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Shi G, Synowiec J, Singh J, Heller R. Modification of the tumor microenvironment enhances immunity with plasmid gene therapy. Cancer Gene Ther 2024; 31:641-648. [PMID: 38337037 DOI: 10.1038/s41417-024-00728-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 11/27/2023] [Accepted: 01/09/2024] [Indexed: 02/12/2024]
Abstract
Local intratumor delivery with electroporation of low levels of plasmids encoding molecules, induces an antitumor effect without causing systemic toxicity. However, previous studies have predominately focused on the function of the delivered molecule encoded within the plasmid, and ignored the plasmid vector. In this study, we found vectors pUMVC3 and pVax1 induced upregulation of MHC class I (MHC-I) and PD-L1 on tumor cell surface. These molecules participate in a considerable number of immunoregulatory functions through their interactions with and activating inhibitory immune cell receptors. MHC molecules are well-known for their role in antigen (cross-) presentation, thereby functioning as key players in the communication between immune cells and tumor cells. Increased PD-L1 expression on tumor cells is an important monitor of tumor growth and the effectiveness of immune inhibitor therapy. Results from flow cytometry confirmed increased expression of MHC-I and PDL-1 on B16F10, 4T1, and KPC tumor cell lines. Preliminary animal data from tumor-bearing models, B16F10 melanoma, 4T1 breast cancer and KPC pancreatic cancer mouse models showed that tumor growth was attenuated after pUMVC3 intratumoral electroporation. Our data also documented that pSTAT1 signaling pathway might not be associated with plasmid vectors' function of upregulating MHC-I, PD-L1 on tumor cells.
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Affiliation(s)
- Guilan Shi
- Department of Medical Engineering, University of South Florida, Tampa, FL, 33612, USA
| | - Jody Synowiec
- Department of Medical Engineering, University of South Florida, Tampa, FL, 33612, USA
| | - Julie Singh
- Department of Medical Engineering, University of South Florida, Tampa, FL, 33612, USA
| | - Richard Heller
- Department of Medical Engineering, University of South Florida, Tampa, FL, 33612, USA.
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2
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Cho S, Kim W, Yoo D, Han Y, Hwang H, Kim S, Kim J, Park S, Park Y, Jo H, Pyun JC, Lee M. Impact of glucose metabolism on PD-L1 expression in sorafenib-resistant hepatocellular carcinoma cells. Sci Rep 2024; 14:1751. [PMID: 38243049 PMCID: PMC10798953 DOI: 10.1038/s41598-024-52160-x] [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: 08/10/2023] [Accepted: 01/15/2024] [Indexed: 01/21/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is the fifth leading cause of cancer-related mortality worldwide. Programmed cell death ligand-1 (PD-L1) is an immune checkpoint protein that binds to programmed cell death-1 (PD-1), which is expressed in activated T cells and other immune cells and has been employed in cancer therapy, including HCC. Recently, PD-L1 overexpression has been documented in treatment-resistant cancer cells. Sorafenib is a multikinase inhibitor and the only FDA-approved treatment for advanced HCC. However, several patients exhibit resistance to sorafenib during treatment. This study aimed to assess the effect of glucose deprivation on PD-L1 expression in HCC cells. We used PD-L1-overexpressing HepG2 cells and IFN-γ-treated SK-Hep1 cells to explore the impact of glycolysis on PD-L1 expression. To validate the correlation between PD-L1 expression and glycolysis, we analyzed data from The Cancer Genome Atlas (TCGA) and used immunostaining for HCC tissue analysis. Furthermore, to modulate PD-L1 expression, we treated HepG2, SK-Hep1, and sorafenib-resistant SK-Hep1R cells with rapamycin. Here, we found that glucose deprivation reduced PD-L1 expression in HCC cells. Additionally, TCGA data and immunostaining analyses confirmed a positive correlation between the expression of hexokinase II (HK2), which plays a key role in glucose metabolism, and PD-L1. Notably, rapamycin treatment decreased the expression of PD-L1 and HK2 in both high PD-L1-expressing HCC cells and sorafenib-resistant cells. Our results suggest that the modulation of PD-L1 expression by glucose deprivation may represent a strategy to overcome PD-L1 upregulation in patients with sorafenib-resistant HCC.
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Affiliation(s)
- Sua Cho
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Wonjin Kim
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Dayoung Yoo
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Yeonju Han
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Hyemin Hwang
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Seunghwan Kim
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Jimin Kim
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Sanghee Park
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Yusun Park
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - HanHee Jo
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
- Neurosciences Graduate Program, University of California, San Diego, La Jolla, CA, USA
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Misu Lee
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea.
- Institute for New Drug Development, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea.
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3
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García-Pérez BE, Pérez-Torres C, Baltierra-Uribe SL, Castillo-Cruz J, Castrejón-Jiménez NS. Autophagy as a Target for Non-Immune Intrinsic Functions of Programmed Cell Death-Ligand 1 in Cancer. Int J Mol Sci 2023; 24:15016. [PMID: 37834467 PMCID: PMC10573536 DOI: 10.3390/ijms241915016] [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: 09/07/2023] [Revised: 09/27/2023] [Accepted: 10/07/2023] [Indexed: 10/15/2023] Open
Abstract
Autophagy is a catabolic process that is essential to the maintenance of homeostasis through the cellular recycling of damaged organelles or misfolded proteins, which sustains energy balance. Additionally, autophagy plays a dual role in modulating the development and progression of cancer and inducing a survival strategy in tumoral cells. Programmed cell death-ligand 1 (PD-L1) modulates the immune response and is responsible for maintaining self-tolerance. Because tumor cells exploit the PD-L1-PD-1 interaction to subvert the immune response, immunotherapy has been developed based on the use of PD-L1-blocking antibodies. Recent evidence has suggested a bidirectional regulation between autophagy and PD-L1 molecule expression in tumor cells. Moreover, the research into the intrinsic properties of PD-L1 has highlighted new functions that are advantageous to tumor cells. The relationship between autophagy and PD-L1 is complex and still not fully understood; its effects can be context-dependent and might differ between tumoral cells. This review refines our understanding of the non-immune intrinsic functions of PD-L1 and its potential influence on autophagy, how these could allow the survival of tumor cells, and what this means for the efficacy of anti-PD-L1 therapeutic strategies.
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Affiliation(s)
- Blanca Estela García-Pérez
- Departmento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Col. Santo Tomás, Alcaldía Miguel Hidalgo, Mexico City 11340, Mexico
| | - Christian Pérez-Torres
- Departmento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Col. Santo Tomás, Alcaldía Miguel Hidalgo, Mexico City 11340, Mexico
| | - Shantal Lizbeth Baltierra-Uribe
- Departmento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Col. Santo Tomás, Alcaldía Miguel Hidalgo, Mexico City 11340, Mexico
| | - Juan Castillo-Cruz
- Departmento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Col. Santo Tomás, Alcaldía Miguel Hidalgo, Mexico City 11340, Mexico
- Departmento de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala S/N, Col. Santo Tomás, Alcaldía Miguel Hidalgo, Mexico City 11340, Mexico
| | - Nayeli Shantal Castrejón-Jiménez
- Área Académica de Medicina Veterinaria y Zootecnia, Instituto de Ciencias Agropecuarias, Universidad Autónoma del Estado de Hidalgo, Av. Universidad km. 1. Exhacienda de Aquetzalpa A.P. 32, Tulancingo 43600, Mexico
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4
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Reda M, Ngamcherdtrakul W, Nelson MA, Siriwon N, Wang R, Zaidan HY, Bejan DS, Reda S, Hoang NH, Crumrine NA, Rehwaldt JPC, Bindal A, Mills GB, Gray JW, Yantasee W. Development of a nanoparticle-based immunotherapy targeting PD-L1 and PLK1 for lung cancer treatment. Nat Commun 2022; 13:4261. [PMID: 35871223 PMCID: PMC9308817 DOI: 10.1038/s41467-022-31926-9] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 07/11/2022] [Indexed: 12/14/2022] Open
Abstract
Immune checkpoint inhibitors (ICIs) targeting PD-L1 and PD-1 have improved survival in a subset of patients with advanced non-small cell lung cancer (NSCLC). However, only a minority of NSCLC patients respond to ICIs, highlighting the need for superior immunotherapy. Herein, we report on a nanoparticle-based immunotherapy termed ARAC (Antigen Release Agent and Checkpoint Inhibitor) designed to enhance the efficacy of PD-L1 inhibitor. ARAC is a nanoparticle co-delivering PLK1 inhibitor (volasertib) and PD-L1 antibody. PLK1 is a key mitotic kinase that is overexpressed in various cancers including NSCLC and drives cancer growth. Inhibition of PLK1 selectively kills cancer cells and upregulates PD-L1 expression in surviving cancer cells thereby providing opportunity for ARAC targeted delivery in a feedforward manner. ARAC reduces effective doses of volasertib and PD-L1 antibody by 5-fold in a metastatic lung tumor model (LLC-JSP) and the effect is mainly mediated by CD8+ T cells. ARAC also shows efficacy in another lung tumor model (KLN-205), which does not respond to CTLA-4 and PD-1 inhibitor combination. This study highlights a rational combination strategy to augment existing therapies by utilizing our nanoparticle platform that can load multiple cargo types at once. Only a minority of patients with non-small cell lung cancer (NSCLC) respond to immune checkpoint inhibitors. Here the authors design a nanosystem for the co-delivery of a PLK1 inhibitor and PD-L1 antibody, showing anti-tumor immune responses in preclinical lung cancer models.
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5
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Garofalo C, De Marco C, Cristiani CM. NK Cells in the Tumor Microenvironment as New Potential Players Mediating Chemotherapy Effects in Metastatic Melanoma. Front Oncol 2021; 11:754541. [PMID: 34712615 PMCID: PMC8547654 DOI: 10.3389/fonc.2021.754541] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/27/2021] [Indexed: 12/13/2022] Open
Abstract
Until the last decade, chemotherapy was the standard treatment for metastatic cutaneous melanoma, even with poor results. The introduction of immune checkpoints inhibitors (ICIs) radically changed the outcome, increasing 5-year survival from 5% to 60%. However, there is still a large portion of unresponsive patients that would need further therapies. NK cells are skin-resident innate cytotoxic lymphocytes that recognize and kill virus-infected as well as cancer cells thanks to a balance between inhibitory and activating signals delivered by surface molecules expressed by the target. Since NK cells are equipped with cytotoxic machinery but lack of antigen restriction and needing to be primed, they are nowadays gaining attention as an alternative to T cells to be exploited in immunotherapy. However, their usage suffers of the same limitations reported for T cells, that is the loss of immunogenicity by target cells and the difficulty to penetrate and be activated in the suppressive tumor microenvironment (TME). Several evidence showed that chemotherapy used in metastatic melanoma therapy possess immunomodulatory properties that may restore NK cells functions within TME. Here, we will discuss the capability of such chemotherapeutics to: i) up-regulate melanoma cells susceptibility to NK cell-mediated killing, ii) promote NK cells infiltration within TME, iii) target other immune cell subsets that affect NK cells activities. Alongside traditional systemic melanoma chemotherapy, a new pharmacological strategy based on nanocarriers loaded with chemotherapeutics is developing. The use of nanotechnologies represents a very promising approach to improve drug tolerability and effectiveness thanks to the targeted delivery of the therapeutic molecules. Here, we will also discuss the recent developments in using nanocarriers to deliver anti-cancer drugs within the melanoma microenvironment in order to improve chemotherapeutics effects. Overall, we highlight the possibility to use standard chemotherapeutics, possibly delivered by nanosystems, to enhance NK cells anti-tumor cytotoxicity. Combined with immunotherapies targeting NK cells, this may represent a valuable alternative approach to treat those patients that do not respond to current ICIs.
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Affiliation(s)
- Cinzia Garofalo
- Department of Experimental and Clinical Medicine, "Magna Græcia" University of Catanzaro, Catanzaro, Italy
| | - Carmela De Marco
- Department of Experimental and Clinical Medicine, "Magna Græcia" University of Catanzaro, Catanzaro, Italy
| | - Costanza Maria Cristiani
- Department of Experimental and Clinical Medicine, "Magna Græcia" University of Catanzaro, Catanzaro, Italy
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6
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Iseda N, Itoh S, Yoshizumi T, Tomiyama T, Morinaga A, Yugawa K, Shimokawa M, Shimagaki T, Wang H, Kurihara T, Kitamura Y, Nagao Y, Toshima T, Harada N, Kohashi K, Baba S, Ishigami K, Oda Y, Mori M. Impact of Nuclear Factor Erythroid 2-Related Factor 2 in Hepatocellular Carcinoma: Cancer Metabolism and Immune Status. Hepatol Commun 2021; 6:665-678. [PMID: 34687175 PMCID: PMC8948647 DOI: 10.1002/hep4.1838] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/05/2021] [Accepted: 09/16/2021] [Indexed: 12/16/2022] Open
Abstract
We examined phosphorylated nuclear factor erythroid 2–related factor 2 (P‐NRF2) expression in surgically resected primary hepatocellular carcinoma (HCC) and investigated the association of P‐NRF2 expression with clinicopathological features and patient outcome. We also evaluated the relationship among NRF2, cancer metabolism, and programmed death ligand 1 (PD‐L1) expression. In this retrospective study, immunohistochemical staining of P‐NRF2 was performed on the samples of 335 patients who underwent hepatic resection for HCC. Tomography/computed tomography using fluorine‐18 fluorodeoxyglucose was performed, and HCC cell lines after NRF2 knockdown were analyzed by array. We also analyzed the expression of PD‐L1 after hypoxia inducible factor 1α (HIF1A) knockdown in NRF2‐overexpressing HCC cell lines. Samples from 121 patients (36.1%) were positive for P‐NRF2. Positive P‐NRF2 expression was significantly associated with high alpha‐fetoprotein (AFP) expression, a high rate of poor differentiation, and microscopic intrahepatic metastasis. In addition, positive P‐NRF2 expression was an independent predictor for recurrence‐free survival and overall survival. NRF2 regulated glucose transporter 1, hexokinase 2, pyruvate kinase isoenzymes L/R, and phosphoglycerate kinase 1 expression and was related to the maximum standardized uptake value. PD‐L1 protein expression levels were increased through hypoxia‐inducible factor 1α after NRF2 overexpression in HCC cells. Conclusions: Our large cohort study revealed that P‐NRF2 expression in cancer cells was associated with clinical outcome in HCC. Additionally, we found that NRF2 was located upstream of cancer metabolism and tumor immunity.
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Affiliation(s)
- Norifumi Iseda
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shinji Itoh
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomoharu Yoshizumi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takahiro Tomiyama
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Akinari Morinaga
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kyohei Yugawa
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masahiro Shimokawa
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Molecular Oncology, Tokyo medical and dental university, Tokyo, Japan
| | - Tomonari Shimagaki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Huanlin Wang
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takeshi Kurihara
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshiyuki Kitamura
- Department of Clinical Radiology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Yoshihiro Nagao
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takeo Toshima
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Noboru Harada
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kenichi Kohashi
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shingo Baba
- Department of Clinical Radiology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Kousei Ishigami
- Department of Clinical Radiology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masaki Mori
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Ghebeh H, Al-Sayed A, Eiada R, Cabangon L, Ajarim D, Suleman K, Tulbah A, Al-Tweigeri T. Weekly Paclitaxel given concurrently with Durvalumab has a favorable safety profile in triple-negative metastatic breast cancer. Sci Rep 2021; 11:19154. [PMID: 34580336 PMCID: PMC8476586 DOI: 10.1038/s41598-021-98113-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 09/01/2021] [Indexed: 12/16/2022] Open
Abstract
Therapeutic anti-PD-L1 antibodies are safe as a monotherapy, albeit with minimal efficacy in triple-negative breast cancer (TNBC). This trial aimed to test the safety and efficacy of Durvalumab and Paclitaxel in metastatic TNBC. In this open-label, one-arm trial, five cycles of weekly paclitaxel were delivered intravenously (IV) concurrent with Durvalumab that was given IV every 2 weeks. The combination was preceded by one cycle of paclitaxel alone, for immunological priming, followed by Durvalumab solo until disease progression or unacceptable toxicity. Between 2017 and 2019, 14 patients received at least one cycle of the combination therapy. The therapy was safe with no-dose limiting toxicity, except one case of skin lesions. Adverse events (AEs) were reported in 71% of patients, and there was no death due to the combination therapy. Regardless of grade, the most common AEs were headache and peripheral neuropathy, as each happened in four patients (29%), followed by fatigue and skin rash in three patients (21%) each. Grade 3/4 AEs were experienced by three patients (21%), with the most common being headache and anemia, which happened in two patients (14%). The confirmed objective response rate (ORR) was observed in five patients with a median duration of 10.0 months. Median Progression-free survival (PFS) and overall survival (OS) were 5 and 20.7 months, respectively. The combination of Durvalumab and Paclitaxel is safe, leaving room for additional agents. This is the first report on the combination of Durvalumab and Paclitaxel in the treatment of TNBC (NCT02628132).
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Affiliation(s)
- Hazem Ghebeh
- Research Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia. .,College of Medicine, Al-Faisal University, Riyadh, Saudi Arabia.
| | - Adher Al-Sayed
- Oncology Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Riham Eiada
- Department of Radiology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Leilani Cabangon
- Oncology Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Dahish Ajarim
- Oncology Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Kausar Suleman
- Oncology Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Asma Tulbah
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Taher Al-Tweigeri
- Oncology Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
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8
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Wen Q, Yang Z, Dai H, Feng A, Li Q. Radiomics Study for Predicting the Expression of PD-L1 and Tumor Mutation Burden in Non-Small Cell Lung Cancer Based on CT Images and Clinicopathological Features. Front Oncol 2021; 11:620246. [PMID: 34422625 PMCID: PMC8377473 DOI: 10.3389/fonc.2021.620246] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 07/20/2021] [Indexed: 12/12/2022] Open
Abstract
Background The present study compared the predictive performance of pretreatment computed tomography (CT)-based radiomics signatures and clinicopathological and CT morphological factors for ligand programmed death-ligand 1 (PD-L1) expression level and tumor mutation burden (TMB) status and further explored predictive models in patients with advanced-stage non-small cell lung cancer (NSCLC). Methods A total of 120 patients with advanced-stage NSCLC were enrolled in this retrospective study and randomly assigned to a training dataset or validation dataset. Here, 462 radiomics features were extracted from region-of-interest (ROI) segmentation based on pretreatment CT images. The least absolute shrinkage and selection operator (LASSO) and logistic regression were applied to select radiomics features and develop combined models with clinical and morphological factors for PD-L1 expression and TMB status prediction. Ten-fold cross-validation was used to evaluate the accuracy, and the predictive performance of these models was assessed using receiver operating characteristic (ROC) and area under the curve (AUC) analyses. Results The PD-L1-positive expression level correlated with differentiation degree (p = 0.005), tumor shape (p = 0.006), and vascular convergence (p = 0.007). Stage (p = 0.023), differentiation degree (p = 0.017), and vacuole sign (p = 0.016) were associated with TMB status. Radiomics signatures showed good performance for predicting PD-L1 and TMB with AUCs of 0.730 and 0.759, respectively. Predictive models that combined radiomics signatures with clinical and morphological factors dramatically improved the predictive efficacy for PD-L1 (AUC = 0.839) and TMB (p = 0.818). The results were verified in the validation datasets. Conclusions Quantitative CT-based radiomics features have potential value in the classification of PD-L1 expression levels and TMB status. The combined model further improved the predictive performance and provided sufficient information for the guiding of immunotherapy in clinical practice, and it deserves further analysis.
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Affiliation(s)
- Qiang Wen
- Department of Radiation Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhe Yang
- Department of Radiation Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Honghai Dai
- Department of Radiation Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Alei Feng
- Department of Radiation Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Qiang Li
- Department of Radiation Oncology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
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9
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Del Re M, Vivaldi C, Rofi E, Salani F, Crucitta S, Catanese S, Fontanelli L, Massa V, Cucchiara F, Fornaro L, Capuano A, Fogli S, Vasile E, Danesi R. Gemcitabine Plus Nab-Paclitaxel Induces PD-L1 mRNA Expression in Plasma-Derived Microvesicles in Pancreatic Cancer. Cancers (Basel) 2021; 13:3738. [PMID: 34359638 PMCID: PMC8345069 DOI: 10.3390/cancers13153738] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/04/2021] [Accepted: 07/12/2021] [Indexed: 01/05/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a non-immunogenic tumor poorly responsive to immune checkpoint inhibitors. This study investigates the effect of 5-fluorouracil (5-FU), irinotecan, and oxaliplatin (FOLFIRINOX), and gemcitabine plus nab-paclitaxel (GEMnPAC) regimens on PD-L1 mRNA expression in plasma-derived microvesicles (MVs) in 50 PDAC patients. Plasma was collected before starting chemotherapy and after 3 months of treatment. mRNA was extracted from MVs, and PD-L1 expression was measured by digital droplet PCR. Twenty-eight patients were PD-L1 positive in MVs at baseline, of which 18 were in the GEMnPAC cohort and 10 in the FOLFIRINOX one. The amount of PD-L1 expression in MVs increased from baseline to 3 months of treatment in patients receiving GEMnPAC (median value 0.002 vs. 0.005; p = 0.01) compared to those treated with FOLFIRINOX (median 0.003 vs. 0.004; p = 0.97). The increase in PD-L1 mRNA expression in MVs was not related to tumor response (PR + SD: p = 0.08; PD: p = 0.28). Our findings demonstrate that GEMnPAC can increase PD-L1 mRNA expression in patient-derived circulating MVs, providing a rationale for testing the efficacy of this regimen in sequential or simultaneous combinations with immunotherapy in PDAC patients.
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Affiliation(s)
- Marzia Del Re
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.D.R.); (E.R.); (S.C.); (L.F.); (F.C.); (S.F.)
| | - Caterina Vivaldi
- Department of Translational Research and New Technologies in Medicine, University of Pisa, 56126 Pisa, Italy; (C.V.); (F.S.); (S.C.); (V.M.)
| | - Eleonora Rofi
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.D.R.); (E.R.); (S.C.); (L.F.); (F.C.); (S.F.)
| | - Francesca Salani
- Department of Translational Research and New Technologies in Medicine, University of Pisa, 56126 Pisa, Italy; (C.V.); (F.S.); (S.C.); (V.M.)
| | - Stefania Crucitta
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.D.R.); (E.R.); (S.C.); (L.F.); (F.C.); (S.F.)
| | - Silvia Catanese
- Department of Translational Research and New Technologies in Medicine, University of Pisa, 56126 Pisa, Italy; (C.V.); (F.S.); (S.C.); (V.M.)
| | - Lorenzo Fontanelli
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.D.R.); (E.R.); (S.C.); (L.F.); (F.C.); (S.F.)
| | - Valentina Massa
- Department of Translational Research and New Technologies in Medicine, University of Pisa, 56126 Pisa, Italy; (C.V.); (F.S.); (S.C.); (V.M.)
| | - Federico Cucchiara
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.D.R.); (E.R.); (S.C.); (L.F.); (F.C.); (S.F.)
| | - Lorenzo Fornaro
- Medical Oncology Unit 2, Azienda Ospedaliero-Universitaria Pisana, 56126 Pisa, Italy; (L.F.); (E.V.)
| | - Annalisa Capuano
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 80100 Naples, Italy;
| | - Stefano Fogli
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.D.R.); (E.R.); (S.C.); (L.F.); (F.C.); (S.F.)
| | - Enrico Vasile
- Medical Oncology Unit 2, Azienda Ospedaliero-Universitaria Pisana, 56126 Pisa, Italy; (L.F.); (E.V.)
| | - Romano Danesi
- Unit of Clinical Pharmacology and Pharmacogenetics, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (M.D.R.); (E.R.); (S.C.); (L.F.); (F.C.); (S.F.)
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10
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Roshani Asl E, Rasmi Y, Baradaran B. MicroRNA-124-3p suppresses PD-L1 expression and inhibits tumorigenesis of colorectal cancer cells via modulating STAT3 signaling. J Cell Physiol 2021; 236:7071-7087. [PMID: 33821473 DOI: 10.1002/jcp.30378] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 12/24/2022]
Abstract
Programmed death ligand 1 (PD-L1) plays a significant role in colorectal tumorigenesis through induction of regulatory T cells (Tregs) and suppression of antitumor immunity. Furthermore, microRNAs (miRNAs) as the posttranscriptional regulators of gene expression show considerable promise as a therapeutic target for colorectal cancer (CRC) treatment. Considering this, in vitro effects of miRNA-124 (miR-124-3p) on CRC cell tumorigenesis and Tregs differentiation via targeting PD-L1 were investigated in the current study. Functional analysis showed that miR-124 is significantly downregulated in CRC tissues as compared with marginal normal samples (p < .0001), and its downregulation was negatively correlated with PD-L1 expression. Moreover, a specific region in PD-L1 3'-untranslated region was predicted as the miR-124 target and validated using the luciferase assay. Further investigation showed that transfection of HT29 and SW480 cells with miR-124 mimics significantly reduced PD-L1 mRNA, protein, and cell surface expression, and inhibited Tregs in coculture models via modulating interleukin [IL]-10, IL-2, tumor necrosis factor α, transforming growth factor beta, and interferon gamma expression levels. Besides, miR-124 overexpression decreased CRC cell proliferation and arrested cell cycle at the G1 phase through downregulation of c-Myc and induced apoptosis in CRC cells via upregulation of both intrinsic and extrinsic pathways. Also, miR-124 exogenous overexpression could reduce colony and spheroid formation ability of CRC cells via downregulating CD44 mRNA expression. miR-124 also diminished MMP-9 expression and subsequently suppressed cell migration and invasion. We also illustrated that STAT3 signaling was repressed by miR-124 in CRC cells. Taken together, our findings imply that considering the involvement of miR-124 in the regulation of PD-L1 through colorectal tumorigenesis and its remarkable antitumor effects, this miRNA could be regarded as the promising target for the development of therapeutic approaches for colorectal cancer.
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Affiliation(s)
- Elmira Roshani Asl
- Department of Biochemistry, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Yousef Rasmi
- Department of Biochemistry, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran.,Cellular and Molecular Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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11
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Insights into non-peptide small-molecule inhibitors of the PD-1/PD-L1 interaction: Development and perspective. Bioorg Med Chem 2021; 33:116038. [PMID: 33517226 DOI: 10.1016/j.bmc.2021.116038] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 12/20/2022]
Abstract
The development of immune checkpoint inhibitors has become a research hotspot in cancer immunotherapy in recent years. Anti-PD-1/PD-L1 monoclonal antibodies (mAbs), such as pembrolizumab and nivolumab have been approved for treating different types of cancer. Many peptides, peptidomimetics and non-peptide small-molecule inhibitors targeting the PD-1/PD-L1 axis have been published so far. In comparison with mAbs, small-molecule inhibitors have the potential to overcome inherent shortcomings of mAbs, such as poor oral bioavailability, low tumor penetration, and high manufacturing costs. In this article, we mainly review non-peptide small-molecule inhibitors of the PD-1/PD-L1 interaction, their cocrystal structures, docking studies, and biological activities are also included to guide future study. In addition, we propose several strategies for designing more effective small-molecule modulators of the PD-1/PD-L1 pathway.
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12
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Yamashita K, Iwatsuki M, Yasuda-Yoshihara N, Morinaga T, Nakao Y, Harada K, Eto K, Kurashige J, Hiyoshi Y, Ishimoto T, Nagai Y, Iwagami S, Baba Y, Miyamoto Y, Yoshida N, Ajani JA, Baba H. Trastuzumab upregulates programmed death ligand-1 expression through interaction with NK cells in gastric cancer. Br J Cancer 2020; 124:595-603. [PMID: 33100329 PMCID: PMC7851117 DOI: 10.1038/s41416-020-01138-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 09/22/2020] [Accepted: 10/08/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The predictive significance of programmed death ligand 1 (PD-L1) for programmed death 1 (PD-1) inhibitors remains unclear in gastric cancer (GC) due to the dynamic alteration by treatments. We aimed to elucidate the effects of trastuzumab (Tmab) on PD-L1 expression in GC. METHODS PD-L1 expression was evaluated by multicolour flow cytometry analysis after co-culturing GG cell lines and immune cells with Tmab. IFN-γ in the co-culture experiments was quantified. Immunohistochemistry (IHC) for PD-L1 expression using clinical samples was also performed to confirm PD-L1 alteration by Tmab. RESULTS PD-L1 expression was significantly upregulated by Tmab in HER2-amplified GC cell lines co-cultured with peripheral blood mononuclear cells (PBMCs). PD-L1 upregulation by Tmab was also observed in the GC cells co-cultured with NK cells in time-dependent manner, but not with monocytes. IFN-γ concentration in conditioned media from co-cultured PBMCs and NK cells with Tmab was significantly higher and anti-IFN-γ significantly suppress the Tmab-induced PD-L1 upregulation. IHC also suggested PD-L1 upregulation after Tmab treatment. CONCLUSIONS Tmab can upregulate PD-L1 expression on GC cells through interaction with NK cells. These results suggest clinical implications in the assessment of the predictive significance of PD-L1 expression for PD-1 inhibitors.
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Affiliation(s)
- Kohei Yamashita
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Masaaki Iwatsuki
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.,Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Noriko Yasuda-Yoshihara
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takeshi Morinaga
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yosuke Nakao
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kazuto Harada
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.,Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Kojiro Eto
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Junji Kurashige
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yukiharu Hiyoshi
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takatsugu Ishimoto
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yohei Nagai
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Shiro Iwagami
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yoshifumi Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yuji Miyamoto
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Naoya Yoshida
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Hideo Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
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13
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Wang Y, Sun Q, Mu N, Sun X, Wang Y, Fan S, Su L, Liu X. The deubiquitinase USP22 regulates PD-L1 degradation in human cancer cells. Cell Commun Signal 2020; 18:112. [PMID: 32665011 PMCID: PMC7362500 DOI: 10.1186/s12964-020-00612-y] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 06/17/2020] [Indexed: 12/19/2022] Open
Abstract
Background Many cancers evade immune surveillance by overexpressing PD-L1. PD-L1 interacted with its receptor PD-1, resulting in reduction of T cell proliferation and activation and thereafter cancer cell death mediated by T-lymphocyte. Understanding the mechanisms that regulate PD-L1 was of vital importance for immune checkpoint blockade therapy (ICBT). Methods Human non-small cell lung cancer cells and 293FT cells were used to investigate the function of USP22 upon PD-L1 and CSN5 by WB, Immunoprecipitation, Immunofluorescence and Flow cytometry analysis. B16-F10 cells were used to explore the role of USP22 on tumorigenesis and T cell cytotoxicity. The relationship between USP22 and PD-L1 expression was investigated by Immunohistochemistry analysis in human non-small cell lung cancer samples. Results Our data showed that USP22 interacted with PD-L1 and promoted its stability. USP22 deubiquitinated PD-L1 and inhibited its proteasome degradation. Moreover, USP22 also interacted with CSN5 and stabilized CSN5 through deubiquitination. Either USP22 or CSN5 could facilitate the interaction of PD-L1 with the other one. Furthermore, USP22 removed K6, K11, K27, K29, K33 and K63-linked ubiquitin chain of both CSN5 and PD-L1. In addition, USP22 depletion inhibited tumorigenesis and promoted T cell cytotoxicity. Besides, USP22 expression positively correlated with PD-L1 expression in human non-small cell lung cancer samples. Conclusions Here, we suggested that USP22 is a new regulator for PD-L1. On the one hand, USP22 could directly regulate PD-L1 stability through deubiquitination. On the other hand, USP22 regulated PD-L1 protein level through USP22-CSN5-PD-L1 axis. In addition, USP22 depletion inhibited tumorigenesis and promoted T cell cytotoxicity. Besides, USP22 expression positively correlated with PD-L1 expression in human non-small cell lung cancer samples. Together, we identified a new regulator of PD-L1 and characterized the important role of USP22 in PD-L1 mediated immune evasion. Targeting USP22 might be a new solution to ICBT. Video abstract
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Affiliation(s)
- Yu Wang
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, 72 Binhai Road, Qingdao, 266237, P. R. China
| | - Qingguo Sun
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, 72 Binhai Road, Qingdao, 266237, P. R. China
| | - Ning Mu
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, 72 Binhai Road, Qingdao, 266237, P. R. China
| | - Xiaoyang Sun
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, 72 Binhai Road, Qingdao, 266237, P. R. China
| | - Yingying Wang
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, 72 Binhai Road, Qingdao, 266237, P. R. China.,Shandong Provincial Collaborative Innovation Center of Cell Biology, School of Life Sciences, Shandong Normal University, Jinan, China
| | - Songqing Fan
- Department of Pathology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Ling Su
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, 72 Binhai Road, Qingdao, 266237, P. R. China. .,Shandong Provincial Collaborative Innovation Center of Cell Biology, School of Life Sciences, Shandong Normal University, Jinan, China.
| | - Xiangguo Liu
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, 72 Binhai Road, Qingdao, 266237, P. R. China. .,Shandong Provincial Collaborative Innovation Center of Cell Biology, School of Life Sciences, Shandong Normal University, Jinan, China.
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14
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Lenouvel D, González-Moles MÁ, Ruiz-Ávila I, Chamorro-Santos C, González-Ruiz L, González-Ruiz I, Ramos-García P. Clinicopathological and prognostic significance of PD-L1 in oral cancer: A preliminary retrospective immunohistochemistry study. Oral Dis 2020; 27:173-182. [PMID: 32583572 DOI: 10.1111/odi.13509] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/02/2020] [Accepted: 06/14/2020] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To evaluate the relation between PD-L1 expression in oral cavity squamous cell carcinomas and clinicopathological features as well as survival outcomes. METHODS A retrospective immunohistochemical study was carried out on 55 archived tumours from 55 patients. Tumours were stained for PD-L1 and scored by the proportion of tumour cells with positive membranous staining. PD-L1 scores were compared to the patient's clinicopathological characteristics for any significant associations. Kaplan-Meier curves were constructed for PD-L1 positive and negative tumours to investigate any advantage to survival. RESULTS Positive PD-L1 staining was found in 58% of tumours and was significantly more likely in non-smokers, non-drinkers and in tongue squamous cell carcinomas. Increased PD-L1 was also associated with increased lymphocyte infiltration as well as PD-L1 staining in lymphocytes and the epithelium adjacent to tumour invasion. No survival benefit was seen from PD-L1 expression in tumour cells. CONCLUSIONS PD-L1 expression is more common in non-smokers and non-drinkers, and its presence in the adjacent non-tumour epithelium suggests it may be involved in early oncogenesis.
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Affiliation(s)
| | | | - Isabel Ruiz-Ávila
- Biosanitaria Research Institute, Granada, Spain.,Pathology Service, San Cecilio Hospital Complex, Granada, Spain
| | - Clara Chamorro-Santos
- Biosanitaria Research Institute, Granada, Spain.,Pathology Service, San Cecilio Hospital Complex, Granada, Spain
| | - Lucía González-Ruiz
- Dermatology Service, Ciudad Real General University Hospital, Ciudad Real, Spain
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15
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Zhang M, Fan Y, Che X, Hou K, Zhang C, Li C, Wen T, Wang S, Cheng Y, Liu Y, Qu X. 5-FU-Induced Upregulation of Exosomal PD-L1 Causes Immunosuppression in Advanced Gastric Cancer Patients. Front Oncol 2020; 10:492. [PMID: 32391259 PMCID: PMC7188923 DOI: 10.3389/fonc.2020.00492] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 03/18/2020] [Indexed: 01/22/2023] Open
Abstract
Although the cytotoxic chemotherapeutic agent 5-fluorouracil (5-FU) is generally considered to directly kill cancer cells and exert immunostimulatory effects in advanced gastric cancer, accumulating evidence indicates that it upregulates the expression of PD-L1, a representative immune checkpoint blockade molecule involved in negative regulation of the immune response. It was reported that exosomes could transfer functional PD-L1 locally and distantly to suppress the antitumor immune response. However, whether 5-FU alters the expression of exosomal PD-L1 and induces immunosuppression in gastric cancer remains unclear. Herein, we found that 5-FU increased gastric cancer-derived exosomal PD-L1. Importantly, compared with baseline levels, circulating exosomal PD-L1 was significantly upregulated in 21 stage III–IV gastric cancer patients after two, four, and six repeated cycles of fluoropyrimidine treatment (P = 0.009, P = 0.047, and P = 0.023, respectively), accompanied by decreased amounts of IFN-γ, TNF-α, IL-2, IL-6, and GM-CSF (P = 0.014, P = 0.004, P = 0.009, P = 0.031, and P = 0.014, respectively). Additionally, circulating exosomal PD-L1 was increased more significantly in clinical non-responders compared with responders (P = 0.018). Furthermore, exosomal PD-L1 induced apoptosis in Jurkat T cells and inhibited T cell activation in PBMCs, which could be partly reversed by nivolumab. These results suggested that 5-FU-induced upregulation of exosomal PD-L1 causes systemic immunosuppression in advanced gastric cancer following multiple cycles of chemotherapy, especially after two cycles.
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Affiliation(s)
- Min Zhang
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yibo Fan
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xiaofang Che
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Kezuo Hou
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Chaoxu Zhang
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Ce Li
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Ti Wen
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Shuo Wang
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yu Cheng
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yunpeng Liu
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xiujuan Qu
- Department of Medical Oncology, The First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang, China
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16
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Li T, Hu Z, Wang C, Yang J, Zeng C, Fan R, Guo J. PD-L1-targeted microbubbles loaded with docetaxel produce a synergistic effect for the treatment of lung cancer under ultrasound irradiation. Biomater Sci 2020; 8:1418-1430. [PMID: 31942578 DOI: 10.1039/c9bm01575b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Immunotherapy is gradually becoming as important as traditional therapy in the treatment of cancer, but adverse drug reactions limit patient benefits from PD1/PD-L1 checkpoint inhibitor drugs in the treatment of non-small cell lung cancer (NSCLC). As a chemotherapeutic drug for NSCLC, docetaxel (DTX) can synergize with PD1/PD-L1 checkpoint inhibitors but increase haematoxicity and neurotoxicity. Herein, anti-PD-L1 monoclonal antibody (mAb)-conjugated and docetaxel-loaded multifunctional lipid-shelled microbubbles (PDMs), which were designed with biologically safe phospholipids to produce synergistic antitumour effects, reduced the incidence of side effects and promoted therapeutic effects under ultrasound (US) irradiation. The PDMs were prepared by the acoustic-vibration method and then conjugated with an anti-PD-L1 mAb. The material features of the microbubbles and their cytotoxic effects, cellular apoptosis and cell cycle inhibition were studied. A subcutaneous tumour model was established to test the drug concentration-dependent and antitumour effects of the PDMs combined with US irradiation, and an orthotopic lung tumour model simultaneously confirmed the antitumour effect of this synergistic treatment. The PDMs achieved higher cellular uptake than free DTX, especially when combined with US irradiation. The PDMs combined with US irradiation also induced an increased rate of cellular apoptosis and an elevated G2-M arrest rate in cancer cells, which was positively correlated with PD-L1 expression. An in vivo study showed that synergistic treatment had relatively strong effects on tumour growth inhibition, increased survival time and decreased adverse effect rates. Our study possibly provides a well-controlled design for immunotherapy and chemotherapy and has promising potential for clinical application in NSCLC treatment.
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Affiliation(s)
- Tiankuan Li
- Center of Interventional Radiology and Vascular Surgery, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, China.
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17
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Sheng Q, Zhang Y, Wang Z, Ding J, Song Y, Zhao W. Cisplatin-mediated down-regulation of miR-145 contributes to up-regulation of PD-L1 via the c-Myc transcription factor in cisplatin-resistant ovarian carcinoma cells. Clin Exp Immunol 2019; 200:45-52. [PMID: 31821542 DOI: 10.1111/cei.13406] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2019] [Indexed: 12/19/2022] Open
Abstract
Immune tolerance is one of the leading causes of chemotherapy resistance in carcinoma cases. Studies have shown that programmed cell death ligand-1 (PD-L1), an inhibitory molecule expressed by cancer cells, plays a significant role in immune tolerance through the induction of T cell dysfunction. The results of our RNA sequencing in previous studies revealed that microRNA-145 (miR-145), which is known to be down-regulated by cisplatin in cisplatin-resistant ovarian cancer cells, also represses gene PD-L1 expression. However, the mechanism by which miR-145 contributes to regulate PD-L1 expression in cisplatin resistance of ovarian cancer is yet to be fully understood. Here, we show that cisplatin-mediated miR-145 down-regulation increased PD-L1 expression via targeting the c-Myc transcription factor, thereby inducing T cell apoptosis in vitro. We also report that expression of miR-145 is negatively correlated with PD-L1 expression in human ovarian cancer tissues, malignant grades and the recurrent risks of ovarian cancer after chemotherapy. In summary, our findings suggest that the miR-145/c-Myc/PD-L1 axis contributes to cisplatin resistance in ovarian cancer and support that miR-145 might act as an adjuvant therapeutic target in chemotherapy of ovarian cancer.
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Affiliation(s)
- Q Sheng
- Department of Obstetrics-Gynecology, Department of Orthopedics, 900 Hospital of the Joint Logistics Team/Dongfang Hospital of Xiamen University, Fuzhou, China
| | - Y Zhang
- Department of Obstetrics-Gynecology, Department of Orthopedics, 900 Hospital of the Joint Logistics Team/Dongfang Hospital of Xiamen University, Fuzhou, China
| | - Z Wang
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Cancer Hospital of General Hospital, Basic Medicine College, Ningxia Medical University, Yinchuan, China
| | - J Ding
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Cancer Hospital of General Hospital, Basic Medicine College, Ningxia Medical University, Yinchuan, China
| | - Y Song
- Department of Obstetrics-Gynecology, Department of Orthopedics, 900 Hospital of the Joint Logistics Team/Dongfang Hospital of Xiamen University, Fuzhou, China
| | - W Zhao
- Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Cancer Hospital of General Hospital, Basic Medicine College, Ningxia Medical University, Yinchuan, China
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18
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Ahmad G, Mackenzie GG, Egan J, Amiji MM. DHA-SBT-1214 Taxoid Nanoemulsion and Anti-PD-L1 Antibody Combination Therapy Enhances Antitumor Efficacy in a Syngeneic Pancreatic Adenocarcinoma Model. Mol Cancer Ther 2019; 18:1961-1972. [PMID: 31439714 DOI: 10.1158/1535-7163.mct-18-1046] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/05/2018] [Accepted: 08/13/2019] [Indexed: 01/05/2023]
Abstract
The goal of this study was to evaluate combination of a novel taxoid, DHA-SBT-1214 chemotherapy, in modulating immune checkpoint marker expression and ultimately in improving antibody-based checkpoint blockade therapy in pancreatic adenocarcinoma (PDAC). DHA-SBT-1214 was encapsulated in an oil-in-water nanoemulsion and administered systemically in Panc02 syngeneic PDAC-bearing C57BL/6 mice. Following treatment with DHA-SBT-1214, expression levels of PD-L1 were measured and anti-PD-L1 antibody was administered in combination. The effects of combination therapy on efficacy and the molecular basis of synergistic effects were evaluated. PD-L1 expression was lower on Panc02 pancreatic tumor cells in vitro, which significantly increased after exposure to different chemotherapy drugs. Administration of DHA-SBT-1214, gemcitabine, and PD-L1 antibody alone failed to increase CD8+ T-cell infiltration inside tumors. However, combination of anti-PD-L1 therapy with a novel chemotherapy drug DHA-SBT-1214 in nanoemulsion (NE-DHA-SBT-1214) significantly enhanced CD8+ T-cell infiltration and the therapeutic effects of the anti-PD-L1 antibody. Furthermore, in the Panc02 syngeneic model, the NE-DHA-SBT-1214 combination therapy group reduced tumor growth to a higher extend than paclitaxel, nab-paclitaxel (Abraxane), gemcitabine, or single anti-PD-L1 antibody therapy groups. Our results indicate that NE-DHA-SBT-1214 stimulated immunogenic potential of PDAC and provided an enhanced therapeutic effect with immune checkpoint blockade therapy, which warrants further evaluation.
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Affiliation(s)
- Gulzar Ahmad
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, Massachusetts
| | - Gerardo G Mackenzie
- Department of Nutrition, University of California at Davis, Davis, California
| | | | - Mansoor M Amiji
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, Massachusetts.
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19
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Shen X, Zhang L, Li J, Li Y, Wang Y, Xu ZX. Recent Findings in the Regulation of Programmed Death Ligand 1 Expression. Front Immunol 2019; 10:1337. [PMID: 31258527 PMCID: PMC6587331 DOI: 10.3389/fimmu.2019.01337] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 05/28/2019] [Indexed: 12/11/2022] Open
Abstract
With the recent approvals for the application of monoclonal antibodies that target the well-characterized immune checkpoints, immune therapy shows great potential against both solid and hematologic tumors. The use of these therapeutic monoclonal antibodies elicits inspiring clinical results with durable objective responses and improvements in overall survival. Agents targeting programmed cell death protein 1 (PD-1; also known as PDCD1) and its ligand (PD-L1) achieve a great success in immune checkpoints therapy. However, the majority of patients fail to respond to PD-1/PD-L1 axis inhibitors. Expression of PD-L1 on the membrane of tumor and immune cells has been shown to be associated with enhanced objective response rates to PD-1/PD-L1 inhibition. Thus, an improved understanding of how PD-L1 expression is regulated will enable us to better define its role as a predictive marker. In this review, we summarize recent findings in the regulation of PD-L1 expression.
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Affiliation(s)
- Xiangfeng Shen
- Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, China
| | - Lihong Zhang
- Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, China
| | - Jicheng Li
- Department of Physiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Yulin Li
- Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, China
| | - Yishu Wang
- Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, China
| | - Zhi-Xiang Xu
- Key Laboratory of Pathobiology, Ministry of Education, Norman Bethune College of Medicine, Jilin University, Changchun, China
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Tao Z, Ruan H, Sun L, Kuang D, Song Y, Wang Q, Wang T, Hao Y, Chen K. Targeting the YB-1/PD-L1 Axis to Enhance Chemotherapy and Antitumor Immunity. Cancer Immunol Res 2019; 7:1135-1147. [PMID: 31113805 DOI: 10.1158/2326-6066.cir-18-0648] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 02/07/2019] [Accepted: 05/15/2019] [Indexed: 11/16/2022]
MESH Headings
- Animals
- Antineoplastic Agents/pharmacology
- Apoptosis
- B7-H1 Antigen/antagonists & inhibitors
- B7-H1 Antigen/immunology
- Biomarkers, Tumor/metabolism
- CD8-Positive T-Lymphocytes/drug effects
- CD8-Positive T-Lymphocytes/immunology
- Carcinoma, Hepatocellular/drug therapy
- Carcinoma, Hepatocellular/immunology
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/pathology
- Cell Proliferation
- Drug Resistance, Multiple
- Drug Resistance, Neoplasm/drug effects
- Drug Resistance, Neoplasm/immunology
- Gene Expression Regulation, Neoplastic
- Humans
- Liver Neoplasms/drug therapy
- Liver Neoplasms/immunology
- Liver Neoplasms/metabolism
- Liver Neoplasms/pathology
- Mice
- Mice, Inbred C57BL
- Mice, Nude
- Prognosis
- Signal Transduction
- Survival Rate
- Tumor Cells, Cultured
- Tumor Escape/drug effects
- Tumor Escape/immunology
- Tumor Microenvironment/drug effects
- Tumor Microenvironment/immunology
- Xenograft Model Antitumor Assays
- Y-Box-Binding Protein 1/antagonists & inhibitors
- Y-Box-Binding Protein 1/immunology
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Affiliation(s)
- Zhen Tao
- Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin, China
| | - Hailong Ruan
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lin Sun
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin, China
| | - Dong Kuang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yongchun Song
- Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin, China
| | - Qi Wang
- Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin, China
| | - Tao Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yi Hao
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ke Chen
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
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21
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Lenouvel D, González-Moles MÁ, Talbaoui A, Ramos-García P, González-Ruiz L, Ruiz-Ávila I, Gil-Montoya JA. An update of knowledge on PD-L1 in head and neck cancers: Physiologic, prognostic and therapeutic perspectives. Oral Dis 2019; 26:511-526. [PMID: 30866171 DOI: 10.1111/odi.13088] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 01/09/2019] [Accepted: 03/07/2019] [Indexed: 12/24/2022]
Abstract
Programmed cell death-ligand 1 (PD-L1) is a transmembrane protein that acts as a co-inhibitory factor in the immune response. Its receptor, programmed cell death protein 1 (PD-1), is found on immune cells, where binding to PD-L1 can reduce the proliferation of PD-1-positive cells, inhibit their cytokine secretion and induce apoptosis. PD-L1 in immune-privileged tissue plays a crucial role in peripheral tolerance. PD-L1 can be overexpressed in various malignancies, including oral squamous cell carcinoma, where it can attenuate the host immune response to tumour cells and has been associated with a worse prognosis. Monoclonal antibody therapies targeting the PD-1:PD-L1 axis have shown initial promise, but further research is needed to identify which patients will benefit. We provide an update of knowledge on PD-L1, including its structure, function and regulation. We also review studies on the overexpression of PD-L1 in cancer, specifically oral squamous cell carcinoma, and explore its potential value as a therapeutic target.
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Affiliation(s)
| | - Miguel Ángel González-Moles
- School of Dentistry, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria, Granada, Spain
| | - Asmae Talbaoui
- School of Dentistry, University of Granada, Granada, Spain
| | | | - Lucía González-Ruiz
- Servicio de Dermatología, Hospital General Universitario de Ciudad Real, Ciudad Real, Spain
| | - Isabel Ruiz-Ávila
- Instituto de Investigación Biosanitaria, Granada, Spain.,Servicio de Anatomía Patológica, Complejo Hospitalario Universitario de Granada, Granada, Spain
| | - José Antonio Gil-Montoya
- School of Dentistry, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria, Granada, Spain
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22
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Xu Z, Zhang Y, Zhang S, Jia X, Zhong G, Yang Y, Du Q, Li J, Liu Z. Novel half-sandwich iridium OˆC (carbene)-Complexes: In vitro and in vivo tumor growth suppression and pro-apoptosis via ROS-mediated cross-talk between mitochondria and lysosomes. Cancer Lett 2019; 447:75-85. [DOI: 10.1016/j.canlet.2019.01.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 01/08/2019] [Accepted: 01/17/2019] [Indexed: 12/20/2022]
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23
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Xu S, Cui F, Huang D, Zhang D, Zhu A, Sun X, Cao Y, Ding S, Wang Y, Gao E, Zhang F. PD-L1 monoclonal antibody-conjugated nanoparticles enhance drug delivery level and chemotherapy efficacy in gastric cancer cells. Int J Nanomedicine 2018; 14:17-32. [PMID: 30587982 PMCID: PMC6302817 DOI: 10.2147/ijn.s175340] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background Docetaxel (DOC) is widely used as a chemotherapy drug for various tumors, including gastric cancer (GC), but the clinical application of DOC has been limited due to the hydrophobicity of the drug. We aimed to formulate a multifunctional nanoparticle (NP) system to reduce the side effects of the chemotherapy agent, to promote synergistic therapeutic effects, and to achieve targeted delivery of the therapy. Methods The polyethylene glycol-poly(ε-caprolactone) NPs (PEG-PCL NPs) were prepared by a ring opening copolymerization technique and were then conjugated with a programmed death-ligand 1 (PD-L1) monoclonal antibody (mAb). The effects of the surface coating on particle size, size distribution, zeta potential, drug encapsulation efficiency, loading capacity, and the drug release kinetics were investigated. By using a panel of PD-L1-expressing human GC cell lines and PD-L1-overexpressing cells, we studied cellular uptake, cytotoxic effects, and cellular apoptosis in the presence of PD-L1 mAb-conjugated NPs. Results The characterization of the structure and biological functions of DOC-PEG-PCL-mAb NPs was investigated in vitro. X-ray photoelectron spectroscopy validated the presence of the PD-L1 mAbs on the NP surface. The cellular uptake analysis showed that the antibody-conjugated NPs achieved significantly higher cellular uptake. The results of an in vitro cytotoxicity experiment on three GC lines further proved the targeting effects of the antibody conjugation. In addition, we found that the DOC-PEG-PCL-mAb NPs induced cell apoptosis and enhanced G2-M arrest in cancer cells, indicating the inhibition of microtubule synthesis. When compared with the control groups, DOC-PEG-PCL-mAb NPs are more effective in inhibiting PD-L1 expression in GC cells. Conclusion Our results reported here highlight the biological and clinical potential of DOC-PEG-PCL-mAb NPs using PD-L1 mAbs in GC treatment.
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Affiliation(s)
- Shijie Xu
- Center for Public Health Research, Medical School, Nanjing University, Nanjing, China
| | - Fangbo Cui
- Department of Oncology, Wannan Medical College, Wuhu, Anhui, China, .,Department of Oncology, The People's Hospital of Ma Anshan, Ma Anshan, Anhui, China,
| | - Dafu Huang
- Department of Oncology, Nanjing Lishui People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, Jiangsu, China
| | - Dinghu Zhang
- Department of Oncology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Anqing Zhu
- Department of Oncology, The Affliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, Jiangsu, China
| | - Xia Sun
- Department of Oncology, The Affliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, Jiangsu, China
| | - Yiming Cao
- Department of General Surgery, The People's Hospital of Ma Anshan, Ma Anshan, Anhui, China
| | - Sheng Ding
- Department of General Surgery, The People's Hospital of Ma Anshan, Ma Anshan, Anhui, China
| | - Yao Wang
- Department of General Surgery, The People's Hospital of Ma Anshan, Ma Anshan, Anhui, China
| | - Eryun Gao
- Department of Oncology, The People's Hospital of Ma Anshan, Ma Anshan, Anhui, China,
| | - Fenglin Zhang
- Department of Oncology, The People's Hospital of Ma Anshan, Ma Anshan, Anhui, China,
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24
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Ng HY, Li J, Tao L, Lam AKY, Chan KW, Ko JMY, Yu VZ, Wong M, Li B, Lung ML. Chemotherapeutic Treatments Increase PD-L1 Expression in Esophageal Squamous Cell Carcinoma through EGFR/ERK Activation. Transl Oncol 2018; 11:1323-1333. [PMID: 30172884 PMCID: PMC6122398 DOI: 10.1016/j.tranon.2018.08.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 08/10/2018] [Accepted: 08/14/2018] [Indexed: 12/14/2022] Open
Abstract
The current study reveals the clinicopathological association of PD-L1 in Hong Kong esophageal squamous cell carcinoma (ESCC) patients and the differential regulation of PD-L1 by standard first-line chemotherapy in ESCC. Immunohistochemical analysis of tissue microarray data from 84 Hong Kong ESCC patients shows that PD-L1 was expressed in 21% of the tumors. Positive PD-L1 staining was significantly associated with later disease stage (stages III and IV) (P value = .0379) and lymph node metastasis (P value = .0466) in the Hong Kong cohort. Furthermore, PD-L1 expression was significantly induced in ESCC cell lines after standard chemotherapy treatments, along with EGFR and ERK activation in both in vitro studies and the in vivo esophageal orthotopic model. The endogenous expression of PD-L1 was reduced by treatment with an EGFR inhibitor (erlotinib) or by the knockdown of EGFR. Moreover, the upregulation of PD-L1 by chemotherapy was also attenuated by the treatment with erlotinib and a MAPK/MEK inhibitor (AZD6244), suggesting that PD-L1 is regulated by the EGFR/ERK pathway in ESCC. The regulation of PD-L1 by the EGFR pathway was further supported by the correlation of PD-L1 and EGFR expression observed in the commercially available tissue microarray set (P value = .028). Taken together, the current study was the first to demonstrate the upregulation of PD-L1 by chemotherapy in ESCC and its regulation through the EGFR/ERK pathway. The results suggest the potential usefulness of combined conventional chemotherapy together with anti-PD-L1 immunotherapy to achieve better treatment outcome.
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Affiliation(s)
- Hoi Yan Ng
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong SAR
| | - Jian Li
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong SAR
| | - Lihua Tao
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong SAR
| | - Alfred King-Yin Lam
- Cancer Molecular Pathology, Griffith Medical School, Griffith University, Gold Coast, QLD 4222, Australia
| | - Kwok Wah Chan
- Department of Pathology, University of Hong Kong, Hong Kong, Hong Kong SAR
| | | | - Valen Zhuoyou Yu
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong SAR
| | - Michael Wong
- Lee's Pharmaceutical (Hong Kong) Limited, Hong Kong SAR
| | - Benjamin Li
- Lee's Pharmaceutical (Hong Kong) Limited, Hong Kong SAR
| | - Maria Li Lung
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong SAR.
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25
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Chen T, Li Q, Liu Z, Chen Y, Feng F, Sun H. Peptide-based and small synthetic molecule inhibitors on PD-1/PD-L1 pathway: A new choice for immunotherapy? Eur J Med Chem 2018; 161:378-398. [PMID: 30384043 DOI: 10.1016/j.ejmech.2018.10.044] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 10/17/2018] [Accepted: 10/18/2018] [Indexed: 12/31/2022]
Abstract
Blockade the interaction of the programmed cell death protein 1 (PD-1) and its ligand, programmed death-ligand 1 (PD-L1) can prevent immune evasion of tumor cells and significantly prolong the survival of cancer patients. Currently marketed drugs targeting PD-1/PD-L1 pathway are all monoclonal antibodies (mAbs) that have achieved great success in clinical trials. With the constantly emerging problems of antibody drugs, small molecule inhibitors have attracted the attention of pharmaceutical chemists due to their controllable pharmacological and pharmacokinetic properties, which make them potential alternatives or supplements to mAbs to regulate PD-1/PD-L1 pathway. However, the insufficient target structure information hinders the development of small molecule inhibitors. Since the publication of human-PD-1/human-PD-L1 (hPD-1/hPD-L1) crystal structure, more and more cocrystal structures of mAbs, cyclopeptides and small molecules with PD-1 and PD-L1 have been resolved. These complexes provide a valuable starting point for the rational design of peptide-based and small synthetic molecule inhibitors. Here we reviewed the non-antibody inhibitors that have been published so far and analyzed their structure-activity relationships (SAR). We also summarized the cocrystal structures with hot spots identified, with the aim to provide reference for future drug discovery.
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Affiliation(s)
- Tingkai Chen
- Key Laboratory of Biomedical Functional Materials, School of Science, China Pharmaceutical University, Nanjing, 211198, China
| | - Qi Li
- Key Laboratory of Biomedical Functional Materials, School of Science, China Pharmaceutical University, Nanjing, 211198, China
| | - Zongliang Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, 264005, PR China
| | - Yao Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Feng Feng
- Key Laboratory of Biomedical Functional Materials, School of Science, China Pharmaceutical University, Nanjing, 211198, China.
| | - Haopeng Sun
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China.
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26
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Dermani FK, Samadi P, Rahmani G, Kohlan AK, Najafi R. PD-1/PD-L1 immune checkpoint: Potential target for cancer therapy. J Cell Physiol 2018; 234:1313-1325. [PMID: 30191996 DOI: 10.1002/jcp.27172] [Citation(s) in RCA: 266] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 07/16/2018] [Indexed: 12/16/2022]
Abstract
Recent studies show that cancer cells are sometimes able to evade the host immunity in the tumor microenvironment. Cancer cells can express high levels of immune inhibitory signaling proteins. One of the most critical checkpoint pathways in this system is a tumor-induced immune suppression (immune checkpoint) mediated by the programmed cell death protein 1 (PD-1) and its ligand, programmed death ligand 1 (PD-L1). PD-1 is highly expressed by activated T cells, B cells, dendritic cells, and natural killer cells, whereas PD-L1 is expressed on several types of tumor cells. Many studies have shown that blocking the interaction between PD-1 and PD-L1 enhances the T-cell response and mediates antitumor activity. In this review, we highlight a brief overview of the molecular and biochemical events that are regulated by the PD-1 and PD-L1 interaction in various cancers.
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Affiliation(s)
- Fatemeh K Dermani
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Pouria Samadi
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Golebagh Rahmani
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Alisa K Kohlan
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Rezvan Najafi
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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Zerdes I, Matikas A, Bergh J, Rassidakis GZ, Foukakis T. Genetic, transcriptional and post-translational regulation of the programmed death protein ligand 1 in cancer: biology and clinical correlations. Oncogene 2018; 37:4639-4661. [PMID: 29765155 PMCID: PMC6107481 DOI: 10.1038/s41388-018-0303-3] [Citation(s) in RCA: 198] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/27/2018] [Accepted: 04/13/2018] [Indexed: 02/06/2023]
Abstract
The programmed death protein 1 (PD-1) and its ligand (PD-L1) represent a well-characterized immune checkpoint in cancer, effectively targeted by monoclonal antibodies that are approved for routine clinical use. The regulation of PD-L1 expression is complex, varies between different tumor types and occurs at the genetic, transcriptional and post-transcriptional levels. Copy number alterations of PD-L1 locus have been reported with varying frequency in several tumor types. At the transcriptional level, a number of transcriptional factors seem to regulate PD-L1 expression including HIF-1, STAT3, NF-κΒ, and AP-1. Activation of common oncogenic pathways such as JAK/STAT, RAS/ERK, or PI3K/AKT/MTOR, as well as treatment with cytotoxic agents have also been shown to affect tumoral PD-L1 expression. Correlative studies of clinical trials with PD-1/PD-L1 inhibitors have so far shown markedly discordant results regarding the value of PD-L1 expression as a marker of response to treatment. As the indications for immune checkpoint inhibition broaden, understanding the regulation of PD-L1 in cancer will be of utmost importance for defining its role as predictive marker but also for optimizing strategies for cancer immunotherapy. Here, we review the current knowledge of PD-L1 regulation, and its use as biomarker and as therapeutic target in cancer.
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Affiliation(s)
- Ioannis Zerdes
- Department of Oncology-Pathology, Cancer Centrum Karolinska, Karolinska Institutet, Stockholm, Sweden
| | - Alexios Matikas
- Department of Oncology-Pathology, Cancer Centrum Karolinska, Karolinska Institutet, Stockholm, Sweden
- Department of Oncology, Radiumhemmet, Karolinska University Hospital, Stockholm, Sweden
| | - Jonas Bergh
- Department of Oncology-Pathology, Cancer Centrum Karolinska, Karolinska Institutet, Stockholm, Sweden
- Department of Oncology, Radiumhemmet, Karolinska University Hospital, Stockholm, Sweden
| | - George Z Rassidakis
- Department of Oncology-Pathology, Cancer Centrum Karolinska, Karolinska Institutet, Stockholm, Sweden
- Department of Pathology and Cytology, Karolinska University Hospital, Stockholm, Sweden
| | - Theodoros Foukakis
- Department of Oncology-Pathology, Cancer Centrum Karolinska, Karolinska Institutet, Stockholm, Sweden.
- Department of Oncology, Radiumhemmet, Karolinska University Hospital, Stockholm, Sweden.
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28
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Parra ER, Villalobos P, Behrens C, Jiang M, Pataer A, Swisher SG, William WN, Zhang J, Lee J, Cascone T, Heymach JV, Forget MA, Haymaker C, Bernatchez C, Kalhor N, Weissferdt A, Moran C, Zhang J, Vaporciyan A, Gibbons DL, Sepesi B, Wistuba II. Effect of neoadjuvant chemotherapy on the immune microenvironment in non-small cell lung carcinomas as determined by multiplex immunofluorescence and image analysis approaches. J Immunother Cancer 2018; 6:48. [PMID: 29871672 PMCID: PMC5989476 DOI: 10.1186/s40425-018-0368-0] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 05/25/2018] [Indexed: 01/12/2023] Open
Abstract
Background The clinical efficacy observed with inhibitors of programed cell death 1/programed cell death ligand 1 (PD-L1/PD-1) in cancer therapy has prompted studies to characterize the immune response in several tumor types, including lung cancer. However, the immunological profile of non–small cell lung carcinoma (NSCLC) treated with neoadjuvant chemotherapy (NCT) is not yet fully characterized, and it may be therapeutically important. The aim of this retrospective study was to characterize and quantify PD-L1/PD-1 expression and tumor-associated immune cells (TAICs) in surgically resected NSCLCs from patients who received NCT or did not receive NCT (non-NCT). Methods We analyzed immune markers in formalin-fixed, paraffin-embedded tumor tissues resected from 112 patients with stage II/III NSCLC, including 61 non-NCT (adenocarcinoma [ADC] = 33; squamous cell carcinoma [SCC] = 28) and 51 NCT (ADC = 31; SCC = 20). We used multiplex immunofluorescence to identify and quantify immune markers grouped into two 6-antibody panels: panel 1 included AE1/AE3, PD-L1, CD3, CD4, CD8, and CD68; panel 2 included AE1/AE3, PD1, granzyme B, FOXP3, CD45RO, and CD57. Results PD-L1 expression was higher (> overall median) in NCT cases (median, 19.53%) than in non-NCT cases (median, 1.55%; P = 0.022). Overall, density of TAICs was higher in NCT-NSCLCs than in non-NCT-NSCLCs. Densities of CD3+ cells in the tumor epithelial compartment were higher in NCT-ADCs and NCT-SCCs than in non-NCT-ADCs and non-NCT-SCCs (P = 0.043). Compared with non-NCT-SCCs, NCT-SCCs showed significantly higher densities of CD3 + CD4+ (P = 0.019) and PD-1+ (P < 0.001) cells in the tumor epithelial compartment. Density of CD68+ tumor-associated macrophages (TAMs) was higher in NCT-NSCLCs than in non-NCT-NSCLCs and was significantly higher in NCT-SCCs than in non-NCT-SCCs. In NCT-NSCLCs, higher levels of epithelial T lymphocytes (CD3 + CD4+) and epithelial and stromal TAMs (CD68+) were associated with better outcome in univariate and multivariate analyses. Conclusions NCT-NSCLCs exhibited higher levels of PD-L1 expression and T-cell subset regulation than non-NCT-NSCLCs, suggesting that NCT activates specific immune response mechanisms in lung cancer. These results suggest the need for clinical trials and translational studies of combined chemotherapy and immunotherapy prior to surgical resection of locally advanced NSCLC. Electronic supplementary material The online version of this article (10.1186/s40425-018-0368-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Edwin R Parra
- Department of Translational Molecular Pathology, Unit 951, The University of Texas MD Anderson Cancer Center, 2130 West Holcombe Blvd, Houston, TX, 77030, USA.
| | - Pamela Villalobos
- Department of Translational Molecular Pathology, Unit 951, The University of Texas MD Anderson Cancer Center, 2130 West Holcombe Blvd, Houston, TX, 77030, USA
| | - Carmen Behrens
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Mei Jiang
- Department of Translational Molecular Pathology, Unit 951, The University of Texas MD Anderson Cancer Center, 2130 West Holcombe Blvd, Houston, TX, 77030, USA
| | - Apar Pataer
- Department of Thoracic and Cardiovascular Surgery, Unit 1489, The University of Texas MD Anderson Cancer Center, 1400 Pressler St. Houston, Houston,, TX, 77030, USA
| | - Stephen G Swisher
- Department of Thoracic and Cardiovascular Surgery, Unit 1489, The University of Texas MD Anderson Cancer Center, 1400 Pressler St. Houston, Houston,, TX, 77030, USA
| | - William N William
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jiexin Zhang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jack Lee
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Tina Cascone
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - John V Heymach
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Marie-Andrée Forget
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Cara Haymaker
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Chantale Bernatchez
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Neda Kalhor
- Department of Anatomical Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Annikka Weissferdt
- Department of Anatomical Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Cesar Moran
- Department of Anatomical Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jianjun Zhang
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ara Vaporciyan
- Department of Thoracic and Cardiovascular Surgery, Unit 1489, The University of Texas MD Anderson Cancer Center, 1400 Pressler St. Houston, Houston,, TX, 77030, USA
| | - Don L Gibbons
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Boris Sepesi
- Department of Thoracic and Cardiovascular Surgery, Unit 1489, The University of Texas MD Anderson Cancer Center, 1400 Pressler St. Houston, Houston,, TX, 77030, USA.
| | - Ignacio I Wistuba
- Department of Translational Molecular Pathology, Unit 951, The University of Texas MD Anderson Cancer Center, 2130 West Holcombe Blvd, Houston, TX, 77030, USA. .,Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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29
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Qian CJ, Qi YX, Zhong S, Zeng JP, Chen XY, Yao J. Mitogen-activated protein kinase inhibition enhances the antitumor effects of sporamin in human pancreatic cancer cells. Oncol Lett 2018; 16:1237-1242. [PMID: 30061945 DOI: 10.3892/ol.2018.8746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 01/17/2018] [Indexed: 01/07/2023] Open
Abstract
Sporamin, a sweet potato tuber storage protein, is a Kunitz-type trypsin inhibitor (TI) that has exhibited antitumor activity through poorly defined mechanisms in a number of types of tumor cells. The present study aimed to analyze the combined effects of sporamin and three mitogen-activated protein kinase (MAPK) inhibitors, PD98059, SP600125 and SB203580, on the pancreatic cancer cell line, PANC-1. Cell proliferation activity was assessed using a 3H-thymidine incorporation assay, and cell viability was analyzed using an MTT assay. Apoptosis was assayed by flow cytometry and fluorescence microscopy. Protein expression levels in PANC-1 cells were determined by western blotting. The results of this analysis demonstrated that sporamin induced a temporary increase in the phosphorylation of MAPKs, including phosphorylated extracellular signal regulated-kinase 1/2, phosphorylated c-Jun amino-terminal protein kinase 1/2 and phosphorylated p38-MAPK, in a concentration-dependent manner. However, treatment with MAPK inhibitors promoted the inhibition of cell proliferation and viability, and the induction of apoptosis in sporamin-treated PANC-1 cells. In conclusion, the present study demonstrated that MAPK inhibition enhanced the antitumor activity of sporamin in PANC-1 cells.
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Affiliation(s)
- Cui-Juan Qian
- Department of Gastroenterology, Taizhou Central Hospital, Taizhou University Hospital, Taizhou, Zhejiang 318000, P.R. China.,Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
| | - Yong-Xiao Qi
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
| | - Sheng Zhong
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
| | - Ju-Ping Zeng
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
| | - Xiao-Ying Chen
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
| | - Jun Yao
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
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30
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Sustained ERK activation-mediated proliferation inhibition of farrerol on human gastric carcinoma cell line by G0/G1-phase cell-cycle arrest. Eur J Cancer Prev 2018; 25:490-9. [PMID: 26656929 DOI: 10.1097/cej.0000000000000212] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Current cancer treatment is partly limited by chemotherapy-induced vascular toxicity associated with damage to vascular endothelial cells. In this study, the cytotoxicity of farrerol against SGC7901 gastric cancer cells and human umbilical vein endothelial cells (HUVECs) in vitro was investigated along with the underlying mechanisms of its growth-inhibitory effect against SGC7901 cells. MTT assays showed that farrerol inhibited SGC7901 cell growth, but exerted no cytotoxicity against HUVECs. Flow cytometry showed that treatment of SGC7901 cells with farrerol (5, 40, or 160 μmol/l) for 24 h caused G0/G1 cell cycle arrest in a concentration-dependent manner. Western blotting indicated that exposure of SGC7901 cells to farrerol resulted in significant upregulation of p27KIP1 (p27), accompanied by sustained activation of ERK1/2 and p38 MAPK instead of JNK. Farrerol-stimulated p27 expression, p38 MAPK activation, and cell growth inhibition were attenuated by pretreatment with U0126, an MEK1/2 inhibitor. In conclusion, this study indicates the selective cytotoxicity of farrerol against SGC7901 cells, but not HUVECs. Furthermore, it provides the first evidence that farrerol could induce cancer cell growth inhibition by G0/G1-phase cell-cycle arrest mediated by sustained ERK activation. The findings show the potential of farrerol as a chemotherapeutic agent without vascular toxicity for use against gastric cancer.
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31
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Kwon MJ, Kim KC, Nam ES, Cho SJ, Park HR, Min SK, Seo J, Choe JY, Lee HK, Kang HS, Min KW. Programmed death ligand-1 and MET co-expression is a poor prognostic factor in gastric cancers after resection. Oncotarget 2017; 8:82399-82414. [PMID: 29137273 PMCID: PMC5669899 DOI: 10.18632/oncotarget.19390] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 06/29/2017] [Indexed: 12/29/2022] Open
Abstract
Programmed death-ligand 1 (PD-L1) plays an essential protein for immune evasion, contributing to tumor development and progression. Recent studies have reported MET as an upregulator for PD-L1 overexpression through an oncogenic pathway. However, an association between PD-L1 expression with MET has not been reported in gastric cancer.The prognostic significance of PD-L1 and its association with Epstein-Barr virus (EBV), microsatellite instability (MSI), and mucin phenotype remain controversial. We performed in situ hybridization for EBV-encoded RNA and immunohistochemistry in tissue microarrays for 394 gastric cancers. A multiplex polymerase chain reaction with five quasimonomorphic markers was performed for MSI. PD-L1 expression was observed in 123 cases (31.2%), and clinicopathological features such as MET overexpression, high pT stage, and a lack of lymphatic invasion represent significant risk factors associated with PD-L1 overexpression in gastric cancers. No associations of EBV, MSI, or mucin phenotype with PD-L1 expression were statistically significant. PD-L1 expression was a strong indicator for worse overall survival (OS) but borderline significant in disease-free survival (DFS). A combined analysis of PD-L1 and MET expression indicated that the PD-L1+/MET+ subgroup showed the worst prognosis when compared to the PD-L1-/MET- subgroup, which had the best clinical outcome. Furthermore, PD-L1 overexpression exhibited poor prognosis in terms of both OS and DFS in EBV-negative, microsatellite stable, and intestinal mucin phenotype tumors. In conclusion, this is the first study to evaluate the overexpression of MET as a risk factor for PD-L1 positivity in gastric cancer tissue as well as the reliability and prognostic relevance of PD-L1/MET co-expression after surgery.
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Affiliation(s)
- Mi Jung Kwon
- Department of Pathology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do 431-796, Republic of Korea
| | - Kab-Choong Kim
- Department of Surgery, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do 431-796, Republic of Korea
| | - Eun Sook Nam
- Department of Pathology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul 134-701, Republic of Korea
| | - Seong Jin Cho
- Department of Pathology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul 134-701, Republic of Korea
| | - Hye-Rim Park
- Department of Pathology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do 431-796, Republic of Korea
| | - Soo Kee Min
- Department of Pathology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do 431-796, Republic of Korea
| | - Jinwon Seo
- Department of Pathology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do 431-796, Republic of Korea
| | - Ji-Young Choe
- Department of Pathology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do 431-796, Republic of Korea
| | - Hye Kyung Lee
- Department of Pathology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do 431-796, Republic of Korea
| | - Ho Suk Kang
- Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Gyeonggi-do 431-796, Republic of Korea
| | - Kyueng-Whan Min
- Department of Pathology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Gyeonggi-do 11923, Republic of Korea
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32
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Wangpaichitr M, Kandemir H, Li YY, Wu C, Nguyen DJM, Feun LG, Kuo MT, Savaraj N. Relationship of Metabolic Alterations and PD-L1 Expression in Cisplatin Resistant Lung Cancer. CELL & DEVELOPMENTAL BIOLOGY 2017; 6:183. [PMID: 28819582 PMCID: PMC5557290 DOI: 10.4172/2168-9296.1000183] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Despite numerous reports on immune checkpoint inhibitor for the treatment of non-small cell lung cancer (NSCLC), the response rate remains low but durable. Thus cisplatin still plays a major role in the treatment of NSCLC. While there are many mechanisms involved in cisplatin resistance, alteration in metabolic phenotypes with elevated levels of reactive oxygen species (ROS) are found in several cisplatin resistant tumors. These resistant cells become more reliant on mitochondria oxidative metabolism instead of glucose. Consequently, high ROS and metabolic alteration contributed to epithelial-mesenchymal transition (EMT). Importantly, recent findings indicated that EMT has a crucial role in upregulating PD-L1 expression in cancer cells. Thus, it is very likely that cisplatin resistance will lead to high expression of PD-L1/PD-1 which makes them vulnerable to anti PD-1 or anti PD-L1 antibody treatment. An understanding of the interactions between cancer cells metabolic reprogramming and immune checkpoints is critical for combining metabolism targeted therapies with immunotherapies.
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Affiliation(s)
- M Wangpaichitr
- Miami VA Healthcare System, Research Service, Miami, Florida, USA
- Department of Surgery, Cardiothoracic Surgery, University of Miami, Miami, Florida, USA
| | - H Kandemir
- School of Medicine, Koc University, Istanbul, Turkey
| | - YY Li
- Department of Medicine, Hematology/Oncology, University of Miami, Miami, Florida, USA
| | - C Wu
- Miami VA Healthcare System, Research Service, Miami, Florida, USA
| | - DJM Nguyen
- Department of Microbiology, University of Miami, Miami, Florida, USA
| | - LG Feun
- Department of Medicine, Hematology/Oncology, University of Miami, Miami, Florida, USA
| | - MT Kuo
- Department of Translational Molecular Pathology, Texas MD Anderson, Houston, Texas, USA
| | - N Savaraj
- Miami VA Healthcare System, Research Service, Miami, Florida, USA
- Department of Medicine, Hematology/Oncology, University of Miami, Miami, Florida, USA
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33
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Doi T, Ishikawa T, Okayama T, Oka K, Mizushima K, Yasuda T, Sakamoto N, Katada K, Kamada K, Uchiyama K, Handa O, Takagi T, Naito Y, Itoh Y. The JAK/STAT pathway is involved in the upregulation of PD-L1 expression in pancreatic cancer cell lines. Oncol Rep 2017; 37:1545-1554. [DOI: 10.3892/or.2017.5399] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 12/28/2016] [Indexed: 11/06/2022] Open
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34
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Chacon JA, Schutsky K, Powell DJ. The Impact of Chemotherapy, Radiation and Epigenetic Modifiers in Cancer Cell Expression of Immune Inhibitory and Stimulatory Molecules and Anti-Tumor Efficacy. Vaccines (Basel) 2016; 4:E43. [PMID: 27854240 PMCID: PMC5192363 DOI: 10.3390/vaccines4040043] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 10/17/2016] [Accepted: 11/01/2016] [Indexed: 12/19/2022] Open
Abstract
Genomic destabilizers, such as radiation and chemotherapy, and epigenetic modifiers are used for the treatment of cancer due to their apoptotic effects on the aberrant cells. However, these therapies may also induce widespread changes within the immune system and cancer cells, which may enable tumors to avoid immune surveillance and escape from host anti-tumor immunity. Genomic destabilizers can induce immunogenic death of tumor cells, but also induce upregulation of immune inhibitory ligands on drug-resistant cells, resulting in tumor progression. While administration of immunomodulatory antibodies that block the interactions between inhibitory receptors on immune cells and their ligands on tumor cells can mediate cancer regression in a subset of treated patients, it is crucial to understand how genomic destabilizers alter the immune system and malignant cells, including which inhibitory molecules, receptors and/or ligands are upregulated in response to genotoxic stress. Knowledge gained in this area will aid in the rational design of trials that combine genomic destabilizers, epigenetic modifiers and immunotherapeutic agents that may be synergized to improve clinical responses and prevent tumor escape from the immune system. Our review article describes the impact genomic destabilizers, such as radiation and chemotherapy, and epigenetic modifiers have on anti-tumor immunity and the tumor microenvironment. Although genomic destabilizers cause DNA damage on cancer cells, these therapies can also have diverse effects on the immune system, promote immunogenic cell death or survival and alter the cancer cell expression of immune inhibitor molecules.
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Affiliation(s)
- Jessica Ann Chacon
- Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - Keith Schutsky
- Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - Daniel J Powell
- Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
- Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
- Department of Pathology and Laboratory Medicine, Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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35
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Van Der Kraak L, Goel G, Ramanan K, Kaltenmeier C, Zhang L, Normolle DP, Freeman GJ, Tang D, Nason KS, Davison JM, Luketich JD, Dhupar R, Lotze MT. 5-Fluorouracil upregulates cell surface B7-H1 (PD-L1) expression in gastrointestinal cancers. J Immunother Cancer 2016; 4:65. [PMID: 27777774 PMCID: PMC5067917 DOI: 10.1186/s40425-016-0163-8] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 09/13/2016] [Indexed: 12/21/2022] Open
Abstract
Background Resistance to chemotherapy is a major obstacle in the effective treatment of cancer patients. B7-homolog 1, also known as programmed death ligand-1 (PD-L1), is an immunoregulatory protein that is overexpressed in several human cancers. Interaction of B7-H1 with programmed death 1 (PD-1) prevents T-cell activation and proliferation, sequestering the T-cell receptor from the cell membrane, inducing T-cell apoptosis, thereby leading to cancer immunoresistance. B7-H1 upregulation contributes to chemoresistance in several types of cancer, but little is known with respect to changes associated with 5-fluorouracil (5-FU) or gastrointestinal cancers. Methods HCT 116 p53+/+, HCT 116 p53−/− colorectal cancer (CRC) and OE33 esophageal adenocarcinoma (EAC) cells were treated with increasing doses of 5-FU (0.5 uM, 5 uM, 50 uM, 500 uM) or interferon gamma (IFN-γ, 10 ng/mL) in culture for 24 h and B7-H1 expression was quantified using flow cytometry and western blot analysis. We also evaluated B7-H1 expression, by immunohistochemistry, in tissue collected prior to and following neoadjuvant therapy in 10 EAC patients. Results B7-H1 expression in human HCT 116 p53+/+ and HCT 116 p53−/− CRC cells lines, while low at baseline, can be induced by treatment with 5-FU. OE33 baseline B7-H1 expression exceeded CRC cell maximal expression and could be further increased in a dose dependent manner following 5-FU treatment in the absence of immune cells. We further demonstrate tumor B7-H1 expression in esophageal adenocarcinoma patient-derived pre-treatment biopsies. While B7-H1 expression was not enhanced in post-treatment esophagectomy specimens, this may be due to the limits of immunohistochemical quantification. Conclusions B7-H1/PD-L1 expression can be increased following treatment with 5-FU in gastrointestinal cancer cell lines, suggesting alternative mechanisms to classic immune-mediated upregulation. This suggests that combining 5-FU treatment with PD-1/B7-H1 blockade may improve treatment in patients with gastrointestinal adenocarcinoma.
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Affiliation(s)
- Lauren Van Der Kraak
- Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA USA
| | - Gaurav Goel
- Department of Medicine, Division of Hematology-Oncology, University of Pittsburgh, Pittsburgh, PA USA.,Current address: Division of Medical Oncology, University of Kentucky Markey Cancer Center, Lexington, KY USA
| | | | | | - Lin Zhang
- Department of Pharmacology & Chemical Biology, University of Pittsburgh Cancer Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - Daniel P Normolle
- Department of Biostatistics, University of Pittsburgh, Pittsburgh, PA USA
| | - Gordon J Freeman
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA USA
| | - Daolin Tang
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA USA
| | - Katie S Nason
- Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA USA
| | - Jon M Davison
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA USA
| | - James D Luketich
- Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA USA
| | - Rajeev Dhupar
- Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA USA
| | - Michael T Lotze
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA USA.,Department of Immunology, University of Pittsburgh, Pittsburgh, PA USA.,Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA USA
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36
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McDaniel AS, Alva A, Zhan T, Xiao H, Cao X, Gursky A, Siddiqui J, Chinnaiyan AM, Jiang H, Lee CT, Mehra R. Expression of PDL1 (B7-H1) Before and After Neoadjuvant Chemotherapy in Urothelial Carcinoma. Eur Urol Focus 2016; 1:265-268. [DOI: 10.1016/j.euf.2015.03.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 02/24/2015] [Accepted: 03/13/2015] [Indexed: 01/18/2023]
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37
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Chen J, Jiang CC, Jin L, Zhang XD. Regulation of PD-L1: a novel role of pro-survival signalling in cancer. Ann Oncol 2015; 27:409-16. [PMID: 26681673 DOI: 10.1093/annonc/mdv615] [Citation(s) in RCA: 546] [Impact Index Per Article: 60.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 12/02/2015] [Indexed: 12/18/2022] Open
Abstract
Evasion of immune system is a hallmark of cancer, which enables cancer cells to escape the attack from immune cells. Cancer cells can express many immune inhibitory signalling proteins to cause immune cell dysfunction and apoptosis. One of these inhibitory molecules is programmed death-ligand-1 (PD-L1), which binds to programmed death-1 (PD-1) expressed on T-cells, B-cells, dendritic cells and natural killer T-cells to suppress anti-cancer immunity. Therefore, anti-PD-L1 and anti-PD-1 antibodies have been used for the treatment of cancer, showing promising outcomes. However, only a proportion of patients respond to the treatments. Further understanding of the regulation of PD-L1 expression could be helpful for the improvement of anti-PD-L1 and anti-PD-1 treatments. Studies have shown that PD-L1 expression is regulated by signalling pathways, transcriptional factors and epigenetic factors. In this review, we summarise the recent progress of the regulation of PD-L1 expression in cancer cells and propose a regulatory model for unified explanation. Both PI3K and MAPK pathways are involved in PD-L1 regulation but the downstream molecules that control PD-L1 and cell proliferation may differ. Transcriptional factors hypoxia-inducible factor-1α and signal transducer and activation of transcription-3 act on the promoter of PD-L1 to regulate its expression. In addition, microRNAs including miR-570, miR-513, miR-197, miR-34a and miR-200 negatively regulate PD-L1. Clinically, it could increase treatment efficacy of targeted therapy by choosing those molecules that control both PD-L1 expression and cell proliferation.
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Affiliation(s)
- J Chen
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Newcastle School of Biomedical Sciences, The University of Queensland, Brisbane
| | - C C Jiang
- School of Medicine and Public Health, The University of Newcastle, Newcastle, Australia
| | - L Jin
- School of Medicine and Public Health, The University of Newcastle, Newcastle, Australia
| | - X D Zhang
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Newcastle
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38
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Narayanan KB, Ali M, Barclay BJ, Cheng QS, D'Abronzo L, Dornetshuber-Fleiss R, Ghosh PM, Gonzalez Guzman MJ, Lee TJ, Leung PS, Li L, Luanpitpong S, Ratovitski E, Rojanasakul Y, Romano MF, Romano S, Sinha RK, Yedjou C, Al-Mulla F, Al-Temaimi R, Amedei A, Brown DG, Ryan EP, Colacci A, Hamid RA, Mondello C, Raju J, Salem HK, Woodrick J, Scovassi AI, Singh N, Vaccari M, Roy R, Forte S, Memeo L, Kim SY, Bisson WH, Lowe L, Park HH. Disruptive environmental chemicals and cellular mechanisms that confer resistance to cell death. Carcinogenesis 2015; 36 Suppl 1:S89-110. [PMID: 26106145 DOI: 10.1093/carcin/bgv032] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Cell death is a process of dying within biological cells that are ceasing to function. This process is essential in regulating organism development, tissue homeostasis, and to eliminate cells in the body that are irreparably damaged. In general, dysfunction in normal cellular death is tightly linked to cancer progression. Specifically, the up-regulation of pro-survival factors, including oncogenic factors and antiapoptotic signaling pathways, and the down-regulation of pro-apoptotic factors, including tumor suppressive factors, confers resistance to cell death in tumor cells, which supports the emergence of a fully immortalized cellular phenotype. This review considers the potential relevance of ubiquitous environmental chemical exposures that have been shown to disrupt key pathways and mechanisms associated with this sort of dysfunction. Specifically, bisphenol A, chlorothalonil, dibutyl phthalate, dichlorvos, lindane, linuron, methoxychlor and oxyfluorfen are discussed as prototypical chemical disruptors; as their effects relate to resistance to cell death, as constituents within environmental mixtures and as potential contributors to environmental carcinogenesis.
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Affiliation(s)
- Kannan Badri Narayanan
- Department of Chemistry and Biochemistry, Yeungnam University, Gyeongsan 712-749, South Korea, Sultan Zainal Abidin University, Malaysia, Plant Biotechnologies Inc, St. Albert AB, Canada, Computer Science Department, Southern Illinois University, Carbondale, IL 62901, USA, Department of Urology, University of California Davis, Sacramento, CA 95817, USA, Department of Pharmacology and Toxicology, University of Vienna, Austria, University of Puerto Rico, Medical Sciences Campus, School of Public Health, Nutrition Program, San Juan Puerto Rico 00936-5067, USA, Department of Anatomy, College of Medicine, Yeungnam University, Daegu, 705-717, South Korea, School of Biomedical Science, The Chinese University Of Hong Kong, Hong Kong, China, Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand, Department of Otolaryngology/Head and Neck Surgery, Head and Neck Cancer Research Division, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA, Department of Pharmaceutical Sciences, Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA, Department of Molecular Medicine and Medical Biotechnology, Federico II University of Naples, 80131 Naples, Italy, Department of Molecular and Experimental Medicine, MEM 180, The Scripps Research Institute, La Jolla, CA 92037, USA, Department of Biology, Jackson State University, Jackson, MS 39217, USA, Department of Pathology, Kuwait University, Safat 13110, Kuwait, Department of Experimental and Clinical Medicine, University of Firenze, Firenze, 50134, Italy, Department of Environmental and Radiological Health Sciences, Colorado state University/ Colorado School of Public Health, Fort Collins, CO 80523-1680, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna, 40126, Italy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Se
| | - Manaf Ali
- Sultan Zainal Abidin University, Malaysia
| | | | - Qiang Shawn Cheng
- Computer Science Department, Southern Illinois University, Carbondale, IL 62901, USA
| | - Leandro D'Abronzo
- Department of Urology, University of California Davis, Sacramento, CA 95817, USA
| | | | - Paramita M Ghosh
- Department of Urology, University of California Davis, Sacramento, CA 95817, USA
| | - Michael J Gonzalez Guzman
- University of Puerto Rico, Medical Sciences Campus, School of Public Health, Nutrition Program, San Juan Puerto Rico 00936-5067, USA
| | - Tae-Jin Lee
- Department of Anatomy, College of Medicine, Yeungnam University, Daegu, 705-717, South Korea
| | - Po Sing Leung
- School of Biomedical Science, The Chinese University Of Hong Kong, Hong Kong, China
| | - Lin Li
- School of Biomedical Science, The Chinese University Of Hong Kong, Hong Kong, China
| | - Suidjit Luanpitpong
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Edward Ratovitski
- Department of Otolaryngology/Head and Neck Surgery, Head and Neck Cancer Research Division, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Yon Rojanasakul
- Department of Pharmaceutical Sciences, Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
| | - Maria Fiammetta Romano
- Department of Molecular Medicine and Medical Biotechnology, Federico II University of Naples, 80131 Naples, Italy
| | - Simona Romano
- Department of Molecular Medicine and Medical Biotechnology, Federico II University of Naples, 80131 Naples, Italy
| | - Ranjeet K Sinha
- Department of Molecular and Experimental Medicine, MEM 180, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Clement Yedjou
- Department of Biology, Jackson State University, Jackson, MS 39217, USA
| | - Fahd Al-Mulla
- Department of Pathology, Kuwait University, Safat 13110, Kuwait
| | | | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Firenze, Firenze, 50134, Italy
| | - Dustin G Brown
- Department of Environmental and Radiological Health Sciences, Colorado state University/ Colorado School of Public Health, Fort Collins, CO 80523-1680, USA
| | - Elizabeth P Ryan
- Department of Environmental and Radiological Health Sciences, Colorado state University/ Colorado School of Public Health, Fort Collins, CO 80523-1680, USA
| | - Annamaria Colacci
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna, 40126, Italy
| | - Roslida A Hamid
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia
| | - Chiara Mondello
- Institute of Molecular Genetics, National Research Council, Pavia, 27100, Italy
| | - Jayadev Raju
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario, K1A0K9, Canada
| | - Hosni K Salem
- Urology Department, Kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo, 12515, Egypt
| | - Jordan Woodrick
- Molecular Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington DC, 20057, USA
| | - A Ivana Scovassi
- Institute of Molecular Genetics, National Research Council, Pavia, 27100, Italy
| | - Neetu Singh
- Advenced Molecular Science Research Centre, King George's Medical University, Lucknow, Uttar Pradesh, 226003, India
| | - Monica Vaccari
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna, 40126, Italy
| | - Rabindra Roy
- Molecular Oncology Program, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington DC, 20057, USA
| | - Stefano Forte
- Mediterranean Institute of Oncology, Viagrande, 95029, Italy
| | - Lorenzo Memeo
- Mediterranean Institute of Oncology, Viagrande, 95029, Italy
| | - Seo Yun Kim
- Department of Internal Medicine, Korea Cancer Center Hospital, Seoul 139-706, South Korea
| | - William H Bisson
- Environmental and Molecular Toxicology, Environmental Health Science Center, Oregon State University, Corvallis, OR 97331, USA and
| | - Leroy Lowe
- Getting to Know Cancer, Truro, Nova Scotia, Canada
| | - Hyun Ho Park
- Department of Chemistry and Biochemistry, Yeungnam University, Gyeongsan 712-749, South Korea, Sultan Zainal Abidin University, Malaysia, Plant Biotechnologies Inc, St. Albert AB, Canada, Computer Science Department, Southern Illinois University, Carbondale, IL 62901, USA, Department of Urology, University of California Davis, Sacramento, CA 95817, USA, Department of Pharmacology and Toxicology, University of Vienna, Austria, University of Puerto Rico, Medical Sciences Campus, School of Public Health, Nutrition Program, San Juan Puerto Rico 00936-5067, USA, Department of Anatomy, College of Medicine, Yeungnam University, Daegu, 705-717, South Korea, School of Biomedical Science, The Chinese University Of Hong Kong, Hong Kong, China, Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand, Department of Otolaryngology/Head and Neck Surgery, Head and Neck Cancer Research Division, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA, Department of Pharmaceutical Sciences, Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA, Department of Molecular Medicine and Medical Biotechnology, Federico II University of Naples, 80131 Naples, Italy, Department of Molecular and Experimental Medicine, MEM 180, The Scripps Research Institute, La Jolla, CA 92037, USA, Department of Biology, Jackson State University, Jackson, MS 39217, USA, Department of Pathology, Kuwait University, Safat 13110, Kuwait, Department of Experimental and Clinical Medicine, University of Firenze, Firenze, 50134, Italy, Department of Environmental and Radiological Health Sciences, Colorado state University/ Colorado School of Public Health, Fort Collins, CO 80523-1680, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna, 40126, Italy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Se
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Liu Q, Gong W, Cheng Z, Jiang H, Cao F, Li X. Counteracting immunosuppressive cofactor B7-H1 may enhance the effects of chemotherapy in cancer patients. Immunotherapy 2013; 5:557-9. [PMID: 23725277 DOI: 10.2217/imt.13.38] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Qiong Liu
- Department of Gynecology, The Affiliated Hospital of Hubei University of Arts & Science, Xiang Yang, Hubei 441021, China
| | - Wenrong Gong
- Central Laboratory, The Affiliated Hospital of Hubei University of Arts & Science, Xiang Yang, Hubei 441021, China and Center for Molecular Medicine, Medical College, Hubei University of Arts & Science, Xiang Yang, Hubei 441053, China
| | - Zhengjiang Cheng
- Central Laboratory, The Affiliated Hospital of Hubei University of Arts & Science, Xiang Yang, Hubei 441021, China
| | - Hua Jiang
- Central Laboratory, The Affiliated Hospital of Hubei University of Arts & Science, Xiang Yang, Hubei 441021, China
| | - Fengsheng Cao
- Central Laboratory, The Affiliated Hospital of Hubei University of Arts & Science, Xiang Yang, Hubei 441021, China
| | - Xianxian Li
- Central Laboratory, The Affiliated Hospital of Hubei University of Arts & Science, Xiang Yang, Hubei 441021, China
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