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Yu M, Yu H, Wang H, Xu X, Sun Z, Chen W, Yu M, Liu C, Jiang M, Zhang X. Tumor‑associated macrophages activated in the tumor environment of hepatocellular carcinoma: Characterization and treatment (Review). Int J Oncol 2024; 65:100. [PMID: 39239752 PMCID: PMC11387121 DOI: 10.3892/ijo.2024.5688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 08/08/2024] [Indexed: 09/07/2024] Open
Abstract
Hepatocellular carcinoma (HCC) tissue is rich in dendritic cells, T cells, B cells, macrophages, natural killer cells and cellular stroma. Together they form the tumor microenvironment (TME), which is also rich in numerous cytokines. Tumor‑associated macrophages (TAMs) are involved in the regulation of tumor development. TAMs in HCC receive stimuli in different directions, polarize in different directions and release different cytokines to regulate the development of HCC. TAMs are mostly divided into two cell phenotypes: M1 and M2. M1 TAMs secrete pro‑inflammatory mediators, and M2 TAMs secrete a variety of anti‑inflammatory and pro‑tumorigenic substances. The TAM polarization in HCC tumors is M2. Both direct and indirect methods for TAMs to regulate the development of HCC are discussed. TAMs indirectly support HCC development by promoting peripheral angiogenesis and regulating the immune microenvironment of the TME. In terms of the direct regulation between TAMs and HCC cells, the present review mainly focuses on the molecular mechanism. TAMs are involved in both the proliferation and apoptosis of HCC cells to regulate the quantitative changes of HCC, and stimulate the related invasive migratory ability and cell stemness of HCC cells. The present review aims to identify immunotherapeutic options based on the mechanisms of TAMs in the TME of HCC.
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Affiliation(s)
- Mingkai Yu
- School of Clinical Medicine and Basic Medical Science, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan, Shandong 250000, P.R. China
| | - Haixia Yu
- Pharmacy College, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan, Shandong 250000, P.R. China
| | - Hongmei Wang
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Xiaoya Xu
- School of Clinical Medicine and Basic Medical Science, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan, Shandong 250000, P.R. China
| | - Zhaoqing Sun
- School of Clinical Medicine and Basic Medical Science, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan, Shandong 250000, P.R. China
| | - Wenshuai Chen
- School of Clinical Medicine and Basic Medical Science, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan, Shandong 250000, P.R. China
| | - Miaomiao Yu
- School of Clinical Medicine and Basic Medical Science, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan, Shandong 250000, P.R. China
| | - Chunhua Liu
- Department of Physiology and Neurobiology, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan, Shandong 250000, P.R. China
| | - Mingchun Jiang
- Department of Physiology and Neurobiology, Shandong First Medical University (Shandong Academy of Medical Sciences), Jinan, Shandong 250000, P.R. China
| | - Xiaowei Zhang
- Department of Gastroenterology, The Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong 271000, P.R. China
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2
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Li Z, Duan D, Li L, Peng D, Ming Y, Ni R, Liu Y. Tumor-associated macrophages in anti-PD-1/PD-L1 immunotherapy for hepatocellular carcinoma: recent research progress. Front Pharmacol 2024; 15:1382256. [PMID: 38957393 PMCID: PMC11217528 DOI: 10.3389/fphar.2024.1382256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 05/22/2024] [Indexed: 07/04/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the cancers that seriously threaten human health. Immunotherapy serves as the mainstay of treatment for HCC patients by targeting the programmed cell death protein 1/programmed cell death 1 ligand 1 (PD-1/PD-L1) axis. However, the effectiveness of anti-PD-1/PD-L1 treatment is limited when HCC becomes drug-resistant. Tumor-associated macrophages (TAMs) are an important factor in the negative regulation of PD-1 antibody targeted therapy in the tumor microenvironment (TME). Therefore, as an emerging direction in cancer immunotherapy research for the treatment of HCC, it is crucial to elucidate the correlations and mechanisms between TAMs and PD-1/PD-L1-mediated immune tolerance. This paper summarizes the effects of TAMs on the pathogenesis and progression of HCC and their impact on HCC anti-PD-1/PD-L1 immunotherapy, and further explores current potential therapeutic strategies that target TAMs in HCC, including eliminating TAMs in the TME, inhibiting TAMs recruitment to tumors and functionally repolarizing M2-TAMs (tumor-supportive) to M1-TAMs (antitumor type).
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Affiliation(s)
| | | | | | | | | | - Rui Ni
- Department of Pharmacy, Daping Hospital, Army Medical University, Chongqing, China
| | - Yao Liu
- Department of Pharmacy, Daping Hospital, Army Medical University, Chongqing, China
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3
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Yuan Y, Wu D, Li J, Huang D, Zhao Y, Gao T, Zhuang Z, Cui Y, Zheng DY, Tang Y. Mechanisms of tumor-associated macrophages affecting the progression of hepatocellular carcinoma. Front Pharmacol 2023; 14:1217400. [PMID: 37663266 PMCID: PMC10470150 DOI: 10.3389/fphar.2023.1217400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 06/23/2023] [Indexed: 09/05/2023] Open
Abstract
Tumor-associated macrophages (TAMs) are essential components of the immune cell stroma of hepatocellular carcinoma. TAMs originate from monocytic myeloid-derived suppressor cells, peripheral blood monocytes, and kupffer cells. The recruitment of monocytes to the HCC tumor microenvironment is facilitated by various factors, leading to their differentiation into TAMs with unique phenotypes. TAMs can directly activate or inhibit the nuclear factor-κB, interleukin-6/signal transducer and signal transducer and activator of transcription 3, Wnt/β-catenin, transforming growth factor-β1/bone morphogenetic protein, and extracellular signal-regulated kinase 1/2 signaling pathways in tumor cells and interact with other immune cells via producing cytokines and extracellular vesicles, thus affecting carcinoma cell proliferation, invasive and migratory, angiogenesis, liver fibrosis progression, and other processes to participate in different stages of tumor progression. In recent years, TAMs have received much attention as a prospective treatment target for HCC. This review describes the origin and characteristics of TAMs and their mechanism of action in the occurrence and development of HCC to offer a theoretical foundation for further clinical research of TAMs.
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Affiliation(s)
- Yi Yuan
- Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Dailin Wu
- Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Jing Li
- Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Dan Huang
- Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Yan Zhao
- Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Tianqi Gao
- Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Zhenjie Zhuang
- Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Ying Cui
- Department of Psychiatry, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Da-Yong Zheng
- Department of Oncology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
- Department of Hepatology, TCM-Integrated Hospital of Southern Medical University, Guangzhou, Guangdong, China
- Department of Hepatopancreatobiliary, Cancer Center, Southern Medical University, Guangzhou, Guangdong, China
| | - Ying Tang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
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4
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Xia W, Singh N, Goel S, Shi S. Molecular Imaging of Innate Immunity and Immunotherapy. Adv Drug Deliv Rev 2023; 198:114865. [PMID: 37182699 DOI: 10.1016/j.addr.2023.114865] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/17/2023] [Accepted: 05/03/2023] [Indexed: 05/16/2023]
Abstract
The innate immune system plays a key role as the first line of defense in various human diseases including cancer, cardiovascular and inflammatory diseases. In contrast to tissue biopsies and blood biopsies, in vivo imaging of the innate immune system can provide whole body measurements of immune cell location and function and changes in response to disease progression and therapy. Rationally developed molecular imaging strategies can be used in evaluating the status and spatio-temporal distributions of the innate immune cells in near real-time, mapping the biodistribution of novel innate immunotherapies, monitoring their efficacy and potential toxicities, and eventually for stratifying patients that are likely to benefit from these immunotherapies. In this review, we will highlight the current state-of-the-art in noninvasive imaging techniques for preclinical imaging of the innate immune system particularly focusing on cell trafficking, biodistribution, as well as pharmacokinetics and dynamics of promising immunotherapies in cancer and other diseases; discuss the unmet needs and current challenges in integrating imaging modalities and immunology and suggest potential solutions to overcome these barriers.
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Affiliation(s)
- Wenxi Xia
- Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, UT 84112, United States
| | - Neetu Singh
- Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, UT 84112, United States
| | - Shreya Goel
- Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, UT 84112, United States; Department of Biomedical Engineering, University of Utah, Salt Lake City, UT 84112, United States; Department of Radiology and Imaging Sciences, University of Utah, Salt Lake City, UT 84112, United States
| | - Sixiang Shi
- Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, UT 84112, United States; Department of Radiology and Imaging Sciences, University of Utah, Salt Lake City, UT 84112, United States.
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5
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Targeting Tumor-Associated Macrophages for Imaging. Pharmaceutics 2022; 15:pharmaceutics15010144. [PMID: 36678773 PMCID: PMC9866064 DOI: 10.3390/pharmaceutics15010144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/25/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023] Open
Abstract
As an important component of the tumor immune microenvironment (TIME), tumor-associated macrophages (TAMs) occupy a significant niche in tumor margin aggregation and respond to changes in the TIME. Thus, targeting TAMs is important for tumor monitoring, surgical guidance and efficacy evaluation. Continuously developing nanoprobes and imaging agents paves the way toward targeting TAMs for precise imaging and diagnosis. This review summarizes the commonly used nanomaterials for TAM targeting imaging probes, including metal-based nanoprobes (iron, manganese, gold, silver), fluorine-19-based nanoprobes, radiolabeled agents, near-infrared fluorescence dyes and ultrasonic nanobubbles. Additionally, the prospects and challenges of designing nanomaterials for imaging and diagnosis (targeting efficiency, pharmacokinetics, and surgery guidance) are described in this review. Notwithstanding, TAM-targeting nanoplatforms provide great potential for imaging, diagnosis and therapy with a greater possibility of clinical transformation.
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6
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Chen S, Zeng X, Su T, Xiao H, Lin M, Peng Z, Peng S, Kuang M. Combinatory local ablation and immunotherapies for hepatocellular carcinoma: Rationale, efficacy, and perspective. Front Immunol 2022; 13:1033000. [PMID: 36505437 PMCID: PMC9726793 DOI: 10.3389/fimmu.2022.1033000] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/25/2022] [Indexed: 11/24/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the leading cause of cancer-related death worldwide. Local ablation, such as radiofrequency ablation, microwave ablation, cryoablation and irreversible electroporation, etc., are well established in elimination and control of HCC. However, high recurrence rate after local ablation remains the biggest challenge for HCC management. Novel and effective therapeutic strategies to improve long-term survival are urgently needed. Accumulating studies have reported the role of ablation in modulating the tumor signaling pathway and the immune microenvironment to both eliminate residual/metastatic tumor and promote tumor progression. Ablation has been shown to elicit tumor-specific immune responses by inducing massive cell death and releasing tumor antigen. Immunotherapies that unleash the immune system have the potential to enhance the anti-tumor immunity induced by ablation. Multiple combinatory strategies have been explored in preclinical and clinical studies. In this review, we comprehensively summarize the latest progress on different mechanisms underlying the effects of ablation on tumor cells and tumor microenvironment. We further analyze the clinical trials testing the combination of ablation and immunotherapies, and discuss the possible role of immunomodulation to boost the anti-tumor effects of ablation and prevent HCC recurrence.
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Affiliation(s)
- Shuling Chen
- Institute of Diagnostic and Interventional Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xuezhen Zeng
- Center of Hepato-Pancreato-Biliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China,Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Tianhong Su
- Department of Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Han Xiao
- Institute of Diagnostic and Interventional Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Manxia Lin
- Institute of Diagnostic and Interventional Ultrasound, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhenwei Peng
- Department of Radiation Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Sui Peng
- Department of Radiation Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Ming Kuang
- Center of Hepato-Pancreato-Biliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China,Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China,*Correspondence: Ming Kuang,
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7
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Zhang G, Ye HR, Sun Y, Guo ZZ. Ultrasound Molecular Imaging and Its Applications in Cancer Diagnosis and Therapy. ACS Sens 2022; 7:2857-2864. [PMID: 36190830 DOI: 10.1021/acssensors.2c01468] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Ultrasound imaging is regarded as a highly sensitive imaging modality used in routine clinical examinations. Over the last several decades, ultrasound contrast agents have been widely applied in ultrasound molecular cancer imaging to improve the detection, characterization, and quantification of tumors. To date, a few new potential preclinical and clinical applications regarding ultrasound molecular cancer imaging are being investigated. This review presents an overview of the various kinds of ultrasound contrast agents employed in ultrasound molecular imaging and advanced imaging techniques using these contrast agents. Additionally, we discuss the recent enormous development of ultrasound contrast agents in the relevant preclinical and clinical applications, highlight the recent challenges which need to be overcome to accelerate the clinical translation, and discuss the future perspective of ultrasound molecular cancer imaging using various contrast agents. As a highly promising and valuable tumor-specific imaging technique, it is believed that ultrasound molecular imaging will pave an accurate and efficient way for cancer diagnosis.
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Affiliation(s)
- Ge Zhang
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, China, 430070.,Department of Medical Ultrasound, China Resources and Wisco General Hospital, Wuhan University of Science and Technology, Wuhan, China, 430080
| | - Hua-Rong Ye
- Department of Medical Ultrasound, China Resources and Wisco General Hospital, Wuhan University of Science and Technology, Wuhan, China, 430080
| | - Yao Sun
- College of Chemistry, Central China Normal University, Wuhan, China, 430079
| | - Zhen-Zhong Guo
- Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, China, 430070
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8
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Li X, Wang R, Zhang Y, Han S, Gan Y, Liang Q, Ma X, Rong P, Wang W, Li W. Molecular imaging of tumor-associated macrophages in cancer immunotherapy. Ther Adv Med Oncol 2022; 14:17588359221076194. [PMID: 35251314 PMCID: PMC8891912 DOI: 10.1177/17588359221076194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 01/10/2022] [Indexed: 12/20/2022] Open
Abstract
Tumor-associated macrophages (TAMs), the most abundant inflammatory cell group in the tumor microenvironment, play an essential role in tumor immune regulation. The infiltration degree of TAMs in the tumor microenvironment is closely related to tumor growth and metastasis, and TAMs have become a promising target in tumor immunotherapy. Molecular imaging is a new interdisciplinary subject that combines medical imaging technology with molecular biology, nuclear medicine, radiation medicine, and computer science. The latest progress in molecular imaging allows the biological processes of cells to be visualized in vivo, which makes it possible to better understand the density and distribution of macrophages in the tumor microenvironment. This review mainly discusses the application of targeting TAM in tumor immunotherapy and the imaging characteristics and progress of targeting TAM molecular probes using various imaging techniques.
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Affiliation(s)
- Xiaoying Li
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Ruike Wang
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Yangnan Zhang
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Shuangze Han
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Yu Gan
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Qi Liang
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Xiaoqian Ma
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Pengfei Rong
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Wei Wang
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Wei Li
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
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9
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Wang K, Wang C, Jiang H, Zhang Y, Lin W, Mo J, Jin C. Combination of Ablation and Immunotherapy for Hepatocellular Carcinoma: Where We Are and Where to Go. Front Immunol 2022; 12:792781. [PMID: 34975896 PMCID: PMC8714655 DOI: 10.3389/fimmu.2021.792781] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 11/25/2021] [Indexed: 12/12/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the third leading cause of cancer-related deaths worldwide and is increasing in incidence. Local ablative therapy plays a leading role in HCC treatment. Radiofrequency (RFA) is one of the first-line therapies for early local ablation. Other local ablation techniques (e.g., microwave ablation, cryoablation, irreversible electroporation, phototherapy.) have been extensively explored in clinical trials or cell/animal studies but have not yet been established as a standard treatment or applied clinically. On the one hand, single treatment may not meet the needs. On the other hand, ablative therapy can stimulate local and systemic immune effects. The combination strategy of immunotherapy and ablation is reasonable. In this review, we briefly summarized the current status and progress of ablation and immunotherapy for HCC. The immune effects of local ablation and the strategies of combination therapy, especially synergistic strategies based on biomedical materials, were discussed. This review is hoped to provide references for future researches on ablative immunotherapy to arrive to a promising new era of HCC treatment.
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Affiliation(s)
- Kunpeng Wang
- Department of General Surgery, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Cong Wang
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Hao Jiang
- Department of General Surgery, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Yaqiong Zhang
- Department of Clinical Laboratory, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Weidong Lin
- Department of General Surgery, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Jinggang Mo
- Department of General Surgery, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Chong Jin
- Department of General Surgery, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
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10
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Zeng F, Du M, Chen Z. Nanosized Contrast Agents in Ultrasound Molecular Imaging. Front Bioeng Biotechnol 2021; 9:758084. [PMID: 34912789 PMCID: PMC8666542 DOI: 10.3389/fbioe.2021.758084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/08/2021] [Indexed: 11/13/2022] Open
Abstract
Applying nanosized ultrasound contrast agents (nUCAs) in molecular imaging has received considerable attention. nUCAs have been instrumental in ultrasound molecular imaging to enhance sensitivity, identification, and quantification. nUCAs can achieve high performance in molecular imaging, which was influenced by synthetic formulations and size. This review presents an overview of nUCAs from different synthetic formulations with a discussion on imaging and detection technology. Then we also review the progress of nUCAs in preclinical application and highlight the recent challenges of nUCAs.
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Affiliation(s)
- Fengyi Zeng
- The First Affiliated Hospital, Medical Imaging Centre, Hengyang Medical School, University of South China, Hengyang, China.,Institute of Medical Imaging, Hengyang Medical School, University of South China, Hengyang, China.,Laboratory of Ultrasound Molecular Imaging, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Meng Du
- The First Affiliated Hospital, Medical Imaging Centre, Hengyang Medical School, University of South China, Hengyang, China.,Institute of Medical Imaging, Hengyang Medical School, University of South China, Hengyang, China
| | - Zhiyi Chen
- The First Affiliated Hospital, Medical Imaging Centre, Hengyang Medical School, University of South China, Hengyang, China.,Institute of Medical Imaging, Hengyang Medical School, University of South China, Hengyang, China
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