Antibody-drug conjugates: Resurgent anticancer agents with multi-targeted therapeutic potential

2022 ◽  
pp. 108106
Author(s):  
Claudia Ceci ◽  
Pedro Miguel Lacal ◽  
Grazia Graziani
2021 ◽  
Vol 9 (8) ◽  
Author(s):  
Mony Ung ◽  
Jean Lacaze ◽  
Eleonora Maio ◽  
Florence Dalenc

Antibody–drug conjugates (ADCs) are a new class of anticancer agents that combine cytotoxic agents attached by a linker to a monoclonal antibody. These engineered drugs can selectively deliver a cytotoxic payload to targeted cancer cells and the local microenvironment (bystander effect), thereby increasing activity and reducing off-target toxicity. The association of ADCs with other anti-cancer therapies is therefore promising. Trastuzumab-emtansine was the first approved ADC in breast cancer (BC), specifically for the management of human epidermal growth factor receptor 2 (HER2)-positive advanced breast cancer. New ADCs are in development in BC. Some have shown meaningful clinical benefit and have been recently approved, such as trastuzumab deruxtecan in HER2-positive trastuzumab emtansine (T-DM1) pretreated BC and Trop-2 guided sacituzumab govitecan in triple-negative BC. Trastuzumab deruxtecan also has potential clinical activity in HER2-low BC thanks to a bystander effect. In this article, we review the ADCs under development in advanced BC.


2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Carmen Criscitiello ◽  
Stefania Morganti ◽  
Giuseppe Curigliano

AbstractAntibody–drug conjugates (ADCs) are a relatively new class of anticancer agents designed to merge the selectivity of monoclonal antibodies with cell killing properties of chemotherapy. They are commonly described as the “Trojan Horses” of therapeutic armamentarium, because of their capability of directly conveying cytotoxic drug (payloads) into the tumor space, thus transforming chemotherapy into a targeted agent. Three novel ADCs have been recently approved, i.e., trastuzumab deruxtecan, sacituzumab govitecan and enfortumab vedotin, respectively, targeting HER2, Trop2 and Nectin4. Thanks to progressive advances in engineering technologies these drugs rely on, the spectrum of diseases sensitive to these drugs as well as their indications are in continuous expansion. Several novel ADCs are under evaluation, exploring new potential targets along with innovative payloads. This review aims at providing a summary of the technology behind these compounds and at presenting the latest ADCs approved in solid tumors, as well as at describing novel targets for ADCs under investigation and new strategies to optimize their efficacy in solid tumors.


Oncotarget ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 1031-1044 ◽  
Author(s):  
Siddesh V. Hartimath ◽  
Ayman El-Sayed ◽  
Amal Makhlouf ◽  
Wendy Bernhard ◽  
Carolina Gonzalez ◽  
...  

2021 ◽  
Author(s):  
Yasuaki Anami ◽  
Yoshihiro Otani ◽  
Wei Xiong ◽  
Summer Y. Y. Ha ◽  
Aiko Yamaguchi ◽  
...  

Glioblastoma multiforme (GBM) is characterized by aggressive growth and the poorest prognosis of all brain tumor types. Most therapies rarely provide clinically meaningful improvements in outcomes of patients with GBM. Antibody-drug conjugates (ADCs) are emerging chemotherapeutics with stunning success in cancer management. Although promising, clinical studies of three ADCs for treating GBM, including Depatux-M, have been discontinued because of safety concerns and limited therapeutic benefits. Here, we report that ADC homogeneity is a critical parameter to maximize the therapeutic potential in GBM therapy. We demonstrate that homogeneous conjugates generated using our linker show enhanced drug delivery to intracranial brain tumors. Notably, compared to heterogeneous ADCs, including a Depatux-M analog, our ADCs provide greatly improved antitumor effects and survival benefits in orthotopic brain tumor models, including a patient-derived xenograft model of GBM. Our findings warrant the future development of homogeneous ADCs as promising molecular entities toward cures for intractable brain tumors.


2021 ◽  
Vol 11 ◽  
Author(s):  
Sagun Parakh ◽  
Joseph Nicolazzo ◽  
Andrew M Scott ◽  
Hui Kong Gan

Glioblastoma (GBM) is an aggressive and fatal malignancy that despite decades of trials has limited therapeutic options. Antibody drug conjugates (ADCs) are composed of a monoclonal antibody which specifically recognizes a cellular surface antigen linked to a cytotoxic payload. ADCs have demonstrated superior efficacy and/or reduced toxicity in a range of haematological and solid tumors resulting in nine ADCs receiving regulatory approval. ADCs have also been explored in patients with brain tumours but with limited success to date. While earlier generations ADCs in glioma patients have had limited success and high toxicity, newer and improved ADCs characterised by low immunogenicity and more effective payloads have shown promise in a range of tumour types. These newer ADCs have also been tested in glioma patients, however, with mixed results. Factors affecting the effectiveness of ADCs to target the CNS include the blood brain barrier which acts as a physical and biochemical barrier, the pro-cancerogenic and immunosuppressive tumor microenvironment and tumour characteristics like tumour volume and antigen expression. In this paper we review the data regarding the ongoing the development of ADCs in glioma patients as well as potential strategies to overcome these barriers to maximise their therapeutic potential.


2019 ◽  
Vol 10 (03) ◽  
pp. 140-141
Author(s):  
Alexander Kretzschmar

Die Therapielandschaft des metastasierten Urothelkarzinoms hat sich seit der Zulassung der ersten Immun-Checkpoint-Inhibitoren verändert. Die neuen Therapien sind deutlich effektiver, allerdings erreichen die Responseraten der neuen Therapien nur bis zu etwa 30 %, beklagte Prof. Matthew Milowsky, Chapel Hill/USA, auf einer Oral Abstract Session auf dem ASCO-GU. In San Francisco gaben erste Vorträge und Poster bereits einen Einblick, wovon diejenigen Patienten profitieren könnten, die auf die etablierten Chemotherapien und die neuen Immuntherapien nicht ansprechen. Manche Onkologen sprechen bereits von der „Post-Checkpoint-Ära”. Als Kandidaten werden vor allem Antikörper-Wirkstoff-Konjugate (antibody-drug conjugates; ADC) gehandelt – und zwar nicht nur zur Therapie des metastasierten Blasenkarzinoms.


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