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Lennartz P, Thölke D, Bashiri Dezfouli A, Pilz M, Lobinger D, Messner V, Zanth H, Ainslie K, Kafshgari MH, Rammes G, Ballmann M, Schlegel M, Foulds GA, Pockley AG, Schmidt-Graf F, Multhoff G. Biomarkers in Adult-Type Diffuse Gliomas: Elevated Levels of Circulating Vesicular Heat Shock Protein 70 Serve as a Biomarker in Grade 4 Glioblastoma and Increase NK Cell Frequencies in Grade 3 Glioma. Biomedicines 2023; 11:3235. [PMID: 38137456 PMCID: PMC10741018 DOI: 10.3390/biomedicines11123235] [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: 08/31/2023] [Revised: 11/21/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
The presence of circulating Hsp70 levels and their influence on the immunophenotype of circulating lymphocyte subsets were examined as diagnostic/prognostic biomarkers for the overall survival (OS) in patients with IDH-mutant WHO grade 3 oligodendroglioma, astrocytoma, and IDH-wildtype grade 4 glioblastoma (GBM). Vesicular and free Hsp70 in the plasma/serum was measured using the Hsp70-exo and R&D Systems DuoSet® Hsp70 ELISAs. The immunophenotype and membrane Hsp70 status was determined by multiparameter flow cytometry on peripheral blood lymphocytes and single-cell suspensions of tumor specimens and cultured cells. Compared to healthy controls, circulating vesicular Hsp70 levels were significantly increased in patients with GBM, concomitant with a significant decrease in the proportion of CD3+/CD4+ helper T cells, whereas the frequency of NK cells was most prominently increased in patients with grade 3 gliomas. Elevated circulating Hsp70 levels and a higher prevalence of activated CD3-/CD56+/CD94+/CD69+ NK cells were associated with an improved OS in grade 3 gliomas, whereas high Hsp70 levels and low CD3+/CD4+ frequencies were associated with an adverse OS in GBM. It is assumed that a reduced membrane Hsp70 density on grade 4 versus grade 3 primary glioma cells and reduced CD3+/CD4+ T cell counts in GBM might drive an immunosuppressive tumor microenvironment.
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Affiliation(s)
- Philipp Lennartz
- Central Institute for Translational Cancer Research Technische Universität München (TranslaTUM), Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany; (P.L.); (D.T.); (A.B.D.); (V.M.); (H.Z.)
- Department of Radiation Oncology, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany
| | - Dennis Thölke
- Central Institute for Translational Cancer Research Technische Universität München (TranslaTUM), Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany; (P.L.); (D.T.); (A.B.D.); (V.M.); (H.Z.)
- Department of Radiation Oncology, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany
| | - Ali Bashiri Dezfouli
- Central Institute for Translational Cancer Research Technische Universität München (TranslaTUM), Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany; (P.L.); (D.T.); (A.B.D.); (V.M.); (H.Z.)
- Department of Otolaryngology, Head and Neck Surgery, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany
| | - Mathias Pilz
- Central Institute for Translational Cancer Research Technische Universität München (TranslaTUM), Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany; (P.L.); (D.T.); (A.B.D.); (V.M.); (H.Z.)
- Department of Radiation Oncology, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany
| | - Dominik Lobinger
- Department of Thoracic Surgery, München Klinik Bogenhausen, Lehrkrankenhaus der TUM, 81925 Munich, Germany;
| | - Verena Messner
- Central Institute for Translational Cancer Research Technische Universität München (TranslaTUM), Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany; (P.L.); (D.T.); (A.B.D.); (V.M.); (H.Z.)
- Department of Radiation Oncology, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany
| | - Hannah Zanth
- Central Institute for Translational Cancer Research Technische Universität München (TranslaTUM), Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany; (P.L.); (D.T.); (A.B.D.); (V.M.); (H.Z.)
- Department of Radiation Oncology, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany
| | - Karen Ainslie
- Central Institute for Translational Cancer Research Technische Universität München (TranslaTUM), Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany; (P.L.); (D.T.); (A.B.D.); (V.M.); (H.Z.)
- Department of Radiation Oncology, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany
| | - Morteza Hasanzadeh Kafshgari
- Central Institute for Translational Cancer Research Technische Universität München (TranslaTUM), Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany; (P.L.); (D.T.); (A.B.D.); (V.M.); (H.Z.)
- Department of Biomedical Electronics, Central Instititute for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany
| | - Gerhard Rammes
- Department of Anaesthesiology and Intensive Care Medicine, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany (M.S.)
| | - Markus Ballmann
- Department of Anaesthesiology and Intensive Care Medicine, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany (M.S.)
| | - Martin Schlegel
- Department of Anaesthesiology and Intensive Care Medicine, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany (M.S.)
| | - Gemma Ann Foulds
- John van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK; (G.A.F.); (A.G.P.)
| | - Alan Graham Pockley
- John van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK; (G.A.F.); (A.G.P.)
| | - Friederike Schmidt-Graf
- Department of Neurology, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany;
| | - Gabriele Multhoff
- Central Institute for Translational Cancer Research Technische Universität München (TranslaTUM), Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany; (P.L.); (D.T.); (A.B.D.); (V.M.); (H.Z.)
- Department of Radiation Oncology, Klinikum rechts der Isar, TUM School of Medicine and Health, 81675 Munich, Germany
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Sun Y, Xiao W, Yu Y, Jiang Y, Xiao Z, Huang D, Zhong T, Li J, Xiang X, He Y, Li Z. Colorectal cancer-derived extracellular vesicles containing HSP70 enhance macrophage phagocytosis by up-regulating MARCO expression. Exp Cell Res 2023; 426:113565. [PMID: 36958650 DOI: 10.1016/j.yexcr.2023.113565] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/14/2023] [Accepted: 03/18/2023] [Indexed: 03/25/2023]
Abstract
In recent years, we have realized that extracellular vesicles (EVs) play a critical role in regulating the intercellular communication between tumor and immune cells in the tumor microenvironment (TME). Tumor-derived extracellular vesicles (TDEVs) profoundly affect the functional changes of tumor-associated macrophages (TAMs) and promote their M2 polarization. Meanwhile, macrophages have a strong phagocytic ability in phagocytosing apoptotic cells. Especially in the course of chemotherapy or radiotherapy, TAMs can phagocytose and remove apoptotic tumor cells, showing anti-inflammatory and pro-tumor effects. However, the underlying mechanisms by which TDEVs regulate macrophage phagocytosis of apoptotic tumor cells have not been fully elucidated. In this study, we focused on the effect of colorectal cancer-derived extracellular vesicles (CRC-EVs) on macrophages. We demonstrated that CRC-EVs enhanced macrophage phagocytosis of apoptotic CRC cells. We then determined that heat shock protein 70 (HSP70) carried in CRC-EVs was responsible for this effect by using mass spectrometry-based proteomic analysis and the CRISPR-Cas9 system. Through transcriptome sequencing of macrophages, we found that the enhanced phagocytosis of macrophages was mainly due to the up-regulation of the macrophage receptor with collagenous structure (MARCO). In addition, we confirmed that the up-regulation of MARCO was mediated by the AKT-STAT3 signaling pathway. Taken together, this study revealed a novel EVs-mediated macrophage phagocytosis mechanism involved in the clearance of apoptotic tumor cells in TME. Targeting TDEVs may have potential therapeutic applications in tumor treatment.
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Affiliation(s)
- Yu Sun
- Guangdong Provincial Key Laboratory of Digestive Cancer Research; Digestive Medicine Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China; Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Wenjun Xiao
- Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Yang Yu
- Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Yuchen Jiang
- Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Zhijie Xiao
- Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Defa Huang
- Department of Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, 341004, China
| | - Tianyu Zhong
- Department of Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, 341004, China
| | - Jiang Li
- Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Xi Xiang
- Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Yulong He
- Guangdong Provincial Key Laboratory of Digestive Cancer Research; Digestive Medicine Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China; Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China.
| | - Zhigang Li
- Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China.
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Hu C, Yang J, Qi Z, Wu H, Wang B, Zou F, Mei H, Liu J, Wang W, Liu Q. Heat shock proteins: Biological functions, pathological roles, and therapeutic opportunities. MedComm (Beijing) 2022; 3:e161. [PMID: 35928554 PMCID: PMC9345296 DOI: 10.1002/mco2.161] [Citation(s) in RCA: 115] [Impact Index Per Article: 57.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 12/12/2022] Open
Abstract
The heat shock proteins (HSPs) are ubiquitous and conserved protein families in both prokaryotic and eukaryotic organisms, and they maintain cellular proteostasis and protect cells from stresses. HSP protein families are classified based on their molecular weights, mainly including large HSPs, HSP90, HSP70, HSP60, HSP40, and small HSPs. They function as molecular chaperons in cells and work as an integrated network, participating in the folding of newly synthesized polypeptides, refolding metastable proteins, protein complex assembly, dissociating protein aggregate dissociation, and the degradation of misfolded proteins. In addition to their chaperone functions, they also play important roles in cell signaling transduction, cell cycle, and apoptosis regulation. Therefore, malfunction of HSPs is related with many diseases, including cancers, neurodegeneration, and other diseases. In this review, we describe the current understandings about the molecular mechanisms of the major HSP families including HSP90/HSP70/HSP60/HSP110 and small HSPs, how the HSPs keep the protein proteostasis and response to stresses, and we also discuss their roles in diseases and the recent exploration of HSP related therapy and diagnosis to modulate diseases. These research advances offer new prospects of HSPs as potential targets for therapeutic intervention.
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Affiliation(s)
- Chen Hu
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Jing Yang
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Ziping Qi
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Hong Wu
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Beilei Wang
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Fengming Zou
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
| | - Husheng Mei
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- University of Science and Technology of ChinaHefeiAnhuiP. R. China
| | - Jing Liu
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
- University of Science and Technology of ChinaHefeiAnhuiP. R. China
| | - Wenchao Wang
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
- University of Science and Technology of ChinaHefeiAnhuiP. R. China
| | - Qingsong Liu
- Anhui Province Key Laboratory of Medical Physics and TechnologyInstitute of Health and Medical TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefeiAnhuiP. R. China
- Hefei Cancer HospitalChinese Academy of SciencesHefeiAnhuiP. R. China
- University of Science and Technology of ChinaHefeiAnhuiP. R. China
- Precision Medicine Research Laboratory of Anhui ProvinceHefeiAnhuiP. R. China
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Terasaki M, Murase W, Kamakura Y, Kawakami S, Kubota A, Kojima H, Ohta T, Tanaka T, Maeda H, Miyashita K, Mutoh M. A Biscuit Containing Fucoxanthin Prevents Colorectal Carcinogenesis in Mice. Nutr Cancer 2022; 74:3651-3661. [PMID: 35695489 DOI: 10.1080/01635581.2022.2086703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Fucoxanthin (Fx) is a critical pigment required for photosynthesis in brown algae and microalgae. Fx is also a dietary marine carotenoid that with potent anticancer activity in vitro and in vivo. Some popular light meals for increased satiety, such as biscuits, cereals, and crackers, are frequently fortified with micronutrients for human health benefits. However, data on the anticancer potential of Fx-supplemented light meals in humans and animal models remain limited. In the present study, we investigated the anticancer effects of a Fx-supplemented biscuit using a carcinogenic murine azoxymethane/dextran sodium sulfate (AOM/DSS) model. We observed that periodic administration of biscuits containing 0.3% Fx (Fx-biscuit) at an interval of 3 days (each 15 h) per week for 15 weeks significantly inhibited colorectal carcinogenesis in AOM/DSS mice. Comprehensive gene analysis demonstrated that the Fx-biscuit significantly altered the expression of 138 genes in the colorectal mucosal tissue of the mice. In particular, the expression of heat shock protein 70 (HSP70) genes, Hspa1b (-35.7-fold) and Hspa1a (-34.9-fold), was markedly downregulated. HSP70 is a polyfunctional chaperone protein that is involved in cancer development. Compared to the control-biscuit group, the number of cells with markedly high fluorescence for HSP70 protein (HSP70high) in colorectal mucosal crypts and adenocarcinomas significantly reduced by 0.3- and 0.2-fold, respectively, in the Fx-biscuit group. Our results suggested that Fx-biscuit possesses chemopreventive potential in the colorectal cancer of AOM/DSS mice via the downregulation of HSP70.
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Affiliation(s)
- Masaru Terasaki
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan.,Advanced Research Promotion Center, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - Wataru Murase
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - Yukino Kamakura
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - Serina Kawakami
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - Atsuhito Kubota
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - Hiroyuki Kojima
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan.,Advanced Research Promotion Center, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - Tohru Ohta
- Advanced Research Promotion Center, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
| | - Takuji Tanaka
- Department of Diagnostic Pathology and Research Center of Diagnostic Pathology, Gifu Municipal Hospital, Gifu, Japan
| | - Hayato Maeda
- Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Aomori, Japan
| | - Kazuo Miyashita
- Center for Industry-University Collaboration, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
| | - Michihiro Mutoh
- Department of Molecular-Targeting Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Szczuka I, Wierzbicki J, Serek P, Szczęśniak-Sięga BM, Krzystek-Korpacka M. Heat Shock Proteins HSPA1 and HSP90AA1 Are Upregulated in Colorectal Polyps and Can Be Targeted in Cancer Cells by Anti-Inflammatory Oxicams with Arylpiperazine Pharmacophore and Benzoyl Moiety Substitutions at Thiazine Ring. Biomolecules 2021; 11:1588. [PMID: 34827586 PMCID: PMC8615942 DOI: 10.3390/biom11111588] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/13/2021] [Accepted: 10/24/2021] [Indexed: 12/15/2022] Open
Abstract
Heat shock proteins HSPA1/Hsp70α and HSP90AA1/Hsp90α are crucial for cancer growth but their expression pattern in colorectal polyps or whether they can be modulated by oxicams is unknown. We quantified (RTqPCR) HSPA1 and HSP90AA1 expression in 50 polyp-normal pairs in relation to polyp malignancy potential and examined the effect of piroxicam, meloxicam and five novel analogues on HSPA1 and HSP90AA1 expression (mRNA/protein) in colorectal adenocarcinoma lines. HSPA1 and HSP90AA1 were upregulated in polyps by 3- and 2.9-fold. Expression ratios were higher in polyps with higher dysplasia grade and dominant villous growth pattern, mostly a result of diminished gene expression in normal tissue. Classic oxicams had negligible/non-significant effect on HSP expression. Their most effective analogue inhibited HSPA1 protein and gene by 2.5-fold and 5.7-fold in Caco-2 and by 11.5-fold and 6.8-fold in HCT116 and HSPA1 protein in HT-29 by 1.9-fold. It downregulated HSP90AA1 protein and gene by 1.9-fold and 3.7-fold in Caco-2 and by 2-fold and 5.0-fold in HCT116. HSPA1 and HSP90AA1 are upregulated in colorectal polyps reflecting their potential for malignancy. HSPA1 in cancer cells and, to lesser degree, HSP90AA1 can be reduced by oxicam analogues with thiazine ring substituted via propylene linker by arylpiperazine pharmacophore with fluorine substituents and by benzoyl moiety.
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Affiliation(s)
- Izabela Szczuka
- Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland; (I.S.); (P.S.)
| | - Jarosław Wierzbicki
- Department of Minimally Invasive Surgery and Proctology, Wroclaw Medical University, 50-556 Wroclaw, Poland;
| | - Paweł Serek
- Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland; (I.S.); (P.S.)
| | | | - Małgorzata Krzystek-Korpacka
- Department of Biochemistry and Immunochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland; (I.S.); (P.S.)
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Linder M, Pogge von Strandmann E. The Role of Extracellular HSP70 in the Function of Tumor-Associated Immune Cells. Cancers (Basel) 2021; 13:cancers13184721. [PMID: 34572948 PMCID: PMC8466959 DOI: 10.3390/cancers13184721] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/08/2021] [Accepted: 09/14/2021] [Indexed: 12/24/2022] Open
Abstract
Simple Summary The intracellular heat shock protein 70 (HSP70) is essential for cells to respond to stress, for instance, by refolding damaged proteins or inhibiting apoptosis. However, in cancer, HSP70 is overexpressed and can translocate to the extracellular milieu, where it emerged as an important modulator of tumor-associated immune cells. By targeting the tumor microenvironment (TME) through different mechanisms, extracellular HSP70 can trigger pro- or anti-tumorigenic responses. Therefore, understanding the pathways and their consequences is crucial for therapeutically targeting cancer and its surrounding microenvironment. In this review, we summarize current knowledge on the translocation of extracellular HSP70. We further elucidate its functions within the TME and provide an overview of potential therapeutic options. Abstract Extracellular vesicles released by tumor cells (T-EVs) are known to contain danger-associated molecular patterns (DAMPs), which are released in response to cellular stress to alert the immune system to the dangerous cell. Part of this defense mechanism is the heat shock protein 70 (HSP70), and HSP70-positive T-EVs are known to trigger anti-tumor immune responses. Moreover, extracellular HSP70 acts as an immunogen that contributes to the cross-presentation of major histocompatibility complex (MHC) class I molecules. However, the release of DAMPs, including HSP70, may also induce chronic inflammation or suppress immune cell activity, promoting tumor growth. Here, we summarize the current knowledge on soluble, membrane-bound, and EV-associated HSP70 regarding their functions in regulating tumor-associated immune cells in the tumor microenvironment. The molecular mechanisms involved in the translocation of HSP70 to the plasma membrane of tumor cells and its release via exosomes or soluble proteins are summarized. Furthermore, perspectives for immunotherapies aimed to target HSP70 and its receptors for cancer treatment are discussed and presented.
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Heat Shock Proteins 27, 70, and 110: Expression and Prognostic Significance in Colorectal Cancer. Cancers (Basel) 2021; 13:cancers13174407. [PMID: 34503216 PMCID: PMC8431468 DOI: 10.3390/cancers13174407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/26/2021] [Accepted: 08/29/2021] [Indexed: 12/21/2022] Open
Abstract
Heat shock proteins (HSPs) are evolutionarily conserved chaperones occurring in virtually all living organisms playing a key role in the maintenance of cellular homeostasis. They are constitutively expressed to prevent and repair protein damage following various physiological and environmental stressors. HSPs are overexpressed in various types of cancers to provide cytoprotective function, and they have been described to influence prognosis and response to therapy. Moreover, they have been used as a tumor marker in blood serum biochemistry and they represent a potentially promising therapeutic target. To clarify prognostic significance of two canonical HSPs (27 and 70) and less known HSP110 (previously known as HSP105) in colorectal carcinoma (CRC), we retrospectively performed HSP immunohistochemistry on tissue microarrays from formalin-fixed paraffin-embedded tumor tissue from 297 patients with known follow-up. Survival analysis (univariate Kaplan-Meier analysis with the log-rank test and multivariate Cox regression) revealed significantly shorter overall survival (OS, mean 5.54 vs. 7.07, p = 0.033) and borderline insignificantly shorter cancer specific survival (CSS, mean 6.3 vs. 7.87 years, p = 0.066) in patients with HSP70+ tumors. In the case of HSP27+ tumors, there was an insignificantly shorter OS (mean 6.36 vs. 7.13 years, p = 0.2) and CSS (mean 7.17 vs. 7.95 years, p = 0.2). HSP110 showed no significant impact on survival. Using Pearson's chi-squared test, there was a significant association of HSP27 and HSP70 expression with advanced cancer stage. HSP27+ tumors were more frequently mismatch-repair proficient and vice versa (p = 0.014), and they occurred more often in female patients and vice versa (p = 0.015). There was an enrichment of left sided tumors with HSP110+ compared to the right sided (p = 0.022). In multivariate Cox regression adjusted on the UICC stage, grade and right/left side; both HSPs 27 and 70 were not independent survival predictors (p = 0.616 & p = 0.586). In multivariate analysis, only advanced UICC stage (p = 0) and right sided localization (p = 0.04) were independent predictors of worse CSS. In conclusion, from all three HSPs examined in our study, only HSP70 expression worsened CRC prognosis, although stage-dependent. The contribution of this article may be seen as a large survival analysis of HSPs 27 and 70 and the largest analysis of HSP110 described in CRC.
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