151
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Gerdol M, Dishnica K, Giorgetti A. Emergence of a recurrent insertion in the N-terminal domain of the SARS-CoV-2 spike glycoprotein. Virus Res 2022; 310:198674. [PMID: 35021068 PMCID: PMC8743576 DOI: 10.1016/j.virusres.2022.198674] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 01/06/2022] [Accepted: 01/07/2022] [Indexed: 12/12/2022]
Abstract
Tracking the evolution of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) through genomic surveillance programs is undoubtedly one of the key priorities in the current pandemic situation. Although the genome of SARS-CoV-2 acquires mutations at a slower rate compared with other RNA viruses, evolutionary pressures derived from the widespread circulation of SARS-CoV-2 in the human population have progressively favored the global emergence, though natural selection, of several variants of concern that carry multiple non-synonymous mutations in the spike glycoprotein. These are often placed in key sites within major antibody epitopes and may therefore confer resistance to neutralizing antibodies, leading to partial immune escape, or otherwise compensate infectivity deficits associated with other non-synonymous substitutions. As previously shown by other authors, several emerging variants carry recurrent deletion regions (RDRs) that display a partial overlap with antibody epitopes located in the spike N-terminal domain (NTD). Comparatively, very little attention had been directed towards spike insertion mutations prior to the emergence of the B.1.1.529 (omicron) lineage. This manuscript describes a single recurrent insertion region (RIR1) in the N-terminal domain of SARS-CoV-2 spike protein, characterized by at least 49 independent acquisitions of 1-8 additional codons between Val213 and Leu216 in different viral lineages. Even though RIR1 is unlikely to confer antibody escape, its association with two distinct formerly widespread lineages (A.2.5 and B.1.214.2), with the quickly spreading omicron and with other VOCs and VOIs warrants further investigation concerning its effects on spike structure and viral infectivity.
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Affiliation(s)
- Marco Gerdol
- University of Trieste, Department of Life Sciences, 34127 Trieste, Italy.
| | - Klevia Dishnica
- University of Verona, Department of Biotechnology, 37134 Verona, Italy
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152
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Chen Y, Zhao M, Zhang L, Shen D, Xu X, Yi Q, Tang L. SNF5, a core subunit of SWI/SNF complex, regulates melanoma cancer cell growth, metastasis, and immune escape in response to matrix stiffness. Transl Oncol 2022; 17:101335. [PMID: 34999540 PMCID: PMC8749166 DOI: 10.1016/j.tranon.2021.101335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 12/28/2021] [Indexed: 11/18/2022] Open
Abstract
Increased stiffness of the extracellular matrix is an important hallmark of melanoma development and progression, but its regulatory role and related mechanisms remain unclear. We adapted polydimethylsiloxane (PDMS)-micropillar-based matrix platform and investigated the effect of matrix stiffness on the proliferation, epithelial-mesenchymal transition (EMT), and immune escape of melanoma cells. We observed a stiff matrix enhanced cell proliferation, EMT, and immune escape of A375 cells. Furthermore, the expression of SNF5 on the stiffer matrix was higher than that on the softer matrix. Next, we investigated whether SNF5 is an important transducer in response to matrix stiffness. Our results revealed that knockdown of SNF5 significantly decreased stiff matrix-induced activation of cell proliferation, EMT and immune escape. Meanwhile, the overexpression of SNF5 showed its ability to increase cell proliferation, invasion and immune escape by activating the STAT-3 pathway in vitro. Furthermore, SNF5 deficiency elevated the level of tumor-infiltrating CD8+T cells and decreased the number of PD-L1 positive cells in vivo. Together, our findings suggested that stiffer substrate enhanced melanoma development by upregulating SNF5 expression, and SNF5 is a key mediator of stiffer matrix-induced immune evasion of melanoma cancer cells.
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Affiliation(s)
- Ying Chen
- Key Laboratory of Biorheological Science and Technology, Ministlry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Meilian Zhao
- Key Laboratory of Biorheological Science and Technology, Ministlry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Lu Zhang
- Key Laboratory of Biorheological Science and Technology, Ministlry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Dongliang Shen
- Key Laboratory of Biorheological Science and Technology, Ministlry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Xichao Xu
- Key Laboratory of Biorheological Science and Technology, Ministlry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Qian Yi
- Department of Physiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Liling Tang
- Key Laboratory of Biorheological Science and Technology, Ministlry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China.
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153
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Li P, Ren X, Zheng Y, Sun J, Ye G. Tumor promoting effect of circ_002172 associates with induced immune escape in breast cancer via the miR-296-5p/CXCL12 axis. Int Immunopharmacol 2022; 106:108530. [PMID: 35240495 DOI: 10.1016/j.intimp.2022.108530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 11/05/2022]
Abstract
Comprehending the biology of tumorigenesis needs identification of determinants of the immune reaction during cancer development. This study intends to illustrate the mechanistic actions of a bioinformatically predicted circRNA circ_002172 in cytotoxic T lymphocytes (CTL) infiltration and escape of breast cancer (BC) from immunological destruction. Expression patterns of circ_002172, miR-296-5p, and CXCL12 were determined in BC tissues and cells. Effects of circ_002172, miR-296-5p, and CXCL12 on cell viability, migration, and invasion were examined through artificial modulation of their expression. The role of circ_002172 and CXCL12 on tumorigenesis was validated in subcutaneously transplanted and orthotopically transplanted tumors in nude mice. Upregulation of circ_002172 and CXCL12 and downregulation of miR-296-5p occurred in BC tissues and cells. Circ_002172 promoted the oncogenic phenotypes of BC cells in vitro and growth of tumors in vivo, which was reversed by knockdown of CXCL12 expression. Circ_002172, as a miR-296-5p sponge, upregulated expression CXCL12. Moreover, Ectopic expression of circ_002172 inhibited cytotoxic T lymphocytes (CTL) infiltration to promote the immune escape of BC. In conclusion, the tumor-promoting role of circ_002172 in BC was achieved by inducing immune escape via the miR-296-5p/CXCL12 axis.
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Affiliation(s)
- Pengfei Li
- Department of General Surgery, Huaian Tumor Hospital & Huaian Hospital of Huaian City, Huaian 223200, PR China; Department of Central Laboratory, Huaian Tumor Hospital & Huaian Hospital of Huaian City, Huaian 223200, PR China
| | - Xiangshun Ren
- Department of General Surgery, Huaian Tumor Hospital & Huaian Hospital of Huaian City, Huaian 223200, PR China
| | - Yuanyuan Zheng
- Department of Central Laboratory, Huaian Tumor Hospital & Huaian Hospital of Huaian City, Huaian 223200, PR China
| | - Jinming Sun
- Department of General Surgery, Jiangdu People's Hospital of Yangzhou, Yangzhou 225200, PR China
| | - Gang Ye
- Department of General Surgery, Jiangdu People's Hospital of Yangzhou, Yangzhou 225200, PR China.
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154
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Worsley CM, Veale RB, Mayne ES. The acidic tumour microenvironment: Manipulating the immune response to elicit escape. Hum Immunol 2022; 83:399-408. [PMID: 35216847 DOI: 10.1016/j.humimm.2022.01.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 01/25/2022] [Accepted: 01/25/2022] [Indexed: 12/18/2022]
Abstract
The success of cancer treatment relies on the composition of the tumour microenvironment which is comprised of tumour cells, blood vessels, stromal cells, immune cells, and extracellular matrix components. Barriers to effective cancer treatment need to be overcome, and the acidic microenvironment of the tumour provides a key target for treatment. This review intends to provide an overview of the effects that low extracellular pH has on components of the tumour microenvironment and how they contribute to immune escape. Further, potential therapeutic targets will be discussed.
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Affiliation(s)
- Catherine M Worsley
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, South Africa; Department of Haematology and Molecular Medicine, Faculty of Health Sciences, University of the Witwatersrand, South Africa; National Health Laboratory Service, South Africa.
| | - Rob B Veale
- School of Molecular and Cell Biology, Faculty of Science, University of the Witwatersrand, South Africa
| | - Elizabeth S Mayne
- Department of Haematology and Molecular Medicine, Faculty of Health Sciences, University of the Witwatersrand, South Africa; Department of Immunology Faculty of Health Sciences, University of the Witwatersrand, South Africa; Division of Immunology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, South Africa
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155
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Swamydas M, Murphy EV, Ignatz-Hoover JJ, Malek E, Driscoll JJ. Deciphering mechanisms of immune escape to inform immunotherapeutic strategies in multiple myeloma. J Hematol Oncol 2022; 15:17. [PMID: 35172851 PMCID: PMC8848665 DOI: 10.1186/s13045-022-01234-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/03/2022] [Indexed: 12/11/2022] Open
Abstract
Multiple myeloma is an incurable cancer characterized by the uncontrolled growth of malignant plasma cells nurtured within a permissive bone marrow microenvironment. While patients mount numerous adaptive immune responses directed against their disease, emerging data demonstrate that tumor intrinsic and extrinsic mechanisms allow myeloma cells to subvert host immunosurveillance and resist current therapeutic strategies. Myeloma downregulates antigens recognized by cellular immunity and modulates the bone marrow microenvironment to promote uncontrolled tumor proliferation, apoptotic resistance, and further hamper anti-tumor immunity. Additional resistance often develops after an initial clinical response to small molecules, immune-targeting antibodies, immune checkpoint blockade or cellular immunotherapy. Profound quantitative and qualitative dysfunction of numerous immune effector cell types that confer anti-myeloma immunity further supports myelomagenesis, disease progression and the emergence of drug resistance. Identification of tumor intrinsic and extrinsic resistance mechanisms may direct the design of rationally-designed drug combinations that prevent or overcome drug resistance to improve patient survival. Here, we summarize various mechanisms of immune escape as a means to inform novel strategies that may restore and improve host anti-myeloma immunity.
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Affiliation(s)
| | - Elena V Murphy
- Department of Biochemistry, Case Western Reserve University, Cleveland, OH, USA
| | - James J Ignatz-Hoover
- Seidman Cancer Center, University Hospitals, Cleveland, OH, USA.,Case Comprehensive Cancer Center, Hematopoietic and Immune Cancer Biology Program, Cleveland, OH, USA
| | - Ehsan Malek
- Seidman Cancer Center, University Hospitals, Cleveland, OH, USA.,Case Comprehensive Cancer Center, Hematopoietic and Immune Cancer Biology Program, Cleveland, OH, USA
| | - James J Driscoll
- Seidman Cancer Center, University Hospitals, Cleveland, OH, USA. .,Case Comprehensive Cancer Center, Hematopoietic and Immune Cancer Biology Program, Cleveland, OH, USA.
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156
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Singh D, Khan MA, Siddique HR. Specific targeting of cancer stem cells by immunotherapy: A possible stratagem to restrain cancer recurrence and metastasis. Biochem Pharmacol 2022; 198:114955. [PMID: 35181312 DOI: 10.1016/j.bcp.2022.114955] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/09/2022] [Accepted: 02/09/2022] [Indexed: 02/07/2023]
Abstract
Cancer stem cells (CSCs), the tumor-initiating cells playing a crucial role in cancer progression, recurrence, and metastasis, have the intrinsic property of self-renewal and therapy resistance. The tumorigenic properties of these cells include generation of cellular heterogeneity and immuno-suppressive tumor microenvironment (TME), conferring them the capability to resist a variety of anti-cancer therapeutics. Further, CSCs possess several unique immunological properties that help them escape recognition by the innate and adaptive immune system and shape a TME into a pro-tumorigenic and immunosuppressive landscape. In this context, immunotherapy is considered one of the best therapeutic options for eliminating CSCs to halt cancer recurrence and metastasis. In this review, we discuss the various immunomodulatory properties of CSCs and the interaction of CSCs with the immune system enabling immune evasion. In addition, we also highlight the present research update on immunotherapeutic targeting of CSCs and the possible further scope of research on this topic. We believe that a deeper understanding of CSCs' immunological properties and the crosstalk between CSCs and the immune system can develop better innovative immune-therapeutics and enhance the efficacy of current therapy-resistant cancer treatments.
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Affiliation(s)
- Deepti Singh
- Molecular Cancer Genetics & Translational Research Lab, Section of Genetics, Department of Zoology, Aligarh Muslim University, Aligarh 202002, India
| | - Mohammad Afsar Khan
- Molecular Cancer Genetics & Translational Research Lab, Section of Genetics, Department of Zoology, Aligarh Muslim University, Aligarh 202002, India
| | - Hifzur R Siddique
- Molecular Cancer Genetics & Translational Research Lab, Section of Genetics, Department of Zoology, Aligarh Muslim University, Aligarh 202002, India.
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157
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Zhou X, Zou L, Liao H, Luo J, Yang T, Wu J, Chen W, Wu K, Cen S, Lv D, Shu F, Yang Y, Li C, Li B, Mao X. Abrogation of HnRNP L enhances anti-PD-1 therapy efficacy via diminishing PD-L1 and promoting CD8 + T cell-mediated ferroptosis in castration-resistant prostate cancer. Acta Pharm Sin B 2022; 12:692-707. [PMID: 35256940 PMCID: PMC8897216 DOI: 10.1016/j.apsb.2021.07.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/20/2021] [Accepted: 07/09/2021] [Indexed: 01/18/2023] Open
Abstract
Owing to incurable castration-resistant prostate cancer (CRPC) ultimately developing after treating with androgen deprivation therapy (ADT), it is vital to devise new therapeutic strategies to treat CRPC. Treatments that target programmed cell death protein 1 (PD-1) and programmed death ligand-1 (PD-L1) have been approved for human cancers with clinical benefit. However, many patients, especially prostate cancer, fail to respond to anti-PD-1/PD-L1 treatment, so it is an urgent need to seek a support strategy for improving the traditional PD-1/PD-L1 targeting immunotherapy. In the present study, analyzing the data from our prostate cancer tissue microarray, we found that PD-L1 expression was positively correlated with the expression of heterogeneous nuclear ribonucleoprotein L (HnRNP L). Hence, we further investigated the potential role of HnRNP L on the PD-L1 expression, the sensitivity of cancer cells to T-cell killing and the synergistic effect with anti-PD-1 therapy in CRPC. Indeed, HnRNP L knockdown effectively decreased PD-L1 expression and recovered the sensitivity of cancer cells to T-cell killing in vitro and in vivo, on the contrary, HnRNP L overexpression led to the opposite effect in CRPC cells. In addition, consistent with the previous study, we revealed that ferroptosis played a critical role in T-cell-induced cancer cell death, and HnRNP L promoted the cancer immune escape partly through targeting YY1/PD-L1 axis and inhibiting ferroptosis in CRPC cells. Furthermore, HnRNP L knockdown enhanced antitumor immunity by recruiting infiltrating CD8+ T cells and synergized with anti-PD-1 therapy in CRPC tumors. This study provided biological evidence that HnRNP L knockdown might be a novel therapeutic agent in PD-L1/PD-1 blockade strategy that enhanced anti-tumor immune response in CRPC.
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Key Words
- ADT, androgen deprivation therapy
- Anti-PD-1 therapy
- CRPC, castration-resistant prostate cancer
- Castration-resistant prostate cancer
- DMSO, dimethyl sulfoxide
- ELISA, enzyme-linked immunosorbent assay
- FBS, fetal bovine serum
- Fer-1, ferrostatin-1
- Ferroptosis
- GSH, glutathione
- HnRNP L
- HnRNP L, heterogeneous nuclear ribonucleoprotein L
- IL, interleukin
- INF-γ, interferon gamma
- Immune checkpoint blockade
- Immune escape
- PD-1, programmed cell death protein 1
- PD-L1
- PD-L1, programmed death ligand1
- ROS, reactive oxygen species
- STAT, signal transducer and activator of transcription
- YY1
- qRT-PCR, quantitative reverse transcription polymerase chain reaction
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Affiliation(s)
- Xumin Zhou
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Libin Zou
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Hangyu Liao
- Second Department of Hepatobiliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Junqi Luo
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Taowei Yang
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Jun Wu
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Wenbin Chen
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Kaihui Wu
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Shengren Cen
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Daojun Lv
- Department of Urology, Minimally Invasive Surgery Center, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Fangpeng Shu
- Department of Urology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Yu Yang
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Chun Li
- Nursing Department, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
- Corresponding authors. Tel.: +86 20 62782725; fax: +86 20 62782725.
| | - Bingkun Li
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
- Corresponding authors. Tel.: +86 20 62782725; fax: +86 20 62782725.
| | - Xiangming Mao
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
- Corresponding authors. Tel.: +86 20 62782725; fax: +86 20 62782725.
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158
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Ding Y, Yan Y, Dong Y, Xu J, Su W, Shi W, Zou Q, Yang X. NLRP3 promotes immune escape by regulating immune checkpoints: A pan-cancer analysis. Int Immunopharmacol 2022; 104:108512. [PMID: 35026655 DOI: 10.1016/j.intimp.2021.108512] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 12/21/2021] [Accepted: 12/29/2021] [Indexed: 11/30/2022]
Abstract
NLRP3 plays a pathogenic role in tumorigenesis by regulating innate and acquired immunity, apoptosis, differentiation, and intestinal microbes in tumors. Our research aimed to investigate the role of NLRP3 in pan-cancers based on multi-omics data in the TCGA database. Most types of tumors showed increased expression of NLRP3. Among them, the overexpressed NLRP3 in liver hepatocellular carcinoma (LIHC) and ovarian cancer (OV) indicated worse overall survival (OS). Further analysis also confirmed overexpressed NLRP3 in colon cancer (COAD) indicated a high probability of microsatellite instability (MSI) and low tumor mutational burden (TMB), which indicated a better response to immune checkpoint inhibitors (ICIs). Interestingly, overexpression of NLRP3 was closely related to high infiltration of immune cells (T cells, B cells, etc.) and overexpressed immune checkpoints (PD-1, PD-L1, LAG3, etc.). These results demonstrated NLRP3 promoted immune escape in cancers. Finally, we investigated the expression of various immune checkpoints by treating NLRP3 inhibitor MCC950 during the co-culture of peripheral blood mononuclear cells (PBMC) and LIHC cell line Hep3B. MCC950 significantly repressed the expression of PD-L1 and LAG3, and promoted the apoptosis rate of Hep3B. In conclusion, our research demonstrated the role of NLRP3 in pan-cancer, especially in LIHC. Inhibition of NLRP3 promoted the killing effect of T cells to cancer cells by repressing the expression of immune checkpoints.
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Affiliation(s)
- Yue Ding
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China
| | - Yilin Yan
- Hangzhou Children's Welfare Institute, China
| | - Yihui Dong
- Department of Paediatrics, Qingdao Eighth People's Hospital, Qingdao 266100, China
| | - Jingyuan Xu
- Department of Gastroenterology, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China
| | - Wei Su
- Department of Oncology, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China
| | - Weijun Shi
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China.
| | - Qi Zou
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China.
| | - Xiaoping Yang
- Department of Hepatobiliary Pancreatic Surgery, the First Hospital of Ningbo City, Ningbo 315010, China.
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159
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Chen C, Huang Z, Huang P, Li K, Zeng J, Wen Y, Li B, Zhao J, Wu P. Urogenital Microbiota:Potentially Important Determinant of PD-L1 Expression in Male Patients with Non-muscle Invasive Bladder Cancer. BMC Microbiol 2022; 22:7. [PMID: 34983384 PMCID: PMC8725255 DOI: 10.1186/s12866-021-02407-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 11/29/2021] [Indexed: 02/06/2023] Open
Abstract
Background Urogenital microbiota may be associated with the recurrence of bladder cancer, but the underlying mechanism remains unclear. The notion that microbiota can upregulate PD-L1 expression in certain epithelial tumors to promote immune escape has been demonstrated. Thus, we hypothesized that the urogenital microbiota may be involved in the recurrence and progression of non-muscle invasive bladder cancer (NMIBC) by upregulating the PD-L1 expression. To test this hypothesis, we investigated the relationship between urogenital microbial community and PD-L1 expression in male patients with NMIBC. Results 16S rRNA gene sequencing was performed to analyse the composition of urogenital microbiota, and the expression of PD-L1 in cancerous tissues was detected by immunohistochemistry. The subjects (aged 43–79 years) were divided into PD-L1-positive group (Group P, n = 9) and PD-L1-negative group (Group N, n = 19) respectively based on their PD-L1 immunohistochemical results. No statistically significant differences were found in the demographic characteristics between group P and N. We observed that group P exhibited higher species richness (based on Observed species and Ace index, both P < 0.05). Furthermore, subgroup analysis showed that the increase in number of PD-L1 positive cells was accompanied by increased richness of urogenital microbiota. Significantly different composition of urogenital microbiota was found between group P and group N (based on weighted Unifrac and unweighted Unifrac distances metric, both P < 0.05). Enrichment of some bacterial genera (e.g., Leptotrichia, Roseomonas, and Propionibacterium) and decrease of some bacterial genera (e.g., Prevotella and Massilia) were observed in group P as compared with group N. These findings indicated that these genera may affect the expression of PD-L1 through some mechanisms to be studied. Conclusion Our study provided for the first time an overview of the association between urogenital microbiota and PD-L1 expression in male patients with NMIBC, indicating that urogenital microbiota was an important determinant of PD-L1 expression in male NMIBC patients. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02407-8.
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Affiliation(s)
- Chunxiao Chen
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zehai Huang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Pengcheng Huang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Kun Li
- The third hospital of mianyang, Sichuan Province, China
| | - Jiarong Zeng
- Department of Urology, Meizhou People's Hospital, Meizhou, China
| | | | - Biao Li
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jie Zhao
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China.
| | - Peng Wu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China. .,Clinical Microbiota Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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160
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Smit DJ, Jücker M. AKT Isoforms as a Target in Cancer and Immunotherapy. Curr Top Microbiol Immunol 2022; 436:409-436. [PMID: 36243855 DOI: 10.1007/978-3-031-06566-8_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Over the past years, targeted therapies have received tremendous attention in cancer therapy. One of the most frequently targeted pathways is the PI3K/AKT/mTOR signaling pathway that regulates crucial cellular processes including proliferation, survival, and migration. In a wide variety of cancer entities, the PI3K/AKT/mTOR signaling pathway was found to be a critical driver of disease progression, indicating a noteworthy target in cancer therapy. This chapter focuses on targeted therapies against AKT, which is a key enzyme within the PI3K/AKT/mTOR pathway. Although the three different isoforms of AKT, namely AKT1, AKT2, and AKT3, have a high homology, the isoforms exhibit different biological functions. Recently, direct inhibitors against all AKT isoforms as well as selective inhibitors against specific AKT isoforms have been extensively investigated in preclinical work as well as in clinical trials to attenuate proliferation of cancer cells. While no AKT inhibitor has been approved by the FDA for cancer therapy to date, AKT still plays a crucial role in a variety of treatment strategies including immune checkpoint inhibition. In this chapter, we summarize the status of AKT inhibitors either targeting all or specific AKT isoforms. Furthermore, we explain the role of AKT signaling in direct inhibition of tumor cell growth as well as in immune cells and immune checkpoint inhibition.
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Affiliation(s)
- Daniel J Smit
- Institute of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Manfred Jücker
- Institute of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany.
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161
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Abstract
Metastasis is a complex process that has been historically difficult to model in culture. Host immune responses play critical roles in restraining and promoting metastatic tumor cells. Here we describe a method of 3D organotypic co-culture of natural killer cells and tumor organoids to capture interactions between the two cellular populations. These assays can be used to model key aspects of metastatic biology and to screen for the effectiveness of agents that stimulate natural killer cell cytotoxicity.
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Affiliation(s)
- Isaac S Chan
- Division of Hematology and Oncology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Andrew J Ewald
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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162
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Dong W, Zhang D, Zhu A, Hu Y, Li W. High concentration of Dezocine induces immune escape of lung cancer and promotes glucose metabolism through up-regulating PD-L1 and activating NF-κB pathway. Curr Mol Med 2021; 22:919-928. [PMID: 34951362 DOI: 10.2174/1566524022666211222155118] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 10/07/2021] [Accepted: 11/11/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Dezocine is an opioid analgesic that can affect the immune system. Here, we explored the synergy of high concentration of Dezocine and Programmed death-ligand 1 (PD-L1) with regards to immune escape and glucose metabolism in lung cancer (LC). METHODS PD-L1 level in human LC cell lines was determined and the influence of Dezocine at different concentrations for the proliferation of LC cells was identified. Next, LC cells were transfected to alter PD-L1 level, and exposed to Dezocine at 8 μg/mL to explore their effects on cell proliferation, production of interferon-γ (IFN-γ), contents of glucose, lactate and NADPH/NADP+ and activation of the nuclear factor-κB (NF-κB) pathway. RESULTS PD-L1 level was increased in LC cells and Dezocine (8 μg/mL) impaired the proliferation of LC cells. Down-regulating PD-L1 inhibited cell proliferation, enhanced production of IFN-γ and reduced the contents of glucose, lactate and NADPH/NADP+ while up-regulating PD-L1 caused the opposite results. Dezocine (8 μg/mL) induced immune escape and glucose metabolism in LC, and Dezocine-induced effects were reversed by down-regulating PD-L1. Dezocine (8 μg/mL) up-regulated PD-L1 by activating the NF-κB pathway. CONCLUSION Dezocine at 8 μg/mL promotes immune escape and glucose metabolism in LC through up-regulating PD-L1 and activating the NF-κB pathway.
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Affiliation(s)
- Weiping Dong
- Department of Anesthesiology, Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong. China
| | - Dong Zhang
- Department of Health Respiratory, Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong. China
| | - Aiyun Zhu
- Department of Health Urology, Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong. China
| | - Yanli Hu
- Department of Health Urology, Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong. China
| | - Wei Li
- Department of Anesthesiology, Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong. China
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Genebrier S, Tarte K. [Perspectives for the evolution and use of CAR-T cells]. Bull Cancer 2021; 108:S18-S27. [PMID: 34920801 DOI: 10.1016/j.bulcan.2021.04.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/06/2021] [Accepted: 04/17/2021] [Indexed: 11/20/2022]
Abstract
CAR-T cells have recently made a stunning entry on the arena of immunotherapy of B-cell lymphomas. This new treatment approach represents the culmination of 30 years of efforts to understand the role of T cells in the antitumor response. However, this technology is still in its infancy and suffers from a number of limitations. Many areas for improvement, based in particular on the possibilities of additional genetic manipulations of CAR-T cells, aim at reducing their toxicity, increasing their persistence in vivo, preventing the risk of tumor escape, recruiting other immune effectors, or extending their application to other cancers. Further studies of the dynamic interaction between the patient and these live drugs will allow elucidating the mechanisms determining the antitumor response in this context and thus developing more efficiently the future CAR-T cells.
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Affiliation(s)
- Steve Genebrier
- Université Rennes 1, UMR U1236, inserm, EFS Bretagne, rue Pierre Jean Gineste, 35000 Rennes, France; CHU de Rennes ; Pôle Biologie, 2, rue Henri Le Guilloux, 35033 Rennes cedex 9, France
| | - Karin Tarte
- Université Rennes 1, UMR U1236, inserm, EFS Bretagne, rue Pierre Jean Gineste, 35000 Rennes, France; CHU de Rennes ; Pôle Biologie, 2, rue Henri Le Guilloux, 35033 Rennes cedex 9, France.
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164
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Du XZ, Wen B, Liu L, Wei YT, Zhao K. Role of immune escape in different digestive tumours. World J Clin Cases 2021; 9:10438-10450. [PMID: 35004976 PMCID: PMC8686128 DOI: 10.12998/wjcc.v9.i34.10438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 08/15/2021] [Accepted: 10/18/2021] [Indexed: 02/06/2023] Open
Abstract
A counterbalance between immune cells and tumour cells is key to fighting tumours, and immune escape is an important mechanism for the survival of tumour cells in the body. Tumor cells and their cytokines impair the activity of T cells, NK cells, macrophages and other immune cells through various ways, and change the expression of their own surface antigens so as to avoid the clearance of the immune system. Changes in major histocompatibility complex molecules, high expression of programmed death-ligand 1, and the presence of immunosuppressive cells in the tumor microenvironment (TME) are main means by which tumors impair the function of immune cells. During the development of tumours of the digestive system, different mechanisms acting on tumour cells, the TME, and immune cells lead to immune escape and promote tumour progression. In this paper, the mechanisms of immune escape in tumour cells of the digestive system are reviewed to provide a theoretical basis for the immunotherapy of gastrointestinal tumours.
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Affiliation(s)
- Xin-Zhu Du
- Department of Gastroenterology, The Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
| | - Bin Wen
- Department of Gastroenterology, The Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
| | - Lin Liu
- Department of Gastroenterology, The Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
| | - Ying-Ting Wei
- Department of Gastroenterology, The Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
| | - Kui Zhao
- Department of Gastroenterology, The Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
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Zhang W, Xin J, Lai J, Zhang W. LncRNA LINC00184 promotes docetaxel resistance and immune escape via miR-105-5p/PD-L1 axis in prostate cancer. Immunobiology 2021; 227:152163. [PMID: 34896914 DOI: 10.1016/j.imbio.2021.152163] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/16/2021] [Accepted: 12/02/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Docetaxel (DTX) resistance is a common factor in metastatic prostate cancer (PC) chemotherapy that leads to treatment failure. Because lncRNA is involved in a variety of regulatory processes in tumor progression, this study aimed to explore the function and mechanism of LINC00184 in docetaxel resistance of PC. METHODS Two PC cell lines and their docetaxel resistant cell lines (DU145/DTX and PC3/DTX) were used. The expression of LINC00184 in both cell lines and PC patient samples were evaluated. SiRNA knocking down was used to test the function of LINC00184 in proliferation and colony formation. Interaction between LINC00184 and its target miR-105-5p, as well as miR-105-5p and PD-L1 was checked by luciferase reporter assay and RNA pull-down assay. PC cell line and CD8 + T cell co-culture system was established, miR-105-5p inhibitor was co-transfected with LINC00184 siRNA to investigate the underline mechanism. RESULTS LINC00184 was found to be associated with docetaxel resistance and adverse prognosis of prostate cancer. It regulated docetaxel resistance and T-cell-mediated immune response in prostate cancer cells. LINC00184 was induced by adsorption of miR-105-5p and negatively regulated it, subsequently inhibited the expression level of PD-L1. CONCLUSIONS LINC00184 promoted docetaxel resistance and immune escape in prostate cancer cells by adsorption of miR-105-5p, resulted in upregulation of the expression of PD-L1. LINC00184 could possibly be considered as a potential target for treatment in prostate cancer patients with docetaxel-resistance.
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Affiliation(s)
- Wei Zhang
- Department of Urology, Quanzhou First Hospital Affiliated to Fujian Medical University, No. 248-252 East Street, Licheng District, Quanzhou 362000, People's Republic of China
| | - Jun Xin
- Department of Urology, Quanzhou First Hospital Affiliated to Fujian Medical University, No. 248-252 East Street, Licheng District, Quanzhou 362000, People's Republic of China
| | - Jinjin Lai
- Department of Urology, Quanzhou First Hospital Affiliated to Fujian Medical University, No. 248-252 East Street, Licheng District, Quanzhou 362000, People's Republic of China
| | - Wenbin Zhang
- Department of Urology, Quanzhou First Hospital Affiliated to Fujian Medical University, No. 248-252 East Street, Licheng District, Quanzhou 362000, People's Republic of China.
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Hu J, Wei XY, Xiang J, Peng P, Xu FL, Wu K, Luo FY, Jin AS, Fang L, Liu BZ, Wang K, Tang N, Huang AL. Reduced neutralization of SARS-CoV-2 B.1.617 variant by convalescent and vaccinated sera. Genes Dis 2021; 9:1290-1300. [PMID: 34877393 PMCID: PMC8639289 DOI: 10.1016/j.gendis.2021.11.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 09/26/2021] [Accepted: 11/05/2021] [Indexed: 01/10/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The Spike protein that mediates coronavirus entry into host cells is a major target for COVID-19 vaccines and antibody therapeutics. However, multiple variants of SARS-CoV-2 have emerged, which may potentially compromise vaccine effectiveness. Using a pseudovirus-based assay, we evaluated SARS-CoV-2 cell entry mediated by the viral Spike B.1.617 and B.1.1.7 variants. We also compared the neutralization ability of monoclonal antibodies from convalescent sera and neutralizing antibodies (NAbs) elicited by CoronaVac (inactivated vaccine) and ZF2001 (RBD-subunit vaccine) against B.1.617 and B.1.1.7 variants. Our results showed that, compared to D614G and B.1.1.7 variants, B.1.617 shows enhanced viral entry and membrane fusion, as well as more resistant to antibody neutralization. These findings have important implications for understanding viral infectivity and for immunization policy against SARS-CoV-2 variants.
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Affiliation(s)
- Jie Hu
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, PR China
| | - Xiao-Yu Wei
- Yong-Chuan Hospital, Chongqing Medical University, Chongqing 402177, PR China
| | - Jin Xiang
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, PR China
| | - Pai Peng
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, PR China
| | - Feng-Li Xu
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, PR China
| | - Kang Wu
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, PR China
| | - Fei-Yang Luo
- Department of Immunology, College of Basic Medicine, Chongqing Medical University, Chongqing 400016, PR China
| | - Ai-Shun Jin
- Department of Immunology, College of Basic Medicine, Chongqing Medical University, Chongqing 400016, PR China
| | - Liang Fang
- Yong-Chuan Hospital, Chongqing Medical University, Chongqing 402177, PR China
| | - Bei-Zhong Liu
- Yong-Chuan Hospital, Chongqing Medical University, Chongqing 402177, PR China
| | - Kai Wang
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, PR China
| | - Ni Tang
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, PR China
| | - Ai-Long Huang
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, PR China
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Deng Z, Teng YJ, Zhou Q, Ouyang ZG, Hu YX, Long HP, Hu MJ, Mei S, Lin FX, Dai XJ, Zhang BY, Feng T, Tian XF. Shuyu pills inhibit immune escape and enhance chemosensitization in hepatocellular carcinoma. World J Gastrointest Oncol 2021; 13:1725-1740. [PMID: 34853646 PMCID: PMC8603453 DOI: 10.4251/wjgo.v13.i11.1725] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/18/2021] [Accepted: 09/17/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is characterized by dysregulation of the immune microenvironment and the development of chemoresistance. Specifically, expression of the programmed cell death protein 1 (PD-1)/programmed cell death 1 ligand 1 (PD-L1) axis, an immune checkpoint, may lead to tumour immune escape, resulting in disease progression. The latest research shows that tumour immune escape may be caused by the upregulation of PD-L1 mediated by hypoxia-inducible factor-1 alpha (HIF-1α), and simultaneous inhibition of HIF-1α and PD-L1 has the potential to enhance the host’s antitumour immunity. Moreover, inhibition of the PD-1/PD-L1 axis may mitigate tumour chemoresistance. Shuyu pills (SYPs) contain immunity-enhancing and antitumour components, making them a potential HCC treatment.
AIM To investigate the efficacy of SYPs for HCC treatment via simultaneous HIF-1α and PD-L1 inhibition and the mechanism involved.
METHODS A subcutaneous xenograft tumour model was first established in BALB/c nude mice by the subcutaneous injection of 1 × 107 SMMC-7721 cells. Male mice (male, 5 weeks old; n = 24) were then randomly divided into the following four groups (n = 6): Control (0.9% normal saline), SYP (200 mg/kg), SYP + cisplatin (DDP) (200 mg/kg + 5 mg/kg DDP weekly via intraperitoneal injection), and DDP (5 mg/kg cisplatin weekly via intraperitoneal injection). The dose of saline or SYPs for the indicated mouse groups was 0.2 mL/d via intragastric administration. The tumour volumes and body weights of the mice were measured every 2 d. The mice were euthanized by cervical dislocation after 14 d of continuous treatment, and the xenograft tissues were excised and weighed. Western blot assays were used to measure the protein expression of HIF-1α, PD1, PD-L1, CD4+ T cells, and CD8+ T cells in HCC tumours from mice. Quantitative reverse transcription polymerase chain reaction was used for real-time quantitative detection of PD-1, PD-L1, and HIF-1α mRNA expression. An immunofluorescence assay was conducted to examine the expression of CD4+ T cells and CD8+ T cells.
RESULTS Compared to mice in the control group, those in the SYP and SYP + DDP groups exhibited reduced tumour volumes and tumour weights. Moreover, the protein and mRNA expression levels of the oncogene HIF1α and that of the negative immunomodulatory factors PD-1 and PD-L1 were decreased in both the SYP and SYP + DDP groups, with the decrease effects being more prominent in the SYP + DDP group than in the SYP group (HIF-1α protein: Control vs SYP, P = 0.0129; control vs SYP + DDP, P = 0.0004; control vs DDP, P = 0.0152, SYP + DDP vs DDP, P = 0.0448; HIF-1α mRNA: control vs SYP, P = 0.0009; control vs SYP + DDP, P < 0.0001; control vs DDP, P = 0.0003, SYP vs SYP + DDP, P = 0.0192. PD-1 protein: Control vs SYP, P = 0.0099; control vs SYP + DDP, P < 0.0001, SPY vs SYP + DDP, P = 0.0009; SYP + DDP vs DDP, P < 0.0001; PD-1 mRNA: control vs SYP, P = 0.0002; control vs SYP + DDP, P < 0.0001; control vs DDP, P = 0.0003, SPY vs SYP + DDP, P = 0.0003; SYP + DDP vs DDP, P = 0.0002. PD-L1 protein: control vs SYP, P < 0.0001; control vs SYP + DDP, P < 0.0001; control vs DDP, P < 0.0001, SPY vs SYP + DDP, P = 0.0040; SYP + DDP vs DDP, P = 0.0010; PD-L1 mRNA: Control vs SYP, P < 0.0001; control vs SYP + DDP, P < 0.0001; control vs DDP, P < 0.0001, SPY vs SYP + DDP, P < 0.0001; SYP + DDP vs DDP, P = 0.0014). Additionally, the quantitative and protein expression levels of CD4+ T cells and CD8+ T cells were simultaneously upregulated in the SYP + DDP group, whereas only the expression of CD4+ T cells was upregulated in the SYP group. (CD4+ T cell quantitative: Control vs SYP + DDP, P < 0.0001, SYP vs SYP + DDP, P = 0.0005; SYP + DDP vs DDP, P = 0.0002. CD4+ T cell protein: Control vs SYP, P = 0.0033; Control vs SYP + DDP, P < 0.0001; Control vs DDP, P = 0.0021, SYP vs SYP + DDP, P = 0.0004; SYP + DDP vs DDP, P = 0.0006. Quantitative CD8+ T cells: Control vs SYP + DDP, P = 0.0013; SYP vs SYP + DDP, P = 0.0347; SYP + DDP vs DDP, P = 0.0043. CD8+ T cell protein: Control vs SYP + DDP, P < 0.0001; SYP vs SYP + DDP, P < 0.0001; SYP + DDP vs DDP, P < 0.0001). Finally, expression of HIF-1α was positively correlated with that of PD-1/PD-L1 and negatively correlated with the expression of CD4+ T cells and CD8+ T cells.
CONCLUSION SYPs inhibit immune escape and enhance chemosensitization in HCC via simultaneous inhibition of HIF-1α and PD-L1, thus inhibiting the growth of subcutaneous xenograft HCC tumours.
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Affiliation(s)
- Zhe Deng
- College of Integrated Chinese and Western Medicine, Hunan Key Laboratory of Translational Research in Formulas and Zheng of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Yong-Jie Teng
- The First Hospital of Hunan University of Chinese Medicine, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Qing Zhou
- The First Hospital of Hunan University of Chinese Medicine, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Zhao-Guang Ouyang
- Department of Preventive Dentistry, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou 510132, Guangdong Province, China
| | - Yu-Xing Hu
- The First Hospital of Hunan University of Chinese Medicine, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Hong-Ping Long
- Experiment Center of Medical Innovation, The First Hospital of Hunan University of Chinese Medicine, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Mei-Jie Hu
- The First Hospital of Hunan University of Chinese Medicine, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Si Mei
- Department of Physiology, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Feng-Xia Lin
- Department of Cardiology, Shenzhen Bao'an Traditional Chinese Medicine Hospital Group, The Affiliated Hospital of Guangzhou University of Chinese Medicine, Shenzhen 518133, Guangdong Province, China
| | - Xin-Jun Dai
- College of Integrated Chinese and Western Medicine, Hunan Key Laboratory of Translational Research in Formulas and Zheng of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Bo-Yu Zhang
- College of Acupuncture and Massage, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Ting Feng
- College of Integrated Chinese and Western Medicine, Hunan Key Laboratory of Translational Research in Formulas and Zheng of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
| | - Xue-Fei Tian
- College of Integrated Chinese and Western Medicine, Hunan Key Laboratory of Translational Research in Formulas and Zheng of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
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Song WY, Wang XR, Yu MC, Cui YX, Qi Y, Sun SM. [Progress of researches on serine protease inhibitors for zoonotic cestode family Taeniidae]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:650-654. [PMID: 35128901 DOI: 10.16250/j.32.1374.2021024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Serine protease inhibitor, a protein superfamily that inhibits the serine protease activity, protects hosts from parasitic infections. This review describes the spatial structure and classification of serine protease inhibitor, mechanisms underlying the interplay between serine protease inhibitor and host immune responses and current advances in serine protease inhibitor of zoonotic cestode family Taeniidae, so as to provide insights into the diagnosis of zoonotic tapeworm infections, discovery of therapeutic targets and screening of vaccine candidates.
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Affiliation(s)
- W Y Song
- College of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028000, China
| | - X R Wang
- College of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028000, China
| | - M C Yu
- College of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028000, China
| | - Y X Cui
- College of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028000, China
| | - Y Qi
- College of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028000, China
| | - S M Sun
- College of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia 028000, China
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Wang J, Sun L, Liu J, Sun B, Li L, Xu ZP. Biomimetic 2D layered double hydroxide nanocomposites for hyperthermia-facilitated homologous targeting cancer photo-chemotherapy. J Nanobiotechnology 2021; 19:351. [PMID: 34717639 PMCID: PMC8557519 DOI: 10.1186/s12951-021-01096-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 10/18/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Multi-modal therapy has attracted increasing attention as it provides enhanced effectiveness and potential stimulation of the immune community. However, low accumulation at the tumor sites and quick immune clearance of the anti-tumor agents are still insurmountable challenges. Hypothetically, cancer cell membrane (CCM) can homologously target the tumor whereas multi-modal therapy can complement the disadvantages of singular therapies. Meanwhile, moderate hyperthermia induced by photothermal therapy can boost the cellular uptake of therapeutic agents by cancer cells. RESULTS CCM-cloaked indocyanine green (ICG)-incorporated and abraxane (PTX-BSA)-loaded layered double hydroxide (LDH) nanosheets (LIPC NSs) were fabricated for target efficient photo-chemotherapy of colorectal carcinoma (CRC). The CCM-cloaked LDH delivery system showed efficient homologous targeting and cytotoxicity, which was further enhanced under laser irradiation to synergize CRC apoptosis. On the other hand, CCM-cloaking remarkably reduced the uptake of LDH NSs by HEK 293T cells and macrophages, implying mitigation of the side effects and the immune clearance, respectively. In vivo data further exhibited that LIPC NSs enhanced the drug accumulation in tumor tissues and significantly retarded tumor progression under laser irradiation at very low therapeutic doses (1.2 and 0.6 mg/kg of ICG and PTX-BSA), without observed side effects on other organs. CONCLUSIONS This research has demonstrated that targeting delivery efficiency and immune-escaping ability of LIPC NSs are tremendously enhanced by CCM cloaking for efficient tumor accumulation and in situ generated hyperthermia boosts the uptake of LIPC NSs by cancer cells, a potential effective way to improve the multi-modal cancer therapy.
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Affiliation(s)
- Jingjing Wang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Luyao Sun
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Jie Liu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Bing Sun
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Li Li
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia.
| | - Zhi Ping Xu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia.
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Sun Z, Yin S, Zhao C, Fan LH, Hu H. Involvement of PD-L1-mediated Tumor Intrinsic Signaling and Immune Suppression in Tumorigenic Effect of α-Tocopherol. Carcinogenesis 2021; 43:243-253. [PMID: 34657155 DOI: 10.1093/carcin/bgab096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/12/2021] [Accepted: 10/14/2021] [Indexed: 11/13/2022] Open
Abstract
Numerous studies have shown that the different isoforms vitamin E have distinct activity on carcinogenesis. α-Tocopherol (α-T), the most abundant vitamin E in certain types of food and animal tissues, has demonstrated a cancer-promoting effect in a number of human clinical trials and pre-clinical studies, whereas the γ- and δ- forms of Tocopherols and Tocotrienols have exhibited significant anticancer effect in various pre-clinical studies. However, the mechanisms underlying the tumorigenic effect of α-T have not yet been fully understood. In the present study, we found that α-T was able to activate Programmed death-ligand 1 (PD-L1)-mediated tumor-intrinsic signaling and immune suppression via JAK/STAT3-dependent transcriptional and ERK-dependent posttranscriptional mechanism. In line with PD-L1 induction, α-T treatment increased cancer cell viability in vitro and promoted tumor growth in LLC xenograft mouse model. The findings of the present study for the first time provided evidence that PD-L1-mediated tumor-intrinsic and immune escape mechanism contributed to the tumorigenic effect of α-T.
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Affiliation(s)
- Zhenou Sun
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Haidian District, Beijing, China
| | - Shutao Yin
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Haidian District, Beijing, China
| | - Chong Zhao
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Haidian District, Beijing, China
| | - Li Hong Fan
- College of Veterinary Medicine, China Agricultural University, Haidian District, Beijing, China
| | - Hongbo Hu
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Haidian District, Beijing, China
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Baral P, Bhattarai N, Hossen ML, Stebliankin V, Gerstman BS, Narasimhan G, Chapagain PP. Mutation-induced changes in the receptor-binding interface of the SARS-CoV-2 Delta variant B.1.617.2 and implications for immune evasion. Biochem Biophys Res Commun 2021; 574:14-19. [PMID: 34425281 PMCID: PMC8364676 DOI: 10.1016/j.bbrc.2021.08.036] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 08/13/2021] [Indexed: 12/15/2022]
Abstract
Following the initial surges of the Alpha (B.1.1.7) and the Beta (B.1.351) variants, a more infectious Delta variant (B.1.617.2) is now surging, further deepening the health crises caused by the pandemic. The sharp rise in cases attributed to the Delta variant has made it especially disturbing and is a variant of concern. Fortunately, current vaccines offer protection against known variants of concern, including the Delta variant. However, the Delta variant has exhibited some ability to dodge the immune system as it is found that neutralizing antibodies from prior infections or vaccines are less receptive to binding with the Delta spike protein. Here, we investigated the structural changes caused by the mutations in the Delta variant's receptor-binding interface and explored the effects on binding with the ACE2 receptor as well as with neutralizing antibodies. We find that the receptor-binding β-loop-β motif adopts an altered but stable conformation causing separation in some of the antibody binding epitopes. Our study shows reduced binding of neutralizing antibodies and provides a possible mechanism for the immune evasion exhibited by the Delta variant.
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Affiliation(s)
- Prabin Baral
- Department of Physics, Florida International University, Miami, FL, 33199, USA
| | - Nisha Bhattarai
- Department of Physics, Florida International University, Miami, FL, 33199, USA
| | - Md Lokman Hossen
- Department of Physics, Florida International University, Miami, FL, 33199, USA
| | - Vitalii Stebliankin
- Bioinformatics Research Group (BioRG), Knight Foundation School of Computing and Information Sciences, Florida International University, Miami, FL, 33199, USA
| | - Bernard S. Gerstman
- Department of Physics, Florida International University, Miami, FL, 33199, USA,Biomolecular Sciences Institute, Florida International University, Miami, FL, 33199, USA
| | - Giri Narasimhan
- Bioinformatics Research Group (BioRG), Knight Foundation School of Computing and Information Sciences, Florida International University, Miami, FL, 33199, USA,Biomolecular Sciences Institute, Florida International University, Miami, FL, 33199, USA
| | - Prem P. Chapagain
- Department of Physics, Florida International University, Miami, FL, 33199, USA,Biomolecular Sciences Institute, Florida International University, Miami, FL, 33199, USA,Corresponding author. Department of Physics, Florida International University, Miami, FL, 33199, USA
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Huang Y, Luo Y, Ou W, Wang Y, Dong D, Peng X, Luo Y. Exosomal lncRNA SNHG10 derived from colorectal cancer cells suppresses natural killer cell cytotoxicity by upregulating INHBC. Cancer Cell Int 2021; 21:528. [PMID: 34641864 PMCID: PMC8507338 DOI: 10.1186/s12935-021-02221-2] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/23/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Exosome-mediated crosstalk between cancer cells and immune cells contributes to tumor growth. In this study, we investigated the mechanism underlying the exosome-mediated immune escape of colorectal cancer (CRC) cells from natural killer (NK) cells via the transfer of long noncoding RNAs (lncRNAs). METHODS An epithelial-mesenchymal transition (EMT) model of SW480 cells was established by transforming growth factor beta (TGF-β), followed by the assessment of the effect of EMT-derived exosomes (EMT-exo) on the functions of NK cells. RNA sequencing was performed to identify exosomal lncRNAs and target genes. The function of exosomal lncRNAs in tumor growth was further verified in vivo. RESULTS EMT-exo suppressed the proliferation, cytotoxicity, IFN-γ production, and perforin-1 and granzyme B secretion of NK cells. RNA sequencing revealed that SNHG10 expression was upregulated in EMT-exo compared with that in non-EMT-exo. Moreover, SNHG10 expression was upregulated in tumor tissues in CRC, which was associated with poor prognosis. Overexpression of SNHG10 in exosomes (oe-lnc-SNHG10 exo) significantly suppressed the viability and cytotoxicity of NK cells. Transcriptome sequencing of NK cells revealed that the expression levels of 114 genes were upregulated in the oe-lnc-SNHG10 exo group, including inhibin subunit beta C (INHBC), which was involved in the TGF-β signaling pathway. Si-INHBC treatment abrogated the effect of oe-lnc-SNHG10 exo on NK cells. oe-lnc-SNHG10 exo induced tumor growth and upregulated INHBC expression in mice and downregulated the expression of perforin, granzyme B, and NK1.1 in tumor tissues. CONCLUSIONS The CRC cell-derived exosomal lncRNA SNHG10 suppresses the function of NK cells by upregulating INHBC expression. This study provides evidence that exosomal lncRNAs contribute to immune escape by inducing NK cell inhibition and proposes a potential treatment strategy for CRC.
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Affiliation(s)
- Yiwen Huang
- Department of Emergency, Nansha Hospital, Guangzhou First People's Hospital, School of Medicine, Southern China University of Technology, Guangzhou, Guangdong, China
| | - Yanbo Luo
- Department of Gastrointestinal and Hepatobiliary Surgery, Shenzhen Longhua District Central Hospital, No. 187, Guanlan Road, Longhua District, Shenzhen, 518110, Guangdong Province, China
| | - Wentao Ou
- Department of General Surgery, Nansha Hospital, Guangzhou First People's Hospital, School of Medicine, Southern China University of Technology, Guangzhou, Guangdong, China
| | - Yuanyuan Wang
- Department of Neurology, Nansha Hospital, Guangzhou First People's Hospital, School of Medicine, Southern China University of Technology, Guangzhou, Guangdong, China
| | - Dong Dong
- Department of General Surgery, Nansha Hospital, Guangzhou First People's Hospital, School of Medicine, Southern China University of Technology, Guangzhou, Guangdong, China
| | - Xiaowen Peng
- Department of Laboratory Medicine, Guangzhou First People's Hospital, School of Medicine, Nansha Hospital, Southern China University of Technology, Guangzhou, Guangdong, China
| | - Yuqi Luo
- Department of Gastrointestinal and Hepatobiliary Surgery, Shenzhen Longhua District Central Hospital, No. 187, Guanlan Road, Longhua District, Shenzhen, 518110, Guangdong Province, China.
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Müller K, Girl P, Giebl A, Gruetzner S, Antwerpen M, Khatamzas E, Wölfel R, von Buttlar H. Sensitivity of two SARS-CoV-2 variants with spike protein mutations to neutralising antibodies. Virus Genes 2021; 57:502-9. [PMID: 34608598 DOI: 10.1007/s11262-021-01871-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/22/2021] [Indexed: 12/24/2022]
Abstract
SARS-CoV-2 infections elicit a humoral immune response capable of neutralising the virus. However, multiple variants have emerged with mutations in the spike protein amongst others, the key target of neutralising antibodies. We evaluated the neutralising efficacy of 89 serum samples from patients, infected with SARS-CoV-2 in the beginning of 2020, against two virus variants isolated from acutely infected patients and harbouring spike protein mutations. One isolate was assigned to lineage B.1.351 (MUC-IMB-B.1.351) whilst the other (MUC-484) was isolated from an immunocompromised patient, sharing some but not all mutations with B.1.351 and representing a transitional variant. Both variants showed a significant reduction in neutralisation sensitivity compared to wild-type SARS-CoV-2 with MUC-IMB-B.1.351 being almost completely resistant to neutralisation. The observed reduction in neutralising activity of wild-type-specific antibodies against both variants suggests that individual mutations in the spike protein are sufficient to confer a potent escape from the humoral immune response. In addition, the effect of escape mutations seems to accumulate, so that more heavily mutated variants show a greater loss of sensitivity to neutralisation up to complete insensitivity as observed for MUC-IMB-B.1.351. From a clinical point of view, this might affect the efficacy of (monoclonal) antibody treatment of patients with prolonged infections as well as patients infected with variants other than the donor. At the same, this could also negatively influence the efficacy of current vaccines (as they are based on wild-type spike protein) emphasising the need to thoroughly surveil the emergence and distribution of variants and adapt vaccines and therapeutics accordingly.
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Klinakis A, Cournia Z, Rampias T. N-terminal domain mutations of the spike protein are structurally implicated in epitope recognition in emerging SARS-CoV-2 strains. Comput Struct Biotechnol J 2021; 19:5556-67. [PMID: 34630935 DOI: 10.1016/j.csbj.2021.10.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 09/16/2021] [Accepted: 10/01/2021] [Indexed: 12/23/2022] Open
Abstract
During the past two years, the world has been ravaged by a global pandemic caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Acquired mutations in the SARS-CoV-2 genome affecting virus infectivity and/or immunogenicity have led to a number of novel strains with higher transmissibility compared to the original Wuhan strain. Mutations in the receptor binding domain (RBD) of the SARS-CoV-2 spike protein have been extensively studied in this context. However, mutations and deletions within the N-terminal domain (NTD) located adjacent to the RBD are less studied. Many of these are found within certain β sheet-linking loops, which are surprisingly long in SARS-CoV-2 in comparison to SARS-CoV and other related β coronaviruses. Here, we perform a structural and epidemiological study of novel strains carrying mutations and deletions within these loops. We identify short and long-distance interactions that stabilize the NTD loops and form a critical epitope that is essential for the recognition by a wide variety of neutralizing antibodies from convalescent plasma. Among the different mutations/deletions found in these loops, Ala 67 and Asp 80 mutations as well as His 69/Val 70 and Tyr 144 deletions have been identified in different fast-spreading strains. Similarly, deletions in amino acids 241-243 and 246-252 have been found to affect the network of NTD loops in strains with high transmissibility. Our structural findings provide insight regarding the role of these mutations/deletions in altering the epitope structure and thus affecting the immunoreactivity of the NTD region of spike protein.
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175
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Xu JL, Guo Y. A comprehensive analysis of different gene classes in pancreatic cancer: SIGLEC15 may be a promising immunotherapeutic target. Invest New Drugs 2021; 40:58-67. [PMID: 34515878 DOI: 10.1007/s10637-021-01176-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 09/02/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Pancreatic cancer (PC) is one of the most lethal cancer types with an extremely poor diagnosis and prognosis. This study aimed to comprehensively analyze the relationships between PC and different gene classes. METHODS Numerous genes from different categories were selected from the UALCAN database. Expression and survival analysis of these genes were performed via GEPIA, starBase and Kaplan-Meier Plotter tools. The correlations between PC-related genes and frequently mutated genes in PC as well as myeloid-derived suppressor cells (MDSCs) infiltration levels were explored by TIMER tool. The associations between PC-related genes, immune checkpoints and 182 core cancer-intrinsic CTLs-evasion genes were analyzed by R software. Besides, KEGG analysis were performed for the PC-related genes. RESULTS 14 genes were identified to be highly expressed in pancreatic cancer and significantly associated with poor prognosis. Besides, high expression of these genes were observed in patients with KRAS or TP53 mutations. Most genes were significantly positively associated with immune checkpoint SIGLEC15, however, showed negative relations to PDCD1, CTLA4, LAG3, TIGIT, PDCD1LG2. In addition, all 14 genes exhibited close relationships with MDSC infiltration levels and various core cancer-intrinsic CTLs-evasion genes, especially DNTTIP1, FADD, ARF6, BCL2L1, CEP55, GALE, PDCD6IP, and RCE1. We also explored the most related pathways with these genes to further reveal the pathogenesis and metastatic mechanisms of PC. CONCLUSION Our study analyzed the relationships between 14 PC-related genes and pancreatic cancer from different angles, which may contribute to a better understanding of unsolved mystery in PC.
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Affiliation(s)
- Ji-Li Xu
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, P. R. China
| | - Yong Guo
- Department of Medical Oncology, The First Affiliated Hospital of Zhejiang Chinese Medical University, 54 youdian road, shangcheng district, hangzhou city, zhejiang province, Hangzhou, Zhejiang, China.
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176
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Abstract
Autophagy is catabolic process by degradation of intracellular components in lysosome including proteins, lipids, and mitochondria in response to nutrient deficiency or stress such as hypoxia or chemotherapy. Increasing evidence suggests that autophagy could induce immune checkpoint proteins (PD-L1, MHC-I/II) degradation of cancer cells, which play an important role in regulating cancer cell immune escape. In addition to autophagic degradation of immune checkpoint proteins, autophagy induction in immune cells (macrophages, dendritic cells) manipulates antigen presentation and T cell activity. These reports suggest that autophagy could negatively or positively regulate cancer cell immune escape by immune checkpoint protein and antigens degradation, cytokines release, antigens generation. These controversial phenomenon of autophagy on cancer cell immune evasion may be derived from different experimental context or models. In addition, autophagy maybe exhibit a role in regulating host excessive immune response. So rational combination with autophagy could enhance the efficacy of cancer immunotherapy. In this review, the current progress of autophagy on cancer immune escape is discussed. Video Abstract
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Affiliation(s)
- Yalan Duan
- Department of Oncology, The Affiliated Wujin Hospital, Jiangsu University, Changzhou, 213017, Jiangsu Province, China.,School of Life Sciences, Jiangsu University, Zhenjiang, 213017, Jiangsu Province, China
| | - Xiaoqing Tian
- School of Life Sciences, Jiangsu University, Zhenjiang, 213017, Jiangsu Province, China
| | - Qian Liu
- Department of Oncology, The Affiliated Wujin Hospital, Jiangsu University, Changzhou, 213017, Jiangsu Province, China.,Department of Oncology, The Wujin Clinical College of Xuzhou Medical University, Changzhou, 213017, Jiangsu Province, China
| | - Jianhua Jin
- Department of Oncology, The Affiliated Wujin Hospital, Jiangsu University, Changzhou, 213017, Jiangsu Province, China.,Department of Oncology, The Wujin Clinical College of Xuzhou Medical University, Changzhou, 213017, Jiangsu Province, China
| | - Juanjuan Shi
- School of Life Sciences, Jiangsu University, Zhenjiang, 213017, Jiangsu Province, China
| | - Yongzhong Hou
- Department of Oncology, The Affiliated Wujin Hospital, Jiangsu University, Changzhou, 213017, Jiangsu Province, China. .,School of Life Sciences, Jiangsu University, Zhenjiang, 213017, Jiangsu Province, China.
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Mukhopadhyay S, Mahapatra KK, Praharaj PP, Patil S, Bhutia SK. Recent progress of autophagy signaling in tumor microenvironment and its targeting for possible cancer therapeutics. Semin Cancer Biol 2021; 85:196-208. [PMID: 34500075 DOI: 10.1016/j.semcancer.2021.09.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 08/30/2021] [Accepted: 09/03/2021] [Indexed: 02/08/2023]
Abstract
Autophagy, a lysosomal catabolic process, involves degradation of cellular materials, protein aggregate, and dysfunctional organelles to maintain cellular homeostasis. Strikingly, autophagy exhibits a dual-sided role in cancer; on the one hand, it promotes clearance of transformed cells and inhibits tumorigenesis, while cytoprotective autophagy has a role in sustaining cancer. The autophagy signaling in the tumor microenvironment (TME) during cancer growth and therapy is not adequately understood. The review highlights the role of autophagy signaling pathways to support cancer growth and progression in adaptation to the oxidative and hypoxic context of TME. Furthermore, autophagy contributes to regulating the metabolic switch for generating sufficient levels of high-energy metabolites, including amino acids, ketones, glutamine, and free fatty acids for cancer cell survival. Interestingly, autophagy has a critical role in modulating the tumor-associated fibroblast resulting in different cytokines and paracrine signaling mediated angiogenesis and invasion of pre-metastatic niches to secondary tumor sites. Moreover, autophagy promotes immune evasion to inhibit antitumor immunity, and autophagy inhibitors enhance response to immunotherapy with infiltration of immune cells to the TME niche. Furthermore, autophagy in TME maintains and supports the survival of cancer stem cells resulting in chemoresistance and therapy recurrence. Presently, drug repurposing has enabled the use of lysosomal inhibitor-based antimalarial drugs like chloroquine and hydroxychloroquine as clinically available autophagy inhibitors in cancer therapy. We focus on the recent developments of multiple autophagy modulators from pre-clinical trials and the challenges in developing autophagy-based cancer therapy.
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Affiliation(s)
- Subhadip Mukhopadhyay
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Kewal Kumar Mahapatra
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Prakash Priyadarshi Praharaj
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Shankargouda Patil
- Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Saudi Arabia
| | - Sujit Kumar Bhutia
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India.
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178
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Liu Z, Wang T, She Y, Wu K, Gu S, Li L, Dong C, Chen C, Zhou Y. N 6-methyladenosine-modified circIGF2BP3 inhibits CD8 + T-cell responses to facilitate tumor immune evasion by promoting the deubiquitination of PD-L1 in non-small cell lung cancer. Mol Cancer 2021; 20:105. [PMID: 34416901 PMCID: PMC8377850 DOI: 10.1186/s12943-021-01398-4] [Citation(s) in RCA: 142] [Impact Index Per Article: 47.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/24/2021] [Indexed: 12/29/2022] Open
Abstract
Background An in-depth understanding of immune evasion mechanisms in tumors is crucial to overcome resistance and enable innovative advances in immunotherapy. Circular RNAs (circRNAs) have been implicated in cancer progression. However, much remains unknown regarding whether circRNAs impact immune escape in non-small-cell lung carcinoma (NSCLC). Methods We performed bioinformatics analysis to profile and identify the circRNAs mediating immune evasion in NSCLC. A luciferase reporter assay, RNA immunoprecipitation (RIP), RNA pulldown assays and fluorescence in situ hybridization were performed to identify the interactions among circIGF2BP3, miR-328-3p, miR-3173-5p and plakophilin 3 (PKP3). In vitro T cell-mediated killing assays and in vivo syngeneic mouse models were used to investigate the functional roles of circIGF2BP3 and its downstream target PKP3 in antitumor immunity in NSCLC. The molecular mechanism of PKP3-induced PD-L1 upregulation was explored by immunoprecipitation, RIP, and ubiquitination assays. Results We demonstrated that circIGF2BP3 (hsa_circ_0079587) expression was increased in NSCLC and negatively correlated with CD8+ T cell infiltration. Functionally, elevated circIGF2BP3 inactivated cocultured T cells in vitro and compromised antitumor immunity in an immunocompetent mouse model, and this effect was dependent on CD8+ T cells. Mechanistically, METTL3 mediates the N6-methyladenosine (m6A) modification of circIGF2BP3 and promotes its circularization in a manner dependent on the m6A reader protein YTHDC1. circIGF2BP3 competitively upregulates PKP3 expression by sponging miR-328-3p and miR-3173-5p to compromise the cancer immune response. Furthermore, PKP3 engages with the RNA-binding protein FXR1 to stabilize OTUB1 mRNA, and OTUB1 elevates PD-L1 abundance by facilitating its deubiquitination. Tumor PD-L1 deletion completely blocked the impact of the circIGF2BP3/PKP3 axis on the CD8+ T cell response. The inhibition of circIGF2BP3/PKP3 enhanced the treatment efficacy of anti-PD-1 therapy in a Lewis lung carcinoma mouse model. Collectively, the PKP3/PD-L1 signature and the infiltrating CD8+ T cell status stratified NSCLC patients into different risk groups. Conclusion Our results reveal the function of circIGF2BP3 in causing immune escape from CD8+ T cell-mediated killing through a decrease in PD-L1 ubiquitination and subsequent proteasomal degradation by stabilizing OTUB1 mRNA in a PKP3-dependent manner. This work sheds light on a novel mechanism of PD-L1 regulation in NSCLC and provides a rationale to enhance the efficacy of anti-PD-1 treatment in NSCLC. Supplementary Information The online version contains supplementary material available at 10.1186/s12943-021-01398-4.
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Affiliation(s)
- Zhenchuan Liu
- Department of Thoracic Surgery, Shanghai Tongji Hospital, School of Medicine, Tongji University, Xincun Rd. 389, Shanghai, 200065, People's Republic of China
| | - Tingting Wang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Zhengmin Rd. 507, Shanghai, 200443, People's Republic of China
| | - Yunlang She
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Zhengmin Rd. 507, Shanghai, 200443, People's Republic of China
| | - Kaiqing Wu
- Department of Thoracic Surgery, Shanghai Tongji Hospital, School of Medicine, Tongji University, Xincun Rd. 389, Shanghai, 200065, People's Republic of China
| | - Shaorui Gu
- Department of Thoracic Surgery, Shanghai Tongji Hospital, School of Medicine, Tongji University, Xincun Rd. 389, Shanghai, 200065, People's Republic of China
| | - Lei Li
- Department of Thoracic Surgery, Shanghai Tongji Hospital, School of Medicine, Tongji University, Xincun Rd. 389, Shanghai, 200065, People's Republic of China
| | - Chenglai Dong
- Department of Thoracic Surgery, Shanghai Tongji Hospital, School of Medicine, Tongji University, Xincun Rd. 389, Shanghai, 200065, People's Republic of China
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Zhengmin Rd. 507, Shanghai, 200443, People's Republic of China.
| | - Yongxin Zhou
- Department of Thoracic Surgery, Shanghai Tongji Hospital, School of Medicine, Tongji University, Xincun Rd. 389, Shanghai, 200065, People's Republic of China.
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Sekizuka T, Itokawa K, Hashino M, Okubo K, Ohnishi A, Goto K, Tsukagoshi H, Ehara H, Nomoto R, Ohnishi M, Kuroda M. A discernable increase in the severe acute respiratory syndrome coronavirus 2 R.1 lineage carrying an E484K spike protein mutation in Japan. Infect Genet Evol 2021; 94:105013. [PMID: 34352360 PMCID: PMC8327703 DOI: 10.1016/j.meegid.2021.105013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 07/14/2021] [Accepted: 07/20/2021] [Indexed: 01/22/2023]
Abstract
Three COVID-19 waves in Japan have been characterized by the presence of distinct PANGO lineages (B.1.1. 162, B.1.1.284, and B.1.1.214). Recently, in addition to the B.1.1.7 lineage, which shows 25% abundance, an R.1 lineage carrying the E484K mutation in the spike protein was found to show up to 40% predominance. E484K could be a pivotal amino acid substitution with the potential to mediate immune escape; thus, more attention should be paid to such potential variants of concern to avoid the emergence of mutants of concern. Such comprehensive real-time genome surveillance has become essential for the containment of COVID-19 clusters.
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Affiliation(s)
- Tsuyoshi Sekizuka
- Pathogen Genomics Center, National Institute of Infectious Diseases, Shinjyuku, Tokyo, Japan
| | - Kentaro Itokawa
- Pathogen Genomics Center, National Institute of Infectious Diseases, Shinjyuku, Tokyo, Japan
| | - Masanori Hashino
- Pathogen Genomics Center, National Institute of Infectious Diseases, Shinjyuku, Tokyo, Japan
| | | | - Asami Ohnishi
- Sapporo City Institute of Public Health, Hokkaido, Japan
| | - Keiko Goto
- Ibaraki Prefectural Institute of Public Health, Ibaraki, Japan
| | - Hiroyuki Tsukagoshi
- Gunma Prefectural Institute of Public Health and Environmental Sciences, Gunma, Japan
| | - Hayato Ehara
- Saitama Prefectural Institute of Public Health, Yoshimi, Saitama, Japan
| | | | - Makoto Ohnishi
- National Institute of Infectious Diseases, Shinjyuku, Tokyo, Japan
| | - Makoto Kuroda
- Pathogen Genomics Center, National Institute of Infectious Diseases, Shinjyuku, Tokyo, Japan.
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180
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Xia L, Jiang L, Chen Y, Zhang G, Chen L. ThPOK transcriptionally inactivates TNFRSF12A to increase the proliferation of T cells with the involvement of the NF-kB pathway. Cytokine 2021; 148:155658. [PMID: 34353698 DOI: 10.1016/j.cyto.2021.155658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/05/2021] [Accepted: 07/19/2021] [Indexed: 01/20/2023]
Abstract
Gastric cancer (GC), originated from gastric mucosa, is a malignant tumor causing numerous deaths globally. The present study used the coculture of T cells with supernatant of the GC cells (HGC-27, SNU-1) and investigated the function and regulatory mechanism of Zinc finger and BTB domain containing 7B (ZBTB7B, alias ThPOK) on T cell proliferation. Flow cytometry analysis was used to measure the proliferation of CD3+ T cells and IFN-γ+ T cells. We found that low level of ThPOK was associated with poor prognosis in GC patients. ThPOK was lowly expressed in GC cells at the mRNA and protein levels. ThPOK overexpression inhibited GC cell viability and promoted proliferation of T cells. ThPOK was identified to function as a transcription factor for TNFRSF12A. TNFRSF12A was upregulated in GC tissues and cells and high level of TNFRSF12A was associated with poor prognosis in GC patients. ThPOK knockdown elevated TNFRSF12A level in GC cells. ThPOK was revealed to bind with the promoter of TNFRSF12A. TNFRSF12A silencing also inhibited GC cell viability and promoted T cell activation and proliferation. Additionally, ThPOK was demonstrated to inactivate the NF-kB pathway by downregulating TNFRSF12A in GC cells. Overall, ThPOK suppresses cell viability in GC and increases the activation and proliferation of T cells by targeting TNFRSF12A to inactivate the NF-kB pathway.
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Affiliation(s)
- Lingli Xia
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan 430015, Hubei, China
| | - Lili Jiang
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan 430015, Hubei, China
| | - Ying Chen
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan 430015, Hubei, China
| | - Gang Zhang
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan 430015, Hubei, China
| | - Lan Chen
- Department of Gastroenterology, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan 430015, Hubei, China.
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Zhao Y, Shi Z, Hao Z, Zhou J, Han C, Li R, Lv Q, Liu Y, Liang C. Hypoxia-mediated down-regulation of miRNAs' biogenesis promotes tumor immune escape in bladder cancer. Clin Transl Oncol 2021; 23:1678-1687. [PMID: 33625672 DOI: 10.1007/s12094-021-02569-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/03/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND The study examines the function of hypoxia-mediated down-regulation of microRNAs (miRNAs) (mir-30c, mir-135a, and mir-27a) in the process of bladder cancer immune escape. METHODS Quantitative Real-time PCR (qRT-PCR) was carried out to determine gene expression levels of Drosha and Dicer under hypoxia treatment, while western blotting and flow cytometry were used to determine protein expression. Seven reported miRNAs were identified via qRT-PCR assay. Flow cytometry detection of CD3/CD4/CD8-positive expression and statistics. Enzyme-linked immunosorbent assay (ELISA) detected cellular immune factors content. Cell apoptosis was checked via flow cytometry assay. Luciferase report assay and western blot assays were both used to verify the relationship between miRNAs and Casitas B-lineage lymphoma proto-oncogene b (Cbl-b). The animal model was established and Hematoxylin-eosin (HE) staining, TdT-mediated dUTP Nick-End Labeling (TUNEL) staining, and immunohistochemistry (IHC) assays were separately used to verify the conclusions. RESULTS The CD3 + /CD4 + expression was increased in the hypoxia group, while CD3 + /CD8 + expression, the cellular immune factors content Interleukin-2 (IL-2) and Tumor Necrosis Factor-α (TNFα) along with the cell apoptosis were suppressed. The protein expression of Cbl-b was found to be up-regulated in the hypoxia group. After constructing the overexpression/ knockdown of Cbl-b in peripheral blood mononuclear cell (PBMC), Cbl-b has been found to promote tumor immune escape in bladder cancer. Furthermore, Cbl-b had been identified as the co-targets of mir-30c, mir-135a, and mir-27a and down-regulation of miRNA biogenesis promotes Cbl-b expression and deactivating T cells in vitro/in vivo. CONCLUSION Hypoxia-mediated down-regulation of miRNAs' biogenesis promotes tumor immune escape in bladder cancer, which could bring much more advance to the medical research on tumors.
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Affiliation(s)
- Y Zhao
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Hefei, 230000, China
- Institute of Urology, Anhui Medical University, Hefei, 230000, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, 230000, China
- Xuzhou Central Hospital, Xuzhou, 221009, China
- Xuzhou Medical College, Xuzhou Medical University, Xuzhou, 221004, China
| | - Z Shi
- Xuzhou Central Hospital, Xuzhou, 221009, China
- Xuzhou Medical College, Xuzhou Medical University, Xuzhou, 221004, China
| | - Z Hao
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Hefei, 230000, China
- Institute of Urology, Anhui Medical University, Hefei, 230000, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, 230000, China
| | - J Zhou
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Hefei, 230000, China
- Institute of Urology, Anhui Medical University, Hefei, 230000, China
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, 230000, China
| | - C Han
- Xuzhou Central Hospital, Xuzhou, 221009, China
- Xuzhou Medical College, Xuzhou Medical University, Xuzhou, 221004, China
| | - R Li
- Xuzhou Central Hospital, Xuzhou, 221009, China
- Xuzhou Medical College, Xuzhou Medical University, Xuzhou, 221004, China
| | - Q Lv
- Xuzhou Central Hospital, Xuzhou, 221009, China
- Xuzhou Medical College, Xuzhou Medical University, Xuzhou, 221004, China
| | - Y Liu
- Xuzhou Central Hospital, Xuzhou, 221009, China
- Xuzhou Medical College, Xuzhou Medical University, Xuzhou, 221004, China
| | - C Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, No.218 Jixi Road, Hefei, 230000, China.
- Institute of Urology, Anhui Medical University, Hefei, 230000, China.
- Anhui Province Key Laboratory of Genitourinary Diseases, Anhui Medical University, Hefei, 230000, China.
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Goes LR, Siqueira JD, Garrido MM, Alves BM, Pereira ACPM, Cicala C, Arthos J, Viola JPB, Soares MA. New infections by SARS-CoV-2 variants of concern after natural infections and post-vaccination in Rio de Janeiro, Brazil. Infect Genet Evol 2021; 94:104998. [PMID: 34252616 PMCID: PMC8270730 DOI: 10.1016/j.meegid.2021.104998] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/07/2021] [Accepted: 07/07/2021] [Indexed: 12/28/2022]
Abstract
After a one-year rollout of the pandemic caused by SARS-CoV-2, the continuous dissemination of the virus has generated a number of variants with increased transmissibility and infectivity, called variants of concern (VOC), which now predominate worldwide. Concerns about the susceptibility of humans that have already been infected before or those already vaccinated to infection by VOC rise among scientists and clinicians. Herein, we assessed the prevalence of different VOC among recent infections at the Brazilian National Cancer Institute (Rio de Janeiro, Brazil). By using a Sanger-based sequencing approach targeting the viral S gene to identify VOC, we have analyzed 72 recent infections. The overall prevalence of VOC was 97%. Among the subjects analyzed, six had been vaccinated with the ChAdOx1-S/nCoV-19 (n = 4; one with two doses and three with one dose) or the CoronaVac (n = 2; both with 2 doses) vaccine, while five subjects represented reinfection cases, being two of them also part of the vaccinated group (each one with one vaccine type). All vaccinated and re-infected subjects carried VOC irrespective of the vaccine type taken, the number of doses taken, IgG titers or being previously infected during the first wave of the Brazilian pandemic. Importantly, all six vaccinees only had mild symptoms. We present here several examples of how natural infections or vaccination may not be fully capable of conferring sterilizing immunity against VOC.
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Affiliation(s)
- Livia R Goes
- Oncovirology Program, Brazilian National Cancer Institute, Rua Andre Cavalcanti, 37, Rio de Janeiro, RJ 20231-050, Brazil; Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, Building 10 Room 6A08, 9000 Rockville Pike, Bethesda, MD 20892, USA.
| | - Juliana D Siqueira
- Oncovirology Program, Brazilian National Cancer Institute, Rua Andre Cavalcanti, 37, Rio de Janeiro, RJ 20231-050, Brazil.
| | - Marianne M Garrido
- Hospital Infection Control Committee, Brazilian National Cancer Institute, Praça Cruz Vermelha, 23, Rio de Janeiro, RJ 20230-130, Brazil.
| | - Brunna M Alves
- Oncovirology Program, Brazilian National Cancer Institute, Rua Andre Cavalcanti, 37, Rio de Janeiro, RJ 20231-050, Brazil.
| | - Ana Cristina P M Pereira
- Section of Anesthesiology, Brazilian National Cancer Institute, Praça Cruz Vermelha, 23, Rio de Janeiro, RJ 20230-130, Brazil.
| | - Claudia Cicala
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, Building 10 Room 6A08, 9000 Rockville Pike, Bethesda, MD 20892, USA.
| | - James Arthos
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, Building 10 Room 6A08, 9000 Rockville Pike, Bethesda, MD 20892, USA.
| | - João P B Viola
- Program of Immunology and Tumor Biology, Brazilian National Cancer Institute, Rua Andre Cavalcanti, 37, Rio de Janeiro, RJ 20231-050, Brazil.
| | - Marcelo A Soares
- Oncovirology Program, Brazilian National Cancer Institute, Rua Andre Cavalcanti, 37, Rio de Janeiro, RJ 20231-050, Brazil; Department of Genetics, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho, 373, Rio de Janeiro, RJ 21941-590, Brazil.
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Asghar K, Farooq A, Zulfiqar B, Loya A. Review of 10 years of research on breast cancer patients: Focus on indoleamine 2,3-dioxygenase. World J Clin Oncol 2021; 12:429-436. [PMID: 34189067 PMCID: PMC8223715 DOI: 10.5306/wjco.v12.i6.429] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 12/30/2020] [Accepted: 04/08/2021] [Indexed: 02/06/2023] Open
Abstract
Therapeutic manipulation of the immune system in cancer has been an extensive area of research in the field of oncoimmunology. Immunosuppression regulates antitumour immune responses. An immunosuppressive enzyme, indoleamine 2,3-dioxygenase (IDO) mediates tumour immune escape in various malignancies including breast cancer. IDO upregulation in breast cancer cells may lead to the recruitment of regulatory T (T-regs) cells into the tumour microenvironment, thus inhibiting local immune responses and promoting metastasis. Immunosuppression induced by myeloid derived suppressor cells activated in an IDO-dependent manner may enhance the possibility of immune evasion in breast cancer. IDO overexpression has independent prognostic significance in a subtype of breast cancer of emerging interest, basal-like breast carcinoma. IDO inhibitors as adjuvant therapeutic agents may have clinical implications in breast cancer. This review proposes future prospects of IDO not only as a therapeutic target but also as a valuable prognostic marker for breast cancer.
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Affiliation(s)
- Kashif Asghar
- Department of Basic Sciences Research, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore 54000, Pakistan
| | - Asim Farooq
- Department of Clinical Research, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore 54000, Pakistan
| | - Bilal Zulfiqar
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Queensland 4111, Australia
| | - Asif Loya
- Department of Pathology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore 54000, Pakistan
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Xu QR, Tang J, Liao HY, Yu BT, He XY, Zheng YZ, Liu S. Long non-coding RNA MEG3 mediates the miR-149-3p/FOXP3 axis by reducing p53 ubiquitination to exert a suppressive effect on regulatory T cell differentiation and immune escape in esophageal cancer. J Transl Med 2021; 19:264. [PMID: 34140005 PMCID: PMC8212454 DOI: 10.1186/s12967-021-02907-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/24/2021] [Indexed: 01/27/2023] Open
Abstract
Background Long non-coding RNA (lncRNA) maternally expressed gene 3 (MEG3) has been implicated in the progression of esophageal cancer (EC). However, the specific mechanism of the involvement of MEG3 in EC development in relation to the regulation of immune escape remains uncertain. Thus, the aim of the current study was to investigate the effect of MEG3 on EC via microRNA-149-3p (miR-149-3p). Methods Gain- and loss-of-function experiments were initially performed in EC cells in addition to the establishment of a 4-nitroquinoline 1-oxide-induced EC mouse model aimed at evaluating the respective roles of forkhead box P3 (FOXP3), MEG3, miR-149-3p, mouse double minute 2 homolog (MDM2) and p53 in T cell differentiation and immune escape observed in EC. Results EC tissues were found to exhibit upregulated FOXP3 and MDM2 while MEG3, p53 and miR-149-3p were all downregulated. FOXP3 was confirmed to be a target gene of miR-149-3p with our data suggesting it reduced p53 ubiquitination and degradation by means of inhibiting MDM2. P53 was enriched in the promoter of miR-149-3p to upregulate miR-149-3p. The overexpression of MEG3, p53 or miR-149-3p or silencing FOXP3 was associated with a decline in CD25+FOXP3+CD4+ T cells, IL-10+CD4+ T cells and IL-4+CD4+ T cells in spleen tissues, IL-4, and IL-10 levels as well as C-myc, N-myc and Ki-67 expression in EC mice. Conclusion Collectively, MEG3 decreased FOXP3 expression and resulted in repressed regulatory T cell differentiation and immune escape in EC mice by upregulating miR-149-3p via MDM2-mediated p53. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-02907-1.
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Affiliation(s)
- Qi-Rong Xu
- Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, People's Republic of China
| | - Jian Tang
- Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, People's Republic of China
| | - Hong-Ying Liao
- Department of Thoracic Surgery, The Sixth Affiliated Hospital, Sun Yat-sen UniversityMedical University, No. 26, Erheng Road, Yuancun, Tianhe District, Guangzhou, 510655, Guangdong Province, P. R. China
| | - Ben-Tong Yu
- Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, People's Republic of China
| | - Xiang-Yuan He
- Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, People's Republic of China
| | - Yu-Zhen Zheng
- Department of Thoracic Surgery, The Sixth Affiliated Hospital, Sun Yat-sen UniversityMedical University, No. 26, Erheng Road, Yuancun, Tianhe District, Guangzhou, 510655, Guangdong Province, P. R. China.
| | - Sheng Liu
- Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, People's Republic of China.
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Marijt KA, Griffioen L, Blijleven L, van der Burg SH, van Hall T. Cross-presentation of a TAP-independent signal peptide induces CD8 T immunity to escaped cancers but necessitates anchor replacement. Cancer Immunol Immunother 2021; 71:289-300. [PMID: 34142235 PMCID: PMC8783882 DOI: 10.1007/s00262-021-02984-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 06/08/2021] [Indexed: 12/22/2022]
Abstract
Cancer cells frequently display defects in their antigen-processing pathway and thereby evade CD8 T cell immunity. We described a novel category of cancer antigens, named TEIPP, that emerge on cancers with functional loss of the peptide pump TAP. TEIPPs are non-mutated neoantigens despite their ‘self’ origin by virtue of their absence on normal tissues. Here, we describe the development of a synthetic long peptide (SLP) vaccine for the most immunogenic TEIPP antigen identified thus far, derived from the TAP-independent LRPAP1 signal sequence. LRPAP121–30-specific CD8 T cells were present in blood of all tested healthy donors as well as patients with non-small cell lung adenocarcinoma. SLPs with natural flanking, however, failed to be cross-presented by monocyte-derived dendritic cells. Since the C-terminus of LRPAP121–30 is an unconventional and weakly binding serine (S), we investigated if replacement of this anchor would result in efficient cross-presentation. Exchange into a valine (V) resulted in higher HLA-A2 binding affinity and enhanced T cell stimulation. Importantly, CD8 T cells isolated using the V-variant were able to bind tetramers with the natural S-variant and respond to TAP-deficient cancer cells. A functional screen with an array of N-terminal and C-terminal extended SLPs pointed at the 24-mer V-SLP, elongated at the N-terminus, as most optimal vaccine candidate. This SLP was efficiently cross-presented and consistently induced a strong polyclonal LRPAP121–30-specific CD8 T cells from the endogenous T cell repertoire. Thus, we designed a TEIPP SLP vaccine from the LRPAP1 signal sequence ready for validation in clinical trials.
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Affiliation(s)
- Koen A Marijt
- Department of Medical Oncology, C7-P, Oncode Institute, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Lisa Griffioen
- Department of Medical Oncology, C7-P, Oncode Institute, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Laura Blijleven
- Department of Medical Oncology, C7-P, Oncode Institute, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Sjoerd H van der Burg
- Department of Medical Oncology, C7-P, Oncode Institute, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Thorbald van Hall
- Department of Medical Oncology, C7-P, Oncode Institute, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
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186
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Yang A, Li MY, Zhang ZH, Wang JY, Xing Y, Ri M, Jin CH, Xu GH, Piao LX, Jin HL, Zuo HX, Ma J, Jin X. Erianin regulates programmed cell death ligand 1 expression and enhances cytotoxic T lymphocyte activity. J Ethnopharmacol 2021; 273:113598. [PMID: 33220359 DOI: 10.1016/j.jep.2020.113598] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/24/2020] [Accepted: 11/14/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dendrobium chrysotoxum Lindl is a cultivation of Dendrobium which belongs to the family of Orchidaceae. D. chrysotoxum Lindl is a traditional Chinese medicine with a wide range of clinical applications including tonic, astringent, analgesic and anti-inflammatory properties as early as the 28th century B.C. Erianin is a representative index component for the quality control of the D. chrysotoxum Lindl, which is included in the Pharmacopoeia of the People's Republic of China (2020 version). AIM OF THE STUDY To clarify the anti-tumour mechanisms of erianin in vitro and in vivo. MATERIALS AND METHODS We detected the anti-tumour activity of erianin using in vitro HeLa cell models and in vivo cervical cancer xenograft models. We performed MTT, western blot, RT-PCR, homology modeling, flow cytometry, and immunoprecipitation assays to study the proteins, genes, and pathways related to erianin's anti-tumour activity. LysoTracker Red staining was performed to detect lysosome function. Transwell, wound healing, tube formation, colony formation and EdU labelling assays were performed to determine cell proliferation, migration and invasion abilities, respectively. Cytotoxic T lymphocytes ability was confirmed using HeLa/T-cell co-culture model. RESULTS Experimental data demonstrated that erianin inhibited PD-L1 expression and induced the lysosomal degradation of PD-L1. Erianin suppressed HIF-1α synthesis through mTOR/p70S6K/4EBP1 pathway, and inhibited RAS/Raf/MEK/MAPK-ERK pathway. Immunoprecipitation experiments demonstrated that erianin reduced the interaction between RAS and HIF-1α. Experiments using a co-cultivation system of T cells and HeLa cells confirmed that erianin restored cytotoxic T lymphocytes ability to kill tumour cells. Erianin inhibited PD-L1-mediated angiogenesis, proliferation, invasion and migration. The anti-proliferative effects of erianin were supported using in vivo xenotransplantation experiments. CONCLUSIONS Collectively, these results revealed previously unknown properties of erianin and provided a new basis for improving the efficacy of immunotherapy against cervical cancer and other malignant tumours through PD-L1.
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MESH Headings
- Adaptor Proteins, Signal Transducing/metabolism
- Animals
- B7-H1 Antigen/genetics
- B7-H1 Antigen/metabolism
- Bibenzyls/pharmacology
- Bibenzyls/therapeutic use
- Cell Cycle Proteins/metabolism
- Cell Line, Tumor
- Cell Movement/drug effects
- Cell Proliferation/drug effects
- Epithelial-Mesenchymal Transition/drug effects
- Gene Expression Regulation/drug effects
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Immune Checkpoint Inhibitors/pharmacology
- Immune Checkpoint Inhibitors/therapeutic use
- Lysosomes/metabolism
- MAP Kinase Signaling System/drug effects
- Mice, Inbred BALB C
- Mice, Nude
- Molecular Docking Simulation
- Neovascularization, Pathologic/metabolism
- Phenol/pharmacology
- Phenol/therapeutic use
- Ribosomal Protein S6 Kinases, 70-kDa/metabolism
- T-Lymphocytes, Cytotoxic/drug effects
- T-Lymphocytes, Cytotoxic/immunology
- TOR Serine-Threonine Kinases/metabolism
- Vascular Endothelial Growth Factor A/metabolism
- Xenograft Model Antitumor Assays
- raf Kinases/metabolism
- ras Proteins/metabolism
- Mice
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Affiliation(s)
- Ao Yang
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Ming Yue Li
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Zhi Hong Zhang
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Jing Ying Wang
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Yue Xing
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - MyongHak Ri
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Cheng Hua Jin
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Guang Hua Xu
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Lian Xun Piao
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Hong Lan Jin
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Hong Xiang Zuo
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Juan Ma
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Xuejun Jin
- Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
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Lee J, Kim J, Sin JI. B16 melanomas evade antitumor immunity by the loss of epitope presentation and the acquisition of tumor resistance to granzyme B. Cell Immunol 2021; 367:104394. [PMID: 34198057 DOI: 10.1016/j.cellimm.2021.104394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/20/2021] [Accepted: 06/05/2021] [Indexed: 12/25/2022]
Abstract
Melanomas exhibit the highest rate of heterogeneity among cancer cell types. In this study, we tested the two types of B16 melanoma cells (B16-S0-1 and B16-S1-1) showing resistance to antitumor immunity. These cells expressed Trp2 protein. Contrary to B16 and B16-S0-1 cells, B16-S1-1 cells failed to stimulate IFN-γ responses in Trp2-specific CD8+ T cells, suggesting that B16-S1-1 cells may have lost the ability to present antigen to Ag-specific CTLs in the context of MHC class I molecules. However, B16-S0-1 cells exhibited active Stat3 and decreased Bcl-2 expression, which were found to be not associated with immune escape. B16-S0-1 cells were more resistant to granzyme B-mediated caspase activation and apoptosis than B16 cells. Thus, these data show that B16 cells escape antitumor immune responses through the loss of epitope presentation to CTLs and the acquisition of tumor cell resistance to granzyme B-mediated caspase activation.
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Affiliation(s)
- Jaeyeon Lee
- Department of Microbiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon-do 200-701, South Korea; Interdisciplinary Graduate Program in BIT Medical Convergence, School of Medicine, Kangwon National University, Chuncheon, Gangwon-do 200-701, South Korea
| | - Jiyoon Kim
- Department of Microbiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon-do 200-701, South Korea
| | - Jeong-Im Sin
- Department of Microbiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon-do 200-701, South Korea; Interdisciplinary Graduate Program in BIT Medical Convergence, School of Medicine, Kangwon National University, Chuncheon, Gangwon-do 200-701, South Korea.
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188
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Ma L, Shan W, Ding X, Yang P, Rozjan A, Yao Q. Intermittent hypoxia induces tumor immune escape in murine S180 solid tumors via the upregulation of TGF-β 1 in mice. Sleep Breath 2021; 25:719-726. [PMID: 32840731 DOI: 10.1007/s11325-020-02166-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 08/05/2020] [Accepted: 08/08/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE Studies have shown that intermittent hypoxia (IH) alters host immune functions and promotes tumor growth. However, the relevant mechanisms of these effects have not been completely elucidated. We hypothesized that IH promotes the growth of tumors by changing cytokine levels in the tumor microenvironment and inducing immune escape. METHODS Sarcoma-180 (S180) solid tumor cells were injected into the right flank of Kunming mice. The mice were then randomly divided into the IH and room air (RA) groups. The mice were euthanized 2 weeks after IH exposure, and the weight of tumor tissues was measured. Next, IL-6, IL-17, IL-10, and TNF-α levels in tumor tissues were measured via enzyme linked immunosorbent assay (ELISA), and hypoxia inducible factor-1α (HIF-1α) and transforming growth factor β1 (TGF-β1) expressions were examined through Western blot analysis. RESULTS Two weeks of IH exposure significantly accelerated the growth of S180 solid tumors. Western blot analysis results showed that the expression levels of HIF-1α and TGF-β1 in S180 tumors in the IH group were significantly upregulated compared with those in the RA group. ELISA results showed that compared with the RA group, the IH group had significantly increased TNF-α and IL-10 (P < 0.05) and significantly decreased IL-17 (P < 0.05). CONCLUSION IH might promote the growth of S180 solid tumors by inhibiting the antitumor immune response and inducing tumor immune escape via the upregulation of TGF-β1.
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Affiliation(s)
- Lijuan Ma
- Department of Physiology, School of Basic Medical Sciences, Xinjiang Medical University, No. 393, Xinyi Road, Urumqi, 830054, Xinjiang, People's Republic of China
| | - Weibi Shan
- Department of Physiology, School of Basic Medical Sciences, Xinjiang Medical University, No. 393, Xinyi Road, Urumqi, 830054, Xinjiang, People's Republic of China
| | - Xinguo Ding
- Department of EENT, People's Hospital of Xinjiang Changji, Changji, 831100, Xinjiang, People's Republic of China
| | - Pan Yang
- Department of Physiology, School of Basic Medical Sciences, Xinjiang Medical University, No. 393, Xinyi Road, Urumqi, 830054, Xinjiang, People's Republic of China
| | - Azmat Rozjan
- Department of Physiology, School of Basic Medical Sciences, Xinjiang Medical University, No. 393, Xinyi Road, Urumqi, 830054, Xinjiang, People's Republic of China
| | - Qiaoling Yao
- Department of Physiology, School of Basic Medical Sciences, Xinjiang Medical University, No. 393, Xinyi Road, Urumqi, 830054, Xinjiang, People's Republic of China.
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189
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Jongsma MLM, Neefjes J, Spaapen RM. Playing hide and seek: Tumor cells in control of MHC class I antigen presentation. Mol Immunol 2021; 136:36-44. [PMID: 34082257 DOI: 10.1016/j.molimm.2021.05.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/07/2021] [Accepted: 05/18/2021] [Indexed: 12/15/2022]
Abstract
MHC class I (MHC-I) molecules present a blueprint of the intracellular proteome to T cells allowing them to control infection or malignant transformation. As a response, pathogens and tumor cells often downmodulate MHC-I mediated antigen presentation to escape from immune surveillance. Although the fundamental rules of antigen presentation are known in detail, the players in this system are not saturated and new modules of regulation have recently been uncovered. Here, we update the understanding of antigen presentation by MHC-I molecules and how this can be exploited by tumors to prevent exposure of the intracellular proteome. This knowledge can provide new ways to improve immune responses against tumors and pathogens.
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Affiliation(s)
- M L M Jongsma
- Department of Cell and Chemical Biology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands
| | - J Neefjes
- Department of Cell and Chemical Biology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands
| | - R M Spaapen
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands; Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands; Cancer Center Amsterdam, Amsterdam, the Netherlands.
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190
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Wang LJ, Ma PY, Liu H, Cao JP, Li HM, Zheng MH. [Progress of researches on the involvement of indoleamine 2, 3-dioxygenase in regulation of parasite-host immune interactions]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:209-212. [PMID: 34008371 DOI: 10.16250/j.32.1374.2020069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Indoleamine 2, 3-dioxygenase (IDO) is an important immunoregulatory enzyme, which mediates immune effects by depleting tryptophan and producing multiple metabolites. Recently, the studies on the immune function of IDO have been mostly restricted in tumors and autoimmune diseases. Nevertheless, there are few studies pertaining to the role of IDO in parasitic diseases, notably in parasite-host immune interactions. This review mainly describes IDO-mediated immunoregulatory effects and its regulation of parasite-host interactions, so as to provide insights into the development of immune intervention schemes against parasitic diseases.
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Affiliation(s)
- L J Wang
- Department of Parasitology, Zunyi Medical University, Guizhou Key Laboratory of Gene Detection and Treatment, Zunyi 563003, China
| | - P Y Ma
- Institute of Criminal Science and Technology, Jiaozuo Municipal Public Security Bureau, Henan Province, China
| | - H Liu
- Department of Parasitology, Zunyi Medical University, Guizhou Key Laboratory of Gene Detection and Treatment, Zunyi 563003, China
| | - J P Cao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, China
| | - H M Li
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, China
| | - M H Zheng
- Department of Parasitology, Zunyi Medical University, Guizhou Key Laboratory of Gene Detection and Treatment, Zunyi 563003, China.,National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, China
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191
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Gao C, Xu YJ, Qi L, Bao YF, Zhang L, Zheng L. CircRNA VIM silence synergizes with sevoflurane to inhibit immune escape and multiple oncogenic activities of esophageal cancer by simultaneously regulating miR-124/PD-L1 axis. Cell Biol Toxicol 2021; 38:825-845. [PMID: 34018092 DOI: 10.1007/s10565-021-09613-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 04/27/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Circular RNA of vimentin (circ-VIM) is a predictor for poor prognosis of acute myeloid leukemia, but we had little information on its function in esophageal cancer (EC). Here we examined the effects of circ-VIM together with sevoflurane on immune escape and multiple oncogenic activities of EC. METHODS Bioinformatic tools, luciferase assay, and RNA immunoprecipitation were used to examine regulations between circ-VIM, miR-124-3p (miR-124), and PD-L1. CCK-8, wound healing, and Transwell assays were used to measure cell proliferation, migration, and invasion, respectively. The impacts of EC cells on cytotoxicity, proliferation, and apoptosis of CD8+ T cells were examined using LDH assay, CFSE staining, and Annexin V/PI staining, respectively. The in vivo tumorigenesis and lung metastases were assessed using xenograft model and tail vein injection of EC cells. RESULTS Significant upregulation of circ-VIM and PD-L1 and downregulation of miR-124 were detected in EC tissues or cells. Circ-VIM sponged miR-124 and released its suppression on the downstream target PD-L1. Sevoflurane, independent of circ-VIM, also upregulated miR-124 to lower PD-L1 expression. By modulating miR-124/PD-L1 axis, silencing circ-VIM and applying sevoflurane both inhibited immune escape and multiple oncogenic activities of EC in vitro, and suppressed xenograft growth and lung metastases in vivo. The inactivation of Ras/ERK signaling pathway was involved in suppression of malignant phenotypes by silencing circ-VIM and sevoflurane treatment. CONCLUSIONS Silencing circ-VIM and applying sevoflurane, by separately regulating miR-124/PD-L1 axis, presented synergistic effects in inhibiting immune escape and multiple malignant phenotypes of EC cells.
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Affiliation(s)
- Cao Gao
- Departments of Anesthesiology, The Third Affiliated Hospital of Soochow University, Changzhou, 213000, Jiangsu Province, People's Republic of China
| | - Yan-Jie Xu
- Departments of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou, 213000, Jiangsu Province, People's Republic of China
| | - Lei Qi
- Department of Gastroenterology, The Third Affiliated Hospital of Soochow University, Changzhou, 213000, Jiangsu Province, People's Republic of China
| | - Ya-Fei Bao
- Department of Thoracic Surgery, The Third Affiliated Hospital of Soochow University, No. 185, Juqian Road, Changzhou, 213000, Jiangsu Province, People's Republic of China
| | - Lei Zhang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Soochow University, No. 185, Juqian Road, Changzhou, 213000, Jiangsu Province, People's Republic of China
| | - Liang Zheng
- Department of Thoracic Surgery, The Third Affiliated Hospital of Soochow University, No. 185, Juqian Road, Changzhou, 213000, Jiangsu Province, People's Republic of China.
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192
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Ke MY, Xu T, Fang Y, Ye YP, Li ZJ, Ren FG, Lu SY, Zhang XF, Wu RQ, Lv Y, Dong J. Liver fibrosis promotes immune escape in hepatocellular carcinoma via GOLM1-mediated PD-L1 upregulation. Cancer Lett 2021; 513:14-25. [PMID: 33992711 DOI: 10.1016/j.canlet.2021.05.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 03/25/2021] [Accepted: 05/09/2021] [Indexed: 02/07/2023]
Abstract
Immune checkpoint blockade is considered a breakthrough in cancer treatment. However, with the low response rates and therapeutic resistance of patients with hepatocellular carcinoma (HCC), the challenges facing the application of this treatment are tremendous. Liver fibrosis is a key driver of tumor immune escape, the underlying mechanism has never been clarified. This study sought to explore the role of liver fibrosis in regulating tumor-infiltrating lymphocytes (TILs) and inducing tumor immunosuppression. Ninety-nine fixed HCC tissue samples were used to analyze the association between liver fibrosis and immune escape using immunohistochemistry. In HCC patients, low FIB-4 values and high CD8+ T cell infiltration were correlated with prolonged survival. Elevated expression of immune checkpoints and attenuated antitumor immunity were observed in CCl4-induced mice liver fibrosis models and human fibrotic livers compared to control group. GOLM1 levels were increased in livers of patients with fibrosis and mice in response to CCl4-induced liver fibrosis. CD8+ T cell infiltrations were significantly decreased and PD-L1 expression was significantly increased in tumor tissues from hepatocyte-specific GOLM1 transgenic mice (Alb/GOLM1 mice) inducing chemical carcinogenesis compared to their corresponding control WT mice. GOLM1 induced PD-L1 expression via EGFR pathway activation. EGFR inhibitors, especially together with anti-PD-L1 therapy, improved the efficacy of immunotherapy in HCC. These findings illustrate the importance of liver fibrosis-induced immunosuppression as a tumor-promoting mechanism. GOLM1, which is highly upregulated in the fibrotic liver, regulates tumor microenvironmental immune escape via the EGFR/PD-L1 signaling pathway. EGFR blockade may bolster the efficacy of immune checkpoint inhibitors for HCC treatment.
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193
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Hu M, Li Y, Lu Y, Wang M, Li Y, Wang C, Li Q, Zhao H. The regulation of immune checkpoints by the hypoxic tumor microenvironment. PeerJ 2021; 9:e11306. [PMID: 34012727 PMCID: PMC8109006 DOI: 10.7717/peerj.11306] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/29/2021] [Indexed: 12/14/2022] Open
Abstract
The tumor microenvironment (TME) influences the occurrence and progression of tumors, and hypoxia is an important characteristic of the TME. The expression of programmed death 1 (PD1)/programmed death-ligand 1 (PDL1), cytotoxic T-lymphocyte-associated antigen 4 (CTLA4), and other immune checkpoints in hypoxic malignant tumors is often significantly increased, and is associated with poor prognosis. The application of immune checkpoint inhibitors (ICIs) for treating lung cancer, urothelial carcinoma, and gynecological tumors has achieved encouraging efficacy; however, the rate of efficacy of ICI single-drug treatment is only about 20%. In the present review, we discuss the possible mechanisms by which the hypoxic TME regulates immune checkpoints. By activating hypoxia-inducible factor-1α (HIF-1α), regulating the adenosine (Ado)-A2aR pathway, regulating the glycolytic pathway, and driving epithelial-mesenchymal transition (EMT) and other biological pathways, hypoxia regulates the expression levels of CTLA4, PD1, PDL1, CD47, lymphocyte activation gene 3 (LAG3), T-cell immunoglobulin and mucin domain 3 (TIM3), and other immune checkpoints, which interfere with the immune effector cell anti-tumor response and provide convenient conditions for tumors to escape immune surveillance. The combination of HIF-1α inhibitors, Ado-inhibiting tumor immune microenvironment regulatory drugs, and other drugs with ICIs has good efficacy in both preclinical studies and phase I-II clinical studies. Exploring the effects of TME hypoxia on the expression of immune checkpoints and the function of infiltrating immune cells has greatly clarified the relationship between the hypoxic TME and immune escape, which is of great significance for the development of new drugs and the search for predictive markers of the efficacy of immunotherapy for treating malignant tumors. In the future, combination therapy with hypoxia pathway inhibitors and ICIs may be an effective anti-tumor treatment strategy.
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Affiliation(s)
- Min Hu
- Department of Biochemistry & Molecular Biology, Basic Medical College, Shanxi Medical University, Taiyuan, Shanxi Province, China.,Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yongfu Li
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China.,Department of Oncology, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - Yuting Lu
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Miao Wang
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yingrui Li
- Department of Biochemistry & Molecular Biology, Basic Medical College, Shanxi Medical University, Taiyuan, Shanxi Province, China.,Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Chaoying Wang
- Department of Oncology, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - Qin Li
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Hong Zhao
- Department of Biochemistry & Molecular Biology, Basic Medical College, Shanxi Medical University, Taiyuan, Shanxi Province, China
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194
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Yuan X, Yi M, Zhang W, Xu L, Chu Q, Luo S, Wu K. The biology of combination immunotherapy in recurrent metastatic head and neck cancer. Int J Biochem Cell Biol 2021; 136:106002. [PMID: 33962022 DOI: 10.1016/j.biocel.2021.106002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 04/21/2021] [Accepted: 04/30/2021] [Indexed: 02/08/2023]
Abstract
Preclinical data suggest that head and neck cancer is an intrinsically immunosuppressive disease with abnormal inflammatory components in the tumor microenvironment. The development of immune checkpoint inhibitors, which are monoclonal antibodies capable of inhibiting immune suppressive signals to prime anticancer immunity, has revolutionized the therapeutic landscape in recurrent/metastatic head and neck cancer. However, patients with head and neck cancer present primary resistance to immunotherapy. Many ongoing trials include combinations of immunotherapy with different therapeutic interventions, aiming to improve response rates and overall survival. As novel therapy strategies are leveraged, the significance of immunotherapy in recurrent/metastatic head and neck cancer continues to be revealed. This review aims to summarize combinational immunotherapy in head and neck cancer.
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Affiliation(s)
- Xun Yuan
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Ming Yi
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Wei Zhang
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Linping Xu
- Department of Medical Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China.
| | - Qian Chu
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Suxia Luo
- Department of Medical Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China.
| | - Kongming Wu
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Medical Oncology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China.
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195
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Manoutcharian K, Guzman Valle J, Gevorkian G. Neoantigen Cancer Vaccines: Real Opportunity or Another Illusion? Arch Immunol Ther Exp (Warsz) 2021; 69:12. [PMID: 33909124 DOI: 10.1007/s00005-021-00615-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/17/2021] [Indexed: 02/07/2023]
Abstract
In this communication, we will analyze some important factors and immunological phenomena related to neoantigen cancer vaccines, with particular emphasis on recently published Phase I clinical trials. Several obstacles and issues are addressed that challenge the current paradigm and inquire if neoantigens, which are essentially single-use vaccine candidates, are legitimate targets to induce protective immune responses with regard to the evolving mutational landscape. We also share insights into the striking similarities between cancer and antigenically variable pathogens and suggest that any successful vaccine against either should demonstrate a similar property: efficient induction of a diverse pool of immune cells equipped to prevent immune escape. Hence, to confront antigenic variability directly, we have employed our innovative vaccine concept, Variable Epitope Libraries, composed of large combinatorial libraries of heavily mutated epitopes, as a "universal" vaccine platform. Collectively, we offer critical analyses on key issues, which ultimately reflect on the prospective clinical relevance of personalized neoantigen vaccines which is still undefined.
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196
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Mao M, Yang L, Hu J, Liu B, Liu C, Zhang X, Liu Y, Wang P, Li H. OCT3/4 enhances tumor immune response by upregulating the TET1-dependent NRF2/MDM2 axis in bladder cancer. Genomics 2021; 113:2122-2133. [PMID: 33894310 DOI: 10.1016/j.ygeno.2021.04.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 04/07/2021] [Accepted: 04/19/2021] [Indexed: 02/04/2023]
Abstract
This study aimed to investigate the function of OCT3/4 on tumor immune escape in bladder cancer. Initially, the expression of OCT3/4, TET1, NRF2 and MDM2 was quantified in tumor tissues and cells, followed by gain- or loss-of-function studies to define their roles in cell migration, invasion and apoptosis and tumorigenicity in nude mice. Bladder cancer presented with abundant expression levels of OCT3/4, TET1, NRF2 and MDM2. We found that OCT3/4 promoted TET1 expression via binding to its promoter and that TET1 recruited MLL protein to NRF2 promoter and upregulated its expression, while NRF2 enhanced MDM2 expression. Upregulated MDM2 accelerated tumor immune escape in bladder cancer in mice. OCT3/4 knockdown suppressed the cell migration and invasion while inducing apoptosis, and consequently prevented tumor growth and immune escape in mice. Collectively, OCT3/4 may promote the progression of tumor immune escape in bladder cancer through acting as a promoter of the TET1/NRF2/MDM2 axis.
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Affiliation(s)
- Minghuan Mao
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang 110000, PR China
| | - Liang Yang
- Department of General Surgery, the Fourth Affiliated Hospital of China Medical University, Shenyang 110000, PR China
| | - Jingyao Hu
- Department of General Surgery, the Fourth Affiliated Hospital of China Medical University, Shenyang 110000, PR China
| | - Bing Liu
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang 110000, PR China
| | - Chunlai Liu
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang 110000, PR China
| | - Xiling Zhang
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang 110000, PR China
| | - Yili Liu
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang 110000, PR China
| | - Ping Wang
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang 110000, PR China.
| | - Hangyu Li
- Department of General Surgery, the Fourth Affiliated Hospital of China Medical University, Shenyang 110000, PR China.
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Abstract
Indoleamine 2,3-dioxygenase 1 (IDO1) is a heme enzyme that catalyzes the oxidation of L-tryptophan. Functionally, IDO1 has played a pivotal role in cancer immune escape via catalyzing the initial step of the kynurenine pathway, and overexpression of IDO1 is also associated with poor prognosis in various cancers. Currently, several small-molecule candidates and peptide vaccines are currently being assessed in clinical trials. Furthermore, the "proteolysis targeting chimera" (PROTAC) technology has also been successfully used in the development of IDO1 degraders, providing novel therapeutics for cancers. Herein, we review the biological functions of IDO1, structural biology and also extensively summarize medicinal chemistry strategies for the development of IDO1 inhibitors in clinical trials. The emerging PROTAC-based IDO1 degraders are also highlighted. This review may provide a comprehensive and updated overview on IDO1 inhibitors and their therapeutic potentials.
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Affiliation(s)
- Kai Tang
- School of Pharmaceutical Sciences and Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Ya-Hong Wu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Yihui Song
- School of Pharmaceutical Sciences and Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Bin Yu
- School of Pharmaceutical Sciences and Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China.
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China.
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198
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Yuan CS, Deng ZW, Qin D, Mu YZ, Chen XG, Liu Y. Hypoxia-modulatory nanomaterials to relieve tumor hypoxic microenvironment and enhance immunotherapy: Where do we stand? Acta Biomater 2021; 125:1-28. [PMID: 33639310 DOI: 10.1016/j.actbio.2021.02.030] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/01/2021] [Accepted: 02/18/2021] [Indexed: 12/12/2022]
Abstract
The past several years have witnessed the blooming of emerging immunotherapy, as well as their therapeutic potential in remodeling the immune system. Nevertheless, with the development of biological mechanisms in oncology, it has been demonstrated that hypoxic tumor microenvironment (TME) seriously impairs the therapeutic outcomes of immunotherapy. Hypoxia, caused by Warburg effect and insufficient oxygen delivery, has been considered as a primary construction element of TME and drawn tremendous attention in cancer therapy. Multiple hypoxia-modulatory theranostic agents have been facing many obstacles and challenges while offering initial therapeutic effect. Inspired by versatile nanomaterials, great efforts have been devoted to design hypoxia-based nanoplatforms to preserve drug activity, reduce systemic toxicity, provide adequate oxygenation, and eventually ameliorate hypoxic-tumor management. Besides these, recently, some curative and innovative hypoxia-related nanoplatforms have been applied in synergistic immunotherapy, especially in combination with immune checkpoint blockade (ICB), immunomodulatory therapeutics, cancer vaccine therapy and immunogenic cell death (ICD) effect. Herein, the paramount impact of hypoxia on tumor immune escape was initially described and discussed, followed by a comprehensive overview on the design tactics of multimodal nanoplatforms based on hypoxia-enabled theranostic agents. A variety of nanocarriers for relieving tumor hypoxic microenvironment were also summarized. On this basis, we presented the latest progress in the use of hypoxia-modulatory nanomaterials for synergistic immunotherapy and highlighted current challenges and plausible promises in this area in the near future. STATEMENT OF SIGNIFICANCE: Cancer immunotherapy, emerging as a novel treatment to eradicate malignant tumors, has achieved a measure of success in clinical popularity and transition. However, over the last decades, hypoxia-induced tumor immune escape has attracted enormous attention in cancer treatment. Limitations of free targeting agents have paved the path for the development of multiple nanomaterials with the hope of boosting immunotherapy. In this review, the innovative design tactics and multifunctional nanocarriers for hypoxia alleviation are summarized, and the smart nanomaterial-assisted hypoxia-modulatory therapeutics for synergistic immunotherapy and versatile biomedical applications are especially highlighted. In addition, the challenges and prospects of clinical transformation are further discussed.
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199
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Chen Y, Liu C, Zhu S, Liang X, Zhang Q, Luo X, Yuan L, Song L. PD-1/PD-L1 immune checkpoint blockade-based combinational treatment: Immunotherapeutic amplification strategies against colorectal cancer. Int Immunopharmacol 2021; 96:107607. [PMID: 33831809 DOI: 10.1016/j.intimp.2021.107607] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 12/20/2022]
Abstract
Colorectal cancer (CRC) is one of the most common malignant tumours of the digestive system, and most patients are already in an advanced stage at the time of diagnosis. Moreover, current single-use immune checkpoint inhibitors (ICIs), such as programmed cell death-1 (PD-1) and programmed cell death-ligand 1 (PD-L1) inhibitors, are only effective for some advanced CRC patients with microsatellite instability-high (MSI-H), and most patients may be unable to benefit from it due to a lack of CD8+ T cells in the tumour microenvironment. Additionally, the subtype of CRC has emerged as a factor affecting treatment responses, with immunogenic subtypes carrying a better prognosis. In this review, we discuss bottlenecks encountered with the single use of PD-1/PD-L1 inhibitors and summarize the research status and mechanisms of PD-1/PD-L1 inhibitor-based immunotherapeutic amplification strategies, including chemotherapy, radiotherapy, photomediated therapy and other immunotherapies used for colorectal cancer.
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Affiliation(s)
- Yuxiang Chen
- School of Medical and Life Sciences/Reproductive & Women-children Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, PR China
| | - Chi Liu
- School of Medical and Life Sciences/Reproductive & Women-children Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, PR China
| | - Shaomi Zhu
- School of Medical and Life Sciences/Reproductive & Women-children Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, PR China
| | - Xin Liang
- School of Medical and Life Sciences/Reproductive & Women-children Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, PR China
| | - Qinxiu Zhang
- School of Medical and Life Sciences/Reproductive & Women-children Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, PR China
| | - Xiaohong Luo
- School of Medical and Life Sciences/Reproductive & Women-children Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, PR China
| | - Lan Yuan
- School of Medical and Life Sciences/Reproductive & Women-children Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, PR China.
| | - Linjiang Song
- School of Medical and Life Sciences/Reproductive & Women-children Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, PR China.
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200
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Gao Y, Xu Y, Zhao S, Qian L, Song T, Zheng J, Zhang J, Chen B. Growth differentiation factor-15 promotes immune escape of ovarian cancer via targeting CD44 in dendritic cells. Exp Cell Res 2021; 402:112522. [PMID: 33771482 DOI: 10.1016/j.yexcr.2021.112522] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 02/10/2021] [Accepted: 02/12/2021] [Indexed: 02/06/2023]
Abstract
Immune escape is the main cause of the low response rate to immunotherapy for cancer, including ovarian cancer. Growth differentiation factor-15 (GDF-15) inhibits immune cell function. However, only few reports described the mechanism. Therefore, the aim of this study was to investigate the mechanism of immune escape regulated by GDF-15 in ovarian cancer. Ovarian cancer patients and healthy women were enrolled in this study. Immunohistochemistry and ELISA were performed to measure GDF-15 expression. Immunoprecipitation combined with mass spectrometry, surface plasmon resonance, and co-immunoprecipitation assay were used to evaluate the interaction between GDF-15 and the surface molecules of DCs. Immunofluorescence analysis, flow cytometry and transwell assay were used to evaluate additional effects of GDF-15 on DCs. The results showed that GDF-15 expression was higher in the ovarian cancer patients compared to that in the healthy women. The TIMER algorithm revealed that highly GDF-15 expression is associated with immune DC infiltration in immunoreactive high-grade serous carcinoma. A further study showed that GDF-15 suppressed DCs maturation, as well as IL-12p40 and TNF-α secretion, the length and number of protrusions and the migration. More importantly, CD44 in the surface of DCs interacted with GDF-15. The overexpression of CD44 in DCs resulted in the suppression of the inhibitory effect of GDF-15 on the length and number of DC synapses. In DCs overexpressing CD44 the inhibition of GDF-15 on the expression of CD11c, CD83 and CD86 was decreased, while in DCs with a knockdown of CD44 the inhibition was further enhanced. Knockdown of CD44 in DCs enhanced the inhibitory effect of GDF-15 on DC migration, while the overexpression of CD44 inhibited the inhibitory effect of GDF-15 on DC migration. In conclusion, the present study suggested that GDF-15 might facilitate ovarian cancer immune escape by interacting with CD44 in DCs to inhibit their function.
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Affiliation(s)
- Yunge Gao
- Department of Obstetrics and Gynecology, Xijing Hospital, Fourth Military Medical University, No.127 Changle Road (West), Xi'an City, Shannxi Province, 710032, China
| | - Ying Xu
- Department of Obstetrics and Gynecology, Xijing Hospital, Fourth Military Medical University, No.127 Changle Road (West), Xi'an City, Shannxi Province, 710032, China
| | - Shuhui Zhao
- Department of Obstetrics and Gynecology, Xijing Hospital, Fourth Military Medical University, No.127 Changle Road (West), Xi'an City, Shannxi Province, 710032, China
| | - Luomeng Qian
- Department of Obstetrics and Gynecology, Xijing Hospital, Fourth Military Medical University, No.127 Changle Road (West), Xi'an City, Shannxi Province, 710032, China
| | - Tingting Song
- Department of Obstetrics and Gynecology, Xijing Hospital, Fourth Military Medical University, No.127 Changle Road (West), Xi'an City, Shannxi Province, 710032, China
| | - Jiao Zheng
- Department of Obstetrics and Gynecology, Xijing Hospital, Fourth Military Medical University, No.127 Changle Road (West), Xi'an City, Shannxi Province, 710032, China
| | - Jianfang Zhang
- Department of Obstetrics and Gynecology, Xijing Hospital, Fourth Military Medical University, No.127 Changle Road (West), Xi'an City, Shannxi Province, 710032, China
| | - Biliang Chen
- Department of Obstetrics and Gynecology, Xijing Hospital, Fourth Military Medical University, No.127 Changle Road (West), Xi'an City, Shannxi Province, 710032, China.
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