight into the humoral immune response elicited against the virus. We investigated IgM and IgG responses against SARS-CoV-2 nucleocapsid (N) and receptor-binding domain (RBD) of spike protein in two groups of recovered and deceased COVID-19 patients. The levels of IgM and IgG specific to N and RBD proteins were detected by ELISA. N- and RBD-specific IgM was higher in deceased patients in comparison with recovered patients, while there was no significant difference in N- and RBD-specific IgG between the two groups. A significant correlation was observed between IgG and IgM titers against RBD and N, in both groups of patients. These results argue against impaired antibody response in deceased COVID-19 patients.
Faezeh Maghsood, Danesh Hassani, Vahid Salimi, Gholam Ali Kardar, Jalal Khoshnoodi, Abbas Ghaderi, Seyyed Reza Raeeskarami, Abdorrahman Rostamian, Monireh Sadat Seyyedsalehi, Raoufeh Ahmadi Fesharaki, Mahmood Jeddi-Tehrani, Amir-Hassan Zarnani, Mohammad Mehdi Amiri, Fazel Shokri
1869 related Products with: Differential Antibody Response to SARS-CoV-2 Antigens in Recovered and Deceased Iranian COVID-19 Patients.200ul100ug Lyophilized200ul100ug Lyophilized100ug Lyophilized200ul200ug200ul100ug Lyophilized
#34533616 2021/09/17 To Up
Lung transplantation for idiopathic multicentric Castleman disease: potential efficacy and tolerability of a humanized anti-interleukin-6 receptor monoclonal antibody.Idiopathic multicentric Castleman disease (iMCD) is a rare polyclonal lymphoproliferative disease caused by the overrepresentation of interleukin-6 (IL-6). Tocilizumab (TCZ) is a humanized monoclonal antibody that binds to the IL-6 receptor and is approved for the treatment of iMCD. The efficacy and tolerability of TCZ in patients with iMCD undergoing lung transplantation (LTx) remain unknown.
Yasuaki Tomioka, Shinji Otani, Shin Tanaka, Kazuhiko Shien, Ken Suzawa, Kentaroh Miyoshi, Hiromasa Yamamoto, Mikio Okazaki, Seiichiro Sugimoto, Masaomi Yamane, Shinichi Toyooka
2040 related Products with: Lung transplantation for idiopathic multicentric Castleman disease: potential efficacy and tolerability of a humanized anti-interleukin-6 receptor monoclonal antibody.25 µg100ul100 TESTS 100 UG100ul0.2 mg 50 UG100ul0.1 mg1 ml25 µg0.2 mg
#34532635 2021/08/27 To Up
A new era has begun: Treatment of atopic dermatitis with biologics.The era of biologics for the treatment of moderate-to-severe atopic dermatitis (AD) began in 2017 with the approval of dupilumab, a monoclonal antibody that binds to the Î±-subunit of the interleukin IL-4 receptor. Until then, only conventional immunosuppressants were available for systemic treatment, of which only cyclosporine is approved for the treatment of severe AD. In the meantime, the therapeutic landscape of AD has been changing rapidly, and additional biologics have been developed which target IL-13, the IL-31 receptor, OX40, and OX40L, among others. Many of these substances have already shown promising results in phase 1, 2, and in some cases also phase 3 trials. In June 2021, tralokinumab, an IL-13 antibody, has been approved in Europe for the treatment of moderate-to-severe AD in adults. In addition to antibody-based therapies, "small molecules" that, e.g., inhibit Janus kinases enrich the armamentarium of systemic AD therapies. With all these agents, not only will many more targeted therapies become available, but also will the complex and heterogeneous pathophysiological processes of this disease be better understood.
Dora StÃ¶lzl, Stephan Weidinger, Katharina Drerup1ml1ml100ug Lyophilized100ug1 mg50ul100ug100ug100ug Lyophilized100ug200
#34532530 2018/11/05 To Up
Protocol for Proximity Ligation Assay (PLA) and Microscopy Analysis of Epidermal Growth Factor Receptor (EGFR) Homodimerization.Oncogenic drivers play central roles in tumorigenesis as well as in tumor cell survival and proliferation. Mutations of the epidermal growth factor receptor gene () that result in constitutive activation of the receptor tyrosine kinase have been identified as oncogenic drivers in a subset of non-small cell lung cancer (NSCLC). PCR-based assays are usually adopted for the detection of mutations, but no methods to detect EGFR activation that are not based on mutation identification have been established in the clinical setting. We describe a proximity ligation assay (PLA) used to visualize and quantitate EGFR homodimerization in NSCLC cell lines and tissue specimens. Rabbit monoclonal antibodies against EGFR were conjugated to PLUS or MINUS PLA oligonucleotide arms using Probemaker. Annealing of the PLUS and MINUS PLA probes occurred when two EGFR monomers were in close proximity, and repeat sequences in the annealed oligonucleotide complexes were amplified then recognized by a fluorescently-labeled oligonucleotide probe. PLA signals were detected and counted with a fluorescence microscope. We demonstrate the detection of EGFR homodimers by PLA analysis in a quantitative manner in both NSCLC cell lines and tissue samples obtained by transbronchial lung biopsy. PLA methods are a new tool for the detection and quantitation of protein-protein interactions such as homodimers, heterodimers, and fusion proteins.
Keiichi Ota, Taishi Harada
1072 related Products with: Protocol for Proximity Ligation Assay (PLA) and Microscopy Analysis of Epidermal Growth Factor Receptor (EGFR) Homodimerization.1 kit(96 Wells)100.00 ug0.1ml (1mg/ml)1 kit(96 Wells)5 x 50 ug20 ug5 x 50 ug100ug100ug50 ug2 Pieces/Box50 ug
#34532438 // To Up
Correlation between thyroid autoantibodies and cardiovascular disease in patients with stages 3-5 chronic kidney disease.Chronic kidney disease (CKD) is associated with thyroid disease and cardiovascular disease (CVD). To date, little is known about the association of thyroid autoantibodies with renal function or cardiac function in patients with CKD.
Weicheng Xu, Shiyi Liang, Yuxiang Huang, Shili Zhao, Yunfang Zhang, Yongqiang Li
1058 related Products with: Correlation between thyroid autoantibodies and cardiovascular disease in patients with stages 3-5 chronic kidney disease.50 UG50ug 96 tests
#34532116 // To Up
A dual-targeted molecular therapy of PP242 and cetuximab plays an anti-tumor effect through EGFR downstream signaling pathways in colorectal cancer.Epidermal growth factor receptor (EGFR) and its downstream Ras-mitogen-activated protein kinase kinase (MAPKK, MEK)-extracellular regulated protein kinase (ERK) signaling pathway and phosphatidylinositol 3-kinase (PI3K)-protein kinase B (Akt)-mammalian target of rapamycin (mTOR) signaling pathway play important roles in the pathogenesis of colorectal cancer (CRC). The combination therapy of anti-EGFR and anti-mTOR needs to be explored.
Linghui Kong, Qun Zhang, Jialei Mao, Lei Cheng, Xiao Shi, Lixia Yu, Jing Hu, Mi Yang, Li Li, Baorui Liu, Xiaoping Qian
1306 related Products with: A dual-targeted molecular therapy of PP242 and cetuximab plays an anti-tumor effect through EGFR downstream signaling pathways in colorectal cancer.
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