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Algañarás M, Román CL, Gagliardino JJ, Maiztegui B, Flores LE. Structural modifications of INGAP-PP present in HTD4010 peptide potentiate its effect on rat islet gene expression and insulin secretion. Peptides 2024; 173:171148. [PMID: 38215942 DOI: 10.1016/j.peptides.2024.171148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/28/2023] [Accepted: 01/02/2024] [Indexed: 01/14/2024]
Abstract
Type 2 diabetes (T2D) is characterized by peripheral insulin resistance and altered insulin secretion due to a progressive loss of β-cell mass and function. Today, most antidiabetic agents are designed to resolve impaired insulin secretion and/or insulin resistance, and only GLP-1-based formulations contribute to stopping the decline in β-cell mass. HTD4010, a peptide carrying two modifications of the amino acid sequence of INGAP-PP (N-terminus acetylation and substitution of Asn13 by Ala) showed greater plasma stability and could be a good candidate for proposal as a drug that could improve β cell mass and function lost in T2D. In the present study, we showed that HTD4010 included in the culture media of normal rat islets at a dose 100 times lower than that used for INGAP-PP was able to modulate, in the same way as the original peptide, both insulin secretion in response to glucose and the expression of key genes related to insular function, insulin and leptin intracellular pathways, neogenesis, apoptosis, and inflammatory response. Our results confirm the positive effect of HTD4010 on β-cell function and gene expression of factors involved in the maintenance of β-cell mass. Although new assays in animal models of prediabetes and T2D must be performed to be conclusive, our results are very encouraging, and they suggest that the use of HTD4010 at a dose 100 times lower than that of INGAP-PP could minimize its side effects in a future clinical trial.
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Affiliation(s)
- Macarena Algañarás
- CENEXA. Centro de Endocrinología Experimental y Aplicada (UNLP-CONICET, CeAs CICPBA), Facultad de Ciencias Médicas UNLP, La Plata, Argentina
| | - Carolina L Román
- CENEXA. Centro de Endocrinología Experimental y Aplicada (UNLP-CONICET, CeAs CICPBA), Facultad de Ciencias Médicas UNLP, La Plata, Argentina
| | - Juan J Gagliardino
- CENEXA. Centro de Endocrinología Experimental y Aplicada (UNLP-CONICET, CeAs CICPBA), Facultad de Ciencias Médicas UNLP, La Plata, Argentina
| | - Bárbara Maiztegui
- CENEXA. Centro de Endocrinología Experimental y Aplicada (UNLP-CONICET, CeAs CICPBA), Facultad de Ciencias Médicas UNLP, La Plata, Argentina
| | - Luis E Flores
- CENEXA. Centro de Endocrinología Experimental y Aplicada (UNLP-CONICET, CeAs CICPBA), Facultad de Ciencias Médicas UNLP, La Plata, Argentina.
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Romero A, Heidenreich AC, Román CL, Algañarás M, Nazer E, Gagliardino JJ, Maiztegui B, Flores LE, Rodríguez-Seguí SA. Transcriptional signature of islet neogenesis-associated protein peptide-treated rat pancreatic islets reveals induction of novel long non-coding RNAs. Front Endocrinol (Lausanne) 2023; 14:1226615. [PMID: 37842306 PMCID: PMC10570750 DOI: 10.3389/fendo.2023.1226615] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 09/06/2023] [Indexed: 10/17/2023] Open
Abstract
Background Diabetes mellitus is characterized by chronic hyperglycemia with loss of β-cell function and mass. An attractive therapeutic approach to treat patients with diabetes in a non-invasive way is to harness the innate regenerative potential of the pancreas. The Islet Neogenesis-Associated Protein pentadecapeptide (INGAP-PP) has been shown to induce β-cell regeneration and improve their function in rodents. To investigate its possible mechanism of action, we report here the global transcriptional effects induced by the short-term INGAP-PP in vitro treatment of adult rat pancreatic islets. Methods and findings Rat pancreatic islets were cultured in vitro in the presence of INGAP-PP for 4 days, and RNA-seq was generated from triplicate treated and control islet samples. We performed a de novo rat gene annotation based on the alignment of RNA-seq reads. The list of INGAP-PP-regulated genes was integrated with epigenomic data. Using the new gene annotation generated in this work, we quantified RNA-seq data profiled in INS-1 cells treated with IL1β, IL1β+Calcipotriol (a vitamin D agonist) or vehicle, and single-cell RNA-seq data profiled in rat pancreatic islets. We found 1,669 differentially expressed genes by INGAP-PP treatment, including dozens of previously unannotated rat transcripts. Genes differentially expressed by the INGAP-PP treatment included a subset of upregulated transcripts that are associated with vitamin D receptor activation. Supported by epigenomic and single-cell RNA-seq data, we identified 9 previously unannotated long noncoding RNAs (lncRNAs) upregulated by INGAP-PP, some of which are also differentially regulated by IL1β and vitamin D in β-cells. These include Ri-lnc1, which is enriched in mature β-cells. Conclusions Our results reveal the transcriptional program that could explain the enhancement of INGAP-PP-mediated physiological effects on β-cell mass and function. We identified novel lncRNAs that are induced by INGAP-PP in rat islets, some of which are selectively expressed in pancreatic β-cells and downregulated by IL1β treatment of INS-1 cells. Our results suggest a relevant function for Ri-lnc1 in β-cells. These findings are expected to provide the basis for a deeper understanding of islet translational results from rodents to humans, with the ultimate goal of designing new therapies for people with diabetes.
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Affiliation(s)
- Agustín Romero
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET-Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ana C. Heidenreich
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET-Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carolina L. Román
- Centro de Endocrinología Experimental y Aplicada (CENEXA) - Universidad Nacional de La Plata (UNLP) - CONICET- Centro Asociado a la Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CeAs CICPBA), Facultad de Ciencias Médicas UNLP, La Plata, Argentina
| | - Macarena Algañarás
- Centro de Endocrinología Experimental y Aplicada (CENEXA) - Universidad Nacional de La Plata (UNLP) - CONICET- Centro Asociado a la Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CeAs CICPBA), Facultad de Ciencias Médicas UNLP, La Plata, Argentina
| | - Ezequiel Nazer
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET-Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
| | - Juan J. Gagliardino
- Centro de Endocrinología Experimental y Aplicada (CENEXA) - Universidad Nacional de La Plata (UNLP) - CONICET- Centro Asociado a la Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CeAs CICPBA), Facultad de Ciencias Médicas UNLP, La Plata, Argentina
| | - Bárbara Maiztegui
- Centro de Endocrinología Experimental y Aplicada (CENEXA) - Universidad Nacional de La Plata (UNLP) - CONICET- Centro Asociado a la Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CeAs CICPBA), Facultad de Ciencias Médicas UNLP, La Plata, Argentina
| | - Luis E. Flores
- Centro de Endocrinología Experimental y Aplicada (CENEXA) - Universidad Nacional de La Plata (UNLP) - CONICET- Centro Asociado a la Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CeAs CICPBA), Facultad de Ciencias Médicas UNLP, La Plata, Argentina
| | - Santiago A. Rodríguez-Seguí
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), CONICET-Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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Wang P, Yuan Y, Xu K, Zhong H, Yang Y, Jin S, Yang K, Qi X. Biological applications of copper-containing materials. Bioact Mater 2021; 6:916-927. [PMID: 33210018 PMCID: PMC7647998 DOI: 10.1016/j.bioactmat.2020.09.017] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/10/2020] [Accepted: 09/15/2020] [Indexed: 12/11/2022] Open
Abstract
Copper is an indispensable trace metal element in the human body, which is mainly absorbed in the stomach and small intestine and excreted into the bile. Copper is an important component and catalytic agent of many enzymes and proteins in the body, so it can influence human health through multiple mechanisms. Based on the biological functions and benefits of copper, an increasing number of researchers in the field of biomaterials have focused on developing novel copper-containing biomaterials, which exhibit unique properties in protecting the cardiovascular system, promoting bone fracture healing, and exerting antibacterial effects. Copper can also be used in promoting incisional wounds healing, killing cancer cells, Positron Emission Tomography (PET) imaging, radioimmunological tracing and radiotherapy of cancer. In the present review, the biological functions of copper in the human body are presented, along with an overview of recent progress in our understanding of the biological applications and development of copper-containing materials. Furthermore, this review also provides the prospective on the challenges of those novel biomaterials for future clinical applications.
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Affiliation(s)
- Peng Wang
- Key Laboratory of Diagnostic Imaging and Interventional Radiology of Liaoning Province, Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
| | - Yonghui Yuan
- Clinical Research Center for Malignant Tumor of Liaoning Province, Cancer Hospital of China Medical University Liaoning Cancer Hospital & Institute, Shenyang, Liaoning, 110042, China
| | - Ke Xu
- Key Laboratory of Diagnostic Imaging and Interventional Radiology of Liaoning Province, Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
| | - Hongshan Zhong
- Key Laboratory of Diagnostic Imaging and Interventional Radiology of Liaoning Province, Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
| | - Yinghui Yang
- Suzhou Silvan Medical Co., Ltd, Suzhou 215006, China
| | - Shiyu Jin
- Key Laboratory of Diagnostic Imaging and Interventional Radiology of Liaoning Province, Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
| | - Ke Yang
- Institute of Metal Research, Chinese Academy of Science, Shenyang 110016, China
| | - Xun Qi
- Key Laboratory of Diagnostic Imaging and Interventional Radiology of Liaoning Province, Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China
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Jin X, Dai L, Ma Y, Wang J, Liu Z. Implications of HIF-1α in the tumorigenesis and progression of pancreatic cancer. Cancer Cell Int 2020; 20:273. [PMID: 32587480 PMCID: PMC7313137 DOI: 10.1186/s12935-020-01370-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/19/2020] [Indexed: 02/07/2023] Open
Abstract
Pancreatic cancer is one of the leading causes of cancer-related deaths worldwide and is characterized by highly hypoxic tumor microenvironment. Hypoxia-inducible factor-1 alpha (HIF-1α) is a major regulator of cellular response to changes in oxygen concentration, supporting the adaptation of tumor cells to hypoxia in an oxygen-deficient tumor microenvironment. Numerous studies revealed the central role of HIF-1α in the carcinogenesis and progression of pancreatic cancer. This article reviewed the molecular mechanisms of how HIF-1α regulated tumorigenesis and progression of pancreatic cancer and suggested that targeting HIF-1α and its signaling pathways could be promising therapeutics for pancreatic cancer.
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Affiliation(s)
- Xiao Jin
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011 Jiangsu China
| | - Lu Dai
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011 Jiangsu China
| | - Yilan Ma
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011 Jiangsu China
| | - Jiayan Wang
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011 Jiangsu China
| | - Zheng Liu
- Medical Center for Digestive Diseases, Second Affiliated Hospital, Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011 Jiangsu China
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