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Duan Z, Shi R, Gao B, Cai J. N-linked glycosylation of PD-L1/PD-1: an emerging target for cancer diagnosis and treatment. J Transl Med 2024; 22:705. [PMID: 39080767 PMCID: PMC11290144 DOI: 10.1186/s12967-024-05502-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 07/10/2024] [Indexed: 08/02/2024] Open
Abstract
During tumorigenesis and progression, the immune checkpoint programmed death-1 (PD-1) and its ligand programmed death ligand-1 (PD-L1) play critical roles in suppressing T cell-mediated anticancer immune responses, leading to T-cell exhaustion and subsequent tumor evasion. Therefore, anti-PD-L1/PD-1 therapy has been an attractive strategy for treating cancer over the past decade. However, the overall efficacy of this approach remains suboptimal, revealing an urgent need for novel insights. Interestingly, increasing evidence indicates that both PD-L1 on tumor cells and PD-1 on tumor-specific T cells undergo extensive N-linked glycosylation, which is essential for the stability and interaction of these proteins, and this modification promotes tumor evasion. In various preclinical models, targeting the N-linked glycosylation of PD-L1/PD-1 was shown to significantly increase the efficacy of PD-L1/PD-1 blockade therapy. Furthermore, deglycosylation of PD-L1 strengthens the signal intensity in PD-L1 immunohistochemistry (IHC) assays, improving the diagnostic and therapeutic relevance of this protein. In this review, we provide an overview of the regulatory mechanisms underlying the N-linked glycosylation of PD-L1/PD-1 as well as the crucial role of N-linked glycosylation in PD-L1/PD-1-mediated immune evasion. In addition, we highlight the promising implications of targeting the N-linked glycosylation of PD-L1/PD-1 in the clinical diagnosis and treatment of cancer. Our review identifies knowledge gaps and sheds new light on the cancer research field.
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Affiliation(s)
- Zhiyun Duan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, P.R. China
- Department of Immunology, School of Basic Medical Sciences, Shanghai Medical College of Fudan University, Shanghai, 200032, P.R. China
| | - Runhan Shi
- Department of Immunology, School of Basic Medical Sciences, Shanghai Medical College of Fudan University, Shanghai, 200032, P.R. China
- Department of Ophthalmology and Vision Science, Shanghai Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, 200031, P.R. China
| | - Bo Gao
- Department of Immunology, School of Basic Medical Sciences, Shanghai Medical College of Fudan University, Shanghai, 200032, P.R. China
| | - Jiabin Cai
- Department of Liver Surgery and Transplantation, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Liver Cancer Institute, Fudan University, Shanghai, 200032, P.R. China.
- Department of Liver Surgery, Xiamen Branch, Zhongshan Hospital, Fudan University, Xiamen, 361015, P.R. China.
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2
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Yamaguchi H, Hsu JM, Sun L, Wang SC, Hung MC. Advances and prospects of biomarkers for immune checkpoint inhibitors. Cell Rep Med 2024; 5:101621. [PMID: 38906149 PMCID: PMC11293349 DOI: 10.1016/j.xcrm.2024.101621] [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: 01/11/2024] [Revised: 04/22/2024] [Accepted: 05/29/2024] [Indexed: 06/23/2024]
Abstract
Immune checkpoint inhibitors (ICIs) activate anti-cancer immunity by blocking T cell checkpoint molecules such as programmed death 1 (PD-1) and cytotoxic T lymphocyte-associated protein 4 (CTLA-4). Although ICIs induce some durable responses in various cancer patients, they also have disadvantages, including low response rates, the potential for severe side effects, and high treatment costs. Therefore, selection of patients who can benefit from ICI treatment is critical, and identification of biomarkers is essential to improve the efficiency of ICIs. In this review, we provide updated information on established predictive biomarkers (tumor programmed death-ligand 1 [PD-L1] expression, DNA mismatch repair deficiency, microsatellite instability high, and tumor mutational burden) and potential biomarkers currently under investigation such as tumor-infiltrated and peripheral lymphocytes, gut microbiome, and signaling pathways related to DNA damage and antigen presentation. In particular, this review aims to summarize the current knowledge of biomarkers, discuss issues, and further explore future biomarkers.
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Affiliation(s)
- Hirohito Yamaguchi
- Graduate Institute of Cell Biology, China Medical University, Taichung City 406040, Taiwan; Graduate Institute of Biomedical Sciences and Institute of Biochemistry and Molecular Biology, China Medical University, Taichung City 406040, Taiwan; Cancer Biology and Precision Therapeutics Center and Research Center for Cancer Biology, China Medical University, Taichung City 40402, Taiwan
| | - Jung-Mao Hsu
- Graduate Institute of Biomedical Sciences and Institute of Biochemistry and Molecular Biology, China Medical University, Taichung City 406040, Taiwan; Cancer Biology and Precision Therapeutics Center and Research Center for Cancer Biology, China Medical University, Taichung City 40402, Taiwan
| | - Linlin Sun
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Shao-Chun Wang
- Graduate Institute of Biomedical Sciences and Institute of Biochemistry and Molecular Biology, China Medical University, Taichung City 406040, Taiwan; Cancer Biology and Precision Therapeutics Center and Research Center for Cancer Biology, China Medical University, Taichung City 40402, Taiwan; Center for Molecular Medicine, China Medical University Hospital, Taichung City 40402, Taiwan
| | - Mien-Chie Hung
- Graduate Institute of Biomedical Sciences and Institute of Biochemistry and Molecular Biology, China Medical University, Taichung City 406040, Taiwan; Cancer Biology and Precision Therapeutics Center and Research Center for Cancer Biology, China Medical University, Taichung City 40402, Taiwan; Center for Molecular Medicine, China Medical University Hospital, Taichung City 40402, Taiwan.
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Zdrenka M, Kowalewski A, Ahmadi N, Sadiqi RU, Chmura Ł, Borowczak J, Maniewski M, Szylberg Ł. Refining PD-1/PD-L1 assessment for biomarker-guided immunotherapy: A review. BIOMOLECULES & BIOMEDICINE 2024; 24:14-29. [PMID: 37877810 PMCID: PMC10787614 DOI: 10.17305/bb.2023.9265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/23/2023] [Accepted: 06/23/2023] [Indexed: 10/26/2023]
Abstract
Anti-programmed cell death ligand 1 (anti-PD-L1) immunotherapy is an increasingly crucial in cancer treatment. To date, the Federal Drug Administration (FDA) has approved four PD-L1 immunohistochemistry (IHC) staining protocols, commercially available in the form of "kits", facilitating testing for PD-L1 expression. These kits comprise four PD-L1 antibodies on two separate IHC platforms, each utilizing distinct, non-interchangeable scoring systems. Several factors, including tumor heterogeneity and the size of the tissue specimens assessed, can lead to PD-L1 status misclassification, potentially hindering the initiation of therapy. Therefore, the development of more accurate predictive biomarkers to distinguish between responders and non-responders prior to anti-PD-1/PD-L1 therapy warrants further research. Achieving this goal necessitates refining sampling criteria, enhancing current methods of PD-L1 detection, and deepening our understanding of the impact of additional biomarkers. In this article, we review potential solutions to improve the predictive accuracy of PD-L1 assessment in order to more precisely anticipate patients' responses to anti-PD-1/PD-L1 therapy, monitor disease progression and predict clinical outcomes.
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Affiliation(s)
- Marek Zdrenka
- Department of Tumor Pathology and Pathomorphology, Oncology Centre-Prof. Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz, Poland
| | - Adam Kowalewski
- Department of Tumor Pathology and Pathomorphology, Oncology Centre-Prof. Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz, Poland
| | - Navid Ahmadi
- Department of Cardiothoracic Surgery, Royal Papworth Hospital, Cambridge, UK
| | | | - Łukasz Chmura
- Department of Pathomorphology, Jagiellonian University Medical College, Kraków, Poland
| | - Jędrzej Borowczak
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
| | - Mateusz Maniewski
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
| | - Łukasz Szylberg
- Department of Tumor Pathology and Pathomorphology, Oncology Centre-Prof. Franciszek Łukaszczyk Memorial Hospital, Bydgoszcz, Poland
- Department of Obstetrics, Gynaecology and Oncology, Chair of Pathomorphology and Clinical Placentology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
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Xiao L, Guan X, Xiang M, Wang Q, Long Q, Yue C, Chen L, Liu J, Liao C. B7 family protein glycosylation: Promising novel targets in tumor treatment. Front Immunol 2022; 13:1088560. [PMID: 36561746 PMCID: PMC9763287 DOI: 10.3389/fimmu.2022.1088560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022] Open
Abstract
Cancer immunotherapy, including the inhibition of immune checkpoints, improves the tumor immune microenvironment and is an effective tool for cancer therapy. More effective and alternative inhibitory targets are critical for successful immune checkpoint blockade therapy. The interaction of the immunomodulatory ligand B7 family with corresponding receptors induces or inhibits T cell responses by sending co-stimulatory and co-inhibitory signals respectively. Blocking the glycosylation of the B7 family members PD-L1, PD-L2, B7-H3, and B7-H4 inhibited the self-stability and receptor binding of these immune checkpoint proteins, leading to immunosuppression and rapid tumor progression. Therefore, regulation of glycosylation may be the "golden key" to relieve tumor immunosuppression. The exploration of a more precise glycosylation regulation mechanism and glycan structure of B7 family proteins is conducive to the discovery and clinical application of antibodies and small molecule inhibitors.
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Affiliation(s)
- Linlin Xiao
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China,Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
| | - Xiaoyan Guan
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China,Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
| | - Mingli Xiang
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China,Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
| | - Qian Wang
- Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
| | - Qian Long
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China,Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
| | - Chaoyi Yue
- School of Medicine and Technology, Zunyi Medical University, Zunyi, China
| | - Lulu Chen
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China,Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China
| | - Jianguo Liu
- Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China,*Correspondence: Chengcheng Liao, ; Jianguo Liu,
| | - Chengcheng Liao
- Department of Orthodontics II, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China,Oral Disease Research Key Laboratory of Guizhou Tertiary Institution, School of Stomatology, Zunyi Medical University, Zunyi, China,*Correspondence: Chengcheng Liao, ; Jianguo Liu,
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5
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Lin ZF, Qin LX, Chen JH. Biomarkers for response to immunotherapy in hepatobiliary malignancies. Hepatobiliary Pancreat Dis Int 2022; 21:413-419. [PMID: 35973935 DOI: 10.1016/j.hbpd.2022.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 07/29/2022] [Indexed: 02/05/2023]
Abstract
BACKGROUND The advent of immune checkpoint inhibitors (ICIs) has revolutionized the therapeutic options of hepatobiliary malignancies. However, the clinical benefit provided by immunotherapy seems limited to a small subgroup of patients with hepatobiliary malignancies. The identification of reliable predictors of the response to immunotherapy is urgently needed. DATA SOURCES Literature search was conducted in PubMed for relevant articles published up to May 2022. Information of clinical trials was obtained from https://clinicaltrials.gov/. RESULTS Biomarkers for ICI response of hepatobiliary malignancies remain in the exploration stage and lack compelling evidence. Tumor programmed death-ligand 1 (PD-L1) expression is the most widely studied biomarker in hepatocellular carcinoma (HCC) and biliary tract cancers (BTCs), but there are conflicting results on its predictive potential. Tumor mutational burden (TMB) is generally low both in HCC and BTCs, and the clinical trials of TMB are rare in hepatobiliary malignancies. Promisingly, mismatch repair deficiency (dMMR)/high microsatellite instability (MSI-H) may be a predictive biomarker of response to anti-PD-1 therapy in BTCs. Furthermore, some emerging biomarkers, such as gut microbiota, show predictive potential in the preliminary studies. Radiomics and liquid-biopsy biomarkers, including circulating tumor cells, circulating tumor DNA (ctDNA) and exosomal PD-L1 provide a quick and non-invasive approach for monitoring the ICI response, showing a new promising direction. CONCLUSIONS Multiple potential biomarkers for predicting ICI response of hepatobiliary malignancies have been explored and tried to apply in clinic. Yet there is no robust evidence to prove their clinical value in predicting immunotherapeutic response for patients with hepatobiliary malignancies. The identification of predictors for response to ICIs is an urgent need and major challenge. Further studies are warranted to validate the role of emerging biomarkers in predicting immunotherapeutic responses.
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Affiliation(s)
- Zhi-Fei Lin
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai 200040, China
| | - Lun-Xiu Qin
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai 200040, China
| | - Jin-Hong Chen
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai 200040, China.
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6
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Cao P, Yang X, Liu D, Ye S, Yang W, Xie Z, Lei X. Research progress of
PD‐L1
non‐glycosylation in cancer immunotherapy. Scand J Immunol 2022. [DOI: 10.1111/sji.13205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pu Cao
- School of Pharmacy, Hengyang Medical College, University of South China Hengyang Hunan P.R. China
| | - Xiaoyan Yang
- School of Pharmacy, Hengyang Medical College, University of South China Hengyang Hunan P.R. China
| | - Daquan Liu
- School of Pharmacy, Hengyang Medical College, University of South China Hengyang Hunan P.R. China
| | - Simin Ye
- School of Pharmacy, Hengyang Medical College, University of South China Hengyang Hunan P.R. China
| | - Wei Yang
- School of Pharmacy, Hengyang Medical College, University of South China Hengyang Hunan P.R. China
| | - Zhizhong Xie
- School of Pharmacy, Hengyang Medical College, University of South China Hengyang Hunan P.R. China
| | - Xiaoyong Lei
- School of Pharmacy, Hengyang Medical College, University of South China Hengyang Hunan P.R. China
- The Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, University of South China Hengyang Hunan P.R. China
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7
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Yamaguchi H, Wang S, Hung M. Prospects of the potential strategies to improve the efficacy of anti-PD-1/PD-L1 therapy. Clin Transl Med 2022; 12:e803. [PMID: 35588146 PMCID: PMC9119611 DOI: 10.1002/ctm2.803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 03/22/2022] [Accepted: 03/22/2022] [Indexed: 01/01/2023] Open
Affiliation(s)
- Hirohito Yamaguchi
- Graduate Institute of Biomedical SciencesCollege of Medicine, China Medical UniversityTaichungTaiwan
- Research Center for Cancer BiologyChina Medical UniversityTaichungTaiwan
| | - Shao‐Chun Wang
- Graduate Institute of Biomedical SciencesCollege of Medicine, China Medical UniversityTaichungTaiwan
- Research Center for Cancer BiologyChina Medical UniversityTaichungTaiwan
| | - Mien‐Chie Hung
- Graduate Institute of Biomedical SciencesCollege of Medicine, China Medical UniversityTaichungTaiwan
- Research Center for Cancer BiologyChina Medical UniversityTaichungTaiwan
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8
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Wang YN, Lee HH, Wei Y, Chu YY, Xia W, Wang M, Yu D, Hung MC. An optimized protocol for PD-L1 pathological assessment with patient sample deglycosylation to improve correlation with therapeutic response. STAR Protoc 2022; 3:101198. [PMID: 35243381 PMCID: PMC8885744 DOI: 10.1016/j.xpro.2022.101198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Immunotherapy via PD-1/PD-L1 blockade is a promising strategy to eradicate cancer cells. However, the PD-L1 pathological level is inconsistent with the therapeutic response and is not a reliable biomarker to stratify patients for anti-PD-1/PD-L1 therapy. Here, we describe patient sample deglycosylation in an immunohistochemistry (IHC) assay to resolve this challenge. This protocol facilitates antigen retrieval by removing N-glycans from surface antigens on formalin-fixed paraffin-embedded (FFPE) tissue slides and can be applied in medical pathology for multiple cancer types. For complete details on the use and execution of this profile, please refer to Lee et al. (2019).
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Affiliation(s)
- Ying-Nai Wang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Heng-Huan Lee
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yongkun Wei
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yu-Yi Chu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Weiya Xia
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Graduate Institute of Biomedical Sciences, Research Center for Cancer Biology, and Center for Molecular Medicine, China Medical University, Taichung 404, Taiwan
| | - Michael Wang
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Dihua Yu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- UTHealth Graduate School of Biomedical Sciences, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Graduate Institute of Biomedical Sciences, Research Center for Cancer Biology, and Center for Molecular Medicine, China Medical University, Taichung 404, Taiwan
- Department of Biotechnology, Asia University, Taichung 413, Taiwan
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Ou-Yang F, Li CL, Chen CC, Shen YC, Moi SH, Luo CW, Xia WY, Wang YN, Lee HH, Wang LH, Wang SC, Pan MR, Hou MF, Hung MC. De-glycosylated membrane PD-L1 in tumor tissues as a biomarker for responsiveness to atezolizumab (Tecentriq) in advanced breast cancer patients. Am J Cancer Res 2022; 12:123-137. [PMID: 35141008 PMCID: PMC8822291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 12/07/2021] [Indexed: 06/14/2023] Open
Abstract
The atezolizumab (Tecentriq), a humanized antibody against human programmed death ligand 1 (PD-L1), combined with nab-paclitaxel was granted with accelerated approval to treat unresectable locally advanced or metastatic triple-negative breast cancer (TNBC) due to the encouraging positive results of the phase 3 IMpassion130 trial using PD-L1 biomarker from immune cells to stratify patients. However, the post-market study IMpassion131 did not support the original observation, resulting in the voluntary withdrawal of atezolizumab from the indication in breast cancer by Genentech in 2021. Emerging evidence has revealed a high frequency of false negative result using the standard immunohistochemical (IHC) staining due to heavy glycosylation of PD-L1. The removal of glycosylation prevents from the false negative staining, enabling more accurate assessment of PD-L1 levels and improving prediction for response to immune checkpoint therapy. In the present study, the natural and de-glycosylated PD-L1 expression in tumor and immune cells from nine TNBC patients were analyzed by using clone 28-8 monoclonal antibody to correlate with treatment outcome. Our results demonstrate that: (1) Removal of the glycosylation indeed enhances the detection of PD-L1 by IHC staining, (2) The PD-L1 levels on tumor cell surface after removal of the glycosylation correlates well with clinical responses for atezolizumab treatment; (3) The criteria used in the IMpassion130 and IMpassion131 trials which scored the natural PD-L1 in the immune cells failed to correlate with the clinical response. Taken together, tumor cell surface staining of PD-L1 with de-glycosylation has a significant correlation with the clinical response for atezolizumab treatment, suggesting that treatment of atezolizumab may be worthy of further consideration with de-glycosylation procedure as a patient stratification strategy. A larger cohort to validate this important issue is warranted to ensure right patient population who could benefit from the existing FDA-approved drugs.
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Affiliation(s)
- Fu Ou-Yang
- Division of Breast Oncology and Surgery, Department of Surgery, Kaohsiung Medical University HospitalKaohsiung 80756, Taiwan
| | - Chung-Liang Li
- Division of Breast Oncology and Surgery, Department of Surgery, Kaohsiung Medical University HospitalKaohsiung 80756, Taiwan
| | - Chia-Chi Chen
- Department of Pathology, E-Da Hospital and I-Shou UniversityKaohsiung 82445, Taiwan
| | - Yi-Chun Shen
- Research Center for Cancer Biology, China Medical UniversityTaichung 40402, Taiwan
| | - Sin-Hua Moi
- Center of Cancer Program Development, E-Da Cancer Hospital, I-Shou UniversityKaohsiung 82445, Taiwan
| | - Chi-Wen Luo
- Division of Breast Oncology and Surgery, Department of Surgery, Kaohsiung Medical University HospitalKaohsiung 80756, Taiwan
| | - Wei-Ya Xia
- Research Center for Cancer Biology, China Medical UniversityTaichung 40402, Taiwan
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX 77030, USA
- Center for Molecular Medicine, China Medical University HospitalTaichung 40447, Taiwan
| | - Ying-Nai Wang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX 77030, USA
| | - Heng-Huan Lee
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer CenterHouston, TX 77030, USA
| | - Lu-Hai Wang
- Graduate Institute of Integrated Medicine, China Medical UniversityTaichung 40402, Taiwan
- Chinese Medicine Research Center, China Medical UniversityTaichung 40402, Taiwan
| | - Shao-Chun Wang
- Research Center for Cancer Biology, China Medical UniversityTaichung 40402, Taiwan
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical UniversityTaichung 40402, Taiwan
- Center for Molecular Medicine, China Medical University HospitalTaichung 40447, Taiwan
- Drug Development Center, China Medical UniversityTaichung 40402, Taiwan
- Department of Biotechnology, Asia UniversityTaichung 41354, Taiwan
| | - Mei-Ren Pan
- Graduate Institute of Clinical Medicine, Kaohsiung Medical UniversityKaohsiung 80756, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical UniversityKaohsiung 80756, Taiwan
| | - Ming-Feng Hou
- Division of Breast Oncology and Surgery, Department of Surgery, Kaohsiung Medical University HospitalKaohsiung 80756, Taiwan
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical UniversityKaohsiung 80756, Taiwan
| | - Mien-Chie Hung
- Research Center for Cancer Biology, China Medical UniversityTaichung 40402, Taiwan
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical UniversityTaichung 40402, Taiwan
- Center for Molecular Medicine, China Medical University HospitalTaichung 40447, Taiwan
- Department of Biotechnology, Asia UniversityTaichung 41354, Taiwan
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10
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Fu Y, Qian H, Zhou X, Wu Y, Song L, Chen K, Bai D, Yang Y, Li J, Xie G. Proximity ligation assay mediated rolling circle amplification strategy for in situ amplified imaging of glycosylated PD-L1. Anal Bioanal Chem 2021; 413:6929-6939. [PMID: 34523014 DOI: 10.1007/s00216-021-03659-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/07/2021] [Accepted: 09/09/2021] [Indexed: 11/30/2022]
Abstract
Glycosylated PD-L1 is a more reliable biomarker for immune checkpoint therapy and plays important roles in tumor immunity. Glycosylation of PD-L1 hinders antibody-based detection, which is partially responsible for the inconsistency between PD-L1 immunohistochemical results and therapeutic treatment response. Herein, we present a proximity ligation assay mediated rolling circle amplification (PLA-RCA) strategy for amplified imaging of glycosylated PD-L1 in situ. The strategy relies on a pair of DNA probes: an aptamer probe to specifically recognize cellular surface protein PD-L1 and a glycan conversion (GC) probe for metabolic glycan labeling. Upon proximity ligation of sequence binding to the two probes, the proximity ligation-triggered RCA occurs. The feasibility of the as-proposed strategy has been validated as it realized the visualization of PD-L1 glycosylation in different cancer cells and the monitoring of the variation of PD-L1 glycosylation during drug treatment. Thus, we envision the present work offers a useful alternative to track protein-specific glycosylation and potentially advances the investigation of the dynamic glycan state associated with the disease process.
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Affiliation(s)
- Yixin Fu
- Key Laboratory of Laboratory Medical Diagnostics of Education, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, Sichuan, 400016, People's Republic of China.,Department of Blood Transfusion, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, Guizhou, China
| | - Husun Qian
- Key Laboratory of Laboratory Medical Diagnostics of Education, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, Sichuan, 400016, People's Republic of China
| | - Xi Zhou
- Key Laboratory of Laboratory Medical Diagnostics of Education, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, Sichuan, 400016, People's Republic of China
| | - You Wu
- Key Laboratory of Laboratory Medical Diagnostics of Education, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, Sichuan, 400016, People's Republic of China
| | - Lin Song
- Key Laboratory of Laboratory Medical Diagnostics of Education, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, Sichuan, 400016, People's Republic of China
| | - Kena Chen
- Key Laboratory of Laboratory Medical Diagnostics of Education, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, Sichuan, 400016, People's Republic of China
| | - Dan Bai
- Key Laboratory of Laboratory Medical Diagnostics of Education, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, Sichuan, 400016, People's Republic of China
| | - Yujun Yang
- Key Laboratory of Laboratory Medical Diagnostics of Education, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, Sichuan, 400016, People's Republic of China
| | - Junjie Li
- Key Laboratory of Laboratory Medical Diagnostics of Education, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, Sichuan, 400016, People's Republic of China
| | - Guoming Xie
- Key Laboratory of Laboratory Medical Diagnostics of Education, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, Sichuan, 400016, People's Republic of China.
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