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Choi KH, Lee DK, Jeong J, Ahn Y, Go DM, Kim DY, Lee CK. Inhibition of BMP-mediated SMAD pathway supports the pluripotency of pig embryonic stem cells in the absence of feeder cells. Theriogenology 2024; 225:67-80. [PMID: 38795512 DOI: 10.1016/j.theriogenology.2024.05.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/18/2024] [Accepted: 05/18/2024] [Indexed: 05/28/2024]
Abstract
Here, we examined the effects of the BMP signaling pathway inhibitor LDN-193189 on the pluripotency of porcine embryonic stem cells (ESCs) in the absence of feeder cells using molecular and transcriptomic techniques. Additionally, the effects of some extracellular matrix components on porcine ESC pluripotency were evaluated to develop an optimized and sustainable feeder-free culture system for porcine ESCs. Feeder cells were found to play an important role in supporting the pluripotency of porcine ESCs by blocking trophoblast and mesodermal differentiation through the inhibition of the BMP pathway. Additionally, treatment with LDN-193189, an inhibitor of the BMP pathway, maintained the pluripotency and homogeneity of porcine ESCs for an extended period in the absence of feeder cells by stimulating the secretion of chemokines and suppressing differentiation, based on transcriptome analysis. Conclusively, these results suggest that LDN-193189 could be a suitable replacement for feeder cells in the maintenance of porcine ESC pluripotency during culture. Additionally, these findings contribute to the understanding of pluripotency gene networks and comparative embryogenesis.
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Affiliation(s)
- Kwang-Hwan Choi
- Research and Development Center, Space F Corporation, Hwaseong, Gyeonggi-do, 18471, Republic of Korea; Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul, 08826, Republic of Korea.
| | - Dong-Kyung Lee
- Research and Development Center, Space F Corporation, Hwaseong, Gyeonggi-do, 18471, Republic of Korea; Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jinsol Jeong
- Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Yelim Ahn
- Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Du-Min Go
- Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dae-Yong Kim
- Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Republic of Korea
| | - Chang-Kyu Lee
- Department of Agricultural Biotechnology, Animal Biotechnology Major, and Research Institute of Agriculture and Life Science, Seoul National University, Seoul, 08826, Republic of Korea; Institute of Green Bio Science and Technology, Seoul National University, Pyeong Chang, 25354, Republic of Korea.
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Zhang XY, Li TT, Liu YR, Geng SS, Luo AL, Jiang MS, Liang XW, Shang JH, Lu KH, Yang XG. Transcriptome analysis revealed differences in the microenvironment of spermatogonial stem cells in seminiferous tubules between pre-pubertal and adult buffaloes. Reprod Domest Anim 2021; 56:629-641. [PMID: 33492695 DOI: 10.1111/rda.13900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 01/19/2021] [Indexed: 12/21/2022]
Abstract
The microenvironment in the seminiferous tubules of buffalo changes with age, which affects the self-renewal and growth of spermatogonial stem cells (SSCs) and the process of spermatogenesis, but the mechanism remains to be elucidated. RNA-seq was performed to compare the transcript profiles of pre-pubertal buffalo (PUB) and adult buffalo (ADU) seminiferous tubules. In total, 17,299 genes from PUB and ADU seminiferous tubules identified through RNA-seq, among which 12,271 were expressed in PUB and ADU seminiferous tubules, 4,027 were expressed in only ADU seminiferous tubules, and 956 were expressed in only PUB seminiferous tubules. Of the 17,299 genes, we identified 13,714 genes that had significant differences in expression levels between PUB and ADU through GO enrichment analysis. Among these genes, 5,342 were significantly upregulated and possibly related to the formation or identity of the surface antigen on SSCs during self-renewal; 7,832 genes were significantly downregulated, indicating that genes in PUB seminiferous tubules do not participate in the biological processes of sperm differentiation or formation in this phase compared with those in ADU seminiferous tubules. Subsequently, through the combination with KEGG analysis, we detected enrichment in a number of genes related to the development of spermatogonial stem cells, providing a reference for study of the development mechanism of buffalo spermatogonial stem cells in the future. In conclusion, our data provide detailed information on the mRNA transcriptomes in PUB and ADU seminiferous tubules, revealing the crucial factors involved in maintaining the microenvironment and providing a reference for further in vitro cultivation of SSCs.
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Affiliation(s)
- Xiao-Yuan Zhang
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi University, Nanning, China.,College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Ting-Ting Li
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi University, Nanning, China.,College of Animal Science & Technology, Guangxi University, Nanning, China.,HeNan Provincial People's Hospital, China
| | - Ya-Ru Liu
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi University, Nanning, China.,College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Shuang-Shuang Geng
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi University, Nanning, China.,College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Ao-Lin Luo
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi University, Nanning, China.,College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Ming-Sheng Jiang
- College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Xing-Wei Liang
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi University, Nanning, China.,College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Jiang-Hua Shang
- Guangxi Key Laboratory of Buffalo Genetics, Reproduction and Breeding, Guangxi Buffalo Research Institute, Nanning, China
| | - Ke-Huan Lu
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi University, Nanning, China.,College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Xiao-Gan Yang
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi University, Nanning, China.,College of Animal Science & Technology, Guangxi University, Nanning, China
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Bourcier L, Crapoulet N, Ouellette RJ, Mallet M, Ben Amor M. Phenotypic spectrum associated with pathogenic mutation in the NRG1 gene in Acadian family. Am J Med Genet A 2021; 185:1211-1215. [PMID: 33421311 DOI: 10.1002/ajmg.a.62069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 11/06/2022]
Abstract
NRG1 is a gene that encodes for a protein that binds to a receptor of the tyrosine kinase family which is essential for the survival of the central nervous system development during embryogenesis. Mutation of the NRG1 gene causes aganglionosis, which leads to Hirschsprung disease. Two brothers of Acadian descent presented with a history of Hirschsprung disease, in association with other anomalies including congenital heart disease, learning difficulties, developmental issues, and hypopigmented hair patch. Molecular analysis in both siblings revealed a heterozygous pathogenic mutation in the NGR1 gene (c.235C>T [p.Arg79*]), that was inherited from an unaffected father. This family expands our knowledge about the phenotypic spectrum associated with pathogenic mutation in the NRG1 gene with intrafamilial variability and the likely reduced penetrance for the phenotypic expression.
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Affiliation(s)
- Liane Bourcier
- Centre de Formation Médicale du Nouveau-Brunswick, Université de Sherbrooke, Moncton, Canada
| | - Nicolas Crapoulet
- Laboratoire de génétique moléculaire, Réseau de santé Vitalité, Moncton, Canada
| | - Rodney J Ouellette
- Laboratoire de génétique moléculaire, Réseau de santé Vitalité, Moncton, Canada
| | - Mathieu Mallet
- Bureau d'appui à la recherche régional, Réseau de santé Vitalité, Moncton, Canada
| | - Mouna Ben Amor
- Service de médecine génétique, Réseau de santé Vitalité, Moncton, Canada
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Cheng CL, Yang SC, Lai CY, Wang CK, Chang CF, Lin CY, Chen WJ, Lin PY, Wu HC, Ma N, Lu FL, Lu J. CXCL14 Maintains hESC Self-Renewal through Binding to IGF-1R and Activation of the IGF-1R Pathway. Cells 2020; 9:cells9071706. [PMID: 32708730 PMCID: PMC7407311 DOI: 10.3390/cells9071706] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 01/04/2023] Open
Abstract
Human embryonic stem cells (hESCs) have important roles in regenerative medicine, but only a few studies have investigated the cytokines secreted by hESCs. We screened and identified chemokine (C-X-C motif) ligand 14 (CXCL14), which plays crucial roles in hESC renewal. CXCL14, a C-X-C motif chemokine, is also named as breast and kidney-expressed chemokine (BRAK), B cell and monocyte-activated chemokine (BMAC), and macrophage inflammatory protein-2γ (MIP-2γ). Knockdown of CXCL14 disrupted the hESC self-renewal, changed cell cycle distribution, and further increased the expression levels of mesoderm and endoderm differentiated markers. Interestingly, we demonstrated that CXCL14 is the ligand for the insulin-like growth factor 1 receptor (IGF-1R), and it can activate IGF-1R signal transduction to support hESC renewal. Currently published literature indicates that all receptors in the CXCL family are G protein-coupled receptors (GPCRs). This report is the first to demonstrate that a CXCL protein can bind to and activate a receptor tyrosine kinase (RTK), and also the first to show that IGF-1R has another ligand in addition to IGFs. These findings broaden our understanding of stem cell biology and signal transduction.
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Affiliation(s)
- Chih-Lun Cheng
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan; (C.-L.C.); (H.-C.W.)
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; (S.-C.Y.); (C.-Y.L.); (C.-K.W.); (C.-F.C.); (C.-Y.L.); (W.-J.C.); (P.-Y.L.)
| | - Shang-Chih Yang
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; (S.-C.Y.); (C.-Y.L.); (C.-K.W.); (C.-F.C.); (C.-Y.L.); (W.-J.C.); (P.-Y.L.)
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan
| | - Chien-Ying Lai
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; (S.-C.Y.); (C.-Y.L.); (C.-K.W.); (C.-F.C.); (C.-Y.L.); (W.-J.C.); (P.-Y.L.)
| | - Cheng-Kai Wang
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; (S.-C.Y.); (C.-Y.L.); (C.-K.W.); (C.-F.C.); (C.-Y.L.); (W.-J.C.); (P.-Y.L.)
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan
| | - Ching-Fang Chang
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; (S.-C.Y.); (C.-Y.L.); (C.-K.W.); (C.-F.C.); (C.-Y.L.); (W.-J.C.); (P.-Y.L.)
| | - Chun-Yu Lin
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; (S.-C.Y.); (C.-Y.L.); (C.-K.W.); (C.-F.C.); (C.-Y.L.); (W.-J.C.); (P.-Y.L.)
| | - Wei-Ju Chen
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; (S.-C.Y.); (C.-Y.L.); (C.-K.W.); (C.-F.C.); (C.-Y.L.); (W.-J.C.); (P.-Y.L.)
- Genome and Systems Biology Degree Program, College of Life Science, National Taiwan University, Taipei 106, Taiwan
| | - Po-Yu Lin
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; (S.-C.Y.); (C.-Y.L.); (C.-K.W.); (C.-F.C.); (C.-Y.L.); (W.-J.C.); (P.-Y.L.)
| | - Han-Chung Wu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan; (C.-L.C.); (H.-C.W.)
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei 115, Taiwan
| | - Nianhan Ma
- Department of Biomedical Sciences and Engineering, National Central University, Taoyuan City 320, Taiwan;
| | - Frank Leigh Lu
- Department of Pediatrics, National Taiwan University Children’s Hospital, National Taiwan University Hospital, and National Taiwan University Medical College, Taipei 100, Taiwan
- Correspondence: (F.L.L.); (J.L.)
| | - Jean Lu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan; (C.-L.C.); (H.-C.W.)
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; (S.-C.Y.); (C.-Y.L.); (C.-K.W.); (C.-F.C.); (C.-Y.L.); (W.-J.C.); (P.-Y.L.)
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan
- Genome and Systems Biology Degree Program, College of Life Science, National Taiwan University, Taipei 106, Taiwan
- National Core Facility Program for Biotechnology, National RNAi Platform, Taipei 112, Taiwan
- Department of Life Science, Tzu Chi University, Hualien 970, Taiwan
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei 114, Taiwan
- Correspondence: (F.L.L.); (J.L.)
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Chillà A, Margheri F, Biagioni A, Del Rosso T, Fibbi G, Del Rosso M, Laurenzana A. Cell-Mediated Release of Nanoparticles as a Preferential Option for Future Treatment of Melanoma. Cancers (Basel) 2020; 12:cancers12071771. [PMID: 32630815 PMCID: PMC7408438 DOI: 10.3390/cancers12071771] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 06/22/2020] [Accepted: 06/30/2020] [Indexed: 01/15/2023] Open
Abstract
Targeted and immune therapies have unquestionably improved the prognosis of melanoma patients. However the treatment of this neoplasm still requires approaches with a higher therapeutic index, in order to reduce shortcomings related to toxic effects and aspecific targeting. This means developing therapeutic tools derived with high affinity molecules for tumor components differentially expressed in melanoma cells with respect to their normal counterpart. Nanomedicine has sought to address this problem owing to the high modulability of nanoparticles. This approach exploits not only the enhanced permeability and retention effect typical of the tumor microenvironment (passive targeting), but also the use of specific "molecular antennas" that recognize some tumor-overexpressed molecules (active targeting). This line of research has given rise to the so-called "smart nanoparticles," some of which have already passed the preclinical phase and are under clinical trials in melanoma patients. To further improve nanoparticles partition within tumors, for some years now a line of thought is exploiting the molecular systems that regulate the innate tumor-homing activity of platelets, granulocytes, monocytes/macrophages, stem cells, endothelial-colony-forming cells, and red blood cells loaded with nanoparticles. This new vision springs from the results obtained with some of these cells in regenerative medicine, an approach called "cell therapy." This review takes into consideration the advantages of cell therapy as the only one capable of overcoming the limits of targeting imposed by the increased interstitial pressure of tumors.
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Affiliation(s)
- Anastasia Chillà
- Department of Experimental and Clinical Biomedical Sciences School of Health Sciences, University of Florence-Viale G.B. Morgagni, 50–50134 Florence, Italy; (A.C.); (F.M.); (A.B.); (G.F.)
| | - Francesca Margheri
- Department of Experimental and Clinical Biomedical Sciences School of Health Sciences, University of Florence-Viale G.B. Morgagni, 50–50134 Florence, Italy; (A.C.); (F.M.); (A.B.); (G.F.)
| | - Alessio Biagioni
- Department of Experimental and Clinical Biomedical Sciences School of Health Sciences, University of Florence-Viale G.B. Morgagni, 50–50134 Florence, Italy; (A.C.); (F.M.); (A.B.); (G.F.)
| | - Tommaso Del Rosso
- Department of Physics, Pontifical Catholic University of Rio de Janeiro, 22451-900 Rio de Janeiro-RJ, Brazil;
| | - Gabriella Fibbi
- Department of Experimental and Clinical Biomedical Sciences School of Health Sciences, University of Florence-Viale G.B. Morgagni, 50–50134 Florence, Italy; (A.C.); (F.M.); (A.B.); (G.F.)
| | - Mario Del Rosso
- Department of Experimental and Clinical Biomedical Sciences School of Health Sciences, University of Florence-Viale G.B. Morgagni, 50–50134 Florence, Italy; (A.C.); (F.M.); (A.B.); (G.F.)
- Correspondence: (M.D.R.); (A.L.)
| | - Anna Laurenzana
- Department of Experimental and Clinical Biomedical Sciences School of Health Sciences, University of Florence-Viale G.B. Morgagni, 50–50134 Florence, Italy; (A.C.); (F.M.); (A.B.); (G.F.)
- Correspondence: (M.D.R.); (A.L.)
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Singh N, Padi SKR, Bearss JJ, Pandey R, Okumura K, Beltran H, Song JH, Kraft AS, Olive V. PIM protein kinases regulate the level of the long noncoding RNA H19 to control stem cell gene transcription and modulate tumor growth. Mol Oncol 2020; 14:974-990. [PMID: 32146726 PMCID: PMC7191193 DOI: 10.1002/1878-0261.12662] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 02/11/2020] [Accepted: 03/04/2020] [Indexed: 01/10/2023] Open
Abstract
The proviral integration site for Moloney murine leukemia virus (PIM) serine/threonine kinases have an oncogenic and prosurvival role in hematological and solid cancers. However, the mechanism by which these kinases drive tumor growth has not been completely elucidated. To determine the genes controlled by these protein kinases, we carried out a microarray analysis in T-cell acute lymphoblastic leukemia (T-ALL) comparing early progenitor (ETP-ALL) cell lines whose growth is driven by PIM kinases to more mature T-ALL cells that have low PIM levels. This analysis demonstrated that the long noncoding RNA (lncRNA) H19 was associated with increased PIM levels in ETP-ALL. Overexpression or knockdown of PIM in these T-ALL cell lines controlled the level of H19 and regulated the methylation of the H19 promoter, suggesting a mechanism by which PIM controls H19 transcription. In these T-ALL cells, the expression of PIM1 induced stem cell gene expression (SOX2, OCT-4, and NANOG) through H19. Identical results were found in prostate cancer (PCa) cell lines where PIM kinases drive cancer growth, and both H19 and stem cell gene levels. Small molecule pan-PIM inhibitors (PIM-i) currently in clinical trials reduced H19 expression in both of these tumor types. Importantly, the knockdown of H19 blocked the ability of PIM to induce stem cell genes in T-ALL cells, suggesting a novel signal transduction cascade. In PCa, increases in SOX2 levels have been shown to cause both resistance to the androgen deprivation therapy (ADT) and the induction of neuroendocrine PCa, a highly metastatic form of this disease. Treatment of PCa cells with a small molecule pan-PIM-i reduced stem cell gene transcription and enhanced ADT, while overexpression of H19 suppressed the ability of pan-PIM-i to regulate hormone blockade. Together, these results demonstrate that the PIM kinases control the level of lncRNA H19, which in turn modifies stem cell gene transcription regulating tumor growth.
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Affiliation(s)
- Neha Singh
- University of Arizona Cancer Center, University of Arizona, Tucson, AZ, USA
| | - Sathish K R Padi
- University of Arizona Cancer Center, University of Arizona, Tucson, AZ, USA
| | - Jeremiah J Bearss
- University of Arizona Cancer Center, University of Arizona, Tucson, AZ, USA
| | - Ritu Pandey
- University of Arizona Cancer Center, University of Arizona, Tucson, AZ, USA
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
| | - Koichi Okumura
- University of Arizona Cancer Center, University of Arizona, Tucson, AZ, USA
- Department of Physiology, University of Arizona, Tucson, AZ, USA
| | - Himisha Beltran
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Jin H Song
- University of Arizona Cancer Center, University of Arizona, Tucson, AZ, USA
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
| | - Andrew S Kraft
- University of Arizona Cancer Center, University of Arizona, Tucson, AZ, USA
- Department of Medicine, University of Arizona, Tucson, AZ, USA
| | - Virginie Olive
- University of Arizona Cancer Center, University of Arizona, Tucson, AZ, USA
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Alam I, Gul R, Chong J, Tan CTY, Chin HX, Wong G, Doggui R, Larbi A. Recurrent circadian fasting (RCF) improves blood pressure, biomarkers of cardiometabolic risk and regulates inflammation in men. J Transl Med 2019; 17:272. [PMID: 31426866 PMCID: PMC6700786 DOI: 10.1186/s12967-019-2007-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 07/31/2019] [Indexed: 12/22/2022] Open
Abstract
Background The effects of fasting on health in non-human models have been widely publicised for a long time and emerging evidence support the idea that these effects can be applicable to human practice. Methods In an open label longitudinal follow-up, a cohort of 78 adult men (aged 20 to 85 years) who fasted for 29 consecutive days from sunrise to sunset (16 h fasting—referred to as recurrent circadian fasting) in Pakistan, were studied. The primary outcomes of the fasting study was weight loss/recovery and the associated changes in blood pressure and circulating levels of surrogate markers linked to organ and system functions—including cardiovascular, metabolic and inflammation. Post-fasting outcomes include the regulation of physiological biomarkers. Results Recurrent circadian fasting with weight loss reduced blood pressure (140.6 vs. 124.2 mmHg) and markers of cardiovascular risk (~ 4-fold for resistin; triglycerides: p < 0.0001). Reduced glycemia (p < 0.0001) and the associated changes in the regulation of ketosis (β-hydroxybutyrate) were accompanied by a metabolic shift (PPARβ, osteoprotegerin), suggesting the involvement of the different physiological systems tested. Elevated orexin-A levels (p = 0.0183) in participants indicate sleep disturbance and circadian adaptation. All participants had CRP level < 2 mg/l during the fasting period and a similar trend was observed for TNFα. While most SASP molecules were decreased after the fasting period, heightened levels of IL-8 and IL-6 suggest that some inflammatory markers may be elevated by recurrent circadian fasting. Importantly, older adults reveal similar or more substantial benefits from fasting. Conclusions Recurrent circadian fasting is beneficial at the cardiometabolic and inflammatory levels, especially for at-risk individuals—this is contingent on compliance towards the recommended dietary behaviour, which controls carbohydrate and caloric intake. These benefits from fasting may be particularly beneficial to older adults as they often exhibit abnormal cardiovascular, metabolic and inflammatory signatures. Electronic supplementary material The online version of this article (10.1186/s12967-019-2007-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Iftikhar Alam
- Department of Community Health Sciences, Clinical Nutrition Program, College of Applied Medical Sciences, King Saud University, King Abdullah Street, Riyadh, Kingdom of Saudi Arabia.,Department of Human Nutrition and Dietetics, Bacha Khan University, Charsaddah, KPK, Pakistan
| | - Rahmat Gul
- Department of Human Nutrition and Dietetics, Bacha Khan University, Charsaddah, KPK, Pakistan
| | - Joni Chong
- Biology of Aging Laboratory, Singapore Immunology Network, Agency for Science Technology and Research, 8A Biomedical Grove, Singapore, 138648, Singapore
| | - Crystal Tze Ying Tan
- Biology of Aging Laboratory, Singapore Immunology Network, Agency for Science Technology and Research, 8A Biomedical Grove, Singapore, 138648, Singapore
| | - Hui Xian Chin
- Biology of Aging Laboratory, Singapore Immunology Network, Agency for Science Technology and Research, 8A Biomedical Grove, Singapore, 138648, Singapore
| | - Glenn Wong
- Biology of Aging Laboratory, Singapore Immunology Network, Agency for Science Technology and Research, 8A Biomedical Grove, Singapore, 138648, Singapore
| | - Radhouene Doggui
- SURVEN (Nutrition Surveillance and Epidemiology in Tunisia) Research Laboratory, National Institute of Nutrition and Food Technology (INNTA), Tunis, Tunisia
| | - Anis Larbi
- Biology of Aging Laboratory, Singapore Immunology Network, Agency for Science Technology and Research, 8A Biomedical Grove, Singapore, 138648, Singapore. .,Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
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Chandwani MN, Creisher PS, O'Donnell LA. Understanding the Role of Antiviral Cytokines and Chemokines on Neural Stem/Progenitor Cell Activity and Survival. Viral Immunol 2018; 32:15-24. [PMID: 30307795 DOI: 10.1089/vim.2018.0091] [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] [Indexed: 01/13/2023] Open
Abstract
Viral infections of the central nervous system are accompanied by the expression of cytokines and chemokines that can be critical for the control of viral replication in the brain. The outcomes of cytokine/chemokine signaling in neural cells vary widely, with cell-specific effects on cellular activity, proliferation, and survival. Neural stem/progenitor cells (NSPCs) are often altered during viral infections, through direct infection by the virus or by the influence of immune cell activity or cytokine/chemokine signaling. However, it has been challenging to dissect the contribution of the virus and specific inflammatory mediators during an infection. In addition to initiating an antiviral program in infected NSPCs, cytokines/chemokines can induce multiple changes in NSPC behavior that can perturb NSPC numbers, differentiation into other neural cells, and migration to sites of injury, and ultimately brain development and repair. The focus of this review was to dissect the effects of common antiviral cytokines and chemokines on NSPC activity, and to consider the subsequent pathological consequences for the host from changes in NSPC function.
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Affiliation(s)
- Manisha N Chandwani
- Department of Pharmaceutical, Administrative, and Social Sciences, Graduate School of Pharmaceutical Sciences, Duquesne University School of Pharmacy , Pittsburgh, Pennsylvania
| | - Patrick S Creisher
- Department of Pharmaceutical, Administrative, and Social Sciences, Graduate School of Pharmaceutical Sciences, Duquesne University School of Pharmacy , Pittsburgh, Pennsylvania
| | - Lauren A O'Donnell
- Department of Pharmaceutical, Administrative, and Social Sciences, Graduate School of Pharmaceutical Sciences, Duquesne University School of Pharmacy , Pittsburgh, Pennsylvania
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