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Hao JL, Li XY, Liu YT, Lang JX, Liu DJ, Zhang CD. Antibody-drug conjugates in gastric cancer: from molecular landscape to clinical strategies. Gastric Cancer 2024; 27:887-906. [PMID: 38963593 DOI: 10.1007/s10120-024-01529-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 06/25/2024] [Indexed: 07/05/2024]
Abstract
Antibody-drug conjugates (ADCs) represent a crucial component of targeted therapies in gastric cancer, potentially altering traditional treatment paradigms. Many ADCs have entered rigorous clinical trials based on biological theories and preclinical experiments. Modality trials have also been conducted in combination with monoclonal antibody therapies, chemotherapies, immunotherapies, and other treatments to enhance the efficacy of drug coordination effects. However, ADCs exhibit limitations in treating gastric cancer, including resistance triggered by their structure or other factors. Ongoing intensive researches and preclinical experiments are yielding improvements, while enhancements in drug development processes and concomitant diagnostics during the therapeutic period actively boost ADC efficacy. The optimal treatment strategy for gastric cancer patients is continually evolving. This review summarizes the clinical progress of ADCs in treating gastric cancer, analyzes the mechanisms of ADC combination therapies, discusses resistance patterns, and offers a promising outlook for future applications in ADC drug development and companion diagnostics.
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Affiliation(s)
- Jia-Lin Hao
- Central Laboratory, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, China
| | - Xin-Yun Li
- Clinical Medicine, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, China
| | - Yu-Tong Liu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, 110022, China
| | - Ji-Xuan Lang
- Department of Surgical Oncology, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, China
| | - Di-Jie Liu
- Central Laboratory, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, China
| | - Chun-Dong Zhang
- Central Laboratory, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, China.
- Department of Surgical Oncology, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, China.
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2
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Tang Q, Li H, Zhao XT, Li ZY, Ma CX, Zhou SQ, Chen DD. Opportunities and Challenges in the Development of Antibody-Drug Conjugate for Triple-Negative Breast Cancer: The Diverse Choices and Changing Needs. World J Oncol 2024; 15:527-542. [PMID: 38993251 PMCID: PMC11236369 DOI: 10.14740/wjon1853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Accepted: 05/11/2024] [Indexed: 07/13/2024] Open
Abstract
Triple-negative breast cancer (TNBC) is a highly heterogeneous breast cancer subtype, which is also characterized by the aggressive phenotype, high recurrence rate, and poor prognosis. Antibody-drug conjugate (ADC) is a monoclonal antibody with a cytotoxic payload connected by a linker. ADC is gaining more and more attention as a targeted anti-cancer agent. Clinical studies of emerging ADC drugs such as sacituzumab govitecan and trastuzumab deruxtecan in patients with metastatic breast cancer (including TNBC) are progressing rapidly. In view of its excellent clinical efficacy and good tolerability, Sacituzumab govitecan gained accelerated approval by the FDA for the treatment of advanced metastatic TNBC in 2020. This review discusses the treatment status and challenges in TNBC, with an emphasis on the current status of ADC development and clinical trials in TNBC and metastatic breast cancer. We also summarize the clinical experience and future exploration directions of ADC development for TNBC patients.
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Affiliation(s)
- Qi Tang
- Department of Breast Surgery, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, Yunnan, China
- These authors contributed equally to this article
| | - Hui Li
- Department of Breast Surgery, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, Yunnan, China
- These authors contributed equally to this article
| | - Xin Tong Zhao
- Department of Breast Surgery, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, Yunnan, China
- These authors contributed equally to this article
| | - Ze Ying Li
- Department of Breast Surgery, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, Yunnan, China
| | - Chun Xiao Ma
- Department of Breast Surgery, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, Yunnan, China
| | - Shao Qiang Zhou
- Department of Breast Surgery, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, Yunnan, China
| | - De Dian Chen
- Department of Breast Surgery, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, Yunnan, China
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Ascione L, Guidi L, Prakash A, Trapani D, LoRusso P, Lou E, Curigliano G. Unlocking the Potential: Biomarkers of Response to Antibody-Drug Conjugates. Am Soc Clin Oncol Educ Book 2024; 44:e431766. [PMID: 38828973 DOI: 10.1200/edbk_431766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Antibody-drug conjugates (ADCs) have reshaped the cancer treatment landscape across a variety of different tumor types. ADCs' peculiar pharmacologic design combines the cytotoxic properties of chemotherapeutic agents with the selectivity of targeted therapies. At present, the approval of many ADCs used in clinical practice has not always been biomarker-driven. Indeed, predicting ADCs' activity and toxicity through the demonstration of specific biomarkers is still a great unmet need, and the identification of patients who can derive significant benefit from treatment with ADCs may often be uncertain. With the lack of robust predictive biomarkers to anticipate primary, intrinsic resistance to ADCs and no consolidated biomarkers to aid in the early identification of treatment resistance (ie, acquired resistance), the determination of precise biologic mechanisms of ADC activity and safety becomes priority in the quest for better patient-centric outcomes. Of great relevance, whether the target antigen expression is a determinant of ADCs' primary activity is still to be clarified, and available data remain quite controversial. Antigen expression assessment is typically performed on tissue biopsy, hence only providing information on a specific tumor site, therefore unable to capture heterogeneous patterns of tumor antigen expression. Quantifying the expression of the target antigen across all tumor sites would help better understand tumor heterogeneity, whereas molecularly characterizing tumor-intrinsic features over time might provide information on resistance mechanisms. In addition, toxicity can represent a critical concern, since most ADCs have a safety profile that resembles that of chemotherapies, with often unique adverse events requiring special management, possibly because of the differential in pharmacokinetics between the small-molecule agent versus payload of a similar class (eg, deruxtecan conjugate-related interstitial lung disease). As such, the identification of robust predictive biomarkers of safety and activity of ADCs has the potential to improve patient selection and enrich the population of patients most likely to derive a substantial clinical benefit, especially in those disease settings where different ADCs happen to be approved in competing clinical indications, with undefined biomarkers to make precise decision making and unclear data on how to sequence ADCs. At this point, the identification of clinically actionable biomarkers in the space of ADCs remains a top research priority.
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Affiliation(s)
- Liliana Ascione
- Division of Early Drug Development, IEO, European Institute of Oncology, IRCCS, Milan, Italy
- Department of Oncology and Hematology (DIPO), University of Milan, Milan, Italy
| | - Lorenzo Guidi
- Division of Early Drug Development, IEO, European Institute of Oncology, IRCCS, Milan, Italy
- Department of Oncology and Hematology (DIPO), University of Milan, Milan, Italy
| | - Ajay Prakash
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, MN
| | - Dario Trapani
- Division of Early Drug Development, IEO, European Institute of Oncology, IRCCS, Milan, Italy
- Department of Oncology and Hematology (DIPO), University of Milan, Milan, Italy
| | - Patricia LoRusso
- Yale University School of Medicine, Yale Cancer Center, New Haven, CT
| | - Emil Lou
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, MN
| | - Giuseppe Curigliano
- Division of Early Drug Development, IEO, European Institute of Oncology, IRCCS, Milan, Italy
- Department of Oncology and Hematology (DIPO), University of Milan, Milan, Italy
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4
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Zhou DD, Zhai XT, Zhang LW, Xie ZH, Wang Y, Zhen YS, Gao RJ, Miao QF. A new TROP2-targeting antibody-drug conjugate shows potent antitumor efficacy in breast and lung cancers. NPJ Precis Oncol 2024; 8:94. [PMID: 38654141 DOI: 10.1038/s41698-024-00584-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 03/28/2024] [Indexed: 04/25/2024] Open
Abstract
Trophoblast cell surface antigen 2 (Trop2) is considered to be an attractive therapeutic target in cancer treatments. We previously generated a new humanized anti-Trop2 antibody named hIMB1636, and designated it as an ideal targeting carrier for cancer therapy. Lidamycin (LDM) is a new antitumor antibiotic, containing an active enediyne chromophore (AE) and a noncovalently bound apoprotein (LDP). AE and LDP can be separated and reassembled, and the reassembled LDM possesses cytotoxicity similar to that of native LDM; this has made LDM attractive in the preparation of gene-engineering drugs. We herein firstly prepared a new fusion protein hIMB1636-LDP composed of hIMB1636 and LDP by genetic engineering. This construct showed potent binding activities to recombinant antigen with a KD value of 4.57 nM, exhibited binding to Trop2-positive cancer cells and internalization and transport to lysosomes, and demonstrated powerful tumor-targeting ability in vivo. We then obtained the antibody-drug conjugate (ADC) hIMB1636-LDP-AE by molecular reconstitution. In vitro, hIMB1636-LDP-AE inhibited the proliferation, migration, and tumorsphere formation of tumor cells with half-maximal inhibitory concentration (IC50) values at the sub-nanomolar level. Mechanistically, hIMB1636-LDP-AE induced apoptosis and cell-cycle arrest. In vivo, hIMB1636-LDP-AE also inhibited the growth of breast and lung cancers in xenograft models. Moreover, compared to sacituzumab govitecan, hIMB1636-LDP-AE showed more potent antitumor activity and significantly lower myelotoxicity in tumors with moderate Trop2 expression. This study fully revealed the potent antitumor efficacy of hIMB1636-LDP-AE, and also provided a new preparation method for LDM-based ADC, as well as a promising candidate for breast cancer and lung cancer therapeutics.
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Affiliation(s)
- Dan-Dan Zhou
- NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiao-Tian Zhai
- NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Lan-Wen Zhang
- NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zi-Hui Xie
- NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ying Wang
- NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yong-Su Zhen
- NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Rui-Juan Gao
- NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
| | - Qing-Fang Miao
- NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Santi DV, Ashley GW, Cabel L, Bidard FC. Could a Long-Acting Prodrug of SN-38 be Efficacious in Sacituzumab Govitecan-Resistant Tumors? BioDrugs 2024; 38:171-176. [PMID: 38236523 PMCID: PMC10912420 DOI: 10.1007/s40259-024-00643-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2024] [Indexed: 01/19/2024]
Abstract
We previously proposed that sacituzumab govitecan (SG, Trodelvy®) likely acts as a simple prodrug of systemic SN-38 as well as an antibody drug conjugate (ADC). In the present commentary, we assess whether a long-acting SN-38 prodrug, such as PLX038, might be efficacious in SG-resistant patients. We first describe possible mechanisms of action of SG, with new insights on pharmacokinetics and TROP2 receptor occupancy. We argue that SG is not an optimal conventional ADC and that the amount of systemic SN-38 spontaneously hydrolyzed from the ADC is so high it must have activity. Then, we describe the concept of time-over-target as related to the pharmacology of SG and PLX038 as SN-38 prodrugs. To be clear, we are not in any way suggesting that PLX038 or any SN-38 prodrug is superior to SG as an anticancer agent. Clearly, SG has the benefit over antigen-independent SN-38 prodrugs in that it targets cells with the TROP2 receptor. However, we surmise that PLX038 should be a more efficacious and less toxic prodrug of systemic SN-38 than SG. Finally, we suggest possible mechanisms of SG resistance and how PLX038 might perform in the context of each. Taken together, we argue that-contrary to many opinions-SG does not exclusively act as a conventional ADC, and propose that PLX038 may be efficacious in some settings of SG-resistance.
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Affiliation(s)
- Daniel V Santi
- Prolynx, Inc., 135 Mississippi Street, San Francisco, CA, 94107, USA.
- Pharmaceutical Chemistry, UCSF, San Francisco, CA, USA.
| | - Gary W Ashley
- Prolynx, Inc., 135 Mississippi Street, San Francisco, CA, 94107, USA
| | - Luc Cabel
- Medical Oncology, Institut Curie, Paris, France
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6
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Koltai T, Fliegel L. The Relationship between Trop-2, Chemotherapeutic Drugs, and Chemoresistance. Int J Mol Sci 2023; 25:87. [PMID: 38203255 PMCID: PMC10779383 DOI: 10.3390/ijms25010087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/08/2023] [Accepted: 12/17/2023] [Indexed: 01/12/2024] Open
Abstract
Trop-2 is a highly conserved one-pass transmembrane mammalian glycoprotein that is normally expressed in tissues such as the lung, intestines, and kidney during embryonic development. It is overexpressed in many epithelial cancers but is absent in non-epithelial tumors. Trop-2 is an intracellular calcium signal transducer that participates in the promotion of cell proliferation, migration, invasion, metastasis, and probably stemness. It also has some tumor suppressor effects. The pro-tumoral actions have been thoroughly investigated and reported. However, Trop-2's activity in chemoresistance is less well known. We review a possible relationship between Trop-2, chemotherapy, and chemoresistance. We conclude that there is a clear role for Trop-2 in some specific chemoresistance events. On the other hand, there is no clear evidence for its participation in multidrug resistance through direct drug transport. The development of antibody conjugate drugs (ACD) centered on anti-Trop-2 monoclonal antibodies opened the gates for the treatment of some tumors resistant to classic chemotherapies. Advanced urothelial tumors and breast cancer were among the first malignancies for which these ACDs have been employed. However, there is a wide group of other tumors that may benefit from anti-Trop-2 therapy as soon as clinical trials are completed.
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Affiliation(s)
- Tomas Koltai
- Hospital del Centro Gallego de Buenos Aires, Buenos Aires 2199, Argentina;
| | - Larry Fliegel
- Department of Biochemistry, Faculty of Medicine, University of Alberta, 347 Medical Science Bldg., Edmonton, AB T6G 2H7, Canada
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7
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Qiu S, Zhang J, Wang Z, Lan H, Hou J, Zhang N, Wang X, Lu H. Targeting Trop-2 in cancer: Recent research progress and clinical application. Biochim Biophys Acta Rev Cancer 2023; 1878:188902. [PMID: 37121444 DOI: 10.1016/j.bbcan.2023.188902] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 04/11/2023] [Accepted: 04/26/2023] [Indexed: 05/02/2023]
Abstract
The development of new antitumor drugs depends mainly upon targeting tumor cells precisely. Trophoblast surface antigen 2 (Trop-2) is a type I transmembrane glycoprotein involved in Ca2+ signaling in tumor cells. It is highly expressed in various tumor tissues than in normal tissues and represents a novel and promising molecular target for caner targeted therapy. Up to now, the mechanisms and functions associated with Trop-2 have been extensively studied in a variety of solid tumors. According to these findings, Trop-2 plays an important role in cell proliferation, apoptosis, cell adhesion, epithelial-mesenchymal transition, as well as tumorigenesis and tumor progression. In addition, Trop-2 related drugs are also being developed widely. There are a number of Trop-2 related ADC drugs that have demonstrated potent antitumor activity and are currently been studied, such as Sacituzumab Govitecan (SG) and Datopotamab Deruxtecan (Dato-Dxd). In this study, we reviewed the progress of Trop-2 research in solid tumors. We also sorted out the composition and rationale of Trop-2 related drugs and summarized the related clinical trials. Finally, we discussed the current status of Trop-2 research and expanded our perspectives on its future research directions. Importantly, we found that Trop-2 targeted ADCs have great potential for combination with other antitumor therapies. Trop-2 targeted ADCs can reprogramme tumor microenvironment through multiple signaling pathways, ultimately activating antitumor immunity.
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Affiliation(s)
- Shuying Qiu
- Department of Medical Oncology, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, Hangzhou, China; Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - Jianping Zhang
- Department of Medical Oncology, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, Hangzhou, China; Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - Zhuo Wang
- Department of Medical Oncology, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - Hui Lan
- Department of Medical Oncology, Affiliated Lishui Hospital of Zhejiang University/Lishui Central Hospital and Fifth Affiliated Hospital of Wenzhou Medical College, Lishui, China
| | - Jili Hou
- Department of Medical Oncology, Zhuji People's Hospital of Zhejiang Province, Zhuji, China
| | - Nan Zhang
- Department of Medical Oncology, China Coast Guard Hospital of the People's Armed Police Force, Jiaxing, China
| | - Xian Wang
- Department of Medical Oncology, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, Hangzhou, China.
| | - Haiqi Lu
- Department of Medical Oncology, Sir Run Run Shaw Hospital, Medical School of Zhejiang University, Hangzhou, China.
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8
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Chen YF, Xu YY, Shao ZM, Yu KD. Resistance to antibody-drug conjugates in breast cancer: mechanisms and solutions. Cancer Commun (Lond) 2023; 43:297-337. [PMID: 36357174 PMCID: PMC10009672 DOI: 10.1002/cac2.12387] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/13/2022] [Accepted: 10/26/2022] [Indexed: 11/12/2022] Open
Abstract
Antibody-drug conjugates (ADCs) are a rapidly developing therapeutic approach in cancer treatment that has shown remarkable activity in breast cancer. Currently, there are two ADCs approved for the treatment of human epidermal growth factor receptor 2-positive breast cancer, one for triple-negative breast cancer, and multiple investigational ADCs in clinical trials. However, drug resistance has been noticed in clinical use, especially in trastuzumab emtansine. Here, the mechanisms of ADC resistance are summarized into four categories: antibody-mediated resistance, impaired drug trafficking, disrupted lysosomal function, and payload-related resistance. To overcome or prevent resistance to ADCs, innovative development strategies and combination therapy options are being investigated. Analyzing predictive biomarkers for optimal therapy selection may also help to prevent drug resistance.
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Affiliation(s)
- Yu-Fei Chen
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, P. R. China.,Shanghai Medical College, Fudan University, Shanghai, 200032, P. R. China
| | - Ying-Ying Xu
- Department of Breast Surgery, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, P. R. China
| | - Zhi-Ming Shao
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, P. R. China.,Shanghai Medical College, Fudan University, Shanghai, 200032, P. R. China
| | - Ke-Da Yu
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, 200032, P. R. China.,Shanghai Medical College, Fudan University, Shanghai, 200032, P. R. China
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9
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Cabaud O, Berger L, Crompot E, Adélaide J, Finetti P, Garnier S, Guille A, Carbuccia N, Farina A, Agavnian E, Chaffanet M, Gonçalves A, Charafe-Jauffret E, Mamessier E, Birnbaum D, Bertucci F, Lopez M. Overcoming Resistance to Anti-nectin-4 Antibody-Drug Conjugate. Mol Cancer Ther 2022; 21:1227-1235. [PMID: 35534238 DOI: 10.1158/1535-7163.mct-22-0013] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/14/2022] [Accepted: 04/28/2022] [Indexed: 11/16/2022]
Abstract
Antibody-drug conjugates (ADCs) represent a fast-growing drug class in oncology. However, ADCs are associated with resistance, and therapies able to overcome it are of utmost importance. Recently, enfortumab vedotin-ejfv (EV) was approved in nectin-4+ metastatic urothelial cancer. We previously described PVRL4/nectin-4, as a new therapeutic target in breast cancer (BC), and produced an efficient EV-like ADC comprising a human anti-nectin-4 monoclonal antibody conjugated to monomethyl auristatin-E (MMAE) named N41mab-vcMMAE. To study the consequence of the long-term treatment with this ADC, we developed a preclinical BC model in mice, and report a mechanism of resistance to N41mab-vcMMAE after a 9- months treatment and a way to reverse it. RNA-sequencing pointed to an upregulation in resistant tumors of ABCB1 expression, encoding the multidrug resistance protein MDR-1/P-glycoprotein (P-gp), associated with focal gene amplification and high protein expression. Sensitivity to N41mab-vcMMAE of the resistant model was restored in vitro by P-gp pharmacological inhibitors, like tariquidar. P-gp is expressed in a variety of normal tissues. By delivering the drug to the tumor more specifically than does classical chemotherapy, we hypothesized that the combined use of ADC with P-gp inhibitors might reverse resistance in vivo without toxicity. Indeed, we showed that the tariquidar/N41mab-vcMMAE combination was well tolerated and induced a rapid regression of ADC-resistant tumors in mice. By contrast, the tariquidar/docetaxel combination was toxic and poorly efficient. These results show that ABC transporter inhibitors can be safely used with ADC to reverse ADC-induced resistance and open new opportunities in the fight against multidrug resistance.
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Affiliation(s)
- Olivier Cabaud
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - Ludovic Berger
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - Emerence Crompot
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - José Adélaide
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - Pascal Finetti
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - Sèverine Garnier
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - Arnaud Guille
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - Nadine Carbuccia
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - Anne Farina
- ICEP Platform, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix Marseille Université U105, Institut Paoli-Calmettes, Marseille, France
| | - Emilie Agavnian
- ICEP Platform, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix Marseille Université U105, Institut Paoli-Calmettes, Marseille, France
| | - Max Chaffanet
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - Anthony Gonçalves
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - Emmanuelle Charafe-Jauffret
- ICEP Platform, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix Marseille Université U105, Institut Paoli-Calmettes, Marseille, France
| | - Emilie Mamessier
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - Daniel Birnbaum
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
| | - François Bertucci
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
- Département d'Oncologie Médicale, Institut Paoli-Calmettes, Marseille, France
| | - Marc Lopez
- Laboratoire d'Oncologie Prédictive, Centre de Recherche en Cancérologie de Marseille, CRCM, Inserm UMR1068, CNRS UMR7258, Aix-Marseille Université U105, Institut Paoli-Calmettes, Label « Ligue contre le cancer », Marseille, France
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Zardavas D. Clinical development of antibody-drug conjugates in triple negative breast cancer: Can we jump higher? Expert Opin Investig Drugs 2022; 31:633-644. [PMID: 35451891 DOI: 10.1080/13543784.2022.2070064] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Triple negative breast cancer (TNBC) is an aggressive BC subtype, associated with higher rates of relapse in the primary disease setting and shorter overall survival upon metastatic relapse. The advent of antibody-drug conjugates (ADC), able to deliver selectively potent chemotherapeutic agents, has demonstrated promising clinical activity, with the first approval of an ADC, i.e. Sacituzumab Govitecan, in the metastatic setting. The main scope of this paper is to provide the most recent data indicating the promise of this novel class of drugs, as potential tools to improve clinical outcomes of patients diagnosed with TNBC. AREAS COVERED In this article, upon review of the main characteristics of TNBC, and those of ADCs, an overview of the data from clinical trials assessing ADCs in TNBC will be provided, including those that led to the first approval of such a drug for patients with metastatic disease; furthermore, several other ADCs targeting different proteins (over)expressed by TNBC undergo clinical development. Combinations of ADCs with other targeted agents are discussed; the most pertinent considerations for improving the chances of successful clinical development of ADCs in TNBC are provided. EXPERT OPINION ADCs are a potent class of targeted anticancer assets, with demonstrated efficacy against metastatic TNBC. Such assets could further improve clinical outcomes of patients with TNBC, and successful development depends upon: i) successful triaging of patients with the right ADC, ii) technical optimization of ADCs to maximize the efficacy, while reducing toxicity, and iii) assess rationally chosen combinations with synergistic antitumor activity and acceptable safety profile.
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11
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Targeting breast cancer resistance protein (BCRP/ABCG2): Functional inhibitors and expression modulators. Eur J Med Chem 2022; 237:114346. [DOI: 10.1016/j.ejmech.2022.114346] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 03/15/2022] [Accepted: 04/01/2022] [Indexed: 12/16/2022]
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Pavone G, Motta L, Martorana F, Motta G, Vigneri P. A New Kid on the Block: Sacituzumab Govitecan for the Treatment of Breast Cancer and Other Solid Tumors. Molecules 2021; 26:molecules26237294. [PMID: 34885875 PMCID: PMC8659286 DOI: 10.3390/molecules26237294] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/27/2021] [Accepted: 11/29/2021] [Indexed: 11/16/2022] Open
Abstract
Human trophoblast cell-surface antigen-2 (Trop-2) is a membrane glycoprotein involved in cell proliferation and motility, frequently overexpressed in epithelial tumors. Thus, it represents an attractive target for anticancer therapies. Sacituzumab govitecan (SG) is a third-generation antibody-drug conjugate, consisting of an anti-Trop-2 monoclonal antibody (hRS7), a hydrolyzable linker, and a cytotoxin (SN38), which inhibits topoisomerase 1. Specific pharmacological features, such as the high antibody to payload ratio, the ultra-toxic nature of SN38, and the capacity to kill surrounding tumor cells (the bystander effect), make SG a very promising drug for cancer treatment. Indeed, unprecedented results have been observed with SG in patients with heavily pretreated advanced triple-negative breast cancer and urothelial carcinomas, and the drug has already received approval for these indications. These results are coupled with a manageable toxicity profile, with neutropenia and diarrhea as the most frequent adverse events, mainly of grades 1-2. While several trials are exploring SG activity in different tumor types and settings, potential biomarkers of response are under investigation. Among these, Trop-2 overexpression and the presence of BRCA1/2 mutations seem to be the most promising. We review the available literature concerning SG, with a focus on its toxicity spectrum and possible biomarkers of its response.
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Affiliation(s)
- Giuliana Pavone
- Center of Experimental Oncology and Hematology, A.O.U. Policlinico “G.Rodolico-S.Marco”, 95123 Catania, Italy; (G.P.); (F.M.); (G.M.); (P.V.)
- Medical Oncology Unit, A.O.U. Policlinico “G.Rodolico-S.Marco”, 95123 Catania, Italy
| | - Lucia Motta
- Center of Experimental Oncology and Hematology, A.O.U. Policlinico “G.Rodolico-S.Marco”, 95123 Catania, Italy; (G.P.); (F.M.); (G.M.); (P.V.)
- Medical Oncology Unit, A.O.U. Policlinico “G.Rodolico-S.Marco”, 95123 Catania, Italy
- Correspondence: ; Tel.: +39-095-3781959
| | - Federica Martorana
- Center of Experimental Oncology and Hematology, A.O.U. Policlinico “G.Rodolico-S.Marco”, 95123 Catania, Italy; (G.P.); (F.M.); (G.M.); (P.V.)
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
| | - Gianmarco Motta
- Center of Experimental Oncology and Hematology, A.O.U. Policlinico “G.Rodolico-S.Marco”, 95123 Catania, Italy; (G.P.); (F.M.); (G.M.); (P.V.)
- Medical Oncology Unit, A.O.U. Policlinico “G.Rodolico-S.Marco”, 95123 Catania, Italy
| | - Paolo Vigneri
- Center of Experimental Oncology and Hematology, A.O.U. Policlinico “G.Rodolico-S.Marco”, 95123 Catania, Italy; (G.P.); (F.M.); (G.M.); (P.V.)
- Medical Oncology Unit, A.O.U. Policlinico “G.Rodolico-S.Marco”, 95123 Catania, Italy
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
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Molecular targets and therapeutics in chemoresistance of triple-negative breast cancer. Med Oncol 2021; 39:14. [PMID: 34812991 DOI: 10.1007/s12032-021-01610-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 11/03/2021] [Indexed: 02/06/2023]
Abstract
Triple-negative breast cancer (TNBC) is a specific subtype of breast cancer (BC), which shows immunohistochemically negative expression of hormone receptor i.e., Estrogen receptor and Progesterone receptor along with the absence of Human Epidermal Growth Factor Receptor-2 (HER2/neu). In Indian scenario the prevalence of BC is 26.3%, whereas, in West Bengal the cases are of 18.4%. But the rate of TNBC has increased up to 31% and shows 27% of total BC. Conventional chemotherapy is effective only in the initial stages but with progression of the disease the effectivity gets reduced and shown almost no effect in later or advanced stages of TNBC. Thus, TNBC patients frequently develop resistance and metastasis, due to its peculiar triple-negative nature most of the hormonal therapies also fails. Development of chemoresistance may involve various factors, such as, TNBC heterogeneity, cancer stem cells (CSCs), signaling pathway deregulation, DNA repair mechanism, hypoxia, and other molecular factors. To overcome the challenges to treat TNBC various targets and molecules have been exploited including CSCs modulator, drug efflux transporters, hypoxic factors, apoptotic proteins, and regulatory signaling pathways. Moreover, to improve the targets and efficacy of treatments researchers are emphasizing on targeted therapy for TNBC. In this review, an effort has been made to focus on phenotypic and molecular variations in TNBC along with the role of conventional as well as newly identified pathways and strategies to overcome challenge of chemoresistance.
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14
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Liao S, Wang B, Zeng R, Bao H, Chen X, Dixit R, Xing X. Recent advances in trophoblast cell-surface antigen 2 targeted therapy for solid tumors. Drug Dev Res 2021; 82:1096-1110. [PMID: 34462935 DOI: 10.1002/ddr.21870] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/27/2021] [Accepted: 05/02/2021] [Indexed: 12/27/2022]
Abstract
Trophoblast cell-surface antigen 2 (Trop 2) is a transmembrane glycoprotein that is highly expressed in various cancer types with relatively low or no baseline expression in most normal tissues. Its overexpression is associated with tumor growth and poor prognosis; Trop 2 is, therefore, an ideal therapeutic target for epithelial cancers. Several Trop 2 targeted therapeutics have recently been developed for the treatment of cancers, such as anti-Trop 2 antibodies and antibody-drug conjugates (ADCs), as well as Trop 2-specific cell therapy. In particular, the safety and clinical benefit of Trop 2-based ADCs have been demonstrated in clinical trials across multiple tumor types, including those with limited treatment options, such as triple-negative breast cancer, platinum-resistant urothelial cancer, and heavily pretreated non-small cell lung cancer. In this review, we elaborate on recent advances in Trop 2 targeted modalities and provide an overview of novel insights for future developments in this field.
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Affiliation(s)
- Shutan Liao
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
| | - Bing Wang
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
| | - Rong Zeng
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
| | - Haifeng Bao
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
| | - Xiaomin Chen
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
| | - Rakesh Dixit
- Department of Consultation, Bionavigen LLC, Gaithersburg, Maryland, USA
| | - Xiaoyan Xing
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
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Abstract
Sacituzumab govitecan (sacituzumab govitecan-hziy; Trodelvy™) is a Trop-2-directed antibody conjugated to a topoisomerase I inhibitor (SN-38) that is being developed by Immunomedics for the treatment of solid tumours, including breast cancer. In April 2020, sacituzumab govitecan received accelerated approval in the USA for the treatment of adult patients with metastatic triple-negative breast cancer (mTNBC) who have received at least two prior therapies for metastatic disease. Sacituzumab govitecan is undergoing phase III development for breast cancer in the USA and EU, and phase II development for urothelial cancer. It is also being explored for brain metastases, glioblastoma, endometrial cancer and prostate cancer. This article summarizes the milestones in the development of sacituzumab govitecan leading to this first approval for mTNBC.
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Barok M, Puhka M, Yazdi N, Joensuu H. Extracellular vesicles as modifiers of antibody-drug conjugate efficacy. J Extracell Vesicles 2021; 10:e12070. [PMID: 33613875 PMCID: PMC7881363 DOI: 10.1002/jev2.12070] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/26/2021] [Accepted: 02/01/2021] [Indexed: 12/17/2022] Open
Abstract
Antibody-drug conjugates (ADCs) are a new class of anti-cancer drugs that consist of a monoclonal antibody, a highly potent small-molecule cytotoxic drug, and a chemical linker between the two. ADCs can selectively deliver cytotoxic drugs to cancer cells leading to a reduced systemic exposure and a wider therapeutic window. To date, nine ADCs have received marketing approval, and over 100 are being investigated in nearly 600 clinical trials. The target antigens of at least eight out of the nine approved anti-cancer ADCs and of 69 investigational ADCs are present on extracellular vesicles (EVs) (tiny particles produced by almost all types of cells) that may carry their contents into local and distant cells. Therefore, the EVs have a potential to mediate both the anti-cancer effects and the adverse effects of ADCs. In this overview, we discuss the mechanisms of action of ADCs and the resistance mechanisms to them, the EV-mediated resistance mechanisms to small molecule anti-cancer drugs and anti-cancer monoclonal antibodies, and the EVs as modifiers of ADC efficacy and safety.
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Affiliation(s)
- Mark Barok
- Helsinki University Hospital and University of HelsinkiHelsinkiFinland
- Laboratory of Molecular OncologyUniversity of HelsinkiBiomedicumHelsinkiFinland
| | - Maija Puhka
- Institute for Molecular Medicine FIMMEV and HiPrep CoreUniversity of HelsinkiHelsinkiFinland
| | - Narjes Yazdi
- Helsinki University Hospital and University of HelsinkiHelsinkiFinland
- Laboratory of Molecular OncologyUniversity of HelsinkiBiomedicumHelsinkiFinland
| | - Heikki Joensuu
- Helsinki University Hospital and University of HelsinkiHelsinkiFinland
- Laboratory of Molecular OncologyUniversity of HelsinkiBiomedicumHelsinkiFinland
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17
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Cardillo TM, Rossi DL, Zalath MB, Liu D, Arrojo R, Sharkey RM, Chang CH, Goldenberg DM. Predictive biomarkers for sacituzumab govitecan efficacy in Trop-2-expressing triple-negative breast cancer. Oncotarget 2020; 11:3849-3862. [PMID: 33196706 PMCID: PMC7597411 DOI: 10.18632/oncotarget.27766] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 09/23/2020] [Indexed: 12/21/2022] Open
Abstract
Sacituzumab govitecan (SG) is an antibody-drug conjugate composed of a humanized anti-Trop-2 IgG antibody conjugated via a hydrolysable linker to SN-38, the topoisomerase I-inhibitory active component of irinotecan. We investigated whether Trop-2-expression and homologous recombination repair (HRR) of SN-38-mediated double-strand DNA (dsDNA) breaks play a role in the sensitivity of triple-negative breast cancer (TNBC) to SG. Activation of HRR pathways, as evidenced by Rad51 expression, was assessed in SG-sensitive cell lines with low and moderate Trop-2-expression (SK-MES-1 squamous cell lung carcinoma and HCC1806 TNBC, respectively), compared to a low Trop-2-expressing, less SG-sensitive TNBC cell line (MDA-MB-231). Further, two Trop-2-transfectants of MDA-MB-231, C13 and C39 (4- and 25-fold higher Trop-2, respectively), were treated in mice with SG to determine whether increasing Trop-2 expression improves SG efficacy. SG mediated >2-fold increase in Rad51 in MDA-MB-231 but had no effect in SK-MES-1 or HCC1806, resulting in lower levels of dsDNA breaks in MDA-MB-231. SG and saline produced similar effects in parental MDA-MB-231 tumor-bearing mice (median survival time (MST) = 21d and 19.5d, respectively). However, in mice bearing higher Trop-2-expressing C13 and C39 tumors after Trop-2 transfection, SG provided a significant survival benefit, even compared to irinotecan (MST = 97d vs. 35d for C13, and 81d vs. 28d for C39, respectively; P < 0.0007). These results suggest that SG could provide better clinical benefit than irinotecan in patients with HRR-proficient tumors expressing high levels of Trop-2, as well as to patients with HRR-deficient tumors expressing low/moderate levels of Trop-2.
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Affiliation(s)
| | | | | | - Donglin Liu
- Immunomedics, Inc., Morris Plains, NJ 07950, USA.,Currently employed with FrontAim Biomedicines Inc., Princeton, NJ 08540, USA
| | | | - Robert M Sharkey
- Immunomedics, Inc., Morris Plains, NJ 07950, USA.,At the time the work was conducted, these authors were employees of Immunomedics, Inc., Morris Plains, NJ 07950, USA
| | - Chien-Hsing Chang
- Immunomedics, Inc., Morris Plains, NJ 07950, USA.,At the time the work was conducted, these authors were employees of Immunomedics, Inc., Morris Plains, NJ 07950, USA
| | - David M Goldenberg
- Immunomedics, Inc., Morris Plains, NJ 07950, USA.,Current address: Center for Molecular Medicine and Immunology, Mendham, NJ 07945, USA.,At the time the work was conducted, this author was Chairman and Chief Scientific Officer of Immunomedics, Inc., Morris Plains, NJ 07950, USA
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18
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Joubert N, Beck A, Dumontet C, Denevault-Sabourin C. Antibody-Drug Conjugates: The Last Decade. Pharmaceuticals (Basel) 2020; 13:ph13090245. [PMID: 32937862 PMCID: PMC7558467 DOI: 10.3390/ph13090245] [Citation(s) in RCA: 187] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/07/2020] [Accepted: 09/10/2020] [Indexed: 01/01/2023] Open
Abstract
An armed antibody (antibody–drug conjugate or ADC) is a vectorized chemotherapy, which results from the grafting of a cytotoxic agent onto a monoclonal antibody via a judiciously constructed spacer arm. ADCs have made considerable progress in 10 years. While in 2009 only gemtuzumab ozogamicin (Mylotarg®) was used clinically, in 2020, 9 Food and Drug Administration (FDA)-approved ADCs are available, and more than 80 others are in active clinical studies. This review will focus on FDA-approved and late-stage ADCs, their limitations including their toxicity and associated resistance mechanisms, as well as new emerging strategies to address these issues and attempt to widen their therapeutic window. Finally, we will discuss their combination with conventional chemotherapy or checkpoint inhibitors, and their design for applications beyond oncology, to make ADCs the magic bullet that Paul Ehrlich dreamed of.
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Affiliation(s)
- Nicolas Joubert
- GICC EA7501, Equipe IMT, Université de Tours, UFR des Sciences Pharmaceutiques, 31 Avenue Monge, 37200 Tours, France;
- Correspondence:
| | - Alain Beck
- Institut de Recherche Pierre Fabre, Centre d’Immunologie Pierre Fabre, 5 Avenue Napoléon III, 74160 Saint Julien en Genevois, France;
| | - Charles Dumontet
- Cancer Research Center of Lyon (CRCL), INSERM, 1052/CNRS 5286/UCBL, 69000 Lyon, France;
- Hospices Civils de Lyon, 69000 Lyon, France
| | - Caroline Denevault-Sabourin
- GICC EA7501, Equipe IMT, Université de Tours, UFR des Sciences Pharmaceutiques, 31 Avenue Monge, 37200 Tours, France;
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19
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Goldenberg DM, Sharkey RM. Sacituzumab govitecan, a novel, third-generation, antibody-drug conjugate (ADC) for cancer therapy. Expert Opin Biol Ther 2020; 20:871-885. [PMID: 32301634 DOI: 10.1080/14712598.2020.1757067] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
INTRODUCTION We describe a new, third-generation of antibody-drug conjugates (ADCs) having a high drug payload against topoisomerase I, important for DNA function, and targeting selective tumor antigens, predominantly TROP-2. AREAS COVERED The historical development of ADCs is reviewed before presenting the current line of improved, third-generation ADCs targeting topoisomerase I, thus affecting DNA and causing double-stranded DNA breaks. Emphasis is given to explaining why sacituzumab govitecan represents a paradigm change in ADCs by achieving a high therapeutic index due to its novel target, TROP-2, an internalizing antigen/antibody, proprietary linker chemistry, and high drug payload, resulting in a high tumor concentration of the drug given in repeated doses with acceptable tolerability, particularly evidencing a lower percentage of 'late' diarrhea than its prodrug, irinotecan. PubMed was used for the primary search conducted. EXPERT OPINION The properties and clinical results of third-generation ADCs, based on sacituzumab govitecan, are discussed, including prospects for future applications, particularly combination therapies with PARP inhibitors and immune checkpoint inhibitors. Since one topoisomerase I ADC has just received regulatory approval for HER2+ breast cancer, and sacituzumab govitecan is under FDA review for accelerated approval in the therapy of triple-negative breast cancer, the prospects for these novel ADCs are discussed.
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Affiliation(s)
| | - Robert M Sharkey
- Center for Molecular Medicine and Immunology , Mendham, New Jersey, USA
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20
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Jia Y, Wen X, Gong Y, Wang X. Current scenario of indole derivatives with potential anti-drug-resistant cancer activity. Eur J Med Chem 2020; 200:112359. [PMID: 32531682 DOI: 10.1016/j.ejmech.2020.112359] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/09/2020] [Accepted: 04/16/2020] [Indexed: 02/07/2023]
Abstract
Cancer chemotherapy is frequently hampered by drug resistance, so the resistance to anticancer agents represents one of the major obstacles for the effective cancer treatment. Indole derivatives have the potential to act on diverse targets in cancer cells and exhibit promising activity against drug-resistant cancers. Moreover, some indole-containing compounds such as Semaxanib, Sunitinib, Vinorelbine, and Vinblastine have already been applied in clinics for various kinds of cancer even drug-resistant cancer therapy. Thus, indole derivatives are one of significant resources for the development of novel anti-drug-resistant cancer agents. This review focuses on the recent development of indole derivatives with potential therapeutic application for drug-resistant cancers, and the mechanisms of action, the critical aspects of design as well as structure-activity relationships, covering articles published from 2010 to 2020.
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Affiliation(s)
- Yanshu Jia
- Chongqing Institute of Engineering, Chongqing, 400056, China
| | - Xiaoyue Wen
- The Institute of Infection and Inflammation, China Three Gorges University, Yichang, Hubei, 443000, China
| | - Yufeng Gong
- The Second Affiliated Hospital of Mudanjiang Medical University, Mudanjiang, 157000, China
| | - Xuefeng Wang
- Department of Surgery, Zhuji Affiliated Hospital of Shaoxing University, Zhejiang Province, 311800, China.
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21
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Beck A, Dumontet C, Joubert N. [Antibody-drug conjugates in oncology. Recent success of an ancient concept]. Med Sci (Paris) 2020; 35:1034-1042. [PMID: 31903915 DOI: 10.1051/medsci/2019227] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
An Antibody-Drug Conjugate (armed antibody) is a vectorized chemotherapy that results from the grafting of a cytotoxic agent on a monoclonal antibody thanks to a judiciously designed spacer arm. ADCs have made considerable progress in 10 years. In 2009, only gemtuzumab ozogamicin (Mylotarg®) was used clinically. In 2019, 4 other ADCs have been approved and more than 80 others are in active clinical trials. The first part of this review will focus on Food and Drug Administration-approved Antibody-Drug Conjugates, their limitations as well as their associated toxicity and resistance mechanisms.
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Affiliation(s)
- Alain Beck
- Institut de Recherche Pierre Fabre, Centre d'Immunologie Pierre Fabre, 5 Avenue Napoléon III, 74160 Saint-Julien-en-Genevois, France
| | - Charles Dumontet
- Cancer Research Center of Lyon (CRCL), Inserm 1052/CNRS, 69000 Lyon, France - Université de Lyon, 69000 Lyon, France - Hospices Civils de Lyon, 69000 Lyon, France
| | - Nicolas Joubert
- GICC EA7501, Université de Tours, équipe IMT, 31 avenue Monge, 37200 Tours, France
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22
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Fenn KM, Kalinsky K. Sacituzumab govitecan: antibody-drug conjugate in triple-negative breast cancer and other solid tumors. Drugs Today (Barc) 2019; 55:575-585. [PMID: 31584574 DOI: 10.1358/dot.2019.55.9.3039669] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Patients with metastatic triple-negative breast cancer (mTNBC) that has progressed on first-line therapy have a poor prognosis with limited therapeutic options. Sacituzumab govitecan (SG) is a novel antibody-drug conjugate (ADC) that has shown promising efficacy in mTNBC. SG is comprised of SN-38, the active metabolite of irinotecan, conjugated via a hydrolyzable linker to the humanized RS7 antibody targeting trophoblast cell surface antigen 2 (Trop-2), a glycoprotein that is expressed at high levels in many epithelial solid tumors. It has received breakthrough therapy status by the U.S. Food and Drug Administration (FDA) for the treatment of patients with pretreated mTNBC. In this review, we summarize available data regarding the pharmacology, pharmacokinetics, safety and efficacy of SG and describe ongoing and future clinical studies investigating this agent.
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Affiliation(s)
- K M Fenn
- Department of Medicine, Columbia University Irving Medical Center, New York, New York, USA
| | - K Kalinsky
- Department of Medicine, Columbia University Irving Medical Center, New York, New York, USA.
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23
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Zaman S, Jadid H, Denson AC, Gray JE. Targeting Trop-2 in solid tumors: future prospects. Onco Targets Ther 2019; 12:1781-1790. [PMID: 30881031 PMCID: PMC6402435 DOI: 10.2147/ott.s162447] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Trop-2 is a transmembrane glycoprotein that is upregulated in all cancer types independent of baseline levels of Trop-2 expression. Trop-2 is an ideal candidate for targeted therapeutics due to it being a transmembrane protein with an extracellular domain overexpressed on a wide variety of tumors as well as its upregulated expression relative to normal cells. As a result, several Trop-2-targeted therapeutics have recently been developed for clinical use, such as anti-Trop-2 antibodies and Trop-2-targeted antibody-drug conjugates (ADC). Subsequently, multiple early-phase clinical trials have demonstrated safety and clinical benefit of Trop-2-based ADCs across multiple tumor types. This includes clinical benefit and tolerability in tumor types with limited treatment options, such as triple-negative breast cancer, platinum-resistant urothelial cancer, and small-cell lung cancer. In this review, we elaborate on all clinical trials involving Trop-2.
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Affiliation(s)
- Saif Zaman
- Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Hassan Jadid
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA,
| | - Aaron C Denson
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA,
| | - Jhanelle E Gray
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA,
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24
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Antigenic Targets for the Immunotherapy of Acute Myeloid Leukaemia. J Clin Med 2019; 8:jcm8020134. [PMID: 30678059 PMCID: PMC6406328 DOI: 10.3390/jcm8020134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 01/10/2019] [Accepted: 01/20/2019] [Indexed: 12/18/2022] Open
Abstract
One of the most promising approaches to preventing relapse is the stimulation of the body’s own immune system to kill residual cancer cells after conventional therapy has destroyed the bulk of the tumour. In acute myeloid leukaemia (AML), the high frequency with which patients achieve first remission, and the diffuse nature of the disease throughout the periphery, makes immunotherapy particularly appealing following induction and consolidation therapy, using chemotherapy, and where possible stem cell transplantation. Immunotherapy could be used to remove residual disease, including leukaemic stem cells from the farthest recesses of the body, reducing, if not eliminating, the prospect of relapse. The identification of novel antigens that exist at disease presentation and can act as targets for immunotherapy have also proved useful in helping us to gain a better understand of the biology that belies AML. It appears that there is an additional function of leukaemia associated antigens as biomarkers of disease state and survival. Here, we discuss these findings.
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25
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Goldenberg DM, Stein R, Sharkey RM. The emergence of trophoblast cell-surface antigen 2 (TROP-2) as a novel cancer target. Oncotarget 2018; 9:28989-29006. [PMID: 29989029 PMCID: PMC6034748 DOI: 10.18632/oncotarget.25615] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/31/2018] [Indexed: 12/31/2022] Open
Abstract
TROP-2 is a glycoprotein first described as a surface marker of trophoblast cells, but subsequently shown to be increased in many solid cancers, with lower expression in certain normal tissues. It regulates cancer growth, invasion and spread by several signaling pathways, and has a role in stem cell biology and other diseases. This review summarizes TROP-2's properties, especially in cancer, and particularly its role as a target for antibody-drug conjugates (ADC) or immunotherapy. When the irinotecan metabolite, SN-38, is conjugated to a humanized anti-TROP-2 antibody (sacituzumab govitecan), it shows potent broad anticancer activity in human cancer xenografts and in patients with advanced triple-negative breast, non-small cell and small-cell lung, as well as urothelial cancers.
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Affiliation(s)
- David M. Goldenberg
- Center for Molecular Medicine and Immunology, Belleville, NJ, USA
- IBC Pharmaceuticals, Inc., Morris Plains, NJ, USA
| | - Rhona Stein
- Center for Molecular Medicine and Immunology, Belleville, NJ, USA
| | - Robert M. Sharkey
- Center for Molecular Medicine and Immunology, Belleville, NJ, USA
- Immunomedics, Inc., Morris Plains, NJ, USA
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26
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Inamura K, Yokouchi Y, Kobayashi M, Ninomiya H, Sakakibara R, Subat S, Nagano H, Nomura K, Okumura S, Shibutani T, Ishikawa Y. Association of tumor TROP2 expression with prognosis varies among lung cancer subtypes. Oncotarget 2018; 8:28725-28735. [PMID: 28404926 PMCID: PMC5438686 DOI: 10.18632/oncotarget.15647] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 01/27/2017] [Indexed: 01/04/2023] Open
Abstract
TROP2 is a transmembrane glycoprotein that is overexpressed in various cancers. Emerging evidence suggests that TROP2-targeting therapies are efficacious and safe in patients with multiple prior treatments. TROP2 is a promising target for lung cancer treatment; however, little is known regarding the association of TROP2 expression with clinicopathological/molecular features, including prognosis, in lung cancer. We examined consecutive cases of adenocarcinoma, squamous cell carcinoma (SqCC), and high-grade neuroendocrine tumor (HGNET) for the membranous expression of TROP2 using immunohistochemistry. High TROP2 expression was observed in 64% (172/270) of adenocarcinomas, 75% (150/201) of SqCCs, and 18% (21/115) of HGNETs. Intriguingly, the association of TROP2 expression with mortality was dependent on the lung cancer subtype. High TROP2 expression was associated with higher lung cancer-specific mortality in adenocarcinomas [univariable hazard ratio (HR) = 1.60, 95% confidence interval (CI) = 1.07–2.44, P = 0.022)], but not in SqCCs (univariable HR = 0.79, 95% CI = 0.35–1.94, P = 0.79). In HGNETs, high TROP2 expression was associated with lower lung cancer-specific mortality in both univariable and multivariable analyses (multivariable HR = 0.13, 95% CI = 0.020–0.44, P = 0.0003). Our results suggest a differential role for TROP2 in different lung cancer subtypes.
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Affiliation(s)
- Kentaro Inamura
- Division of Pathology, The Cancer Institute; Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo 135-8550, Japan
| | - Yusuke Yokouchi
- Translational Medicine & Clinical Pharmacology Department, Daiichi Sankyo Co., Ltd., Shinagawa-ku, Tokyo 140-0005, Japan
| | - Maki Kobayashi
- Division of Pathology, The Cancer Institute; Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo 135-8550, Japan
| | - Hironori Ninomiya
- Division of Pathology, The Cancer Institute; Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo 135-8550, Japan
| | - Rie Sakakibara
- Division of Pathology, The Cancer Institute; Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo 135-8550, Japan.,Department of Integrated Pulmonology, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Sophia Subat
- Division of Pathology, The Cancer Institute; Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo 135-8550, Japan
| | - Hiroko Nagano
- Division of Pathology, The Cancer Institute; Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo 135-8550, Japan
| | - Kimie Nomura
- Division of Pathology, The Cancer Institute; Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo 135-8550, Japan
| | - Sakae Okumura
- Thoracic Oncology Center, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo 135-8550, Japan
| | - Tomoko Shibutani
- Translational Medicine & Clinical Pharmacology Department, Daiichi Sankyo Co., Ltd., Shinagawa-ku, Tokyo 140-0005, Japan
| | - Yuichi Ishikawa
- Division of Pathology, The Cancer Institute; Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Koto-ku, Tokyo 135-8550, Japan
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27
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Abstract
The antibody-drug conjugate (ADC) field is in a transitional period. Older approaches to conjugate composition and dosing regimens still dominate the ADC clinical pipeline, but preclinical work is driving a rapid evolution in how we strategize to improve efficacy and reduce toxicity towards better therapeutic outcomes. These advances are largely based upon a body of investigational studies that together offer a deeper understanding of the absorption, distribution, metabolism, and excretion (ADME) and drug metabolism and pharmacokinetics (DMPK) fates of both the intact conjugate and its small-molecule component. Knowing where the drug goes and how it is processed allows mechanistic connections to be drawn with commonly observed clinical toxicities. The field is also starting to consider ADC interactions with the immune system and potential synergistic therapeutic opportunities therein. In an indication of future directions for the field, antibody conjugates bearing non-cytotoxic small-molecule payloads are being developed to reduce side effects associated with treatment of chronic diseases. ADCs are not a magic bullet to cure disease. However, they will increasingly become valuable therapeutic tools to improve patient outcomes across a variety of indications.
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Affiliation(s)
- Penelope M Drake
- Catalent Biologics, 5703 Hollis Street, Emeryville, CA, 94608, USA
| | - David Rabuka
- Catalent Biologics, 5703 Hollis Street, Emeryville, CA, 94608, USA.
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28
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Fu ZY. Role of ATP-binding cassette transporters, apoptosis, and long non-coding RNAs in gastric cancer multidrug resistance. Shijie Huaren Xiaohua Zazhi 2017; 25:2838-2850. [DOI: 10.11569/wcjd.v25.i32.2838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Cancer multidrug resistance refers to the cross resistance of cancer cells to a variety of anticancer drugs, which can be primary or secondary. Several mechanisms attribute to cancer multidrug resistance. In this paper, the recent progress in the understanding of the mechanisms of multi-drug resistance of gastric cancer cells with regard to the role of adenosine triphosphate binding cassette transporters, apoptosis, and long non-coding RNAs is reviewed.
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Affiliation(s)
- Zhao-Ying Fu
- Institute of Molecular Biology and Immunology, Medical School of Yan'an University, Yan'an 716000, Shaanxi Province, China
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29
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Cardillo TM, Govindan SV, Zalath MB, Rossi DL, Wang Y, Chang CH, Goldenberg DM. IMMU-140, a Novel SN-38 Antibody-Drug Conjugate Targeting HLA-DR, Mediates Dual Cytotoxic Effects in Hematologic Cancers and Malignant Melanoma. Mol Cancer Ther 2017; 17:150-160. [PMID: 29133623 DOI: 10.1158/1535-7163.mct-17-0354] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 07/13/2017] [Accepted: 10/24/2017] [Indexed: 11/16/2022]
Abstract
HLA-DR is a member of the MHC class II antigen family expressed on hematologic and solid tumors. Antibodies directed against HLA-DR have demonstrated some clinical success, but toxicities limited development. IMMU-140 is an anti-HLA-DR antibody-drug conjugate composed of the active metabolite of irinotecan, SN-38, conjugated to a humanized anti-HLA-DR IgG4 antibody (IMMU-114); the IgG4 naked antibody is devoid of immune functions. Our aim was to determine if SN-38, the metabolite of a drug not commonly used in hematopoietic cancers, would be effective and safe when targeted to HLA-DR-expressing tumors. IMMU-140 had dual-therapeutic mechanisms, as evidenced by its retention of nonoverlapping anti-HLA-DR nonclassical apoptotic signaling and classical apoptosis mediated by its SN-38 payload. In seven human disease models [acute lymphocytic leukemia (ALL), chronic lymphocytic leukemia (CLL), multiple myeloma (MM), acute myeloid leukemia (AML), diffuse large B-cell lymphoma (DLBCL), Hodgkin lymphoma (HL), and melanoma], IMMU-140 provided significant therapeutic efficacy compared with controls, in vitro, in 3D spheroid models, and in vivo Except for MM and HL, IMMU-140 imparted significantly improved antitumor effects compared with parental IMMU-114. Even in intractable AML and ALL, where IMMU-114 only had modest antitumor effects, IMMU-140 therapy mediated >80% improvement in survival. Therapy was well tolerated, as demonstrated by no marked loss in body weight. Combined with doxorubicin, IMMU-140 produced significantly greater antitumor effects in HL than with monotherapy and without any added toxicity. The dual-therapeutic action of IMMU-140 resulted in promising therapeutic activity in a range of hematopoietic tumors and melanoma, and therefore warrants clinical development. Mol Cancer Ther; 17(1); 150-60. ©2017 AACR.
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Affiliation(s)
| | | | | | | | - Yang Wang
- Immunomedics, Inc., Morris Plains, New Jersey
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30
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Chang CH, Wang Y, Li R, Rossi DL, Liu D, Rossi EA, Cardillo TM, Goldenberg DM. Combination Therapy with Bispecific Antibodies and PD-1 Blockade Enhances the Antitumor Potency of T Cells. Cancer Res 2017; 77:5384-5394. [PMID: 28819027 DOI: 10.1158/0008-5472.can-16-3431] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 05/24/2017] [Accepted: 08/04/2017] [Indexed: 11/16/2022]
Abstract
The DOCK-AND-LOCK (DNL) method is a platform technology that combines recombinant engineering and site-specific conjugation to create multispecific, multivalent antibodies of defined composition with retained bioactivity. We have applied DNL to generate a novel class of trivalent bispecific antibodies (bsAb), each comprising an anti-CD3 scFv covalently conjugated to a stabilized dimer of different antitumor Fabs. Here, we report the further characterization of two such constructs, (E1)-3s and (14)-3s, which activate T cells and target Trop-2- and CEACAM5-expressing cancer cells, respectively. (E1)-3s and (14)-3s, in the presence of human T cells, killed target cells grown as monolayers at subnanomolar concentrations, with a similar potency observed for drug-resistant cells. Antitumor efficacy was demonstrated for (E1)-3s coadministered with human peripheral blood mononuclear cells (PBMC) in NOD/SCID mice harboring xenografts of MDA-MB-231, a triple-negative breast cancer line constitutively expressing Trop-2 and PD-L1. Growth inhibition was observed following treatment with (E1)-3s or (14)-3s combined with human PBMC in 3D spheroids generated from target cell lines to mimic the in vivo behavior and microenvironment of these tumors. Moreover, addition of an antagonistic anti-PD-1 antibody increased cell death in 3D spheroids and extended survival of MDA-MB-231-bearing mice. These preclinical results emphasize the potential of combining T-cell-redirecting bsAbs with antagonists or agonists that mitigate T-cell inhibition within the tumor microenvironment to improve immunotherapy of solid cancers in patients. They also support the use of 3D spheroids as a predictive alternative to in vivo models for evaluating T-cell functions. Cancer Res; 77(19); 5384-94. ©2017 AACR.
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Affiliation(s)
- Chien-Hsing Chang
- Immunomedics, Inc., Morris Plains, New Jersey. .,IBC Pharmaceuticals, Inc., Morris Plains, New Jersey
| | - Yang Wang
- Immunomedics, Inc., Morris Plains, New Jersey
| | - Rongxiu Li
- Immunomedics, Inc., Morris Plains, New Jersey
| | | | - Donglin Liu
- Immunomedics, Inc., Morris Plains, New Jersey.,IBC Pharmaceuticals, Inc., Morris Plains, New Jersey
| | | | | | - David M Goldenberg
- Immunomedics, Inc., Morris Plains, New Jersey.,IBC Pharmaceuticals, Inc., Morris Plains, New Jersey
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31
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Pan L, Lin H, Tian S, Bai D, Kong Y, Yu L. The sensitivity of glioma cells to pyropheophorbide-αmethyl ester-mediated photodynamic therapy is enhanced by inhibiting ABCG2. Lasers Surg Med 2017; 49:719-726. [PMID: 28370217 DOI: 10.1002/lsm.22661] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/25/2017] [Indexed: 01/09/2023]
Abstract
BACKGROUND AND OBJECTIVE To study the mechanisms of human glioblastoma cell resistance to methyl ester pyropheophorbide-a-mediated photodynamic therapy (MPPa-PDT) and the relationship between the cells and adenosine triphosphate-binding cassette superfamily G member 2 (ABCG2). STUDY DESIGN/MATERIALS AND METHODS The sensitivity of four human glioma cell lines (U87, A172, SHG-44, and U251) to MPPa-PDT was detected with a CCK-8 assay. Cell apoptosis, intracellular MPPa, and singlet oxygen were tested with flow cytometry. The mRNA and protein expression of ATP-binding cassette transporters (ABCG2, MRP1, and MDR1) were detected by PCR and Western blot, respectively. RESULTS Both the sensitivity to MPPa-PDT and intracellular MPPa in A172 were the lowest among the four cell lines, while expression of ABCG2 mRNA and protein in A172 were the highest. The intracellular MPPa and ROS in A172 receiving MPPa-PDT significantly increased after using the ABCG2 inhibitor fumitremorgin C (FTC). Both cell viability and apoptosis in A172 cells undergoing MPPa-PDT were significantly improved with FTC. CONCLUSIONS ABCG2 plays a significant role in the resistance of A172 to MPPa-PDT. Lasers Surg. Med. 49:719-726, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Li Pan
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R. China
| | - Haidan Lin
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R. China
| | - Si Tian
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R. China
| | - Dingqun Bai
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R. China
| | - Yuhan Kong
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R. China
| | - Lehua Yu
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, P.R. China
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