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Rodrigues-Dos-Santos K, Soares GM, Guimarães DSPSF, Araújo TR, Vettorazzi JF, Zangerolamo L, Marconato-Júnior E, Cai R, Sha W, Schally AV, Boschero AC, Barbosa HCL. Effects of growth hormone-releasing hormone agonistic analog MR-409 on insulin-secreting cells under cyclopiazonic acid-induced endoplasmic reticulum stress. Mol Cell Endocrinol 2021; 535:111379. [PMID: 34252492 DOI: 10.1016/j.mce.2021.111379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/11/2021] [Accepted: 06/29/2021] [Indexed: 11/18/2022]
Abstract
The endoplasmic reticulum (ER) stress is one of the mechanisms related to decreased insulin secretion and beta cell death, contributing to the progress of type 2 diabetes mellitus (T2D). Thus, investigating agents that can influence this process would help prevent the development of T2D. Recently, the growth-hormone-releasing hormone (GHRH) action has been demonstrated in INS-1E cells, in which it increases cell proliferation and insulin secretion. As the effects of GHRH and its agonists have not been fully elucidated in the beta cell, we proposed to investigate them by evaluating the role of the GHRH agonist, MR-409, in cells under ER stress. Our results show that the agonist was unable to ameliorate or prevent ER stress. However, cells exposed to the agonist showed less oxidative stress and greater survival even under ER stress. The mechanisms by which GHRH agonist, MR-409, leads to these outcomes require further investigation.
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Affiliation(s)
- Karina Rodrigues-Dos-Santos
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, P.O. Box 6109, CEP: 13083-865, Brazil; Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Gabriela M Soares
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, P.O. Box 6109, CEP: 13083-865, Brazil; Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Dimitrius S P S F Guimarães
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, P.O. Box 6109, CEP: 13083-865, Brazil; Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Thiago R Araújo
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, P.O. Box 6109, CEP: 13083-865, Brazil; Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Jean F Vettorazzi
- Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil; Educational Union of Cascavel, UNIVEL, Cascavel, Parana, Brazil
| | - Lucas Zangerolamo
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, P.O. Box 6109, CEP: 13083-865, Brazil; Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Emilio Marconato-Júnior
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, P.O. Box 6109, CEP: 13083-865, Brazil; Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Renzhi Cai
- Veterans Affairs Medical Center, 1201 NW 16th Street, Research Service (151), Room 2A103C, Miami, FL, 33125, United States; Departments of Pathology and Medicine, Divisions of Hematology/Oncology and Endocrinology, Miller School of Medicine, University of Miami, 1600 NW 10th Avenue #1140, Miami, FL, 33136, United States
| | - Wei Sha
- Veterans Affairs Medical Center, 1201 NW 16th Street, Research Service (151), Room 2A103C, Miami, FL, 33125, United States; Departments of Pathology and Medicine, Divisions of Hematology/Oncology and Endocrinology, Miller School of Medicine, University of Miami, 1600 NW 10th Avenue #1140, Miami, FL, 33136, United States
| | - Andrew V Schally
- Veterans Affairs Medical Center, 1201 NW 16th Street, Research Service (151), Room 2A103C, Miami, FL, 33125, United States; Departments of Pathology and Medicine, Divisions of Hematology/Oncology and Endocrinology, Miller School of Medicine, University of Miami, 1600 NW 10th Avenue #1140, Miami, FL, 33136, United States.
| | - Antônio C Boschero
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, P.O. Box 6109, CEP: 13083-865, Brazil; Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Helena C L Barbosa
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, P.O. Box 6109, CEP: 13083-865, Brazil; Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil.
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