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Pozzo LD, Xu Z, Lin S, Wang J, Wang Y, Enechojo OS, Abankwah JK, Peng Y, Chu X, Zhou H, Bian Y. Role of epigenetics in the regulation of skin aging and geroprotective intervention: A new sight. Biomed Pharmacother 2024; 174:116592. [PMID: 38615608 DOI: 10.1016/j.biopha.2024.116592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/07/2024] [Accepted: 04/10/2024] [Indexed: 04/16/2024] Open
Abstract
Multiple epigenetic factors play a regulatory role in maintaining the homeostasis of cutaneous components and are implicated in the aging process of the skin. They have been associated with the activation of the senescence program, which is the primary contributor to age-related decline in the skin. Senescent species drive a series of interconnected processes that impact the immediate surroundings, leading to structural changes, diminished functionality, and heightened vulnerability to infections. Geroprotective medicines that may restore the epigenetic balance represent valid therapeutic alliances against skin aging. Most of them are well-known Western medications such as metformin, nicotinamide adenine dinucleotide (NAD+), rapamycin, and histone deacetylase inhibitors, while others belong to Traditional Chinese Medicine (TCM) remedies for which the scientific literature provides limited information. With the help of the Geroprotectors.org database and a comprehensive analysis of the referenced literature, we have compiled data on compounds and formulae that have shown potential in preventing skin aging and have been identified as epigenetic modulators.
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Affiliation(s)
- Lisa Dal Pozzo
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Zhe Xu
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Shan Lin
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Jida Wang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Ying Wang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Ogbe Susan Enechojo
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Joseph Kofi Abankwah
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yanfei Peng
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiaoqian Chu
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Huifang Zhou
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Yuhong Bian
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
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Sichani AS, Khoddam S, Shakeri S, Tavakkoli Z, Jafroodi AR, Dabbaghipour R, Sisakht M, Fallahi J. Partial Reprogramming as a Method for Regenerating Neural Tissues in Aged Organisms. Cell Reprogram 2024; 26:10-23. [PMID: 38381402 DOI: 10.1089/cell.2023.0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024] Open
Abstract
Aging causes numerous age-related diseases, leading the human species to death. Nevertheless, rejuvenating strategies based on cell epigenetic modifications are a possible approach to counteract disease progression while getting old. Cell reprogramming of adult somatic cells toward pluripotency ought to be a promising tool for age-related diseases. However, researchers do not have control over this process as cells lose their fate, and cause potential cancerous cells or unexpected cell phenotypes. Direct and partial reprogramming were introduced in recent years with distinctive applications. Although direct reprogramming makes cells lose their identity, it has various applications in regeneration medicine. Temporary and regulated in vivo overexpression of Yamanaka factors has been shown in several experimental contexts to be achievable and is used to rejuvenate mice models. This regeneration can be accomplished by altering the epigenetic adult cell signature to the signature of a younger cell. The greatest advantage of partial reprogramming is that this method does not allow cells to lose their identity when they are resetting their epigenetic clock. It is a regimen of short-term Oct3/4, Sox2, Klf4, and c-Myc expression in vivo that prevents full reprogramming to the pluripotent state and avoids both tumorigenesis and the presence of unwanted undifferentiated cells. We know that many neurological age-related diseases, such as Alzheimer's disease, stroke, dementia, and Parkinson's disease, are the main cause of death in the last decades of life. Therefore, scientists have a special tendency regarding neuroregeneration methods to increase human life expectancy.
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Affiliation(s)
- Ali Saber Sichani
- Department of Biology, Texas A&M University, College Station, Texas, USA
| | - Somayeh Khoddam
- Department of Medical Genetics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Shayan Shakeri
- Department of Medical Genetics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Tavakkoli
- Department of Medical Genetics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Arad Ranji Jafroodi
- Department of Medical Genetics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Reza Dabbaghipour
- Department of Medical Genetics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohsen Sisakht
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Jafar Fallahi
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
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Meng Z, Xin L, Fan B. SDF-1α promotes subchondral bone sclerosis and aggravates osteoarthritis by regulating the proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells. BMC Musculoskelet Disord 2023; 24:275. [PMID: 37038152 PMCID: PMC10088262 DOI: 10.1186/s12891-023-06366-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 03/24/2023] [Indexed: 04/12/2023] Open
Abstract
BACKGROUND Subchondral bone sclerosis is a major feature of osteoarthritis (OA), and bone marrow mesenchymal stem cells (BMSCs) are presumed to play an important role in subchondral bone sclerosis. Accumulating evidence has shown that stromal cell-derived factor-1α (SDF-1α) plays a key role in bone metabolism-related diseases, but its role in OA pathogenesis remains largely unknown. The purpose of this study was to explore the role of SDF-1α expressed on BMSCs in subchondral bone sclerosis in an OA model. METHODS In the present study, C57BL/6J mice were divided into the following three groups: the sham control, destabilization of the medial meniscus (DMM), and AMD3100-treated DMM (DMM + AMD3100) groups. The mice were sacrificed after 2 or 8 weeks, and samples were collected for histological and immunohistochemical analyses. OA severity was assessed by performing hematoxylin and eosin (HE) and safranin O-fast green staining. SDF-1α expression in the OA model was measured using an enzyme-linked immunosorbent assay (ELISA), quantitative real-time polymerase chain reaction (q-PCR), and immunohistochemistry. Micro-CT was used to observe changes in subchondral bone in the OA model. CD44, CD90, RUNX2, and OCN expression in subchondral bone were measured using q-PCR and immunohistochemistry. In vitro, BMSCs were transfected with a recombinant lentivirus expressing SDF-1α, an empty vector (EV), or siRNA-SDF-1α. Western blot analysis, q-PCR, and immunofluorescence staining were used to confirm the successful transfection of BMSCs. The effect of SDF-1α on BMSC proliferation was evaluated by performing a CCK-8 assay and cell cycle analysis. The effect of SDF-1α on the osteogenic differentiation of BMSCs was assessed by performing alkaline phosphatase (ALP) and alizarin red S (ARS) staining. Cyclin D1, RUNX2 and OCN expression were measured using Western blot analysis, q-PCR, and immunofluorescence staining. RESULTS SDF-1α expression in the DMM-induced OA model increased. In the DMM + AMD3100 group, subchondral bone sclerosis was alleviated, OA was effectively relieved, and CD44, CD90, RUNX2, and OCN expression in subchondral bone was decreased. In vitro, high levels of SDF-1α promoted BMSC proliferation and increased osteogenic differentiation. Cyclin D1, RUNX2, and OCN expression increased. CONCLUSION The results of this study reveal a new molecular mechanism underlying the pathogenesis of OA. The targeted regulation of SDF-1α may be clinically effective in suppressing OA progression.
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Affiliation(s)
- Zhiqiang Meng
- Jiaozuo Coal Industry (Group) Co. Ltd, Central Hospital, No. 1 Jiankang Road, Jiefang District, Jiaozuo, 454000, Henan, China
- General Hospital of Ningxia Medical University, Ningxia Medical University, Ningxia, China
| | - Lujun Xin
- Jiaozuo Coal Industry (Group) Co. Ltd, Central Hospital, No. 1 Jiankang Road, Jiefang District, Jiaozuo, 454000, Henan, China
| | - Bosheng Fan
- Jiaozuo Coal Industry (Group) Co. Ltd, Central Hospital, No. 1 Jiankang Road, Jiefang District, Jiaozuo, 454000, Henan, China.
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Salminen A. Aryl hydrocarbon receptor (AhR) impairs circadian regulation: impact on the aging process. Ageing Res Rev 2023; 87:101928. [PMID: 37031728 DOI: 10.1016/j.arr.2023.101928] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/23/2023] [Accepted: 04/06/2023] [Indexed: 04/11/2023]
Abstract
Circadian clocks control the internal sleep-wake rhythmicity of 24hours which is synchronized by the solar cycle. Circadian regulation of metabolism evolved about 2.5 billion years ago, i.e., the rhythmicity has been conserved from cyanobacteria and Archaea through to mammals although the mechanisms utilized have developed with evolution. While the aryl hydrocarbon receptor (AhR) is an evolutionarily conserved defence mechanism against environmental threats, it has gained many novel functions during evolution, such as the regulation of cell cycle, proteostasis, and many immune functions. There is robust evidence that AhR signaling impairs circadian rhythmicity, e.g., by interacting with the core BMAL1/CLOCK complex and disturbing the epigenetic regulation of clock genes. The maintenance of circadian rhythms is impaired with aging, disturbing metabolism and many important functions in aged organisms. Interestingly, it is known that AhR signaling promotes an age-related tissue degeneration, e.g., it is able to inhibit autophagy, enhance cellular senescence, and disrupt extracellular matrix. These alterations are rather similar to those induced by a long-term impairment of circadian rhythms. However, it is not known whether AhR signaling enhances the aging process by impairing circadian homeostasis. I will examine the experimental evidence indicating that AhR signaling is able to promote the age-related degeneration via a disruption of circadian rhythmicity.
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Affiliation(s)
- Antero Salminen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland.
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Jinteng L, Peitao X, Wenhui Y, Guiwen Y, Feng Y, Xiaojun X, Zepeng S, Jiajie L, Yunshu C, Zhaoqiang Z, Yipeng Z, Zhikun L, Pei F, Qian C, Dateng L, Zhongyu X, Yanfeng W, Huiyong S. BMAL1-TTK-H2Bub1 loop deficiency contributes to impaired BM-MSC-mediated bone formation in senile osteoporosis. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 31:568-585. [PMID: 36910712 PMCID: PMC9996134 DOI: 10.1016/j.omtn.2023.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 02/13/2023] [Indexed: 02/18/2023]
Abstract
During the aging process, the reduced osteogenic differentiation of bone marrow mesenchymal stem cells (BM-MSCs) results in decreased bone formation, which contributes to senile osteoporosis. Previous studies have confirmed that interrupted circadian rhythm plays an indispensable role in age-related disease. However, the mechanism underlying the impaired osteogenic differentiation of BM-MSCs during aging and its relationship with interrupted circadian rhythm remains unclear. In this study, we confirmed that the circadian rhythm was interrupted in aging mouse skeletal systems. The level of the core rhythm component BMAL1 but not that of CLOCK in the osteoblast lineage was decreased in senile osteoporotic specimens from both human and mouse. BMAL1 targeted TTK as a circadian-controlled gene to phosphorylate MDM2 and regulate H2Bub1 level, while H2Bub1 in turn regulated the expression of BMAL1. The osteogenic capacity of BM-MSCs was maintained by a positive loop formed by BMAL1-TTK-MDM2-H2Bub1. Furthermore, we demonstrated that using bone-targeting recombinant adeno-associated virus 9 (rAAV9) to enhance Bmal1 or Ttk might have a therapeutic effect on senile osteoporosis and delays bone repair in aging mice. In summary, our study indicated that targeting the BMAL1-TTK-MDM2-H2Bub1 axis via bone-targeting rAAV9 might be a promising strategy for the treatment of senile osteoporosis.
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Affiliation(s)
- Li Jinteng
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Xu Peitao
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Yu Wenhui
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Ye Guiwen
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Ye Feng
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Xu Xiaojun
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Su Zepeng
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Lin Jiajie
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Che Yunshu
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Zhang Zhaoqiang
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Zeng Yipeng
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Li Zhikun
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Feng Pei
- Center for Biotherapy, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Cao Qian
- Center for Biotherapy, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Li Dateng
- Department of Statistical Science, Southern Methodist University, Dallas, TX, USA
| | - Xie Zhongyu
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Wu Yanfeng
- Center for Biotherapy, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
| | - Shen Huiyong
- Department of Orthopedics, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 518003, P.R. China
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Baklaushev VP, Yusubalieva GM, Samoilova EM, Belopasov VV. Resident Neural Stem Cell Niches and Regeneration: The Splendors and Miseries of Adult Neurogenesis. Russ J Dev Biol 2022. [DOI: 10.1134/s1062360422030080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Trivanović D. Adult Stem Cells in Aging. J Pers Med 2022; 12:jpm12050795. [PMID: 35629217 PMCID: PMC9146000 DOI: 10.3390/jpm12050795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 05/06/2022] [Indexed: 11/16/2022] Open
Abstract
Aging process is associated with numerous intrinsic and extrinsic factors that contribute to the adipose tissue accumulation, atherosclerosis, immune system failures, bone fragility, and cancer. [...]
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Affiliation(s)
- Drenka Trivanović
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, 97070 Wuerzburg, Germany;
- Bernhard-Heine-Center for Locomotion Research, University of Wuerzburg, 97070 Wuerzburg, Germany
- Group for Hematology and Stem Cells, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
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Aging and “rejuvenation” of resident stem cells — a new way to active longevity? КЛИНИЧЕСКАЯ ПРАКТИКА 2022. [DOI: 10.17816/clinpract104999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
This review presents the current data on the methodology for assessing the biological and epigenetic age, describes the concept of the epigenetic clock, and characterizes the main types of resident stem cells and the specifics of their aging. It has been shown that age-related changes in organs and tissues, as well as age-related diseases, are largely due to the aging of resident stem cells. The latter represent an attractive target for cell rejuvenation, as they can be isolated, cultured ex vivo, modified, and re-introduced into the resident niches. Two main methodologies for the cellular rejuvenation are presented: genetic reprogramming with zeroing the age of a cell using transient expression of transcription factors, and various approaches to epigenetic rejuvenation. The close relationship between aging, regeneration, and oncogenesis, and between these factors and the functioning of resident stem cell niches requires further precision studies, which, we are sure, can result in the creation of an effective anti-aging strategy and prolongation of human active life.
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Govoni S, Fagiani F, Lanni C, Allegri N. The Frailty Puzzle: Searching for Immortality or for Knowledge Survival? Front Cell Neurosci 2022; 16:838447. [PMID: 35250489 PMCID: PMC8891148 DOI: 10.3389/fncel.2022.838447] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 01/25/2022] [Indexed: 12/18/2022] Open
Abstract
What is the value of assessing the biological age and frailty and predicting residual lifespan and health status? The benefit is obvious if we have means to alter the pace of aging and the development of frailty. So far, limited but increasing examples of interventions altering the predicted status indicate that, at least in some cases, this is possible through interventions spanning from the economic-social through drug treatments. Thus, why searching for biological markers, when some clinical and socio-economic indicators do already provide sufficiently accurate predictions? Indeed, the search of frailty biomarkers and of their biological clocks helps to build up a mechanistic frame that may orientate the design of interventions and the time window of their efficacy. Among the candidate biomarkers identified, several studies converge to indicate epigenetic clocks as a promising sensitive biomarker of the aging process. Moreover, it will help to establish the relationship between personal aging and health trajectories and to individuate the check points beyond which biological changes are irreversible.
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Affiliation(s)
- Stefano Govoni
- Department of Drug Sciences (Pharmacology Section), University of Pavia, Pavia, Italy
- CEFAT (Center of Pharmaceuticals Economics and Medical Technologies Evaluation), University of Pavia, Pavia, Italy
| | - Francesca Fagiani
- Department of Drug Sciences (Pharmacology Section), University of Pavia, Pavia, Italy
| | - Cristina Lanni
- Department of Drug Sciences (Pharmacology Section), University of Pavia, Pavia, Italy
| | - Nicola Allegri
- CEFAT (Center of Pharmaceuticals Economics and Medical Technologies Evaluation), University of Pavia, Pavia, Italy
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