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Borin DB, Castrejón-Arroyo K, Cruz-Nolasco A, Peña-Rico M, Sagrillo MR, Santos RCV, de Baco LS, Pérez-Picaso L, Camacho L, Navarro-Mtz AK. Parasporin A13-2 of Bacillus thuringiensis Isolates from the Papaloapan Region (Mexico) Induce a Cytotoxic Effect by Late Apoptosis against Breast Cancer Cells. Toxins (Basel) 2021; 13:toxins13070476. [PMID: 34357948 PMCID: PMC8309972 DOI: 10.3390/toxins13070476] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/30/2021] [Accepted: 07/03/2021] [Indexed: 11/16/2022] Open
Abstract
The protein A13-2 was obtained from Bacillus thuringiensis strains isolated from the Papaloapan watershed region (Oaxaca, Mexico). The cytotoxic activity of parasporal inclusions was studied against breast cancer cell line (MCF-7) and normal cell (human peripheral blood mononuclear cells). The MTT, the formation of reactive species, nitric oxide, free cell DNA, and the type of death cellular were assessed. The protein A13-2 shows the highest cytotoxic activity against MCF-7 (13% cell viability at 6 µg/mL), the extracellular DNA increases, and it shows no stress for reactive species or nitric oxide. Besides, the A13-2 parasporin shows no toxicity to peripheral blood mononuclear cells, and it does not generate changes in nitric oxide levels or free cell DNA. Due to that, the cytotoxic effect of A13-2 was specific for MCF-7, and it does not affect normal cells. According to microscopy and flow cytometry, A13-2 parasporin leads to the death of MCF-7 cells by late apoptosis together with necrosis and without allowing the triggering of the survival mechanisms. When analyzed together, our results show for the first time that the A13-2 protein isolated from Mexican strains of B. thuringiensis preferentially kills MCF- 7 (cancer cells) over HEK 293 and PBMC cell lines (normal cells), thus representing a promising alternative for the treatment of cancer breast.
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Affiliation(s)
- Diego Becker Borin
- Instituto de Biotecnología, Universidad del Papaloapan, Tuxtepec, Oaxaca 68301, Mexico; (D.B.B.); (M.P.-R.)
| | - Karen Castrejón-Arroyo
- División de Estudios de Posgrado, Universidad del Papaloapan, Tuxtepec, Oaxaca 68301, Mexico; (K.C.-A.); (A.C.-N.)
| | - Alain Cruz-Nolasco
- División de Estudios de Posgrado, Universidad del Papaloapan, Tuxtepec, Oaxaca 68301, Mexico; (K.C.-A.); (A.C.-N.)
| | - Miguel Peña-Rico
- Instituto de Biotecnología, Universidad del Papaloapan, Tuxtepec, Oaxaca 68301, Mexico; (D.B.B.); (M.P.-R.)
| | - Michele Rorato Sagrillo
- Graduate Program in Nanoscience, Franciscan University, Santa Maria, Rio Grande do Sul 97010-032, Brazil;
| | - Roberto C. V. Santos
- Oral Microbiology Laboratory, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul 97065-060, Brazil;
| | - Lucas Silva de Baco
- Oncologia, Franciscan University, Santa Maria, Rio Grande do Sul 97015-450, Brazil;
| | - Lemuel Pérez-Picaso
- Instituto de Química Aplicada, Universidad del Papaloapan, Tuxtepec, Oaxaca 68301, Mexico;
| | - Luz Camacho
- Laboratorio de Nutrición Experimental, Instituto Nacional de Pediatría, Ciudad de México 4530, Mexico;
| | - A. Karin Navarro-Mtz
- Instituto de Biotecnología, Universidad del Papaloapan, Tuxtepec, Oaxaca 68301, Mexico; (D.B.B.); (M.P.-R.)
- Correspondence: ; Tel.: +52-28787-59240 (ext. 220); Fax: +52-28787-59240
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Camacho-Millán R, Aguilar-Medina EM, Quezada H, Medina-Contreras Ó, Patiño-López G, Cárdenas-Cota HM, Ramos-Payán R. Characterization of Cry toxins from autochthonous Bacillus thuringiensis isolates from Mexico. BOLETIN MEDICO DEL HOSPITAL INFANTIL DE MEXICO 2018; 74:193-199. [PMID: 29382486 DOI: 10.1016/j.bmhimx.2017.03.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 03/27/2017] [Accepted: 03/27/2017] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Chemical pesticides, widely used in agriculture and vector-borne disease control, have shown toxic effects on the environment and the people in contact with them. Bacillus thuringiensis is a widely used bacterium for alternative and safer control of insect pests. Its toxins are specific for insects but innocuous for mammals and may be used as powerful adjuvants when applied with vaccines. The objective of this work was to characterize some autochthonous B. thuringiensis strains, which could be used for the control of a local pest (Diatraea considerata Heinrich) that affects sugar cane crops in Sinaloa, Mexico. Also, to evaluate these strains as a source of Cry toxins, which may be used in the future as adjuvants for some vaccines. METHODS Eight strains from field-collected dead insects were isolated. These were microbiologically identified as B. thuringiensis and confirmed by amplification and sequencing of 16S rDNA. Bioassays were performed to evaluate their pathogenicity against D. considerata, and Cry toxins were identified by proteomic analyses. RESULTS An increased mortality among larvae infected with strain Bt-D was observed, and its toxin was identified as Cry1Ac. CONCLUSIONS The observed data showed that the selected strain was pathogenic to D. considerata and seemed to produce Cry1Ac protein, which has been reported as an adjuvant in different types of immunization.
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Affiliation(s)
- Raquel Camacho-Millán
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, Sinaloa, Mexico
| | | | - Héctor Quezada
- Laboratorio de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Óscar Medina-Contreras
- Laboratorio de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Genaro Patiño-López
- Laboratorio de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | | | - Rosalío Ramos-Payán
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, Sinaloa, Mexico.
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Pang Y, Li C, Wang S, Ba W, Yu T, Pei G, Bi D, Liang H, Pan X, Zhu T, Gou M, Han Y, Li Q. A novel protein derived from lamprey supraneural body tissue with efficient cytocidal actions against tumor cells. Cell Commun Signal 2017; 15:42. [PMID: 29037260 PMCID: PMC5644163 DOI: 10.1186/s12964-017-0198-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Accepted: 10/05/2017] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND In previous research, we found that cell secretion from the adult lamprey supraneural body tissues possesses cytocidal activity against tumor cells, but the protein with cytocidal activity was unidentified. METHODS A novel lamprey immune protein (LIP) as defense molecule was first purified and identified in jawless vertebrates (cyclostomes) using hydroxyapatite column and Q Sepharose Fast Flow column. After LIP stimulation, morphological changes of tumor cells were analysed and measured whether in vivo or in vitro. RESULTS LIP induces remarkable morphological changes in tumor cells, including cell blebbing, cytoskeletal alterations, mitochondrial fragmentation and endoplasmic reticulum vacuolation, and most of the cytoplasmic and organelle proteins are released following treatment with LIP. LIP evokes an elevation of intracellular calcium and inflammatory molecule levels. Our analysis of the cytotoxic mechanism suggests that LIP can upregulate the expression of caspase 1, RIPK1, RIP3 to trigger pyroptosis and necroptosis. To examine the effect of LIP in vivo, tumor xenograft experiments were performed, and the results indicated that LIP inhibits tumor growth without damage to mice. In addition, the cytotoxic action of LIP depended on the phosphatidylserine (PS) content of the cell membrane. CONCLUSIONS These observations suggest that LIP plays a crucial role in tumor cell survival and growth. The findings will also help to elucidate the mechanisms of host defense in lamprey.
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Affiliation(s)
- Yue Pang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Changzhi Li
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Shiyue Wang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Wei Ba
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Tao Yu
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Guangying Pei
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Dan Bi
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Hongfang Liang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Xiong Pan
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Ting Zhu
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Meng Gou
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Yinglun Han
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Qingwei Li
- College of Life Science, Liaoning Normal University, Dalian, 116081, China. .,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China.
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