1
|
Wang Y, Liao J, Yang YJ, Wang Z, Qin F, Zhu SM, Zheng H, Wang YP. Effect of membrane-bound complement regulatory proteins on tumor cell sensitivity to complement-dependent cytolysis triggered by heterologous expression of the α-gal xenoantigen. Oncol Lett 2018; 15:9061-9068. [PMID: 29805637 PMCID: PMC5958734 DOI: 10.3892/ol.2018.8478] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 02/28/2018] [Indexed: 02/05/2023] Open
Abstract
Engineering malignant cells to express a heterologous α-gal antigen can induce heterograft hyperacute rejection, resulting in complement-dependent cytolysis (CDC) of tumor cells, which has been considered as a novel strategy for antitumor therapy. A549 cells engineered to express Galα1-3Galβ1-4GlcNAc-R (α-gal) epitope exhibited strong resistance to CDC treated by normal human serum (NHS) in a previous study. We hypothesized that the expression of membrane-bound complement regulatory proteins (mCRPs) decay accelerating factor (CD55) and protectin (CD59) influenced the efficacy of the α-gal/NHS-mediated antitumor effect to tumor cells in vitro. The present study confirmed that A549 cells expressed high levels of CD55 and CD59, whereas Lovo cells expressed relatively low levels of these proteins. A549 and Lovo cells transfected with plasmids containing or lacking the α-gal epitope were evaluated for their susceptibility to CDC by NHS and detected using a trypan blue exclusion assay. α-gal-expressing Lovo (Lovo-GT) cells were almost completely killed by α-gal-mediated CDC following incubation with 50% NHS, whereas no cytolysis was observed in α-gal expressing A549 (A549-GT) cells. Abrogating CD55 and CD59 function from A549-GT cells by various concentrations of phosphatidylinositol-specific phospholipase C (PI-PLC) or blocking antibodies increased the susceptibility of cells to CDC, and the survival rate decreased significantly comparing to the controls (P<0.05). The findings of the present study indicated that using the α-gal/NHS system to eliminate tumor cells via inducing the complement cascade reaction might represent a feasible approach for the treatment of cancer. However, high levels of mCRP expression may limit the efficacy of this approach. Therefore, an improved efficacy of cancer cell killing may be achieved by combining strategies of heterologous α-gal expression and mCRP downregulation.
Collapse
Affiliation(s)
- Yu Wang
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Juan Liao
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Ya-Jun Yang
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Zhu Wang
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Feng Qin
- Basic Medical Faculty, Dali Medical College, Dali, Yunnan 671003, P.R. China
| | - Sheng-Ming Zhu
- Department of Oncology, Affiliated Taihe Hospital, Yunyang Medical College, Shiyan, Hubei 442000, P.R. China
| | - Hong Zheng
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yan-Ping Wang
- Laboratory of Molecular Diagnosis of Cancer, Clinical Research Center for Breast, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| |
Collapse
|
2
|
Borlongan CV, Yu G, Matsukawa N, Yasuhara T, Hara K, Xu L. Article Commentary: Cell Transplantation: Stem Cells in the Spotlight. Cell Transplant 2017; 14:519-526. [DOI: 10.3727/000000005783982774] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- Cesar V. Borlongan
- Neurology/Insttitute of Molecular Medicind & Genetics/School of Graduate Studies, Medical College of Georgia, Augusta, GA, USA
- Research/Affiliations Service Line, Augusta VAMC, Augusta, GA, USA
| | - Guolong Yu
- Neurology/Insttitute of Molecular Medicind & Genetics/School of Graduate Studies, Medical College of Georgia, Augusta, GA, USA
- Research/Affiliations Service Line, Augusta VAMC, Augusta, GA, USA
| | - Noriyuki Matsukawa
- Neurology/Insttitute of Molecular Medicind & Genetics/School of Graduate Studies, Medical College of Georgia, Augusta, GA, USA
- Research/Affiliations Service Line, Augusta VAMC, Augusta, GA, USA
| | - Takao Yasuhara
- Neurology/Insttitute of Molecular Medicind & Genetics/School of Graduate Studies, Medical College of Georgia, Augusta, GA, USA
- Research/Affiliations Service Line, Augusta VAMC, Augusta, GA, USA
| | - Koichi Hara
- Neurology/Insttitute of Molecular Medicind & Genetics/School of Graduate Studies, Medical College of Georgia, Augusta, GA, USA
- Research/Affiliations Service Line, Augusta VAMC, Augusta, GA, USA
| | - Lin Xu
- Neurology/Insttitute of Molecular Medicind & Genetics/School of Graduate Studies, Medical College of Georgia, Augusta, GA, USA
- Research/Affiliations Service Line, Augusta VAMC, Augusta, GA, USA
| |
Collapse
|
3
|
SanMartin A, Borlongan CV. Article Commentary: Cell Transplantation: Toward Cell Therapy. Cell Transplant 2017; 15:665-73. [PMID: 17176618 DOI: 10.3727/000000006783981666] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Affiliation(s)
- Agneta SanMartin
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery, University of South Florida, Tampa, FL 33612, USA.
| | | |
Collapse
|
4
|
Koopmans J, de Haan A, Bruin E, van der Gun I, van Dijk H, Rozing J, de Leij L, Staal M. Porcine Fetal Ventral Mesencephalic Cells are Targets for Primed Xenoreactive Human T Cells. Cell Transplant 2017; 15:381-7. [PMID: 16970280 DOI: 10.3727/000000006783981846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Xenotransplantation of porcine fetal ventral mesencephalic (pfVM) cells to overcome the dopamine shortage in the striatum of patients with Parkinson's disease seems a viable alternative to allotransplantion of human fetal donor tissue, especially because the latter is complicated by both practical and ethical issues. There is, however, little known about the xenospecific immune responses involved in such an intracerebral xenotransplantation. The aim of our study was to investigate whether 1) naive human peripheral blood mononuclear cells (PMBC) display cytotoxicity against pfVM cells of E28 pig fetuses, and 2) priming of human PBMC by xenogeneic antigen presenting cells (APC) modulates pfVM-directed cellular cytotoxicity. For this purpose fresh PMBC from nine individual donors were primed by incubation with either irradiated pfVM cells or porcine spleen cells (PSC) as APC in the presence of IL-2 for 1 week before assessing cytotoxicity in a 51Cr release assay. Also, direct NK reactivity and antibody-dependent cellular cytotoxicity (ADCC) of fresh PMBC against pfVM cells was assessed. No direct cytotoxicity of naive cells (either NK reactivity or ADCC) against pfVM cells could be determined. Only PMBC primed with PSC were capable of lysing pfVM cells. PBMC primed with pfVM cells did not show cytolytic capacity towards pfVM. Interestingly, large differences in xenospecific T-cell responses exist between individual donor PBMC. Thus, human T cells are capable of killing pfVM cells in a xenoreactive response, but only after priming by donor APC. The large interindividual differences between human donors in their xenoreactive response may influence patient selection for xenotransplantation and chances of graft survival for individual patients.
Collapse
Affiliation(s)
- Jan Koopmans
- Department of Neurosurgery, University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands.
| | | | | | | | | | | | | | | |
Collapse
|
5
|
Wu Y, Wang Y, Qin F, Wang Z, Wang Y, Yang Y, Zheng H, Wang Y. CD55 limits sensitivity to complement-dependent cytolysis triggered by heterologous expression of α-gal xenoantigen in colon tumor cells. Am J Physiol Gastrointest Liver Physiol 2014; 306:G1056-64. [PMID: 24763553 DOI: 10.1152/ajpgi.00464.2013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Engineering cancer cells to express heterologous antigen α-gal and induce the destruction of tumor cells depending on the complement cascade may be a promising strategy of tumor therapy. However, the feasibility and effect of using α-gal to induce colorectal adenocarcinoma cell line cytolysis is not yet known. In this study, we evaluated α-gal expression's ability to sensitize human colorectal adenocarcinoma cell lines to complement attack in cell lines LoVo, SW620, and Ls-174T. Nearly all α-gal-expressing LoVo and SW620 cells were killed by normal human serum (NHS), but α-gal-expressing Ls-174T cells showed no significant lysis. We analyzed the expression levels of membrane-bound complement regulatory proteins (mCRPs) on the three cell lines, and their protective role in α-gal-mediated activation of the complement. LoVo showed no expression of any of the three proteins. CD59 was strongly expressed by SW620 and Ls-174T. CD46 and CD55 varied between the two cell lines. CD46 on SW620 was only half the intensity of CD46 on Ls-174T. Ls-174T showed a notable expression of CD55, while expression of CD55 on SW620 was not detected. The sensitivity of Ls-174T expressing α-gal to NHS greatly increased following the downregulation of CD46 and CD55 with short hairpin RNA (shRNA). However, there is no increase in cell killing when CD59 expression was diminished. Our findings suggest that the use of α-gal as antigen to induce tumor cell killing may be a potential therapeutic strategy in colon cancer and that CD55 plays a primary role in conferring resistance to lysis.
Collapse
Affiliation(s)
- Yanxia Wu
- Laboratory of Molecular Diagnosis of Cancer, West China Hospital, Sichuan University, Chengdu, China; State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yaogeng Wang
- Laboratory of Molecular Diagnosis of Cancer, West China Hospital, Sichuan University, Chengdu, China; State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Feng Qin
- Basic Medical Faculty, Dali Medical College, Dali, China; and
| | - Zhu Wang
- Laboratory of Molecular Diagnosis of Cancer, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Wang
- Laboratory of Molecular Diagnosis of Cancer, West China Hospital, Sichuan University, Chengdu, China
| | | | - Hong Zheng
- Laboratory of Molecular Diagnosis of Cancer, West China Hospital, Sichuan University, Chengdu, China; State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yanping Wang
- Laboratory of Molecular Diagnosis of Cancer, West China Hospital, Sichuan University, Chengdu, China; State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China;
| |
Collapse
|
6
|
Current World Literature. Curr Opin Organ Transplant 2006. [DOI: 10.1097/01.mot.0000218938.96009.b4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|