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Mani R, Martin CG, Balu KE, Wang Q, Rychahou P, Izumi T, Evers BM, Suzuki Y. A Novel Protozoa Parasite-Derived Protein Adjuvant Is Effective in Immunization with Cancer Cells to Activate the Cancer-Specific Protective Immunity and Inhibit the Cancer Growth in a Murine Model of Colorectal Cancer. Cells 2024; 13:111. [PMID: 38247803 PMCID: PMC10814441 DOI: 10.3390/cells13020111] [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: 12/07/2023] [Revised: 12/31/2023] [Accepted: 01/05/2024] [Indexed: 01/23/2024] Open
Abstract
Cancer-specific CD8+ cytotoxic T cells play important roles in preventing cancer growth, and IFN-γ, in addition to IL-12 and type I interferon, is critical for activating CD8+ cytotoxic T cells. We recently identified the capability of the amino-terminus region of dense granule protein 6 (GRA6Nt) of Toxoplasma gondii, an intracellular protozoan parasite, to activate IFN-γ production of microglia, a tissue-resident macrophage population. Therefore, in the present study, we examined whether recombinant GRA6Nt protein (rGRA6Nt) functions as an effective adjuvant to potently activate cancer-specific protective immunity using a murine model of MC38 colorectal cancer (CRC). When mice were immunized with non-replicable (either treated with mitomycin C or irradiated by X-ray) MC38 CRC cells in combination with rGRA6Nt adjuvant and received a challenge implantation of replication-capable MC38 tumor cells, those mice markedly inhibited the growth of the implanted tumors in association with a two-fold increase in CD8+ T cell density within the tumors. In addition, CD8+ T cells of the immunized mice secreted significantly increased amounts of granzyme B, a key mediator of the cytotoxic activity of CD8+ T cells, and IFN-γ in response to MC38 CRC cells in vitro when compared to the T cells from unimmunized mice. Notably, the protective effects of the immunization were specific to MC38 CRC cells, as the immunized mice did not exhibit a significantly inhibited growth of EL4 lymphoma tumors. These results indicate that rGRA6Nt is a novel and effective protein adjuvant when used in immunizations with non-replicable cancer cells to potently activate the protective immunity specifically against the cancer cells employed in the immunization.
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Affiliation(s)
- Rajesh Mani
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY 40536, USA; (R.M.)
| | - Chloe G. Martin
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY 40536, USA; (R.M.)
| | - Kanal E. Balu
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY 40536, USA; (R.M.)
| | - Qingding Wang
- Department of Surgery, University of Kentucky, Lexington, KY 40536, USA (P.R.)
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
| | - Piotr Rychahou
- Department of Surgery, University of Kentucky, Lexington, KY 40536, USA (P.R.)
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
| | - Tadahide Izumi
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
- Department of Toxicology and Cancer Biology, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - B. Mark Evers
- Department of Surgery, University of Kentucky, Lexington, KY 40536, USA (P.R.)
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
| | - Yasuhiro Suzuki
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY 40536, USA; (R.M.)
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
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Shan J, Jing W, Ping Y, Shen C, Han D, Liu F, Liu Y, Li C, Zhang Y. LFA-1 regulated by IL-2/STAT5 pathway boosts antitumor function of intratumoral CD8 + T cells for improving anti-PD-1 antibody therapy. Oncoimmunology 2023; 13:2293511. [PMID: 38125721 PMCID: PMC10730141 DOI: 10.1080/2162402x.2023.2293511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023] Open
Abstract
Anti-PD-1 antibody therapy has achieved success in tumor treatment; however, the duration of its clinical benefits are typically short. The functional state of intratumoral CD8+ T cells substantially affects the efficacy of anti-PD-1 antibody therapy. Understanding how intratumoral CD8+ T cells change will contribute to the improvement in anti-PD-1 antibody therapy. In this study, we found that tumor growth was not arrested after the late administration of anti-PD-1 antibody and that the antitumor function of CD8+ T cells decreased with tumor progression. The results of the RNA sequencing of CD8+ T cells infiltrating the tumor site on days 7 and 14 showed that the cell adhesion molecule Lymphocyte Function-associated Antigen-1 (LFA-1) participates in regulating the antitumor function of CD8+ T cells and that decreased LFA-1 expression in intratumoral CD8+ T cells is associated with tumor progression. By analyzing the Gene Expression Omnibus (GEO) database and our results, we found that the antitumor function of intratumoral CD8+ T cells with high LFA-1 expression was stronger. The formation of immune synapses is impaired in Itgal-si CD8+ T cells, resulting in decreased anti-tumor function. LFA-1 expression in intratumoral CD8+ T cells is regulated by the IL-2/STAT5 pathway. The combination of IL-2 and anti-PD-1 antibody effectively enhanced LFA-1 expression and the antitumor function of intratumoral CD8+ T cells. The adoptive transfer of OT-1 T cells overexpressing LFA-1, STAT5A, or STAT5B resulted in higher antitumor function, deferred tumor growth, and prolonged survival. These findings indicate that LFA-1-mediated immune synapse acts as a regulator of the antitumor function of intratumoral CD8+ T cells, which can be applied to improve anti-PD-1 antibody therapy.
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Affiliation(s)
- Jiqi Shan
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Wei Jing
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Yu Ping
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Chunyi Shen
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Dong Han
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Fengsen Liu
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Yaqing Liu
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Congcong Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Yi Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
- College of Life Science, Zhengzhou University, Zhengzhou, Henan, China
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- State Key Laboratory of Esophageal Cancer Prevention and Treatment, Zhengzhou University, Zhengzhou, Henan, China
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3
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Kuttappan S, Bhowmik R, Gopi Mohan C. Probing the origins of programmed death ligand-1 inhibition by implementing machine learning-assisted sequential virtual screening techniques. Mol Divers 2023:10.1007/s11030-023-10697-5. [PMID: 37470920 DOI: 10.1007/s11030-023-10697-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 07/07/2023] [Indexed: 07/21/2023]
Abstract
PD-L1 is a key immunotarget involved in binding to its receptor PD-1. PD-L1/PD-1 interface blocking using antibodies (or small molecules) is the central area of interest for tumor suppression in various cancers. Blocking the PD-L1/PD-1 pathway in the tumor cells results in its immune activation and destruction, and thereby restoring the T-cell proliferation and cytokine production. The active binding site interface residues of PD-L1/PD-1 were experimentally known and proven by structural biology and site-directed mutagenesis studies. Structure-based molecular design technique was employed to identify the inhibitors for blocking the PD-L1/PD-1 interface. Nine hits to leads were identified from the SPECS small molecule database by machine learning, molecular docking, and molecular dynamics simulation techniques. Following this, a machine learning-assisted QSAR modeling approach was implemented using ChEMBL database to gain insights into the inhibitory potential of PD-L1 inhibitors and predict the activity of our previously screened nine hit molecules. The best leads identified in the present study bind strongly with the active sites of PD-L1/PD-1 interface residues, which include A121, M115, I116, S117, I54, Y56, D122, and Y123. These computational leads are considered promising molecules for further in vitro and in vivo analysis to be developed as potential PD-L1 checkpoint inhibitors to cure different types of cancers.
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Affiliation(s)
- Shruthy Kuttappan
- Bioinformatics and Computational Biology Lab, Amrita School for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi, Kerala State, 682 041, India
- Institute of Advanced Machinery and Design, Seoul National University, Seoul, 08826, South Korea
| | - Ratul Bhowmik
- Bioinformatics and Computational Biology Lab, Amrita School for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi, Kerala State, 682 041, India
| | - C Gopi Mohan
- Bioinformatics and Computational Biology Lab, Amrita School for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi, Kerala State, 682 041, India.
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Yong C, Cambron-Mellott MJ, Seal B, Will O, Maculaitis MC, Clapp K, Mulvihill E, Cotarla I, Mehra R. Patient and Caregiver Preferences for First-Line Treatments of Metastatic Non-Small Cell Lung Cancer: A Discrete Choice Experiment. Patient Prefer Adherence 2022; 16:123-135. [PMID: 35068928 PMCID: PMC8769053 DOI: 10.2147/ppa.s338840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 12/15/2021] [Indexed: 12/30/2022] Open
Abstract
PURPOSE The approval of immune checkpoint inhibitors for metastatic non-small-cell lung carcinomas (mNSCLC) treatment has presented more care options. Therefore, it is important to identify the benefit-risk trade-offs patients and caregivers are willing to make among potential treatment options. This study quantified the preferences of patients and caregivers for attributes of mNSCLC treatment. METHODS Patients with mNSCLC and caregivers completed an online survey assessing preferences using a discrete choice experiment. Respondents chose between hypothetical treatment profiles, with varying levels for 7 attributes associated with first-line treatment, including overall survival (OS), progression-free survival, select adverse events (AEs), and regimen (caregivers). Hierarchical Bayesian modeling was used to estimate attribute-level preference weights. RESULTS Patients (n = 308) and caregivers (n = 166) most valued increasing OS from 11 to 30 months, followed by decreasing the risk of a serious AE (grade 3/4) that may lead to hospitalization from 70% to 18%. These attributes were over twice as important to both sets of respondents as the other attributes measured. Patients and caregivers would accept increases in the risks of a serious AE (grade 3/4) from 18% to 70% and all grades nausea from 10% to 69% if OS increased by 16.8 and 4.0 months, respectively. The least valued attributes were all grades of pneumonitis (patients) and all grades of skin rash (caregivers). CONCLUSION Patients and caregivers are willing to make trade-offs between efficacy and toxicity and may require up to 1.5 years of increased OS to accept a higher risk of AEs. These results can provide guidance to oncologists when engaging in shared-decision making discussions.
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Affiliation(s)
| | - M Janelle Cambron-Mellott
- Cerner Enviza, Malvern, PA, USA
- Correspondence: M Janelle Cambron-Mellott Cerner Enviza, 51 Valley Stream Pkwy, Malvern, PA, 19355, USATel +1 816 201 2190 Email
| | | | | | | | | | | | | | - Ranee Mehra
- University of Maryland Marlene and Stewart Greenebaum Cancer Center, Baltimore, MD, USA
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5
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Xu F, Zeng Z, Yan B, Fu Y, Sun Y, Yang G, Tu L, Watanabe S, Jabbour SK, Bravaccini S, Fanini F, Zhou J, Shen Y. Safety and efficacy of anti-PD-1 inhibitors in Chinese patients with advanced lung cancer and hepatitis B virus infection: a retrospective single-center study. Transl Lung Cancer Res 2021; 10:1819-1828. [PMID: 34012795 PMCID: PMC8107742 DOI: 10.21037/tlcr-21-79] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 04/22/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Programmed death protein (ligand) 1 [PD-(L)1] inhibitors have provided new therapeutic options for advanced lung cancer. However, patients with hepatitis B virus (HBV) infection have been traditionally excluded from most registered trials of this form of treatment. METHODS We performed a retrospective analysis of patients with HBV and advanced lung cancer who received anti-PD-1 immunotherapy from September 2018 to May 2020 in our department. Treatment-related hepatotoxicity was evaluated and recorded. Overall response rate and progression free survival were also assessed in the patients using iRECIST. RESULTS Seventeen patients were evaluated in this analysis. Of these, six (35.3%) experienced hepatic transaminase elevation during immunotherapy. Three of these patients developed Grade 3 hepatic immune-related adverse events and received systemic corticosteroids, following which aminotransferase levels recovered to normal in all patients and no adverse events were observed in subsequent treatment. No patient experienced HBV reactivation or flare. One patient developed active pulmonary tuberculosis (TB). Other adverse events were mild, well tolerated and short term. The objective response rate (ORR) of the cohort was 62.5%, and the median progression-free survival (PFS) was 3 months. CONCLUSIONS Lung cancer patients can be treated safely with anti-PD-1 inhibitors in the context of HBV infection. Close monitoring for hepatotoxicity and prophylactic antiviral therapy is advised. Further studies on the use of anti-PD-1 inhibitors in HBV-infected patients are needed.
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Affiliation(s)
- Fei Xu
- Department of Respiratory Diseases, The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, China
| | - Zhu Zeng
- Department of Respiratory Diseases, The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, China
| | - Bing Yan
- Department of Respiratory Diseases, The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, China
| | - Yiqi Fu
- Department of Respiratory Diseases, The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, China
| | - Yilan Sun
- Department of Respiratory Diseases, The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, China
| | - Guangdie Yang
- Department of Respiratory Diseases, The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, China
| | - Lingfang Tu
- Department of Respiratory Diseases, The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, China
| | - Satoshi Watanabe
- Department of Respiratory Medicine and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Salma K. Jabbour
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, Rutgers Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ, USA
| | - Sara Bravaccini
- IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, Meldola, Italy
| | - Francesca Fanini
- IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, Meldola, Italy
| | - Jianying Zhou
- Department of Respiratory Diseases, The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, China
| | - Yihong Shen
- Department of Respiratory Diseases, The First Affiliated Hospital of College of Medicine, Zhejiang University, Hangzhou, China
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6
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Liu X, Liang X, Liang J, Li Y, Wang J. Immune Thrombocytopenia Induced by Immune Checkpoint Inhibitors in Solid Cancer: Case Report and Literature Review. Front Oncol 2020; 10:530478. [PMID: 33365266 PMCID: PMC7750527 DOI: 10.3389/fonc.2020.530478] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 10/26/2020] [Indexed: 12/25/2022] Open
Abstract
Immune checkpoint inhibitors, including antibodies targeting programmed cell death protein-1 (PD-1) and its receptor programmed cell death ligand-1 (PD-L1), represent promising therapeutic strategies for advanced human malignancies. However, a subgroup of patients experiences various autoimmune toxicities, termed immune-related adverse events (irAEs), that occur as a result of on-target and off-tumor autoimmune responses. Although irAEs are generally confirmed to be less severe than toxicities caused by conventional chemotherapy and targeted therapy, uncommon irAEs, such as immune thrombocytopenia, may occur with a very low incidence and sometimes be severe or fatal. This review focuses on the epidemiology, clinical presentation, and prognosis of immune thrombocytopenia occurring in advanced cancer patients induced by immune checkpoint inhibitors, especially in those with PD-1 or PD-L1 inhibitor treatment. We also first present one patient with non-small cell lung cancer who received the PD-L1 inhibitor durvalumab and developed severe thrombocytopenia.
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Affiliation(s)
- Xiaolin Liu
- Department of Oncology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Xiuju Liang
- Department of Oncology, No. 960 Hospital, The People's Liberation Army, Jinan, China
| | - Jing Liang
- Department of Oncology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Yan Li
- Department of Oncology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Jun Wang
- Department of Oncology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
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Zhao B, Zhao H, Zhao J. Efficacy of PD-1/PD-L1 blockade monotherapy in clinical trials. Ther Adv Med Oncol 2020; 12:1758835920937612. [PMID: 32728392 PMCID: PMC7366397 DOI: 10.1177/1758835920937612] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 06/05/2020] [Indexed: 12/23/2022] Open
Abstract
Background: Inhibitors targeting programmed cell death 1 (PD-1) and programmed
death-ligand 1 (PD-L1) have unprecedented effects in cancer treatment.
However, the objective response rates (ORRs), progression-free survival
(PFS), and overall survival (OS) of PD-1/PD-L1 blockade monotherapy have not
been systematically evaluated. Methods: We searched Embase, PubMed, and Cochrane database from inception to July 2019
for prospective clinical trials on single-agent PD-1/PD-L1 antibodies
(avelumab, atezolizumab, durvalumab, cemiplimab, pembrolizumab, and
nivolumab) with information regarding ORR, PFS, and OS. Results: Totally, 28,304 patients from 160 perspective trials were included. Overall,
4747 responses occurred in 22,165 patients treated with PD-1/PD-L1
monotherapy [ORR, 20.21%; 95% confidence interval (CI), 18.34–22.15%].
Compared with conventional therapy, PD-1/PD-L1 blockade immunotherapy was
associated with more tumor responses (odds ratio, 1.98; 95% CI, 1.52–2.57)
and better OS [hazard ratio (HR), 0.75; 95% CI, 0.67–0.83]. The ORRs varied
significantly across cancer types and PD-L1 expression status. Line of
treatment, clinical phase and drug target also impacted the response rates
in some tumors. A total of 2313 of 9494 PD-L1 positive patients (ORR,
24.39%; 95% CI, 22.29–26.54%) and 456 of 4215 PD-L1 negative patients (ORR,
10.34%; 95% CI, 8.67–12.14%) achieved responses. For PD-L1 negative
patients, the ORR (odds ratio, 0.92; 95% CI, 0.70–1.20) and PFS (HR, 1.15;
95% CI, 0.87–1.51) associated with immunotherapy and conventional treatment
were similar. However, PD-1/PD-L1 blockade monotherapy decreased the risk of
death in both PD-L1 positive (HR, 0.66; 95% CI, 0.60–0.72) and PD-L1
negative (HR, 0.86; 95% CI, 0.74–0.99) patients compared with conventional
therapy. Conclusion: The efficacies associated with PD-1/PD-L1 monotherapy vary significantly
across cancer types and PD-L1 expression. This comprehensive summary of
clinical benefit from immunotherapy in cancer patients provides an important
guide for clinicians.
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Affiliation(s)
- Bin Zhao
- The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, 109 Xueyuan West Rd, Wenzhou, 325035, China
| | - Hong Zhao
- The Cancer Center of the Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, China
| | - Jiaxin Zhao
- The Second Affiliated Hospital & Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China
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p110δ PI3K as a therapeutic target of solid tumours. Clin Sci (Lond) 2020; 134:1377-1397. [DOI: 10.1042/cs20190772] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 05/21/2020] [Accepted: 06/01/2020] [Indexed: 12/12/2022]
Abstract
AbstractFrom the time of first characterization of PI3K as a heterodimer made up of a p110 catalytic subunit and a regulatory subunit, a wealth of evidence have placed the class IA PI3Ks at the forefront of drug development for the treatment of various diseases including cancer. The p110α isoform was quickly brought at the centre of attention in the field of cancer research by the discovery of cancer-specific gain-of-function mutations in PIK3CA gene in a range of human solid tumours. In contrast, p110δ PI3K was placed into the spotlight of immunity, inflammation and haematologic malignancies because of the preferential expression of this isoform in leucocytes and the rare mutations in PIK3CD gene. The last decade, however, several studies have provided evidence showing that the correlation between the PIK3CA mutations and the response to PI3K inhibition is less clear than originally considered, whereas concurrently an unexpected role of p110δ PI3K in solid tumours has being emerging. While PIK3CD is mostly non-mutated in cancer, the expression levels of p110δ protein seem to act as an intrinsic cancer-causing driver in various solid tumours including breast, prostate, colorectal and liver cancer, Merkel-Cell carcinoma, glioblastoma and neurobalstoma. Furthermore, p110δ selective inhibitors are being studied as potential single agent treatments or as combination partners in attempt to improve cancer immunotherapy, with both strategies to shown great promise for the treatment of several solid tumours. In this review, we discuss the evidence implicating the p110δ PI3K in human solid tumours, their impact on the current state of the field and the potential of using p110δ-selective inhibitors as monotherapy or combined therapy in different cancer contexts.
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Hao J, Li M, Zhang T, Yu H, Liu Y, Xue Y, An R, Wang S. Prognostic Value of Tumor-Infiltrating Lymphocytes Differs Depending on Lymphocyte Subsets in Esophageal Squamous Cell Carcinoma: An Updated Meta-Analysis. Front Oncol 2020; 10:614. [PMID: 32411602 PMCID: PMC7198736 DOI: 10.3389/fonc.2020.00614] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 04/03/2020] [Indexed: 12/15/2022] Open
Abstract
Background: Tumor-infiltrating lymphocytes (TILs) play a role in the anti-tumor immune response, and are often found in esophageal squamous cell carcinoma (ESCC). Methods: We performed a systematic review and meta-analysis, aiming to establish pooled estimates for survival outcomes of TILs based on their abundance and infiltrating location. A literature search of PubMed/Medline, Embase, Web of Science and the Cochrane Library was conducted. Studies that investigated the prognostic significance of generalized, CD8+, CD4+, FoxP3+, CD3+, and CD45O+ TILs in ESCC patients were included. Results: In pooled analysis, generalized TILs infiltrating the entire tumor mass were positively associated with disease-free survival (DFS), with a univariate-related hazard ratio (HR) of 0.630 [95% confidence interval (CI) 0.415-0.955], and also positively associated with overall survival (OS), with a univariate-related HR of 0.586 (0.447-0.770) and a multivariate-related HR of 0.621 (0.439-0.878). The pan-tumor, intra-tumor and peri-tumor CD8+ TILs had a favorable effect on OS, with univariate-related HRs of 0.733 (0.555-0.968), 0.797 (0.660-0.962), and 0.776 (0.635-0.948), respectively. Similar results were observed in CD8+ TILs that infiltrated the whole tumor mass, with a multivariate-related HR of 0.705 (0.524-0.947). CD4+, FoxP3+, CD3+, and CD45O+ TILs were not linked to DFS or OS. Subtypes and spatial locations of TILs seemed to influence study outcomes. Conclusions: Experimental and analytical methods of future studies should be carefully designed to avoid overestimating the effect of TILs on prognosis. Our meta-analysis confirms the prognostic efficacy of generalized TILs and CD8+ TILs in esophageal squamous cell carcinoma (ESCC) patients.
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Affiliation(s)
- Jiatao Hao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,General Department, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Meng Li
- Neurology Department, Baoji Central Hospital, Baoji, China
| | - Taohong Zhang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hui Yu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ying Liu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yan Xue
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ruifang An
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shuai Wang
- Department of Thoracic Surgery, Zhongshan Hospital of Fudan University, Shanghai, China
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Liu J, Li C, Seery S, Yu J, Meng X. Identifying optimal first-line interventions for advanced non-small cell lung carcinoma according to PD-L1 expression: a systematic review and network meta-analysis. Oncoimmunology 2020; 9:1746112. [PMID: 32313723 PMCID: PMC7153822 DOI: 10.1080/2162402x.2020.1746112] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 02/06/2020] [Accepted: 02/06/2020] [Indexed: 12/22/2022] Open
Abstract
This network meta-analysis (NMA), based on one phase II and nine phase III studies, involving 6,124 patients with metastatic NSCLC, indirectly compares Atezolizumab + Bevacizumab + chemotherapy (ABC), Atezolizumab + chemotherapy (AC), Pembrolizumab + chemotherapy (PC), Pembrolizumab alone, Bevacizumab + chemotherapy (BC) and chemotherapy alone. Each of these is recommended as front-line interventions, according to the US FDA and the European Medicines Agency (EMA) for advanced NSCLC without EGFR mutation or ALK rearrangement. Studies were identified through PubMed, EMBASE, the Cochrane Library, Medline, and abstracts found in oncology articles. Primary endpoints, i.e., progression-free survival (PFS) and overall survival (OS) with corresponding hazard ratios (HR), objective response rates (ORR) and adverse event (AEs) with odds risk (OR) were pooled according to frequentist network meta-analytical techniques. PD-L1 expression thresholds, as well as non-squamous/squamous were used to determine subgroups. Immunotherapy plus chemotherapy appeared superior to Pembrolizumab alone for PD-L1-high (i.e., TPS≥50%) NSCLC patients. BC might also be specifically recommended as an initial first-line treatment for PD-L1-high, non-squamous NSCLC patients, since BC was not inferior to Pembrolizumab alone. PC and ABC might be preferred for NSCLC patients with intermediate PD-L1 (1% ≤PD-L1, TPS<50%) expression. BC can also be tentatively recommended specifically for PD-L1-intermediate, non-squamous NSCLC patients. Combined immunotherapies can all be recommended for PD-L1-negative (i.e., TPS<1%) NSCLC patients, although especially the ABC combination for non-squamous NSCLC patients, which was superior to PC in regards of PFS. However, PC performed comparable to ABC in the whole population and in all subgroup save this one. More predictive biomarkers could be factored into further analyses to help identifying the most effective treatment regimens for specific patient groups.
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Affiliation(s)
- Jie Liu
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, Shandong, China
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Chengming Li
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, Shandong, China
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Samuel Seery
- Department of Humanities, Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jinming Yu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Xue Meng
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
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Clinical efficacy and safety of anti-PD-1/PD-L1 inhibitors for the treatment of advanced or metastatic cancer: a systematic review and meta-analysis. Sci Rep 2020; 10:2083. [PMID: 32034198 PMCID: PMC7005709 DOI: 10.1038/s41598-020-58674-4] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 01/17/2020] [Indexed: 01/05/2023] Open
Abstract
Anti-PD-1/PD-L1 inhibitors provide a survival advantage over conventional therapies for treatment of advanced or metastatic cancer. However, the factors determining which patients benefit the most from anti-PD-1/PD-L1 inhibitors are unknown, making treatment-related decisions difficult. We performed a systematic review and meta-analysis of acquired data to assess the efficacy and toxicity of anti-PD-1/PD-L1 inhibitors in advanced and metastatic cancer. A thorough search strategy was applied to identify randomised controlled trials (RCTs) in Pubmed, Embase, Cochrane, and major conferences. Studies meeting predefined selection criteria were selected, and two independent investigators performed data extraction; overall survival (OS), progression-free survival (PFS), and overall response rate were compared between anti-PD-1/PD-L1 inhibitors and control therapies. We calculated the pooled response rate and 95% CIs of all-grade and high-grade (≥3) adverse effects and evaluated the within-study heterogeneity using subgroup, sensitivity, and meta-regression analyses. In final, we included eligible 35 RCTs (21047 patients). The main estimated hazard ratios (HRs) for OS and PFS were 0.76 (0.71–0.82) and 0.81 (0.73–0.89) in a random-effects model. The anti-PD-1/PD-L1 inhibitor group had a significantly high risk for all-grade immune-related adverse events. Anti-PD-1/PD-L1 inhibitors were identified as a preferable treatment option for advanced or metastatic cancer patients who are male, aged < 65 years, current or former smokers, had no CNS or liver metastasis, had not EGFR mutation, and had high PD-L1 expression.
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12
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Zhuang Y, Liu C, Liu J, Li G. Resistance Mechanism of PD-1/PD-L1 Blockade in the Cancer-Immunity Cycle. Onco Targets Ther 2020; 13:83-94. [PMID: 32021257 PMCID: PMC6954840 DOI: 10.2147/ott.s239398] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 12/16/2019] [Indexed: 12/12/2022] Open
Abstract
In recent years, the PD-1/PD-L1 axis blockade has become a very promising therapy with significant clinical benefits for multiple tumor types. However, some patients still do not respond sufficiently to PD-1/PD-L1 targeted monotherapy. Therefore, investigating the mechanism of PD-1 blockade resistance will assist in exploring new immunotherapy strategies, controlling the progress of the disease, and thus bringing more sustainable survival benefits to patients. The tumor-immune cycle is divided into the following seven steps: the release of cancer antigens, cancer antigen presentation, priming and activation, trafficking of T cells to tumors, infiltration of T cells into tumors, recognition of cancer cells by T cells, and killing of cancer cells. Given that PD-1/PD-L1 blockade is primarily involved in step 7, any abnormalities in the previous steps may affect the efficacy of PD-1/PD-L1 inhibitors and lead to drug resistance. This review discussed the resistance mechanisms of PD-1/PD-L1 blockade in each cancer-immunity step to finding a more suitable treatment population and an optimized combination therapy to exert immunotherapy in tumor treatment to a greater extent.
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Affiliation(s)
- Yuan Zhuang
- Department of Radiation Oncology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, People's Republic of China
| | - Chang Liu
- Department of Radiation Oncology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, People's Republic of China
| | - Jiaqing Liu
- Department of Radiation Oncology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, People's Republic of China
| | - Guang Li
- Department of Radiation Oncology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, People's Republic of China
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Cao R, Ma JT, Zhang SL, Sun L, Liu Y, Zhang XY, Jing W, Huang LT, Han CB. Rational application of the first-line chemotherapy and immune checkpoint inhibitors in advanced nonsmall cell lung cancer: A meta-analysis. Cancer Med 2019; 8:5033-5046. [PMID: 31297962 PMCID: PMC6718602 DOI: 10.1002/cam4.2407] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/05/2019] [Accepted: 06/24/2019] [Indexed: 12/11/2022] Open
Abstract
Objective To compare the relative efficacy of immune checkpoint inhibitors (ICIs) or chemotherapy (CT) alone, or their combination modality in the first‐line treatment of advanced nonsmall cell lung cancer (NSCLC). Methods This meta‐analysis was performed on the eligible randomized controlled trials (RCTs) after searching web databases and meeting abstracts. The main research endpoints were the comparisons of median overall survival (mOS), the OS rate of 6 months (OSR6m), 1 year (OSR1y) and 2 years (OSR2y), median progression‐free survival (mPFS), the PFS rate of 6 months (PFSR6m) and 1‐year (PFSR1y), objective response rates (ORR), and treatment‐related adverse events (TRAEs). Results Eleven RCTs comprising 6278 cases were included. In the subgroup of programmed death‐ligand 1 (PD‐L1) ≥50%, compared with chemotherapy, the ICIs showed similar OSR6m (P > 0.05), but significantly improved efficacy in mOS, OSR1y, OSR2y, and ORR (all P < 0.05), also had less grade ≥ 3 TRAEs. Compared with pembrolizumab alone, pembrolizumab plus CT in the subgroup of PD‐L1 ≥ 50% had similar mOS, OSR6m, OSR1y, and PFSR1y (all P > 0.05), but significantly improved mPFS, PFSR6m, and ORR (all P < 0.05 for interaction). Compared with the CT group, ICIs plus CT group with PD‐L1 ≥ 50% or <1% showed significant benefit in OS, PFS, and ORR (all P < 0.05). However, in the ICIs plus CT group with 1% ≤ PD‐L1 ≤ 49%, only PFS and ORR showed significant benefit compared with CT group (all P < 0.05), but not for results of OS. Conclusions The findings support the rationale for using pembrolizumab alone in the first‐line treatment of PD‐L1 ≥ 50% advanced NSCLC due to the similar OS and lower grade ≥ 3 TRAEs. However, the combination of ICIs and chemotherapy is strongly recommended in patients with PD‐L1 ≤ 49% for significant survival benefit.
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Affiliation(s)
- Rui Cao
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jie-Tao Ma
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Shu-Ling Zhang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Li Sun
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yang Liu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiang-Yan Zhang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Wei Jing
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Le-Tian Huang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Cheng-Bo Han
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
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14
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Wang C, Qiao W, Jiang Y, Zhu M, Shao J, Ren P, Liu D, Li W. Effect of sex on the efficacy of patients receiving immune checkpoint inhibitors in advanced non-small cell lung cancer. Cancer Med 2019; 8:4023-4031. [PMID: 31165589 PMCID: PMC6639192 DOI: 10.1002/cam4.2280] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/11/2019] [Accepted: 05/13/2019] [Indexed: 02/05/2023] Open
Abstract
Immune checkpoint inhibitors (ICIs) have shown promising efficacy in the treatment of non‐small cell lung cancer (NSCLC). Sex‐associated dimorphism in immune system response is acknowledged, but the effect of patients’ sex on efficacy of ICIs as treatment in NSCLC still remains controversial. The present study was conducted to investigate the difference in efficacy of NSCLC patients receiving immune checkpoint inhibitors according to the sex. A total of 9583 patients involved 6567 men and 3016 women with advanced lung cancer from 15 randomized controlled trials were included in this study. An overall survival (OS) benefit of immune checkpoint inhibitors was illustrated in both male (HR 0.76, 95% CI 0.71‐0.82) and female (HR 0.73, 95% CI 0.58‐0.91) patients, and a progression‐free survival (PFS) benefit was also found in both men (HR 0.67, 95% CI 0.58‐0.77) and women (HR 0.73, 95% CI 0.56‐0.95) in NSCLC. Both PD‐1/PD‐L1 inhibitors alone and PD‐1/PD‐L1 plus chemotherapy significantly improved the OS and PFS in male patients. Whereas in females, PD‐1 inhibitors or monotherapy significantly benefited the OS but not the PFS, PD‐L1 inhibitors or combination therapy significantly prolonged the PFS but not the OS. No survival benefit was found in both male and female patients from the CTLA‐4 inhibitors. The current study indicated that the magnitude of survival benefit is sex‐dependent and male patients seemed to obtain more consistent and favorable outcomes from ICIs than women patients in NSCLC.
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Affiliation(s)
- Chengdi Wang
- Department of Respiratory and Critical Care Medicine, West China Medical School/West China Hospital, Sichuan University, Chengdu, China
| | - Wenliang Qiao
- Lung Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Yuting Jiang
- West China Medical School, Sichuan University, Chengdu, China
| | - Min Zhu
- Department of Respiratory and Critical Care Medicine, West China Medical School/West China Hospital, Sichuan University, Chengdu, China
| | - Jun Shao
- Department of Respiratory and Critical Care Medicine, West China Medical School/West China Hospital, Sichuan University, Chengdu, China
| | - Pengwei Ren
- Department of Clinical Research Center for Respiratory Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Dan Liu
- Department of Respiratory and Critical Care Medicine, West China Medical School/West China Hospital, Sichuan University, Chengdu, China
| | - Weimin Li
- Department of Respiratory and Critical Care Medicine, West China Medical School/West China Hospital, Sichuan University, Chengdu, China
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Wang S, Hao J, Qian C, Wang H. Tumor Spread Through Air Spaces Is a Survival Predictor in Non-Small-Cell Lung Cancer. Clin Lung Cancer 2019; 20:e584-e591. [PMID: 31230891 DOI: 10.1016/j.cllc.2019.05.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 03/20/2019] [Accepted: 05/22/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND Tumor spread through air spaces (STAS) is a newly recognized invasion pattern in non-small-cell lung cancer (NSCLC). However, the clinical application value of STAS in NSCLC remains to be clarified. We aimed to comprehensively explore the potential role of STAS as a prognostic indicator in NSCLC. PATIENTS AND METHODS A systematic search was performed in PubMed, Embase, Cochrane Library, and Web of Science until April 15, 2018. A quantitative meta-analysis was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. RESULTS A total of 3231 patients from 8 studies were included. STAS was observed in 1204 cases (37.3%). A significant association was found between STAS and poor progression-free survival (PFS) (hazard ratio [HR], 1.789; P < .001) and overall survival (OS; HR, 1.488; P < .001). STAS was also an independent prognostic factor for PFS (HR, 1.632; P < .001) and OS (HR, 1.475; P < .001) without obvious heterogeneity. Subgroup analyses and meta-regression showed histology type, tumor, node, metastases (TNM) stage, publication year, sample size, region, and quality score did not alter prognostic value of STAS. Tumor STAS was associated with male sex (P < .001), history of smoking (P < .001), tumor budding (P = .038), vascular invasion (P < .001), lymphatic invasion (P < .001), pleural invasion (P < .001), T stage (P < .001), N stage (P < .001), and TNM stage (P < .001). The publication bias was observed. After adjustment using a nonparametric "trim-and-fill" method, corrected HRs had no significant change. CONCLUSION Tumor STAS is associated with clinicopathologically aggressive features and could be exploited as a novel prognostic predictor in NSCLC.
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Affiliation(s)
- Shuai Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jiatao Hao
- General Practice Department, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Cheng Qian
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Hao Wang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
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