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Xing Y, Zhang F, Yang T, Yin C, Yang A, Yan B, Zhao J. Augmented antitumor immune responses of HER2-targeted pyroptotic induction by long-lasting recombinant immunopyroptotins. Heliyon 2024; 10:e30444. [PMID: 38737283 PMCID: PMC11088320 DOI: 10.1016/j.heliyon.2024.e30444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/14/2024] Open
Abstract
Pyroptosis is a well-documented form of programmed cell death caused by the gasdermin-driven perforation of cell membranes. Selective induction of pyroptosis in tumor cells represents a promising antitumor strategy to enhance the efficacy of immunotherapy. In this study, we established a recombinant protein-based immunopyroptotin strategy that led to the intratumoral induction of pyroptosis for HER2-directed therapy. Long-lasting immunopyroptotins were constructed by sequentially fusing the humanized anti-HER2 single-chain antibody P1h3, albumin-binding peptide (ABD035 or dAb7h8), cathepsin B-cleavable peptide B2, endosome-disruptive peptide E5C3, and active pyroptotic effector gasdermin D-N fragment (GN). After purification, we evaluated the cytotoxicity and antitumor immune responses primarily induced by the immunopyroptotins in HER2-overexpressing breast cancer cells. The resulting ABD035-immunoGN and dAb7h8-immunoGN showed improved in vitro cytotoxicity in HER2-overexpressing cancer cells compared with that in the immunotBid that we previously generated to induce tumor cell apoptosis. The binding of long-lasting immunopyroptotins to albumin increased the half-life by approximately 7-fold in nude mice. The enhanced antitumor efficacy of long-lasting immunopyroptotins was confirmed in both N87 tumor-bearing T cell-deficient mice and 4T1-hHER2 bilateral tumor-bearing immunocompetent mice. Immunopyroptotin treatment elicited systemic antitumor immune responses involving CD8+ T cells and mature dendritic cells and upregulated the expression of proinflammatory cytokines, leading to sustained remission of non-injected distant tumors. This study extends the repertoire of antibody-based therapeutics through the tumor-targeted delivery of a constitutively active pore-forming gasdermin-N fragment, which shows great potential for pyroptosis-based antitumor therapy.
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Affiliation(s)
- Yuqi Xing
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers and Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, 710032, China
| | - Feiyu Zhang
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Tian Yang
- Department of Intensive Care Medicine, Bethune International Peace Hospital, Hebei, 050082, China
| | - Chunhui Yin
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers and Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, 710032, China
| | - Angang Yang
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers and Department of Immunology, Fourth Military Medical University, Xi'an, 710032, China
| | - Bo Yan
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers and Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, 710032, China
| | - Jing Zhao
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers and Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, 710032, China
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Le VTB, Tsimbalyuk S, Lim EQ, Solis A, Gawat D, Boeck P, Lim EQ, Renolo R, Forwood JK, Kuhn ML. The Vibrio cholerae SpeG Spermidine/Spermine N-Acetyltransferase Allosteric Loop and β6-β7 Structural Elements Are Critical for Kinetic Activity. Front Mol Biosci 2021; 8:645768. [PMID: 33928120 PMCID: PMC8076852 DOI: 10.3389/fmolb.2021.645768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/16/2021] [Indexed: 11/27/2022] Open
Abstract
Polyamines regulate many important biological processes including gene expression, intracellular signaling, and biofilm formation. Their intracellular concentrations are tightly regulated by polyamine transport systems and biosynthetic and catabolic pathways. Spermidine/spermine N-acetyltransferases (SSATs) are catabolic enzymes that acetylate polyamines and are critical for maintaining intracellular polyamine homeostasis. These enzymes belong to the Gcn5-related N-acetyltransferase (GNAT) superfamily and adopt a highly conserved fold found across all kingdoms of life. SpeG is an SSAT protein found in a variety of bacteria, including the human pathogen Vibrio cholerae. This protein adopts a dodecameric structure and contains an allosteric site, making it unique compared to other SSATs. Currently, we have a limited understanding of the critical structural components of this protein that are required for its allosteric behavior. Therefore, we explored the importance of two key regions of the SpeG protein on its kinetic activity. To achieve this, we created various constructs of the V. cholerae SpeG protein, including point mutations, a deletion, and chimeras with residues from the structurally distinct and non-allosteric human SSAT protein. We measured enzyme kinetic activity toward spermine for ten constructs and crystallized six of them. Ultimately, we identified specific portions of the allosteric loop and the β6-β7 structural elements that were critical for enzyme kinetic activity. These results provide a framework for further study of the structure/function relationship of SpeG enzymes from other organisms and clues toward the structural evolution of members of the GNAT family across domains of life.
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Affiliation(s)
- Van Thi Bich Le
- Department of Chemistry & Biochemistry, San Francisco State University, San Francisco, CA, United States
| | - Sofiya Tsimbalyuk
- School of Biomedical Science, Charles Sturt University, Wagga Wagga, NSW, Australia
| | - Ee Qi Lim
- Department of Chemistry & Biochemistry, San Francisco State University, San Francisco, CA, United States
| | - Allan Solis
- Department of Chemistry & Biochemistry, San Francisco State University, San Francisco, CA, United States
| | - Darwin Gawat
- Department of Chemistry & Biochemistry, San Francisco State University, San Francisco, CA, United States
| | - Paloma Boeck
- Department of Chemistry & Biochemistry, San Francisco State University, San Francisco, CA, United States
| | - Ee Qing Lim
- Department of Chemistry & Biochemistry, San Francisco State University, San Francisco, CA, United States
| | - Rosselini Renolo
- Department of Chemistry & Biochemistry, San Francisco State University, San Francisco, CA, United States
| | - Jade K. Forwood
- School of Biomedical Science, Charles Sturt University, Wagga Wagga, NSW, Australia
| | - Misty L. Kuhn
- Department of Chemistry & Biochemistry, San Francisco State University, San Francisco, CA, United States
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Yan F, Li X, Li N, Zhang R, Wang Q, Ru Y, Hao X, Ni J, Wang H, Wu G. Immunoproapoptotic molecule scFv-Fdt-tBid modified mesenchymal stem cells for prostate cancer dual-targeted therapy. Cancer Lett 2017; 402:32-42. [PMID: 28529067 DOI: 10.1016/j.canlet.2017.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 04/24/2017] [Accepted: 05/11/2017] [Indexed: 01/14/2023]
Abstract
Highly efficient target therapy is urgently needed for prostate cancer with overexpression of γ-seminoprotein (γ-SM). Recent studies indicated that mesenchymal stem cells (MSCs) are attractive candidate for cell-based, targeted therapy due to their tumor tropism. Here we designed a dual-target therapeutic system in which MSCs were engineered to produce and deliver scFv-Fdt-tBid, a novel γ-SM-targeted immunoproapoptotic molecule. Such engineered MSCs (MSC.scFv-Fdt-tBid) would home to tumor sites and release the fusion protein to induce the apoptosis of prostate cancer cells. Our data demonstrated that scFv-Fdt-tBid showed a selective, potent and dose-dependent inhibition for γ-SM-positive cells (LNCaP, C4-2, 22Rv1) rather than γ-SM-negative cells and MSCs. Importantly, MSC.scFv-Fdt-tBid caused cell death through an apoptosis-dependent manner. Further, the tropism of MSC.scFv-Fdt-tBid to prostate cancer was verified both in vitro and in vivo. Finally, the in vivo experiments demonstrated that MSC.scFv-Fdt-tBid significantly inhibited γ-SM-positive tumor growth without toxic side effects. Collectively, this study represented a novel immunoproapoptotic molecule scFv-Fdt-tBid for γ-SM-positive tumors and demonstrated the therapeutic efficiency and safety of scFv-Fdt-tBid-modified MSCs against prostate cancers.
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Affiliation(s)
- Fengqi Yan
- Department of Urology, Tang Du Hospital, The Fourth Military Medical University, Shaanxi, Xian, 710038, China; Department of Urology, Xi Jing Hospital, The Fourth Military Medical University, Shaanxi, Xian, 710032, China
| | - Xia Li
- Department of Biochemistry and Molecular Biology, The Fourth Military Medical University, Shaanxi, Xian, 710032, China
| | - Nan Li
- Department of Respiratory Medicine, The Third Hospital of Xi'an, Shaanxi, Xian, 710018, China
| | - Rui Zhang
- Department of Biochemistry and Molecular Biology, The Fourth Military Medical University, Shaanxi, Xian, 710032, China
| | - Qinhao Wang
- Department of Biochemistry and Molecular Biology, The Fourth Military Medical University, Shaanxi, Xian, 710032, China
| | - Yi Ru
- Department of Biochemistry and Molecular Biology, The Fourth Military Medical University, Shaanxi, Xian, 710032, China
| | - Xiaoke Hao
- Department of Laboratory, Xi Jing Hospital, The Fourth Military Medical University, Shaanxi, Xian, 710032, China
| | - Jianxin Ni
- Department of Urology, Xi Jing Hospital, The Fourth Military Medical University, Shaanxi, Xian, 710032, China
| | - He Wang
- Department of Urology, Tang Du Hospital, The Fourth Military Medical University, Shaanxi, Xian, 710038, China.
| | - Guojun Wu
- Department of Urology, Xi Jing Hospital, The Fourth Military Medical University, Shaanxi, Xian, 710032, China.
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Jiang K, Li J, Yin J, Ma Q, Yan B, Zhang X, Wang L, Wang L, Liu T, Zhang Y, Fan Q, Yang A, Qiu X, Ma B. Targeted delivery of CXCR4-siRNA by scFv for HER2+ breast cancer therapy. Biomaterials 2015; 59:77-87. [DOI: 10.1016/j.biomaterials.2015.04.030] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 04/10/2015] [Accepted: 04/14/2015] [Indexed: 01/24/2023]
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Potent killing of HBV-related hepatocellular carcinoma by a chimeric protein of anti-HBsAg single-chain antibody and truncated Bid. Biomaterials 2013; 34:4880-9. [DOI: 10.1016/j.biomaterials.2013.03.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 03/15/2013] [Indexed: 01/18/2023]
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Zhou BG, Liu MY, Qiu XC, Xu YM, Fan QY, Yang AG, Zhang Y, Xia H. A novel recombinant immunocasp-6 fusion gene specifically and efficiently suppresses HER2-overexpressing osteosarcoma. Oncol Rep 2013; 29:276-82. [PMID: 23135254 DOI: 10.3892/or.2012.2122] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 09/25/2012] [Indexed: 11/06/2022] Open
Abstract
Osteosarcoma is the most common primary malignant tumor of bone for adolescent or children. The poor prognosis of patients, due to its remote metastasis, has led to the exploration of more effective and less toxic treatments. Immunotherapy is a promising strategy for the treatment of human epidermal growth factor receptor 2 (HER2)-overexpressing tumors. Herein, we describe experiments conducted with a fusion gene, immunocasp-6, which was generated by fusing a HER2-specific single-chain Ab, a single-chain Pseudomonas exotoxin A and an active caspase-6 which can directly cleave lamin A leading to nucleus damage inducing programmed cell death. We demonstrated that immunocasp-6 can specifically and efficiently recognize and induce apoptosis in HER2-overexpressing osteosarcoma cells in vitro. The immunocasp-6 was transferred into BALB/c athymic mice bearing human osteosarcoma by i.m. injection of liposome-encapsulated pCMV-immunocap-6. Expression of immunocasp-6 not only strongly inhibited tumor growth and significantly prolonged animal survival, but also greatly prevented tumor metastasis. Our data showed that the immuno-casp-6 can specifically recognize HER2-overexpressing osteosarcoma cells, can also promptly attack their nucleus and induce apoptotic death, suggesting the potential of this strategy for the treatment of human HER2-overexpressing tumors.
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Affiliation(s)
- Ben-Gen Zhou
- Graduate School of Southern Medical University, Department of Orthopaedics, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou, Guangdong, PR China
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Jia LT, Chen SY, Yang AG. Cancer gene therapy targeting cellular apoptosis machinery. Cancer Treat Rev 2012; 38:868-76. [PMID: 22800735 DOI: 10.1016/j.ctrv.2012.06.008] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 06/21/2012] [Accepted: 06/22/2012] [Indexed: 01/14/2023]
Abstract
The unraveling of cellular apoptosis machinery provides novel targets for cancer treatment, and gene therapy targeting this suicidal system has been corroborated to cause inflammation-free autonomous elimination of neoplastic cells. The apoptotic machinery can be targeted by introduction of a gene encoding an inducer, mediator or executioner of apoptotic cell death or by inhibition of anti-apoptotic gene expression. Strategies targeting cancer cells, which are achieved by selective gene delivery, specific gene expression or secretion of target proteins via genetic modification of autologous cells, dictate the outcome of apoptosis-based cancer gene therapy. Despite so far limited clinical success, gene therapy targeting the apoptotic machinery has great potential to benefit patients with threatening malignancies provided the availability of efficient and specific gene delivery and administration systems.
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Affiliation(s)
- Lin-Tao Jia
- Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an 710032, China.
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Ren JL, Meng YL, Hu B, Jia LT, Zhang R, Xu YM, Xie QS, Zhang YQ, Jin BQ, Chen SY, Wang T, Yang AG. The effect of direct translocation across endosomes on the cytotoxicity of the recombinant protein e23sFv-Fdt-casp6 to HER2 positive gastric cancer cells. Biomaterials 2011; 32:7641-50. [DOI: 10.1016/j.biomaterials.2011.06.071] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 06/28/2011] [Indexed: 01/27/2023]
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Wang F, Ren J, Qiu XC, Wang LF, Zhu Q, Zhang YQ, Huan Y, Meng YL, Yao LB, Chen SY, Xu YM, Yang AG. Selective Cytotoxicity to HER2-Positive Tumor Cells by a Recombinant e23sFv-TD-tBID Protein Containing a Furin Cleavage Sequence. Clin Cancer Res 2010; 16:2284-94. [DOI: 10.1158/1078-0432.ccr-09-2367] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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